Coating device

Abstract

The coating device comprises a coating mechanism, a film thickness detection mechanism and a code spraying mechanism which are sequentially arranged in the film running direction, the coating mechanism comprises a coating roller, a coating assembly and a distance adjusting assembly, and a film passing gap is formed between the coating assembly and the coating roller. The distance adjusting assembly is used for adjusting the distance of the film passing gap, and the film thickness detection mechanism is in signal connection with the coating assembly and the distance adjusting assembly and used for controlling the coating speed of the coating mechanism and / or operation of the distance adjusting assembly. The coating device has the advantages of being beneficial to guaranteeing the precision, stability and uniformity of the coating thickness, being beneficial to accurately rejecting unqualified products and the like.

Description

Technical Field

[0001] This utility model relates to the field of food and pharmaceutical packaging machinery and equipment technology, specifically to a coating device. Background Technology

[0002] With the rapid development of technology and the steady improvement of people's living standards, health has become a primary concern in society. However, injections and oral medications may not meet the needs of many patients. Therefore, as research has progressed, a third method of drug administration has emerged—transdermal patch delivery. This method involves evenly coating the drug onto a roll of material, packaging it through appropriate processes, and then applying it to the skin when needed. The drug is absorbed through the skin in close contact with the skin to treat various diseases. New transdermal formulations include oral dissolving films, transdermal patches, gel patches, and heat-fused patches; compared to traditional rubber patches, they offer advantages such as better drug release, fewer side effects, and ease of use.

[0003] As one of the most critical components in the production of transdermal formulations, the coating machine's core technologies lie in ensuring and controlling the accuracy and stability of the coated product's thickness (gram weight), and in detecting and rejecting defective products. Existing coating machines are not conducive to ensuring the accuracy, stability, and uniformity of the coating thickness, and also to accurately rejecting defective products. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a coating device that is conducive to ensuring the accuracy, stability and uniformity of coating thickness and to accurately rejecting defective products.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A coating apparatus includes a coating mechanism, a film thickness detection mechanism, and a coding mechanism arranged sequentially along the film feeding direction. The coating mechanism includes a coating roller, a coating assembly, and a spacing adjustment assembly. A film-passing gap is formed between the coating assembly and the coating roller. The spacing adjustment assembly is used to adjust the spacing of the film-passing gap. The film thickness detection mechanism is signal-connected to the coating assembly and the spacing adjustment assembly, and is used to control the coating speed of the coating mechanism and / or the operation of the spacing adjustment assembly.

[0007] As a further improvement to the above technical solution:

[0008] The coating mechanism also includes a spacing detection mechanism, which is signal-connected to the coating assembly and the spacing adjustment assembly, and is used to detect and provide feedback on the spacing of the film gap.

[0009] The film thickness detection mechanism is signal-connected to the coding mechanism and is used to control the coding mechanism to mark qualified and unqualified products.

[0010] The coding mechanism marks the qualified products in the qualified marking area and the unqualified products in the unqualified marking area.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] The working process of the coating device of this utility model is as follows: the film thickness detection mechanism detects the film thickness in real time; the operator or computer judges whether the detection value of the film thickness detection mechanism is within the required film thickness range; if so, the coating speed and the size of the film gap of the coating mechanism are kept constant; if not, the coating speed and / or the spacing adjustment component of the coating mechanism are controlled until the detection value of the film thickness detection mechanism is within the required film thickness range; or if not, during the production process, the coating speed of the coating mechanism is first controlled to adjust the film thickness, and then the spacing adjustment component is selectively controlled to adjust the film gap until the detection value of the film thickness detection mechanism is within the required film thickness range; or if not, during trial production or when changing coating specifications, the spacing adjustment component is first controlled to adjust the film gap, and then the coating speed of the coating mechanism is selectively controlled to adjust the film thickness until the detection value of the film thickness detection mechanism is within the required film thickness range; or if not, the coating speed and the spacing adjustment component of the coating mechanism are controlled simultaneously until the detection value of the film thickness detection mechanism is within the required film thickness range. Therefore, this coating device helps to ensure the accuracy, stability and uniformity of the coating thickness, and can promptly and accurately detect defective products through the film thickness detection mechanism, which facilitates the accurate rejection of defective products. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the coating device of this utility model.

[0014] The labels in the diagram represent:

[0015] 1. Coating mechanism; 11. Coating roller; 12. Coating assembly; 13. Gap adjustment assembly; 14. Gap detection mechanism; 2. Film thickness detection mechanism; 3. Marking mechanism; 4. Film gap. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Figure 1 An embodiment of the coating apparatus of this utility model is shown. The coating apparatus of this embodiment includes a coating mechanism 1, a film thickness detection mechanism 2 and a coding mechanism 3 arranged sequentially along the film-moving direction. The coating mechanism 1 includes a coating roller 11, a coating assembly 12 and a spacing adjustment assembly 13. A film-passing gap 4 is formed between the coating assembly 12 and the coating roller 11. The spacing adjustment assembly 13 is used to adjust the spacing of the film-passing gap 4. The film thickness detection mechanism 2 is signal-connected to the coating assembly 12 and the spacing adjustment assembly 13 and is used to control the coating speed of the coating mechanism 1 and / or the operation of the spacing adjustment assembly 13.

[0021] The working process of this coating device is as follows: The film thickness detection mechanism 2 detects the film thickness in real time; the operator or computer determines whether the detection value of the film thickness detection mechanism 2 is within the required film thickness range; if yes, the coating speed of the coating mechanism 1 and the size of the film gap 4 are kept constant; if no, the coating speed of the coating mechanism 1 and / or the spacing adjustment component 13 are controlled until the detection value of the film thickness detection mechanism 2 is within the required film thickness range; or if no, during production, the coating speed of the coating mechanism 1 is first controlled to adjust the film thickness, and then the spacing adjustment component 13 is selectively controlled to adjust the film gap 4 until the detection value of the film thickness detection mechanism 2 is within the required film thickness range; or if no, during trial production or when changing coating specifications, the spacing adjustment component 13 is first controlled to adjust the film gap 4, and then the coating speed of the coating mechanism 1 is selectively controlled to adjust the film thickness until the detection value of the film thickness detection mechanism 2 is within the required film thickness range; or if no, the coating speed of the coating mechanism 1 and the spacing adjustment component 13 are controlled simultaneously until the detection value of the film thickness detection mechanism 2 is within the required film thickness range. Therefore, this coating device helps to ensure the accuracy, stability and uniformity of the coating thickness, and can detect defective products in a timely and accurate manner through the film thickness detection mechanism 2, which facilitates the accurate rejection of defective products.

[0022] Furthermore, in this embodiment, the coating mechanism 1 also includes a spacing detection mechanism 14, which is signal-connected to the coating assembly 12 and the spacing adjustment assembly 13, and is used to detect and provide feedback on the spacing of the film-transfer gap 4. The spacing detection mechanism 14 can detect and provide feedback on the spacing of the film-transfer gap 4 in real time, and promptly detect and provide feedback on the adjustment result of the spacing adjustment assembly 13 on the spacing of the film-transfer gap 4.

[0023] Furthermore, in this embodiment, the film thickness detection mechanism 2 is signal-connected to the coding mechanism 3, and is used to control the coding mechanism 3 to mark qualified and unqualified products.

[0024] Furthermore, in this embodiment, the coding mechanism 3 performs coding on the qualified marking area of ​​qualified products and on the unqualified marking area of ​​unqualified products.

[0025] The specific process is as follows: the film thickness detection mechanism 2 detects the film thickness in real time; the operator or computer judges whether the detection value of the film thickness detection mechanism 2 is within the required film thickness range; if so, the coating speed of the coating mechanism 1 and the size of the film gap 4 are kept constant, and the inkjet printing mechanism 3 is controlled to print and mark qualified products; if not, the coating speed of the coating mechanism 1 and / or the spacing adjustment component 13 are controlled to operate until the detection value of the film thickness detection mechanism 2 is within the required film thickness range, and the inkjet printing mechanism 3 is controlled to print and mark unqualified products.

[0026] It should be noted that the film thickness detection mechanism 2 is signal-connected to the coating assembly 12 and the spacing adjustment assembly 13, controlling the coating speed of the coating assembly 1 and / or the operation of the spacing adjustment assembly 13, without requiring any degree of improvement.

[0027] It should be noted that the film thickness detection mechanism 2 is signal-connected to the coding mechanism 3, and the process of controlling the coding mechanism 3 to mark qualified and unqualified products does not require any modifications. In other words, all control parts mentioned in this specification can be implemented through their corresponding mechanical structures and conventional control components, and the control process does not require any modifications.

[0028] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A coating apparatus, characterized in that: The system includes a coating mechanism (1), a film thickness detection mechanism (2), and a coding mechanism (3) arranged sequentially along the film-moving direction. The coating mechanism (1) includes a coating roller (11), a coating assembly (12), and a spacing adjustment assembly (13). A film-passing gap (4) is formed between the coating assembly (12) and the coating roller (11). The spacing adjustment assembly (13) is used to adjust the spacing of the film-passing gap (4). The film thickness detection mechanism (2) is signal-connected to the coating assembly (12) and the spacing adjustment assembly (13) and is used to control the coating speed of the coating mechanism (1) and / or the operation of the spacing adjustment assembly (13).

2. The coating apparatus according to claim 1, characterized in that: The coating mechanism (1) further includes a spacing detection mechanism (14), which is signal-connected to the coating assembly (12) and the spacing adjustment assembly (13) and is used to detect and provide feedback on the spacing of the film gap (4).

3. The coating apparatus according to claim 1, characterized in that: The film thickness detection mechanism (2) is connected to the coding mechanism (3) by signal, and is used to control the coding mechanism (3) to mark qualified and unqualified products.

4. The coating apparatus according to claim 3, characterized in that: The coding mechanism (3) performs coding in the qualified marking area of ​​qualified products and in the unqualified marking area of ​​unqualified products.

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