CN2311351Y

CN2311351Y - Plastic tube parison infrared preheating device

Info

Publication number: CN2311351Y
Application number: CN 97214700
Authority: CN
Inventors: 林子祥; 张冬郎
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-29
Filing date: 1997-10-29
Publication date: 1999-03-24
Anticipated expiration: 2007-10-29

Abstract

The utility model relates to a plastic tube parison infrared preheating device used for producing plastic hollow vessels in a two-step method. The utility model is composed of a machine frame, a power device, a driving device, a plastic pipe parison conveyer mechanism driven by the driving device, a heating device, etc., wherein, the power device and the driving device are installed in the machine frame. The plastic pipe parison conveyer mechanism is a circular conveying track composed of a driving wheel, a driven wheel, and a chain. The chain is provided with a pipe parision supporting bracket. The parallel circular conveying track is divided into a heating track and a cooling track by a baffle, wherein, both sides of the heating track are provided with infrared heating pipes, the upper part of the heating track is provided with a draught fan and the lower part of the cooling track is provided with a fan and a cooling air box.

Description

The infrared preheater of plastic pipe

The utility model relates to the pipe preheater of plastic containers, is the corollary equipment that two-step method is produced hollow plastic container.

Produce hollow plastic container with injection, stretch blow two-step method, be characterized in bottleneck through injection mo(u)lding, have smooth, intensity height, good seal performance; Bottle is by the stretch blow moulding, and compressive resistance is good, is particularly suitable for packing fizz, as Coca-Cola, Sprite etc.Need carry out preheating before the stretch blow to the pipe of injection moulding in the process of the said goods, existing the plastic pipe preheating device is more representational is divided into two types: a kind of is fixed baking oven type, as Chinese patent ZL88221296.X, name is called " equipment of producing plastic containers ", this equipment is put into the electric preheating baking oven with pipe, and is relatively simple for structure, and volume is little, but its shortcoming is the preheating lack of homogeneity, the product rejection rate height; Another kind of is movable, the disc rotation is arranged, as Chinese patent ZL93209753.7, name is called " a kind of rotary infrared heating device ", ring rotation is also arranged, as Chinese patent ZL94220608.8, name is called " plastic pipe preheater ", ZL92223455.8, name is called " public rotation infrared external reflection plastics preheater ", and ZL93221888.1 and ZL92220907.7 etc.The characteristics of movable plastic pipe preheater not only have and rotatablely move, and its system of processing all adopted infrared material, so compared with fixed preheater, the preheating speed improves, uniformity improves, rapid operation, convenience.But existing various rotary plastics pipe preheater ubiquity following shortcoming: the one, and the orbit of plastic pipe is the heating road usually entirely, basically there is not cooling duct, only having made also only is the nature cooling, there is not artificial cooling provision, therefore, a support mould of delivery pipe produces the heat savings in continuous operation, make the plastic pipe oral area softening, influences product quality.The 2nd, the temperature control in infrared ray heating road relies on power supply to regulate, as on/off or regulation voltage, when temperature reaches in limited time, automatically outage or voltage descend, the heating channel temp is reduced, prescribe a time limit when temperature is reduced to down, power supply is connected automatically or voltage is heightened automatically.Rely on power supply to control the way of heating channel temp, it has lost the ultrared characteristics of using, because of infrared ray is used for heating mainly is to rely on light source to play a role, after the outage of heating road or reducing voltage, though intensity still keeps, but light source weakens, the infrared ray effect loses, therefore, and the pre-thermal mass fashion time difference of plastic pipe, very unstable, greatly influenced product percent of pass.

The purpose of this utility model is the defective that overcomes prior art, designs a kind of cooling of pressure feed track that has, and reduces pipe supporting bracket mould temperature, avoids the heat savings; The heating road is adopted the drainage temperature adjustment, make infrared facility keep constant light source, guarantee the plastic pipe preheater that product is stable.

The technical scheme of the infrared preheater of the utility model plastic pipe is: by frame, power of installing in the frame and transmission device, the plastic pipe conveying mechanism that transmission device drives, and heater etc. form, so-called plastic pipe conveying mechanism is a driving wheel, driven pulley and chain are formed annular feed track, the pipe bearing support is installed on chain, it is characterized in that annular feed track arranged side by side being divided into heating road and cooling duct by dividing plate, infrared ray heating tube is installed in both sides in the heating road, air-introduced machine is installed in the top in heating road, and fan and cool wind box are installed below cooling duct.

The infrared preheater of plastic pipe of the present utility model is installed gear on the pipe bearing support, the holder mould is installed on the gear shaft, and gear matches with tooth bar in the frame, and the long limit of pipe bearing support is connected with the chain of conveying mechanism.

The infrared preheater of plastic pipe of the present utility model is installed 3 gears on each pipe bearing support, 3 gears intermesh, and the holder mould is installed on every rooted tooth wheel shaft.

The infrared preheater of plastic pipe of the present utility model, gear on its pipe bearing support matches with rackwork, so-called rackwork is the holder that is positioned in the frame, an adjustment hole is arranged in the holder, positioning bar, spring and pressure regulating screw are installed in the adjustment hole, and the head of positioning bar matches with gear.

The infrared preheater of plastic pipe of the present utility model, the long limit of its pipe bearing support are installed the roller first down, and guide rail is arranged in frame, the roller first matches with guide rail, roller second is installed in the minor face outside of pipe bearing support, and the upper and lower of roller second has sliver to constitute guide groove, and roller second is moved in guide groove.

The infrared preheater of plastic pipe of the present utility model, its heater has governor motion, so-called governor motion is a mounting bracket in the frame, and the height adjusting screw(rod) is installed in the support, and screw rod drives cross bar and moves up and down, match with the chute of support in two of cross bar, two swivel nuts of the cross bar second line of a couplet are installed positive and negative screw rod in the swivel nut, link to each other with reflecting plate under the swivel nut, infrared ray heating tube is installed on the reflecting plate, and there is filter band the infrared ray heating tube inboard.

The infrared preheater of plastic pipe described in the utility model, mainly contain following characteristics: the one, annular plastics pipe feed track is divided into heating road and cooling duct, air-introduced machine is installed in the top in heating road, rely on the air draft size of air-introduced machine to make the temperature in the heating road keep stable, and infrared tube keep light source from start to finish in whole heating process.Therefore, change the power supply temperature adjustment of prior art into air inducing and take out hot temperature adjustment, make the effect of being not fully exerted of infrared ray heating function, pre-heat effect is stable.The 2nd, special cooling duct is not only arranged, and cooling fan, bellows are installed in cooling duct, with the artificial coolings such as holder mould of forcing cooling to make defeated road pipe.The 3rd, 3 holder moulds are installed on every pipe bearing support, can be according to the concrete size cases of pipe, select both sides for use 2, or select 1 in central authorities for use, to use flexibly, convenient, adaptability is wide.The 4th, rackwork is installed in frame, its objective is to make 3 holder mode-gears keep normal engaged, stability of rotation.The 5th, under the long limit of pipe bearing support and minor face, roller is arranged, roller is cooperated by guide rail and sliver, makes conveying mechanism stable, quality assurance.The 6th, governor motion is arranged in the heater, make reflecting plate together with infrared ray heating tube and filter band energy lifting and width adjusting, adapt to the needs of different sizes or height plastic pipe.

Fig. 1 is the infrared preheater structural representation of the utility model plastic pipe;

Fig. 2 is the defeated road mechanism of the infrared preheater annular of a utility model plastic pipe vertical view;

Fig. 3 is that the utility model plastic pipe infrared preheater pipe bearing support and gear cooperate schematic diagram with rackwork;

Fig. 4 is the utility model plastic pipe infrared preheater pipe bearing support and gear, holder mould vertical view;

Fig. 5 is the infrared preheater infrared ray heating tube of the utility model plastic pipe and reflecting plate and filter band schematic diagram.

Below in conjunction with Fig. 1-Fig. 5 embodiment of the present utility model is done detailed explanation.

1, frame; 2, cooling duct; 3, dividing plate; 4, heating road; 5, control cabinet; 6, air-introduced machine; 7, support; 8, height adjusting screw(rod); 9, cross bar; 10, positive and negative screw rod; 11, swivel nut; 12, chute; 13, reflecting plate; 14, infrared ray heating tube; 15, filter band; 16, pipe holder mould; 17, gear; 18, tooth bar; 19, go up sliver; 20, roller second; 21, following sliver; 22, minor face; 23, pipe bearing support; 24, roller first; 25, guide rail; 26, grow the limit; 27, chain; 28, driven shaft; 29, cooling blower; 30, driving shaft; 31, driving wheel; 32, pressure regulating screw; 33, holder; 34, positioning bar; 35, driven pulley; 36, spring; 37, pin; 38, chute; 39, plastic pipe.

The utility model relates to the pipe pre-heating device of injection, stretch blow two-step method production plastic hollow vessel.This equipment is installed power and is driven driving shaft 30 in a rectangular frame 1, driving shaft drives driving wheel 31, circularizes rotation (as shown in Figure 2) by chain 27, driven pulley 35, driven shaft 28.Chain 27 links to each other with pipe bearing support 23, and gear 17 is installed on the pipe bearing support 23, generally has 3 gears to intermesh, on holder mould 16 is arranged, during use 2 of both sides commonly used or middle 1, decide according to plastic pipe.Gear is along with chain movement the time, cooperated by tooth bar 18 to produce rotations, makes the plastic pipe homogeneous heating.In order to make 3 gears engaged normal, four groups of gear rackworks are installed at the edge of frame, as Fig. 2, shown in Figure 3, rackwork is the holder 33 that is positioned in the frame, the adjustment hole front end of holder has positioning bar 34, and positioning masthead portion is orifice and cooperates with gear 17, has chute 38 to cooperate with pin 37 in the positioning bar, positioning bar 34 relies on spring 36 toward sinciput, and spring force is by pressure regulating screw 32 controls.Roller second 20 is installed in 22 times outsides of minor face at pipe bearing support 23 (as Fig. 1, shown in Figure 3), and upper and lower 26 times inboards, long limit have roller first 24 to cooperate with guide rail 25 by sliver 19,21 guiding, and so main weight is loaded, and operated steadily by sliver, guide rail.

One of main improvement design of the present utility model is that annular feed track arranged side by side is divided into heating road 4 and cooling duct 2 by dividing plate 3, cooling duct 2 is cooling naturally not only, and cooling blower 29 is installed, bellows are forced cooling, holder mould 16 waste heats such as grade on the pipe bearing support are eliminated, avoid the heat savings, guarantee plastic containers oral area quality.Infrared ray heating tube 14 is positioned on the reflecting plate 13 that stainless steel or other material make, and preceding have a filter band 15.The plastic containers difference, pipe to add heat request also different, therefore height and the width that heats regulated with mobile reflecting plate 13 and infrared ray heating tube 14.Reflecting plate 13 is connected below the swivel nut 11, the positive and negative screw rod 10 of double end is arranged in the swivel nut, swivel nut and 9 movable connections of cross bar, after screw rod 10 rotated, two swivel nuts 11 drove reflecting plates 13 and move in or out simultaneously, the adjusting width of heating.But cross bar 9 is subjected to the traction of height adjusting screw(rod) 8 again, when height adjusting screw(rod) 8 rotates, makes cross bar 9 upper and lower moving, and sliding in the chute 12 of support 7 in cross bar 9 two, is used to regulate the height of heater.Control cabinet 5 can be positioned on above the frame 1, is positioned at air-introduced machine 6 fronts, and the temperature in the heating road 4 is regulated by air-introduced machine 6, and the power supply of infrared ray heating tube is being opened all the time.

Claims

1, the infrared preheater of plastic pipe, by frame, power of installing in the frame and transmission device, the plastic pipe conveying mechanism that transmission device drives, and heater etc. form, so-called plastic pipe conveying mechanism is a driving wheel, driven pulley and chain are formed annular feed track, the pipe bearing support is installed on chain, it is characterized in that annular feed track arranged side by side being divided into heating road (4) and cooling duct (2) by dividing plate (3), infrared ray heating tube (14) is installed in both sides in heating road (4), air-introduced machine (6) is installed in the top in heating road (4), in the below of cooling duct (2) fan (29) and cool wind box is installed.

2, the infrared preheater of plastic pipe as claimed in claim 1, it is characterized in that upward installation gear (17) of pipe bearing support (23), holder mould (16) is installed on gear (17) axle, gear (17) matches with tooth bar (18) in the frame (1), and the long limit (26) of pipe bearing support (23) is connected with the chain (27) of conveying mechanism.

3, the infrared preheater of plastic pipe as claimed in claim 2 is characterized in that upward installation 3 gears (17) of each pipe bearing support (23), and 3 gears intermesh, and holder mould (16) is installed on every rooted tooth wheel shaft.

4, the infrared preheater of plastic pipe as claimed in claim 3, it is characterized in that the gear (17) on the pipe bearing support (23) matches with rackwork, so-called rackwork is the holder (33) that is positioned in the frame, an adjustment hole is arranged in the holder, positioning bar (34), spring (36) and pressure regulating screw (32) are installed in the adjustment hole, and the head of positioning bar (34) matches with gear (17).

5, the infrared preheater of plastic pipe as claimed in claim 1, roller first (24) is installed on the long limit (26) that it is characterized in that pipe bearing support (23) down, guide rail (25) is arranged in frame (1), roller first (24) matches with guide rail (25), roller second (20) is installed in minor face (22) outside of pipe bearing support (23), the upper and lower of roller second has sliver (19,21) to constitute guide groove, and roller second is moved in guide groove.

6, the infrared preheater of plastic pipe as claimed in claim 1, it is characterized in that heater has governor motion, so-called governor motion is a mounting bracket (7) in the frame (1), height adjusting screw(rod) (8) is installed in the support, screw rod drives cross bar (9) and moves up and down, match with the chute (12) of support (7) in two of cross bar, cross bar (9) two swivel nuts of the second line of a couplet (11), positive and negative screw rod (10) is installed in the swivel nut, swivel nut links to each other with reflecting plate (13) down, infrared ray heating tube (14) is installed on the reflecting plate (13), and there is filter band (15) infrared ray heating tube (14) inboard.