CN2882972Y

CN2882972Y - Extruding injection moulded products stretcher

Info

Publication number: CN2882972Y
Application number: CN 200520043687
Authority: CN
Inventors: 陈庐一
Original assignee: 倪美琴
Current assignee: SHANGHAI FUJIANG PLASTIC INDUSTRY GROUP Co Ltd
Priority date: 2005-07-22
Filing date: 2005-07-22
Publication date: 2007-03-28
Anticipated expiration: 2015-07-22

Abstract

A product stretching device for extrusion blow molding aims to improve product strength and solve other technical problems. In detail, the technical scheme relates to that a stretching mechanism that can move repeatedly along the mold head centerline is arranged in parallel with an extruder frame. The moving frame of the stretching mechanism is connected with a support and a clamping device to clamp extrusion blow billets. The clamping device, a clamping module centerline and the mold head centerline share the same line. Therefore, the utility model is applicable to various extrusion blow moldings.

Description

The extrusion-blow molding product stretching device

Technical field:

The utility model relates to the annex of a kind of extrusion blow used equipment, particularly a kind of this equipment.

Background technology:

Blow-molded article, as packing container etc., at food, cosmetics, fields such as chemical industry obtain using very widely, existing blow-molded article, be in the blow moulding machine operation, to finish by follow procedure, the thermoplasticity raw material infeeds die head from feeding conveying appliance (as conveying worm or the like), and its parison of extruding (as tubular parison) enters the mould in the clamping, blows thereupon, cooling forming, finish blow-molded article, the intensity of its goods is normally by selected material decision, therefore, for many years in order to improve the quality of blow-molded article, improve the economic benefit of blowing operation, dealer's ground effort of not having a rest is reclaimed raw material as the multi-layer product utilization and is made internal layer, to reduce cost of material, and for example, improve the goods bearing capacity, to reduce total product wall thickness with excellent Thickness Distribution, conservation, but, assessment on the whole, effect that various measure obtains is not obvious especially; Along with the dealer finds in long-term material research and operation practice, when the thermoplasticity raw material forms the tubular parison of thermoplastification, as stretching through mechanism, the intensity of its blow-molded article can be along with improve, this characteristic, how to be used in the operation procedure of blow moulding machine, be problem demanding prompt solution, and it is technical and all it has huge potential significance economically.

The utility model content:

The technical problems to be solved in the utility model is, a kind of stretching device of extrusion-blow molding product is provided, and it can improve the intensity of blow-molded article, saves the goods material, improves the economic benefit of blowing production.

The technical scheme in the invention for solving the above technical problem is: in a side of die head and clamping; the fuselage of blow moulding machine is provided with one and makes to be parallel to the drawing mechanism that the die head center line moves back and forth; the movable stand of drawing mechanism is fixedly connected with the clamp mechanism of opening of a support and clamping parison, opens the center line of opening support component and clamp assemblies of clamp mechanism and the corresponding conllinear of center line of die head.Open clamp mechanism and open support and the clamping parison from die head, drawing mechanism drives mold center that the parison of opening the clamp mechanism clamping carries over clamping and does to stretch and move, after stretching reaches pre-determined bit, the matched moulds blowing moulding, get final product the goods of prestretched.

The utility model is with drawing mechanism and open the parison of clamp mechanism before to blowing and open support (laterally) and stretching (vertically) in advance, make parison before blow molding, obtain the predeformation of horizontal stroke, vertical both direction, improve the internal structure of material, the product strength of blow molding is obviously improved, the comparable traditional work goods of container wall thickness of the i.e. same carrying of indication reduce, and both can save raw material, also can reduce the goods cost of transportation, and can favourable user obtain lighter articles for use, have good economic benefit.

Description of drawings:

Fig. 1 the utility model extrusion-blow molding product stretching device structural representation.

Open the vertical cross-sectional schematic of clamp mechanism among Fig. 2 Fig. 1.

A is to view among Fig. 3 Fig. 2.

B is to view among Fig. 4 Fig. 2.

C-C cutaway view among Fig. 5 Fig. 2.

The specific embodiment:

With reference to Fig. 1, the extrusion-blow molding product stretching device includes drawing mechanism 1 and opens clamp mechanism 2, and drawing mechanism 1 is the side appropriate position that is fixedly installed on die head 3 and clamping 4.

Drawing mechanism 1 includes hydraulic pump group 11, base 12, movable stand 13, pull bar 14, guide pillar 15, top board 16, valve group 17, carries out oil cylinder 18 and link 19, as shown in Figure 1;

Hydraulic pump group 11, its pedestal are to be installed on the blow moulding machine fuselage 6, and mat pipeline, valve group 17 and execution oil cylinder 18 are connected;

Base 12 is frame-type members that drawing mechanism 1 is fixed in blow moulding machine fuselage 6;

Movable stand 13 is truss structures, and the one end is installed with axle sleeve, wears guide pillar 15 in the axle sleeve, and is and is slidingly matched, and its other end is installed with a hinged seat, and hinged seat can be hinged with an end of pull bar 14, and this end is installed with a link 19 in addition;

Pull bar 14, the one end is articulated in movable stand, and the other end is connected with the piston of carrying out oil cylinder 18, and its center line is parallel with the center line of die head 3, clamping 4;

Guide pillar 15 is column supporting members of drawing mechanism 1, and the one end is fixedly arranged on base 12, and the other end (napex) is installed with a top board 16, and the axle sleeve of sheathed movable stand 13 is and is slidingly matched on the guide pillar 15;

Top board 16, the one side is fixed in guide pillar 15, and opposite side is installed with one and carries out oil cylinder 18, and the valve group 17 that oil cylinder 18 actions are carried out in control can be set on its plate face;

Carrying out oil cylinder 18, is the power that drawing mechanism 1 movable stand 13 moves back and forth, and the big I of its piston stroke press the demand adjusting of blow-molded article different size, and it is hinged that the piston rod of piston is extended through the top of the through hole of top board 16 and pull bar 14.

Open clamp mechanism 2 and include a support component 21 and clamp assemblies 22, as shown in Figure 2, open the end that clamp mechanism 2 is installed in link 19, the movable stand 13 of drawing mechanism 1 can drive a clamp mechanism 2 through link 19 and move back and forth.

The support component 21 of opening of opening clamp mechanism 2 includes framework 211, screw rod 212, left-handed nut 213, expanding bar 214, left-handed nut 215, hydraulic motor 216, shown in Fig. 2,3,4,5;

Framework 211 is support bodys of each member of supporting in the assembly, and its both sides are respectively equipped with the bearing 2100 of supporting screw 212 and guide rod 2101;

Screw rod 212, its two ends are supported on bearing 2100 respectively, and its overhanging end is connected with hydraulic motor 216,

Left and right spin nut 213,215, revolve respectively and be located at screw rod 212, when hydraulic motor 216 drive screws 212, left and right rotation nut 213,215 is done rightabout moving owing to being that thread rotary orientation is different, be that hydraulic motor 216 turns to when changing, left and right spin nut 213,215 can do branchs or close mobile;

Expanding bar 214 is fixing perpendicular rod members that are located on the left and right spin nut 213,215, and the masthead end is made the pyramidal structure of being convenient to stretch into parison.

The clamp assemblies 22 of opening clamp mechanism 2 includes clamping plate 221, four connecting rods 222, and push-and-pull piece 223, hydraulic jack 224, fairlead 225, guide post 226, base plate 227, oil cylinder 228 are shown in Fig. 2,3,4,5;

Clamping plate 221 are two lath-shaped members, and in order to the clamping parison, second splint 221 symmetries are laid in the both sides of the expanding bar 214 of a support component 21, when two plate 221 clampings, be able to push up the parison that folder exposes to expanding bar 214 outsides;

Four connecting rods 222, each rod member are articulated in clamping plate 221, push-and-pull piece 223 and framework 211 respectively, as shown in Figure 4, and two group of four symmetrical respectively both sides that are laid in a support component 21 of connecting rod 222;

Push-and-pull piece 223, one ends are articulated in four connecting rods 222, and the other end is connected with the piston of hydraulic jack 224;

Hydraulic jack 224 is to be installed in framework 211 bottom sides, and only as the power of one group of four connecting rod 222 folding, another organizes four connecting rods 222 is designs of adopting servo-actuated;

Opening on the clamp mechanism 2, be provided with one group and drive the structure that framework 211 moves, its base plate 227 is members that clamp mechanism 2 is opened in supporting, and an end of base plate 227 is fixedly connected on link 19, when the movable stand 13 of drawing mechanism 1 moves, drive base plate 227 through link 19 and move thereupon; Be installed with an oil cylinder 228 on the base plate 227, the piston of oil cylinder 228 is connected with framework 211, can drive framework 211 and move, and framework 21 bottoms are installed with two guide posts 226, the stretch through fairlead 225 that is fixed in base plate 227 of two guide posts 226 is and is slidingly matched, and uses when keeping framework 211 to move steady.

During operation; drawing mechanism 1 is carried out oil cylinder 18 actions; movable stand 13 is promoted; movable stand 13 a driving clamp mechanism 2 to the die orifice of die head 3 closes on setting position; the tubular parison of extruding from die head 3 die orifices walks to a clamp mechanism 2 tops; oil cylinder 228 actions promote framework 211; the parison inner chamber is stretched in expanding bar 214; hydraulic motor 216 rotations; screw rod 212 drives a left side; right nut 214 outwards moves mutually; thereby drive expanding bar 214 is opened parison and is supportted to desired location; realize the cross directional stretch distortion of parison; hydraulic jack 224 actions are subsequently closed up (position shown in Fig. 4 solid line) with four connecting rods 222; clamp parison; drawing mechanism 1 is carried out oil cylinder 18 actions; through pull bar 14; movable stand 13; link 19; it is drop-down with the parison of clamping to open clamp mechanism 2; realize the longitudinal stretching distortion of parison; movable stand 13 comes downwards to desired location; hydraulic jack 224 counteragents; four connecting rods 222 open (position shown in Fig. 4 dotted line); hydraulic motor 216 reverse rotations; expand bar 214 and close up (as Fig. 2 position); oil cylinder 228 counteragents, pulling framework 211, expanding bar 214 breaks away from the parison inner chamber; clamping 4 actions; template is with the parison clamping, and the work of blow head assembly can obtain the high strength blow-molded article that forms through the blowing of prestretched parison with the parison blow molding.

Claims

1, a kind of extrusion-blow molding product stretching device; comprise die head, clamping; it is characterized in that: in a side of die head (3) and clamping (4); the fuselage of blow moulding machine (6) is provided with one and makes to be parallel to the drawing mechanism (1) that die head (3) center line moves back and forth; the movable stand (13) of drawing mechanism (1) is fixedly connected with a clamp mechanism (2) of a support and clamping parison, opens the center line of opening support component (21) and clamp assemblies (22) of clamp mechanism (2) and the corresponding conllinear of center line of die head (3).

2, stretching device according to claim 1, it is characterized in that drawing mechanism (1) includes hydraulic pump group (11), base (12), movable stand (13), pull bar (14), guide pillar (15), top board (16), valve group (17), carry out oil cylinder (18), link (19), be installed with guide pillar (15) on the base (12), being arranged with movable stand (13) on the guide pillar (15) is and is slidingly matched, the top of guide pillar (15) is installed with top board (16), be installed with on the top board (16) and carry out oil cylinder (18), the piston of carrying out oil cylinder (18) is connected with pull bar (14), and pull bar (14) other end is hinged with movable stand (13).

3, stretching device according to claim 1 is characterized in that an end of drawing mechanism (1) movable stand (13) is connected with a link (19), and the other end of link (19) is connected with the base plate (227) of a clamp mechanism (2).

4, stretching device according to claim 1, the support component (21) of opening that it is characterized in that a clamp mechanism (2) includes the bearing that framework (211), screw rod (212), left-handed nut (213), expanding bar (214), right-handed nut (215), hydraulic motor (216), screw rod (212) two ends are supported on framework (211) respectively, be installed with left and right sides spin nut (213,215) on the screw rod (212), the end of screw rod (212) is connected with hydraulic motor (216), and left and right sides spin nut is installed with expanding bar (214) respectively on (213,215).

5, according to claim 1 or 4 described stretching devices, the left and right spin nut (213,215) of opening support component (21) that it is characterized in that a clamp mechanism (2) is set in two guide rods (2101) respectively and is and is slidingly matched.

6, stretching device according to claim 1, the clamp assemblies (22) that it is characterized in that a clamp mechanism (2) includes clamping plate (221), four connecting rods (222), push-and-pull piece (223), hydraulic jack (224), fairlead (225), guide post (226), base plate (227), oil cylinder (228), clamping plate (221) are hinged with four connecting rods (222), four connecting rods (222) other end is hinged with push-and-pull piece (223), push-and-pull piece (223) is connected with hydraulic jack (224), be installed with oil cylinder (228) on the base plate (227), the piston of oil cylinder (228) is connected with framework (211), framework (211) bottom is installed with two guide posts (226), and two guide posts (226) are extended through the fairlead (225) that is fixedly arranged on base plate (227) and are and are slidingly matched.