Coating device based on white board

Abstract

The utility model discloses a coating device based on white board paper, and belongs to the technical field of white board paper coating, the technical scheme is that the coating device comprises a spraying device, a conveying roller and a scraping roller, and the scraping roller comprises a mounting frame used for mounting the scraping roller; the mounting arm is movably connected between the mounting frame and the scraping rollers, and the mounting arm independently corresponds to the two scraping rollers; the rotating seat is movably mounted on the mounting frame and is coaxial with the mounting arm; the pressure device is mounted on the mounting frame and acts on the corresponding mounting arm; wherein the rotating seat is provided with an abutting part, the abutting part is arranged between the two mounting arms, the abutting part can only abut against one mounting arm at most, and the rotating seat is controlled to rotate through a first driving device mounted on the mounting frame. According to the device, stable scraping of the scraping roller during use switching can be guaranteed, and the quality stability of white boards is guaranteed.

Description

Technical Field

[0001] This application belongs to the field of whiteboard paper coating technology, and particularly relates to a coating apparatus based on whiteboard paper. Background Technology

[0002] Whiteboard paper has a relatively uniform fiber structure, and the surface layer contains fillers and adhesives. It is also coated with a certain amount of paint. In the coating process of whiteboard paper, the most common processes are roller coating and spray coating. Because spray coating is more uniform and saves more paint than roller coating, it is gradually being phased out.

[0003] Chinese patent CN113152148B discloses a high-efficiency coating device for producing coated whiteboard paper, including a conveyor line with a paint spraying device. Two toothed pulleys are located above the conveyor line and connected by a toothed drive belt. One of the toothed pulleys is connected to a power device. The toothed drive belt meshes with a gear with the same diameter as the toothed pulley. The gear and the toothed pulley away from the gear are connected to a scraper roller via a connecting rod. The scraper roller has a hollow structure with an opening at the top. Each scraper roller has a scraper bar on one side, and each scraper bar has a groove to catch residual material. The scraper bars are connected to the corresponding scraper rollers via rotating parts.

[0004] Although the above-mentioned coating device can smooth the coating on the whiteboard paper through the scraper roller, when switching the scraper roller through gears and toothed pulleys, there are areas of uncoated or uncoated areas on the whiteboard paper placed between the two first conveying rollers when switching from the latter scraper roller to the former scraper roller. This needs to be improved. Utility Model Content

[0005] The purpose of this application is to address the aforementioned technical problems by providing a coating device based on whiteboard paper, which can ensure stable scraping of the coating roller during use and switching, thereby ensuring the quality stability of the whiteboard paper.

[0006] This application provides a coating apparatus based on whiteboard paper, including a spraying device, a conveying roller, and a scraper roller, wherein the scraper roller includes:

[0007] Mounting bracket for mounting scraper rollers;

[0008] The mounting arm is movably connected between the mounting frame and the scraper roller, and the mounting arm corresponds individually to each of the two scraper rollers;

[0009] The rotating base is movably mounted on the mounting bracket and is coaxial with the mounting arm.

[0010] A pressure device, mounted on a mounting bracket and acting on the corresponding mounting arm;

[0011] The rotating seat is provided with an abutment part, which is located between two mounting arms. The abutment part can only abut against one mounting arm at most. The rotating seat is controlled to rotate by a first driving device mounted on the mounting frame.

[0012] By hingedly mounting the scraper roller to the mounting arm, and the mounting arm to the mounting frame, and the rotating seat to the mounting frame, when the two scraper rollers need to be switched, the rotating seat is rotated, causing the contact part to rotate around the rotating seat. By switching the contact part to the mounting arm it abuts, the two scraper rollers are switched. During the switching process, there is a section of the contact part that does not abut against either mounting arm. At this time, both scraper rollers scrape material, which can achieve continuous scraping of the whiteboard paper between the two scraper rollers when the scraper rollers are switched, thereby ensuring the uniformity of the coating on the whiteboard paper. The first driving device adopts a cylinder or motor, etc. The rotating seat is driven to rotate by the first driving device. The pressure device makes the scraper roller apply a certain force to the whiteboard paper, which can make the coating more evenly distributed on the whiteboard paper and can also stick excess coating to the scraper roller to remove excess coating from the whiteboard paper.

[0013] Furthermore, the pressure device includes:

[0014] Pressure column, movably connected to the pressure device;

[0015] The damper is installed and connected to the pressure column;

[0016] The first spring abuts against the pressure column;

[0017] The contraction mechanism is installed between the pressure column and the pressure device;

[0018] The abutment portion is equipped with pressure sensors corresponding to the two mounting arms, and the pressure sensors correspond to the retraction mechanism.

[0019] When the pressure sensor on the contact part does not detect pressure, the pressure column is released by the shrinking mechanism. Under the action of the first spring, the pressure column slowly moves towards the mounting arm and finally abuts against the mounting arm, applying pressure to the mounting arm. When the pressure sensor on the contact part detects pressure, the shrinking mechanism controls the pressure column to shrink. The damper increases the slow change of pressure of the pressure column on the mounting arm, ensuring the quality stability of the whiteboard paper.

[0020] Furthermore, the retraction mechanism includes:

[0021] An electromagnetic coil is mounted on a pressure device;

[0022] The iron core is installed on the pressure column;

[0023] The electromagnetic coil and the iron core are mutually compatible.

[0024] The shrinking mechanism generates electromagnetic force through the energization of the electromagnetic coil, which acts on the iron core to produce mutual attraction, thereby realizing the shrinking of the pressure column and achieving convenient control. The shrinking of the pressure column facilitates the rotation of the corresponding mounting arm away from the whiteboard paper.

[0025] Furthermore, the scraper roller also includes:

[0026] The cam is movably mounted on the mounting arm.

[0027] The connecting rod connects the cam and the scraper roller;

[0028] The second drive unit is used to drive the cam to rotate.

[0029] The second drive device uses a motor. The cam is driven to rotate by the second drive device. The cam, connecting rod, scraper roller and mounting arm form a four-bar linkage mechanism. When the abutting part does not abut against the two mounting arms, the abutting part pushes the scraper roller corresponding to one of the mounting arms away from the whiteboard paper. The scraper roller is slowly rotated by the second drive device, cam and connecting rod, so that there are no obvious separation marks when the scraper roller separates from the whiteboard paper, thus improving the production quality of whiteboard paper.

[0030] Furthermore, the scraper roller also includes:

[0031] The hanging condition allows for movable installation on the scraper roller;

[0032] The third drive unit is installed on one side of the scraper roller and connected to the hanging condition;

[0033] The scraper roller is provided with an opening.

[0034] The third drive device uses a motor, etc., to control the rotation of the hanging bar, which scrapes the coating on the surface of the scraper roller into the hanging condition. When the hanging condition rotates to the top, the coating falls from the hanging condition into the opening of the scraper roller. After completion, the hanging condition is controlled to rotate back.

[0035] Furthermore, the scraper roller also includes:

[0036] The cover is movably mounted on the scraper roller;

[0037] The fourth drive unit is installed on the other side of the scraper roller and connected to the cover.

[0038] The fourth drive device uses a motor. The third and fourth drive devices are respectively located on both sides of the scraper roller. The opening and closing of the opening are achieved by controlling the rotation of the cover through the fourth drive device.

[0039] The beneficial effects of this application are:

[0040] 1. When the two scraper rollers need to be switched, the first drive device drives the rotating seat to rotate. By rotating the rotating seat, the abutting part rotates around the rotating seat. By switching the abutting part to the mounting arm it abuts, the two scraper rollers can be switched.

[0041] 2. During the switching process of the scraper rollers, there is a section in the contact part that does not contact either of the two mounting arms. At this time, both scraper rollers scrape the material, which can achieve continuous scraping of the whiteboard paper between the two scraper rollers when the scraper rollers are switched, thereby ensuring the uniformity of the coating on the whiteboard paper.

[0042] 3. By using a pressure device to apply a certain force to the scraper roller on the whiteboard paper, the coating can be distributed more evenly on the whiteboard paper, and excess coating can be adhered to the scraper roller to remove excess coating from the whiteboard paper. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the coating apparatus of this application. Figure 1 ;

[0044] Figure 2 This is a schematic diagram of the coating apparatus of this application. Figure 2 ;

[0045] Figure 3 This is a schematic diagram of the pressure device of this application;

[0046] Figure 4 This is a schematic diagram of the scraper roller of this application;

[0047] In the attached figures, the following labels are used: 100, spraying device; 200, conveying roller; 300, scraper roller; 301, opening; 310, hanging condition; 320, third drive device; 330, cover; 340, fourth drive device; 400, mounting bracket; 410, mounting arm; 420, rotating seat; 421, abutment part; 422, pressure sensor; 423, first drive device; 500, pressure device; 510, pressure column; 520, damper; 530, first spring; 540, retraction mechanism; 541, electromagnetic coil; 542, iron core; 610, cam; 620, connecting rod; 630, second drive device. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0049] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0050] The embodiments of this application are described in detail below with reference to the accompanying drawings, through specific examples and application scenarios.

[0051] Example 1:

[0052] like Figure 1 , Figure 2 As shown in the figure, this application provides a coating apparatus based on whiteboard paper, including a spraying device 100, a conveying roller 200, and a scraper roller 300, wherein the scraper roller 300 includes:

[0053] Mounting bracket 400 is used to mount scraper roller 300;

[0054] Mounting arm 410 is movably connected between mounting frame 400 and scraper roller 300, and mounting arm 410 corresponds individually to two scraper rollers 300;

[0055] The rotating seat 420 is movably mounted on the mounting bracket 400 and is coaxial with the mounting arm 410;

[0056] The pressure device 500 is mounted on the mounting bracket 400 and acts on the corresponding mounting arm 410;

[0057] The rotating seat 420 is provided with an abutment part 421, which is located between two mounting arms 410. The abutment part 421 can only abut against one mounting arm 410 at most. The rotating seat 420 is controlled to rotate by a first driving device 423 mounted on the mounting frame 400.

[0058] By hingedly mounting the scraper roller 300 onto the mounting arm 410, and hingedly mounting the mounting arm 410 onto the mounting frame 400, and hingedly mounting the rotating seat 420 onto the mounting frame 400, when the two scraper rollers 300 need to be switched, the rotating seat 420 is rotated, causing the abutment part 421 to rotate around the rotating seat 420. By switching the abutment part 421 to the mounting arm 410 it abuts against, the two scraper rollers 300 are switched. During the switching process, there is a section of the abutment part 421 that does not abut against either mounting arm 410. At this time, the two scraper rollers... Both rollers 300 perform scraping, enabling continuous scraping of the whiteboard paper between the two scraping rollers 300 when switching, thereby ensuring the uniformity of the coating on the whiteboard paper. The first driving device 423 adopts a cylinder or motor, etc. The rotating seat 420 is driven to rotate by the first driving device 423. The pressure device 500 causes the scraping rollers 300 to apply a certain force to the whiteboard paper, which can make the coating more evenly distributed on the whiteboard paper and can also stick excess coating to the scraping rollers 300 to remove excess coating from the whiteboard paper.

[0059] Example 2:

[0060] like Figure 2 , Figure 3 As shown, this application embodiment provides a coating apparatus based on whiteboard paper. In addition to the above-mentioned technical features, the pressure device 500 further includes:

[0061] Pressure column 510 is movably connected to pressure device 500;

[0062] The damper 520 is installed and connected to the pressure column 510;

[0063] The first spring 530 abuts against the pressure column 510;

[0064] The contraction mechanism 540 is installed between the pressure column 510 and the pressure device 500;

[0065] The abutment portion 421 is provided with pressure sensors 422 corresponding to the two mounting arms 410, and the pressure sensors 422 correspond to the retraction mechanism 540.

[0066] When the pressure sensor 422 on the contact part 421 does not detect pressure, the pressure column 510 is released by the shrinking mechanism 540. Under the action of the first spring 530, the pressure column 510 slowly moves towards the mounting arm 410 and finally abuts against the mounting arm 410, applying pressure to the mounting arm 410. When the pressure sensor 422 on the contact part 421 detects pressure, the shrinking mechanism 540 controls the pressure column 510 to shrink. The damper 520 increases the slow change of pressure of the pressure column 510 on the mounting arm 410, ensuring the quality stability of the whiteboard paper.

[0067] Furthermore, the retraction mechanism 540 includes:

[0068] Electromagnetic coil 541 is mounted on pressure device 500;

[0069] Iron core 542 is installed on pressure column 510;

[0070] The electromagnetic coil 541 and the iron core 542 are mutually compatible.

[0071] The shrinking mechanism 540 generates electromagnetic force through the energization of the electromagnetic coil 541, which acts on the iron core 542 to produce mutual attraction, thereby realizing the shrinking of the pressure column 510 and achieving convenient control. The shrinking of the pressure column 510 facilitates the rotation of the corresponding mounting arm 410 away from the whiteboard paper.

[0072] Example 3:

[0073] like Figure 2 As shown, this application embodiment provides a coating apparatus based on whiteboard paper. In addition to the above-mentioned technical features, the doctor roller 300 further includes:

[0074] Cam 610 is movably mounted on mounting arm 410;

[0075] Linkage 620 connects cam 610 and scraper roller 300;

[0076] The second drive unit 630 is used to drive the cam 610 to rotate.

[0077] The second drive device 630 uses a motor, and the cam 610 is driven to rotate by the second drive device 630. The cam 610, the connecting rod 620, the scraper roller 300, and the mounting arm 410 form a four-bar linkage. When the abutting part 421 does not abut against the two mounting arms 410, the abutting part 421 pushes the scraper roller 300 corresponding to one of the mounting arms 410 away from the whiteboard paper. The scraper roller 300 is slowly rotated by the second drive device 630, the cam 610, and the connecting rod 620, so that there are no obvious separation marks when the scraper roller 300 separates from the whiteboard paper, thereby improving the production quality of the whiteboard paper.

[0078] Example 4:

[0079] like Figure 1 , Figure 2 , Figure 4 As shown, this application embodiment provides a coating apparatus based on whiteboard paper. In addition to the above-mentioned technical features, the doctor roller 300 further includes:

[0080] Hanging condition 310, movably mounted on scraper roller 300;

[0081] The third drive device 320 is installed on one side of the scraper roller 300 and connected to the hanging condition 310;

[0082] The scraper roller 300 is provided with an opening 301.

[0083] The third drive device 320 uses a motor, etc. The third drive device 320 controls the rotation of the hanging bar to scrape the coating on the surface of the scraper roller 300 into the hanging condition 310. When the hanging condition 310 rotates to the top, the coating falls from the hanging condition 310 into the opening 301 of the scraper roller 300. After completion, the hanging condition 310 is controlled to rotate back.

[0084] Furthermore, the scraper roller 300 also includes:

[0085] The cover 330 is movably mounted on the scraper roller 300;

[0086] The fourth drive unit 340 is installed on the other side of the scraper roller 300 and connected to the cover 330.

[0087] The fourth drive device 340 uses a motor. The third drive device 320 and the fourth drive device 340 are respectively placed on both sides of the scraper roller 300. The opening and closing of the opening 301 is achieved by controlling the rotation of the cover 330 through the fourth drive device 340.

[0088] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0089] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A coating apparatus based on whiteboard paper, comprising a spraying device (100), a conveying roller (200), and a doctor roller (300), characterized in that, The scraper roller (300) includes: Mounting bracket (400) for mounting scraper roller (300); Mounting arm (410) is movably connected between mounting frame (400) and scraper roller (300), wherein the mounting arm (410) corresponds individually to the two scraper rollers (300); A rotating seat (420) is movably mounted on a mounting bracket (400) and coaxial with a mounting arm (410); A pressure device (500) is mounted on a mounting bracket (400) and acts on the corresponding mounting arm (410); The rotating seat (420) is provided with an abutment part (421), which is located between two mounting arms (410). The abutment part (421) can only abut against one mounting arm (410) at most. The rotating seat (420) is controlled to rotate by a first driving device (423) mounted on the mounting frame (400).

2. The coating apparatus based on whiteboard paper according to claim 1, characterized in that, The pressure device (500) includes: The pressure column (510) is movably connected to the pressure device (500); The damper (520) is mounted and connected to the pressure column (510); The first spring (530) abuts against the pressure column (510); A contraction mechanism (540) is installed between the pressure column (510) and the pressure device (500); The abutment part (421) is provided with a pressure sensor (422) corresponding to the two mounting arms (410), and the pressure sensor (422) corresponds to the retraction mechanism (540).

3. The coating apparatus based on whiteboard paper according to claim 2, characterized in that, The retraction mechanism (540) includes: An electromagnetic coil (541) is mounted on a pressure device (500); The iron core (542) is mounted on the pressure column (510); The electromagnetic coil (541) and the iron core (542) are matched and adapted to each other.

4. The coating apparatus based on whiteboard paper according to claim 3, characterized in that, The scraper roller (300) also includes: Cam (610) is movably mounted on mounting arm (410); Linkage (620) is connected between cam (610) and scraper roller (300); The second drive unit (630) is used to drive the cam (610) to rotate.

5. The coating apparatus based on whiteboard paper according to claim 4, characterized in that, The scraper roller (300) also includes: Hanging condition (310), movably mounted on scraper roller (300); The third drive unit (320) is installed on one side of the scraper roller (300) and connected to the hanging condition (310); The scraper roller (300) is provided with an opening (301).

6. The coating apparatus based on whiteboard paper according to claim 5, characterized in that, The scraper roller (300) also includes: The cover (330) is movably mounted on the scraper roller (300); The fourth drive unit (340) is installed on the other side of the scraper roller (300) and connected to the cover (330).

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