Roller needle cleaning device and steel belt hot press

Abstract

The utility model provides a roller needle cleaning device and a steel belt hot press, the roller needle cleaning device is installed on the steel belt hot press and used for cleaning roller needles of a hot press roller of the steel belt hot press, and the roller needle cleaning device comprises an installation frame installed on the steel belt hot press; the cleaning unit is telescopically mounted on the mounting frame and is in contact with the surface of the roller needle; and the first driving assembly is suitable for driving the cleaning unit to move back and forth in the axial direction of the roller needle so as to scrape impurities attached to the roller needle, accumulation of the impurities can be avoided, normal operation of the hot press is guaranteed, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial board processing, and more specifically to a roller needle cleaning device and a steel belt hot press. Background Art

[0002] Particleboard is a board made by cutting logs into wood chips and then going through a series of processes such as drying, gluing, paving, hot pressing and cutting. This type of particleboard is widely used in construction, decoration, home furnishing, packaging and other fields.

[0003] In the process of hot pressing the slab by the commonly used double steel belt hot press, a large amount of gas will be discharged, and some dust will be taken out. The faster the speed of the steel belt hot press, the more dust will be discharged. At the same time, in order to reduce the friction between the steel belt and the hot pressing roller and extend the service life of the equipment, lubrication is required between the steel belt and the hot pressing roller. At the same time, the heat of the hot pressing plate needs to be transferred to the steel belt through the hot pressing roller and the oil film of the lubricating oil. During the operation of the steel belt hot press, the lubricating oil will also evaporate with high temperature. These dust and evaporated lubricating oil will adhere to the roller needle and carbonize at high temperature. Over time, the relative movement between the roller needle and the roller rod will be inflexible. In severe cases, the roller needle will cause an alarm to shut down, and even cause a fire. Utility Model Content

[0004] In view of this, an embodiment of the utility model provides a roller needle cleaning device and a hot press system, through which impurities attached to the roller needle can be cleaned.

[0005] One aspect of the embodiment of the utility model provides a roller needle cleaning device, which is installed on a steel strip hot press and is used to clean the roller needle of the hot pressing roller of the steel strip hot press. The roller needle cleaning device includes a mounting frame, a cleaning unit and a first driving assembly. The mounting frame is installed on the steel strip hot press, and the cleaning unit is telescopically installed on the mounting frame and contacts the surface of the roller needle. The first driving assembly is suitable for driving the cleaning unit to reciprocate in the axial direction of the roller needle to scrape off impurities attached to the roller needle.

[0006] According to an embodiment of the utility model, the first driving assembly includes an air source and a cylinder. The air source is suitable for providing compressed air, the cylinder is installed on the mounting frame, and the output end of the cylinder is connected to the cleaning unit, so that under the action of the compressed air, the cleaning unit follows the output end to reciprocate within the length range of the roller needle.

[0007] According to an embodiment of the utility model, the longitudinal length of the side surface of the cleaning unit in contact with the roller needle in a direction perpendicular to the axial direction is greater than the spacing between two adjacent roller needles, so as to clean multiple roller needles simultaneously under the drive of the first driving assembly.

[0008] According to an embodiment of the utility model, the side surface of the cleaning unit in contact with the roller needle is parallel to the plane where the axes of the plurality of contacting roller needles are located, so as to avoid hindering the movement of the roller needle.

[0009] According to an embodiment of the utility model, the shape of the cleaning unit is rectangular, trapezoidal, semicircular or triangular.

[0010] According to an embodiment of the utility model, the roller needle cleaning device further comprises a support frame, two roller brushes and a second drive assembly. The two roller brushes are mounted on the support frame and are located on both sides of the roller needles arranged in a row. The second drive assembly is mounted on the support frame and is suitable for driving the two roller brushes to rotate in opposite directions to clean the roller needles located between the two roller brushes.

[0011] According to an embodiment of the utility model, the second driving assembly includes a driving motor, a driving gear and a driven gear. The driving gear is connected to the first roller brush of the two roller brushes and is suitable for driving the first roller brush to rotate under the drive of the driving motor. The driven gear is connected to the second roller brush of the two roller brushes and meshes with the driving gear, so that the second roller brush rotates in the opposite direction to the first roller brush.

[0012] As another aspect of the embodiment of the utility model, a steel strip hot press is provided, comprising two conveying mechanisms arranged vertically, two hot pressing mechanisms and any one of the roller needle cleaning devices described above. Two conveying mechanisms arranged vertically, each hot pressing mechanism comprises: a driving wheel, a driven wheel and a steel belt wound around the driving wheel and the driven wheel, and the two steel belts cooperate to drive the slab to move linearly. Two hot pressing mechanisms are respectively sleeved in the two conveying mechanisms, and the multiple parallel hot pressing rollers of the two hot pressing mechanisms circulate in the two steel belts through roller needles to transfer heat and pressure to the steel belts, thereby hot pressing the slab between the steel belts.

[0013] According to an embodiment of the utility model, the roller needle cleaning device is installed near the steel belt located at the upper part, and is suitable for cleaning the roller needles of the hot pressing rollers surrounding the steel belt located at the upper part.

[0014] According to an embodiment of the utility model, there are multiple roller needle cleaning devices, which are respectively arranged corresponding to the roller needles at both ends of the hot pressing roller.

[0015] According to the roller needle cleaning device of the embodiment of the utility model, by setting up a cleaning unit, the driving assembly is used to drive the cleaning unit to move back and forth in the axial direction of the roller needle, so as to scrape off impurities attached to the roller needle, avoid the accumulation of impurities, ensure the normal operation of the hot press, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other purposes, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0017] Figure 1 The working principle diagram of the hydraulic press of the embodiment of the utility model is schematically shown;

[0018] Figure 2 A partial cross-sectional view of a steel strip hot press according to an embodiment of the utility model from a first viewing angle is schematically shown;

[0019] Figure 3 A partial stereoscopic view of a steel strip hot press machine from a second viewing angle is schematically shown in an embodiment of the utility model;

[0020] Figure 4 A partial cross-sectional view schematically showing a third viewing angle of a steel strip hot press according to an embodiment of the utility model; and

[0021] Figure 5 Schematically shows Figure 4 A partial enlarged view of part A of the roller needle cleaning device is shown.

[0022] [Description of Reference Numerals]

[0023] 1-Steel belt hot press;

[0024] 11-transmission mechanism;

[0025] 111- driving wheel;

[0026] 112-driven wheel;

[0027] 113-Steel belt;

[0028] 12- hot pressing mechanism;

[0029] 121- hot pressing roller;

[0030] 1211-roller bar;

[0031] 1212- roller needle;

[0032] 14-pressure providing unit;

[0033] 15- hot pressing plate;

[0034] 2-Roller needle cleaning device;

[0035] 21-mounting frame;

[0036] 22- cleaning unit;

[0037] 23- first drive assembly;

[0038] 231-cylinder;

[0039] 24-support frame;

[0040] 25-Roller brush;

[0041] 26- second drive assembly;

[0042] 261-driving motor;

[0043] 3- Slab. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. However, the utility model can be implemented in different forms and should not be interpreted as being limited to the embodiments presented here. On the contrary, providing these embodiments will make the utility model thorough and complete, and fully convey the scope of the utility model to those skilled in the art. In the accompanying drawings, for clarity, the sizes and relative sizes of layers and regions may be exaggerated, and the same reference numerals represent the same elements throughout.

[0045] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, it is obvious that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0046] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "include", "comprises", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0047] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0048] In order to facilitate those skilled in the art to understand the technical solution of the present utility model, the following technical terms are explained.

[0049] In the case of using expressions such as "at least one of A, B, and C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.). In the case of using expressions such as "at least one of A, B, or C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, or C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0050] It should be noted that, in order to facilitate those skilled in the art to better understand the technical solution of the present invention, the proportions, directions and sizes of various components in the accompanying drawings have been appropriately adjusted to increase their three-dimensional effect.

[0051] In the process of implementing the utility model, it was found that a large amount of gas will be discharged during the hot pressing of the slab by the steel strip hot press, and part of the dust in the blank will be taken out. The faster the speed of the steel strip hot press, the more dust will be discharged. At the same time, the lubricating oil between the steel strip and the hot pressing roller will evaporate during the operation of the steel strip hot press due to the high temperature (for example, the temperature range of 120℃ to 180℃). Some of the evaporated products will adhere to the roller needle along with the dust, and gradually carbonize in the high temperature environment to form solid and viscous impurities, resulting in the inflexible relative movement between the roller needle and the roller rod, and an increase in the alarm of the roller needle operation monitoring.

[0052] Figure 1 The working principle diagram of the hydraulic press in the embodiment of the utility model is schematically shown. Figure 2 A partial cross-sectional view of a steel strip hot press from a first viewing angle according to an embodiment of the utility model is schematically shown.

[0053] According to the embodiments of the present utility model, Figure 1 and Figure 2 As shown, the steel strip hot press machine 1 includes two conveying mechanisms 11 arranged up and down and two hot pressing mechanisms 12. Each conveying mechanism 11 includes a driving wheel 111, a driven wheel 112 and a steel belt 113 wound around the driving wheel 111 and the driven wheel 112. The two steel belts cooperate to drive the slab 3 to move in a certain direction. Figure 1The two hot pressing mechanisms 12 are respectively sleeved in the two conveying mechanisms 11, and the multiple parallel hot pressing rollers 12 of the two hot pressing mechanisms 12 are respectively circulated in the two steel belts 113 through roller needles 1212 to transfer heat and pressure to the steel belts 113, thereby hot pressing the slab 3 between the two steel belts 113.

[0054] The hot pressing mechanism 12 is a circulating body formed by a plurality of hot pressing rollers 12 arranged in sequence. The working section is between the hot pressing plate 15 and the steel belt 113, and the non-working section is located above or below the steel belt hot press machine 1. When working, the chains on both sides of the hot pressing rollers are driven by the driving device, and the roller rod 1211 is driven to run through the roller needle 1212. The running speed of the hot pressing mechanism 12 can be, for example, 1 / 2 of the running speed of the steel belt 113. In the working section, the steel belt 113 drives the roller rod 1211 to rotate. When the roller rod 1211 is slightly tilted, an axial component force is generated. The superposition of many axial forces will cause the steel belt to deviate. According to the roller needle cleaning device 2 of the embodiment of the utility model, a cleaning unit 22 is provided, and the driving assembly is used to drive the cleaning unit 22 in the axial direction of the roller needle 1212 (such as Figure 2 The roller 1212 can be reciprocated in the direction indicated by the X-axis shown in the figure to scrape off the impurities attached to the roller needle 1212 and avoid the accumulation of impurities. This avoids the situation where the roller needle 1212 is ejected or the roller rod 1211 is tilted due to the influence of impurities, causing the steel strip 113 to deviate, thereby ensuring the normal operation of the steel strip hot press 1 and improving the production efficiency. Among them, the impurities may include a mixture of lubricating oil and dust and carbides.

[0055] According to an embodiment of the present invention, the hot pressing roller 12 includes a roller rod 1211 for transmitting pressure and heat and roller needles 1212 located at both ends of the roller rod 1211, wherein the roller rod 1211 and the roller needles 1212 can rotate relative to each other.

[0056] According to the embodiment of the utility model, the hot pressing mechanism 12 has the core functions of transmission, heat transfer and pressure transfer. The hot pressing mechanism 12 and the conveying mechanism 11 are linked to convey the slab 3. The pressure from the pressure providing unit 14 (such as a hydraulic cylinder) is transferred to the slab 3 through the steel belt during the rolling of the hot pressing roller 12. At the same time, the heat from the hot pressing plate 15 is used to heat the slab 3 through the steel belt.

[0057] According to the embodiment of the utility model, the hot pressing roller 12 is arranged between the hot pressing plate 15 and the steel belt, and the hot pressing mechanism 12 rolls between the hot pressing plate 15 and the steel belt 113, and the cyclic motion is in the form of rolling friction. The heat transfer between the hot pressing plate 15, the roller rod 1211 and the steel belt 113 is contact heat transfer.

[0058] Figure 3A partial stereoscopic diagram of a steel strip hot press machine from a second viewing angle is schematically shown in the embodiment of the utility model. Figure 4 A partial cross-sectional view of a steel strip hot press machine according to an embodiment of the utility model from a third viewing angle is schematically shown. Figure 5 Schematically shows Figure 4 A partial enlarged view of part A of the roller needle cleaning device is shown.

[0059] One aspect of the utility model embodiment provides a roller needle cleaning device 2, such as Figures 2 to 5 As shown, the roller needle cleaning device 2 is installed on the steel strip hot press 1, and is used to clean the roller needle 1212 of the hot pressing roller 12 of the steel strip hot press 1. The roller needle cleaning device 2 includes a mounting frame 21, a cleaning unit 22 and a first driving assembly 23. The mounting frame 21 is installed on the steel strip hot press 1, and the cleaning unit 22 is telescopically mounted on the mounting frame 21 and contacts the surface of the roller needle 1212. The first driving assembly 23 is suitable for driving the cleaning unit 22 to reciprocate in the axial direction of the roller needle 1212 to scrape off impurities attached to the roller needle 1212.

[0060] According to the embodiments of the present utility model, Figures 2 to 5 As shown, the first driving assembly 23 includes an air source and a cylinder 231. The air source is suitable for providing compressed air, and the cylinder 231 is installed on the mounting frame 21. The output end of the cylinder 231 is connected to the cleaning unit 22, so that the cleaning unit 22 follows the output end and moves back and forth within the length range of the roller needle 1212 under the action of the compressed air.

[0061] According to an embodiment of the utility model, the first driving assembly 23 further includes a solenoid valve mounted on the mounting frame 21 for controlling the extension and retraction of the cylinder 231 .

[0062] According to the embodiment of the present invention, the stroke of the cylinder 231 is smaller than the length of the roller needle 1212 .

[0063] According to an embodiment of the utility model, the first driving component 23 can be time-controlled to drive the cleaning component to move in the axial direction of the roller needle 1212 and within the length range of the roller needle 1212. For example, it can work for 5 minutes to 10 minutes every 0.5 hours to 3 hours.

[0064] It should be noted that the above-mentioned logical judgments and operations only require simple logic circuits to be implemented, such as a single-chip microcomputer, a CPU, etc., and there is no need to design or develop corresponding software for them. Those skilled in the art will be able to understand, implement and reproduce them after reading the above-mentioned technical solution, and no excessive elaboration will be given here.

[0065] According to the embodiments of the present utility model, Figure 2 and Figure 3 As shown, the cleaning unit 22 is in the axial direction (such as Figure 2 The direction perpendicular to the X-axis shown in the figure Figure 2 The longitudinal direction (as indicated by the Y-axis) of the side in contact with the roller needle 1212 Figure 2 The length of the roller needles 1212 (in the direction indicated by the Y-axis shown) is greater than the spacing between two adjacent roller needles 1212, so that multiple roller needles 1212 can be cleaned simultaneously under the drive of the first driving component 23.

[0066] In an illustrative embodiment, the longitudinal length of the cleaning unit 22 is the spacing between three or five roller needles 1212 .

[0067] According to an embodiment of the present invention, the side surface of the cleaning unit 22 in contact with the roller needle 1212 and the plane where the axes of the plurality of roller needles 1212 in contact are located (eg Figure 2 The X-axis and Y-axis shown in the figure are parallel to the plane where the roller needle 1212 is located to avoid hindering the movement of the roller needle 1212.

[0068] According to an embodiment of the present invention, the shape of the cleaning unit 22 includes but is not limited to a rectangle, a trapezoid, a semicircle or a triangle.

[0069] According to an embodiment of the present invention, the cleaning unit 22 may be made of a material that is wear-resistant, high-temperature-resistant, and has a lower hardness than the roller needle 1212 , such as copper.

[0070] According to the embodiments of the present utility model, Figures 2 to 4 As shown, the roller needle cleaning device 2 also includes a support frame 24, two roller brushes 25 and a second drive assembly 26. The two roller brushes 25 are mounted on the support frame 24 and are located on both sides of the roller needles 1212 arranged in a row. The second drive assembly 26 is mounted on the support frame 24 and is suitable for driving the two roller brushes 25 to rotate in opposite directions to clean the roller needles 1212 located between the two roller brushes 25.

[0071] According to an embodiment of the utility model, the rotation directions of the two roller brushes 25 are opposite, for example, the two roller brushes 25 can rotate towards each other. By setting the rotation directions of the two roller brushes 25 to be opposite, the roller needle 1212 located between the two roller brushes 25 can be cleaned more cleanly.

[0072] According to the embodiment of the utility model, the support frame 24, the two roller brushes 25 and the second drive assembly 26 form a cleaning mechanism. It can be understood that the roller needle cleaning device 2 can include multiple cleaning mechanisms.

[0073] In an illustrative embodiment, the roller needle cleaning device 2 may include four cleaning mechanisms, which are arranged in pairs at both ends of the roller needle 1212 of the hot pressure roller 12. In the two cleaning mechanisms located on the same side of the hot pressure roller 12, the rotation directions of the roller brush 25 can be set to be opposite.

[0074] According to an embodiment of the utility model, the second driving assembly 26 includes a driving motor 261, a driving gear and a driven gear. The driving gear is connected to the first roller brush 25 of the two roller brushes 25, and is suitable for driving the first roller brush 25 to rotate under the drive of the driving motor 261. The driven gear is connected to the second roller brush 25 of the two roller brushes 25, and meshes with the driving gear, so that the second roller brush 25 rotates in the opposite direction to the first roller brush 25.

[0075] As another aspect of the embodiment of the present utility model, Figure 1 and Figure 2 As shown, a steel strip hot press machine 1 is provided, comprising two conveying mechanisms 11 arranged up and down, two hot pressing mechanisms 12 and any one of the above-mentioned roller needle cleaning devices 2. Each conveying mechanism 11 comprises a driving wheel 111, a driven wheel 112 and a steel belt 113 wound around the driving wheel 111 and the driven wheel 112, and the two steel belts 113 cooperate to drive the slab 3 to move linearly. The two hot pressing mechanisms 12 are respectively sleeved in the two conveying mechanisms 11, and the multiple parallel hot pressing rollers 12 of the two hot pressing mechanisms 12 circulate in the two steel belts 113 through roller needles 1212 to transfer heat and pressure to the steel belts 113, respectively, so as to perform hot pressing on the slab 3 between the steel belts 113.

[0076] According to the embodiments of the utility model, two conveying structures and two hot pressing mechanisms are provided so that the slab is hot pressed between the steel belts in the working direction. By providing a roller needle cleaning device, impurities attached to the roller needles are removed, thereby avoiding the obstruction of rotation between the roller needles and the roller rod caused by the accumulation of impurities, thereby avoiding the roller needles from jumping out or the steel belts from deviating, improving the working stability of the hot press machine and improving production efficiency.

[0077] According to an embodiment of the utility model, the roller needle cleaning device 2 is installed near the steel belt 113 located at the upper part, and is suitable for cleaning the roller needles 1212 of the hot pressing roller 12 surrounded by the steel belt located at the upper part. The roller needle cleaning device 2 can also be installed near the steel belt 113 located at the lower part, and is suitable for cleaning the roller needles 1212 of the hot pressing roller 12 surrounded by the steel belt located at the lower part.

[0078] According to an embodiment of the utility model, there are multiple roller needle cleaning devices 2, which are respectively arranged corresponding to the roller needles 1212 at both ends of the hot pressing roller 12, so as to respectively clean the roller needles 1212 at both ends of the roller rod 1211 in the steel belt located at the upper part and then the lower part.

[0079] It should be noted that the implementation methods not shown or described in the drawings or the text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of various elements and methods are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0080] It should also be noted that the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only reference directions of the drawings and are not intended to limit the scope of protection of the present invention. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted when they may cause confusion in the understanding of the present invention, and the shapes and sizes of the components in the drawings do not reflect the actual size and proportion, but only illustrate the contents of the embodiments of the present invention.

[0081] Unless otherwise indicated, the numerical parameters in this specification and the appended claims are approximate values ​​and can be changed according to the desired characteristics obtained by the content of the utility model. Specifically, all numbers used in the specification and claims to express the content of the composition, reaction conditions, etc., should be understood to be modified by the term "about" in all cases. In general, the meaning of the expression is to include changes in certain embodiments of ±10%, changes in certain embodiments of ±5%, changes in certain embodiments of ±1%, and changes in certain embodiments of ±0.5%.

[0082] The ordinal numbers used in the specification and claims, such as "first", "second", "third", etc., to modify the corresponding elements, do not themselves mean that the elements have any ordinal numbers, nor do they represent the order of one element and another element, or the order in the manufacturing method. The use of these ordinal numbers is only used to clearly distinguish a component with a certain name from another component with the same name.

[0083] In addition, unless the steps are specifically described or must occur in sequence, the order of the above steps is not limited to the above list, and can be changed or rearranged according to the required design. And the above embodiments can be mixed and matched with each other or with other embodiments based on design and reliability considerations, that is, the technical features in different embodiments can be freely combined to form more embodiments.

[0084] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A roller needle cleaning device, characterized in that: Installed on a steel strip hot press, used to clean the roller needles of the hot pressing rollers of the steel strip hot press, the roller needle cleaning device comprises: A mounting frame, mounted on the steel strip hot press; a cleaning unit, which is telescopically mounted on the mounting frame and contacts the surface of the roller needle; and The first driving assembly is adapted to drive the cleaning unit to reciprocate in the axial direction of the roller needle to scrape off impurities attached to the roller needle.

2. The roller needle cleaning device according to claim 1, characterized in that: The first driving assembly comprises: an air source, suitable for providing compressed air; and A cylinder is mounted on the mounting frame, and an output end of the cylinder is connected to the cleaning unit, so that under the action of the compressed air, the cleaning unit follows the output end to reciprocate within the length range of the roller needle.

3. The roller needle cleaning device according to claim 1, characterized in that: The longitudinal length of the side surface of the cleaning unit in contact with the roller needle in a direction perpendicular to the axial direction is greater than the interval between two adjacent roller needles, so that a plurality of roller needles can be cleaned simultaneously under the drive of the first driving assembly.

4. The roller needle cleaning device according to claim 3, characterized in that: The side surface of the cleaning unit in contact with the roller needle is parallel to the plane where the axes of the plurality of contacting roller needles are located, so as to avoid hindering the movement of the roller needles.

5. The roller needle cleaning device according to claim 1, characterized in that: The cleaning unit is in a rectangular, trapezoidal, semicircular or triangular shape.

6. The roller needle cleaning device according to claim 1, characterized in that: Also includes: Support frame; Two roller brushes are mounted on the support frame and are located on both sides of the roller needles arranged in a row; as well as The second driving assembly is installed on the support frame and is suitable for driving the two roller brushes to rotate in opposite directions so as to clean the roller needle located between the two roller brushes.

7. The roller needle cleaning device according to claim 6, characterized in that: The second driving assembly comprises: Drive motor; a driving gear connected to a first roller brush of the two roller brushes and adapted to drive the first roller brush to rotate under the drive of the driving motor; and The driven gear is connected to the second roller brush of the two roller brushes and meshes with the driving gear to make the second roller brush rotate in opposite directions to the first roller brush.

8. A steel strip hot press, characterized in that: include: Two conveying mechanisms arranged up and down, each of the conveying mechanisms comprises: a driving wheel, a driven wheel and a steel belt wound around the driving wheel and the driven wheel, and the two steel belts cooperate to drive the slab to move linearly; Two hot pressing mechanisms are respectively sleeved in the two conveying mechanisms, and the multiple hot pressing rollers of the two hot pressing mechanisms are circulated in the two steel belts through roller needles to transfer heat and pressure to the steel belts, thereby hot pressing the slab between the steel belts; and The roller needle cleaning device according to any one of claims 1 to 7.

9. The steel strip hot press according to claim 8, characterized in that: The roller needle cleaning device is installed near the steel belt located at the upper part, and is suitable for cleaning the roller needles of the hot pressing rollers surrounding the steel belt located at the upper part.

10. The steel strip hot press according to claim 8, characterized in that: There are multiple roller needle cleaning devices, which are respectively arranged corresponding to the roller needles at both ends of the hot pressing roller.

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