A kind of mould of going for a stroll that can bend tube with various outer diameter
Technical field
The present invention relates to the mould that tubing is gone for a stroll and is shaped.
Background technology
Going for a stroll is one of main bend mode of tubing, and it is widely used on the various bending machines commonly used such as hydraulic pipe bender, CNC tube bending machine.One cover is gone for a stroll and is had in the mould: the bending die that bending die is inserted that studs with that is σ shape, directly insert and cooperate to clamp tubing to be bending, and to rotate the clamping die of next crooked tubing and three elements of pressure mould of pushing down tubing to be bending simultaneously along with bending die with this bending die.They all have the circular-arc type groove that is complementary with the external diameter that is bent tubing.As required, a cover is gone for a stroll and can also be used mandrel, wrinkle resistant etc. in the mould.When disregarding resilience, the radius at the type groove smallest cross-sectional place of bending die has determined to be bent the inner radius of tubing.In the existing mould of going for a stroll, bending die and insert, the type groove of clamping die and pressure mould all is that tubing according to the external diameter of a definite specification designs and makes.In other words, a cover mould of going for a stroll can only bend a kind of tubing of external diameter, can not realize smoothly, also can't obtain qualified bend pipe spare otherwise go for a stroll.For example, if bend the tubing of big external diameter with the mould of going for a stroll that originally is fit to less external diameter, then bent the outer surface of tubing must clamped mould and bending die insert and seriously crush; Otherwise, bent tubing and can not be bent mould and clamping die clamping, therefore can not realize smoothly going for a stroll, even realized bending, " fasciation " in the bending area cross section also can compare seriously.Therefore, the external diameter that bends tubing when need just must be changed the whole series mould of going for a stroll not simultaneously.So, not only can not enhance productivity, die cost also cannot lower.
Summary of the invention
The objective of the invention is,, provide a kind of mould of going for a stroll that can bend tube with various outer diameter at above-mentioned the deficiencies in the prior art.
To achieve these goals, technical scheme of the present invention is a kind of like this mould of going for a stroll that can bend tube with various outer diameter.Aspect same as the prior art is, this mould comprises the bending die that bending die is inserted that studs with that is σ shape, directly insert and cooperate to clamp tubing to be bending, and to rotate the clamping die of next crooked tubing along with bending die simultaneously and push down the pressure mould of tubing to be bending with this bending die.Bending die and bending die are inserted, clamping die and pressure mould all have the circular-arc type groove that the external diameter with tubing to be bending is complementary.Its improvements are, the smallest cross-sectional that bending die and bending die are inserted with its circular-arc type groove is the boundary, divide for insert on half block, the bending die on the bending die that they is connected as one by hold-down screw and bending die under insert under the half block, bending die two-layer up and down; Clamp the bending die that is σ shape between up and down two-layer and regulate pad.Clamping die is the boundary with the smallest cross-sectional of its circular-arc type groove, divides for the clamping die that they is connected as one by hold-down screw to insert and two parts of trip holder; Clamping die insert and trip holder between clamped clamping die and regulated pad.The pressure mould is the boundary with the smallest cross-sectional of its circular-arc type groove, divides for the pressure mould that they is connected as one by hold-down screw to insert and pressure die holder two parts; The pressure mould insert and the pressure die holder between clamped the pressure mould and regulated pad.Wherein, bending die is regulated pad, clamping die regulates pad and pressure mould adjusting pad has replaceable one deck or which floor combination, and removable thickness has two~six groups, and one group of its minimum thickness is 0 (just can all not clamp and regulate pad).Regulate pads at three kinds and all fill up to the thickest situation, the arc radius of circular-arc type groove equate with corresponding tube outer diameter (be that bending die and bending die are inserted, clamping die and pressure mould have circular-arc type groove all when designing determined tubing maximum outside diameter be complementary).
Compared with prior art, the present invention has following technique effect:
Because the adjusting pad by not clamping or clamp different-thickness (or regulate pad combination), can have with standard tube outer diameter series in one section continuous corresponding type groove of two~six kinds of external diameter specifications.Though except that maximum outside diameter tubing, less than this external diameter all can not with this corresponding type groove coupling (or say not exclusively coincide) fully mutually.But following at least thereon two Fang Jun of these tubing to be bending still can be suppressed by this correspondence type groove.So, just can avoid of the prior art the sort of very effectively because of circular-arc type groove " fasciation " problem greater than can't clamping of bringing of tube outer diameter and bending sections; Owing to all fill up to the thickest situation at three kinds of adjusting pads, the arc radius of circular-arc type groove equates with corresponding tube outer diameter again.So, when bending the different tubing of these two~six kinds of external diameter specifications, such problem that weighs or scratch pipe outer surface because of the radius of its circular-arc type groove less than the radius that is bent tubing wounded in the prior art can not appear all.In other words, the adjusting pad (or combination of adjusting pad) by not clamping or clamp different-thickness just can bend the tubing of these two~six kinds of various outer diameter specifications with this mold of the present invention under the prerequisite that guarantees bending quality exactly.Obviously, this not only can improve enhances productivity, and has also reduced die cost simultaneously.
The present invention is further illustrated below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the vertical view (observing under installation, the user mode, down together) of bending die among the present invention
Fig. 2 is the right view of Fig. 1
Fig. 3 is the shaft side figure (angle according to convenient identification is drawn, and is not the shaft side figure of Fig. 1 position, down together) of bending die among the present invention
Fig. 4 is the vertical view of clamping die among the present invention
Fig. 5 is the left view of Fig. 4
Fig. 6 is the shaft side figure of clamping die among the present invention
Fig. 7 is the shaft side figure that clamping die is regulated pad among the present invention
Fig. 8 is the vertical view that bending die is regulated pad among the present invention
Fig. 9 is the cutaway view of Fig. 8
Figure 10 is the shaft side figure that bending die is regulated pad among the present invention
Figure 11 is the vertical view of pressure mould among the present invention
Figure 12 is the vertical view of Figure 11
Figure 13 is the shaft side figure of pressure mould among the present invention
Figure 14 is the shaft side figure that the pressure mould is regulated pad among the present invention
Figure 15 is the present invention's (overlooking) installation diagram under the user mode of crooked large outside diameter pipe material
Figure 16 be among Figure 15 A-A to amplification profile
Figure 17 when diameter pipes (the present invention outside bending is little) be equivalent to A-A among Figure 15 to amplification profile
The specific embodiment
A kind of mould of going for a stroll of tube with various outer diameter that can bend is (with reference to figure 1~Figure 15).This mould comprises the bending die that bending die is inserted that studs with that is σ shape, and directly inserting with this bending die cooperates to clamp tubing to be bending, and to rotate the clamping die of next crooked tubing and the pressure mould of pushing down tubing to be bending simultaneously along with bending die.Bending die and bending die are inserted, clamping die and pressure mould all have the circular-arc type groove that the external diameter with tubing to be bending is complementary.The smallest cross-sectional that bending die among the present invention and bending die are inserted with its circular-arc type groove is the boundary, divide for by hold-down screw 8 (because obvious, only drawn out screw hole and/or screw via hole in the accompanying drawing, down with) insert on half block 1, the bending die on the bending die that they are connected as one 2 and bending die under insert under the half block 3, bending die 4 two-layer up and down; Clamp the bending die that is σ shape between up and down two-layer and regulate pad 7.Clamping die among the present invention is the boundary with the smallest cross-sectional of its circular-arc type groove, divides for the clamping die that they is connected as one by hold-down screw 11 to insert 9 and two parts of trip holder 10; Clamping die insert 9 and trip holder 10 between clamped clamping die and regulated pad 12.Pressure mould among the present invention is the boundary with the smallest cross-sectional of its circular-arc type groove, divides for the pressure mould that they is connected as one by hold-down screw 15 to insert 13 and pressure die holder 14 two parts; The pressure mould insert 13 and pressure die holder 14 between clamped the pressure mould and regulated pad 16.Wherein, bending die is regulated pad 7, clamping die regulates pad 12 and pressure mould adjusting pad 16 has replaceable one deck or which floor combination, removable thickness has two~six groups, and a group of its minimum thickness is 0 when the minimum outer diameter tubing in bending this segment limit (i.e., do not clamp these and regulate pad).Regulate pads at three kinds and all fill up to the thickest situation, the arc radius of circular-arc type groove equates with corresponding tube outer diameter---Figure 16 drafting be that three kinds of adjusting pads all fill up to the thickest situation the state when bending maximum outside diameter tubing 17.Arrow among Figure 15, expression pressure mould is inserted along with bending die rotates the rotation direction that bends tubing with bending die.
The adjusting pad of said in this specific embodiment " replaceable one deck " can be for example 1mm, 2mm, 3mm ... on the pad of different-thickness, said " which floor combination " regulates pad, can be the situation of 1mm+2mm=3mm for example.
Obviously, it is poor that described two~six groups of removable thickness should corresponding equal between one section adjacent two tubing in the standard tube outer diameter series external diameter, specifically organizes number and should determine according to actual conditions.For example, in one section in the selected external diameter series, when the external diameter difference of each the adjacent tubing between maximum outside diameter and the minimum outer diameter differs big, can be only design according to two groups (promptly having only a maximum outside diameter and a minimum outer diameter) or three groups; Otherwise, then can design according to five groups~six groups.Purpose is to guarantee when bending the tubing of minimum outer diameter wherein as far as possible, two sides are pressed part about this tubing has enough width (certainly, this from engineering in fact, if theoretically, as long as both radius differences, its compacting place are straight lines that does not have width only just).What Figure 17 drew is not clamp under these pad situations the state when bending minimum outer diameter tubing 18.
In this specific embodiment, insert on the bending die 2 and bending die under insert and 4 be fixed on the corresponding bending die under the half block 1 and bending die on the half block 3 by hold-down screw 5 respectively, constitute the bending die of σ shape; The tongue end parts that the bending die of σ shape is regulated pad 7 again by hold-down screw 6 be installed in insert on the bending die 2 and bending die under insert between 4.For avoiding interfering, fixedly clamp bending die regulate the screw via hole that the hold-down screw 6 of pad 7 tongue end parts passed through the aperture should than defined in the standard or suggestion greatly.
Same as the prior art, the design structure that has the counterpart with bending machine to be bound up also on bending die, clamping die and pressure mould.In this specific embodiment, the draw bail of bending die is the arbor hole (with reference to figure 1,3) with a pair of keyway, and the draw bail of clamping die and pressure mould is dovetail groove (with reference to figure 4,6 and Figure 11,13).
In this specific embodiment (with reference to figure 4,5,6 and Figure 11,12,13), the cross section of trip holder 10 and pressure die holder 14 all is designed to the L type, with allow corresponding clamping die insert 9 and the pressure mould insert 13 when being fixedly mounted on this trip holder 10 and the pressure die holder 14 respectively, the one side that deviates from its circular-arc type groove is the facade inboard of this L type closely.Obviously, corresponding clamping die adjusting pad 12 and pressure mould adjusting pad 16 just has been strip in (with reference to figure 7,14) in this structure.
Further, for guarantee reliability of the present invention at process aspect, in this specific embodiment (Fig. 2,5,6,12,13), when bending die is regulated pad 7, clamping die and is regulated pad 12 and pressure mould and regulate pad 16 and be installed in the corresponding assembly, one side each regulate pad corresponding circle arcuation type groove all inwardly shrink 2~3mm.
The present invention once was that 25mm, minimum outer diameter are that 20mm carried out the checking design with the maximum outside diameter.By being the experiment of going for a stroll of 1mm~3mm mild steel tubing to wall thickness, prove: when bending external diameter and being the mild steel tubing of 25mm, do not produce and do not weigh and scratch vestige wounded; When bending external diameter and being the mild steel tubing of 20mm, " fasciation " degree is in the scope of permission.