CN201140318Y

CN201140318Y - Thread cutting device of welding press

Info

Publication number: CN201140318Y
Application number: CNU2007201708855U
Authority: CN
Inventors: 梁杰
Original assignee: SHENZHEN CHUANGWEIXING AUTOMATIC EQUIPMENT Co Ltd
Current assignee: Shenzhen Chuangwei star Automation Equipment Co.,Ltd.; Shenzhen Shunyu Automation Equipment Co ltd
Priority date: 2007-11-19
Filing date: 2007-11-19
Publication date: 2008-10-29
Anticipated expiration: 2017-11-19

Abstract

The utility model provides a wire cutting device of a press welder, which comprises a cantilever, a rotation shaft, a protruded cantilever lever and a cutter, wherein the cantilever is provided with an electromagnetic solenoid coil mounting panel and an adjusting screw A, an electromagnetic solenoid coil is provided on the electromagnetic solenoid coil mounting panel, the long arm of the protruded cantilever lever is provided with a rolling bearing, the electromagnetic solenoid coil is tangent and contacted with the rolling bearing, and the cutter is provided on a cutter base. The wire cutting device has simple assembly, and simple forward and backward adjustment of the cutter, wherein the cutter can cut a welding wire vertically, the welding wire has uniform force, and the head of the cut welding wire is bent downwards at the homing position, thereby preventing the sideward motion of the tail wire of the cut welding wire to prevent affecting the next welding point, and the welding wire is cut by the cutter after the welding to avoid tensioning the welding wire and avoid lifting up the welding point, thereby eliminating the bad effect on the next welding.

Description

The press welder thread cutter

Technical field

The utility model relates to press welder related accessory field, relates in particular to a kind of press welder thread cutter.

Background technology

At present, press welder is widely used in the wire bonds of electronic devices and components, integrated circuit etc.Press welder generally comprises body, casing, shift mechanism, head and operating-controlling mechanism etc., there is not cutter mechanism, after each welding, the disconnection of sealing wire is by the plumb joint part, sealing wire is pulled apart in the luffing bar action that makes progress just, and breaking tenacity can make solder joint be pulled up to cause rosin joint or not weld, and also has buttock line wild effect such as cause different in size in addition, influence quality of welding spot, bring certain difficulty for welding next time.

Application number is that 200420014762.9 Chinese utility model patent discloses a kind of cutter mechanism that is used for the ultrasonic wire bonding machine, comprise cutter mechanism, knife drive mechanism, cutting knife resetting-mechanism and position-limit mechanism, wherein cutter mechanism comprises knife rest, knife bar, tool rest and blade; Knife bar adopts rotating shaft, and on knife rest, blade is fixed on the rotating shaft front end by tool rest by bearing fixing, and with the axis normal of rotating shaft; An angle is rotated in rotating shaft under the moment loading that swinging block produces, cause the cutting edge of blade to do cutting movement to lower swing, cuts off aluminium wire.Because the cutting edge of cutting knife is done cutting movement to lower swing, causes the aluminum steel discontinuity, and under the effect of cutting knife oscillatory forces, aluminum steel after the cutting is flapped toward a side, (give next time welding bring certain difficulty) influenced the effect of next welding, reduced efficient.In addition, the described position-limit mechanism complex structure of this utility model, production cost is higher.

The utility model content

For addressing the above problem, the purpose of this utility model is to provide a kind of press welder thread cutter.

For achieving the above object, the technical solution of the utility model is:

The press welder thread cutter comprises cantilever, rotating shaft, prominent shape cantilever lever and cutting knife, and described cantilever is provided with the o installing plate, and o is installed on the o installing plate;

Described cantilever is provided with adjustment screw A;

Described prominent shape cantilever lever is installed on the cantilever by rotating shaft, the one arm curl torsionspring is installed on the rotating shaft, the prominent long-armed end of shape cantilever lever contacts with Cutter apron is tangent, the prominent long-armed rolling bearing that is provided with of shape cantilever lever, and o contacts with described rolling bearing is tangent;

Sliding shoe is connected and installed on the cantilever by guide rail B, and Cutter apron is installed on the sliding shoe vertical wall by guide rail A, and the sliding shoe vertical wall is provided with adjustment screw B, and described adjustment screw B props up the cantilever sidewall;

Extension spring A one side is connected with cantilever, and opposite side is connected with the sliding shoe horizontal wall; Extension spring B one side is connected with prominent shape cantilever lever, and opposite side is connected with Cutter apron;

Cutting knife is located on the Cutter apron.

Described rolling bearing is installed in the prominent long-armed centre of shape cantilever lever by installation shaft.

Described adjustment screw A is two, lays respectively at the both sides of rotating shaft.

The long-armed end of described prominent shape cantilever lever has bearing groove, and rolling bearing is installed in the bearing groove by installation shaft, and described rolling bearing contacts with Cutter apron is tangent.

The tangent contact in plane, extension spring B place on described rolling bearing and the Cutter apron.

The utlity model has following advantage:

1. the distance between adjustment screw A end and prominent shape cantilever lever has determined the amplitude of fluctuation of prominent shape cantilever lever, therefore by screwing off the amplitude of fluctuation that just can regulate prominent shape cantilever lever on the adjustment screw A, but promptly regulate the distance that cutting knife moves up and down, to compare the utility model position-limit mechanism simple with the position-limit mechanism of prior art, assemble easyly, production cost is low;

2. easy to adjust before and after the cutting knife, just can regulate relative position between cutting knife and the chopper by the spinning in and out of adjustment screw B, reach the purpose of accurate control tangent line assurance buttock line unanimity;

3. Cutter apron is installed and is installed on the vertical wall of slip by guide rail A, when prominent shape cantilever lever drives Cutter apron is that guide is when moving vertically downward with guide rail A, cutting knife perpendicular cuts bonding wire, sealing wire is stressed evenly, bonding wire is cut off back bonding wire head and in situ is bent downwardly, one side it is askew to the shortcoming that influences next pad effect to have overcome sealing wire cut-out back buttock line;

4. after the welding action is finished, cut off bonding wire, overcome the shortcoming of pulling apart bonding wire and causing solder joint to be pulled up, eliminated harmful effect welding next time with cutting knife.

Description of drawings

Fig. 1 is the utility model press welder thread cutter perspective exploded view;

Fig. 2 is that the utility model press welder thread cutter and soldering tip are assembled together and face structural representation;

Fig. 3 is the utility model press welder thread cutter and the soldering tip right TV structure schematic diagram that is assembled together;

Fig. 4 is that cutting knife cuts off the preceding working state schematic representation of bonding wire;

Fig. 5 is that cutting knife cuts off the bonding wire working state schematic representation.

The primary clustering symbol description

1, o 2, adjustment screw A 3, cantilever

4, one arm curl torsionspring 5, rotating shaft 6, prominent shape cantilever lever

7, o installing plate 8, extension spring A 9, extension spring B

10, guide rail A 11, guide rail B 12, adjustment screw B

13, Cutter apron 14, cutting knife 15, chopper

16, soldering tip 17, sliding shoe 18, bonding wire

19, rolling bearing 20, installation shaft 21, bearing groove

22, cantilever sidewall 23, sliding shoe vertical wall 24, sliding shoe horizontal wall

25, plane, extension spring B place

The specific embodiment

See also Fig. 1, the press welder thread cutter, comprise cantilever 3, rotating shaft 5, prominent shape cantilever lever 6 and cutting knife 14, described cantilever 3 is provided with o installing plate 7, adjustment screw A2, distance between adjustment screw A end and prominent shape cantilever lever has determined the amplitude of fluctuation of prominent shape cantilever lever, therefore by screwing off the amplitude of fluctuation that just can regulate prominent shape cantilever lever on the adjustment screw A, can regulate the distance that cutting knife moves up and down, simple to operate.

O 1 is installed on the o installing plate 7, described prominent shape cantilever lever 6 long-armed middle places are provided with rolling bearing 19, o contacts with described rolling bearing is tangent, utilizes rolling bearing to reduce the wearing and tearing that the prominent shape cantilever lever of o bump produces.

Described prominent shape cantilever lever 6 is installed on the cantilever 3 by rotating shaft 5, prominent shape cantilever lever 6 long-armed ends have bearing groove 21, rolling bearing 19 is installed in the bearing groove 21 by installation shaft 20, described rolling bearing contacts with Cutter apron is tangent, when prominent shape cantilever lever is done certain radian motion, the friction that produces when the rotation of rolling bearing can reduce contact.

One arm curl torsionspring 4 is installed on the rotating shaft 5,, resets to reach when o outage back single-arm flexion torsion spring is rotated counterclockwise prominent shape cantilever lever.

Sliding shoe 17 is installed on the cantilever 3 by guide rail B 11, sliding shoe is that guide can be done side-to-side movement with guide rail B, extension spring A 8 one sides are connected with cantilever 3, opposite side is connected with sliding shoe horizontal wall 24, sliding shoe vertical wall 23 is provided with adjustment screw B 12, described adjustment screw B end props up cantilever sidewall 22, distance between sliding shoe vertical wall and cantilever sidewall is regulated by the spinning in and out of adjustment screw B, adjustment screw B precession, distance between sliding shoe vertical wall and cantilever sidewall increases, adjustment screw B screws out, and the distance between sliding shoe vertical wall and cantilever sidewall reduces.

The sliding shoe vertical wall outside is equipped with guide rail A 10, Cutter apron 13 is installed on the sliding shoe vertical wall by guide rail A 10, extension spring B 9 one sides are connected with the installation shaft of the long-armed installation rolling pulley of prominent shape cantilever lever, opposite side is connected with Cutter apron, after cutting knife cuts off bonding wire, extension spring B between prominent shape cantilever lever and Cutter apron is pulled upwardly Cutter apron, for tangent line is ready next time.

Cutting knife 14 is located on the Cutter apron 13.

See also Fig. 2 to 5, when the press welder thread cutter uses and soldering tip 16 be fixed together by screw, move downward after o 1 energising, because o 1 is tangent with the rolling bearing 19 that prominent shape cantilever lever 6 middle parts are provided with, the moving downward of o drives prominent shape cantilever lever and does around rotating shaft 5 and turn clockwise, the rotation amplitude of prominent shape cantilever lever is by the distance decision between adjustment screw A end and prominent shape cantilever lever, therefore by screwing off the amplitude of fluctuation that can regulate prominent shape cantilever lever on the adjustment screw A;

Plane 25, extension spring B place is tangent on rolling bearing of installing in the prominent shape cantilever lever long arm end bearing groove 21 19 and the Cutter apron 13, Cutter apron is installed on the sliding shoe vertical wall by guide rail A, and the drive Cutter apron that turns clockwise of prominent shape cantilever lever is that guide is done motion vertically downward with guide rail A;

Bonding wire 18 comes out from the line bucket of soldering tip, passes the aperture on the luffing bar, through wire clamp, passes chopper 15 to cutting knife 14 places, and chopper is pushed down bonding wire, and when Cutter apron moved vertically downward, cutting knife cut off bonding wire; After cutting knife cuts off bonding wire, chopper 15 lifts, take away bonding wire 18, extension spring B between prominent shape cantilever lever and Cutter apron is pulled upwardly Cutter apron, for tangent line is ready next time, cutting knife perpendicular cuts bonding wire, sealing wire is stressed evenly, bonding wire is cut off back bonding wire head and in situ is bent downwardly, one side it is askew to the shortcoming that influences next pad effect to have overcome sealing wire cut-out back buttock line.

After the o outage, the one arm curl torsionspring of installing on the rotating shaft 4 is rotated counterclockwise prominent shape cantilever lever, resets to reach.

Cutter apron is fixed together by guide rail A and sliding shoe 17, extension spring A 8 one sides are connected with cantilever 3, opposite side is connected with sliding shoe horizontal wall 24, extension spring A gives outer restraining force of sliding shoe, could be against living the cantilever sidewall sliding shoe to Zola's adjustment screw B, if there is not the restraining force sliding shoe of spring is exactly a free mobile, adjustment screw B end props up cantilever sidewall 22, adjustment screw B can regulate the distance between sliding shoe and cantilever, sliding shoe 17 is installed on the cantilever 3 by guide rail B 11, sliding shoe is that guide can be done side-to-side movement with guide rail B, so the spinning in and out of adjustment screw B can regulate the position of cutting knife, promptly can regulate the distance between cutting knife and chopper, adjustment screw B precession, distance between cutting knife and chopper increases, and adjustment screw B screws out, and the distance between cutting knife and chopper reduces.

Claims

1, press welder thread cutter comprises cantilever, rotating shaft, prominent shape cantilever lever and cutting knife, and described cantilever is provided with the o installing plate, and o is installed on the o installing plate, it is characterized in that:

Described cantilever is provided with adjustment screw A;

Cutting knife is located on the Cutter apron.

2, press welder thread cutter according to claim 1 is characterized in that described rolling bearing is installed in the prominent long-armed centre of shape cantilever lever by installation shaft.

3, press welder thread cutter according to claim 1 is characterized in that described adjustment screw A is two, lays respectively at the both sides of rotating shaft.

4, press welder thread cutter according to claim 1 is characterized in that the long-armed end of described prominent shape cantilever lever has bearing groove, and rolling bearing is installed in the bearing groove by installation shaft, and described rolling bearing contacts with Cutter apron is tangent.

5, press welder thread cutter according to claim 1 is characterized in that tangent contact the in plane, extension spring B place on described rolling bearing and the Cutter apron.