SU539775A1 - Pneumatic molding form for thermoplastic sheet blanks - Google Patents
Pneumatic molding form for thermoplastic sheet blanksInfo
- Publication number
- SU539775A1 SU539775A1 SU2144111A SU2144111A SU539775A1 SU 539775 A1 SU539775 A1 SU 539775A1 SU 2144111 A SU2144111 A SU 2144111A SU 2144111 A SU2144111 A SU 2144111A SU 539775 A1 SU539775 A1 SU 539775A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sheet blanks
- thermoplastic sheet
- molding form
- pneumatic molding
- cutting
- Prior art date
Links
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
1one
Изобретение относитс к устройствам дл переработки пластмасс, в частности к устройствам дл пневмоформовани листовых заготовок .The invention relates to devices for processing plastics, in particular, to devices for pneumatic forming of sheet blanks.
Известно устройство дл пневмоформовани , в котором часть прижимного бурта подпружИнена и вместе с жесткой ее частью образует вырубное приспособление 1.A device for pneumatic forming is known, in which a part of the clamping collar is spring loaded and, together with its rigid part, forms a notch device 1.
Недостаток такой формы - низкое качество поверхности контура издели вследствие образовани сколов и заусенцев.The disadvantage of this form is the low quality of the contour surface of the product due to the formation of chips and burrs.
Наиболее близким к предложенному изобретению вл етс устройство дл пневмоформовани , содержащее прижимную плиту с полостью дл подачи сжатого воздуха, матрицу с оформл ющей поверхностью и прижимным буртом и вырубное приспособление 2. Известное устройство обеспечивает обрубку контура издели в процессе формовани ,. однако качествО поверхности контура издели низкое вследствие образовани сколов и заусенцев . Кроме того, необходимо значительное увеличение усили .пресса.The closest to the proposed invention is a pneumatic forming device comprising a pressure plate with a cavity for supplying compressed air, a matrix with a shaping surface and a pressure shoulder, and a cutting tool 2. The known device provides for cutting the contour of the product during the molding process,. However, the quality of the contour surface of the product is low due to the formation of chips and burrs. In addition, you need a significant increase in effort.
Цель изобретени - исключение -сколов и снижение усили вырубки.The purpose of the invention is the elimination of chipping and reduction of the cutting effort.
Дл достижени этого в прижимном бурте матрицы предложенного устройства выполнен замкнутый паз с установленной в нем упругой мембраной и закрепленным на ней ножом с электронагревателем, причем полость, ограниченна стенками паза и мембраной, соединена с магистралью сжатого воздуха.To achieve this, in the clamping collar of the matrix of the proposed device, a closed groove is made with an elastic membrane installed in it and a knife attached to it with an electric heater, the cavity limited by the walls of the groove and the membrane connected to the compressed air line.
Такое выполнение устройства обеспечивает снижение усили вырубки и исключает образование сколов.This embodiment of the device reduces the effort of cutting and eliminates the formation of chips.
На чертеже схематически изображена часть формы в разрезе.The drawing shows schematically part of the shape in section.
Форма дл пневмоформовани термопластичных листовых заготовок состоит из прижимной плиты 1, матрицы 2 с прижимным буртом 3, в котором выполнен аз «а с упругой мембраной 4, ножом 5 и электронагревателем 6.The form for pneumatic forming of thermoplastic sheet blanks consists of a pressure plate 1, a matrix 2 with a clamping shoulder 3, in which az is made with an elastic membrane 4, a knife 5 and an electric heater 6.
При работе формы разогрета термопластична заготовка помещаетс на прижимной бурт 3 матрицы 2, зажимаетс прижимной плитой 1, и производитс формование издели .When the mold is heated, the thermoplastic billet is placed on the clamping shoulder 3 of the matrix 2, clamped by the clamping plate 1, and the product is formed.
Одновременно включением электронагревател 6 производитс разогрев режущей части ножа 5 до температуры, превышающей температуру плавлени перерабатываемого материала , и полость паза «а соедин етс с магистралью сжатого воздуха. Мембрана 4, деформиру сь, перемещает нож, в результате чего обеспечиваетс качественна обрезка контура издели .At the same time, turning on the electric heater 6, the cutting part of the knife 5 is heated to a temperature exceeding the melting point of the processed material, and the cavity of the groove is connected to the compressed air line. The diaphragm 4, when deformed, moves the knife, as a result of which a high-quality cutting of the product contour is ensured.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2144111A SU539775A1 (en) | 1975-06-13 | 1975-06-13 | Pneumatic molding form for thermoplastic sheet blanks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2144111A SU539775A1 (en) | 1975-06-13 | 1975-06-13 | Pneumatic molding form for thermoplastic sheet blanks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU539775A1 true SU539775A1 (en) | 1976-12-25 |
Family
ID=20622645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2144111A SU539775A1 (en) | 1975-06-13 | 1975-06-13 | Pneumatic molding form for thermoplastic sheet blanks |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU539775A1 (en) |
-
1975
- 1975-06-13 SU SU2144111A patent/SU539775A1/en active
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