High frequency tube pre-seaming auxiliary device

Abstract

The high-frequency pipe pre-seam auxiliary device has two pressure rollers that are symmetrically distributed and are fixed in the upper roller seat and connected to the upper roller connecting rod. The upper roller connecting rod is embedded in the rod seat. There are many adjustment holes at the lower part of the upper roller connecting rod. The adjustment holes match the pin holes of the rod seat. The upper roller connecting rod and the rod seat are fixed by positioning pins. The bracket is mounted on the slide rail of the device base. Two symmetrical bottom rollers are also fixed on the bracket to support the bottom of the steel pipe. The bottom of the bottom roller is connected to the adjustment structure. The oil cylinder drives the adjustment structure, thereby driving the bottom roller to slide on the bottom roller slide seat to adapt to the support of steel pipes with different diameters. The present invention can not only control the rebound of the plate edge, but also meet the needs of φ219-φ630 steel pipe seam closure, and also meet the site installation requirements.

Description

Background Art

[0001] During the high-frequency welded pipe forming process, the tube blank is formed in sequence according to the hole design of each pass. When the tube head exits the fine forming rack and enters the extrusion rack, the plate edge opening will inevitably rebound and increase due to the loss of constraint. The extrusion roller hole is a precision positioning hole, and the rebound of the plate edge opening will inevitably cause it to be unable to enter the predetermined hole of the extrusion roller normally. In addition, the distance between the fine forming rack and the extrusion rack is very small, and the available space is also very limited. Technical Field

[0002] The invention belongs to the field of high-frequency welded pipes. Summary of the invention

[0003] The purpose of the present invention is to provide a stable and reliable high-frequency tube pre-seam auxiliary device, which can not only control the rebound of the plate edge, but also meet the seam requirements of φ219-φ630 steel pipes, and also meet the site installation requirements.

[0004] To achieve the above object, the technical solution of the present invention is:

[0005] A high-frequency tube pre-seam auxiliary device comprises: a pressure roller, an upper roller seat, an upper roller connecting rod, a height adjustment hole, a connecting rod seat, a positioning pin shaft, a bottom roller, a bottom roller seat, a bottom roller support, a bottom roller position adjustment transmission mechanism, a bracket, a support rod, a bracket position adjustment transmission mechanism, a cylinder transmission device, a rod seat slide groove, a bracket reinforcement rib, and a connecting pin shaft. The two pressure rollers are symmetrically distributed, respectively fixed in the upper roller seat and connected to the upper roller connecting rod, the upper roller connecting rod is embedded in the rod seat, and there are many adjustment holes in the lower part of the upper roller connecting rod, the adjustment holes match the rod seat pin holes, and the upper roller connecting rod and the rod seat are fixed by the positioning pins.

[0006] The rod seat is installed in the rod seat slide groove, and the bottom is connected to the cylinder head. The cylinder and the rod seat slide groove are respectively installed on the bracket. Through the action of the cylinder, the rod seat is driven to move in the rod seat slide groove to realize the loading constraint of the pressure roller on the plate edge.

[0007] Two symmetrical bottom rollers are also fixed on the bracket to support the bottom of the steel pipe. The bottom of the bottom roller is connected to the adjustment structure. The oil cylinder drives the adjustment structure, thereby driving the bottom roller to slide on the bottom roller slide to adapt to the support of steel pipes with different diameters.

[0008] The bracket is mounted on a slide rail of the device base, and an adjusting transmission mechanism is also fixed on the base. The adjusting transmission mechanism drives the bracket to slide, thereby driving the entire device to move.

[0009] Two support rods are installed on each side of the bracket. The support rods are retractable and support adjacent equipment during use to ensure the stability of the device.

[0010] The positive effects of the present invention are:

[0011] 1. When adjusting the shape and feeding the plate, this device is set between the fine forming frame and the extrusion frame. After the edge of the steel tube plate leaves the fine forming frame, the upper and lower four pressure rollers constrain the plate edge to control it, so that the tube head can directly pass through the belt and enter the extrusion roller, eliminating the rebound phenomenon of the plate head and edge, improving the efficiency of feeding the plate and ensuring the adjustment quality;

[0012] 2. The height of the two upper rollers and the distance between the two lower bottom rollers can be adjusted freely, which can meet the production of all specifications of steel pipes from φ219 to 610mm, which is convenient and fast.

[0013] 3. The structure is compact and practical, and the stability is maintained by the support rod fixing device, which can meet the actual installation requirements of the domestic high-frequency production line process layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 for Figure 1 Left view of . DETAILED DESCRIPTION

[0016] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings.

[0017] See also Figure 1-2 :Two rollers 1 are symmetrically distributed, both fixed in the roller seat 2 and connected to the upper roller connecting rod 3, the upper roller connecting rod 3 is embedded in the rod seat 5, there are many adjustment holes 4 at the lower part of the upper roller connecting rod 3, the adjustment holes 4 match the pin holes of the rod seat, and the upper roller connecting rod 3 and the rod seat 5 are fixed by the positioning pin 6. Different adjustment holes 4 correspond to different upper roller heights, and the roller height can be adjusted by adjusting the position of the adjustment holes 4 to meet the height requirements of different steel pipes of φ219-φ610.

[0018] The bottom of the rod seat 5 is connected to the head of the oil cylinder 14, and the oil cylinder is used to move the rod seat slide 15 to realize the loading constraint of the pressure roller on the plate edge. Two symmetrical bottom rollers 7 are also fixed on the bracket 11. The bottom of the bottom roller 7 is connected to the adjustment structure 10. The oil cylinder 14 drives the adjustment structure 10, thereby driving the bottom roller 7 to slide on the bottom roller slide seat, and adjusting the angle between the two bottom rollers 7 to adapt to the support of steel pipes with different diameters.

[0019] The bracket 11 is mounted on the slide rail of the device base, and an adjustment transmission mechanism 13 is also fixed on the base. The adjustment transmission mechanism 13 drives the bracket 11 to slide, thereby driving the entire device to move. Two support rods 12 are respectively installed on the two sides of the bracket 11. The support rods 12 are retractable and support adjacent equipment during use to ensure the stability of the device.

[0020] When in use, the device is first placed between the fine forming frame and the extrusion frame, and the bracket 11 is driven to slide by adjusting the transmission mechanism 13, so that the distance between the bracket 11 and the fine forming frame and the extrusion frame can meet the operation requirements of the device and be within the longest distance of the support rod 12. After determining the specific position of the bracket 11, the length of the support rod 12 is adjusted so that its end is against the side of the extrusion frame to prevent it from tipping over under the action of the forward force of the steel pipe, thereby achieving the purpose of fixing.

[0021] When the steel tube billet is out of the fine forming frame but not yet entering the frame, adjust the bottom roller position adjustment transmission mechanism 10 to open the bottom roller 7 to the maximum position, and adjust the upper roller 1 to the highest position. After the tube billet enters the frame, adjust the bottom roller position adjustment transmission mechanism 10 to make the bottom roller 7 just contact the bottom of the tube billet, and pull out the positioning pin 6 at the same time, so that the pressure roller 1 falls on the tube billet, and observe whether the height adjustment hole 4 is aligned with the hole on the connecting rod seat 5. If it is aligned, directly insert the positioning pin 6 to fix it. If it is misaligned, slowly lift the upper roller connecting rod 3 so that the nearest hole on the upper roller connecting rod 3 is aligned with the hole on the connecting rod seat 5, and then insert the positioning pin 6 to fix it.

[0022] After the positions of the pressure roller and the bottom roller are fixed, the control button of the cylinder transmission device 14 is started, the cylinder piston rod is extended, and the connecting rod seat 5 is driven to move in the rod seat slide groove 15 through the connecting pin shaft 17, and the downward pressure is applied to the edge of the tube blank through the pressure roller 1, and the position of the edge of the plate is firmly fixed so that it cannot rebound, and then the tube blank is moved forward inching, and the tube head of the tube blank can smoothly enter the predetermined hole shape of the extrusion roller.

Claims

1. High frequency tube pre-seam auxiliary device, including: The pressure roller, the upper roller seat, the upper roller connecting rod, the bottom roller, the bottom roller seat, the bottom roller support and the bracket are characterized in that: the two pressure rollers are symmetrically distributed, respectively fixed in the upper roller seat and connected to the upper roller connecting rod, the upper roller connecting rod is embedded in the rod seat, the lower part of the upper roller connecting rod has a plurality of adjustment holes, the adjustment holes match the pin holes of the rod seat, and the upper roller connecting rod and the rod seat are fixed by the locating pin; the bracket is installed on the slide rail of the device base, and two symmetrical bottom rollers are also fixed on the bracket for supporting the bottom of the steel pipe, the bottom of the bottom roller is connected to the adjustment structure, and the oil cylinder drives the adjustment structure, thereby driving the bottom roller to slide on the bottom roller slide seat to adapt to the support of steel pipes with different diameters; It also includes a rod seat, which is installed in a rod seat slide groove, and the bottom is connected to the cylinder head. The cylinder and the rod seat slide groove are respectively installed on the bracket. Through the action of the cylinder, the rod seat is driven to move in the rod seat slide groove to realize the loading constraint of the pressure roller on the plate edge. An adjusting transmission mechanism is also fixed on the base, and the adjusting transmission mechanism drives the bracket to slide, thereby driving the entire device to move; Two support rods are installed on each side of the bracket. The support rods are retractable and can support adjacent equipment during use to ensure the stability of the device. The device is placed between the fine forming frame and the extrusion frame, and the bracket is driven to slide by adjusting the transmission mechanism; After determining the specific position of the bracket, adjust the length of the support rod so that its end rests against the side of the extrusion frame.

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