Manufacturing method of plastic bottle cap mold

Haichuan Mould Factory is a high-precision mould enterprise specialized in designing, developing and producing bottle caps.

 Haichuan Precision Mould is specialized in manufacturing: Flip-top Flip Mould for oval bottles, Flip-top Flip Mould for Juice Bottles, Flip-top Flip Mould for Detergent Bottles, Flip-top Flip Moulds for Button Bottles, Flip-Flip Flip Bottles for Push-in Bottle Mould, Flip-top Flip Mould for Insert Bottles, Flip-Flip Mould for Insert Bottles, Flip-Flip Mould for Positioning Type, Flip-Flip Mould for Two-Color Bottles, Stripe-Edge Flip-Flip Mould for Bottles, Perforated Bottles Clamshell mold with flip cap, clamshell mold for split bottle, clamshell mold for plastic bottle, butterfly clamshell mold for deep screw, clamshell mold for bottle with clamshell type, clamshell mold for flat bottle Moulds, clamshell molds for oval bottles, clamshell molds for snap bottles, clamshell molds for push-in bottles, clamshell molds for positioning bottles, clamshell molds for two-color bottles, shaped bottles Clamshell mold with flip cap, bottle clamshell mold with tear-type flip cap, clamshell mold with stripe edge bottle, etc.

Flip-top flip mold for high-grade plastic bottles, broken hinged flip-clip flip mold, push-pull push-top flip-clip mold, flip-top flip-clip mold with holes on top, split-flow decompression flip-clip mold with holes, oval flip-clip Mold, hinge thread flip clamshell mold, split clamshell clamshell mold, top round push-up clamshell clamshell mold, vitamin bottle clamshell clamshell mold, etc. It has high elasticity, high elasticity, easy opening, high sealing, and precise alignment. The lower cover of the flip cover is vertically and seamlessly connected with the upper cover. The bottom edge of the lower cover is demoulded in the form of rotating teeth. The internal thread of the flip cover is protected from damage and the vertical upper cover is easy to cooperate with the bottle shin.

The manufacturing process of the light body butterfly clamshell for the bottle clamshell is described as follows: we start the operation according to customer samples and drawings, and we need to insert a core hole on the template for coordinate boring, and a pusher insert on the pusher board. After vacuum quenching, the inner and outer circles are ground. The insert holes on the core plate are processed by a coordinate boring machine, and the imported bearings from Germany and Japan are placed for precise positioning, and then the core is added to match. The gear on the core Made by wire cutting and precision machining, accurate positioning without eccentricity; gears are vacuum hardened for durability; the core steel is made of Swedish precious metal, after vacuum heat treatment, after cylindrical grinding and finishing, the core teeth are ground and shaped, and the teeth The depth and slope are very accurate. In addition, after the teeth are ground and shaped, the teeth of the formed products are extremely fine and shiny like mirror polishing.

Several problems encountered in the design and manufacture of bottle cap molds. Good mold design should have good part manufacturing technology. For the designed parts, it is also important to choose the best process method. Example for analysis. 1 Semicircle processing of bottle cap mold slider Figure 1 shows 2 lateral semicircle sliders that cut off the anti-counterfeit ring in the injection mold of the bottle cap, and 2 semicircles should be programmed for processing. 2 sliders are processed once It is forbidden to cut the whole circle directly. One is the centering error when cutting, and the other is the molybdenum wire. The discharge gap will affect the integrity of the circle. The paired semi-circular sliders are often programmed and processed. The reason is the outermost layer vulcanization. The surface of the product is squeezed by the inner unvulcanized layer, which causes the surface layer to crack. There are many ways to solve it. Changing the vulcanization system from the formulation side can be solved, but the vulcanization speed is slow, which may make the physical properties unattainable. By the standard, the fluidity of the material is poor, and voids are formed at the confluence due to the accumulation of gas, which can not be completely fused. At present, the mold designer, through the use of computer /, and other analysis software, parameters such as pressure, temperature, and gate position in the molding, However, simulations such as time have greatly reduced the number of mold repairs and the rejection rate. It is expected that in the future, it may be possible to observe the change in the viscosity of the rubber during the injection cycle through the connection of testing instruments such as viscometers, ultrasonics, and visualization devices. Temperature change, vulcanization situation, glue burning situation, etc., solve the above problems. Integral slider and split slider For one-mold multi-cavity bottle cap mold, the lateral slider can be integrated or split. The integral type is easy to manufacture, one time The clamping can be processed, but the interchangeability is poor. If one or even one of the semi-circular sliders is damaged, all of them will be scrapped. Although the manufacturing of the split type is slightly more complicated, the interchangeability is good and the assembly is easy.

 In the split and integral slider 3 cylinder and conical threaded core bottle cap molds, the threaded core is a male mold, which is fixed on the template and cooperates with the concave mold to form the bottle cap. The core and the fixed template use a tapered surface. Automatic centering makes it easy to ensure that the wall thickness of the cap is uniform. If a cylindrical core is used, the coaxiality between the core and the fixed template hole is difficult to guarantee due to the matching gap, and it is not possible to ensure concentricity with the die and the wall thickness of the cap Uneven.

 Conical thread core 1. Template 2. Slider 3. Die 4. Threaded core 4 Threaded core. Thread processing of bottle cap threads. If designed as a complete form of full-circle thread, the thread on the core can be turned at one time It is very simple. However, because the cap is often used to remove the cap, the entire circle of threads is equivalent to the rib, which is not conducive to the deformation of the cap when it is strongly disengaged, so it is now rarely used. At present, the common cap threads have broken thread. Segmented thread, three-threaded thread form (expanded view); broken thread; segmented thread; broken thread of three-threaded core are all processed by EDM. First, the process plan is determined, and the thread number is divided along the circumference. Each electrode is machined with a different electrode, and the dotted line is the copper electrode outline. The second is the electrode production. The threaded hole is machined with a turning tool or a tap in the middle of a round copper billet. The thread parameters are the same as those of the bottle cap. When the block is cut and numbered, the core is clamped on the index plate and processed with the corresponding numbered copper electrodes in sequence.