CN210305215U

CN210305215U - Small pipe bender for pipe machining

Info

Publication number: CN210305215U
Application number: CN201921223639.0U
Authority: CN
Inventors: 杨龙; 姜在彬; 周云顺; 范生斌
Original assignee: SHANDONG CHONGSHENG METALLURGICAL OXYGEN LANCE CO Ltd
Current assignee: SHANDONG CHONGSHENG METALLURGICAL OXYGEN LANCE CO Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-04-14
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses a small pipe bender for processing pipes, which comprises three mould guide wheels, namely a fixed mould guide wheel, a first movable mould guide wheel and a second movable mould guide wheel; the first movable die guide wheel and the second movable die guide wheel respectively rotate by taking the central line of the fixed die guide wheel as a rotating central axis, and the distance between the circle centers of the first movable die guide wheel and the fixed die guide wheel is greater than that between the circle centers of the second movable die guide wheel and the fixed die guide wheel; the utility model provides a small pipe bender for pipe processing, which can ensure the stable transition of the bent pipe in the bending process, avoid the instability deformation and the fold; the bending moment of the bent pipe is prevented from being too large, so that the bent pipe is prevented from being greatly collapsed and wrinkled, and the surface of the bent pipe is prevented from having serious drag mark defects.

Description

Small pipe bender for pipe machining

Technical Field

The utility model relates to a small-size bending machine for tubular product processing belongs to tubular product processing technology field.

Background

The small pipe bender has the advantages of low manufacturing cost, small bending arc deformation, no need of heating, convenient use, portability and the like, occupies the leading product position in the domestic pipe bender market, and is mainly used for pipeline laying and building in the aspects of electric power construction, highway construction, boilers, bridges, ships, furniture, decoration and the like.

Authorizing bulletin number CN207756657U, authorizing bulletin date is 2018 chinese utility model of 08 months 24 days, discloses a manual pipe bender for building engineering, and it includes the base, install the tight screw rod in top through screw thread drive fit on the screw rod mount pad of base, the one end of the tight screw rod in top is run through and is installed the turning handle, and the tight piece in top is installed to the other end, the tight piece in top cooperatees with the slide rail on the base simultaneously, fixed mounting has the arc on the base, the center pin of arc cooperatees with the arc hook plate of rotating the fork front end, rotate and install arc shaping piece with adjustable between the fork, the end of rotating the fork is long rectangular pole, the handle is installed to the terminal adjustable of long rectangular pole.

The manual pipe bender disclosed in the patent has the advantages of simple structure, convenience in carrying, capability of conveniently and quickly bending the steel pipe, small volume, capability of being quickly disassembled and assembled and high assembly efficiency; the device has the defects that the bend pipe is easy to be deformed unstably in the bending process, the stable transition of the bending process cannot be guaranteed, and the bend pipe is easy to be wrinkled, and in addition, the bending moment of the bend pipe in the bending process is easy to be overlarge, so that the bend pipe is greatly shrunken and wrinkled, the surface of the bend pipe is seriously dragged to be scratched, and an anticorrosive coating on the surface of a pipe fitting is damaged; the prior art obviously has inconvenience and defects in practical use, so that improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a small pipe bender for pipe processing is provided, which can ensure the stable transition of the bent pipe in the bending process, avoid the instability and deformation and avoid the fold; the bending moment that avoids the return bend to receive is too big and great flat sinking, corrugate appear, prevents that the return bend surface from appearing serious drag mark.

For solving the technical problem, the utility model discloses a following technical scheme:

a small pipe bender for processing pipes comprises three die guide wheels, namely a fixed die guide wheel, a first movable die guide wheel and a second movable die guide wheel; the first movable die guide wheel and the second movable die guide wheel respectively rotate by taking the central line of the fixed die guide wheel as a rotating central axis, and the distance between the circle centers of the first movable die guide wheel and the fixed die guide wheel is greater than that between the circle centers of the second movable die guide wheel and the fixed die guide wheel; the first movable die guide wheel and the second movable die guide wheel are respectively arranged on a rotating shaft, and the rotating shaft is vertically arranged above one end part of the dovetail plate; the vertical section of the dovetail plate is of an isosceles trapezoid structure, the dovetail plate is slidably mounted in a dovetail groove, the dovetail groove is formed in the surface of the triangular rotating block, and two dovetail grooves are arranged in parallel; the inner side of one end of the dovetail plate is provided with a T-shaped groove, and the T-shaped groove is used for mounting a cylindrical protrusion at one end of the adjusting screw rod; and the main body of the adjusting screw rod is in threaded connection with the stop block.

Furthermore, a vertically arranged cylinder body is fixed on one triangular vertex of the triangular rotating block, a bearing is embedded in the cylinder body, and the bearing is sleeved on the main body of the supporting shaft.

Furthermore, one end face of the triangular rotating block is fixedly connected with one end part of the main rotating handle, and an auxiliary rotating handle is fixed on the main body of the main rotating handle.

Further, the fixed die guide wheel is sleeved on the upper part of the main body of the supporting shaft; the bottom of the supporting shaft is fixed on the upper surface of the base through welding.

Further, the first movable die guide wheel and the second movable die guide wheel have the same structure.

Further, the diameter of the cylindrical protrusion is larger than the diameter of the adjusting screw.

Furthermore, the two stop blocks are respectively and fixedly arranged at one end part of the triangular rotating block.

The utility model adopts the above technical scheme after, compare with prior art, have following advantage:

the utility model provides a small pipe bender, through the cooperation in three mould guide pulleys that are triangular distribution, can ensure that the main part of return bend is the auto-lock all the time in the recess of mould guide pulley, can ensure that the return bend carries out steady transition in the recess of mould guide pulley, the unstability deformation can not appear, also the fold can not appear; the device is used for forming the bent pipe through step-by-step cold bending, pre-deforming is carried out in the first step, and forming is carried out in the second step, so that the problem that the surface of the bent pipe is greatly shrunken and wrinkled due to overlarge bending moment of the bent pipe in the single forming process can be avoided, and the problem that the surface of the bent pipe is seriously dragged due to overlarge moment of the bent pipe can be prevented; the utility model has simple structure and can be widely applied to the technical field of pipe processing.

The present invention will be described in detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a top view of the structure of the present invention;

FIG. 2 is a front view of the structure of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 1;

in the figure, the position of the upper end of the main shaft,

1-fixed die guide wheel, 2-first movable die guide wheel, 3-second movable die guide wheel, 4-supporting shaft, 5-base, 6-rotating shaft, 7-dovetail plate, 8-triangular rotating block, 9-dovetail groove, 10-barrel, 11-T-shaped groove, 12-cylindrical protrusion, 13-adjusting screw rod, 14-adjusting head, 15-stop block, 16-main rotating handle, 17-auxiliary rotating handle and 18-clamping block.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.

Embodiment 1A small pipe bender for pipe processing

As shown in fig. 1, 2 and 3, the present invention provides a small pipe bender for pipe processing, which comprises three mold guide wheels, namely a fixed mold guide wheel 1, a first movable mold guide wheel 2 and a second movable mold guide wheel 3; the first movable die guide wheel 2 and the second movable die guide wheel 3 respectively rotate by taking the central line of the fixed die guide wheel 1 as a rotating central axis, and the distance between the circle centers of the first movable die guide wheel 2 and the fixed die guide wheel 1 is greater than the distance between the circle centers of the second movable die guide wheel 3 and the fixed die guide wheel 1; the first movable mould guide wheel 2 and the second movable mould guide wheel 3 are used for cold-bending the pipe step by step in the rotating process.

The fixed die guide wheel 1 is sleeved on the upper part of the main body of the supporting shaft 4; the bottom end of the supporting shaft 4 is fixed on the upper surface of the base 5 through welding; the first movable die guide wheel 2 and the second movable die guide wheel 3 are identical in structure, the first movable die guide wheel 2 and the second movable die guide wheel 3 are respectively installed on a rotating shaft 6, the rotating shaft 6 is vertically installed above one end part of a dovetail plate 7, and the first movable die guide wheel 2 and the second movable die guide wheel 3 can respectively slide under the driving of the dovetail plate 7; the vertical section of the dovetail plate 7 is of an isosceles trapezoid structure, the dovetail plate 7 is slidably mounted in a dovetail groove 9, the dovetail groove 9 is formed in the surface of the triangular rotating block 8, and two dovetail grooves 9 are arranged in parallel; a T-shaped groove 11 is formed in the inner side of one end of the dovetail plate 7, the T-shaped groove 11 is used for mounting a cylindrical protrusion 12 at one end of an adjusting screw 13, and the diameter of the cylindrical protrusion 12 is larger than that of the adjusting screw 13; the main body of the adjusting screw 13 is in threaded connection with the stop block 15, an adjusting head 14 is arranged at one end of the adjusting screw 13, and the adjusting screw 13 is used for driving the dovetail plate 7 to slide; two stop blocks 15 are arranged and are respectively fixedly arranged at one end part of the triangular rotating block 8; one end face of the triangular rotating block 8 is fixedly connected with one end part of the main rotating handle 16, and one end part of the main rotating handle 16 is positioned in a gap between the two stop blocks 15; an auxiliary rotating handle 17 is fixed on the main body of the main rotating handle 16, and the main rotating handle 16 and the auxiliary rotating handle 17 are matched to facilitate simultaneous force exertion of two hands.

A vertically arranged cylinder 10 is fixed on one triangular vertex of the triangular rotating block 8, a bearing is embedded in the cylinder 10, and the bearing is sleeved on the main body of the supporting shaft 4; the triangular turning block 8 rotates by taking the support shaft 4 as a rotation central axis; the upper surface of the base 5 is also provided with a clamping block 18, and the clamping block 18 is used for fixing one end part of the pre-cold-bending pipe.

The utility model discloses a theory of operation:

before the pipe is subjected to cold bending work, a fixed die guide wheel 1, a first movable die guide wheel 2 and a second movable die guide wheel 3 which are suitable for installation are selected; then the distance between the circle centers of the first movable die guide wheel 2 and the fixed die guide wheel 1 and the distance between the circle centers of the second movable die guide wheel 3 and the fixed die guide wheel 1 are respectively adjusted, so that the distance between the circle centers of the first movable die guide wheel 2 and the fixed die guide wheel 1 is larger than the distance between the circle centers of the second movable die guide wheel 3 and the fixed die guide wheel 1, the adjustment process is extremely simple, only the adjusting head 14 needs to be rotated, the adjusting head 14 drives the dovetail plate 7 to slide through the adjusting screw 13, and the sliding of the dovetail plate 7 can adjust the distance between the circle centers of the fixed die guide wheel 1 and the first movable die guide wheel 2 or the second movable die guide wheel 3; the end part of a pipe to be cold-bent is fixed on the clamping block 18, the main rotating handle 16 and the auxiliary rotating handle 17 are tightly held by two hands to exert force simultaneously, the first movable mould guide wheel 2 firstly performs preliminary cold bending on the pipe by a certain radian, and then the radian of the pipe is shaped by the second movable mould guide wheel 3.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims

1. A small-size bending machine for tubular product processing which characterized in that: comprises three die guide wheels, namely a fixed die guide wheel (1), a first movable die guide wheel (2) and a second movable die guide wheel (3); the first movable die guide wheel (2) and the second movable die guide wheel (3) respectively rotate by taking the central line of the fixed die guide wheel (1) as a rotating central axis, and the distance between the circle centers of the first movable die guide wheel (2) and the fixed die guide wheel (1) is greater than the distance between the circle centers of the second movable die guide wheel (3) and the fixed die guide wheel (1); the first movable die guide wheel (2) and the second movable die guide wheel (3) are respectively arranged on a rotating shaft (6), and the rotating shaft (6) is vertically arranged above one end part of the dovetail plate (7); the vertical section of the dovetail plate (7) is of an isosceles trapezoid structure, the dovetail plate (7) is slidably mounted in a dovetail groove (9), the dovetail groove (9) is formed in the surface of the triangular rotating block (8), and two dovetail grooves (9) are arranged in parallel; a T-shaped groove (11) is formed in the inner side of one end of the dovetail plate (7), and the T-shaped groove (11) is used for mounting a cylindrical protrusion (12) at one end of an adjusting screw rod (13); the main body of the adjusting screw rod (13) is in threaded connection with the stop block (15).

2. The bending machine of claim 1, wherein: a vertically arranged cylinder body (10) is fixed on one triangular vertex of the triangular rotating block (8), a bearing is embedded in the cylinder body (10), and the bearing is sleeved on the main body of the supporting shaft (4).

3. The bending machine of claim 1, wherein: one end face of the triangular rotating block (8) is fixedly connected with one end part of the main rotating handle (16), and an auxiliary rotating handle (17) is fixed on the main body of the main rotating handle (16).

4. The bending machine of claim 1, wherein: the fixed die guide wheel (1) is sleeved on the upper part of the main body of the supporting shaft (4); the bottom end of the supporting shaft (4) is fixed on the upper surface of the base (5) through welding.

5. The bending machine of claim 1, wherein: the first movable mould guide wheel (2) and the second movable mould guide wheel (3) are identical in structure.

6. The bending machine of claim 1, wherein: the diameter of the cylindrical protrusion (12) is larger than that of the adjusting screw rod (13).

7. The bending machine of claim 1, wherein: the two stop blocks (15) are respectively and fixedly arranged at one end part of the triangular rotating block (8).