CN215657110U

CN215657110U - Pipe extrusion is elongated and automatic discharging mechanism

Info

Publication number: CN215657110U
Application number: CN202122069849.2U
Authority: CN
Inventors: 陈昂; 王强
Original assignee: Kunshan Fuma Precision Machinery Co ltd
Current assignee: Kunshan Fuma Precision Machinery Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-01-28
Anticipated expiration: 2031-08-31

Abstract

The utility model discloses a pipe extrusion stretching and automatic discharging mechanism, which comprises a hydraulic cylinder, an ejector rod, an extrusion die and a clamping assembly, wherein the ejector rod comprises a long rod part, an ejector part and a connecting part, the connecting part is fixedly connected with a hydraulic rod of the hydraulic cylinder, the ejector part pushes a pipe blank forwards, the long rod part is sleeved in a central hole of the pipe blank in a penetrating way, the extrusion die is fixed on a frame through a support frame, the middle part of the extrusion die is horizontally provided with a necking for extruding the pipe blank, the clamping assembly comprises a pressing cylinder, a clamping seat and a clamping block, the mechanism utilizes the hydraulic cylinder to push the pipe blank sleeved on the ejector rod forwards in the extrusion die, the pipe blank is extruded inwards by utilizing the necking arranged on the extrusion die, the pipe is gradually extruded and deformed by utilizing the ejecting force of the hydraulic cylinder, so that the pipe blank is elongated and deformed, and when the pipe blank is extruded from the extrusion die, the pipe blank is limited by the clamping assembly, after the ejector rod is drawn out, the pipe material naturally falls into the material carrying box, the extrusion elongation process is simple, the efficiency is high, and the structure is simple and practical.

Description

Pipe extrusion is elongated and automatic discharging mechanism

Technical Field

The utility model relates to the technical field of machining equipment, in particular to a pipe extruding, elongating and automatic discharging mechanism.

Background

Bicycle front axle center pin adopts the pipe material usually, one alleviates whole car weight, two come resources are saved under the sufficient condition of assurance mechanical strength, so many producers all adopt the hollow tube to control the bicycle front wheel as the center pin rotatory, but the pipe material blank structural strength who directly decides is general, need often under the torsional condition at bicycle front axle, the fracture appears easily inadequately in structural strength, the traffic accident takes place, I department is for solving the not good problem of pipe material blank structural strength, adopt the pipe material blank of thick pipe diameter size, through the extrusion internal contraction, make pipe material metal structure extrusion compact, strengthen pipe material structural strength, and the equipment that the pipe material was elongated in the extrusion is less at present, and will fully improve the productivity.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is as follows: in view of the technical requirements in the background art, we design a pipe extrusion lengthening and automatic discharging mechanism, utilize the pneumatic cylinder to push up the pipe blank that will cup joint on the ejector pin to extrusion die internal front, utilize the throat that extrusion die was equipped with to extrude the pipe blank inwards, utilize the top thrust of pneumatic cylinder to extrude the deformation with the pipe gradually, and consequently elongated deformation, when the pipe material warp to accomplish and extrude from extrusion die internal, it is spacing with the pipe material to recycle the centre gripping subassembly, after taking out the ejector pin, the pipe material falls into in the material carrying box naturally, the extrusion is elongated the process simple, high efficiency, but multiple pneumatic cylinders, ejector pin, extrusion die are synchronous to be processed and used side by side, simple structure is practical.

The technical scheme adopted for solving the problems is as follows:

a pipe material extruding, stretching and automatic discharging mechanism, which comprises a hydraulic cylinder, a mandril, an extruding die and a clamping component,

the hydraulic cylinder is fixed on the right side of the frame, a hydraulic rod of the hydraulic cylinder is coaxially and fixedly connected with the mandril,

the ejector rod comprises a long rod part, an ejector part and a connecting part, the connecting part is fixedly connected with a hydraulic rod of the hydraulic cylinder, the ejector part pushes the pipe blank forwards, the long rod part is sleeved in a central hole of the pipe blank in a penetrating way,

the extrusion die is fixed on the frame through a support frame, a necking used for extruding a pipe blank is horizontally arranged in the middle, the diameter of the necking is gradually reduced from the inlet to the outlet, and the diameter of the necking is kept unchanged after the necking is arranged in the middle,

the centre gripping subassembly sets up the export at the extrusion die, including fixing in the frame press cylinder, grip slipper and link firmly the grip block under the telescopic link of pressing the cylinder, the U-shaped hole has been seted up at the terminal surface middle part under the grip block to block the elongated pipe material through the extrusion with the grip slipper that sets up under, treat take out behind the ejector pin, can make pipe material automatic discharging.

And furthermore, limiting sleeves are further arranged on the outer sides of the long rod part and the pushing part, the limiting sleeves position the end parts of the pipe blank, the pipe blank stops moving after contacting the extrusion die, and the limiting sleeves are pushed and reset by a secondary hydraulic rod of the hydraulic cylinder when the ejector rod is retracted.

Furthermore, the radial section of the pushing part is circular, and platforms are arranged on two sides of the pushing part and used for avoiding clamping blocks of the clamping assembly.

Further, the outer diameter dimension of the pipe blank is larger than the minimum inner diameter dimension of the necking.

Further, the length of the long rod part of the ejector rod is larger than the depth of the necking of the extrusion die.

Further, the diameter of the long rod part of the ejector rod is slightly smaller than the inner diameter of the pipe blank.

Further, the radial dimension of the pushing part is smaller than the outer diameter dimension of the pipe blank.

The utility model has the beneficial effects that:

this pipe material extrusion is elongated and automatic discharging mechanism utilizes the pneumatic cylinder will cup joint the pipe material blank on the ejector pin to push up in the extrusion die, the throat that utilizes the extrusion die to be equipped with extrudees the pipe material blank inwards, the jacking force that utilizes the pneumatic cylinder extrudees the deformation with the pipe material gradually, therefore and elongated deformation, when the pipe material warp to accomplish and extrude from the extrusion die, it is spacing with the pipe material to recycle the centre gripping subassembly, take out the ejector pin after, the pipe material falls into the material carrying box naturally, the extrusion is elongated the process simple, high efficiency, can many pneumatic cylinders, the ejector pin, the extrusion die is synchronous to be processed and used side by side, and simple structure is practical.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a schematic structural view of an automatic discharging mechanism for extruding, elongating a tubular material according to this embodiment;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural diagram of the clamping assembly of the present embodiment;

the device comprises a clamping seat 1, a pressing cylinder 2, a clamping block 3, a supporting frame 4, an extrusion die 5, a pipe blank 6, a limiting sleeve 7, a hydraulic cylinder 8, a pushing part 9, a long rod part 10, a rack 11, a hydraulic rod 12, a rubber pad 13, a U-shaped hole 14 and a necking 15.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1 and 2, the present embodiment provides a tube extruding, elongating and automatic discharging mechanism, which includes a hydraulic cylinder 8, a ram, an extrusion die 5 and a clamping assembly.

Specifically, the hydraulic cylinder 8 is fixed on the right side of the frame 11, a hydraulic rod 12 of the hydraulic cylinder 8 is coaxially and fixedly connected with a push rod, the push rod comprises a long rod part 10, a pushing part 9 and a connecting part, the connecting part is fixedly connected with the hydraulic rod 12 of the hydraulic cylinder 8, the pushing part 9 pushes the pipe blank 6 forwards, and the long rod part 10 is sleeved in a central hole of the pipe blank 6 in a penetrating manner.

The extrusion die 5 is fixed on the frame 11 through the support frame 4, the middle part of the extrusion die is horizontally provided with a necking 15 for extruding the pipe blank 6, and the diameter of the necking 15 is gradually reduced from the inlet to the outlet and is kept unchanged after reaching the middle part of the necking.

The centre gripping subassembly sets up in the export of extrusion mould 5, including fixing press cylinder 2, grip slipper 1 in frame 11 and link firmly grip block 3 under the telescopic link of press cylinder, U-shaped hole 14 has been seted up at the terminal surface middle part under the grip block 3 to block through the elongated pipe material of extrusion with grip slipper 1 that sets up under, treat take out behind the ejector pin, can make pipe material automatic discharging.

Referring to fig. 1 and 2, the outer sides of the long rod part 10 and the pushing part 9 are further provided with a limiting sleeve 7, the limiting sleeve 7 positions the end of the pipe blank 6, the pipe blank stops moving after contacting the extrusion die 5, and the limiting sleeve 7 is pushed and reset by a secondary hydraulic rod 12 of the hydraulic cylinder 8 when the ejector rod is retracted.

The further embodiment is that the radial section of the pushing part 9 is circular, and platforms are arranged on two sides of the pushing part and used for avoiding the clamping block 3 of the clamping assembly.

In a further embodiment, the outer diameter of the blank tube 6 is greater than the smallest inner diameter of the constriction 15, so that the blank tube 6 is compressed in the constriction 15 of the extrusion die, resulting in a structurally stronger and tougher metal tube.

In a further embodiment, the length dimension of the long rod part 10 of the ejector rod is larger than the depth dimension of the necking 15 of the extrusion die, so that the limit dimension of the inner wall shrinkage of a pipe blank is always limited in the necking, and the pipe wall is placed to be concave inwards to destroy the structural strength of the pipe.

In a further embodiment, the long rod portion 10 of the ejector pin has a diameter slightly smaller than the inner diameter of the blank 6.

In a further embodiment, the outer diameter of the pushing part 9 is smaller than the minimum inner diameter of the throat 15, so that the pushing part can be pushed without hindrance in the throat.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes, modifications, substitutions and alterations can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, the scope of the present invention being defined by the appended claims and their equivalents.

Claims

1. The utility model provides a pipe material extrusion is elongated and automatic discharging mechanism, includes pneumatic cylinder, ejector pin, extrusion die and centre gripping subassembly, its characterized in that:

2. The tube material extruding, elongating and automatically discharging mechanism according to claim 1, wherein: and limiting sleeves are further arranged on the outer sides of the long rod part and the pushing part and used for positioning the end parts of the pipe blank.

3. The tube material extruding, elongating and automatically discharging mechanism according to claim 1, wherein: the radial section of the pushing part is circular, and platforms are arranged on two sides of the pushing part.

4. The tube material extruding, elongating and automatically discharging mechanism according to claim 1, wherein: the outer diameter of the pipe blank is larger than the minimum inner diameter of the necking, and the radial dimension of the pushing part is smaller than the outer diameter of the pipe blank.

5. The tube material extruding, elongating and automatically discharging mechanism according to claim 1, wherein: the length of the long rod part of the ejector rod is larger than the depth of the necking of the extrusion die.

6. The tube material extruding, elongating and automatically discharging mechanism according to claim 1, wherein: the diameter of the long rod part of the ejector rod is slightly smaller than the inner diameter of the pipe blank.