CN212526555U

CN212526555U - CT tube titanium window screw welding equipment

Info

Publication number: CN212526555U
Application number: CN202020979594.6U
Authority: CN
Inventors: 李文俊; 余以智; 于潇
Original assignee: HANGZHOU KAILONG MEDICAL INSTRUMENTS CO Ltd
Current assignee: HANGZHOU KAILONG MEDICAL INSTRUMENTS CO Ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2021-02-12
Anticipated expiration: 2030-06-02

Abstract

The application relates to a titanium window screw welding device for a CT tube, which comprises a welding gun sleeve, a window positioning block component and a screw welding frame component, wherein the welding gun sleeve is fixed with a welding gun, more than two welding gun sleeve bosses are uniformly distributed on the circumference of the welding gun sleeve, the window positioning block component comprises a welding gun locking sleeve and a window positioning block, the protective gas inlet joint assembly comprises a protective gas inlet joint assembly and a shell positioning main body, wherein a welding gun locking sleeve and a window positioning block are installed on the shell positioning main body, a window arc boss is matched with a window of a processed workpiece, the shell arc boss is matched with the excircle of the processed workpiece, the welding gun sleeve is matched and inserted into the welding gun locking sleeve for positioning, the processed workpiece is arranged on a screw welding frame assembly, the screw welding frame assembly fixes the window positioning block assembly and the processed workpiece together, two welding areas are communicated with a protective gas source through the protective gas inlet joint assembly, a protective gas switch, and only the upper portion of each welding area is communicated with the external air. The device has the advantages of simple structure, convenience in use, high quality, low cost, high efficiency and wide application range.

Description

CT tube titanium window screw welding equipment

Technical Field

The application relates to a welding device for a titanium window screw of a CT tube, which is mainly suitable for non-oxidation welding of the titanium window screw in the air.

Background

The prior art generally welds screws by means of vacuum brazing: the problems with this approach include:

1. the positioning tool is easy to deform at high temperature, so that the positioning of the screw is difficult, and the service life of the tool is short under the high-temperature condition;

2. the vacuum brazing efficiency is low, and the cost is high;

CT tubes typically contain glass parts, which cannot withstand high temperatures;

4. due to the influence of high temperature, the screw strength of vacuum brazing may be reduced.

Disclosure of Invention

The technical problem that this application was solved is overcome the above-mentioned not enough that exists among the prior art, and provides a CT pipe titanium window screw welding equipment that the structure is succinct, convenient to use, the high quality, with low costs, efficient, wide range of application.

The technical scheme adopted by the application for solving the technical problems comprises the following steps: a titanium window screw welding device for a CT tube is characterized by comprising a welding gun sleeve, a window positioning block assembly and a screw welding frame assembly, wherein the welding gun sleeve is fixedly connected with a welding gun, more than two welding gun sleeve bosses are uniformly distributed on the circumference of the welding gun sleeve, the window positioning block assembly comprises a welding gun locking sleeve, a window positioning block, a shielding gas inlet joint assembly and a shell positioning main body, two welding gun locking sleeves and a window positioning block are arranged on the shell positioning main body, a window arc boss at the lower part of the window positioning block is matched with a window of a processed workpiece, a shell arc boss at the lower part of the shell positioning main body is matched with an excircle of the processed workpiece (the excircle of the part near the window of the processed workpiece except the window), the processed workpiece is arranged on the screw welding frame assembly, the screw welding frame assembly fixes the window positioning block assembly and the processed workpiece together, and the, the welding gun sleeve boss and the locking sleeve boss are matched for axial limiting, a welding gun sleeve groove between adjacent welding gun sleeve bosses is matched with the locking sleeve boss for inserting a welding gun sleeve into a welding gun locking sleeve, an inner hole of the welding gun locking sleeve is matched with the outer circle of the welding gun sleeve boss, the window positioning block is installed at the center of the shell positioning main body, two welding areas of the window positioning block assembly are communicated with a shielding gas inlet joint assembly and a shielding gas (nitrogen in a special case) switch through a shielding gas, two tail end steps of a titanium window screw are respectively matched and installed in screw pits on two sides of a window of a workpiece to be processed, the central line of the titanium window screw is coincided with the central line of the corresponding welding gun locking sleeve and the central line of the welding gun sleeve, the central line of the titanium window screw is intersected and. The special case is that the welding gun, the welding gun locking sleeve and the welding gun sleeve are communicated with the outside air from the upper part of the welding area through gaps among the welding gun, the welding gun locking sleeve and the welding gun sleeve, and gas containing oxygen (mixed gas with the ratio of protective gas not meeting the requirement) flows out.

The screw welding frame assembly comprises a window positioning block compression screw, a shell positioning base and a processed workpiece positioning frame, the processed workpiece positioning frame comprises two frames and a fixed beam, the two frames are respectively installed on two sides of the shell positioning base, the fixed beam is fixedly connected with the centers of the upper portions of the two frames, the shell positioning base is matched with a processed workpiece, and the window positioning block compression screw is in threaded connection with the fixed beam to fix the processed workpiece, the screw welding frame assembly and the window positioning block assembly together.

The window positioning block compression screw is provided with a compression block, and the window positioning block compression screw is in threaded connection with the compression block.

And a pressing surface is arranged on the window positioning block, and the lower plane of the pressing block is contacted and attached with the pressing surface during pressing.

This application still is provided with the protective sheath pipe, and the protective sheath pipe adopts insulating non-metallic material to make, and protective sheath pipe internal diameter is unanimous with titanium window screw external diameter, and protective sheath pipe suit covers just in the screw thread portion of titanium window screw (the special case).

The front part of the protective sleeve is in contact with a processed workpiece, and the height of the thread parts of the two titanium window screws is guaranteed to be consistent.

The locking sleeve boss, the welding gun sleeve boss and the welding gun sleeve groove are three in the same manner that the circumferential direction is uniformly distributed and the circumferential radian is approximate (the welding gun sleeve groove is slightly larger than the locking sleeve boss and the locking sleeve boss is slightly larger than the welding gun sleeve boss).

This application shell location base adopts the metal to make, is connected with the earth connection on the shell location base.

This application welder lock sleeve and welder cover are spacing to stop screw hoop through welder cover hoop, and the welder lantern ring is located lock sleeve boss edge below and stretches into (can block welder cover to rotate) welder lock sleeve inner wall to stop screw.

This application shell location main part has two shielding gas passageways towards two welding area territories respectively, and two shielding gas passageways communicate with the protection air supply through respective shielding gas inlet joint subassembly, shielding gas switch respectively.

Compared with the prior art, the application has the following advantages and effects: the structure is simple, the use is convenient, the cost is low, the effect is good, and the application range is wide; the welding position of the screw is accurately positioned to ensure the precision of the welded assembly and create good conditions for subsequent assembly; the welding efficiency of the screw is improved, and the welding cost is reduced; on the basis of ensuring the welding strength, the strength of the screw is not reduced.

Drawings

Fig. 1 is an exploded view of a CT bulb housing as an example of the present application.

Fig. 2 is an exploded view of the embodiment of the present application when the workpiece is a whole CT bulb tube.

FIG. 3 is a schematic cross-sectional view of an embodiment of the present application.

Fig. 4 is a perspective view of an embodiment of the present application.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings by way of examples, which are illustrative of the present application and are not limited to the following examples. The front and back are relative to the direction of the welding gun, and the lower part of the figure 1 is the front and the upper part is the back.

Referring to fig. 1 to 4, the welding gun 1 of the present embodiment is a core operation component for welding, and needs to provide a certain amount of pressure and compression on the head during welding to ensure the firmness of welding.

And 11, a welding gun power line which is connected with the welding gun 1 and the welding machine and is used for supplying current required by welding.

2-welding gun sleeves, which are customized according to the welding requirements of the screws. The three threaded holes in the rear of the welding gun sleeve are used for fixing the welding gun sleeve and a welding gun, and the three welding gun sleeve bosses 21 which are uniformly distributed in the circumferential direction are used for axial limiting of the welding gun sleeve during welding (and provide required pressure and compression amount at the same time). The shape of the welding gun sleeve boss 21 is a cambered surface connected plane, and the structure can enable the welding gun sleeve to smoothly rotate to a working position, so that the resistance in rotation is reduced.

3-welding gun sleeve fastening screw for fixing welding gun sleeve 2 and welding gun 1 together reliably.

4-window locating block component, the window locating block component mainly comprises a welding gun lock sleeve 41, a window locating block 42, a protective gas inlet joint component 43, a shell locating main body 45 and a welding gun sleeve annular (circumferential) limiting screw 44.

45-shell positioning main body, two welding gun locking sleeves (tubular structures, front and back openings) 41 are positioned and welded on the shell positioning main body, a square hole is arranged in the middle of the shell positioning main body and used for positioning and welding a window positioning block 42, a shell arc boss 451 with a wider lower part of the shell positioning main body is attached to the outer circle (shell) of the processed workpiece 6 near a window 61 of the processed workpiece 6, at least, the shell arc boss completely covers two screw pits 62, and air leakage at the lower part of a welding area is prevented.

41-welding gun locking sleeve, wherein the welding gun locking sleeve is welded with the shell positioning main body 45, and the center of the welding gun locking sleeve is the center of the welded titanium window screw 5. Three evenly distributed lock sleeve bosses 411 are arranged at the upper end of the welding gun lock sleeve, and the three lock sleeve bosses 411 are respectively axially limited corresponding to the three welding gun sleeve bosses 21 on the welding gun sleeve 2, so that the pressure and the compression amount during welding are ensured. Three evenly distributed welding gun sleeve grooves 22 between three welding gun sleeve bosses 21 are matched with the locking sleeve bosses 411, the welding gun sleeve bosses 21 are inserted into a certain welding gun locking sleeve 41 along the inner hole (inner wall) 412 of the welding gun locking sleeve between two adjacent locking sleeve bosses 411, then the welding gun sleeve bosses rotate to the position matched with the locking sleeve bosses 411, the locking sleeve bosses 411 are blocked on the welding gun sleeve bosses 21 at the moment, the axial movement of the welding gun sleeve 2 is limited, the welding gun sleeve on the welding gun locking sleeve is circumferentially limited to the limiting screw 44 (the welding gun sleeve 2 is prevented from being continuously rotated along the original rotating direction, the fact that only the arc of the welding gun sleeve boss 21 is approximately rotated is circumferentially limited is ensured, and the welding gun sleeve 2 and the welding gun locking sleeve 41 are reliably positioned. The inner hole 412 of the welding gun locking sleeve is matched with the excircle of the welding gun sleeve boss 21 so as to ensure that the welding gun sleeve is concentric with the welding gun sleeve boss in the welding process, and the structure can ensure that the position of the titanium window screw 5 does not deviate because the titanium window screw 5 is concentric with the welding gun sleeve 2 in the welding process.

42-window positioning block, the window positioning block is welded with the assembly through a square hole in the middle of the window positioning block assembly 4. The lower part of the window positioning block comprises 1 circular arc boss (the lower surface is a boss with a circular arc surface), and the window circular arc boss 422 with narrower width is directly attached to the outer surface of the window 61 of the welded machined workpiece 6 and is used for positioning the height of the window positioning block component 4. The window arc boss 422 and the housing arc boss 451 constitute an arc boss of the present application, and the design is used for positioning of the whole tool (the window center position of the housing is the center reference of the window positioning block). The window positioning block is provided with a pressing surface 421, the pressing surface 421 is attached to the lower plane of the pressing block 75, and when the pressing screw 71 of the window positioning block is screwed, the pressing force is stably transmitted to the pressing surface 421 through the pressing block 75 so as to ensure the stability of the workpiece to be processed (the window arc boss 422 and the shell arc boss 451 are always attached to the window 61 of the workpiece to be processed and the peripheral excircle of the workpiece near the window without loosening), and the overall rigidity of the tool and the part in the welding process. The outer circle of the workpiece 6 near the window 61 of the workpiece 6 is slightly higher than the window 61 of the workpiece 6, and is generally about 0.6 mm higher, or the window 61 of the workpiece 6 is designed to be recessed (lower) than the outer circle of the workpiece 6. In order to ensure that the housing arc boss 451 is matched with the outer circle of the workpiece 6 and better prevent air leakage at the lower part of the welding area, the housing arc boss 451 can also be provided with silica gel with the thickness of 0.2 mm at least at the periphery corresponding to the two screw pits 62.

43-protective gas inlet joint component, wherein the protective gas inlet joint component is externally connected with a gas pipe with the outer diameter of 6mm, and nitrogen enters a welding area through the gas pipe and the component to form protective atmosphere, so that the oxidation of the welding area in the welding process is prevented.

44-the welding gun sleeve is sleeved with a limit screw, and the welding gun sleeve is sleeved with the limit screw through a threaded hole 413 in the middle of the welding gun locking sleeve 41 and screwed into the welding gun locking sleeve 41 for circumferential limit of the welding gun sleeve 2 during welding so as to ensure that the welding gun sleeve 2 cannot be separated from the welding gun locking sleeve 41 due to over-rotation during use. Usually, the welding gun sleeve is located below the edge of the locking sleeve boss 411 towards the limiting screw, so that the welding gun sleeve boss 21 is limited when rotating to the position below the locking sleeve boss 411.

The 5-titanium window screw is fixed at the head of a welding gun through a chuck, and a protective sleeve 51 is sleeved on the welded screw when in use so as to ensure the consistency of the extending length of the titanium window screw (influence pressure and compression), and prevent welding slag from splashing to the thread of the titanium window screw during welding.

51-protective sleeve, the protective sleeve is made of insulating non-metallic materials, the inner diameter of the protective sleeve is consistent with the outer diameter of the titanium window screw, the length (height) of the protective sleeve is a fixed value, the part can guarantee the consistency of the extending length of the titanium window screw (influence pressure and compression amount), and welding slag is prevented from splashing to the threads of the titanium window screw during welding.

6-whole pipe of work piece CT bulb or CT bulb shell, this application work piece can be the CT bulb also can be the shell part of CT bulb, promptly the work piece can be complete CT pipe (contain glass part, shell), also can be solitary CT pipe shell, this application embodiment is applicable to solitary shell and the shell two kinds of situations of installing on complete CT pipe, can be applicable to the welding installation of solitary shell and the maintenance of complete CT pipe, work piece window 61 both sides have two screw pit 62, for the welding position of work piece and titanium window screw 5 tail end step. Two welding areas 5641 are arranged at the center of the lower part of a space surrounded by the titanium window screw 5, the processed workpiece 6, the window positioning block assembly 4 and the welding gun 1, gas flows out from only the upper part of the welding areas 5641 through gaps (not shown in the figure) among the welding gun 1, the welding gun locking sleeve 41 and the welding gun sleeve 2, and each welding area 5641 is controlled to be charged through a corresponding protective gas inlet joint assembly 43 and is provided with a corresponding protective gas switch.

7-a screw welding frame component, wherein the screw welding frame component is composed of a window positioning block compression screw 71, a shell positioning base 72, a processed workpiece positioning frame 74 and a compression block 75.

71-window positioning block compression screw, wherein the window positioning block compression screw is used for integrally compressing the tool and the processed workpiece 6 during welding so as to ensure that an arc below the window positioning block 42 is attached to the outer circle of the processed workpiece 6 during welding and the integral rigidity of the tool and parts during welding. As a specific example, the head (lower end in fig. 3) of the window positioning block hold-down screw 71 is provided with a hold-down block 75 through threads, so that the hold-down distance can be conveniently adjusted, and the hold-down block 75 enlarges the hold-down contact surface with the window positioning block 21, thereby providing more uniform and reliable hold-down force.

72-shell positioning base, the upper surface of which is three V-shaped surfaces with different heights, the three surfaces are attached to different surfaces of the processed workpiece 6 during welding, the stability and the level of the processed workpiece 6 after being placed are ensured, and the whole processed workpiece 6 is uniformly stressed when the window positioning block compression screw 71 is pressed down.

74-a positioning frame for a workpiece, which is composed of two frames 741 and a fixed beam 742 connecting the two frames 741, the head of the pressing screw 71 of the window positioning block passes through the pressing screw hole (not shown) of the window positioning block on the fixed beam 742, and the lower plane of the pressing block 75 connected with the pressing screw presses the pressing surface 421 of the window positioning block when the pressing screw 71 of the window positioning block rotates downward.

73-a grounding wire connected to the housing positioning base 72 for grounding the tooling and the parts during the welding process.

The working steps of this embodiment are as follows:

1. the welding gun sleeve 2 is arranged on the welding gun 1, and the welding gun sleeve and the welding gun are firmly connected together by a welding gun sleeve fastening screw 3;

2. placing the workpiece 6 on the shell positioning base 72, wherein good contact between each excircle of the workpiece 6 and the three sections of V-shaped surfaces of the base is ensured;

3. after the machined workpiece 6 is confirmed to be placed stably, the window arc boss 422 (embedded) of the window positioning block assembly 4 is installed in the machined workpiece window 61, and the shell arc boss 451 is tightly attached to the outer circle of the machined workpiece 6 near the machined workpiece window 61 and completely covers the two screw pits 62;

4. when the pressing screw 71 rotates downwards, the lower plane of the pressing block 75 presses the pressing surface 421 above the window positioning block, so that the window positioning block assembly 4, the screw welding frame assembly 7 and the workpiece 6 are reliably fixed and cannot loosen;

5. after the welding gun power line 11 and the grounding line 73 are properly connected, the welding machine power supply is turned on;

6. a certain titanium window screw 5 is arranged in a chuck at the head of the welding gun 1, and a protective sleeve 51 is sleeved when the titanium window screw is arranged, so that welding slag is prevented from splashing to the surface of the screw when welding;

7. inserting the welding gun sleeve 2 into a certain welding gun locking sleeve 41 and rotating to a working angle (the locking sleeve boss 411 is blocked on the welding gun sleeve boss 21);

8. opening the corresponding protective gas switch to lead nitrogen to enter the periphery of the welding area corresponding to the titanium window screw 5 through the corresponding protective gas inlet joint component 43;

9. after confirming that the nitrogen amount in the welding area is sufficient, pressing a switch on the welding gun 1, and completing the welding of the titanium window screw 5 and the processed workpiece 6 in an energy storage welding mode (the prior art conforms to the GB/T902.3-2008 standard);

10. and (3) unscrewing the welding gun sleeve 2 from the welding gun locking sleeve 41 at the welded position, taking out the used protective sleeve 51 (which can be reused), and repeating the steps from 6 to 10 (when the steps from 6 to 10 are performed for the second time, one is another), so as to finish the welding of another titanium window screw.

Of course, the sequence of some steps in the present application may be slightly changed without affecting the work, for example, the step of mounting the first titanium window screw 5 on the protective sleeve 51 to the head of the welding gun 1 may be performed before the 7 th step, and the fifth step may be performed before the 7 th step, which are all expected by those skilled in the art.

The mechanism that this application comprises welder lock sleeve 41 and welding gun sleeve 2 can provide stable welding pressure (the constancy of rifle head compression can be guaranteed to the structure of axial spacing) under the condition of the rotatory limited angle of welder sleeve (a little less than 60 degrees under the condition that three welding gun sleeve boss 21, three welding gun sleeve recess 22, three lock sleeve boss 411 circumference radian all are close 60 degrees). The bonding strength of the titanium window screw and the shell is metallurgically bonded, the welded workpiece is not deformed and annealed, large-area high temperature cannot be generated, the strength of the titanium window screw is not reduced, the tail end step of the welded titanium window screw is metallurgically bonded with the screw pit 62, the titanium window screw is perpendicular to the excircle of the processed workpiece (the central line of the titanium window screw is intersected and perpendicular with the central line of the processed workpiece), and due to the protection and the limitation of the protective sleeve 51, welding residues cannot exist on the whole thread part, and the height of the whole thread part is consistent.

This application is by the protection of gas microenvironment inert gas protection mechanism that protection gas admission joint subassembly 43 constitutes, makes the welding go on through last exhaust method in the air.

All simple variations and combinations of the technical features and technical solutions of the present application are considered to fall within the scope of the present application.

Claims

1. The utility model provides a CT pipe titanium window screw welding equipment which characterized by: the welding gun comprises a welding gun sleeve, a window positioning block assembly and a screw welding frame assembly, wherein the welding gun sleeve is fixedly connected with a welding gun, more than two welding gun sleeve bosses are uniformly distributed on the circumference of the welding gun sleeve, the window positioning block assembly comprises a welding gun locking sleeve, a window positioning block, a shielding gas inlet joint assembly and a shell positioning main body, two welding gun locking sleeves and one window positioning block are installed on the shell positioning main body, a window arc boss at the lower part of the window positioning block is matched with a window of a processed part, a shell arc boss at the lower part of the shell positioning main body is matched with an excircle of the processed part, the processed part is arranged on the screw welding frame assembly, the screw welding frame assembly fixes the window positioning block assembly and the processed part together, the welding gun locking sleeve is matched with the welding gun sleeve, the welding gun sleeve boss is matched with the locking sleeve boss, and a, an inner hole of a welding gun lock sleeve is matched with an excircle of a welding gun sleeve boss, a window positioning block is installed at the center of a shell positioning main body, two welding areas of a window positioning block assembly are communicated with a shielding gas inlet joint assembly and a shielding gas switch through shielding gas, tail end steps of two titanium window screws are respectively installed in screw pits on two sides of a window of a workpiece to be processed in a matched mode, the center line of each titanium window screw is superposed with the center line of the corresponding welding gun lock sleeve and the center line of the corresponding welding gun sleeve, the center line of each titanium window screw is intersected with and perpendicular to the center line of the workpiece to be processed.

2. The titanium window screw welding device for the CT tube as recited in claim 1, wherein: the screw welding frame assembly comprises a window positioning block compression screw, a shell positioning base and a processed workpiece positioning frame, the processed workpiece positioning frame comprises two frames and a fixed beam, the two frames are respectively installed on two sides of the shell positioning base, the fixed beam is fixedly connected with the centers of the upper portions of the two frames, the shell positioning base is matched with a processed workpiece, and the window positioning block compression screw is in threaded connection with the fixed beam to fix the processed workpiece, the screw welding frame assembly and the window positioning block assembly together.

3. The titanium window screw welding device for the CT tube as recited in claim 1, wherein: the titanium window screw is characterized by further comprising a protective sleeve, the protective sleeve is made of an insulating non-metallic material, the inner diameter of the protective sleeve is consistent with the outer diameter of the titanium window screw, and the protective sleeve is sleeved on the threaded portion of the titanium window screw.

4. The CT tube titanium window screw welding device of claim 3, wherein: the front part of the protective sleeve is in contact with a processed workpiece.

5. The titanium window screw welding device for the CT tube as recited in claim 1, wherein: the shell positioning base is made of metal, and a grounding wire is connected to the shell positioning base.

6. The titanium window screw welding device for the CT tube as recited in claim 1, wherein: the welding gun locking sleeve and the welding gun sleeve are circumferentially limited to the limiting screw through the welding gun sleeve, and the welding gun sleeve ring is located below the edge of the locking sleeve boss towards the limiting screw and extends into the inner wall of the welding gun locking sleeve.

7. The CT tube titanium window screw welding device of claim 2, wherein: the window positioning block compression screw is provided with a compression block, and the window positioning block compression screw is in threaded connection with the compression block.

8. The titanium window screw welding device for the CT tube as recited in claim 1, wherein: the locking sleeve boss, the welding gun sleeve boss and the welding gun sleeve groove are all three and are circumferentially and uniformly distributed.

9. The titanium window screw welding device for the CT tube as recited in claim 1, wherein: and silica gel is arranged on the periphery of the arc boss of the shell corresponding to the two screw pits.

10. The titanium window screw welding device for the CT tube as recited in claim 1, wherein: the shell positioning main body is provided with two protective gas channels facing the two welding areas respectively, and the two protective gas channels are communicated with a protective gas source through respective protective gas inlet joint assemblies and protective gas switches respectively.