Auxiliary paving device

Abstract

The invention relates to the technical field of waterproof coating sample leveling, in particular to a paving auxiliary device which comprises a paving device die holder, a blade coating opening, a blade coating plate, an elastic assembly and a magnetic pushing assembly, and the paving device die holder comprises a rotating plate cavity and a material returning cavity. The blade coating opening is formed below the laying device die holder and communicates with the rotating plate cavity. And the blade coating plate is arranged on one side of the blade coating opening. And the elastic assembly is arranged on one side of the blade coating plate. The magnetic pushing assembly is fixedly installed on the elastic assembly. When the material scraping plate rotates to the blade coating opening, the elastic assembly pushes the material scraping plate to stretch out of the blade coating opening, the material scraping plate drives the coating to enter the rotating plate cavity, when the material scraping plate continues to rotate to the connecting position of the rotating plate cavity and the material returning cavity, the magnetic pushing assembly pushes the coating to enter the material returning cavity, and the material scraping plate can drive the coating exceeding the thickness to move. And the elastic assembly stretches out by a certain length under the action of elastic acting force, so that personal errors caused by manual operation are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of waterproof coating sample leveling, and in particular to a leveling auxiliary device. Background Art

[0002] Non-curing rubber asphalt waterproof coating is widely used in the field of building waterproofing. It has excellent adhesion, aging resistance and creep properties. When preparing non-curing rubber asphalt waterproof coating, it is necessary to prepare it in advance and perform performance tests on the prepared samples. By accurately evaluating the various performance indicators of the coating, a reliable basis can be provided for actual engineering applications.

[0003] At present, when paving samples of non-curing rubber asphalt waterproof coatings, due to different operating proficiency of personnel, when paving the waterproof coating, the thickness of the waterproof material will be uneven due to different holding angles and paving angles. In addition, since the waterproof coating is usually sticky, tailing will occur during the paving process, which will affect the paving quality of the waterproof coating. Summary of the invention

[0004] The present invention is made to solve the above-mentioned technical problems, and its purpose is to provide a paving auxiliary device, which can control the thickness of waterproof materials when paving waterproof materials such as non-curing rubber asphalt, so as to avoid being affected by human factors.

[0005] In order to achieve the above-mentioned object, the present invention provides a paving auxiliary device, comprising: a paving device die base, comprising a rotating plate cavity and a material return cavity, wherein a rotating column and a scraper plate are arranged in the rotating plate cavity, and the scraper plate rotates around the rotating column;

[0006] A scraping opening is arranged below the die base of the laying device and is connected to the rotating plate cavity; a scraping plate is arranged on one side of the scraping opening; an elastic component is arranged on one side of the scraping plate; a magnetic push component is fixedly mounted on the elastic component; wherein, when the scraper plate rotates to the scraping opening, the elastic component pushes the scraper plate to extend out of the scraping opening, and the scraper plate drives the paint into the rotating plate cavity, and when the scraper plate continues to rotate to the connection between the rotating plate cavity and the return cavity, the magnetic push component pushes the paint into the return cavity.

[0007] Preferably, the elastic component includes a support shell, a support plate and a support spring; the support shell is fixedly connected to the rotating column, the support plate is arranged in the support shell at one end close to the rotating column, and the support spring is connected to the scraper plate and the support plate.

[0008] Preferably, the magnetic push assembly includes an insulating shell, an insulating rod, a return spring, a push block and a magnetic block; wherein the insulating rod and the return spring are arranged in the insulating shell, the insulating rod is connected to the return spring and one end of the push block, and the magnetic block is arranged at the other end of the push block.

[0009] Preferably, the magnetic push assembly further comprises a conductive ring and a conductive block, the conductive ring is slidably connected to the conductive block, and the insulating rod passes through the conductive ring and is connected to the reset spring.

[0010] Preferably, it also includes a driving member, which is connected to the rotating column and drives the rotating column to rotate; a power supply component, including an insulating disk and an insulating cover, and the insulating disk rotates synchronously with the rotating column; a conductive strip is provided on the side wall of the insulating cover, and a conductive head is provided on the insulating disk corresponding to the scraper plate, and the driving member drives the insulating disk to rotate, so that the conductive strip and the conductive head are in contact to power the paving auxiliary device.

[0011] Preferably, it also includes a controller, which is arranged on the mold base of the laying device and connected to the driving member and the power supply assembly; a trigger unit, which is connected to the controller and includes an electromagnetic switch and a buzzer, and the electromagnetic switch is connected to the controller; when the conductive ring and the conductive block are connected, they are connected to the electromagnetic switch circuit.

[0012] Preferably, it also includes an electromagnetic plate, which is arranged at the connection between the rotating plate chamber and the return material chamber; when the power supply component supplies power to the electromagnetic plate, the magnetic push component moves in a direction close to the electromagnetic plate.

[0013] Preferably, it also includes a feeding assembly, which is arranged on the return material chamber and includes a sealing block and an electromagnetic push rod; the return material chamber includes a discharge port, and the sealing block is detachably installed in the discharge port; the electromagnetic push rod drives the sealing block to detach from or install in the discharge port.

[0014] Preferably, a heating device is further included, which is arranged at the bottom of the return cavity and includes a heat conducting plate and an electric heater, and the heat conducting plate is installed toward the inside of the return cavity.

[0015] Preferably, it also includes a feed port, which is arranged on the die base of the laying device and connects the outside world and the return cavity.

[0016] According to the above description and practice, the paving auxiliary device described in the present invention includes a paving device die base, a scraping opening, a scraping plate, an elastic component and a magnetic push component, wherein the paving device die base includes a rotating plate cavity and a return cavity, and a rotating column and a scraper plate are provided in the rotating plate cavity. The scraper plate rotates around the rotating column to drive the over-thick paint to move. The scraping opening is arranged below the paving device die base and is connected to the rotating plate cavity. The scraper plate is arranged on one side of the scraping opening, cooperates with the scraper plate and delivers excess paint into the return cavity to avoid excess paint always being on the scraper plate or scraper plate, causing a tailing phenomenon on the paving work surface. The elastic component is arranged on one side of the scraper plate. The magnetic push component is fixedly mounted on the elastic component. Among them, when the scraper plate rotates to the scraping opening, the elastic component pushes the scraper plate to extend out of the scraping opening, and the scraper plate drives the paint into the rotating plate cavity. When the scraper plate continues to rotate to the connection between the rotating plate cavity and the return cavity, the magnetic push component pushes the paint into the return cavity. When the paint at the scraping opening is too thick, the scraper plate can drive the paint that exceeds the thickness to move, and cooperate with the scraper plate to send the excess paint into the return cavity, thereby completing the control of the paint thickness, and the elastic component extends a certain length under the action of the elastic force, thereby avoiding human errors during manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a paving auxiliary device involved in one embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the internal structure of a paving auxiliary device involved in one embodiment of the present invention.

[0019] Figure 3 It is a schematic structural diagram of an elastic component of a paving auxiliary device involved in one embodiment of the present invention.

[0020] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure of part A in the middle.

[0021] Figure 5 It is a schematic structural diagram of a return chamber of a paving auxiliary device involved in one embodiment of the present invention.

[0022] Figure 6 For the present invention Figure 1 Schematic diagram of the enlarged structure of part B in the middle.

[0023] Figure 7 It is a schematic structural diagram of a power supply component of a paving auxiliary device involved in one embodiment of the present invention. DETAILED DESCRIPTION

[0024] The exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and fully convey the concepts of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0025] In addition, the accompanying drawings are only schematic diagrams of the present invention and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, so their repeated description will be omitted. It should be noted that in the present invention, the terms "including", "configured with", and "set in" are used to express the meaning of open-ended inclusion, and mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", etc. are only used as marks, not to limit the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The present invention discloses a paving auxiliary device, please refer to Figures 1 to 7The paving auxiliary device includes a paving device die base 1, a scraping opening 4, a scraping plate 5, an elastic component 9 and a magnetic push component 11, wherein the paving device die base 1 includes a rotating plate cavity 3 and a return cavity 10, and a rotating column 6 and a scraper plate 8 are arranged in the rotating plate cavity 3. The scraper plate 8 rotates around the rotating column 6 to drive the over-thick paint to move. The scraping opening 4 is arranged below the paving device die base 1 and is connected to the rotating plate cavity 3. The scraper plate 5 is arranged on one side of the scraping opening 4, cooperates with the scraper plate 8 and sends the excess paint into the return cavity 10, so as to avoid the excess paint always being on the scraper plate 8 or the scraper plate 5, and causing a tailing phenomenon on the paving work surface. The elastic component 9 is arranged on one side of the scraper plate 5. The magnetic push component 11 is fixedly mounted on the elastic component 9. Among them, when the scraper plate 8 rotates to the scraping opening 4, the elastic component 9 pushes the scraper plate 8 to extend out of the scraping opening 4, and the scraper plate 8 drives the paint into the turn plate cavity 3. When the scraper plate 8 continues to rotate to the connection between the turn plate cavity 3 and the return cavity 10, the magnetic push component 11 pushes the paint into the return cavity 10. When the paint at the scraping opening 4 is too thick, the scraper plate 8 can drive the paint that exceeds the thickness to move, and cooperate with the scraper plate 5 to send the excess paint into the return cavity 10, thereby completing the control of the paint thickness, and the elastic component 9 extends a certain length under the action of the elastic force, thereby avoiding human errors during manual operation.

[0028] It is understandable that the width of the paint should be smaller than the width of the scraper 5, that is, the scraper 5 can completely apply the paint in the width direction during movement to ensure the thickness control of the paint under this width and avoid waste of paint at the edge.

[0029] In some embodiments, the elastic component 9 includes a support shell 91, a support plate 92 and a support spring 93, and the support spring 93 is arranged in the support shell 91. The support shell 91 is fixedly connected to the rotating column 6 and can rotate with the rotation of the rotating column 6. The support plate 92 is arranged in the support shell 91 at one end close to the rotating column 6, and the support spring 93 is connected to the scraper plate 8 and the support plate 92. When the scraper plate 8 is in the rotating plate cavity 3, the scraper plate 8 and the support plate 92 act to compress the support spring 93. When the scraper plate 8 and the support shell 91 rotate to the scraping outlet with the rotating column 6, the support spring 93 restores the deformation to generate a force, pushing the scraper plate 8 to extend from the scraping opening 4 and abut against the surface of the coating. The scraper plate 8 continues to rotate with the rotating column 6 until it rotates to the edge of the rotating plate cavity 3 and cooperates with the scraping plate 5, bringing the excess paint into the rotating plate cavity 3, and then sending it to the return cavity 10 for retention.

[0030] In order to deliver the paint on the scraper plate 8 into the return material chamber 10, when the scraper plate 8 rotates with the rotating column 6 to the vicinity of the return material chamber 10, the magnetic push assembly 11 pushes the paint into the return material chamber 10. Specifically, in some embodiments, the paving auxiliary device includes an electromagnetic plate 111, which is arranged at the connection between the rotating plate chamber 3 and the return material chamber 10. The magnetic push assembly 11 includes an insulating shell 113, an insulating rod 114, a reset spring 115, a push block 116 and a magnetic block 117. Among them, the insulating rod 114 and the reset spring 115 are arranged in the insulating shell 113, the insulating rod 114 is connected to the reset spring 115 and one end of the push block 116, the magnetic block 117 is arranged at the other end of the push block 116, and the lower part of the push block 116 abuts against the scraper plate 8. When the scraper plate 8 rotates to the vicinity of the return chamber 10, the electromagnetic plate 111 generates an attractive force on the magnetic block 117, thereby driving the magnetic block 117, the push block 116 and the insulating rod 114 to move toward the return chamber 10 together, thereby pushing the paint on the scraper plate 8 and sending it to the return chamber 10, completing the recovery of the paint, ensuring that there is no excess paint on the scraper plate 8 after the scraper plate 8 completes one scraping, thereby avoiding the tailing phenomenon when the scraper plate 8 scrapes again, affecting the effect of paint leveling.

[0031] Furthermore, in some embodiments, the magnetic push assembly 11 also includes a conductive ring 124 and a conductive block 123, the conductive ring 124 is slidably connected to the conductive block 123, and the insulating rod 114 passes through the conductive ring 124 and is connected to the reset spring 115, the conductive ring 124 and the conductive block 123 are electrically connected to the laying device mold base 1 together to form a loop, and under some conditions, the thickness of the laid paint can be judged whether it is consistent by the distance between the contact position of the conductive ring 124 and the conductive block 123 and the rotating column 6.

[0032] In some embodiments, the magnetic push assembly 11 also includes a support block 112. Two support blocks 112 are provided and are fixedly connected to the two ends of the support shell 91 respectively. The support blocks 112 are fixedly plugged into the insulating shell 113 to achieve fixed installation of the magnetic push assembly 11 on the elastic assembly 9.

[0033] It can be understood that in some embodiments, the paving auxiliary device also includes a driving member 7 and a power supply assembly 16. The driving member 7 is connected to the rotating column 6 and drives the rotating column 6 to rotate, thereby driving the multiple scraper plates 8 to rotate to achieve the paving of the paint. The power supply assembly 16 includes an insulating disk 163 and an insulating cover 161. The insulating disk 163 rotates synchronously with the rotating column 6 to be electrically connected to the multiple magnetic push assemblies 11 in the rotating plate cavity 3 in real time. A conductive strip 162 is provided on the side wall of the insulating cover 161, and a conductive head 165 corresponding to the scraper plate 8 is provided on the insulating disk 163. The driving member 7 drives the insulating disk 163 to rotate, so that the conductive strip 162 and the conductive head 165 are in contact to power the paving auxiliary device. When the thickness of the paint exceeds the preset thickness, the scraper plate 8 drives the paint into the rotating plate chamber 3. When the scraper plate 8 rotates to the vicinity of the return chamber 10, the electromagnetic plate 111 is energized to attract the magnetic block 117 to move close to the electromagnetic plate 111, thereby sending the excess paint on the scraper plate 8 into the return chamber 10.

[0034] It can be understood that the insulating disk 163 is circumferentially provided with a plurality of insulating columns 164, and the conductive head 165 is arranged on the insulating column 164. The length of the conductive head 165 is increased so that the conductive strip 162 can be more freely arranged in the insulating cover 161, avoiding the conductive strip 162 being arranged close to the outside and easily worn or affected by other electronic components.

[0035] Since the coating may be concave due to insufficient thickness during paving, in some embodiments, the paving auxiliary device further includes a controller 2 and a trigger unit 12. The controller 2 is arranged on the paving device mold base 1, and is used to control the opening or closing of the paving auxiliary device. The controller 2 is connected to the driving member 7 and the power supply assembly 16. The trigger unit 12 is connected to the controller 2, and includes an electromagnetic switch 121 and a buzzer 122. The electromagnetic switch 121 is connected to the controller 2, and the buzzer 122 is used to remind the operator when necessary. When the conductive ring 124 and the conductive block 123 are connected, they are connected to the electromagnetic switch 121 circuit. When the scraper plate 8 scrapes from the local concave position, the coating scraped by the scraper plate 5 becomes less. When the scraper plate 8 moves to the position where the return chamber 10 opens, the conductive head 165 corresponding to the scraper plate 8 will slide in contact with the conductive strip 162. At this time, each conductive ring 124 and conductive block 123 at the scraper plate 8 is connected to the connection circuit of the electromagnetic switch 121 through the conductive strip 162 and the conductive head 165. When moving to the recessed area, since the distance between the contact position of the conductive ring 124 and the conductive block 123 and the rotating column 6 is too large, at this time, the length of the conductive block 123 connected to the conductive ring 124, the conductive strip 162, the conductive head 165 and the electromagnetic switch 121 becomes shorter, so the current passing into the electromagnetic switch 121 becomes larger, causing the moving contact of the electromagnetic switch 121 to be magnetically closed. After the controller 2 receives the closing electrical signal of the electromagnetic switch 121, it will control the buzzer 122 to work immediately to remind the personnel that there is a defect at this position. Subsequently, the staff should immediately stop moving the laying device mold base 1.

[0036] It is understandable that when the paint is flattened, since the thickness of each place cannot be accurately controlled during rough spreading, many depressions may appear. At this time, the recovered paint in the return chamber 10 can be used to supplement the depressions. In some embodiments, the flattening auxiliary device also includes a replenishing component 13, which is arranged on the return chamber 10, including a sealing block 132 and an electromagnetic push rod 133. The return chamber 10 includes a discharge port 131. The sealing block 132 can be detachably installed in the discharge port 131, and is used to deliver the paint in the return chamber 10 to the depression, and the scraper plate 8 can be used to level it again. The electromagnetic push rod 133 drives the sealing block 132 to detach from or be installed in the discharge port 131, and can start or stop releasing the paint according to actual needs.

[0037] Furthermore, in some embodiments, the feeding assembly 13 also includes a connecting rod 134, and both ends of the connecting rod 134 are respectively connected to the electromagnetic push rod 133 and the sealing block 132, thereby increasing the length of the entire feeding assembly 13, making the settable height of the return chamber 10 larger, and increasing the moving distance of the sealing block 132, thereby increasing its discharge rate.

[0038] Since the waterproof coating in the re-feeding chamber 10 stays in the re-feeding chamber 10 for an uncertain time, in order to ensure that the coating in the re-feeding chamber 10 still has good fluidity when it encounters a depression and needs to be refilled, and flows out smoothly from the discharge port 131, in some embodiments, the paving auxiliary device also includes a heating device, which is arranged at the bottom of the re-feeding chamber 10, including a heat conducting plate 19 and an electric heater 18, the heat conducting plate 19 is installed toward the inside of the re-feeding chamber 10, and the inner wall of the re-feeding chamber 10 is also provided with a mounting groove 17, and the electric heater 18 is installed in the mounting groove 17, and the electric heater 18 is turned on according to actual needs to heat the coating in the re-feeding chamber 10. In addition, the temperature of the electric heater 18 is not easy to overheat, because it is adjusted according to the material and properties of the actual coating to avoid overheating and causing the performance of the coating to be reduced or damaged.

[0039] It is understandable that when the paint content is low during rough spreading, the replenishing component 13 needs to be opened multiple times to replenish the paving working surface when the paving auxiliary device is leveling the paving working surface. At this time, the recovered paint in the return material chamber 10 is not enough to fill the recessed replenishing material. In some embodiments, the paving auxiliary device also includes a feed port, which is arranged on the paving device mold base 1, connecting the outside world and the return material chamber 10, and can replenish the paint when the return material chamber 10 is insufficient to avoid the situation where the paint in the return material chamber 10 is insufficient and cannot be filled when encountering a recess again.

[0040] In some embodiments, the paving auxiliary device also includes rollers 14, which are arranged at both ends of the lower shell of the paving device mold base 1. The paving device mold base 1 is provided with a mounting plate (not shown in the figure), and a mounting groove 17 (not shown in the figure) is provided at the bottom of the mounting plate. The roller 14 is installed in the mounting groove 17, so that the paving auxiliary device can move more easily and smoothly on the paint paving work surface, further ensuring the contact effect between the scraper plate 8 and the paint, so that the paving effect is better.

[0041] Furthermore, in actual operation, due to the different paving requirements and the properties of various waterproof coatings, the thickness requirements of the waterproof coatings are also different. In some embodiments, the paving auxiliary device also includes an adjustment component 15, which is arranged on the side wall of the paving device mold base 1 and connected to the roller 14 to adjust the distance between the roller 14 and the paving work surface. Among them, the adjustment component 15 includes a threaded column 151 fixedly installed on the outer wall of the paving device mold base 1, and the side wall of the roller 14 is provided with a strip hole 152 matching the threaded column 151. The strip hole 152 is arranged above the mounting groove 17. The threaded column 151 is threadedly connected with a crimping nut 153, and the side wall of the crimping nut 153 is against the side wall of the roller 14. Through the strip hole 152 on the roller 14, the height of the roller 14 is adjusted, thereby controlling and ensuring the consistency of the thickness of the waterproof coating, which expands the applicable scenarios of the paving auxiliary device.

[0042] In summary, when the paving auxiliary device proposed by the present invention is used, the operator adjusts the height of the roller 14 and the adjusting device according to the thickness of the waterproof material, and tightens it with the crimping nut 153 to ensure that the waterproof coating can achieve a consistent thickness after paving. When starting work, the operator starts the controller 2 on the paving auxiliary device and pushes the entire paving auxiliary device forward. The controller 2 controls the electromagnetic plate 111 and the driving member 7 to be energized. The driving member 7 drives the rotating column 6 and the insulating disk 163 to rotate synchronously and drives the scraper plate 8 to rotate at a constant speed. At this time, the conductive head 165 on the insulating disk 163 is in sliding contact with the conductive strip 162 on the insulating shell 113, and forms a loop together with the electromagnetic switch 121. When the scraper plate 8 rotates to the scraping opening 4, the scraper plate 8 is no longer blocked by the inner wall of the rotating plate cavity 3, and the supporting spring 93 recovers its deformation to push part of the scraper plate 8 out of the rotating plate cavity 3 and contact the paint. The rotating column 6 continues to rotate to scrape the paint exceeding the predetermined thickness, and works together with the scraper plate 5 to transport the excess paint to the rotating plate cavity 3. When the scraper plate 8 continues to rotate until it approaches the return cavity 10, since the electromagnetic plate 111 is energized, the magnetic attraction force generated by the electromagnetic plate 111 has an attraction effect on the magnetic block 117, thereby driving the pushing block 116 to move toward the electromagnetic plate 111, and the pushing block 116 pushes the paint on the scraper plate 8 into the return cavity 10.

[0043] When a depression appears on the paving work surface, there is less paint on the scraper plate 8, and the moving resistance of the push block 116 on the scraper plate 8 is small. At this time, the distance between the contact position of the conductive ring 124 and the conductive block 123 and the rotating column 6 is large. Therefore, compared with the thickness of the scraper plate 8, the current in the loop formed by the conductive head 165, the conductive strip 162 and the electromagnetic switch 121 becomes larger, and the magnetic attraction becomes larger to close the electromagnetic switch 121. The controller 2 responds to the closing signal of the electromagnetic switch 121, controls the buzzer 122 to work, and reminds the operator to stop moving. At the same time, the controller 2 controls the electromagnetic push rod 133 to work, push the sealing block 132 to move close to the paving work surface, open the discharge port 131 to make the paint in the return chamber 10 fall, and after the fall is completed, the electromagnetic push rod 133 moves upward and stops the buzzer 122. The operator pushes the entire paving auxiliary device to re-pave the depression to ensure that the thickness of the depression can meet the same thickness requirements.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A paving auxiliary device for smoothing paint, characterized in that: include: The paving device die base comprises a rotating plate cavity and a material return cavity, wherein a rotating column and a scraper plate are arranged in the rotating plate cavity, and the scraper plate rotates around the rotating column; A scraping opening is arranged below the die base of the laying device and is communicated with the rotating plate cavity; A scraping plate, arranged on one side of the scraping opening; An elastic component is arranged on one side of the scraper plate; A magnetic push component is fixedly mounted on the elastic component; When the scraper plate rotates to the scraping opening, the elastic component pushes the scraper plate out of the scraping opening, and the scraper plate drives the paint into the rotating plate cavity. When the scraper plate continues to rotate to the connection between the rotating plate cavity and the return cavity, the magnetic push component pushes the paint into the return cavity.

2. The paving aid according to claim 1, characterized in that: The elastic component includes a supporting shell, a supporting plate and a supporting spring; The support shell is fixedly connected to the rotating column, the support plate is arranged in the support shell at one end close to the rotating column, and the support spring is connected to the scraper plate and the support plate.

3. The paving auxiliary device according to claim 1, characterized in that: The magnetic push assembly comprises an insulating shell, an insulating rod, a reset spring, a push block and a magnetic block; The insulating rod and the reset spring are arranged in the insulating housing, the insulating rod is connected to the reset spring and one end of the pusher block, and the magnetic block is arranged at the other end of the pusher block.

4. The paving aid according to claim 3, characterized in that: The magnetic push assembly also includes a conductive ring and a conductive block, the conductive ring is slidably connected to the conductive block, and the insulating rod passes through the conductive ring and is connected to the reset spring.

5. The paving aid according to claim 4, characterized in that: Also includes: A driving member, connected to the rotating column, and driving the rotating column to rotate; A power supply assembly, comprising an insulating disk and an insulating cover, wherein the insulating disk rotates synchronously with the rotating column; A conductive strip is arranged on the side wall of the insulating cover, and a conductive head corresponding to the scraper plate is arranged on the insulating disk. The driving member drives the insulating disk to rotate so that the conductive strip and the conductive head are in contact to supply power to the paving auxiliary device.

6. The paving aid according to claim 5, characterized in that: Also includes: A controller, arranged on the die base of the laying device and connected to the driving member and the power supply assembly; A trigger unit, connected to the controller, comprising an electromagnetic switch and a buzzer, wherein the electromagnetic switch is connected to the controller; When the conductive ring is connected to the conductive block, it is connected to the electromagnetic switch circuit.

7. The paving aid according to claim 5, characterized in that: Also includes: An electromagnetic plate is arranged at the connection between the rotating plate chamber and the return material chamber; When the power supply component supplies power to the electromagnetic plate, the magnetic push component moves toward a direction close to the electromagnetic plate.

8. The paving aid according to claim 1, characterized in that: Also includes: A feeding assembly is arranged on the feeding chamber, comprising a sealing block and an electromagnetic push rod; The return material cavity comprises a discharge port, and the sealing block is detachably installed in the discharge port; The electromagnetic push rod drives the sealing block to be separated from or installed at the discharge port.

9. The paving aid according to claim 8, characterized in that Also includes: The heating device is arranged at the bottom of the return cavity and comprises a heat conducting plate and an electric heater. The heat conducting plate is installed toward the inside of the return cavity.

10. The paving aid according to claim 8, characterized in that Also includes: The heating device is arranged at the bottom of the return cavity and comprises a heat conducting plate and an electric heater. The heat conducting plate is installed toward the inside of the return cavity.

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