CN212238946U

CN212238946U - Mini pipe expander

Info

Publication number: CN212238946U
Application number: CN202020975958.3U
Authority: CN
Inventors: 陈旭生
Original assignee: Yuhuan Dingli Tools Co ltd
Current assignee: Yuhuan Dingli Tools Co ltd
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2020-12-29
Anticipated expiration: 2030-06-01

Abstract

The utility model provides a mini expander belongs to expander technical field. The problem that an existing pipe expander is large in size and cannot be used for rapidly installing a hole expanding head is solved. The mini pipe expander comprises a pipe expander body and a hole expanding head fastened and connected with the pipe expander body, wherein the pipe expander body is formed by mutually assembling a conical head, a spring, a hollow fixed sleeve and a hollow shaft sleeve which are hollow, the rear end part of the conical head sequentially extends into the hollow fixed sleeve and the hollow shaft sleeve and is fixed with the outer side part of the hollow shaft sleeve through a fixing bolt, the rear end part of the hollow fixed sleeve extends into the front end part of the hollow shaft sleeve, the hollow shaft sleeve moves back and forth along the outer wall of the rear end part of the hollow fixed sleeve to drive the conical head to move back and forth, the spring sleeve is arranged on the conical head and is positioned in the hollow shaft sleeve to the conical head moving back and forth, and the front end part of the hollow fixed sleeve extends into the hole expanding head and is quickly and fixedly connected. The utility model has the advantages of small volume, strong practicability and rapid installation of the reaming head.

Description

Mini pipe expander

Technical Field

The utility model belongs to the technical field of the expander, a expander is related to, in particular to mini expander.

Background

The expander is a device for extruding and expanding one end of the pipe fitting, and can expand the opening of the pipe fitting so as to facilitate the mutual connection of the pipe fittings. The existing pipe expander is matched with a sliding device for use, and compared with the traditional pipe expander, the pipe expander is more labor-saving and has a good using effect. But the expander inner structure that current and smooth tight device cooperation was used is complicated leads to the volume relatively great, and manufacturing cost is great, in addition through threaded connection between the reaming head in the present expander and the expander body, because the reaming head is dismantled at any time according to the diameter size of different pipe fittings and is changed, consequently regular dismantlement assembly leads to the screw thread wearing and tearing easily, and simultaneously the reaming head of threaded connection and expander body are also troublesome when leaving the factory the assembly, therefore we need a more laborsaving assembly method between reaming head and the expander body to solve above problem.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a mini expander that small, practicality are strong and can install the reaming head fast.

The purpose of the utility model can be realized by the following technical proposal: a mini pipe expander is characterized by comprising a pipe expander body and a hole expanding head fastened and connected with the pipe expander body, wherein the pipe expander body is formed by mutually assembling a conical head, a spring, a hollow fixing sleeve and a hollow shaft sleeve in a hollow shape, the rear end part of the conical head sequentially extends into the hollow fixing sleeve and the hollow shaft sleeve and is fixed with the outer side part of the hollow shaft sleeve through a fixing bolt, the front end part of the hollow shaft sleeve is used for extending into the rear end part of the hollow fixing sleeve, the hollow shaft sleeve moves back and forth along the outer wall of the rear end part of the hollow fixing sleeve so as to drive the conical head to move back and forth, the spring is sleeved on the conical head and is positioned in the hollow shaft sleeve to play a role in buffering the conical head moving back and forth, the front end part of the hollow fixing sleeve extends into the hole expanding head and is rapidly and fixedly connected with the hole expanding head through a quick connection device, and the front end part of the conical head, the reaming head is provided with a plurality of reaming blades which surround each other for the conical head to penetrate, and the reaming blades which surround each other are opened or contracted by the back and forth movement of the conical head;

the quick-connect device constitute by the spacing quick-connect piece of a plurality of and the elastic component that links firmly with corresponding spacing quick-connect piece bottom end, the round platform that the reaming head has the cavity for inside, the first periphery wall of reaming on seted up a plurality of circumference evenly distributed and can supply corresponding spacing quick-connect piece to stretch into spacing connection's rectangle fluting one, rectangle fluting two has all been seted up to the position department that corresponds each rectangle fluting one on the periphery wall of fixed cover front end portion of cavity, rectangle fluting one and rectangle fluting two-phase intercommunication, elastic component and spacing quick-connect piece stretch into in the rectangle fluting two in proper order, elastic component bottom and rectangle fluting two diapalls link firmly mutually, the top an organic whole of spacing quick-connect piece is provided with the surface and is the half sphere of cambered surface form, half sphere and the upper end of spacing quick-connect piece all expose outside the rectangle fluting.

In the mini pipe expander, an arc-shaped groove for passing the semi-sphere is formed in the inner peripheral wall of the reaming head at a position corresponding to a position between each rectangular slot I and the inner end face of the reaming head.

In the mini pipe expander, the inner peripheral wall of the rear end part of the hollow shaft sleeve is provided with the extension sleeve in a radially inward protruding manner, one end of the spring is abutted against the rear end face of the hollow fixing sleeve, and the other end of the spring is abutted against the front end face of the extension sleeve.

In the mini pipe expander, the outer peripheral wall of the hole expanding head is provided with an inward-concave pressing groove at a position corresponding to each rectangular groove.

In the mini pipe expander, one end of the elastic piece and the bottom end of the limiting quick connecting piece are formed by welding the elastic pieces, and the other end of the elastic piece and the two bottom walls of the rectangular groove are formed by welding the elastic pieces.

Compared with the prior art, the mini pipe expander has the advantages of simple internal structure, simple working principle, better realized effect and small volume, and has strong functional practicability; this company is through repeated experiment and comparison simultaneously, the research and design of connecing the device soon compares traditional or current screw-thread fit and has the advantage that more make things convenient for more swift connection, cooperation through between spacing quick-witted and the elastic component that connects soon, can be fast accurate get into the rectangle fluting of reaming head in with the firm spacing connection of reaming head and the fixed cover of cavity, when changing the reaming head, only need press spacing quick-witted that connects, make spacing quick-coupling piece break away from the rectangle fluting of reaming head under the effect of elastic component one, can accomplish the separation of reaming head and the fixed cover of cavity, and has convenient loading and unloading, the advantage of raising the efficiency.

Drawings

Fig. 1 is an exploded view of the mini-expander.

Fig. 2 is a schematic partial sectional structure view of the mini-expander.

In the figure, 1, an expander body; 2. a reaming head; 3. a conical head; 4. a spring; 5. a hollow fixing sleeve; 6. a hollow shaft sleeve; 7. fixing the bolt; 8. a hole expanding blade; 9. limiting a quick connecting piece; 10. an elastic member; 11. a first rectangular slot is formed; 12. a second rectangular slot; 13. a semi-sphere; 14. an arc-shaped groove; 15. pressing the groove; 16. an extension sleeve.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and fig. 2, the mini pipe expander comprises an expander body 1 and an expanding head 2 fastened to the expander body 1, wherein the expander body 1 is formed by assembling a cone head 3, a spring 4, a hollow fixing sleeve 5 and a hollow shaft sleeve 6, the rear end of the cone head 3 sequentially extends into the hollow fixing sleeve 5 and the hollow shaft sleeve 6 and is fixed to the outer side of the hollow shaft sleeve 6 through a fixing bolt 7, the front end of the hollow shaft sleeve 6 is used for the rear end of the hollow fixing sleeve 5 to extend into, and the hollow shaft sleeve 6 moves back and forth along the outer wall of the rear end of the hollow fixing sleeve 5 to drive the cone head 3 to move back and forth, the spring 4 is sleeved on the cone head 3 and located in the hollow shaft sleeve 6 to buffer the cone head 3 moving back and forth, the front end of the hollow fixing sleeve 5 extends into the expanding head 2 and is fast fixed to the expanding head 2 through a quick coupling device, the front end of conical head 3 wears out the fixed cover of cavity 5 and outside reaming head 2 in proper order, reaming head 2 facial make-up is equipped with a plurality of lamellas and centers on the reaming sword 8 that supplies conical head 3 to penetrate each other, reaming sword 8 that makes a plurality of lamellas center on each other through the back-and-forth movement of conical head 3 opens or contracts, along with conical head 3 moves towards reaming sword 8 direction, conical head 3 makes multilobe reaming sword 8 outwards open with 8 jack-ups of reaming sword, if casing spare on reaming sword 8 this moment, just play the reaming effect of this pipe fitting.

In more detail, the quick connection device comprises a plurality of limit quick connection pieces 9 and elastic pieces 10 fixedly connected with the bottom ends of the corresponding limit quick connection pieces 9, the reaming head 2 is a circular table with a cavity inside, the peripheral wall of the reaming head 2 is provided with a plurality of rectangular slots I11 which are uniformly distributed in the circumferential direction and can be used for enabling the corresponding limit quick connection pieces 9 to extend into limit connection, the peripheral wall of the front end part of the hollow fixing sleeve 5 is provided with rectangular slots II 12 at positions corresponding to the rectangular slots I11, the rectangular slots I11 are communicated with the rectangular slots II 12, the elastic pieces 10 and the limit quick connection pieces 9 sequentially extend into the rectangular slots II 12, the bottom ends of the elastic pieces 10 are fixedly connected with the bottom walls of the rectangular slots II 12, one end of the elastic pieces 10 is formed by welding and processing the bottom ends of the limit quick connection pieces 9 through elastic pieces, the other end is formed by welding and processing the bottom walls of the rectangular slots II 12 through elastic pieces, the top ends of the limit, the upper ends of the hemispheroid 13 and the limiting quick connector 9 are exposed out of the rectangular open groove two 12, the inner peripheral wall of the reaming head 2 corresponding to the positions between the rectangular open grooves one 11 and the inner end face of the reaming head 2 is provided with an arc-shaped groove 14 for the passage of the hemispheroid 13, the outer peripheral wall of the reaming head 2 corresponding to the positions of the rectangular open grooves one 11 is provided with an inward concave pressing groove 15, the limiting quick connector 9 is in a rectangular shape and is matched with the rectangular groove one and the rectangular groove two, when the number of the limiting quick connector 9, the elastic part 10, the rectangular open grooves one 11 and the rectangular open grooves two 12 is two, the optimal state is considered, the two rectangular open grooves one 11 are symmetrically arranged on the reaming head 2 from top to bottom, the two rectangular open grooves two 12 are symmetrically arranged on the hollow fixing sleeve 5 from top to bottom, the rectangular open grooves one 11 and the rectangular open grooves two 12 are in one-to-one correspondence and are communicated with each other, the limiting quick connector 9 in the rectangular slot II 12 is pressed down manually, so that the semi-spherical body 13 on the limiting quick connector 9 linearly moves back and forth along the arc-shaped groove 14 on the inner peripheral wall of the reaming head 2, the hollow fixing sleeve 5 is continuously moved towards the reaming head 2 at the moment, when the limiting quick connector 9 is moved to the position of the rectangular slot I11, the limiting quick connector 9 enters the rectangular slot I11 due to the elastic resetting effect of the elastic part 10, the upper end part of the limiting quick connector 9 and the semi-spherical body 13 are positioned in the rectangular slot I11 at the moment, the lower end part of the limiting quick connector 9 is positioned in the rectangular slot II 12, the fastening limiting clamping effect is realized, and the limiting quick connector are quickly connected; during the dismantlement, press semi-sphere 13 to make semi-sphere 13 shift out in the two 12 rectangle fluting, outwards extract the fixed cover of cavity 5 this moment and can accomplish the dismantlement, dismantle the in-process, press offering of groove 15 to provide people and point the space of activity, improve the flexibility ratio and the convenience of pressing, quick replacement that quick connection and quick dismantlement realized reaming head 2 improves the efficiency of changing.

In a further elaboration, the inner peripheral wall of the rear end of the hollow shaft sleeve 6 is provided with an extension sleeve 16 protruding radially inwards, one end of the spring 4 abuts against the rear end face of the hollow fixing sleeve 5, and the other end of the spring abuts against the front end face of the extension sleeve 16 to play a role in buffering.

The specific embodiments described herein are merely illustrative of the spirit 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. A mini pipe expander is characterized by comprising a pipe expander body (1) and a hole expanding head (2) fastened and connected with the pipe expander body (1), wherein the pipe expander body (1) is formed by mutually assembling a conical head (3), a spring (4), a hollow fixing sleeve (5) and a hollow shaft sleeve (6), the rear end part of the conical head (3) sequentially extends into the hollow fixing sleeve (5) and the hollow shaft sleeve (6) and is fixed with the outer side part of the hollow shaft sleeve (6) through a fixing bolt (7), the front end part of the hollow shaft sleeve (6) is used for the rear end part of the hollow fixing sleeve (5) to extend into, the hollow shaft sleeve (6) moves back and forth along the outer wall of the rear end part of the hollow fixing sleeve (5) to drive the conical head (3) to move back and forth, the spring (4) is sleeved on the conical head (3) and is positioned in the hollow shaft sleeve (6) to play a role in buffering the conical head (3) moving back and forth, the front end part of the hollow fixing sleeve (5) extends into the reaming head (2) and is quickly and fixedly connected with the reaming head (2) through a quick connection device, the front end part of the conical head (3) sequentially penetrates out of the hollow fixing sleeve (5) and the reaming head (2), a plurality of reaming blades (8) which are mutually surrounded and used for the conical head (3) to penetrate are arranged on the reaming head (2), and the reaming blades (8) which are mutually surrounded by a plurality of petals are opened or contracted through the back and forth movement of the conical head (3);

the quick connection device comprises a plurality of limiting quick connection pieces (9) and elastic pieces (10) fixedly connected with the bottoms of the corresponding limiting quick connection pieces (9), the reaming head (2) is a round table with a cavity inside, the peripheral wall of the reaming head (2) is provided with a plurality of first rectangular grooves (11) which are uniformly distributed in the circumferential direction and can allow the corresponding limiting quick connection pieces (9) to extend into limiting connection, the peripheral wall of the front end part of the hollow fixing sleeve (5) is provided with second rectangular grooves (12) at positions corresponding to the first rectangular grooves (11), the first rectangular grooves (11) are communicated with the second rectangular grooves (12), the elastic pieces (10) and the limiting quick connection pieces (9) sequentially extend into the second rectangular grooves (12), the bottoms of the elastic pieces (10) are fixedly connected with the bottom walls of the second rectangular grooves (12), and the tops of the limiting quick connection pieces (9) are integrally provided with semi-spherical bodies (13) of which the outer surfaces are cambered surfaces, the upper end parts of the semi-sphere (13) and the limiting quick connecting piece (9) are exposed out of the rectangular second slot (12).

2. A mini expander as claimed in claim 1, wherein the inner circumferential wall of the reaming head (2) is provided with an arc-shaped groove (14) for passing the semi-sphere (13) at a position corresponding to a position between each rectangular slot (11) and the inner end surface of the reaming head (2).

3. A mini-expander as claimed in claim 1, wherein said hollow sleeve (6) has an extension sleeve (16) protruding radially inwards on the inner peripheral wall of the rear end portion thereof, and said spring (4) has one end abutting against the rear end face of the hollow retainer (5) and the other end abutting against the front end face of the extension sleeve (16).

4. A mini expander as claimed in claim 1, wherein the outer peripheral wall of the expander head (2) is provided with inwardly recessed pressing grooves (15) at positions corresponding to the rectangular first slots (11).

5. The mini pipe expander according to claim 1, wherein one end of the elastic member (10) and the bottom end of the limiting quick connector (9) are formed by welding elastic pieces, and the other end and the bottom wall of the rectangular second slot (12) are also formed by welding elastic pieces.