Feeding mechanism for road marking hot-melting ruling machine

Abstract

The utility model discloses a feeding mechanism for a road marking hot-melting ruling machine, relates to the technical field of road marking equipment, and is used for solving the problem of non-uniform feeding of a feeding mechanism in the prior art. The feeding mechanism comprises a feeding pipeline, a feeding port and a feeding port are formed in the two ends of the feeding pipeline respectively, the feeding port is used for conveying the hot-melt coating to the road marking hot-melt marking machine body, the feeding port is used for filling the hot-melt coating, the inner wall of the feeding pipeline is of a cylindrical structure, and the two ends of the feeding pipeline are a driving end and a discharging end respectively. The feeding opening is formed in the discharging end; the conveying driving structure is connected with the driving end of the feeding pipeline, and the conveying driving structure is used for providing power to convey the hot-melt coating at the feeding port to the feeding port; and the heat preservation structure is arranged on the outer side of the feeding pipeline and used for heating the feeding pipeline through heat conduction oil so as to keep the molten state of the hot melting coating, and the heat conduction oil communicates with an external heating pumping structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to road marking equipment technical field especially is related to a kind of feeding mechanism for road marking hot melt marking machine. BACKGROUND

[0002] Road marking is an important facility in modern traffic management, through marking line, arrow, text and other signs on the road surface, to guide, warning and standardize traffic behavior. As a mainstream construction method, hot melt marking technology is widely used in various road construction scenes by heating hot melt paint to a molten state and uniformly coating on the road surface to form a marking with strong adhesion and high durability. In order to ensure the clarity, consistency and durability of the marking, strict requirements are put forward for the uniformity and accuracy of paint delivery during construction.

[0003] However, the feeding mechanism of the existing road marking hot melt marking machine mostly relies on the natural flow of paint or simple mechanical delivery method. Due to the limitation of equipment structure and control technology, the feeding process is difficult to realize stable and uniform feeding, which leads to uneven distribution of paint during marking construction. This unevenness directly causes the problem of inconsistent marking thickness and width, affecting the visual effect and service life of the marking, and thus reducing the overall construction quality.

[0004] Therefore, the feeding mechanism in the prior art has the problem of uneven feeding, which is difficult to meet the high-standard construction requirements. SUMMARY

[0005] The utility model aims at at least one of the technical problems existing in the prior art. Therefore, one purpose of the utility model is to provide a feeding mechanism for road marking hot melt marking machine.

[0006] According to the feeding mechanism for road marking hot melt marking machine provided by the utility model, the feeding mechanism comprises a feeding pipe, a feeding port and a feeding inlet are arranged at both ends of the feeding pipe respectively, wherein the feeding port is used to deliver hot melt paint to the main body of the road marking hot melt marking machine, the feeding inlet is used to fill the hot melt paint, the inner wall of the feeding pipe is a cylindrical structure, the two ends of the feeding pipe are a driving end and a discharging end respectively, and the feeding port is arranged on the discharging end.

[0007] A conveying driving structure is connected with the driving end of the feeding pipe, which is used to provide power to deliver the hot melt paint of the feeding inlet to the feeding port.

[0008] A heat preservation structure is arranged outside the feeding pipe, which is used to heat the feeding pipe by heat conducting oil to maintain the molten state of the hot melt paint, and the heat conducting oil is communicated with an external heating pumping structure.

[0009] In some examples of the utility model, the conveying driving structure comprises:

[0010] A spiral rod is coaxially arranged with the feeding pipe;

[0011] A driving device is drivingly connected with the spiral rod.

[0012] In some examples of the utility model, the driving device is fixedly arranged at the driving end of the feeding pipe; the driving end of the feeding pipe is provided with a limiting block, the center of the limiting block is provided with a through hole, the spiral rod passes through the through hole and is drivingly connected with the driving device; the feeding inlet is arranged on the side wall of the feeding pipe, and the position of the feeding inlet is adapted to the working condition.

[0013] In some examples of the utility model, a tension adjusting mechanism is arranged between the driving device and the feeding pipe, and the tension adjusting mechanism is used for sealing the feeding pipe.

[0014] In some examples of the utility model, the tension adjusting mechanism comprises:

[0015] A sealing piece is made of high-temperature-resistant material, arranged between the spiral rod and the feeding pipe, and tightly attached to the limiting block;

[0016] An adjusting cover plate is provided with a threaded hole, a sleeve matched with the end of the spiral rod is arranged at the bottom, and the sleeve is used for sleeving the spiral rod;

[0017] An adjusting bolt is used for fixing the adjusting cover plate and the limiting block.

[0018] In some examples of the utility model, the heat preservation structure comprises:

[0019] A heat conduction layer is attached to the outer wall of the feeding pipe and is used for transferring the heat of the heat conduction oil to the feeding pipe;

[0020] A heat insulation layer covers the heat conduction layer and forms a cavity with the heat conduction layer, the cavity is filled with heat conduction oil, and an oil outlet and an oil inlet are arranged on the heat insulation layer and are respectively communicated with an external heating and pumping structure.

[0021] In some examples of the utility model, a bearing box and a speed reducer are arranged between the driving device and the tension adjusting mechanism, and the bearing box, the speed reducer, the tension adjusting mechanism and the spiral rod are coaxially installed.

[0022] In some examples of the utility model, the driving device is a driving motor or a hydraulic motor.

[0023] In some examples of the utility model, the inlet is provided with a detachable cover plate for sealing the feeding pipe.

[0024] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or will be known by the practice of the utility model to have the following beneficial effects:

[0025] The utility model provides a kind of feeding mechanism for road marking hot melt marking machine, by the collaborative design of feeding pipe, conveying drive structure and heat preservation structure, it is technically overall solved the uneven problem existing in feeding process.Feeding pipe adopts cylindrical inner wall design, and feeding port and inlet are reasonably arranged in driving end and discharge end, form smooth, continuous flow path, effectively reduce paint flow resistance, prevent accumulation or deflection phenomenon.Conveying drive structure is composed of helical rod and driving device arranged coaxially, provide uniform thrust by the stable rotation of helical rod, avoid local accumulation or block, realize paint linear flow.Heat preservation structure is composed of heat conducting layer and heat insulation layer, by circulating heat conducting oil to uniformly heat feeding pipe, make pipe paint always keep molten state, prevent solidification or flow rate variation due to uneven temperature distribution.The comprehensive design above, the utility model realizes overall optimization in flow path, power drive and temperature control three aspects, completely solves the uneven problem of feeding caused by flow rate fluctuation, paint accumulation or condensation solidification in traditional feeding device, significantly improves the continuity and stability of feeding, provides reliable guarantee for the efficient operation of road marking hot melt marking machine. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will be a brief introduction to the drawings needed to be used in embodiment or prior art description, obviously, the drawings in the following description are some embodiments of the utility model, for those skilled in the art, without creative labor, other drawings can also be obtained according to these drawings.

[0027] Figure 1 It is a structure schematic view of the feeding mechanism for road marking hot melt marking machine according to the utility model;

[0028] Figure 2 It is another structure schematic view of the feeding mechanism for road marking hot melt marking machine according to the utility model under another visual angle;

[0029] Figure 3 It is Figure 2 Enlarged view of area A in the middle;

[0030] Figure 4The utility model provides a schematic diagram of internal structure of feeding mechanism for road marking hot melting marking machine is provided,

[0031] Figure 5 For Figure 4 The enlarged view of the tension adjusting mechanism.

[0032] Marked for explanation:

[0033] 100 - feeding pipe; 110 - feeding port; 120 - inlet; 130 - driving end; 140 - discharge end; 150 - limiting block; 200 - conveying driving structure; 210 - screw rod; 220 - driving device; 300 - heat preservation structure; 310 - heat conducting layer; 320 - heat insulation layer; 330 - cavity; 340 - oil outlet; 350 - oil inlet; 400 - tension adjusting mechanism; 410 - sealing element; 420 - adjusting cover plate; 430 - sleeve; 440 - adjusting bolt;

[0034] 500 - bearing box;

[0035] 600 - speed reducer;

[0036] 700 - detachable cover plate. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0038] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the features limited as "first", "second" can be explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0039] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can through intermediate medium indirectly connect, can be two elements inside the intercommunication. For ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0040] The embodiment of the utility model is described in detail below, and the example of embodiment is shown in the drawing, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar function throughout. The embodiment described below by referring to the drawings is exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.

[0041] Figure 1 It is a structure schematic view of the feeding mechanism for road marking hot melt marking machine provided according to the utility model; Figure 2 It is a structure schematic view of the feeding mechanism for road marking hot melt marking machine provided according to the utility model from another view; Figure 3 It is Figure 2 The enlarged view of A area in the middle; Figure 4 It is an internal structure schematic view of the feeding mechanism for road marking hot melt marking machine provided according to the utility model; Figure 5 It is Figure 4 The enlarged view of tensioning adjusting mechanism in the middle.

[0042] The following refers to Figure 1-5 The feeding mechanism for road marking hot melt marking machine according to the embodiment of the utility model is described, and the feeding mechanism is used to convey hot melt paint, and includes:

[0043] The feeding pipe 100 is provided with feeding port 110 and inlet 120 at both ends respectively, wherein the feeding port 110 is used to convey hot melt paint to the main body of road marking hot melt marking machine, the inlet 120 is used to fill the hot melt paint, the inner wall of the feeding pipe 100 is cylindrical structure, the both ends of the feeding pipe 100 are driving end 130 and discharge end 140 respectively, and the feeding port 110 is arranged on the discharge end 140;

[0044] The conveying driving structure 200 is connected with the driving end 130 of the feeding pipe 100, and the conveying driving structure 200 is used to provide power to convey the hot melt paint of the inlet 120 to the feeding port 110;

[0045] A heat preservation structure 300 is arranged outside the feeding pipe 100, and is used for heating the feeding pipe 100 by heat conduction oil to keep the hot melt coating in a molten state, and the heat conduction oil is communicated with an external heating pumping structure.

[0046] Specifically, the utility model discloses a feeding pipe 100, conveying drive structure 200 and the heat preservation structure 300's synergic design, from the technology, the uneven problem that exists in the feeding process is solved comprehensively. Feeding pipe 100 adopts the design of cylindrical inner wall, and is reasonably arranged feeding port 110 and inlet 120 in drive end 130 and discharge end 140, forms the smooth, continuous flow path, effectively reduces the coating flow resistance, prevents the accumulation or the deflection phenomenon. Conveying drive structure 200 is composed of the helical rod 210 and drive device 220 of coaxial arrangement, and uniform thrust is provided through the stable rotation of helical rod 210, avoids partial accumulation or blockage, realizes the linear flow of coating. Heat preservation structure 300 is composed of heat conduction layer 310 and heat insulation layer 320, and the feeding pipe 100 is uniformly heated through circulating heat conduction oil, so that the coating in the pipe always keeps the molten state, prevents the solidification or flow rate variation caused by uneven temperature distribution. In summary, the utility model realizes the comprehensive optimization in three aspects of flow path, power drive and temperature control, completely solves the uneven problem of feeding caused by flow fluctuation, coating accumulation or condensation solidification in traditional feeding device, significantly improves the continuity and stability of feeding, and provides reliable guarantee for the efficient operation of road marking hot melt marking machine.

[0047] Please refer to Figure 1 、 Figure 2 、 Figure 4 In some examples of the utility model, the conveying drive structure 200 includes: a helical rod 210 coaxially arranged with the feeding pipe 100; and a drive device 220 drivingly connected with the helical rod 210.

[0048] Specifically, the helical rod 210 rotates axially along the feeding pipe 100 by the rotary power provided by the drive device 220, and the thread design of the helical rod 210 can gradually push the hot melt coating to the feeding port 110, realizing stable and efficient conveying. The coaxial structure design ensures uniform power transmission and avoids deviation or jamming during conveying. The pitch and diameter of the helical rod 210 can be optimized and adjusted according to the viscosity and flowability of the coating to meet the needs of different working conditions.

[0049] In actual operation, the drive device 220 such as a driving motor or a hydraulic motor transmits power to the helical rod 210 through a mechanical coupling or a direct shaft connection. During the feeding process, the rotation speed and direction of the helical rod 210 can be adjusted by the control module of the drive device 220, so as to realize accurate control of the conveying amount and speed of the coating.

[0050] Referring to Figure 1 , Figure 2 , Figure 4 In an embodiment of the present application, the driving device 220 is fixedly arranged at the driving end 130 of the feeding pipe 100; the driving end 130 of the feeding pipe 100 is provided with a limiting block 150, a through hole is arranged at the center of the limiting block 150, the screw rod 210 passes through the through hole and is drivingly connected with the driving device 220; the feeding inlet 120 is arranged at the side wall of the feeding pipe 100, and the position of the feeding inlet 120 is adapted to the working condition. When the spraying position is at the left side of the feeding pipe 100, the feeding inlet 120 is arranged at the right side of the feeding pipe 100, so that the filling and conveying of the hot melt coating are facilitated. When the spraying position is at the right side of the feeding pipe 100, the feeding inlet 120 is arranged at the left side of the feeding pipe 100,

[0051] The driving device 220 is firmly connected with the driving end 130 of the feeding pipe 100 through a fixing structure, so as to provide stable driving power for the screw rod 210. The driving end 130 of the feeding pipe 100 is provided with the limiting block 150, the limiting block 150 limits and supports the screw rod 210 through the through hole at the center thereof, so that the screw rod 210 can still keep accurate axial rotation under the high-temperature and high-pressure environment, and deviation and vibration are avoided.

[0052] The feeding inlet 120 is arranged at the side wall of the feeding pipe 100 and is optimally designed according to the position requirement of the actual working scene. After the hot melt coating enters the feeding pipe 100 from the feeding inlet 120, the screw rod 210 pushes the coating along the feeding pipe 100 to the feeding outlet 110 through rotary motion under the driving of the driving device 220, so that stable and efficient conveying is realized. The limiting block 150 simultaneously plays a dual role of structural support and sealing, so that the hot melt coating in the pipe is prevented from leaking during the conveying process.

[0053] Referring to Figure 4 , Figure 5 In an embodiment of the present application, a tensioning adjusting mechanism 400 is arranged between the driving device 220 and the feeding pipe 100, and the tensioning adjusting mechanism 400 is used for sealing the feeding pipe 100.

[0054] Specifically, the tensioning adjusting mechanism 400 is arranged between the driving device 220 and the feeding pipe 100, and efficient sealing is realized by adjusting the contact pressure of the sealing piece 410 with the feeding pipe 100 and the screw rod 210. This structure not only avoids leakage of the hot melt coating under high-temperature and high-pressure conditions, but also provides a supporting action between the driving device 220 and the feeding pipe 100 through structural design, so as to absorb vibration and stress in the transmission process.

[0055] Please refer to Figure 4 、 Figure 5 As shown in the figure, in an embodiment of the present application, the tensioning adjusting mechanism 400 comprises:

[0056] A sealing member 410 made of high-temperature-resistant material is arranged between the screw rod 210 and the feeding pipe 100, and is in close contact with the limiting block 150; an adjusting cover plate 420 is provided with a threaded hole, and a sleeve 430 matched with the end of the screw rod 210 is arranged at the bottom of the adjusting cover plate 420 for sleeving the screw rod 210; and an adjusting bolt 440 is used to fix the adjusting cover plate 420 and the limiting block 150.

[0057] In this embodiment, the tensioning adjusting mechanism 400 realizes the compression of the sealing member 410 through the cooperation of the adjusting cover plate 420 and the adjusting bolt 440. The sealing member 410 is arranged at the driving end 130 of the feeding pipe 100 and is in contact with the screw rod 210 and the limiting block 150 to form an annular sealing structure, thereby preventing the hot melt coating from leaking. The sleeve 430 structure of the adjusting cover plate 420 is used to fix the screw rod 210 at the center position while ensuring that the rotational freedom degree of the screw rod 210 is not limited. During operation, the adjusting bolt 440 is tightened through the threaded hole to adjust the cover plate 420, so that the cover plate applies pressure downward to compress the sealing member 410, the feeding pipe 100 and the limiting block 150, thereby achieving the ideal sealing effect. When it is necessary to loosen or replace the sealing member 410, the adjusting bolt 440 is loosened, and the adjusting cover plate 420 can be quickly disassembled, which is convenient for maintenance and replacement of the sealing member 410.

[0058] Through the above structure, efficient sealing between the feeding pipe 100 and the screw rod 210 is realized, which effectively prevents the hot melt coating from leaking in a high-temperature and high-pressure environment and ensures the safe operation of the feeding system and the cleanliness of the environment. The adjustable structure of the adjusting cover plate 420 and the adjusting bolt 440 enables the compression degree of the sealing member 410 to be flexibly adjusted to adapt to different working conditions, and facilitates the operator to quickly replace or maintain the sealing member 410, thereby reducing downtime and maintenance costs. The sealing member 410 is made of high-temperature-resistant material and can be stably operated for a long time, thereby enhancing the high-temperature adaptability of the system; the sleeve 430 design of the adjusting cover plate 420 ensures the center positioning and rotational stability of the screw rod 210, effectively reduces vibration and wear, and thereby improves the operation reliability and service life of the feeding mechanism.

[0059] Please refer to Figure 4 As shown in the figure, in an embodiment of the present application, the heat preservation structure 300 comprises:

[0060] A heat-conducting layer 310 is attached to the outer wall of the feeding pipe 100, and is used to transfer the heat of the heat-conducting oil to the feeding pipe 100.

[0061] A heat-insulating layer 320 is wrapped around the heat-conducting layer 310 and forms a cavity 330 filled with heat-conducting oil. The heat-insulating layer 320 is provided with an oil outlet 340 and an oil inlet 350, which are respectively connected to an external heating and pumping structure.

[0062] Specifically, the heat preservation structure 300 realizes efficient heat preservation of the feeding pipe 100 through the cooperation of the heat-conducting layer 310 and the heat-insulating layer 320. The heat-conducting oil enters the cavity 330 in the heat-insulating layer 320 from the external heating and pumping structure through the oil inlet 350. The heat-conducting layer 310 is attached to the outer wall of the feeding pipe 100, and transfers the heat of the heat-conducting oil to the pipe, so that the hot melt coating inside the pipe remains in a molten state. The heat-insulating layer 320 wraps around the heat-conducting layer 310, reducing heat loss to the outside and improving heat utilization efficiency. At the same time, it provides a closed circulation channel for the heat-conducting oil, ensuring efficient operation of the system.

[0063] After the heat-conducting oil completes heat transfer, it returns to the external heating and pumping structure through the oil outlet 340 for reheating, forming a circulating heating system and realizing constant temperature heat preservation. This design ensures uniform temperature distribution of the feeding pipe 100, effectively avoiding problems such as solidification and poor delivery of the coating.

[0064] Through the above structure, the heat preservation structure 300 realizes the efficient constant temperature heat preservation function of the feeding pipe 100, ensuring that the hot melt coating remains in a molten state during the delivery process and avoiding solidification and blockage problems caused by temperature fluctuations. The wrapping of the heat-insulating layer 320 effectively reduces heat loss, reduces energy consumption, and improves the thermal efficiency of the system. The design of the heat-conducting oil circulation system is simple and easy to maintain, and can adapt to various working conditions, providing reliable protection for the stable operation of the feeding system.

[0065] It is worth noting that the heat-conducting layer 310 can be made of high-thermal-conductivity metal materials such as aluminum foil or copper foil; composite heat-conducting film can also be used to increase heat transfer efficiency and reduce material cost, while the heat-insulating layer 320 can be made of ceramic fiber, aerogel or polyurethane foam to further enhance the heat-insulating effect; an aluminum foil or waterproof coating can be added to the outer surface to improve the resistance to environmental influences; the heat-conducting medium can be selected according to the working conditions, such as high-temperature silicone oil or water-based heat-conducting liquid, to adapt to different temperature ranges and heat conduction requirements.

[0066] Please refer to Figure 1 、 Figure 2 、 Figure 4In an embodiment of the utility model, bearing box 500 and speed reducer 600 are arranged between driving device 220 and tight adjusting mechanism 400, bearing box 500, speed reducer 600, tight adjusting mechanism 400 and spiral rod 210 are coaxially installed.

[0067] In this embodiment, driving device 220 is connected with spiral rod 210 through speed reducer 600, and speed reducer 600 is used to convert the high-speed and low-torque power provided by driving device 220 into low-speed and high-torque output, so as to ensure that spiral rod 210 has sufficient driving force when conveying hot melt coating. Bearing box 500 arranged between speed reducer 600 and spiral rod 210 plays a supporting role, bearing box 500 is arranged between driving device 220 and spiral rod 210, and mainly provides accurate radial and axial support for spiral rod 210, reduces deviation and vibration in the rotating process, and ensures the stable operation of spiral rod 210. Bearing box 500 is internally provided with high-precision bearings (such as rolling bearings or sliding bearings), which can effectively reduce the friction loss of spiral rod 210 during high-speed rotation, simultaneously absorb uneven stress generated in the feeding process, and prevent spiral rod 210 from swinging or deviating when conveying hot melt coating.

[0068] Bearing box 500, speed reducer 600, tight adjusting mechanism 400 and spiral rod 210 are coaxially arranged along the axial direction of feeding pipe 100, so as to ensure the efficient transmission of power and the stability of the mechanical structure. Tight adjusting mechanism 400 seals feeding pipe 100 through sealing element 410, and further reduces the leakage risk and friction resistance of the bearing in cooperation with bearing box 500. The whole structure design not only improves the operation efficiency of the feeding system, but also prolongs the service life of the equipment.

[0069] In an embodiment of the utility model, driving device 220 is a driving motor or a hydraulic motor.

[0070] Driving device 220 serves as the power source of the feeding system and provides rotating power for spiral rod 210. The driving motor is suitable for occasions with stable power supply, and is directly connected with speed reducer 600 through the output shaft, so as to convert the motor power with high rotating speed and low torque into low rotating speed and high torque output suitable for the operation of spiral rod 210, so as to ensure that the hot melt coating can be stably and efficiently conveyed. The speed and direction of the motor can be controlled through a frequency converter, so as to accurately adjust the feeding speed and quantity.

[0071] Driving device 220 can also adopt a hydraulic motor, which is driven to rotate by high-pressure oil provided by a hydraulic pump and outputs high-torque power. The hydraulic motor has the characteristics of being able to operate in harsh environments and adapting to frequent start and stop operation requirements. The hydraulic system realizes the stable transmission of power through a regulating valve, and can accurately control the feeding intensity through pressure adjustment.

[0072] Two driving modes are coaxially connected with the speed reducer 600, the bearing box 500 and the screw rod 210, so as to ensure the efficiency of power transmission and the stability of system operation.

[0073] Please refer to Figure 1 、 Figure 2 In an embodiment of the utility model, the inlet 120 is provided with a detachable cover plate 700 for sealing the feeding pipe 100.

[0074] Specifically, the detachable cover plate 700 of the inlet 120 is fixedly connected with the sidewall of the feeding pipe 100 through bolts, buckles or rotary locking mechanisms. The cover plate is designed as a reusable sealing member 410, which provides sealing protection when the feeding pipe 100 is not in use, preventing dust, particulate matter or other external impurities from entering the pipe and avoiding pollution of the hot melt coating and blockage of the feeding system.

[0075] In use, the cover plate can be quickly detached for convenient filling of the hot melt coating. After the filling of the coating is completed, the operator resets and refixes the cover plate to ensure the airtightness of the inlet 120 and maintain the clean and stable operating environment inside the feeding pipe 100. The cover plate is made of high-temperature-resistant material and can maintain good sealing performance in a long-term high-temperature environment. A heat-insulating coating or handle is added to the surface of the cover plate for safe operation of the operator.

[0076] In addition, the sealing structure of the cover plate cooperates with the overall design of the feeding pipe 100 to maintain the constant pressure inside the feeding pipe 100, ensuring smooth and stable coating delivery.

[0077] Through the above structure, the detachable cover plate 700 of the inlet 120 can effectively seal the feeding pipe 100, preventing dust, particulate matter or other external impurities from entering the pipe when not in use, maintaining the cleanliness of the internal environment and thus avoiding pollution of the hot melt coating or blockage of the delivery pipe. The quick detachable design of the cover plate improves the operation convenience, facilitates the filling of the coating and the cleaning and maintenance of the pipe, and reduces downtime. The cover plate is made of high-temperature-resistant and corrosion-resistant material and can operate stably in a high-temperature environment for a long time, enhancing the reliability and durability of the system. At the same time, the cover plate provides good airtightness during delivery, avoiding leakage of the coating and maintaining the stable pressure inside the feeding pipe 100, thus ensuring smooth delivery of the coating.

[0078] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0079] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A feed mechanism for a road marking hot melt scribe machine, characterised in that, The utility model relates to a kind of hot melt coating feeding device for road marking hot melt marking machine, including: Feeding pipe, the both ends of the feeding pipe are respectively provided with feeding port and inlet, wherein the feeding port is used to deliver hot melt coating to the main body of road marking hot melt marking machine, the inlet is used to fill the hot melt coating, the inner wall of the feeding pipe is cylindrical structure, the both ends of the feeding pipe are respectively driving end and discharge end, and the feeding port is arranged on the discharge end; Conveying drive structure, which is connected with the driving end of the feeding pipe, is used to provide power to convey the hot melt coating of the inlet to the feeding port; Heat preservation structure is arranged outside the feeding pipe, and the feeding pipe is heated by heat-conducting oil to maintain the molten state of the hot melt coating, and the heat-conducting oil is communicated with the external heating pumping structure.

2. The feed mechanism for a road marking hot melt striping machine of claim 1 wherein, The conveying drive structure includes: A screw rod is coaxially arranged with the feeding pipe; A driving device is drivingly connected with the screw rod.

3. The feed mechanism for a thermofusion road marking paver according to claim 2, wherein, The driving device is fixedly arranged at the driving end of the feeding pipe, and the driving end of the feeding pipe is provided with a limiting block, the center of the limiting block is provided with a through hole, the screw rod passes through the through hole and is drivingly connected with the driving device, and the inlet is arranged on the side wall of the feeding pipe, and the position of the inlet is adapted to the working condition.

4. The feed mechanism for a thermofusion road marking paver according to claim 3, wherein, A tensioning adjusting mechanism is arranged between the driving device and the feeding pipe, and the tensioning adjusting mechanism is used to seal the feeding pipe.

5. The feed mechanism for a road marking hot melt striping machine of claim 4 wherein, The tensioning adjusting mechanism includes: A sealing member made of high-temperature-resistant material is arranged between the screw rod and the feeding pipe, and the sealing member is tightly attached to the limiting block; An adjusting cover plate is provided with a screw hole and a sleeve at the bottom for sleeving the screw rod, and the sleeve is matched with the end of the screw rod; An adjusting bolt is used to fix the adjusting cover plate and the limiting block.

6. The feed mechanism for a thermofusion road marking paver according to claim 1 wherein, The heat preservation structure includes: A heat-conducting layer is attached to the outer wall of the feeding pipe, and the heat-conducting layer is used to transfer the heat of heat-conducting oil to the feeding pipe; A heat-insulating layer covers the heat-conducting layer and forms a cavity, the cavity is filled with heat-conducting oil, and the heat-insulating layer is provided with an oil outlet and an oil inlet, which are respectively communicated with the external heating pumping structure.

7. The feed mechanism for a thermofusion road marking paver according to claim 4 wherein, A bearing box and a speed reducer are arranged between the driving device and the tensioning adjusting mechanism, and the bearing box, the speed reducer, the tensioning adjusting mechanism and the screw rod are coaxially installed.

8. The feed mechanism for a thermofusion road marking paver according to claim 7, wherein, The driving device is a driving motor or a hydraulic motor.

9. The feed mechanism for a thermofusion road marking paver according to claim 7 wherein, The inlet is provided with a detachable cover plate for sealing the feeding pipe.

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