Hot melting forming assembly and hot melting forming device for X-ray tube filament

Abstract

The utility model belongs to the technical field of hot melting welding, and particularly relates to a hot melting forming assembly and a hot melting forming device for an X-ray tube filament, which comprise a welding unit and a discharging unit, the welding unit comprises a first driving motor, a sliding guide rail and a welding head; the output end of the first driving motor is connected with a welding head which is slidably arranged on the sliding guide rail. The discharging unit comprises a base, a material frame mold and a feeding air cylinder set. The material frame mold is arranged at the output end of the feeding air cylinder set, and the feeding air cylinder set is arranged on the base. The material frame mold is used for loading the tungsten filament and the hot melting welding material, and the welding head faces the material frame mold. Compared with the prior art, the welding device solves the problem that in the prior art, a welding device is not suitable for hot melting welding of the X-ray tube filament, and the scheme achieves hot melting welding of the tungsten filament in the X-ray tube.

Description

Technical Field

[0001] This utility model belongs to the field of hot melt welding technology, specifically relating to a hot melt forming component and hot melt forming device for X-ray tube filaments. Background Technology

[0002] X-ray technology plays a vital role in modern medicine, industrial inspection, and other fields, and the X-ray filament and its accessories (X-ray tube) are the key components that generate X-rays.

[0003] X-ray machines utilize the X-rays they produce, which can penetrate human tissue. Because different tissues absorb X-rays to varying degrees, they create images of different grayscale levels on film or digital detectors. This allows doctors to observe internal structures such as bones and organs, enabling accurate diagnoses of fractures, lung diseases, digestive system disorders, and more.

[0004] In some minimally invasive surgeries, X-ray equipment can monitor the position of surgical instruments and the operation process in real time. High-quality X-rays can provide clear images, helping doctors accurately place catheters, stents, and other instruments to the lesion site, reducing surgical risks and complications.

[0005] In manufacturing, X-rays are widely used for product quality inspection. X-rays can penetrate various materials to detect internal defects in products, such as pores, cracks, and inclusions. This helps improve product quality, reduce scrap rates, and ensure product safety and reliability.

[0006] In public places such as airports, train stations, and subway stations, X-ray security screening equipment uses X-rays to scan luggage. It can detect prohibited items such as knives, firearms, and explosives, ensuring public safety.

[0007] X-ray security inspection equipment can quickly and accurately identify items in luggage, improve security inspection efficiency, and reduce the workload and errors of manual inspection.

[0008] X-ray filaments and related components commonly use wire melting methods: depending on the different melting welding processes, they can be divided into resistance melting welding, flash welding, high-frequency melting welding, etc.

[0009] 1) Resistance hot melt welding: The hot melt welding process first applies upsetting pressure (10-15MPa) to make the joint of the workpieces in close contact, then heats it to a hot melt state, then applies pressure (30-50MPa) to both ends, and then controls the welding time to make the contact area of ​​the workpieces plastically deform under pressure to achieve welding.

[0010] Resistance welding is simple to operate, but it requires high precision in the machining and cleaning of the workpiece end faces. Otherwise, uneven heating of the contact surface can occur, resulting in defects such as oxide inclusions and incomplete penetration, affecting the welding quality. Therefore, resistance welding is generally only used for welding workpieces with a diameter of less than 20mm, simple cross-sections, and low stress.

[0011] 2) Flash welding: The welding process involves first applying electricity, then bringing the two workpieces into slight contact. Due to the uneven surfaces of the workpieces, the current density passing through the contact point is very high, causing the metal to rapidly melt, vaporize, and explode, sputtering sparks and creating a flash phenomenon. Continuing to move the workpieces creates new contact points, and the flash phenomenon continues. Once both workpiece ends are completely melted, pressure is rapidly applied, then the power is cut off, and pressure is applied again to weld the workpieces together.

[0012] 3) High-frequency thermofusion welding: Currently, high-frequency thermofusion welding is a complex process. It typically involves first heating the material at high frequency to melt it, then bringing the two ends of the workpiece into close contact under pressure (40–80 MPa). In this thermofusion state, the contact area undergoes plastic deformation under pressure, resulting in a weld. However, its drawbacks include the difficulty in controlling the weld point, poor weld consistency, and the direct relationship between the weld and the material's thermal conductivity and the thermofusion temperature.

[0013] Therefore, there is a need for a device suitable for the thermofusion welding of filaments in X-ray tubes. Utility Model Content

[0014] The purpose of this utility model is to provide a thermomelting forming assembly and thermomelting forming device for X-ray tube filaments in order to solve at least one of the above problems, so as to solve the problem that the welding device in the prior art is not suitable for thermomelting welding of X-ray tube filaments. This solution realizes thermomelting welding of tungsten filaments in X-ray tubes.

[0015] The objective of this utility model is achieved through the following technical solution:

[0016] The first aspect of this utility model discloses a hot melt forming assembly for X-ray tube filaments, including a welding unit and a material feeding unit;

[0017] The welding unit includes a first drive motor, a sliding guide rail, and a welding head; the output end of the first drive motor is connected to the welding head, and the welding head is slidably mounted on the sliding guide rail.

[0018] The material discharge unit includes a base, a material rack mold, and a feeding cylinder assembly; the material rack mold is located at the output end of the feeding cylinder assembly, and the feeding cylinder assembly is located on the base;

[0019] The material rack mold is used to limit the tungsten filament and the hot melt welding material, and the welding head is set towards the material rack mold.

[0020] Preferably, the sliding guide rail is arranged parallel to the base, and the material rack mold is provided at intervals.

[0021] Preferably, the welding head includes a second drive motor, a fixed platform, a sliding platform, a clamping cylinder, and welding clamps;

[0022] The fixed platform is slidably mounted on the sliding guide rail;

[0023] The output end of the second drive motor is connected to the sliding platform, which is slidably mounted on the fixed platform.

[0024] The clamp cylinder is mounted on a sliding platform, and the welding clamp is mounted at the output end of the clamp cylinder.

[0025] Preferably, the sliding platform is provided with a slide bar, and the bottom of the welding clamp is provided with a slide groove that slides in cooperation with the slide bar.

[0026] Preferably, the slide bar is provided with a limit block or a limit spring on the inner side of the welding clamp to limit the minimum distance of the clamping distance of the welding clamp.

[0027] Preferably, the second drive motor is arranged perpendicular to the first drive motor.

[0028] Preferably, the feeding cylinder assembly includes a pushing cylinder and a positioning cylinder;

[0029] The push cylinder is mounted on the base, and the material rack mold is mounted on the output end of the push cylinder. The output direction of the push cylinder is parallel to the sliding guide rail.

[0030] The positioning cylinder is mounted on the base and faces the material rack mold. The positioning cylinder is used to position the material rack mold after it is pushed to the target position.

[0031] Preferably, the base is provided with a slide rail, and the material rack mold is provided with a groove that slides and engages with the slide rail.

[0032] Preferably, the first drive motor is a servo motor.

[0033] The second aspect of this utility model discloses a hot melt forming apparatus, including a hot melt forming component for X-ray tube filament as described above, and a hot melt welding chamber.

[0034] The hot melt welding chamber is provided with a sealed cavity, and the hot melt forming component is disposed inside the sealed cavity.

[0035] The working principle of this utility model is as follows:

[0036] The feeding unit uses a feeding cylinder assembly to deliver the material rack mold containing tungsten filaments and hot melt welding materials to the target position. Then, the welding unit uses the first drive motor to drive the welding head to move to the target position and begin welding.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] With the movable welding head and material rack mold in the feeding unit and welding unit, the welding position can be matched and adjusted more accurately. Moreover, the sliding guide rail is parallel to the base and multiple material rack molds are set at intervals. Therefore, the effect of single feeding and multiple welding can be achieved by sliding the welding head, avoiding the problems of low efficiency and high consumption caused by repeatedly forming and releasing the protective atmosphere environment (hot melt welding needs to be carried out in a protective atmosphere).

[0039] By setting a limiting block or limiting spring between the welding clamps on both sides to limit the minimum distance, the size of the weld point can be controlled, thus ensuring that the weld point is free of burrs and oxidation after welding. Attached Figure Description

[0040] Figure 1 This is a top view of the thermoforming component.

[0041] Figure 2 This is a schematic diagram of the axial structure of a thermoforming component;

[0042] In the diagram: 1-Welding unit; 2-Material feeding unit; 3-Tungsten filament; 4-Hot melt welding material; 11-First drive motor; 12-Sliding guide rail; 13-Welding head; 21-Base; 22-Material rack mold; 131-Second drive motor; 132-Fixed platform; 133-Sliding platform; 134-Welding clamp; 135-Slide bar. Detailed Implementation

[0043] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0044] Any matters not covered below can be addressed using existing technologies.

[0045] Example

[0046] A thermoforming assembly for X-ray tube filaments, such as Figure 1 , 2 As shown, it includes welding unit 1 and material feeding unit 2;

[0047] The welding unit 1 includes a first drive motor 11, a sliding guide rail 12, and a welding head 13; the output end of the first drive motor 11 is connected to the welding head 13, and the welding head 13 is slidably disposed on the sliding guide rail 12.

[0048] The material discharge unit 2 includes a base 21, a material rack mold 22, and a feeding cylinder assembly; the material rack mold 22 is located at the output end of the feeding cylinder assembly, and the feeding cylinder assembly is located on the base 21.

[0049] The material rack mold 22 is used to limit the tungsten filament 3 and the hot melt welding material 4, and the welding head 13 is arranged facing the material rack mold 22.

[0050] More specifically, in this embodiment:

[0051] The hot melt forming assembly includes a welding unit 1 and a material discharge unit 2, which are arranged in a parallel manner.

[0052] Welding unit 1 includes a first drive motor 11, a sliding guide rail 12, and a welding head 13. The welding head 13 specifically includes a second drive motor 131, a fixed platform 132, a sliding platform 133, a clamping cylinder, and a welding clamp 134. The fixed platform 132 is slidably mounted on the sliding guide rail 12 and is connected to the output end of the first drive motor 11. The first drive motor 11 drives the fixed platform 132 to slide along the sliding guide rail 12. The sliding platform 133 is slidably mounted on the fixed platform 132 (the sliding direction of the sliding platform 133 on the fixed platform 132 is perpendicular to the sliding direction of the fixed platform 132 on the sliding guide rail 12), and the sliding platform 133 is connected to the output end of the second drive motor 131 (the second drive motor 131 is connected via a motor mount). (Assembled on the fixed platform 132), and then the second drive motor 131 drives the sliding platform 133 to slide on the fixed platform 132; the clamp cylinder is mounted on the sliding platform 133 through the cylinder seat, and the welding clamp 134 is connected to the output end of the clamp cylinder. The clamp cylinder and the welding clamp 134 are each provided in a pair and are symmetrically arranged. Then, the clamp cylinder can drive the two welding clamps 134 to clamp and release (the tungsten filament 3 placed therein is pressure welded to the hot melt welding material 4 through the welding clamp 134, and the welding clamp 134 is made of tungsten copper alloy). On the sliding platform 133, a slide bar 135 is arranged parallel to the sliding guide rail 12. Correspondingly, a sliding groove is provided at the bottom of the welding clamp 134 to slide and engage with the slide bar 135. Furthermore, a limit block or limit spring is provided at the middle position of the slide bar 135, between the two clamp cylinders, to limit the minimum distance between the welding clamps 134, preventing damage to the tungsten filament 3 and the hot melt welding material 4, while also controlling the size of the weld point during welding, ensuring that the weld point is burr-free and oxidation-free. Both the first drive motor 11 and the second drive motor 131 are servo motors to achieve precise adjustment of the moving distance of the fixed platform 132 and the sliding platform 133, respectively.

[0053] The material feeding unit 2 comprises a base 21, a material rack mold 22, and a feeding cylinder assembly. The material rack mold 22 is used to load tungsten filaments 3 and hot melt welding materials 4. The feeding cylinder assembly is further composed of a pushing cylinder and a positioning cylinder. The base 21 is arranged parallel to the sliding rail, and the material rack molds 22 are spaced apart along the length of the base 21. The welding clamps 134 at the end of the welding head 13 are also positioned towards the material rack molds 22, and the welding clamps 134 can move closer to or away from the welding head 134. Thus, by sliding the welding head 13 on the sliding guide rail 12 through the first drive motor 11, hot melt welding can be performed on the tungsten filaments 3 and hot melt welding materials 4 on each material rack mold 22 after a single feeding in the material feeding unit 2. The material rack mold 22 specifically includes a support frame and a limiting groove (the specific structure of the material rack mold 22 is not shown in the figure), extending upward from the inside of the base 21 to the front end of the welding clamp 134, used for loading and limiting the tungsten filament 3 and the hot melt welding material 4, respectively, with the tungsten filament 3 located above the hot melt welding material 4. The loading cylinder assembly specifically includes a pushing cylinder and a positioning cylinder (the specific structure of the loading cylinder assembly is not shown in the figure), both assembled inside the base 21; wherein: the output direction of the pushing cylinder is consistent with the extension direction of the base 21, and the material rack mold 22 is connected to the output end of the pushing cylinder, thereby the pushing cylinder loads / unloads the material rack mold 22 (with the tungsten filament 3 and the hot melt welding material 4 on it); the positioning cylinder is set on the inner side wall of the base 21 and is set according to the setting position of the material rack mold 22, so that the material rack mold 22 is positioned after being transported to the target position by the pushing cylinder, further avoiding displacement during the hot melt welding process, which could lead to poor welding effect. To further facilitate the pushing of the material rack mold 22 in the base 21, a slide rail is provided in the base 21, and the material rack mold 22 is provided with a groove that slides and engages with the slide rail. At the same time, to facilitate the overall pushing of the material rack mold 22, the material rack molds 22 can be connected in series and moved in an integrated manner by connecting rods or connecting blocks. In addition, a long slide rail can be provided on the top surface of the base 21 for the material rack mold 22 to extend and slide. The material rack mold 22 can be further designed with a slider or groove that matches the slide rail to improve the sliding effect.

[0054] The aforementioned hot melt welding material 4 can be made of metal rods, wires, or sheets such as molybdenum, niobium, or stainless steel; the diameter of the applicable tungsten filament 3 is between 0.06 and 0.22 mm, and the diameter of the applicable hot melt welding material 4 is between 0.5 and 1.8 mm.

[0055] The thermoforming assembly is used in a thermoforming apparatus, which also includes a thermoforming welding chamber, inside which the thermoforming assembly is assembled. The thermoforming welding chamber contains a sealed cavity, within which the thermoforming assembly is located. During thermoforming welding, the sealed cavity is filled with a protective gas, and welding is performed under a protective atmosphere to prevent welding oxidation.

[0056] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A thermoforming assembly for X-ray tube filaments, characterized in that, It includes a welding unit (1) and a material feeding unit (2); The welding unit (1) includes a first drive motor (11), a sliding guide rail (12) and a welding head (13); the output end of the first drive motor (11) is connected to the welding head (13), and the welding head (13) is slidably disposed on the sliding guide rail (12); The material discharge unit (2) includes a base (21), a material rack mold (22), and a feeding cylinder assembly; the material rack mold (22) is located at the output end of the feeding cylinder assembly, and the feeding cylinder assembly is located on the base (21); The material rack mold (22) is used to load tungsten filament (3) and hot melt welding material (4), and the welding head (13) is positioned facing the material rack mold (22).

2. The thermoforming assembly for an X-ray tube filament according to claim 1, characterized in that, The sliding guide rail (12) is arranged parallel to the base (21), and several material rack molds (22) are arranged at intervals.

3. The thermoforming assembly for X-ray tube filaments according to claim 1, characterized in that, The welding head (13) includes a second drive motor (131), a fixed platform (132), a sliding platform (133), a clamp cylinder, and a welding clamp (134); The fixed platform (132) is slidably mounted on the sliding guide rail (12); The output end of the second drive motor (131) is connected to the sliding platform (133), which is slidably mounted on the fixed platform (132). The clamp cylinder is mounted on the sliding platform (133), and the welding clamp (134) is mounted on the output end of the clamp cylinder.

4. A thermoforming assembly for X-ray tube filaments according to claim 3, characterized in that, The sliding platform (133) is provided with a slide bar (135), and the bottom of the welding clamp (134) is provided with a sliding groove that slides and engages with the slide bar (135).

5. A thermoforming assembly for an X-ray tube filament according to claim 4, characterized in that, The slide bar (135) is provided with a limit block or a limit spring on the inner side of the welding clamp (134) to limit the minimum distance of the clamping distance of the welding clamp (134).

6. A thermoforming assembly for an X-ray tube filament according to claim 3, characterized in that, The second drive motor (131) is arranged perpendicularly to the first drive motor (11).

7. A thermoforming assembly for X-ray tube filaments according to claim 1, characterized in that, The feeding cylinder assembly includes a pushing cylinder and a positioning cylinder; The push cylinder is mounted on the base (21), and the material rack mold (22) is mounted on the output end of the push cylinder. The output direction of the push cylinder is parallel to the sliding guide rail (12). The positioning cylinder is mounted on the base (21) and faces the material rack mold (22). The positioning cylinder is used to position the material rack mold (22) after it is pushed to the target position.

8. A thermoforming assembly for an X-ray tube filament according to claim 1, characterized in that, The base (21) is provided with a slide rail, and the material rack mold (22) is provided with a groove that slides with the slide rail.

9. A thermoforming assembly for an X-ray tube filament according to claim 1, characterized in that, The first drive motor (11) is a servo motor.

10. A hot melt forming apparatus, characterized in that, Includes the thermoforming assembly for X-ray tube filaments as described in any one of claims 1 to 9, and further includes a thermoforming welding chamber; The hot melt welding chamber is provided with a sealed cavity, and the hot melt forming component is disposed inside the sealed cavity.

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