CN1072041C

CN1072041C - Protective mould means for bending small-bore thin wall metal floral tube

Info

Publication number: CN1072041C
Application number: CN97119909A
Authority: CN
Inventors: 曾绍谦
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-23
Filing date: 1997-10-23
Publication date: 2001-10-03
Anticipated expiration: 2017-10-23
Also published as: CN1215635A

Abstract

The present invention relates to a protective mold apparatus for bending small-bore metal floral tubes with thin walls, which comprises a plasticity mold core component arranged in a tube orifice, a pair of plasticity fractal molds covered out of a tube wall, a rubber tube sheathed out of the fractal molds, a vortex sheet spring sheathed out of the rubber tube, an extension spring sheathed out of the vortex sheet spring, and sealing glands respectively locked with the open ends at both sides of the extension spring to form a protective mold apparatus; the protective mold apparatus is used in bending small-bore straight metal floral tubes with thin walls of which have artistic stripe bodies. The apparatus of the present invention has protective effect on equally dispersing tube wall curve action force and preventing tube wall collapse in curve.

Description

The protective mould means for bending of small-bore thin wall metal floral tube

The invention provides a kind of protective mould means for bending of small-bore thin wall metal floral tube, the master has the plastic core piece of deformation energy with treating with mounting one in the floral tube pore that bends, so that prop up the hole wall of tool art decoration, can equalization bear and disperse the bending active force; Simultaneously and outside tube wall, be covered with a plasticity and divide pattern, to shield and sustain floral tube outer wall with artistic line body; And make branch pattern overcoat establish a sebific duct, and shield and sustain the branch pattern so that have under the flexible preceding topic at it, prevent that branch pattern pine is from the floral tube outer wall; And make the outside sheathed folded mutually layer by layer sea whelk spring of sebific duct, an and sheathed again extension spring outside the sea whelk spring, make when stressed bending, can shield and sustain and support sebific duct, divide pattern and floral tube, and the impartial bending active force that disperses, impel the required arc curvature that is bent into that each position of floral tube all can be impartial.

In the prior art, in the operation that metal straight pipe is bent, the easiest method is for to place metal straight pipe on the bending machine, and the mat machinery arm of force bend body and is put in order, and the method generally is used on the pipe distribution operation of steel pipe (as gas iron pipe, water pipe etc.).Yet up to now, be not that all metal tubes all are applicable to and bend whole processing on the bending machine, in fact its body must have certain thickness and rigidity, and body is shiny surface, just can avoid bending add possess man-hour prevent to be out of shape may.Such as the made aluminum pipe of nonferrous alloy or copper pipe etc., promptly be not suitable for directly bending with bending machine, because the rigidity of the metal tube of these materials is poor than the steel and alloy pipe, is easy to cause excessive stress concentration phenomenon in the pore, thereby causes the collapse-deformation of tube wall.Moreover, the made metal tube of which kind of material no matter, if its caliber is too small and tube wall is crossed when approaching, the increase that degree of difficulty in the bending operation is relative, still more if on the metal tube of path and tool thin-walled during the molded tube wall that artistic line body arranged (being called the metal floral tube in the present invention), utilize more easy-operating bending machine that it is bent, this technology also Shang Weijian reaches, that is the technology that is difficult to implement, force at product (referring to metal tube) when the R﹠D direction of the sophistication of design strides forward, run into the technical bottleneck that is difficult to overcome.Such as some exquisite product objects such as frivolous tubule shape metal railing, table pin, chair pin or showing stand, when demand bends after it is shaped to straight floral tube, adopt prior art to be difficult to finish bending processing with artistic line body profile and demand bending.

At above-mentioned background, some only be had the thin metal floral tube of minor diameter and tube wall and bend when forming the bend pipe form, use simpler and easy and general bending machine, prior art can't be reached.So:

Purpose of the present invention promptly is to provide a kind of protective mould means, enable to be installed between the inside and outside tube wall of metal floral tube of path thin-walled, bracing or strutting arrangement when using bending machine that floral tube is bent can effectively prop up the tube wall of the special line body of artistic shape, the impartial effect of disperseing the bending active force of performance.

For achieving the above object, technical scheme of the present invention is: a kind of protective mould means for bending of small-bore thin wall metal floral tube, it comprises: a core piece, and it is to form by putting into a plastic bag and load mercury and plastic bag sealed at plastic bag in the pore of straight floral tube; A pair of minute pattern, they are irritated by excellent power glue or rubber and are molded into, and have respectively double die cavity meeting straight floral tube outer wall contour shape and and the peripheral die wall that becomes the semicolumn bodily form; A flexible rubber pipe, it is nested on the peripheral die wall of branch pattern; One sea whelk spring, it is sheathed on the periphery of sebific duct; An extension spring, it be set in the peripheral of described sea whelk spring and these extension spring two ends welded respectively have outside the ring body of tooth; Two cappings, they have Nei Ya and thereby can be locked on the described ring body and offered an one end respectively in these two cappings and sealed by cover plate, the other end is aimed at the chamber groove of described pore respectively; A resilient force that is subjected to loading spring and transportable valve head, it is arranged in the groove of described chamber and its end near pore is exposed at groove outside, described chamber and elasticity and is shoring and be arranged in floral tube both sides pore core piece, wherein is formed with an able to turn on or off valve opening between the perisporium of described chamber groove and valve head.

As seen, protective mould means of the present invention possesses following all technical characterstic is arranged:

One: contain at pore and to be provided with a plasticity core piece, be to utilize to insert a plastic bag in the pore and carry mercury to make it to seal and make, so that the height ratio principal characteristic of mat mercury removes to squeeze the plastic bag that expands, core piece can fully be carried between full each line body slit in hole wall, and possess the deformation energy that auxiliary hole wall is resisted the bending active force, the bending active force that impels each position of hole wall to be born is dispersed to the convergence equalization.

Its two: the floral tube outer wall is covered with a plasticity somatotype die cavity, be to utilize excellent power glue or rubber to cast the die cavity of tool floral tube outer wall profile type body, and the peripheral die wall form of tool circle, touch and protect floral tube outer wall line body to avoid the extruding persecution when the bending in order to reach tight subsides; Simultaneously also can treat demand intensity, and in excellent power glue or rubber, add after iron sand evenly mixes that founding becomes to divide half-and-half the pattern form again, shields and sustain the effect of floral tube with enhancing according to straight floral tube to bend.

Its three: the flexible sebific duct of a sheathed tool on the peripheral die wall of minute pattern is to utilize PVC or PET material to make, and can effectively shield and sustain the stability of branch pattern matched moulds state when crooked bearing the bending active force.

Its four: at the peripheral sheathed one deck sea whelk spring of sebific duct, when bearing the bending active force, can disperse conduction power to sebific duct, make each position of branch pattern and bend pipe all can bear impartial bending active force in the mode that area is touched in bigger subsides.

Its five: in the sheathed again one deck extension spring in sea whelk spring periphery, make and disperse the bending active force conduct on sea whelk spring, sebific duct, branch pattern and the floral tube more even.

Its six: extension spring bilateral openend lock is established capping, be provided with the chamber groove in this capping, in the groove of chamber and be provided with and load with the elasticity valve head that spring presses and expose, can hold the core piece in the floral tube bilateral pore, when bearing the hole wall bending, can absorb the safety device that squeezes the nargin that expands as core piece, but while this chamber groove of mat is used as preventing to supply with when the hole wall pressurized is excessive the space of mercury pressure release.

In sum, protective mould means of the present invention makes when stressed bending, and the impartial bending active force that disperses impels the required arc curvature that is bent into that each position of floral tube all can be impartial.Especially to the exquisite decorations pipe of the artistic line body of some light and thin type path small sizes, and some artistic bend pipes of demand higher-strength still behind bending, available device of the present invention is able to be made by simple and easy.

For the present invention is described in detail in detail again, please refer to following accompanying drawing and also illustrate in detail in conjunction with the embodiments as the back:

Fig. 1: be the schematic perspective view that desire of the present invention is bent into straight floral tube the bending floral tube;

Fig. 2: be the three-dimensional exploded view of protective mould means of the present invention when assembling;

Fig. 3: be protective mould means cut-away view of the present invention;

Fig. 4: be that the present invention utilizes protective mould means parcel floral tube to make the schematic diagram that bends in bending machine;

Fig. 5: be that the present invention utilizes the cut-away view after protective mould means parcel floral tube bends.

First see shown in Figure 1ly, utilize protective mould means of the present invention, can will only have less caliber and than bending floral tube 2 forms that are bent into required arc curvature of straight floral tube 1 success of light wall pipe wall; And,, then be the puzzlement that must cause the tube wall collapse-deformation if, directly place bending machine to bend it not having under any situation of protecting mould of installing for the molded straight floral tube 1 that artistic decoration is arranged on this tube wall.Therefore using protective mould means of the present invention, is of crucial importance and indispensable in the operation of bending metal floral tube.

Protective mould means for bending of the present invention, comprise utilize a core piece 3, a pair of

minute pattern

41 and 42, one sebific duct 5, a sea whelk spring 6, an extension spring 7 and two

cappings

8 and 80 form (as shown in Figure 2).Wherein:

Core piece 3 tool plasticity are to utilize to insert a plastic bag 31 in the pore 10, and loading mercury 32 makes it to seal made (as Fig. 2) in plastic bag 31; So that in pore 10, the height ratio principal characteristic of mat mercury 32 removes to squeeze bloated plastic bag 31 can fully carry between full each line body slit in pore 10 (as Fig. 3) core piece 3, possess the deformation energy of auxiliary hole wall 11 opposing bending active forces, the bending active force that impels hole wall 11 each position to bear is dispersed to convergence equalization (cooperating shown in Figure 5).

Dividing half-and-

half pattern

41 and 42 mainly is to utilize excellent power glue or rubber to irritate to be molded as;

double die cavity

43 and 44 with outer wall 12 profile type bodies of floral tube 1; and has peripheral die wall 45 and 46 (as Fig. 2) to semicircular body; enable to utilize

double die cavity

43 and 44 and the outer wall 12 of floral tube 1 closely pasted touch cover and close (as Fig. 3), have artistic line body in order to institute on the outer wall 12 that reaches protection floral tube 1 and avoid the extruding persecution when the bending.(cooperating shown in Figure 5).Certainly, the present invention divides pattern 41 and at 42 o'clock irritating molded work, also can make it even mixing and add iron sand in excellent power glue or rubber according to the intensity of straight floral tube 1, and then founding becomes to divide half-and-

half pattern

41 and 42 and shields and sustain the effect of floral tube to reach to strengthen again.

With a flexible rubber pipe 5 that utilizes PVC or PET to make, the outer commentaries on classics that is nested in

branch pattern

41 and 42 is to (as Fig. 2 and Fig. 3) on semicircular

body die wall

45 and 46, enables to shield and sustain the stability (as shown in Figure 5) of

branch pattern

41 and 42 matched moulds state when crooked bearing the bending active force.

Sea whelk spring 6 is the peripheries (as Fig. 2 and Fig. 3) that are sheathed on sebific duct 5, make when bearing the bending active force, can disperse conduction power to sebific duct 5 in the mode that area is touched in bigger subsides, and make the tube wall of

branch pattern

41,42 and bend pipe 1 can bear impartial bending active force (cooperating shown in Figure 5).

This extension spring 7 is the peripheries (as Fig. 2 and Fig. 3) that are sheathed on sea whelk spring 6, so as to disperse to conduct to sea whelk spring 6, sebific duct 5 one by one,

divide pattern

41 and 42 with floral tube 1 on bending active force more even (cooperating shown in Figure 5), the bilateral open end of extension spring 7 is simultaneously welded the ring body 71 and 72 (as Fig. 3) that is provided with the outer tooth 73 of tool and 74 respectively, enables to lock respectively in its bilateral openend to establish

capping

8 and 80.

As shown in Figure 3, all be provided with a chamber groove 81 in these two

cappings

8 and 80,82 sealings of chamber groove 81 1 end tool cover plates, in the chamber groove 81 and be provided with the elasticity valve head 84 that the spring of loading spring 83 is pressed, the head end of valve head 84 is exposed and can elasticity shore core piece 3 in the bilateral pore 10 of floral tube 1, when bearing hole wall 11 bendings, can absorb the safety device of crowded bloated nargin as core piece 3; 84 of the perisporium of this chamber groove 81 and valve heads are possessed a valve opening that can be open and close 85 simultaneously, can make the runner of mercury 32 pressure releases when excessive as supplying with hole wall 11 pressurizeds, so as to allow mercury 32 can inflow chamber grooves 81 in collection deposit, and reach the effect of avoiding outflow and appropriate pressure release.

Moreover, as shown in Figure 4, be to utilize protective mould means parcel floral tube of the present invention to make the situation that acceptance bends in bending machine 9, the floral tube pipe fitting 91 that wherein will be equiped with protective mould means is put on bending seat 92, utilize clamping plate 93 and swing arm wheel 95 pairs of pipe fittings of bending bar 91 on 94 to carry out shuttle-type bending process of the mechanical arm of force, make the straight floral tube 1 that is stated from protective mould means in original can be bent into the form of bending floral tube 2.

Therefore, comprehensive above explanation will be not difficult to find that the present invention is that genus can be for the technique device that highly utilizes on the industry, especially the exquisite decorations pipe of artistic line body that belongs to light and thin type path small size at some, adopt device of the present invention, its bending that originally can't implement processing can be implemented and finished, make some behind bending still the artistic bend pipe of demand higher-strength be able to be made by simple and easy, therefore ask the present invention's power of granting a patent.

Claims

1, a kind of protective mould means for bending of small-bore thin wall metal floral tube, it comprises:

A core piece (3), it is to form by putting into a plastic bag (31) and seal at plastic bag (31) loading mercury (32) and with plastic bag in the pore (10) of straight floral tube (1);

A pair of minute pattern (41,42), they are irritated by excellent power glue or rubber and are molded into, and have peripheral die wall (45) and (46) that double die cavity (43) that meets straight floral tube outer wall (12) contour shape reaches (44) and become the semicolumn bodily form respectively;

A flexible rubber pipe (5), it is nested on the peripheral die wall (45) and (46) of branch pattern (41) and (42);

One sea whelk spring (6), it is sheathed on the periphery of sebific duct (5);

An extension spring (7), it be set in the peripheral of described sea whelk spring (6) and this extension spring (7) two ends weld respectively gone up have outside the ring body (71,72) of tooth (73,74);

Two cappings (8) and (80), they have Nei Ya and thereby can be locked in that described ring body (71,72) is gone up and these two cappings in offered an one end respectively by cover plate (82) sealing, the other end is aimed at the chamber groove (81) of described pore (10) respectively;

Resilient force that is subjected to loading spring (83) and transportable valve head (84), it is arranged in the groove of described chamber and its end near pore (10) is exposed at groove outside, described chamber and elasticity and is shoring and be arranged in floral tube (1) both sides pores (10) core piece (3), wherein is formed with an able to turn on or off valve opening (85) between the perisporium of described chamber groove (81) and valve head (84).