CN201143610Y - Circular seam welding machine - Google Patents

Abstract

The utility model relates to a circular seam welding machine, which includes a frame and a clamping mechanism and a rotating mechanism relatively arranged on the frame; the clamping mechanism cooperates with the rotating mechanism to clamp and drive the workpiece rotate. After adopting the above structure, the clamping mechanism and the rotating mechanism can respectively clamp the workpiece from both ends of the workpiece, and reliably perform positioning welding on the workpiece with protruding parts at both ends of the body.

Description

Circular seam welding machine

technical field

The utility model relates to a welding device, in particular to a circular seam welding machine.

Background technique

In the machinery industry, there are many places where it is necessary to weld the closed annular seam formed at the junction of two parts, so as to achieve the effect of being integrated or sealed. If the circular seam is circular, it is easier to realize automatic welding of this type of circular seam, and there are many such equipment, most of which realize automatic welding by rotating the workpiece at a constant speed around the axis and fixing the welding torch. However, if the circular seam is non-circular, such as an ellipse or an approximate ellipse or other irregular circular seams, it will be more difficult to realize automatic welding. Chinese utility model patent 200520081746.6 specification discloses a special-shaped tank circular seam automatic welding machine, which includes a welding machine, a special-shaped tank, a rotating device is installed on the tank, and a driving track is arranged on the side of the tank. There is a bracket on the track, and a welding platform is installed on the bracket. It is characterized in that: a horizontal guide rail is fixed on the welding platform, a horizontal slide plate is installed on the guide rail, and a longitudinal guide rail is fixedly installed on the other side of the slide plate. A longitudinal slide plate is installed on the guide rail, a welding wire reel and a welding wire conveying device are fixedly connected to the longitudinal slide plate, a trolley is fixedly connected to the lower part of the longitudinal slide plate, a welding torch is fixed on the trolley, and a drive motor is arranged inside the trolley. A distance sensor is also installed on the trolley, and the sensor is connected with the controller through a cable, and the controller is also connected with the drive motor in the trolley and the tank rotating device through the cable. This kind of welding machine positions and rotates the tank body of the opposite sex to be welded through the rotating device. The controller controls the tank rotating device and the drive motor to coordinate the action, so that the welding torch fixed on the trolley can weld the weld seam on the tank body of the opposite sex to be welded. The tank body rotation device is platform-shaped, which is only suitable for positioning the workpiece with flat ends. For the workpiece 6 shown in Figure 1, there are protruding parts 61 at both ends of the workpiece body, so positioning cannot be realized. Such workpieces cannot be welded smoothly.

Utility model content

The technical problem to be solved by the utility model is to provide a circular seam welding machine suitable for positioning welding of workpieces with protruding parts at both ends of the body.

In order to solve the above technical problems, the circular seam welding machine of the present invention includes a frame, wherein it also includes a clamping mechanism and a rotating mechanism that are relatively arranged on the frame; the clamping mechanism cooperates with the rotating mechanism to clamp Tighten the workpiece and drive the workpiece to rotate.

As a further improvement of the above technical solution, wherein, the clamping mechanism includes a clamping pressure cylinder fixed on the frame, and the piston rod of the clamping pressure cylinder is provided with a rotatable first clamping workpiece. One clamping block.

As a further improvement of the above technical solution, wherein a positioning hole is opened on the first clamping block, and a positioning pin that can extend into the positioning hole is provided on the piston rod of the clamping pressure cylinder.

As a further improvement of the above technical solution, wherein, the piston rod of the clamping pressure cylinder is provided with a positioning pressure cylinder, and the positioning pin is fixed on the piston rod of the positioning pressure cylinder.

As a further improvement of the above technical solution, wherein, the piston rod of the clamping pressure cylinder is provided with a first clamping rod, and the first clamping block is provided on the first clamping rod.

As a further improvement of the above technical solution, a first guide block is fixed on the first clamping rod; a first guide rod that can guide the first guide block to slide is provided on the frame.

As a further improvement of the above-mentioned technical solution, wherein the rotating mechanism includes a stepping motor fixed on the frame, the output shaft of the stepping motor is provided with a second clamping block that can be inserted into the workpiece, the The second clamping block and the first clamping block can respectively clamp the workpiece from both ends of the workpiece.

As a further improvement of the above technical solution, wherein, the output shaft of the stepping motor is provided with a second clamping rod, and the second clamping block is arranged on the second clamping rod.

As a further improvement of the above technical solution, wherein, the second clamping block is provided with a through discharge hole, and the frame is provided with a material that can extend into the discharge hole to push the workpiece away from the second clamping block. block discharge rod.

As a further improvement of the above technical solution, wherein, the frame is provided with a discharge pressure cylinder, and the discharge rod is fixed on the piston rod of the discharge pressure cylinder.

As a further improvement of the above technical solution, it also includes a liftable feeder mechanism arranged on the frame for supporting the workpiece during loading and unloading, the feeder mechanism is located between the clamping mechanism and between the rotating mechanisms.

As a further improvement of the above technical solution, wherein, the piece feeding mechanism includes a lifting pressure cylinder fixed on the frame, and a support frame capable of supporting the workpiece is fixed on the piston rod of the lifting pressure cylinder.

As a further improvement of the above technical solution, wherein, the support frame is fixed with a second guide rod that can guide the support frame to go up and down.

Compared with the prior art, the utility model, because the rotating device includes a clamping mechanism and a rotating mechanism oppositely arranged; the clamping mechanism cooperates with the rotating mechanism to clamp the workpiece and drive the workpiece to rotate, therefore, the clamping mechanism and the rotating mechanism The rotating mechanism can respectively clamp the workpiece from both ends of the workpiece, reliably realize the positioning of the workpiece whose height dimension is larger than the width dimension, and is suitable for positioning the workpiece with protruding parts at both ends of the body.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.

Fig. 1 is a front view structural schematic diagram of a workpiece.

Fig. 2 is a three-dimensional structural schematic diagram of the utility model circular seam welding machine.

Fig. 3 is a front structural schematic diagram of the utility model circular seam welding machine.

Fig. 4 is a top view structure schematic diagram of the utility model circular seam welding machine.

Fig. 5 is a front structural diagram of the clamping mechanism of the circular seam welding machine of the present invention.

Fig. 6 is a top structural schematic diagram of the clamping mechanism of the circular seam welding machine of the present invention.

Fig. 7 is a schematic diagram of the front structure of the rotation mechanism of the circular seam welding machine of the present invention.

Fig. 8 is a top structural schematic diagram of the rotating mechanism of the circular seam welding machine of the present invention.

Fig. 9 is a front structural schematic diagram of the lifting mechanism of the circular seam welding machine of the present invention.

Fig. 10 is a top view structural diagram of the lifting mechanism of the circular seam welding machine of the present invention.

Fig. 11 is a schematic side view of the wire feeding mechanism of the circular seam welding machine of the present invention.

Fig. 12 is a front structural schematic diagram of the wire feeding mechanism of the circular seam welding machine of the present invention.

Detailed ways

Please refer to Fig. 2 to Fig. 4 and Fig. 11 and Fig. 12, the circular seam welding machine of the present utility model includes a frame 1, a clamping mechanism 3, a rotating mechanism 4, a piece feeding mechanism 2, and a wire feeding mechanism 5.

The frame 1 is used to support the clamping mechanism 3, the rotating mechanism 4, the feeding mechanism 2 and the wire feeding mechanism 5; the clamping mechanism 3 is used to cooperate with the rotating mechanism 4 to clamp the workpiece, and the rotating mechanism 4 is used to drive the workpiece Rotation; the feeding mechanism 2 is used to support the workpiece when loading and unloading; the wire feeding mechanism 5 is used to clamp the welding torch and the transmission of the welding wire.

Please refer to Fig. 2, Fig. 5 and Fig. 6, the clamping mechanism 3 mainly includes a clamping pressure cylinder fixing frame 39, a clamping pressure cylinder 31, a first clamping rod 33, a positioning pressure cylinder 35, and a first clamping block 36; The clamping pressure cylinder fixing frame 39 is fixed on the frame 1, and the clamping pressure cylinder 31 is fixed on the clamping pressure cylinder fixing frame 39; the clamping pressure cylinder 31 is connected with the first clamping rod through the first coupling 32 33, the free end of the first clamping rod 33 is provided with a rotatable first clamping block 36, the shape of the clamping surface of the first clamping block 36 and the shape of the corresponding part of the clamped workpiece 6 Correspondingly, the corresponding part of the workpiece 6 can be snapped into the first clamping block 36 to achieve reliable clamping. In order to enable the first clamping rod 33 to be driven by the clamping pressure cylinder 31 to expand and contract smoothly, a first guide block 38 is fixed on the first clamping rod 33; the frame 1 is provided with a guide block 38 Sliding first guide rod 37. On the first clamping rod 33, a positioning pressure cylinder fixing frame 34 is fixed, and the positioning pressure cylinder 35 is fixed on the positioning pressure cylinder fixing frame 34; a positioning pin 341 is fixed on the piston rod of the positioning pressure cylinder 35, the The positioning pin 341 can be inserted into the positioning hole 360 provided on the first clamping block 36 under the drive of the positioning pressure cylinder 35 , so that the first clamping block 36 cannot rotate relative to the first clamping rod 33 . In order to accurately control the expansion and contraction of the piston rods of the clamping pressure cylinder 31 and the positioning pressure cylinder 35, the clamping pressure cylinder 31 and the positioning pressure cylinder 35 are respectively provided with sensors that can sense whether the piston rods are stretched out and retracted in place. device, the clamping pressure cylinder 31 and the positioning pressure cylinder 35 respectively act according to the signals of the corresponding sensors.

Referring to Fig. 2, Fig. 7 and Fig. 8, the rotating mechanism 4 is arranged opposite to the clamping mechanism 3, and the two constitute a rotating device that can clamp the workpiece and drive the workpiece to rotate; the rotating mechanism 4 includes a stepping motor 41, Motor fixing frame 49, second clamping rod 43, second clamping block 46, bearing seat 48, discharge pressure cylinder 45, discharging rod 451; motor fixing frame 49 is fixed on the frame 1, and stepper motor 41 is fixed On the motor fixing frame 49, the output shaft of the stepping motor 41 is connected with a second clamping rod 43 through a second coupling 42, and a second clamping block is fixed on the free end of the second clamping rod 43 46. The shape of the clamping surface of the second clamping block 46 corresponds to the shape of the corresponding part of the workpiece 6 to be clamped, so that the corresponding part of the workpiece 6 can be embedded in the second clamping block 46, The second clamping block 46 and the first clamping block 36 can respectively clamp the workpiece 6 from both ends of the workpiece 6 to achieve reliable clamping. In order to ensure that the second clamping rod 43 rotates smoothly under the drive of the stepper motor 41, a bearing seat 48 is fixed on the frame 1, and the second clamping rod 43 is connected on the bearing seat 48 through a bearing; A discharge pressure cylinder 45 is fixed on the seat 48, and a discharge rod 451 is fixed on the piston rod of the discharge pressure cylinder 45; a through discharge hole 460 is provided on the second clamping block 46, and after the welding is completed, Driven by the discharge pressure cylinder 45 , the discharge rod 451 can extend into the discharge hole 460 to push the workpiece 6 away from the second clamping block 46 . In order to accurately control the expansion and contraction of the piston rod of the discharge pressure cylinder 45, an inductor that can sense whether the piston rod is stretched out and retracted in place is set on the discharge pressure cylinder 45. signal action.

Please refer to Fig. 2, Fig. 9 and Fig. 10, the delivery mechanism 2 is arranged on the position between the clamping mechanism 3 and the rotation mechanism 4 of the frame 1; the delivery mechanism mainly includes a support frame 22, a lifting pressure cylinder 21 , the second guide rod 23; the lifting pressure cylinder 21 is fixed on the frame 1, and the piston rod of the lifting pressure cylinder 21 is fixed with a support frame 22, and the support frame 22 is provided with a support plate 25 supporting the workpiece 6, the The shape of the support plate 25 is determined according to the shape of the workpiece 6 it supports, so as to ensure that the workpiece 6 is supported smoothly. A second guide rod 23 is fixed on the side opposite to the support plate on the support frame 22, and the second guide rod 23 can guide the support frame 22 to lift under the drive of the lifting pressure cylinder 21. On the base 1, there is a A linear bearing 24 that can guide the sliding of the second guide rod 23 . In order to accurately control the expansion and contraction of the piston rod of the lifting pressure cylinder 21, an inductor that can sense whether the piston rod is stretched out and retracted in place is provided on the lifting pressure cylinder 21, and the lifting pressure cylinder 2 acts according to the signal of the corresponding sensor.

Each of the above-mentioned pressure cylinders can be a hydraulic cylinder or an air cylinder.

Claims (13)

1. a Welding machine of circumferential weld comprises frame, it is characterized in that: it also comprises clamp mechanism and the rotating mechanism that is oppositely arranged on the described frame; This clamp mechanism cooperates with this rotating mechanism can clamp workpiece and drive workpiece rotates.

2. Welding machine of circumferential weld according to claim 1 is characterized in that: described clamp mechanism comprises the clamping pressure cylinder that is fixed on the described frame, but the piston rod of this clamping pressure cylinder is provided with first clamp of rotatable inlay card workpiece.

3. Welding machine of circumferential weld according to claim 2 is characterized in that: offer locating hole on described first clamp, the piston rod of described clamping pressure cylinder is provided with the alignment pin that can stretch into this locating hole.

4. Welding machine of circumferential weld according to claim 3 is characterized in that: the piston rod of described clamping pressure cylinder is provided with the positioning pressure cylinder, and described alignment pin is fixed on the piston rod of this positioning pressure cylinder.

5. Welding machine of circumferential weld according to claim 2 is characterized in that: the piston rod of described clamping pressure cylinder is provided with first clamping bar, and described first clamp is arranged on this first clamping bar.

6. Welding machine of circumferential weld according to claim 5 is characterized in that: be fixed with first guide pad on described first clamping bar; Described frame is provided with first guide post that bootable this first guide pad slides.

7. according to each described Welding machine of circumferential weld in the claim 2 to 6, it is characterized in that: described rotating mechanism comprises the stepper motor that is fixed on the described frame, but the output shaft of this stepper motor is provided with second clamp of inlay card workpiece, and this second clamp and described first clamp can be respectively clamp workpiece from the two ends of workpiece.

8. Welding machine of circumferential weld according to claim 7 is characterized in that: the output shaft of described stepper motor is provided with second clamping bar, and described second clamp is arranged on this second clamping bar.

9. Welding machine of circumferential weld according to claim 8 is characterized in that: offer the dumping pit that runs through on described second clamp, described frame is provided with and can stretches into the discharge arm that this dumping pit pushes away workpiece this second clamp.

10. Welding machine of circumferential weld according to claim 9 is characterized in that: described frame is provided with the discharging pressure cylinder, and described discharge arm is fixed on the piston rod of this discharging pressure cylinder.

11. Welding machine of circumferential weld according to claim 1 is characterized in that: its also comprise be arranged on that liftable on the described frame be used for supporting workpiece when loading and unloading material send part mechanism, this send part mechanism between described clamp mechanism and rotating mechanism.

12. Welding machine of circumferential weld according to claim 11 is characterized in that: the described lifting pressure cylinder that send part mechanism to comprise to be fixed on the described frame is fixed with the bracing frame that can support workpiece on the piston rod of this lifting pressure cylinder.

13. Welding machine of circumferential weld according to claim 12 is characterized in that: second guide post that is fixed with bootable support frame as described above lifting on the support frame as described above.

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