阅读说明：本技术 一种焊线机用瓷嘴装置 (Ceramic nozzle device for wire bonding machine ) 是由 陶勇彬 于 2020-06-05 设计创作，主要内容包括：本发明涉及焊接设备技术领域,且公开了一种焊线机用瓷嘴装置,包括瓷嘴套,所述瓷嘴套的中部穿过有铜丝,所述瓷嘴套的上方且夹持铜丝有线夹装置,所述瓷嘴套的下方设置有工作台,所述瓷嘴套下方的一次设置有打火杆,包括瓷嘴套,所述瓷嘴套的中部穿过有铜丝,所述瓷嘴套的上方且夹持铜丝有线夹装置,所述瓷嘴套的下方设置有工作台。该焊线机用瓷嘴装置,通过瓷嘴套、密封塞、密封板的配合作用,使得滑动槽相对密封,在远离打火杆一侧的输气管道注入氮气下,使得氮气充满滑动槽后流速较慢,解决了现有的注入氮气方式,流速较大,电弧容易偏移造成烧球体积变小的问题,保证打火杆打火产生的电弧不会偏移,保证铜丝焊接效果。(The invention relates to the technical field of welding equipment, and discloses a porcelain nozzle device for a wire bonder, which comprises a porcelain nozzle sleeve, wherein a copper wire penetrates through the middle of the porcelain nozzle sleeve, a wire clamping device is arranged above the porcelain nozzle sleeve and used for clamping the copper wire, a workbench is arranged below the porcelain nozzle sleeve, a fire striking rod is arranged below the porcelain nozzle sleeve at one time, the porcelain nozzle sleeve comprises a porcelain nozzle sleeve, the copper wire penetrates through the middle of the porcelain nozzle sleeve, the wire clamping device is arranged above the porcelain nozzle sleeve and used for clamping the copper wire, and the workbench is arranged below the porcelain nozzle sleeve. This ceramic nozzle device for wire bonder, through the mating reaction of ceramic nozzle cover, sealing plug, closing plate, make the sliding tray relatively sealed, under the gas transmission pipeline who keeps away from striking sparks pole one side pours into nitrogen gas into, make the velocity of flow slower after nitrogen gas is full of the sliding tray, solved current injection nitrogen gas mode, the velocity of flow is great, the easy skew of electric arc causes the problem that the ball volume diminishes, the electric arc of guaranteeing to strike sparks pole and striking sparks and produce can not squint, guarantee copper wire welding effect.)

1. The utility model provides a porcelain mouth device for wire bonder, includes porcelain mouth cover (1), copper wire (2) have been passed at the middle part of porcelain mouth cover (1), the top of porcelain mouth cover (1) and centre gripping copper wire (2) have wire clamping device (3), the below of porcelain mouth cover (1) is provided with workstation (4), one time be provided with striking rod (5) of porcelain mouth cover (1) below, its characterized in that: the ceramic nozzle sleeve is characterized in that a sealing porcelain box (6) is movably sleeved on the outer surface of the lower portion of the ceramic nozzle sleeve (1), a sliding groove (7) is formed in the inner portion of one side of the sealing porcelain box (6) and matched with the sliding groove (7), a sealing plug (8) is installed in the sealing porcelain box (6) in a deep and matched mode through a fire striking rod (5), a sliding groove (9) is formed in the bottom of the inner portion of the sealing porcelain box (6), a hydraulic device (10) is fixedly installed in the inner portion of the sealing porcelain box (6) and located on one side of the sliding groove (9), a telescopic rod (11) is fixedly sleeved at one end of the hydraulic device (10), a sealing plate (12) is movably installed on the outer surface of the telescopic rod (11), the sealing plate (12) is matched with the sliding groove (7) in size, an air pipeline (13) is formed in the inner portion of one side, far away from the fire striking rod (5), of the ceramic nozzle sleeve (1), the upper portion of exhaust duct (14) separately is equipped with gas outlet groove (15) with porcelain nozzle sleeve (1) inner chamber intercommunication, the upper portion of porcelain nozzle sleeve (1) inner chamber and with gas outlet groove (15) symmetry cover be equipped with guide ring (16), circulation groove (17) have been seted up to the inside bottom of porcelain nozzle sleeve (1), circulation groove (17) intercommunication porcelain nozzle sleeve's (1) inner chamber and exhaust duct (14).

2. The nozzle device for wire bonding machine of claim 1, wherein: the sealing plate (12) is in an inverted L shape, and the protruding end of the sealing plate (912) is close to one side of the sparking rod (5).

3. The nozzle device for wire bonding machine of claim 1, wherein: the sliding groove (7) forms a closed environment under the combined action of the porcelain nozzle sleeve (1), the sealing plug (8) and the sealing plate (12), nitrogen injected into the sliding groove (7) in the gas transmission pipeline (13) is heated after ball burning, and the nitrogen expands four times or more.

4. The nozzle device for wire bonding machine of claim 1, wherein: the guide ring (16) is in a double-layer ring shape, the middle of the guide ring is connected with the support column, the outer surface of the inner ring of the guide ring (16) is in a conical shape, and the conical surface of the guide ring (16) faces upwards.

5. The nozzle device for wire bonding machine of claim 1, wherein: the exhaust pipeline (14) is communicated with the bottom of the ceramic nozzle sleeve (1) and symmetrically arranged with an outlet of the gas transmission pipeline (13), the exhaust pipeline (14) is respectively wound with a circle at the bottom and the top of the ceramic nozzle sleeve (1), and four holes are respectively arranged on the periphery of the exhaust pipeline (14) and respectively connected with the circulating groove (17) and the gas outlet groove (15).

Technical Field

The invention relates to the technical field of welding equipment, in particular to a ceramic nozzle device for a wire bonder.

Background

The bonding wire machine includes gold wire machine, aluminum wire machine, ultrasonic bonding wire machine, and the bonding wire machine mainly is applied to high-power device: the welding machine is used for realizing the surface welding of different media, and is a physical change process.

The existing ultrasonic wire welding machine firstly energizes a sparking rod to generate electric arc, burns a metal wire, then uses ultrasonic waves and heat energy to make the metal wire in long-time pressure contact with a lead frame, generates plastic deformation on the surface of metal welding, enables two media to achieve reliable contact, and forms a metal bond between two metal atoms under the action of atomic affinity through ultrasonic friction vibration, thereby realizing the welding of a gold wire lead.

Such wire bonding machines have the following disadvantages during use: the metal wire is burnt by the sparking rod, oxidation is easy to occur, so that the copper wire cannot be welded, the two gas conveying pipes are directly aligned to the ball burning part by the conventional equipment to output nitrogen, the nitrogen is not high in utilization rate and is easy to cause waste, and the directly sprayed nitrogen acts on the end part of the copper wire, so that electric arcs between the sparking rod and the copper wire are deviated, the size of the copper wire burnt ball cannot meet the requirement, the position of the copper wire is deviated, and welding deviation is caused; meanwhile, the bottom of the copper wire is subjected to ball burning, the temperature can reach thousands of degrees, the copper wire in the porcelain nozzle can be oxidized when the copper wire conducts heat to the upper part, the ball burning process of the lower part is influenced, and the ball burning cannot reach an ideal size.

Disclosure of Invention

The invention provides a ceramic nozzle device for a wire bonding machine, which has the advantages of saving nitrogen, being low in nitrogen flowing speed, good in ball burning anti-oxidation effect, preventing copper oxide from being generated in advance in the upper part of copper wires, ensuring the size of a ball, and solving the problems of input nitrogen flow dispersion, striking rod arc deflection, incapability of meeting the requirement on the size of the ball, and accelerated oxidation after the upper part conducts heat.

The invention provides the following technical scheme: the utility model provides a porcelain mouth device for wire bonder, includes porcelain mouth cover, the copper wire has been passed at the middle part of porcelain mouth cover, the wire clamp device has been put to the top of porcelain mouth cover and centre gripping copper wire, the below of porcelain mouth cover is provided with the workstation, a fire rod is put to porcelain mouth cover below, including porcelain mouth cover, the copper wire has been passed at the middle part of porcelain mouth cover, the wire clamp device has been put to porcelain mouth cover's top and centre gripping copper wire, porcelain mouth cover's below is provided with the workstation, a fire rod, its characterized in that are put to porcelain mouth cover below one being provided with: the outer surface of the lower part of the porcelain nozzle sleeve is movably sleeved with a sealing porcelain box, a sliding groove is formed in the sealing porcelain box in a matched manner, a sealing plug is arranged in the sealing porcelain box in a matched manner, a sliding groove is formed in the bottom of the sealing porcelain box, a hydraulic device is fixedly arranged in the sealing porcelain box and positioned on one side of the sliding groove, one end of the hydraulic device is fixedly sleeved with a telescopic rod, a sealing plate is movably arranged on the outer surface of the telescopic rod, the sealing plate is matched with the sliding groove in size, an air conveying pipeline is arranged in the porcelain nozzle sleeve far away from the ignition rod, an exhaust pipeline communicated with the sliding groove is arranged in the porcelain nozzle sleeve, an air outlet groove communicated with the inner cavity of the porcelain nozzle sleeve is separately arranged on the upper part of the exhaust pipeline, a guide ring is symmetrically sleeved on the upper part of the inner cavity of the porcelain nozzle sleeve and the air outlet groove, and a circulating groove is formed in the bottom inside the ceramic nozzle sleeve and is communicated with the inner cavity of the ceramic nozzle sleeve and the exhaust pipeline.

The sealing plate is inverted L-shaped, and the protruding end is close to one side of the sparking rod.

The sliding groove forms a closed environment under the combined action of the ceramic nozzle sleeve, the sealing plug and the sealing plate, nitrogen injected into the sliding groove in the gas transmission pipeline is heated after the ball is burnt, and the nitrogen expands four times or more.

The guide ring is in a double-layer ring shape, the middle of the guide ring is connected with the support column, the outer surface of the inner ring of the guide ring is in a conical shape, and the conical surface of the guide ring faces upwards.

Preferably, the exhaust pipeline is communicated with the bottom of the ceramic nozzle sleeve and symmetrically arranged with an outlet of the gas transmission pipeline, the exhaust pipeline is respectively wound by a circle at the bottom and the top of the ceramic nozzle sleeve, and four holes are respectively arranged on the periphery of the exhaust pipeline and respectively connected with the circulating groove and the gas outlet groove.

The invention has the following beneficial effects:

1. this ceramic nozzle device for wire bonder, through the mating reaction of ceramic nozzle cover, sealing plug, closing plate, make the sliding tray relatively sealed, under the gas transmission pipeline who keeps away from striking sparks pole one side pours into nitrogen gas into, make the velocity of flow slower after nitrogen gas is full of the sliding tray, solved current injection nitrogen gas mode, the velocity of flow is great, the easy skew of electric arc causes the problem that the ball volume diminishes, the electric arc of guaranteeing to strike sparks pole and striking sparks and produce can not squint, guarantee copper wire welding effect.

2. This ceramic nozzle device for bonding wire machine, through exhaust duct, go out the air duct, the cooperation installation of circulation groove, resume again after the exhaust duct diameter of exhaust duct and circulation groove junction narrows down, the nitrogen gas flow speed in the exhaust duct accelerates, produce the negative pressure attraction to the gas in the circulation groove, thereby make the gaseous top-down's of ceramic nozzle sleeve inner chamber flow, to going out air exhaust of air duct downwardly attracting partly, make the air current and the exhaust duct formation circulation of ceramic nozzle sleeve hole, carry out redox to the surface of copper wire upper portion, guarantee that the process of burning the ball of copper wire is intact.

Drawings

FIG. 1 is a schematic diagram of a structure of a copper wire before ball burning;

FIG. 2 is a schematic diagram of the structure of the copper wire after ball burning;

FIG. 3 is a schematic view of the welding structure of the present invention;

FIG. 4 is a schematic perspective view of a guide ring according to the present invention;

FIG. 5 is a schematic view of the exhaust duct and the circulation tank according to the present invention;

FIG. 6 is a perspective view of an exhaust duct according to the present invention;

FIG. 7 is a schematic view of a three-dimensional half-section structure of the magnetic seal box of the present invention;

fig. 8 is a perspective view of the sealing plate of the present invention.

In the figure: 1. a porcelain nozzle sleeve; 2. a copper wire; 3. a wire clamp device; 4. a work table; 5. a striking rod; 6. sealing the porcelain box; 7. a sliding groove; 8. a sealing plug; 9. a sliding groove; 10. a hydraulic device; 11. a telescopic rod; 12. A sealing plate; 13. a gas pipeline; 14. an exhaust duct; 15. an air outlet groove; 16. a guide ring; 17. and a circulation tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, a ceramic nozzle device for a wire bonder comprises a ceramic nozzle sleeve 1, a copper wire 2 penetrates through the middle of the ceramic nozzle sleeve 1, a wire clamping device 3 is arranged above the ceramic nozzle sleeve 1 and clamps the copper wire 2, a workbench 4 is arranged below the ceramic nozzle sleeve 1, a fire striking rod 5 is arranged below the ceramic nozzle sleeve 1 at one time, a sealing porcelain box 6 is movably sleeved on the outer surface of the lower part of the ceramic nozzle sleeve 1, a sliding groove 7 is formed in the inner part of one side of the sealing porcelain box 6 and matched with the sliding groove 7, a sealing plug 8 is arranged in the sealing porcelain box 6 in a matching manner when the fire striking rod 5 penetrates through the sealing porcelain box 6, a sliding groove 9 is formed in the bottom of the inner part of the sealing porcelain box 6, a hydraulic device 10 is fixedly installed inside the sealing porcelain box 6 and positioned on one side of the sliding groove 9, a telescopic rod 11 is fixedly sleeved on one end of the hydraulic device 10, a, the inside of ceramic nozzle sleeve 1 keeping away from one side of striking rod 5 has seted up gas transmission pipeline 13, the exhaust duct 14 with sliding tray 7 intercommunication is seted up to the inside of ceramic nozzle sleeve 1, exhaust duct 14's upper portion separately is equipped with the gas outlet groove 15 with the inner chamber intercommunication of ceramic nozzle sleeve 1, the upper portion of ceramic nozzle sleeve 1 inner chamber and with the gas outlet groove 15 symmetry cover be equipped with guide ring 16, circulation groove 17 has been seted up to the inside bottom of ceramic nozzle sleeve 1, circulation groove 17 intercommunication ceramic nozzle sleeve 1's inner chamber and exhaust duct 14.

Wherein, closing plate 12 is "L" shape of falling, 912's protrusion end is close to one side of striking sparks pole 5, through the "L" shape closing plate 12 that falls who sets up, make closing plate 12 in the in-process of removing sealed sliding tray 7 bottom, the bulge of closing plate 12 can support to push away copper wire 2 to the lateral buckling of striking sparks pole 5, make the bottom of copper wire 2 be close to the end of striking sparks pole 5, guarantee the effect of burning one's ball of copper wire 2, the bulge of closing plate 12 surpasses copper wire 2 simultaneously, 2 bottom surfaces of copper wire after buckling do not contact with closing plate 12, guarantee that the burning one's ball of copper wire 2 is complete.

Wherein, the sliding tray 7 forms the closed environment under the combined action of porcelain nozzle sleeve 1, the sealing plug 8, closing plate 12, the nitrogen gas that injects sliding tray 7 in the gas transmission pipeline 13 heats after burning the ball, nitrogen gas expansion fourfold and above, through the nitrogen gas after the thermal expansion, the inside formation high pressure environment of sliding tray 7, the nitrogen gas velocity of carrying exhaust duct 14 increases, the negative pressure suction effect to the inside gas of circulation groove 17 is strengthened, circulation groove 17 increases to the inner chamber suction of porcelain nozzle sleeve 1, thereby it drops to absorb the copper oxide that produces the copper wire 2 surface because copper wire 2 is close to with circulation groove 17, it is further, closing plate 12 removes the back of opening, high-pressure nitrogen gas rushes out, the residual impact to the air and the last welding of workstation 4 upper surface is walked away, guarantee that the ball that stretches out is not by oxidation, and guarantee the welding effect of copper wire.

Wherein, guide ring 16 is double-deck cyclic annular, the centre is connected by the support column, the surface of guide ring 16 inner ring is the taper, guide ring 16's conical surface is upwards, guide ring 16 through the setting, can block upwards flowing with the 15 exhaust nitrogen gas of air outlet groove, prevent that exhaust nitrogen gas from directly impacting copper wire 2, cause copper wire 2 to rock, lead to copper wire fever ball back offset, cause the unstable problem of welding, the ascending conical surface leads most nitrogen gas to the top of porcelain mouth cover 1, isolated air, prevent most nitrogen gas direct downward flow, collide repeatedly with 1 inner wall of porcelain mouth cover, cause rocking constantly of copper wire 2, guarantee the position determination of 2 bottom fever balls of copper wire, guarantee the welding effect.

Wherein, exhaust duct 14 link up in porcelain mouth cover 1 bottom, and set up with the export symmetry of gas transmission pipeline 13, and exhaust duct 14 is at porcelain mouth cover 1 bottom and top respectively around having the round, and all seted up four holes respectively all around and connect circulation groove 17 and air outlet groove 15 respectively, and 14 spirals through the exhaust duct who sets up for the upper and lower part air current of porcelain mouth cover 1 inner chamber can top-down circulate, and the surface of protection copper wire 2 is not by oxidation.

The working principle of the porcelain nozzle is as follows:

the copper wire 2 is installed inside the ceramic nozzle sleeve 1 and extends out of the bottom of the ceramic nozzle sleeve 1 by a certain length, at the moment, the wire clamp device 3 clamps the copper wire, under the pushing action of the L-shaped sealing plate 12, the extended copper wire 2 is bent to be close to the ignition position of the ignition rod 5 and ensure that the copper wire 2 is not in contact with the upper surface of the sealing plate 12, nitrogen is injected into the sliding groove 7 through the gas transmission pipeline 13, the input direction of the nitrogen is opposite to the bending end face of the copper wire 2, the nitrogen is fully distributed in the sliding groove 7, the flow rate is slow and is discharged through the exhaust pipeline 14, the flow rate of the intersection of the exhaust pipeline 14 and the circulating groove 17 is accelerated, suction is generated on the gas in the sliding groove 7, so that the gas in the matching cavity of the nozzle ceramic sleeve 1 and the copper wire 2 flows into the circulating groove 17, the nitrogen discharged from the gas outlet groove 15 is downwards sucked to form circulation, the electric arc is generated by electrifying the ignition rod 5, high temperature that the ball produced makes the nitrogen gas heating expansion in the sliding tray 7, nitrogen gas velocity of flow through exhaust duct 14 increases, the suction of circulation groove 17 to 2 surfaces of copper wire increases, can attract the cupric oxide that produces 2 surfaces of copper wire to drop, hydraulic means 10 work drives sliding tray 9 return, high-pressure nitrogen gas in the sliding tray 7 discharges, blow away the air of sealed porcelain case 6 bottom surfaces, strike the upper surface of workstation 4, remain the welding of last time and blow away, 1 moves down drive copper wire and workstation 4 contacts of porcelain mouth cover, weld under 4 ultrasonic vibration of workstation.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.