CN220202032U - Heating device and coating machine - Google Patents

Abstract

The utility model relates to the technical field of coating, in particular to a heating device and a coating machine, wherein the heating device comprises a heating component and a temperature probe, the heating component comprises a first heat source and a second heat source which are respectively positioned at two sides of a carrier, the heating range of the first heat source covers the whole carrier, and the second heat source is provided with a plurality of groups which are respectively and correspondingly used for independently heating a plurality of heating areas of the carrier; the temperature probe is configured to monitor a carrier temperature. The first heat source can be used for heating the whole carrier, and the second heat source can be used for rapidly adjusting the temperature difference of each part of the carrier to ensure that the temperature of each part of the carrier is the same, so that the heated consistency of the products on the carrier is ensured; the coating machine comprising the heating device can heat and soak the coated products at all positions of the carrier, so that the consistency of the coating performance of the coated products in the same batch is ensured.

Description

Heating device and coating machine

Technical Field

The utility model relates to the technical field of coating, in particular to a heating device and a coating machine.

Background

The optical resin substrate has the advantages of light weight (2-5 times lighter than optical elements), low cost, strong plasticity and the like, and is widely applied to consumer electronics industries such as glasses, mobile phones, automobiles (HUD and the like), projectors, VR/AR and the like.

When the resin substrate is coated, the defects of large substrate stress, large material air release amount, poor high temperature resistance, high moisture absorption rate, high thermal expansion coefficient and the like are overcome, and the internal stress of the resin substrate and the moisture on the surface of the substrate are effectively eliminated in a heating mode, so that a better coating effect is obtained.

The existing coating machine comprises a vacuum chamber, a rotatable carrier and a heating device, wherein a product to be coated is fixed below the carrier by the carrier matching jig, the heating device is a heating wire fixed at the top of the vacuum chamber generally, the product at each position of the carrier is heated unevenly under the influence of the shape of the carrier, the coating quality of the inner and outer ring resin substrates is inconsistent, and the coating quality cannot pass through high-temperature high-humidity environment tests.

Moreover, the heating wire reaches the purpose of heating the whole vacuum chamber through self-heating, and the heating wire is used alone to heat, and heating efficiency is low, and the effect of getting rid of base plate surface steam is relatively poor, probably leads to the cycle of bleeding to lengthen, influences production efficiency.

Disclosure of Invention

An object of the present utility model is to provide a heating device capable of uniformly heating a product on a carrier with high heating efficiency.

To achieve the purpose, the utility model adopts the following technical scheme:

the heating device is used for heating a carrier carrying a product, a plurality of fixing holes for fixing the product are formed in the carrier, the heating device comprises a heating assembly and a temperature probe, the heating assembly comprises a first heat source and a second heat source which are respectively arranged on two sides of the carrier, the first heat source can heat the whole carrier, the second heat source is provided with a plurality of groups, and the plurality of groups of the second heat sources are respectively and correspondingly heated a plurality of heating areas divided on the carrier; the temperature probe is configured to monitor the carrier surface temperature.

Optionally, the heating region of the carrier includes an inner heating region and an outer heating region, and the second heat source is divided into an inner heating source corresponding to the inner heating region and an outer heating source corresponding to the outer heating region.

Optionally, the second heat source is a heat lamp.

Optionally, the internal heating source and the external heating source are arranged concentrically around the carrier.

Optionally, the angle of the heating lamp is adjustable, and the heating lamp for heating the inner heating zone is different from the angle of the heating lamp for heating the outer heating zone.

Optionally, the first heat source is a resistance wire in a disc-attached arrangement.

Optionally, a plurality of temperature probes are provided, and the distance between the plurality of temperature probes and the carrier is the same.

Another object of the present utility model is to provide a film plating machine, which includes a vacuum chamber, a carrier, and the heating device including an internal heating source and an external heating source, wherein the carrier is a film plating umbrella stand, and the film plating umbrella stand is rotatably disposed at the top of the vacuum chamber.

Optionally, the first heat source is fixed at the top of the vacuum chamber, and the second heat source is fixed at the bottom of the vacuum chamber.

Optionally, based on the fact that the second heat source is a light-emitting lamp, the vacuum chamber is hollow and cylindrical and is formed by sealing and enclosing a cavity and a cavity door, the cavity and the cavity door both comprise side plates, top plates and bottom plates, the top plates and the bottom plates are respectively arranged at two axial ends of the side plates, one group of the inner heat source and one group of the outer heat source are arranged on the bottom plates of the cavity, and the other group of the inner heat source and the outer heat source are arranged on the bottom plates of the cavity door.

The beneficial effects of the utility model are as follows: according to the heating device, the first heat source is adopted to integrally heat the carrier, and the plurality of groups of second heat sources are utilized to respectively heat the plurality of heating areas which are divided into according to the heating difference of the carrier, so that accurate heating is realized, the temperature of each part of the carrier is kept consistent, and the heating efficiency is improved; the coating machine comprising the heating device can ensure the consistency of the coating performance of the products in the same batch, and has high production efficiency.

Drawings

FIG. 1 is a schematic perspective view of a coating machine according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a positional relationship between a second heat source and a carrier according to an embodiment of the present utility model;

in the figure, 1, a first heat source; 2. a second heat source; 2a, an internal heating source; 2b, externally heating a source; 3. a temperature probe; 4. a vacuum chamber; 41. a cavity; 42. a cavity door; 5. a carrier; 6. and (5) a product.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of operation, and are not intended to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

In order to realize larger loading capacity, the carrier of the coating machine is often provided with arc-shaped grooves, however, the existing heating device often adopts simple heating wires, and the distances between the heating wires and the positions of the carrier are different, so that the heating speeds and the temperatures of the positions of the carrier are inconsistent, and the temperatures of coating products of the positions of the carrier are inconsistent.

Based on this, this patent application proposes a heating device, can carry out even heating to the carrier 5 that is used for bearing product 6, has seted up the fixed orifices of fixed product 6 on the carrier 5, and this heating device is not only applicable to the coating film product, also is suitable for other products 6 such as stoving product that need even heating. The heating device comprises a heating assembly and a temperature probe 3, wherein the heating assembly comprises a first heat source 1 and a second heat source 2 which are respectively positioned at two sides of a carrier 5, the first heat source 1 is used for heating the whole carrier 5, the second heat source 2 is provided with a plurality of groups, and a plurality of heating areas divided on the carrier 5 are respectively and correspondingly heated one by one; the temperature probe 3 is then used to detect the temperature of the carrier 5. The division of the heating area on the carrier 5 is divided according to the difference of the heating temperatures of the carrier 5 by the first heat source 1, and the second heat source 2 can compensate for the imbalance of the heating of the first heat source 1. It will be appreciated that there are various factors affecting the heating temperature on the carrier 5, for example, the difference in the distance between the part and the first heat source 1 due to the shape of the carrier 5 may also be affected by the difference in the local heat diffusion speed of the carrier 5, so that the division of the heating area on the carrier 5 is specifically analyzed according to the actual heating situation.

The heating device firstly utilizes the first heat source 1 to comprehensively heat the whole carrier 5 in a large range, then utilizes the second heat source 2 to purposefully heat each heating area respectively, particularly carries out compensation heating on the heating area which is far away from the first heat source 1 or has a higher heat dissipation speed, improves the heating efficiency and realizes precise heating at the same time, so that the carrier 5 and the products 6 positioned at each position of the carrier 5 can be heated uniformly.

This patent application still provides a coating machine, including vacuum chamber 4, carrier 5 and above-mentioned heating device, the top and the bottom at vacuum chamber 4 are fixed respectively to first heat source 1 and second heat source 2 among the heating device, heat the product 6 fixed on the carrier 5 that sets up in vacuum chamber 4 to rotating, the heating efficiency and the stoving effect of product 6 coating film face can be promoted in the setting of first heat source 1 and second heat source 2, release product 6 internal stress, guarantee the uniformity of the product 6 coating film effect of same batch.

1-2 show a film plating machine in one embodiment of the utility model, a vacuum chamber 4 of the film plating machine is made of high-strength steel, can bear vacuum pressure of-5 Pa level and high-temperature baking above 350 ℃, the vacuum chamber 4 is wholly hollow and cylindrical and is formed by sealing and enclosing a cavity 41 and a cavity door 42, the cavity 41 and the cavity door 42 both comprise side plates and a top plate and a bottom plate which are respectively fixed at two axial ends of the side plates, a carrier 5 is a film plating umbrella stand, the center of the carrier 5 is rotationally connected with the top of the cavity, a product 6 is fixed in a fixing hole of the carrier 5 under the cooperation of a jig, the jig belongs to the prior art, and further description is omitted in the embodiment; because the distance between the first heat source 1 and the carrier 5 gradually increases from the center of the carrier 5 to the outside, the temperature of the carrier 5 gradually changes from the center to the outside, the heating area on the carrier 5 is divided according to the sequence from the center to the outside, and is specifically divided into an inner heating area and an outer heating area, and two groups of corresponding second heat sources 2 are also arranged, namely an inner heating source 2a and an outer heating source 2b, and the heating power of each group of second heat sources 2 can be independently controlled to heat the inner heating area and the outer heating area respectively.

It should be understood that in this embodiment, the dividing of the heating area on the carrier 5 is performed according to the distance between the carrier 5 and the first heat source 1 (the temperature is different due to the different distances), and in other embodiments, the dividing is not limited to the dividing into the inner heating area and the outer heating area, and is not limited to the dividing into only two heating areas. Correspondingly, the distribution of the second heat sources 2 and the number of groups are also changed.

The first heat source 1 is an electrical resistance wire coiled on the top plate of the cavity 41, the service life of the electrical resistance wire is long, the heating range of the electrical resistance wire is wide, the electrical resistance wire can cover the whole carrier 5 and heat the carrier for a long time, and in particular, the radius of the coiled electrical resistance wire structure is not smaller than the radius of the carrier 5. The second heat source 2 is a heat-generating lamp, specifically, a halogen lamp or an infrared heating lamp, wherein tungsten atoms are evaporated toward the glass wall when the halogen lamp heats the filament; when approaching the glass wall, the tungsten vapor is cooled to around 800 ℃ and forms tungsten halide (bromide, iodide, tungsten or tungsten) with the halogen atoms; the tungsten halide continues to move to the center of the glass tube and returns to the filament again; since tungsten halide is a very unstable compound, it is re-decomposed into tungsten and halogen vapors after heating. Through the cyclic regeneration process, the service life of the filament can be prolonged, the heating value of the halogen lamp is larger, and the heating performance is better and more stable.

Compared with the resistance wire, the heating lamp realizes heat energy transmission through illumination, directly irradiates on the film plating surface of the product 6, can quickly raise the temperature, and ensures that the temperature of the product 6 in the heating zone in the carrier 5 is consistent with that of the product 6 in the outer heating zone.

Based on the arrangement that the second heat source 2 is a heating lamp, an inner heating source 2a and an outer heating source 2b in the second heat source 2 are concentrically arranged around the carrier 5, one group of the inner heating source 2a and the outer heating source 2b is fixed on the bottom plate of the cavity 41, the other group of the inner heating source 2a and the outer heating source 2b are fixed on the bottom plate of the cavity door 42, the inner heating source 2a and the outer heating source 2b respectively comprise two heating lamps which are symmetrically arranged on the cavity 41 and the cavity door 42, and the angles of lamp holders of the heating lamps relative to the carrier 5 are adjustable, so that light rays emitted by the heating lamps respectively and accurately irradiate an inner heating area and an outer heating area which need to be heated by the carrier 5. In some embodiments, the heat lamps used to heat the inner heating zone are at different angles than the heat lamps used to heat the outer heating zone. As for the distance between the two heat generating lamps of the same group, it is necessary to determine in combination the shapes of the cavity door 42 and the cavity 41 and the irradiation ranges of the heat generating lamps. For example, the included angle between the connecting lines of the two heating lamps in the same group and the circle center of the vacuum chamber 4 is 70 degrees, and when the carrier 5 rotates, the whole carrier 5 can be effectively irradiated.

The heating lamp comprises a base, a supporting rod, a lamp cap and an angle adjusting component, wherein the base is fixed in the vacuum chamber 4, one end of the supporting rod is connected with the base, the other end of the supporting rod is connected with the angle adjusting component, the lamp cap is arranged on the angle adjusting component, the angle adjusting component belongs to the prior art, and for example, the damping rotating shaft or other angle adjusting structures are adopted, and no further description is given here. The angle adjustment of the lamp cap can be specifically adjusted according to the actual distribution of the heating area, and the adjustment range is 0-90 degrees.

The temperature probe 3 of the original film plating machine is fixed on the top plate of the cavity 41 and is only provided with one, so that the detected temperature is the temperature above the cavity 41 but not the temperature of the surface of the product 6. In this embodiment, the temperature probe 3 is provided with a plurality of temperature probes and keeps the same distance with the product 6, so that the temperature closer to the surface temperature of the product 6 can be detected, and the power and the distribution position of the heating assembly can be adjusted. Specifically, the temperature probe 3 can be arranged at the same position as the original crystal probe of the film plating machine. A crystal probe is a probe for measuring the thickness of a film in a film plating machine and is usually mounted close to the surface to be plated. The temperature probe 3 is illustratively a thermocouple.

Before the product 6 is heated, the irradiation angle or power of the heating lamp is adjusted according to the detected temperatures of the temperature probes 3, and the temperature difference between the inner and outer sides of the carrier 5 is adjusted to 0 ℃ so as to realize uniform heating of the product 6 at all sides of the carrier 5.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The heating device is used for heating a product (6) borne on a carrier (5), and a fixing hole for fixing the product (6) is formed in the carrier (5), and is characterized in that the heating device comprises:

the heating assembly comprises a first heat source (1) and a second heat source (2) which are respectively arranged at two sides of the carrier (5), the first heat source (1) can heat the whole carrier (5), the second heat sources (2) are provided with a plurality of groups, and the plurality of groups of the second heat sources (2) are respectively in one-to-one correspondence to heat a plurality of heating areas divided on the carrier (5);

-a temperature probe (3) configured to monitor the carrier (5) temperature.

2. A heating device according to claim 1, characterized in that the heating zone of the carrier (5) comprises an inner heating zone and an outer heating zone, the second heat source (2) being divided into an inner heating source (2 a) corresponding to the inner heating zone and an outer heating source (2 b) corresponding to the outer heating zone.

3. A heating device according to claim 2, characterized in that the second heat source (2) is a heat generating lamp.

4. A heating device according to claim 3, characterized in that the internal heating source (2 a) and the external heating source (2 b) are arranged concentrically around the carrier (5).

5. The heating apparatus of claim 4 wherein the angle of the heat lamps is adjustable and the heat lamps heating the inner heating zone are at different angles than the heat lamps heating the outer heating zone.

6. A heating device according to any one of claims 2-5, characterized in that the first heat source (1) is a coiled electric resistance wire.

7. A heating device according to any one of claims 2-5, characterized in that the temperature probe (3) is provided in a plurality, the plurality of temperature probes (3) being at the same distance from the carrier (5).

8. The coating machine is characterized by comprising a vacuum chamber (4), a carrier (5) and the heating device as claimed in any one of claims 2-7, wherein the heating device is arranged in the vacuum chamber (4), the carrier (5) is a coating umbrella stand, and the coating umbrella stand is rotatably arranged at the top of the vacuum chamber (4).

9. The coating machine according to claim 8, characterized in that the first heat source (1) is fixed at the top of the vacuum chamber (4) and the second heat source (2) is fixed at the bottom of the vacuum chamber (4).

10. The coating machine according to claim 9, wherein the second heat source (2) is a light-emitting lamp, the vacuum chamber (4) is hollow and cylindrical, and is formed by sealing and enclosing a cavity (41) and a cavity door (42), the cavity (41) and the cavity door (42) both comprise side plates and top plates and bottom plates respectively arranged at two axial ends of the side plates, one group of the inner heat source (2 a) and the outer heat source (2 b) is arranged on the bottom plate of the cavity (41), and the other group of the inner heat source and the outer heat source is arranged on the bottom plate of the cavity door (42).