CN203957200U - Plastic semi-finished product preformed system - Google Patents
Plastic semi-finished product preformed system Download PDFInfo
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- CN203957200U CN203957200U CN201420119843.9U CN201420119843U CN203957200U CN 203957200 U CN203957200 U CN 203957200U CN 201420119843 U CN201420119843 U CN 201420119843U CN 203957200 U CN203957200 U CN 203957200U
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- finished product
- adhesive film
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- preforming tool
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Abstract
The utility model relates to a kind of plastic semi-finished product preformed system, comprise the preforming tool with at least one wall, it is characterized in that, this system also comprises that at least one is fixed on the anti-adhesive film on supporter, when plastic semi-finished product being inserted in described preforming tool, described anti-adhesive film is between the described wall of described plastic semi-finished product and described preforming tool.Because anti-adhesive film has anti-adhesiveness, it can prevent that preformed plastic semi-finished product (being preform) from adhering on the wall of preforming tool with simple and effective way, thereby be convenient to preform, from preforming tool, depart from, be also convenient to robot gripping preform.In addition, owing to having used anti-adhesive film, damage during all right limit compression, preform being produced.
Description
Technical field
The utility model relates to composite semi-finished product processing apparatus field, more specifically, relates to plastic semi-finished product preformed system.
Background technology
In the field such as motor vehicle, a lot of parts need to combine high mechanical strength and lighter weight.For this reason, known way is to replace steel with thermosetting or thermoplastic plastics.
The method of moulding of known several plastic components:
Compression forming method (for the thermosets such as sheet molding compound (SMC))
Hot briquetting method (thermoplastic is compressed)
Injection moulding (for thermoplastic)
Resin transfer moulding method (RTM)
It is well-known using reinforced plastics (thermosetting or thermoplasticity).These materials are mixed by resinous polymer and stiffener.Conventional stiffener for example has glass fibre and carbon fiber, and these fibers can be that cut off or continuous.
According to used plastic material and method of moulding, may need to manufacture a part base substrate by preformed semi-finished product, and then put it in mfg. moulding die.
For example, conventionally use stiffener content high (especially greater than or equal to 50%(weight)) SMC manufacture half structural composite material component.
Yet, because these SMC sheets contain more fiber than traditional SMC, cause plastics (resin) mobility in mfg. moulding die poorer, therefore need to be to these SMC sheet preformed to manufacture complex-shaped parts.Thus, between the cutting of SMC sheet and the molded step of acquisition component end item, add a SMC sheet preformed step.
The object of preformed step is to give semi-finished product a preliminary shape by means of a different special installation of the equipment required from molded product parts.For example, with mfg. moulding die by contrast, pre-forming device needn't comprise the net shape of component end item.It is used different when in addition, the parameter such as the pressure in pre-forming device when work, temperature, time is conventionally from molded product parts.For example, the temperature of temperature during preformed during lower than molded product parts, also just because of this when preformed, can not send out resiniferous and flow or polymerization.
Known have several different preform techniques, for example, and the method for a kind of being called as " vacuum preformed ".The method is by " vacuum tarpaulin of a kind of being called as
" film be placed on SMC sheet, then form vacuum, cause this tarpaulin to be close on the wall of mould, thereby cause SMC sheet to be placed between this tarpaulin and mould thereupon.
Also known another be called as the compression preformation method of " cold stamping ", in the method, plastic semi-finished product is placed in to the pre-forming device of die-punch type, then close this equipment, on semi-finished product, exert pressure, for example remain on, under moderate temperature (, room temperature) simultaneously.
Yet, no matter use which kind of method, this preformed step has a very large problem: preform can stick on the surface of pre-forming device after preformed.This adhesion makes the robot that is responsible for preform to take out and insert subsequently in mfg. moulding die be difficult to this preform of gripping, also makes this preform be difficult to deviate from from mould simultaneously.In addition, this adhesion also can cause pre-forming device to be made dirty.Finally, if carry out preformed with the equipment of die-punch type, SMC sheet also may be torn.
Utility model content
The purpose of this utility model is above-mentioned technical problem.
For this reason, the utility model provides a kind of plastic semi-finished product preformed system, comprise the preforming tool with at least one wall, it is characterized in that, this system also comprises that at least one is fixed on the anti-adhesive film on supporter, when plastic semi-finished product being inserted in described preforming tool, described anti-adhesive film is between the described wall of described plastic semi-finished product and described preforming tool.Because anti-adhesive film has anti-adhesiveness, it can prevent that preformed plastic semi-finished product (being preform) from adhering on the wall of preforming tool with simple and effective way, thereby be convenient to preform, from preforming tool, depart from, be also convenient to robot gripping preform.In addition, owing to having used anti-adhesive film, damage during all right limit compression, preform being produced.
According to plastic semi-finished product preformed system of the present utility model, can also comprise one or more in following characteristics:
Above support is fixed on described preforming tool or can moves.
Preferably, described anti-adhesive film does not adhere to described wall and the described plastic semi-finished product of described preforming tool under preformed condition.
Described anti-adhesive film can be flat, or has the shape of the described wall of described preforming tool.
Preferably, described anti-adhesive film has elasticity recovery, when not being stressed, can recover original shape.Like this, can be after preforming tool to be opened, described anti-adhesive film can eject preform, is convenient to the demoulding.
Preferably, described anti-adhesive film is the film that contain silicone of percentage elongation between 100% and 800%.
In one embodiment, described plastic semi-finished product is the thermosets of sheet molding compound (SMC) type.
In one embodiment, described system also comprises the vacuum tarpaulin that covers described preforming tool and described plastic semi-finished product, by vacuumizing on the wall that makes described plastic semi-finished product be fitted in described preforming tool below described vacuum tarpaulin.
In another embodiment, described preforming tool comprises die and punch, described at least one anti-adhesive film comprises the first anti-adhesive film being fixed on the first supporter and is fixed on the second anti-adhesive film on the second supporter, when plastic semi-finished product being inserted in described preforming tool, described the first anti-adhesive film is between described plastic semi-finished product and the wall of described die, and described the second anti-adhesive film is between described plastic semi-finished product and the wall of described punch.
Preferably, described the second supporter is fixed on described punch and described the first supporter can move, or described the first supporter is fixed on described die and described the second supporter can move.
Preferably, described system also comprises that at least one is fixed on the 3rd anti-adhesive film on the 3rd supporter that can move.Therefore, when preforming tool is when processing a semi-finished products, can at other local the 3rd supporters of giving, load semi-finished product and anti-adhesive film concurrently, like this after completing preformed, the supporter that is loaded with preform can be shifted out to preforming tool, the 3rd supporter that has loaded semi-finished product and anti-adhesive film is inserted to preforming tool simultaneously, obviously can reduce the time of wait like this, enhance productivity.
Preferably, described system also comprises and takes out blowning installation.According to specific embodiment, this is taken out blowning installation and can be used for vacuumizing, allow anti-adhesive film and/or treat that preform tablet is fitted on corresponding mould, also can be used for being reintroduced back to air between the anti-adhesive film fitting tightly and mould, thereby both are departed from mutually.
Accompanying drawing explanation
The utility model is described in further detail below with reference to accompanying drawings.Those skilled in the art hold intelligible, and these accompanying drawings are the object for illustrating only, and is not intended to protection domain of the present utility model to be construed as limiting.In figure, identical Reference numeral represents same or analogous parts.For illustrative purposes, these figure not draw completely in proportion.
Fig. 1 is according to the side schematic view of the plastic semi-finished product preformed system of the utility model the first embodiment.
Fig. 2 is according to the side schematic view of the plastic semi-finished product preformed system of the utility model the second embodiment.
Die and punch that Fig. 3 shows the preformed system in Fig. 2 close up state afterwards.
Fig. 4 shows the state while just having opened mould after step in Fig. 3.
Fig. 5 is the side schematic view that adopts the preform that the preformed system of Fig. 2 manufactures.
Fig. 6 shows variant embodiment illustrated in fig. 2, and wherein, anti-adhesive film has elasticity, can after completing preformed step, recover original shape and preform is ejected from mould.
The specific embodiment
Fig. 1 and Fig. 2-6 show respectively two embodiment according to plastic semi-finished product preformed system of the present utility model.
In the first embodiment shown in Fig. 1, plastic semi-finished product preformed system comprises preforming tool MP and an anti-adhesive film PM who is fixed on supporter SU.In this example, preforming tool MP is punch PO.Should be understood that, preforming tool MP can be also die.By means of this preformed system, can implement aforesaid " vacuum preformed " method:
Plastic semi-finished product SP is placed in to anti-adhesive film PM upper, makes anti-adhesive film PM between these semi-finished product SP and the wall of preforming tool MP;
The air of extraction below a side contrary with described wall is arranged at the tarpaulin BV on semi-finished product SP, realize vacuum, thereby make this tarpaulin that semi-finished product SP is exerted pressure and is close on described wall, so that its preformed (that is, having predetermined preliminary shape) obtains preform;
Thereby stop vacuumizing, stop exerting pressure, and the described wall of preform and preforming tool MP is departed from;
From preforming tool MP, take out preform.
In the second embodiment shown in Fig. 2-5, plastic semi-finished product preformed system comprises preforming tool MP and is separately fixed at the first anti-adhesive film PM and the second anti-adhesive film SM on its supporter SU, and wherein preforming tool MP comprises die MA and punch PO.When plastic semi-finished product being inserted in preforming tool MP, the first anti-adhesive film PM is between plastic semi-finished product SP and the wall of punch PO, and the second anti-adhesive film SM is between plastic semi-finished product SP and the wall of die MA.Shown in Fig. 2-5, be above die MA is positioned at, punch PO is positioned at below, but should be understood that, can be contrary situation, and punch PO is positioned at top, and die MA is positioned at below.In the present embodiment, punch PO maintains static, and die MA can move downward until matched moulds state.But should be understood that, can be contrary situation completely, and die MA maintains static, and punch PO can move upward until matched moulds state.
In a unshowned variant of this embodiment, this plastic semi-finished product preformed system only comprises an anti-adhesive film being fixed on its supporter.
In another unshowned variant of this embodiment, this plastic semi-finished product preformed system also comprises that at least one is fixed on the 3rd anti-adhesive film on the 3rd supporter that can move.Therefore, when preforming tool is when processing a semi-finished products, can at other local the 3rd supporters of giving, load semi-finished product and anti-adhesive film concurrently, like this after completing preformed, the supporter that is loaded with preform can be shifted out to preforming tool, the 3rd supporter that has loaded semi-finished product and anti-adhesive film is inserted to preforming tool simultaneously, obviously can reduce the time of wait like this, enhance productivity.
By means of the preformed system shown in Fig. 2-5, can implement aforesaid " compression preformed " method:
Plastic semi-finished product SP is placed between the first anti-adhesive film PM and the second anti-adhesive film SM, make the first anti-adhesive film PM between these semi-finished product SP and the wall of punch PO, the second anti-adhesive film SM is between these semi-finished product SP and the wall of die MA (as shown in Figure 2);
Close up mould, thereby semi-finished product SP is exerted pressure and is close on the wall of die MA and punch PO, so that its preformed obtains preform (as shown in Figure 3);
Thereby open mould, stop exerting pressure (as shown in Figure 4), and the wall of preform and die MA and punch PO is departed from;
From mould MP, take out preform PF(as shown in Figure 5).
Fig. 6 shows variant embodiment illustrated in fig. 2, and wherein, anti-adhesive film has elasticity, can after completing preformed step, recover original shape and preform is ejected from mould.Adopt the preformed system shown in Fig. 6 can realize and similar " compression preformed " method of said process, difference is only: while opening mould, anti-adhesive film recovers original shape owing to having elasticity, thereby preform is ejected from mould.
Supporter in the utility model can be shaped as frame device, and anti-adhesive film is for example fixed on this shaped as frame device by means of becket; It can certainly be any other the suitable device that can fix anti-adhesive film.Should be understood that, in each embodiment of the present utility model, supporter can be mobile, for example, is arranged on head, when carrying out preformed, the supporter with anti-adhesive film is inserted between semi-finished product and the respective wall of preforming tool at every turn; Also can be fixed on preforming tool, anti-adhesive film is layered on the corresponding wall of this mould all the time, or be positioned at all the time the top of this mould respective wall.Therefore,, in the second embodiment for example, can allow the first and second supporters all fixing, or all move, or one is fixed a movement.Those skilled in the art can select as the case may be.
Advantageously, in the various embodiments described above, anti-adhesive film is the film for the anti-adhesion of semifinished material at preformed temperature.Preformed temperature is generally comprised between 0 degree Celsius and 150 degrees Celsius, preferably, is included between room temperature and 100 degrees Celsius, more preferably, is included between room temperature and 50 degrees Celsius.Therefore, anti-adhesive film can not adhere to the wall of preforming tool, can not adhere to semi-finished products yet.Therefore, facilitate preform to depart from from preforming tool, be also convenient to robot gripping preform.In addition, owing to having used anti-adhesive film, damage during all right limit compression, preform being produced.
As everyone knows, " adhesion " is the physical chemical phenomenon producing when making two material close contacts, can produce the separated mechanical strength of opposing.After forming this close contact, realize separated required energy and be called as adhesion energy.Adhesion is subject to the control of four kinds of effects: physical action, mechanism, chemical action and diffusion.Those skilled in the art will know that and how according to the material of used half-finished material and formation preforming tool wall, to determine and to meet the material that anti-adhesion requires.
For example, can serve as the anti-adhesive film in the utility model with the film that contains silicone, because they and preformed plastic mould and the inadhesive characteristic of plastic resin are well-known.
Anti-adhesive film in the utility model also can contain the stearate as anti-acidblocking agent, oil material (such as soap), maleic anhydride etc.
According to an embodiment, anti-adhesive film is that thickness is between the SC of 1mm and 5mm.
Should be understood that, in the utility model, anti-adhesive film can be for flat, and like this, when matched moulds, it also can deform because of being under pressure.But the shape of anti-adhesive film also can be identical with the shape of the mold wall that will contact with it, this is advantageous particularly in the situation that anti-adhesive film is layered on mold wall all the time.
Preferably, the anti-adhesive film in the utility model has certain percentage elongation, thereby so that they in semi-finished product preformed process, can deform laminating preforming tool shape.According to an embodiment, anti-adhesive film is the film that contain silicone of percentage elongation between 100% and 800%.
More preferably, anti-adhesive film has elasticity recovery, while being returned to free state, can recover its original shape.The elastomer film of being made by silicone or latex just possesses this specific character.Use so anti-adhesive film can make the demoulding of preform be more prone to, because anti-adhesive film has elasticity, when mould is opened, it can return to the original form by re-tensioning, thereby preform is ejected from preforming tool.
It is to be further understood that the stripping means except above-mentioned " ejection ", can also by anti-adhesive film with and its mold wall contacting between exert pressure this film and this wall departed from.This pressure can be applied by some local backing-out punch, also can for example, by injected gas (air) between mold wall and anti-adhesive film, apply.Therefore, preferably, according to plastic semi-finished product preformed system of the present utility model, also comprise and take out blowning installation.According to specific embodiment, this is taken out blowning installation and can be used for extracting out anti-adhesive film and will follow the air between its mold wall contacting before preformed, allow anti-adhesive film and/or treat that preform tablet (is for example fitted on corresponding mould, the first embodiment), also can be used between the anti-adhesive film fitting tightly and mould, being reintroduced back to air after preformed completes, thereby make both mutually depart from (for example, the second embodiment).
The plastic semi-finished product that can adopt preformed system of the present utility model can be thermoplastic or thermosets.For example, it can be the thermosets of SMC type.
Accompanying drawing and above declarative description non-limiting specific embodiment of the present utility model.In order to instruct inventive principle, simplified or omitted some conventional aspects.Those skilled in the art should understand that the modification that is derived from these embodiment drops in scope of the present utility model.Those skilled in the art should understand that the combination in every way of above-mentioned feature is to form a plurality of modification of the present utility model.Thus, the utility model is not limited to above-mentioned specific embodiment, and only by claim and their equivalent, is limited.
Claims (11)
1. a plastic semi-finished product preformed system, comprise the preforming tool with at least one wall, it is characterized in that, this system also comprises that at least one is fixed on the anti-adhesive film on supporter, when plastic semi-finished product being inserted in described preforming tool, described anti-adhesive film is between the described wall of described plastic semi-finished product and described preforming tool.
2. plastic semi-finished product preformed system as claimed in claim 1, is characterized in that, above support is fixed on described preforming tool or can moves.
3. plastic semi-finished product preformed system as claimed in claim 1, is characterized in that, described anti-adhesive film does not adhere to described wall and the described plastic semi-finished product of described preforming tool under preformed condition.
4. plastic semi-finished product preformed system as claimed in claim 1, is characterized in that, described anti-adhesive film is flat, or has the shape of the described wall of described preforming tool.
5. plastic semi-finished product preformed system as claimed in claim 1, is characterized in that, described anti-adhesive film has elasticity recovery, when not being stressed, can recover original shape.
6. plastic semi-finished product preformed system as claimed in claim 1, is characterized in that, described plastic semi-finished product is the thermosets of sheet molding compound (SMC) type.
7. the plastic semi-finished product preformed system as described in any one in claim 1-6, it is characterized in that, described system also comprises the vacuum tarpaulin that covers described preforming tool and described plastic semi-finished product, by vacuumizing on the wall that makes described plastic semi-finished product be fitted in described preforming tool below described vacuum tarpaulin.
8. the plastic semi-finished product preformed system as described in any one in claim 1-6, it is characterized in that, described preforming tool comprises die and punch, described at least one anti-adhesive film comprises the first anti-adhesive film being fixed on the first supporter and is fixed on the second anti-adhesive film on the second supporter, when plastic semi-finished product being inserted in described preforming tool, described the first anti-adhesive film is between described plastic semi-finished product and the wall of described die, and described the second anti-adhesive film is between described plastic semi-finished product and the wall of described punch.
9. plastic semi-finished product preformed system as claimed in claim 8, it is characterized in that, described the second supporter is fixed on described punch and described the first supporter can move, or described the first supporter is fixed on described die and described the second supporter can move.
10. plastic semi-finished product preformed system as claimed in claim 9, is characterized in that, described system also comprises that at least one is fixed on the 3rd anti-adhesive film on the 3rd supporter that can move.
11. plastic semi-finished product preformed systems as claimed in claim 1, is characterized in that, described system also comprises takes out blowning installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119843.9U CN203957200U (en) | 2014-03-17 | 2014-03-17 | Plastic semi-finished product preformed system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119843.9U CN203957200U (en) | 2014-03-17 | 2014-03-17 | Plastic semi-finished product preformed system |
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| CN203957200U true CN203957200U (en) | 2014-11-26 |
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| CN201420119843.9U Expired - Fee Related CN203957200U (en) | 2014-03-17 | 2014-03-17 | Plastic semi-finished product preformed system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106142595A (en) * | 2015-03-23 | 2016-11-23 | 全耐塑料公司 | The compression molded method of composite and realize the system of the method |
| CN107743388A (en) * | 2015-06-10 | 2018-02-27 | 米勒创新公司 | Thermoformable semirigid orthotic |
| CN113681869A (en) * | 2021-08-27 | 2021-11-23 | 安徽万安塑料制品有限公司 | Special-shaped drain board processing device |
| CN113939389A (en) * | 2019-06-12 | 2022-01-14 | 三菱瓦斯化学株式会社 | Method for producing molded article |
-
2014
- 2014-03-17 CN CN201420119843.9U patent/CN203957200U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106142595A (en) * | 2015-03-23 | 2016-11-23 | 全耐塑料公司 | The compression molded method of composite and realize the system of the method |
| CN107743388A (en) * | 2015-06-10 | 2018-02-27 | 米勒创新公司 | Thermoformable semirigid orthotic |
| CN113939389A (en) * | 2019-06-12 | 2022-01-14 | 三菱瓦斯化学株式会社 | Method for producing molded article |
| CN113939389B (en) * | 2019-06-12 | 2024-01-30 | 三菱瓦斯化学株式会社 | Method for producing molded article |
| CN113681869A (en) * | 2021-08-27 | 2021-11-23 | 安徽万安塑料制品有限公司 | Special-shaped drain board processing device |
| CN113681869B (en) * | 2021-08-27 | 2023-07-21 | 安徽万安塑料制品有限公司 | Abnormal shape drain bar processingequipment |
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Granted publication date: 20141126 Termination date: 20200317 |