CN209969405U

CN209969405U - Chuck structure for pipe expander

Info

Publication number: CN209969405U
Application number: CN201920403105.XU
Authority: CN
Inventors: 蒋友荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-01-21
Anticipated expiration: 2029-03-27

Abstract

The utility model discloses an expander provides a simple structure, clamping convenient and fast, safe and reliable has guaranteed expander processingquality's chuck structure for expander, and the clamping that exists has been solved among the prior art wastes time and energy, and the operation is inconvenient, and positioning accuracy is poor, can't guarantee technical problem such as expander processingquality, and it includes the expander body and locates the expander head this internal expander head, is equipped with the pipe expanding chamber on the expander body that corresponds with the pipe expanding chamber be equipped with chuck inlet hole on the lateral wall of pipe expanding chamber, the one end of chuck body is being inserted in chuck inlet hole, but has left chuck and the right chuck of holding the pipe fitting of waiting to process on the chuck body in the pipe expanding chamber, be equipped with the application of force handle that can make left chuck and right chuck outwards expand on the chuck body outside chuck inlet hole.

Description

Chuck structure for pipe expander

Technical Field

The utility model relates to an expander especially relates to a simple structure, and clamping convenient and fast has guaranteed expander processingquality's chuck structure for expander.

Background

The pipe expander is a pipe expanding tool which is used for expanding the inner diameter and the outer diameter of a pipe when various containers are manufactured and maintained, so that the pipe is tightly connected with a pipe plate contact part, air leakage is avoided, and certain pressure can be borne. The existing tube expander generally comprises a manual tube expander and an electric tube expander, wherein the two tube expanders generally adopt a long-strip-shaped tube expanding strip to clamp a copper tube and then put into the tube expander to carry out tube expanding processing. The round clamping openings of a plurality of specifications are usually arranged on the pipe expanding strips to clamp copper pipes of different specifications, so that the pipe expanding strips are heavy in weight and inconvenient to operate and use, and one hand needs to be vacated during clamping to compress the pipe expanding strips, so that the copper pipes placed in place are easy to axially move relative to the pipe expanding strips, the size of the pipe expanding bell mouth is inaccurate or the precision is insufficient, and the quality of pipe expanding processing cannot be guaranteed.

Disclosure of Invention

The utility model mainly provides a simple structure, clamping convenient and fast, safe and reliable has guaranteed the chuck structure for the expander of expander processingquality, has solved the clamping that exists among the prior art and has wasted time and energy, and the operation is used inconveniently, and positioning accuracy is poor, can't guarantee the technical problem of expander processingquality etc..

The above technical problem of the present invention can be solved by the following technical solutions: a chuck structure for a pipe expander comprises a pipe expander body and a pipe expander head arranged in the pipe expander body, wherein a pipe expander cavity is arranged on the pipe expander body corresponding to the pipe expander head, a chuck leading-in hole is formed in the side wall of the pipe expander cavity, one end of a chuck body is inserted into the chuck leading-in hole, a left chuck and a right chuck which can clamp a pipe fitting to be processed are arranged on the chuck body in the pipe expander cavity, and a force application handle which can enable the left chuck and the right chuck to be unfolded outwards is arranged on the chuck body outside the chuck leading-in hole. One end of the chuck body is sent into the tube expanding cavity from the side surface of the tube expanding body, the chuck body in the tube expanding cavity clamps the tube to be processed through the left chuck and the right chuck, the chuck body outside the tube expanding cavity can enable the left chuck and the right chuck to be unfolded outwards through the force application handle, when the tube expanding device is used, the left chuck and the right chuck can be opened through the force application handle firstly, then the tube to be processed is clamped, then the clamping end of the chuck body clamping the tube to be processed is sent into the tube expanding cavity, the port of the tube to be processed is aligned with the tube expanding head, the tube expanding cavity limits the front position and the rear position of the chuck body, the tube expanding processing can be implemented through the tube expanding head, the structure is simple, the clamping is convenient and rapid, the operation of holding by two hands is not needed in the.

Preferably, the left chuck and the right chuck extend out of the chuck guide hole and are rotatably connected to the rotating shaft, and the left chuck and the right chuck on the outer side of the rotating shaft are respectively connected with the force application handle in an integrated manner. The outer side ends of the left chuck and the right chuck are respectively connected with the force application handle in an integrated mode, lever type clamping connection is kept through the rotating shaft, and the clamping device is simple in structure, high in strength and convenient to assemble and disassemble.

Preferably, the rotating shaft is sleeved with a return spring which can drive the left chuck and the right chuck to clamp the pipe to be processed. The clamping end of the chuck body can be always kept in a clamping state by arranging the return spring.

More preferably, a matched positioning convex head and a matched positioning concave groove are arranged between the matching surfaces of the left chuck and the right chuck. The matched surfaces of the left chuck and the right chuck are provided with the mutually matched positioning raised heads and positioning grooves, and the positioning raised heads are inserted into the positioning grooves to perform positioning in the clamping state of the pipe to be processed, so that the left chuck and the right chuck are prevented from being axially dislocated to influence the pipe expanding processing precision.

Preferably, a circular clamping opening matched with the pipe fitting to be processed is formed by enclosing the left clamping head and the right clamping head in the pipe expanding cavity. The circular clamping opening is matched with the pipe fitting to be processed, so that the pipe fitting to be processed is accurately positioned.

More preferably, the circular clamping opening edge corresponding to the tube expanding head extends outwards to form a conical hole. The conical surface hole is in the shape of a bell mouth of a pipe fitting to be processed, so that the forming precision of pipe expanding processing is ensured and controlled.

Preferably, the left chuck and the right chuck in the pipe expanding cavity are respectively provided with a positioning notch, the inner wall surface of the pipe expanding cavity corresponding to one positioning notch is provided with a mutually matched positioning convex column, and the pipe expanding cavity corresponding to the other positioning notch is provided with a pressure head capable of extending into the pipe expanding cavity. The positioning notches, the positioning convex columns and the pressure heads are arranged on the two sides of the left chuck and the right chuck respectively and are matched with each other, when the chuck is sent into the tube expanding cavity, the positioning notches and the positioning convex columns on one side can be matched with each other for positioning, the pressure heads are screwed in the other side and are matched with the corresponding positioning notches for positioning, so that the radial position and the axial position of the chuck in the tube expanding cavity are accurately positioned, and the tube expanding processing quality is ensured.

Preferably, the end face of the chuck body adjacent to the pipe expanding head is rotatably connected with a baffle plate, the end face of the pipe to be processed is abutted on the outer side face corresponding to the inner side end of the baffle plate, and the outer side end of the baffle plate extends out of the chuck leading-in hole. The baffle is arranged on the inner side end face of the chuck body, so that the axial position of the pipe fitting to be machined can be accurately positioned, and the pipe expanding machining quality is guaranteed.

More preferably, the outer end of the baffle extends outwards along the axial direction to form a flange, and the flange is hooked on the force application handle. The turnup hooked on the force application handles is arranged at the outer side end of the baffle, so that when the baffle is clamped, the left force application handle and the right force application handle are pulled close to each other, the baffle can be driven to automatically rotate towards the center of the circular clamping opening close to one side of the baffle, after a pipe to be machined is placed, the end of the pipe to be machined can be abutted to the baffle to be automatically aligned, the pipe to be machined can be accurately clamped in the circular clamping opening after the force application handles are loosened, and the baffle is automatically pushed to be unfolded during the machining process of expanding the pipe head.

Therefore, the utility model discloses a chuck structure for expander has following advantage: the pipe expanding machine has the advantages that the left and right chucks are opened through the force application handle, then a pipe to be processed is clamped, the chuck body clamping the pipe to be processed is sent into the pipe expanding cavity, the port of the pipe to be processed is aligned to the pipe expanding head, pipe expanding processing can be carried out through the pipe expanding head, the structure is simple, clamping is convenient and rapid, double-hand holding operation is not needed in the process, safety and reliability are realized, and pipe expanding processing quality is guaranteed; the left chuck and the right chuck are prevented from being axially dislocated by arranging the matched positioning raised head and the matched positioning groove between the matching surfaces of the left chuck and the right chuck; positioning notches are respectively arranged on the two sides of the left chuck and the right chuck and are matched with the positioning convex columns and the pressure head, so that the radial position and the axial position of the chuck body in the pipe expanding cavity are accurately positioned; the baffle is arranged at the inner side end of the chuck body, so that the axial position of the pipe fitting to be machined can be accurately positioned, and the pipe expanding machining quality is guaranteed.

Description of the drawings:

FIG. 1 is a cross-sectional view of a first embodiment of the present invention;

FIG. 2 is a transverse cross-sectional view of FIG. 1;

FIG. 3 is a cross-sectional view of a second embodiment of the present invention;

fig. 4 is a schematic structural view when the present invention is deployed.

The specific implementation mode is as follows:

the technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example 1:

as shown in fig. 1, the utility model discloses a chuck structure for pipe expander, including the pipe expander body 1 of manual pipe expander and the pipe expander head 2 screwed in the pipe expander body 1, the pipe expander body 1 corresponding to the pipe expander head 2 is provided with the pipe expander cavity 3, the side wall of the pipe expander cavity 3 perpendicular to the shaft of the pipe expander head 2 is provided with a chuck introduction hole 4, the chuck introduction hole 4 is inserted into the clamping end of the chuck body 5, the outer side surface of the clamping end of the chuck body 5 is abutted on the outer wall surface of the corresponding pipe expander cavity 3, as shown in fig. 4, the chuck body 5 comprises a left chuck 7 and a right chuck 8 which are symmetrically arranged, the left chuck 7 and the right chuck 8 are in a square shape after being combined, and the front ends of the two jointly enclose to form a circular clamp 12 which is matched with the pipe fitting 6 to be processed, the edge of the circular clamp 12 corresponding to the pipe expander head 2 extends outwards to form a conical surface hole 13, wherein the circular clamp 12 is in a semicircular shape on the left chuck 7 and the right chuck 8, the rear ends of the left chuck 7 and the right chuck 8 are respectively connected with a force application handle 9 in an integrated manner, the left chuck 7 and the right chuck 8 close to the force application handle 9 are rotatably connected through a rotating shaft 10, a return spring 11 capable of driving the left chuck 7 and the right chuck 8 to be closed is arranged between the two force application handles 9, a positioning raised head 17 and a positioning groove 18 which are mutually matched are arranged between the matching surfaces of the left chuck 7 and the right chuck 8 corresponding to the outer side of the circular chuck opening 12, the positioning raised head 17 is a cylindrical pin which is vertically inserted and fixed on the matching surface of the left chuck 7, the positioning groove 18 is arranged on the matching surface corresponding to the right chuck 8, the raised head 17 is led into the positioning groove 18 for convenience of positioning, and the outer side end of the cylindrical pin extends outwards and inwards to. The end face of the chuck body 5 adjacent to the pipe expanding head 2 is also rotatably connected with a tongue-shaped baffle plate 19, the middle part of the baffle plate 19 is sleeved on the rotating shaft 10, the outer side end of the baffle plate 19 extends out of the chuck leading-in hole 4, the end part of the baffle plate extends towards a clamping opening formed between the two force application handles 9 to form a flanging 20, the flanging 20 is hooked on the force application handles 9, the width of the flanging 20 is the minimum distance formed between the two force application handles 9, the inner side end of the baffle plate 19 extends into the circular clamping opening 12, and during clamping, the end face of the pipe 6 to be machined abuts against the side face of the baffle plate 19 to limit the axial position of the pipe 6 to be machined. As shown in fig. 2, the middle parts of the outer side surfaces of the left collet 7 and the right collet 8 in the tube expanding cavity 3 are respectively provided with a positioning notch 14, the inner wall surface of the tube expanding cavity 3 corresponding to the positioning notch 14 on the left collet 7 is provided with a mutually matched positioning convex column 15, the outside of the tube expanding cavity 3 corresponding to the positioning notch 14 on the right collet 8 is vertically screwed with a pressure head 16, and the screwed end of the pressure head 16 passes through the tube expanding body 1, extends into the tube expanding cavity 3 and is mutually matched and abutted in the positioning notch 14.

Example 2:

as shown in fig. 3, the expander is an electric expander, a connecting rod driving mechanism is provided on the expander body 1 corresponding to the periphery of the tube expanding cavity 3, a pressure head 16 at the inner side end of the connecting rod driving mechanism extends into the tube expanding cavity 3 and is abutted against the positioning notch 14, the outer side end of the connecting rod driving mechanism can be driven by a handle and is linked with an electric control system, a return spring 11 for driving the left collet 7 and the right collet 8 to close is sleeved on a rotating shaft 10 (not shown in the figure), and the rest is completely the same as that of the embodiment 1.

The specific embodiments described herein are merely illustrative of the principles of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a chuck structure for expander, includes expander body (1) and locates expander body (1) in expand tube head (2), is equipped with on expander body (1) that corresponds with expander head (2) and expands lumen (3), its characterized in that: the side wall of the tube expanding cavity (3) is provided with a chuck leading-in hole (4), one end of a chuck body (5) is inserted into the chuck leading-in hole (4), the chuck body (5) in the tube expanding cavity (3) is provided with a left chuck (7) and a right chuck (8) which can clamp a pipe fitting (6) to be processed, and the chuck body (5) outside the chuck leading-in hole (4) is provided with a force application handle (9) which can enable the left chuck (7) and the right chuck (8) to be unfolded outwards.

2. The holder structure for an expander as claimed in claim 1, wherein: the left chuck (7) and the right chuck (8) extend out of the chuck guide hole (4) and are rotatably connected to the rotating shaft (10), and the left chuck (7) and the right chuck (8) on the outer side of the rotating shaft (10) are respectively connected with the force application handle (9) in an integrated manner.

3. The holder structure for an expander as claimed in claim 2, wherein: the rotating shaft (10) is sleeved with a return spring (11) which can drive the left chuck (7) and the right chuck (8) to clamp the pipe (6) to be processed.

4. The holder structure for an expander as claimed in claim 2, wherein: and a positioning raised head (17) and a positioning groove (18) which are mutually matched are arranged between the matching surfaces of the left chuck (7) and the right chuck (8).

5. The holder structure for an expander as claimed in any one of claims 1 to 4, wherein: a round clamping opening (12) matched with the pipe fitting (6) to be processed is formed by enclosing a left clamping head (7) and a right clamping head (8) in the tube expanding cavity (3).

6. The holder structure for an expander as claimed in claim 5, wherein: the edge of the circular clamping opening (12) corresponding to the tube expanding head (2) extends outwards to form a conical surface hole (13).

7. The holder structure for an expander as claimed in any one of claims 1 to 4, wherein: the outer portions of a left chuck (7) and a right chuck (8) in the tube expanding cavity (3) are respectively provided with a positioning notch (14), the inner wall surface of the tube expanding cavity (3) corresponding to one positioning notch (14) is provided with a positioning convex column (15) which is matched with the inner wall surface, and the tube expanding cavity (3) corresponding to the other positioning notch (14) is provided with a pressure head (16) which can extend into the tube expanding cavity (3).

8. The holder structure for an expander as claimed in any one of claims 1 to 4, wherein: the end face of the chuck body (5) adjacent to the pipe expanding head (2) is rotatably connected with a baffle plate (19), the end face of the pipe (6) to be processed is abutted to the outer side face corresponding to the inner side end of the baffle plate (19), and the outer side end of the baffle plate (19) extends out of the chuck leading-in hole (4).

9. The holder structure for an expander as claimed in claim 8, wherein: the outer side end of the baffle (19) extends outwards along the axial direction to form a flanging (20), and the flanging (20) is hooked on the force application handle (9).