模具专业英语_(New)2

(253页)

'模具专业英语_(New)2'
Unit 5 EXERCISE 3 Fill in the blanks with the suitable words or phrases given below, changing the form where necessary. gating location, flexibility, parting line, injection molding machine, runner system, plunger, injection unit, celluloid, plastic,volumeUnit 5 1. A ____p_a_rt_in_g__ l_in_e____in mold-making is the place where two or more parts of the mold meet. 2 . W e a r e o n e o f t h e l e a d i n g g l o b a l m a n u f a c t u r e r s o f _i_n_je_c_ti_o_n_ m__o_ld_i_n_g_ m__a_ch_i_n_e_s____for plastics and the relevant additional equipment. 3. It is also critical to select the most appropriate ___g_a_t_in_g_ _lo_c_a_t_io_n__on the part and the correct gating method for the application 4. The __in_j_e_c_ti_o_n_ u_n_i_t___ melts the polymer resin and injects the polymer melt into the mold. 5. A _p_l_u_n_g_e_r__is a common device used to release stoppages in plumbing. 6. The _r_u_n_n_e_r_ s_y_s_t_e_m_is a manifold for distribution of thermoplastic melt from the machine nozzle to the cavities. 7. In 1870 Hyatt and his brother set up the Albany Dental Plate Company to manufacture dental plate blanks which they called __c_e_ll_u_lo_i_d__________. 8. ___P_l_a_s_t_ic______is the general common term for a wide range of synthetic or semi-synthetic organic solid materials. 9. The ___v_o_l_u_m_e________of a figure is the number of cubes required to fill it completely, like blocks in a box. 10.F _l_e_x_ib_i_li_ty_is used as an attribute of various types of systems.Unit 5 EXERCISE 4 Translate the Chinese parts given in the brackets into English. 1 . O u r r a n g e i n c l u d e cso m p r e s_s_ed_ _ai_r _n_oz_z_le s  o f b_ot_h_ z_in_c_ a_n_d _s_ta_in_le_s_s _s_te el    (锌和不锈钢气压喷嘴). 2. Tool wear and breakage of the micro-milling tool is an important problem        __fo_r_ h_i_g_h_ s_p_e_e_d_ m__a_c_h_in_i_n_g_ o_f_ h_a_r_d_e_n_e_d_ s_te_e_l_ d_i_e_ a_n_d_ _m_o_u_l_d__(对硬化钢模具的 高速加工). 3. Efficient production of the most diverse injection-molded parts _d_e_p_e_n_d_s _m_a_i_n_ly_ _o_n_ t_h_e_ i_n_je_c_ti_o_n_ m__o_ld_(首先取决于注射模具). 4. T h e C__o_n_ti_nu_i_n_g_ d_e_v_e_l_o_p_m_e_n_t_ o_f_ in_j_e_c_ti_o_n_ m__o_ld_ t_e_c_h_n_o_lo_g_y_ (注射模具技 术的不断发展) demands more and more of the processes. 5 . C o n t r a r y t o t h e u s u a l m o l d d e s i g n , t h i s t o o l h a s ___ _a_n_ a_d_d_i_ti_o_n_a_l m__o_ld_ _p_a_rt_in_g_ _li_n_e_______ (一个附加的模具分型线) for the star-shaped runner. Unit 5 Reading B Basics of Injection Molding Injection molding (British: molding) is a manufacturing technique for making parts from both thermoplastic and thermosetting plastic materials in production. Molten plastic is injected at high pressure into a mold, which is the inverse of the product's shape. After a product is designed, usually by an industrial designer or an engineer, molds are made by a moldmaker (or toolmaker) from metal, usually either steel or aluminium, and precision-machined to form the features of the desired part. Injection molding is widely used for manufacturing a variety of parts, from the smallest component to entire body panels of cars. Injection molding is the most common method of production, with some commonly made items including bottle caps and outdoor furniture. (See figure 5-8)Unit 5Unit 5 1. Ejector Stopper (Stroke End Pin Figure 5-9) A block that stops an ejector plate from going forward [ stop pin] 2. Ejector Plate (Figure 5-10) Ejector Plate is also called a push plate. A plate supports an edge of an ejector pin or a push back pin to eject a part from a mold. It is ejected by an ejector device of a molding machine, and returned to the original position when the edge of a push back pin collides with a cavity plate during mold clamping.Unit 5Unit 5 3. Stop Pin (Figure 5-11) A stopper installed to keep an ejector plate horizontal or prevent the ejector plate from retreating too far and damaging a core adaptor plate. 4. Push Rods (Figure 5-12) A shaft linked to the force (hydraulic or mechanical) of the molding machine in order to get the ejector plate to work.Unit 55. Ejector Guide Pins / Ejector Guide Bush (Figure 5-13)An ejector guide pin is also called a push plate guide pin and functions as a guide for sliding of an ejector plate.Because an ejector guide bush slides, a hard material is used. An ejector guide bush is also called a push plate guide bush. It is a cylindrical part used to determine the position by matching the ejector guide pin.6. Gas Spring / Gas Spring Holder (Figure 5-14)A gas spring forcibly pushes back an ejector plate. The strength of the spring is adjusted by adjusting the filling pressure.Unit 5 When using a gas spring, make sure to avoid high temperature (heat
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