CN102814943A - Automatic traceless degating injection mold - Google Patents

Abstract

An automatic non-trace gate removal injection mold includes: a mold cavity, a product, a gate cutter, a core, a gate cutter fixing plate, a gate cutter ejector plate, a fixed template, and an oil cylinder. The gate cutter is fixed on the gate cutter fixed plate, and the gate cutter fixed plate is installed on the gate cutter ejector plate, and the gate cutter ejector plate is connected with the oil cylinder, and the oil cylinder is installed under the movable template . The injection mold can automatically remove gate waste for the most commonly used side gate, and the gate is removed in the state of plastic melting, which can be completely traceless. In the case that there is no trace of the gate, the gate can be made larger to speed up the filling speed of injection molding, which can reduce labor intensity, improve production efficiency, and improve product quality in many ways.

Description

Automatic No Trace Degating Injection Mold

technical field

The invention relates to an automatic non-trace degating injection mold, which belongs to the field of mechanical tooling moulds. the

Background technique

At present, plastic products have been more and more used in people's daily life. Plastic products are generally molded by injection molding during production, and runner waste is generally removed after molding. At present, there are generally two ways to remove the runner waste: one is to manually strip the runner waste after the injection molding is completed; the other is to automatically remove the runner waste through the mold, such as spot gate and latent gate. No matter which method is used, it is removed after the product is cooled, leaving gate marks on the product. Moreover, manual removal of runner waste is labor-intensive and the production efficiency is low. Automatic removal can only be aimed at point gates and latent gates, but there is currently no better automatic degating method for the more commonly used and simple side gates. the

Contents of the invention

The object of the present invention is to provide an automatic non-trace degating injection mold aiming at the disadvantages of high labor intensity, low efficiency and leaving traces in the existing degating method. The technical solution adopted in the present invention is: a gate cutter is arranged below the commonly used side gate, and the inclination angle is the same as the draft angle of the product. The gate cutter is driven by an oil cylinder. During normal injection molding, the gate cutter and the cavity form a side gate. After injection and pressure holding, the gate cutter is driven by the cylinder while the plastic is still in a molten state Move up and down to close the gate, and at the same time, the nozzle of the injection machine moves back a little distance to absorb the plastic extruded from the gate. After cooling and shaping, the finished product and runner waste are ejected separately. Since the gate is cut off in the state of plastic melting, there will be no traces at the gate after cooling. the

The structure of the present invention includes: a mold cavity, a product, a gate cutter, a core, a gate cutter fixing plate, a gate cutter ejector plate, a fixed template, and an oil cylinder. the

The gate cutter is fixed on the gate cutter fixed plate, and the gate cutter fixed plate is installed on the gate cutter ejector plate, and the gate cutter ejector plate is connected with the oil cylinder, and the oil cylinder is installed under the movable template . the

The beneficial effect of the invention is that the injection mold can automatically cut off gate waste for the most commonly used side gate, and the gate is removed in the state of plastic melting without traces. In the case that there is no trace of the gate, the gate can be made larger to speed up the filling speed of injection molding, which can reduce labor intensity, improve production efficiency, and improve product quality in many ways. the

Description of drawings

Fig. 1 is a structural diagram of the present invention;

In the figure: 1. Cavity, 2. Product, 3. Gate cutter, 4. Core, 5. Gate cutter fixing plate, 6. Gate cutter ejecting plate, 7. Fixed template, 8. cylinder.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments. the

The structure of the present invention includes: a mold cavity, a product, a gate cutter, a core, a gate cutter fixing plate, a gate cutter ejector plate, a fixed template, and an oil cylinder. the

The gate cutter is fixed on the gate cutter fixing plate. During injection molding, the cutter and the cavity form a side gate. If the product has a slope, the cutter moves in the same direction as the product slope and passes through the core. guide. The gate cutter fixed plate is installed on the gate cutter ejector plate, and the gate cutter ejector plate is connected with the oil cylinder, and the oil cylinder is installed under the movable template. After the product is injected, it sends a signal to the oil cylinder after the pressure is maintained, so that the oil cylinder drives the cutter to move upwards, and at the same time sends a signal to the injection molding machine to make the nozzle move back a certain distance, so that the plastic at the gate is squeezed back to the injection head. In this way, the gate is cut off, and then the oil cylinder returns to its position to repeat the next action. the

the

Claims (1)

1. An automatic non-trace degate injection mold, characterized in that the mold structure includes: cavity, product, gate cutter, core, gate cutter fixing plate, gate cutter ejector plate , fixed template, oil cylinder; The gate cutter is fixed on the gate cutter fixed plate, and the gate cutter fixed plate is installed on the gate cutter ejector plate, and the gate cutter ejector plate is connected with the oil cylinder, and the oil cylinder is installed under the movable template .

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