KR102302589B1 - Electric Resistance Welding apparatus - Google Patents

Abstract

Disclosed is an electric resistance welding apparatus. The electric resistance welding apparatus comprises: a welding unit (100) in which a pressure jig is sequentially pressurized in a state in which a pressure block is pressurized by the operation of a pressure cylinder consisting of an upper body with a welding table installed in the center, a welding fixing part, a pressing part, a jig part, and a control part, and power is supplied, and the pressure bonding is performed by the bonding heat generated by the electrical resistance of the contact portion; a cover unit (200) including a horizontal plate equipped with a welding unit angular rotation stage capable of moving forward and backward by mounting the welding unit, and made of a telescopic member installed in front to open the front to the rear of the horizontal plate as an axis; and a transfer unit (300) having an upper frame loaded with a welding device and provided with a transfer wheel.

Description

Electric Resistance Welding Apparatus

The present invention relates to an electric resistance welding apparatus, comprising a welding unit comprising a welding fixing unit, a pressing unit, a jig unit, and a control unit, and a single-angle rotation stage capable of moving forward and backward by mounting the welding unit and ascending and descending to the rear It relates to an electric resistance welding apparatus having a cover unit made of a telescopic member installed in the front so as to open the front on the axis and a transfer unit for moving the workshop.

In general, welding (鎔接, welding) refers to a method of joining metal materials of the same or different types by applying heat and pressure to form a direct bond between solids, and there are a fusion welding method and a pressure welding method. The fusion welding method is a method of heating and melting a metal material at the junction to rearrange and bond the atomic bonds of two different materials, and there are arc welding, gas welding, and thermite welding. Compression welding is a method of joining by applying strong external physical pressure to the joint. The method of applying pressure and heating at the same time, such as gas pressure welding or short welding, is especially called hot pressure welding or hot pressure welding. In general, materials with high ductility such as aluminum and copper are used for pressure welding, and welding is possible only by pressing at room temperature, so it is called cold welding.

That is, when an electric current flows through an electric conductor, heat is generated in the conductor due to the resistance, and this heat is called resistance heat or Joule heat. When there are two conductors, the electrical resistance, that is, the contact resistance, of the portion in contact with the good conductor is generally larger than the specific resistance of each conductor. Therefore, the amount of resistance heat generated per unit time with the same magnitude of current per unit volume is greater at the contact side than inside the conductor. Accordingly, the temperature of the contact portion of the good conductor becomes very high according to the energization, and the metal of the contact portion finally melts. At this time, if the current is cut off and the positive conductors are pressed against each other by applying pressure from the outside, the good conductors will be combined in close contact with each other. As described above, the electric resistance welding method is a method of using heat generated by electric resistance to cause melting of the contact part and joining it by using pressure together. The electric resistance welding method as described above does not supply welding materials like general arc welding, but applies a suitable pressure to bring the molten parts of the two metals into close contact. Therefore, the electric resistance welding method can be said to be a kind of pressure welding method. The pressure welding method is classified into a heating type and a non-heating type, and the most widely used in the pressure welding method is electric resistance welding. , seam welding, flash welding, etc. In general, the factors that have the greatest influence on electric resistance welding are welding current (I), energization time (t), and pressing force (P), which are three factors of welding conditions. However, when electric arc welding is performed, there is a problem that arc welding cannot be performed due to thermal damage caused by high temperature and high pressure arc heat in soft precious metals with a low melting point. In addition, when a welding additive is added to a precious metal, other materials are mixed into the precious metal, thereby reducing the value of the precious metal. In addition, the gas welding method as described above has a problem in that the surface of the soft noble metal is discolored when melting at a high temperature and needs to be processed secondarily. Since it was done manually, there was a problem in that the production speed was significantly increased and the labor cost was increased. Accordingly, there is a need for a welding unit that joins precious metals using an electrical resistance welding method in which the base material is made in a molten state and joined by applying an external force as electrical resistance heat generated in the contact part through an electric current to the object to be welded.

The electric resistance welding method allows a large amount of current to flow in a short time compared to arc welding, or requires a precise control device, and the welding temperature is also required to be lower than arc welding, and welding stability is required by increasing the working speed. In addition, rapid movement of the welding equipment is required, but it is not only inconvenient to move when the working environment is not good, but also the operator must move manually every day.

In addition, the electric resistance welding apparatus employs a cylinder to set the position by raising/lowering the movable electrode part. As a result, the operation was possible because the entire position including the movable electrode part had to be adjusted upward or downward on the frame of the welding device because the user could not raise/lower it as much as the user wanted within the movable section of the movable electrode part. Not only is it cumbersome and delays the work, but also in the case of the test pressurization performed to check whether the position of the movable electrode part is accurate during the welding process, there was a problem that it could not be easily carried out for the same reason as above. It was required to have an inclination so that the posture of the welding device could be inclined forward.

In addition, as current flows between the upper electrode and the lower electrode, resistance heat is generated, and when welding is performed, spatter (spatter, generated during welding "Molten scattering product") is generated. However, excessive generation of these spatters may cause welding defects such as loss of material and reduction in the thickness of the welded portion, and further cause various serious problems such as burns to workers or contamination of the workplace. Therefore, a transparent cover means that can be welded with the naked eye without a mask is also required to solve various problems caused by the excessive generation of such spatters. A cover means that can be used is also required.

That is, the problem that appears in such an electric resistance welding method is that an eye protection mask means must be used during welding. For various and precise welding at the welding site, a welding device without a welding mask and rapid movement is required. In addition, a state in which the positions of the pressing jig and the fixing jig of the welding table are moved forward by one angle in a covered state may be concave.

In addition, rapid movement is required for various situations of the welding apparatus, and a welding transfer apparatus that is transported without an operator is required. However, it was not uncommon to find that it was difficult to move because it fell on a curved surface or fell into a groove while moving by using a simple wheel that did not consider the floor condition in the welding plant. Therefore, it was necessary to devise a transport means that facilitates the operation of the auxiliary wheel on the floor of the workshop.

Registered Patent No. 10-0548015 (Announcement date February 01, 2006) Registered Patent No. 10-2194443 (Announcement date December 23, 2020) Registered Patent No. 10-1166968 (Announcement Date July 20, 2012)

Patent Publication No. 10-1996-0040537 (published on December 17, 1996) Publication No. 10-2017-0054272 (Published on May 17, 2017) Patent Publication No. 10-1999-000305 (published on January 15, 1999) Patent Publication No. 10-2010-0010666 (published on February 02, 2010)

The present invention provides power to each jig while pressing with a pressure cylinder while placing the object to be welded in the jig part, and by controlling the pressing force with a pressurizing cylinder as it is melted and joined by the heat generated from the contact surface of the welding object pressurized by electricity, By improving the bonding strength by uniform pressure, and by adjusting the pressing force with a pressure cylinder as it melts and joins by heat, the bonding strength is improved by uniform pressure, and a spatter prevention device that can effectively protect workers from spatter. to do that for that purpose.

In addition, the present invention implements a sealed cover to protect the human body of workers from welding sparks, etc. and to be safe during the welding operation so as to predict and determine whether or not welding is appropriate, and the situation inside the welding device can be monitored by the operator without a mask. It also aims to implement as a transparent cover means so that visual confirmation is possible.

Another object of the present invention is to provide a welding device for an electric resistance welding device in a forward inclined view posture applicable to a welding posture having an inclination while maximizing the melting principle of electric resistance heating.

Another object of the present invention is to selectively store any pressing force and current values desired by the user in the pressurized series and welding series or to easily modify the stored data by using a plurality of operation keys during welding through the control switch. An object of the present invention is to provide an electric resistance welding device capable of maximizing work efficiency and improving productivity by simply and quickly preparing and performing welding work according to the material of the object to be welded.

The present invention improves the problem of secondary processing due to discoloration of the surface of soft precious metals with low melting points at high temperatures during welding, increases production speed, and enables precise control to save labor costs, and allows precise control of welding temperatures , It is an object of the present invention to provide a welding device that can control the low temperature and improve welding stability such as speeding up the working speed.

In addition, an object of the present invention is to provide a transfer means of the welding apparatus that is not only easy to move even when the working floor condition of the welding apparatus is not good, but also that the transfer apparatus is stably controllable.

In addition, the electrical resistance welding apparatus of the present invention is easy to operate, easy to operate, and performs welding so that the welding state in the welding apparatus can be visually checked even in the case of test pressure performed to check whether the position of the movable electrode part is accurate during the welding process. Another object of the present invention is to provide a welding apparatus having an inclination so that the posture of the apparatus is inclined forward.

In addition, the present invention solves the excessive generation of spatters (melt scattering products) due to the excessive rise of the state or fixed state of the material of the welding specimen or the rated current value when welding is in progress, loss of material, reduction in the thickness of the weld, etc. It can improve the same welding defect, and it can improve various serious problems such as burns to workers or polluting the workplace, and can be welded with the naked eye without a mask. Provided with a cover means to prevent That is, an object of the present invention is to provide a welding apparatus without a mask means for protecting the eyes during welding, which appears in the electric resistance welding apparatus.

The present invention is not a simple transport means of an auxiliary wheel for movement that does not consider the floor situation in a welding factory, but solves a case where it is difficult to move because it falls on a curved surface or falls into a groove during movement, and at the same time, a quick position for various and precise welding at the welding site It is also an object to provide a transfer means of the welding device that enables movement. Specifically, the auxiliary wheel does not float on the floor even if the electric resistance welding device encounters a sudden situation on the floor surface of the workshop, that is, a depression, a protrusion, and an inclined surface while moving from one workshop to another. It also has an object to provide an electric resistance welding device to which a landing structure is applied.

An electric resistance welding apparatus according to an embodiment of the present invention for achieving the above object, in the electric resistance welding apparatus,

A welding support having a pressing shaft fixing part is formed on the upper body of the welding base formed in the center of the welding table of the upper body and the upper body having a welding table installed in the center, and a power connection part to which power is connected to one side of the welding support The formed welding fixing part and the pressing upper body supported by the pressing shaft fixed by the pressing shaft fixing part are formed on the upper part of the welding fixing part, and the pressing cylinder is formed on one side of the pressing upper body, and the lower part of the pressing upper body is formed. A pressurizing fixture for transferring and pressurizing is formed by the operation of a pressurizing cylinder, and a pressurizing part having a pressurizing power supply supplying power to one side of the pressurizing fixture is formed, and the fixing jig is fastened to the front of the welding fixture of the welding fixture with a fixed jig fastener. A jig unit 140 to form a fixing jig fixture to which power is supplied, and a pressing jig fixture provided with a pressing jig fastener on one side of the pressing fixture and fastening the pressing jig with a pressing jig fastener on the upper part of the position to be joined to the fixing jig, and the lower body Power is supplied to the power connection part of the welding fixing part to one side of the jig part and supplied to the pressurized power supply part of the jig part to supply power to the contact part by pressurization and a control unit formed so as to be joined by contact heat, the pressurizing part is the inner side of the pressurized upper body In a state where the pressurizing block pressurized by the operation of the pressurizing cylinder is combined with the pressurizing fixture, the pressurizing block is pressurized by the operation of the pressurizing cylinder, and the pressurizing jig is sequentially pressurized while the power is supplied. a welding unit for which bonding is made;

A horizontal plate having a vertical plate, a horizontal plate installed horizontally on the door opening surface of the vertical plate, a predetermined installation space is formed on the lower side, and a welding unit angle rotation stage capable of moving forward and backward by mounting the welding unit, and , A second hinge fixing member for hingedly fixing the rear of the horizontal plate so as to seal and block the welded object mounted on the angular rotation stage by covering the horizontal plate, and on both sides to open the front with the rear of the horizontal plate as an axis A cover unit comprising: a telescoping member installed; a second hinge fixing member for hinge-fixing the rear of the horizontal plate; and an upper frame for loading the welding device and having an auxiliary wheel; achieves as a movable electric resistance welding device including a.

The cover unit of the electric resistance welding apparatus according to an embodiment of the present invention for achieving the above object,

a second hinge fixing part hinged by connecting a hinge pin between the upper hinge bracket and the lower hinge bracket so that the rear side of the angular rotation stage of the horizontal plate is rotatable in the cover plate; The second hinge is installed at the bottom of the angular rotation stage to raise the angular rotation stage at a predetermined inclination angle with the axis of the second hinge as an axis to form an inclination with the rear end or release it to maintain the horizontal, and to be rotatable between the angular rotation stage bottoms. A joint part comprising a pivoting support to be installed, and a connector that is shaft-fixed with a shaft pin to the shaft hole of the rotation support, and forms the shaft pin and an insertion hole in the lower side; The upper end of the cylinder rod is inserted and connected to the insertion hole below the connector, and the cylinder body from which the cylinder rod protrudes and retracts is provided with a rotatable oscillating support at the lower end thereof, and the oscillating support for rotatably supporting the cylinder body is It can be achieved as an electric resistance welding device further comprising a; a tilting unit consisting of; a lifting unit installed with a horizontal adjustment tool for adjusting the position and the supporting bracket.

Electric resistance welding apparatus according to an embodiment of the present invention for achieving the above object,

a lower frame equipped with a driving wheel mounted on a steering and driving system and installed on an inner bottom surface of the floor to transmit power and receive power to steer and drive;

An upper frame for loading a welding device and coupled from an upper side of the lower frame, the upper frame having an auxiliary wheel integrally installed on the lower outer side of the lower frame; And

A lifting unit having a lifting frame coupled to the upper frame to contact the auxiliary wheel of the upper frame with the floor, and forming a support bracket for rotatably supporting the auxiliary wheel on the lower plate of the lifting frame, shaft hole of the lifting unit Forming a lifting plate part to which a pivot shaft installed rotatably in the rotatable shaft is fixed, a pivot part having a lifting bracket installed on the other side of the lifting plate part, and a guide frame on four sides fixed to the lower frame, and the guide It can be achieved as an electric resistance welding apparatus including a; elevating block forming a guide portion juxtaposed with guide shafts that are respectively slidably fitted in the elevating holes of the elevating brackets inside the frame.

The rotating part of the electric resistance welding apparatus according to an embodiment of the present invention for achieving the above object,

An electric resistance welding device that enables rotation of the lifting unit by rotatably installing a rotating shaft in the shaft hole of the lifting unit and fixing it with a fixing nut, and fixing the other end of the rotating shaft with a shaft closing nut to the lifting plate on the opposite side. can be achieved

As described above, the electrical resistance welding apparatus of the present invention supplies power to each jig while pressing the welding object with a pressurizing cylinder while placed in the jig, so that it is melted and welded by the heat generated from the contact surface of the welding object pressurized by energization. By adjusting the pressing force with the pressurizing cylinder accordingly, the bonding strength is improved by uniform pressurization, and by adjusting the pressurizing force with the pressurizing cylinder according to the fusion bonding by heat, the bonding strength is improved by uniform pressurization, but the worker is effectively protected from spatter. A spatter prevention device that can do this has been provided.

The present invention implements a sealed cover to protect the human body of workers from welding sparks, etc. and to be safe during welding so as to predict and determine whether or not welding is appropriate, and also allows the operator to visually check the situation inside the welding device without a mask To make this possible, it was implemented as a transparent cover means.

The present invention is to provide a welding apparatus for an electric resistance welding apparatus in a forward oblique view, which can be applied in a welding posture having an inclination while maximizing the melting principle of electric resistance heating.

The present invention uses a plurality of operation keys during welding through a control switch to selectively store any pressing force and current values desired by the user in the pressure series and the welding series or to easily modify the stored data, so that the material to be welded is Accordingly, an electric resistance welding device capable of maximizing work efficiency and improving productivity by preparing and performing welding work simply and quickly was provided.

The present invention improves the problem of secondary processing due to discoloration of the surface of soft precious metals with low melting points at high temperatures during welding, increases production speed, and enables precise control to save labor costs, and allows precise control of welding temperatures , It is possible to control the low temperature, and to provide a welding device that improves welding stability, such as speeding up the working speed.

The present invention provides a transport means of a welding device that is not only easy to move even when the working floor condition of the welding device is bad, but also that the transport device can be stably controlled.

The electric resistance welding apparatus of the present invention is easy to operate, easy to operate, and the welding apparatus is designed so that the welding state in the welding apparatus can be visually checked even in the case of test pressure performed to find out whether the position of the movable electrode part during the welding process is correct. A welding device having an inclination to tilt the posture forward is provided.

The present invention solves the excessive generation of spatters (melt scattering products) due to the excessive rise of the state or fixed state of the material of the welding specimen or the rated current value when welding is in progress, and welding such as loss of material and reduction in the thickness of the welded part It can improve defects and improve various serious problems such as burns to workers and polluting the workplace, and can be welded with the naked eye without a mask, and at the same time, it prevents spatter and light diffusion occurring during welding Provided a means of covering that can be done. That is, there is provided a welding apparatus without a mask means for protecting the eye during welding that appears in the electric resistance welding apparatus.

The present invention is not a simple auxiliary wheel transport means that does not take into account the floor situation in a welding factory, but solves a case where it is difficult to move because it falls on a curved surface or falls into a groove during movement, and at the same time, a rapid position movement for various and precise welding at the welding site It is also an object to provide a transport means of the welding device that enables the. Specifically, the auxiliary wheel does not float on the floor even if the electric resistance welding device encounters a sudden situation on the floor surface of the workshop, that is, a depression, a protrusion, and an inclined surface while moving from one workshop to another. An electric resistance welding device applied with a landing structure was provided.

1 is a perspective view of an electric resistance welding apparatus according to an embodiment of the present invention;
2 is a perspective view of an open state of the cover unit of the electric resistance welding apparatus according to the embodiment of the present invention,
3 is a side view of an electric resistance welding apparatus according to an embodiment of the present invention;
4 is an excerpt of a welding unit of an electric resistance welding apparatus according to an embodiment of the present invention;
5 is an operation view showing a welding state of an electric resistance welding apparatus according to an embodiment of the present invention;
6a and 6b are operational cross-sectional views showing the angle rotation state of the angle rotation stage of the electric resistance welding apparatus according to the embodiment of the present invention,
Figure 7 is a front view showing only the transfer unit partially omitted from the electric resistance welding apparatus according to the embodiment of the present invention,
8 is a perspective view of a lifting block of a transfer unit of an electric resistance welding apparatus according to an embodiment of the present invention;
9 is an exploded perspective view of a lifting block of a transfer unit of an electric resistance welding apparatus according to an embodiment of the present invention;
10a and 10b are explanatory views according to the running state of the transfer unit of the electric resistance welding apparatus according to the embodiment of the present invention.

Hereinafter, an electric resistance welding apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an electric resistance welding apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of an open state of the cover unit of the electric resistance welding apparatus according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention is a side view of the electric resistance welding apparatus according to, Figure 4 is an excerpt of the welding unit of the electric resistance welding apparatus according to the embodiment of the present invention, Figure 5 is an action showing the welding state of the electric resistance welding apparatus according to the embodiment of the present invention It is also

The electric resistance welding apparatus according to a preferred embodiment of the present invention is largely composed of a welding unit 100 , a cover unit 200 , and a transfer unit 300 .

First, the welding unit 100 is as shown in the accompanying drawings 1 to 4, the welding unit 100 is an upper body 113, a body portion 110 forming a lower body 111, the upper body ( 113) a welding base 121 formed on the upper portion of the welding table 112, a welding fixing unit 120, and a pressing unit 130 having a pressing cylinder 132 formed on the upper portion of the welding fixing unit 120; A fixing jig 141 in which the welding object 1 is placed is formed on the welding fixing part 120 , and the jig part 140 in which the pressing jig 144 of the pressing part 130 is formed, and the lower body 111 . It is configured to include a control unit 150 for controlling while supplying power to one side of the.

The body part 110 is composed of an upper body 113 with a welding rod 112 installed in the upper center, and a lower body 111, and the auxiliary wheel 321 of the transfer unit 300 to be described later on the lower body 111. ) to form

The welding fixing part 120 forms a welding support 122 having a pressing shaft fixing part 123 on the upper part of the welding base 121 formed in the center of the welding table 112 of the upper body 111, and the welding paper A power connection part 124 to which a power line is connected is formed above the upper pressurized upper body 131 of the earth 122 .

The pressing part 130 forms a pressing upper body 131 supported by a pressing shaft 133 fixed by a pressing shaft fixing part 123 to an upper portion of the welding fixing part 120 , and one side of the pressing upper body 131 . to form a pressurizing cylinder 132, and forming a pressurizing fixture 134 for transferring and pressurizing by the operation of the pressurizing cylinder 132 in the lower part of the pressurizing upper body 131, and supplying power to one side of the pressurizing fixture 134 It is configured to form a pressurized power supply unit (135).

Here, the pressing unit 130 is combined with the pressing fixture 134 to press the pressing block 136 for pressing the pressure cylinder 132 to the inside of the upper body 113 by the operation of the pressing cylinder 132 . It is preferable to pressurize 136 to sequentially pressurize the pressurizing jig 144 in a state in which power is supplied to perform pressurization bonding due to the bonding heat generated by the electrical resistance of the contact portion.

In addition, the pressing unit 130 is coupled to the pressing block 136 on one side of the upper side of the pressing upper body 131 to form a pressing depth measuring hole 137 that displays the depth to be pressed to the outside to form the pressing cylinder 132. It may be configured to measure the pressing depth of the pressing jig 144 that is pressed to the welding object placed in the fixing jig 141 by operation.

The jig unit 140 fastens the fixing jig 141 to the front of the welding support 122 of the welding fixing unit 120 with the fixing jig fastener 143 to form a fixing jig fastener 142 to which power is supplied. And, one side of the pressing fixture 134 is configured to form a pressing jig fixture 145 having a pressing jig 144 fastened with a pressing jig fastener 146 on the upper portion of the position to be combined with the fixing jig 141. .

The control unit 150 supplies power to the power connection part 124 of the welding fixing part 120 to one side of the lower body 110 and supplies it to the pressurized power supply part 135 of the jig part 140 to the contact part by pressurization. It is configured to connect by heat of contact by supplying power to the

Here, the control unit 150 forms the control switches 151 to supply power while controlling the voltage with a voltage control switch 152 for controlling the voltage to one side of the lower body 110, and the control switches 151 A voltage display unit 153 for displaying the voltage is formed on one side, and an opening/closing switch 154 for controlling the power of the lower body 110 is formed to adjust the voltage while supplying power to the opening/closing switch 154. It is preferable to configure so as to control the supply of power.

In this way, looking at the operation of the electrical resistance welding unit of the present invention configured as follows.

First, a welding object 1, which is a base material to be joined in a state in which the body part 110 is transported to a welding place, using an auxiliary wheel 321 formed in the lower part of the lower body 111 of the welding unit 100 to be welded. ) to one side of the fixing jig fastener 142 supported by the welding support 122 of the welding fixing part 120 on the upper part of the welding table 112 to the side of the fixing jig fastener 143 fastened with the fixing jig 141) put it in

In this way, in a state in which one side of the welding object 1 is placed on the fixing jig 141, the power is connected to the power connection part 124 formed on one side of the welding fixing part 120, and the welding base 121 is connected to the welding support ( 122) is coupled to apply power to the fixed jig 141 .

As described above, in a state in which one side of the welding object 1 is placed on the fixing jig 141, the pressing upper body 131 provided with the pressing cylinder 132 supported by the pressing shaft 133 on the welding fixing part 120 is provided. A welding object (1) to be joined by welding to the pressing fixture 134 formed under ) is placed on the other side.

In this way, in a state in which the other side of the welding object 1 is placed in the pressing jig 144, the power is connected to the pressing power supply unit 135 formed on one side of the pressing fixture 134 so that electricity is supplied to the pressing jig 144, and the pressing jig fixture Coupled to apply power to the pressure jig 144 through (145).

As described above, the control switches 151 of the control unit 150 are operated in a state where the welding object 1 to be welded is placed on the fixing jig 141 and the pressure jig 144 to supply power, and the supplied power Power is applied to the power connection unit 124 and the pressurized power supply unit 135 in a state in which the voltage of the voltage is controlled and adjusted through the voltage control switch 152 . Although not shown, a menu board for implementing a screen may be installed to display the operation status.

That is, by controlling the opening and closing switches among the control switches 151 of the lower body 110 to control the operation, the defect rate is reduced by controlling the abnormal operation in an emergency or due to overvoltage supply and overheating.

In this way, when the pressure cylinder 132 is operated in a state in which power is applied, the pressure jig 144 is combined toward the fixing jig 141 and is in contact with the joint portion of the welding object 1, and the contacted joint portion is energized while energized. According to the applied voltage, resistance heat is generated and melting begins.

As described above, in a state in which the welding object 1 is contacted to be joined by resistance heat, the pressurizing block 136 is provided while measuring the pressurizing depth at the pressurizing depth measuring hole 137 formed of the pressurized upper body 131 . (132) is operated to increase the pressing force sequentially to increase the bonding strength.

In this way, when the fusion bonding is completed, the pressurizing cylinder 132 is operated to transfer the pressurizing jig 144 combined with the fixing jig 141 to take out the welding object 1 that has been joined to complete the welding.

Therefore, as the welding object 1 is energized while being fixed to the jig part 140 and joined in a pressurized state with the pressurizing cylinder 132, the welding object itself is melt-bonded without using other materials at the time of bonding, and electric By melting only the joint portion at a low temperature due to resistance, secondary processing of the object to be welded (1) is not used, and damage to the product is minimized to improve the weld joint quality, and the pressing force is constant as pressurized by the operation of the pressure cylinder (132). To improve the bonding strength by maintaining the pressure cylinder 132, the operator does not require skill as the bonding by the operation of the pressure cylinder 132, thereby reducing the labor cost to improve productivity.

1 is a perspective view of an electric resistance welding apparatus according to an embodiment of the present invention, FIG. 3 is a side view of an electric resistance welding apparatus according to an embodiment of the present invention, and FIGS. 6a and 6b are electric resistance welding according to an embodiment of the present invention It is an action sectional view showing the declination rotation state of the declination rotation stage of the device.

The installation structure of the cover unit 200 of the electric resistance welding apparatus of the present invention according to these drawings and its operation will be described as follows.

The cover unit 200 includes a vertical plate 210 , a horizontal plate 220 , a cover plate 230 , and a tilting rod 240 .

The horizontal plate 220 is installed horizontally from the door opening means of the vertical plate 210, forms a predetermined space on the lower side, and is equipped with a welding base 121 and is provided with an angle rotation stage 221 capable of moving forward and backward. , On the lower side of the declination rotation stage 221, a lifting portion 241, a hinge bracket portion 242, a joint portion 243, a support member 244, and a horizontal adjustment tool 245 of a tilting portion 240 to be described later are provided. A vertical support 222 to support is configured.

The cover plate 230 is a hinge fixing member 232 for hingedly fixing the rear of the cover plate 230 to cover the horizontal plate 220 to seal and block the welding base 121 mounted on the angular rotation stage 221 . And, the horizontal plate 220 and the rear hinged portion 234 of the cover plate 230 as an axis to open and close the front consists of a telescopic member 231 installed on both sides of the cover plate 230. The hinge fixing portion 234 is provided on both sides by first and second hinge fixing members 234a and 234b, and the elastic member 231 includes a cylinder rod 231a and a cylinder body 231b.
The expansion and contraction member 231 is controlled as a control switch 151, and can be controlled by driving through a signal transmitted to the cylinder body 231b, and can be opened and closed by a manual operation of an operator. Of course, by scanning a predetermined signal from the sensing and display unit 235, the rotation state may be sensed, and the rotation state may be displayed with light as the sensed signal.

The tilting part 240 is a hinge pin (242a) between the upper hinge bracket (242a) and the lower hinge bracket (242b) so that the rear side of the angular rotation stage 221 of the horizontal plate 220 is rotatable within the cover plate 230. 242c) is connected to the second hinge fixing part 242, which is hinged, and the second hinge fixing part 242 is used as an axis to raise the declination rotation stage 221 at a predetermined inclination angle to form an inclination with the rear end as an axis. Alternatively, the knuckle joint part 243 and the elevating part 241 may be installed at the bottom of the angle rotation stage 221 to maintain the horizontal by releasing it.

The knuckle joint part 243 is a pivoting supporter 243a that is installed so as to be rotatable between the upper end of the lifting unit 241 and the bottom of the one-angle pivoting stage 221, and a shaft pin in the shaft hole 243d of the pivoting supporter 243a. It is shaft-fixed by 243b, and is formed as the coupler 243c in which this shaft pin 43b was formed and the insertion hole 43e was formed in the lower side.

The elevating part 241 is connected by inserting the upper end of the cylinder rod 241a into the insertion hole 243e at the lower side of the connector 243c, and the cylinder body 241b in which the cylinder rod 241a protrudes and retracts is rotatable at the lower end. The swing support 244 is installed and supported to do so.

The support member 244 for rotatably supporting the cylinder body 241b may be provided with a horizontal adjustment member 245 for adjusting the position of the swing support member 244a and the support bracket 244b.

The operation of the angle rotation stage of the electric resistance welding apparatus of the present invention will be described in accordance with the accompanying drawings Figs. 6a and 6b.

When the weld 1 is initially transferred, it is sensed as soon as it approaches the welding unit 100 and the cover plate 30 is opened. When the output signal sensed by the sensing and display means 235 is transmitted to the control switch 151, the output compared as a predetermined signal is transmitted from the control switch 151 to operate simply by driving the expansion and contraction member 231. Alternatively, the operator may manually open the cover plate 230 by holding the handle (symbol omitted). After the cover plate 230 is opened, the welding base 121 is seated on the angular rotation stage 221 . At this time, various functions such as position adjustment and center adjustment are operated in conjunction with the sensing means, and air cleaning can be performed to prevent foreign substances from entering. The cover plate 230 may be seated on the declination rotation stage 221 simultaneously with or sequentially cleaning the inside. In addition, in order to align the inclination angle of the object to be welded 1 of the welding base 121, an operation may be performed to incline the declination rotation stage 221 at a predetermined angle as shown in FIG. 6b .

That is, when the tilting unit 240 displayed on the operation menu is switched, the lifting unit 241 operates through the control switch 151 installed in the front lower part of the declination rotation stage 221 to operate the rear of the declination rotation stage 221 . The first hinge fixing member 242 may be used as an axis to raise the angle rotation stage 221 to achieve a predetermined inclination. Then, the object to be welded inside the welding base 121 mounted on the declination rotation stage 221 is tilted to one side and aligned at the same time. After a predetermined time (for example, during the detection time of the detection sensor), when it is determined that the alignment of the weld 1 is finished (determined by the operator's naked eye), the inclined state of the declination rotation stage 221 on which the carrier is mounted is restored. The control switch 151 may send a predetermined calculated output signal to the lifting unit 241 to rotate downward to the original position.

That is, when a predetermined power signal is transmitted to the cylinder body 241b of the lifting unit 241 through the control switch 151, the cylinder rod 241a in an elevated state is pulled and folded by the cylinder body 241b to the original position. Thereafter, when the declination rotation stage 221 is restored and maintained horizontally, the opening operation of the carrier door may be performed with the cover plate 230 closed.

As described above, the cover unit of the electric resistance welding apparatus of the present invention provides a spatter prevention device that can effectively protect the operator from spatter generated while pressing the welding object with a pressure cylinder in a state in which the welding object is placed in the jig, and during the welding operation. A sealed cover was implemented to protect the workers' body from welding sparks, etc. and to be safe, and a transparent cover means was provided so that the operator could visually check the situation inside the welding device without a mask.

In addition, the present invention can perform an oblique viewing posture forward so that the state of the object to be welded can be checked in a welding posture with an inclination after fusion bonding of electric resistance heating, so that the effect of visually confirming the welding state can be obtained.

In addition to the welding operation of the welding unit 100, the opening and closing operation of the cover unit allows the use of a plurality of operation keys through the control switches 151, so that any pressing force value and current value desired by the user can be applied to the pressurized series and the welding series. By making it easy to save or modify the stored data, we have provided an electric resistance welding device that can maximize work efficiency and improve productivity as welding work is performed according to the material of the object to be welded. The surface of soft precious metals are discolored at high temperatures, and the problem of secondary processing is improved, which increases the production speed, saves labor costs, enables precise control, and enables high and low welding temperatures to be controlled, working speed An electric resistance welding device that improves welding stability, such as speeding up welding, has been provided.

The installation configuration of the transfer unit 300 of the present invention according to the accompanying drawings and the operation of the electric resistance welding apparatus will be described as follows.

Of the accompanying drawings, FIG. 3 is a side view of an electric resistance welding apparatus according to an embodiment of the present invention, FIG. 7 is a front view showing only a transfer unit and partially omitted from an electric resistance welding apparatus according to an embodiment of the present invention, and FIG. 8 is an embodiment of the present invention A perspective view of a lifting block of a transfer unit of an electric resistance welding apparatus according to an embodiment, FIG. 9 is an exploded perspective view of a lifting block of a transfer unit of an electric resistance welding apparatus according to an embodiment of the present invention, and FIGS. 10a and 10b are an embodiment of the present invention It is an explanatory diagram according to the running state of the transfer unit of the electric resistance welding apparatus according to

The electrical resistance welding apparatus of the present invention shown in FIG. 3 of the drawings is divided into an upper frame 302 and a lower frame 301 .

The transfer unit 300 includes an upper frame 301 that carries and moves loads, and a lower frame 301 that has a driving force by mounting a steering and driving system, etc., and is a steering and driving system of the lower frame 301 . A driving wheel 311 is provided at the front and back of the bottom side of the lower frame 301 to move by receiving driving and steering power from the lower frame 301, and a lifting block 320 is connected between the lower frame 301 and the upper frame 302. do.

In the upper frame 302 connected in this way, auxiliary wheels 321 rotatably installed on the elevating block 320 are installed in the left and right directions, respectively, before and after each. This auxiliary wheel 321 performs a function of supporting the driving of the driving wheel 311 by being stably landing on the floor while bearing the load when the driving wheel 311 is driven by the lower frame 301 . .

In addition, the lower frame 301 can move in all directions, such as an active weight balance and a control computer, and can be lifted in up and down directions, and can move and move up and down in conjunction with a sensor device that detects the surrounding environment. , Configurations and functions that can actively cope with safety problems that occur during the disembarkation process may be included. That is, through the control computer and the sensor unit, the front black ground condition is detected and accompanied by control means capable of controlling the steering light such as continuous driving, driving stop, straight driving, left, right turn, and inclined movement as an electric signal, It may include a power supply means including. Detailed descriptions of various sensing means and signal means for such a steering and driving system will be omitted.

7 of the drawings shows a state in which the upper frame 302 and the lower frame 301 are combined, and the upper loading space is omitted. It represents the auxiliary wheel 321 connected thereto.

The lifting unit 322 and the guide unit 325 may be combined to install as shown in FIG. 8 , and in this case, the rotating shaft 3231 of the rotating unit 323 is disposed between the lifting unit 322 and the guide unit 325 . The guide shaft 3252 of the guide 325 is rotatably connected to the lifting bracket 3232 of the rotating part 323 at the same time as the lifting block 320 is vertically assembled so as to be elevating and lowering.

The lower frame 301 coupled through the elevating block 320 is mounted with a steering and driving system and transmits power to the driving wheel 311 . The inner side of the lower frame 301 may be installed to steer and drive the driving wheel 311 , and the upper frame 302 is loaded with a welding device and is coupled from above the lower frame 301 . The auxiliary wheel 321 of the lifting unit 322 installed in the upper frame 302 is installed below the upper frame 302 .

In the accompanying drawings, the lifting block 320 as shown in FIGS. 8 and 9 can be largely divided into a lifting unit 322 , a rotating unit 323 , and a guide unit 325 .

The lifting unit 322 forms an upper plate body 3224 coupled to the upper frame 302, and four sides of the lifting frame 3221 to form a support bracket 3226 for supporting the auxiliary wheel 321 on the lower plate body 3223. ) can be formed. One side of the lifting frame 3221 forms an opening, and the other side is blocked by forming a support wall part 3225 .

A shaft hole 3222 is formed in the support wall portion 3225 , a rotation shaft 3231 is rotatably installed, and is fastened as a fixing nut 324 .

A support bracket 3226 is installed on the lower plate body 3223 of the elevating frame 3221 so that the auxiliary wheel 321 is rotatably installed.

The rotating part 323 includes a rotating shaft 3231 axially installed in the shaft hole 3222 of the lifting unit 322 , a lifting plate part 3233 in which the pivoting shaft 3231 is installed, and one side of the lifting plate part 3233 . It consists of at least one lifting bracket 3232 installed in the axial hole 3222 of the lifting unit 322, the rotation shaft 3231 is rotatably installed.

The guide part 325 forms the guide frame 3251 of four sides forming the upper plate body 3253 fixed to the lower frame 301, and the lifting bracket 3232 from the inside of the guide frame 3251 in the vertical direction. The guide shaft 3252, which is elevated and lowered by inserting it in the axial direction to slip, can be arranged side by side.

The rotating part 323 is installed so that the rotating shaft 3231 is rotatable in the shaft hole 3222 of the elevating part 322, and also fixes one end with a fixing nut 324, and the other end of the rotating part 323. By fixing the shaft closing nut 3234 to the other side of the lifting plate portion 3233, it can be installed so that the free rotation of the lifting portion 322 is possible. 8 of the accompanying drawings shows the coupling state after such assembly.

In addition, the rotating part 323 is fixed to the rotating shaft 3231 in the shaft hole 3222 of the elevating part 322 with a rotatable fixing nut 324, and the other end of the rotating shaft 3231 is a rotating part on the opposite side. It can be fixed with a nut member 3234 for fixing the shaft by penetrating so as to be fixed to the 323 .

In addition, the lifting bracket 3232 may be made to slip by inserting a slip member (not shown) in the lifting hole 3235 in which the guide shaft 3252 is vertically axially installed. The slip member can be applied to ball bearings and bushings. Therefore, the guide shaft 3252 can act as a flexible elevating and lowering within the elevating hole 3235 . Therefore, the auxiliary wheel 321 can come into contact with the floor by descending the moment it is lifted off the floor, so that the driving wheel 311 integrally installed on the lower frame 301 can run without being affected by the contact. .

Therefore, even when the working floor condition of the electric resistance welding apparatus of the present invention is not good when moving to the welding position, the present invention is not only easy to move even when the working floor condition of the welding apparatus is not good, but also welding in which the transfer device can be stably controlled A means of transporting the device was provided.

The electric resistance welding apparatus of the present invention is easy to operate, easy to operate, and the welding apparatus is designed so that the welding state in the welding apparatus can be visually checked even in the case of test pressure performed to find out whether the position of the movable electrode part during the welding process is correct. A welding device having an inclination to tilt the posture forward is provided.

The present invention solves the excessive generation of spatters (melt scattering products) due to the excessive rise of the state or fixed state of the material of the welding specimen or the rated current value when welding is in progress, and welding such as loss of material and reduction in the thickness of the welded part It can improve defects and improve various serious problems such as burns to workers and polluting the workplace, and can be welded with the naked eye without a mask, and at the same time, it prevents spatter and light diffusion occurring during welding Provided a means of covering that can be done. That is, there is provided a welding apparatus without a mask means for protecting the eye during welding that appears in the electric resistance welding apparatus.

The present invention is not a simple conveying wheel that does not take into account the floor situation in a welding factory, but solves a case where it is difficult to move due to falling on a curved surface or falling into a groove during movement, and at the same time, a rapid position movement for various and precise welding at the welding site It is to provide a transport means of the welding device that enables the. Specifically, the transfer wheel does not float on the floor even if the electric resistance welding device encounters a sudden situation on the floor surface of the workshop, that is, a depression, a protrusion, and an inclined surface while moving from one workshop to another. It is to provide an electric resistance welding device to which a stable landing structure is applied. That is, the transfer unit 300 coupled to the lower side of the welding apparatus provides a transfer means of the welding apparatus stably controllable by smoothly moving the inclined surfaces such as high and low protrusions and grooves of the floor.

Furthermore, due to the transfer unit 300 implemented in the electric resistance welding apparatus of the present invention, the electric resistance welding apparatus can be moved to another work site in various and complicated floor conditions at the welding site, but as described above, various unmanned control means and sensing The electric resistance welding apparatus of the present invention, including means, positioning means, and the like, will be able to move unmanned according to the driving of the transfer unit 300 .

While the foregoing relates to implementations of the invention, additional implementations of the invention may be devised without departing from the basic scope thereof, which is determined by the following claims.

100: welding unit, 110: body part, 111: lower body, 112: welding die, 113: upper body,
120: welding fixing part, 121: welding base, 122: welding support, 123: pressing shaft fixing part,
124: power connection unit, 130: pressurized unit, 131: pressurized upper body, 132: pressurized cylinder,
133: pressure shaft, 134: press fixture, 135: pressurized power supply unit, 136: pressurized block,
137: pressure depth measuring sphere, 140: jig portion, 141: fixed jig, 142: fixed jig fixture,
143: fixing jig fastener, 144: pressure jig, 145: pressure jig fastener,
146: pressure jig fastener, 150: control unit, 151: control switches,
152: voltage control switch, 2 00: cover unit, 210: vertical plate,
220: horizontal plate, 221: angle rotation stage, 222: vertical support,
230: cover plate, 231: elastic member, 231a: cylinder rod, 231b: cylinder body,
234: hinge high portion, 234a, 234b: first, second hinge member,
235; Sensing and display unit, 240: tilting unit, 241: elevating unit, 241a: cylinder rod,
241b: cylinder body, 242: hinge bracket part, 242a: upper hinge bracket,
242b: hinge pin, 242c: lower hinge bracket, 243: joint member, 243a: rotating support,
243b: shaft pin, 243c: connector, 243d: shaft hole, 243e: insertion hole, 244: support member,
244a: swing support, 244b: support bracket, 245: horizontal adjustment mechanism. 300: transfer unit,
301: lower frame, 302: elevating frame, 311: driving wheel, 321: auxiliary wheel,
320: elevating block, 322: elevating unit, 3221: elevating frame, 3222: shaft construction,
3223: lower plate body, 3224: upper plate body, 3225: support wall part, 3226: support bracket, 323: rotating part,
3231: rotation shaft, 3232: lifting bracket, 3233: lifting plate part, 3234: shaft fixing nut member,
324: fixing nut, 325: guide part, 3251: guide frame, 3252: guide shaft,

Claims (4)

In the electric resistance welding apparatus,
A welding support having a pressing shaft fixing part is formed on the upper body of the welding base formed in the center of the welding table of the upper body and the upper body having the welding table installed in the center, and a power connection part to which the power is connected to one side of the welding support is formed. The formed welding fixing part and the pressing upper body supported by the pressing shaft fixed by the pressing shaft fixing part are formed on the upper part of the welding fixing part, and the pressing cylinder is formed on one side of the pressing upper body, and in the lower part of the pressing upper body. A pressurizing fixture for conveying and pressurizing is formed by the operation of a pressurizing cylinder, and a pressurizing part having a pressurizing power supply supplying power to one side of the pressurizing fixture is formed, and the fixing jig is fastened to the front of the welding fixture of the welding fixture with a fixed jig fastener. to form a fixing jig fixture to which power is supplied, and a jig portion having a pressure jig fixture provided with a pressure jig fastener fastening the pressure jig to the upper part of the position to be combined with the fixing jig on one side of the pressure fixture, and one side of the lower body By supplying power to the power connection part of the welding fixing part and supplying power to the pressurizing power supply part of the jig part, it consists of a control unit formed to supply power to the contact part by pressurization to join by contact heat, and the pressurization part is pressurized from the inside of the pressurized upper body. Combining the pressurizing block pressurized by the operation of the cylinder with the pressurizing fixture, the pressurizing block is pressurized by the operation of the pressurizing cylinder and the pressurizing jig is sequentially pressurized while the power is supplied. welding unit;
A horizontal plate having a vertical plate, a horizontal plate installed horizontally on the door opening surface of the vertical plate, a predetermined installation space is formed on the lower side, and a welding unit angular rotation stage capable of moving forward and backward by mounting the welding unit, and , A cover plate hinged at the rear of the horizontal plate to cover and block the welded object mounted on the angular rotation stage by covering the horizontal plate, and the rear side of the cover plate as first and second hinged members a cover unit comprising a hinged portion rotatably installed, and telescopic members installed on both sides to open the front to the rear of the cover plate as an axis; and
The upper plate body is coupled to the upper frame, and the lower plate body is composed of a four-sided elevating frame having support brackets for supporting the auxiliary wheels, and one side of the elevating frame forms an opening and the other side forms a support wall portion having a shaft hole. It consists of a lifting unit, a rotating shaft axially installed in the shaft hole of the lifting unit, a lifting plate unit on which the rotating shaft is installed, and at least one lifting bracket installed on one side of the lifting plate unit. A rotating part that can be installed and a guide frame on four sides forming the upper plate body fixed to the lower frame are formed, and the guide shaft for elevating and lowering is formed by inserting the guide shaft in the axial direction so as to slip on the lifting bracket in the vertical direction from the inside of the guide frame. a transfer unit comprising a guide unit arranged side by side;
Electric resistance welding device comprising a. delete According to claim 1,
The rotating part,
Electricity characterized in that the rotation shaft is rotatably installed in the shaft hole of the lifting unit and fixed with a fixing nut, and the other end of the rotation shaft is fixed with a shaft closing nut to the lifting plate on the opposite side to enable rotation of the lifting unit resistance welding equipment. According to claim 1, wherein the cover unit,
a second hinge bracket part hinged by connecting a hinge pin between the upper hinge bracket and the lower hinge bracket so that the rear side of the angular rotation stage of the horizontal plate is rotatable in the cover plate;
The hinge bracket part is installed at the bottom of the angular rotation stage to raise the angular rotation stage at a predetermined inclination angle to make an inclination with the rear end as the axis, or to release it to maintain the horizontal, and the rotation is installed so that it can be rotated between the bottom of the angular rotation stage A knuckle joint portion comprising a support and a connector that is shaft-fixed with a shaft pin to the shaft hole of the pivoting support, the shaft pin is formed and an insertion hole is formed in the lower side;
The upper end of the cylinder rod is inserted and connected to the insertion hole below the connector, and the cylinder body from which the cylinder rod protrudes and retracts is provided with a rotatable oscillating support at the lower end thereof, and the oscillating support for rotatably supporting the cylinder body is a tilting unit comprising a support bracket and a lifting unit installed with a horizontal adjustment tool for adjusting the position;
Electrical resistance welding device further comprising a.

Images