Permanent extrusion type pipe joint crimping tool

[0022] The present invention is further described below with reference to the accompanying drawings and examples.

[0023] Referring to the accompanying drawings, a permanent extrusion tube joint crimping tool, including a cylinder, a press, the cylinder, and a manual hydraulic pump or an electric pump, the pressing joint edge of the cylinder The bit groove slides into the cylinder and the power supply tube is connected to the pressure gap, the manual hydraulic pump or the electric pump is provided, and the cylinder pushes the pressing press to extrud the pipe joint to deform the tube joint to form a connection. The unit of the pressure joint crimping portion is set to the metric unit.

[0024] The pressure joint includes jacket 1, the upper core mold 2, the lower core mold 3, the slider 4, wherein the upper core mold 2, the lower core mold 3 is disposed in the jacket 1, the down core mold 3 The lower side is provided with a slider 4, and the lower side of the slider 4 is in contact with the upper end of the cylinder, and the slider 4 can slide upwardly in the jacket 1.

[0025] The cylinder includes a cylinder body 5, a upper plunger 6, a lower plunger 7, a bottom screw 8, a joint 9, a tube joint 10, a butterfly spring 11, an upper washer 12, a lower washer 13, the cylinder body 5 lower end setting There is an inner thread, the cylinder body 5 is provided with a butterfly spring 11, and the upper butterfly spring 11 is provided with an upper plunger 6, and the upper plunger 6 is in contact with the slider 4. The upper plunger 6 is set with an upper washer 12 for sealing, and the upper plunger 6 is provided with a lower plunger 7, and the downstream 7 is used for sealing undercut 13, the downset. 7 The bottom screw is provided below, and the bottom screw 8 is provided with an external thread that matches the cylinder body 5, the bottom screw 8 and the cylinder body 5, and the intermediate setting of the bottom screw 8 is used for rotation. The through hole passes through the joint 9.

[0026] Preferably, the arc surface radius of the jacket 1 and the upper core mold 2 is smaller than the curved radius of the upper core mold 2 and the jacket 1.

[0027] Preferably, the curved surface radius of the lower core mold 3 and the slider 4 is larger than the curve radius of the slider 4 and the lower core mold 3.

[0028] Preferably, the upper core mold 2 is less than the radius of the arc surface of the tube to be pressed and the tube to be pressed.

[0029] Preferably, the lower core mold 3 is less than the radius of the arc surface to be pressured with the tube to be pressed.

[0030] Preferably, the jacket 1, the slider 4 is provided with a beveled to prevent overvoltage. When this bevel is fitted, the biggest pressure cannot continue to be crimped, and the crimp is terminated.

[0031] When the homework, the manual hydraulic pump is continuously applied to the cylinder of the lower plunger 7, and the slider 4 in the cylinder is forcing the slider 4 on the plunger 6 and the slider 4 to flow together. . Open the returning valve, the high pressure in the cylinder is resemble the oil chamber, and the upper plunger 6 is returned to the original position together with the lower core mold of the slider, and the pressure of the pipeline connector is completed. Contact it is unrecoverable crimp.

[0032] The present invention is designed for the metric pipe connector, which is designed for extrusion tools for the metric joint; the crimping tools of each specification catheter are composed of a power unit (manual hydraulic pump or electric pump), a pressure joint, and a manual pump ( The manual pump is purchased for the finished product), the power unit and the pressure joint are self-developed products. The present invention is formed: the outer radial refrigeration pressure of the catheter is referred to as an extrusion. The principle of the molding of the present invention: through the circumferential radial extrusion joint, the diameter of the joint is small, and the annular boss within the joint is tightened in the catheter, thereby forming a tight connection. Precision control method: hydraulic pump pressure instrument reading control. Processing catheter specification: all kinds of stainless steel, aluminum alloy catheter, electric / manual hydraulic pump working pressure: 0-160 MPa. The present invention can solve the current crushing process of my country's military aircraft hydraulic pressure pipeline system in high pressure 28MPa metric extruded pipeline connector; the crimping tool optimizes sealing structure, solves the seepage of crimping tools in high pressure work .

[0033] In a specific implementation, a waterproof tape is added in the threaded connection of the bottom screw and the cylinder body 5, as in the sealing connection of the high pressure water pipe.

[0034] In a detailed implementation, the glue is added to the threaded connection of the bottom screw and the cylinder body 5, and the water rear cured glue is formed to form a sealing connection.

[0035] In a specific implementation, the thread connection of the bottom screw 8 and the cylinder body 5 increases the design of the cone sealing structure, that is, when the pressure is, the mating surface is a tapered surface, the cone is moved to the cone surface. Tighten it.

[0036] The above is only the preferred embodiments of this patent, and is not limited to the scope of this patent, and the equivalent structure or equivalent process transformation, direct or indirectly use in other related techniques, which will be used in other related techniques. protected range.