A soldering equipment

Abstract

The invention discloses a soldering device, including a soldering furnace, the soldering furnace including a furnace, a driving unit is arranged outside the furnace, the driving unit is connected to an external magnetic rotor in transmission, an external magnetic steel is fixedly mounted on the external magnetic rotor, and the external magnetic steel is located on the outer side of the furnace; an internal magnetic rotor is arranged inside the furnace, an internal magnetic steel is fixedly mounted on the internal magnetic rotor, and the internal magnetic steel is located on the inner side of the furnace; a magnetic transmission connection is provided between the external magnetic steel and the internal magnetic steel, the internal magnetic rotor is connected to a pump for spraying molten tin, and the outlet of the pump is connected to a tin spray nozzle. By utilizing the non-contact magnetic transmission principle, the installation position of the driving unit can be flexibly adjusted, and the driving unit is arranged on the side or below the furnace, thereby achieving the purpose of reducing the height of the tin spray nozzle, reducing the flow distance of the tin liquid when spraying, reducing the temperature loss of the tin liquid during the flow process, making the tin surface stable, reducing the oxidation of the tin liquid, reducing the overall structure volume, facilitating maintenance and improving the solder quality.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic soldering, and in particular relates to a soldering device. Background Art

[0002] The Chinese utility model patent with publication number 208262033U discloses an online automatic soldering device, which outputs the transmission chain through the soldering furnace driving mechanism, thereby driving the solder stirring rod to rotate, prompting the tin liquid to spray out from the tin spray nozzle to realize the soldering operation.

[0003] However, the online automatic soldering equipment disclosed in the utility model patent has the following disadvantages:

[0004] In order to avoid leakage of tin liquid, the soldering furnace drive mechanism needs to be installed above the soldering furnace. During soldering, tin liquid is sprayed out from the tin spray nozzle and sprayed onto the circuit board from bottom to top. Therefore, in order to avoid collision between the soldering furnace drive mechanism and the circuit board, the tin spray nozzle needs to be raised, that is, the height of the tin spray nozzle needs to be extended so that the height of the tin spray nozzle is greater than the soldering furnace drive mechanism. Once the height of the tin spray nozzle is extended, the flow distance of the tin liquid in the tin spray nozzle increases, resulting in a decrease in the temperature of the tin liquid at the outlet of the tin spray nozzle, thereby affecting the quality of soldering. If the flow rate of the tin liquid is increased to compensate for the temperature loss caused by extending the height of the tin spray nozzle, the oxidation of the tin liquid will be accelerated, resulting in an increase in tin slag. Summary of the invention

[0005] The object of the present invention is to provide a soldering device, which utilizes the magnetic transmission principle and can arrange the driving unit on the side or below the furnace to solve the above technical problems.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A soldering device comprises a soldering furnace, wherein the soldering furnace comprises a furnace core, a driving unit is arranged outside the furnace core, and the driving unit is arranged on the side or below the furnace core;

[0008] The driving unit is drivingly connected to an external magnetic rotor, an external magnetic steel is fixedly mounted on the external magnetic rotor, and the external magnetic steel is located on the outer side of the furnace;

[0009] An inner magnetic rotor is provided in the furnace, an inner magnetic steel is fixedly mounted on the inner magnetic rotor, and the inner magnetic steel is located on the inner side of the furnace;

[0010] The outer magnetic steel and the inner magnetic steel are connected by magnetic transmission, the inner magnetic rotor is connected by transmission to a pump for spraying molten tin, and the outlet of the pump is connected to a tin spray nozzle.

[0011] As an optional technical solution of an embodiment of the present invention, the pump includes a cover body, the furnace and the cover body share a same bottom surface, and the internal magnetic steel is located on the inner side of the cover body.

[0012] As an optional technical solution of the embodiment of the present invention, the bottom surface is recessed downward to form a groove;

[0013] The inner magnetic steel is located in the groove, and the outer magnetic steel is located on the outer side of the side wall of the groove.

[0014] As an optional technical solution of the embodiment of the present invention, a cover plate is provided on the furnace;

[0015] A tin liquid reflux cavity is formed between the cover body, the furnace and the cover plate, and the internal space of the cover body is a tin liquid storage cavity;

[0016] The cover plate is provided with a reflux hole, and the side wall of the cover body is provided with a first liquid inlet hole;

[0017] The pump further comprises a transmission cylinder and a tin stirring unit fixedly mounted on the transmission cylinder, wherein the tin stirring unit is arranged in the cover body, one end of the transmission cylinder passes through the cover body and is connected to the tin spray nozzle, and one end of the tin spray nozzle away from the transmission cylinder passes through the cover plate;

[0018] The inner magnetic rotor is fixedly connected to the transmission cylinder, a hollow tin liquid flow channel is provided inside the transmission cylinder, and a second liquid inlet hole is opened on the side wall of the transmission cylinder;

[0019] The flow order of the tin liquid is the reflux hole, the tin liquid reflux cavity, the first liquid inlet hole, the tin liquid storage cavity, the second liquid inlet hole, the tin liquid flow channel, and the tin spray nozzle.

[0020] As an optional technical solution of an embodiment of the present invention, the soldering equipment also includes a first bearing, which is embedded and installed on the cover body, and the transmission cylinder passes through the cover body through the first bearing, and the transmission cylinder is rotatably connected to the cover body through the first bearing.

[0021] As an optional technical solution of the embodiment of the present invention, the reflow hole is trumpet-shaped, and the tin spray nozzle passes through the cover plate through the reflow hole.

[0022] As an optional technical solution of the embodiment of the present invention, an annular heating cover is installed on the outer wall of the furnace.

[0023] As an optional technical solution of the embodiment of the present invention, the driving unit includes a motor, a transmission chain and a transmission sprocket;

[0024] The motor is drivingly connected to the transmission chain, the transmission chain is meshed with the transmission sprocket, and the transmission sprocket is drivingly connected to the outer magnetic rotor.

[0025] As an optional technical solution of an embodiment of the present invention, the soldering equipment also includes a second bearing, which is arranged between the transmission sprocket and the external magnetic steel, and the external magnetic rotor is fixedly mounted on the second bearing.

[0026] As an optional technical solution of an embodiment of the present invention, the soldering equipment also includes a transmission disk, the transmission disk is fixedly connected to the external magnetic rotor, and the external magnetic steel is fixedly mounted on the transmission disk.

[0027] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0028] The outer magnetic rotor is driven to rotate by the driving unit, and the magnetic transmission effect between the inner magnetic steel and the outer magnetic steel is used to make the inner magnetic rotor rotate, so that the pump works, and the tin liquid is sprayed out from the tin spray nozzle to perform soldering. A soldering device provided by an embodiment of the present invention utilizes the non-contact magnetic transmission principle, and the installation position of the driving unit can be flexibly adjusted. The driving unit is arranged on the side or below the furnace, thereby achieving the purpose of reducing the height of the tin spray nozzle, reducing the flow distance of the tin liquid when it is sprayed, reducing the temperature loss of the tin liquid during the flow process, making the tin surface stable, reducing the oxidation of the tin liquid, reducing the overall structure volume, facilitating maintenance and improving the solder quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0031] Figures 1 to 4 A cross-sectional view of a soldering device provided by an embodiment of the present invention;

[0032] Figure 5An exploded diagram of the structure of the transmission sprocket driving the external magnetic steel provided in an embodiment of the present invention;

[0033] Figure 6 A structural diagram of an internal magnetic steel driven tin stirring unit provided in an embodiment of the present invention;

[0034] Figure 7 A structural diagram of the inner magnetic steel provided in an embodiment of the present invention;

[0035] Figure 8 A structural diagram of an external magnetic steel provided in an embodiment of the present invention.

[0036] Illustration Description:

[0037] Soldering furnace 10, furnace core 11, driving unit 12, external magnetic rotor 13, external magnetic steel 14, internal magnetic rotor 15, internal magnetic steel 16, pump 17, tin spray nozzle 18, bottom surface 19, groove 20, cover body 21, cover plate 22, tin liquid reflux cavity 23, tin liquid storage cavity 24, reflux hole 25, first liquid inlet hole 26, transmission cylinder 27, tin stirring unit 28, tin liquid flow channel 29, second liquid inlet hole 30, first bearing 31, annular heating outer cover 32, transmission chain 33, transmission sprocket 34, transmission plate 35, second bearing 36, second fixed seat 37, first fixed seat 38. DETAILED DESCRIPTION

[0038] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] This embodiment provides a soldering device, including a soldering furnace 10 . The soldering furnace 10 includes a furnace core 11 . A driving unit 12 is disposed outside the furnace core 11 .

[0040] A pump 17 for spraying molten tin is provided in the furnace 11 , and the driving unit 12 is used to drive the pump 17 to work.

[0041] In this embodiment, the drive unit 12 and the pump 17 work on the principle of non-contact magnetic transmission, so that the drive unit 12 can be placed at any position. Therefore, it is not necessary to install the drive unit 12 above the furnace 11 to prevent the tin liquid from leaking.

[0042] In order to reduce the flow distance of the tin liquid in the tin spray nozzle 18, that is, to reduce the height of the tin spray nozzle 18, it is necessary to place the driving unit 12 on the side or below the furnace 11. In this embodiment, the driving unit 12 is placed on the side of the furnace 11, such as Figure 1 shown.

[0043] Specifically, Figure 1 As shown, the drive unit 12 is connected to the external magnetic rotor 13, and the external magnetic steel 14 is fixedly mounted on the external magnetic rotor 13. The external magnetic steel 14 is located on the outer side of the furnace 11. When the drive unit 12 drives the external magnetic rotor 13 to rotate, the external magnetic steel 14 rotates on the outer side of the furnace 11. The structure of the external magnetic steel 14 is as shown in FIG. Figure 8 shown.

[0044] An inner magnetic rotor 15 is provided in the furnace 11, and an inner magnetic steel 16 is fixedly mounted on the inner magnetic rotor 15. The inner magnetic steel 16 is located on the inner side of the furnace 11. The structure of the inner magnetic steel 16 is as follows: Figure 7 shown.

[0045] The outer magnetic steel 14 and the inner magnetic steel 16 are connected by magnetic transmission. The outer magnetic steel 14 and the inner magnetic steel 16 use the principle of mutual attraction of opposite magnetic poles. When the outer magnetic steel 14 rotates, the inner magnetic steel 16 rotates accordingly, causing the inner magnetic rotor 15 to rotate.

[0046] The driving unit 12 is connected to a pump 17 for spraying molten tin via an inner magnetic rotor 15 , and a flow outlet of the pump 17 is connected to a tin spray nozzle 18 .

[0047] Therefore, in this embodiment, the transmission sequence is the drive unit 12, the outer magnetic rotor 13, the outer magnetic steel 14, the inner magnetic steel 16, the inner magnetic rotor 15, and the pump 17, and finally the tin liquid is sprayed out from the tin spray nozzle 18 for soldering.

[0048] Compared with the prior art, the driving unit 12 of the soldering equipment provided by the present application can be placed on the side or below the furnace 11 so as to reduce the height of the tin spray nozzle 18 and reduce the flow distance of the tin liquid when it is sprayed, thereby reducing the temperature loss during the flow of the tin liquid, making the tin surface smooth, reducing the oxidation of the tin liquid, reducing the overall structure volume, facilitating maintenance and improving the soldering quality.

[0049] For further information, see Figure 2 As shown, the pump 17 includes a housing 21, the furnace 11 and the housing 21 share the same bottom surface 19, and the inner magnetic steel 16 is located on the inner side of the housing 21. The purpose of sharing the same bottom surface 19 is to reduce the gap between the outer magnetic steel 14 and the inner magnetic steel 16, so as to reduce the magnetic loss and improve the efficiency of magnetic transmission.

[0050] Furthermore, the bottom surface 19 is recessed downward to form a groove 20, the inner magnetic steel 16 is located in the groove 20, and the outer magnetic steel 14 is located on the outer side of the side wall of the groove 20. Through the design of the groove 20, the magnetic force transmission between the outer magnetic steel 14 and the inner magnetic steel 16 is further enhanced, thereby improving the efficiency of the magnetic force transmission.

[0051] See also Figure 3 As shown, a cover plate 22 is provided on the furnace 11, so that a tin liquid reflux cavity 23 is formed between the cover body 21, the furnace 11 and the cover plate 22. The internal space of the cover body 21 is a tin liquid storage cavity 24.

[0052] Specifically, a reflux hole 25 is formed on the cover plate 22 , and a first liquid inlet hole 26 is formed on the side wall of the cover body 21 .

[0053] The pump 17 also includes a transmission cylinder 27 and a tin stirring unit 28 fixedly mounted on the transmission cylinder 27 . The tin stirring unit 28 is arranged in the cover body 21 . One end of the transmission cylinder 27 passes through the cover body 21 and is connected to the tin spray nozzle 18 . The end of the tin spray nozzle 18 away from the transmission cylinder 27 passes through the cover plate 22 .

[0054] The inner magnetic rotor 15 is fixedly connected to the transmission cylinder 27 . A hollow tin liquid flow channel 29 is provided inside the transmission cylinder 27 . A second liquid inlet hole 30 is provided on the side wall of the transmission cylinder 27 .

[0055] Therefore, in this embodiment, the driving unit 12 drives the outer magnetic rotor 13 to rotate, and then the outer magnetic steel 14 drives the inner magnetic steel 16 to rotate, and then the inner magnetic steel 16 drives the inner magnetic rotor 15 to rotate, and then the inner magnetic rotor 15 drives the transmission cylinder 27 to rotate, and finally the transmission cylinder 27 drives the tin stirring unit 28 to rotate, so that the pressure between the inside and outside of the transmission cylinder 27 changes, prompting the tin liquid to be sprayed out from the tin spray nozzle 18. The tin liquid circulates in the following order: the reflux hole 25, the tin liquid reflux cavity 23, the first liquid inlet hole 26, the tin liquid storage cavity 24, the second liquid inlet hole 30, the tin liquid flow channel 29, and the tin spray nozzle 18. Figures 1 to 4 In the figure, the direction of the arrow is the flow direction of the tin liquid.

[0056] As an optional method, the tin stirring unit 28 is an impeller structure.

[0057] See also Figures 3 to 5 In another embodiment of the present application, the soldering equipment also includes a first bearing 31, which is embedded and installed on the cover body 21 through a first fixed seat 38, and the transmission cylinder 27 passes through the cover body 21 through the first bearing 31, and the transmission cylinder 27 is rotatably connected to the cover body 21 through the first bearing 31.

[0058] Furthermore, in another embodiment of the present application, a specific implementation of the drive unit 12 is disclosed:

[0059] The driving unit 12 includes a motor (not shown), a transmission chain 33 and a transmission sprocket 34. The motor is drivingly connected to the transmission chain 33, the transmission chain 33 is meshed with the transmission sprocket 34, and the transmission sprocket 34 is drivingly connected to the outer magnetic rotor 13.

[0060] Therefore, the transmission chain 33 is driven to rotate by the motor, and the outer magnetic rotor 13 is driven to rotate via the transmission sprocket 34 .

[0061] See also Figure 6 As shown, in another embodiment of the present application, the soldering equipment also includes a second bearing 36, which is fixed on a second fixed seat 37 and arranged between the transmission sprocket 34 and the external magnetic steel 14, and the external magnetic rotor 13 is fixedly mounted on the second bearing 36.

[0062] In another embodiment of the present application, the soldering device further comprises a transmission disk 35, the transmission disk 35 is fixedly connected to the outer magnetic rotor 13, and the outer magnetic steel is fixedly mounted on the transmission disk 35. The outer magnetic rotor 13 drives the outer magnetic steel 14 to rotate via the transmission disk 35.

[0063] Furthermore, in another embodiment of the present application, the reflow hole 25 is in a trumpet shape, which is conducive to maintaining the temperature in the tin spray nozzle 18. The tin spray nozzle 18 passes through the cover plate 22 through the reflow hole 25.

[0064] Furthermore, in another embodiment of the present application, an annular heating cover 32 is installed on the outer wall of the furnace 11 .

[0065] To sum up, the soldering equipment provided by the present application adopts a non-contact magnetic transmission method, and can flexibly adjust the installation position of the drive unit 12. The drive unit 12 is arranged on the side or bottom of the furnace 11, thereby achieving the purpose of reducing the height of the tin spray nozzle 18, reducing the flow distance of the tin liquid when it is sprayed out, reducing the temperature loss of the tin liquid during the flow process, making the tin surface smooth, reducing the oxidation of the tin liquid, reducing the overall structure volume, facilitating maintenance and improving the soldering quality.

[0066] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A soldering device, comprising a soldering furnace, wherein the soldering furnace comprises a furnace core, and a driving unit is arranged outside the furnace core, wherein: The driving unit is arranged on the side or below of the furnace; The driving unit is drivingly connected to an external magnetic rotor, an external magnetic steel is fixedly mounted on the external magnetic rotor, and the external magnetic steel is located on the outer side of the furnace; An inner magnetic rotor is provided in the furnace, an inner magnetic steel is fixedly mounted on the inner magnetic rotor, and the inner magnetic steel is located on the inner side of the furnace; The outer magnetic steel and the inner magnetic steel are connected by magnetic transmission, the inner magnetic rotor is connected by transmission to a pump for spraying molten tin, and the outlet of the pump is connected to a tin spray nozzle; The pump comprises a cover body, the furnace and the cover body share a same bottom surface, and the inner magnetic steel is located on the inner side of the cover body; A cover plate is provided on the furnace; A tin liquid reflux cavity is formed between the cover body, the furnace and the cover plate, and the internal space of the cover body is a tin liquid storage cavity; The cover plate is provided with a reflux hole, and the side wall of the cover body is provided with a first liquid inlet hole; The pump further comprises a transmission cylinder and a tin stirring unit fixedly mounted on the transmission cylinder, wherein the tin stirring unit is arranged in the cover body, one end of the transmission cylinder passes through the cover body and is connected to the tin spray nozzle, and one end of the tin spray nozzle away from the transmission cylinder passes through the cover plate; The inner magnetic rotor is fixedly connected to the transmission cylinder, a hollow tin liquid flow channel is provided inside the transmission cylinder, and a second liquid inlet hole is opened on the side wall of the transmission cylinder; The flow order of the tin liquid is the reflux hole, the tin liquid reflux cavity, the first liquid inlet hole, the tin liquid storage cavity, the second liquid inlet hole, the tin liquid flow channel, and the tin spray nozzle; It also includes a transmission plate, which is fixedly connected to the outer magnetic rotor, and the outer magnetic steel is fixedly installed on the transmission plate.

2. A soldering device according to claim 1, characterized in that: The bottom surface is recessed downward to form a groove; The inner magnetic steel is located in the groove, and the outer magnetic steel is located on the outer side of the side wall of the groove.

3. A soldering device according to claim 1, characterized in that: It also includes a first bearing, which is embedded and installed on the cover body. The transmission cylinder passes through the cover body through the first bearing, and the transmission cylinder is rotatably connected with the cover body through the first bearing.

4. A soldering device according to claim 1, characterized in that: The reflow hole is in a trumpet shape, and the tin spray nozzle passes through the cover plate through the reflow hole.

5. A soldering device according to claim 1, characterized in that: The outer wall of the furnace is provided with an annular heating cover.

6. A soldering device according to claim 1, characterized in that: The driving unit comprises a motor, a transmission chain and a transmission sprocket; The motor is drivingly connected to the transmission chain, the transmission chain is meshed with the transmission sprocket, and the transmission sprocket is drivingly connected to the outer magnetic rotor.

7. A soldering device according to claim 6, characterized in that: It also includes a second bearing, which is arranged between the transmission sprocket and the external magnetic steel, and the external magnetic rotor is fixedly mounted on the second bearing.

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