Plastic hollow forming die head

Abstract

The utility model discloses a plastic hollow forming die head which comprises a die head body, a heating and heat preservation mechanism is fixedly installed on the outer side of the die head body, a parison discharging port is formed in the lower end of the die head body, a heating groove is formed in the lower end of the parison discharging port, and a heating rod is arranged on the inner side of the heating groove. According to the plastic hollow forming die head, the heating and heat preservation mechanism arranged on the outer side of the die head is used in cooperation, the ceramic heating ring can preheat and heat the die head, the situation that viscosity is unstable due to the fact that the temperature difference is too large when the die head makes contact with plastic melt is avoided, and therefore the rejection rate is reduced; heat can be effectively reflected through the hollow ceramic heat insulation coating on the outer side of the high-temperature-resistant stainless steel plate, heat transfer is reduced, a heat insulation barrier is formed, heat loss is prevented, the heat preservation effect can be further achieved through cooperation with the glass fiber heat preservation layer on the outer layer, heat loss is reduced, the reheating frequency is reduced, and more energy conservation and environment protection are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to blow molding relevant technical field, concretely is a kind of plastic hollow forming die. BACKGROUND

[0002] Blow molding is also called hollow blow molding, it is a kind of plastic processing method, tubular plastic parison of thermoplastic resin is formed by extrusion or injection guide die head, is placed in split mold while hot or heating to softening state, immediately after closing mold, compressed air is introduced into parison, and plastic parison is blown up and tightly attached to the inner wall of mold, after cooling and demolding, various hollow plastic products are obtained, in the field of plastic blow molding processing, plastic hollow forming die plays a vital role, with the rapid development of modern industry and the wide application of plastic products in various industries, the quality, production efficiency and cost control of plastic hollow products are increasingly required.

[0003] The existing plastic hollow forming die, the heating and heat preservation system of die head is not perfect, heat loss is more serious, in the case of cold weather zone and lower temperature, plastic melt after extruder heating is easy to cause temperature fluctuation to cause plastic melt viscosity instability after entering die head, in turn leading to the effect of product forming is poor, not only increase the waste rate in production process, therefore need to put forward a kind of plastic hollow forming die. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of plastic hollow forming die to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of plastic hollow forming die, including die head, the outside of the die head is fixedly installed with heating and heat preservation mechanism, the lower end of the die head is provided with embryo discharge port, the lower end of the embryo discharge port is provided with heating groove, the inside of the heating groove is provided with heating rod;

[0006] The heating and heat preservation mechanism includes ceramic heating ring, high-temperature stainless steel plate, heat insulation coating, heat preservation layer, heat insulation plate, terminal and bolt, the outside of the ceramic heating ring is provided with high-temperature stainless steel plate, the outside of the high-temperature stainless steel plate is coated with heat insulation coating, the outside of the heat insulation coating is provided with heat preservation layer, the outside of the heat preservation layer is fixedly installed with heat insulation plate, the outside of the heat insulation plate is fixedly installed with terminal, the outside of the heat insulation plate is fixedly installed with bolt.

[0007] Preferably, the heat insulation coating is made of hollow ceramic material, and the heat preservation layer is made of glass fiber material.

[0008] Preferably, the heat insulation plate is made of polyimide material, and the high-temperature stainless steel plate is located between the ceramic heating ring and the heat insulation coating.

[0009] Preferably, the heat insulation coating is located between the high-temperature-resistant stainless steel plate and the heat preservation layer, and the heat preservation layer is located between the heat insulation coating and the heat insulation plate.

[0010] Preferably, two of the latches are located on the outer side of the heat insulation plate, and the heating and heat preservation mechanism is in a circular structure and is wrapped on the outer side of the die head.

[0011] Preferably, the heating groove is in a circular structure, and the ceramic heating ring is electrically connected with the wiring port.

[0012] Preferably, three of the heating grooves are located at the lower end of the parison discharge port, and the heating rod is screw-mounted with the heating groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The plastic hollow forming die, through the cooperation of the heating and heat preservation mechanism arranged on the outer side of the die head, the ceramic heating ring can preheat and heat the die head, prevent the viscosity from being unstable due to too large temperature difference when the die head contacts the plastic melt, thereby reducing the waste rate, the hollow ceramic heat insulation coating on the outer side of the high-temperature-resistant stainless steel plate can effectively reflect heat, reduce heat transfer, form a heat insulation barrier, prevent heat loss, and cooperate with the outer glass fiber heat preservation layer to further improve the heat preservation effect, reduce heat loss, reduce the frequency of re-heating, and be more energy-saving and environment-friendly.

[0015] 2. The plastic hollow forming die, through the heating groove arranged below the parison discharge port, the heating rod can be fixedly installed on the inner side of the parison discharge port, the parison can be heat preserved, the blank can be prevented from being solidified fast due to cold weather, the parison can maintain a certain temperature and softness after leaving the discharge port, the subsequent blow molding link is facilitated, and the blow molding quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a first split structure schematic view of the utility model;

[0018] Figure 3 It is a second split structure schematic view of the utility model;

[0019] Figure 4 It is a three-dimensional structure schematic view of the heating and heat preservation mechanism of the utility model;

[0020] Figure 5 It is a local enlarged structure schematic view of the heating and heat preservation mechanism of the utility model;

[0021] Figure 6The utility model discloses a plastic hollow forming die head, including die head 1, the outside fixed mounting of die head 1 has heating insulation mechanism 2, the lower end of die head 1 is provided with the embryo outlet 3, the lower end of embryo outlet 3 is provided with heating groove 4, the inside of heating groove 4 is provided with heating rod 5, and heating insulation mechanism 2 includes ceramic heating ring 201, high temperature resistant stainless steel plate 202, heat insulation coating 203, heat preservation layer 204, heat insulation plate 205, wiring port 206 and bolt 207, the outside of ceramic heating ring 201 is provided with high temperature resistant stainless steel plate 202, the outside of high temperature resistant stainless steel plate 202 is coated with heat insulation coating 203, the outside of heat insulation coating 203 is provided with heat preservation layer 204, the outside fixed mounting of heat preservation layer 204 has heat insulation plate 205, the outside fixed mounting of heat insulation plate 205 has wiring port 206, the outside fixed mounting of heat insulation plate 205 has bolt 207, and the cooperation of the use of heating insulation mechanism 2 that the outside of die head 1 is provided with can heat and heat preservation to die head 1 by ceramic heating ring 201.

[0022] Wherein: 1, die head;2, heating insulation mechanism;201, ceramic heating ring;202, high temperature resistant stainless steel plate;203, heat insulation coating;204, heat preservation layer;205, heat insulation plate;206, wiring port;207, bolt;3, embryo outlet;4, heating groove;5, heating rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1-6 The utility model provides technical scheme: a kind of plastic hollow forming die head, including die head 1, the outside fixed mounting of die head 1 has heating insulation mechanism 2, the lower end of die head 1 is provided with the embryo outlet 3, the lower end of embryo outlet 3 is provided with heating groove 4, the inside of heating groove 4 is provided with heating rod 5, and heating insulation mechanism 2 includes ceramic heating ring 201, high temperature resistant stainless steel plate 202, heat insulation coating 203, heat preservation layer 204, heat insulation plate 205, wiring port 206 and bolt 207, the outside of ceramic heating ring 201 is provided with high temperature resistant stainless steel plate 202, the outside of high temperature resistant stainless steel plate 202 is coated with heat insulation coating 203, the outside of heat insulation coating 203 is provided with heat preservation layer 204, the outside fixed mounting of heat preservation layer 204 has heat insulation plate 205, the outside fixed mounting of heat insulation plate 205 has wiring port 206, the outside fixed mounting of heat insulation plate 205 has bolt 207, and the cooperation of the use of heating insulation mechanism 2 that the outside of die head 1 is provided with can heat and heat preservation to die head 1 by ceramic heating ring 201.

[0025] Please refer to Figures 2-6In this embodiment, the heat insulation coating 203 is made of hollow ceramic material, the heat preservation layer 204 is made of glass fiber material, the heat insulation plate 205 is made of polyimide material, the high-temperature-resistant stainless steel plate 202 is located between the ceramic heating ring 201 and the heat insulation coating 203, the hollow ceramic heat insulation coating 203 outside the high-temperature-resistant stainless steel plate 202 can effectively reflect heat and reduce heat transfer, forming a heat insulation barrier to prevent heat loss. The heat insulation coating 203 is located between the high-temperature-resistant stainless steel plate 202 and the heat preservation layer 204, and the heat preservation layer 204 is located between the heat insulation coating 203 and the heat insulation plate 205. The glass fiber heat preservation layer 204 outside the heat insulation coating 203 can further improve the heat preservation effect, reduce heat loss, reduce the frequency of re-heating, and be more energy-saving and environmentally friendly. The latch 207 is provided with two outside the heat insulation plate 205. The heating and heat preservation mechanism 2 is in a circular structure and is wrapped outside the die head 1. The heating groove 4 is in a circular structure. The ceramic heating ring 201 is electrically connected with the wiring port 206. The ceramic heating ring 201 can preheat and heat the die head 1, prevent the die head from contacting the plastic melt when the temperature difference is too large, and cause unstable viscosity, thereby reducing the scrap rate. The heating groove 4 is provided below the parison discharge port 3 and is provided with three heating grooves 4. The heating rod 5 is screw-mounted with the heating groove 4. The heating groove 4 below the parison discharge port 3 can be fixedly installed inside the parison discharge port 3, can heat preservation for the parison, can avoid the blank solidification fast because of cold weather, can keep the parison at a certain temperature and softness after leaving the discharge port, and is convenient for the subsequent blow molding link, and improves the blow molding quality.

[0026] Working principle: through the cooperation of the heating and heat preservation mechanism 2 provided outside the die head 1, the ceramic heating ring 201 can preheat and heat the die head 1, prevent the die head from contacting the plastic melt when the temperature difference is too large, and cause unstable viscosity, thereby reducing the scrap rate. The hollow ceramic heat insulation coating 203 outside the high-temperature-resistant stainless steel plate 202 can effectively reflect heat and reduce heat transfer, forming a heat insulation barrier to prevent heat loss. The outer glass fiber heat preservation layer 204 can further improve the heat preservation effect, reduce heat loss, reduce the frequency of re-heating, and be more energy-saving and environmentally friendly. The heating groove 4 below the parison discharge port 3 can be fixedly installed inside the parison discharge port 3, can heat preservation for the parison, can avoid the blank solidification fast because of cold weather, can keep the parison at a certain temperature and softness after leaving the discharge port, and is convenient for the subsequent blow molding link, and improves the blow molding quality.

[0027] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connecting mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, the conventional connecting mode is adopted for circuit connection in the prior art, and the specific connecting mode will not be described in detail here, and the contents not described in detail in the description belong to the prior art known by the professional technical personnel in the field.

[0028] The above description of the disclosed embodiments enables those skilled in the art to carry out or use the utility model, various modifications of the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plastic hollow forming die head comprising a die head (1) characterised in that: The outer side of the die head (1) is fixedly installed with a heating and heat preservation mechanism (2), the lower end of the die head (1) is provided with a parison discharge port (3), the lower end of the parison discharge port (3) is provided with a heating groove (4), and the inner side of the heating groove (4) is provided with a heating rod (5); The heating and heat preservation mechanism (2) comprises a ceramic heating ring (201), a high-temperature-resistant stainless steel plate (202), a heat insulation coating (203), a heat preservation layer (204), a heat insulation plate (205), a wiring port (206) and a latch (207), the outer side of the ceramic heating ring (201) is provided with the high-temperature-resistant stainless steel plate (202), the outer side of the high-temperature-resistant stainless steel plate (202) is coated with the heat insulation coating (203), the outer side of the heat insulation coating (203) is provided with the heat preservation layer (204), the outer side of the heat preservation layer (204) is fixedly installed with the heat insulation plate (205), the outer side of the heat insulation plate (205) is fixedly installed with the wiring port (206), and the outer side of the heat insulation plate (205) is fixedly installed with the latch (207).

2. A plastic hollow forming die according to claim 1, characterized in that: The heat insulation coating (203) is made of hollow ceramic material, and the heat preservation layer (204) is made of glass fiber material.

3. A plastic hollow forming die as defined in claim 1, wherein: The heat insulation plate (205) is made of polyimide material, and the high-temperature-resistant stainless steel plate (202) is located between the ceramic heating ring (201) and the heat insulation coating (203).

4. A plastic hollow forming die as defined in claim 1, wherein: The heat insulation coating (203) is located between the high-temperature-resistant stainless steel plate (202) and the heat preservation layer (204), and the heat preservation layer (204) is located between the heat insulation coating (203) and the heat insulation plate (205).

5. A plastic hollow forming die as defined in claim 1, wherein: The two latches (207) are located on the outer side of the heat insulation plate (205), the heating and heat preservation mechanism (2) is in a circular structure and is coated on the outer side of the die head (1).

6. A plastic hollow forming die as defined in claim 1, wherein: The heating groove (4) is in a circular structure, and the ceramic heating ring (201) and the wiring port (206) are electrically connected.

7. A plastic hollow forming die as defined in claim 1, wherein: The three heating grooves (4) are located at the lower end of the parison discharge port (3), and the heating rod (5) is threadedly installed with the heating groove (4).

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