CN219724874U

CN219724874U - Radiator brazing clamp

Info

Publication number: CN219724874U
Application number: CN202222852972.6U
Authority: CN
Inventors: 黄凯; 张清云; 李耀民; 朱方国
Original assignee: Shanghai National Defense Technology Development Corp
Current assignee: Shanghai National Defense Technology Development Corp
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-09-22
Anticipated expiration: 2032-10-27

Abstract

The utility model relates to the technical field of clamps and discloses a radiator brazing clamp which comprises a plurality of support plates arranged at intervals, wherein support blocks for supporting weldments are integrally formed at two ends of any support plate, and connecting angle steel with a plurality of openings oppositely arranged is arranged in the support plate in a penetrating manner. The utility model has the effects of reducing the occurrence of the condition that the brazing clamp is propped against a weldment and improving the brazing precision by using the brazing clamp.

Description

Radiator brazing clamp

Technical Field

The utility model relates to the technical field of clamps, in particular to a radiator brazing clamp.

Background

The brazing is a welding method in which after a brazing filler metal lower than the melting point of a weldment and the weldment are heated to the melting temperature of the brazing filler metal, a gap of a solid workpiece is filled with a liquid brazing filler metal to connect metals together, and the brazing deformation is small, so that the joint is smooth and attractive, and the brazing method is widely applied to various welding components.

In the related art, the brazing fixture comprises a plurality of supporting plates, wherein limit rods are arranged at two ends of each supporting plate, angle steel is connected between the supporting plates, the angle steel is concavely arranged in a direction away from the weldment, limit angle steel is arranged at two ends of each angle steel, before brazing operation, the surface of the weldment to be welded of the radiator is cleaned up, the weldment is placed on the brazing fixture, brazing filler metal is placed between joint gaps which need to be welded, after the weldment and the brazing filler metal are heated to be slightly higher than the melting point temperature of the brazing filler metal, brazing of the weldment is achieved, the weldment is cooled, and the weldment is taken down on the brazing fixture, so that brazing work of the weldment is completed.

In view of the above related art, the inventor believes that, in the use process of the existing brazing clamp, the supporting plate and the angle steel are expanded due to heating, but are limited by the limiting rod and the limiting angle steel at the end, so that the internal stress of the supporting plate and the angle steel cannot be released, the supporting plate and the angle steel are arched upwards, the supporting plate is propped against the radiator, the brazing size of the radiator is deviated, and the problem to be improved exists.

Disclosure of Invention

In order to reduce the occurrence of the situation that the brazing clamp is propped against a weldment and improve the brazing accuracy of the brazing clamp, the utility model provides the radiator brazing clamp.

The utility model provides a radiator brazing clamp, which adopts the following technical scheme:

the utility model provides a radiator anchor clamps that braze welding, is provided with a plurality of backup pads including the interval, arbitrary the equal integrated into one piece in both ends of backup pad has the supporting shoe that is used for supporting the weldment, run through in the backup pad and be provided with the connecting angle steel that a plurality of openings set up relatively.

Through adopting the technical scheme, the connecting angle steel with the openings arranged oppositely is arranged in the supporting plate, in actual work, a worker places the weldment on the supporting block on the supporting plate, the brazing filler metal is added near the position to be welded, and finally the brazing clamp and the weldment are placed in a high-temperature environment together, when the melting point of the brazing filler metal is reached, the brazing filler metal welds the position to be welded of the weldment, so that the brazing operation of the weldment is completed; because two angle steel openings are relatively arranged, horizontal stress is generated to the two ends of the supporting plate when the angle steel is heated, and then the supporting plate extends to the two ends of the length direction of the supporting plate under the action of the angle steel, and upward protruding stress is not easy to generate, so that the situation that the brazing clamp is propped up against a weldment is reduced, and the brazing precision of the brazing clamp is improved.

Preferably, a plurality of deformation holes for reducing expansion deformation of the support plate are formed in the support plate in a penetrating manner in the thickness direction of the support plate.

Through adopting above-mentioned technical scheme, when adopting the deformation hole to make the backup pad be heated and take place the inflation, thereby through the deformation volume that has reduced the backup pad with the stress effect deformation hole, avoid the backup pad top to touch the weldment, improved and used the brazed precision of brazing anchor clamps.

Preferably, both ends of the supporting plate are integrally fixed with limiting blocks for limiting the position of the weldment.

Through adopting above-mentioned technical scheme, through using the mounted position that the stopper can restrict the weldment, make the weldment can accurately place in the upper end of supporting shoe, avoid the weldment because not accurately place the in-process that causes the weldment heating on the supporting shoe, because brazing fixture heating deformation, lead to the weldment landing on the supporting shoe, cause the brazed size of weldment to change to the brazed precision of brazing fixture has been improved to a certain extent.

Preferably, the support plate is detachably connected with an anti-sticking block for supporting the weldment.

Through adopting above-mentioned technical scheme, use antiseized piece on the one hand can make the area of contact between reduction and the weldment to avoid weldment and antiseized piece to take place the adhesion, on the other hand use shorter antiseized piece and longer backup pad separation setting, can influence each other after backup pad and antiseized piece are heated and produce the deformation, thereby reduce the deformation volume, shorter antiseized piece is difficult for producing the deformation moreover, so can avoid antiseized piece upwards protruding influence weldment's size, thereby improved the brazed precision of using the anchor clamps of brazing.

Preferably, the upper portion of backup pad is integrative to be fixed with a plurality of being used for avoiding weldment with backup pad adhesion's lug, lug thickness is along keeping away from the direction of backup pad reduces gradually.

Through adopting above-mentioned technical scheme, use the lug can reduce the cross-sectional area of backup pad upper end to can avoid brazed in-process brazing filler metal to make weldment and backup pad link together, thereby be convenient for the taking of weldment more, improve user device's convenience.

Preferably, the two ends of the supporting plate are provided with limiting strips for limiting the distance between the adjacent supporting plates, the positions of the limiting strips corresponding to any supporting plate are provided with second inserting grooves, and the two ends of the supporting plate are provided with first inserting grooves which are in inserting fit with the second inserting grooves.

Through adopting above-mentioned technical scheme, not only can restrict the distance between the adjacent backup pad through spacing, can also avoid causing backup pad horizontal migration because of the thermal expansion in the in-process of using, improved the convenience that the device used.

Preferably, the upper side of the supporting plate is provided with connecting rods for ensuring that a plurality of supporting blocks are in the same plane near both ends.

Through adopting above-mentioned technical scheme, use the connecting rod to link together the supporting shoe, can avoid the device to be heated after the inflation, cause the upper end of supporting shoe not in the coplanar, make the weldment size of device change to the brazed precision of using the anchor clamps of brazing has been improved.

Preferably, the support plates on two sides are provided with plug-in blocks, one ends of the plug-in blocks, which are far away from the support plates, are abutted to the connecting angle steel, and the plug-in blocks are provided with fixing blocks for supporting the weldment.

Through adopting above-mentioned technical scheme, use the grafting piece to carry out the butt with the weldment, adopt one end to set up in the backup pad, the other end butt is on angle steel, and the grafting piece can not cause upwards butt weldment to cause the weldment size to change because of the restriction at both ends when being heated.

Preferably, seals are arranged at two ends of the connecting angle steel.

Through adopting above-mentioned technical scheme, adopt the strip of paper used for sealing on the one hand can shelter from the structure in the anchor clamps of brazing, improve the holistic pleasing to the eye degree of structure, on the other hand can keep unanimous with the both ends of a plurality of angle steel, avoid the angle steel when being heated and warp, because the atress position is inconsistent, cause the device to take place to twist and lead to the size of weldment to change.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the connecting angle steel with the openings arranged oppositely can enable the connecting angle steel to generate stress horizontally to the two ends of the supporting plate when being stressed and deformed, so that inward expansion and extrusion of the device are avoided, the brazing clamp is prevented from propping against a weldment, and the brazing accuracy of the brazing clamp is improved;

2. the deformation holes are used, so that internal stress is mutually offset in the deformation holes after the support plate is expanded at high temperature, the deformation quantity of the support plate is reduced, and the brazing accuracy of the brazing clamp is improved;

3. the use antiseized piece on the one hand can reduce the area of contact with the weldment to can take the weldment more conveniently, on the other hand adopts shorter antiseized piece to fix with longer backup pad, can influence each other when producing deformation after being heated, thereby reduces the deflection of antiseized piece, and the deformation that shorter antiseized piece produced after being heated is less moreover, so difficult deformation influences the size of weldment, thereby has further improved the brazed precision of using the anchor clamps of brazing.

Drawings

Fig. 1 is a schematic view of a heat sink brazing jig according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a heat sink brazing jig according to an embodiment of the present utility model.

Fig. 3 is a partial cross-sectional view taken along A-A in fig. 2.

Fig. 4 is an enlarged schematic view of a portion B in fig. 2.

Reference numerals: 1. a limiting block; 3. a support plate; 4. a limit bar; 5. a seal; 6. a weldment; 7. a connecting rod; 8. a support block; 9. a deformation hole; 10. a bump; 11. an anti-sticking block; 12. connecting angle steel; 13. a fixed block; 14. an anti-sticking groove; 15. a plug block; 16. and a support table.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-4.

The embodiment of the utility model discloses a radiator brazing clamp.

Referring to fig. 1 and 2, a radiator brazing clamp comprises a plurality of support plates 3 connected side by side, the support plates 3 are rectangular, first inserting grooves are formed in two ends of the support plates 3, limiting strips 4 used for limiting the distance between adjacent support plates 3 are inserted in the first inserting grooves, second inserting grooves matched with the first inserting grooves are formed in the limiting strips 4, supporting blocks 8 used for supporting weldments 6 are integrally fixed at the upper ends of the support plates 3 close to the two ends, the supporting blocks 8 are rectangular and have the same thickness as the support plates 3, limiting blocks 1 used for limiting the positions of the weldments 6 are integrally fixed at the two ends of the support plates 3, the limiting blocks 1 are rectangular and have the same thickness as the support plates 3, four inserting holes are symmetrically formed in the support plates 3, connecting angle steels 12 with opposite openings are inserted in the inserting holes, the two ends of each connecting angle steel 12 are used for connecting the plurality of the support plates 3 together, sealing strips 5 used for guaranteeing that the two ends of each connecting angle steel 12 are kept in the same plane are fixed with sealing strips 5, and 5 are L-shaped. Adopt such design to be the opening with angle connection 12 and be the relative installation, when angle connection 12 is heated and takes place the inflation extension, the deformation direction of angle connection 12 is the horizontal direction, avoided angle connection 12 to be heated the extension back, the top touches weldment 6, angle connection 12 sets up in pairs and can make the stress that both sides angle steel produced offset each other, the inside stress of structure has been alleviateed, backup pad 3 is under the pulling force of angle connection 12 in pairs, the stress of backup pad 3 heat distortion has been offset, thereby the brazed precision of using the anchor clamps of brazing has been improved.

Referring to fig. 2 and 3, the plurality of support plates 3 are divided into two support plates 3 located at both sides and a support plate 3 located in the middle, the support plate 3 in the middle is mounted with two anti-sticking blocks 11 for supporting the weldment 6 through bolting, the anti-sticking blocks 11 are rectangular blocks, and the thickness of the anti-sticking blocks 11 is gradually reduced along the direction away from the support plate 3, so that the purpose of supporting the weldment 6 can be achieved and the contact area with the weldment 6 can be reduced. The upper part of the middle supporting plate 3 is integrally fixed with a plurality of convex blocks 10 for avoiding the adhesion of the weldment 6 and the supporting plate 3, the convex blocks 10 are trapezoid, and the thickness of the convex blocks 10 is gradually reduced along the direction away from the supporting plate 3. Offer a plurality of deformation holes 9 that avoid backup pad 3 inflation deformation in the backup pad 3, deformation holes 9 are the round hole, adopt such design can make the device when heating together with weldment 6, through acting on deformation holes 9 with pressure, thereby reduce the deformation of backup pad 3, adopt anti-sticking piece 11 and backup pad 3 to be used for supporting weldment 6 through bolted connection, under the mutual influence of backup pad 3 and anti-sticking piece 11 during the heating, can reduce the short anti-sticking piece 11 support weldment 6 of backup pad 3 deformation influence length that length is longer, adopt the short anti-sticking piece 11 of length, thermal deformation is little, can reduce the anchor clamps of brazing in the brazing process thermal deformation top touch weldment 6, the brazed precision of anchor clamps of brazing has been used in the improvement.

Referring to fig. 2 and 3, the support blocks 8 on both sides are integrally fixed with a convex strip at one end close to the weldment 6, the section of the convex strip is in a boss shape, the thickness of the convex strip is gradually reduced along the direction away from the support plate 3, and the adhesion between the support plate 3 and the weldment 6 can be prevented by adopting such a design. The backup pad 3 of both sides is close to the outside and is pegged graft there is grafting piece 15, and grafting piece 15 is L type, and the one end that grafting piece 15 was kept away from backup pad 3 is pegged graft in the opening part of angle steel 12, and bolted connection has the fixed block 13 that is used for supporting weldment 6 on the grafting piece 15, and the side of fixed block 13 is the square, and grafting piece 15 peg graft in the bottom of fixed block 13 and have the brace table 16 that is used for supporting fixed block 13, and brace table 16 is the T type. The fixing block 13 is adopted to support the weldment 6, so that the contact area between the weldment 6 and the brazing clamp can be reduced, and the weldment 6 is more convenient to take.

Referring to fig. 3 and 4, a perforation is arranged at one end of the supporting block 8, which is close to the bump 10, a square cross section is formed in the perforation, a connecting rod 7 for ensuring that a plurality of supporting blocks 8 are in the same plane is arranged in the perforation in a penetrating way, the cross section of the connecting rod 7 is square, the side surface of the connecting rod 7 forms an included angle of 45 degrees with the horizontal plane, one side of the connecting rod 7, which is close to the upper end of the supporting plate 3, is exposed to the outside, and an anti-sticking groove 14 for preventing the welding piece 6 from being stuck with the supporting block 8 is formed at one end of the supporting block 8, which is close to the limiting block 1. By adopting the design, the supporting blocks 8 can still be kept on the same plane in a high-temperature environment, the size of the weldment 6 is prevented from changing due to the movement of the supporting blocks 8, and the accuracy of brazing by using the brazing clamp is improved.

The embodiment of the utility model provides a radiator brazing clamp, which is implemented by the following principle: the support plate 3 is matched and inserted in a fixed position through the first inserting groove and the second inserting groove, the connecting rod 7 passes through the through holes and is inserted in the support plate 3, four connecting angle steels 12 are oppositely arranged in the support plate 3 in a penetrating mode in pairs, the weldment 6 is placed on the support plate 3, the weldment 6 is supported by the support block 8 and the fixing block 13, the weldment 6 and the brazing clamp are placed in an environment with the temperature of 600 ℃ or higher for heating, the welding materials are connected after being heated, the weldment 6 is taken out for cooling, and therefore brazing of the weldment 6 is completed.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A radiator brazing jig which is characterized in that: including a plurality of backup pads (3) that the interval set up, arbitrary both ends of backup pad (3) all integrated into one piece has supporting shoe (8) that are used for supporting weldment (6), run through in backup pad (3) and be provided with connecting angle steel (12) that a plurality of openings set up relatively.

2. A heat sink brazing jig according to claim 1, wherein: the support plate (3) is provided with a plurality of deformation holes (9) penetrating through the thickness direction of the support plate (3) to reduce expansion deformation of the support plate.

3. A heat sink brazing jig according to claim 1, wherein: limiting blocks (1) used for limiting the position of the weldment (6) are integrally fixed at two ends of the supporting plate (3).

4. A heat sink brazing jig according to claim 3, wherein: the support plate (3) is detachably connected with an anti-sticking block (11) for supporting the weldment (6).

5. A heat sink brazing jig according to claim 4, wherein: the upper portion of backup pad (3) is integrative to be fixed with a plurality of lug (10) that are used for avoiding weldment (6) with backup pad (3) adhesion, lug (10) thickness is along keeping away from the direction of backup pad (3) reduces gradually.

6. A heat sink brazing jig according to claim 1, wherein: the two ends of the supporting plate (3) are respectively provided with a limiting strip (4) used for limiting the distance between the adjacent supporting plates (3), the positions, corresponding to any supporting plate (3), on the limiting strips (4) are respectively provided with a second inserting groove, and the two ends of the supporting plate (3) are respectively provided with a first inserting groove matched with the second inserting grooves in an inserting mode.

7. A heat sink brazing jig according to claim 1, wherein: the upper side of the supporting plate (3) is provided with connecting rods (7) close to two ends, wherein the connecting rods are used for ensuring that a plurality of supporting blocks (8) are in the same plane.

8. A heat sink brazing jig according to claim 1, wherein: the two sides of the welding piece are provided with plug-in blocks (15) on the supporting plates (3), one ends, away from the supporting plates (3), of the plug-in blocks (15) are abutted to the connecting angle steel (12), and fixing blocks (13) used for supporting the welding pieces (6) are arranged on the plug-in blocks (15).

9. A heat sink brazing jig according to claim 8, wherein: both ends of the connecting angle steel (12) are provided with seals (5).