CN111451564A

CN111451564A - Flat mouthful of built-in vaulting pole tight mechanism that expands

Info

Publication number: CN111451564A
Application number: CN202010438428.XA
Authority: CN
Inventors: 王国强; 丁青松; 王祝平
Original assignee: Changzhou Kunda Welding Technology Co ltd
Current assignee: Changzhou Kunda Welding Technology Co ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-07-28

Abstract

The invention discloses a flatting machine internal stay bar expansion mechanism, which belongs to the technical field of flatting machines, and particularly relates to a flatting machine internal stay bar expansion mechanism, which comprises a rotary disk and a cylinder, wherein the cylinder comprises a cylinder outer wall, a cylinder piston and an internal pull rod, the cylinder piston is positioned in an inner cavity of the cylinder outer wall and is movably connected with the cylinder outer wall, the internal pull rod is rotatably connected to the right side of the cylinder piston through a bearing, the right side of the internal pull rod is sleeved with a sliding sleeve, an internal sliding sleeve group is arranged between the right side of the sliding sleeve and the internal pull rod, the right side of the internal pull rod is sleeved with an internal expansion sleeve, the internal expansion sleeve is positioned at the right side of the internal sliding sleeve group, the outer wall of the right side of the internal pull rod is provided with a shaft shoulder, the right side of the internal pull rod is sleeved with an external expansion sleeve, the right side of the, the internal and external structures and the installation position of the cylinder are adjusted, the length of the positioning pull rod is shortened, and the deformation rate is reduced.

Description

Flat mouthful of built-in vaulting pole tight mechanism that expands

Technical Field

The invention relates to the technical field of a flat head machine, in particular to a stay bar expansion mechanism in the flat head machine.

Background

The flat machine is also called end milling machine and flat machine. The method adopts the foreign advanced technology, can process the pipe orifices of the stainless steel, iron, aluminum and other pipes, has the characteristics of good processing quality, low cost and high efficiency, and is an ideal choice for processing the plain orifices of two ends of various pipes.

The principle of a common flatting internal stay bar expansion mechanism is that a cylinder drives an internal pull bar to move, and an internal expansion die and an external expansion die are subjected to oblique cutting expansion, so that the external expansion die is expanded outwards to be tightly attached to the inner wall of a workpiece; secondly, the original cylinder can not rotate around the positioning pull rod in the axial direction.

Disclosure of Invention

The invention aims to provide a flatting machine stay bar expansion mechanism, which aims to solve the problems that the conventional flatting machine stay bar expansion mechanism in the background art has the two defects that an air cylinder drives an inner pull rod to move, and an inner expansion die and an outer expansion die are subjected to oblique cutting expansion, so that the outer expansion die is expanded outwards to be tightly attached to the inner wall of a workpiece; secondly, the problem that the original cylinder cannot rotate axially around the positioning pull rod is solved.

In order to achieve the purpose, the invention provides the following technical scheme: a flat mouth machine stay bar expansion mechanism comprises a rotary disk and a cylinder, wherein the cylinder comprises a cylinder outer wall, a cylinder piston and an inner pull rod, the cylinder piston is positioned in an inner cavity of the cylinder outer wall and is movably connected with the cylinder outer wall, the inner pull rod is rotatably connected to the right side of the cylinder piston through a bearing, a sliding sleeve is sleeved on the right side of the inner pull rod, an inner sliding sleeve set is installed between the right side of the sliding sleeve and the inner pull rod, an inner expansion sleeve is sleeved on the right side of the inner pull rod, the inner expansion sleeve is positioned on the right side of the inner sliding sleeve set, a shaft shoulder is arranged on the right side of the inner pull rod, an outer expansion sleeve is sleeved on the right side of the inner pull rod, a retaining shoulder is arranged on the right side of the outer expansion sleeve, the shaft shoulder is in contact with the retaining shoulder, an external thread is arranged on the outer wall of the right side, the rotary disk is connected with the cup joint of cylinder outer wall, the cup joint hole has been seted up at the rotary disk middle part, the cylinder outer wall runs through the cup joint hole, the fixed orifices has been seted up in the rotary disk left side, the rotary disk left side is seted up flutedly, the recess is the annular groove, install first sealing washer in the recess, the screw thread mounting hole has been seted up to the rotary disk downside, the spiro union has the air pipe to connect in the screw thread mounting hole, the intercommunicating pore has been seted up to screw thread mounting hole top, cup joint downthehole wall and seted up the air cavity, intercommunicating pore and air cavity intercommunication, cylinder outer wall fixedly connected with intake pipe, intake pipe.

Preferably, the diameter of the inner pull rod on the left side of the shaft shoulder is larger than that of the inner pull rod on the right side of the shaft shoulder.

Preferably, the inner diameter of the outer expansion sleeve on the left side of the retaining shoulder is larger than that of the outer expansion sleeve on the right side of the retaining shoulder.

Preferably, a gasket is arranged between the outer expansion sleeve and the adjusting nut.

Preferably, the side wall of the sleeve hole is provided with a sealing groove, and a second sealing ring is arranged in the sealing groove.

Preferably, the number of the sealing grooves is two, and the sealing grooves are uniformly distributed on the left side and the right side of the sleeve hole.

Preferably, reset spring right side fixedly connected with mounting panel, the mounting panel is the annular mounting panel, the through-hole has been seted up to the mounting panel, the mounting panel is located cylinder piston left side and passes through the screw connection with cylinder piston, the screw runs through the through-hole and in cylinder piston spiro union.

Preferably, the left side of the mounting plate is fixedly connected with an annular limiting plate, and the inner diameter of the annular limiting plate is 1-2 mm larger than the outer diameter of the return spring.

Preferably, the left end of the return spring and the left end of the rotating disc are located on the same plane.

Preferably, the right end of the inner expansion sleeve is in a conical shape with a large left end and a small right end.

Compared with the prior art, the invention has the beneficial effects that:

1) through the arrangement of the return spring, when the air cylinder does not work, the air cylinder is in a return state through the elasticity of the return spring;

2) the original inner pull rod is insufficient in rigidity due to overlong length, is easy to bend and inaccurate in positioning, and is overlarge in equipment vibration, and the invention adjusts the internal and external structures and the mounting position of the cylinder, shortens the length of the positioning pull rod and reduces the deformation rate through integral redesign and layout;

3) through the setting of rotary disk, the cylinder outer wall can take place relative rotation with the rotary disk, and the rotation of cooperation inner pull rod and cylinder piston is connected, makes the cylinder be axial rotation around the inner pull rod.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a rotary disk structure according to the present invention;

FIG. 3 is a schematic view of the outer expansion sleeve of the present invention;

fig. 4 is a schematic view of the spring structure of the present invention.

In the figure: 1 adjusting nut, 2 outer expanding sleeves, 3 inner pull rods, 4 inner expanding sleeves, 5 inner sliding sleeve groups, 6 sliding sleeves, 7 cylinder outer walls, 8 bearings, 9 reset springs, 10 cylinder pistons, 11 second sealing rings, 12 rotating discs, 13 air pipe connectors, 14 external threads, 15 gaskets, 16 shaft shoulders, 17 retaining shoulders, 18 mounting plates, 19 through holes, 20 annular limiting plates, 21 sealing grooves, 22 sleeve-joint holes, 23 thread mounting holes, 24 communicating holes, 25 grooves, 26 fixing holes, 27 first sealing rings and 28 air cavities.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-4, the present invention provides a technical solution: a flat mouth built-in stay bar expansion mechanism comprises a rotary disk 12 and a cylinder, wherein the cylinder comprises a cylinder outer wall 7, a cylinder piston 10 and an inner pull rod 3, the cylinder piston 10 is positioned in an inner cavity of the cylinder outer wall 7 and movably connected with the cylinder outer wall 7, the inner pull rod 3 is rotatably connected to the right side of the cylinder piston 10 through a bearing 8, a bearing hole is formed in the side surface of the cylinder piston 10, the bearing 8 is installed in the bearing hole, the bearing 8 is fixed in the bearing hole through a bearing cover plate, the inner pull rod 3 is sleeved with the bearing 8, the matching mode is interference fit, a sliding sleeve 6 is sleeved on the right side of the inner pull rod 3, an inner sliding sleeve set 5 is installed between the right side of the sliding sleeve 6 and the inner pull rod 3, the sliding sleeve 6 is a sliding sleeve for cutting feeding, the inner pull rod 3 is rotatably connected with the sliding sleeve 6 through the inner sliding sleeve set 5, an inner expansion sleeve 4 is sleeved on the, the outer wall of the right side of the inner pull rod 3 is provided with a shaft shoulder 16, the right side of the inner pull rod 3 is sleeved with an outer expansion sleeve 2, the right side of the outer expansion sleeve 2 is provided with a retaining shoulder 17, the shaft shoulder 16 is in contact with the retaining shoulder 17, the position of the outer expansion sleeve 2 on the inner pull rod 3 is limited through the arrangement of the shaft shoulder 16 and the retaining shoulder 17, the outer wall of the right side of the inner pull rod 3 is provided with an external thread 14, the right side of the inner pull rod 3 is screwed with an adjusting nut 1 through the external thread 14, the position of the outer expansion sleeve 2 is fixed through the adjusting nut 1, so that the outer expansion sleeve 2 cannot move, the adjusting nut 1 is positioned on the right side of the outer expansion sleeve 2, the rotating disc 12 is positioned on the right side of the outer wall 7 of the cylinder, the rotating disc 12 is connected with the outer wall 7 of the cylinder in a sleeved manner, the middle part of the rotating disc 12 is, the bolt is installed through a fixing hole 26, so that the rotating disc 12 is fixed on an external anti-rotation device, a groove 25 is formed in the left side of the rotating disc 12, the groove 25 is an annular groove, a first sealing ring 27 is installed in the groove 25, the rotating disc 12 and the anti-rotation device are sealed through the arrangement of the first sealing ring 27, a threaded installation hole 23 is formed in the lower side of the rotating disc 12, an air pipe joint 13 is screwed in the threaded installation hole 23 and connected with an external air pipe through the air pipe joint 13, a communication hole 24 is formed above the threaded installation hole 23, an air cavity 28 is formed in the inner wall of the sleeved hole 22, the communication hole 24 is communicated with the air cavity 28, an air inlet pipe is fixedly connected to the outer wall 7 of the air cylinder and communicated with the air cavity 28, high-pressure gas of the external air pipe enters the communication hole 24 through the air pipe joint 13, and high-pressure gas, thereby driving the cylinder piston 10 to move, the left side of the cylinder piston 10 is provided with the return spring 9, and when the cylinder does not work, the cylinder is in a reset state through the elasticity of the return spring 9.

The diameter of the inner pull rod 3 on the left side of the shaft shoulder 16 is larger than that of the inner pull rod 3 on the right side of the shaft shoulder 16.

The inner diameter of the outer expanding sleeve 2 on the left side of the retaining shoulder 17 is larger than that of the outer expanding sleeve 2 on the right side of the retaining shoulder 17.

Install gasket 15 between cover 2 and the adjusting nut 1 that expands outward, improve the steadiness of adjusting nut 1 installation, prevent to make cover 2 that expands outward can remove about adjusting nut 1 becomes flexible.

The sealing groove 21 has been seted up to the cup joint hole 22 lateral wall, install second sealing washer 11 in the sealing groove 21, second sealing washer 11 is rubber seal, through the setting of second sealing washer 11, improves the gas tightness of cylinder outer wall 7 when rotating in rotary disk 12, can both guarantee when making cylinder outer wall 7 axial rotation to any angle that outside air current does not get into rotary disk 12 inside, avoids the cylinder phenomenon of leaking gas to appear.

The quantity of seal groove 21 is two and evenly distributed in the left and right sides of cup jointing hole 22, improves the leakproofness.

Reset spring 9 right side fixedly connected with mounting panel 18, mounting panel 18 is annular mounting panel 18, through-hole 19 has been seted up to mounting panel 18, mounting panel 18 is located cylinder piston 10 left side and passes through the screw connection with cylinder piston 10, the screw runs through-hole 19 and in cylinder piston 10 spiro union, through mounting panel 18's setting, is convenient for install and dismantles reset spring 9.

The mounting panel 18 left side fixedly connected with ring limiting plate 20, ring limiting plate 20 internal diameter is greater than reset spring 9 external diameter 1mm-2mm, avoids the reset spring 9 to appear crooked after long-time the use.

The left end of the reset spring 9 and the left end of the rotating disk 12 are positioned on the same plane, so that the cylinder is convenient to reset.

The right end of the inner expansion sleeve 4 is in a conical shape with a large left end and a small right end, the left end of the outer expansion sleeve 2 can be obliquely cut with the right end of the inner expansion sleeve 4 to enlarge the outer diameter of the outer expansion sleeve 2, the expansion mechanism is attached to a workpiece, the inner diameter of the left side of the outer expansion sleeve 2 is larger than the outer diameter of the inner pull rod 3 on the left side of the retaining shoulder 17 by 1-2 mm, and the outer expansion sleeve 2 and the inner expansion sleeve 4 can be obliquely cut to enlarge the outer diameter of the outer expansion sleeve 2.

The working principle is as follows: the left end of a cylinder piston 10 is additionally provided with a return spring 9, so that when the cylinder does not work, the cylinder is in a reset state through the elasticity of the return spring 9, the cylinder is connected with an external air pipe through an air pipe joint 13 to convey air to the cylinder, the arrangement of a first sealing ring 27 and a second sealing ring 11 ensures that the device has good air tightness, compressed air enters an inner cavity of the cylinder through a communication hole 24 and an air cavity 28, so that the cylinder piston 10 pulls an inner pull rod 3 to drive an outer expansion sleeve 2 to move leftwards, the tail end of the inner expansion sleeve 4 is attached to a sliding sleeve 6, after the outer expansion sleeve 2 moves to be in contact with the inner expansion sleeve 4, the left end of the outer expansion sleeve 2 and the right end of the inner expansion sleeve 4 are obliquely cut, so that the inner expansion sleeve 4 enters a gap between the outer expansion sleeve 2 and the inner pull rod 3, the outer diameter of the outer expansion sleeve 2 is enlarged, an expansion mechanism is attached to a workpiece, when an external force pushes an outer wall 7, make whole set of tight mechanism that expands contract in, fix rotary disk 12 on external anti-rotation device, pass through air pipe joint 13 to compressed air pipe and insert the cylinder inner chamber, realize expanding tightly, do not have winding rotation function, through the setting of interior slip sleeve group 5 and bearing 8 for when cylinder outer wall 7 is rotatory, interior pull rod 3, interior bloated cover 4 and outer bloated cover 2 are all not rotatory.

While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a flat mouthful of built-in vaulting pole tight mechanism that expands, includes rotary disk (12) and cylinder, its characterized in that: the cylinder comprises a cylinder outer wall (7), a cylinder piston (10) and an inner pull rod (3), the cylinder piston (10) is positioned in an inner cavity of the cylinder outer wall (7) and movably connected with the cylinder outer wall (7), the inner pull rod (3) is rotatably connected to the right side of the cylinder piston (10) through a bearing (8), a sliding sleeve (6) is sleeved on the right side of the inner pull rod (3), an inner sliding sleeve set (5) is installed between the right side of the sliding sleeve (6) and the inner pull rod (3), an inner expansion sleeve (4) is sleeved on the right side of the inner pull rod (3), the inner expansion sleeve (4) is positioned on the right side of the inner sliding sleeve set (5), a shaft shoulder (16) is arranged on the outer wall of the right side of the inner pull rod (3), an outer expansion sleeve (2) is sleeved on the right side of the inner pull rod (3), a retaining shoulder (17) is arranged on the right side of the outer expansion, the outer wall of the right side of the inner pull rod (3) is provided with an external thread (14), the right side of the inner pull rod (3) is connected with an adjusting nut (1) through the external thread (14) in a threaded manner, the adjusting nut (1) is positioned on the right side of the outer expansion sleeve (2), the rotary disk (12) is positioned on the right side of the outer wall of the cylinder (7), the rotary disk (12) is connected with the outer wall of the cylinder (7) in a sleeved manner, a sleeved hole (22) is formed in the middle of the rotary disk (12), the outer wall of the cylinder (7) penetrates through the sleeved hole (22), a fixed hole (26) is formed in the left side of the rotary disk (12), a groove (25) is formed in the left side of the rotary disk (12), the groove (25) is an annular groove, a first sealing ring (27) is installed in the groove (25), a threaded mounting hole, intercommunicating pore (24) have been seted up to screw thread mounting hole (23) top, cup joint hole (22) inner wall and seted up air cavity (28), intercommunicating pore (24) and air cavity (28) intercommunication, cylinder outer wall (7) fixedly connected with intake pipe, intake pipe and air cavity (28) intercommunication, reset spring (9) are installed to cylinder piston (10) left side.

2. The flatting machine inner stay bar tensioning mechanism of claim 1, characterized in that: the diameter of the inner pull rod (3) on the left side of the shaft shoulder (16) is larger than that of the inner pull rod (3) on the right side of the shaft shoulder (16).

3. The flatting machine inner stay bar tensioning mechanism of claim 1, characterized in that: the inner diameter of the outer expanding sleeve (2) on the left side of the retaining shoulder (17) is larger than that of the outer expanding sleeve (2) on the right side of the retaining shoulder (17).

4. The flatting machine inner stay bar tensioning mechanism of claim 1, characterized in that: and a gasket (15) is arranged between the outer expansion sleeve (2) and the adjusting nut (1).

5. The flatting machine inner stay bar tensioning mechanism of claim 1, characterized in that: seal groove (21) have been seted up to cup joint hole (22) lateral wall, install second sealing washer (11) in seal groove (21).

6. The flatting machine inner stay bar tensioning mechanism of claim 6, characterized in that: the number of the sealing grooves (21) is two and the sealing grooves are uniformly distributed on the left side and the right side of the sleeve joint hole (22).

7. The flatting machine inner stay bar tensioning mechanism of claim 1, characterized in that: reset spring (9) right side fixedly connected with mounting panel (18), mounting panel (18) are annular mounting panel (18), through-hole (19) have been seted up in mounting panel (18), mounting panel (18) are located cylinder piston (10) left side and pass through the screw connection with cylinder piston (10), the screw runs through-hole (19) and in cylinder piston (10) spiro union.

8. The flatting machine inner stay bar tensioning mechanism of claim 8, wherein: the mounting panel (18) left side fixedly connected with ring-shaped limiting plate (20), ring-shaped limiting plate (20) internal diameter is greater than reset spring (9) external diameter 1mm-2 mm.

9. The flatting machine inner stay bar tensioning mechanism of claim 1, characterized in that: the left end of the return spring (9) and the left end of the rotating disc (12) are positioned on the same plane.

10. The flatting machine inner stay bar tensioning mechanism of claim 1, characterized in that: the right end of the inner expansion sleeve (4) is in a conical shape with a large left end and a small right end.