CN205009499U - A plastic mold capable of rapid heating and cooling - Google Patents

Abstract

The utility model discloses a can rapid heating and refrigerated plastic mold, it installs the upper end at the plastic mold body to go up the fixed die plate, the hole of moulding plastics sets up the middle part at last fixed die plate, the position circle sets up the both sides in the hole of moulding plastics, take off the flitch and install the below at last fixed die plate, draw the silo to set up the middle part at taking off the flitch, electric heater installs the both sides at drawing the silo, temperature sensor sets up the right side at the die cavity, controlling means installs the left side at the plastic mold body, low temperature power device installs under on the fixed die plate, electric heater and temperature sensor are all through connecting wire and controlling means electric connection, low temperature power device pass through the connecting wire respectively with controlling means and cooling tube electric connection. The plastic mold has the characteristics of reasonable structural design, safety in use, time saving and the like, and can greatly improve the production efficiency and the product quality.

Description

A plastic mold capable of rapid heating and cooling

technical field

The utility model belongs to the technical field of plastic molds, in particular to a plastic mold capable of rapid heating and cooling.

Background technique

With the rapid development of the plastics industry and the continuous improvement of general and engineering plastics in terms of strength and precision, the application range of plastic products is also expanding, and the proportion of plastic products is increasing rapidly. A well-designed plastic part can often The use of plastic products is also on the rise in place of multiple traditional metal parts. The sustained and rapid development of China's economy has provided a broad space for the development of the mold industry. The level of mold technology largely determines product quality, efficiency and new product development capabilities.

Injection molding is a processing method used in the mass production of certain parts with complex shapes. Specifically, it refers to injecting heated and melted materials into a mold cavity under high pressure, and after cooling and solidifying, molded products are obtained. Injection mold is a tool for producing plastic products, which gives plastic products complete structure and precise dimensions. Existing injection mold is made up of two parts of moving mold and fixed mold, and moving mold and fixed mold are closed enough to pour system and mold cavity successfully during injection molding, and moving mold and fixed mold are separated so that take out plastic product when mold is opened. However, due to the ever-changing shapes and structures of plastic products, plastic products with complex shapes are often inconvenient to open the movable mold and fixed mold. Injection molding cannot be completed in one step, and the injection molding accuracy can only be reduced. The shape requirements are achieved through subsequent processing, which is not conducive to enterprises. At the same time, the characteristics of various plastics are different. In order to prevent the deformation of plastic parts after demoulding, shorten the molding cycle and reduce the crystallinity, when different plastics are injected, the mold must be kept at an appropriate temperature. In the prior art, the controllability of mold heat preservation and forced cooling heat transfer rate is poor. Optimizing the forced cooling rate of the mold is of great significance to improve injection molding efficiency and product quality.

Utility model content

The purpose of this utility model is to provide an automatic material mixing device for a twin-screw extruder to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: including positioning ring, upper fixed formwork, stripper plate, cavity plate, temperature sensor, core plate, low temperature power device, lower fixed formwork, bottom plate, sprue sleeve, Injection holes, material guide grooves, electric heaters, mold cavities, cooling pipes, control devices, plastic mold bodies, the upper fixed template is installed on the upper end of the plastic mold body, and the injection holes are arranged in the middle of the upper fixed template. The positioning ring is arranged on both sides of the injection hole, the stripping plate is installed under the upper fixed formwork, the material guiding groove is arranged in the middle of the stripping plate, the cavity is arranged under the material guiding groove, and is connected with the material guiding groove Fixedly connected, the electric heater is installed on both sides of the lead trough, and is symmetrically distributed with respect to the lead trough, the sprue sleeve is arranged on both sides of the electric heater, and the cooling pipe is installed under the cavity, so The temperature sensor is arranged on the right side of the cavity, the core plate is installed under the cavity plate, the control device is installed on the left side of the plastic mold body, and the lower fixed template is arranged under the core plate, The low-temperature power device is installed on the lower fixed template, the bottom plate is arranged on the bottom of the plastic mold body, the electric heater and the temperature sensor are electrically connected to the control device through connecting wires, and the low-temperature power device is respectively Electrically connected to the control unit and the cooling pipe.

Preferably, the control device is composed of control keys, a power switch and a display screen. The control device is a programmable controller.

Preferably, a groove is provided on the joint surface of the cavity plate and the core plate, and a gasket is provided in the groove.

Preferably, the width and height of the electric heater are both equal to the width and height of the mold cavity.

Preferably, a heat insulating board is provided between the cavity plate and the core plate.

Compared with the prior art, the beneficial effect of the utility model is: the plastic mold capable of rapid heating and cooling is equipped with a temperature sensor on the right side of the cavity, which can further heat the molten material according to the temperature change and enhance the temperature of the material. Fluidity, improve the ability of the material to fill the cavity. When the molten material reaches the molding cavity, the temperature sensor can quickly cool the molded plastic according to the temperature change, shortening the cooling time of the plastic part; the plastic mold that can be heated and cooled quickly, It has the characteristics of reasonable structural design, safe use, time saving, etc., and can greatly improve production efficiency and product quality.

Description of drawings

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

In the figure: 1 positioning ring, 2 upper fixed template, 3 stripper plate, 4 cavity plate, 5 temperature sensor, 6 core plate, 7 low temperature power device, 8 lower fixed template, 9 bottom plate, 10 sprue sleeve, 11 Injection hole, 12 guide groove, 13 electric heater, 14 cavity, 15 cooling pipe, 16 control device, 17 plastic mold body.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The utility model provides an automatic mixing device for a twin-screw extruder as shown in Figure 1, including a positioning ring 1, an upper fixed template 2, a stripping plate 3, a cavity plate 4, a temperature sensor 5, and a core plate 6. Low-temperature power unit 7, lower fixed template 8, bottom plate 9, sprue sleeve 10, injection hole 11, material introduction tank 12, electric heater 13, cavity 14, cooling pipe 15, control device 16, plastic mold body 17, The upper fixed template 2 is installed on the upper end of the plastic mold body 18, the injection hole 11 is arranged in the middle of the upper fixed template 2, the positioning ring 1 is arranged on both sides of the injection hole 11, and the stripping plate 3 is installed Below the upper fixed template 2, the material guide trough 12 is arranged in the middle of the stripping plate 3, the cavity 14 is arranged below the material guide trough 12, and is fixedly connected with the material guide trough 12, and the electric heater 13 is installed On both sides of the lead trough 12, and symmetrically distributed with respect to the lead trough 12, the width and height of the electric heater 13 are equal to the width and height of the cavity 14, and the sprue sleeve 10 is arranged on the electric heater 13. On both sides of the cavity, the cooling pipe 15 is installed under the cavity 14, the temperature sensor 5 is arranged on the right side of the cavity 14, the core plate 6 is installed under the cavity plate 4, and the cavity A groove is provided on the bonding surface of the plate 4 and the core plate 6, a sealing gasket is provided in the groove, a heat insulation board is provided between the cavity plate 4 and the core plate 6, and the control device 16 is installed on the left side of plastic mold body 17, and described control device 16 is made up of control button, power switch and display screen. The control device 16 is a programmable controller, the lower fixed template 8 is arranged under the core plate 6, the low-temperature power device 7 is installed on the lower fixed template 8, and the bottom plate 9 is arranged on the plastic mold body 17. At the bottom, the electric heater 13 and the temperature sensor 5 are electrically connected to the control device 16 through connecting wires, and the cryogenic power device 7 is electrically connected to the control device 16 and the cooling pipe 15 through connecting wires.

Working principle: When the plastic mold capable of rapid heating and cooling is used, the control device 16 is first turned on, and the molten plastic is formed in the cavity 14 from the injection hole 11 through the introduction groove 12. When the molten plastic passes through the introduction groove 12 , the temperature sensor 5 can sense the temperature in the feed tank 12 in real time, when the temperature in the feed tank 12 is lower than the preset temperature, the control device 16 will automatically control the electric heater 13 to start heating, so that the temperature in the feed tank 12 remains constant , to enhance the fluidity of the molten plastic, when the molten plastic is stably molded in the cavity 14, the cryogenic power unit 7 will control the cooling pipe 15 to cool the molded plastic.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model, All should be included within the protection scope of the present utility model.

Claims (5)

1. A plastic mold capable of rapid heating and cooling, including a positioning ring (1), an upper fixed template (2), a stripper plate (3), a cavity plate (4), a temperature sensor (5), and a core plate (6), low temperature power unit (7), lower fixed template (8), bottom plate (9), sprue sleeve (10), injection hole (11), lead groove (12), electric heater (13), type Cavity (14), cooling pipe (15), control device (16), plastic mold body (17), it is characterized in that: described upper fixed template (2) is installed on the upper end of plastic mold body (18), and described injection molding The hole (11) is arranged in the middle part of the upper fixed template (2), the positioning ring (1) is arranged on both sides of the injection hole (11), and the stripping plate (3) is installed on the upper fixed template (2). Below, the guide trough (12) is arranged in the middle of the stripping plate (3), the cavity (14) is arranged below the guide trough (12), and is fixedly connected with the guide trough (12), the electric The heater (13) is installed on both sides of the feed trough (12), and is distributed symmetrically with respect to the feed trough (12), and the sprue bushing (10) is arranged on both sides of the electric heater (13), and the cooling The pipe (15) is installed under the cavity (14), the temperature sensor (5) is arranged on the right side of the cavity (14), and the core plate (6) is installed under the cavity plate (4) , the control device (16) is installed on the left side of the plastic mold body (17), the lower fixed template (8) is arranged below the core plate (6), and the low-temperature power unit (7) is installed on the lower fixed On the template (8), the base plate (9) is arranged on the bottom of the plastic mold body (17), and the electric heater (13) and the temperature sensor (5) are electrically connected to the control device (16) by connecting wires , the cryogenic power device (7) is electrically connected to the control device (16) and the cooling pipe (15) respectively through connecting wires. 2. A plastic mold capable of rapid heating and cooling according to claim 1, characterized in that: the control device (16) is composed of a control button, a power switch and a display screen, and the control device (16) is Programmable Controllers. 3. A plastic mold capable of rapid heating and cooling according to claim 1, characterized in that: grooves are provided on the bonding surfaces of the cavity plate (4) and the core plate (6), so that A gasket is provided in the groove. 4. A plastic mold capable of rapid heating and cooling according to claim 1, characterized in that: the width and height of the electric heater (13) are equal to the width and height of the mold cavity (14). 5. A plastic mold capable of rapid heating and cooling according to claim 1, characterized in that: a heat insulating board is provided between the cavity plate (4) and the core plate (6).