CN2772713Y

CN2772713Y - Diameter-variable and core-expanding mechanism of pipe sheet for automatic welder

Info

Publication number: CN2772713Y
Application number: CN 200520068254
Authority: CN
Inventors: 罗登峰
Original assignee: HUAHAN SCI-TECH Co Ltd SUZHOU INDUSTRIAL PARK
Current assignee: HUAHAN SCI-TECH Co Ltd SUZHOU INDUSTRIAL PARK
Priority date: 2005-01-13
Filing date: 2005-01-13
Publication date: 2006-04-19
Anticipated expiration: 2015-01-13

Abstract

The utility model relates to a diameter-variable and core-expanding mechanism for an automatic welder of pipe sheets, which is composed of an expanding body, a clamping head, a core rod, a threaded rod and a regulating nut. The utility model is characterized in that firstly, a connecting rod and a control handle are added, wherein one end of the connecting rod is in movable connection with the bottom of the threaded rod while the other end of the connecting rod is in movable connection with the movable arm of the control handle. The connecting rod penetrates through the base plate of the core rod, and a fulcrum is formed between the middle of connecting rod and the through hole of the base plate of the core rod. The control handle is movably connected with the base plate of the core rod and forms another fulcrum. Secondly, the connecting rod is made of elastic materials. Thirdly, a bearing is arranged between the clamping head, namely that the inner ring of the bearing is fixedly connected with the core rod while the outer ring of the bearing is connected with the clamping head. The utility model allows the core-expanding diameter of the automatic welder of pipe sheets to be artificially changed, so an expanding core can easily go in/out of a welding pipe, and an expanding body can stably and smoothly rotate. Additionally, the utility model effectively solves the difficult problem that the inner diameter difference of various welding pipes influences core-expanding diameter and accuracy positioning.

Description

The tube sheet automatic welder(welding machine) reducing core mechanism that expands

Technical field

The utility model relates to a kind of tube sheet automatic welder(welding machine), especially the bloated core mechanism in this welding machine.

Background technology

Existing tube-plate all-position automatic welder(welding machine) is all finished welding process by rotating welding torch, and this type of welding machine front end has a bloated core, places by welded tube by the core that will expand to guarantee that the welding machine welding track overlaps with the tube sheet seam.The tradition core that expands is that strain by bloated core self is adjacent to the purpose that is reached the location by inner wall of welded pipe.This structure has proposed strict requirement to the external diameter of the core that expands, and should guarantee the accurate location of pad, makes again and expands the core turnover in the operating process easily.Owing to existed the worker poor usually by the internal diameter of welded tube, circularity, tend in actual use cause or locate badly, or the turnover of bloated core is difficult, and then has influence on the further raising of welding quality and speed of welding.

Summary of the invention

The purpose of this utility model is that bloated core is designed to the version that a kind of bloated core diameter can effectively be regulated, that is, the core that expands dwindles bloated core diameter when passing in and out by welded tube, make turnover easily, enlarge (locking) bloated core diameter during the welding beginning, make it the location, and expansion mechanism can rotate with welding torch.

For achieving the above object, the technical solution of the utility model is, the bloated core mechanism of the tube sheet automatic welder(welding machine) reducing that is provided includes bloated body in forming, chuck, core bar, screw rod, regulate nut, chuck is positioned at the axon that expands to two ends, chuck, body expands, the axis of core bar overlaps with screw axis, screw rod places in the core bar, regulate nut and place screw tip, it is characterized in that, also include connecting rod and joystick in the composition, one end of connecting rod and the bottom of screw rod are movably connected, the other end of connecting rod and joystick swing arm are movably connected, and connecting rod passes the core bar chassis, form fulcrum between connecting rod middle part and the core bar chassis through hole, joystick and core bar chassis are movably connected, and form fulcrum.

In technique scheme, connecting rod adopts elastomeric material.

In technique scheme, be provided with bearing between chuck and the core bar, promptly bearing inner race is fixedlyed connected with core bar, and bearing outer ring is then fixedlyed connected with chuck.

Advantage of the present utility model is: but 1, the core diameter manual operation of expanding changes, and makes the core turnover of expanding easy by welded tube on the one hand, simultaneously, bloated core can rotate with respect to welding torch steady and smooth ground, thereby guarantees in welding process the accurate location of welding torch solder joint.2, the connecting rod that is connected with joystick adopts elastomeric material, after joystick reclaims and puts in place, still screw rod is produced suitable pressure by connecting rod elasticity, the operation of joystick is not that pure rigidity puts in place just like this, thereby effectively solve the different problems that had processing worker difference by the sub-internal diameter of welded tube, when guaranteeing welding quality, guarantee that again the intact of welding equipment self is suitable for.

Description of drawings

Fig. 1 is the utility model structure cutaway view.

Fig. 2 is the tube sheet automatic welder(welding machine) profile schematic diagram that adopts the bloated core mechanism of the utility model reducing.

In the above accompanying drawing, the 1st, screw rod, the 2nd, regulate nut, the 3rd, upper grip, the 4th, the core body that expands, the 5th, lower chuck, the 6th, connecting rod, the 7th, joystick, the 8th, core bar, the 9th, the attachment screw of connecting rod and screw rod, the 10th, sleeve pipe, the 11st, upper bearing (metal), the 12nd, lower bearing.

Specific embodiment

Below in conjunction with accompanying drawing, introduce a specific embodiment of the present utility model.

Accompanying drawing 1 has provided the cutaway view of an example of the utility model.

Accompanying drawing 2 is for comprising the bloated core mechanism tube sheet automatic welder(welding machine) structural representation of the utility model reducing.

From accompanying drawing as seen, the conical surface chuck 3 at bloated core body 4 two ends is by bearing 11,12 are and are rotatably connected with core bar 8, the top that is positioned at the screw rod 1 of core bar is regulated also spacing by regulating nut 2, one end of the bottom of screw rod and connecting rod 6 is movably connected by attachment screw 9, connecting rod passes the chassis through hole of core bar 8, form a fulcrum between connecting rod middle part and the core bar chassis through hole, be that connecting rod becomes a simple leverage, joystick 7 rotating fulcrums and core bar chassis are movably connected, also formed a simple leverage, be the power arm that handle portion becomes leverage, the part that is movably connected with the other end of connecting rod then becomes the resistance arm of this leverage.In addition, because connecting rod adopts elastomeric material to make, like this, reclaim when putting state in place when joystick is in, the downward displacement of screw rod can not be a fixed value just.The adjusting nut of screw tip can carry out coarse adjustment to the screw displacement amount, and elastic link has measured fine setting and supplementary function to screw displacement.Exactly because connecting rod has elasticity, just make joystick reclaim under the state that puts in place, the downward displacement of screw rod can be regulated variation in small scope, promptly in welding process, run into a certain be a bit larger tham by the welded tube caliber or when being slightly smaller than other by the welded tube situation, connecting rod reclaims under the state that puts in place at joystick by the deformation of himself, still can keep moderate tension, the downward displacement of screw rod can be changed with being made by the size of welded tube internal diameter fine screw rod.And when connecting rod was rigid material, joystick returns to be pulled the position and directly determines screw displacement amount size, when slightly little by the welded tube internal diameter, can cause joystick can not be fully retrieved to the position, in the case, if operator's Overexertion, force it to put in place, cause the damage of workpiece possibly.

The present embodiment specific operation process is as follows: release on control handle, when soon handle is outwards opened, connecting rod and handle resistance arm connection end point fall, under the effect of connecting rod leverage, connecting rod and screw rod connection end point then rise, the active force that puts on the body upper end chuck that expands is cancelled, and the body that expands reduces its diameter by material self elastic shrinkage, restores to the original state.The core integral body that will expand this moment is inserted into by behind the appropriate location in the welded tube, inside again clawback joystick, at this moment, under joystick leverage and the double effect of connecting rod leverage, screw rod integral body is to bottom offset, and distance between upper grip and the lower chuck furthers, the conical surface by two chucks, force the cubical expansion that expands to be opened, diameter increases, and makes the outer of the body that expands be close to inside pipe wall.When welding torch is a screw axis when rotating around central shaft, bloated body then is transfixion for welded piece.Like this, can guarantee that promptly welding torch solder joint motion track overlaps with circular weld seam, also can make the bloated core of same model be applicable to the pipe of different processing workers differences.

This product operation is easy, and the location is accurate, and the smooth compliance of equipment is good.

Claims

1, the tube sheet automatic welder(welding machine) reducing core mechanism that expands, it includes bloated body in forming, chuck, core bar, screw rod, regulate nut, chuck is positioned at the axon that expands to two ends, chuck, body expands, the axis of core bar overlaps with screw axis, screw rod places in the core bar, regulate nut and place screw tip, it is characterized in that, also include connecting rod and joystick in the composition, an end of connecting rod and the bottom of screw rod are movably connected, and the other end of connecting rod and joystick swing arm are movably connected, connecting rod passes the core bar chassis, form fulcrum between connecting rod middle part and the core bar chassis through hole, joystick and core bar chassis are movably connected, and form fulcrum.

2, the bloated core mechanism of tube sheet automatic welder(welding machine) reducing according to claim 1, it is characterized in that: connecting rod is an elastomeric material.

3, the bloated core mechanism of tube sheet automatic welder(welding machine) reducing according to claim 1 and 2, it is characterized in that: be provided with bearing between chuck and the core bar, promptly bearing inner race is fixedlyed connected with core bar, and bearing outer ring is then fixedlyed connected with chuck.