A CT tube titanium window screw welding method and welding equipment

Abstract

The present application relates to a method and equipment for welding titanium window screws for CT tubes. The welding method includes the following steps: a welding gun sleeve is installed on a welding gun; a workpiece is placed on a screw welding frame assembly; a window positioning block assembly is installed on the workpiece in cooperation; the workpiece, the screw welding frame assembly, and the window positioning block assembly are fixed; the welding gun power line and the grounding line are confirmed to be connected, and the welding machine power is turned on; a titanium window screw is covered with a protective sleeve and then installed into the welding gun head chuck; the welding gun sleeve is inserted into a welding gun locking sleeve and rotated to a working angle; the corresponding protective gas switch is turned on, and the protective gas is passed around the lower part of the corresponding welding area; the welding gun switch is pressed to complete the welding of the titanium window screw by energy storage welding; the welding gun sleeve is unscrewed from the welding gun locking sleeve, the protective sleeve is taken out, and steps S6 to S10 are repeated to complete the welding of another titanium window screw. The present application also includes a welding device for titanium window screws for CT tubes. The present application has a simple structure, is easy to use, has high quality, low cost, high efficiency, and a wide range of applications.

Description

Technical Field

[0001] The present application relates to a CT tube titanium window screw welding method and welding equipment, which are mainly suitable for oxidation-free welding of titanium window screws in the air. Background Art

[0002] The prior art usually uses vacuum brazing to weld screws. The problems of this method include:

[0003] 1. The positioning tooling is easy to deform under high temperature, which makes it difficult to position the screws, and the service life of the tooling is also short under high temperature conditions;

[0004] 2. Vacuum brazing has low efficiency and high cost;

[0005] 3. CT tubes usually contain glass parts, which cannot withstand high temperatures;

[0006] 4. Due to the influence of high temperature, the strength of vacuum brazed screws will decrease. Summary of the invention

[0007] The technical problem solved by the present application is to overcome the above-mentioned deficiencies in the prior art and to provide a CT tube titanium window screw welding method and welding equipment which has a simple structure, is easy to use, has high quality, low cost, high efficiency and wide applicability.

[0008] The technical solution adopted by the present application to solve the above technical problems includes: a CT tube titanium window screw welding method, which is characterized by comprising the following steps:

[0009] S1 welding gun sleeve is installed on the welding gun;

[0010] S2 The processed part is placed on the screw-welded frame assembly;

[0011] The S3 window positioning block assembly is installed on the workpiece (centered on the window and including the window and the outer circle of the workpiece outside the window);

[0012] S4 The processed parts, screw welding frame components and window positioning block components are reliably fixed;

[0013] S5 confirms that the welding gun power line and the grounding line are reliably connected, and turns on the welding machine power;

[0014] S6 A titanium window screw is put into the protective sleeve and then installed into the chuck of the welding gun head, with the step at the tail end of the titanium window screw facing forward;

[0015] Insert the S7 welding gun sleeve into a welding gun locking sleeve and rotate it to the working angle;

[0016] S8 turns on the corresponding shielding gas switch, so that the shielding gas passes through the corresponding shielding gas inlet joint assembly into the surrounding area of ​​the lower part of the corresponding welding area;

[0017] S9 presses the welding gun switch to complete the welding of the titanium window screw and the workpiece by energy storage welding;

[0018] S10 unscrews the welding gun sleeve from the welding gun locking sleeve at the welded part, takes out the used protective sleeve, and then repeats steps S6 to S10 to complete the welding of another titanium window screw.

[0019] The window positioning block assembly of the present application is fitted with the outer circle of the workpiece through the arc boss, completely covering the two screw pits.

[0020] The processed part, the screw-welded frame assembly and the window positioning block assembly of the present application are fixed and pressed by the window positioning block clamping screws.

[0021] The window positioning block clamping screw described in the present application is connected to the screw welding frame assembly through a thread, and the head of the window positioning block clamping screw is threadedly connected to the clamping block.

[0022] The technical solution adopted by the present application to solve the above-mentioned technical problems also includes: a CT tube titanium window screw welding device, characterized in that it includes a welding gun cover, a window positioning block assembly, and a screw welding frame assembly, the welding gun cover is fixedly connected to the welding gun, and the welding gun cover has more than two welding gun cover bosses evenly distributed circumferentially, the window positioning block assembly includes a welding gun locking sleeve, a window positioning block, a shielding gas inlet joint assembly, and a shell positioning body, two welding gun locking sleeves and a window positioning block are installed on the shell positioning body, the lower window arc boss of the window positioning block cooperates with the window of the workpiece, the lower shell arc boss of the shell positioning body cooperates with the outer circle of the workpiece (referring to the outer circle of the part near the window of the workpiece except the window), the workpiece is placed on the screw welding frame assembly, and the screw welding frame assembly holds the window positioning block The assembly and the workpiece are fixed together, the welding gun locking sleeve cooperates with the welding gun sleeve, the welding gun sleeve boss cooperates with the locking sleeve boss for axial limitation, the welding gun sleeve groove between adjacent welding gun sleeve bosses cooperates with the locking sleeve boss for inserting the welding gun sleeve into the welding gun locking sleeve, the welding gun locking sleeve inner hole cooperates with the welding gun sleeve boss outer circle, the window positioning block is installed in the center of the outer shell positioning body, the two welding areas of the window positioning block assembly are connected to the shielding gas source through the shielding gas inlet joint assembly and the shielding gas (nitrogen as a special case) switch, the two titanium window screw tail end steps are respectively installed in the screw pits on both sides of the window of the workpiece, the center line of the titanium window screw coincides with the corresponding welding gun locking sleeve center line and welding gun sleeve center line, the center line of the titanium window screw intersects and is perpendicular to the center line of the workpiece, and only the upper part of the welding area is connected to the external air. The special case is that the upper part of the welding area is connected to the external air through the gap between the welding gun, welding gun locking sleeve and welding gun sleeve, so that the gas containing oxygen (the mixed gas whose shielding gas ratio does not meet the requirements) can flow out.

[0023] The screw welding frame assembly consists of a window positioning block clamping screw, a shell positioning base, and a workpiece positioning frame. The workpiece positioning frame consists of two frames and a fixed beam. The two frames are respectively installed on both sides of the shell positioning base. The fixed beam is fixedly connected to the upper center of the two frames. The shell positioning base cooperates with the workpiece. The window positioning block clamping screw is threadedly connected to the fixed beam to fix the workpiece, the screw welding frame assembly, and the window positioning block assembly together.

[0024] The window positioning block clamping screw is provided with a clamping block, and the window positioning block clamping screw is threadedly connected with the clamping block.

[0025] A pressing surface is arranged on the window positioning block, and the lower plane of the pressing block contacts and fits with the pressing surface during pressing.

[0026] The present application also provides a protective sleeve, which is made of insulating non-metallic material. The inner diameter of the protective sleeve is consistent with the outer diameter of the titanium window screw. The protective sleeve is sleeved on the threaded part of the titanium window screw (in a special case, it just covers it).

[0027] The front part of the protective sleeve contacts the workpiece to ensure that the threaded parts of the two titanium window screws are highly consistent.

[0028] The locking sleeve boss, welding gun sleeve boss and welding gun sleeve groove are three evenly distributed in the circumferential direction and have roughly the same circumferential arc (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).

[0029] The housing positioning base described in the present application is made of metal, and a grounding wire is connected to the housing positioning base.

[0030] The welding gun locking sleeve and the welding gun sleeve described in the present application are circumferentially limited by a welding gun sleeve circumferential limit screw, and the welding gun sleeve circumferential limit screw is located below the edge of the locking sleeve boss and extends into the inner wall of the welding gun locking sleeve (it can block the rotation of the welding gun sleeve).

[0031] The shell positioning body described in the present application has two shielding gas channels facing two welding areas respectively, and the two shielding gas channels are connected to the shielding gas source through their own shielding gas inlet joint components and shielding gas switches respectively.

[0032] Compared with the prior art, the present application has the following advantages and effects: simple structure, easy use, low cost, good effect and wide application; accurate positioning of the screw welding position to ensure the accuracy of the assembly after welding and create good conditions for subsequent assembly; improved screw welding efficiency and reduced welding costs; and no reduction in the strength of the screw itself while ensuring welding strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1It is an exploded schematic diagram of an embodiment of the present application when the workpiece is a CT tube housing.

[0034] Figure 2 It is a schematic diagram of an explosion when the embodiment of the present application is applied to a workpiece that is a whole CT tube.

[0035] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the present application.

[0036] Figure 4 It is a three-dimensional schematic diagram of an embodiment of the present application. DETAILED DESCRIPTION

[0037] The present application is further described in detail below with reference to the accompanying drawings and examples. The following examples are explanations of the present application and the present application is not limited to the following examples. The front and back mentioned in the present application are relative to the direction of the welding gun. Figure 1 The bottom is the front and the top is the back.

[0038] See also Figure 1 to Figure 4 The welding gun 1 of this embodiment is the core operating component of welding. During welding, a certain pressure and compression amount need to be provided on the head to ensure the firmness of the welding.

[0039] 11- welding gun power line, connected to the welding gun 1 and the welding machine, used to provide the current required for welding.

[0040] 2- welding gun cover, a welding gun cover customized according to the welding requirements of the screw. The three threaded holes at the rear of the welding gun cover are used to fix the welding gun cover and the welding gun, and the three welding gun cover bosses 21 evenly distributed around the circumference are used to limit the axial position of the welding gun cover during welding (and provide the required pressure and compression at the same time). The welding gun cover boss 21 is in the shape of an arc surface connecting the plane. This structure can make the welding gun cover rotate smoothly to the working position and reduce the resistance during rotation.

[0041] 3- welding gun sleeve set screw, used to reliably fix the welding gun sleeve 2 and the welding gun 1 together.

[0042] 4- Window positioning block assembly, the window positioning block assembly is mainly composed of a welding gun locking sleeve 41, a window positioning block 42, a shielding gas inlet joint assembly 43, a shell positioning body 45 and a welding gun sleeve annular (circumferential) limit screw 44.

[0043] 45- Shell positioning body, two welding gun locking sleeves (cylindrical structure, front and rear openings) 41 are positioned and welded on the shell positioning body. There is a square hole in the middle of the shell positioning body for positioning and welding the window positioning block 42. The wider shell arc boss 451 at the lower part of the shell positioning body fits with the outer circle (shell) of the workpiece 6 near the window 61 of the workpiece 6, at least completely covering the two screw pits 62 to prevent air leakage in the lower part of the welding area.

[0044] 41- welding gun locking sleeve, the welding gun locking sleeve is welded with the housing positioning body 45, and its center is the center of the titanium window screw 5 after welding. There are three evenly distributed locking sleeve bosses 411 on the upper end of the welding gun locking sleeve, and the three locking sleeve bosses 411 correspond to the three welding gun sleeve bosses 21 on the welding gun sleeve 2 for axial limitation, ensuring the pressure and compression during welding. The three evenly distributed welding gun sleeve grooves 22 between the three welding gun sleeve bosses 21 cooperate with the locking sleeve boss 411, and the welding gun sleeve boss 21 is inserted into a welding gun locking sleeve 41 along the position of the welding gun locking sleeve inner hole (inner wall) 412 between two adjacent locking sleeve bosses 411, and then rotated to a position cooperating with the locking sleeve boss 411. At this time, the locking sleeve boss 411 blocks the welding gun sleeve boss 21 to limit the axial movement of the welding gun sleeve 2, and the welding gun sleeve annular limit screw 44 on the welding gun locking sleeve limits the welding gun sleeve 2 circumferentially (preventing the welding gun sleeve 2 from continuing to rotate in the original rotation direction, ensuring that it is circumferentially limited by only rotating approximately the arc of the welding gun sleeve boss 21), so that 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 cooperates with the outer circle of the welding gun sleeve boss 21 to ensure that the welding gun sleeve is concentric with it during welding. Since the titanium window screw 5 is concentric with the welding gun sleeve 2 during welding, this structure can ensure that the position of the titanium window screw 5 does not shift.

[0045] 42- window positioning block, the window positioning block is welded to the assembly through the square hole in the middle of the window positioning block assembly 4. The lower part of the window positioning block includes an arc boss (a boss with an arc surface on the lower surface), and the narrow window arc boss 422 is directly attached to the outer surface of the welded workpiece 6 window 61 to locate the height of the window positioning block assembly 4. The window arc boss 422 and the shell arc boss 451 constitute the arc boss of the present application, which is designed for positioning the entire tooling (the center position of the shell window is the center reference of the window positioning block). The window positioning block is provided with a pressing surface 421, which is fitted with the lower plane of the pressing block 75. When the window positioning block is tightened with the pressing screw 71, the pressing force is smoothly transmitted to the pressing surface 421 through the pressing block 75 to ensure the stability of the workpiece (ensuring that the window arc boss 422 and the shell arc boss 451 are always fitted with the workpiece window 61 and the outer circle of the workpiece near the window and are not loose), as well as the overall rigidity of the tooling and parts during welding. 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, 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 shell arc boss 451 is matched with the outer circle of the workpiece 6 and better prevent air leakage in the lower part of the welding area, the shell arc boss 451 of this embodiment can also be provided with a 0.2 mm thick silicone at least around the corresponding two screw pits 62.

[0046] 43-Shielding gas inlet joint assembly. The shielding gas inlet joint assembly is connected to a gas pipe with an outer diameter of 6 mm. Nitrogen enters the welding area through the gas pipe and the assembly to form a protective atmosphere to prevent oxidation of the welding area during welding.

[0047] 44- welding gun sleeve annular limit screw, the welding gun sleeve annular limit screw is screwed into the welding gun locking sleeve 41 through the threaded hole 413 in the middle of the welding gun locking sleeve 41, and is used for annular limit of the welding gun sleeve 2 during welding, so as to ensure that the welding gun sleeve 2 will not fall out of the welding gun locking sleeve 41 due to excessive rotation during use. Usually, the welding gun sleeve annular limit screw is located below the edge of the locking sleeve boss 411, ensuring that the welding gun sleeve boss 21 is limited when it rotates to below the locking sleeve boss 411.

[0048] 5-Titanium window screws, the screws to be welded are fixed to the head of the welding gun through a chuck. When in use, a protective sleeve 51 must be put on to ensure that the extended length of the titanium window screws is consistent (affecting the pressure and compression amount) and to prevent welding slag from splashing onto the threads of the titanium window screws during welding.

[0049] 51- Protective sleeve. The protective sleeve is made of insulating non-metallic material. The inner diameter is consistent with the outer diameter of the titanium window screw, and the length (height) is a fixed value. This part can ensure the consistency of the extended length of the titanium window screw (affecting the pressure and compression) and prevent welding slag from splashing onto the threads of the titanium window screw during welding.

[0050] 6- The processed part is a complete CT tube or a CT tube shell. The processed part of the present application can be a CT tube or a shell part of a CT tube, that is, the processed part can be a complete CT tube (including glass parts and shell) or a separate CT tube shell. The embodiment of the present application is applicable to both separate shells and shells installed on complete CT tubes. It can be applicable to the welding installation of separate shells and the maintenance of complete CT tubes. There are two screw pits 62 on both sides of the window 61 of the processed part, which are the welding positions of the processed part and the tail step of the titanium window screw 5. The two welding areas 5641 are located at the lower center of the space surrounded by the titanium window screw 5, the processed part 6, the window positioning block assembly 4, and the welding gun 1. Only the upper part of the welding area 5641 is used for gas outflow through the gap between the welding gun 1, the welding gun locking sleeve 41, and the welding gun sleeve 2 (not shown in the figure). Each welding area 5641 controls the air intake through the corresponding shielding gas inlet joint assembly 43 and has a corresponding shielding gas switch.

[0051] 7- Screw welding frame assembly, the screw welding frame assembly consists of a window positioning block clamping screw 71, a shell positioning base 72, a workpiece positioning frame 74, and a clamping block 75.

[0052] 71-Window positioning block clamping screw, the window positioning block clamping screw is used to clamp the tooling and the workpiece 6 as a whole during welding, so as to ensure that the arc below the window positioning block 42 fits the outer circle of the workpiece 6 during welding, and the overall rigidity of the tooling and parts during welding. As a special case, the head of the window positioning block clamping screw 71 ( Figure 3 The lower end) is provided with a clamping block 75 through a thread, which facilitates the adjustment of the clamping distance, and the clamping block 75 expands the clamping contact surface with the window positioning block 21, providing a more uniform and reliable clamping force.

[0053] 72- Shell positioning base, the upper surface of the shell positioning base is three V-shaped surfaces of different heights, which fit with different surfaces of the workpiece 6 during welding to ensure the stability and levelness of the workpiece 6 after placement, and the overall force of the workpiece 6 is uniform when the window positioning block clamping screw 71 is pressed down.

[0054] 74- The workpiece positioning frame is composed of two frames 741 and a fixed beam 742 connecting the two frames 741. The head of the window positioning block clamping screw 71 passes through the window positioning block clamping screw hole on the fixed beam 742 (not shown in the figure). When the window positioning block clamping screw 71 rotates downward, the lower plane of the clamping block 75 connected thereto presses the clamping surface 421 of the window positioning block.

[0055] 73- grounding wire, the grounding wire is connected to the housing positioning base 72 and is used to ground the tooling and parts during welding.

[0056] The working steps of this embodiment are as follows:

[0057] 1. Install the welding gun cover 2 on the welding gun 1 and firmly connect the two together with the welding gun cover set screw 3;

[0058] 2. Place the workpiece 6 on the housing positioning base 72, and ensure that the outer circles of the workpiece 6 are in good contact with the three V-shaped surfaces of the base;

[0059] 3. After confirming that the workpiece 6 is placed securely, the window arc boss 422 of the window positioning block assembly 4 is inserted (embedded) into the workpiece window 61, and the outer shell arc boss 451 is closely attached to the outer circle of the workpiece 6 near the workpiece window 61, completely covering the two screw pits 62;

[0060] 4. When the clamping screw 71 rotates downward, the lower plane of the clamping block 75 presses the clamping 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 fixed reliably and not loosened;

[0061] 5. After confirming that the welding gun power line 11 and the ground line 73 are properly connected, turn on the welding machine power;

[0062] 6. Install a titanium window screw 5 into the chuck of the welding gun 1 head. When installing, a protective sleeve 51 must be put on to prevent welding slag from splashing onto the screw surface during welding;

[0063] 7. Insert the welding gun cover 2 into a welding gun locking cover 41 and rotate it to the working angle (the locking cover boss 411 blocks the welding gun cover boss 21);

[0064] 8. Turn on the corresponding protective gas switch to allow nitrogen to pass through the corresponding protective gas inlet joint assembly 43 into the surroundings of the welding area corresponding to the titanium window screw 5;

[0065] 9. After confirming that the amount of nitrogen in the welding area is sufficient, press the switch on the welding gun 1 to complete the welding of the titanium window screw 5 and the workpiece 6 by energy storage welding (existing technology, in compliance with GB / T 902.3-2008 standard);

[0066] 10. Unscrew the welding gun sleeve 2 from the welding gun locking sleeve 41 at the welded part, take out the used protective sleeve 51 (reusable), and then repeat steps 6 to 10 (when performing steps 6 to 10 for the second time, the one mentioned here refers to another one) to complete the welding of another titanium window screw.

[0067] Of course, the order of some steps of the present application can be slightly changed without affecting the work. For example, the step of putting the protective sleeve 51 on the first titanium window screw 5 and then installing it into the head of the welding gun 1 can be completed before the seventh step, and the fifth step can be completed before the seventh step. These are all within the scope of expectation of ordinary technicians in this profession.

[0068] The mechanism of the present application, which is composed of a welding gun locking sleeve 41 and a welding gun sleeve 2, can provide stable welding pressure (the axial limit structure can ensure the constant compression of the gun head) when the welding gun sleeve rotates at a limited angle (when the circumferential arcs of the three welding gun sleeve bosses 21, the three welding gun sleeve grooves 22, and the three locking sleeve bosses 411 are all close to 60 degrees and slightly less than 60 degrees). The bonding strength between the titanium window screw and the shell is metallurgical bonding, and the workpiece does not deform or anneal after welding, and does not generate large-area high temperature, and does not reduce the strength of the titanium window screw itself. After welding, the tail end step of the titanium window screw is metallurgically bonded to the screw pit 62, and the titanium window screw is perpendicular to the outer circle of the workpiece (the center line of the titanium window screw intersects and is perpendicular to the center line of the workpiece). Due to the protection and limitation of the protective sleeve 51, there will be no welding residue on the entire threaded part and the height is consistent.

[0069] The gas microenvironment inert gas protection mechanism of the present application, which is composed of a protective gas inlet joint assembly 43, enables welding to be performed in air through an upper exhaust method.

[0070] Any simple deformation or combination of the technical features and technical solutions of this application should be considered to fall within the protection scope of this application.

Claims

1. A method for welding screws of titanium windows of CT tubes, characterized by: The CT tube titanium window screw welding equipment is used for welding. The CT tube titanium window screw welding equipment includes a welding gun sleeve, a window positioning block assembly, and a screw welding frame assembly. The welding gun sleeve is fixedly connected to the welding gun. The welding gun sleeve has two or more welding gun sleeve bosses evenly distributed around the circumference. The window positioning block assembly includes a welding gun locking sleeve, a window positioning block, a shielding gas inlet joint assembly, and a shell positioning body. Two welding gun locking sleeves and a window positioning block are installed on the shell positioning body. The window arc boss at the lower part of the window positioning block cooperates with the window of the workpiece, and the shell arc boss at the lower part of the shell positioning body cooperates with the outer circle of the workpiece. The workpiece is placed on the screw welding frame assembly, and the screw welding frame assembly positions the window The block assembly and the workpiece are fixed together, the welding gun locking sleeve cooperates with the welding gun sleeve, the welding gun sleeve boss cooperates with the locking sleeve boss, the welding gun sleeve groove between adjacent welding gun sleeve bosses cooperates with the locking sleeve boss, the welding gun locking sleeve inner hole cooperates with the welding gun sleeve boss outer circle, the window positioning block is installed in the center of the outer shell positioning body, the two welding areas of the window positioning block assembly are connected to the protective gas source through the protective gas inlet joint assembly and the protective gas switch, the center line of the titanium window screw coincides with the corresponding center line of the welding gun locking sleeve and the center line of the welding gun sleeve, the center line of the titanium window screw intersects and is perpendicular to the center line of the workpiece, and only the upper part of the welding area is connected to the external air; the CT tube titanium window screw welding method includes the following steps: S1 welding gun sleeve is installed on the welding gun; S2 The processed part is placed on the screw-welded frame assembly; The S3 window positioning block assembly is installed on the workpiece; S4 is fixed by a machined part, a screw-welded frame assembly, and a window positioning block assembly; S5 confirms that the welding gun power line and the ground line are connected, and turns on the welding machine power; S6 A titanium window screw is put into the protective sleeve and then installed into the chuck of the welding gun head, with the step at the tail end of the titanium window screw facing forward; Insert the S7 welding gun sleeve into a welding gun locking sleeve and rotate it to the working angle; S8 turns on the corresponding shielding gas switch, so that the shielding gas passes through the corresponding shielding gas inlet joint assembly into the surrounding area of ​​the lower part of the corresponding welding area; S9 presses the welding gun switch to complete the welding of the titanium window screw and the workpiece by energy storage welding; S10 unscrews the welding gun sleeve from the welding gun locking sleeve at the welded part, takes out the used protective sleeve, and then repeats steps S6 to S10 to complete the welding of another titanium window screw.

2. The method for welding screws for titanium windows of CT tubes according to claim 1 is characterized by: The window positioning block assembly is fitted with the outer circle of the workpiece through the arc boss to cover the two screw pits.

3. The method for welding screws for titanium windows of CT tubes according to claim 1 is characterized by: The workpiece, the screw-welded frame assembly and the window positioning block assembly are fixed and pressed by the window positioning block clamping screws.

4. A CT tube titanium window screw welding device, characterized by: It includes a welding gun cover, a window positioning block assembly, and a screw welding frame assembly. The welding gun cover is fixedly connected to the welding gun, and more than two welding gun cover bosses are evenly distributed around the welding gun cover. The window positioning block assembly includes a welding gun locking sleeve, a window positioning block, a shielding gas inlet joint assembly, and a shell positioning body. Two welding gun locking sleeves and a window positioning block are installed on the shell positioning body. The window arc boss at the lower part of the window positioning block cooperates with the window of the workpiece, and the shell arc boss at the lower part of the shell positioning body cooperates with the outer circle of the workpiece. The workpiece is placed on the screw welding frame assembly, and the screw welding frame assembly fixes the window positioning block assembly and the workpiece together. The welding gun locking sleeve and The welding gun cover cooperates, the welding gun cover boss cooperates with the locking sleeve boss, the welding gun cover groove between adjacent welding gun cover bosses cooperates with the locking sleeve boss, the inner hole of the welding gun locking sleeve cooperates with the outer circle of the welding gun cover boss, the window positioning block is installed in the center of the outer shell positioning body, and the two welding areas of the window positioning block assembly are connected to the shielding gas source through the shielding gas inlet joint assembly and the shielding gas switch. The tail end steps of the two titanium window screws are respectively installed in the screw pits on both sides of the window of the workpiece. The center line of the titanium window screw coincides with the corresponding center line of the welding gun locking sleeve and the center line of the welding gun cover. The center line of the titanium window screw intersects and is perpendicular to the center line of the workpiece, and only the upper part of the welding area is connected to the external air.

5. The CT tube titanium window screw welding equipment according to claim 4 is characterized in that: The screw welding frame assembly consists of a window positioning block clamping screw, a shell positioning base, and a workpiece positioning frame. The workpiece positioning frame consists of two frames and a fixed beam. The two frames are respectively installed on both sides of the shell positioning base. The fixed beam is fixedly connected to the upper center of the two frames. The shell positioning base cooperates with the workpiece. The window positioning block clamping screw is threadedly connected to the fixed beam to fix the workpiece, the screw welding frame assembly, and the window positioning block assembly together.

6. The CT tube titanium window screw welding equipment according to claim 4 is characterized in that: A protective sleeve is also provided. The protective sleeve is made of insulating non-metallic material. The inner diameter of the protective sleeve is consistent with the outer diameter of the titanium window screw. The protective sleeve is sleeved on the threaded part of the titanium window screw.

7. The CT tube titanium window screw welding equipment according to claim 6 is characterized by: The front part of the protective sleeve contacts the workpiece.

8. The CT tube titanium window screw welding equipment according to claim 5 is characterized by: The housing positioning base is made of metal, and a grounding wire is connected to the housing positioning base.

9. The CT tube titanium window screw welding equipment according to claim 4 is characterized by: The welding gun locking sleeve and the welding gun sleeve are circumferentially limited by a welding gun sleeve circumferential limiting screw, and the welding gun sleeve circumferential limiting screw is located below the edge of the locking sleeve boss and extends into the inner wall of the welding gun locking sleeve.

10. The CT tube titanium window screw welding equipment according to claim 5 is characterized by: The window positioning block clamping screw is provided with a clamping block, and the window positioning block clamping screw is threadedly connected with the clamping block.

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