39results about How to "Avoid scrap rate" patented technology

The invention relates to an integrated molding and pouring process for semi-enclosed glass fiber reinforced plastic products with infolded flanges. The process comprises the steps of: first, producing a mould, wherein the mould consists of a main body part and a flange part, a positioning and locking part is embedded at the side of the main body part in advance; the flange part is provided with a locking structure corresponding to the position of the positioning and locking part, and is fixed on the main body part by the positioning and locking part; second, paving a product framework on the inner wall of the mould; third, paving one sealing film layer on the surface of the framework, wherein the edge of the sealing film extends out of the cavity of the main body part of the mould, rounds the flange part, and is adhered on the peripheral face of the edge of the main body part of the mould with sealing adhesive tape, on the part fixedly provided the flange part, then, a hermetical space is formed between the main body part of the mould and the sealing film, the product framework and the flange part of the mould are encapsulated in the hermetical space, and the clearance between the mating faces of the main body part and the flange part is not communicated with the atmosphere; fourth, processing a suction port and a pouring port, which are respectively connected with a vacuum pump and a pouring device, on the sealing film; fifth, vaccumizing and pouring resin; and sixth, demoulding.

The invention discloses a production process of an aluminum sheath cable, relating to the field of communication and signal cable production. The traditional high-frequency welding process is difficult to avoid the problems of pin holes and tack weld, and the standard length of each weldment is only 6 m; in order to weld an aluminum sheath cable, the length of which can reach thousand meters, the invention provides the production process for welding the aluminum sheath cable by the following steps: firstly shaping by a sheath and then welding at high frequency, wherein the thickness of an aluminum tape is 0.5-2.5 mm, the diameter of the aluminum sheath is 10-70 mm, the welding depth is 0.3-2.0 mm, the welding meeting angle is 4-12 degrees, the frequency of induced current is 350-500kHz, the welding power is 100-200kW and the welding speed can approach 100m / min; heating the aluminum sheath cable to be in a molten state at the edge of the meeting angle; then combining contact surface molecules by the extrusion of both side extruding devices to form crystal so as to achieve the goals of no pin holes, no tack weld and even welding; and finally reducing and shaping. The invention has the advantages of simple process, reliable quality, low cost, high production efficiency and little energy consumption.

The invention discloses a process for machining a molding core. The method comprises the following steps: clamping a molding core blank, machining a first reference plane of the molding core at one end of the molding core, and machining a cylindrical process terminal on the end face of the first reference plane; clamping the molding core with the first reference plane as reference, machining an inner cavity of the molding core, and machining a second reference plane at the other end of the molding core; clamping the molding core with the second first reference plane as reference, supporting the tail end of the process terminal with a core clamper, machining an outer profile of the molding core, and finally cutting the process terminal to complete the machining of the molding core. The process machines the molding core by use of the two reference planes on the molding core, so as to prevent the radial run out of the molding core during the machining of the outer profile, ensure the coaxiality of the inner cavity and the outer profile of the molding core, improve the machining precision of the molding core and avoid rejection of the molding core during machining.

A seamless welded tube and a manufacturing method therefor. The tube comprises a tube body (1). The tube body (1) comprises an inner film (11) and an outer film (12) that are stacked together. The inner film (11) and the outer film (12) are alternately compounded together and respectively form right-angle stepped ports at two ends in the circumferential direction of the tube body (1). The outer surface (111) of the inner film (11) at one of the ports is exposed outside of the outer film (12), while the inner surface (121) of the outer film (12) at the other port is exposed outside of the inner film (11). The inner surface (121) of the outer film (12) that is exposed is lap-welded onto the outer surface (111) of the inner film (11) that is exposed. Also, the two ends in the circumferential direction of the outer film (12) are welded together, while the two ends in the circumferential direction of the inner film (11) are welded together. The manufacturing method comprises: the steps of thin-film manufacturing, thin-film compounding, winding for tube formation, and welding. The inner film (11) and the outer film (12) are alternately compounded together during thin-film compounding. The manufacturing method for the multilayered seamless tube allows for reduced difficulty in a printing process. The tube is smooth and seamless at where same is welded. The tube is provided with an aesthetic overall appearance. In addition, the need for cropping to acquire the right-angle stepped ports is obviated, the manufacturing process flow is simple, and the manufacturing costs for the tube are reduced.

The invention belongs to the technical field of vision detection, and particularly relates to a method for detecting a tire label position in a tire vulcanization producing process. The method comprises the steps that 1, a target is designed; 2, a label placement range template is designed; 3, the target is fixedly installed on the outer edge of a vulcanizing machine film cavity; 4, the position of the target and the position of the label placement range template are demarcated; and 5, the tire label position is detected in practical production. By means of the method, the problem that the label position is inaccurate due to the fact that the position of the vulcanizing machine film cavity is changed in a vulcanizing process is solved, the rejection rate is avoided, and working efficiency is improved.

The invention provides an installation method for a refrigerator door body, and further provides the refrigerator door body assembled adopting the installation method and a refrigerator with the refrigerator door body accordingly. The installation method comprises the steps that a display screen is loaded into a display-screen embedded box to form a display-screen installation component; the display-screen installation component is installed on a door body panel of the refrigerator door body; the door body panel provided with the display-screen installation component is installed on a door body frame of the refrigerator door body to form a combination body of the door body panel and the door body frame; and the combination body is placed into a foaming mould to be subjected to door body foaming to complete the installation of the refrigerator door body. According to the installation method for the refrigerator door body, the refrigerator door body assembled adopting the installation method and the refrigerator with the refrigerator door body, by means of the manner that the display screen is placed into the display-screen embedded box before the door body foaming procedure is performed, thus the procedure of installation and disassembly of foaming tooling in related technologies is omitted, the installation procedure of the refrigerator door body is simplified, and dirty hard to clean generated on the display screen is further effectively avoided and the possibility of scratching the door body panel is eliminated.

In order to overcome the problem that an existing plug-in machine is easy to cause pin dislocation during plugging-in of a slot component, the invention provides an internal contraction type plug-in method. The internal contraction type plug-in method comprises the following operation steps: providing an internal contraction type clamping jaw, wherein the internal contraction type clamping jaw is fixed on a machine hand, and the internal contraction type clamping jaw comprises a first clamp and a second clamp; in an X-axis direction, setting a first convex part on the first clamp, and setting a second convex part on the second clamp; transporting the slot component to a preset position; controlling the internal contraction type clamping jaw in a contraction state by the machine hand, inserting the first convex part and the second convex part in inserting grooves of the slot component, controlling the expansion of the internal contraction type clamping jaw by the machine hand, inserting the first convex part and the second convex part into lifting lugs, and fixing the slot component; and moving the slot component to a plug-in on a PCB. According to the internal contraction type plug-in method, stress deformation and self-deflection of the slot component can be avoided, the plug-in precision is effectively improved, and the rejection rate is reduced.

The invention relates to a manufacturing method of an urban subway window beam, and belongs to the field of mechanical processing and manufacturing methods. According to actual production, the methodcomprises a plurality of steps of processing and adjusting a window beam workpiece, and the conditions, methods and processing sequence of a production process of the window beam workpiece are improved again, so that the window beam workpiece which conforms to the drawing standard is manufactured. According to the manufacturing method, standard process parameters and normalized operating processesare given, so that standard mass production of the window beam workpiece can be realized, and a plurality of inherent defects such as defects of the forming quality of the window beam, the rejectionrate of the window beam workpiece and high productive labor intensity and low working efficiency caused by unreasonable processes of an existing manufacturing process of the window beam are avoided.