Double blade expansion pipe slotting machine

Abstract

The invention discloses a double-blade expansion pipe grooving machine. A power output shaft of a motor of the double-blade expansion pipe grooving machine and a power output shaft of a speed reducer of the double-blade expansion pipe grooving machine are double-side output shafts with the two output ends. A main transmission shaft is driven through the speed reducer. A notch cam, two positioning cams and a feeding cam are installed on the main transmission shaft. A double-blade cutting saw is composed of a cutting saw swing frame, a saw blade shaft installed on the cutting saw swing frame and two saw blades installed on the saw blade shaft. A workpiece clamp corresponding to the saw blades is fixed to a rack. The workpiece clamp is provided with workpiece positioning grooves matched with round pipes to be machined. The workpiece positioning grooves are internally provided with saw blade advancing and retreating grooves corresponding to the saw blades. A material pushing frame is arranged at the lower portion of a falling groove, can vertically swing around a rotating support and is connected with a rotating push rod in a hinged mode through a short rocker. The rotating push rod is provided with a pawl mechanism pushing a main shaft to rotate in a one-way stepping mode. The expansion pipe grooving machine is simple in structure, low in use cost and convenient to operate and maintain.

Description

technical field [0001] The invention relates to a slotting device for an expansion tube of an expansion bolt, which is a slotting device for opening four longitudinal through grooves in the expansion tube of the expansion bolt. It is suitable for grooving expanded steel pipes made of seamless steel pipes with a wall thickness of 1-5 mm. Background technique [0002] At present, the grooving of expanded steel pipes with large wall thickness is mostly done manually. Generally, the operator uses tools to clamp the expansion tubes and then uses special grinding wheels, milling blades, saw blades, etc. to cut out 4 or more expansion tubes. Multiple longitudinal slots, this slotting method is not only labor-intensive and low-efficiency for the operator, but also prone to personal injury or equipment and tool damage accidents, and the slotting distribution of the processed expansion tube is uneven, Reduced product quality. Although mechanical equipment has been used to slot expan...

AI Technical Summary

Problems solved by technology

[0002] At present, the grooving of expanded steel pipes with large wall thickness is mostly done manually. Generally, the operator uses tools to clamp the expansion tubes and then uses special grinding wheels, milling blades, saw blades, etc. to cut out 4 or more expansion tubes. Multiple longitudinal slots, this slotting method is not only labor-intensive and low-efficiency for the operator, but also prone to personal injury or equipment and tool damage accidents, and the slotting distribution of the processed expansion tube is uneven, reduced product quality

Although mechanical equipment has been used to slot expansion tubes with large wall thickness before, this equipment uses pneumatic devices to clamp and turn the processed expansion tubes, and at the same time uses pneumatic devices to control the direction of the grooving saw blade. The expansion tube of the slot is advanced to complete the slotting operation and exit the slotting station operation. This kind of equipment is not only difficult to operate, has low machining accuracy, high use and maintenance costs, and low processing efficiency. It is also not suitable for small businesses or households.

In particular, the slotting of expansion pipes is a labor-intensive work, which is usually done by family workshop enterprises. First, the technical level of the operators is low, and second, it is difficult for family workshop enterprises to build a pneumatic workstation with stable pressure. Equipment is not promoted and used

In addition, the automatic slotting machines for expansion bolt expansion tubes disclosed in Chinese patent documents are all slotting equipment for processing thin-walled expansion tubes. mm expanded steel pipe

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