CN104647729A - Extrusion forming device and manufacturing method of thermoplastic elastomer formed piece - Google Patents
Extrusion forming device and manufacturing method of thermoplastic elastomer formed piece Download PDFInfo
- Publication number
- CN104647729A CN104647729A CN201410443154.8A CN201410443154A CN104647729A CN 104647729 A CN104647729 A CN 104647729A CN 201410443154 A CN201410443154 A CN 201410443154A CN 104647729 A CN104647729 A CN 104647729A
- Authority
- CN
- China
- Prior art keywords
- thermoplastic elastomer
- tpe
- tank
- extrusion forming
- mouth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/905—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using wet calibration, i.e. in a quenching tank
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
- B29C48/912—Cooling of hollow articles of tubular films
- B29C48/913—Cooling of hollow articles of tubular films externally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
Abstract
The invention provides an extrusion forming device and a manufacturing method of a thermoplastic elastomer formed piece. The extrusion forming device can obtain higher size precision even using extrusion forming devices which are easy to deform because of friction. A shape adjuster (4) configured between an extruder (2) for heating and extruding a thermoplastic elastomer (10) and an extracting machine (3) of the thermoplastic elastomer (10) is provided with a water tank (40) filled with cooling water (W). A sidewall (42) dividing a water outlet tank (40) is provided with an inlet (45a) formed by a through hole allowing the thermoplastic elastomer (10) to enter the water tank (40), and an outlet (45b) formed by a through hole for discharging the thermoplastic elastomer (10) from the water tank (40). The caliber of the inlet(45a) is greater than the external diameter of the thermoplastic elastomer (10) which is extruded by the extruder (2) and is going to enter the inlet; a water level of the cooling water (W) is higher than upper ends of the inlet (45a) and the outlet (45b).
Description
Technical field
The present invention relates to the manufacture method of extrusion forming device and thermoplastic elastomer (TPE) products formed.
Background technology
In the past, in the paper advance mechanism of image processing system etc., use the paper feed roller and conveying roller that are made up of thermoplastic elastomer (TPE).In order in the correct moment, recording paper etc. is delivered to image forming part with correct speed, therefore higher precision is required to the roundness of such paper feed roller and conveying roller and internal diameter and outside dimension.
Paper feed roller and conveying roller, such as with the thermoplastic elastomer (TPE) of tubulose for mother metal.Generally, carrying out in shaping extrusion forming device to the thermoplastic elastomer (TPE) of tubulose, from extruder, side is equipped with the tank, extraction machine, cutting machine etc. of cooling successively towards downstream.
The heating of squeezed press and the synthetic resin material of melting, when by the mould (dies) of extruder outlet and plug (mandrel), be formed as the cross sectional shape of regulation and be roughly extruded continuously in the horizontal direction.From the tubular moulding thing of the high temperature that extruder is extruded, be extracted machine extract be disposed in the cooling water in the tank between extruder and extraction machine by time be cooled and harden.Then, the tubular moulding thing of sclerosis is cut off machine and cuts off, thus the paper feed roller obtained as finished product or conveying roller.
The tubular moulding thing passed through in tank, except hydraulic pressure, the tension force being also subject to the horizontal direction of extraction machine, the impact of gravity putting on vertical direction.If the increase of making a concerted effort of these power, then pipe is pressed partially, and the cross sectional shape producing pipe becomes the problem of flattening etc.
Therefore, in the extrusion forming device of tubular moulding thing requiring higher dimensional accuracy, the vacuum cooled tank that have employed sizing die (sizing die) is used.Shaping mould get everything ready regulation bore through hole and be arranged on the entrance of tank.By the pressure differential produced inside and outside tubular moulding thing, the through hole of pipe towards sizing die is pulled, utilize sizing die to carry out the appearance and size of limiter tube.
As the technology also using sizing die and vacuum cooled tank, such as, in following patent document 1, disclosing following extrusion process: in order to the appearance and size of tubular products formed being remained the value of expectation, utilizing the vavuum pump being fed control to adjust the air pressure in bosh.In this extrusion process, vacuum area is set in the inside of sizing die, by vacuum area negative pressure state and the outer surface of products formed and the through hole of sizing die are touched, make the smooth outer surface of products formed ground shaping.
The manufacture method of following TPI system tubular film is disclosed: in order to there is excellent dimensional accuracy, the TPI system tubular film film forming of thickness precision in following patent document 2, using makes inside become shaping sleeve and the bosh of decompression state by vavuum pump, supplies a small amount of water to the inner ring of shaping sleeve.
Patent document 1: Japan Patent No. 2731694 publication
Patent document 2: Japan Patent No. 3237715 publication
But, be such as suitable for the paper feed roller of TPU etc. and the thermoplastic elastic material of conveying roller, compared with the material used in the invention recorded with above-mentioned patent document 1,2, there is the tendency easily producing distortion because of the friction with sizing die.Therefore, when carrying out extruded to such thermoplastic elastic material, even if apply the technology of above-mentioned patent document 1,2 record, also cannot fully suppress by the distortion caused that rubs.Its result, produces article shaped and cannot pass through from sizing die and shapingly itself cannot carry out or namely allow to the new problems such as the shaping but size of tubular moulding thing can change.
Summary of the invention
The present invention is in view of actual conditions such are above made, even if main purpose is that providing a kind of uses the thermoplastic elastic material easily producing distortion because of friction, also can obtain the extrusion forming device of higher dimensional accuracy and the manufacture method of thermoplastic elastomer (TPE) products formed.
The present invention is a kind of extrusion forming device, carries out extruded to thermoplastic elastomer (TPE), and the feature of described extrusion forming device is to have: squeeze unit, and this squeeze unit heats thermoplastic elastomer (TPE) and it extruded from mould, extracting unit, this extracting unit extracts the described thermoplastic elastomer (TPE) extruded, and Adjusting Shape unit, this Adjusting Shape cell location is between described squeeze unit and described extracting unit, and the shape of the described thermoplastic elastomer (TPE) extruded is adjusted, described Adjusting Shape unit has the tank that cooled water is full of, described cooling water cools thermoplastic elastomer (TPE), be provided with at the sidewall marking off described tank: by the entrance formed for supplying thermoplastic elastomer (TPE) to enter into the through hole in described tank, with by the outlet for being formed from the through hole that described tank is discharged for described thermoplastic elastomer (TPE), the bore of at least described entrance is greater than the external diameter from being about to the thermoplastic elastomer (TPE) before entering described entrance after described squeeze unit is extruded, the water level of described cooling water is higher than the upper end of described entrance and described outlet.
In described extrusion forming device of the present invention, preferably, described tank has the first component being installed on described sidewall, and described entrance is formed at described first component.
In described extrusion forming device of the present invention, preferably, described mould is used for by described thermoplastic elastomer (TPE) with tubular extruded, and described tank has: the decompression tank in the normal pressure tank passed through at first for the thermoplastic elastomer (TPE) extruded from described squeeze unit and the downstream that is arranged on described normal pressure tank.
In described extrusion forming device of the present invention, preferably, described tank comprises the first partition wall described normal pressure tank and described decompression tank separated, described first partition wall be provided with formed by the through hole passed through for described thermoplastic elastomer (TPE) first pass through mouth, described first is greater than the external diameter from being about to the thermoplastic elastomer (TPE) before entering described entrance after described squeeze unit is extruded by the bore of mouth, the water level of described cooling water higher than described first by the upper end of mouth.
In described extrusion forming device of the present invention, preferably, described tank has the second component being installed on described first partition wall, and described first is formed in described second component by the degree of lip-rounding.
In described extrusion forming device of the present invention, preferably, described first is 0.5mm ~ 10mm by the length in the direction of extrusion of mouth.
In described extrusion forming device of the present invention, preferably, described decompression tank comprises: the first decompression tank, be arranged on second decompression tank in the downstream of described first decompression tank, and by the second partition wall that described first decompression tank and described second decompression tank are separated, described second partition wall be provided with formed by the through hole passed through for described thermoplastic elastomer (TPE) second pass through mouth, described second is greater than the external diameter from being about to the thermoplastic elastomer (TPE) before entering described entrance after described squeeze unit is extruded by the bore of mouth, the water level of described cooling water higher than described second by the upper end of mouth.
In described extrusion forming device of the present invention, preferably, the bore of described entrance is 1.04 times ~ 1.26 times from being about to the external diameter of the thermoplastic elastomer (TPE) before entering described entrance after described squeeze unit is extruded.
In described extrusion forming device of the present invention, preferably, described first is 1.08 times ~ 1.45 times of the fine finishining external diameter of described thermoplastic elastomer (TPE) by the bore and described second of mouth by the bore of mouth.
In described extrusion forming device of the present invention, preferably, described decompression tank is provided with position-limiting unit, and this position-limiting unit is to being limited by the upper-lower position of the described thermoplastic elastomer (TPE) in described decompression tank and/or right position in the horizontal direction.
In described extrusion forming device of the present invention, preferably, described position-limiting unit has: roller, and this roller rotates the position abutting with thermoplastic elastomer (TPE) and limit described thermoplastic elastomer (TPE); Rotating shaft, described roll shaft supporting is rotatable by this rotating shaft.
In described extrusion forming device of the present invention, preferably, at least the coat film for reducing the friction with described thermoplastic elastomer (TPE) is formed with on the surface of a described through hole.
In described extrusion forming device of the present invention, preferably, also have cutting unit, the thermoplastic elastomer (TPE) extracted by described extracting unit is cut to the length of regulation by this cutting unit.
In addition, the invention is characterized in, manufacture with the extrusion forming device described in technical scheme 13 products formed thermoplastic elastomer (TPE) of tubulose being cut into annulus.
For extrusion forming device of the present invention, the bore of the entrance be made up of the through hole of the sidewall being arranged at tank is greater than the external diameter from being about to the thermoplastic elastomer (TPE) before entering described entrance after squeeze unit is extruded, and therefore suppresses to produce between the thermoplastic elastomer (TPE) and entrance of described extruding to rub.Namely, the sidewall of tank is provided with the through hole that bore is greater than the external diameter of thermoplastic elastomer (TPE), replace the sizing die touched with the outer surface of thermoplastic elastomer (TPE) is installed in the sink, thermoplastic elastomer (TPE) can be suppressed thus to be out of shape because of friction, thus obtain excellent dimensional accuracy.
In addition, because the water level of cooling water is higher than the upper end of entrance and outlet, therefore prevent air from entering in tank by the moisture film between entrance and outlet and the cooling water between the thermoplastic elastomer (TPE) of this entrance and outlet.In addition, the lubrication of cooling water is utilized further to suppress in thermoplastic elastomer (TPE) and entrance and the friction that produces between exporting.
Accompanying drawing explanation
Fig. 1 is the sectional view of the embodiment that extrusion forming device of the present invention is shown.
Fig. 2 is the sectional view of the tank of Fig. 1.
Fig. 3 is the sectional view of the first normal pressure tank of Fig. 1.
Fig. 4 is the sectional view of first decompression tank of Fig. 1.
Fig. 5 is the stereogram of the structure of the locating part that Fig. 4 is shown.
Description of reference numerals: 1 ... extrusion forming device; 2 ... extruder (squeeze unit); 3 ... extraction machine (extracting unit); 4 ... Adjusting Shape machine (Adjusting Shape unit); 5 ... cutting machine (cutting unit); 10 ... thermoplastic elastomer (TPE); 25 ... mould; 40 ... tank; 42 ... sidewall; 45a ... entrance; 45b ... outlet; 46 ... first partition wall; 47 ... second partition wall; 61 ... first normal pressure tank; 62 ... first decompression tank; 63 ... second decompression tank; 71 ... first component; 72a ... first passes through mouth; 72 ... second component; 73a ... second passes through mouth; 83 ... locating part (position-limiting unit); 91 ... roller; 92 ... rotating shaft.
Detailed description of the invention
Below, based on accompanying drawing, an embodiment of the invention are described.
Fig. 1 is the sectional view of the extrusion forming device 1 of present embodiment.Extruded for thermoplastic elastomer (TPE) of extrusion forming device 1.
As shown in Figure 1, the extrusion forming device 1 of present embodiment possesses: extruder (squeeze unit) 2, extraction machine (extracting unit) 3, Adjusting Shape machine (Adjusting Shape unit) 4 and cutting machine (cutting unit) 5.
Extruder 2 is disposed in the most upstream of extrusion forming device 1, is heated by thermoplastic elastomer (TPE) 10 and extrudes.Extraction machine 3 extracts the thermoplastic elastomer (TPE) 10 extruded by extruder 2.Adjusting Shape machine 4 is disposed between extruder 2 and extraction machine 3, adjusts the shape of the thermoplastic elastomer (TPE) 3 extruded by extruder 2.The thermoplastic elastomer (TPE) 10 extracted by extraction machine 3 is cut to the length of regulation by cutting machine 5.
Extruder 2 such as has hopper 21, cylinder body 22, screw rod 23, plug 24 and mould 25.The ball material (pellet) 11 becoming the material of thermoplastic elastomer (TPE) 10 is put into hopper 21.Input ball material 11 supplies towards cylinder body 22 by hopper 21.Cylinder body 22 carries out heating to the ball material 11 supplied by hopper 21 makes its melting, thus generates the thermoplastic elastomer (TPE) 10 with mobility.Cylinder body 22 is provided with the heater (not shown) for heating ball material 11.Screw rod 23 is built in cylinder body 22, and the thermoplastic elastomer (TPE) 10 after heating and melting is expressed into the front of cylinder body 22 by this screw rod 23.
Plug 24 such as with screw rod 23 coaxially and arrange integratedly, and make the thermoplastic elastomer (TPE) 10 by screw rod 23 is extruded be formed as hollow.Mould 25 is arranged at the front end of cylinder body 22, for the formation of the profile of the thermoplastic elastomer (TPE) 10 extruded by screw rod 23.Utilize plug 24 and mould 25 and form the thermoplastic elastomer (TPE) 10 of tubulose, and this thermoplastic elastomer (TPE) 10 is extruded from the outlet of extruder 2.
Extraction machine 3 such as has: pair of rolls 31, and they contact with the thermoplastic elastomer (TPE) 10 extruded from extruder 2 and carry out drawing to thermoplastic elastomer (TPE) 10; And the roller drive division (not shown) of rotary actuation roller 31.The rotating speed of roller 31 is such as controlled so as to and the interlocks such as the rotating speed of screw rod 23.
Adjusting Shape machine 4 has the tank 40 be filled with the cooling water W that thermoplastic elastomer (TPE) 10 cools.Tank 40 is divided by the sidewall 42 of diapire 41, upstream side, the sidewall 43 in downstream and roof 44 and forms.The sidewall 42 of upstream side is provided with entrance 45a, and this entrance 45a is formed by the through hole for entering into the inside of tank 40 for the thermoplastic elastomer (TPE) 10 extruded from extruder 2.The sidewall 43 in downstream is provided with outlet 45b, this outlet 45b formed by the through hole for discharging from the inside of tank 40 for thermoplastic elastomer (TPE) 10.Tank 40 is such as divided into from the upstream side of the direction of extrusion of thermoplastic elastomer (TPE) 10 successively towards downstream: the first normal pressure tank 61, first decompression tank 62, second decompression tank 63 and the second normal pressure tank 64.
The tension force that the thermoplastic elastomer (TPE) 10 reason extraction machine 3 of the high temperature extruded from extruder 2 applies and being stretched, thus its external diameter reduces gradually.And then, be cooled at the thermoplastic elastomer (TPE) 10 during this period through tank 10 because of the heat exchange with cooling water W and shrink.Shortly after that, if the temperature of thermoplastic elastomer (TPE) 10 fully reduces, then the shape of thermoplastic elastomer (TPE) 10 becomes stable.
Cutting machine 5 such as has: the cutter 51 that the thermoplastic elastomer (TPE) 10 extracted by extraction machine 3 is cut off and along the vertical direction to cutter 51 carry out come and go drive cutter drives portion (not shown).The round trip cycle of cutter 51 be such as controlled as can with the interlocks such as the rotating speed of the roller 31 of extraction machine 3.Thus, the thermoplastic elastomer (TPE) 10 of tubulose is cut off by with the length of regulation.Pipe after cut-out such as be used for image processing system etc. paper advance mechanism paper feed roller 12 grade products formed and used.
Fig. 2 illustrates the structure of tank 40.Tank 40 has: the first normal pressure tank 61, first decompression tank 62, second decompression tank 63 and the second normal pressure tank 64.First normal pressure tank 61 is configured in the side, most upstream of tank 40, passes through at first to make the thermoplastic elastomer (TPE) 10 extruded from extruder 2 from this first normal pressure tank 61.By the thermoplastic elastomer (TPE) 10 after the first normal pressure tank 61 successively by the first decompression tank 62, second decompression tank 63 and the second normal pressure tank 64.
First normal pressure tank 61 and the first decompression tank 62 are separated by the first partition wall 46.The first partition wall 46 be provided with by the through hole passed through for thermoplastic elastomer (TPE) 10 formed first by mouth 72a.First decompression tank 62 and the second decompression tank 63 are separated by the second partition wall 47.The second partition wall 47 be provided with by the through hole passed through for thermoplastic elastomer (TPE) 10 formed second by mouth 73a.Second decompression tank 63 and the second normal pressure tank 64 are separated by the 3rd partition wall 48.The 3rd partition wall 48 be provided with by the through hole passed through for thermoplastic elastomer (TPE) 10 formed the 3rd by mouth 74a.
The top of the first normal pressure tank 61 and the top of the second normal pressure tank 64 are to atmosphere opening.Thus, the pressure of the first normal pressure tank 61 and the second normal pressure tank 64 remains normal pressure.On the other hand, the top of the first decompression tank 62 and the top of the second decompression tank 63 are closed by roof 44, and are extracted the air of the inside of the first decompression tank 62 and the second decompression tank 63 by vavuum pump P.The pressure of the first decompression tank 62 and the second decompression tank 63 keeps substantial vacuum state lower than atmospheric pressure thus.
When thermoplastic elastomer (TPE) 10 passes through at the first decompression tank 62 and the second decompression tank 63, produce pressure differential in the inner and post-decompression pipe outside of the pipe of normal pressure.Thermoplastic elastomer (TPE) 10 is expanded towards radial outside equably because of this pressure differential, and keeps the shape of thermoplastic elastomer (TPE) 10.
To the method that the first decompression tank 62 and the second decompression tank 63 reduce pressure, be not particularly limited.Such as can adopt the common decompression methods such as the method using Venturi tube.
Length in the direction of extrusion of each tank can suitably set.Can be such as be less than the length in the direction of extrusion of the first decompression tank 62 by the length setting in the direction of extrusion of the first normal pressure tank 61.Volume in the direction of extrusion of each tank in addition also can suitably set.Can be such as the volume being less than the first decompression tank 62 by the volume settings of the first normal pressure tank 61.The volume of the first decompression tank 62 is equal with the volume of the second decompression tank 63.The volume settings of the second normal pressure tank 64 is the volume being greater than the second decompression tank 63.
Supply tank T is connected to the first normal pressure tank 61 and the second normal pressure tank 64, utilizes the adjustment outputs such as flow rate regulating valve (not shown), to obtain the water level of expection in each tank.For the first decompression tank 62 and the second decompression tank 63, also identical with above-mentioned situation.
Fig. 3 illustrates the structure of the first normal pressure tank 61 and periphery thereof.First normal pressure tank 61 is divided by sidewall 42, first partition wall 46 and cartridge 66 etc. and forms.At the junction surface of sidewall 42 and cartridge 66 and the liner 67 being provided with ring-type at the first partition wall 46 and the junction surface of cartridge 66.Be formed with opening 66a on the top of cartridge 66, the top of cartridge 66 is to atmosphere opening.The below of sidewall 42 and cartridge 66 is provided with water-accepting part 49.
There is on the top of sidewall 42 and bottom a pair feed water inlet 42a.At each feed water inlet 42a, water supply pipe joint 42b is installed.Each water supply pipe joint 42b is connected with supply tank T, and feed water inlet 42a flow into the first normal pressure tank 61 for making the cooling water supplied from supply tank T.The cooling water W flowing into the first normal pressure tank 61, after cooling the thermoplastic elastomer (TPE) 10 by the first normal pressure tank 61, becomes drop-shaped cooling water W1 from entrance 45a and opening 66a spilling and falls, and lodge in water-accepting part 49.
By adjusting the flow rate regulating valve on the pipe arrangement path be arranged between supply tank T and water supply pipe joint 42b, thus the water level of the cooling water W in the first normal pressure tank 61 is remained the upper end higher than entrance 45a.Therefore be cooled through the whole surface of the thermoplastic elastomer (TPE) 10 of entrance 45a water W moisture film cover.
Be formed with discharge outlet 49a in the bottom of water-accepting part 49, discharge outlet 49a is provided with drain connection 49b.The outside of cooling water W2 via discharge outlet 49a and drain connection 49b towards water-accepting part 49 being accumulated in water-accepting part 49 is discharged.The cooling water W2 that can be configured to discharge via drain connection 49b circulates to supply tank T.The second normal pressure tank 64 shown in Fig. 2, also utilizes structure same as described above to keep water level.
Be formed with the opening 42c for inserting for thermoplastic elastomer (TPE) 10 at sidewall 42, the first component 71 of tabular is installed at opening 42c.The entrance 45a of tank 40 is to be formed at first component 71 by mode through for first component 71.The bore of entrance 45a is set smaller than the bore of opening 42c and the external diameter be greater than from being about to the thermoplastic elastomer (TPE) 10 entered before entrance 45a after extruder 2 is extruded.
When the bore D1 of entrance 45a is be about to enter the thermoplastic elastomer (TPE) 10 before entrance 45a outer diameter D less than 0, same with using the prior art of sizing die, the friction produced between thermoplastic elastomer (TPE) 10 and entrance 45a increases, thus impacts the precision of the finishing size of thermoplastic elastomer (TPE) 10.On the other hand, when the bore D1 of entrance 45a is excessive, cooling water W1 flows out in a large number from entrance 45a, thus is difficult to the water level of maintenance first normal pressure tank 61.According to such viewpoint, the bore D1 of entrance 45a is preferably 1.04 times ~ 1.26 times from being about to the outer diameter D 0 of the thermoplastic elastomer (TPE) 10 entered before entrance 45a after extruder 2 is extruded.
For outlet 45b bore also as described above, but to reduce because of the heat exchange with the cooling water W in tank 40 due to the temperature of thermoplastic elastomer (TPE) 10 entering into outlet 45b, therefore the bore of outlet 45b can be set smaller than the bore D1 of entrance 45a.
Entrance 45a be arranged in the through hole of tank 40, through hole that thermoplastic elastomer (TPE) 10 passes through at first, pass through from entrance 45a extruding the thermoplastic elastomer (TPE) 10 that shape under high temperature is in the near future in an unsure state.Therefore in order to suppress the distortion of thermoplastic elastomer (TPE) 10 to improve dimensional accuracy, suppress the friction that produces between thermoplastic elastomer (TPE) 10 and entrance 45a comparatively effective.
In the present embodiment, be formed with the length in the direction of extrusion of the first component 71 of entrance 45a, can be set as being equal to or less than and be described laterly formed with first by the length in the direction of extrusion of the second component 72 of mouth 72a.Thus, length (being equivalent to the thickness of the first component 71 of tabular) in the direction of extrusion of entrance 45a is less than first by the length (being equivalent to the length of the second component 72 of tubular) in the direction of extrusion of mouth 72a, the friction of thermoplastic elastomer (TPE) 10 at the through hole place passed through at first can be reduced, thus the precision of the extruding size of thermoplastic elastomer (TPE) 10 can be improved further.
First decompression tank 62 is formed by divisions such as being installed on the plate-shaped member 46a of the first partition wall 46, the plate-shaped member 47b being installed on the second partition wall 47, diapire 41 and roof 44.Plate-shaped member 46a and plate-shaped member 47a engages with the first partition wall 46 and the second partition wall 47 by screw etc., is provided with the liner 75 of sheet on plate-shaped member 46a and the composition surface of the first partition wall 46 and the composition surface of plate-shaped member 47a and the second partition wall 47.
Be formed with the opening 46b for inserting for thermoplastic elastomer (TPE) 10 at the first partition wall 46, the second component 72 of tubular is installed at opening 46b.For thermoplastic elastomer (TPE) 10 is guided from the first normal pressure tank 61 towards the first decompression tank 62 first by mouth 72a, in the axial direction mode through for second component 72 is formed at second component 72.Preferably, first is less than the bore of opening 46b and the outer diameter D 0 be greater than from being about to the thermoplastic elastomer (TPE) 10 before entering described entrance after extruder 2 is extruded by the bore D2 of mouth 72a.Above-mentioned outer diameter D 0 is less than by the external diameter of the thermoplastic elastomer (TPE) 10 before mouth 72a owing to being about to enter first, even if therefore when above-mentioned bore D2 is less than outer diameter D 0, be about to enter first by the external diameter before mouth 72a if above-mentioned bore D2 is greater than, then reduction by first is by the friction at mouth 72a place.
When first by the bore D2 of mouth 72a be enter first by below the external diameter of the thermoplastic elastomer (TPE) 10 of mouth 72a, the friction produced between thermoplastic elastomer (TPE) 10 and first is by mouth 72a increases, thus impacts the precision of the extruding size of thermoplastic elastomer (TPE) 10.On the other hand, when first is excessive by the bore D2 of mouth 72a, cooling water W1 is flowed out from first in large quantities by mouth 72a, thus is difficult to the water level of maintenance first normal pressure tank 61.According to such viewpoint, first is preferably 1.08 times ~ 1.45 times of the fine finishining external diameter of thermoplastic elastomer (TPE) 10 by the bore D2 of mouth 72a.Wherein, finishing size or fine finishining external diameter are size as the thermoplastic elastomer (TPE) 10 after fine finishining of products formed or external diameter.
Because the hydraulic pressure in the first decompression tank 62 is lower than the hydraulic pressure in the first normal pressure tank 61, be therefore full of a part of the cooling water W of the first normal pressure tank 61, flow into the first decompression tank 62 from the second component 72 being arranged at the first partition wall 46.Now, the water level of the first normal pressure tank 61 remains higher than first by the upper end of mouth 72a, with make air not by first by mouth 72a.On the other hand, because the first decompression tank 62 is reduced pressure by vavuum pump P, therefore the water level of the first decompression tank 62 is higher than the water level of the first normal pressure tank 61.
Second decompression tank 63 has the structure equal with the first decompression tank 62.That is, the second decompression tank 63 is divided by the plate-shaped member 47b being installed on the second partition wall 47, plate-shaped member (not shown), diapire 41 and the roof 44 etc. that are installed on the 3rd partition wall 48 (with reference to Fig. 2) and forms.Plate-shaped member 47b engages with the second partition wall 47 by screw etc., is provided with the liner 75 of sheet on the composition surface of plate-shaped member 47b and the second partition wall 47.
Be formed with the opening 47c for inserting for thermoplastic elastomer (TPE) 10 at the second partition wall 47, the 3rd parts 73 of tubular are installed at opening 47c.For thermoplastic elastomer (TPE) 10 is guided from the first decompression tank 62 towards the second decompression tank 63 second by mouth 73a in the axial direction mode through for the 3rd parts 73 is formed at the 3rd parts 73.Preferably, second is less than the bore of opening 47c and the external diameter be greater than from being about to the thermoplastic elastomer (TPE) 10 before entering described entrance after extruder 2 is extruded by the bore D3 of mouth 73a.Above-mentioned outer diameter D 0 is less than by the external diameter of the thermoplastic elastomer (TPE) 10 before mouth 73a owing to being about to enter second, even if therefore when above-mentioned bore D3 is less than outer diameter D 0, be about to enter second by the external diameter before mouth 73a if above-mentioned bore D3 is greater than, then reduction by second is by the friction at mouth 73a place.In addition, second is same by the bore D2 of mouth 72a with first by the bore D3 of mouth 73a, is preferably 1.08 times ~ 1.45 times of the fine finishining external diameter of thermoplastic elastomer (TPE) 10.The bore D4 of mouth 74a is passed through also as described above for the 3rd.
Because the hydraulic pressure in the second decompression tank 63 is lower than the hydraulic pressure in the second normal pressure tank 64, therefore, the part being full of the cooling water W of the second normal pressure tank 64 flow into the second decompression tank 63 from the be arranged at the 3rd partition wall 48 the 4th by mouth 74a (with reference to Fig. 2).Now, the water level of the second normal pressure tank 64 remains higher than the 4th by the upper end of mouth 74a, with make air not by the 4th by mouth 74a.On the other hand, because the second decompression tank 63 is reduced pressure by vavuum pump P, therefore the water level of the second decompression tank 63 is higher than the water level of the second normal pressure tank 64.
The entrance 45a formed by through hole, first by mouth 72a, second by mouth 73a, the 3rd by mouth 74a and outlet 45b, when thermoplastic elastomer (TPE) 10 passes through from them, in order to reduce produced friction, their direction of extrusion along thermoplastic elastomer (TPE) 10 is configured on straight line.
The thermoplastic elastomer (TPE) 10 passed through in tank 40 is sometimes subject to the impact of the flowing of the cooling water W be supplied in tank 40 and produces faint vibration.Even if therefore entrance 45a, first is disposed in straight line on by mouth 74a and outlet 45a along the direction of extrusion of thermoplastic elastomer (TPE) 10 by mouth 73a, the 3rd by mouth 72a, second, thermoplastic elastomer (TPE) 10 also likely with the surface contact of through hole.Therefore, preferably, at least the coat film for reducing the friction with thermoplastic elastomer (TPE) 10 is formed with on the surface of any one through hole.
Fig. 4 illustrates the structure of the first decompression tank 62 with the cross section of the direction of extrusion perpendicular to thermoplastic elastomer (TPE) 10.Because the structure of the second decompression tank 63 is also equal with the structure of the first decompression tank 62, therefore, the first decompression tank 62 is described.First decompression tank 62 has: square cartridge 81, the chassis 82 supporting cartridge 81, the locating part (position-limiting unit) 83 etc. limited the position of the thermoplastic elastomer (TPE) 10 passed through in the first decompression tank 62 along general horizontal direction.
Sidewall 84a, 84b of the diapire 41 of the first decompression tank 62, roof 44 and left and right is made up of cartridge 81.Roof 44 being provided with the opening 44a for being inserted into by locating part 83 in first decompression tank 62, being provided with the opening 84c of operation for carrying out bottom locating part 83 being fixed on the first decompression tank 62 etc. at sidewall 84a.Gate (hatch) 85a and gate 85b is separately installed with at opening 44a and opening 84c.In order to ensure air-tightness and the watertightness of the first decompression tank 62, be respectively arranged with liner 85c and liner 85d at the periphery of opening 44a and the periphery of opening 84c.
Be formed with feed water inlet 41a at the diapire 41 of the first decompression tank 62, be formed with water supply pipe joint 87a at feed water inlet 41a.Water supply pipe joint 87a is connected with supply tank T, and feed water inlet 41a makes the cooling water W supplied from supply tank T flow into the first decompression tank 62.
Be formed with discharge outlet 84d in the bottom of the sidewall 84b of the first decompression tank 62, discharge outlet 84d is provided with drain connection 87b.Flow into the cooling water W of the first decompression tank 62, after being cooled by the thermoplastic elastomer (TPE) 10 by the first decompression tank 62, be discharged to the outside of the first decompression tank 62 via discharge outlet 84d and drain connection 87b.Flow rate regulating valve on the pipe arrangement path be arranged between supply tank T and water supply pipe joint 87a is adjusted, thus the water level of the cooling water W in the first decompression tank 62 is remained higher than first by the upper end of mouth 72a (with reference to Fig. 3).The cooling water W that can be configured to discharge via drain connection 87b circulates to supply tank T.
Be formed with exhaust outlet 84e on the top of the sidewall 84b of the first decompression tank 62, exhaust outlet 84e is provided with exhaust fitting 87c.Exhaust fitting 87c is connected with vavuum pump P, and the air of the upper space of the first decompression tank 62 is extracted by vavuum pump P, thus keeps the decompression state of the first decompression tank 62.
The first decompression tank 62 that cooled water W is full of such as is supported by chassis 82.Chassis 82 waited by welding and with the diapire 41 of the first decompression tank 62 that is the lower bond of cartridge 81.The bottom of chassis 82 is provided with track 82a and wheel 82b etc.Chassis 82 is configured to by track 82a and wheel 82b etc. and can moves along the fore-and-aft direction parallel with the direction of extrusion of thermoplastic elastomer (TPE) 10 and the left and right directions vertical with this fore-and-aft direction.By making chassis 82 move along above-mentioned direction, thus adjustment tank 40 is relative to the position of extruder 2.
Locating part 83 has: roller 91, rotating shaft 92 and support 93, and this locating part 83 is to being limited by the upper-lower position of the thermoplastic elastomer (TPE) 10 in the first decompression tank 62 and right position in the horizontal direction.
Roller 91 rotates while abut with the upper surface of thermoplastic elastomer (TPE) 10, limits the upper-lower position of thermoplastic elastomer (TPE) 10.Roller 91 has guide portion 91a and pair of flanges portion 91b, roller 91 is formed as bobbin (bobbin) shape, wherein, guide portion 91a abuts with the upper surface of thermoplastic elastomer (TPE) 10 and guides thermoplastic elastomer (TPE) 10, and pair of flanges portion 91b is formed in the two ends of guide portion 91a.The external diameter of roller 91 two ends from the equator of roller 91 towards axis increase gradually, can rotate the upper-lower position and right position that limit thermoplastic elastomer (TPE) 10 to make roller 91.The cross section of roller 91 is formed as mild arc-shaped from guide portion 91a to flange part 91b thus.As shown in Figure 4, on the cross section comprising rotating shaft 92, the radius of curvature from guide portion 91a to flange part 91b is set as that the half of the external diameter than the thermoplastic elastomer (TPE) 10 through locating part 83 is bigger.Be assembled with pair of bearings 91c at roller 91, can rotate swimmingly around rotating shaft 92 to make roller 91.
Fig. 5 illustrates the position relationship of locating part 83 in the structure of locating part 83 and the first decompression tank 62 and the first partition wall 46 and the second partition wall 47.The supporting of roller 91 axle is rotatable by rotating shaft 92.Rotating shaft 92 is fixed in support 93 by screw 92 etc.The through hole 93a for inserting for rotating shaft 92 is formed at support 93.
Through hole 93a is made up of longer elongated hole in the short transverse of above-below direction, i.e. roller 91.As shown in double dot dash line in Fig. 4, utilize the through hole 93a of this shape can adjust the height of height, the i.e. roller 91 of rotating shaft 92.
In Figure 5, the second component 75 of tabular replaces the second component 72 (with reference to Fig. 3) of tubular and is installed on the first partition wall 46.Similarly, the 3rd parts 76 of tabular are installed on the second partition wall 47.Be formed first by mouth 72a at second component 75, be formed with second by identical with above-mentioned situation in mouth 73a at the 3rd parts 76.
Owing to producing pressure differential between the first normal pressure tank 61 and the first decompression tank 62, the length therefore in the direction of extrusion of second component 72,75 is less than 0.5mm, the intensity of second component 72,75 is likely not enough.On the other hand, the thermoplastic elastomer (TPE) 10 passed through in tank 40 in the above described manner, be subject to the impact of the flowing of the cooling water W be supplied in the second tank 40 and produce faint vibration, therefore the length in the direction of extrusion of second component 72,75 is more than 10mm, the friction produced between thermoplastic elastomer (TPE) 10 and first is by mouth 72a increases, and impacts sometimes to the precision of the extruding size of thermoplastic elastomer (TPE) 10.According to such viewpoint, compared with the second component 72 of the tubular shown in Fig. 3, the second component 75 of the tabular more preferably shown in Fig. 5, and the length in the direction of extrusion of second component 75 is preferably 0.5mm ~ 10mm.
When adopting proportion to be less than thermoplastic elastomer (TPE) 10 of the proportion of the cooling water W being full of the first decompression tank 62, the upper surface that there is thermoplastic elastomer (TPE) 10 because of the impact of buoyancy easily with first by the upper surface of mouth 72a and the second tendency contacted by the upper surface of mouth 73a.
But in the present embodiment, the upper surface of inner side lower surface to thermoplastic elastomer (TPE) 10 of the guide portion 91a of roller 91 guides, and limits its upper-lower position and right position thus.Now, as shown in Figure 5, configured point-blank by the upper end of mouth 73a by the inner side lower surface and second of the upper end of mouth 72a, the guide portion 91a of roller 91 due to first, therefore thermoplastic elastomer (TPE) 10 is not wriggled but is passed through as the crow flies in the first decompression tank 62, thus effectively avoids thermoplastic elastomer (TPE) 10 and first by the contact of mouth 72a and second by mouth 73a.Thermoplastic elastomer (TPE) 10 and first can be reduced in thus by the friction of mouth 72a and second by producing between mouth 73a.
On the other hand, when adopting proportion to be less than thermoplastic elastomer (TPE) 10 of the proportion of cooling water W, as long as the height of adjustment roller 91 is with the lower surface enabling the inside upper surface of guide portion 91a guide thermoplastic elastomer (TPE) 10.
To the roller 91 that thermoplastic elastomer (TPE) 10 guides, supported as rotatable by rotating shaft 92 axle via bearing 91c, therefore roller 91 rotates with passing through of thermoplastic elastomer (TPE) 10, and does not hinder the movement of thermoplastic elastomer (TPE) 10.Therefore, between the guide portion 91a and thermoplastic elastomer (TPE) 10 of roller 91, produce friction hardly, thus when thermoplastic elastomer (TPE) 10 is by locating part 83, can avoid producing distortion.
According to the extrusion forming device 1 of present embodiment with as above structure, the bore D1 of the entrance 45a formed by the through hole of the sidewall 42 being arranged at tank 40 is greater than the outer diameter D 0 from being about to the thermoplastic elastomer (TPE) 10 before entering described entrance after extruder 2 is extruded, therefore, it is possible to suppress to produce between thermoplastic elastomer (TPE) 10 and entrance 45a to rub.Namely, at the sidewall 42 of tank 40, the through hole that bore D1 is greater than the outer diameter D 0 of thermoplastic elastomer (TPE) 10 is set, replace, at tank 40, the sizing die touched with the outer surface of thermoplastic elastomer (TPE) 10 is installed, thermoplastic elastomer (TPE) 10 can be suppressed thus to be out of shape because of friction, thus excellent dimensional accuracy can be obtained.
In addition, because the water level of cooling water W is higher than entrance 45a and the upper end exporting 45b, therefore utilize between entrance 45 and outlet 45b and from this entrance 45 and the moisture film exporting the cooling water W between thermoplastic elastomer (TPE) 10 that 45b passes through, prevent air from entering in tank 40.And then, utilize the lubrication of cooling water W, further suppress at thermoplastic elastomer (TPE) 10 and entrance 45a and export the friction produced between 45b.
Because entrance 45a is formed at first component 71, use therefore, it is possible to easily different to the bore D1 of entrance 45a, length equal-specification first components 71 carries out differentiation.By suitably changing such first component 71, thus the entrance 45a of optimum specifications can be used according to the size of thermoplastic elastomer (TPE) 10 and material, therefore, it is possible to improve the dimensional accuracy of thermoplastic elastomer (TPE) 10.
Because tank 40 has the first normal pressure tank 61 passed through at first for the thermoplastic elastomer (TPE) 10 extruded from extruder 2, therefore, it is possible to prevent air from flowing into the first decompression tank 62, thus the decompression state of the first decompression tank 62 can be kept.Further can improve the dimensional accuracy of thermoplastic elastomer (TPE) 10 thus.
The hydraulic pressure of the first normal pressure tank 61 passed through at first due to the thermoplastic elastomer (TPE) 10 extruded from extruder 2 is high, therefore, is difficult under normal circumstances suitably carry out Adjusting Shape.But in the present embodiment, the volume due to the first normal pressure tank 61 is less than the volume of the first decompression tank 62, therefore the Adjusting Shape effect of the first normal pressure tank 61 is little, can obtain larger Adjusting Shape effect after the first decompression tank 62 that hydraulic pressure is low.Further can improve the dimensional accuracy of thermoplastic elastomer (TPE) 10 thus.
Be formed at second component 72 due to first by mouth 72a, use therefore, it is possible to easily carry out differentiation to first by the second component 72 that the bore D2 of mouth 72a, length equal-specification are different.By suitably changing such second component 72, second of optimum specifications can be used by mouth 72a according to the size of thermoplastic elastomer (TPE) 10 and material, thus further can improve the dimensional accuracy of thermoplastic elastomer (TPE) 10.For second by mouth 73a and the 3rd by mouth 74a too.
Although explain extrusion forming device of the present invention above, the present invention is not limited to above-mentioned detailed description of the invention, but can change to various mode to implement.
Embodiment
Utilize the extrusion forming device being formed with the basic structure of Fig. 1, the specification based on table 1 has manufactured experimently thermoplastic elastomer (TPE), and tests its dimensional accuracy.In the embodiment 1 to 6 and comparative example 1 to 3 of table 1, by thermoplastic polyurethane system resin ball material Elastollan (trade (brand) name) C60A10WN of society (BASF Japan) at 80 DEG C after dry 3 hours, put into the single shaft extruder that screw diameter is φ 50mm, carried out shaping under the melt temperature of 160 DEG C.In embodiment 7, be thermoplastic polyurethane system resin (polyester elastomer (Hytrel) 4047 of DUPONT-TORAY CO., LTD.) by material altering, with therewith, carry out shaping under the melt temperature of 180 DEG C, other specifications are identical with embodiment 6.
In comparative example 1, entrance, first is set to 20mm by the bore of mouth by mouth to the 3rd and tests.In comparative example 2, entrance, first is set to 33mm by the bore of mouth by mouth to the 3rd and tests.In comparative example 3, entrance, first is set to 40mm by the bore of mouth by mouth to the 3rd and tests.Method of testing is as follows.
< is about to the diameter > before entering entrance
Use the laser size measuring machine (LS-3032) of Keyemce (keyence) Inc., the external diameter being about to the thermoplastic elastomer (TPE) before entering entrance is measured.
< fine finishining external diameter >
Measure with the above-mentioned laser ruler cun external diameter of measuring machine to the fine finishining finished product of thermoplastic elastomer (TPE).
< dimensional accuracy >
Use the cylinder cone gauge (TPG-710C) of Nigata Jing Ji Inc., the internal diameter of the fine finishining finished product of the thermoplastic elastomer (TPE) after extruded is measured.Continuing, in the continuously shaped process of two hours, to sample with the thermoplastic elastomer (TPE) of the interval of 4 minutes to 30 places.Be evaluated as: if the standard deviation of internal diameter of sampling sample is less than 0.3, be evaluated as ◎, if more than 0.3 and be less than 0.5 and be evaluated as zero, if more than 0.5 or cannot be shaping, be evaluated as ×.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Comparative example 1 | |
| Melt temperature (DEG C) | 160 | 160 | 160 | 160 | 160 | 160 | 180 | 160 |
| Mould internal diameter (mm) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Diameter of mandrel (mm) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Inlet calibre D1 (mm) | 27 | 24 | 29 | 27 | 27 | 27 | 27 | 20 |
| First by the bore D2 (mm) of mouth | 25 | 21.5 | 26.9 | 25 | 25 | 25 | 25 | 20 |
| Second by the bore D3 (mm) of mouth | 25 | 21.5 | 26.9 | 25 | 25 | 25 | 25 | 20 |
| 3rd by the bore D4 (mm) of mouth | 25 | 21.5 | 26.9 | 25 | 25 | 25 | 25 | 20 |
| The thickness (mm) of first component | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| The thickness (mm) of second component | 50 | 50 | 50 | 50 | 10 | 5 | 5 | 50 |
| The thickness (mm) of the 3rd parts | 50 | 50 | 50 | 50 | 10 | 5 | 5 | 50 |
| The thickness (mm) of the 4th parts | 50 | 50 | 50 | 50 | 10 | 5 | 5 | 50 |
| Through hole surface coating film | Nothing | Nothing | Nothing | Have | Nothing | Nothing | Nothing | Nothing |
| Vacuum (kPa) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Namely the diameter D0 (mm) nearly before entrance | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| D1/D0 | 1.17 | 1.04 | 1.26 | 1.17 | 1.17 | 1.17 | 1.17 | 0.87 |
| D2/D0 | 1.09 | 0.93 | 1.17 | 1.09 | 1.09 | 1.09 | 1.09 | 0.87 |
| D3/D0 | 1.09 | 0.93 | 1.17 | 1.09 | 1.09 | 1.09 | 1.09 | 0.87 |
| D4/D0 | 1.09 | 0.93 | 1.17 | 1109 | 1.09 | 1.09 | 1.09 | 0.87 |
| Fine finishining outer diameter D (mm) | 20 | 20 | 20 | 20 | 20 | 20 | 20 | Cannot be shaping |
| D1/D | 1.35 | 1.20 | 1.45 | 1.35 | 1.35 | 1.35 | 1.35 | Cannot be shaping |
| D2/D | 1.25 | 1.08 | 1.35 | 1.25 | 1.25 | 1.25 | 1.25 | Cannot be shaping |
| D3/D | 1.25 | 1.08 | 1.35 | 1.25 | 1.25 | 1.25 | 1.25 | Cannot be shaping |
| D4/D | 1.25 | 1.08 | 1.35 | 1.25 | 1.25 | 1.25 | 1.25 | Cannot be shaping |
| Dimensional accuracy is evaluated | ○ | ○ | ○ | ◎ | ◎ | ◎ | ◎ | × |
Can clearly confirm according to table 1: compared with comparative example, the extrusion forming device of embodiment is of value to the dimensional accuracy improving fine finishining finished product.
Claims (14)
1. an extrusion forming device, carries out extruded to thermoplastic elastomer (TPE), and the feature of described extrusion forming device is to have:
Squeeze unit, this squeeze unit heats thermoplastic elastomer (TPE) and it is extruded from mould;
Extracting unit, this extracting unit extracts the described thermoplastic elastomer (TPE) extruded; And
Adjusting Shape unit, this Adjusting Shape cell location between described squeeze unit and described extracting unit, and adjusts the shape of the described thermoplastic elastomer (TPE) extruded,
Described Adjusting Shape unit has the tank that cooled water is full of, and described cooling water cools thermoplastic elastomer (TPE),
Be provided with at the sidewall marking off described tank: by for entering into entrance that the through hole in described tank formed for thermoplastic elastomer (TPE) and by the outlet formed from the through hole that described tank is discharged for the described thermoplastic elastomer (TPE) of confession,
The bore of at least described entrance is greater than the external diameter from being about to the thermoplastic elastomer (TPE) before entering described entrance after described squeeze unit is extruded,
The water level of described cooling water is higher than the upper end of described entrance and described outlet.
2. extrusion forming device according to claim 1, is characterized in that,
Described tank has the first component being installed on described sidewall, and described entrance is formed at described first component.
3. extrusion forming device according to claim 1 and 2, is characterized in that,
Described mould is used for by described thermoplastic elastomer (TPE) with tubular extruded,
Described tank has: the decompression tank in the normal pressure tank passed through at first for the thermoplastic elastomer (TPE) extruded from described squeeze unit and the downstream that is arranged on described normal pressure tank.
4. extrusion forming device according to claim 3, is characterized in that,
Described tank comprises the first partition wall described normal pressure tank and described decompression tank separated,
Described first partition wall be provided with by the through hole passed through for described thermoplastic elastomer (TPE) formed first by mouth,
Described first is greater than the external diameter from being about to the thermoplastic elastomer (TPE) before entering described entrance after described squeeze unit is extruded by the bore of mouth,
The water level of described cooling water higher than described first by the upper end of mouth.
5. extrusion forming device according to claim 4, is characterized in that,
Described tank has the second component being installed on described first partition wall, and described first is formed in described second component by the degree of lip-rounding.
6. extrusion forming device according to claim 5, is characterized in that,
Described first is 0.5mm ~ 10mm by the length in the direction of extrusion of mouth.
7. the extrusion forming device according to any one of claim 4 to 6, is characterized in that,
Described decompression tank comprises: the first decompression tank, the second decompression tank being arranged on the downstream of described first decompression tank and the second partition wall described first decompression tank and described second decompression tank separated,
Described second partition wall be provided with by the through hole passed through for described thermoplastic elastomer (TPE) formed second by mouth,
Described second is greater than the external diameter from being about to the thermoplastic elastomer (TPE) before entering described entrance after described squeeze unit is extruded by the bore of mouth,
The water level of described cooling water higher than described second by the upper end of mouth.
8. extrusion forming device according to any one of claim 1 to 7, is characterized in that,
The bore of described entrance is 1.04 times ~ 1.26 times from being about to the external diameter of the thermoplastic elastomer (TPE) before entering described entrance after described squeeze unit is extruded.
9. extrusion forming device according to any one of claim 1 to 8, is characterized in that,
Described first is 1.08 times ~ 1.45 times of the fine finishining external diameter of described thermoplastic elastomer (TPE) by the bore and described second of mouth by the bore of mouth.
10. the extrusion forming device according to any one of claim 3 to 9, is characterized in that,
Described decompression tank is provided with position-limiting unit, and this position-limiting unit is to being limited by the upper-lower position of the described thermoplastic elastomer (TPE) in described decompression tank and/or right position in the horizontal direction.
11. extrusion forming devices according to claim 10, is characterized in that,
Described position-limiting unit has: roller, and this roller rotates the position abutting with thermoplastic elastomer (TPE) and limit described thermoplastic elastomer (TPE); Rotating shaft, described roll shaft supporting is rotatable by this rotating shaft.
12. extrusion forming devices according to any one of claim 1 to 11, is characterized in that,
At least be formed with the coat film for reducing the friction with described thermoplastic elastomer (TPE) on the surface of a described through hole.
13. extrusion forming devices according to any one of claim 1 to 12, is characterized in that,
Also have cutting unit, the thermoplastic elastomer (TPE) extracted by described extracting unit is cut to the length of regulation by this cutting unit.
The manufacture method of 14. 1 kinds of thermoplastic elastomer (TPE) products formeds, is characterized in that,
The products formed thermoplastic elastomer (TPE) of tubulose being cut into annulus is manufactured with extrusion forming device according to claim 13.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-238660 | 2013-11-19 | ||
| JP2013238660A JP5913263B2 (en) | 2013-11-19 | 2013-11-19 | Extrusion molding apparatus and thermoplastic elastomer molded product manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104647729A true CN104647729A (en) | 2015-05-27 |
Family
ID=53239599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410443154.8A Pending CN104647729A (en) | 2013-11-19 | 2014-09-02 | Extrusion forming device and manufacturing method of thermoplastic elastomer formed piece |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5913263B2 (en) |
| CN (1) | CN104647729A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114228200A (en) * | 2021-09-29 | 2022-03-25 | 箐谷生物科技(嘉兴)有限公司 | Efficient straw extrusion crystallization system and method |
| CN115612295A (en) * | 2022-10-24 | 2023-01-17 | 安徽威普达材料科技有限公司 | Halogen-free flame-retardant PA66 with strong heat resistance and warping resistance and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3893465A (en) * | 1974-04-22 | 1975-07-08 | Jess & Lowell Well Casing Co | Guide device for plastic tube extrusion |
| JPS54122363A (en) * | 1978-03-15 | 1979-09-21 | Sekisui Chem Co Ltd | Manufacture of resin tube having longitudinal hole in the wall |
| JPS5987131A (en) * | 1982-11-12 | 1984-05-19 | Mitsui Petrochem Ind Ltd | Method of molding pipe of polybutene-1 |
| US4840552A (en) * | 1987-06-22 | 1989-06-20 | Fujikura Ltd. | Apparatus for continuously producing heat-shrinkable crosslinked resin tube |
| GB2218030A (en) * | 1988-05-05 | 1989-11-08 | Speedex Engineering Limited | Controlling the vacuum of a tube vacuum calibrating tank |
| US5096634A (en) * | 1990-02-07 | 1992-03-17 | George Aristovoulos Petzetakis | Method of operating an apparatus for the production of biaxially stretched plastic tubes |
| JP2005074908A (en) * | 2003-09-02 | 2005-03-24 | Usui Kokusai Sangyo Kaisha Ltd | Device for manufacturing resin pipe having radial fin and its manufacturing method |
| JP2007290192A (en) * | 2006-04-24 | 2007-11-08 | Sekisui Chem Co Ltd | Manufacturing method of resin pipe |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5532641A (en) * | 1978-08-31 | 1980-03-07 | Nippon Ester Co Ltd | Mehtod of manufacturing polyester pipe |
| JPS6127232A (en) * | 1984-07-18 | 1986-02-06 | Mitsubishi Kasei Vinyl Co | Sizing apparatus |
| JPS6135928A (en) * | 1984-07-30 | 1986-02-20 | Mitsubishi Kasei Vinyl Co | Manufacture of thermoplastic resin pipe |
| JPS63295231A (en) * | 1987-05-27 | 1988-12-01 | Tatsuta Electric Wire & Cable Co Ltd | Extrusion molding device for cable with supporting wire |
-
2013
- 2013-11-19 JP JP2013238660A patent/JP5913263B2/en active Active
-
2014
- 2014-09-02 CN CN201410443154.8A patent/CN104647729A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3893465A (en) * | 1974-04-22 | 1975-07-08 | Jess & Lowell Well Casing Co | Guide device for plastic tube extrusion |
| JPS54122363A (en) * | 1978-03-15 | 1979-09-21 | Sekisui Chem Co Ltd | Manufacture of resin tube having longitudinal hole in the wall |
| JPS5987131A (en) * | 1982-11-12 | 1984-05-19 | Mitsui Petrochem Ind Ltd | Method of molding pipe of polybutene-1 |
| US4840552A (en) * | 1987-06-22 | 1989-06-20 | Fujikura Ltd. | Apparatus for continuously producing heat-shrinkable crosslinked resin tube |
| GB2218030A (en) * | 1988-05-05 | 1989-11-08 | Speedex Engineering Limited | Controlling the vacuum of a tube vacuum calibrating tank |
| US5096634A (en) * | 1990-02-07 | 1992-03-17 | George Aristovoulos Petzetakis | Method of operating an apparatus for the production of biaxially stretched plastic tubes |
| JP2005074908A (en) * | 2003-09-02 | 2005-03-24 | Usui Kokusai Sangyo Kaisha Ltd | Device for manufacturing resin pipe having radial fin and its manufacturing method |
| JP2007290192A (en) * | 2006-04-24 | 2007-11-08 | Sekisui Chem Co Ltd | Manufacturing method of resin pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5913263B2 (en) | 2016-04-27 |
| JP2015098120A (en) | 2015-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104624694B (en) | A kind of interior horizontal bar pressing method of cylindrical member | |
| CN102176987B (en) | Method of profiling a tube of given length | |
| SE406879B (en) | APPARATUS FOR FORMING AN ELASTOMER BAND | |
| CN107626766B (en) | A kind of rolling manufacturing method of special-shaped seamless steel pipe | |
| CN104647729A (en) | Extrusion forming device and manufacturing method of thermoplastic elastomer formed piece | |
| CN101712058A (en) | Forming preforms and parts therefrom | |
| CN113084053B (en) | Rolling extrusion composite near-net forming method for large inner contour abrupt cross-section ring piece | |
| KR20180102496A (en) | Long cartridge case | |
| CN110479927A (en) | Large thin-wall fork-shaped ring constrains radial-axial rolling manufacturing process | |
| CN102292205A (en) | Extrusion system comprising a back pressure controlling brake device | |
| CN210358582U (en) | Bearing extrusion die with multi-dimensional die cavity structure | |
| CN105856569A (en) | 3d printer | |
| JP2009045663A (en) | Apparatus and method for drawing metallic tube | |
| CN102712039A (en) | Casting unit for a die casting machine | |
| CN104014702B (en) | A kind of processing unit (plant) of uniform internal diameter hollow shaft | |
| CN108491588B (en) | Cold space envelope forming method for thrust roller bearing ring | |
| CN105855308A (en) | Head rolling and mold penetrating machine | |
| CN106079402A (en) | Inflation film manufacturing machine and plastic bag processing technique | |
| US3773456A (en) | Apparatus for the production of flaring portions of hollow bodies | |
| CN104607578A (en) | Roll forming method for stainless steel thick-wall ring forged piece | |
| CN102802823B (en) | Tube rolling plant | |
| CN101722198B (en) | Method for processing retaining speed of mandrel in retained mandrel continuous mill unit | |
| CN101160184A (en) | Manufacturing method of seamless steel pipe | |
| CN202052792U (en) | Roll type forming machine | |
| CN104540613B (en) | Method for machining functions parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150527 |