CN201552220U

CN201552220U - Deformation-tracking bending die for rectangular thin-wall tube

Info

Publication number: CN201552220U
Application number: CN2009202544283U
Authority: CN
Inventors: 申国庆; 刘焕新; 李世平; 李景欣; 姚保富
Original assignee: CHAGNZHI BIGSTARS METAL-FORMING MACHINE MANUFACTURER CO LTD
Current assignee: CHAGNZHI BIGSTARS METAL-FORMING MACHINE MANUFACTURER CO LTD
Priority date: 2009-11-06
Filing date: 2009-11-06
Publication date: 2010-08-18
Anticipated expiration: 2019-11-06

Abstract

The utility model relates to a die for bending a tube, in particular to a deformation-tracking bending die for a rectangular thin-wall tube. The die comprises a main bending die, a follow-up sliding block, a clamping jaw and deformation-tracking core heads, wherein each deformation-tracking core head comprises a connecting rod, chain plates, a dowel pin and a core head body; a plurality of chain plates are connected through the dowel pin and mounted in a plurality of core heads; one end of each chain plate connected together is connected with the connecting rod through the dowel pin; the connecting rod is connected with the mandrel cylinder of a bending machine; the main bending die is mounted on the main shaft of the bending machine through a key; and the follow-up sliding block and the clamping jaw are arranged on above the thin-walled tube and can tightly clamp or loosen sectional material under the drive of the cylinder. The bending forming of the rectangular thin-walled tube is realized by connecting the die with the bending machine after the combination. The utility model has the advantages of high tube bending working accuracy and high working efficiency, and reduces more than 50 percent of cost by compared with the conventional sand-filling tube bending method.

Description

Rectangular thin walled tube stock tracking deformation bending mould

Technical field

The utility model relates to the mould that a kind of bending pipes is used, specifically a kind of rectangular thin walled tube stock tracking deformation bending mould.

Background technology

The workpiece that utilizes rectangle thin wall pipe material to bend is widely used in industries such as shipbuilding, rolling stock manufacturing, oil, chemical industry and building.At present for the following several modes of the many employings of the making of pipe fitting:

1. for the workpiece that bending radius is big, tube wall is thicker, generally on profile bender, process;

2. the workpiece less for bending radius, that tube wall is thicker is generally processed on bending machine;

3. the workpiece less for bending radius, that tube wall is thin, the general mode of filling out sand and heating that adopts is processed, and this kind processes efficient is low, processing cost is high.Also manyly when less demanding for workpiece accuracy complete on bending machine, phenomenon as shown in Figure 1 very easily appears in the cross sectional shape of its workpiece elbow, and the bend pipe precision is relatively poor.

Summary of the invention

The purpose of this utility model provides a kind of rectangular thin walled tube stock tracking deformation bending mould that can bend rectangle thin wall pipe material accurately.It can cooperate the common apparatus of forging industry----bending machine, can be with the brake forming of rectangular thin-wall metal pipe material high accuracy.

The utility model is by the principal curvature mould, with movable slider, clamping claw and tracking distortion core print are formed, follow the tracks of the distortion core print by connecting rod, carrier bar, pin, the core print body is formed, a plurality of carrier bars are installed in a plurality of core print bodies and by pin and connect, one of the carrier bar that couples together is connected with connecting rod by pin, connecting rod is connected with bending machine plug oil cylinder, the principal curvature mould is installed on the bending machine main shaft by key, with movable slider, clamping claw is above rectangle thin wall pipe material, slide with rectangle thin wall pipe material with movable slider, with movable slider, clamping claw clamps or loosens the driving of section bar by oil cylinder.

Two forks of above-mentioned carrier bar, first fork, each has stuck circular hole.

Above-mentioned core print external body is a shape in the tubing, in the rectangular through-hole that can penetrate carrier bar is arranged, there is half slot at two ends.

One on above-mentioned connecting rod has two forks, twoly sticks porosely, and one has internal thread.

During work, stretch out plug oil cylinder piston bar in the position of loosening, make and follow the tracks of the deformed region that the distortion core print is in shape bending with movable slider and clamping claw; Make section bar pass tracking distortion core print during material loading and be placed on correct operating position, make then with movable slider and clamping claw action and compress section bar, can carry out crooked instruction this moment, the principal curvature mould is rotated under the drive of bending machine main shaft, and with movable slider under the driving of oil cylinder with the horizontal slip of rate of bending coupling, clamping claw mates with rate of bending and moves; After the bending pipes moulding, the backhaul of bending machine plug oil cylinder makes and follows the tracks of distortion core print disengaging deformed area, makes at last with movable slider and clamping claw backhaul and can take off workpiece.

The utility model has following advantage compared with prior art:

Bend pipe operating accuracy height, high efficiency, and more traditional husky heating bend method expense of filling out reduces more than 50%.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the cross sectional shape figure that utilizes after common die bends rectangle thin wall pipe material,

Fig. 2 is a structural representation of the present utility model,

Fig. 3～Figure 10 is a part schematic diagram of the present utility model.

Figure 11～Figure 20 is a part schematic diagram of the present utility model.

Among the figure, 1. connecting rod, 2. carrier bar, 3. pin, 4. core print body, 5. with movable slider, 6. clamping claw, 7. principal curvature mould, 8. bending machine main shaft, 9. linking bond, 10. bending machine plug oil cylinder.

The specific embodiment

The utility model is by principal curvature mould 7, with movable slider 5, clamping claw 6 and tracking distortion core print are formed, follow the tracks of the distortion core print by connecting rod 1, carrier bar 2, pin 3, core print body 4 is formed, 2 one two forks of carrier bar, one first fork, each has stuck circular hole, core print body 4 outsides are shape in the tubing, in the rectangular through-hole that can penetrate carrier bar 2 is arranged, there is half slot at two ends, 1 one on connecting rod has two forks, two stick porose, one has internal thread, and carrier bar 2 is installed in the core print body 4, and by pin 3 a plurality of carrier bars 2 that are installed in the core print body 4 is coupled together, 2 one of the carrier bars that couples together pass through pin 3 and are connected with connecting rod 1, connecting rod 1 is connected with bending machine plug oil cylinder 10, and principal curvature mould 7 is installed on the bending machine main shaft 8 by linking bond 9, with movable slider 5, clamping claw 6 is above rectangle thin wall pipe material, slide with rectangle thin wall pipe material with movable slider 5, with movable slider 5, clamping claw 6 can clamp or loosen section bar under the driving of oil cylinder.

Claims

1. rectangular thin walled tube stock tracking deformation bending mould, it is characterized in that by the principal curvature mould, with movable slider, clamping claw and tracking distortion core print are formed, follow the tracks of the distortion core print by connecting rod, carrier bar, pin, the core print body is formed, a plurality of carrier bars are installed in a plurality of core print bodies and by pin and connect, one of the carrier bar that couples together is connected with connecting rod by pin, connecting rod is connected with bending machine plug oil cylinder, the principal curvature mould is installed on the bending machine main shaft by key, with movable slider, clamping claw is above rectangle thin wall pipe material, with movable slider, clamping claw clamps or loosens the driving of section bar by oil cylinder.

2. rectangular thin walled tube stock tracking deformation bending mould as claimed in claim 1 is characterized in that two forks of described carrier bar, first fork, and each has stuck circular hole.

3. rectangular thin walled tube stock tracking deformation bending mould as claimed in claim 1 is characterized in that described core print external body is a shape in the tubing, in the rectangular through-hole that can penetrate carrier bar is arranged, there is half slot at two ends.

4. rectangular thin walled tube stock tracking deformation bending mould as claimed in claim 1 is characterized in that one on described connecting rod has two forks, twoly sticks porosely, and one has internal thread.