CN218777090U - Mold heating mold disc used in plastic suction machine - Google Patents

Abstract

The utility model relates to a mould heating die disc for in plastic uptake machine belongs to mechanical equipment technical field. The heating plate for solving current heating mould dish can carry out secondary heating to thermal-insulated backing plate, leads to the poor problem of shaping product appearance quality. The heating die disc is arranged in a box body of a plastic uptake machine and comprises a bottom plate, a heating disc, a die and a heat insulation base plate; the heating plate is fixedly arranged on the bottom plate and comprises a plurality of unit die plates; the unit mould discs are fixed on the bottom plate at intervals, and heating elements are arranged in the unit mould discs; the upper ends of the plurality of unit mould discs form a heating area matched with the shape of the bottom plate; the die is fixedly arranged in the heating area to form a processing area, the rest area of the heating area forms a non-processing area, and the area of the non-processing area is provided with a heat insulation base plate; heating the die by a heating element through a unit die plate of a processing area where the die is located; the unit die disc in the non-processing area is not heated, so that the heat insulation base plate is not heated secondarily, and the processing quality of a formed product is high.

Description

Mold heating mold disc used in plastic suction machine

Technical Field

The application relates to a mold heating mold disc used in a plastic sucking machine, and belongs to the technical field of mechanical equipment.

Background

Thermoforming is a molding process in which a thermoplastic material is heated to soften and is formed into an article under gas pressure, liquid pressure, or mechanical pressure using a suitable mold or fixture. The plastic suction process is a widely used thermal forming method, and is far away from the technical scheme that after a flat plastic material is heated and softened, the plastic material is adsorbed on the surface of a mold in a vacuum mode, and then the plastic material is cooled to obtain a formed product.

The existing plastic suction process has many types, and is mainly divided into two types, one is that plastic materials are directly heated, and vacuum negative pressure is adopted to adsorb the softened materials to a mold after the materials are softened. And the other method is to heat the mould, heat the mould to the softening temperature of the material, contact the mould and the material, simultaneously perform air suction to generate vacuum negative pressure, attach the material to the mould under the adsorption force of the vacuum negative pressure, heat and soften the material by using the temperature of the mould, and then cool the material to obtain a molded product. The two modes work in the same principle, but the heating objects are different, so that the conventional vacuum molding machine is similar in construction.

The working principle of the existing plastic sucking machine is that a material pressing frame is arranged at an upper opening of a box body of the plastic sucking machine and used for fixing plastic materials, a heating die disc is arranged in the box body in a sliding mode, a die is arranged on the heating die disc, and the die is heated by a heating plate at the bottom of the die. Plastic materials are discharged in a coiled material mode, placed at the upper opening of the box body and then pressed and fixed by the pressing frame, then the heating plate heats the die, after the temperature reaches the set temperature, the die slides towards the upper opening and drives the die to slide towards the direction of the product, meanwhile, the air exhaust device of the plastic sucking machine exhausts air to generate vacuum negative pressure, the plastic materials are attached to the die under the action of the negative pressure, the plastic materials are heated and softened by the die, and then the plastic materials are cooled to obtain a formed product.

In the vacuum molding machine of such a production method, since the mold of the mold is an actual processing region and the region of the mold other than the mold is a non-processing region, but the discharge area of the plastic material processed at each time is larger than the mold area, in order to avoid material waste due to softening and deformation of the plastic material in the non-processing region by high temperature, a heat insulating spacer is provided in the non-processing region in the conventional method to block the temperature of the non-processing region. Although the heat insulation cushion plate can play a certain heat insulation role, when a plastic material sensitive to temperature change is processed, the heating plate still heats the heat insulation cushion plate (because of the heat insulation effect, the heating temperature is lower than the temperature of a mold, but the temperature is higher than the normal temperature). In order to avoid secondary heating, a heating plate of a heating die plate is set to be in a shape matched with a die in a common mode, but when various production lines of different dies are produced, the problem that production cost is increased due to the fact that various heating plates need to be produced is caused.

SUMMERY OF THE UTILITY MODEL

To the problem and not enough that exist among the prior art, this application provides a mould heating die disc for in plastic uptake machine, constitutes the heating plate that heats the die disc through setting up a plurality of unit die disc, and unit die disc is independent each other, and the interval is installed on the bottom plate, and the heating plate that constitutes by unit die disc is when heating, and the unit die disc in the region at mould place utilizes heating element to heat alone, and the unit die disc in non-processing district does not heat, realizes that the thermal-insulated backing plate can not take place the secondary heating. The application discloses heating die disc is applicable to different moulds, and product application scope is wide.

In order to achieve the above purpose, the present application provides the following technical solutions: a mould heating mould disc used in a plastic suction machine is arranged in a box body of the plastic suction machine and comprises a bottom plate, a heating disc, a mould and a heat insulation base plate; the heating plate is placed on the bottom plate and comprises a plurality of unit die plates; the unit mould discs are fixed on the bottom plate at intervals, and heating elements are arranged in the unit mould discs; the upper ends of the plurality of unit mould discs form a heating area matched with the shape of the bottom plate; the die is fixedly arranged in the heating area to form a processing area, the rest area of the heating area forms a non-processing area, and the area of the non-processing area is provided with a heat insulation base plate; the product to be processed covers the upper opening of the box body of the plastic suction machine, the unit die disc of the processing area where the die is located heats the die through the heating element, and after heating is completed, the product is adsorbed on the die to perform heating plasticizing work.

Specifically, a heat insulation backing plate is arranged between the heating plate and the bottom plate. The heat insulation backing plate is arranged between the heating plate and the bottom plate so as to form a heat insulation effect between the unit die plates at the intersection of the processing area and the non-processing area, and heat of the unit die plates in the processing area is prevented from being transferred to the unit die plates in the non-processing area through the bottom plate, so that the unit die plates in the non-processing area can heat the heat insulation backing plate in the non-processing area.

Specifically, the unit die disc is provided with two through holes along the die disc body, wherein one through hole is used for installing a heating element, and the other through hole is used for installing a cooling element. According to the arrangement, when a plastic material sensitive to temperature is processed according to processing requirements, in order to further improve the temperature control of the heat insulation cushion plate in the non-processing area, the unit die plate in the processing area can be selected to be cooled by opening the cooling element of the unit die plate in the non-processing area when the unit die plate is heated, so that the temperature rise of the heat insulation cushion plate in the non-processing area due to heat conduction is avoided, and the processing quality of a formed product is improved.

Specifically, the heating element is a heating pipe; the cooling element is a cooling water pipe.

Specifically, the unit mold disc is provided with a plurality of exhaust holes, and one end of each exhaust hole, which is far away from the mold, is connected with an air exhaust device of the plastic suction machine. The exhaust hole is connected with the air extraction device, so that vacuum negative pressure is generated in the box body of the plastic suction machine through the air extraction device after heating is completed.

Specifically, the heating mold disc is slidably mounted in a box body of the plastic sucking machine relative to the opening side of the plastic sucking machine. The plastic material heating device is arranged in such a way that after the die is heated by the unit die plate, the heating die plate slides towards the opening side of the plastic sucking machine to drive the die to heat the plastic material arranged at the opening, so that the plastic material is softened and molded, and after the plastic material is cooled, a molded product can be obtained.

Specifically, the heat insulation backing plate is a bakelite backing plate.

Specifically, the spacing distance between two adjacent unit die plates is 4-6mm. The spacing distance is set, and the adjacent unit mould discs are set with the adaptive spacing, so that the unit mould discs arranged at intervals can effectively heat the mould when the unit mould discs are positioned in the processing area, and the condition that the subsequent processing is influenced due to uneven heating of the mould caused by large spacing distance is avoided; and when the unit die disc is positioned at the junction of the processing area and the non-processing area, the heat of the processing area can not be conducted into the non-processing area due to the small spacing distance, so that a certain heat insulation effect is achieved.

Specifically, the bottom plate is made of a ferrous material. The bottom plate is made of an iron material, so that the bearing of the bottom plate as the whole die disc component is improved, the bottom plate is guaranteed to be kept not to deform under the action of vacuum negative pressure, and the installation stability of the die disc component is improved during die disc machining.

Specifically, the unit mold plate is made of aluminum materials. The aluminum unit mold disc is used as the heating disc, and the characteristics of high thermal conductivity, corrosion resistance and the like of aluminum are utilized, so that the heating energy is saved, and the service life of equipment is prolonged.

Compared with the prior art, the beneficial effect of this application lies in:

1. this application is installed in the bottom plate through setting up a plurality of unit mould dish interval, constitutes the heating plate of mould dish, when heating the mould, only need open with the heating of the corresponding unit mould dish of mould can, but the unit mould dish in non-processing district need not to heat, guarantee that the thermal-insulated backing plate in non-processing district can not by the secondary heating, improve shaping product quality. Meanwhile, the heating plate is formed by adopting the separated unit mould discs, so that the heating plate can be processed aiming at different moulds, and the universality of the plastic uptake machine is improved.

2. This application can further prevent to process the heat in district and conduct to non-processing district through the bottom plate through setting up thermal-insulated backing plate between bottom plate and heating plate. Meanwhile, the cooling element is arranged in the unit die disc, so that special materials sensitive to temperature can be processed, and the application range of products is wide.

3. This application can heat the unit mould dish in processing district on the one hand through set up heating element and cooling element in unit mould dish, also can cool off the unit mould dish in non-processing district, guarantees the finished product quality of shaping product. The second aspect can realize the selection of heating temperature through the control of the opening degree of the heating element and the cooling element, and meets the production of products with different heating temperatures. On the other hand can carry out quick cooling to the product shaping back through cooling element, the quick effectual drawing of patterns of being convenient for improves production efficiency.

Drawings

FIG. 1 is a side view showing the structure of a heating die plate of the prior art of this embodiment;

fig. 2 is a structural side view of the mold heating mold plate for use in the plastic sucking machine of the present embodiment.

In the figure: 1. a heat insulating base plate; 2. a mold; 3. heating the plate; 4. a base plate; 5. a unit mold plate; 6. a cooling element; 7. a heating element.

Detailed Description

The present application will be further explained with reference to the drawings in the examples of the present application.

Please refer to fig. 1-2, this embodiment discloses a mold heating mold disc for use in a plastic suction machine, the heating mold disc is installed in a box body of the plastic suction machine, and comprises a bottom plate 4, a heating plate, a mold 2 and a heat insulation backing plate 1; the heating plate is placed on the bottom plate 4 and comprises a plurality of unit die plates 5; the unit mould discs 5 are fixed on the bottom plate 4 at intervals, and heating elements 7 are arranged in the unit mould discs; the upper ends of the plurality of unit mould discs 5 form a heating area matched with the shape of the bottom plate 4; the mould 2 is fixedly arranged in a heating area to form a processing area, the rest area of the heating area forms a non-processing area, and the area of the non-processing area is provided with a heat insulation base plate 1; the product to be processed covers the upper opening of the box body of the plastic suction machine, the unit die disc 5 of the processing area where the die 2 is located heats the die 2 through the heating element 7, and after heating is completed, the product is adsorbed on the die to perform heating plasticizing work.

Further, a heat insulation backing plate 1 is arranged between the heating plate and the bottom plate 4.

Further, the unit die plate 5 is provided with two through holes along the die plate body, one for mounting the heating element 7 and the other for mounting the cooling element 6.

Further, the heating element 7 is a heating pipe; the cooling element 6 is a cooling water pipe.

Furthermore, the unit mould disc 5 is provided with a plurality of exhaust holes, and one end of each exhaust hole, which is far away from the mould, is connected with an air extractor of the plastic uptake machine.

Furthermore, the heating mould disc is arranged in the box body of the plastic sucking machine in a sliding mode relative to the opening side of the plastic sucking machine.

Further, the heat insulation backing plate 1 is a bakelite backing plate.

Further, the spacing distance between two adjacent unit mould discs 5 is 4-6mm.

Further, the bottom plate 4 is made of a ferrous material.

Further, the unit mold 5 is made of an aluminum material.

The working principle is as follows: 1. when the plastic uptake machine works, one end of a product to be processed is discharged in a coiled material mode and is placed at the upper opening of the box body of the plastic uptake machine, and after the product to be processed is placed, the material is pressed and fixed through the material pressing frame of the plastic uptake machine (note that the material pressing frame only presses and fixes the product, but does not perform cutting separation). Therefore, a relatively closed processing space is formed in the box body through the product to be processed with the opening on the box body.

2. After discharging of the product is completed, the plastic sucking machine starts heating of the heating elements 7 of the unit mold disc 5 of the processing area where the mold 2 is located, and the heating elements 7 conduct heating heat to the mold 2 through the unit mold disc 5 to heat the mold 2. In order to ensure that the heat insulating mat 1 in which the non-processing zone is located is not heated, the cooling of the cooling elements of the unit die plate 5 in which the non-processing zone is located is started. Thus, the unit die plate 5 of the non-processing area ensures that the temperature of the heat insulation backing plate 1 above the non-processing area does not rise through the cooling of the cooling element 6 and the heat insulation effect of the heat insulation backing plate 1 below.

3. When the temperature of the mold 2 reaches the designated processing temperature, the plastic suction machine drives the heating mold disc to integrally slide towards the upper opening of the box body, the mold 2 is driven to slide towards the product to be processed, the plastic suction machine simultaneously starts the air suction device, and air in the box body is sucked away through the exhaust holes formed in the unit mold discs 5, so that vacuum negative pressure is generated in the box body. After the product to be processed is contacted with the mold 2, the product is completely attached to the mold 2 under the action of vacuum negative pressure, the product is heated, softened and molded under the heating action of the mold 2, then the molded product is cooled by a plastic uptake machine, and the softened product is cooled to form a molded product.

4. And (3) transferring the formed product and separating the formed product from the coiled material, continuously discharging the coiled material, transferring the product positioned in the non-processing area to the processing area, repeating the steps 1-3, and repeating the plastic suction processing of the product.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. That is, all the equivalent changes and modifications made according to the content of the claims of the present application fall within the technical scope of the present application.

Claims (10)

1. A mold heating mold disc used in a plastic suction machine is arranged in a box body of the plastic suction machine and comprises a bottom plate, a heating plate, a mold and a heat insulation base plate; the heating plate is placed on the bottom plate, its characterized in that: the heating plate comprises a plurality of unit die plates; the unit mould discs are fixed on the bottom plate at intervals, and heating elements are arranged in the unit mould discs; the upper ends of the unit mould discs form a heating area matched with the shape of the bottom plate; the die is fixedly arranged in the heating area to form a processing area, the rest area of the heating area forms a non-processing area, and the heat insulation base plate is arranged in the non-processing area; the product to be processed covers the upper opening of the box body of the plastic uptake machine, the unit die disc of the processing area where the die is located heats the die through the heating element, and after heating is completed, the product is adsorbed on the die to perform heating plasticizing work.

2. The mold heating platen of claim 1, wherein: and a heat insulation base plate is arranged between the heating plate and the bottom plate.

3. The mold heating platen of claim 1, wherein: the unit die disc is provided with two through holes along the die disc body, one through hole is used for installing a heating element, and the other through hole is used for installing a cooling element.

4. The mold heating platen of claim 3, wherein: the heating element is a heating pipe; the cooling element is a cooling water pipe.

5. The mold heating platen of claim 3, wherein: the unit mold disc is provided with a plurality of exhaust holes, and one end of each exhaust hole, which is far away from the mold, is connected with an air extractor of the plastic suction machine.

6. The mold heating platen of claim 1, wherein: the mold disc is slidably mounted in a box body of the plastic sucking machine relative to the opening side of the plastic sucking machine.

7. The mold heating platen for use in a plastic molding machine according to claim 1 or 2, wherein: the heat insulation backing plate is a bakelite backing plate.

8. The mold heating platen of claim 1, wherein: the spacing distance between two adjacent unit die plates is 4-6mm.

9. The mold heating platen of claim 1, wherein: the bottom plate is made of a ferrous material.

10. The mold heating platen of claim 1, wherein: the unit mould plate is made of an aluminum material.

Images