Release agent coating device

Abstract

The utility model discloses a release agent coating device which comprises a coating unit, the coating unit comprises a coating chamber and two sets of coating assemblies which are correspondingly arranged up and down, a steel plate is located between the two sets of coating assemblies, and the two sets of coating assemblies are matched to achieve roller coating of the two surfaces of the steel plate; the liquid storage tank is arranged in the coating chamber and used for temporarily storing a release agent, the liquid conveying roller is rotationally installed in the coating chamber and located above the liquid storage tank, the coating roller is rotationally installed in the coating chamber and used for coating the release agent on the surface of the steel plate, and the liquid conveying roller is connected with a driving part for driving the liquid conveying roller to rotate. The liquid conveying roller abuts against the coating roller, and the release agent in the liquid storage tank is brought to the circumferential face of the coating roller. The two coating rollers are matched to coat the steel plate, so that the coating amount of the release agent is favorably controlled, the coating synchronism is good, and release agent films with good thickness consistency can be obtained on the upper surface and the lower surface of the steel plate.

Description

Technical Field

[0001] The utility model relates to the field of coating equipment, in particular to a release agent coating device. Background Art

[0002] The steel sheets used in the PCB lamination process are prone to PP powder adhesion during lamination. During the lamination process, overflowing resin can easily adhere to the steel sheets, making them difficult to clean. This can lead to dents and other defects when the sheets are subsequently reused. Therefore, in the PCB lamination process, a release agent coating process is often added between the washing and drying stages of the steel sheet cleaning process. The dried release agent forms a thin film on the steel sheet surface, preventing direct contact between PP powder or resin.

[0003] At present, the existing utility model patent CN205288831U discloses a release agent coating device: a release agent coating device, comprising a steel plate, an upper coating wheel and a lower coating wheel arranged above and below the steel plate, wherein a dropper for dripping the release agent onto the upper surface of the steel plate is provided above the steel plate, and a liquid storage tank for immersing the lower coating wheel in the release agent is provided below the lower coating wheel.

[0004] The above-mentioned release agent coating device has the following disadvantages: the thickness of the release agent film formed on the upper and lower surfaces of the steel plate is prone to inconsistency, and adding release agent to the upper surface through a dropper can easily lead to uneven distribution of release agent on the upper surface of the steel plate, resulting in the problem that the upper surface of the steel plate cannot be completely covered by the release agent. Utility Model Content

[0005] In order to improve the problem in the related art that the thickness of the release agent film on the upper and lower surfaces of the steel plate is inconsistent and it is difficult to apply the release agent film evenly, the present application provides a release agent coating device.

[0006] A release agent coating device includes a coating unit, wherein the coating unit includes a coating chamber and two sets of coating components arranged correspondingly above and below, a steel plate is located between the two sets of coating components, and the two sets of coating components cooperate to achieve roller coating on both surfaces of the steel plate;

[0007] Among them, each group of the coating components includes a liquid storage tank arranged in the coating chamber for temporarily storing the release agent, a liquid transfer roller rotatably installed in the coating chamber and located above the liquid storage tank, and a coating roller rotatably installed in the coating chamber and coating the release agent on the surface of the steel plate, wherein the liquid transfer roller is connected to a driving member for driving the liquid transfer roller to rotate, the liquid transfer roller is in contact with the coating roller, and brings the release agent in the liquid storage tank to the circumferential surface of the coating roller.

[0008] In the present application, the liquid transfer roller and the coating roller in each coating assembly cooperate with each other. When the release agent is applied to the steel plate, the liquid transfer roller evenly transfers the release agent in the liquid reservoir to the surface of the liquid transfer roller during rotation, ensuring that the release agent is stably and evenly transferred from the liquid reservoir to the surface of the steel plate. The coating roller abuts the liquid transfer roller. Under the action of friction, the liquid transfer roller drives the coating roller to rotate and evenly transfers the release agent on the circumference of the liquid transfer roller to the coating roller. At this time, the steel plate is fed between the two coating rollers, and the steel plate moves at a constant speed. The two coating rollers cooperate with each other to achieve uniform coating of the release agent on the upper and lower surfaces of the steel plate. In addition, the two coating rollers cooperate to coat the steel plate, which is conducive to controlling the amount of release agent applied, and the coating is well synchronized, so that a release agent film with a consistent thickness can be obtained on the upper and lower surfaces of the steel plate.

[0009] In some specific embodiments, the two corresponding upper and lower coating rollers rotate in opposite directions, and the upper coating roller abuts against the upper surface of the steel plate, and the lower coating roller abuts against the lower surface of the steel plate.

[0010] In the present application, the two corresponding upper and lower coating rollers rotate in opposite directions and respectively contact the upper and lower surfaces of the steel plate, which is beneficial to controlling the coating amount of the release agent and achieving uniform coating on different positions of the steel plate surface.

[0011] In some specific embodiments, the liquid storage tank is provided with an overflow port.

[0012] In this application, the liquid storage tank is provided with an overflow port, so that the excess release agent can be discharged in time during the coating process, reducing the uneven coating caused by the accumulation of release agent in the liquid storage tank, thereby ensuring the uniform distribution of the release agent on the surface of the steel plate and improving the coating quality.

[0013] In some specific embodiments, the release agent coating device further includes a liquid supply unit, which includes a release agent tank body and a pumping component, the liquid inlet end of the pumping component is connected to the release agent tank body, and the liquid outlet end of the pumping component is connected to the liquid storage tank.

[0014] In this application, a liquid supply unit is added to ensure that the release agent can be stably and evenly supplied to the liquid storage tank, thereby achieving uniform coating of the release agent on the surface of the steel plate and preventing the problem of inconsistent film thickness caused by uneven supply of the release agent.

[0015] In some specific embodiments, the release agent coating device further includes a liquid outlet unit, a liquid inlet end of the liquid outlet unit is connected to the coating chamber, and a liquid outlet end of the liquid outlet unit is connected to the release agent tank.

[0016] In the present application, a liquid outlet unit is added to realize the circulation flow of the release agent from the coating chamber to the release agent tank, thereby ensuring the effective recovery and reuse of the release agent and preventing the release agent from being wasted.

[0017] In some specific embodiments, a filter is connected to the liquid outlet unit, and the filter is used to filter the release agent flowing out of the coating chamber.

[0018] In the present application, the filter can effectively filter the release agent flowing out of the coating chamber, prevent impurities in the release agent from entering the liquid storage tank, and ensure the stability and reliability of the release agent recycling.

[0019] In some specific embodiments, a scraper assembly is provided in the coating chamber, and the scraper assembly includes a first scraper and a second scraper. The first scraper is used to scrape the coating roller, and the second scraper is used to scrape the liquid transfer roller. The first scraper and the second scraper can be lifted and installed in the coating chamber.

[0020] Since the release agent is easy to crystallize after long-term use, and considering that the transfer roller and the coating roller may have residual crystallized release agent, thereby affecting the subsequent release agent coating thickness of the steel plate, the present application adds a scraper assembly for regularly cleaning the transfer roller and the coating roller to eliminate the problem that the presence of crystallized release agent affects the release agent coating thickness on the steel plate surface. In addition, the first scraper and the second scraper can be installed in the coating chamber in a lifting manner. When the coating roller is coating the steel plate with release agent, the first scraper can be driven away from the coating roller and the second scraper can be driven away from the transfer roller to ensure stable coating of the coating roller. When it is necessary to clean the residual crystallized release agent on the coating roller and the transfer roller, the first scraper is driven to abut against the circumference of the coating roller and the second scraper is driven to abut against the surface of the transfer roller, and the transfer roller is started to drive the coating roller to rotate, so that the crystallized release agent on the circumference of the coating roller is removed by the first scraper, and the crystallized release agent on the surface of the transfer roller is removed by the second scraper.

[0021] In some specific embodiments, the liquid storage tank is connected to a discharge pipe, and the discharge pipe discharges the release agent in the liquid storage tank into the coating chamber, wherein the discharge pipe is provided with a discharge valve.

[0022] After the scraped crystallized release agent enters the liquid storage tank, if the crystallized release agent is not separated from the release agent in the liquid storage tank, it will affect the uniformity of the release agent coating on the steel plate surface. For this reason, this application adds a scraper component and simultaneously connects a discharge pipe to the liquid storage tank. After the surface cleaning of the coating roller and the liquid transfer roller is completed, the release agent in the liquid storage tank is first discharged into the coating chamber, and then the release agent in the liquid storage tank is replaced through the liquid inlet unit, and then the steel plate is roller-coated with the release agent, which is conducive to achieving uniform coating of the release agent on the surface of the steel plate.

[0023] In summary, this application has at least the following beneficial technical effects:

[0024] (1) In the present application, the liquid transfer roller and the coating roller in each coating assembly cooperate with each other. When the release agent is applied to the steel plate, the liquid transfer roller evenly brings the release agent in the liquid storage tank to the surface of the liquid transfer roller during the rotation process to ensure that the release agent is stably and evenly transferred from the liquid storage tank to the surface of the steel plate. The coating roller and the liquid transfer roller are in contact with each other. Under the action of friction, the liquid transfer roller drives the coating roller to rotate and evenly transfers the release agent on the peripheral surface of the liquid transfer roller to the coating roller. At this time, the steel plate is fed between the two coating rollers, and the steel plate moves at a uniform speed. The two coating rollers cooperate with each other to achieve uniform coating of the release agent on the upper and lower surfaces of the steel plate. In addition, the two coating rollers cooperate to coat the steel plate, which is conducive to controlling the coating amount of the release agent, and the coating is synchronized well, so that a release agent film with good thickness consistency can be obtained on the upper and lower surfaces of the steel plate.

[0025] (2) The present application adds a scraper assembly for regularly cleaning the liquid transfer roller and the coating roller to eliminate the problem that the presence of crystallized release agent affects the thickness of the release agent coating on the steel plate surface. In addition, the first scraper and the second scraper can be installed in the coating chamber in a lifting manner. When the coating roller is coating the steel plate with release agent, the first scraper can be driven away from the coating roller and the second scraper can be driven away from the liquid transfer roller to ensure stable coating of the coating roller. When it is necessary to clean the crystallized release agent remaining on the coating roller and the liquid transfer roller, the first scraper is driven to abut against the circumference of the coating roller and the second scraper is driven to abut against the surface of the liquid transfer roller, and the liquid transfer roller is started to drive the coating roller to rotate, so that the crystallized release agent on the circumference of the coating roller is removed by the first scraper, and the crystallized release agent on the surface of the liquid transfer roller is removed by the second scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a release agent coating device according to Example 1 of the present application.

[0027] Figure 2 This is a structural schematic diagram of a release agent coating device in Example 2 of the present application.

[0028] Description of reference numerals:

[0029] 1. Liquid inlet unit; 11. Release agent tank; 12. Pumping assembly; 2. Coating unit; 3. Coating chamber; 4. Coating assembly; 41. Liquid storage tank; 411. Overflow port; 42. Liquid transfer roller; 43. Coating roller; 5. Liquid outlet unit; 6. Filter; 7. Steel plate; 8. Scraper assembly; 81. First scraper; 82. Second scraper; 9. Discharge pipe; 91. Discharge valve. DETAILED DESCRIPTION

[0030] The following is a further description of a release agent coating device of the present application in conjunction with the accompanying drawings.

[0031] Example 1

[0032] Reference Figure 1 The release agent coating device disclosed in this embodiment includes a liquid supply unit, a coating unit 2 and a liquid discharge unit 5.

[0033] Reference Figure 1 The liquid supply unit includes a release agent tank 11 and a pumping assembly 12. The release agent tank 11 is used to contain the release agent. The liquid inlet end of the pumping assembly 12 is connected to the release agent tank 11 and is used to pump the release agent in the release agent tank 11 into the coating unit 2.

[0034] Reference Figure 1 The coating unit 2 includes a coating chamber 3 and two sets of coating components 4 arranged correspondingly above and below. Each set of coating components 4 includes a liquid storage tank 41 arranged in the coating chamber 3, a liquid transfer roller 42 rotatably installed in the coating chamber 3, and a coating roller 43 rotatably installed in the coating chamber 3.

[0035] Reference Figure 1 The liquid reservoir 41 is connected to the liquid outlet of the pumping assembly 12. Under the action of the pumping assembly 12, the release agent in the release agent tank body 11 is pumped into the liquid reservoir 41. The liquid reservoir 41 is provided with an overflow port 411, and the height of the overflow port 411 is flush with the lowest point of the liquid transfer roller 42.

[0036] Reference Figure 1 The transfer roller 42 is located directly above the liquid reservoir 41 and is connected to a drive element that drives the transfer roller 42 to rotate circumferentially about its own central axis. The drive element can be a motor or other drive element capable of driving the transfer roller 42 to rotate about its own central axis. In this embodiment, the lowest point of the transfer roller 42 contacts the release agent in the liquid reservoir 41. When the drive element activates the transfer roller 42 to rotate, the transfer roller 42 can transfer the release agent in the liquid reservoir 41 to the circumferential surface of the transfer roller 42.

[0037] Reference Figure 1The coating roller 43 is in contact with the liquid transfer roller 42. When the liquid transfer roller 42 rotates, the friction force drives the coating roller 43 to rotate. The steel plate 7 is located between the upper and lower coating rollers 43, and the steel plate 7 is connected to the coating chamber 3 in a sliding manner along the forward direction of the steel plate 7. The side wall of the coating chamber 3 is provided with a power structure that drives the steel plate 7 to move at a uniform speed. The upper coating roller 43 is in contact with the upper surface of the steel plate 7, and the lower coating roller 43 is in contact with the lower surface of the steel plate 7. The upper and lower corresponding coating rollers 43 are controlled to rotate in opposite directions, that is, the rotation directions of the two liquid transfer rollers 42 are controlled in opposite directions. Under the guidance of the coating chamber 3, the two coating rollers 43 cooperate with each other to achieve uniform roller coating on the surface of the steel plate 7. Among them, the diameter of the coating roller 43 in this embodiment is larger than the diameter of the liquid transfer roller 42, and the central axis plane of the coating roller 43 and the liquid transfer roller 42 in the horizontal direction are located on the same horizontal plane, the lowest point of the upper coating roller 43 is lower than the lowest point of the liquid storage tank 41 located above, and the highest point of the upper coating roller 43 is higher than the highest point of the liquid transfer roller 42 located below, which can ensure the smooth movement of the steel plate 7.

[0038] Reference Figure 1 The liquid inlet end of the liquid outlet unit 5 is connected to the bottom of the coating chamber 3, and the liquid outlet end of the liquid outlet unit 5 is connected to the top side wall of the release agent tank body 11, and the liquid outlet unit 5 is connected to a filter 6. The filter 6 can effectively filter the release agent flowing out of the coating chamber 3 to prevent impurities in the release agent from entering the liquid storage tank 41, thereby ensuring the stability and reliability of the release agent recycling.

[0039] The working process of the release agent coating device in this embodiment is as follows:

[0040] When the steel plate 7 is roller-coated with the release agent, the release agent in the release agent tank body 11 is transported to the liquid storage tank 41 through the liquid inlet unit 1, and then the driving part is started to drive the liquid transfer roller 42 to rotate. During the rotation, the liquid transfer roller 42 evenly brings the release agent in the liquid storage tank 41 to the surface of the liquid transfer roller 42, and the coating roller 43 is in contact with the liquid transfer roller 42. Under the action of friction, the liquid transfer roller 42 drives the coating roller 43 to rotate and evenly transfers the release agent on the circumference of the liquid transfer roller 42 to the coating roller 43. At this time, the steel plate 7 is fed between the two coating rollers 43, and the steel plate 7 moves at a constant speed. The two coating rollers 43 cooperate with each other to achieve uniform coating of the release agent on the upper and lower surfaces of the steel plate 7.

[0041] Example 2

[0042] The release agent coating device disclosed in this embodiment differs from that in embodiment 1 in that:

[0043] Reference Figure 2A scraper assembly 8 is also provided in the coating chamber 3. The scraper assembly 8 includes a first scraper 81 and a second scraper 82. The first scraper 81 is used to scrape the coating roller 43, and the second scraper 82 is used to scrape the liquid transfer roller 42. The first scraper 81 and the second scraper 82 are both connected to a lifting assembly, which can be lifted and installed in the coating chamber 3 through the lifting assembly. The lifting assembly can be a conventional lifting assembly that can drive the first scraper 81 and the second scraper 82 to move in the vertical direction, such as a cylinder. In addition, the liquid storage tank 41 of this embodiment is connected to a discharge pipe 9, which discharges the release agent into the coating chamber 3. The discharge pipe 9 is provided with a discharge valve 91.

[0044] The release agent coating device in this embodiment adds the following working process compared to Example 1:

[0045] The first scraper 81 and the second scraper 82 can be installed in the coating chamber 3 in a lifting manner. When the coating roller 43 is coating the steel plate 7 with release agent, the first scraper 81 can be driven away from the coating roller 43 and the second scraper 82 can be driven away from the liquid transfer roller 42 to ensure stable coating of the coating roller 43. When it is necessary to clean the crystallized release agent remaining on the coating roller 43 and the liquid transfer roller 42, the first scraper 81 is driven to abut against the circumference of the coating roller 43 and the second scraper 82 is driven to abut against the surface of the liquid transfer roller 42, and the liquid transfer roller 42 is started to drive the coating roller 43 to rotate, so that the crystallized release agent on the circumference of the coating roller 43 is removed by the first scraper 81, and the crystallized release agent on the surface of the liquid transfer roller 42 is removed by the second scraper 82. In addition, after the scraped crystallized release agent enters the liquid storage tank 41, if the crystallized release agent is not separated from the release agent in the liquid storage tank 41, it will affect the uniformity of the release agent coating on the surface of the steel plate 7. For this reason, the present application adds a scraper assembly 8 and simultaneously connects a discharge pipe 9 to the liquid storage tank 41. After the surface cleaning of the coating roller 43 and the liquid transfer roller 42 is completed, the release agent in the liquid storage tank 41 is first discharged into the coating chamber 3, and then the release agent in the liquid storage tank 41 is replaced through the liquid inlet unit 1, and then the steel plate 7 is roller-coated with the release agent, which is conducive to achieving uniform coating of the release agent on the surface of the steel plate 7.

[0046] This specific implementation manner is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the specific implementation manner as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A release agent coating device, characterized in that: The coating unit (2) comprises a coating chamber (3) and two groups of coating assemblies (4) arranged correspondingly above and below. The steel plate (7) is located between the two groups of coating assemblies (4). The two groups of coating assemblies (4) cooperate with each other to achieve roller coating on both surfaces of the steel plate (7). Each group of the coating components (4) includes a liquid storage tank (41) provided in the coating chamber (3) for temporarily storing the release agent, a liquid transfer roller (42) rotatably installed in the coating chamber (3) and located above the liquid storage tank (41), and a coating roller (43) rotatably installed in the coating chamber (3) and coating the surface of the steel plate (7) with the release agent, wherein the liquid transfer roller (42) is connected to a driving member for driving the liquid transfer roller (42) to rotate, the liquid transfer roller (42) is in contact with the coating roller (43), and the release agent in the liquid storage tank (41) is brought to the peripheral surface of the coating roller (43).

2. A release agent coating device according to claim 1, characterized in that: The two corresponding coating rollers (43) rotate in opposite directions, and the coating roller (43) located above abuts against the upper surface of the steel plate (7), while the coating roller (43) located below abuts against the lower surface of the steel plate (7).

3. The release agent coating device according to claim 1, characterized in that: The liquid storage tank (41) is provided with an overflow port (411).

4. The release agent coating device according to claim 1, characterized in that: The release agent coating device further comprises a liquid supply unit, the liquid supply unit comprising a release agent tank body (11) and a pumping assembly (12), the liquid inlet end of the pumping assembly (12) being connected to the release agent tank body (11), and the liquid outlet end of the pumping assembly (12) being connected to the liquid storage tank (41).

5. The release agent coating device according to claim 4, characterized in that: The release agent coating device further comprises a liquid outlet unit (5), wherein a liquid inlet end of the liquid outlet unit (5) is connected to the coating chamber (3), and a liquid outlet end of the liquid outlet unit (5) is connected to the release agent tank body (11).

6. The release agent coating device according to claim 5, characterized in that: The liquid outlet unit (5) is connected to a filter (6), and the filter (6) is used to filter the release agent flowing out of the coating chamber (3).

7. A release agent coating device according to any one of claims 1 to 6, characterized in that: A scraper assembly (8) is provided in the coating chamber (3), and the scraper assembly (8) includes a first scraper (81) and a second scraper (82), wherein the first scraper (81) is used to scrape the coating roller (43), and the second scraper (82) is used to scrape the liquid transfer roller (42), wherein both the first scraper (81) and the second scraper (82) can be installed in the coating chamber (3) in a lifting manner.

8. The release agent coating device according to claim 7, characterized in that: The liquid storage tank (41) is connected to a discharge pipe (9), and the discharge pipe (9) discharges the release agent into the coating chamber (3), wherein a discharge valve (91) is provided on the discharge pipe (9).

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