CN2218041Y

CN2218041Y - Rolling pipe mouth expander

Info

Publication number: CN2218041Y
Application number: CN 93226655
Authority: CN
Inventors: 侯君勤
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-01
Filing date: 1993-12-01
Publication date: 1996-01-24
Anticipated expiration: 2003-12-01

Abstract

The utility model discloses a rolling pipe mouth expander for the mouth expanding processing of thin-wall metal pipes. A pressurizing shaft which is arranged on the center shaft of a gate housing can be driven by a rotating handle to move vertically, and a rolling taper body is obliquely mounted below the pressurizing shaft; a T-shaped quadrate slot is arranged at the lower part of the housing, a metal pipe which requires to be expanded can be clamped in a square iron circular hold of a clamping tube, a square iron is inlaid and inserted into the T-shaped slot, and the metal pipe can be fixed by clamping the handle. The pipe mouth expander has the advantages of convenient use, handiness, good and stable expanding quality.

Description

The rolling-type tube expander

The utility model relates to a kind of rolling-type tube expander that thin metallic tubd carries out enlarging processing that is used for.

In the prior art, the direct press type tube expander is generally adopted in the enlarging of thin metallic tubd.Because the enlarging garden conical surface of this tube expander is that sliding friction contact with the conical surface of the mouth of pipe, so it is big to add the man-hour resistance, institute's reamer face is of poor quality, and the mouth of pipe is easy to crack, the sealing when influencing use.

The purpose of this utility model is to provide a kind of energy hand-held operation, use light, the measured rolling-type tube expander of enlarging matter.

In order to achieve the above object, the utility model adopts following technical proposals: (referring to Fig. 1) gate-type housing is equipped with pressuring shaft as frame on its central axis, and frame is stretched out on pressuring shaft top, rotary handle is housed, drives pressuring shaft in the frame inward turning then move up and down.A roll extrusion cone is arranged below the pressuring shaft, and it and pressuring shaft axis tilt to install, and become the α angle to intersect.The rectangular groove of T shape is arranged at the bottom of frame, the thin metallic tubd of enlarging to be clamped in the hole, garden of clamp square iron, and the intercalation of clamp square iron is in T-slot.One side of frame lower is equipped with clamping lever, and the locating cone hole is arranged in clamp square iron and clamping lever axis corresponding position, make enlarging metal tubular axis can with the pressurization axis alignment.In the rotation of the top of frame feed screw is housed, the spring of exerting pressure is housed at the screw rod endoporus.In the hole of screw rod upper end, be inserted with clutch and draw pin, draw the top of pin to be contained in the blind hole of rotary handle correspondence, reseting pressuring spring is housed in the blind hole.Positive stop block is equipped with on top in pressuring shaft, and an end of plate washer is embedded in clutch and draws in the groove on pin top.

During use, the enlarging metal tube is aligned and is clamped under the pressuring shaft, and tube mouth flushes with clamp square iron plane.Rotary handle clockwise rotates, and draws pin by the clutch that is contained in the handle blind hole, drives feed screw and clockwise rotates, and to pressing down, the spring of exerting pressure promotes the pressuring shaft and the approaching enlarging mouth of pipe for the treatment of of roll extrusion cone downwards with the spring of exerting pressure in the screw rod endoporus.Setting (by the intensity decision of the spring of exerting pressure) under the plus-pressure, the roll extrusion cone is along mouth of pipe roll extrusion, and it is tubaeform that the mouth of pipe is formed, till mouth of pipe diffusion extremely is close to hole, the clamp square iron garden conical surface.Enlarging conical surface angle equals roll extrusion cone cone angle and adds upper cone and pressuring shaft inclination angle a, and mouth of pipe outer wall cone angle is determined by hole, clamp square iron garden conical surface angle.The inside and outside wall angle of the enlarging conical surface equates.

When enlarging is finished as continuing the up time turning handle, owing to can not continue to move down under the pressuring shaft, the spring of then compression being exerted pressure, pressuring shaft and feed screw are produced to relatively move, distance is drawn back between feed screw and the rotary handle, finally make clutch draw the upper end on pin end face inclined-plane to deviate from the hole of feed screw upper end, make rotary handle only drive pressuring shaft idle running and no longer drive feed screw and rotate.

When rotary handle rotates counterclockwise, clutch draws pin under the active force of back-moving spring, the lower end on its end face inclined-plane is slipped in the hole of feed screw upper end, handle will drive feed screw and rotate counterclockwise, pressuring shaft will on move, make the roll extrusion cone break away from the enlarging mouth of pipe, as long as at this moment loosen clamping lever, extract the clamp square iron out, even if the mutual preface of enlarging is finished.The positive stop block that be equipped with on pressuring shaft top is to prevent that clutch from drawing pin to deviate from the hole, because plate washer is narrow, draws the groove of pin wide, makes and draws pin can move up and down in the blind hole of rotary handle.

In order to reduce the pressuring shaft rotational resistance, needle bearing (2) radially is housed in pressuring shaft; A plane respectively is housed down in the axial direction promotes bearing (10) and (16); In the roll extrusion cone axis a pair of needle bearing (11) is housed radially.

The utility model compared with prior art, advantage such as advantage is obvious, and it has easy to use, and is light and handy, and enlarging face angle is accurate, and fineness is good.

The drawing explanation of accompanying drawing:

Fig. 1 is the utility model overall structure schematic diagram.

Embodiment of the present utility model is: referring to Fig. 1, (1) is a pair of clamp square iron, and (2) are the radial needle bearings of pressuring shaft; (3) be the gate-type housing; (4) be the spring of exerting pressure; (5) be feed screw; (6) be rotary handle; (7) be positive stop block; (8) be back-moving spring; (9) be that pin is drawn in clutch, (10) and (16) are plain thrust bearings; (11) be the radial needle bearing of a pair of roll extrusion cone axis; (12) be clamping lever; (13) be pressuring shaft; (14) be to treat the enlarging metal tube; (15) be the roll extrusion cone; (17) be locating cone hole on the clamp square iron.The α angle is generally 5 °～15 °.This mouth expander can carry out enlarging processing to seamless thin wall steel, red copper and the aluminum pipe in φ 3～φ 19 scopes.

Claims

1, a kind of rolling-type tube expander, include a gate-type housing (3) that forms frame, pressuring shaft (13) is housed on the central axis of housing, above pressuring shaft, stretch out frame, rotary handle (6) is housed, roll extrusion cone (15) is arranged below pressuring shaft, intercalation has a pair of clamp square iron (1) in the rectangular groove of the T of lower housing portion shape, enlarging metal tube (14) is clamped in the hole, clamp square iron garden, one side is equipped with clamping lever (12) in the bottom of casing, it is characterized in that the roll extrusion cone tilts to install, and becomes the α angle to intersect with the pressuring shaft axis.

2, tube expander according to claim 1 is characterized in that on the top of gate-type housing feed screw (5) being housed, and at the screw rod endoporus spring of exerting pressure (4) is housed; In the hole of screw rod upper end, be inserted with clutch and draw pin (9); Clutch draws the top of pin to be contained in the blind hole of rotary handle correspondence, and reseting pressuring spring (8) is housed in the blind hole; Positive stop block (7) is housed on the top of pressuring shaft, and an end of plate washer is embedded in clutch and draws in the groove on pin top

3, tube expander according to claim 1 is characterized in that at clamp square iron and clamping lever axis corresponding position locating cone hole (17) being arranged.