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Replacing non-standard parts with standard parts A few non-standard parts on the hot box can be modified by standard parts to simplify the production of parts, shorten the production cycle and reduce the production cost. For example, the upper top core rod used in the horizontal split box has a conventional structure as shown in a, and the manufacturing process is cumbersome, the cycle is long, and the cost is high.
With the structure shown by lb, it can be modified by two standard parts to overcome the shortcomings of the structure shown by h. (a) Traditional structure (irrational) (b) New structure (reasonable) Horizontal structure of the top core rod on the hot box of the box 1. M16 nut 2. Reformed with bolt M16 only 70. Reasonable factory standard parts Applying more accessories on the hot box (except for non-standard parts outside the core box) can be designed as a series of factory standard parts, which can be supplied at that time.
This is especially important for some professional foundries and foundries that use a large number of hot core box core processes. This not only simplifies the design and manufacture of the hot core box, but also enables the design and manufacture of the hot core box to achieve a rapid effect to a certain extent.
The parts of the hot box accessory that can realize the "factory standard parts" are roughly classified into the following categories: (1) the box pin, the box pin sleeve and the pressure plate, and the lengthened box pin. (2) The upper and lower top core plates of the horizontal box hot box, the bottom frame of the core drop core shooting method, and the moving frame of the core core type core shooting machine. (3) Open box, bracket, etc. of multi-opening hot box. (4) The top core of the upper core core type core shooting machine (such as GSR2) returns to the "T-shaped groove (block)" and its guide rod. (5) The left and right top core plates of the vertical box. (6) The lower top core rod of the horizontal sub-box, the return guide rod, and the open box rod for the GSRZ core shooting machine for multi-opening.
For (1) Class 1 (5) parts, it is entirely possible to design and manufacture a series of "factory standard parts" for use in the design of the hot box. For the type (6) parts, because the size and length of the diameter are affected by the main body of the hot box, it is necessary to be determined according to the specific conditions of each hot box. It is difficult to meet the actual situation with the type of the standard part. For such parts, the samples (which may also include (1) one (5) parts) are designed as standard parts; 2 to 3 dimensions are symbolized, and then listed in the form of spaces Fill in the actual conditions of each hot box.
According to the above method, after the establishment of the factory standard parts (sample) of the hot box, the design and production speed of the hot box can be simplified and accelerated, and the cost of the wood mold can be reduced by the hot box manufacturing factory. The purpose of production costs. Reasonable application of universal parts In the design of hot box, in addition to the use of standard parts, standard parts and factory standards as much as possible, as far as possible, "non-standard parts" on similar core shooting machines should be as much as possible. Use "universal parts" to make as many common parts as possible on the same type of core or similar products (castings) instead of special parts.
For example, our 6105 and 6108 six-cylinder crankcase sand core core boxes and front and rear end face hot core boxes, each set of hot core boxes make two different sand cores, these hot core boxes (eight sets in total) only It is shot on two 2ZZ8640A hot core box core shooting machines, and its upper core plate and water-cooled sand shooting plate can be used universally. In the design and manufacture of the hot core box, it is required to achieve its versatility. As a result, the two core shooting machines meet the core requirements of the larger batch of crankshaft cores of two different cylinder blocks.
Due to the versatility of the upper core plate and the water-cooled sandblasting plate, the replacement of the hot core box is fast. Not only that, but our factory also has a 4ZZ8640A core shooting machine for the hot core box of the front and rear end faces of the four-cylinder cylinder block (4110). It also achieves the top core plate and water cooling with the front and rear end faces of the 6105 and 6108 cylinder blocks. Shooting sand board.
This not only reduces the workload of the hot box production plant, reduces the production cost of the mold, but also improves the core making efficiency of the core shooter, which is a multiplier. In order to achieve the effect of the above-mentioned cylinder core type castings corresponding to the sand core hot box "shared" upper core board and water-cooled core board, one of the key technical skills is that the sand core adopts a smooth arrangement.
Water-cooled sandblasting board production process and materials For the problem of horizontal split box hot box universal parts, there is also a more important component - the production process and materials of water-cooled sandblasting board are worth discussing. The traditional materials and processes for this part are cast iron. In fact, the part is made of cast iron, which is not only costly, has a long cycle, but also has poor versatility.
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