KR100853617B1 - A work compression device and method for welding system - Google Patents

A work compression device and method for welding system Download PDF

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Publication number
KR100853617B1
KR100853617B1 KR1020080026739A KR20080026739A KR100853617B1 KR 100853617 B1 KR100853617 B1 KR 100853617B1 KR 1020080026739 A KR1020080026739 A KR 1020080026739A KR 20080026739 A KR20080026739 A KR 20080026739A KR 100853617 B1 KR100853617 B1 KR 100853617B1
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South Korea
Prior art keywords
pressure
shaft
pressing
pressurizing
block
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KR1020080026739A
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Korean (ko)
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김유찬
임성주
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김유찬
임성주
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/035—Aligning the laser beam
    • B23K26/037—Aligning the laser beam by pressing on the workpiece, e.g. pressing roller foot
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/0869—Devices involving movement of the laser head in at least one axial direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/10—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0258—Electric supply or control circuits therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426—Fixtures for other work

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Resistance Welding (AREA)

Abstract

An automatic pressure adjusting apparatus and an automatic pressure adjusting method for the pressurization of workpieces are provided to prevent deformation of the workpieces and generation of welding flaws at the same time by measuring pressurizing force applied to workpieces in real-time such that a constant pressurizing force is always applied to the workpieces and by decreasing a change in the pressurizing force using elastic force of a compression spring. An automatic pressure adjusting apparatus for the pressurization of workpieces comprises a pressurizing roller(1) for pressurizing workpieces, a pressurizing shaft(2) with which the pressurizing roller is joined, an LM guide(8) which guides a movement of the pressurizing shaft, and is fixed to a body(10), a pressurizing block(3) for applying a pressurizing force to the pressurizing shaft, a pressure sensor(4) for sensing a pressure applied to the pressurizing shaft, a ball screw(5) for moving the pressurizing block, a servo motor(6) for rotating the ball screw, an encoder(7) for sensing a movement amount of the servo motor, and a control part for adjusting the pressurizing force by operating the servo motor according to a pressure value sensed by the pressure sensor.

Description

자동압력 조정식 소재 가압장치 및 방법{A work compression device and method for welding system}Automatic pressure regulating material pressurizing device and method {A work compression device and method for welding system}

본 발명은 소재 가압장치에 관한 것으로서, 더욱 상세하게는 레이저 용접시 용접하고자 하는 소재(모재)끼리 간격(틈)이 생기지 않도록 자동으로 가압하는 장치로서 소재의 성질과 그 형태에 따라 가압력을 조절할 수 있는 자동압력 조정식 소재 가압장치 및 방법이다.The present invention relates to a material pressurizing device, and more specifically, as a device for automatically pressurizing such that there is no gap (gap) between materials to be welded during laser welding, the pressing force can be adjusted according to the nature and shape of the material. Automatic pressure regulating material pressurizing device and method.

종래의 소재 가압장치로서는 모터를 이용한 것으로서, 일본국 특개평9-47881호와 대한민국 등록특허 제631261호에 개시되어 있는 장치들이 있다. 이런 가압장치들은 모터의 회전을 가압축의 왕복운동으로 변환시키는 볼 나사기구로 직접 전달함으로써 가압력을 가감하고 있으나, 바닥면에서 높낮이가 미세하게라도 변화되는 소재의 경우 그 높낮이에 따라 가압력이 급격히 차이가 남으로 인해 균일한 용접면을 얻을 수 없을 뿐만 아니라 소재의 높이가 바닥면에서 조금만 높게 되어도 소재에 가해지는 압력이 커져서 소재형상 변형이 일어나거나 반대로 조금만 낮게 되면 적절한 압력이 소재에 가해지지 않아 용접불량이 발생할 위험이 높다.As a conventional material pressurization device using a motor, there are devices disclosed in Japanese Patent Laid-Open No. 9-47881 and Korean Patent No. 612661. These pressurizing devices are applied to the ball screw mechanism that converts the rotation of the motor into a reciprocating motion of the pressurization shaft to directly reduce or decrease the pressing force. However, in case of a material whose height is minutely changed at the bottom, the pressing force varies rapidly according to the height. Not only does it prevent the uniform welding surface, but even if the height of the material rises slightly from the floor, the pressure applied to the material increases, resulting in deformation of the shape of the material. The risk of this is high.

또 다른 소재 가압장치로서는 대한민국 특허공개 제2004-0000995호와 같은 공압실린더를 사용한 장치가 있다. 이런 장치는 공압실린더를 사용함으로 인해 전술한 모터를 사용한 소재 가압장치보다 정밀한 가압력 조절이 이루어지기가 힘들며 공압실린더의 가동에 사용되는 공기를 압축하기 위해 컴프레서 등의 부가적인 장치가 필요하며 반응속도가 느려 가압력을 신속히 변화시키기가 어려운 단점이 있다.Another material pressurizing device is a device using a pneumatic cylinder, such as Korea Patent Publication No. 2004-0000995. Because of the use of pneumatic cylinders, these devices are more difficult to control the pressing force than the material pressurization device using the above-mentioned motors, and additional devices such as compressors are needed to compress the air used to operate the pneumatic cylinders. There is a disadvantage that it is difficult to change the pressing force quickly.

또 다른 소재 가압장치로서는 대한민국 공개특허 제2005-0118934호에 개시되어 있는 압축스프링을 사용한 가압장치가 있다.Another material pressurization apparatus is a pressurization apparatus using a compression spring disclosed in the Republic of Korea Patent Publication No. 2005-0118934.

이런 소재 가압장치는 단순히 압축스프링의 탄성력으로만 가압력을 조절할 수 있으므로 정확한 압력조절이 불가능하며 이 또한 소재의 높낮이 차가 있을 때에는 소재변형 및 용접불량이 발생하게 된다.Since the material pressurization device can simply adjust the pressing force only by the elastic force of the compression spring, accurate pressure control is impossible. Also, when the height difference of the material is different, the material deformation and welding defect occur.

따라서, 본 발명은 상술한 문제점을 해결하고자 소재에 가해지는 가압력을 실시간으로 측정하여 소재에 가해지는 압력변화에 신속히 대응하여 항상 일정한 가압력이 소재에 작용하도록 하여 소재형상 변형 및 용접불량의 발생을 미연에 방지할 수 있는 자동압력 조정식 소재 가압장치 및 방법을 제공하는데 그 목적이 있다.Accordingly, the present invention measures the pressing force applied to the material in real time to solve the above-mentioned problems and responds quickly to the pressure change applied to the material so that a constant pressing force always acts on the material, thus preventing material shape deformation and welding failure. It is an object of the present invention to provide an automatic pressure regulating material pressurizing device and method that can prevent.

또한, 가압블록 내에 압축스프링을 형성하여 소재의 높이가 급격히 높아지거나 낮아져 소재에 많거나 적은 힘이 가해지더라도 상기 압축스프링의 탄성력에 의해 가압력의 변화를 줄임으로써 소재의 변형을 방지함과 동시에 용접불량을 방지한 자동압력 조정식 소재 가압장치 및 방법을 제공하는데 또 다른 목적이 있다.In addition, by forming a compression spring in the pressure block to increase or decrease the height of the material rapidly, even if a large or small force is applied to the material by reducing the change in the pressing force by the elastic force of the compression spring to prevent deformation of the material and at the same time welding failure Another object of the present invention is to provide an automatic pressure regulating material pressurizing device and method.

본 발명에 의한 자동압력 조정식 소재 가압장치 및 방법은 로봇에 의해 자동용접시에 1차적으로 소재에 가해지는 가압력을 실시간으로 측정하여 소재에 가해지는 압력변화에 신속히 대응하여 항상 일정한 가압력이 소재에 작용하도록 하여 소재변형 및 용접불량의 발생을 미연에 방지할 수 있으며, 2차적으로는 가압블록 내에 압축스프링을 형성하여 소재의 높이가 급격히 높아지거나 낮아져 소재에 소망하는 힘보다 많거나 적은 힘이 가해지더라도 상기 압축스프링의 탄성력에 의해 가압력의 변화를 줄임으로써 소재형상 변형을 방지하고 용접불량을 방지한다.The automatic pressure regulating material pressurizing device and method according to the present invention measures the pressing force applied to the material primarily during automatic welding by a robot in real time, and responds quickly to the pressure change applied to the material so that a constant pressing force always acts on the material. It is possible to prevent material deformation and welding defects in advance, and secondly, by forming a compression spring in the pressure block, the height of the material increases or decreases rapidly, even if more or less force is applied to the material. By reducing the change in the pressing force by the elastic force of the compression spring to prevent the deformation of the material shape and to prevent welding failure.

본 발명은 소재 가압장치에 관한 것으로서, 더욱 상세하게는 레이저 용접시 용접하고자 하는 소재(모재)끼리 간격(틈)이 생기지 않도록 자동으로 가압하는 장치로서 소재의 성질과 그 형태에 따라 가압력을 조절할 수 있는 자동압력 조정식 소재 가압장치 및 방법이다.The present invention relates to a material pressurizing device, and more specifically, as a device for automatically pressurizing such that there is no gap (gap) between materials to be welded during laser welding, the pressing force can be adjusted according to the nature and shape of the material. Automatic pressure regulating material pressurizing device and method.

더욱 상세하게는, 본 발명은 서보모터의 회전력을 볼스크류로 전달하여 가압력을 발생시키되, 상기 볼스크류에 의해 이동되는 가압블록을 형성하며, 상기 가압블록에 의해 가압되는 가압축과, 상기 가압축에 결합되며 소재를 가압하는 가압롤러를 형성하되, 상기 가압블록과 가압축 사이에는 압력센서를 형성하여 상기 압력센서에서 센싱되는 가압력을 실시간 측정하여 측정된 가압력의 센싱값을 제어부로 전송하고 상기 제어부에서는 초기입력값과 비교하여 가압력의 가감을 계산한 뒤 서보모터를 동작시켜 가압력을 가감하는 것이 자동압력 조정식 소재 가압장치 및 방법이다.More specifically, the present invention transmits the rotational force of the servomotor to the ball screw to generate a pressing force, to form a pressing block which is moved by the ball screw, the pressing shaft is pressed by the pressing block, and the pressing shaft The pressure roller is coupled to the pressurizing roller to pressurize a material, and a pressure sensor is formed between the pressure block and the pressure shaft to measure a pressing force sensed by the pressure sensor in real time to transmit a sensing value of the pressing force to the controller. In the automatic pressure control material pressurizing device and method, the pressure is applied to the servomotor by calculating the acceleration / deceleration compared with the initial input value and then operating the servomotor.

이하, 첨부된 도면에 의해 본 발명의 바람직한 실시예를 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention by referring to the accompanying drawings in detail as follows.

도 1은 본 발명의 구성예시도이고, 도 2는 도 1의 평면도로서, 본 발명에 의한 자동압력 조정식 소재 가압장치는 소재를 가압하는 가압롤러(1)와, 상기 가압롤 러(1)가 결합되는 가압축(2)과, 상기 가압축(2)의 이동을 가이드해주며 몸체(10)에 고정결합되어 있는 LM가이드(8)와, 상기 가압축(2)에 가압력을 주는 가압블록(3)과, 상기 가압축(2)에 가해지는 압력을 센싱하는 압력센서(4)와, 상기 가압블록(3)을 이동시켜주는 볼스크류(5)와, 상기 볼스크류(5)를 회동시키는 서보모터(6)와, 상기 서보모터(6)의 이동량을 감지하는 엔코더(7)와, 상기 압력센서(4)에서 센싱된 값에 따라 서보모터(6)를 가동시켜 가압력을 조정하는 제어부(도시하지 않음)를 포함하여 구성되어 있다.Figure 1 is an exemplary view of the configuration of the present invention, Figure 2 is a plan view of Figure 1, the automatic pressure adjustable material pressing device according to the present invention is a pressure roller (1) for pressing the material and the pressure roller (1) is coupled The pressing shaft 2, the LM guide 8 which guides the movement of the pressing shaft 2 and is fixedly coupled to the body 10, and the pressing block 3 for applying a pressing force to the pressing shaft 2 ), A pressure sensor 4 for sensing the pressure applied to the pressure shaft 2, a ball screw 5 for moving the pressure block 3, and a servo for rotating the ball screw 5). Control unit for adjusting the pressing force by operating the motor (6), the encoder (7) for detecting the movement amount of the servomotor (6), and the servomotor (6) in accordance with the value sensed by the pressure sensor (4) Not included).

미설명부호는 감속기(9), 리미트스위치(15), 커플링(16), 커버(17) 및 지지블록(18) 및 베어링(19)이다.Unexplained symbols are the speed reducer 9, the limit switch 15, the coupling 16, the cover 17 and the support block 18 and the bearing 19.

먼저, 가압롤러(1)는 가압축(2)에 회전이 가능하도록 결합되는 것이 바람직한데, 상기 가압롤러(1)와 가압축(2) 사이에는 원주방향의 힘을 잘 지지할 수 있도록 레이디얼 베어링(19)을 형성하는 것이 적합하며, 도시된 바와 같이 한 개 이상의 베어링을 조합하여 사용할 수도 있다.First, the pressure roller 1 is preferably coupled to the pressing shaft 2 so as to be rotatable, and the radial pressure between the pressing roller 1 and the pressing shaft 2 can be well supported in the circumferential direction. It is suitable to form the bearings 19, and one or more bearings may be used in combination as shown.

상기 가압축(2)은 몸체(10)에 형성된 LM가이드(8)를 따라 전후 이동이 가능한데, 상기 LM가이드(8)는 일반적인 레일이나 도브테일(dove tail) 형태의 레일로도 형성할 수도 있다. The pressing shaft 2 can be moved back and forth along the LM guide 8 formed on the body 10, the LM guide 8 may be formed of a rail in the form of a general rail or dove tail (dove tail).

상기 가압축(2)의 일측에는 가압축(2)에 가압력을 가하는 가압블록(3)이 형성되어 있으며, 상기 가압블록(3)과 가압축(2) 사이에는 압력센서(4)가 형성되는 데, 상기 압력센서(4)는 가압축(2)에 가해지는 가압블록(3)의 압력을 실시간으로 센싱하여 그 값을 제어부(도시하지 않음)로 보내게 된다. 상기 제어부는 몸체(10)의 일측에 리모컨의 형태로 형성할 수도 있고 로봇 용접장치(30)의 일측에 형성할 수도 있다.One side of the pressure shaft (2) is formed with a pressure block (3) for applying a pressing force to the pressure shaft (2), the pressure sensor (4) is formed between the pressure block (3) and the pressure shaft (2) For example, the pressure sensor 4 senses the pressure of the pressure block 3 applied to the pressure shaft 2 in real time and sends the value to the controller (not shown). The control unit may be formed in the form of a remote control on one side of the body 10 or may be formed on one side of the robot welding device (30).

상기 가압블록(3)은 볼스크류(5)에 의해 이동되는데 상기 볼스크류(5)는 본 발명에 의한 소재의 가압이 지면에 대해 가파르게 경사진 상태에서 주로 이루어지므로 마찰저항이 커서 잘 흘러내리지 않는 TM스크류를 사용할 수도 있다.The pressure block 3 is moved by the ball screw 5, the ball screw 5 is mainly made in a state in which the pressure of the material according to the present invention is inclined steeply with respect to the ground, the friction resistance is large and does not flow well TM screw can also be used.

상기 서보모터(6)는 볼스크류(5)와 커플링(16)으로 연결되는 것이 바람직하며, 서보모터(6)의 출력축에는 감속기(9)가 형성되어 서보모터(6)의 힘을 증대시킬 수 있어야 한다.The servo motor 6 is preferably connected to the ball screw 5 and the coupling 16, the reducer 9 is formed on the output shaft of the servo motor 6 to increase the force of the servo motor (6). It should be possible.

상기 서보모터(6)의 이동량은 서보모터(6)의 일측에 형성된 엔코더(7)에 의해 측정하고 측정된 값은 제어부로 전송되어 정확한 제어가 이루어진다.The movement amount of the servomotor 6 is measured by the encoder 7 formed on one side of the servomotor 6, and the measured value is transmitted to the controller to perform accurate control.

도 3은 본 발명의 타실시예시도이고, 도 4는 도 3의 일부분확대도로서, 상기 가압블록(3) 내에 고정샤프트(11) 및 압축스프링(12)을 형성하고, 상기 고정샤프트(11)의 일측은 압력센서(4)에 형성된 체결부재(13)에 의해 고정되고 타측은 자유로운 외팔보의 상태에서 가압블록(3)의 움직임을 고정샤프트(11)에 결합되어 있는 너트(14)에 의해 제한해주는데, 상기 가압블록(3)은 고정샤프트(11)에 의해 관통되어 상기 고정샤프트(11)와는 내면이 접촉되어 전후진되는 것이다. Figure 3 is another embodiment of the present invention, Figure 4 is a partially enlarged view of Figure 3, forming a fixed shaft 11 and the compression spring 12 in the pressure block 3, the fixed shaft 11 One side of the) is fixed by the fastening member 13 formed in the pressure sensor 4 and the other side by the nut 14 coupled to the fixed shaft 11 to the movement of the pressure block (3) in the state of the free cantilever. Limiting, the pressing block (3) is penetrated by the fixed shaft 11 is to be moved forward and backward with the inner surface and the fixed shaft (11).

즉, 본 실시예는 상술한 실시예와는 달리 가압블록(3)이 가압축(2)을 직접 가압하는 것이 아니라 가압블록(3)이 가압롤러(1) 쪽으로 전진하여 압력이 가해지면 압축스프링(12)이 압축되면서 그 반발탄성력으로 고정샤프트(11)를 가압롤러(1) 쪽으로 가압하게 되고 상기 고정샤프트(11)가 압력센서(4) 및 가압축(2)을 가압하게 된다. That is, unlike the above-described embodiment, the compression block 3 does not directly press the pressing shaft 2, but the pressing block 3 moves forward toward the pressing roller 1, and when the pressure is applied, the compression spring is applied. As the 12 is compressed, the fixed shaft 11 is pressed against the pressure roller 1 by the resilient elastic force, and the fixed shaft 11 presses the pressure sensor 4 and the pressure shaft 2.

따라서, 소재 안착면에 대해 소재의 높이가 높아져 가압블록(3)과 소재와의 거리가 가까워지면 가압력이 급격히 커질 수 있는데, 상기 압축스프링(12)이 압축되면서 가압력의 일부를 흡수하게 되므로 소재의 변형을 어느 정도 방지할 수 있다.Therefore, when the height of the material increases with respect to the material seating surface and the distance between the pressure block 3 and the material approaches, the pressing force may increase rapidly. As the compression spring 12 is compressed, a portion of the pressing force is absorbed as the compression spring 12 is compressed. The deformation can be prevented to some extent.

반대로, 소재의 높이가 낮아져 가압블록(3)과 소재와의 거리가 멀어지더라도 가압력이 압축스프링(12)의 탄성력으로 인해 급격히 줄어들지 않으므로 용접불량이 발생할 위험을 줄일 수 있다.On the contrary, even if the height of the material is lowered and the distance between the pressure block 3 and the material is far, the pressing force does not decrease rapidly due to the elastic force of the compression spring 12, thereby reducing the risk of welding failure.

상기 몸체(10)의 일측에는 리미트스위치(15)를 형성하여 가압블록(3)의 이동량을 제어할 수 있는데, 이는 서보모터(6)와 압력센서(4) 등의 오작동으로 인해 가압블록(3)의 전후진이 설정치를 초과하게 되면 비상정지시킬 수 있는 스위치이다.One side of the body 10 may be formed a limit switch 15 to control the amount of movement of the pressure block (3), which is the pressure block (3) due to malfunction of the servo motor 6 and the pressure sensor (4) ) Is a switch to make emergency stop when forward and backward of the set value is over.

상기 서보모터(6)의 축과 볼스크류(5) 사이에는 커플링(16)을 형성하여 축과 볼스크류의 조립성을 향상시킬 수 있다.Coupling 16 may be formed between the shaft of the servomotor 6 and the ball screw 5 to improve the assemblability of the shaft and the ball screw.

도 5는 본 발명의 사용상태예시도로서, 본 발명의 작용을 살펴보면, 레이저 용접시 소재를 가압할 가압력의 초기 설정값을 정해놓으면 서보모터(6)가 동작하여 볼스크류(5)를 회전시키게 되고 상기 볼스크류(5)에 의해 가압블록(3)이 이동되면서 압력센서(4)와 가압축(2)을 가압하게 되고 상기 가압축(2)에 결합된 가압롤러(1)가 소재를 가압하게 된다.5 is an exemplary view of the use state of the present invention. Looking at the operation of the present invention, if the initial setting value of the pressing force to pressurize the material during laser welding is set, the servomotor 6 operates to rotate the ball screw 5. The pressure block 3 is moved by the ball screw 5 to pressurize the pressure sensor 4 and the pressure shaft 2, and the pressure roller 1 coupled to the pressure shaft 2 pressurizes the material. Done.

또 다른 실시예에서는 볼스크류(5)에 의해 가압블록(3)이 이동되면서 압축스프링(12)을 압축하게 되고 상기 압축스프링(12)의 반발탄성력으로 고정샤프트(11)를 가압하여 상기 고정샤프트(11)가 압력센서(4)와 가압축(2)을 가압하게 된다.In another embodiment, the pressure block 3 is moved by the ball screw 5 to compress the compression spring 12 and press the fixed shaft 11 by the resilient elastic force of the compression spring 12 to fix the fixed shaft. 11 pressurizes the pressure sensor 4 and the pressure shaft 2.

이때, 압력센서(4)의 센싱값이 초기설정값과 일치하게 되면 제어부는 서보모터(6)의 작동을 멈추게 되고 용접장치(30)가 소재의 용접을 진행하게 된다.At this time, when the sensing value of the pressure sensor 4 is consistent with the initial set value, the control unit stops the operation of the servomotor 6 and the welding device 30 proceeds to weld the material.

용접장치(30)에 의해 용접이 진행되는 동안 압력센서(4)에 의해 센싱되는 압력값이 초기 설정값의 범위를 넘어서게 되면 제어부에서 서보모터(6)를 동작시켜 설정값의 범위 내에 들도록 가압블록(3)을 이동시키게 된다.If the pressure value sensed by the pressure sensor 4 during the welding process by the welding device 30 exceeds the range of the initial setting value, the control unit operates the servomotor 6 to be within the range of the setting value. (3) will be moved.

예로서, 소재의 가압력 초기 설정값이 10kgf/cm2이고, 허용오차범위가 ±1kgf/cm2 라면, 압력센서(4)에서 센싱된 값이 10kgf/cm2가 되도록 서보모터(6)가 동작하여 가압블록(3)을 이동시킴으로써 가압력을 맞추고, 용접이 진행될 때 센싱되는 값이 9~11kgf/cm2의 범위를 벗어나게 되면 서보모터(6)가 다시 동작하여 가압블록(3)을 전후진 시킴으로써 소재가 상기 범위 내에서 가압될 수 있도록 한다.For example, the pressing force initial value of the material is 10 kgf / cm 2 , If the tolerance range is ± 1kgf / cm 2 , the servomotor 6 operates to move the pressure block 3 so that the value sensed by the pressure sensor 4 becomes 10kgf / cm 2 , and the welding is performed. When the sensed value is out of the range of 9 ~ 11kgf / cm 2 The servomotor 6 is operated again to advance the pressure block (3) so that the material can be pressed within the above range.

도 1은 본 발명의 구성예시도1 is a configuration example of the present invention

도 2는 도 1의 평면도2 is a plan view of FIG. 1

도 3은 본 발명의 타실시예시도Figure 3 is another embodiment of the present invention

도 4는 도 3의 일부분확대도4 is an enlarged view of a portion of FIG. 3;

도 5는 본 발명의 사용상태예시도5 is an exemplary state of use of the present invention

< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>

1. 가압롤러 2. 가압축 3. 가압블록1. Pressing roller 2. Pressing shaft 3. Pressing block

4. 압력센서 5. 볼스크류 6. 서보모터4. Pressure sensor 5. Ball screw 6. Servo motor

7. 엔코더 8. LM가이드 9. 감속기7. Encoder 8. LM Guide 9. Reducer

10. 몸체 11. 고정샤프트 12. 압축스프링10. Body 11. Fixed shaft 12. Compression spring

13. 체결부재 14. 너트 15. 리미트스위치13. Fastening member 14. Nut 15. Limit switch

16. 커플링 17. 커버 18. 지지블록16. Coupling 17. Cover 18. Support Block

19. 베어링 20. 가압장치19. Bearing 20. Pressurizing device

30. 용접장치 40. 소재30. Welding device 40. Material

Claims (5)

소재 가압장치에 있어서, In the material pressurizing device, 소재를 가압하는 가압롤러(1)와, 상기 가압롤러(1)가 결합되는 가압축(2)과, 상기 가압축(2)의 이동을 가이드해주며 몸체(10)에 고정결합되어 있는 LM가이드(8)와, 상기 가압축(2)에 가압력을 주는 가압블록(3)과, 상기 가압축(2)에 가해지는 압력을 센싱하는 압력센서(4)와, 상기 가압블록(3)을 이동시켜주는 볼스크류(5)와, 상기 볼스크류(5)를 회동시키는 서보모터(6)와, 상기 서보모터(6)의 이동량을 감지하는 엔코더(7)와, 상기 압력센서(4)에서 센싱된 값에 따라 서보모터(6)를 가동시켜 가압력을 조정하는 제어부를 포함하여 구성되어 있는 것이 특징인 자동압력 조정식 소재 가압장치Pressing roller 1 for pressurizing the raw material, pressing shaft 2 to which the pressing roller 1 is coupled, LM guide guides the movement of the pressing shaft 2 and is fixed to the body 10. (8), a pressure block (3) for applying a pressing force to the pressure shaft (2), a pressure sensor (4) for sensing the pressure applied to the pressure shaft (2), and the pressure block (3) is moved The ball screw 5 to be made, the servo motor 6 for rotating the ball screw 5, the encoder 7 for detecting the movement amount of the servo motor 6, and the pressure sensor 4 sensed by Automatic pressure regulating material pressurizing device, characterized in that it comprises a control unit for adjusting the pressing force by operating the servomotor (6) according to the set value 제 1항에 있어서, The method of claim 1, 상기 가압블록(3) 내에는 고정샤프트(11) 및 압축스프링(12)을 형성하고, 상기 고정샤프트(11)의 일측은 압력센서(4)에 형성된 체결부재(13)에 의해 고정되고 타측은 자유로운 외팔보의 상태에서 가압블록(3)의 움직임을 고정샤프트(11)에 결합되어 있는 너트(14)에 의해 제한해주며, 상기 가압블록(3)은 고정샤프트(11)에 의해 관통되어 상기 고정샤프트(11)에 의해 가이드되면서 전후진 됨으로써 가압블록(3)이 압축스프링(12)을 가압하고 상기 압축스프링(12)이 고정샤프트(11)를 가압 함으로써 상기 고정샤프트(11)가 압력센서(4) 및 가압축(2)을 가압하는 것이 특징인 자동압력 조정식 소재 가압장치A fixed shaft 11 and a compression spring 12 are formed in the pressure block 3, and one side of the fixed shaft 11 is fixed by a fastening member 13 formed in the pressure sensor 4, and the other side thereof is fixed to the pressure block 3. In the state of the free cantilever, the movement of the pressing block 3 is limited by the nut 14 coupled to the fixed shaft 11, and the pressing block 3 is penetrated by the fixing shaft 11 to fix the movement. As the guide block is guided by the shaft 11 and then moved forward and backward, the pressure block 3 presses the compression spring 12 and the compression spring 12 presses the fixed shaft 11 so that the fixed shaft 11 is pressed by a pressure sensor ( 4) and the pressure regulating material pressurizing device characterized in that pressurizing the pressing shaft (2) 제 1항 또는 제 2항 중 어느 한 항에 있어서,The method according to claim 1 or 2, 상기 몸체(10)의 일측에는 리미트스위치(15)가 형성되어 가압블록(3)의 이동량을 제어하는 것이 특징인 자동압력 조정식 소재 가압장치A limit switch 15 is formed at one side of the body 10 to control the movement amount of the pressure block 3. 제 1항 또는 제 2항 중 어느 한 항에 있어서,The method according to claim 1 or 2, 상기 서보모터(6)의 축과 볼스크류(5) 사이에는 커플링(16)이 형성되어 조립성을 향상시킨 것이 특징인 자동압력 조정식 소재 가압장치Coupling (16) is formed between the shaft and the ball screw (5) of the servomotor (6) is characterized in that the self-adjustable pressure regulating material pressure device 소재 가압방법에 있어서,In the material pressurization method, 서보모터의 회전력을 볼스크류로 전달하여 가압력을 발생시키되, 상기 볼스크류에 의해 이동되는 가압블록을 형성하며, 상기 가압블록에 의해 가압되는 가압축과, 상기 가압축에 결합되며 소재를 가압하는 가압롤러를 형성하되, 상기 가압블록과 가압축 사이에는 압력센서를 형성하여 상기 압력센서에서 센싱되는 가압력을 실시간 측정하여 측정된 가압력의 센싱값을 제어부로 전송하고 상기 제어부에서는 초기입력값과 비교하여 가압력의 가감을 계산한 뒤 서보모터를 동작시켜 가압력을 가감하는 것이 자동압력 조정식 소재 가압방법The pressing force is generated by transmitting the rotational force of the servomotor to the ballscrew, and forms a pressing block that is moved by the ballscrew, and the pressing shaft pressed by the pressing block and the pressing shaft coupled to the pressing shaft to pressurize the material. A roller is formed, and a pressure sensor is formed between the pressure block and the pressure shaft to measure the pressing force sensed by the pressure sensor in real time, and transmit the sensing value of the measured pressing force to the controller. The controller compares the initial input value with the pressing force. The pressure of the automatic pressure regulating material is to adjust the pressure by operating the servomotor after calculating
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CN105935849A (en) * 2015-12-08 2016-09-14 天津新瑞微联科技有限公司 Pinch roller device
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CN111515594A (en) * 2020-05-30 2020-08-11 山西斯米咖科技有限公司 Two-stage guide rail pressure mechanism
CN113751903A (en) * 2021-09-27 2021-12-07 北京工业大学 Laser rolling welding-following device

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Cited By (8)

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KR101277848B1 (en) * 2011-10-28 2013-06-21 현대제철 주식회사 Resistance spot welder
KR101331835B1 (en) * 2012-02-10 2013-11-22 한국과학기술연구원 A device for generating limit torque with funtion of real-time yielding torque changing
US9016452B2 (en) 2012-02-10 2015-04-28 Korea Institute Of Science And Technology Device for generating limit torque with function of yielding torque change in real time
CN105935849A (en) * 2015-12-08 2016-09-14 天津新瑞微联科技有限公司 Pinch roller device
CN106141463A (en) * 2016-08-08 2016-11-23 江苏大学 A kind of multi-purpose laser transmission welding clamping device
CN106826010A (en) * 2016-12-29 2017-06-13 芜湖市易众电器有限公司 A kind of special piece welds control system
CN111515594A (en) * 2020-05-30 2020-08-11 山西斯米咖科技有限公司 Two-stage guide rail pressure mechanism
CN113751903A (en) * 2021-09-27 2021-12-07 北京工业大学 Laser rolling welding-following device

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