Powder flattening device and powder flattening method on a tile production line

Abstract

The application relates to the technical field of ceramic tile production, and particularly discloses a powder smearing device on a ceramic tile production line and a powder smearing method. The powder smearing device on the ceramic tile production line comprises a rack, a conveying belt, a first smearing plate and a second smearing structure. The conveying belt is installed on the rack and driven by a motor, the first smearing plate and the second smearing structure are sequentially arranged above the conveying belt, after the powder falls, the powder is preliminarily scraped by the first smearing plate, then the powder moves to the second smearing structure under the conveying of the conveying belt, and the second smearing structure smears the powder, so that the powder is more even. After the even powder is pressed, the density of each part of the obtained brick blank is more uniform, and the quality of the ceramic tile is better. The smearing method is used to adjust the smearing device, so that the powder is more evenly smeared, and then the density of each part of the brick blank is more uniform.

Description

Technical Field

[0001] This invention relates to the field of ceramic tile production technology, and in particular to a powder leveling device and a powder leveling method for a ceramic tile production line. Background Technology

[0002] Before pressing, especially for large tiles (e.g., 1m x 1m or larger), the ceramic powder needs to be spread evenly on the mold plate before the tile forming area on the production line. This ensures the powder surface is extremely flat, guaranteeing that the density of each part of the tile is roughly the same after pressing. If the density of different parts of the pressed tile varies significantly, cracking will occur during subsequent processing, rendering the tile unusable. This requirement is particularly stringent in the production of large tiles.

[0003] Traditional leveling structures use a squeegee (scraper) suspended above the powder being leveled. The powder used in tile processing has very small particles, and when using the squeegee to level the powder within the mold (cavity), it can usually be leveled. However, because the squeegee relies on its bottom edge to level the powder, the powder can become congested in front of the squeegee as it moves along the production line, leading to unevenness along the bottom edge due to uneven stress caused by this congestion. Since stone powder has a relatively high density, it typically undergoes slight settling before being leveled. When the squeegee levels undissolved stone powder, uneven accumulation and ridges can easily occur perpendicular to the conveyor belt, resulting in poor surface leveling, especially for large tiles where quality control and yield are difficult.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] This invention discloses a powder leveling device and a powder leveling method for a tile production line. In view of the defects of the prior art, it provides a solution that can scrape the powder more evenly, making it particularly suitable for the processing of larger-sized tiles in the production line.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The powder leveling device on the tile production line includes:

[0008] frame;

[0009] A conveyor belt, mounted on the frame, is driven by a motor and used to convey powder;

[0010] The first smearing plate is located upstream of the conveyor belt in the conveying direction and is used to initially smooth the surface of the powder.

[0011] The second smoothing structure is located downstream of the conveyor belt in the conveying direction. The smoothing structure includes a first support, a first scraper, and a first steel wire. The first support is mounted on the frame, the first scraper is mounted on the first support, and the first steel wire is tensioned on the first support.

[0012] The bottom surface of the first scraper and the first steel wire are both parallel to the upper surface of the conveyor belt. The first steel wire, the first scraper and the first smearing plate are arranged in parallel, and the first steel wire is arranged in front of and below the first scraper.

[0013] The first steel wire is positioned adjacent to the first scraper, and the distance between them ensures that the powder loosened by the first steel wire is smoothed by the first scraper at approximately the same time.

[0014] Preferably, the powder leveling device on the tile production line further includes a loosening structure, which is disposed between the second leveling structure and the first leveling plate, and the loosening structure is used to loosen the surface powder.

[0015] Preferably, the loosening structure includes a second support and a first loosening unit; the first loosening unit includes a second steel wire and a third steel wire; the second support is mounted on the frame; both the second steel wire and the third steel wire are mounted on the second support and are tensioned; the second steel wire and the third steel wire are arranged in parallel and are located downstream of the third steel wire; the height of the second steel wire and the third steel wire is located below the first steel wire.

[0016] Preferably, the third steel wire is disposed above the second steel wire.

[0017] Preferably, the second smoothing structure further includes a first bolt and a driving unit. The first bolt is threadedly connected to the first bracket. Two first bolts are provided and are arranged on both sides of the first bracket along the extension direction of the first bracket. The two ends of the first steel wire are respectively connected to the two first bolts and tensioned between the two first bolts. The driving unit is used to drive the first scraper to move up and down.

[0018] Preferably, the second smoothing structure further includes a second bolt, which is threadedly connected to the first bracket; two second bolts are provided, arranged on both sides of the first bracket along the extension direction of the first bracket, and the two first bolts are both disposed between the two second bolts; the bottom surface of the first bolt is provided with a first groove, and the first steel wire abuts against the first groove; the two ends of the first steel wire respectively pass through the two first grooves and extend towards the two second bolts; the second bolt is disposed above the first groove, and the end of the first steel wire is wound around the second bolt.

[0019] Preferably, the first loosening unit further includes a third bolt and a fourth bolt;

[0020] The third bolt is threaded onto the second bracket; there are two third bolts, arranged on both sides of the second bracket along the extension direction of the second bracket; the two ends of the second steel wire are respectively connected to the two third bolts and tensioned between the two second bolts;

[0021] The fourth bolt is threaded onto the second bracket; there are two fourth bolts, arranged on both sides of the second bracket along the extension direction of the second bracket; the two ends of the third steel wire are respectively connected to the two fourth bolts and tensioned between the two fourth bolts.

[0022] Preferably, the loosening structure further includes a fifth bolt, which is threaded onto the second bracket; two fifth bolts are provided, arranged on both sides of the second bracket along the extension direction of the second bracket;

[0023] The bottom surface of the third bolt is provided with a second groove for the second steel wire to abut against the second groove; both ends of the second steel wire extend through the second groove toward the fifth bolt and are wound around the fifth bolt.

[0024] The bottom surface of the fourth bolt is provided with a third groove for the third steel wire to abut against the third groove; both ends of the third steel wire extend through the third groove toward the fifth bolt and are wound around the fifth bolt.

[0025] Preferably, the loosening structure further includes a first guide rod and a sixth bolt; the first guide rod is mounted on the frame, passes through the second bracket, and is slidably connected to the second bracket; the sixth bolt is rotatably connected to the frame, passes through the second bracket, and is threadedly connected to the second bracket.

[0026] Preferably, the drive unit includes a motor, a lead screw, a second guide rod, and a third bracket; the third bracket is fixedly connected to the first bracket; the first bracket has an elongated through hole, and the first scraper is slidably connected in the elongated through hole; the motor is mounted on the third bracket and drives the first scraper to rise and fall and adjust through the lead screw and the second guide rod.

[0027] Preferably, the lower part of the first scraper is provided with an inclined surface, which extends from the lower part of the scraper to the bottom edge of the scraper.

[0028] Preferably, the outer wall of the first guide rod is provided with graduations.

[0029] Preferably, the first steel wire and the first scraper are spaced 1-2 cm apart.

[0030] This invention also discloses a powder leveling method, which is applied to the powder leveling device on the aforementioned tile production line, and the powder leveling method includes:

[0031] Step S1): Determine the required powder height during the application of the powder based on the thickness of the produced ceramic tile, and adjust the height of the first scraper relative to the upper surface of the conveyor belt using the drive unit.

[0032] Step S2): After determining the height of the bottom edge of the first scraper, adjust the height of the first steel wire by using the first bolt and the second bolt so that the first steel wire is located in front of and below the bottom edge of the scraper;

[0033] Step S3): After determining the height of the first steel wire, adjust the height of the second steel wire using the third and fifth bolts so that the second steel wire is above the first steel wire;

[0034] Step S4): After determining the height of the second steel wire, adjust the height of the third steel wire using the fourth and sixth bolts so that the third steel wire is above the second steel wire;

[0035] Step S5): Start the motor to drive the transmission belt to move and convey the powder.

[0036] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0037] The present invention provides a powder leveling device for a tile production line. The powder leveling device sets a first steel wire located below the first scraper between the first scraper and the first trowel plate. This allows the powder above the first steel wire to be lifted by the first steel wire before reaching the first scraper. The lifted powder is then loosened, resulting in a better leveling effect after the powder is leveled by the first scraper.

[0038] Furthermore, by setting up a loosening structure, the powder loosening effect is improved, resulting in a better smoothing effect of the stone powder. By setting up a second and third steel wire, the powder above the first steel wire is pre-loosened, thus improving the loosening effect of the first steel wire. By placing the third steel wire above the second steel wire, the powder is loosened layer by layer, further enhancing the loosening effect.

[0039] Furthermore, by setting the first bolt and drive unit, the vertical positions of the first steel wire and the first scraper are adjustable, enabling the device to process tiles of different thicknesses. Setting the second bolt and adding a new first groove to the first bolt makes adjustment of the first bolt more convenient. Setting the third and fourth bolts allows for vertical height adjustment of both the second and third steel wires. Setting the fifth bolt further facilitates vertical height adjustment of the second and third steel wires. Setting the first guide rod and the sixth bolt expands the adjustment range of the second and third steel wires, ensuring they remain parallel to the upper surface of the conveyor belt. Setting the fourth steel wire results in more uniform powder dissolution, leading to better smoothing effect by the scraper. Setting the seventh bolt allows for vertical height adjustment of the fourth steel wire. Setting the fifth bolt makes vertical height adjustment of the fourth steel wire more convenient. Setting a motor-driven scraper makes vertical height adjustment of the scraper more convenient. An inclined surface on the scraper prevents powder accumulation. By sequentially placing the fourth steel wire along the conveying direction from high to low, the powder is loosened more evenly, resulting in a smoother surface under the scraper's smoothing action. A distance sensor and controller monitor the scraper's height, allowing for precise adjustment. Graduation on the outer wall of the first guide rod ensures the second support is parallel to the upper surface of the conveyor belt, guaranteeing effective loosening of the steel wires on it. Positioning the first steel wires 1-2 cm away from the scraper ensures the powder is lifted before contacting it, further enhancing the smoothing effect. A 10-20 cm interval between the loosening and smoothing structures allows sufficient time for the loosened powder to fall, achieving initial smoothing. Similarly, a 1-5 cm interval between the second, third, and fourth steel wires ensures sufficient time for the loosened powder to fall, achieving initial smoothing.

[0040] The present invention also discloses a dusting method for a powder dusting device applied to a tile production line, which has all the advantages of a powder dusting device for a tile production line. Attached Figure Description

[0041] Figure 1This is a schematic diagram of the structure of a powder leveling device on a ceramic tile production line according to an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of a smoothing structure provided in an embodiment of the present invention;

[0043] Figure 3 for Figure 2 Exploded view;

[0044] Figure 4 for Figure 2 A magnified structural diagram of a local structure from another perspective;

[0045] Figure 5 This is a schematic diagram of the loosening structure provided in an embodiment of the present invention;

[0046] Figure 6 for Figure 5 Exploded view;

[0047] Figure 7 for Figure 6 Enlarged view of the structure of section A in the middle;

[0048] Figure 8 for Figure 5 A magnified structural diagram of a local structure from another perspective;

[0049] Figure 9 This is a front view of a loosening structure provided in an embodiment of the present invention;

[0050] Figure 10 This is a front view of a loosening structure provided in an embodiment of the present invention;

[0051] Figure 11 for Figure 10 Enlarged view of the structure of section B in the middle;

[0052] Figure 12 This is a schematic cross-sectional view of the connection between the third steel wire and the fifth bolt according to an embodiment of the present invention;

[0053] Figure 13 This is a schematic diagram of the upward movement of the second and third steel wires according to an embodiment of the present invention;

[0054] Figure 14 This is a schematic diagram of the downward movement of the second and third steel wires according to an embodiment of the present invention.

[0055] Key component symbols: 1-Frame, 2-Conveyor belt, 21-Flange, 3-First smoothing plate, 4-Second smoothing structure, 41-First bracket, 411-Through hole, 412-First recess, 42-First scraper, 421-Ceiling surface, 43-First steel wire, 44-First bolt, 441-First groove, 45-Drive unit, 451-Motor, 452-Lead screw, 453-Second guide rod, 454-Third bracket, 455-Distance sensor, 456-Controller, 46-Second bolt

[0056] 5-Loosening structure, 51-Second bracket, 511-Second recess, 52-First loosening unit, 521-Second steel wire, 522-Third steel wire, 523-Third bolt, 5231-Second groove, 524-Fourth bolt, 5241-Third groove, 525-Fifth bolt, 526-Snap ring, 53-First guide rod, 54-Sixth bolt, 551-Fourth steel wire, 552-Seventh bolt. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0059] Furthermore, some of the aforementioned terms, besides indicating direction or positional relationships, may also have other meanings. For example, the term "above" may, in certain circumstances, indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0060] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0061] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0062] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0063] Example

[0064] Please see Figure 1-14 The preferred embodiment of the powder leveling device for a ceramic tile production line provided by the present invention is as follows: Figure 1 The diagram shows only a portion of the entire production line, including a frame 1, a conveyor belt 2, a first smoothing plate 3, and a second smoothing structure 4. The conveyor belt 2 is mounted on the frame 1 and driven by a corresponding motor. The first smoothing plate 3 and the second smoothing structure 4 are sequentially positioned above the conveyor belt 2. When powder material, typically large ceramic tiles, is fed from the initial section and transported, it first passes under the first smoothing plate 3 and is initially smoothed to prevent uneven thickness.

[0065] The powder and template are conveyed by conveyor belt 2 to the second smoothing structure 4. The second smoothing structure 4 further fine-tunes and smooths the powder to ensure that the surface flatness meets the requirements for large-scale tile processing. Specific parameters can be determined based on actual experiments. The height of the first smoothing plate 3 and the second smoothing structure 4 relative to the powder surface can both be set to be adjustable. After the smoothed powder is pressed in subsequent processes, the resulting tile blank has a more uniform density, resulting in better tile quality.

[0066] Specifically, the second smoothing structure 4 is located downstream of the conveyor belt 2 in the conveying direction (relative to the first smoothing plate 3), while the first smoothing plate 3 is located upstream of the conveyor belt 2 in the conveying direction, so that the smoothing action of the first smoothing plate 3 can loosen the powder and allow it to be conveyed to the second smoothing structure 4.

[0067] like Figure 2 and, Figure 3As shown, the second smoothing structure 4 includes a first support 41, a second scraper 42, and a first steel wire 43. The first support 41 is a U-shaped support with an opening at the bottom and is mounted on the frame 1 via two arms, forming a suspended space in the middle. The second scraper 42 is installed within the suspended space of the first support 41, and the first steel wire 43 is tensioned between the two legs of the first support 41. The first steel wire 43 is positioned in front of the second scraper 42, i.e., upstream of the first smoothing plate 3.

[0068] The bottom surfaces of both the first steel wire 43 and the second scraper 42 are parallel to the upper surface of the conveyor belt 2 and slightly lower than the second scraper 42, closer to the powder. Preferably, the first steel wire 43 can scrape into the surface of the powder by several millimeters, for example, 1-2 mm deep, thereby loosening the powder. The first steel wire 43 and the second scraper 42 are arranged parallel to each other on the first support 41, and their spacing is relatively close, adjacent, or adjacent, for example, 1-2 cm or closer. This ensures that the powder passing through the first steel wire 43 falls and is blocked by the second scraper 42 as the production line is transported. The height of the second scraper 42 from the upper surface of the powder is adjusted to ensure that the powder can pass through, that is, in a state of slight gap, so that the powder is loosened by the first steel wire 43 and then pressed by the second scraper 42 without being pressed, thus achieving a more refined smoothing of the powder surface.

[0069] The specific working principle is as follows: when the powder moves to the first steel wire 43 under the conveyor belt 2, the first steel wire 43 moves relative to the powder, carrying the powder and causing it to be initially loosened, with some powder passing over the first steel wire 43. After initial loosening, the powder is then scraped flat by the first scraper 42 (close but not pressing), resulting in a better smoothing effect. This ensures that the density of each part of the pressed tile is approximately the same and meets the stress distribution requirements, thereby ensuring the completion of the processing of large tiles and improving the yield rate of tiles.

[0070] Furthermore, to improve the smoothing effect of the powder, the first steel wire 43 is positioned slightly below the first scraper 42. When the first steel wire 43 is positioned below the first scraper 42, all the powder above the first steel wire 43 (above the bottom edge of the first scraper 42) is loosened. When the first scraper 42 smooths the more thoroughly loosened powder, the smoothing effect is better.

[0071] Furthermore, to achieve a better smoothing effect for the powder, the distance between the first steel wire 43 and the first scraper 42 is set at 1-2 cm. At this distance, the powder loosened by the first steel wire 43 has not yet settled under gravity, resulting in the best loosening effect of the powder. In other words, the scraper 42 can achieve the best fine smoothing effect when smoothing the powder at this distance.

[0072] For example, if the first wire 43 is too close to the first scraper 42, that is, the distance between the first wire 43 and the first scraper 42 is less than 1cm, the powder that is lifted by the first wire 43 has not completely fallen. Since the first wire 43 is located below the first scraper 42, the actual height of the smoothing when the first scraper 42 is smoothing will be lower than the required height.

[0073] If the first steel wire 43 is too far from the first scraper 42, that is, the distance between the first steel wire 43 and the first scraper 42 is greater than 2cm, the powder carried by the first steel wire 43 may have already settled slightly, the loosening effect will be relatively poor, and thus the smoothing effect will be deviated.

[0074] Meanwhile, a flange 21 is also provided on the edge of the conveyor belt 2, such as Figure 1 As shown, this is to prevent residual powder from falling into the frame 1 or other locations. The bottom edge of the first scraper 42 can preferably be a bevel 421 facing the direction in which the powder is fed, generally forming a flush blade at the bottom edge to create a fine powder surface plane.

[0075] To further improve the powder loosening effect, a loosening structure 5 can be provided between the second smoothing structure 4 and the first smoothing plate 3, such as... Figure 1 , Figure 5 and Figure 6 As shown, the loosening structure 5 is used to initially loosen the surface powder so that the subsequent loosening effect of the first steel wire 43 is better, thereby improving the smoothing effect.

[0076] Specifically, the loosening structure 5 includes a second support 51 and a first loosening unit 52. The first loosening unit 52 includes a second steel wire 521 and a third steel wire 522. The second support 51 is mounted on the frame 1, and both the second steel wire 521 and the third steel wire 522 are mounted on the second support 51. Both the second steel wire 521 and the third steel wire 522 are tensioned and arranged parallel to each other at a predetermined distance below the powder surface, for example, a few millimeters. The heights of the second steel wire 521 and the third steel wire 522 can be the same or different, such as lower in the front and higher in the back, or vice versa, depending on the characteristics of the powder. For example, a lower front and higher back arrangement can be used for heavier, easily agglomerated powder. The loosening depth of the second steel wire 521 and the third steel wire 522 is preferably set deeper than the position of the first steel wire 43, so that the second smoothing structure 4 has a better smoothing effect.

[0077] When the powder passes through the second steel wire 521 and the third steel wire 522, the powder is initially loosened by the second steel wire 521 and the third steel wire 522. The powder that has been initially loosened does not completely settle when it reaches the first steel wire 43. Thus, the loosening effect of the first steel wire 43 on the powder is better than the effect of the powder being loosened by the first steel wire 43 alone.

[0078] Preferably, the height difference between the third steel wire 522 and the second steel wire 521 can be set to be the same as the height difference between the second steel wire 521 and the first steel wire 43, so as to achieve a better effect of powder loosening.

[0079] Furthermore, to make the height of the first steel wire 43 and the scraper 42 adjustable, in one embodiment of the present invention, the second smoothing structure 4 further includes a first bolt 44 and a driving unit 45, such as... Figure 2 , Figure 3 and Figure 4 As shown. The first bolt 44 is threadedly connected to the first bracket 41 and is used to adjust the height of the first steel wire 43 in the vertical direction; the drive unit 45 is mounted on the frame 1 or the first bracket 41 and is used to adjust the height of the first scraper 42 in the vertical direction.

[0080] The first bolt 44 is threadedly connected to the first bracket 41, and there are two first bolts 44. The two first bolts 44 are arranged on both sides of the first bracket 41 along the extension direction of the first bracket 41. The two ends of the first wire 43 are respectively connected to the two first bolts 44, and the first wire 43 is tensioned between the two first bolts 44.

[0081] The two ends of the first steel wire 43 can be welded to the first bolt 44 or fixed by other means such as screws. When adjusting the height of the first steel wire 43, the first steel wire 43 can be unassembled with the first bolt 44 first. When the first bolt 44 moves to the specified height, the first steel wire 43 can be assembled and connected with the first bolt 44 to adjust the height of the first steel wire 43.

[0082] Preferably, in another embodiment of the present invention, in order to make the vertical height adjustment of the first steel wire 43 more convenient, the second smoothing structure 4 may also be provided with a second bolt 46, such as... Figure 4As shown. Two second bolts 46 are threadedly connected to the first bracket 41. These two second bolts 46 are arranged on either side of the first bracket 41 along its extension direction. Two first bolts 44 are positioned between the two second bolts 46. A first groove 441 is provided at the bottom of each first bolt 44. A first steel wire 43 abuts against the inner wall of the first groove 441, with both ends of the first steel wire 43 extending through the two first grooves 441 towards the two second bolts 46. The second bolts 46 are positioned above the first grooves 441, with the first steel wire 43 wound around them, and the ends of the first steel wire 43 are fixedly connected to the second bolts 46.

[0083] like Figure 4 As shown, the bottom of the first bracket 41 is provided with a first recess 412, and the part of the second bolt 46 used for winding the first steel wire 43 is provided in the first recess 412.

[0084] For example, assuming the first wire 43 is at its lowest point, the first bolt 44 is also at its lowest point, and the length of the first wire 43 wound on the second bolt 46 is at its shortest. When it is necessary to raise the height of the first wire 43, first rotate the second bolt 46 to release the first wire 43, allowing it to be released from the first groove 441. After the first wire 43 is released from the first groove 441, rotate the first bolt 44 to raise it to the required height, then rotate the second bolt 46 to tighten the first wire 43, thus tensioning the first wire 43 against the inner wall of the first groove 441.

[0085] It is worth noting that, in order to facilitate tensioning or winding of the first steel wire 43, the shank of the second bolt 46 used for winding the first steel wire 43 may not be threaded, so that the winding of the first steel wire 43 is smoother.

[0086] Meanwhile, relying solely on the frictional force of the threaded connection between the second bolt 46 and the first bracket 41, coupled with the tangential tension of the first steel wire 43, could cause the second bolt 46 to loosen. Therefore, a nut is threaded onto the part of the second bolt 46 that extends out of the first bracket 41. The direction in which the nut and bolt are tightened is the same as the direction in which the second bolt 46 releases the first steel wire 43. With the nut installed, under the tangential tension of the first steel wire 43, the second bolt 46 can be well locked by the nut and will not rotate, thus keeping the first steel wire 43 taut at all times.

[0087] Preferably, such as Figures 7-11 As shown, in another embodiment of the present invention, in order to make it easier to adjust the height of the second steel wire 521 and the third steel wire 522 in the vertical direction, the first loosening unit 52 may also be provided with thirteen bolts 523 and a fourth bolt 524.

[0088] Specifically, the third bolt 523 is threaded to the second bracket 51, and there are two third bolts 523. The two third bolts 523 are arranged on both sides of the second bracket 51 along the extension direction of the second bracket 51. The two ends of the second wire 521 are respectively connected to the two third bolts 523, and the second wire 521 is tensioned between the two third bolts 523.

[0089] The two ends of the second steel wire 521 can be welded to the third bolt 523. When adjusting the height of the second steel wire 521, the second steel wire 521 can be disconnected from the third bolt 523 first. When the third bolt 523 moves to the specified height, the second steel wire 521 can be connected to the third bolt 523 to adjust the height of the second steel wire 521.

[0090] Specifically, the fourth bolt 524 is threaded to the second bracket 51, and there are two fourth bolts 524. The two fourth bolts 524 are arranged on both sides of the second bracket 51 along the extension direction of the second bracket 51. The two ends of the third wire 522 are respectively connected to the two fourth bolts 524, and the third wire 522 is tensioned between the two fourth bolts 524.

[0091] The two ends of the third steel wire 522 can be welded to the fourth bolt 524. When adjusting the height of the third steel wire 522, the third steel wire 522 is separated from the fourth bolt 524. When the fourth bolt 524 moves to the specified height, the third steel wire 522 is then connected to the fourth bolt 524 to adjust the height of the third steel wire 522.

[0092] Preferably, in another embodiment of the present invention, in order to facilitate the vertical height adjustment of the second steel wire 521 and / or the third steel wire 522, the loosening structure 5 is further provided with a fifth bolt 525, such as... Figure 7 and Figure 8 As shown.

[0093] The fifth bolt 525 is threadedly connected to the second bracket 51. Two fifth bolts 525 are provided, arranged on either side of the second bracket 51 along its extension direction. Two third bolts 523 and two fourth bolts 524 are positioned between the two fifth bolts 525. A second groove 5231 is provided at the bottom of the third bolt 523, such as... Figure 7As shown, the second steel wire 521 abuts against the inner wall of the second groove 5231, and both ends of the second steel wire 521 extend through the two second grooves 5231 to the two fifth bolts 525. The bottom of the fourth bolt 524 is provided with a third groove 5241, and the third steel wire 522 abuts against the inner wall of the third groove 5241. Both ends of the third steel wire 522 extend through the two third grooves 5241 to the two fifth bolts 525. The second grooves 5231 and 5241 are both located below the fifth bolts 525. The second steel wire 521 is wound around the fifth bolt 525, and the end of the second steel wire 521 is fixedly connected to the fifth bolt 525; the third steel wire 522 is wound around the fifth bolt 525, and the end of the third steel wire 522 is connected to the fifth bolt 525.

[0094] like Figure 8 As shown, the bottom of the second bracket 51 is provided with a second recess 511, and the portion of the fifth bolt 525 used for winding the first steel wire 43 is provided in the second recess 511.

[0095] For example, assuming the second wire 521 is at its lowest point, the third bolt 523 is also at its lowest point, and the length of the second wire 521 wound on the fifth bolt 525 is at its shortest. When it is necessary to raise the height of the second wire 521, first rotate the fifth bolt 525 to release the second wire 521, allowing it to be released from the second groove 5231. After the second wire 521 is disengaged from the first groove 441, rotate the third bolt 523 to raise it to the required height. Then, rotate the fifth bolt 525 to tighten the second wire 521, thus tensioning the second wire 521 within the second groove 5231.

[0096] It is worth noting that, in order to facilitate tensioning or winding of the first steel wire 43, the shank of the fifth bolt 525 used for winding the first steel wire 43 may not be threaded, so that the winding of the first steel wire 43 is smoother.

[0097] Meanwhile, relying solely on the frictional force of the threaded connection between the fifth bolt 525 and the second bracket 51, and the tangential tension of the second steel wire 521, the fifth bolt 525 might loosen. Therefore, a nut is threaded onto the part of the fifth bolt 525 that extends out of the second bracket 51. The direction in which the nut and bolt are tightened is the same as the direction in which the fifth bolt 525 releases the second steel wire 521. With the nut installed, under the tangential tension of the first steel wire 43, the fifth bolt 525 can be well locked by the nut and will not rotate, thus keeping the first steel wire 43 taut at all times.

[0098] In another embodiment, such as Figure 10 , Figure 11 and Figure 12As shown, a winding structure for multiple steel wires can also be provided on the fifth bolt 525. Specifically, when multiple steel wires are placed at different depths below a seventh bolt 552, they can all extend to the same fifth bolt 525, and multiple corresponding screw holes can be provided on the fifth bolt 525. After each steel wire passes through the corresponding screw hole, a corresponding retaining ring 526 is added to the steel wire to fix its position after clamping. Preferably, multiple fifth bolts 525 can be used to respectively tighten and fix the corresponding steel wires. The number and layers of the steel wires are not limited to the aforementioned two-wire example; three or more wires can be used for better powder dispersion.

[0099] like Figure 13 and Figure 14 As shown, when the same fifth bolt 525 is used to control two steel wires, it becomes impossible to ensure that all steel wires are fully tensioned. To solve the problem of interference between the two steel wires when the fifth bolt 525 winds around the second steel wire 521 and the third steel wire 522, preferably, in one embodiment of the present invention, a first through hole is provided on the fifth bolt 525, the third steel wire 522 passes through the first through hole and continues to extend, and a retaining ring 526 is provided at the position where the third steel wire 522 exits the first through hole of the fifth bolt 525. The retaining ring 526 is detachable and is nested in the outer wall of the third steel wire 522, as shown. Figure 12 As shown.

[0100] Specifically, when it is necessary to rotate the fifth bolt 525, first release the locking rings 526 on both sides of the third wire 522 to the third wire 522. At this time, the third wire 522 is a free wire. First, tension the second wire 521 according to the moving distance, and then tension the third wire 522 by pulling the two ends of the third wire 522. Then, fix the locking rings 526 again at the position where the third wire 522 passes through the first through hole of the fifth bolt 525.

[0101] The retaining ring 526 is usually made of metal, similar to the sealing ring on a sausage. When adjustment is needed, the original retaining ring 526 is broken with a tool, and after the third wire 522 is re-tensioned, a new retaining ring 526 is fixed to the outer wall of the third wire 522.

[0102] The loosening structure 5 is generally spaced 10-20cm apart from the second smoothing structure 4. The loosening structure 5 is far from the second smoothing structure 4 and loosens the upper layer of the powder more deeply. This allows the second smoothing structure 4 to process the powder better and achieve the best smoothing effect.

[0103] Preferably, in one embodiment of the present invention, to prevent the third steel wire 522 from affecting the loosening effect of the powder after being lifted, the loosening structure 5 further includes a first guide rod 53 and a sixth bolt 54. The first guide rod 53 is mounted on the frame 1, passes through the second bracket 51 and is slidably connected to the second bracket 51, and the sixth bolt 54 is used for screwing and assembling with the frame 1, and the sixth bolt 54 passes through the second bracket 51 and is threadedly connected to the second bracket 51.

[0104] Specifically, since the first guide rod 53 is slidably connected to the second bracket 51 and the sixth bolt 54 is threadedly connected to the second bracket 51, rotating the sixth bolt 54 can control the second bracket 51 to move up and down, thereby driving the first loosening unit 52 to move up and down.

[0105] Specifically, the second support 51 can be a cantilever beam.

[0106] To ensure the stability of the second support 51, two first guide rods 53 and two sixth bolts 54 are typically provided. The two sixth bolts are positioned diagonally opposite each other on the cantilever beam, and the two first guide rods 53 are positioned diagonally opposite each other on the cantilever beam. When the two sixth bolts 54 are rotated at the same angular velocity, the second support 51 can be raised or lowered, thereby adjusting its height.

[0107] Preferably, in one embodiment of the present invention, in order to make the two ends of the second support 51 perpendicular to the conveying direction flush, a scale is provided on the outer wall of the first guide rod 53. When the second support 51 rises or falls under the rotation of the sixth bolt 54, the operator can clearly know whether the second support 51 is tilted according to the scale indicated at both ends of the second support 51.

[0108] Preferably, in one embodiment of the present invention, in order to further improve the loosening effect of the loosening structure 5 and make the smoothing effect of the first scraper 42 better, the loosening structure 5 also loosens more steel wires, for example, by providing a fourth steel wire 551. Figure 11 As shown, the fourth steel wire 551 is installed on the second bracket 51 and is in a tensioned state. The fourth steel wire 551 is located above the third steel wire 522, used to increase the number of steel wire layers in contact with and loosening the powder. When the fourth steel wire 551 is used in conjunction with the first steel wire 43, and the second steel wire 521 with the third steel wire 522, the powder can be divided into thinner layers, resulting in more thorough and uniform loosening of the powder.

[0109] Similarly, the fourth wire 551 can also be vertically height-adjustable, similar to the third wire 522 and the second wire 521, for example, by providing a seventh bolt 552. The seventh bolt 552 is threaded onto the second bracket 51 and is used to adjust the vertical height of the fourth wire 551.

[0110] Furthermore, the spacing between the second steel wire 521 and the third steel wire 522, the third steel wire 522 and the fourth steel wire 551, and adjacent fourth steel wires 551 should preferably be controlled at 3-5 cm. At this distance, the powder loosened by different steel wires will not interfere with each other; that is, when the powder is loosened by the next steel wire, all the powder loosened by the previous steel wire falls but does not completely settle.

[0111] Specifically, such as Figure 3 As shown, the drive unit 45 includes a motor 451, a lead screw 452, a second guide rod 453, and a third bracket 454. The third bracket 454 is fixedly connected to the first bracket 41, and has an elongated through hole 411. The scraper 42 is slidably connected to the inner wall of the elongated through hole 411. The motor 451 is mounted on the third bracket 454, the lead screw 452 is mounted on the output end of the motor 451 and is threadedly connected to the scraper 42, and the second guide rod 453 is mounted on the third bracket 454 and is slidably connected to the scraper 42. When it is necessary to adjust the height of the scraper 42, the motor 451 drives the lead screw 452 to rotate, and the scraper 42 moves up and down with the rotation of the lead screw 452.

[0112] Preferably, in one embodiment of the present invention, to facilitate precise adjustment of the scraper 42, the drive unit 45 further includes a distance sensor 455 and a controller 456. The motor 451 and the distance sensor 455 are both communicatively connected to the controller 456. The distance sensor 455 is mounted on the third bracket 454 and is positioned directly above the scraper 42, facing the elongated through hole 411 and pointing towards the scraper 42. Since the scraper 42 is slidably connected to the inner wall of the elongated through hole 411, the distance sensor 455 can detect the distance between the top of the scraper 42 and the distance sensor 455 in real time.

[0113] In actual use, when the scraper 42 is at its lowest point, the controller 456 sets the distance between the distance sensor 455 and the scraper 42 as the initial distance. When the scraper 42 needs to be moved, the controller 456 analyzes the difference between the current distance and the initial distance of the scraper 42 in real time. When the difference matches the specified distance to be moved, the controller 456 controls the motor 451 to stop working, and the scraper 42 can move precisely to the specified position.

[0114] Specifically, the distance sensor 455 can be one of a magnetic displacement sensor, a slip resistor displacement sensor, a laser displacement sensor, an ultrasonic ranging sensor, or a visual displacement sensor.

[0115] Meanwhile, to improve the smoothing effect of the first scraper 42, a slope 421 is provided at the bottom of the first scraper 42. The slope 421 extends from the bottom of the first scraper 42 to its bottom surface, and the angle between the slope 421 and the conveying direction of the conveyor belt 2 is obtuse. After setting the slope 421, the contact area between the first scraper 42 and the powder is smaller, making it less likely for the powder to become uneven when the first scraper 42 smooths the powder. At the same time, the obtuse angle between the slope 421 and the conveying direction of the conveyor belt 2 means that the powder that is thrown up falls down upon impacting the slope 421 and is smoothed by the bottom surface of the first scraper 42, preventing powder accumulation and resulting in a better smoothing effect.

[0116] This invention also discloses a powder leveling method, which is applied to a powder leveling device on a tile production line. The powder leveling method includes:

[0117] Step S1): Determine the required powder height during the application of the powder based on the thickness of the produced ceramic tile, and adjust the height of the first scraper relative to the upper surface of the conveyor belt using the drive unit.

[0118] Step S2): After determining the height of the bottom surface of the first scraper, adjust the height of the first steel wire by using the first bolt and the second bolt so that the first steel wire is located in front of and below the bottom surface of the first scraper.

[0119] Step S3): After determining the height of the first steel wire, adjust the height of the second steel wire using the third and fifth bolts so that the second steel wire is below the first steel wire;

[0120] Step S4): After determining the height of the second steel wire, adjust the height of the third steel wire using the fourth and fifth bolts so that the third steel wire is below the second steel wire;

[0121] Step S5): Start the motor to drive the transmission belt to move and convey the powder.

[0122] After being conveyed by the conveyor belt, the powder is loosened by the third, second and first steel wires in sequence. Then, it is smoothed by the blocking action of the first scraper. The first scraper has a better smoothing effect on the powder, and the powder has a better flatness after being smoothed, without being uneven.

[0123] Furthermore, more sets of steel wires can be added to the second support to improve the smoothing effect of the powder. The method for adjusting the multiple sets of fourth steel wires is the same as that for adjusting the third steel wire; both require first releasing the locking rings on the steel wires.

[0124] In a preferred embodiment of the present invention, the first loosening unit (including the second and third steel wires) and / or one or more fourth steel wires work in conjunction with the smoothing structure to achieve a better smoothing effect on the powder compared to using only the smoothing structure. Furthermore, since the same type of tile is produced in batches, fewer adjustments are required, making adjustments simpler. This also allows the powder smoothing device on the tile production line to be suitable for producing different types of tiles, especially for the processing and manufacturing of large tiles.

[0125] It is understood that those skilled in the art can make equivalent substitutions or changes to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A powder leveling device for a tile production line, characterized in that, include: frame; A conveyor belt, mounted on the frame, is driven by a motor and used to convey powder; The first smearing plate is located upstream of the conveyor belt in the conveying direction and is used to initially smooth the surface of the powder. The second smoothing structure is located downstream of the conveyor belt in the conveying direction. The smoothing structure includes a first support, a first scraper, and a first steel wire. The first support is mounted on the frame, the first scraper is mounted on the first support, and the first steel wire is tensioned on the first support. The bottom surface of the first scraper and the first steel wire are both parallel to the upper surface of the conveyor belt. The first steel wire, the first scraper and the first smearing plate are arranged in parallel, and the first steel wire is arranged in front of and below the first scraper. The first steel wire is arranged adjacent to the first scraper, and the spacing between them ensures that the powder loosened by the first steel wire is basically smoothed by the first scraper at the same time. It also includes a loosening structure, which is disposed between the second smoothing structure and the first smoothing plate. The loosening structure is used to loosen the surface powder. The loosening structure includes a second support and a first loosening unit. The first loosening unit includes a second steel wire and a third steel wire. The second support is mounted on the frame. Both the second and third steel wires are mounted on the second support and are tensioned. The second and third steel wires are arranged in parallel and are located downstream of the third steel wire. The height of the second and third steel wires is below that of the first steel wire.

2. The powder leveling device for a ceramic tile production line according to claim 1, characterized in that, The third steel wire is positioned above the second steel wire.

3. The powder leveling device for a ceramic tile production line according to claim 2, characterized in that, The second smoothing structure also includes a first bolt and a driving unit. The first bolt is threadedly connected to the first bracket. There are two first bolts, which are arranged on both sides of the first bracket along the extension direction of the first bracket. The two ends of the first steel wire are respectively connected to the two first bolts and tensioned between the two first bolts. The driving unit is used to drive the first scraper to move up and down.

4. The powder leveling device for a ceramic tile production line according to claim 3, characterized in that, The second smoothing structure also includes a second bolt, which is threadedly connected to the first bracket; there are two second bolts, which are arranged on both sides of the first bracket along the extension direction of the first bracket, and the two first bolts are arranged between the two second bolts; the bottom surface of the first bolt is provided with a first groove, and the first steel wire abuts against the first groove; the two ends of the first steel wire extend through the two first grooves to the two second bolts respectively; the second bolt is arranged above the first groove, and the end of the first steel wire is wound around the second bolt.

5. The powder leveling device for a ceramic tile production line according to claim 4, characterized in that, The first loosening unit also includes a third bolt and a fourth bolt; The third bolt is threaded onto the second bracket; there are two third bolts, arranged on both sides of the second bracket along the extension direction of the second bracket; the two ends of the second steel wire are respectively connected to the two third bolts and tensioned between the two second bolts; The fourth bolt is threaded onto the second bracket; there are two fourth bolts, arranged on both sides of the second bracket along the extension direction of the second bracket; the two ends of the third steel wire are respectively connected to the two fourth bolts and tensioned between the two fourth bolts.

6. The powder leveling device for a ceramic tile production line according to claim 5, characterized in that, The loosening structure also includes a fifth bolt, which is threaded onto the second bracket; there are two fifth bolts, which are arranged on both sides of the second bracket along the extension direction of the second bracket; The bottom surface of the third bolt is provided with a second groove for the second steel wire to abut against the second groove; both ends of the second steel wire extend through the second groove toward the fifth bolt and are wound around the fifth bolt. The bottom surface of the fourth bolt is provided with a third groove for the third steel wire to abut against the third groove; both ends of the third steel wire extend through the third groove toward the fifth bolt and are wound around the fifth bolt.

7. The powder leveling device for a ceramic tile production line according to claim 6, characterized in that, The loosening structure further includes a first guide rod and a sixth bolt; the first guide rod is mounted on the frame, passes through the second bracket, and is slidably connected to the second bracket; the sixth bolt is rotatably connected to the frame, passes through the second bracket, and is threadedly connected to the second bracket.

8. The powder leveling device for a ceramic tile production line according to claim 7, characterized in that, The drive unit includes a motor, a lead screw, a second guide rod, and a third bracket; the third bracket is fixedly connected to the first bracket; the first bracket has an elongated through hole, and the first scraper is slidably connected to the elongated through hole; the motor is mounted on the third bracket and drives the first scraper to rise and fall and adjust through the lead screw and the second guide rod.

9. The powder leveling device for a ceramic tile production line according to claim 8, characterized in that, The first scraper has an inclined surface at its lower part, which extends from the lower part of the scraper to the bottom edge of the scraper.

10. The powder leveling device for a ceramic tile production line according to claim 9, characterized in that, The outer wall of the first guide rod is provided with graduations.

11. The powder leveling device for a ceramic tile production line according to claim 10, characterized in that, The first steel wire and the first scraper are spaced 1-2 cm apart.

12. A method for leveling powder, characterized in that, The powder leveling method is applied to a powder leveling device on a tile production line as described in any one of claims 7-11, and the powder leveling method includes: Step S1): Determine the required powder height during the application of the powder based on the thickness of the produced ceramic tile, and adjust the height of the first scraper relative to the upper surface of the conveyor belt using the drive unit. Step S2): After determining the height of the bottom edge of the first scraper, adjust the height of the first steel wire by using the first bolt and the second bolt so that the first steel wire is located in front of and below the bottom edge of the scraper; Step S3): After determining the height of the first steel wire, adjust the height of the second steel wire using the third and fifth bolts so that the second steel wire is above the first steel wire; Step S4): After determining the height of the second steel wire, adjust the height of the third steel wire using the fourth and sixth bolts so that the third steel wire is above the second steel wire; Step S5): Start the motor to drive the transmission belt to move and convey the powder.

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