阅读说明：本技术 镀膜装置 (Film coating device ) 是由 不公告发明人 于 2021-01-11 设计创作，主要内容包括：本发明公开一种镀膜装置,通过在待镀膜物品的传送方向上设置跨越待镀膜物品预定停止位置的第一位置传感器,从而能够在预定的停止位置前的制动位置就开始对传送装置进行减速,使其最终停在预定的停止位置；因此待镀膜物品可以以一个较高的速度传送,到达制动位置后进行减速,避免急停,最终停留在预定停止位置附近,提高了定位的精确度,同时又提高了传送的效率；另一方面,第一位置传感器可以设置在和待镀膜物品传送路线同一高度的左右两侧,不单单只是能设置在上下两侧,故而适用范围更广。(The invention discloses a film coating device, which is characterized in that a first position sensor crossing a preset stop position of an article to be coated is arranged in the conveying direction of the article to be coated, so that the conveying device can be decelerated at a brake position before the preset stop position to finally stop at the preset stop position; therefore, the object to be coated can be conveyed at a higher speed, and is decelerated after reaching the braking position, so that sudden stop is avoided, and the object finally stays near the preset stopping position, thereby improving the positioning accuracy and the conveying efficiency; on the other hand, the first position sensors can be arranged on the left side and the right side of the same height with the conveying line of the object to be coated, and not only can be arranged on the upper side and the lower side, so that the application range is wider.)

1. A coating device comprises a chamber and a conveying device, and is characterized by further comprising a first position sensor and a main control module;

a coating assembly is arranged in the chamber;

the conveying device is used for conveying an article to be coated to the chamber for coating and conveying the coated article out of the chamber;

the first position sensor is arranged on the side, opposite to the non-film coating component of the conveying device in the chamber, of the conveying device, and the first position sensor spans a preset stop position of the article to be coated in the chamber in the conveying direction and is used for detecting the position of the article to be coated in the chamber;

the main control module is electrically connected with the transmission device and the first position sensor respectively.

2. The plating device according to claim 1, further comprising a second position sensor for detecting whether or not the object to be plated has completely entered the chamber, the position sensor being provided on a non-plating-assembly side of the transfer device in the chamber and upstream of the transfer path with respect to the first position sensor, the second position sensor being electrically connected to the main control module.

3. The plating device according to claim 1, wherein the first position sensor is a light curtain sensor, and the light projector and the light receiver of the light curtain sensor are respectively disposed on two opposite outer sidewalls of the chamber, and the light-transmitting regions are disposed at corresponding positions on the two opposite outer sidewalls.

4. The plating device according to claim 3, wherein the light curtain sensor is located near an outlet of the chamber, and a central optical axis of the light curtain sensor coincides with the predetermined stop position.

5. The plating device according to claim 2, wherein the second position sensor comprises a pair of detection members provided on opposite outer side walls of the chamber, respectively, and provided with light-transmitting regions at corresponding positions on the opposite outer side walls;

the paired detection assemblies include:

a signal transceiver and a signal reflection plate; or

A signal transmitter and a signal receiver.

6. The plating device according to claim 1, wherein the plating assembly comprises a shower electrode and a lower electrode, the shower electrode and the lower electrode being respectively located on upper and lower sides of a predetermined stop position of the object to be plated, and a projection of the shower electrode on the lower electrode covers the object to be plated.

7. The plating device according to claim 6, wherein a lifting device is provided below the lower electrode, and the lifting device drives the lower electrode to approach or separate from the object to be plated.

8. The plating device according to claim 1, wherein the conveyor comprises two rotary electromagnetic coils provided outside the chamber, and a rotor provided inside the chamber and located between the two rotary electromagnetic coils, the rotor driving the object to be plated.

9. The plating device according to claim 2, wherein the chamber has an inlet and an outlet provided with a front gate valve and a back gate valve, respectively, and the main control module is electrically connected to the front gate valve and the back gate valve, respectively, and further configured to: and when the second position sensor detects that the article to be coated completely enters the chamber, controlling the front door valve to be closed.

10. The plating device according to any one of claims 1 to 9, wherein the main control module is further configured to:

when the first position sensor detects the article to be coated, controlling the conveying device to perform speed reduction transmission according to a preset rule; and/or

When the first position sensor detects that the article to be coated reaches the braking position before the preset stop position, controlling the conveying device to perform speed reduction transmission according to a preset rule; and/or

When the first position sensor detects that the position of the article to be coated reaches a protection stop position exceeding the preset stop position, controlling the conveying device to immediately stop transmission; and/or

And when the first position sensor detects that the position of the article to be coated exceeds a preset stop position and exceeds a preset coating error range, controlling the conveying device to perform reverse transmission.

Technical Field

The invention relates to the field of PECVD (plasma enhanced chemical vapor deposition) coating, in particular to a coating device.

Background

In the existing coating system, two sensors are vertically arranged on the upper side and the lower side of a coating chamber in a carrier plate positioning mode, and whether an article to be coated is positioned to a set position is determined according to the change of luminous flux of the two sensors; if the object to be coated passes through the sensor at a high transmission speed, the transmission device immediately stops transmitting after receiving an instruction, and the transmission mode of sudden stop can cause the object to be coated to continuously slide forward for a certain distance due to inertia, so that inaccurate positioning is caused; if the object to be coated is conveyed at a lower running speed, the conveying efficiency is influenced;

on the other hand, in Plasma Enhanced Chemical Vapor Deposition (PECVD) coating, large-area spray electrodes are arranged on the upper side and the lower side in the chamber, which occupies most of the space of the upper part and the lower part of the chamber, thereby being inconvenient for mounting a vertically arranged sensor.

Disclosure of Invention

The invention mainly aims to provide a film coating device, and aims to solve the problems that in the prior art, an object to be coated is inaccurate in positioning during high-speed conveying, low in low-speed conveying efficiency and small in application range of an upper sensor and a lower sensor.

In order to achieve the above object, the present invention provides a coating apparatus, comprising: the device comprises a chamber, a conveying device, a first position sensor and a main control module;

a coating assembly is arranged in the chamber;

the conveying device is used for conveying an article to be coated to the chamber for coating and conveying the coated article out of the chamber;

the first position sensor is arranged on the side, opposite to the non-film coating component of the conveying device in the chamber, of the conveying device, and the first position sensor spans a preset stop position of the article to be coated in the chamber in the conveying direction and is used for detecting the position of the article to be coated in the chamber;

the main control module is electrically connected with the conveying device and the first position sensor respectively.

Preferably, the coating device further comprises a second position sensor for detecting whether the article to be coated completely enters the chamber, the position sensor is arranged on the side of the non-coating component of the conveying device in the chamber and is located on the upstream of the conveying path relative to the first position sensor, and the second position sensor is electrically connected with the main control module.

Preferably, the first position sensor is a light curtain sensor, a light projector and a light receiver of the light curtain sensor are respectively arranged on two opposite outer side walls of the chamber, and light transmission regions are arranged at corresponding positions on the two opposite outer side walls.

Preferably, the light curtain sensor is close to the outlet of the chamber, and the central optical axis of the light curtain sensor coincides with the predetermined stop position.

Preferably, the second position sensor comprises a pair of detection assemblies, the pair of detection assemblies are respectively arranged on two opposite outer side walls of the chamber, and light-transmitting areas are arranged at corresponding positions on the two opposite outer side walls;

the paired detection assemblies include:

a signal transceiver and a signal reflection plate; or

A signal transmitter and a signal receiver.

Preferably, the coating assembly comprises a spray electrode and a lower electrode, the spray electrode and the lower electrode are respectively located at the upper side and the lower side of a preset stop position of the article to be coated, and a projection of the spray electrode on the lower electrode covers the article to be coated.

Preferably, a lifting device is arranged below the lower electrode, and the lifting device drives the lower electrode to approach or be far away from the object to be coated.

Preferably, the conveying device comprises two rotary electromagnetic coils and a rotor, the two rotary electromagnetic coils are arranged outside the cavity, the rotor is arranged in the cavity and positioned between the two rotary electromagnetic coils, and the rotor drives the object to be coated.

Preferably, the inlet and the outlet of the chamber are respectively provided with a front gate valve and a back gate valve, the main control module is electrically connected with the front gate valve and the back gate valve, and the main control module is further configured to: and when the second position sensor detects that the article to be coated completely enters the chamber, controlling the front door valve to be closed.

Preferably, the main control module is further configured to:

when the first position sensor detects the article to be coated, controlling the conveying device to perform speed reduction transmission according to a preset rule; and/or

When the first position sensor detects that the article to be coated reaches the braking position before the preset stop position, controlling the conveying device to perform speed reduction transmission according to a preset rule; and/or

When the first position sensor detects that the position of the article to be coated reaches a protection stop position exceeding the preset stop position, controlling the conveying device to immediately stop transmission; and/or

And when the first position sensor detects that the position of the article to be coated exceeds a preset stop position and exceeds a preset coating error range, controlling the conveying device to perform reverse transmission.

According to the technical scheme, the first position sensor is arranged and spans the preset stop position of the article to be coated in the chamber in the transmission direction of the conveying device, so that the article to be coated can be detected by the first position sensor before reaching the preset stop position, and further the article to be coated is decelerated in advance, the article to be coated is prevented from continuously moving forwards due to inertia caused by sudden stop, and the positioning precision is improved; on the other hand, the first position sensor of the technical scheme only needs to be capable of detecting the position of the object to be coated on the conveying path, does not need to be vertically arranged up and down, and is wide in application range.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a coating apparatus according to an embodiment of the present invention.

FIG. 2 is a top view of the coating device of FIG. 1;

FIG. 3 is a schematic structural diagram of an embodiment of a first position sensor of the coating device in FIG. 1.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a film coating device.

In an embodiment of the present invention, as shown in fig. 1 and 2, the plating device includes: the coating device comprises a chamber 200, wherein the chamber 200 is provided with an inlet and an outlet, a front door valve 210 and a rear door valve 220 are respectively arranged at the inlet and the outlet, coating assemblies 500 are arranged at the upper side and the lower side in the chamber 200, a conveying path of a conveying device 700 and a preset stop position of an article 600 to be coated are arranged between the coating assemblies 500 at the upper side and the lower side, the conveying device 700 conveys the article 600 to be coated to a preset position in the chamber 200 from the inlet, coating is started, and after coating is finished, the coated article is conveyed out of the chamber 200 from the outlet;

the film coating device further comprises a main control module and a first position sensor 100, wherein the upper side and the lower side of the chamber 200 are both provided with film coating assemblies 500, after film coating is started, the film coating assemblies 500 on the upper side and the lower side are used for coating an article 600 to be coated, so that the space required to be occupied when the upper film coating assembly 500 and the lower film coating assembly 500 are used for coating films when the first position sensor 100 is arranged, in the embodiment, the first position sensor 100 is a light curtain sensor, the light curtain sensor is provided with a plurality of light projectors 110 and a plurality of corresponding light receivers 120 which are continuously arranged, the light projectors 110 can emit optical axes, and the corresponding light receivers 120 can receive the optical axes emitted by the light projectors 110 to complete signal transmission; when the device is arranged, the light projector 110 and the light receiver 120 are respectively arranged at two sides of the conveying path, and the height of the light projector 110 and the light receiver 120 is flush with the article 600 to be coated on the conveying device 700, so that when the article 600 to be coated enters the chamber 200 along with the conveying device 700 and moves between the light projector 110 and the light receiver 120, the article 600 to be coated can block the optical axis emitted by the light projector 110, the corresponding light receiver 120 cannot receive the optical axis, the signal transmission is interrupted, and the position information of the article 600 to be coated can be judged according to the positions of the light projector 110 and the light receiver 120 with the interrupted signals; when the light curtain sensor is arranged, the lengths of the light projector 110 and the light receiver 120 need to be ensured to span the preset stop position of the article 600 to be coated, so that the article 600 to be coated can be detected no matter where the article 600 to be coated is conveyed; it should be noted that, in the embodiment, the light projector 110 and the light receiver 120 are respectively disposed on two opposite outer sidewalls of the chamber 200, so that a light-transmitting region, such as a light-transmitting window 230, needs to be disposed at a corresponding position of the two opposite outer sidewalls to ensure that the light of the light projector 110 can smoothly penetrate through for being received by the light receiver 120. In this embodiment, the first position sensor 100 can be disposed on the left and right sides of the conveying path of the object to be coated, and can be disposed on both the upper and lower sides, so that the application range is wider.

Further, referring to fig. 3, in the present embodiment, the light curtain sensor has 100 light projectors 110: t is₁、T₂、T₃……T₁₀₀And 100 photo receivers 120 matched thereto: t is_1’、T_2’、T_3’……T_100’The light curtain sensor can detect objects within 200mm by arranging the light projector 110 and the light receiver 120 at intervals of 2mm, and arranging the 50 th light projector 110T₅₀And a light receiver 120T_50’Is arranged at a preset stop position of the article 600 to be coated; when the article 600 to be coated passes between the first light projector 110 and the light receiver 120, the main control module can obtain the position information of the article, and further control the conveying device 700 to decelerate; for example, the first light projector 110T is used in the present embodiment₁And a light receiver 120T_1’The position of (2) is used as a braking position, when the first light receiver 120 cannot receive the signal of the first light projector 110, the main control module judges that the article 600 to be coated reaches the braking position, and starts to control the conveying device 700 to decelerate, and the distance between the first light receiver 120 and the light projector 110 and the preset stopping position is 100mm, so that the main control module decelerates the conveying device 700 according to the conveying speed of the conveying device 700 and the deceleration distance, wherein the deceleration mode can be freely selected, can be uniform deceleration, or can be a combination of other deceleration modes, and finally the article 600 to be coated is stopped at the preset stopping position through the deceleration distance of 100 mm; the technical scheme firstly passes through the speed sumThe deceleration distance is calculated to formulate a deceleration scheme, so that the positioning precision can be improved, and on the other hand, a buffer deceleration distance is provided, so that the object 600 to be coated can be prevented from continuously moving forwards under the inertia effect due to sudden stop, and the positioning precision is further improved; of course, in other embodiments, the braking position may also be set at other positions, for example, at the tenth light projector 110 and the light receiver 120, or at the twentieth light projector 110 and the light receiver 120, and the specific braking position is set according to the speed of the conveying device 700 and the size of the interval between the light projectors 110, which is not limited in this embodiment.

Further, with continued reference to fig. 2 and fig. 3, in the previous embodiment, the article 600 to be coated starts to decelerate from the first light projector 110 and the light receiver 120, and finally stays between the fiftieth light projector 110 and the light receiver 120, however, due to the influence of other factors in the actual coating process, the position where the article 600 to be coated may actually stop is not the theoretical position, for example, before or after the theoretical position, and it needs to be determined whether the distance between the actual staying position and the theoretical position is within the allowable range; if the allowable error of the actual stop position of the article 600 to be coated is set within +/-4 mm, after the article 600 to be coated finally stops, the last light receiver 120 which stops receiving the signal of the light projector 110 is the actual stop position, and if the 55 th light receiver 120 is the last stop signal, it can be judged that the article 600 to be coated finally stays between the 55 th light receiver 120 and the light projector 110, so the distance from the actual stop position to the predetermined stop position is 10mm from the 55 th light projector 110 to the 50 th light projector 110, that is, the actual error of the current transmission is 10mm, which exceeds the allowable error by 4mm, and secondary adjustment is needed; the main control module controls the conveying device 700 to convey in the reverse direction, and conveys the article 600 to be coated to the error range allowed by theory so as to improve the positioning precision of the article; according to the technical scheme, the actual stop position of the article 600 to be coated is detected, the distance between the actual stop position and the theoretical position is used for judging whether the transmission meets the requirement or not, and if the difference exceeds the tolerance, fine adjustment is performed, so that the positioning precision of the article 600 to be coated is improved, and the coating quality is further improved.

In another embodiment of the present embodiment, the chamber inlet and outlet are provided with a front gate valve 210 and a rear gate valve 220, respectively, and with continued reference to fig. 2 and 3, the above embodiments respectively set forth the transfer modes of the predetermined stop position and the error-allowable position, and in other embodiments, a protective stop position, i.e., the position that can be reached by the transfer device 700 farthest away, may be provided; in the actual conveying process, interference factors such as line faults, deceleration fault lamps and the like exist, the conveying device 700 cannot be decelerated and stopped timely, and continues to move forwards after exceeding the error range, if the conveying device is not stopped timely, the conveying device has the risk of impacting the rear door valve 220 of the chamber 200, and therefore a protection stopping position is set; if the protection stop position is set at the position of the 80 th light projector 110 and the light receiver 120, when the 80 th light receiver 120 stops receiving signals, the main control module can judge that the conveying device 700 has reached the farthest conveying distance at this time, and needs to immediately cut off the power of the conveying device 700 to stop conveying the article 600 to be coated, so that the method can effectively prevent the article 600 to be coated from colliding with the back door valve 220, and the use is safer and more reliable.

Further, in another embodiment, as shown in fig. 1 and fig. 2, the film coating device is further provided with a second position sensor 400, the second position sensor 400 is a combination of a pair of detecting components, for example, a signal transceiver and a signal reflecting plate, the signal transceiver transmits a signal, and the signal is reflected by the signal reflecting plate and then received by the signal transceiver; the signal transmitter 410 and the signal receiver 420 can also be combined, the signal transmitter 410 transmits signals, and the signal receiver 420 receives signals to complete the transmission of the signals; in this embodiment, taking the signal emitter 410 and the signal receiver 420 as an example, when the installation is performed, the signal emitter 410 and the signal receiver are respectively disposed on two sides of the conveying device 700, the height is consistent with the height of the article 600 to be coated, and the signal emitter 410 and the signal receiver 420 are upstream of the first sensor on the path of the article 600 to be coated, ensuring that the article 600 to be coated passes the second position sensor 400 first and the first position sensor 100, in addition, it is ensured that the second position sensor 400 is located at the inner side of the front valve, and it is ensured that the article 600 to be coated can be detected by the second position sensor 400 after entering the chamber 200, in this embodiment, the signal receiver 420 and the signal transmitter 410 are respectively arranged at two opposite outer side walls of the chamber 200, so that light-transmitting regions, such as the light-transmitting through 230, need to be arranged at corresponding positions of the two opposite outer side walls of the chamber 200, and it is ensured that the signal transmitted by the signal transmitter 410 can penetrate through the side walls of the chamber 200 to be received by the signal receiver 420;

specifically, when the article 600 to be coated does not enter the front door valve 210, the signal receiver 420 may receive the transmission signal of the signal transmitter 410 and feed back a signal "1" to the main control module;

when the article 600 to be coated enters the front door valve 210, the transmitting signal is blocked, the signal receiver 420 cannot receive the transmitting signal, and the signal fed back to the main control module is changed from '1' to '0';

when the article 600 with a coating film to be coated completely enters the front gate valve 210, the signal receiver 420 receives the transmitting signal again, the feedback signal changes from '0' to '1', and the main control module can judge that the article 600 with a coating film completely enters the chamber 200 at the moment, and can directly close the front gate valve 210 without closing the front gate valve 210 after the article 600 with a coating film completely stops, so that the coating period is saved, and the coating efficiency is improved.

Further, in another embodiment, as shown in fig. 1, the coating apparatus further includes: the spraying assembly 500, the coating assembly 500 includes a spraying electrode 510 and a lower electrode 520, the spraying electrode 510 is located at a position of the chamber 200 close to the upper cover, the spraying electrode 510 is connected with an air path outside the chamber 200, the lower electrode 520 is located at the bottom of the chamber 200, the article 600 to be coated is finally stopped between the spraying electrode 510 and the lower electrode 520, the vertically downward projection of the spraying electrode 510 can completely cover the article 600 to be coated, so as to ensure the coating quality, so that all positions of the article 600 to be coated can be coated, and the coating leakage is prevented.

With continued reference to fig. 1, in another embodiment, the lower electrode 520 is further provided with a lifting device 521, the lifting device 521 is disposed at the bottom of the outer side of the chamber 200, and after the movement of the article 600 to be coated stops, the lifting device 521 lifts the lower electrode 520 upward for carrying the article 600 to be coated, which is convenient for use.

Further, referring to fig. 1, in another embodiment, the conveying device 700 includes two rotating electromagnetic coils and a rotor, the two rotating electromagnetic coils are disposed on two sides of the outer side wall of the chamber 200, the rotor is disposed in the chamber 200 and located between the two rotating electromagnetic coils, the rotor drives the object 600 to be coated, the rotating electromagnetic coils located outside the chamber 200 are connected to the main control module, and the main control module controls whether the rotating electronic coils are powered on or not, so as to control whether the rotor located in the chamber 200 rotates or not.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.