CN114378392A - High-frequency induction brazing welding equipment and method - Google Patents
High-frequency induction brazing welding equipment and method Download PDFInfo
- Publication number
- CN114378392A CN114378392A CN202210042830.5A CN202210042830A CN114378392A CN 114378392 A CN114378392 A CN 114378392A CN 202210042830 A CN202210042830 A CN 202210042830A CN 114378392 A CN114378392 A CN 114378392A
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- contact
- support
- welding
- negative pressure
- pressure rod
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/002—Soldering by means of induction heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Induction Heating (AREA)
Abstract
The invention relates to high-frequency induction brazing welding equipment which comprises a support clamp, an induction coil and a contact lifting device, wherein the support clamp clamps a support and enables a welding position of the support to be exposed outside the support clamp, the contact lifting device is positioned above the welding position of the support and lifts a contact positioned at the welding position of the support, the induction coil is positioned below the welding position of the support, the contact lifting device lifts the contact to a certain height firstly, and after brazing filler metal positioned at the welding position of the support is heated to a completely molten state by the induction coil, the contact lifting device lowers the contact to the welding height and discharges bubbles. By adopting the scheme, the invention provides the high-frequency induction brazing welding equipment for improving the welding quality, and mainly solves the problem of poor welding area of the contact assembly caused by the sinking of the welding surface of the existing contact.
Description
Technical Field
The invention relates to the field of electric contact assembly welding equipment, in particular to high-frequency induction brazing welding equipment and a method adopting the equipment.
Background
In the welding process of the electrical contact assembly, for example, the electrical contact assembly shown in fig. 1 comprises a support a and a contact b welded on the support a, in order to ensure that the contact does not boil due to the heating of a soldering flux during the welding process to cause the displacement of the contact, a frequently used pressing device is in a mode of pressing two ceramic rods made of silicon nitride up and down, and the welding process has great influence on the assembly gap during the welding process and the exhaust gas during the welding process, so that higher requirements are provided for the flatness of the welding surface of the contact. The electric contact assembly is the most critical electric contact part in the low-voltage electrical apparatus switch, and the welding quality of the contact assembly determines the service life of the switch to a great extent, so that solving the welding quality of the contact assembly is the first problem faced by all technicians.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide high-frequency induction brazing welding equipment for improving welding quality, and mainly solves the problem that the welding area of a contact assembly is poor due to the fact that the welding surface of the existing contact is sunken.
In order to achieve the purpose, the invention provides the following technical scheme: including support anchor clamps, induction coil and contact elevating gear, support anchor clamps centre gripping support and the welding position that makes the support expose in the support anchor clamps outside, contact elevating gear be located support welding position's top and promote the contact that will be located support welding position, induction coil be located support welding position's below, contact elevating gear promote the take the altitude with the contact earlier, treat that induction coil will be located support welding position's brazing filler metal heating to complete molten state back, contact elevating gear will contact and descend to welding height and discharge the bubble.
By adopting the technical scheme, the lifting contact reserves a heating space for the brazing filler metal, after the brazing filler metal is heated to a completely molten state, the contact is kept flat and bubbles are completely discharged in a downward pressing mode, so that the welding quality of the contact is ensured, the brazing rate of a product after welding can reach more than 90%, and meanwhile, the production efficiency is improved and the consistency of the welding quality is good.
The invention is further configured to: the contact lifting device comprises a pressure rod cylinder, a pressure rod seat, a negative pressure rod and a pressure rod guide rail, wherein the pressure rod guide rail is vertically arranged, the pressure rod seat moves on the pressure rod guide rail, the pressure rod cylinder drives the pressure rod seat to move, the pressure rod seat is provided with a spring sleeve for the negative pressure rod to vertically pass through, a spring cavity surrounding the negative pressure rod is arranged in the spring sleeve, a pressure ring vertically moving on the spring cavity is arranged on the periphery of the negative pressure rod, an extrusion spring for extruding the pressure ring downwards is compressed between the pressure ring and the spring cavity, the lower end of the negative pressure rod is matched with the shape of the contact, a negative pressure hole vertically penetrates through the negative pressure rod, the upper end of the negative pressure hole is communicated with a negative pressure source, and the lower end of the negative pressure hole forms negative pressure for sucking the contact.
Through adopting above-mentioned technical scheme, on the one hand, the negative pressure hole forms stable, even and lasting negative pressure, and the shape of cooperation negative pressure depression bar lower extreme and contact adaptation makes the lift of contact more steady, and on the other hand, pushes down the in-process at the contact, and extrusion spring can effectively slow down and push down the progress to can arrange the bubble to the greatest extent, further improve contact welding quality.
The invention is further configured to: still include aligning device in advance, aligning device in advance including counterpoint clamping jaw and the clamping jaw cylinder that the drive was counterpointed the clamping jaw and is opened and shut, the counterpoint clamping jaw form the lift passageway about the contact when folding up.
Through adopting above-mentioned technical scheme, the counterpoint clamping jaw makes the contact except vertical, and the relative position of other position and support remains unchanged, guarantees the contact lift in-process and the counterpoint accuracy of support, guarantees finished product quality.
The invention is further configured to: the support device comprises a support rod and a support cylinder for driving the support rod to lift, and the top end of the support rod penetrates through the induction coil and abuts against the lower side of the welding position of the support.
Through adopting above-mentioned technical scheme, the bracing piece provides stable holding power when the support is pressurized to the support produces deformation when avoiding negative pressure depression bar to push down, guarantees finished product quality.
The invention also provides a welding method adopting the equipment, and provides the following technical scheme: (1) placing a bracket to be welded on a bracket clamp, and exposing the welding position of the bracket to the outer side of the bracket clamp; (2) placing the sheet solder at the welding position of the bracket: (3) placing the contact on the bracket and the brazing filler metal, closing the alignment clamping jaws, and limiting the contact to only lift through a formed lifting channel; (4) the negative pressure compression bar adsorbs the contact and rises to enable the contact to rise by a certain height; (5) moving the induction coil, lifting the induction coil to be right below the bracket, and enabling the silver solder to be located in the central area of the induction coil; (6) starting an induction welding power supply, pressing down a contact by a negative pressure lever after the brazing filler metal is heated to a completely molten state, gradually increasing the pressing down amount of a pressure lever pressure head by extruding a spring, and discharging bubbles to finish welding; (7) and the negative pressure rod stops the negative pressure of the adsorption contact and rises, the alignment clamping jaw is unfolded, the support clamp is loosened, and the finished product is taken away.
By adopting the technical scheme, the negative pressure compression bar absorbs the contact and then rises to form a space for fully heating the brazing filler metal, the brazing filler metal is matched with the central area of the induction coil, so that the heating is more efficient and uniform, after the contact is heated to a completely molten state, the contact is pressed down by the negative pressure compression bar, after the contact is pressed down to a welding position, the extrusion spring is compressed by the extrusion of the brazing filler metal material and bubbles, the bubbles are fully extruded in the subsequent recovery process until the welding of the contact and the support is completed, the welding quality of the contact can be ensured in the process, the brazing rate of the product after welding can reach more than 90%, and meanwhile, the production efficiency is improved, and the consistency of the welding quality is good.
Drawings
Figure 1 is a perspective view of an electrical contact assembly;
FIG. 2 is a perspective view of an embodiment of the present invention;
FIG. 3 is an enlarged view of A in FIG. 2;
fig. 4 is a bottom perspective view of the contact lifting device in accordance with an embodiment of the present invention;
FIG. 5 is a cross-sectional view of the negative pressure strut and spring housing in an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 2-5, the invention discloses a high-frequency induction brazing welding device, an electrical contact assembly comprises a bracket a and a contact B welded on the bracket a, the bracket in the scheme is a welding copper bracket, the contact material is AgCdO, the silver-based brazing filler metal component is B Ag25CuZn, the high-frequency induction brazing welding device comprises a bracket clamp 1, an induction coil 2 and a contact lifting device 3, the bracket clamp 1 is fixed on a turntable of an automation device and used as a carrier of the bracket, the bracket is sequentially processed, the bracket clamp 1 clamps the bracket and leads the welding position of the bracket to be exposed outside the bracket clamp 1, the contact lifting device 3 is positioned above the welding position of the bracket and lifts the contact positioned at the welding position of the bracket, the induction coil 2 is positioned below the welding position of the bracket, the contact lifting device 3 firstly lifts the contact to a certain height, after the induction coil 2 heats the brazing filler metal positioned at the welding position of the bracket to a completely molten state, the contact lifting device 3 lowers the contact to the welding height and discharges bubbles, the contact is lifted to reserve a heating space for the brazing filler metal, after the brazing filler metal is heated to a completely molten state, the contact is kept flat and the bubbles are completely discharged in a downward pressing mode, so that the welding quality of the contact is ensured, the brazing rate of a product after welding can reach more than 90%, and meanwhile, the production efficiency is improved and the consistency of the welding quality is good.
The contact lifting device 3 comprises a pressure rod cylinder 31, a pressure rod seat 32, a negative pressure rod 33 and a pressure rod guide rail 34, wherein the negative pressure rod 33 is made of epoxy resin, the pressure rod guide rail 34 is vertically arranged, the pressure rod seat 32 moves in the pressure rod guide rail 34, the pressure rod cylinder 31 drives the pressure rod seat 32 to move, the pressure rod seat 32 is provided with a spring sleeve 35 for the negative pressure rod 33 to vertically penetrate through, a spring cavity 351 surrounding the negative pressure rod 33 is arranged in the spring sleeve 35, the periphery of the negative pressure rod 33 is provided with a pressure ring 331 vertically moving in the spring cavity 351, an extrusion spring 352 for extruding the pressure ring 331 downwards is compressed between the pressure ring 331 and the spring cavity 351, the lower end of the negative pressure rod 33 is matched with the shape of a contact, the negative pressure rod 33 is vertically provided with a negative pressure hole 332 in a penetrating manner, the upper end of the negative pressure hole 332 is communicated with a negative pressure source, the lower end forms a negative pressure for sucking the contact, and the negative pressure source can be realized in various forms, adopt throttle valve 36 to let in the gaseous realization of adsorbing contact 0.5MPa in this scheme, on the one hand, negative pressure hole 332 forms stable, even and lasting negative pressure, and the shape of cooperation negative pressure depression bar 33 lower extreme and contact adaptation makes the lift of contact more steady, and on the other hand pushes down the in-process at the contact, and extrusion spring 352 can effectively slow down and push down the progress to can arrange the bubble to the greatest extent, further improve contact welding quality.
Still include aligning device in advance, aligning device includes counterpoint clamping jaw 4 and the clamping jaw cylinder 41 that the drive was counterpointed clamping jaw 4 and was opened and shut in advance, forms the lift passageway 42 about the contact when counterpointing clamping jaw 4 folds, and clamping jaw cylinder 41 is provided with the lift cylinder 43 of going up and down with it, and counterpoint clamping jaw 4 makes the contact except vertical, and other position keeps unchangeable with the relative position of support, guarantees the contact lift in-process and the accuracy of counterpointing of support, guarantees finished product quality.
Still include strutting arrangement, strutting arrangement includes the support cylinder 51 that bracing piece 5 and drive bracing piece 5 go up and down, and 5 tops of bracing piece pass induction coil 2 and support in the below of scaffold weldment position, and bracing piece 5 provides stable holding power when the support is pressurized to the support produces deformation when avoiding negative pressure depression bar 33 to push down, guarantees finished product quality.
The invention also provides a welding method adopting the equipment, and provides the following technical scheme: (1) placing a bracket to be welded on a bracket clamp 1, and exposing the welding position of the bracket to the outer side of the bracket clamp 1; (2) placing the sheet solder at the welding position of the bracket: (3) placing the contact on a bracket and brazing filler metal, closing the alignment clamping jaw 4, and limiting the contact to only lift through a formed lifting channel 42; (4) the negative pressure lever 33 adsorbs and rises the contact to lift the contact by a certain height; (5) moving the induction coil 2, lifting the induction coil 2 to be right below the bracket, and enabling the silver solder to be located in the central area of the induction coil 2; (6) starting an induction welding power supply, after the brazing filler metal is heated to a completely molten state, pressing down the contact by the negative pressure compression bar 33, gradually increasing the pressing down amount of a compression bar pressure head by extruding the spring 352, and discharging bubbles to finish welding; (7) the negative pressure pressing rod 33 stops the negative pressure of the adsorbed contact and rises, the alignment clamping jaw 4 is unfolded, the bracket clamp 1 is loosened, the finished product is taken away, the negative pressure pressing rod 33 adsorbs the contact and then rises to form a space for fully heating the brazing filler metal, the brazing filler metal is positioned in the central area of the induction coil 2 to enable the heating to be more efficient and uniform, after the contact is heated to a fully molten state, the contact is pressed down by the negative pressure pressing rod 33 and pressed to a welding position, the extrusion spring 352 is compressed by the extrusion of the brazing filler metal material and bubbles, and the bubbles are fully extruded in the subsequent recovery process until the welding of the contact and the bracket is completed, the process can ensure the welding quality of the contact, the welding percentage of the product after welding can reach more than 90 percent, meanwhile, the production efficiency is improved, the welding quality consistency is good, in addition, the bracket, the brazing filler metal and the contact are all placed by a feeding device of automatic equipment, and the movement of the induction coil can be realized by the existing air cylinder, the induction welding power supply is also a device of the existing welding equipment, and is not described in detail.
Claims (5)
1. A high-frequency induction brazing welding device is characterized in that: including support anchor clamps, induction coil and contact elevating gear, support anchor clamps centre gripping support and the welding position that makes the support expose in the support anchor clamps outside, contact elevating gear be located support welding position's top and promote the contact that will be located support welding position, induction coil be located support welding position's below, contact elevating gear promote the take the altitude with the contact earlier, treat that induction coil will be located support welding position's brazing filler metal heating to complete molten state back, contact elevating gear will contact and descend to welding height and discharge the bubble.
2. The high-frequency induction brazing welding apparatus according to claim 1, wherein: the contact lifting device comprises a pressure rod cylinder, a pressure rod seat, a negative pressure rod and a pressure rod guide rail, wherein the pressure rod guide rail is vertically arranged, the pressure rod seat moves on the pressure rod guide rail, the pressure rod cylinder drives the pressure rod seat to move, the pressure rod seat is provided with a spring sleeve for the negative pressure rod to vertically pass through, a spring cavity surrounding the negative pressure rod is arranged in the spring sleeve, a pressure ring vertically moving on the spring cavity is arranged on the periphery of the negative pressure rod, an extrusion spring for extruding the pressure ring downwards is compressed between the pressure ring and the spring cavity, the lower end of the negative pressure rod is matched with the shape of the contact, a negative pressure hole vertically penetrates through the negative pressure rod, the upper end of the negative pressure hole is communicated with a negative pressure source, and the lower end of the negative pressure hole forms negative pressure for sucking the contact.
3. The high-frequency induction brazing welding apparatus according to claim 2, wherein: still include aligning device in advance, aligning device in advance including counterpoint clamping jaw and the clamping jaw cylinder that the drive was counterpointed the clamping jaw and is opened and shut, the counterpoint clamping jaw form the lift passageway about the contact when folding up.
4. The high-frequency induction brazing welding apparatus according to claim 1, wherein: the support device comprises a support rod and a support cylinder for driving the support rod to lift, and the top end of the support rod penetrates through the induction coil and abuts against the lower side of the welding position of the support.
5. A welding method using the high-frequency induction brazing welding apparatus according to claim 3, characterized in that: (1) placing a bracket to be welded on a bracket clamp, and exposing the welding position of the bracket to the outer side of the bracket clamp; (2) placing the sheet solder at the welding position of the bracket: (3) placing the contact on the bracket and the brazing filler metal, closing the alignment clamping jaws, and limiting the contact to only lift through a formed lifting channel; (4) the negative pressure compression bar adsorbs the contact and rises to enable the contact to rise by a certain height; (5) moving the induction coil, lifting the induction coil to be right below the bracket, and enabling the silver solder to be located in the central area of the induction coil; (6) starting an induction welding power supply, pressing down a contact by a negative pressure lever after the brazing filler metal is heated to a completely molten state, gradually increasing the pressing down amount of a pressure lever pressure head by extruding a spring, and discharging bubbles to finish welding; (7) and the negative pressure rod stops the negative pressure of the adsorption contact and rises, the alignment clamping jaw is unfolded, the support clamp is loosened, and the finished product is taken away.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210042830.5A CN114378392A (en) | 2022-01-14 | 2022-01-14 | High-frequency induction brazing welding equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210042830.5A CN114378392A (en) | 2022-01-14 | 2022-01-14 | High-frequency induction brazing welding equipment and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114378392A true CN114378392A (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210042830.5A Pending CN114378392A (en) | 2022-01-14 | 2022-01-14 | High-frequency induction brazing welding equipment and method |
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| CN (1) | CN114378392A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090982A (en) * | 2022-07-01 | 2022-09-23 | 浙江福达合金材料科技有限公司 | Welding device and method for plastic case circuit breaker static contact assembly |
| CN115383238A (en) * | 2022-08-11 | 2022-11-25 | 浙江福达合金材料科技有限公司 | Welding device and method for moving contact component of contactor |
-
2022
- 2022-01-14 CN CN202210042830.5A patent/CN114378392A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090982A (en) * | 2022-07-01 | 2022-09-23 | 浙江福达合金材料科技有限公司 | Welding device and method for plastic case circuit breaker static contact assembly |
| CN115090982B (en) * | 2022-07-01 | 2023-07-21 | 浙江福达合金材料科技有限公司 | Welding device and method for fixed contact assembly of molded case circuit breaker |
| CN115383238A (en) * | 2022-08-11 | 2022-11-25 | 浙江福达合金材料科技有限公司 | Welding device and method for moving contact component of contactor |
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