CN1079723C - Hot-press moulding technique for thermoplastic products and hot-press moulding equipment thereof - Google Patents
Hot-press moulding technique for thermoplastic products and hot-press moulding equipment thereof Download PDFInfo
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- CN1079723C CN1079723C CN97107015A CN97107015A CN1079723C CN 1079723 C CN1079723 C CN 1079723C CN 97107015 A CN97107015 A CN 97107015A CN 97107015 A CN97107015 A CN 97107015A CN 1079723 C CN1079723 C CN 1079723C
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Abstract
The present invention relates to a hot press shaping process of a thermoplastic product and a hot press shaping apparatus thereof. Thermoplastic blanks extruded from a finish mold of an extrusion machine are processed and shaped into a thick wall or a solid and a product whose surface is undulant periodically. The blanks are sent into a press track between two crawler type press molds and are pressed by heat to be shaped at temperature of 10 DEG C to 50 DEG C higher than the melting point of the blanks. In a shaping zone of the middle and back part of the press track, the product is disengaged from the press track but is sent into a tempered zone after product temperature is quickly cooled to temperature of 55 DEG C lower than the melting point, and the tempering treatment of the product is carried out at temperature of 40 DEG C to 80 DEG C lower than the material melting point of the product.
Description
The present invention relates to a kind of plastic material pressure molding of producing the indefinite length goods, particularly a kind of thermoplastic article hot press forming technology and hot-press forming device thereof.
Plastic film capicitor of the prior art is processed in the following way: plastic melt is sent into the two halves subdivision that is arranged in mouthful die orifice and the inner chamber periphery ripply shaping mould that distributes after annular space shape mouth mould is cylindric extruding, a certain amount of compressed air is blown in the inner chamber of cylindric plastics base substrate, make it horizontal inflation and contact to be corrugated, behind cooling and shaping, break away from again with shaping mould with bellows wall on the shaping mould.This method and corresponding apparatus can only be used for the part of the surperficial symmetric periodic fluctuating of processing thin-walled shape, and for the part of the sort of heavy wall shape or solid surperficial asymmetric periodic relief, prior art does not have series of solutions.
The objective of the invention is to overcome weak point of the prior art, and a kind of thermoplastic article hot press forming technology and former thereof that can be used for processing the part of heavy wall shape or solid surperficial symmetry or asymmetric periodic relief is provided.
The objective of the invention is to realize by following approach.
The thermoplastic article hot press forming technology utilizes the thermoplastic blanks of extruding from extruding dies, and the goods so that the machine-shaping surface period rises and falls comprise following step of carrying out successively:
Encircle the pressing mold that is linked into crawler belt that is trapped among on two drives separately through two parallel arranged groups, blank sent in the pressure road between above-mentioned two pressing molds,
In pressing anterior hot pressing district, road near mouthful mould, being shaped it, and become goods with hot pressing blank under the temperature that is higher than 10 ℃～50 ℃ of blank fusing points,
In pressing the road, the rear portion is in the setting zone away from the mouth mould, products temperature is cooled to rapidly be lower than the temperature of fusing point below 55 ℃,
Press the goods in road to send in the refined zone with breaking away from, tempering treatment articles under the temperature that is lower than 40 ℃～80 ℃ of goods material fusing points,
Take-up product.
The thermoplastic article hot-press forming device, the device that batches that comprises the shaping mould that is positioned at mouthful die orifice and be positioned at the equipment rear end, its structural feature is: also include heater that the pressing mold that will enter in the hot pressing district is heated, the pressing mold in the setting zone and goods are implemented the cooler of cooling, and be arranged in refined zone carries out temper to goods temper device, shaping mould comprises two parallel arranged but encircles the pressing mold that is linked into crawler belt that is trapped among on two drives, the molded surface periodic relief of at least one pressing mold separately.
Hot pressing and shaping process have internal stress in the goods, eliminating it, the goods after guaranteeing to batch are indeformable or in the internal strain of certain limitation scope by tempering.
And caterpillar pressing mold is not only capable of circulation back and forth, and periodic relief, mould continuously both were provided, and can drive goods again, and, can also provide enough pressure for product molding.
Purpose of the present invention can also realize by following approach.
Said thermoplastic blanks can be thermoplastic elastomer (TPE), also can be plastics.
This thermoplastic elastomer (TPE) can be by polypropylene and ethylene-propylene diene copolymer is mixing forms.
Preferably a kind of solid table of said thermoplastic article and the belt product of periodic relief.
In setting zone, preferably products temperature is cooled to normal temperature rapidly.
Preferably will enter the pressing mold outer surface in hot pressing district with flame thrower direct injection heating.
In the refined zone, the time of temper goods is preferably 2～4 minutes.
Further developing of above-mentioned thermoplastic article hot-press forming device can be such:
Heater can be a kind of flame thrower to pressing mold outer surface direct injection heating.
Cooler can be a kind of water smoke spray thrower to the direct spray water mist of pressing mold outer surface.
Temper device can be a kind of by far-infrared tube continuously and connect form, refined zone is tunnel shape and is arranged in the far infrared temper device of far-infrared tube inner chamber.
Far infrared has the characteristics of uniformly penetrating heat; And the quantity of adjusting the far-infrared tube that connects together can realize the adjustment to tempering time easily.
In sum, the present invention has following advantage compared to existing technology: can be used for that hot-forming heavy wall or solid surperficial symmetric periodic rise and fall or the thermoplastic article of asymmetric periodic relief, be particularly suitable for the molded thermoplastic elastomer, forming process is reasonable, effective and simple and direct, former is simpler, easy to implement, the temper that is proposed should belong to initiative in the mode of eliminating the goods internal stress in thermoplastic article processing and forming field, and effect is obvious, can guarantee that goods after the moulding are for a long time indeformable or in the internal strain of certain limitation allowed band.
Accompanying drawing 1 is the structural representation of thermoplastic article hot-press forming device in the most preferred embodiment of the present invention.
Accompanying drawing 2 is structural representation sketches of dip mold in the most preferred embodiment of the present invention.
Accompanying drawing 3 is the left views among Fig. 2.
Accompanying drawing 4 is the A-A cutaway views among Fig. 2.
Accompanying drawing 5 is structural representation sketches of top die in the most preferred embodiment of the present invention.
Accompanying drawing 6 is left views of Fig. 5.
Below we carry out more detailed description to the present invention in conjunction with the embodiments.Most preferred embodiment:
The thermoplastic article hot press forming technology,, a surface period solid with machine-shaping by the mixing thermoplastic elastomer (TPE) blank that forms of polypropylene and ethylene-propylene diene copolymer that utilization is extruded from extruding dies rise and fall into the triangular tooth driving-belt that another surface of continuous dentation is the plane, comprise following step of carrying out successively:
Through two parallel arranged but separately ring is trapped among the pressing mold that is linked into crawler belt on two drives, blank is sent in the pressure road between above-mentioned two pressing molds,
Heat the pressing mold outer surface that will enter the hot pressing district with the flame thrower direct injection,
In pressing anterior hot pressing district, road near mouthful mould, to be higher than 10 ℃～30 ℃ of blank fusing points, promptly under 190 ℃～210 ℃ temperature the hot pressing blank with moulding it, and become goods,
In pressing the road, the rear portion is in the setting zone away from the mouth mould, by the direct spray water mist of pressing mold outer surface is cooled to normal temperature rapidly with products temperature,
To break away from press the goods in road to send in the refined zone, promptly be incubated under 115 ℃～125 ℃ the temperature being lower than 55 ℃～65 ℃ of goods material fusing points, with the temper goods,
Take-up product.
With reference to accompanying drawing 1, the thermoplastic article hot-press forming device comprises as lower member:
Be positioned at the shaping mould of 1 mouthful of extruding dies, shaping mould comprises two parallel arranged, but ring is trapped among the pressing mold that is linked into crawler belt 2 on two drives 3 separately, two drives 3 one are driving wheel, one is follower, and, two drives 3 are a kind of double cog sprocket wheel that two sprocket wheels are connected together that is similar to, the crawler belt both sides all have the prominent button 21 that is equally spaced, dashing forward between the buttons 21 in prominent respectively two of the corresponding crawler belt side that is inserted in of the sprocket of drive 3 both sides, thereby realizes the transmission engagement of crawler belt and drive 3;
To entering the heater 4 that pressing mold 2 outer surfaces in the hot pressing district carry out the direct injection flame heat;
The cooler 5 to pressing mold in the setting zone and the direct spray water mist of goods to implement to cool off;
Be arranged in refined zone goods are carried out the temper device 6 of temper, it is spliced continuously by far-infrared tube and forms, and refined zone is tunnel shape and is arranged in the far-infrared tube inner chamber;
Be positioned at device end take-up product batch device 7.
With reference to accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, dip mold one end has prominent protruding prominent knob 21 outside side surface, the other end then has a prominent core 22, on structure and size, should can be contained in the folder chambeies of facing mutually between the two prominent knobs 21 by prominent core 22, like this, between adjacent two dip molds, prominent core 22 docks with prominent knob 21, thereby realizes that numerous dip molds are linked into crawler belt.The section of dip mold forming part is trapezoidal, in the longitudinal direction molded surface then periodic relief be continuous dentation.
With reference to accompanying drawing 5 and accompanying drawing 6, the top die molded surface is tabular, and all the other structures are similar to dip mold.
Claims (10)
1. the thermoplastic article hot press forming technology utilizes the thermoplastic blanks of extruding from extruding dies, and the goods so that the machine-shaping surface period rises and falls is characterized in that, comprise following step of carrying out successively,
1.1 through two parallel arranged but separately ring is trapped among the pressing mold that is linked into crawler belt on two drives, blank is sent in the pressure road between above-mentioned two pressing molds,
1.1.1 in pressing anterior hot pressing district, road, being shaped it, and become goods with hot pressing blank under the temperature that is higher than 10 ℃～50 ℃ of blank fusing points near mouthful mould,
1.1.2 in pressing the road, the rear portion is in the setting zone away from the mouth mould, products temperature is cooled to rapidly be lower than the temperature of fusing point below 55 ℃,
Send in the refined zone 1.2 will break away from the goods of pressing the road, tempering treatment articles under the temperature that is lower than 40 ℃～80 ℃ of goods material fusing points,
1.3 take-up product.
2. thermoplastic article hot press forming technology according to claim 1 is characterized in that, said thermoplastic blanks is a thermoplastic elastomer (TPE).
3. thermoplastic article hot press forming technology according to claim 1 is characterized in that, the belt product that preferably a kind of solid, surface period of said thermoplastic article rises and falls.
4. thermoplastic article hot press forming technology according to claim 1 is characterized in that, in setting zone, preferably products temperature is cooled to normal temperature rapidly.
5. thermoplastic article hot press forming technology according to claim 1 is characterized in that, preferably will enter the pressing mold outer surface in hot pressing district with flame thrower direct injection heating.
6. thermoplastic article hot press forming technology according to claim 1 is characterized in that, in the refined zone, the time of temper goods is preferably 2～4 minutes.
7. thermoplastic article hot-press forming device, what comprise the shaping mould that is positioned at a mouthful mould (1) mouthful and be positioned at the equipment rear end batches device (7), it is characterized in that, also include the heater (4) that the pressing mold (2) that will enter in the hot pressing district is heated, cooler (5) to pressing mold in the setting zone (2) and goods enforcement cooling, and be arranged in refined zone carries out temper to goods temper device (6), shaping mould comprises two parallel arranged but encircles the pressing mold that is linked into crawler belt (2) that is trapped among on two drives, the molded surface periodic relief of at least one pressing mold (2) separately.
8. thermoplastic article hot-press forming device according to claim 7 is characterized in that, heater (4) is a kind of flame thrower to pressing mold (2) outer surface direct injection heating.
9. thermoplastic article hot-press forming device according to claim 7 is characterized in that, cooler (5) is a kind of water smoke spray thrower to the direct spray water mist of pressing mold (2) outer surface.
10. thermoplastic article hot-press forming device according to claim 7 is characterized in that, temper device (6) be a kind of by far-infrared tube continuously and connect and form, refined zone is tunnel shape and is arranged in the far infrared temper device of far-infrared tube inner chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97107015A CN1079723C (en) | 1997-06-19 | 1997-06-19 | Hot-press moulding technique for thermoplastic products and hot-press moulding equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97107015A CN1079723C (en) | 1997-06-19 | 1997-06-19 | Hot-press moulding technique for thermoplastic products and hot-press moulding equipment thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1203147A CN1203147A (en) | 1998-12-30 |
| CN1079723C true CN1079723C (en) | 2002-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97107015A Expired - Fee Related CN1079723C (en) | 1997-06-19 | 1997-06-19 | Hot-press moulding technique for thermoplastic products and hot-press moulding equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1079723C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381275C (en) * | 2006-05-12 | 2008-04-16 | 宋旭 | Fully automatic crawler biomass briquetting machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041131A (en) * | 1988-09-16 | 1990-04-11 | 曼夫瑞德·A·A·鲁波克 | Improvements in or relating to apparatus for producing tubular products with annular ribs |
-
1997
- 1997-06-19 CN CN97107015A patent/CN1079723C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041131A (en) * | 1988-09-16 | 1990-04-11 | 曼夫瑞德·A·A·鲁波克 | Improvements in or relating to apparatus for producing tubular products with annular ribs |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1203147A (en) | 1998-12-30 |
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