KR101478565B1 - Press system with In die nut welding unit - Google Patents

Abstract

The present invention relates to a press system having a mold welding unit, an automatic nut supply device, and an automatic work loading device. According to the present invention, blanking extrusion, pressing, and welding processes for industrial members (vehicle panels and the like) for commercial production can be set at a series of cycles so that the process can be unmanned and automated, which provides operation swiftness and precision compared to the related art and replaces the existing manual processes with automated processes so that labor costs can be saved and productivity can be improved. In particular, an integral welding unit is provided in a press mold for mold compression molding so that the pressing and welding operations can be performed at the same time and processing steps can be reduced and productivity can be improved compared to the related art. According to the welding unit of the present invention, the nut is swiftly and precisely injected by the automatic supply device during the nut welding for the welding target in upper and lower molds and then inverter-type welding is performed so that welding errors can be reduced and operation efficiency can be improved.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a press system having a welding unit for a mold, an automatic feeding device for a nut,

The present invention enables the blanking drawing, pressing and welding processes of a mass-production industrial member (a panel of a vehicle, etc.) to be set in a series of cycles and proceed to an unmanned process by an automated method, In addition, the existing manual process is replaced with automation, and productivity is secured by labor cost reduction. In particular, a press-mold for press-molding the mold is integrally provided with a welding unit so that the pressing and welding operations are performed at the same time To a press system having a welding unit for a mold, an automatic feeding device for a nut, and a work automatic loading device.

In the welding unit of the present invention, when the nut is welded to the workpiece in the upper and lower molds, the nut can be quickly and precisely inserted into the automatic feeder and then welded by the inverter method. And the working efficiency is remarkably improved.

Generally, the conventional press apparatus is subjected to the following molding process, as described in the prior art of Korean Utility Model Publication No. 1999-007429.

First, the press forming process of a product having a flange portion is roughly formed by a drawing process, a material is drawn roughly against a mold, and then a drawing die is loaded on a lower die of a trimming die, while the upper die is lowered, The trimmed material is again separated from the trimming die and is loaded on the lower die of the flange forming die. While the upper die is lowered, the flange forming steel is used for flanging the edge of the upper die. .

However, in the conventional press forming process, a worker carries a nut to be welded by a separate welding machine in order to weld a nut or the like, so that a dual device is required, So that the productivity is greatly lowered.

In addition, the conventional manual welding process leads to a problem that the accuracy of welding is degraded and the quality of the product is deteriorated unless it is an experienced worker.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems described above, and its technical object is to set up a blanking drawing, pressing and welding process of an industrial member for mass production (such as a vehicle panel) in a series of cycles, In addition to providing quick and precise work for the previous work, it is formed to automate the existing manual processes and to secure productivity by labor cost reduction. Particularly, in the press mold for molding press molding, Wherein a welding unit is provided so that pressing and welding operations are performed at the same time, so that the work process for the previous welding operation is reduced, and productivity is greatly improved, and a press system having a welding unit for a mold, The purpose is to provide.

In order to accomplish the above object, the present invention provides a method of manufacturing a semiconductor device, comprising: forming a work zone having a concavo-convex shape on a surface of a mold constituting a pair of upper and lower parts, wherein the upper mold is formed so as to be raised and lowered with reference to the lower mold, A press (10) formed to additionally perform a post-operation including trimming and piercing with respect to the primary formed blank when the cylinder is lifted and pressed against the mold; A work loading device (20) provided with a robot having a transfer arm for injecting a primary formed blank into a press inner work zone through a numerical control set; A welding unit (30) provided at a desired one of the inside of the upper and lower molds and formed so as to be welded to the blank including a nut (N) at the time of press forming or pressing by a press; An automatic nut supply unit 40 formed at one side of the weld unit 210 and adapted to supply the nut N to the welding point C of the electrode module 213; So that a series of pressing and welding operations are performed automatically.

At this time, it is preferable that the press 10 further comprises a cutting means for machining the trim or piercing for each point set in the work zone.

Further, it is preferable that the press (10) is formed such that an up-down pressurizing cylinder is mounted on the upper mold top so as to press the lower mold.

The welding unit 30 is provided with a plurality of workpieces 111 and 121 having concave and convex shapes forming a pair on each surface of the press mold 100 facing the lower mold 110 and the upper mold 120, A welding transformer 211 is formed so as to allow the nut N to be welded to the workpiece P in the workpieces 111 and 121 at the time of compression molding or trimming by the pressing force The welding transformer 211 is formed to be electrically connected to a contact type current supply terminal 212 provided in the press mold 100 and a nut clamped in the work 111 and 121 is formed on one side of the current supply terminal 212 N is welded to the electrode module 213 so as to perform brazing while applying pressure.

The welding terminal unit 212 of the welding unit 210 includes a lower terminal arm 212-1 and a lower terminal arm 212-1 having different electrodes to energize the rated capacity connected from the welding transformer 211 to the electrode module 213, The upper terminal arm 212-2 is formed so that a pair of swivel tips 212-22 are coupled to the upper portion of the anti-rotation and shock absorption cylinder 212-21. Between the swivel tip 212-22 and the cylinder 212-21 is provided a point holder 212-23 and a clamper 212-24 which are energized with the welding transformer 211 to make an electrical connection desirable.

The electrode module 213 of the welding part 210 is formed with a lower fixing plate 213-11 so as to be electrically connected to the lower terminal arm of the energizing terminal block, A lower electrode part 213-1 for coupling the lower electrode 213-13 to the upper end of the lower electrode body 213-1; The upper electrode is formed to be coupled to the bottom surface of the upper electrode body 213-22. The upper electrode body is connected to the wedge- 213-231 of the cylinder body 213-24 having the pressure cylinder 213-241 and the guide shaft 213-242, An upper electrode portion 213-2 to be coupled to the upper electrode portion 213-2; .

At this time, it is preferable that the fixing fingers are formed so as to chamfer upper chamfer 224-2 facing each other so as to correspond to the wedge-shaped guide end of the upper electrode 213-2 and to separate the fixing fingers during downward pressing .

In addition, it is preferable that the nut automatic feeding part 220 sequentially arranges the nuts introduced through the hopper through the heat-conducting kit, and then supplies the nut to the target point of the press through the feed line.

The automatic nut feeder 220 includes a feeder cylinder 221 having a cylinder rod 221-1 for performing automatic feeding of the nut N; A pusher 222 coupled to the front of the cylinder rod of the feeder cylinder; A feed pipe 223 formed so that the pusher enters the end where the nut is discharged and the nut that has entered through the branch pipe 223-1 is discharged to the welding point by the pusher interlocking with the feeder cylinder; A plurality of stationary fingers (224) having a bite groove (224-1) for fixedly supporting a nut located at the welding point; An elastic body 225-2 is engaged with a guide rod 225-1 that penetrates the fixed finger so that a plurality of opposing fixed fingers are symmetrically opposed to each other or are constantly in contact with each other so as to close or separate the fixed finger A support (225) formed to support the substrate; .

In addition, the work loading apparatus 20 may further include a work unloading device for conveying at one side thereof, so that when the work is completed inside the press, the blank is loaded through the transfer arm to the tray.

As described above, according to the present invention, the blanking drawing, pressing and welding processes of the industrial component for mass production (such as the panel of a vehicle) are set in a series of cycles and can proceed to an unmanned process by an automated method. In addition to providing precision and precision, the existing manual process is replaced by automation, and productivity is secured by the reduction of labor cost. Particularly, the press mold for press-molding of the mold is provided with a welding unit as a whole, So that it is possible to reduce the number of work processes for the previous time, thereby greatly improving the productivity.

In addition, the present invention relates to a welding unit which is integrally provided in a press mold for molding press molding, which reduces the work process for the previous welding work, thereby greatly improving the productivity. Particularly, The nut can be quickly and precisely inserted into the automated feeder and then welded by the inverter method, thereby improving the welding defect and significantly improving the working efficiency.

Figures 1 to 3 are schematic illustrations of a press system according to the present invention,
FIG. 4 is a view illustrating an example of a joined state of a press mold having an in-die welding unit according to the present invention,
5 is a view showing an example of a lower mold of a press mold according to the present invention,
6 is an illustration showing an upper mold of a press mold according to the present invention,
FIGS. 7 to 8 are views showing an example in which a weld portion according to the present invention is laid on upper and lower molds;
9 to 10 are views showing a welded portion of a welding unit according to the present invention,
11 to 17 are views showing an example of a welding portion and an automatic nut supply portion of a welding unit according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.

First, as shown in FIGS. 1 to 17, in the present invention, a work zone having a concavo-convex form is formed on the surface of a mold constituting a pair of upper and lower molds, and the upper mold is raised and lowered A press (10) configured to additionally perform a post-operation including trimming and piercing with respect to the primary molded blank when the upper mold is lifted and pressed against the lower mold; A work loading device (20) provided with a robot having a transfer arm for injecting a primary formed blank into a press inner work zone through a numerical control set; A welding unit (30) provided at a desired one of the inside of the upper and lower molds and formed so as to be welded to the blank including a nut (N) at the time of press forming or pressing by a press; An automatic nut supply unit 40 formed at one side of the weld unit 210 and adapted to supply the nut N to the welding point C of the electrode module 213; So that a series of pressing and welding operations are performed automatically.

At this time, it is preferable that the press 10 further comprises a cutting means for machining the trim or piercing for each point set in the work zone.

Further, it is preferable that the press (10) is formed such that an up-down pressurizing cylinder is mounted on the upper mold top so as to press the lower mold.

At this time, the present invention is characterized in that the workpiece 111, 121 in the form of concavo-convex forms one set on each face of the press mold 100 facing the lower mold 110 and the upper mold 120, Or a welding unit 200 for allowing the nut N to be welded to the workpiece P in the workpiece 111 or 121 at the time of trimming.

At this time, the welding unit 200 is formed with a welding transformer 211 to provide a set rated capacity (kva), and the welding transformer 211 is connected to the contact-type energizing terminal block 212 provided in the press mold 100 A welding part 210 having an electrode module 213 for performing brazing while pressing the nut N clamped in the work 111 and 121 is provided at one side of the electric terminal 212, ; An automatic nut supply unit 220 formed at one side of the weld unit 210 and adapted to supply the nut N to the welding point C of the electrode module 213; .

The welding terminal unit 212 of the welding unit 210 includes a lower terminal arm 212-1 and a lower terminal arm 212-1 having different electrodes to energize the rated capacity connected from the welding transformer 211 to the electrode module 213, (212-2) are formed.

The upper terminal arm 212-2 has a pair of swivel tips 212-22 coupled to the upper portion of the rotation preventing and shock absorbing cylinder 212-21, A point holder 212-23 and a clamper 212-24 that are energized with the welding transformer 211 are provided between the cylinder 212-21 and the cylinder 212-21 to make an electrical connection.

The electrode module 213 of the welding part 210 includes a lower electrode part 213-1 and an upper electrode part 213-2.

The lower electrode unit 213-1 is electrically connected to the lower terminal arm of the current-carrying terminal block to form a lower fixing plate 213-11. A lower electrode body 213- 12, and a lower electrode 213-13 is coupled to an upper end of the lower electrode body.

The upper electrode 213-2 is formed to have an upper electrode 213-21 so as to be opposed to the lower electrode part in the longitudinal direction and the upper electrode 213-22 to be coupled to the lower surface of the upper electrode body 213-22. And the upper electrode body is formed to be coupled to an upper fixing plate 213-23 having a wedge-shaped guide 213-231. The upper fixing plate includes a pressing cylinder 213-241 and a guide shaft 213- 242 of the cylinder body 213-24.

At this time, the automatic nut feeder 220 includes a feeder cylinder 221 in which a cylinder rod 221-1 is formed to perform automatic feeding of the nut N; A pusher 222 coupled to the front of the cylinder rod of the feeder cylinder; A feed pipe 223 formed so that the pusher enters the end where the nut is discharged and the nut that has entered through the branch pipe 223-1 is discharged to the welding point by the pusher interlocking with the feeder cylinder; A plurality of stationary fingers (224) having a bite groove (224-1) for fixedly supporting a nut located at the welding point; An elastic body 225-2 is engaged with a guide rod 225-1 that penetrates the fixed finger so that a plurality of opposing fixed fingers are symmetrically opposed to each other or are constantly in contact with each other so as to close or separate the fixed finger A support (225) formed to support the substrate; .

In addition, although the automatic nut supply unit described above is described with reference to a nut in the present invention, it does not matter what type of welded object such as a small-sized bracket or the like means a component required for assembly by welding.

Such a nut is formed so as to be inserted into a hopper having an open top. In the hopper, rotation of the driving motor causes a restraining chain to catch the nut and to discharge the nut as a kind of supply hose.

In addition, it is preferable that the fixing finger is formed so as to be chamfered 224-2 at the upper corner facing each other, so as to correspond to the wedge-shaped guide end of the upper electrode 213-2 so as to separate the fixing finger during downward pressing .

This numerical control scheme allows precise trimming and piercing of the primary molded blank, such that the press and welding unit are configured to be instantaneous at the same time.

At one side of the weld, the weld is formed to be welded to the blank.

Thus, the robot having the transfer arm is formed so that the numerical control is set so that the loaded blank is loaded or unloaded (unloaded) from the tray into the work zone.

A second molding process in which trimming, piercing, cam trimming, and cam piercing are performed is prepared as a post process of the first molding process, and then cutting and piercing are performed as a post process And a fourth molding step in which the up-flange and the re-tie-ting are performed as a second step.

In addition, after the second forming step, the welding work generated from the third forming step is formed so that the pressing and welding are instantaneously performed at the same time.

When the third forming process is completed, the robot of the automatic loading device is formed to take out the work of the performed blank.

Meanwhile, the nuts and brackets can be welded in the mold during the press work. The nuts are formed in the upper mold before the blank is loaded. When the nuts are fed after the blank is loaded, the press is lowered and the welding cylinder is operated And is formed so as to simultaneously perform pressing and welding.

In other words, in the related art, work is performed by a worker on a separate line, resulting in a significant decrease in productivity and a problem of rising labor costs.

Also, in the prior art, work in process is required, and a separate work space is required for this, so that a problem of low space efficiency has also been brought about, and the present invention is characterized in that such matters are improved.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

10 ... press 20 ... welding unit
30 ... automatic loading device
100 ... press mold 110 ... lower mold
120 ... upper mold 130 ... press
200 ... welding unit 210 ... welded portion
220 ... automatic nut supply unit

Claims (10)

And the upper mold is formed to be raised and lowered with reference to the lower mold, and the upper mold presses the cylinder with respect to the lower mold so that the cylinder is lifted and pressed A press (10) formed to additionally perform a post-operation including trimming and piercing with respect to the primarily formed blank; A work loading device (20) provided with a robot having a transfer arm for injecting a primary formed blank into a press inner work zone through a numerical control set; A welding unit (30) provided at a desired one of the inside of the upper and lower molds and formed so as to be welded to the blank including a nut (N) at the time of press forming or pressing by a press; An automatic nut supply unit 40 formed at one side of the weld unit 210 and adapted to supply the nut N to the welding point C of the electrode module 213; A press system in which a series of pressing work and welding work are automatically carried out,
Wherein the press (10) is further provided with a cutting means for machining a trim or pierce for each point set in the work zone, and a press system having an automatic nut supply device for a mold and a work automatic loading device. delete The automatic welding machine as claimed in claim 1, wherein the press (10) is formed so that an up-down pressurizing cylinder is mounted on an upper mold top so as to press the lower mold. . The welding unit according to claim 3, wherein the welding unit (30) is provided with concave and convex workpieces (111, 121) each of which forms a pair on each surface of the press mold (100) facing the lower mold (110) The weld N is welded to the workpiece P in the workpieces 111 and 121 at the time of crimping or trimming by the press 130 so as to provide a rated capacity kva to the inside of the press, And the welding transformer 211 is formed to be electrically connected to a contact type power supply terminal 212 provided in the press mold 100. The power supply terminal 212 is formed at one side of the power supply terminal 212 in the work 111, And a welding portion 210 having an electrode module 213 for performing brazing while pressing the clamped nut N. The welding unit for a mold, the automatic feeding device for a nut, and the automatic work loading device Pressed sheath . The welding apparatus according to claim 4, wherein the welding terminal (212) of the welding part (210)
A lower terminal arm 212-1 and an upper terminal arm 212-2 having different electrodes are formed to energize the rated capacity connected from the welding transformer 211 to the electrode module 213, A swivel tip 212-22 is coupled to an upper portion of the rotation preventing and shock absorbing cylinder 212-21 so that the swivel tip 212-22 and the cylinder 212 And a point holder 212-23 and a clamper 212-24 which are energized with the welding transformer 211 to make an electrical connection between the welding unit and the nut automatic supplying device and the work Press system having an automatic loading device. 6. The method of claim 5, wherein the electrode module (213) of the weld (210)
A lower fixing plate 213-11 is formed to be electrically connected to the lower terminal arm of the electrifying terminal block to be energized, a lower electrode body 213-12 is formed on the upper surface of the lower fixing plate, A lower electrode part 213-1 for coupling the lower electrode 213-13;
The upper electrode is formed to be coupled to the bottom surface of the upper electrode body 213-22. The upper electrode body is connected to the wedge- 213-231 of the cylinder body 213-24 having the pressure cylinder 213-241 and the guide shaft 213-242, An upper electrode portion 213-2 to be coupled to the upper electrode portion 213-2;
Wherein the automatic welding machine includes a welding unit for a mold, an automatic feeding device for a nut, and a work automatic loading device. [7] The method of claim 6, wherein the fixed fingers are formed to chamfer upper chamfered portions facing each other so as to correspond to the wedge-shaped guide end portions of the upper electrode portion 213-2, And a press system having a welding unit for a mold, an automatic nut supply device and a work automatic loading device. The automatic welding machine according to claim 7, wherein the automatic nut supply unit (220) sequentially arranges the nuts introduced through the hopper through an arrangement kit, and then supplies the nuts through the supply line to the target point of the press. And a press system having an automatic nut feeder and a work loader. The automatic nut supply apparatus according to claim 8, wherein the automatic nut supply unit (220)
A feeder cylinder 221 in which a cylinder rod 221-1 is formed to perform automatic feeding of the nut N;
A pusher 222 coupled to the front of the cylinder rod of the feeder cylinder;
A feed pipe 223 formed so that the pusher enters the end where the nut is discharged and the nut that has entered through the branch pipe 223-1 is discharged to the welding point by the pusher interlocking with the feeder cylinder;
A plurality of stationary fingers (224) having a bite groove (224-1) for fixedly supporting a nut located at the welding point;
An elastic body 225-2 is engaged with a guide rod 225-1 that penetrates the fixed finger so that a plurality of opposing fixed fingers are symmetrically opposed to each other or are constantly in contact with each other so as to close or separate the fixed finger A support (225) formed to support the substrate;
Wherein the automatic welding machine includes a welding unit for a mold, an automatic feeding device for a nut, and a work automatic loading device. The work loader according to claim 9, wherein the work loading device (20) further includes a work unloading device for conveying, so that when the work is completed inside the press, the blank is loaded through the transfer arm to the tray Press system with welding unit and nut automatic feeder and work automatic loading device.

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