CN104785860B - Automatic lifting device for reel pipe weld joint scraper - Google Patents

Abstract

An automatic lifting device for a coiled pipe weld scraper, belonging to the field of coiling equipment, the automatic lifting device for the scraper includes a steel pipe circumferential weld detection device and a scraper lifting device, the scraper is set on the scraper lifting device, and the steel pipe circumferential weld detection device And the scraper lifting device is respectively connected with the controller. By using the invention, tool damage can be avoided, the precision of equipment can be protected, downtime can be reduced, tool cost can be reduced, and production efficiency can be improved.

Description

An automatic lifting device for the seam scraper of coiled pipe

technical field

The invention relates to a lifting device, in particular to an automatic lifting device for a coiled pipe weld seam scraper, which belongs to the field of coiled pipe equipment.

Background technique

Rolling up the plate to form a steel pipe is a commonly used steel pipe production method. The rolled steel pipe is finally welded to form a steel pipe with a peripheral seal. In order to make the outer surface of the welded steel pipe smooth as before, one of the welds is parallel to the axis of the steel pipe. On the outer circumference of the steel pipe, this is a straight line weld. It is necessary to use a scraper on the production line to remove the protruding part welded on the surface of the steel pipe moving in the axial direction, so that the surface of the weld part is on the circumference of the steel pipe. However, in When eradicating the longitudinal weld of the steel pipe, sometimes the weld in the circumferential direction of the steel pipe is encountered. This kind of weld is mainly to maintain continuous production. The protruding height of the steel pipe is higher than the longitudinal weld of the steel pipe. Therefore, when removing the longitudinal weld, the steel pipe moves along the length direction, and the spatula is fixed at one position to remove the weld seam along the length of the steel pipe. However, during the removal process In the middle, once encountering the circumferential weld, it will cause a huge vibration of the blade, which will cause a gap in the blade of the blade or a breakage of the handle, which will not only damage the blade, but also affect the manufacturing accuracy of the equipment. How to avoid it? The occurrence of this situation is a key part of preventing damage to the scraper and protecting the precision of the equipment.

Contents of the invention

Aiming at the problem that the circumferential welding seam that occurs when the scraper removes the longitudinal weld seam will damage the scraper and damage the accuracy of the equipment, the invention provides an automatic lifting device for the weld seam scraper of coiled pipe, the purpose of which is to avoid damage to the scraper and protect the manufacturing accuracy of the equipment , Reduce tool costs, reduce equipment maintenance time, and improve economic benefits.

The technical scheme of the present invention is: an automatic lifting device for the weld seam scraper of coiled pipe, including a scraper, the automatic lifting device for the scraper includes a steel pipe circumferential weld seam detection device and a scraper lifting device, the scraper is set on the scraper lifting device, and the steel pipe circumferential direction The weld detection device and the scraper lifting device are respectively connected with the controller. The steel pipe circumferential weld detection device includes two contact blocks arranged on the circumference of the steel pipe. The upper parts of the two contact blocks are respectively connected with connecting rods, and the connecting rods are set There is a hinged shaft, and the other ends of the two connecting rods are respectively provided with contact rods. The two contact rods are respectively at the ends of the two connecting rods. Further, the scraper lifting device is provided with a lifting cylinder, which is connected to the controller through a solenoid valve, and further, one or two contact rods on both sides of the elastic contact switch are set as elastic telescopic contact rods, the The elastic telescopic contact rod is as follows: the contact rod is set in the hole opened at the end of the connecting rod, the spring pierced on the contact rod is positioned between the inner side of the connecting rod and one end of the contact rod, and the other end of the contact rod is pressed on the connecting rod by a nut. On the outside of the rod, further, the two contact rods on both sides of the elastic contact switch are set as elastic telescopic contact rods. The elastic telescopic contact rods are: the contact rods are set in the holes opened at the ends of the connecting rods, and The spring is positioned between the inner side of the connecting rod and one end of the stem, and the other end of the stem is pressed against the outer side of the connecting rod through a nut.

The positive effect of the present invention is that by setting relative contact blocks around the steel pipe, the contact blocks will rotate around the hinge axis when the circumferential weld passes by, and the two contact rods brought by the rotation of the contact blocks will come into close contact, which can During the moving process, the circumferential raised weld seam is detected. At this time, the other side of the connecting rod will use the elastic contact switch to contact conduction or close, and the signal will be fed back to the controller, and the controller will send the signal It is transmitted to the solenoid valve to make the cylinder drive the scraper to rise. When the welding seam is raised higher, the sum of the moving distance of the two contact rods when the two connecting rods rotate is greater than the maximum distance of the ends of the two contact rods. After the ends of the two contact rods are in contact, when the connecting rod moves to the side of the elastic contact switch, the contact rod will compress the spring and move to the outside of the connecting rod, that is, the relative displacement between the contact rod and the connecting rod will avoid the contact rod Force deformation damage. The present invention arranges two contact blocks on both sides of the steel pipe, which can effectively improve the accuracy of identification. The test shows that the recognition accuracy of the circumferential weld of the present invention is 100%. If one contact block is provided on one side, the steel pipe will Misjudgment of weld seams or missed judgment of weld seams will occur in the case of unexpected position deviation. The invention can avoid tool damage, protect equipment precision, reduce downtime and improve production efficiency.

Description of drawings

Fig. 1 Schematic diagram of the structure of the steel pipe circumferential weld detection device.

Figure 2 Schematic diagram of the connection between the tool and the lifting cylinder.

detailed description

In order to more fully explain the implementation of the present invention, implementation examples of the present invention are provided. These implementation examples are only illustrations of the device and do not limit the scope of the present invention.

The technical solution of the present invention will be further described below with reference to Fig. 1 and Fig. 2. In the figure, 1: steel pipe, 2: contact block, 3: connecting rod, 4: hinged shaft, 5: elastic contact switch, 6: scraper, 7: scraper fixed shaft, 8: lifting cylinder, 9: solenoid valve, 10: compressed air tube, 11: contact rod, 12: nut, 13: connecting rod hole, 14: spring, 15: end of contact rod.

The technical solution of the present invention is an automatic lifting device for a coiled pipe weld scraper. Fig. 1 is a schematic structural view of a steel pipe circumferential weld detection device. Fig. 2 is a schematic diagram of the connection between the cutter and the lifting cylinder. The scraper is fixedly connected to the processing machine On the scraper fixed shaft 7, the scraper automatic lifting device includes a steel pipe circumferential weld detection device and a scraper lifting device, and the steel pipe circumferential weld detection device and the scraper lifting device are connected to the controller respectively, and the steel pipe circumferential weld detection device It includes two contact blocks 2 arranged on the circumference of the steel pipe 1, and the center of the hinge shaft and the contact block is not on a vertical line, so that the two contact blocks connected to the hinge shaft will naturally contact and press on the surface of the steel pipe, and the two contact blocks 2. The upper part is respectively connected with connecting rods 3, and the connecting rods 3 are provided with hinge shafts 4. The other ends of the two connecting rods 3 are respectively provided with contact rods 11, which are respectively installed in the connecting rod holes 13 at the ends of the connecting rods. 2. The two contact rods are relatively arranged, and an elastic contact switch 5 is arranged in the middle of the two contact rods. Springs 14 are arranged on the contact rods on the less side or both sides between the contact rod end 15 on the elastic switch 5 side and the connecting rod 3, The other end of the contact rod is provided with a nut 12 for compression. An elastic contact switch 5 is arranged between the ends of the two contact rods, and the elastic contact switch 5 is connected with the controller.

The contact switch can also use a switch with a button on one side, and the button switch can also be arranged on any one end surface of the contact rod, and a push button switch formed on the end surface of the contact rod can detect the weld seam in the circumferential direction.

The scraper lifting device is provided with a lifting cylinder 8, which is connected to the controller through a solenoid valve 9, and a compressed air pipe 10 is connected between the lifter 8 and the solenoid valve 9, and the contact block in the circumferential weld detection device 2 Relative to the moving direction of the steel pipe, it is arranged in front of the lifting device of the scraper, that is to say, the contact block 2 first contacts the steel pipe 1 moving in the axial direction, and then the scraper contacts the moving steel pipe 1.

By setting two opposite contact blocks on the periphery of the steel pipe, the contact block will rotate around the hinge axis when the circumferential weld passes by, and the two contact rods brought by the rotation of the contact block will come into close contact, which can detect the circumference when the steel pipe is moving. At this time, the other side of the connecting rod will use the elastic contact switch to conduct or close the contact, and the signal will be fed back to the controller, and the controller will transmit the signal to the solenoid valve, so that the cylinder drives the scraper When the welding seam bulge is higher, the sum of the moving distances of the two contact rods when the two connecting rods rotate is greater than the maximum distance between the ends of the two contact rods. When the rod moves to the side of the elastic contact switch, the contact rod will compress the spring and displace to the outside of the connecting rod, that is, the relative displacement between the contact rod and the connecting rod will avoid damage to the contact rod due to force deformation. It can avoid tool damage, protect the precision of equipment, reduce downtime and improve production efficiency.

After describing the implementation of the present invention in detail, those familiar with the technology can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple amendments, equivalent changes and modifications all belong to the scope of the technical solution of the present invention, and the present invention is not limited to the implementation methods exemplified in the specification.

Claims (4)

1. a kind of pipe crimping weld seam automatic scraper lifting device, including scraper, it is characterised in that：The automatic scraper lifting device bag Steel pipe girth seam detection means and scraper lifting device are included, scraper is arranged on scraper lifting device, the detection of steel pipe girth seam Device and scraper lifting device are connected respectively with controller, and the steel pipe girth seam detection means includes being arranged on steel pipe circle Two contact blocks on week, two contact block tops are connected to connecting rod, and jointed shaft, the other end of two connecting rods are provided with connecting rod Feeler lever is respectively arranged with, two feeler levers are connected to two interlinking lever ends, and two feeler levers are oppositely arranged, and two feeler lever middle settings have bullet Property contact switch, resilient contact switch be connected with controller.

2. a kind of pipe crimping weld seam automatic scraper lifting device according to claim 1, it is characterised in that：Scraper lifting device In be provided with lift cylinder, lift cylinder is connected by magnetic valve with controller.

3. a kind of pipe crimping weld seam automatic scraper lifting device according to claim 1, it is characterised in that：Resilient contact is switched One or two feeler lever of both sides is set to elastic telescopic feeler lever, and described elastic telescopic feeler lever is：Feeler lever arranges interlinking lever end In the hole for opening up, the spring worn on feeler lever is positioned between connecting rod inner side and one end of feeler lever, and the other end of feeler lever passes through spiral shell Mother is pressed on connecting rod outside.

4. a kind of pipe crimping weld seam automatic scraper lifting device according to claim 3, it is characterised in that：Resilient contact is switched Two feeler levers of both sides are set to elastic telescopic feeler lever, and described elastic telescopic feeler lever is：Feeler lever arranges what interlinking lever end was opened up Kong Zhong, the spring worn on feeler lever is positioned between connecting rod inner side and one end of feeler lever, and the other end of feeler lever is compressed by nut On the outside of connecting rod.