CN115647508A - Universal tool for flat plate vacuum brazing - Google Patents
Universal tool for flat plate vacuum brazing Download PDFInfo
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- CN115647508A CN115647508A CN202211419050.4A CN202211419050A CN115647508A CN 115647508 A CN115647508 A CN 115647508A CN 202211419050 A CN202211419050 A CN 202211419050A CN 115647508 A CN115647508 A CN 115647508A
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- flat plate
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Abstract
The invention provides a universal tool for flat plate vacuum brazing, which comprises a bottom plate, an upright post, a cross beam, a pressure assembly, a pressure plate and a screw, wherein: the bottom plate is of a flat plate structure, a flat plate welding workpiece is placed on the bottom plate, and a pressing plate is placed on the flat plate welding workpiece; t-shaped groove guide rails are arranged on two sides of the bottom plate, T-shaped sliding blocks are arranged at the bottoms of the upright posts, and the upright posts are arranged in the T-shaped groove guide rails on the two sides of the bottom plate through the T-shaped sliding blocks; a row of light holes are arranged on the upright columns, and the cross beam is arranged between the upright columns at the two sides through screws; the crossbeam is provided with a row of threaded holes, and the pressure assembly is arranged between the crossbeam and the pressure plate through the threaded holes in the crossbeam. The invention has strong universality, can meet the requirements of flat welding workpieces with different sizes on different pressures, and has high heat transfer efficiency and convenient operation.
Description
Technical Field
The invention relates to the field of vacuum brazing tools, in particular to a universal tool for flat plate type vacuum brazing.
Background
Brazing refers to a welding mode that brazing filler metal lower than the melting point of a weldment and the weldment are heated to the temperature of the molten brazing filler metal at the same time, and then the liquid brazing filler metal is used for filling gaps of solid workpieces to enable metal connection. Vacuum brazing means that the whole brazing process is carried out in a vacuum equipment. Vacuum brazing is widely applied to air separation equipment, petrochemical equipment, engineering machinery and other aspects because of the advantages of smooth and good connectivity of a welding seam, high welding strength, good welding repeatability and the like.
During vacuum brazing, brazing seams exist between brazed plates, the melted liquid brazing filler metal wets the plates, concave liquid surfaces are formed in the brazing seams, additional pressure is formed at the concave liquid surfaces by the liquid surface tension, and the liquid brazing filler metal automatically flows in the brazing seams under the action of the additional pressure. The larger the brazing seam is, the smaller the additional pressure is, when the liquid additional pressure is smaller than the gravity of the liquid brazing filler metal, the liquid brazing filler metal cannot fill the brazing seam to form a non-brazing defect, and the non-brazing defect has adverse effects on the air tightness, the electromagnetic compatibility, the moisture resistance and the salt spray corrosion resistance of a product. Therefore, when the workpieces are brazed, certain pressure is applied to the brazed workpieces to reduce brazing seams.
Pressure is applied by pressing a weight on a brazed workpiece, but when the size of the brazed workpiece is large, the weight of the weight is too large, so that the base plate of the vacuum brazing machine is stressed too much to generate large deformation, the success rate of workpiece welding and the service life of the vacuum brazing machine are influenced, and the application range of the vacuum brazing machine is limited. The current vacuum brazing frock can not satisfy and be suitable for the flat plate brazing work piece of various sizes when providing certain pressure for the flat plate welding work piece, for example: a brazing clamp for a plate-fin heat exchanger (with the patent number of CN 108637421A) can provide certain pressure for welding a plate-fin structure, but the brazing clamp cannot meet the requirements of various workpieces with different sizes and is not universal. A clamping device for cold plate brazing (patent number: CN 2102544615U) ensures that the phenomenon of uneven welding seams of cold plates caused by inclination in the cold plate pressing process can not occur, but certain pressure can not be provided for welding parts.
Disclosure of Invention
The invention aims to provide a universal tool for flat plate vacuum brazing.
The technical solution for realizing the purpose of the invention is as follows: the utility model provides a general frock of dull and stereotyped class vacuum brazing which characterized in that, includes bottom plate, stand, crossbeam, pressure components, clamp plate, screw, wherein:
the bottom plate is of a flat plate structure, a flat plate welding workpiece is placed on the bottom plate, and a pressing plate is placed on the flat plate welding workpiece; t-shaped groove guide rails are arranged on two sides of the bottom plate, T-shaped sliding blocks are arranged at the bottoms of the upright columns, and the upright columns are arranged in the T-shaped groove guide rails on the two sides of the bottom plate through the T-shaped sliding blocks; the upright posts are provided with a row of light holes, and the cross beam is arranged between the upright posts at two sides through screws; the cross beam is provided with a row of threaded holes, and the pressure assembly is arranged between the cross beam and the pressure plate through the threaded holes in the cross beam.
Furthermore, the pressure assembly comprises a screw rod, a guide pin, a spring and a guide sleeve, wherein the screw rod is provided with threads and can be screwed into a threaded hole of the cross beam, the screw rod presses the guide pin, the guide pin presses the spring, and pressure generated after the spring is compressed sequentially acts on the guide sleeve, the pressing plate and the flat plate welding workpiece.
Further, the screw rod sets up circular cone boss, the pilot pin setting with this circular cone boss complex circular cone shrinkage pool, when the screw hole of the relative crossbeam of screw rod was rotatory, the relative circular cone shrinkage pool of circular cone boss was rotatory, the pilot pin irrotational, pilot pin axial motion compression spring.
Furthermore, the quantity and the position of the upright posts and the cross beams, and the quantity of the pressure components and the pressure plates are adjusted according to the size of the flat welding workpiece.
Furthermore, a row of light holes are formed in the upright column and used for adjusting the distance between the cross beam and the bottom plate.
Furthermore, a series of heat dissipation grooves are formed in the bottom plate.
Furthermore, the spring is made of nickel-cobalt alloy spring steel wires.
Furthermore, the pressing plate is a small cuboid metal plate.
A flat plate vacuum brazing method is based on the flat plate vacuum brazing universal tool to achieve flat plate vacuum brazing.
Compared with the prior art, the invention has the following remarkable advantages: 1) The universality is as follows: a row of light holes are arranged on the upright column and used for adjusting the distance between the cross beam and the bottom plate; a row of threaded holes are formed in the cross beam, and pressure components and pressure plates with different quantities can be loaded according to the size of a flat welding workpiece. The distance between the cross beam and the bottom plate is adjusted by adjusting the number and the positions of the stand columns and the cross beams, and pressure components with different numbers are loaded to match flat plate welding workpieces with different sizes. The compression amount of the spring is controlled by controlling the depth of the screw rod screwed into the cross beam, so that the pressure value applied to the flat welding workpiece is controlled, and the requirements of the flat welding workpiece on different pressures are matched. 2) The heat transfer efficiency is high: the bottom plate is provided with a series of heat conducting grooves which are beneficial to heat transfer between a flat welding workpiece and the vacuum brazing machine. 3) The operation is convenient: during brazing, a flat welding workpiece is placed on the bottom plate, the pressing plate is placed on the flat welding workpiece, the screw is screwed in, and pressure is applied.
Drawings
FIG. 1 is a schematic view of a general vacuum brazing tool for flat plates;
FIG. 2 is a schematic view of a base plate;
FIG. 3 is a schematic view of a column;
FIG. 4 is a schematic view of a beam;
FIG. 5 is a cross-sectional view of the pressure assembly;
FIG. 6 is a schematic view of a screw;
fig. 7 is a schematic view of the guide pin.
Wherein:
1-bottom plate, 1-1-T-shaped groove guide rail, 1-2-heat conducting groove,
2-upright post, 2-1-T-shaped slide block, 2-2-unthreaded hole,
3-beam, 3-1-threaded hole,
4-pressure component, 4-1-screw, 4-1-1-conical boss, 4-1-2-screw thread, 4-2-guide pin, 4-2-1-conical concave hole, 4-3-spring, 4-4-guide sleeve,
5-pressing plate, 6-flat welding workpiece and 7-screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The invention relates to a universal tool for flat plate vacuum brazing, which consists of a bottom plate 1, an upright post 2, a cross beam 3, a pressure assembly 4, a pressure plate 5 and screws 7.
As shown in fig. 1, 2, 3, and 4, the bottom plate 1 is a flat plate structure and is a base of a universal tool for flat plate brazing, a flat plate welding workpiece 6 is placed on the bottom plate 1, and a pressing plate 5 is placed on the flat plate welding workpiece 6.
The two sides of the bottom plate 1 are provided with T-shaped groove guide rails 1-1, the bottom of the upright post 2 is provided with a T-shaped sliding block 2-1, the upright post 2 is arranged in the T-shaped groove guide rails 1-1 on the two sides of the bottom plate 1 through the T-shaped sliding block 2-1, the upright post 2 can move and adjust the position on the bottom plate 1 along the T-shaped groove guide rails 1-1 through the T-shaped sliding block 2-1, and the bottom plate 1 can be provided with different numbers of upright posts 2 according to the size of a flat welding workpiece 6.
The cross beam 3 is arranged between the upright posts 2 at the two sides through screws 7, a row of threaded holes 3-1 are formed in the cross beam 3, and the pressure component 4 is arranged between the cross beam 3 and the pressure plate 5 through the threaded holes 3-1 in the cross beam 3. A row of light holes 2-2 are arranged on the upright post 2 and used for adjusting the distance between the cross beam 3 and the bottom plate 1; a row of threaded holes 3-1 are formed in the cross beam 3, and different numbers of pressure components 4 and pressure plates 5 can be arranged according to the size of a flat welding workpiece 6. The distance between the cross beam 3 and the bottom plate 1 is adjusted by adjusting the quantity and the position of the upright posts 2 and the cross beam 3, and the pressure components 4 with different quantities are loaded to match the flat welding workpieces 6 with different sizes, so that the universality requirement is met.
As shown in FIG. 5, the pressure assembly 4 comprises a screw 4-1, a guide pin 4-2, a spring 4-3 and a guide sleeve 4-4. The screw 4-1 is provided with a thread 4-1-2 which can be screwed into a threaded hole 3-1 of the beam 3, the screw 4-1 presses the guide pin 4-2, the guide pin 4-2 presses the spring 4-3, and the pressure generated after the spring 4-3 is compressed acts on the guide sleeve 4-4, the pressing plate 5 and the flat plate welding workpiece 6 in sequence.
As shown in fig. 5, 6 and 7, the screw rod 4-1 is provided with a conical boss 4-1-1, and the guide pin 4-2 is provided with a conical concave hole 4-2-1 matched with the conical boss 4-1-1; when the screw rod 4-1 rotates relative to the threaded hole 3-1 of the cross beam 3, the conical boss 4-1-1 rotates relative to the conical concave hole 4-2-1, the guide pin 4-2 does not rotate, the guide pin 4-2 axially moves to compress the spring 4-3, and the guide pin 4-2 is prevented from rotating relative to the spring 4-3 to damage the spring 4-3.
As shown in fig. 5, the spring 4-3 is made of a nickel-cobalt alloy spring steel wire, and has high strength in a high-temperature environment and is not easy to deform in a long-term high-temperature environment.
As shown in fig. 2, the base plate 1 is provided with a series of heat-conducting grooves 1-2 for facilitating heat transfer between the flat-plate welding workpiece 6 and the vacuum brazing machine.
As shown in fig. 1, the pressing plate 5 is a small rectangular metal plate, the number of the pressing plates 5 can be adjusted according to the size of the flat welding workpiece 6, and meanwhile, the size of the pressing plate 5 is small, so that the flatness of the pressing plate 5 can be better ensured, and the pressing plate 5 and the flat welding workpiece 6 are completely attached.
As shown in figure 1, the compression amount of the spring 4-3 is controlled by controlling the depth of the screw rod 4-1 screwed into the cross beam 3, so that the pressure value applied to the flat welding workpiece 6 is controlled, and the requirements of the flat welding workpiece 6 on different pressures are matched. The pressure on the flat welding workpiece 6 is as follows:
wherein P is the pressure to which the flat welded workpiece 6 is subjected, and N 1 Number of pressure assemblies 4, N 2 Number of pressing plates 5, N 3 The number of the springs 4-3, M is the mass of the pressure assembly 4, M is the mass of the pressure plate 5, g is the gravity coefficient, k is the elastic coefficient of the springs 4-3, deltax is the compression amount of the springs 4-3, and A is the contact area of all the pressure plates (5) and the flat plate welding workpiece 6.
Before welding, the quantity of the upright posts 2, the cross beams 3, the pressure components 4 and the pressure plates 5 is determined according to the size of a flat plate welding workpiece 6, and A, N is determined according to the quantity 1 、N 2 、N 3 M, M, g and k are constants, and the compression amount of the spring is calculated according to the pressure P to be loaded on the flat welding workpiece 6
In conclusion, the pressure of the weight on the flat brazing workpiece is converted into the internal stress of the tool, when the flat brazing workpiece is brazed, the weight of the flat brazing workpiece and the weight of the tool are only required to be borne, the weight of the tool is far smaller than that of the weight, the stress of the bottom plate of the vacuum brazing machine is greatly reduced, the deformation of the bottom plate of the vacuum brazing machine is reduced, the success rate of the flat brazing workpiece is improved, the service life of the vacuum brazing machine is prolonged, and the application range of the vacuum brazing machine is enlarged.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (9)
1. The utility model provides a general frock of dull and stereotyped class vacuum brazing which characterized in that, includes bottom plate (1), stand (2), crossbeam (3), pressure components (4), clamp plate (5), screw (7), wherein:
the bottom plate (1) is of a flat plate structure, a flat plate welding workpiece (6) is placed on the bottom plate (1), and a pressing plate (5) is placed on the flat plate welding workpiece (6); t-shaped groove guide rails (1-1) are arranged on two sides of the bottom plate (1), T-shaped sliding blocks (2-1) are arranged at the bottoms of the upright posts (2), and the upright posts (2) are arranged in the T-shaped groove guide rails (1-1) on two sides of the bottom plate (1) through the T-shaped sliding blocks (2-1); a row of unthreaded holes (2-2) are formed in the upright columns (2), and the cross beam (3) is arranged between the upright columns (2) on the two sides through screws (7); a row of threaded holes (3-1) are formed in the cross beam (3), and the pressure assembly (4) is installed between the cross beam (3) and the pressure plate (5) through the threaded holes (3-1) in the cross beam (3).
2. The universal tool for flat plate vacuum brazing according to claim 1, wherein the pressure assembly (4) comprises a screw (4-1), a guide pin (4-2), a spring (4-3) and a guide sleeve (4-4), the screw (4-1) is provided with a thread (4-1-2), the thread can be screwed into a threaded hole (3-1) of the cross beam (3), the screw (4-1) presses the guide pin (4-2), the guide pin (4-2) presses the spring (4-3), and pressure generated after the spring (4-3) is compressed sequentially acts on the guide sleeve (4-4), the pressing plate (5) and the flat plate welding workpiece (6).
3. The universal fixture for flat plate vacuum brazing according to claim 2, wherein the screw (4-1) is provided with a conical boss (4-1-1), the guide pin (4-2) is provided with a conical concave hole (4-2-1) matched with the conical boss (4-1-1), when the screw (4-1) rotates relative to the threaded hole (3-1) of the cross beam (3), the conical boss (4-1-1) rotates relative to the conical concave hole (4-2-1), the guide pin (4-2) does not rotate, and the guide pin (4-2) axially moves to compress the spring (4-3).
4. The universal fixture for flat plate type vacuum brazing according to claim 1, wherein the number and the positions of the columns (2) and the beams (3) and the number of the pressure assemblies (4) and the pressure plates (5) are adjusted according to the size of the flat plate welding workpiece (6).
5. The universal fixture for flat plate vacuum brazing according to claim 1 or 4, wherein a row of light holes (2-2) are formed in the upright post (2) and used for adjusting the distance between the cross beam (3) and the bottom plate (1).
6. The universal fixture for flat plate type vacuum brazing according to claim 1, wherein a series of heat dissipation grooves (1-2) are formed in the bottom plate (1).
7. The universal fixture for flat plate type vacuum brazing according to claim 1, wherein the spring (4-3) is made of nickel-cobalt alloy spring steel wire.
8. The universal fixture for flat plate vacuum brazing according to claim 1, wherein the pressure plate (5) is a small rectangular metal plate.
9. A flat plate vacuum brazing method is characterized in that flat plate vacuum brazing is achieved based on the flat plate vacuum brazing universal tool set forth in any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211419050.4A CN115647508A (en) | 2022-11-14 | 2022-11-14 | Universal tool for flat plate vacuum brazing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211419050.4A CN115647508A (en) | 2022-11-14 | 2022-11-14 | Universal tool for flat plate vacuum brazing |
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| Publication Number | Publication Date |
|---|---|
| CN115647508A true CN115647508A (en) | 2023-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211419050.4A Pending CN115647508A (en) | 2022-11-14 | 2022-11-14 | Universal tool for flat plate vacuum brazing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116252019A (en) * | 2023-04-18 | 2023-06-13 | 广东森铝科技有限公司 | Clamp for brazing aluminum honeycomb plate for ship and brazing process |
-
2022
- 2022-11-14 CN CN202211419050.4A patent/CN115647508A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116252019A (en) * | 2023-04-18 | 2023-06-13 | 广东森铝科技有限公司 | Clamp for brazing aluminum honeycomb plate for ship and brazing process |
| CN116252019B (en) * | 2023-04-18 | 2023-09-15 | 广东森铝科技有限公司 | Clamp for brazing aluminum honeycomb plate for ship and brazing process |
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