RU1781057C - Polymeric small piece manufacturing die - Google Patents
Polymeric small piece manufacturing dieInfo
- Publication number
- RU1781057C RU1781057C SU904844799A SU4844799A RU1781057C RU 1781057 C RU1781057 C RU 1781057C SU 904844799 A SU904844799 A SU 904844799A SU 4844799 A SU4844799 A SU 4844799A RU 1781057 C RU1781057 C RU 1781057C
- Authority
- RU
- Russia
- Prior art keywords
- annular
- small piece
- partitions
- piece manufacturing
- manufacturing die
- Prior art date
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
между собой кольцевыми щел ми 8, образованными наружными поверхност ми перегородок нижней 5 и внутренней поверхностью матрицы 2.between each other with annular slots 8 formed by the outer surfaces of the partitions of the lower 5 and the inner surface of the matrix 2.
Пресс-форма работает следующим об- разом.The mold works as follows.
Заливочна крышка 1 подсоедин етс к литьевой машине (на фиг. не показана) и полость между арматурными вкладышамТч и матрицей 2 вакуумируетс . Полимер пода- етс сначала в зону верхнего гнезда 7, постепенно через щели 8 проника до нижнего. Таким образом, на несколько изделий имеетс только один литник-полость заливочной крышки. Это существенно со- кращает потери материала и трудозатраты по удалению избытка.The filling cap 1 is connected to an injection molding machine (not shown in Fig.) And the cavity between the reinforcing inserts Tc and matrix 2 is evacuated. The polymer is first supplied to the zone of the upper socket 7, gradually through the slots 8 of the penetration to the lower. Thus, for several products there is only one gate-cavity of the filling cap. This significantly reduces material loss and labor to remove excess.
После отверждени дорн 3 совместно с издели ми 9 выталкиваетс из матрицы 2 и устанавливаетс во вращающиес центры 10(фиг.2).After curing, the mandrel 3, together with the articles 9, is ejected from the matrix 2 and mounted in the rotating centers 10 (Fig. 2).
Напротив перемычек 11, образованных цеп ми 8 и соедин ющих издели 9, размещают нажимные ролики 12, которые при вра- щении дорна Заказывают давление на материал и разрушают его перерезанием в зоне дисковых ножей 5. В результате получают раздельные издели , поскольку ножи 5 покрыты антиадгезионным материалом и не залипают на полимере.Opposite the jumpers 11 formed by chains 8 and connecting the articles 9, press rollers 12 are placed, which, when the mandrel is rotated, order pressure on the material and destroy it by cutting in the area of the disk knives 5. As a result, separate products are obtained, since the knives 5 are coated with release adhesive material and do not stick on the polymer.
При определенном сочетании величины щели 8 и соответственно перемычки 11, механических свойств материала и температурных режимов возможно самопроизвольное разрушение в этой зоне за счет напр жений при усадке. Наличие напр женного состо ни 13 в полимере у кромки ножа значительно облегчает задачу разрезани перемычки роликом.With a certain combination of the size of the gap 8 and, respectively, of the bridge 11, the mechanical properties of the material and temperature conditions, spontaneous destruction in this zone is possible due to stresses during shrinkage. The presence of a stress state 13 in the polymer at the edge of the knife greatly facilitates the task of cutting the bridge with a roller.
Таким образом, описанна конструкци пресс-формы позвол ет не только получать одновременно несколько изделий, но и повысить качество путем исключени механической обработки дл получени конечных размеров по торцам изделий.Thus, the described mold design allows not only to obtain several products at the same time, but also to improve the quality by eliminating machining to obtain final dimensions at the ends of the products.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU904844799A RU1781057C (en) | 1990-06-29 | 1990-06-29 | Polymeric small piece manufacturing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU904844799A RU1781057C (en) | 1990-06-29 | 1990-06-29 | Polymeric small piece manufacturing die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU1781057C true RU1781057C (en) | 1992-12-15 |
Family
ID=21524012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU904844799A RU1781057C (en) | 1990-06-29 | 1990-06-29 | Polymeric small piece manufacturing die |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU1781057C (en) |
-
1990
- 1990-06-29 RU SU904844799A patent/RU1781057C/en active
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