Jet liquid solder ball welding assembly and liquid solder ball spot welding machine

Abstract

A liquid solder ball spraying welding assembly comprises a feeding pot, a feeding pot cover, a first electric heating ring, a liquid storage pot, a spraying pot, a spraying pot cover, a flexible diaphragm, a second electric heating ring, a first floater assembly, a second floater assembly, a nozzle, a first digital display pressure regulating valve, a second digital display pressure regulating valve, a third digital display pressure regulating valve and a high-frequency pneumatic electromagnetic valve. The first hollow floater is located in the liquid storage pot, the upper rod part is in clearance fit with the first valve element seat, and the upper valve element part is matched with the first valve element seat; the upper sliding rod part is fixed with the flexible diaphragm and extends into the air inlet pipe; the second digital display pressure regulating valve, the high-frequency pneumatic electromagnetic valve and the air inlet pipe are communicated in sequence; and the third digital display pressure regulating valve is communicated with the spraying pot. The first electric heating ring wraps the feeding pot and the liquid storage pot, and the second electric heating ring wraps the spraying pot. A high-frequency pneumatic electromagnetic valve, a second floater assembly and a nozzle are arranged, the second floater assembly is controlled through the high-frequency pneumatic electromagnetic valve, and the liquid tin balls are sprayed out of the nozzle; the interval time for spraying the liquid solder balls can be controlled, and the liquid solder balls are consistent in size.

Description

Technical Field

[0001] The invention relates to the technical field of soldering, in particular to a soldering head for spraying liquid solder balls. Background Art

[0002] At present, the existing technology, China Patent 201080013922.6, a local jet soldering device and a local jet soldering method, even if a nozzle with a small ejection port is used in a local jet solder tank, it is possible to locally jet solder to the component mounting member without reducing the speed of the pump of the solder tank which is difficult to set.

[0003] Stable ejection of molten solder. Figure 3 As shown, a local jet automatic soldering device (100) comprises: a solder tank (4) for accommodating molten solder (7) and having a nozzle base (44); a pump (5) for applying a predetermined pressure to the molten solder (7) in the solder tank (4) to supply it to the nozzle base (44); a plurality of nozzles (8a, etc.) having a predetermined solder ejection area and connected to the nozzle base (44) for ejecting the molten solder (7) with a predetermined pressure supplied from the pump (5) in a surging manner by means of surface tension; a dummy nozzle (32) having a solder ejection area larger than that of the nozzle (8a, etc.) and connected to the nozzle base (44) for ejecting the molten solder (7) with a predetermined pressure supplied from the pump (5); the dummy nozzle (32) is arranged at a position closer to the pump (5) than the nozzle (8a, etc.). A problem is that the solder joints are irregular and tend to flow along the nozzles. Summary of the Invention

[0004] The purpose of the present invention is to provide a liquid solder ball welding assembly, which has the characteristics of direct and uniform tin liquid spraying.

[0005] The present invention is realized as follows: a liquid solder ball spraying welding assembly, which is special in that it includes: a feeding pot with an upper opening, a feeding pot cover, a first electric heating coil, a liquid storage pot with an upper opening, a spray pot with an upper opening, a spray pot cover, a flexible diaphragm, a second electric heating coil, a first float assembly, a second float assembly, a nozzle, a first digital display pressure regulating valve, a second digital display pressure regulating valve, a third digital display pressure regulating valve and a high-frequency pneumatic solenoid valve,

[0006] The feeding pot includes a liquid guide channel, a switch valve and a first valve core seat.

[0007] The liquid storage pot includes a longitudinal guide hole provided on the bottom plate;

[0008] The spray pot includes a sink hole, a longitudinal liquid channel, a valve core seat, a movable cavity and a longitudinal liquid outlet channel;

[0009] The spray pot cover includes a cylindrical interface and an air inlet pipe.

[0010] The first float assembly includes a first hollow float, an upper rod, an upper valve core, an upper limit rod and a liquid level regulating rod.

[0011] The second float assembly includes an upper sliding rod, a second hollow float, a valve stem, a valve core and a head.

[0012] The feeding pot and liquid storage pot are arranged one above the other and sealed. The feeding pot lid is removably mated to the feeding pot and connected to a first digital pressure-regulating valve. The liquid level adjustment rod is spaced apart from the longitudinal guide hole, the first hollow float is located within the liquid storage pot, the upper rod is spaced apart from the first valve core seat, and the upper valve core is engaged with the first valve core seat. The spray pot and liquid storage pot are arranged parallel and in series. A flexible diaphragm is located within the counterbore, the cylindrical interface is inserted into the counterbore, and the upper end of the spray pot lid is in contact with the upper end of the spray pot. The head is located within the movable cavity, the valve stem is spaced apart from the longitudinal liquid passage, and the valve core is opposed to the valve core seat. The upper sliding rod is fixed to the flexible diaphragm and extends into the air inlet pipe, and the nozzle is located at the lower end of the longitudinal liquid outlet passage. A second digital pressure-regulating valve, a high-frequency pneumatic solenoid valve, and the air inlet pipe are sequentially connected. A third digital pressure-regulating valve is connected to the spray pot. A first electric heating coil surrounds the feeding pot and liquid storage pot, while a second electric heating coil surrounds the spray pot.

[0013] Preferably: the upper sliding rod is provided with an annular groove, and the flexible diaphragm is provided with an axial hole;

[0014] The flexible diaphragm at the axis hole is engaged with the annular groove; the flexible diaphragm and the upper sliding rod move up and down together.

[0015] Preferably, a series pipe is further included, the liquid storage pot and the spray pot are respectively provided with a connecting hole, and both ends of the series pipe are plugged into the connecting hole and sealed.

[0016] Preferably, the first hollow float and the second hollow float are both spherical.

[0017] Preferably: the upper open end of the feeding pot is provided with an annular plug-in groove;

[0018] An annular sealing cylinder is provided on the feeding pot cover, the feeding pot cover is fitted with the upper opening of the feeding pot, and the annular sealing cylinder is inserted into the annular plug-in groove.

[0019] Preferably, the flow guide channel includes an upper channel, a control chamber, a lower channel, a radial sealing channel and a threaded chamber. The radial sealing channel and the lower channel are in a straight line and are respectively connected to the control chamber. The connection point between the control chamber and the lower channel is a switch valve core seat.

[0020] The control part includes a frustum valve core, a sealing valve stem, an external thread part and a driving part.

[0021] The frustoconical valve core part cooperates with the switch valve core seat, the sealing valve stem part and the radial sealing channel are slidably matched and sealed, and the external thread part and the threaded cavity are screwed together; the switch valve core seat, radial sealing channel, threaded cavity and control component constitute the switch valve.

[0022] Preferably, the feeding pot, the feeding pot cover, the liquid storage pot, the spray pot and the spray pot cover are made of high temperature resistant materials.

[0023] Preferably, the series pipes are made of stainless steel.

[0024] A liquid solder ball spot welding machine is special in that it comprises the above-mentioned spray liquid solder ball welding assembly.

[0025] The present invention discloses a liquid solder ball spraying welding assembly, which comprises a high-frequency pneumatic solenoid valve, a second float assembly and a nozzle. The high-frequency pneumatic solenoid valve is used to control the second float assembly to spray liquid solder balls from the nozzle. The interval time of spraying the liquid solder balls can be controlled, and the liquid solder balls are of uniform size. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional view of the present invention.

[0027] Figure 2 It is a partial three-dimensional cross-sectional view of the present invention.

[0028] Figure 3 It is a three-dimensional diagram of the spot welding machine of the present invention. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components.

[0031] Pass

[0032] For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Example 1

[0034] like Figure 1As shown, a liquid solder ball spraying assembly includes a feeding pot 1 with an upper opening, a feeding pot cover 2, a first electric heating coil 31, a liquid storage pot 4 with an upper opening, a spray pot 5 with an upper opening, a spray pot cover 6, a flexible diaphragm 7, a second electric heating coil 32, a first float assembly 81, a second float assembly 82, a nozzle 9, a first digital display pressure regulating valve 101, a second digital display pressure regulating valve 102, a third digital display pressure regulating valve 103 and a high-frequency pneumatic solenoid valve 11.

[0035] The feeding pot 1 includes a liquid guide channel 1A, an on-off valve 1B and a first valve core seat 1C provided on the liquid guide channel 1A. The lower end of the liquid guide channel 1A is connected to the first valve core seat 1C. The on-off valve 1B is used to control the tin liquid in the feeding pot 1 to enter the liquid storage pot 4.

[0036] The liquid storage pot 4 includes a longitudinal guide hole 41 with an upper opening provided on the bottom plate;

[0037] The spray pot 5 includes a countersunk hole 51 provided on the upper opening, a longitudinal liquid channel 52, a valve core seat 53, a movable cavity 54 and a longitudinal liquid outlet channel 55;

[0038] The spray pot cover 6 includes a cylindrical interface 61 and an air inlet pipe 62, and the air inlet pipe 62 is connected to the cylindrical interface 61;

[0039] The first float assembly 81 includes a first hollow float 811, an upper rod 812, an upper valve core 813, an upper limit rod 814, and a liquid level adjustment rod 815. The upper valve core 813 is in the shape of a truncated cone. The upper limit rod 814, the upper valve core 813, the upper rod 812, the first hollow float 811, and the liquid level adjustment rod 815 are arranged in this order. When the on-off valve 1B is open, the first float assembly 81 is used to automatically adjust the tin liquid level in the liquid storage pot.

[0040] The second float assembly 82 includes an upper sliding rod 821, a second hollow float 822, a valve stem 823, a valve core 824 and a head 825. The valve core 824 is in a truncated cone shape.

[0041] The feeding pot 1 and the liquid storage pot 4 are arranged up and down and sealed, the feeding pot cover 2 and the feeding pot 1 are detachable and connected to the first digital pressure regulating valve 101, and nitrogen is passed into the feeding pot 1 through the first digital pressure regulating valve 101; the liquid level regulating rod 815 is clearance-matched with the longitudinal guide hole 41, the first hollow float 811 is located in the liquid storage pot 4, the upper rod 812 is clearance-matched with the inner cavity of the first valve core seat 1C, and the upper valve core 813 is matched with the first valve core seat 1C; the spray pot 5 is arranged parallel to the liquid storage pot 4 and in series; the flexible diaphragm 7 is arranged in the counterbore 51, the cylindrical interface 61 is inserted into the counterbore 51, and the upper end of the spray pot cover 6 is fitted with the upper end of the spray pot 5; the head 825 is arranged in the movable cavity 54 to fix the flexible diaphragm 7, the valve stem 823 is clearance-matched with the longitudinal liquid channel 52, and the valve core 824 is opposite to the valve core seat 53; the upper sliding rod 821 is fixed to the flexible diaphragm 7 and extends into the air inlet pipe 62. When the high-frequency pneumatic solenoid valve 11 is in operation, nitrogen flows through the air inlet pipe 62, the gap between the upper sliding rod 812 and the air inlet pipe, and enters the spray pot on the flexible diaphragm 7, thereby driving the flexible diaphragm 7. The second float assembly 82 moves downward, causing the nozzle 9 to spray liquid solder balls. Then, under the action of the buoyancy of the tin liquid and the flexible diaphragm, the second float assembly 82 moves upward and resets. The nozzle 9 is located at the lower end of the vertical liquid outlet channel 55. The second digital pressure regulating valve 102, the high-frequency pneumatic solenoid valve 11, and the air inlet pipe 62 are connected in sequence. The high-frequency pneumatic solenoid valve 11 controls the vertical movement of the flexible diaphragm 7 and the second float assembly, thereby controlling the interval between the liquid solder balls being sprayed from the nozzle. The third digital pressure regulating valve 103 is connected to the spray pot 5. The first electric heating coil 31 surrounds the feeding pot 1 and the liquid storage pot 4, while the second electric heating coil 32 surrounds the spray pot 5.

[0042] As a further aspect of the present invention: the upper sliding rod 821 is sealedly connected to the flexible diaphragm 7, and the flexible diaphragm 7 is provided with an axial hole;

[0043] The flexible diaphragm 7 at the axis hole is engaged with the annular groove; the flexible diaphragm 7 and the upper sliding rod 821 move up and down together.

[0044] As a further feature of the present invention, a series pipe 12 is also included. The liquid storage pot 4 and the spray pot 5 are respectively provided with connecting holes. Both ends of the series pipe 12 are plugged into and sealed with the connecting holes. During use, the liquid levels of the tin liquid in the liquid storage pot and the spray pot are on the same plane, and the nitrogen in the spray pot enters the liquid storage pot.

[0045] As a further feature of the present invention, the first hollow float 811 and the second hollow float 822 are both spherical.

[0046] As a further step of the present invention: the upper open end of the feeding pot 1 is provided with an annular plug-in groove 1D;

[0047] The feeding pot cover 2 is provided with an annular sealing cylinder 21 , which fits in with the upper opening of the feeding pot 1 , and the annular sealing cylinder 21 is inserted into the annular plug-in groove 1D.

[0048] As a further aspect of the present invention: the liquid guiding channel 1A includes an upper channel 1A1, a control chamber 1A2, a lower channel 1A3, a radial sealing channel 1A4, and a threaded chamber 1A5. One end of the radial sealing channel 1A4 and the lower channel 1A3 are in a straight line and are respectively connected to the control chamber 1A2. The connection point between the control chamber 1A2 and the lower channel 1A3 is a switch valve core seat.

[0049] The control part 13 includes a frustum valve core part 131, a sealing valve stem part 132, an external thread part 133 and a driving part 134.

[0050] The frustoconical valve core portion 824 cooperates with the switch valve core seat, the sealing valve stem portion 823 and the radial sealing channel 1A4 are slidably matched and sealed, and the external threaded portion 133 and the threaded cavity 1A5 are screwed together; the switch valve core seat, the radial sealing channel, the threaded cavity and the control member constitute the switch valve 1B; the control member 13 is rotated to realize the connection or cutoff of the feeding pot and the liquid storage pot.

[0051] The feeding pot 1, the feeding pot cover 2, the liquid storage pot 4, the spray pot 5 and the spray pot cover 6 are made of high-temperature resistant materials.

[0052] The series pipe 12 is made of stainless steel.

[0053] Example 2

[0054] like Figure 3 As shown, a liquid solder ball spot welding machine includes a machine base 14, a three-axis servo positioning module 15, a frame 16, a solder pad seat 17 provided on the three-axis servo positioning module and the above-mentioned spray liquid solder ball welding assembly;

[0055] The frame 16 is fixed to the base, the liquid solder ball welding assembly is set on the frame 16, and the three-axis servo positioning module 15 is set on the base. The nozzle opening faces downward, and the liquid solder ball falls directly on the welding point;

[0056] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and scope of the present invention. For example, partial modifications, such as changing the shape and structure of the second float assembly 82 and adding a spring to utilize the upward force of the spring to replace the buoyancy of the tin liquid, can also achieve the objectives of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A liquid solder ball spraying assembly, characterized by: It includes a feeding pot with an upper opening, a feeding pot cover, a first electric heating ring, a liquid storage pot with an upper opening, a spray pot with an upper opening, a spray pot cover, a flexible diaphragm, a second electric heating ring, a first float assembly, a second float assembly, a nozzle, a first digital display pressure regulating valve, a second digital display pressure regulating valve, a third digital display pressure regulating valve and a high-frequency pneumatic solenoid valve. The feeding pot includes a liquid guide channel, a switch valve and a first valve core seat. The liquid storage pot includes a longitudinal guide hole provided on the bottom plate; The spray pot includes a sink hole, a longitudinal liquid channel, a valve core seat, a movable cavity and a longitudinal liquid outlet channel; The spray pot cover includes a cylindrical interface and an air inlet pipe. The first float assembly includes a first hollow float, an upper rod, an upper valve core, an upper limit rod and a liquid level regulating rod. The second float assembly includes an upper sliding rod, a second hollow float, a valve stem, a valve core and a head. The feeding pot and liquid storage pot are arranged one above the other and sealed. The feeding pot lid and the feeding pot are removably connected and connected to a first digitally displayed regulating valve. The liquid level regulating rod has a clearance fit within the longitudinal guide hole, the first hollow float is located within the liquid storage pot, the upper rod has a clearance fit within the first valve core seat, and the upper valve core engages with the first valve core seat. The spray pot and liquid storage pot are arranged parallel and in series. A flexible diaphragm is located within the counterbore, the cylindrical interface is inserted into the counterbore, and the upper end of the spray pot lid is in contact with the upper end of the spray pot. The head is located within the movable cavity, the valve stem has a clearance fit within the longitudinal liquid passage, and the valve core is opposite the valve core seat. The upper sliding rod is fixed to the flexible diaphragm and extends into the air inlet pipe, and the nozzle is located at the lower end of the longitudinal liquid outlet passage. A second digitally displayed pressure regulating valve, a high-frequency pneumatic solenoid valve, and the air inlet pipe are connected in sequence. A third digitally displayed pressure regulating valve is connected to the spray pot. A first electric heating coil surrounds the feeding pot and liquid storage pot, while a second electric heating coil surrounds the spray pot.

2. The liquid solder ball welding assembly according to claim 1, characterized in that: The upper fixing rod is provided with an annular groove, and the flexible diaphragm is provided with an axial hole; The flexible diaphragm at the axis hole is engaged with the annular groove; the flexible diaphragm and the upper sliding rod move up and down together.

3. The liquid solder ball welding assembly according to claim 1, characterized in that: It also includes a series pipe, the liquid storage pot and the spray pot are respectively provided with a connecting hole, and both ends of the series pipe are plugged into the connecting holes and sealed.

4. The liquid solder ball welding assembly according to claim 1, characterized in that: The first hollow float and the second hollow float are respectively spherical.

5. The liquid solder ball welding assembly according to claim 1, characterized in that: The upper open end of the feeding pot is provided with an annular plug-in groove; An annular sealing cylinder is provided on the feeding pot cover, the feeding pot cover is fitted with the upper opening of the feeding pot, and the annular sealing cylinder is inserted into the annular plug-in groove.

6. The liquid solder ball welding assembly according to claim 1, characterized in that: The liquid guide channel includes an upper channel, a control chamber, a lower channel, a radial sealing channel and a threaded chamber. The radial sealing channel and the lower channel are in a straight line and are respectively connected to the control chamber. The connection point between the control chamber and the lower channel is a switch valve core seat. The control part includes a frustum valve core, a sealing valve stem, an external thread part and a driving part. The frustoconical valve core part cooperates with the switch valve core seat, the sealing valve stem part and the radial sealing channel are slidably matched and sealed, and the external thread part and the threaded cavity are screwed together; the switch valve core seat, radial sealing channel, threaded cavity and control component constitute the switch valve.

7. The liquid solder ball welding assembly according to claim 1, characterized in that: The feeding pot, the feeding pot cover, the liquid storage pot, the spray pot and the spray pot cover are made of high-temperature resistant materials.

8. The liquid solder ball welding assembly according to claim 3, characterized in that: The series pipes are made of stainless steel pipe material.

9. A liquid solder ball spot welding machine, characterized in that: The invention comprises a liquid solder ball welding assembly as claimed in any one of claims 1 to 8.

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