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WO2018145445A1 - 一种汽车行李架的自动螺柱点焊装置 - Google Patents

一种汽车行李架的自动螺柱点焊装置 Download PDF

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Publication number
WO2018145445A1
WO2018145445A1 PCT/CN2017/098992 CN2017098992W WO2018145445A1 WO 2018145445 A1 WO2018145445 A1 WO 2018145445A1 CN 2017098992 W CN2017098992 W CN 2017098992W WO 2018145445 A1 WO2018145445 A1 WO 2018145445A1
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WIPO (PCT)
Prior art keywords
spot welding
stud
luggage rack
cylinder
conveying rail
Prior art date
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Ceased
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PCT/CN2017/098992
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English (en)
French (fr)
Inventor
于文硕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Minhui Automobile Parts Co Ltd
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Guangzhou Minhui Automobile Parts Co Ltd
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Publication date
Application filed by Guangzhou Minhui Automobile Parts Co Ltd filed Critical Guangzhou Minhui Automobile Parts Co Ltd
Publication of WO2018145445A1 publication Critical patent/WO2018145445A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • 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 for a procedure covered by only one of the other main groups of this subclass

Definitions

  • the invention relates to a welding device in the field of automobile spare parts production research, in particular to an automatic stud spot welding device for a car luggage rack.
  • the existing operation mode is that an operator fixes the luggage rack on the profiling fixture, opens the clamping device to clamp the luggage rack fixing bracket, and then places a stud on the insulating positioning pin to start the welding machine point.
  • welding welding completes the loosening of the clamping device
  • the picking part places the welded semi-finished product on the transfer frame
  • another operator fixes the welded semi-finished product on the profiling fixture
  • opens the clamping device to clamp the welded semi-finished product
  • clamps the other
  • the studs are placed on the insulating locating pins, the spot welding of the welding machine is started, and the clamping device is loosened after the welding is completed, and the operation is completed. Therefore, it is now necessary to have one stud welding process with two welding machines, two sets of welding jigs, two people to carry out the work, the process is repeated, the tooling equipment is invested heavily, and the production safety and production efficiency are low.
  • the hand stud When the operator performs the welding work, the hand stud should be placed on the insulating locating pin. If the locating pin is worn or misaligned, the stud welding will be directly misaligned, so that the hole of the luggage rack and the roof fixing screw cannot be loaded during loading. Standard, can not guarantee quality.
  • the workpiece When the operator transfers the semi-finished product to the next process, the workpiece has a small size, and the welding residual temperature has a safety hazard, which is easy to cause burns to the operator, and the operator needs to perform a large amount of repetitive work by holding the stud and the semi-finished product, and the labor intensity is large.
  • the object of the present invention is to provide an automatic stud spot welding device for a car luggage rack, which conveys a stud through a vibrating plate, and the servo robot grasps the stud to accurately position the welding operation, and the entire operation process is automatically completed.
  • an automatic stud spot welding device for an automobile luggage rack comprising a frame on which a workpiece fixing jig and a spot welding machine located above the workpiece fixing jig are arranged a vibrating plate, a conveying track fixed on the vibrating plate, and a servo manipulator for feeding the stud at the end of the conveying rail to the luggage rack of the automobile, wherein the spot welding portion of the spot welding machine is arranged with two spot welding heads, two The spot welding heads are respectively directed to the two stud welding positions on the luggage rack of the automobile, and the end of the conveying rail, the servo robot and the two spot welding heads are arranged in a straight line.
  • the servo robot includes a first slider, a first rail parallel to the conveying rail, a first cylinder that drives the first slider to slide along the first rail, and is mounted on the first slider.
  • a second cylinder and a loading cylinder mounted on the extended end of the second cylinder, the protruding end of the second cylinder is vertically downward, and two clamping blocks are mounted on the working end of the loading cylinder, two A stud clamping space is formed between the clamping blocks, and the end of the conveying rail is blocked by the stopper to form a stud standby space capable of accommodating a stud.
  • the inside of the conveying rail forms a hollow passage through which the stud passes, and the upper end of the stud standby space is open.
  • a workpiece locking device is disposed at two ends of the workpiece fixing jig, and a discharging plate is disposed on a front outer side of the workpiece fixing jig, and two ejector pins are disposed on the discharging plate.
  • Two of the rams extend horizontally into the interior of the workpiece fixture, and a jacking cylinder is mounted in the frame, and the stripper plate is mounted on the projecting end of the jacking cylinder.
  • the two spot welding heads are mounted on the output end of the spot welding machine through the same mount.
  • the rack is equipped with a PLC controller, an emergency stop switch, a start switch, and a vibrating plate switch.
  • the invention has the beneficial effects that the invention transmits the stud through the vibrating plate, and the servo manipulator grasps the stud to accurately position and perform the welding operation, and the whole operation process is automatically completed, thereby avoiding the welding residual temperature and injuring the person, improving the safety and the safety. Solve the quality abnormalities caused by the operator's operation, ensure the welding accuracy and quality, and at the same time greatly reduce the labor intensity of the operator.
  • the special stud welding equipment can simultaneously weld the two studs and combine the processes into one, which can be completed by only one operator. The operator only needs to put the parts, press the stud spot welding device start button, take the three-step operation to complete the work, greatly reduce the labor intensity of the operator, improve the work efficiency, and reduce one person and one spot welding. Equipment reduces labor costs and equipment input costs.
  • Figure 1 is a schematic view of the structure of the present invention.
  • an automatic stud spot welding device for a car roof rack includes a frame 1 on which a workpiece fixing jig 2, a spot welding machine 5 located above the workpiece fixing jig 2, and vibration are disposed.
  • the two spot welding heads 6 respectively face two stud welding positions on the luggage rack of the automobile, and the end of the conveying rail 15, the servo robot and the two spot welding heads 6 are distributed in a straight line.
  • the servo robot includes a first slider 10, a first rail 9 parallel to the transport rail 15, a first cylinder 8 that drives the first slider 10 to slide along the first rail 9, and is mounted on the first a second cylinder 11 on a slider 10 and a loading cylinder 12 mounted on an extended end of the second cylinder 11, the projecting end of the second cylinder 11 being vertically downward, on the working end of the loading cylinder 12
  • Two clamping blocks 13 are mounted, and a stud clamping space is formed between the two clamping blocks 13.
  • the end of the conveying rail 15 is blocked by the blocking block 16 to form a stud capable of accommodating a stud. Standby space.
  • the inside of the conveying rail 15 forms a hollow passage through which the studs are received, and the hollow passage communicates with the stud standby space, and the upper end of the stud standby space is open for the robot to stand by from the stud. The stud is removed from the open end of the space.
  • the workpiece fixing fixture 2 is provided with workpiece locking devices 3 at both ends thereof, and the front outer side of the workpiece fixing jig 2 is provided with a discharging plate 4, and the discharging plate 4 is arranged with two a top ram 17, two of the ejector rods 17 extend horizontally into the interior of the workpiece fixing jig 2, in which the jacking cylinder is mounted, and the unloading plate 4 is mounted on the jacking of the jacking cylinder end.
  • the two spot weld heads 6 are mounted on the output of the spot welder 5 by the same mount. At this time, the two spot welding heads 6 realize simultaneous welding to improve welding efficiency.
  • the rack 1 is equipped with a PLC controller 7, an emergency stop switch, a start switch, and a vibrating plate switch.
  • the production operator first confirms the setting procedure of the PLC controller 7. After confirming the completion, the stud is placed on the vibrating plate 14, and the vibrating plate switch is pressed to adjust the stud under the vibration of the vibrating plate 14 and maintain the spot to be spotted. The studs are moved to the end of the conveying rail 15 in a spot welding state, and the studs are closely arranged, and one of the studs enters the stud standby space. After confirming, the operator places the spot welding semi-finished product on the workpiece fixing jig 2, presses the start switch, the workpiece locking device 3 starts to be in the clamped state to fix the semi-finished product, the servo manipulator starts, and the loading cylinder 12 moves to the conveying.
  • a stud is clamped at the end of the track 15, the second cylinder 11 drives the loading cylinder 12 to rise, the first cylinder 8 translates the loading cylinder 12 to the position of the stud insulating positioning pin, the stud is lowered, the servo robot returns to the origin, and the servo robot repeats
  • the work of gripping the stud is placed in another position of the car luggage rack, and the spot welder 5 drives the two spot welding heads 6 to move to the spot to be spotted, lowers the studs and semi-finished products, and sets the welding parameters according to the PLC controller 7
  • the spot welding operation is performed during the energization time.
  • the spot welding machine 5 drives the two spot welding heads 6 to return to the origin, and the workpiece locking device 3 is pressed down, and the spot welded product is jacked up by the jack 17 and then The operator takes the parts and the automatic spot welding process is completed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Assembly (AREA)
  • Resistance Welding (AREA)

Abstract

一种汽车行李架的自动螺柱点焊装置，包括机架（1），机架（1）上布置有工件固定冶具（2）、位于工件固定冶具（2）上方的点焊机（5）、振动盘（14）、固定在振动盘（14）上的输送轨道（15）以及将输送轨道（15）末端的螺柱送至汽车行李架上的伺服机械手，点焊机（5）的点焊处布置有两个点焊头（6），两个点焊头（6）分别对着汽车行李架上的两个螺柱焊接位置，输送轨道（15）的末端、伺服机械手和两个点焊头（6）成直线分布。通过振动盘（14）输送螺柱，伺服机械手抓取螺柱精准定位进行焊接操作，整个作业过程自动完成，既避免了焊接余温伤人，提升了安全性，又能解决因作业员操作原因引起的品质异常，保证焊接准确性和品质，同时还能大大降低作业员劳动强度。

Description

一种汽车行李架的自动螺柱点焊装置
技术领域
本发明涉及汽车零配件生产研究领域中的一种焊接设备，特别是一种汽车行李架的自动螺柱点焊装置。
背景技术
由于汽车行李架与车顶通过螺丝锁紧方式进行固定，所以行李架为保证固定需要使用异形螺柱，而在线攻牙成本高，效率低，故我们生产采用特制异形螺柱半成品与行李架焊接形式。现有作业方式为一名作业员将行李架固定架在仿形治具上，开启夹紧装置将行李架固定架夹紧，然后将一枚螺柱放置在绝缘定位销上，启动焊机点焊，焊接完成松开夹紧装置，取件将焊接半成品放置在中转架，另一名作业员将焊接半成品固定在仿形治具上，开启夹紧装置将焊接半成品夹紧，然后将另一枚螺柱放置在绝缘定位销上，启动焊机点焊，焊接完成松开夹紧装置，作业完毕。所以现在需要1个螺柱焊接工序专配2台焊机、2组焊接治具、2个人进行作业，工序重复，工装设备投入大，生产安全性和生产效率低。作业员进行焊接作业时，需手持螺柱放置在绝缘定位销，若定位销有磨损或偏位，会直接造成螺柱焊接偏位，使装车时行李架与车顶固定螺丝孔位无法对准，无法保证品质。作业员在转移焊接半成品到下工序时，由于工件尺寸较小，焊接余温有安全隐患，易造成作业员烫伤，且作业员手持螺柱、周转半成品需进行大量重复工作，劳动强度大。
发明内容
本发明的目的，在于提供一种汽车行李架的自动螺柱点焊装置，其通过振动盘输送螺柱，伺服机械手抓取螺柱精准定位进行焊接操作，整个作业过程自动完成。
本发明解决其技术问题的解决方案是：一种汽车行李架的自动螺柱点焊装置，包括机架，所述机架上布置有工件固定治具、位于工件固定治具上方的点焊机、振动盘、固定在振动盘上的输送轨道以及将输送轨道末端的螺柱送至汽车行李架上的伺服机械手，所述点焊机的点焊处布置有两个点焊头，两个所述点焊头分别对着汽车行李架上两个螺柱焊接位置，所述输送轨道的末端、伺服机械手和两个点焊头成直线分布。
作为上述技术方案的进一步改进，所述伺服机械手包括第一滑块、与输送轨道平行的第一轨道、驱使第一滑块沿第一轨道滑行的第一气缸、安装在第一滑块上的第二气缸以及安装在第二气缸伸出端的上料气缸，所述第二气缸的伸出端竖直向下，所述上料气缸的工作端上安装有两个夹紧块，两个所述夹紧块之间形成螺柱夹紧空间，所述输送轨道的末端通过挡块封堵后形成能容纳一个螺柱放置的螺柱待命空间。
作为上述技术方案的进一步改进，所述输送轨道的内部形成一条容纳螺柱通过的中空通道，所述螺柱待命空间的上端敞口。
作为上述技术方案的进一步改进，所述工件固定治具的两端布置有工件锁紧装置，工件固定治具的前外侧布置有卸料板，所述卸料板上布置有两根顶杆，两根所述顶杆沿水平方向延伸进工件固定治具内部，所述机架内安装有顶起气缸，所述卸料板安装在顶起气缸的伸出端。
作为上述技术方案的进一步改进，两个所述点焊头通过同一个安装座安装在点焊机的输出端上。
作为上述技术方案的进一步改进，所述机架上安装有PLC控制器、急停开关、启动开关以及振动盘开关。
本发明的有益效果是：本发明通过振动盘输送螺柱，伺服机械手抓取螺柱精准定位进行焊接操作，整个作业过程自动完成，既避免了焊接余温伤人，提升了安全性，又能解决因作业员操作原因引起的品质异常，保证焊接准确性和品质，同时还能大大降低作业员劳动强度。采用专用点焊设备可同时对两个螺柱进行点焊，将工序合并成一个，仅由一名作业员即可完成。作业员作业仅需放件、按下螺柱点焊装置启动按钮、取件三步操作即可完成作业，极大减少的作业员劳动强度，提升了工作效率，而且减少一人和一台点焊设备，降低了人力成本和设备投入成本。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单说明。显然，所描述的附图只是本发明的一部分实施例，而不是全部实施例，本领域的技术人员在不付出创造性劳动的前提下，还可以根据这些附图获得其他设计方案和附图。
图1是本发明的结构示意图。
具体实施方式
以下将结合实施例和附图对本发明的构思、具体结构及产生的技术效果进行清楚、完整地描述，以充分地理解本发明的目的、特征和效果。显然，所描述的实施例只是本发明的一部分实施例，而不是全部实施例，基于本发明的实施例，本领域的技术人员在不付出创造性劳动的前提下所获得的其他实施例，均属于本发明保护的范围。另外，文中所提到的所有联接/连接关系，并非单指构件直接相接，而是指可根据具体实施情况，通过添加或减少联接辅件，来组成更优的联接结构。
参照图1，一种汽车行李架的自动螺柱点焊装置，包括机架1，所述机架1上布置有工件固定治具2、位于工件固定治具2上方的点焊机5、振动盘14、固定在振动盘14上的输送轨道15以及将输送轨道15末端的螺柱送至汽车行李架上的伺服机械手，所述点焊机5的点焊处布置有两个点焊头6，两个所述点焊头6分别对着汽车行李架上两个螺柱焊接位置，所述输送轨道15的末端、伺服机械手和两个点焊头6成直线分布。
进一步作为优选的实施方式，所述伺服机械手包括第一滑块10、与输送轨道15平行的第一轨道9、驱使第一滑块10沿第一轨道9滑行的第一气缸8、安装在第一滑块10上的第二气缸11以及安装在第二气缸11伸出端的上料气缸12，所述第二气缸11的伸出端竖直向下，所述上料气缸12的工作端上安装有两个夹紧块13，两个所述夹紧块13之间形成螺柱夹紧空间，所述输送轨道15的末端通过挡块16封堵后形成能容纳一个螺柱放置的螺柱待命空间。
进一步作为优选的实施方式，所述输送轨道15的内部形成一条容纳螺柱通过的中空通道，中空通道与螺柱待命空间连通，所述螺柱待命空间的上端敞口，便于机械手从螺柱待命空间上端的敞口处将螺柱取出。
进一步作为优选的实施方式，所述工件固定治具2的两端布置有工件锁紧装置3，工件固定治具2的前外侧布置有卸料板4，所述卸料板4上布置有两根顶杆17，两根所述顶杆17沿水平方向延伸进工件固定治具2内部，所述机架1内安装有顶起气缸，所述卸料板4安装在顶起气缸的伸出端。
进一步作为优选的实施方式，两个所述点焊头6通过同一个安装座安装在点焊机5的输出端上。此时，两个点焊头6实现同时焊接，提高焊接效率。
进一步作为优选的实施方式，所述机架1上安装有PLC控制器7、急停开关、启动开关以及振动盘开关。
生产作业员首先确认好PLC控制器7设定程序，确认完毕后将螺柱放置振动盘14，按下振动盘开关，使螺柱在振动盘14振动作用下调整并保持待点焊状态，随即螺柱按待点焊状态运动至输送轨道15末端，螺柱紧密排列，其中一个螺柱进入螺柱待命空间。确认好后作业员将待点焊半成品放置在工件固定治具2上，按下启动开关，工件锁紧装置3启动处于夹紧状态将半成品固定好，伺服机械手启动，上料气缸12移动至输送轨道15末端夹取一个螺柱，第二气缸11驱使上料气缸12上升，第一气缸8将上料气缸12平移至螺柱绝缘定位销位置，放下螺柱，伺服机械手退回原点，伺服机械手重复夹取螺柱的工作放置汽车行李架的另外一个位置，点焊机5带动两个点焊头6移动至待点焊位置，下降压紧螺柱及半成品，按照PLC控制器7设置焊接参数及通电时间进行点焊操作，点焊完成后，点焊机5带动两个点焊头6退回原点，工件锁紧装置3压紧状态解除，点焊完成的产品会被顶杆17顶起，然后作业员取件，自动点焊工序完成。
以上是对本发明的较佳实施方式进行了具体说明，但本发明创造并不限于所述实施例，熟悉本领域的技术人员在不违背本发明精神的前提下还可作出种种的等同变型或替换，这些等同的变型或替换均包含在本申请权利要求所限定的范围内。

Claims (6)

  1. 一种汽车行李架的自动螺柱点焊装置，其特征在于：包括机架，所述机架上布置有工件固定治具、位于工件固定治具上方的点焊机、振动盘、固定在振动盘上的输送轨道以及将输送轨道末端的螺柱送至汽车行李架上的伺服机械手，所述点焊机的点焊处布置有两个点焊头，两个所述点焊头分别对着汽车行李架上两个螺柱焊接位置，所述输送轨道的末端、伺服机械手和两个点焊头成直线分布。
  2. 根据权利要求1所述的汽车行李架的自动螺柱点焊装置，其特征在于：所述伺服机械手包括第一滑块、与输送轨道平行的第一轨道、驱使第一滑块沿第一轨道滑行的第一气缸、安装在第一滑块上的第二气缸以及安装在第二气缸伸出端的上料气缸，所述第二气缸的伸出端竖直向下，所述上料气缸的工作端上安装有两个夹紧块，两个所述夹紧块之间形成螺柱夹紧空间，所述输送轨道的末端通过挡块封堵后形成能容纳一个螺柱放置的螺柱待命空间。
  3. 根据权利要求2所述的汽车行李架的自动螺柱点焊装置，其特征在于：所述输送轨道的内部形成一条容纳螺柱通过的中空通道，所述螺柱待命空间的上端敞口。
  4. 根据权利要求1~3任一项所述的汽车行李架的自动螺柱点焊装置，其特征在于：所述工件固定治具的两端布置有工件锁紧装置，工件固定治具的前外侧布置有卸料板，所述卸料板上布置有两根顶杆，两根所述顶杆沿水平方向延伸进工件固定治具内部，所述机架内安装有顶起气缸，所述卸料板安装在顶起气缸的伸出端。
  5. 根据权利要求1~3任一项所述的汽车行李架的自动螺柱点焊装置，其特征在于：两个所述点焊头通过同一个安装座安装在点焊机的输出端上。
  6. 根据权利要求1~3任一项所述的汽车行李架的自动螺柱点焊装置，其特征在于：所述机架上安装有PLC控制器、急停开关、启动开关以及振动盘开关。
PCT/CN2017/098992 2017-02-07 2017-08-25 一种汽车行李架的自动螺柱点焊装置 Ceased WO2018145445A1 (zh)

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