CN205553139U - Extrusion die - Google Patents

Abstract

An extrusion die, which includes a front template and a rear template, the rear template is equipped with a mold core, a feed hole is provided on the side of the rear template, and a symmetrical double feeding hole is provided at the front of the rear template The front template is provided with a feeding die, and the front template and the rear template are positioned by positioning pins, so that the front template and the rear template can only slide forward and backward; the positioning pins are provided with air holes, the The air inlet hole is connected to the air outlet hole on the mold core through the rear template; the front template and the rear template are fixedly connected by screws; it has a simple structure, convenient processing, and the two extruders do not interfere with each other during extrusion. Good adjustability, low reject rate and high production efficiency.

Description

extrusion die

technical field

The utility model relates to an extrusion die with a new structure, in particular to a die for double compound extruded rubber products, which belongs to the technical field of dies.

Background technique

Existing double-composite rubber sealing strip products generally use twin-screw double-compound extruders during extrusion and vulcanization production, but this type of machine is expensive, and the rubber properties of such rubber composite products are quite different. The requirements of the double compound extruder are also high, the control is inconvenient during production, and the production efficiency is low.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a simple structure, convenient and reliable processing and use, through the transformation of the existing mold, two separate single-screw extruders can be used to produce double compound extruders. It is an extrusion die with low investment, controllable and convenient production, and high production efficiency.

In order to solve the above-mentioned technical problems, the utility model mainly adopts the following technical solutions: an extrusion die, which includes a front template and a rear template, the rear template is assembled with a mold core, and the position of the side of the rear template is A feeding hole is provided, and symmetrical double feeding grooves are arranged at the front of the rear template, and the front template is provided with a feeding die, and the front template and the rear template are positioned by positioning pins, and the front template and the rear template Can only slide forward and backward.

As a preference: the positioning pin is provided with an air inlet hole, and the air inlet hole is connected to the air outlet hole on the mold core through the rear template; the front template and the rear template are fixedly connected by screws.

The utility model utilizes the existing extrusion die to process a feeding hole on the side of the rear template and a symmetrical double feeding groove at the front. The front template remains unchanged, and the front and rear templates are positioned with positioning pins and fixed with screws. Air holes are processed on the positioning pins and connected to the air outlet holes on the core. During production, one kind of rubber material is squeezed in from the back, and another kind of rubber material is fed from the side of the rear formwork, enters the mold through the feeding groove, and is finally extruded into shape. The air outlet hole enters the interior of the product to achieve the purpose of assisting in shaping.

The utility model has the characteristics of simple structure, convenient processing, no interference between two extruders during extrusion, good adjustability, low reject rate, high production efficiency and the like.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Figure 2 is a schematic top view of Figure 1

detailed description

The utility model will be further described below in conjunction with the accompanying drawings. As shown in Fig. 1-2, a kind of extrusion mold described in the utility model comprises a front template 1 and a rear template 2, and the rear template 2 is assembled on the mold core, and the side position of the rear template 2 is set There is a feeding hole 5, and the front portion of the rear template 2 is provided with symmetrical double feeding grooves, and the front template 1 is provided with a feeding mouth die 6, and the front template 1 and the rear template 2 are positioned by positioning pins 3, and The front template 1 and the rear template 2 can only slide forward and backward.

As shown in the figure, the positioning pin 3 is provided with an air inlet hole, which is connected to the air outlet hole 4 on the mold core through the rear template; the front template 1 and the rear template 2 are fixed by screws 7 connect.

Embodiment: A kind of new structure extrusion die described in this embodiment, it utilizes independent single-screw extruder to be used for producing double composite extruding product, as shown in Figure 1, die comprises front template 1 and back template 2 , a feeding hole 5 is processed on the side of the rear template and a symmetrical double feeding groove is processed on the front. Sliding, and at the same time process air holes on the positioning pins, connect to the air outlet 4 on the core, and the front and rear templates are fixed by screws 7.

When in use, the front and rear templates are fixed by positioning pins and screws, and put into the position of the die of the extruder. One kind of rubber material is squeezed in from the back and directly passes through the die of the front template, and the other rubber material enters from the side of the rear template. The material is fed into the mold through the feed trough, and finally extruded into shape. At the same time, the external compressed air enters the product through the air outlet hole on the core to achieve the purpose of auxiliary shaping. In this process, the two extruders do not interfere with each other and can be adjusted independently. The whole process is easy to operate, low in investment, high in production efficiency, stable in quality, and good in process realization.

The mold includes front and rear templates, a feed hole processed on the side of the rear template and symmetrical double feed grooves processed at the rear, the front template remains unchanged, and the rear template is assembled with a mold core.

Positioning pins are installed on the rear formwork of the mold, through which the positional connection with the front formwork is achieved and fixed by screws.

Air inlet holes are processed on the positioning pins of the mold, and are connected to the air outlet holes on the core through the rear template, so that it can be ventilated smoothly.

When the mold is working, it can independently set the process of two independent extruders without interference, so as to achieve the purpose of better product quality.

In the description of the present utility model, the technical terms "up", "down", "front", "rear", "left", "right", "inside", "outside" etc. indicate that the direction or positional relationship is based on the attached The direction or positional relationship shown in the figure is only for the convenience of describing and understanding the technical solution of the present utility model. The above description does not limit the present utility model, and the present utility model is not limited to the examples described above. Changes, modifications, additions or substitutions made by personnel within the essential scope of the present utility model should be regarded as the protection scope of the present utility model.

Claims (2)

1. An extrusion die, which includes a front template (1) and a rear template (2), the rear template (2) is assembled on the mold core, and it is characterized in that the side position of the rear template (2) is set There is a feeding hole (5), and the front part of the rear template (2) is provided with symmetrical double feeding grooves, and the front template (1) is provided with a feeding die (6), and the front template (1) and The rear template (2) is positioned through the positioning pins (3), and the front template (1) and the rear template (2) can only slide forward and backward. 2. The extrusion die according to claim 1, characterized in that the positioning pin (3) is provided with an air inlet, which is connected to the air outlet on the mold core through the rear template (2) ( 4); the front template (1) and the rear template (2) are fixedly connected by screws (7).