KR102004617B1 - Apparatus for welding jig door beam for vehicles and method of welding using the same - Google Patents

Abstract

The present invention relates to a door beam welding jig for a vehicle and a welding method using the same. More specifically, it is disposed between the mounting bracket portion 11 and the mounting bracket portion 12 at both ends and formed in a tubular shape from the plate material so that both end surfaces face each other and are spaced apart at specific intervals and then welded in the welding process. A vehicle door beam welding jig composed of a beam portion (11) having a welding gap (14) connected thereto, comprising: a hydraulic pressure generating device; A fixing part 100 for fixing the mounting bracket part 12; Side fixing parts (200) for pressing and fixing both sides of the beam part (11); A hydraulic oil inlet / outlet through which hydraulic oil enters and exits the hydraulic generator; And a hydraulic pressure applying unit 310 which is operated at an operating pressure of the hydraulic oil and which is located at both sides of the beam part 11 and slides in a direction perpendicular to the axial direction of the beam part 11, and the hydraulic pressure applying part 310 and the The pressing surface disposed between the beam parts 11 and in contact with the beam part 11 is shaped to fit the shape of the cross section of the beam part 11 and the hydraulic pressure applying part 310 slides the operating pressure. Including a crimping part 300 composed of a crimping block 320 applied to the beam part 11, the welding gap 14 faces the upper surface, and the beam part 11 is disposed between the crimping blocks 320. The operating pressure is applied to both sides of the beam part 11 through the compression block 320, and the welding gap 14 forms a compression block gap spaced apart by a specific distance so as to be exposed to the upper surface. 11) the welding by pressing to wrap Is the separation distance of the pole 14 is adjusted, the present invention relates to a vehicle door beam welding jig so as to facilitate the welding process.

Description

Door beam welding jig for vehicle and welding method using same {APPARATUS FOR WELDING JIG DOOR BEAM FOR VEHICLES AND METHOD OF WELDING USING THE SAME}

The present invention relates to a door beam welding jig for a vehicle and a welding method using the same. More specifically, in order to ensure uniform performance of a vehicle door beam produced by the cold forming method, a vehicle door beam welding jig and a welding method using the same can control the main parameters of the welding process including the uniformity of the plate gap. It is about.

A door beam for a vehicle is not an apparatus for preventing damage to the vehicle itself due to an external shock, but an important part of a vehicle that is directly connected to the safety of a driver or a passenger.

Due to the structure of the vehicle, the external shock in the front and rear direction has various cushioning factors, but the elements for absorbing the external shock in the lateral direction are very poor. In order to prepare for this, since the door beam is additionally mounted to the door frame, which is one of the body structures, it must be provided with both firmness and cushioning action.

In order to reinforce the rigidity of metals generally, a lot of heat treatment methods have been used. It is a principle to prevent the change occurring inside the metal or alloy by heating and quenching the metal. By maintaining a stable or intermediate state at a high temperature at room temperature, a hard metal material can be obtained.

However, this heat treatment method is one of hardening treatment methods of metals, and it does not maintain properties that can absorb the force due to deformation caused by external force, such as ductile and malleability. That is, the metals to which the heat treatment method is applied have the advantage of 'hardness', and a hard metal material that can withstand very strong external forces can be obtained according to the heat treatment method. However, as mentioned above, the vehicle door beam must have not only a rigid property for maintaining the shape of the vehicle body but also a shock absorbing function necessary to protect the driver or the occupant.

1 illustrates a structural diagram of a conventional vehicle door beam.

As can be seen in Figure 1, the conventional vehicle door beam is a separate form of the mounting bracket for fixing to the vehicle door frame at both ends of the beam (beam) and the beam formed of a sheet of steel pipe. At this time, the beam is formed to withstand a load of about 1,500Mpa through the heat treatment process after being formed into a steel pipe. However, when the beam exceeds the threshold of pressure that can be tolerated, the beam cannot be bent and breaks and the tube shape at the pressure application point is broken. In this case, when an external force is applied to the beam, the shock absorbing ability is drastically reduced, so that a considerable amount of the external force can be transmitted to the occupant. In addition, there is also a situation that the mounting brackets of both sides to be assembled as a separate component.

For this reason, a method of fabricating and using a steel pipe by U-O forming method has been proposed.

Figure 2 shows a schematic diagram of a door beam structure for a vehicle integrated mounting bracket applied to a welding jig for a vehicle according to an embodiment of the present invention.

The mounting bracket integrated vehicle door beam shown in FIG. 2 is manufactured by applying U-forming and O-forming after the sheet material is cut to a suitable size to be molded into the door beam. By superimposing one or more heat-treated plates and fixing them together to form a steel pipe, it has a pressure resistance performance of about 1,400 MPa to 1,500 MPa and does not undergo a heat treatment process, thereby providing the inherent malleability and ductility of metal materials. .

Unlike the general steel pipe manufacturing method using a rolling mill, since the steel pipe for the door beam is formed by using a plate cut to fit the vehicle structure to be mounted, there is an advantage that the mounting bracket fixed to the vehicle can be manufactured integrally. .

However, the door beam produced in this way, a problem arises that between the rolled plate, the individual door beam parts must be welded. In the general rolling method, the finished steel pipe is used, but as described above, since the molding process is applied in a state of being already cut into a separate sheet, the welding process also has to be applied to each door beam.

The door beam for a vehicle must be followed by a manufacturing method suitable for mass production for the purpose. Therefore, in order to ensure uniform performance of the door beam for a vehicle produced by the cold forming method, it is necessary to develop a welding jig that can control the main variables of the welding process including the uniformity of the sheet gap.

Korea Patent Publication 10-2011-0035695

Therefore, the present invention has been made to solve the above conventional problems, according to an embodiment of the present invention, while controlling the welding gap of the cold-molded vehicle door beam, the difference in the physical properties of the extension direction of the door beam Therefore, the object of the present invention is to provide a door beam welding jig for a vehicle and a welding method using the same, which can increase productivity by applying differentiated operating pressure and enable reverse correction in consideration of thermal deformation.

On the other hand, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly to those skilled in the art from the following description. It can be understood.

The first object of the present invention is disposed between the mounting bracket portion 11 and the mounting bracket portion 12 at both ends and formed in a tubular shape from the plate material so that both end surfaces face each other but are spaced apart at specific intervals after the welding process In the door beam welding jig for a vehicle comprising a beam portion (11) having a welding gap (14) which is welded in the connection, the hydraulic generator; A fixing part 100 for fixing the mounting bracket part 12; Side fixing parts (200) for pressing and fixing both sides of the beam part (11); A hydraulic oil inlet / outlet through which hydraulic oil enters and exits the hydraulic generator; And a hydraulic pressure applying unit 310 which is operated at an operating pressure of the hydraulic oil and which is located at both sides of the beam part 11 and slides in a direction perpendicular to the axial direction of the beam part 11, and the hydraulic pressure applying part 310 and the The pressing surface disposed between the beam parts 11 and in contact with the beam part 11 is shaped to fit the shape of the cross section of the beam part 11 and the hydraulic pressure applying part 310 slides the operating pressure. Including a crimping part 300 composed of a crimping block 320 applied to the beam part 11, the welding gap 14 faces the upper surface, and the beam part 11 is disposed between the crimping blocks 320. The operating pressure is applied to both sides of the beam part 11 through the compression block 320, and the welding gap 14 forms a compression block gap spaced apart by a specific distance so as to be exposed to the upper surface. 11) the welding by pressing to wrap Is the separation distance of the pole 14, control may be achieved by providing a vehicle door beam welding jig so as to facilitate the welding process.

In addition, the beam portion 11 may be characterized in that the mounting bracket integral vehicle door beam formed in a tubular shape from the plate material by the U-O forming method.

Further, a through hole 13 is further provided in the mounting bracket part 12, a through fixing pin 120 inserted into the through hole 13, and a clamp clamping the upper and lower surfaces of the mounting bracket part 12. At least one or more of the parts 110 may be provided in the fixing part 100 to reduce the play in the extending direction of the beam part 11.

In addition, the crimping block 320 may be divided into at least one of an extension direction of the beam part 11 and a vertical direction crossing the extension direction.

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In addition, a tapered portion may be formed at a corner where an upper portion of the crimping block 320 and an outer surface of the beam portion 11 meet each other, so that the welding nozzle may easily approach the welding gap 14.

In addition, the welding block plate 330 may be further disposed on the upper surface of the crimping block 320 to protect the worker or the welding jig from foreign substances including spatters generated during welding.

In addition, an input unit for receiving a crimp welding information including a crimping pressure value, material information, and a welding method from a user; and calculating a welding request gap based on the crimp welding information based on the crimp welding information, and calculating the welding request gap. It may be characterized in that it further comprises a control unit for controlling the magnitude of the operating pressure based on the hydraulic generator.

The welding method may be a cold metal transfer (CMT) welding method or one of laser welding methods.

The apparatus may further include an image unit configured to obtain an image of the welding gap, wherein the controller is configured to store welding operation information including the crimp welding information and the welding gap image, and the welding based on the welding gap image. And a determination unit for measuring a separation distance of the gap 14 and comparing the welding request gap with each other to determine whether the welding process is in progress. It may be characterized by further comprising a display unit for displaying the above operation state.

In addition, a strain gage is installed on the crimp block 320 to measure the strain of the crimp block 320 when the crimp block 320 compresses the beam part 11, and the controller controls the strain and the welding. The distance difference value of the gap 14 and the operation pressure is matched and compared, and based on the result, the operating pressure may be characterized in that the welding gap can be re-adjusted to reach the welding demand gap.

In addition, the hydraulic pressure applying unit 310 is divided into at least one of the direction of extending the beam forming part 11 and the vertical direction crossing the extension forming direction, the operation flow inlet and the hydraulic applying unit 310 The operating pressure distribution unit may be further disposed therebetween, so that the different operating pressures may be applied to the compression block 320.

The second object of the present invention is the mounting bracket portion 12 is formed on both ends of the sheet material, the remaining portion except the mounting bracket portion 12 is formed in a tubular shape by the UO forming method welded that both ends face each other In the welding method using a door beam welding jig for a vehicle composed of a beam portion 11 having a gap 14, the through hole 13 formed in the mounting bracket portion 12 is formed in the fixing portion 100. Mounting a door beam (10) to the welding jig so that the fixing pin (120) is inserted; Fixing the door beam (10) by clamping the upper and lower surfaces of the mounting bracket part (12) by the clamp (110) formed on the fixing part (100); Operating the hydraulic generator to apply hydraulic oil to the operation flow inlet / outlet of the welding jig; Applying hydraulic pressure to the hydraulic pressure applying unit (310) located at both sides of the beam unit (11), and the hydraulic applying unit (310) applying the operating pressure to the crimping block (320); Pressing the pressing block 320 by applying the operating pressure to the beam part 11; Adjusting the separation distance of the welding gap 14 by the pressing action of the pressing block 320; Determining whether the plate gap satisfies a welding request gap required in a welding process; And it can be achieved by providing a welding method using a door beam welding jig for a vehicle comprising the step of welding to the welding gap (14).

In addition, the input unit receives the crimping welding information including the crimping pressure value, material information and welding method from the user; Acquiring an image of the welding gap (14) of the beam part (11) in the image part; A control unit calculating a welding request gap based on the crimp welding information and controlling the magnitude of the operating pressure through the hydraulic pressure generating device based on the welding request gap; Storing, by the controller, welding operation information including the crimp welding information and the welding gap image in a memory unit; Determining, by the determination unit, whether the welding process is performed by measuring the plate gap based on the welding gap image and comparing the welding request gap with the display unit; and the input unit, the image unit, the controller, and the memory unit; The method may further include displaying at least one operating state of the determination unit.

According to one embodiment of the invention, while controlling the welding gap of the cold-molded vehicle door beam, by applying a differential operating pressure in accordance with the difference in the physical properties of the extension direction of the door beam to increase the productivity, considering the thermal deformation inverse correction By enabling this, there is an advantage that rational quality control is also possible.

On the other hand, the effect obtained in the present invention is not limited to the above-mentioned effects, other effects that are not mentioned will be clearly understood by those skilled in the art from the following description. Could be.

The following drawings, which are attached in this specification, illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention, serve to further understand the technical spirit of the present invention. It should not be construed as limited to.
1 is a structural diagram of a conventional vehicle door beam
2 is a structural conceptual view of a mounting bracket integrated vehicle door beam applied to a welding jig for a vehicle according to an embodiment of the present invention;
Figure 3 is a perspective view of a welding jig for vehicles according to an embodiment of the present invention
4A-4B. An enlarged perspective view of a fixing part of a welding jig for a vehicle according to an embodiment of the present invention.
Figure 5 is an enlarged perspective view of the crimping portion of the welding jig for vehicles according to an embodiment of the present invention.
6A. A perspective view of a crimping block of an integrated vehicle door beam being pressed by a welding block for a vehicle according to an embodiment of the present invention.
Figure 6b. Side cross-sectional perspective view of a crimping block of a welding jig for a vehicle according to an exemplary embodiment of the present disclosure in a crimped state of an integrated vehicle door beam.
Figure 7 is a block diagram of an automated device using a welding jig for a vehicle according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing in detail the operating principle of the preferred embodiment of the present invention, if it is determined that the detailed description of the related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In addition, the same reference numerals are used for parts having similar functions and functions throughout the drawings. Throughout the specification, when a part is connected to another part, this includes not only the case where it is directly connected, but also the case where it is indirectly connected with another element in between. In addition, the inclusion of any component does not exclude other components unless specifically stated otherwise, it means that may further include other components.

Hereinafter will be described the configuration and function of a door beam welding jig for a vehicle and a welding method using the same according to an embodiment of the present invention.

Figure 3 shows a perspective view of a welding jig for a vehicle according to an embodiment of the present invention.

As shown in FIG. 3, the welding jig according to the exemplary embodiment of the present invention includes a fixing part 100 for fixing the mounting bracket part 12 formed on both sides of the beam part 11, and welding the beam part 11 by crimping. It may include a crimping part 300 for maintaining the gap 14 as a welding request gap that is differentially required according to the welding method, and a working flow inlet / out part in which the hydraulic pressure which is a power source of the crimping part 300 is applied from the hydraulic generator. have. In addition, the crimping unit 300 may include a hydraulic applying unit 310 and a crimping block 320. At this time, the welding demand gap is about 0.5 mm in the case of general CMT welding, and a precision gap of about 0.1 mm is required in the case of laser welding, which is one of the high-speed precision welding methods.

The vehicle door beam 10 shown in FIG. 2 is mounted and welded to a welding jig according to an embodiment of the present invention shown in FIG. 3 and its operation method is as follows.

As shown in FIG. 3, the integrated door beam 10 in which the mounting bracket part 12 is formed, such as the vehicle door beam 10 shown in FIG. 2, is placed on the welding jig. Since the pressing force for securing the welding demand gap must be applied to the beam part 11, first, the door beam 10 should minimize the play in the extending direction of the beam part 11. If a part of the beam portion 11 is not compressed due to the play, it is difficult to secure a plate gap in the portion, and unnecessary deformation may occur in addition to the mounting bracket portions 12 on both sides.

Therefore, the through hole 13 is formed in the mounting bracket part 12, and the fixing part 100 of the welding jig according to the embodiment of the present invention is inserted into the through hole 13 to form the extension of the door beam 10. The through fixing pin 120 may be disposed to minimize the directional play. The through fixing pin 120 may be inserted into the through hole 13 to minimize the clearance of the door beam 10, thereby facilitating a pressing process limited to the beam part 11. The raised door beam 10 still has a clearance in the vertical direction across the extension direction, and thus may be further fixed by having a clamp portion 110 clamping the upper and lower surfaces of the mounting bracket portion 12.

The fixed state in the fixing part 100 may minimize the gap between the extending direction and the vertical direction of the door beam 10, but the left and right gaps of the door beam 10 may not be completely removed. . Compression to secure the welding gap 14 is applied to the central axis of the door beam 10 on the left and right sides across the extending direction of the door beam 10. Strong hydraulic pressure is applied from the left and right sides of the door beam 10, and the position of the central axis of the door beam 10 and the moving distance of the hydraulic applying unit 310 or the pressing block 320 to apply both sides of the door beam 10. May be different or there may be a slight difference in both pressures. In this case, a uniform working hydraulic pressure may not be applied to the entire welding gap 14 of the door beam 10, which may directly cause welding failure.

Therefore, after fixing the mounting bracket portion 12 of the door beam 10 in the fixing part 100, the side fixing part 200 moves toward the central axis of the door beam 10 to move the door beam 10 in the extending direction. Minimize play in right and left directions. At this time, the side fixing part 200 is linked with the moving distance of the hydraulic applying unit 310 and the pressing block 320, the moving central axis of the side fixing portion 200 and the hydraulic applying unit 310 and the pressing block 320 It is possible to make the moving central axis of the same.

When the door beam 10 is fixed to the welding jig by the fixing part 100 and the side fixing part 200, the hydraulic generator is operated to apply hydraulic oil to the welding jig. The applied hydraulic oil applies hydraulic pressure to the hydraulic pressure applying unit 310, the hydraulic pressure applying unit 310 applies an operating pressure to the crimping block 320, and the crimping block 320 moves in the horizontal direction. ) Is pressed to adjust the separation distance of the welding gap 14 of the door beam 10. If the adjusted welding gap 14 is close to the welding required gap for welding, welding can be performed.

4 is an enlarged perspective view of a fixing part of a welding jig for a vehicle according to an exemplary embodiment of the present invention. The clamp portion 110 for clamping the plate-shaped mounting bracket portion 12 up and down is installed, and the through fixing pin 120 is inserted into the through hole 13 formed in the mounting bracket portion 12, thereby providing a door beam ( 10) is fixed. The structure of the mounting bracket part 12 may change the structure of the clamp unit 110 and the position of the penetrating fixing pin 120 depending on the type of vehicle to be mounted.

In addition, in the mounting bracket part 12 opposite to the mounting bracket part 12 in which the through hole 13 is formed, a through groove is formed in place of the through hole 13 and is fitted to the through fixing pin 120, thereby providing a door beam 10. The fixing part 100 of the can be easily mounted.

Figure 5 shows an enlarged perspective view of the crimping portion of the welding jig for a vehicle according to an embodiment of the present invention. As can be seen in Figure 5, the pressing unit 300 may be composed of a hydraulic applying unit 310 and the pressing block 320.

The crimping block 320 is a member that directly applies an operating pressure to the door beam 10, and is molded into a shape that is fitted with the beam part 11 of the door beam 10, as shown in FIG. 5. In order to surround the outer surface of the door beam 10, the crimping block 320 according to the embodiment includes an upper formation block 320a and a lower compression block 320b in an upward direction crossing the extension formation direction and the extension formation direction. Can be divided.

As described above, the welding jig according to the embodiment of the present invention is manufactured by cold forming a plate without a heat treatment process, and maintains inherent ductility and malleability of the metal plate. In this state, it is also important that the pressing block 320 apply a uniform pressing force in the left and right directions, but maintaining the uniformity of the physical properties of the extending direction of the beam part 11 is also an important factor. That is, when ductility and malleability change in the extending direction of the door beam 10 appear, applying a uniform operating pressure in the left and right directions may be a negative factor in maintaining a uniform welding gap. This may cause abnormal deformation due to the high temperature generated during the compression process, the welding process and the welding process.
The compression block 320 is divided into an upper compression block 320a and a lower compression block 320b, as shown in FIG. 5, in order to prepare for ductility and malleability change in the extension direction of the beam part 11. The upper compression block 320a and the lower compression block 320b are each divided into a plurality of blocks, and each block may apply different operating pressures to the beam unit 11.

However, the physical properties of the raw material sheet can not be understood in the processing process, and the error within the quality control range of the product is inevitable. In particular, changes in manufacturing characteristics by production lot are inevitable in mass production systems. Therefore, when simultaneously welding the long length beam portion 11, such as the welding jig according to an embodiment of the present invention, the aforementioned non-uniformity of the longitudinal properties should be considered.

As shown in Figures 3 to 6, the compression block 320 of the welding jig according to an embodiment of the present invention is divided into the upper compression block 320a and the lower compression block 320b, as described above, the upper compression The block 320a and the lower compression block 320b are each divided into a plurality of blocks, and each block applies a different operating pressure to the beam unit 11, thereby easily correcting thermal deformation resulting from unbalanced properties of steel. It can be done. In addition, when a part of the beam part 11 is intentionally changed, only a part of the compression blocks 320 may be replaced, thereby facilitating a jig structure change according to a door beam design change.

In addition, as shown in FIG. 5, the crimping block 320 is crimped into a shape surrounding the beam part 11 to minimize distortion in the circular structure of the cross section of the beam part.

 The circular cross-sectional structure of the beam part 11 is one of the main structural features that the beam part 11 can bear external impact without deformation.

If only the upper compression block 320a is disposed without the lower compression block 320b shown in FIG. 5, and the operating pressure is applied only in the vicinity of the welding gap 14 of the beam part 11, the beam part 11 may be closed. The circular structure may be deformed, so that the critical pressure supporting the external impact is drastically lowered, or, in the case of the double steel pipe structure formed by overlapping plates and adhering to each other, the portion of the double steel pipe structure and the portion thereof are not. "Bending" can also be expected. Therefore, as shown in FIG. 5, both the upper compression block 320a and the lower compression block 320b are used to apply a uniform operating pressure to the circular cross section of the beam part 11, and at the same time, enable reverse correction when thermal deformation occurs. .

As shown in FIG. 5, the upper and lower compression blocks 320a and 320b of the welder according to the present invention are divided into six in the extending direction of the beam part 11 and two in the vertical direction. That is, the crimping block 320 is divided into 24 blocks.

The welding protection plate 330 may be disposed on the upper surface of the crimping block 320 to protect the worker or the welding jig from the spatter generated during the actual welding process.

6A is a perspective view of a crimping block of a vehicle welding jig according to an embodiment of the present invention in an integrated vehicle door beam crimping state, and FIG. 6B is a side cross-sectional view of a crimping block of a vehicle welding jig in an integrated vehicle door beam crimping state in FIG. 6A. Is shown.

As shown in FIG. 6, the corner where the upper portion of the crimping block 320 meets the outer surface of the beam part 11 may have a separation distance so that the welding nozzle may approach the welding gap 14. It may have a taper structure inclined at 20 to 100 degrees or a separation distance within 8 mm to 16 mm.

The separation distance within 8 mm to 16 mm is a numerical limitation necessary to prevent distortion in the cross-sectional shape of the O-formed beam portion 11. Welding jig according to an embodiment of the present invention is for a vehicle door beam. As mentioned above, the purpose of the vehicle door beam 10 is for the safety of the vehicle occupant. Therefore, the shape itself of the beam part 11 may also be one of very important performance factors. In particular, the tubular support structure such as the beam portion 11 is molded in a circular cross section, and the structural rigidity of the circular cross section is fused together with the inherent rigidity of the material, and has a performance capable of withstanding a large force.

Referring to FIG. 6, when the compression blocks 320 on both sides of the beam part 11 compress the beam part 11 as described above, the welding nozzles face each other in order to approach the beam part 11. The sides of are to be spaced a certain distance apart. However, this separation distance means that the pressing force does not reach the adjacent region of the welding gap 14 of the beam portion 11 by that distance. Therefore, if this distance becomes too far, the radius of curvature of the remaining beam portion 11 that the curvature radius near the welding gap 14 that is not applied with the pressing force by the crimping block 320 contacts and crimps the crimping block 320. This phenomenon may produce a product out of the weld gap 14 the product design value.

In addition, the region adjacent to the welding gap 14 is a site where there is a fear of thermal deformation by welding, and is an important site in consideration of reverse correction for compensating for such thermal deformation. Therefore, in this area, the crimp block 320 simply "compresses" to maintain the welding demand gap and also has the same curvature radius as that of the rest of the crimp by the crimp block 320 in the cross-sectional shape. 320) the gap between them should be as narrow as possible.

Accordingly, the separation distance of the crimping block 320 is varied, and the result of experiments by applying the same operating pressure, it is preferable to maintain the separation distance within 8mm ~ 16mm.

Typical cold metal transfer (CMT) welding requires a gap of about 0.5mm, laser welding requires a sheet gap of less than 0.1mm, and more than tens of thousands of units are produced per day in my production line. While maintaining tremendous production speeds, it is also essential to maintain the performance of safety-related components such as door beams 10.

Therefore, by incorporating an automated device into the welding jig according to an embodiment of the present invention, not only a certain level of welding process management is possible, but also an increase in production per unit time can be expected.

Figure 7 shows a block diagram of an automated device using a welding jig for a vehicle according to an embodiment of the present invention.

As illustrated in FIG. 7, the welding jig according to the exemplary embodiment of the present invention accurately measures an input unit for receiving pressure control-related crimp welding information from a user, a welding gap 14, and a welding demand gap in a welding process. And a control unit including an image unit for generating image information of a welding gap required for automation and automation, and a device for controlling these devices, and determining whether to operate based on various data.

The user can set the expected crimping pressure value based on the various property information related to the material received from the material supplier, self-tested test information, or the result of the process proceeded first by using the same equipment. Can be set separately.

The controller may store the compressed welding information input in the memory, and control the operating pressure applied to the beam unit 11 by the pressing block 320 by controlling the flow rate and the hydraulic pressure of the hydraulic generator based on the information. .

The welding gap image generated by the imaging unit may be applied in two ways. In the image unit, as shown in FIG. 7, the welding gap image before the pressing of the door beam 10 and the welding gap image after the pressing of the door beam 10 may be output.

As described above, after the door beam 10 is mounted on the welding jig and fixed by the fixing part 100 and the side fixing part 200, the welding gap 14 may be confirmed. No matter how precisely the sheet is cut, differences in the degree of bending may occur in the U-O forming process.

In addition, by welding the beam part 11 for welding, the welding gap after the plate gap is adjusted may be re-measured to determine whether the actual welding process is started.

In recent years, image processing technology has developed remarkably, and there is no great difficulty in checking the separation distance between the simple shapes such as the welding gap 14, the deviation of the separation distance, and the linearity of the spaced central axis, and the processing time is very high. It can be short. In addition, quantitative processing and quantitative data accumulation are essential, which can be essential for continuous improvement of equipment and materials and yield improvement.

The image of the welding gap 14 photographed by the imaging unit determines whether to start welding through the shape recognition and measurement process by the determination unit, and matches the image information at this time with the operating pressure and the compression welding information input from the input unit. By storing and recording the data, it can be an important basis for future equipment and material improvement.

3 to 6, the compression block 320 applied to the welding jig according to the present invention may be divided into an upper compression block 320a and a lower compression block 320b. In this case, a strain sensor is disposed between each of the pressing blocks 320 itself or between the pressing blocks 320 and the hydraulic applying unit 310 to indirectly determine the degree of compression of the beam part 11 or the degree of deformation of the welding gap (! 4). It can be measured. That is, when the gap between the hydraulic applying unit 310 and the pressing block 320 is narrowed, it can be inferred that the ratio of the operating pressure to the jig deformation is higher than that of the other case. It can be estimated that the critical pressure value for reducing the strain of 11) or adjusting the welding gap 14 is larger. In addition, if this phenomenon appears different for each of the divided upper and lower compression blocks (320a, 320b), it is also estimated that the physical properties of the plate as a raw material of the door beam 10, as described above, for each position of the plate Can be. In addition, the divided hydraulic application unit 310 is applied to the divided compression block 320, and the operating pressure is distributed to the divided hydraulic application unit 310 to each other for each of the upper and lower compression blocks 320a and 320b. Different operating pressures may be applied.

Therefore, the welding jig according to an embodiment of the present invention controls the welding gap 14 of the cold-formed vehicle door beam 10, while the differential pressure according to the difference in the physical properties of the extension direction of the door beam 10 By increasing the productivity and by enabling the reverse correction in consideration of the thermal deformation, there is an advantage that can be rational quality control.

In addition, the above-described apparatus and method may not be limitedly applied to the configuration and method of the above-described embodiments, but the embodiments may be selectively combined in whole or in part in each of the embodiments so that various modifications may be made. It may be configured.

10. Door Beam
11. Beam part 12. Mounting bracket part 13. Through hole 14 Welding gap
100. Fixed part
110. Clamp part 120. Through pin
200. Lateral fixation
300. Crimp
310. Hydraulic parts 320. Crimp block 330. Welding shield
320a. Upper compression block 320b. Lower Crimp Block

Claims (14)

A welding gap disposed between the mounting bracket part 12 and the mounting bracket part 12 at both ends, and formed in a tubular shape from a plate, so that both end faces face each other, but are spaced at specific intervals and then welded and connected in a welding process. In the door beam welding jig for a vehicle composed of the beam portion 11 provided with (14),
Hydraulic generator;
A fixing part 100 for fixing the mounting bracket part 12;
Side fixing parts (200) for pressing and fixing both sides of the beam part (11);
A hydraulic oil inlet / outlet of the hydraulic oil from the hydraulic generator; and
A hydraulic pressure applying unit 310 and a hydraulic pressure applying unit 310 and the beam unit which are operated at an operating pressure of the hydraulic oil and are located on both sides of the beam unit 11 and slide in a direction perpendicular to the axial direction of the beam unit 11. The pressing surface disposed between the contacting parts 11 and the beam part 11 is in a shape that is aligned with the shape of the cross section of the beam part 11, and the hydraulic pressure is applied to the beam part as the hydraulic pressure applying part 310 slides. Including a crimping portion 300 composed of a crimping block 320 applied to (11),
The welding gap 14 faces the upper surface, the beam portion 11 is disposed between the compression block 320, the operating pressure is applied through the compression block 320 on both sides of the beam portion 11 The welding gap 14 forms a crimp block gap spaced apart by a specific distance so as to be exposed to the upper surface, and the welding gap 14 is compressed to surround the beam part 11 to adjust the separation distance of the welding gap 14 to facilitate the welding process. Vehicle door beam welding jig. The method of claim 1,
The beam portion 11,
The vehicle door beam welding jig, characterized in that the mounting bracket integral vehicle door beam is formed in a tubular shape from the plate material by the UO forming method. The method of claim 1,
The through hole 13 is further provided in the mounting bracket portion 12,
At least one or more of the through fixing pin 120 inserted into the through hole 13 and the clamp portion 110 for clamping the upper and lower surfaces of the mounting bracket portion 12 is provided in the fixing portion 100,
Door beam welding jig for the vehicle, characterized in that for reducing the play in the extending direction of the beam portion (11). The method of claim 1,
The pressing block 320 is a vehicle door beam welding jig, characterized in that divided into at least one direction of the extending direction of the beam forming portion 11 and the extending direction of the extension forming direction. The method of claim 1
A tapered portion is formed at an edge where the upper portion of the compression block 320 and the outer surface of the beam portion 11 meet each other.
The door beam welding jig for a vehicle, characterized in that the welding nozzle to be easily close to the welding gap (14). The method of claim 1
In the beam part 11
The pressing block gap is a vehicle door beam welding jig, characterized in that less than 8mm ~ 16mm. The method of claim 1,
The vehicle door beam welding jig further comprises a welding protection plate 330 disposed on the upper surface of the crimping block 320 to protect the worker or the welding jig from foreign substances including spatters generated during welding. The method of claim 1,
An input unit configured to receive crimp welding information including a crimping pressure value, material information, and a welding method from a user; And
And a control unit for calculating a welding request gap according to the welding method based on the crimp welding information, and controlling a magnitude of the operating pressure based on the welding request gap. The method of claim 8
The welding method is a cold metal transfer (CMT) welding method, or a door beam welding jig for a vehicle, characterized in that one of the laser welding method. The method of claim 8,
Further comprising an image unit for obtaining an image of the welding gap,
The controller measures a separation distance of the welding gap 14 based on the memory unit for storing welding operation information including the crimp welding information and the welding gap image, and the welding gap image, and compares the welding request gap with the welding request gap. Further comprising a determination unit for determining the progress of the welding process,
And a display unit for displaying at least one operation state among the control unit, the memory unit, the determination unit, the input unit, and the image unit. The method of claim 8,
By installing a strain gage on the crimping block 320 and measuring the strain of the crimping block 320 when the crimping block 320 compresses the beam part 11,
The control unit compares and compares the deformation rate and the change distance of the welding gap 14 and the operating pressure, and re-adjusts the operating pressure so that the welding gap reaches the welding demand gap based on the result. A door beam welding jig for a vehicle. The method of claim 4
The hydraulic application unit 310 is divided in at least one of the direction of extending the beam forming portion 11 and the vertical direction crossing the extension direction,
The operating pressure distribution unit is further disposed between the operation flow inlet / outlet and the hydraulic applying unit 310,
The door beam welding jig for a vehicle, characterized in that to apply the different operating pressure to the crimping block (320). Mounting bracket portions 12 are formed at a portion of both ends of the plate, and the remaining portions except for the mounting bracket portion 12 are formed in a tubular shape by the UO forming method, so that both ends have welding gaps 14 facing each other. In the welding method using a door beam welding jig for a vehicle composed of a beam portion 11,
Mounting a door beam (10) to the welding jig so that the through fixing pin (120) formed in the fixing part (100) is inserted into the through hole (13) formed in the mounting bracket part (12);
Fixing the door beam (10) by clamping the upper and lower surfaces of the mounting bracket part (12) by the clamp (110) formed on the fixing part (100);
Operating the hydraulic generator to apply hydraulic oil to the operation flow inlet / outlet of the welding jig;
Applying hydraulic pressure to the hydraulic pressure applying unit (310) located at both sides of the beam unit (11), and the hydraulic applying unit (310) applying the operating pressure to the crimping block (320);
Pressing the pressing block 320 by applying the operating pressure to the beam part 11;
Adjusting the separation distance of the welding gap 14 by the pressing action of the pressing block 320;
Determining whether the plate gap satisfies a welding request gap required in a welding process; And
Welding method using a door beam welding jig for a vehicle comprising the step of welding to the welding gap (14). The method of claim 13,
Receiving, by an input unit, crimp welding information including a crimping pressure value, material information, and a welding method;
Acquiring an image of the welding gap (14) of the beam part (11) in the image part;
A control unit calculating a welding request gap based on the crimp welding information and controlling the magnitude of the operating pressure through the hydraulic pressure generating device based on the welding request gap;
Storing, by the controller, welding operation information including the crimp welding information and the welding gap image in a memory unit;
Determining, by the determining unit, whether the welding process is performed by measuring the plate gap based on the weld gap image and comparing the weld gap with the weld;
And displaying at least one operation state of the input unit, the image unit, the control unit, the memory unit, and the determination unit in a display unit.

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