Molding method of integral type bibcock waterway inner core

Abstract

The invention discloses a molding method of an integral type bibcock waterway inner core, which comprises the following steps: (1) a main body with two water entry channels, at least one water effluent channel and at least one intermediate fluid channel is integrally formed through once injection by means of a once-injection mold and a mandril in a position corresponding to the position of the mold, wherein the intermediate fluid channel is perpendicular to the two water entry channels, and the external ends of the channels are respectively provided with a water inlet, a water outlet and a core loosing hole; and a plug for sealing the core loosing hole is formed in an injection molding mode by means of a plug mold; (2) the plug and a seal ring are arranged in the core loosing hole of the main body to form an insert for secondary injection molding; and (3) the insert is placed into the mold for secondary injection molding; a cladding layer for maintaining the relative position of the plug and the main body is coated on the insert through secondary injection molding; and the integral type bibcock waterway inner core is obtained after demoulding. The bibcock inner core body processed and molded according to the method of the invention has firm structure, is convenient to install and use, prolongs the service life of a bibcock, and has less possibility of leakage.

Description

technical field [0001] The invention relates to faucet manufacturing technology, in particular to a forming method of an integrated faucet water channel inner core. Background technique [0002] Most of the faucets used in household nowadays are faucets with cold and hot water inlet pipes and mixed water outlets. The inner core body structure of the faucet is composed of two vertical pipes and a horizontal pipe connecting the two vertical pipes. The middle part of the horizontal pipe is the mixed water outlet. To match the regulating valve. [0003] The current faucet body is mostly made of metal copper integral casting. The metal has the characteristics of high strength and can meet the strength requirements of installation. However, the current resources are relatively scarce, and the price of metal remains high, resulting in relatively high material cost for the faucet inner core body. high. In addition, the core body of the faucet is a structure formed by three parts o...

AI Technical Summary

Problems solved by technology

[0003] The current faucet body is mostly made of metal copper integral casting. The metal has the characteristics of high strength and can meet the strength requirements of installation. However, the current resources are relatively scarce, and the price of metal remains high, resulting in relatively high material cost for the faucet inner core body. high

In addition, the core body of the faucet is a structure formed by three parts of the three-way pipe. It is difficult to process if one-time molding (faucet water channel is integrated), so it is usually formed by disassembling parts and then welded (faucet water channel It is separated and re-welded), but there are two deficiencies in the decomposition and molding: first, it is necessary to ensure that the two vertical pipes are arranged in parallel in the same plane, and at the same time, the two vertical pipes must ensure the inclination angle with the water outlet on the horizontal pipe. It is difficult to grasp during the secondary processing; second, the welding positions of the joints of each part are mostly stress concentration positions, that is, when the faucet is installed on the washstand, the direction of force applied by the locking parts will cause tension between the vertical pipe and the horizontal pipe. The torsional force, or the direction of the operating force on the faucet during use, will also cause a torsional force between the vertical tube and the horizontal tube. The existence of these two factors can easily cause the structure of the inner core of the faucet to break at the welding position And affect the service life of the faucet

[0005] Although this molding method solves the problem that the inner core body of the faucet is easily broken at the welding position and affects the service life of the faucet caused by welding, the water channel of the faucet is still not integrally formed. The epitaxial ribs are fixed on the secondary injection mold. When the joint force of the joint surface of the secondary injection molding of the two parts is not good, the leakage of the joint surface will occur through the exposed rib structure. This leakage is still Can not meet people's use requirements, causing the entire product to be scrapped

Images