CN220426437U - Clamping head of pipe bending machine - Google Patents

Abstract

The utility model discloses a chuck of a pipe bender, which comprises an outer sleeve, wherein the outer sleeve is connected onto an inner sleeve in a sliding manner, the inner sleeve is connected onto a pipe bender body, a plurality of mounting grooves are uniformly formed in the inner sleeve, corresponding clamping claws are rotationally connected in each mounting groove, a spring piece is connected to the inner bottom surface of each mounting groove, the other end of each spring piece is connected with the corresponding clamping claw, and a driving assembly for driving the outer sleeve to move back and forth is arranged on the pipe bender body. The utility model solves the problem that the collet of the existing pipe bender is made of spring steel, the size and the dimension are always fixed, and the collet of the pipe bender is lack of applicability because a single collet cannot be adapted to pipes with different dimensions.

Description

Clamping head of pipe bending machine

Technical Field

The utility model relates to a chuck of a pipe bender.

Background

The pipe bender is mainly based on the vector pipe bending principle, utilizes microcomputer control to finish any spatial stereo pipe shape required by users, and is an important processing device for modern bending and shaping. Pipe bending machines can be broadly classified into numerical control pipe bending machines, hydraulic pipe bending machines, and the like. The pipe bending machine is used for: the hydraulic pipe bender is mainly used for electric power construction, highway and railway construction, pipeline laying and repairing in the aspects of boilers, bridges, ships, furniture, decoration and the like, and has the advantages of multiple functions, reasonable structure, simplicity in operation, convenience in movement, rapidness in installation and the like.

The existing pipe clamping assembly of the pipe bending machine consists of a push sleeve and an elastic chuck, and the push sleeve is controlled to move back and forth through a driving mechanism so that the elastic chuck is loosened and clamped. When the pushing sleeve is controlled to move forwards by the driving mechanism, the pushing sleeve can push the four parts of the elastic chuck to shrink inwards, so that the pipe fitting in the elastic chuck is clamped. Because the collet is made of spring steel, the size and dimensions are often fixed, and a single collet cannot fit different sized tubing, resulting in a lack of applicability for the bender collet.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the clamping head of the pipe bender, which adopts the structures of the spring and the clamping jaw to adapt to pipes with different sizes, so that the applicability of the clamping head of the pipe bender is improved.

The technical scheme for achieving the purpose is as follows: the utility model provides a bending machine chuck, includes the outer sleeve, outer sleeve sliding connection is on the inner sleeve, the inner sleeve is connected on the bending machine body, evenly offered a plurality of mounting grooves on the inner sleeve, each the mounting groove internal rotation is connected with corresponding jack catch, the interior bottom surface of mounting groove is connected with the spring, the other end of spring is connected with the correspondence the jack catch, each the jack catch with seted up corresponding cylinder hole on the inner sleeve, each install the fixed axle in the corresponding cylinder hole, through four the fixed axle each the one end rotation of jack catch is connected the inner sleeve, be equipped with on the bending machine body and be used for driving the drive assembly of outer sleeve round trip movement.

Preferably, the driving assembly comprises a cylinder, a fixing frame, a shifting fork, a movable frame and fixing rods, wherein the fixing frame is arranged on the pipe bender body, the cylinder is arranged on the fixing frame, the telescopic end of the cylinder is connected with the shifting fork, the other end of the shifting fork is rotationally connected with the movable frame, the other end of the movable frame is rotationally connected with the pipe bender body, two fixing rods are arranged on the inner wall of the movable frame in a mirror image mode, a positioning groove is formed in the outer wall of the outer sleeve, and the two fixing rods are located in the positioning groove.

Preferably, the spring member is a conical spring.

Preferably, the spring member is a cylindrical spring.

Preferably, a certain inclination angle exists on the outer surface of the clamping jaw.

Preferably, the spring member is made of an alloy spring steel material.

The beneficial effects of the utility model are as follows: a plurality of mounting grooves are uniformly formed in the inner sleeve, corresponding clamping claws are connected in the mounting grooves in a rotating mode, a spring piece is connected to the inner bottom surface of each mounting groove, corresponding clamping claws are connected to the other end of each spring piece, each clamping claw can rotate along the central shaft direction corresponding to the fixed shaft, meanwhile under the combined action of the spring piece and the outer sleeve, the four clamping claws can expand and contract simultaneously, the moving position of the outer sleeve is changed, pipes of different sizes can be clamped, and the applicability of the clamping head of the pipe bender is improved.

Drawings

FIG. 1 is a perspective view of the present utility model;

fig. 2 is a schematic view of the general location of the present utility model:

FIG. 3 is an exploded view of the present utility model;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

figure 5 is a schematic view of the structure of the interior of the inner sleeve of the present utility model.

In the figure: 1. an outer sleeve; 2. an inner sleeve; 3. a cylinder; 4. a fixing frame; 5. a shifting fork; 6. a movable frame; 7. a fixed rod; 8. a positioning groove; 9. a pipe bender body; 10. a mounting groove; 11. a claw; 13. a spring member; 14. and a fixing rod.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.

The utility model will be further described with reference to the accompanying drawings.

Example 1

As shown in fig. 1-5, a clamping head of a pipe bender comprises an outer sleeve 1, an inner sleeve 2, four clamping jaws 11, four fixed shafts 14, four spring members 13 and a driving assembly.

Specifically, outer sleeve 1 sliding connection is on inner sleeve 2, inner sleeve 2 connects on bending machine body 9, evenly seted up a plurality of mounting grooves 10 on the inner sleeve 2, each mounting groove 10 internal rotation is connected with corresponding jack catch 11, the interior bottom surface of mounting groove 10 is connected with spring part 13, the other end of spring part 13 is connected with corresponding jack catch 11, corresponding cylinder hole has been seted up on each jack catch 11 and the inner sleeve 2, install fixed axle 14 in each corresponding cylinder hole, one end of each jack catch 11 through four fixed axles 14 rotates and connects inner sleeve 2, each jack catch 11 can rotate along the center pin direction that corresponds fixed axle 14, be equipped with the drive assembly who is used for driving outer sleeve 1 round trip movement on the bending machine body 9, change the position that outer sleeve 1 removed can press from both sides tight not unidimensional tubular product, improve the suitability of bending machine chuck.

Specifically, the drive assembly includes cylinder 3, mount 4, shift fork 5, movable rack 6 and dead lever 7, be equipped with mount 4 on the bending machine body 9, install cylinder 3 on the mount 4, the flexible end of cylinder 3 is connected with shift fork 5, the other end rotation of shift fork 5 is connected with movable rack 6, the other end rotation of movable rack 6 is connected on bending machine body 9, mirror image is equipped with two dead levers 7 on the inner wall of movable rack 6, constant head tank 8 has been seted up to the outer wall of outer sleeve 1, two dead levers 7 are located constant head tank 8, the flexible end of cylinder 3 drives shift fork 5 and makes repetitive motion, shift fork 5 drives movable rack 6 and makes rotary motion around it and bending machine body 9 fixed point, two dead levers 7 drive outer sleeve 1 and do repetitive rectilinear motion along the direction of inner sleeve 2 this moment.

Specifically, the spring member 13 is a conical spring, and the conical spring has the characteristics of long service life, strong stability and capability of better bearing load force, and can greatly prolong the service life of the device; a certain inclination angle exists on the outer surface of each claw 11, so that the outer sleeve 1 can push the four claws 11 to tighten or expand conveniently; the spring member 13 is made of an alloy spring steel material, which has a high yield point, an elastic limit, and fatigue resistance, ensures that the spring has sufficient elastic deformation capacity and can bear a large load.

Example 2

The spring piece 13 can also adopt a cylindrical spring, and the cylindrical spring has simple structure, convenient manufacture and wide market application range, and can save more cost.

Working principle:

when the pipes with different pipe diameters need to be clamped, firstly, the air cylinder 3 is opened, the air cylinder 3 drives the shifting fork 5 to approach to the air cylinder, the shifting fork 5 drives the movable frame 6 and the two fixing rods 7 to rotate, the two fixing rods 7 give rightward force to the positioning groove 8, at the moment, the outer sleeve 1 moves rightward along the direction of the inner sleeve 2, at the moment, the four clamping claws 11 do not have the pressure of the outer sleeve 1, the four clamping claws 11 are opened under the action of the elastic force of the corresponding spring piece 13, the pipe is conveniently inserted into the inner sleeve 2, and then the pipe can be clamped by repeating the steps reversely.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (6)

1. The utility model provides a bending machine chuck, its characterized in that, including outer sleeve (1), outer sleeve (1) sliding connection is on inner sleeve (2), inner sleeve (2) are connected on bending machine body (9), evenly offered a plurality of mounting grooves (10) on inner sleeve (2), each mounting groove (10) internal rotation is connected with corresponding jack catch (11), the interior bottom surface of mounting groove (10) is connected with spring (13), the other end of spring (13) is connected with corresponding jack catch (11), each jack catch (11) with offer corresponding cylinder hole on inner sleeve (2), each corresponding cylinder downthehole fixed axle (14) of installing, through four fixed axle (14) each jack catch (11) one end rotation is connected inner sleeve (2), be equipped with on bending machine body (9) and be used for driving outer sleeve (1) round trip movement's drive assembly.

2. The pipe bender chuck according to claim 1, wherein the driving assembly comprises a cylinder (3), a fixing frame (4), a shifting fork (5), a movable frame (6) and a fixing rod (7), wherein the fixing frame (4) is arranged on the pipe bender body (9), the cylinder (3) is installed on the fixing frame (4), the telescopic end of the cylinder (3) is connected with the shifting fork (5), the other end of the shifting fork (5) is rotationally connected with the movable frame (6), the other end of the movable frame (6) is rotationally connected with the pipe bender body (9), two fixing rods (7) are arranged on the inner wall of the movable frame (6) in a mirror image manner, a positioning groove (8) is formed in the outer wall of the outer sleeve (1), and the two fixing rods (7) are located in the positioning groove (8).

3. A clamping head of a pipe bender according to claim 1, characterized in that the spring member (13) is a conical spring.

4. A clamping head of a pipe bender according to claim 1, characterized in that the spring member (13) is a cylindrical spring.

5. A clamping head of a pipe bender according to claim 1, characterized in that the outer surface of the jaws (11) is inclined at an angle.

6. A bender clamp according to claim 1, characterized in that the spring element (13) is made of an alloy spring steel material.