CN2582849Y - Multilayer material storaging type blow moulding machine - Google Patents

Abstract

The utility model relates to a multilayer material storage type blow moulding machine, which mainly solves the technical problems of the improvement of production efficiency, etc. The utility model has a technical proposal that each feed inlet of a multi-layer squeezing mould head is respectively connected with charging barrel storage type delivery device. The utility model is suitable for producing products which have a special performance that single plastic can not reach.

Description

Multilayer storing type blow moulding machine

Technical field:

The utility model relates to the used equipment of a kind of blowing moulding, the particularly a kind of preform of multilayer or blow moulding machine of parison of using.

Background technology:

In the application of blow moulding machine, as make packing containers such as food, cosmetics, chemical industry, in order to reach the unitary plastic property that is beyond one's reach, as require the special barrier or the goods of surface characteristic, or utilize and reclaim raw material as internal layer, the single raw material of comparable use reduces cost, or with the Thickness Distribution of excellence to reduce total wall thickness, conservation or the like adopts the multilayer extrusion way of multiple thermoplasticity raw material in the blow moulding machine operation, can make the composite article of 2 to 5 layers of different plastics; At this moment, on blow moulding machine, use the die head of multilayer, as shown in Figure 1, 2, the body 11 of die head 1 can circumferentially be laid with 2～5 charging apertures, Fig. 2 is three charging apertures 12,13,14, these die heads 1 are useful on the structure of being made up of heart-shaped groove and screw thread axle of little centre-to-centre spacing, and the die head that the screw thread axle is only arranged 1 structure that is used for big centre-to-centre spacing; The feeding conveying appliance 2 of blow moulding machine is the screw conveyor of using always 2, and each conveying device 2 is connected with each charging aperture 11,12,13 of die head 1 respectively, during the blow moulding machine operation, is to carry out in the mode of friction feeding; Above-mentioned feeding style, though can form multi-layer co-extruded operation to die head 1 each charging hole 11,12,13 feed, but the speed of its feeding is slow, utilization rate of equipment and installations is not high, production efficiency is lower, and it in process of feeding co-extrusion slowly, influences the combination of each layer different material continuously, and the product property of gained is not good enough yet.

Summary of the invention:

Technical problem to be solved in the utility model provides a kind of improved multilayer storing type blow moulding machine, and it is feed fast, enhances productivity, and can improve the quality of goods.

The technical scheme in the invention for solving the above technical problem is: each charging aperture at multi-layer co-extruded die head is connected with a barrel storing type conveying device respectively.

Its barrel storing type conveying device of the utility model mat, make it when the die head charging of sandwich construction, the multiple thermoplasticity raw material of each layering is in the oil cylinder lead-screw that shoots material realizes shooting material fast action, enhance productivity, and this barrel structure of mat realizes good temperature of charge control, improve the combination between each minute interlayer different material, thereby improve the quality of goods.

Description of drawings:

Fig. 1 is existing blow moulding machine multilayer film header structure schematic diagram.

Fig. 2 is that A-A circumferentially lays schematic diagram to each die inlet among Fig. 1.

Fig. 3 is traditional blow moulding machine conveying device and die head connection diagram.

Fig. 4 is the utility model structural representation.

Fig. 5 is each charging aperture of multi-layer co-extruded die head and a barrel storing type conveying device connection diagram among Fig. 4.

The specific embodiment:

With reference to Fig. 4,5, multilayer storing type blow moulding machine includes compositions such as multi-layer co-extruded die head 1, barrel storing type conveying device 3, clamping, moving-mold mechanism and frame, wherein:

Multi-layer co-extruded die head 1, as Fig. 1, shown in 2, the body 11 of die head 1 is cylindric, be concentric circles with the center line of cylinder heart-shaped groove and screw thread axle are set respectively, every layer is equipped with the corresponding charging aperture that is connected with conveying device, Figure 2 shows that three charging apertures 12,13,14, circumferential laying at body 11, each charging aperture 12,13,14 also are the differing heights position vertically, because the improvement in performance of conveying device 3, circumferentially can lay than the existing more charging aperture of multi-layer co-extruded die head, promptly charging aperture quantity can be 2 to 7, Figure 5 shows that 6 charging apertures 12,13,14,15,16,17.

Barrel storing type conveying device 3, as shown in Figure 4, this technical scheme is to be proposed by the applicant, and its China Patent No. is ZL96222472.3, and barrel storing type conveying device 3 includes transport portion 31, running part 32;

The screw rod 311 of transport portion 31 is connected with running part 32, and the top of screw rod 311 and barrel 312 front portions are formed with a storage cavity 313, and a corresponding charging aperture of storage cavity 313 and multi-layer co-extruded die head 1 is connected; But running part is provided with hydraulic motor 324 through 311 rotations of retainer 323 drive screws, which is provided with the oil cylinder 321 that shoots material, and is fixed in retainer 323 and the sliding guide rod 322 that is assigned in; During convey materials, material volume in the mat barrel 312 increases, screw rod 311 is moved behind guide rod 322 through retainer 323, thereby be formed on the function of storing in the storage cavity 313, simultaneously because the storing of material before entering multi-layer co-extruded die head 1, make the temperature of multiple thermoplastic can obtain good control, thereby improve the quality of goods, behind storing and setting amount material, with the quick acting of the oil cylinder 321 that shoots material,, be that the promotion plunger of material conveying shoots material with screw rod 311 through retainer 323, compare with existing conveying device, its production efficiency is significantly improved.

Multi-layer co-extruded die head 1 is connected as shown in Figure 4 with the inlet of barrel storing type conveying device 3, the circumferential connection of the two as shown in Figure 5, each barrel storing type conveying device 3 is connected to each charging aperture 12,13,14,15,16,17, constitutes a multilayer storing type blow moulding machine.

Claims (1)

1, a kind of multilayer storing type blow moulding machine comprises die head and conveying device, it is characterized in that: each charging aperture (12,13,14,15,16,17) at multi-layer co-extruded die head (1) is connected with a barrel storing type conveying device (3) respectively.

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