Bottle blank uniform heating plate

Abstract

A bottle blank uniform heating plate is installed in a bottle blank heating furnace, a light reflecting plate is arranged on the opposite side of the heating plate, the heating plate horizontally emits infrared rays towards the light reflecting plate, and a heating area is formed between the heating plate and the light reflecting plate. The heating plate is arranged in the bottle blank heating furnace, the heating plate generates infrared rays through the graphene heating plate, the microcrystal panel serves as a carrier, the infrared rays generated by the graphene heating plate have directivity and are evenly emitted outwards in the direction perpendicular to the microcrystal panel, and therefore the bottle blank is subjected to infrared radiation heating; the characteristic that infrared rays can penetrate into bottle blanks to be heated is fully utilized, the heating uniformity of the bottle blanks in the heating furnace is improved, most of the infrared rays generated by the heating plate are used for heating the bottle blanks, the heat utilization rate is improved, and the energy consumption of the heating furnace is reduced; compared with a traditional heating lamp tube, the attenuation speed of the graphene heating plate is low, and the heating plate has the long service life.

Description

Technical Field

[0001] This utility model belongs to the technical field of bottle preform heating device, specifically relating to a uniform heating plate for bottle preforms. Background Technology

[0002] In the bottle manufacturing process, a semi-finished product, called a preform, needs to be formed by injection molding before blow molding; then the preform is placed into a blow molding machine to form a bottle.

[0003] In existing technologies, before blowing bottles, the preform is first fed into a heating furnace to soften the preform to a highly elastic state, and then sent to the blowing station for blowing. The heating furnace in existing technologies generally uses electric heating tubes. For example, Chinese patent document CN220129493U discloses a preform heating device for a blowing machine, including a worktable for heating the preform and a support box movably connected to the surface of the worktable. An insulation cover is installed on the surface of the worktable, and multiple electric heating tubes for heating the preform are installed on the inner walls of both sides of the insulation cover. The heat generated by the electric heating tubes heats the preform, softening it, and then the preform is rotated to ensure uniform heating.

[0004] Although the preform heating device in the prior art can heat the preform to a certain extent, the heat generated by the electric heating tube has low penetration into the preform. The heat mainly enters the preform gradually through heat transfer, resulting in poor heating uniformity inside and outside the preform. In addition, the heat generated by the electric heating tube will dissipate from both ends of the insulation cover, resulting in lower temperature at both ends of the heating channel and higher internal temperature. Due to the large heat loss generated by the electric heating tube, the energy consumption of the heating furnace of the current blow molding machine is generally high. Utility Model Content

[0005] In order to overcome at least some of the shortcomings of the prior art, the present invention provides a uniform heating plate for bottle preforms.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A uniform heating plate for preforms is installed inside a preform heating furnace. A reflector is provided on one side of the heating plate, and the heating plate emits infrared rays horizontally toward the reflector. A heating zone is formed between the heating plate and the reflector. The heating plate includes a graphene heating plate for generating infrared rays, a microcrystalline panel for emitting the infrared rays generated by the graphene heating plate outward in parallel, and a first electrode and a second electrode for connecting the graphene heating plate to electricity. The microcrystalline panel is disposed on the front side of the graphene heating plate, and the first electrode and the second electrode are respectively connected to the two ends of the graphene heating plate. An insulating heat insulation plate is provided on the back side of the graphene heating plate.

[0008] In this invention, the infrared wavelength emitted by the heating plate is in the range of 4µm to 15µm.

[0009] In this invention, the heating plate further includes a bottom shell, the bottom shell having an inner cavity with a front opening, the graphene heating plate, the first electrode, the second electrode and the insulating heat insulation plate are assembled into a whole and installed in the inner cavity, and the microcrystalline panel covers the front of the bottom shell.

[0010] In this invention, the bottom shell is made of insulating and heat-insulating material.

[0011] In this invention, the first electrode and the second electrode are respectively led out through the bottom shell via conductive wires.

[0012] In this invention, the graphene heating plate is fixedly installed inside the bottom shell using an insulating heat insulation plate as a substrate, and the graphene heating plate is manufactured by printing graphene conductive paste onto the insulating heat insulation plate.

[0013] The beneficial effects of this invention are as follows: By setting a heating plate inside the preform heating furnace, the heating plate generates infrared rays through a graphene heating plate and uses a microcrystalline panel as a carrier, making the infrared rays generated by the graphene heating plate directional and uniformly emitted outward in a direction perpendicular to the microcrystalline panel, thereby heating the preform with infrared radiation. This fully utilizes the characteristic that infrared rays can penetrate into the preform for heating, improving the uniformity of preform heating in the furnace. Furthermore, most of the infrared rays generated by the heating plate are used for preform heating, increasing heat utilization and reducing the energy consumption of the furnace. Compared with traditional heating lamps, the graphene heating plate has a slower decay rate, and the heating plate of this invention has a longer service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation structure of the heating plate in this embodiment;

[0015] Figure 2 This is a schematic diagram of the internal structure of the heating plate in this embodiment. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0017] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0018] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0019] like Figure 1 and Figure 2As shown, this embodiment discloses a preform uniform heating plate, installed inside a preform heating furnace. A reflector 2 is provided on one side of the heating plate 1 opposite to the reflector 2. The heating plate 1 horizontally emits infrared rays towards the reflector 2, forming a heating zone 3 between the heating plate 1 and the reflector 2. A first light-blocking plate 4 is provided at the bottom of the heating plate 1, and a second light-blocking plate 5 is provided at the bottom of the reflector 2. The first and second light-blocking plates 4 and 5 are positioned at the same horizontal level, and are spaced apart to form a preform heating channel 6. The width of the preform heating channel 6 is smaller than the outer diameter of the preform support ring, and larger than the outer diameter of the preform neck. Therefore... The preform portion enters the heating zone 3 through the preform heating channel 6, and the bottle mouth portion is located on the outer side of the preform heating channel 6 away from the heating zone 3, so that the heating zone 3 heats the preform portion of the bottle uniformly; the heating plate 1 includes a graphene heating plate 11 for generating infrared rays, a microcrystalline panel 12 for emitting the infrared rays generated by the graphene heating plate 11 outward in parallel, and a first electrode 13 and a second electrode 14 for connecting the graphene heating plate 11 to electricity. The microcrystalline panel 12 is disposed on the front side of the graphene heating plate 11, and the first electrode 13 and the second electrode 14 are respectively connected to the two ends of the graphene heating plate 11. An insulating heat insulation plate 15 is provided on the back side of the graphene heating plate 11. This embodiment uses a heating plate 1 inside a preform heating furnace. The heating plate 1 generates infrared rays through a graphene heating plate 11 and uses a microcrystalline panel 12 as a carrier, so that the infrared rays generated by the graphene heating plate 11 are directional and emitted uniformly outward in a direction perpendicular to the microcrystalline panel 12, thereby heating the preform with infrared radiation. This fully utilizes the characteristic that infrared rays can penetrate into the preform for heating, improving the uniformity of preform heating in the furnace. Furthermore, most of the infrared rays generated by the heating plate 1 are used for preform heating, improving heat utilization and reducing the energy consumption of the furnace. Compared with traditional heating lamps, the graphene heating plate 11 has a slower decay rate, and the heating plate 1 in this embodiment has a longer service life.

[0020] Preferably, the infrared wavelength emitted by the heating plate 1 is in the range of 4um to 15um, which increases the energy density of the infrared rays and its energy conversion rate is greater than 90%. That is, more than 90% of the electrical energy consumed can be converted into infrared rays for heating the preform. Therefore, the heating plate 1 has a better heating effect on the preform and lower energy consumption.

[0021] Preferably, the heating plate 1 further includes a bottom shell 16, which has an inner cavity 161 with a front opening. The graphene heating plate 11, the first electrode 13, the second electrode 14, and the insulating heat insulation plate 15 are assembled into a whole and installed in the inner cavity 161. The microcrystalline panel 12 covers the front of the bottom shell 16. The bottom shell 16 is made of insulating heat insulation material. By setting the bottom shell 16 to wrap the graphene heating plate 11, the first electrode 13, the second electrode 14, and the insulating heat insulation plate 15, the safety of the heating plate 1 is improved, preventing leakage of electricity from the outside of the heating plate 1 or heat transfer from the sides and back of the heating plate 1 to the heating furnace, which could damage the structure of the heating furnace. The first electrode 13 and the second electrode 14 are respectively led out through the bottom shell 16 by conductive wires. The graphene heating plate 11 is fixedly installed in the bottom shell 16 with the insulating heat insulation plate 15 as a substrate. The graphene heating plate 11 is printed on the insulating heat insulation plate 15 using graphene conductive paste.

[0022] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. A uniform heating plate for bottle preforms, characterized in that: Installed inside the preform heating furnace, the heating plate (1) is provided with a reflector (2) on one side opposite to it. The heating plate (1) emits infrared rays horizontally towards the reflector (2), and a heating zone (3) is formed between the heating plate (1) and the reflector (2). The heating plate (1) includes a graphene heating plate (11) for generating infrared rays, a microcrystalline panel (12) for emitting the infrared rays generated by the graphene heating plate (11) outward in parallel, a first electrode (13) and a second electrode (14) for connecting the graphene heating plate (11) to electricity. The microcrystalline panel (12) is disposed on the front side of the graphene heating plate (11), and the first electrode (13) and the second electrode (14) are respectively connected to the two ends of the graphene heating plate (11). An insulating heat insulation plate (15) is provided on the back side of the graphene heating plate (11).

2. The preform uniform heating plate according to claim 1, characterized in that: The infrared wavelength emitted by the heating plate (1) is in the range of 4um to 15um.

3. The preform uniform heating plate according to claim 1, characterized in that: The heating plate (1) also includes a bottom shell (16), which has an inner cavity (161) with a front opening. The graphene heating plate (11), the first electrode (13), the second electrode (14) and the insulating heat insulation plate (15) are assembled into a whole and installed in the inner cavity (161). The microcrystalline panel (12) covers the front of the bottom shell (16).

4. The preform uniform heating plate according to claim 3, characterized in that: The bottom shell (16) is made of insulating and heat-insulating material.

5. A uniform heating plate for bottle preforms according to claim 3, characterized in that: The first electrode (13) and the second electrode (14) are respectively led out through the bottom shell (16) by conductive wires.

6. The preform uniform heating plate according to claim 1, characterized in that: The graphene heating plate (11) is fixedly installed in the bottom shell (16) with the insulating heat insulation plate (15) as the substrate. The graphene heating plate (11) is made by printing graphene conductive paste on the insulating heat insulation plate (15).

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