CN201070645Y - Hydraulic pressure bending machine for reducing ell - Google Patents

Abstract

The utility model provides a reducing ell hydraulic pipe bender, belonging to the technical field of the metal pipe manufacture machine, which is used for solving the problem that the manufacture of the machine structure is complex and the working procedure is numerous in the prior reducing ell. A hydraulic pipe bender body is adopted to be provided with a hydraulic master cylinder and a hydraulic pusher; the front part of the hydraulic pusher is provided and connected with a push tube seat, and penetrated and provided with a pull rod, the front head of which is connected with a machine head connecting frame; the machine head connecting frame is provided with a high frequency heating coil; the front part of the machine head connecting frame is provided with a pipe bender head; a reducing ell combination mandrel assembly which is composed of an upper cone module, two lamella bending modules and an incenter wedge bending module is connected between a hanging beam of the pipe bender head and the sinciput head of the pull rod. The structure of the utility model is novel, and the reducing ell hydraulic pipe bender is applied to the manufacture of various pipe bend pipe castings with different diameters and abnormities through the push bending and the diameter extension in a direct way by a tube blank.

Description

Different Diameter Elbow Hydraulic Bending Machine

technical field

The utility model relates to a bending machine for different-diameter elbow pipe fittings in the technical field of metal pipe fitting manufacturing machinery.

technical background

With the continuous development of metal pipes and the rapid advancement of science and technology, the technical requirements for metal pipe fittings manufacturing machinery are also getting higher and higher. In the known technology, the existing metal pipe fittings-reducing elbow production machinery mainly uses a cutting machine to cut the middle plate into a shape plate, and then uses a hydraulic press to mold a tile-shaped semi-reducing elbow, and then welds it to the welding machine. Welding composition, its processing machinery has complicated composition, many procedures, labor-consuming, time-consuming and raw materials, especially there are welds on the body of the different-diameter elbow, and its use is subject to certain restrictions.

Contents of the invention

The purpose of this utility model is to provide a hydraulic bending machine for different-diameter elbows, which solves the problems of the existing different-diameter elbows with complicated structures and many processes, so that it has a novel structure, and the formed mechanical energy can be pushed and bent at one time, saving It saves labor time and raw materials, there is no weld seam on the body of the different diameter elbow, and the produced pipe fittings are a new type of different diameter elbow processing and manufacturing machine with a wide range of applications.

The technical solution adopted by the utility model to solve the above problems is:

A hydraulic bending machine for different-diameter elbows, which is equipped with: a hydraulic pipe bending machine base, a hydraulic master cylinder, a hydraulic pusher, a pull rod, a pipe bending head, a head coupling frame, and a combined mandrel assembly for a different-diameter elbow , a hydraulic master cylinder and a hydraulic pusher are connected to the body of the hydraulic pipe bender. The front part of the hydraulic pusher is connected with a push tube seat and a pull rod is installed. The front head of the pull rod is connected to the head frame, and the head frame It is connected with a high-frequency heating coil for heating the billet, and the pipe bending head is installed at the front of the head frame. Composition, the hanging beam and the hydraulic inclined connecting rod of the pipe bending head are respectively connected to the head frame by the horizontal shaft and the coupling shaft, the hydraulic inclined connecting rod is connected to the hanging beam by the coupling shaft, and the machine head is installed at the lower part of the hanging beam Seat, the lower part of the machine head seat is connected with an adjustable seat screw and a heavy-duty hydraulic cylinder. The combined core mold assembly of the different-diameter elbow composed of wedge modules.

In the above-mentioned hydraulic bending machine for different-diameter elbows, the upper cone module of the combined mandrel assembly of the different-diameter elbow is connected to the hemispherical joint of the tie rod, and the inner bending wedge module is connected to the suspension beam. The inner bending wedge module is made of a ball head and an upper The spherical concave made on the cone module is connected, and the outer circumference of the inner curved wedge module and the upper cone module are connected with two curved petal modules to form a combined different-diameter elbow mandrel assembly.

In the above-mentioned hydraulic bending machine for different-diameter elbows, the axis line of the upper cone module in the combined mandrel assembly of the different-diameter elbows is provided with a through-hole branch to communicate with the gap between the mating surfaces of the two outer peripheral bending petal modules, and the inner bending wedge The outer peripheral body of the module is formed with longitudinal strip grooves. And on the hemispherical joint at the front top of the pull rod, a through hole corresponding to the shaft center hole of the upper cone module is formed. During use, the coolant lubricant is injected from the top of the tie rod into the combined core mold assembly of the different-diameter elbow through the through hole of the hemispherical joint, and a liquid film is formed between the interconnections of the combined core mold assembly, which can greatly reduce the delamination. Die resistance and cooling mandrel.

When the utility model is in use, according to the specifications of the different-diameter elbows processed and bent, the combined mandrel assembly of the different-diameter elbows of the corresponding specifications is selected and connected to the pipe bending head and the pull rod, and the pipe seat is pushed by the hydraulic pusher. Load the tube billet to be pushed, start the machine, and push the tube billet forward by the hydraulic pusher, enter the head frame and be heated by the electric heating coil, then put it into the combined mandrel assembly of the elbow with different diameters, and the pipe bender After the head is expanded while bending the pipe, the mandrel of the elbow will come out. Then proceed to the bending operation of the next different diameter elbow.

Because the design of the utility model adopts the above-mentioned technical scheme, the problems of complicated structure and many working procedures of the existing different-diameter elbow manufacturing machinery are effectively solved. The test results show that compared with the existing technology, it has a novel structure, innovative design, can be bent and formed at one time, saves labor and time, and saves raw materials. Manufacture of different diameter and special-shaped elbow pipe fittings with bending angles of 90°, 60°, 45°, 30°, etc. by pushing and expanding the diameter, and the manufactured pipe fittings have a wide range of applications.

Description of drawings

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

Fig. 1 is the structural diagram of the utility model embodiment.

Fig. 2 is an enlarged cross-sectional view of demoulding along A-A direction of the combined core mold assembly of the different-diameter elbow in the embodiment of Fig. 1 .

The labels in the drawings are: 1 hydraulic pipe bending machine base; 2 hydraulic master cylinder; 3 hydraulic pusher; 4 tube billet; 5 tie rod; 6 high frequency heating coil; Module; 10 horizontal axis; 11 two curved petal modules; 12 oblique connecting rod; 13 hanging beam; 14 machine head base; holes; 20 grooves.

Detailed ways

As the embodiment shown in accompanying drawing 1, the utility model is provided with: hydraulic pipe bending base 1, hydraulic master cylinder 2, hydraulic pusher 3, pull rod 5, pipe bending head, head coupling frame 7 and different diameter elbow Combined mandrel assembly, hydraulic master cylinder 2 and hydraulic pusher 3 are installed on the hydraulic pipe bending body 1, and the bottom of the hydraulic pusher 3 is equipped with a pulley connected to the frame slideway, which can slide forward and backward along the slideway. 3 is equipped with a pull rod 5 and connected to the front part of the hydraulic pusher 3 with a push tube seat connected to the tube blank 4 to be processed, the front head of the pull rod 5 is connected to the head frame 7, and the head frame 7 is equipped with a heating billet The high-frequency heating coil 6, the pipe bending head is installed at the front of the head frame 7, and the pipe bending head is composed of a hanging beam 13, a hydraulic inclined connecting rod 12, a head seat 14, an adjustable seat screw 15, a heavy-duty hydraulic Cylinder 16 is composed, the suspension beam 13 of pipe bending head and the hydraulic tilting connecting rod 12 are mounted on the head frame 7 by the transverse shaft 10 and the coupling shaft 8 respectively, and the hydraulic tilting connecting rod 12 is connected to the suspension beam 13 by the coupling shaft, Install and connect the headstock 14 at the bottom of the suspension beam 13, the bottom of the headstock 14 is connected with an adjustable seat screw 15 and a heavy-duty hydraulic cylinder 16, and the top head of the pull rod is equipped with a hemispherical joint 17 and the suspension beam of the bending machine head. 13 is connected with the different-diameter elbow combined mandrel assembly consisting of the upper cone module 9, the two curved petal modules 11 and the inner curved wedge module 18.

Referring to the accompanying drawings and the embodiment in Fig. 2, the upper cone module 9 of the different-diameter elbow combined mandrel assembly in the utility model is connected to the hemispherical joint 17 of the tie rod, the inner bending wedge module 18 is connected to the suspension beam 13, and the inner bending wedge module 18 The ball head is made to cooperate with the spherical concave made on the upper cone module 9, and the outer circumference of the inner curved wedge module 18 and the upper cone module 9 are connected with two curved petal modules 11 to form a combined different-diameter elbow Mandrel assembly.

The combined mandrel assembly of the elbow with different diameters of the utility model or the upper cone module 9 is formed with a ball head, and the inner curved wedge module 18 is formed with a spherical concave relative connection.

Referring to the embodiment of accompanying drawing 2, the upper cone module 9 in the combined core mold assembly of the utility model with different diameters is formed with a through hole 19 branching to communicate with the gap between the matching surfaces of the two curved petal modules 11 on the outer periphery, and the inner curved Several longitudinal strip grooves 20 are formed on the outer peripheral body of the wedge module 18, and a through hole correspondingly connected to the axial center hole 19 of the upper cone module is formed on the hemispherical joint 17 at the front top of the tie rod.

The hydraulic master cylinder 2 of the present utility model is a hydraulic master cylinder of 1 to 4 cylinders, preferably a hydraulic master cylinder of two cylinders.

Machine head coupling frame 7 of the present utility model is the Longmen archway type machine head coupling frame.

Claims (6)

1. a reducing elbow hydraulic pressure bends machine, it is provided with the hydraulic pipe bender seat, hydraulic main cylinder, pull bar, the bend pipe head, it is characterized in that, also be provided with hydraulic pressure and push away machine (3), head connection frame (7) and reducing elbow composite core formwork assembly, pull bar is the pull bar (5) that the sinciput head is fitted with hemisphere joint (17), on hydraulic pipe bender body (1), be fitted with hydraulic main cylinder (2) and hydraulic pressure and push away machine (3), hydraulic pressure pushes away machine (3) front portion and is connected with the ejector sleeve seat and is coated with pull bar (5), pull bar (5) fore head is connected in head connection frame (7), be fitted with high frequency heating coil (6) on the head connection frame (7), the anterior load bend pipe of head connection frame (7) head connects between the hemisphere joint (17) of hanging beam of bend pipe head (13) and pull bar sinciput head by last conic module (9), the reducing elbow composite core formwork assembly that two curved lobe modules (11) and the curved wedge module (18) of heart are formed.

2. reducing elbow hydraulic pressure according to claim 1 bends machine, it is characterized in that, the hemisphere joint (17) of last conic module (9) cylinder lever connecting rod of reducing elbow composite core formwork assembly, the curved wedge module (18) of heart connect hanging beam (13), the curved wedge module (18) of heart is shaped on the ball impression that is shaped on bulb and the last conic module (9) and is connected, and the periphery after bending wedge module (18) and last conic module (9) docks is at heart joined and connected two curved lobe modules (11).

3. reducing elbow hydraulic pressure according to claim 2 bends machine, it is characterized in that, is shaped on the curved wedge module (18) of bulb, heart on the last conic module (9) of reducing elbow composite core formwork assembly and is shaped on the ball impression connection that is involutory.

4. reducing elbow hydraulic pressure according to claim 1 bends machine, it is characterized in that, last conic module (9) axial line portion in the reducing elbow composite core formwork assembly is shaped on through hole (19) branch and is communicated with the mating surface gap of bending lobe modules (11) with periphery two, be shaped on several vertical rectangular grooves (20) on the periphery body of the curved wedge module (18) of heart, on the preceding top of pull bar hemisphere joint (17), be shaped on the corresponding through hole that is communicated with epicone module axle center hole.

5. reducing elbow hydraulic pressure according to claim 1 bends machine, it is characterized in that, hydraulic main cylinder (2) is the hydraulic main cylinder of 1～4 cylinder.

6. reducing elbow hydraulic pressure according to claim 1 bends machine, it is characterized in that, head connection frame (7) is gantry memorial archway formula head connection frame.

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