The ribbon is composed of wavy ribbon, die-directed baffle and guide strip on the conveyor belt, so these parts of the die should be designed separately. The die section of rubber products with guide strip guide strip. It plays a guiding and positioning role in the working process of conveyor belt.

橫向檔板

Transverse baffle

橫向擋板有兩種類型。一種是適合于傾斜39。以下輸送的T型擋板,。一種則是適合于傾斜40。以上的輸送的C型擋板。目前，在我國應(yīng)用比較廣泛的是適于傾斜39。以下的T型橫向擋板由于擋邊采用波紋狀,工作時伸縮性較大,可減少應(yīng)力點的應(yīng)力集中;而且此帶耐壓性能高、穩(wěn)定性能好、自我效果也比較好、耐磨性能優(yōu)異。

There are two types of transverse baffles. One is suitable for tilt 39. T-type baffle conveyed below. One is suitable for tilting 40. Above the conveyor C baffle. At present, tilt 39 is widely used in China. The following T-type transverse baffle has the characteristics of corrugated edge, greater flexibility when it works, which can reduce the stress concentration at the stress point; moreover, the belt has high pressure resistance, good stability, good self-cleaning effect and excellent wear resistance.

波形擋邊

Waveform baffle

波形擋邊的幾何形狀復(fù)雜,模具型腔的設(shè)計及加工都很困難,因此我們采用鑲塊組合式結(jié)構(gòu)。這種結(jié)構(gòu)的特點是在壓模加工取出制品以及硫化成型時能排除廢氣。除此之外,型腔磨損或損壞時修理方便,可以單換鑲塊,節(jié)約工料。設(shè)計鑲拼件—上模波形條,和下模波形條。此兩模條波形需上下對稱,光潔度要求一致,然后用螺釘分別緊固在上下模上。對于在下模模腔與上下模條的配合尺寸要求比較嚴格,如果合模間隙過大,鑲拼的縫隙造成廢邊,影響制品的質(zhì)量,同時造成膠料的流失。所以希望鑲拼間隙越小越好,我們選用H7h/`配合.另外,由于在下模還有縱向定位的間題,所以我們在下模條上加定位模條,用螺釘緊固,然后隨同下模條一同鑲在下模腔內(nèi),用螺釘固定。

Because of the complex geometry of waveform baffle, the design and processing of die cavity are very difficult, so we adopt insert combined structure. The feature of this structure is that the exhaust gas can be eliminated when the products are taken out from the die-pressing process and vulcanization moulding. In addition, when the cavity is worn or damaged, it is easy to repair. The insert can be replaced by a single insert to save labor. Firstly, we design the mosaic - upper mode waveform strip and lower mode waveform strip. The waveforms of the two strips should be symmetrical, and the smoothness should be the same. Then the two strips should be fastened on the upper and lower dies with screws respectively. The matching size between the lower die cavity and the upper and lower die strips is strictly required. If the closing gap is too large, the mosaic gap will cause waste edges, which will affect the quality of the product and cause the loss of rubber. Therefore, we hope that the smaller the insertion gap, the better, we choose H7h/` cooperation. In addition, because there is a problem of longitudinal positioning in the lower die, so we add positioning die on the lower die, fasten it with screw, and then insert it into the lower die cavity together with the lower die, and fix it with screw.

為了排除型腔內(nèi)的空氣,在下模腔底部隔一定距離打通孔(孔徑為帕)。以上幾種制品均由410x1200型鄂式硫3.1橡膠硫化收縮率在工程中,常用制品零件所需膠料的體積與制品的體積的差和零件體積之比,來近似地表示橡膠的硫化收縮率:V,一V,_入-~`,尸一=X100%V2式中,K—膠料收縮率;V;—型腔的體積;VZ—制品零件的體積。收縮率與很多因素有關(guān),在工程中一般取經(jīng)驗數(shù)據(jù)。因其膠種不同,K值不同,純膠的K值較大,帶夾層膠K值較小。由于我們的制品是純橡膠,因此在以上設(shè)計中取K-2%.32模具型腔設(shè)計收縮率確定以后,根據(jù)下式確定型腔主要線性尺寸時:D、=(1+K)22式中,DM—模具型腔尺寸;22—制品零件設(shè)計圖所示尺寸。

In order to eliminate the air in the cavity, holes (aperture is Pa) are drilled at a certain distance at the bottom of the lower cavity. In engineering, the shrinkage of vulcanized rubber of 410x1200 E-type sulphur 3.1 is approximated by the difference between the volume of rubber needed for parts of common products and the volume of parts and the ratio of the volume of parts. The shrinkage of vulcanized rubber is expressed approximately as follows: V, V, in-, corpse 1 = X100% V2, K-rubber shrinkage; V; - cavity volume; VZ-part volume. Contraction rate is related to many factors, and empirical data are usually used in engineering. Because of the different gum types and K value, the K value of pure gum is larger and the K value of sandwich gum is smaller. Since our products are pure rubber, K-2%. 32 die cavity design shrinkage rate is determined in the above design. When the main linear dimensions of the cavity are determined according to the following formula: D, =(1+K) 22, DM-die cavity size; 22-product part design drawing size.

制品零件的口型設(shè)計

Mouth Design of Product Parts

在工程中,橡膠的口型與很多因素有關(guān),在設(shè)計口型時沒有固定的公式與原則,只是通過經(jīng)驗來設(shè)計測定。

In engineering, the shape of rubber mouths is related to many factors. There are no fixed formulas and principles in the design of mouths, but only through experience to design and determine.

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