CN214184700U

CN214184700U - A internal diameter expanding unit for pipe

Info

Publication number: CN214184700U
Application number: CN202023047517.6U
Authority: CN
Inventors: 张晓锋
Original assignee: Zhejiang Yongli Steel Co ltd
Current assignee: Zhejiang Yongli Steel Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-09-14
Anticipated expiration: 2030-12-16

Abstract

The application relates to an internal diameter expanding unit for pipe, including workstation, mounting, driving piece and chock plug, the pipe is placed on the workstation, the mounting is used for fixing the pipe on the workstation, driving piece drive chock plug sliding connection is on the inner wall of pipe, the inner wall of pipe is hugged closely to the lateral wall of chock plug. Use the mounting earlier to fix the pipe on the workstation, fill in the inner wall of pipe with the chock plug again, use driving piece drive chock plug to slide along the length direction of pipe, the lateral wall of chock plug is hugged closely the inside wall of pipe and is slided, the position that the deviation appears in the chock plug to the pipe blank inner wall is adjusted, the chock plug that uses the cross section big bit simultaneously can also expand the lateral wall of pipe, whole process one shot forming, can be more convenient expand or the plastic to the pipe blank internal diameter.

Description

A internal diameter expanding unit for pipe

Technical Field

The application relates to the field of pipe blank shaping, in particular to an inner diameter expanding device for a pipe blank.

Background

The tube blank is used for producing steel tube, and usually adopts high-quality (or alloy) solid round steel as tube blank.

After the pipe blank in the prior art is produced, the inner diameter of the pipe blank has deviation and the wall deviation phenomenon is more, the pipe blank needs to be trimmed, and workers usually use tools to knock the inner wall of the pipe blank, so that the shape of the inner wall of the pipe blank is adjusted.

The above-mentioned related technical solutions have the following drawbacks: when the pipe blank is long, it is difficult for a worker to knock the inner wall of the pipe blank away from the port with a tool.

SUMMERY OF THE UTILITY MODEL

In order to shape the inner wall of a tube blank with a long length, the application provides an inner diameter expanding device for the tube blank.

The application provides an internal diameter expanding unit for pipe adopts following technical scheme:

the utility model provides an internal diameter expanding unit for pipe, includes workstation, mounting, driving piece and chock plug, the pipe is placed on the workstation, the mounting is used for fixing the pipe on the workstation, driving piece drive chock plug sliding connection is on the inner wall of pipe, the inner wall of pipe is hugged closely to the lateral wall of chock plug.

Through adopting above-mentioned technical scheme, use the mounting earlier to fix the pipe on the workstation, fill in the inner wall of pipe with the chock plug again, use driving piece drive chock plug to slide along the length direction of pipe, the lateral wall of chock plug is hugging closely the inside wall slip of pipe, the position that the deviation appears to the pipe blank inner wall of chock plug is adjusted, the chock plug that uses the cross section big bit simultaneously can also expand the lateral wall of pipe, whole process one shot forming, can be more convenient expand or the plastic to the pipe blank internal diameter.

Preferably, the mounting includes butt piece, a plurality of first pneumatic cylinder and a plurality of stripper plate, the workstation top is provided with the horizontal pole, and a plurality of first pneumatic cylinders are installed on the horizontal pole, a plurality of stripper plates and the output shaft who corresponds first pneumatic cylinder, first pneumatic cylinder drive stripper plate butt is on the lateral wall at pipe top, the butt piece is installed on the workstation, when the chock plug slides on the pipe inner wall, the one end butt of pipe is on the butt piece.

By adopting the technical scheme, the extrusion force and the friction force generated by the movement of the plug on the inner wall of the tube blank are the main acting forces applied to the tube blank in the shaping process, the abutting parts abut against the end parts of the tube blank, most of the acting forces applied to the tube blank are offset by the abutting parts, the tube blank is extruded on the workbench by the first hydraulic cylinders and the extrusion plates, the probability that the tube blank moves when the plug moves is reduced, and the tube blank is fixed on the workbench.

Preferably, the abutting piece is a sleeve, and a first through hole for the plug head to pass through is formed in the sleeve.

Through adopting above-mentioned technical scheme, the end wall butt of the telescopic surface confession pipe, the chock plug can wear out in following first through-hole simultaneously to make the chock plug can expand the plastic through the inner wall of pipe to the pipe completely.

Preferably, the extrusion plate is located directly over the pipe blank, a first groove is seted up towards one side of pipe blank to the extrusion plate, first groove is the V type setting.

Through adopting above-mentioned technical scheme, when the stripper plate extrudeed the pipe, a part of pipe can get into first recess, and the lateral wall of pipe can be with the both sides lateral wall butt of first recess, and at this moment the pipe receives the extrusion of the power of two differences to the stripper plate can more stably fix the pipe on the fixed block.

Preferably, the plug is arranged in a semi-conical shape.

Through adopting above-mentioned technical scheme, the cross section variation in size of the both ends terminal surface of half cone type chock plug can fill in the pipe earlier with the less one end terminal surface of cross section, then in forcing the whole pipe of filling in of chock plug again, makes things convenient for filling in of chock plug.

Preferably, the connecting parts of the end surfaces of the two ends of the plug head and the outer side wall of the plug head are provided with guide surfaces.

Through adopting above-mentioned technical scheme, because the chock plug is installed on the driving piece by the workman, the workman is when the transport and take the chock plug, and the guide surface of the junction of the both ends terminal surface of chock plug and chock plug lateral wall can reduce the probability that the workman is by the chock plug fish tail, plays the guard action to the workman.

Preferably, the driving piece includes stock and second pneumatic cylinder, and the second pneumatic cylinder is connected on the workstation, and the one end of stock is connected on the output shaft of second pneumatic cylinder, and the other end and the less one end face connection of chock plug cross section of stock.

Through adopting above-mentioned technical scheme, when carrying out the plastic to the pipe billet inner wall, at first pass the inside cavity of pipe billet with the stock, then with the less one end terminal surface connection of chock plug cross section in the one end that the stock wore out the pipe billet, the second pneumatic cylinder of redriving, the output shaft shrink of second pneumatic cylinder makes the stock move towards second pneumatic cylinder one side, the stock drives the chock plug and moves along the inner wall of pipe to realize the plastic of chock plug to pipe.

Preferably, still include the connecting block, connecting block sliding connection is on the workstation, the both ends of connecting block are connected with the output shaft of stock and second pneumatic cylinder respectively.

Through adopting above-mentioned technical scheme, because the length of pipe itself is longer, so the length of the output shaft of stock and second pneumatic cylinder is equally longer, if directly use the output shaft and the chock plug of second pneumatic cylinder to be connected, the output shaft overlength of second pneumatic cylinder breaks easily in tensile process, so use the stock to replace the length of some second pneumatic cylinder output shafts with this probability that reduces the fracture of second pneumatic cylinder output shaft.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the plurality of first hydraulic cylinders and the plurality of extrusion plates are arranged, and the tube blank is extruded on the workbench by the plurality of first hydraulic cylinders and the plurality of extrusion plates, so that the probability of movement of the tube blank when the plug head moves is reduced;

2. the sleeve is provided with the first through hole, so that the plug head can penetrate out of the first through hole, and the plug head can completely expand and shape the inner wall of the tube blank through the tube blank;

3. through setting up connecting block and stock, because the output shaft overlength of second pneumatic cylinder breaks easily in tensile process, so the use of connecting block and stock can reduce the cracked probability of second pneumatic cylinder output shaft.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic view of the assembly of the plug and the long rod according to the embodiment of the present application.

Fig. 3 is a schematic view of the connection block and the long rod and the second hydraulic cylinder according to the embodiment of the present application.

Description of reference numerals: 1. a work table; 11. a placing table; 12. a column; 13. a cross bar; 14. a first hydraulic cylinder; 15. a pressing plate; 16. an extrusion cylinder; 2. a pipe blank; 3. connecting blocks; 31. a second hydraulic cylinder; 32. a long rod; 33. a plug head; 34. a support frame; 35. a roller; 36. a pulley; 4. a sleeve.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses an inner diameter expanding device for a pipe blank.

Referring to fig. 1, the inside diameter expanding device for a tube blank 2 of the present embodiment includes a table 1, a fixing member, a driving member, and a plug 33, a placing table 11 is fixedly connected to a top surface of the table 1, and a length direction of the placing table 11 is parallel to a length direction of the table 1. The placing table 11 is provided with an arc-shaped surface matched with the outer side wall of the tube blank 2, and when the tube blank 2 is placed on the arc-shaped surface, the length direction of the tube blank 2 is parallel to the length direction of the placing table 11. The vertical stand 12 that is fixed with on the workstation 1 vertically, fixedly connected with horizontal pole 13 on the stand 12, horizontal pole 13 are located the top of placing platform 11, and the length direction of horizontal pole 13 is on a parallel with the length direction who places platform 11.

Referring to fig. 1, fig. 2, the mounting includes a plurality of first pneumatic cylinders 14 and a plurality of stripper plate 15, the length direction evenly distributed of horizontal pole 13 is followed to a plurality of first pneumatic cylinders 14, the equal vertical downward setting of output shaft of a plurality of first pneumatic cylinders 14, a plurality of 15 fixed connection of stripper plate are on corresponding first pneumatic cylinder 14, first logical groove has been seted up to one side that first pneumatic cylinder 14 was kept away from to stripper plate 15, the both ends of first logical groove width direction extend to the both ends of 15 width direction of stripper plate, fixedly connected with recipient 16 on the first logical groove, the both ends fixed connection of recipient 16 is on the lateral wall in first logical groove, recipient 16 keeps away from one side lateral wall of stripper plate 15 and has seted up first recess, first recess is the setting of V type. The container 16 is located directly above the blank tube 2, and when the container 16 extrudes the blank tube 2, a part of the blank tube 2 enters the first groove, and the blank tube 2 abuts on both side walls of the container 16.

Referring to fig. 1 and 2, the two ends of the tube blank 2 are communicated, a channel is arranged inside the tube blank 2, the fixing part further comprises a sleeve 4, the sleeve 4 is vertically fixed on the workbench 1, one end of the cross rod 13 far away from the stand column 12 is fixedly connected onto the sleeve 4, the sleeve 4 is abutted to one end face of the tube blank 2, a first through hole is formed in the sleeve 4, and the first through hole is opposite to the channel.

Referring to fig. 1, fig. 3, the driving piece includes stock 32, connecting block 3 and second hydraulic cylinder 31, connecting block 3 is located sleeve 4 and keeps away from one side of pipe 2, the inside cavity that is equipped with of connecting block 3, install four pulleys 36 on the 3 diapalls of connecting block, four pulleys 36 are located the four corners of the 3 diapalls of connecting block respectively, two slide rails have been seted up on the workstation 1, two slide rails are located the both ends of 1 width direction of workstation respectively, four pulleys 36 are sliding connection respectively on two slide rails, connecting block 3 is on workstation 1 through four pulleys 36 sliding connection, connecting block 3's slip direction is on a parallel with the length direction of pipe 2, second through-hole and third through-hole have been seted up respectively to connecting block 3's both ends terminal surface center that is on a parallel with the slip direction, the second through-hole all communicates cavity and external with the third through-hole, wherein the second through-hole is close to sleeve 4 and sets up.

Referring to fig. 1 and 3, one end of the long rod 32 passes through the second through hole and is fixedly connected to the connecting block 3, the other end of the long rod 32 sequentially passes through the first through hole, the channel and extends out of the outside, the plug 33 is detachably connected to the end of the long rod 32 far away from the connecting block 3, and the length direction of the long rod 32 is parallel to the sliding direction of the connecting block 3.

Referring to fig. 1, vertical fixedly connected with support frame 34 on the workstation 1, support frame 34 are located between sleeve 4 and connecting block 3, rotate on the support frame 34 and are connected with gyro wheel 35, and gyro wheel 35 comprises two half cone frustum, and the less one side fixed connection of two half cone frustum cross sections is in the same place, and gyro wheel 35 supports in stock 32 bottom, and when stock 32 moved, gyro wheel 35 followed the motion of stock 32 and took place to roll.

Referring to fig. 1 and 3, the second hydraulic cylinder 31 is fixedly connected to the workbench 1, the second hydraulic cylinder 31 is located on one side of the connecting block 3 away from the sleeve 4, and an output shaft of the second hydraulic cylinder 31 is arranged toward the third through hole. The output shaft of the second hydraulic cylinder 31 passes through the third through hole and is fixedly connected to the connecting block 3, and the length direction of the output shaft of the second hydraulic cylinder 31 is parallel to the sliding direction of the connecting block 3. The cross-sectional area of the output shaft of the second hydraulic cylinder 31 is larger than that of the long rod 32, and the length of the output shaft of the second hydraulic cylinder 31 is larger than that of the long rod 32.

Referring to fig. 1, fig. 3, chock plug 33 is the setting of semicircle cone type, the spigot surface has all been seted up with the junction of chock plug 33 lateral wall to the both ends terminal surface of chock plug 33, has seted up the through-hole on the chock plug 33, and the both ends of through-hole extend to the both sides side of chock plug 33, and stock 32 passes from through-hole department, and stock 32 keeps away from and sets up the screw thread on the one end lateral wall of connecting block 3, and when the tip that connecting block 3 was kept away from to stock 32 passed chock plug 33, the tip thread tightening that connecting block 3 was kept away from to stock 32 has the bolt, and the bolt blocks chock plug 33 and moves towards bolt one side.

The implementation principle of the inner diameter expanding device for the tube blank 2 in the embodiment of the application is as follows: firstly, a tube blank 2 is placed on a placing table 11, one end of the tube blank 2 is abutted to a sleeve 4, then a first hydraulic cylinder 14 is driven to enable an extrusion cylinder 16 to extrude the side wall of the tube blank 2, then a second hydraulic cylinder 31 is driven to enable an output shaft of the second hydraulic cylinder 31 to move towards one side of the tube blank 2, the output shaft of the second hydraulic cylinder 31 drives a connecting block 3 to move, the connecting block 3 drives a long rod 32 to move towards one side of the tube blank 2, the long rod 32 moves downwards under the support guide of a roller 35 to sequentially penetrate through a first groove and a channel, and then an operator installs a plug 33 at the end part of the long rod 32, which is far away from the connecting block 3; the output shaft of redriving second pneumatic cylinder 31 contracts, stock 32 is connected through connecting block 3 and second pneumatic cylinder 31 and also follows the output shaft of second pneumatic cylinder 31 and removes, stock 32 drives chock plug 33 and slides along the length direction of pipe 2, the inside wall slip of pipe 2 is hugged closely to the lateral wall of chock plug 33, the position that the deviation appears in chock plug 33 to 2 inner walls of pipe blank is adjusted, use the chock plug 33 that the cross section is big a bit simultaneously can also expand the lateral wall of pipe 2, whole process one shot forming, can be more convenient expand or the plastic to 2 internal diameters of pipe blank.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An internal diameter expanding device for a tube blank is characterized in that: the pipe blank driving device comprises a workbench (1), a fixing part, a driving part and a plug head (33), wherein the pipe blank (2) is placed on the workbench (1), the fixing part is used for fixing the pipe blank (2) on the workbench (1), the driving part drives the plug head (33) to be connected to the inner wall of the pipe blank (2) in a sliding mode, and the side wall of the plug head (33) is tightly attached to the inner wall of the pipe blank (2);

the mounting includes butt piece, a plurality of first pneumatic cylinder (14) and a plurality of stripper plate (15), workstation (1) top is provided with horizontal pole (13), and a plurality of first pneumatic cylinder (14) are installed on horizontal pole (13), a plurality of stripper plate (15) and the output shaft who corresponds first pneumatic cylinder (14), first pneumatic cylinder (14) drive stripper plate (15) butt is on the lateral wall at pipe (2) top, the butt piece is installed on workstation (1), when chock plug (33) slides on pipe (2) inner wall, the one end butt of pipe (2) is on the butt piece, the butt piece is sleeve (4), set up the first through-hole that supplies chock plug (33) to pass on sleeve (4).

2. An inside diameter expanding device for a pipe blank according to claim 1, wherein: the extrusion plate (15) is located directly over the tube blank (2), a first groove is formed in the side face, facing the tube blank (2), of the extrusion plate (15), and the first groove is arranged in a V shape.

3. An inside diameter expanding device for a pipe blank according to claim 1, wherein: the plug head (33) is arranged in a semi-conical shape.

4. An inside diameter expanding device for a pipe blank according to claim 3, wherein: the connecting parts of the end surfaces of the two ends of the plug head (33) and the outer side wall of the plug head (33) are provided with guide surfaces.

5. An inside diameter expanding device for a pipe blank according to claim 1, wherein: the driving piece comprises a long rod (32) and a second hydraulic cylinder (31), the second hydraulic cylinder (31) is connected to the workbench (1), one end of the long rod (32) is connected to an output shaft of the second hydraulic cylinder (31), and the other end of the long rod (32) is connected with the end face of the smaller end of the cross section of the plug head (33).

6. An inside diameter expanding device for pipe blanks according to claim 5, wherein: still include connecting block (3), connecting block (3) sliding connection is on workstation (1), the both ends of connecting block (3) respectively with the output shaft of stock (32) and second pneumatic cylinder (31).