CN2300462Y

CN2300462Y - Portable manual bending machine

Info

Publication number: CN2300462Y
Application number: CN 97217479
Authority: CN
Inventors: 陈传建
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-05-13
Filing date: 1997-05-13
Publication date: 1998-12-16
Anticipated expiration: 2007-05-13

Abstract

The utility model discloses a portable manual bending machine, which can be bent to form round tubes and square tubes with general diameters. The utility model makes use of the principle of a ratchet mechanism, and the ratchet wheel is provided with a projecting part. The projecting part is provided with a mechanism for clamping work pieces, and the upper end of the ratchet wheel is provided with a bending wheel. The side end of the ratchet wheel is provided with a couple of small movable bending wheels corresponding and matched with the bending wheels. After finished work piece is clamped, the small bending wheels can be adjusted to near to the work piece. The ratchet mechanism can be started to cause the work piece to be bent along with the rotation of the ratchet wheel for reaching the finished size requirement.

Description

The portable manual bending machine

The utility model relates to hand-operated tools, and is a kind of specifically portable, the bending machinery that the labour-saving is manual.

, mainly realize in the solid pipe of Φ 10～O40 and diameter bending machining for diameter by two kinds of methods of the craft of machinery at the hollow circular-tube of Φ 15～O60.The method of machinery is mainly finished by driven by motor machinery, and is very difficult for what then show away from the local of plant equipment or few in batches bending machining.And make method processing by hand often all very original, even adopt methods such as heating, back-up sand, could implement bending and difficult quality guarantee.

In order to address this problem, Chinese patent 93238824.8 and 94218492.0 has proposed the special-purpose machinery of manual bend pipe, the former " manual tube bender " more complicated, latter's " manual tube bender " is though simple in structure, but relatively require great effort when crooked, even need use both hands and feet, and caliber easy deformation, difficult quality guarantee, size are not easy unified.

The purpose of this utility model be to provide a kind of portable diameter from Φ 10～Φ 40 solid pipes and Φ 15～Φ 60 hollow circular-tube or the bending machining machinery of square tube, its angle of bend is from 0 °～180 °.

The purpose of this utility model is achieved in that by a base plate, fixes a main shaft on the base plate, and a circumference has ratchet and has projection in 270 ° of scopes ratchet is installed on the main shaft, and upper end, the center of ratchet is equipped with the bend pipe wheel on the main shaft; The projection upper end of ratchet is fixed with semicircle chuck and feed screw nut, is installed with screw mandrel in the middle of the feed screw nut, and the screw mandrel head is being fixed movable semicircle chuck; Be fixed with a upper plate on the other end of base plate, the upper plate upper end is the boss that a centre has nut, the center of boss top nut is installed with a screw rod, and the front end of screw rod is being fixed a U-steel, and a pair of little bend pipe wheel side by side is installed in the middle of the U-steel; The front end of upper plate is fixed with a horizontal cylindrical sleeve on the base plate, and the center of cylindrical sleeve is equipped with the round bar of angle square shape, and an end of round bar is being fixed long handle; Laterally a vertical cylindrical sleeve is being fixed in the cylindrical sleeve front, vertically inserts an anti-bar that sticks up in the cylinder trepanning; The head that the centre of ratchet and upper plate has dead slot in the middle of being equipped with on the base plate rises up into ratchet in the middle of the ratchet in the ratchet and head and rises up into that retaining ratchet in the middle of the ratchet in the ratchet constitutes.To need crooked pipe to insert in the semi arch of the semicircle chuck of fixing the ratchet projection upper end on the base plate during work, and movable semicircle chuck is pushed to workpiece and made its clamping by the effect of screw mandrel, the a pair of little bend pipe wheel of then other end of base plate being installed side by side is close to itself and workpiece by the effect of screw rod, after finishing above location and clamping work pieces task, the long handle of installing with lower swing base plate front end on hand, the head that has the round bar of angle square shape under the effect of long handle promptly is inserted in the center dead slot that is installed in the ratchet of ratchet and upper plate center on the base plate, the every swing of long handle once like this, the head of ratchet just extend in the ratchet on the ratchet once and promotes ratchet to the position that circumferencial direction moves a tooth, and the tooth position after moving has prevented its return effectively under the effect of retaining ratchet.Swing long handle so repeatedly till reaching the angle of bend requirement, promptly can realize the purpose of the processing that the utility model proposes.

The utility model is because on the principle of ratchet mechanism, with processed workpiece clamp in the middle of the semicircle chuck of special ratchet upper end, make it can be forced to force lentamente workpiece to rotate and produce flexural deformation, thereby can accomplish that promptly bending machining is carried out in the labour-saving effectively again along with the rotation of ratchet to circumferencial direction.The utility model has used a pair of little bend pipe wheel simultaneously, near the workpiece that is bent, make it can perk in BENDING PROCESS, and because the effects of two little bend pipes wheels, prevent to be bent the radial deformation of workpiece effectively, thereby guaranteed the quality of processing further.So the crooked purpose that the realization of the utility model mechanical energy is drafted.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the utility model structural upright view.A base plate (1) is arranged among the figure, fix a main shaft (13) on the base plate (1), a circumference has ratchet and has projection in 270 ° of scopes ratchet (11) is installed on the main shaft (13), and the upper end, center that main shaft (13) is gone up ratchet (11) is equipped with bend pipe wheel (12); Ratchet (11), projection upper end is fixed with semicircle chuck (14) and feed screw nut (17), feed screw nut (17) centre is installed with screw mandrel (16), the head of screw mandrel (16) is being fixed movable semicircle chuck (15); The other end of base plate (1) is fixed with a upper plate (10), upper plate (10) upper end is the boss (6) that a centre has nut, the center of boss (6) top nut is installed with a screw rod (7), the front end of screw rod (7) is being fixed a U-steel (8), and a pair of little bend pipe wheel (9) side by side is installed in the middle of the U-steel (8); The front end of base plate (1) upper plate (10) is fixed with a horizontal cylindrical sleeve (5), and the center of cylindrical sleeve (5) is equipped with the round bar (4) of angle square shape, and an end of round bar (4) is being fixed long handle (2); Laterally a vertical cylindrical sleeve (22) is being fixed in cylindrical sleeve (5) front, vertically inserts an anti-bar (23) that sticks up in cylindrical sleeve (22) hole; The head that has dead slot in the middle of the centre that base plate (1) is gone up ratchet (11) upper plate (10) is equipped with rises up into ratchet (19) in the middle of the ratchet in the ratchet (11) and head and rises up into retaining ratchet (3) formation in the middle of the ratchet in the ratchet (11).(20), (21) are springs among the figure, and (24) are the workpiece that is bent.

To need crooked workpiece to insert in the semi arch of the semicircle chuck of fixing ratchet (11) the projection upper end on the base plate (1) (14) during work, and movable semicircle chuck (15) is pushed to workpiece and made its clamping by screw mandrel (16) effect, then a pair of little bend pipe wheel (9) side by side that the other end of base plate (1) is installed is close to itself and workpiece by the effect of screw rod (7), after finishing above location and clamping work pieces task, the long handle of installing with lower swing base plate (1) front end on hand (2), under the drive of long handle (2), the head that has the round bar (4) of angle square shape promptly is inserted in the center dead slot of the ratchet (19) that is installed in last ratchet (11) of base plate (1) and upper plate (10) center, the every swing of long handle (2) once like this, the head of ratchet (19) just extend in the ratchet on the ratchet (11) once and promotes ratchet (11) to the position that circumferencial direction moves a tooth, and the tooth position after moving has prevented its return effectively under the effect of retaining ratchet (3).Swing long handle (2) so repeatedly till the requirement that reaches the workpiece angle of bend.

Claims

1, the portable manual bending machine of a kind of solid and hollow pipe of flexible diameter commonly used and square tube commonly used, it is characterized in that by a base plate (1), fix a main shaft (13) on the base plate (1), a ratchet (11) that has projection is installed on the main shaft (13), and the upper end, center that main shaft (13) is gone up ratchet (11) is equipped with bend pipe wheel (12); The projection upper end of ratchet (11) is fixed with semicircle chuck (14) and feed screw nut (17), is installed with screw mandrel (16) in the middle of the feed screw nut (17), and screw mandrel (16) head is being fixed movable semicircle chuck (15); Be fixed with a upper plate (10) on the other end of base plate (1), upper plate (10) upper end is the boss (6) that a centre has nut, the center of boss (6) top nut is installed with a screw rod (7), the front end of screw rod (7) is being fixed a U-steel (8), a pair of little bend pipe wheel (9) side by side is installed in the middle of the U-steel (8), base plate (1) is gone up the front end of upper plate (10) and is fixed a horizontal cylindrical sleeve (5), the center of cylindrical sleeve (5) is equipped with the round bar (4) of angle square shape, and an end of round bar (4) is being fixed long handle (2); Laterally a vertical cylindrical sleeve (22) is being fixed in cylindrical sleeve (5) front, vertically inserts an anti-bar (23) that sticks up in cylindrical sleeve (22) hole; In the middle of being equipped with, the centre that base plate (1) is gone up ratchet (11) and upper plate (10) has the ratchet (19) of dead slot and retaining ratchet (3) formation.

2, portable manual bending machine according to claim 1 is characterized in that ratchet (11) has ratchet in 270 ° of scopes of circumference.

3, portable manual bending machine according to claim 1 is characterized in that the head of ratchet (19) and retaining ratchet (3) rises up in the middle of the ratchet in the ratchet (11).