WO2018145445A1 - Automobile luggage rack automatic stud spot welding device - Google Patents

Abstract

An automobile luggage rack automatic stud spot welding device, comprising a frame (1), wherein the frame (1) is provided with a workpiece fixing jig (2), a spot welding machine (5) which is located above the workpiece fixing jig (2), a vibration disc (14), a conveying rail (15) which is fixed on the vibration disc (14), and a servo mechanical hand which conveys studs at an end of the conveying rail (15) onto an automobile luggage rack. Spot welding positions of the spot welding machine (5) are provided with two spot welding heads (6), the two spot welding heads (6) respectively face two stud welding positions on the automobile luggage rack, and the end of the conveying rail (15), the servo mechanical hand and the two spot welding heads (6) are arranged in a straight line. The studs are conveyed via the vibration disc (14), the servo mechanical hand grasps and precisely positions the studs for a welding operation, and the whole operation process is completed automatically, thereby preventing residual welding heat from hurting people, increasing safety, solving quality abnormalities caused by worker operational factors, ensuring welding accuracy and quality, and significantly decreasing worker labour intensity.

Description

 Automatic stud spot welding device for automobile luggage rack

Technical field

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.

Background technique

Since the luggage rack and the roof of the car are fixed by screw locking, the luggage rack needs to use special-shaped studs for ensuring the fixing, and the online tapping cost is high and the efficiency is low. Therefore, we use special shaped stud semi-finished products to be welded with the luggage rack. form. 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, and then 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. 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. 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.

Summary of the invention

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.

The solution to solve the technical problem of the present invention is: 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.

As a further improvement of the above technical solution, 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.

As a further improvement of the above technical solution, 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.

As a further improvement of the above technical solution, 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.

As a further improvement of the above technical solution, the two spot welding heads are mounted on the output end of the spot welding machine through the same mount.

As a further improvement of the above technical solution, 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.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is apparent that the described drawings are only a part of the embodiments of the present invention, and not all of the embodiments, and those skilled in the art can obtain other designs and drawings according to the drawings without any creative work.

Figure 1 is a schematic view of the structure of the present invention.

detailed description

The concept, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings. It is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments, based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The scope of protection of the present invention. In addition, all the coupling/joining relationships mentioned in the text are not directly connected to the components, but rather may constitute a better coupling structure by adding or reducing the coupling accessories according to the specific implementation.

Referring to Fig. 1, 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 disk 14, the conveying rail 15 fixed on the vibrating plate 14, and the servo robot for feeding the stud at the end of the conveying rail 15 to the luggage rack of the automobile, the spot welding portion of the spot welding machine 5 is arranged with two spot welding heads 6 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.

Further, as a preferred embodiment, 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.

Further, as a preferred embodiment, 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.

Further, as a preferred embodiment, 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.

Further as a preferred embodiment, 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.

Further, as a preferred embodiment, 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. After the spot welding is completed, 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.

The above is a detailed description of the preferred embodiments of the present invention, but the invention is not limited to the embodiments, and various modifications and substitutions can be made by those skilled in the art without departing from the spirit of the invention. Such equivalent modifications or alternatives are intended to be included within the scope of the claims.

Claims (6)

An automatic stud spot welding device for a vehicle luggage rack, comprising: a frame on which a workpiece fixing jig, a spot welding machine located above the workpiece fixing jig, a vibration plate, and a vibration are fixed a conveying rail on the disc and a servo robot for feeding the stud at the end of the conveying rail to the luggage rack of the automobile, wherein the spot welding station of the spot welding machine is arranged with two spot welding heads, and the two spot welding heads are respectively opposed Two stud welding positions on the car rack, the end of the transport track, the servo manipulator and the two spot welding heads are distributed in a straight line. The automatic stud spot welding device for a luggage rack according to claim 1, wherein the servo robot comprises a first slider, a first rail parallel to the conveying rail, and drives the first slider along the first rail. a sliding first cylinder, a second cylinder mounted on the first slider, and a loading cylinder mounted on the extended end of the second cylinder, the protruding end of the second cylinder being vertically downward, the loading cylinder Two clamping blocks are mounted on the working end, and a stud clamping space is formed between the two clamping blocks, and the end of the conveying rail is blocked by the stopper to form a stud capable of accommodating a stud. space. The automatic stud spot welding apparatus for a passenger luggage rack according to claim 2, wherein 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. The automatic stud spot welding device for a luggage rack according to any one of claims 1 to 3, characterized in that: at both ends of the workpiece fixing jig, a workpiece locking device is arranged, and the front side of the workpiece fixing fixture Disposed with a discharge plate, two ejector pins are arranged on the discharge plate, and the two ejector pins extend horizontally into the interior of the workpiece fixing fixture, and the jacking cylinder is installed in the rack, and the unloading The material plate is mounted on the extended end of the jacking cylinder. The automatic stud spot welding apparatus for a passenger luggage rack according to any one of claims 1 to 3, characterized in that the two spot welding heads are mounted on the output end of the spot welding machine through the same mounting seat. The automatic stud spot welding device for a passenger luggage rack according to any one of claims 1 to 3, characterized in that: the PLC controller, the emergency stop switch, the start switch and the vibration disk switch are mounted on the frame.