A soldering device for quantitative soldering of tin wire

Abstract

The present invention provides a tin wire quantitative welding device, including a tin supply component, a quantitative tin cutting component and a welding component; the quantitative tin cutting component includes a second bracket, a cutting drive mechanism is provided in the second bracket, the output end of the cutting drive mechanism is connected to a translation plate, a push rod is fixed at the bottom of the translation plate, a cutting knife is fixed at one end of the push rod, a vent hole is provided in the cutting knife, a knife seat is fixed in the second bracket, a cutting channel is provided in the knife seat, the push rod is slidably connected in the cutting channel, a quantitative cutting die is fixed at one end of the knife seat, a tin wire channel and a die-cutting hole are provided in the quantitative cutting die, and the cutting knife is slidably connected in the die-cutting hole; a stripping drive mechanism is provided in the second bracket, a separation rod is fixed at the output end of the stripping drive mechanism, a stripping groove is provided on the cutting knife, and a stripping channel is provided in the knife seat. The present invention can cut and obtain quantitative tin wire segments, ensure that the size of each solder joint is consistent, and the welding precision is high.

Description

Technical Field

[0001] The invention relates to a welding device, and in particular discloses a tin wire quantitative welding device. Background Art

[0002] Welding, also known as fusion, is a processing technology and connection method that uses heating, high temperature or high pressure to make two workpieces of the same or opposite sex produce atomic bonding. The principle of brazing is often used in the assembly and connection of electronic products. That is, the base material does not melt, but is heated and melted by the filler material. The filler material generates wetting force (surface tension) on the base material to fill the gap and reacts with the base material to obtain a metallurgical welded joint to achieve the purpose of connecting the assembly.

[0003] In the existing electronic product welding technology, a welding device with continuous tin wire supply is usually used. The tin wire body is sent to the welding station under the drive of the tin feeder, and then the tin wire body is melted by the welding component located at the welding station to achieve welding. The welding component can be an electric soldering iron or a laser focusing lens connected to a laser generator. Since the welding component acts on the continuous tin wire body, it is affected by various factors, and the actual melting length of the tin wire body is inconsistent each time, which easily causes inconsistent solder joints, low welding precision, and poor solder joint quality, affecting the performance of the processed electronic products, especially for microelectronic products with high precision requirements. Summary of the invention

[0004] Based on this, it is necessary to provide a tin wire quantitative welding device to address the existing technical problems, which can cut a quantitative amount of tin wire and perform welding processing on it with high welding accuracy.

[0005] In order to solve the problems of the prior art, the present invention discloses a quantitative soldering device for tin wire, comprising a tin supply component, a quantitative tin cutting component and a soldering component, wherein the tin supply component comprises a first bracket, in which a tin supply roller and a tin feeder are arranged; the quantitative tin cutting component comprises a second bracket, in which a cutting drive mechanism is arranged, the output end of the cutting drive mechanism is connected to a translation plate, a push plate is fixed to the bottom of the translation plate, a push rod is fixed to one end of the push plate, a cutting knife is fixed to the end of the push rod away from the push plate, a vent hole is arranged in the cutting knife, a vent channel is arranged in the push rod, one end of the vent channel is connected to the vent hole, and the other end of the vent channel is connected to two connectors, and the two connectors are respectively connected to a vacuum generator and an inert gas supply In response to the machine, a knife seat is fixed in the second bracket, a cutting channel is provided in the knife seat, a push rod is slidably connected to the cutting channel, a quantitative cutting die is fixed to the end of the knife seat away from the translation plate, a vertically intersecting tin wire channel and a die-cutting hole are provided in the quantitative cutting die, the die-cutting hole is connected to the cutting channel, and the cutting knife is slidably connected to the die-cutting hole; a stripping drive mechanism is also provided in the second bracket, a separation rod is fixed to the output end of the stripping drive mechanism, a stripping clearance groove is provided on the cutting knife, a stripping channel connected to the die-cutting hole is provided in the knife seat, and the separation rod is slidably connected to the stripping channel; the welding assembly includes a third bracket, a laser focusing lens is provided in the third bracket, and the focus of the laser focusing lens is located at the end of the quantitative cutting die away from the knife seat.

[0006] Furthermore, the tin feeder includes a tin feeding motor, a feed limit plate and a discharge limit plate, the feed limit plate and the discharge limit plate are respectively located on both sides of the output shaft of the tin feeding motor, a limit wheel is provided between the feed limit plate and the discharge limit plate, a feed guide hole is provided in the feed limit plate, and a discharge guide hole is provided in the discharge limit plate, and the connecting line between the feed guide hole and the discharge guide hole is located between the limit wheel and the output shaft of the tin feeding motor.

[0007] Furthermore, a first sensor is provided in the first bracket, and a detection end of the first sensor faces the translation plate.

[0008] Furthermore, a second sensor is provided in the first bracket, and a detection end of the second sensor is directly facing an end of the quantitative cutting die away from the knife seat.

[0009] Furthermore, the cutting drive mechanism includes a cutting motor, a screw is fixed to the output end of the cutting motor, an internal thread sleeve is connected to the external thread of the screw, the internal thread sleeve is fixedly connected to the translation plate, and the translation plate is slidably connected to the second bracket.

[0010] Furthermore, the translation plate is connected to at least three linear bearings, each of which is connected to a guide rod, and the guide rod is fixed in the second bracket.

[0011] Furthermore, a first spring is connected between the push plate and the knife seat.

[0012] Furthermore, a semicircular positioning groove is provided at one end of the cutting knife away from the push rod.

[0013] Furthermore, a second spring is disposed on the outer sleeve of the separation rod, and the second spring is connected between the knife seat and the output end of the stripping drive mechanism.

[0014] Furthermore, the stripping drive mechanism is a cylinder or a motor.

[0015] The beneficial effects of the present invention are as follows: the present invention discloses a quantitative tin wire welding device, which is provided with a special quantitative tin cutting component, and can cut the tin wire body to obtain quantitative tin wire segments, and can ensure that the size of the solder joints obtained by each welding is consistent, and can significantly reduce welding errors. The tin wire segments can be stably and reliably pushed away from the cutting knife to avoid adhesion to the cutting knife due to the action of flux, thereby affecting the accuracy of subsequent welding processing. During welding, it is ensured that the tin wire segments can form solder joints with regular shapes and uniform sizes after being melted, and the welding accuracy is high, which can effectively meet the processing requirements of modern microelectronic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a bottom view structural schematic diagram of the present invention.

[0018] Figure 3 The initial state of the present invention is along Figure 2 Schematic diagram of the cross-sectional structure along the line A-A'.

[0019] Figure 4 For the present invention, the cutting and stripping process is carried out along Figure 2 Schematic diagram of the cross-sectional structure along the line A-A'.

[0020] Figure 5 For the present invention Figure 3 Schematic diagram of the enlarged structure of B.

[0021] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure of C in the figure.

[0022] Figure 7 It is a schematic diagram of the exploded structure of the quantitative tin cutting component in the present invention.

[0023] Figure 8The figure is a schematic diagram of the decomposed structure of the quantitative tin cutting assembly in the present invention from another perspective. The figure marks are: tin supply assembly 10, first bracket 11, tin supply roller 12, tin feeder 13, tin feeding motor 14, feed limit plate 15, feed guide hole 151, discharge limit plate 16, discharge guide hole 161, limit wheel 17, quantitative tin cutting assembly 20, second bracket 21, first sensor 211, second sensor 212, cutting drive mechanism 22, cutting motor 221, screw 222, internal thread sleeve 223, translation plate 23, linear bearing 231, guide rod 232, push plate 24, first spring 241, push rod 25, air passage 251, connector 252, cutting knife 26, air hole 261, stripping hole 262, positioning groove 263, knife seat 27, cutting passage 271, stripping passage 272, quantitative cutting die 28, tin wire passage 281, die-cutting hole 282, stripping drive mechanism 29, separation rod 291, second spring 292, welding assembly 30, third bracket 31, laser focusing lens 32, tin wire body 40, tin wire segment 41. DETAILED DESCRIPTION

[0024] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] refer to Figures 1 to 8 .

[0026] The embodiment of the present invention discloses a quantitative tin wire welding device, comprising a tin supply component 10, a quantitative tin cutting component 20 and a welding component 30, wherein the tin supply component 10 comprises a first bracket 11, wherein a tin supply roller 12 and a tin feeder 13 are provided in the first bracket 11, wherein a wound tin wire roll is stored in the tin supply roller 12, and a tin wire body 40 of the tin wire roll passes through the tin feeder 13 to reach a processing station of the quantitative tin cutting component 20; the quantitative tin cutting component 20 comprises a second bracket 21, wherein a cutting drive mechanism 22 is provided in the second bracket 21, wherein an output end of the cutting drive mechanism 22 is connected to a translation plate 23, wherein a push plate 24 is fixed to the bottom of the translation plate 23, wherein the push plate 24 is slidably connected to the second bracket 21, and the push plate 24 is away from one side of the translation plate 23. A push rod 25 is fixed at one end of the push rod 25, and a cutting knife 26 is fixed at one end of the push rod 25 away from the push plate 24. A vent hole 261 is provided in the cutting knife 26. A ventilation channel 251 is provided in the push rod 25. One end of the ventilation channel 251 is connected to the vent hole 261, and the other end of the ventilation channel 251 is connected to two connectors 252. The two connectors 252 are respectively connected to a vacuum generator and an inert gas supply machine. The inert gas supply machine can be an inert gas generator or an inert gas tank with an electromagnetic valve. The inert gas can be nitrogen, but is not limited to nitrogen. A knife seat 27 is fixed in the second bracket 21. A cutting channel 271 is provided in the knife seat 27. The push rod 25 is slidably connected to the cutting channel 271. The knife seat 27 is far away from the push plate 24. A quantitative cutting die 28 is fixed to one end of the translation plate 23, and the quantitative cutting die 28 is located on one side of the tin feeder 13. A tin wire channel 281 and a die-cutting hole 282 that intersect vertically are provided in the quantitative cutting die 28. The tin wire body 40 is arranged through the tin wire channel 281. Preferably, a waste receiving tube is connected to the side of the tin wire channel 281 away from the tin feeder 13, which is used to receive the tin wire waste located at the end of the tin wire segment 41 away from the tin supply roller 12 after cutting. The die-cutting hole 282 is connected to the cutting channel 271, and the cutting knife 26 is slidably connected to the die-cutting hole 282. The shear force formed by the cutting knife 26 and the die-cutting hole 282 can cut the tin wire body 40 in the tin wire channel 281 to obtain a length and a length of the die-cutting hole. 282, the width of the tin wire segment 41 matches, so as to achieve quantitative cutting; the second bracket 21 is also provided with a stripping drive mechanism 29, the output end of the stripping drive mechanism 29 is fixed with a separation rod 291, the cutting knife 26 is provided with a stripping clearance groove 262 for making way for the separation rod 291, the groove bottom of the stripping clearance groove 262 forms an angle with the cutting knife 26, and the knife seat 27 is provided with a stripping channel 272 connected to the die-cutting hole 282, the stripping channel 272 is parallel to the groove bottom of the stripping clearance groove 262, the output end motion trajectory of the stripping drive mechanism 29 is collinear with the central axis of the stripping channel 272, the separation rod 291 is slidably connected to the stripping channel 272, and the separation rod 291 can be slidably connected to the stripping clearance groove 262;The welding assembly 30 includes a third bracket 31, in which a laser focusing lens 32 connected to a laser generator is disposed. The focus of the laser focusing lens 32 is located on the quantitative tin wire segment 41 cut out by the end of the quantitative cutting die 28 away from the knife seat 27. Preferably, the laser focusing lens 32 is located above the quantitative cutting die 28. ;

[0027] When applied, in the initial state, such as Figure 3 , Figure 5 As shown in FIG. 2 , the welding station is arranged below the end of the quantitative cutting die 28 away from the knife seat 27, that is, the focus of the laser focusing lens 32 is located on the welding station, the tin supply device transfers the tin wire body 40 in the tin supply roller 12 to the tin wire channel 281, and the cutting knife 26 is located on one side of the tin wire body 40 in the tin wire channel 281. The external vacuum generator evacuates the air permeable channel 251, and the vent hole 261 sucks the tin wire body 40 tightly. When the tin wire segment 41 is obtained by cutting and stripping, as shown in FIG. Figure 4 , Figure 6 As shown in FIG. 2 , the cutting drive mechanism 22 drives the translation plate 23 to translate close to the knife seat 27, and the push plate 24, the push rod 25 and the cutting knife 26 follow to realize translation movement, and the cutting knife 26 translates and passes out of the die-cutting hole 282. Under the shear force between the cutting knife 26 and the die-cutting hole 282, the tin wire body 40 is cut to obtain a tin wire segment 41 with a length equal to the width of the die-cutting hole 282. The tin wire segment 41 is located on the side of the quantitative cutting die 28 away from the knife seat 27; the vacuum generator plane The air pressure of the air permeable channel 251 is balanced, and the inert gas supply machine delivers inert gas to the air permeable channel 251, which helps to remove the material. The air hole 261 loosens the tin wire segment 41, and the material removal drive mechanism 29 drives the separation rod 291 to move forward. The separation rod 291 moves forward through the material removal channel 272 and the material removal clearance groove 262, pushing the tin wire segment 41 at one end of the cutting knife 26 away from the cutting knife 26 and reaching the welding station, avoiding the tin wire segment 41 from adhering to the cutting knife 26 due to the action of the flux. The laser emitted by the laser generator is focused by the laser focusing lens 32 and reaches the tin wire segment 41 at the welding station, thereby welding a certain amount of the tin wire segment 41 in the target area. During the welding process, the inert gas supply machine continues to blow inert gas to the tin wire segment 41 through the air permeable channel 251 and the air hole 261, which can effectively prevent the tin wire segment 41 from being oxidized during the welding process and effectively protect the surface of the solder joint and the internal structure performance. After the welding is completed, the inert gas supply machine stops supplying inert gas.

[0028] In this embodiment, the tin feeder 13 includes a tin feed motor 14, a feed limit plate 15 and a discharge limit plate 16. The housing of the tin feed motor 14 is fixed in the first bracket 11. The feed limit plate 15 and the discharge limit plate 16 are respectively located on both sides of the output shaft of the tin feed motor 14. A limit wheel 17 rotatably connected to the first bracket 11 is provided between the feed limit plate 15 and the discharge limit plate 16. A feed guide hole 151 is provided in the feed limit plate 15, and a discharge guide hole 161 is provided in the discharge limit plate 16. The connecting line is located between the limiting wheel 17 and the output shaft of the tin feeding motor 14. Preferably, the extension line of the central axis of the feed guide hole 151 is located on the transmission surface of the limiting wheel 17, and the extension line of the central axis of the discharge guide hole 161 vertically passes through the output shaft of the tin feeding motor 14. After the tin wire body 40 of the wire head in the tin supply roller 12 passes through the feed guide hole 151, it is successively wound on the limiting wheel 17 and the output shaft of the tin feeding motor 14, and finally passes through the discharge guide hole 161 into the tin wire channel 281. The output shaft of the tin feeding motor 14 drives the tin wire body 40 wound thereon to move forward.

[0029] In this embodiment, a first sensor 211 is provided in the first bracket 11. Preferably, the first sensor 211 is a photoelectric sensor. The detection end of the first sensor 211 faces the translation plate 23. The first sensor 211 can detect the position of the translation plate 23 to monitor the cutting action, which can effectively improve the reliability of the cutting action.

[0030] In this embodiment, a second sensor 212 is provided in the first bracket 11. Preferably, the second sensor 212 is a photoelectric sensor. The detection end of the second sensor 212 is facing the end of the quantitative cutting die 28 away from the knife seat 27. The second sensor 212 can detect whether the tin wire segment 41 obtained after cutting is pushed away from the quantitative cutting die 28, thereby monitoring whether the cutting action is completed.

[0031] In this embodiment, the cutting drive mechanism 22 includes a cutting motor 221, a screw 222 is coaxially fixed to the output end of the cutting motor 221, the screw 222 is externally threadedly connected to an internal thread sleeve 223, the internal thread sleeve 223 is fixedly connected to the translation plate 23, the translation plate 23 is slidably connected to the second bracket 21, the translation plate 23 can only slide translationally under the restriction of the second bracket 21, so the internal thread sleeve 223 can only achieve translational motion, when the cutting motor 221 is working, the screw 222 rotates through the internal thread sleeve 223 to drive the translation plate 23 to achieve translational motion. The cutting drive mechanism 22 can also be a cutting cylinder or motor, the output end of the cutting cylinder or motor is directly connected to the translation, thereby driving the translation plate 23 to achieve translational motion.

[0032] Based on the above embodiment, the translation plate 23 is connected to at least three linear bearings 231, each linear bearing 231 is connected to a guide rod 232, the guide rod 232 is parallel to the moving trajectory of the translation plate 23, and the guide rod 232 is fixed in the second bracket 21, which can further limit the movement trajectory of the translation plate 23, thereby effectively improving the reliability of the overall action.

[0033] In this embodiment, a first spring 241 is connected between the push plate 24 and the knife seat 27 . The first spring 241 is retracted and retracted in a direction parallel to the movement direction of the cutting knife 26 , which can effectively improve the stability of the cutting action of the cutting knife 26 on the tin wire body 40 .

[0034] In this embodiment, a semicircular positioning groove 263 is provided at one end of the cutting knife 26 away from the push rod 25, and the stripping and giving way groove 262 passes through the positioning groove 263, which can ensure that the separation rod 291 can effectively separate the tin wire segment 41 and the positioning groove 263. The positioning groove 263 matches the tin wire body 40, and the groove wall of the positioning groove 263 can just be tightly attached to the side of the tin wire body 40, which can effectively ensure the adsorption and positioning effect of the vent hole 261 on the tin wire body 40.

[0035] In this embodiment, a second spring 292 is provided on the outer sleeve of the separation rod 291, and the second spring 292 is connected between the knife seat 27 and the output end of the stripping drive mechanism 29. The second spring 292 is retracted and retracted along the movement direction of the separation rod 291, which can effectively improve the stability of the separation and stripping action realized by the tin wire segment 41.

[0036] In this embodiment, the stripping drive mechanism 29 is a cylinder or a motor.

[0037] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A soldering device for quantitative soldering of tin wire, characterized in that: It comprises a tin supply assembly (10), a quantitative tin cutting assembly (20) and a welding assembly (30), wherein the tin supply assembly (10) comprises a first bracket (11), wherein the first bracket (11) is provided with a tin supply roller (12) and a tin feeder (13); The quantitative tin cutting assembly (20) comprises a second bracket (21), wherein a cutting drive mechanism (22) is provided in the second bracket (21), wherein an output end of the cutting drive mechanism (22) is connected to a translation plate (23), a push plate (24) is fixed to the bottom of the translation plate (23), a push rod (25) is fixed to one end of the push plate (24), a cutting knife (26) is fixed to one end of the push rod (25) away from the push plate (24), a vent hole (261) is provided in the cutting knife (26), a vent channel (251) is provided in the push rod (25), one end of the vent channel (251) is connected to the vent hole (261), and the other end of the vent channel (251) is connected to the Two connectors (252) are connected, and the two connectors (252) are respectively connected to a vacuum generator and an inert gas supply machine. A knife seat (27) is fixed in the second bracket (21), and a cutting channel (271) is provided in the knife seat (27). The push rod (25) is slidably connected in the cutting channel (271). A quantitative cutting die (28) is fixed at one end of the knife seat (27) away from the translation plate (23), and a vertically intersecting tin wire channel (281) and a die-cutting hole (282) are provided in the quantitative cutting die (28). The die-cutting hole (282) is communicated with the cutting channel (271), and the cutting knife (26) is slidably connected in the die-cutting hole (282); The second bracket (21) is also provided with a stripping drive mechanism (29), a separation rod (291) is fixed to the output end of the stripping drive mechanism (29), a stripping clearance groove (262) is provided on the cutting knife (26), a stripping channel (272) connected to the die-cutting hole (282) is provided in the knife seat (27), and the separation rod (291) is slidably connected to the stripping channel (272); The welding assembly (30) comprises a third bracket (31), a laser focusing lens (32) is provided in the third bracket (31), and the focal point of the laser focusing lens (32) is located at an end of the quantitative cutting die (28) away from the knife seat (27); A first sensor (211) is provided in the first bracket (11), and a detection end of the first sensor (211) faces the translation plate (23); A second sensor (212) is provided in the first bracket (11), and a detection end of the second sensor (212) is directly facing an end of the quantitative cutting die (28) away from the knife seat (27).

2. A soldering device for quantitative soldering of tin wire according to claim 1, characterized in that: The tin feeder (13) comprises a tin feed motor (14), a feed limit plate (15) and a discharge limit plate (16); the feed limit plate (15) and the discharge limit plate (16) are respectively located on both sides of the output shaft of the tin feed motor (14); a limit wheel (17) is provided between the feed limit plate (15) and the discharge limit plate (16); a feed guide hole (151) is provided in the feed limit plate (15); and a discharge guide hole (161) is provided in the discharge limit plate (16); a connecting line between the feed guide hole (151) and the discharge guide hole (161) is located between the limit wheel (17) and the output shaft of the tin feed motor (14).

3. A soldering device for quantitative soldering of tin wire according to claim 1, characterized in that: The cutting drive mechanism (22) comprises a cutting motor (221), the output end of the cutting motor (221) is fixed with a screw rod (222), the screw rod (222) is externally threadedly connected with an internal thread sleeve (223), the internal thread sleeve (223) is fixedly connected to the translation plate (23), and the translation plate (23) is slidably connected to the second bracket (21).

4. A soldering device for quantitative soldering of tin wire according to claim 3, characterized in that: The translation plate (23) is connected to at least three linear bearings (231), each of the linear bearings (231) is connected to a guide rod (232), and the guide rod (232) is fixed in the second bracket (21).

5. The device for soldering a tin wire in a fixed quantity according to claim 1, characterized in that: A first spring (241) is connected between the push plate (24) and the knife seat (27).

6. A soldering device for quantitative soldering of tin wire according to claim 1, characterized in that: A semicircular positioning groove (263) is provided at one end of the cutting knife (26) away from the push rod (25).

7. A soldering device for quantitative soldering of tin wire according to claim 1, characterized in that: The outer sleeve of the separation rod (291) is provided with a second spring (292), and the second spring (292) is connected between the knife seat (27) and the output end of the stripping drive mechanism (29).

8. A soldering device for quantitative soldering of tin wire according to claim 1 or 7, characterized in that: The stripping drive mechanism (29) is a cylinder or a motor.

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