CN201249520Y - Built-in dry-type stock mold for brightening surface of a sectional material - Google Patents

Abstract

The utility model discloses a built-in dry-type stock mold for brightening surfaces of a sectional material. The entry end of a sectional material (12) of the stock mold is provided with cooling tanks which are parallel with the surfaces of the sectional material to be brightened and air exhausting tanks distributed along the width direction of the surfaces of the sectional material to be brightened; the cooling tanks (24) and (18) and the air exhausting tanks (21) and (19) are arrayed into at least two rows, and the cooling tanks (24) and (18) and the air exhausting tanks (21) and (19) are arrayed at intervals in the stock mold along the movement direction of the sectional material. Because the surfaces of the sectional material to be brightened are arranged in the stock mold and are in zero-distance contact with an extrusion mold head, and all the surfaces of the sectional material are cooled synchronously and stretched uniformly, the built-in dry-type stock mold effectively guarantees that the surfaces of the sectional material to be brightened are uniformly cooled at the first stage and have good brightening effect. In addition, the built-in dry-type stock mold has wide application range, can brighten a plurality of surfaces simultaneously without being influenced by the appearances and the shapes of the surfaces, has compact, simple and durable structure, and is easy to operate and maintain.

Description

Built-in dry type stock mould to the section bar suface-brightening

Technical field

The utility model relates to and a kind ofly in the extrusion molding process extruded parisons is carried out cooling and shaping, and increases the device of its surface brightness.

Background technology

At present, known plastic hollow profile shapes extrusion molding cooling apparatus for shaping just adopts the vacuum principle of finalizing the design outward, promptly around the section bar cross section of hollow, form certain negative pressure power, and the hollow of section bar is inner and the external atmosphere pressure intercommunication, thereby around the section bar cross section, form certain pressure differential, guarantee the applying of pattern of fever base and stock mould die cavity, the cooling medium in the stock mould water channel is taken away heat to its cooling and shaping with conduction pattern simultaneously.

In various calibrators, the dry type stock mould is first-selected cooling and shaping device.Because of when extrusioning shaping, parison does not directly contact cooling medium, but takes away heat by water route in the stock mould, carries out slow cooling but.Therefore, residual stress is little, the each side good mechanical performance, and be difficult for defectives such as generation is out of shape, song sticks up.

The surface-brightening of section bar is that parison is through stock mould cooling, typing, simultaneously by stock mould contact friction generation.For to the section bar suface-brightening, present dry type stock mould has installed an external bright plate additional at the section bar entrance point usually, stock mould and bright plate structure thereof are as depicted in figs. 1 and 2, the upper and lower cover plate 1,3 of stock mould is provided with cooling water water-in and water-out passage 9,11 and air chamber 6, be provided with vacuum way 7 and vacuum pore 8 that number row vacuumizes section bar 12 surfaces in the upper and lower template 2,4, and straight hole cooling duct 10; Bright plate is fixed on the section bar upstream end of stock mould, be provided with a cooling bath surperficial parallel in the bright plate 16 with section bar 12 blasts, the cooling water import and export 15,14 that communicates with cooling bath is arranged on the bright plate 16, be provided with the groove 13 of bleeding that the section bar surface is vacuumized between bright plate 16 and the stock mould cope match plate 2, have the bleed hole that communicates with the groove 13 of bleeding in the cope match plate 2, this bleed hole communicates with the vacuum pore 7 of cope match plate 2 front ends, make air channel 13 communicate with air chamber 6 in being located at stock mould upper cover plate 1, this bright plate 16 is positioned by shop bolt 17 and stock mould.When section bar 12 enters in the bright plate 16, cooling water is entered in the cooling bath by water inlet 15, discharge and take away heat by delivery port 14 again, make the cooling rapidly of section bar blast surface, negative pressure device vacuumizes by the 5 pairs of air chambers 6 of vacuum pumping opening that are located on the stock mould upper cover plate 1 simultaneously, vacuumizes by vacuum way 7 and bleed hole and 13 pairs of section bar 12 surfaces of groove of bleeding, and makes the blast surface tightly be adsorbed on mold cavity surface, increased the friction with mold cavity surface, thereby played purpose the section bar suface-brightening.Because bright plate is external, make that stock mould and extrusion die can't be close, and the cavity surface of bright plate relies on the shop bolt location, because of mismachining tolerance causes being difficult to guaranteeing to flush with the main body cavity surface, the hole of bleed simultaneously can't be strengthened and strengthen vacuum, main chamber face is again to cool off with the straight hole cooling duct, can't guarantee that section bar blast surface evenly cools off the phase I, can reduce brightening effect greatly like this, can cause simultaneously asynchronously again, draw and stretch inhomogeneously, can reduce the cold punching of section bar with the cooling of other faces, various mechanical properties such as heating back size changing rate, even also may cause shape bending.

Summary of the invention

Poor in order to solve the brightening effect that above-mentioned external brightening device exists, each face cooling is asynchronous, the even problem of inhomogeneous and big face inhomogeneous cooling stretches, the utility model provides a kind of built-in dry type stock mould to the section bar suface-brightening, partly be built in the stock mould to the section bar blast, contact with the extrusion die zero distance, each face cooling stretches evenly synchronously, effectively the assurance blast surface phase I evenly cools off, and brightening effect is good.

The utility model is to solve like this: be provided with the cooling bath parallel with section bar blast surface and along the groove of bleeding that distributes on the section bar blast face width direction at the section bar upstream end of stock mould.

In order to strengthen cooling effect and the enhancing suction-operated to the section bar surface, the described cooling bath and the groove of bleeding have twice at least.Because be provided with the multiple tracks groove of bleeding, effect strengthens greatly to the section bar vacuum suction, thus the friction that has increased section bar and mold cavity surface, thereby can improve brightening effect.

Cooling water intake tunnel in the described first road cooling bath water inlet and the stock mould communicates, and delivery port is located on the stock mould sidewall.Can utilize the original cooled water supply channel of stock mould like this, not need the blast part is provided with water supply installation independently.

The beneficial effects of the utility model are: owing to partly be built in the stock mould to the section bar blast, contact with the extrusion die zero distance, each face cooling stretches evenly synchronously, effectively the assurance blast surface phase I evenly cools off, brightening effect is good, and the scope of application is wide, according to needing, can carry out blast to a plurality of faces simultaneously, be not subjected to the influence of profile and shape, compact conformation, simple and durable, and easy operating is safeguarded.

Description of drawings

Fig. 1 is existing brightening device structural representation.

Fig. 2 is a T place partial enlarged drawing among Fig. 1.

Fig. 3 is the utility model structural representation.

Fig. 4 is the local enlarged diagram in Q place among Fig. 3.

Fig. 5 is along K-K line cutaway view among Fig. 4.

Among the above-mentioned figure, 1, upper cover plate; 2, cope match plate; 3, lower cover; 4, following template; 5, vacuum pumping opening; 6, air chamber; 7, vacuum way; 8, vacuum pore; 9, intake tunnel; 10, straight hole cooling duct; 11, exhalant canal; 12, section bar; 13, vacuum air drain; 14, apopore; 15, inlet opening; 16, bright plate; 17, shop bolt; 18, cooling bath; 19, the groove of bleeding; 20, strengthen air chamber; 21, the groove of bleeding; 22, strengthen air chamber; 23, intake tunnel; 24, cooling bath; 25, delivery port; 26, sealing plate.

The specific embodiment

To shown in Figure 5, section bar 12 upstream ends of stock mould are provided with the surperficial parallel cooling bath 24,18 of twice and section bar blast and twice along the groove 21,19 of bleeding that distributes on the section bar blast face width direction as Fig. 3. Cooling bath 24,18 and bleed groove 21,19 in cope match plate 2 along the section bar moving direction alternately.Stock mould is offered groove on the cope match plate 2 of section bar upstream end, have the diversion passage 23 that communicates with stock mould cooling water intake tunnel 9 in the groove, the groove outer face seals with sealing plate 26, gap between sealing plate 26 and cope match plate 2 forms the first road cooling bath 24, has the first road cooling bath, 24 delivery ports 25 on cope match plate 2 sidewalls.The second road cooling bath 18 directly processes on cope match plate 2, and a side has the interior straight hole cooling duct 10 parallel with section bar of passage and cope match plate to communicate, and the stock mould cooling water intake tunnel 9 on the upper cover plate 1 communicates with the second road cooling bath 18.Two groove 21,19 tops of bleeding are provided with the reinforcement air chamber 22,20 of sectional area greater than the groove 21,19 of bleeding, and the air chamber 6 in strengthening air chamber 22,20 tops and being located at upper cover plate 1 communicates.

Its operation principle is as follows: the pattern of fever base that comes out from extrusion die enters stock mould under the effect of hauling machine, under the effect that vacuum pumping opening 5 vacuumizes, air chamber 6 vacuums in the upper cover plate are improved, directly act on the pattern of fever base surface of section bar 12 by the twice groove 21,19 of bleeding, make it to attach fully with the stock mould die cavity.Simultaneously, the cooling water one tunnel that enters in the stock mould enters the first road cooling bath 22 through diversion passage 23, is directly discharged by delivery port 25, to section bar blast surface cool efficient height again; Another road enters in the second road cooling bath 18, to section bar blast surface cool, and then by the straight hole cooling duct 10 in the one wing passage inflow stock mould, section bar integral body is cooled off, and is discharged by the water outlet of the stock mould port of export at last.Because be provided with the twice groove of bleeding, effect strengthens greatly to the section bar vacuum suction, thus the friction that has increased section bar and mold cavity surface, thereby can improve brightening effect.

Claims (3)

1, built-in dry type stock mould to the section bar suface-brightening is characterized in that: the section bar of stock mould [12] upstream end is provided with the cooling bath parallel with section bar blast surface and along the groove of bleeding that distributes on the section bar blast face width direction.

2, built-in dry type stock mould to the section bar suface-brightening according to claim 1 is characterized in that described cooling bath [24,18] and the groove of bleeding [21,19] have twice at least, and cooling bath and bleed groove in stock mould along the section bar moving direction alternately.

3, built-in dry type stock mould to the section bar suface-brightening according to claim 2 is characterized in that the interior cooling water intake tunnel [9] of described first road cooling bath [24] water inlet and stock mould communicates, and delivery port [25] is located on the stock mould sidewall.

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