Composite soldering piece automatic production line

Abstract

The present application relates to the technical field of composite soldering piece, and particularly relates to a composite soldering piece automatic production line, a first roller device is provided with a first material roll wound with an upper soldering material belt, a second material roll wound with a metal material belt, a third material roll wound with a lower soldering material belt, and an extrusion device used for extruding a protruding part at the upper end and the lower end of the metal material belt; the metal material belt passes through an extrusion cavity of the extrusion device and extends to the middle part of a roller cavity of the first roller device; the free end of the upper soldering material belt extends to the upper part of the roller cavity, the free end of the lower soldering material belt extends to the lower part of the roller cavity, the first roller device extrudes the upper soldering material belt, the metal material belt and the lower soldering material belt into a composite material belt, and a first blanking device is arranged at the downstream of the first roller device; the composite soldering piece automatic production line can automatically form a protruding part of a composite soldering piece, press the composite material belt, and blank the composite material belt into a composite soldering piece, thereby meeting the mass production requirement of the composite soldering piece.

Description

Technical Field

[0001] This invention relates to the field of composite welding sheet technology, and in particular to an automated production line for composite welding sheets. Background Technology

[0002] With the development of the information technology and automation industries, electronic components are becoming increasingly precise and integrated, placing higher demands on the heat dissipation of solder layers. The uniformity of the solder layer thickness between electronic components plays a crucial role in their heat dissipation performance. Because the solder melts into a fluid state and lacks support capacity, a poor perpendicularity between the pressure direction and the soldering surface of the upper and lower electronic components during the soldering process can cause the solder layer to tilt, resulting in uneven solder layer thickness. This unevenness reduces the operational reliability of the electronic components.

[0003] To ensure the uniformity of the weld layer thickness, Chinese invention patent application number 2023100818936 discloses a composite solder sheet, comprising a lower solder layer, a metal sheet, and an upper solder layer arranged sequentially from bottom to top. Both the lower and upper solder layers are made of solder filler metal. The upper end face of the metal sheet has multiple first protrusions spaced horizontally at intervals, and the lower end face of the metal sheet has multiple second protrusions spaced horizontally at intervals. Each first and second protrusion forms a support and limiting structure for supporting the first and second solder surfaces, ensuring that the first and second solder surfaces are arranged parallel to each other, preventing the solder layer from tilting and improving the uniformity of the solder layer thickness between the first and second solder surfaces. Due to the large quantity of electronic components used, there is an urgent need for a production line capable of mass-producing composite solder sheets with internal supporting metal sheets. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide an automated production line for composite solder sheets to mass-produce composite solder sheets with internal supporting metal sheets.

[0005] The automated production line for composite solder sheets of the present invention includes a control system and a first roller pressing device. Upstream of the first roller pressing device are a first roll of material with an upper brazing strip wound on it, a second roll of material with a metal strip wound on it, a third roll of material with a lower brazing strip wound on it, and an extrusion device for extruding protrusions at the upper and lower ends of the metal strip.

[0006] The metal strip passes through the extrusion chamber of the extrusion device and extends to the middle of the rolling chamber of the first rolling device; the free end of the upper brazing strip extends to the upper part of the rolling chamber, and the free end of the lower brazing strip extends to the lower part of the rolling chamber. The first rolling device extrudes the upper brazing strip, the metal strip, and the lower brazing strip entering the rolling chamber into a composite strip. Downstream of the first rolling device, there is a first punching device for punching the composite strip into a composite solder sheet.

[0007] The extrusion device, the first punching device, and the first rolling device are all electrically connected to the control system. The control system controls the first rolling device to rotate intermittently and controls the extrusion device and the first punching device to start when the first rolling device stops rotating.

[0008] As a preferred embodiment, the automated production line for composite welding sheets includes a second punching device for punching vertically arranged ventilation holes on the metal strip. The second punching device is electrically connected to the control system and is arranged between the extrusion device and the first roller pressing device. The metal strip with protrusions is extruded sequentially through the punching chamber of the second punching device and enters the roller pressing chamber of the first roller pressing device.

[0009] As a preferred embodiment, the automated production line for composite welding sheets includes a spraying device for spraying flux onto the upper and lower surfaces of the metal strip. The spraying device is arranged between the second punching device and the first rolling device. The metal strip with protrusions is extruded and passes sequentially through the punching cavity of the second punching device, the spraying space of the spraying device, and into the rolling cavity of the first rolling device.

[0010] As a preferred embodiment, the spraying device is electrically connected to the control system. When the first roller pressing device rotates, the control system controls the spraying device to start the spraying operation. When the first roller pressing device stops rotating, the control system controls the spraying device to stop the spraying operation.

[0011] As a preferred embodiment, the automated production line for composite welded sheets includes a cleaning device arranged between the spraying device and the second punching device, the cleaning device being used to remove impurities from the upper and lower surfaces of the metal strip.

[0012] As a preferred embodiment, the cleaning device includes at least one upper air nozzle and at least one lower air nozzle, the upper air nozzle being arranged toward the upper end face of the metal strip and the lower air nozzle being arranged toward the lower end face of the metal strip.

[0013] As a preferred embodiment, the first roll, the second roll, and the third roll all include a rotating shaft. A first baffle is provided on the outer side of the first end of each rotating shaft, and a third baffle is fixed on the outer side of the second end of each rotating shaft. A second baffle is provided between the first baffle and the third baffle. The second baffle is sleeved on the outer side of the rotating shaft, and a compression spring is provided between the second baffle and the third baffle. The first baffle and the second baffle form a material-containing space.

[0014] As a preferred embodiment, the automated production line for composite welded sheets includes a second roller pressing device for leveling the composite strip. The second roller pressing device is arranged between the first punching device and the first roller pressing device. The composite strip passes through the second roller pressing device and extends into the punching cavity of the first punching device.

[0015] The second roller pressing device is electrically connected to the control system, and the control system controls the second roller pressing device to start synchronously with the first roller pressing device.

[0016] As a preferred embodiment, the automated production line for composite welded sheets includes a heating device for heating the composite strip, the heating device being arranged between the second rolling device and the first rolling device.

[0017] As a preferred embodiment, the heating device is a tunnel-type heating furnace.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The automated composite solder sheet production line of the present invention includes a first roll of material with an upper solder strip wound on it, a second roll of material with a metal strip wound on it, a third roll of material with a lower solder strip wound on it, and an extrusion device for extruding protrusions at the upper and lower ends of the metal strip on the upstream side of the first roller pressing device; the metal strip passes through the extrusion chamber of the extrusion device and extends to the middle of the roller pressing chamber of the first roller pressing device; the free end of the upper solder strip extends to the upper part of the roller pressing chamber, and the free end of the lower solder strip extends to the lower part of the roller pressing chamber; the first roller pressing device presses the upper solder strip, the lower solder strip, and the lower solder strip into the roller pressing chamber. The metal strip and the lower brazing strip are extruded into a composite strip and a backward driving force is provided to the composite strip. Downstream of the first roller pressing device, there is a first punching device for punching the composite strip into composite weld sheets. The control system controls the first roller pressing device to rotate intermittently and controls the extrusion device and the first punching device to start when the first roller pressing device stops rotating. Therefore, the automated production line for composite weld sheets of the present invention can automatically form the protrusions of the composite weld sheets, press the composite strip, and punch the composite strip into composite weld sheets, thus meeting the requirements for mass production of composite weld sheets. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the automated production line for composite welding sheets of the present invention;

[0021] Figure 2 This is an isometric view of the first coil;

[0022] Figure 3 This is the front view of the first roll;

[0023] Figure 4 This is an isometric view of the third baffle.

[0024] In the diagram, 100 is the composite strip; 101 is the upper brazing strip; 102 is the metal strip; 103 is the lower brazing strip; 104 is the composite solder sheet; 1 is the first rolling device; 21 is the first roll; 211 is the rotating shaft; 212 is the first baffle; 213 is the third baffle; 214 is the second baffle; 215 is the compression spring; 22 is the second roll; 23 is the third roll; 3 is the extrusion device; 4 is the first punching device; 5 is the second punching device; 6 is the spraying device; 7 is the cleaning device; 8 is the second rolling device; and 9 is the heating device. Detailed Implementation

[0025] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0026] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0027] like Figures 1 to 4As shown, a preferred embodiment of the automated production line for composite solder sheets of the present invention includes a first roller pressing device 1. Upstream of the first roller pressing device 1 are a first roll 21 wound with an upper solder strip 101, a second roll 22 wound with a metal strip 102, a third roll 23 wound with a lower solder strip 103, and an extrusion device 3 for extruding protrusions at the upper and lower ends of the metal strip 102. The metal strip 102 passes through the extrusion chamber of the extrusion device 3 and extends to the first roller pressing device. The middle part of the roller pressing chamber of 1; the free end of the upper brazing strip 101 extends to the upper part of the roller pressing chamber, and the free end of the lower brazing strip 103 extends to the lower part of the roller pressing chamber. The first roller pressing device 1 extrudes the upper brazing strip 101, metal strip 102 and lower brazing strip 103 entering the roller pressing chamber into a composite strip 100 and provides a backward driving force to the composite strip 100. Downstream of the first roller pressing device 1, there is a first punching device 4 for punching the composite strip 100 into a composite solder sheet 104. The first roller pressing device 1 can compress the upper brazing strip 101, metal strip 102 and lower brazing strip 103 entering the roller pressing chamber into a composite strip 100 and provide a backward driving force to the composite strip 100, realizing the functions of pressing and automatic feeding. The extrusion device 3, the first punching device 4 and the roller pressing device are all electrically connected to the control system. The control system controls the roller pressing device to rotate intermittently, and controls the extrusion device 3 and the first punching device 4 to start when the roller pressing device stops rotating. Therefore, the automated production line for composite welded sheets of the present invention can automatically form the protrusions of composite welded sheets, press the composite strip and punch the composite strip into composite welded sheets, meeting the requirements for mass production of composite welded sheets.

[0028] Specifically, the first blanking device 4 includes a first stamping press and a first blanking die mounted on the first stamping press; the extrusion device 3 includes a second stamping press and an extrusion die mounted on the second stamping press; the first rolling device 1 includes an upper roller, a lower roller, and a first rotary drive device for driving the upper roller and the lower roller to rotate. The upper roller and the lower roller are spaced apart vertically, and the gap between the upper roller and the lower roller forms a rolling chamber. The first rotary drive device, the first stamping press, and the second stamping press are all electrically connected to the control system. The control system controls the first rotary drive device to rotate intermittently, and controls the first stamping press and the second stamping press to start blanking and extrusion operations when the first rotary drive device stops rotating. Furthermore, when the first rolling device rotates, the extrusion die and the first blanking die remain open, thereby allowing the metal strip and the composite strip to move freely, avoiding bending of the metal strip and the composite strip, and realizing the automatic forming of the composite welded sheet.

[0029] Furthermore, the automated production line for composite welded sheets includes a second punching device 5 for punching vertically arranged vent holes on the metal strip 102. The second punching device 5 is electrically connected to the control system and is arranged between the extrusion device 3 and the first roller pressing device 1. The metal strip 102 with extruded protrusions passes sequentially through the punching chamber of the second punching device 5 and enters the roller pressing chamber of the first roller pressing device 1. The second punching device 5, by processing the vent holes on the metal strip 102, not only avoids air bubbles remaining inside the weld layer but also facilitates the flow and diffusion of molten solder at both ends of the metal sheet through the through holes during the welding process, thereby promoting metallurgical reactions and improving the quality of the weld layer. Specifically, the second punching device 5 includes a third press and a second punching die mounted on the third press, which is electrically connected to the control system.

[0030] Furthermore, the automated production line for composite solder sheets includes a spraying device 6 for spraying flux onto the upper and lower surfaces of the metal strip 102. The spraying device 6 is arranged between the second punching device 5 and the first rolling device 1. The metal strip 102, with protrusions, passes sequentially through the punching cavity of the second punching device 5, the spraying space of the spraying device 6, and enters the rolling cavity of the first rolling device 1. The addition of flux helps reduce the surface tension of the composite solder sheet after melting, which is beneficial for the wetting and spreading of the solder on the metal sheet.

[0031] In this embodiment, the spraying device 6 is electrically connected to the control system. When the first roller pressing device 1 rotates, the control system controls the spraying device 6 to start the spraying operation. When the first roller pressing device 1 stops rotating, the control system controls the spraying device 6 to stop the spraying operation.

[0032] Specifically, the spraying device 6 includes at least one upper nozzle and at least one lower nozzle. The upper nozzle is arranged facing the upper end face of the metal strip 102, and the lower nozzle is arranged facing the lower end face of the metal strip 102. The spraying device 6 also includes a feed pump for supplying material to each nozzle. The feed pump is electrically connected to the control system. When the control system controls the first rotary drive device to rotate, the control system controls the feed pump to start the spraying operation, thereby making the flux spraying more uniform and avoiding uneven flux spraying and flux waste caused by continuous spraying by the nozzle when the composite strip is stationary. In other embodiments of the present invention, the feed pump may not be electrically connected to the control system and may be manually turned on, so that the feed pump always maintains the spraying operation.

[0033] In this embodiment, the automated production line for composite solder sheets includes a cleaning device 7 arranged between the spraying device 6 and the second punching device 5. The cleaning device 7 is used to remove impurities from the upper and lower surfaces of the metal strip 102. The cleaning device 7 can remove impurities from the upper and lower surfaces of the metal strip 102, ensuring the quality of flux spraying.

[0034] Specifically, the cleaning device 7 includes at least one upper air nozzle and at least one lower air nozzle. The upper air nozzle is arranged facing the upper end face of the metal strip 102, and the lower air nozzle is arranged facing the lower end face of the metal strip 102. During the punching process, metal debris easily remains on the metal strip 102. The air nozzles can spray away the metal debris, ensuring a cleaning effect. The nozzles can be connected to a compressed air source or an air pump. When the nozzles are connected to an air pump, the air pump is electrically connected to the control system. When the nozzles are connected to a compressed air source, a control valve is installed on the air pipe, and the control valve is electrically connected to the control system to control the timing of the air nozzle operation.

[0035] In this embodiment, the first roll 21, the second roll 22, and the third roll 23 all include a rotating shaft 211. A first baffle 212 is provided on the outer side of the first end of each rotating shaft 211, and a third baffle 213 is fixed to the outer side of the second end of each rotating shaft 211. A second baffle 214 is provided between the first baffle 212 and the third baffle 213, and the second baffle 214 is sleeved on the outer side of the rotating shaft 211. A compression spring 215 is provided between the second baffle 214 and the third baffle 213. The first baffle 212 and the second baffle 214 enclose a material-containing space. The compression spring 215 allows the second baffle 214 to elastically press against the first, second, or third roll, ensuring the stability of the feeding process. Specifically, as shown... Figure 4 As shown, both the first and third baffles are non-enclosed rings. The non-enclosed rings are detachably connected to the rotating shaft by fastening screws, which facilitates the adjustment of the positions of the first and third baffles, making them suitable for material strips of various widths.

[0036] In this embodiment, the composite welding sheet automated production line includes a second roller pressing device 8 for leveling the composite strip 100. The second roller pressing device 8 is arranged between the first punching device 4 and the first roller pressing device 1. The composite strip 100 passes through the second roller pressing device 8 and extends into the punching cavity of the first punching device 4.

[0037] The second roller pressing device 8 is electrically connected to the control system, so that the second roller pressing device 8 and the first roller pressing device 1 operate synchronously.

[0038] In this embodiment, the automated production line for composite welded sheets includes a heating device 9 for heating the composite strip 100. The heating device 9 is arranged between the second roller pressing device 8 and the first roller pressing device 1. The heating device 9 heats the composite strip, softening it and facilitating the leveling operation of the second roller pressing device 8.

[0039] Specifically, heating device 9 is a tunnel-type heating furnace.

[0040] In summary, the automated composite solder sheet production line of the present invention includes a first roller pressing device 1. Upstream of the first roller pressing device 1 are a first roll 21 wound with an upper solder strip 101, a second roll 22 wound with a metal strip 102, a third roll 23 wound with a lower solder strip 103, and an extrusion device 3 for extruding protrusions at the upper and lower ends of the metal strip 102. The metal strip 102 passes through the extrusion chamber of the extrusion device 3 and extends to the rollers of the first roller pressing device 1. The middle part of the pressure chamber; the free end of the upper brazing strip 101 extends to the upper part of the roller pressing chamber, and the free end of the lower brazing strip 103 extends to the lower part of the roller pressing chamber. The first roller pressing device 1 extrudes the upper brazing strip 101, metal strip 102 and lower brazing strip 103 entering the roller pressing chamber into a composite strip 100 and provides a backward driving force to the composite strip 100. Downstream of the first roller pressing device 1, there is a first punching device 4 for punching the composite strip 100 into a composite solder sheet 104. The first roller pressing device 1 can compress the upper brazing strip 101, metal strip 102 and lower brazing strip 103 entering the roller pressing chamber into a composite strip 100 and provide a backward driving force to the composite strip 100, realizing the functions of pressing and automatic feeding. The extrusion device 3, the first punching device 4 and the roller pressing device are all electrically connected to the control system. The control system controls the roller pressing device to rotate intermittently, and controls the extrusion device 3 and the first punching device 4 to start when the roller pressing device stops rotating. Therefore, the automated production line for composite welded sheets of the present invention can automatically form the protrusions of composite welded sheets, press the composite strip and punch the composite strip into composite welded sheets, meeting the requirements for mass production of composite welded sheets.

[0041] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. An automated production line for composite welding sheets, characterized in that, The system includes a control system and a first roller pressing device (1). Upstream of the first roller pressing device (1) are a first roll (21) with an upper brazing strip (101) wound on it, a second roll (22) with a metal strip (102) wound on it, a third roll (23) with a lower brazing strip (103) wound on it, and an extrusion device (3) for extruding protrusions at the upper and lower ends of the metal strip (102). The metal strip (102) passes through the extrusion chamber of the extrusion device (3) and extends to the middle of the rolling chamber of the first rolling device (1); the free end of the upper brazing strip (101) extends to the upper part of the rolling chamber, and the free end of the lower brazing strip (103) extends to the lower part of the rolling chamber. The first rolling device (1) extrudes the upper brazing strip (101), the metal strip (102) and the lower brazing strip (103) entering the rolling chamber into a composite strip (100). Downstream of the first rolling device (1) is a first punching device (4) for punching the composite strip (100) into a composite solder sheet (104). The extrusion device (3), the first punching device (4) and the first roller pressing device (1) are all electrically connected to the control system. The control system controls the first roller pressing device (1) to rotate intermittently, and controls the extrusion device (3) and the first punching device (4) to start when the first roller pressing device (1) stops rotating.

2. The automated production line for composite welded sheets according to claim 1, characterized in that, The automated production line for composite welding sheets includes a second punching device (5) for punching vertically arranged ventilation holes on the metal strip (102). The second punching device (5) is electrically connected to the control system and is arranged between the extrusion device (3) and the first roller pressing device (1). The metal strip (102) with protrusions is extruded and passes through the punching cavity of the second punching device (5) and enters the roller pressing cavity of the first roller pressing device (1).

3. The automated production line for composite welded sheets according to claim 2, characterized in that, The automated production line for composite welding sheets includes a spraying device (6) for spraying flux onto the upper and lower surfaces of the metal strip (102). The spraying device (6) is arranged between the second punching device (5) and the first rolling device (1). The metal strip (102) with protrusions is extruded and passes sequentially through the punching cavity of the second punching device (5), the spraying space of the spraying device (6), and the rolling cavity of the first rolling device (1).

4. The automated production line for composite welded sheets according to claim 3, characterized in that, The spraying device (6) is electrically connected to the control system. When the first roller pressing device (1) rotates, the control system controls the spraying device (6) to start the spraying operation. When the first roller pressing device (1) stops rotating, the control system controls the spraying device (6) to stop the spraying operation.

5. The automated production line for composite welded sheets according to claim 3, characterized in that, The automated production line for composite welded sheets includes a cleaning device (7) arranged between the spraying device (6) and the second punching device (5), the cleaning device (7) being used to remove impurities from the upper and lower surfaces of the metal strip (102).

6. The automated production line for composite welded sheets according to claim 5, characterized in that, The cleaning device (7) includes at least one upper nozzle and at least one lower nozzle, the upper nozzle being arranged toward the upper end face of the metal strip (102) and the lower nozzle being arranged toward the lower end face of the metal strip (102).

7. The automated production line for composite welded sheets according to claim 1, characterized in that, The first roll (21), the second roll (22), and the third roll (23) all include a rotating shaft (211). A first baffle (212) is provided on the outer side of the first end of each rotating shaft (211). A third baffle (213) is fixed on the outer side of the second end of each rotating shaft (211). A second baffle (214) is provided between the first baffle (212) and the third baffle (213). The second baffle (214) is sleeved on the outer side of the rotating shaft (211). A compression spring (215) is provided between the second baffle (214) and the third baffle (213). The first baffle (212) and the second baffle (214) form a material-containing space.

8. The automated production line for composite welded sheets according to any one of claims 1 to 7, characterized in that, The automated production line for composite welded sheets includes a second roller pressing device (8) for leveling the composite strip (100). The second roller pressing device (8) is arranged between the first punching device (4) and the first roller pressing device (1). The composite strip (100) passes through the second roller pressing device (8) and extends into the punching cavity of the first punching device (4). The second roller pressing device (8) is electrically connected to the control system, and the control system controls the second roller pressing device (8) to start synchronously with the first roller pressing device (1).

9. The automated production line for composite welded sheets according to claim 8, characterized in that, The automated production line for composite welded sheets includes a heating device (9) for heating the composite strip (100), the heating device (9) being arranged between the second roller pressing device (8) and the first roller pressing device (1).

10. The automated production line for composite welded sheets according to claim 9, characterized in that, The heating device (9) is a tunnel-type heating furnace.

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