Inner and outer cylinder hot melt connection device and method for processing fiber roller brush of floor sweeping robot

Abstract

The present invention discloses an internal and external cylinder hot melt connection device and method for processing the fiber roller brush of a floor sweeping robot, which relates to the technical field of floor sweeping robot processing. The present invention includes a processing box, a roller brush outer cylinder, and a roller brush inner cylinder, and further includes: a bearing plate disposed inside the processing box; a positioning unit including an erection assembly and a sealing and pushing assembly; a hot melt connection unit including an extrusion assembly and a liquid injection assembly, wherein a sealing liquid injection ring is provided inside the extrusion assembly, and a plurality of liquid injection holes for injecting hot melt adhesive are provided on the sealing liquid injection ring. The advantages are as follows: The present invention adopts a connection method of first performing preliminary positioning of the roller brush outer cylinder and the roller brush inner cylinder, and then directly injecting glue into the gap between the two, which can make the hot melt adhesive completely fill the space between the roller brush outer cylinder and the roller brush inner cylinder, without connection gaps and dead corners, effectively avoiding the situation where the sealant is scraped off due to applying glue first and then installing, and effectively improving the connection comprehensiveness and stability of the inner and outer cylinders of the fiber roller brush.

Description

Technical Field

[0001] The present invention relates to the technical field of floor sweeping robot processing, and particularly to an internal and external cylinder hot melt connection device and method for processing the fiber roller brush of a floor sweeping robot. Background Art

[0002] A floor sweeping robot is a smart home device that detects and cleans dust and garbage in a room through sensors, a navigation system, and intelligent algorithms. During the processing of the fiber roller brush cylinder therein, a hot melt connection device is usually used to inject hot melt adhesive between the outer roller brush cylinder and the inner roller brush cylinder to complete the tight connection between the outer roller brush cylinder and the inner roller brush cylinder;

[0003] Existing hot melt connection devices use various methods to connect the outer roller brush cylinder and the inner roller brush cylinder. For example, an internal and external cylinder hot melt connection device for processing a fiber roller brush with the publication number CN117429060A, which relates to the technical field of roller brush production and processing, includes a bottom plate. A control device is arranged on the bottom plate. A vertical plate is arranged on the bottom plate, and the vertical plate is fixedly connected to the bottom plate. There are two groups of vertical plates. Heating devices are arranged on the surfaces of the opposite sides of the two vertical plates in the same group, and the heating devices are used to heat the outer surface of the inner cylinder; A feeding mechanism and a driving mechanism are arranged on the bottom plate; An inner support mechanism is arranged on the driving mechanism;

[0004] When the existing connection device is making a connection, it usually first applies hot melt adhesive on the inner cylinder and then sleeves the outer cylinder on the inner cylinder for fixation. This fixing method causes the inner wall of the outer cylinder to inevitably scrape on the inner cylinder when the outer cylinder is sleeved on the inner cylinder, easily scraping off the already applied hot melt adhesive on the inner cylinder, resulting in void areas in the hot melt adhesive outside the inner cylinder, affecting the overall connection stability. For example, in the above-mentioned referenced prior art, this device uses the cooperation of an inner cylinder feeding component and an outer cylinder feeding component. After the inner cylinder is coated, the outer cylinder is directly sleeved, causing the hot melt adhesive outside the inner cylinder to be scraped off during the sleeving, resulting in voids in the hot melt adhesive between the inner and outer cylinders, that is, there is no hot melt adhesive in some areas between the inner and outer cylinders, resulting in the inability to tightly connect the inner and outer cylinders, having certain limitations;

[0005] Therefore, it is urgently necessary to design an internal and external cylinder hot melt connection device and method for processing the fiber roller brush of a floor sweeping robot to solve the above problems. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides an internal and external cylinder hot melt connection device and method for processing the fiber roller brush of a floor sweeping robot, which solves the problems raised in the above background art.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: An internal and external cylinder hot melt connection device for processing the fiber roller brush of a floor sweeping robot, including a processing box and a roller brush outer cylinder and a roller brush inner cylinder used to form the fiber roller brush cylinder of the floor sweeping robot, further including:

[0008] A bearing plate, which is arranged inside the processing box;

[0009] A positioning unit, which is arranged on the bearing plate and includes an erection component and a sealing and pushing component. Multiple support abutting plates for positioning the inner cylinder of the roller brush are arranged inside the erection component, and a sealing ring is arranged inside the sealing and pushing component. The support and hot melt sealing between the inner cylinder and the outer cylinder of the roller brush are realized through the support of the sealing ring;

[0010] A hot melt connection unit, which is arranged inside the processing box and includes an extrusion component and a liquid injection component. A sealed liquid injection ring is arranged inside the extrusion component, and multiple liquid injection holes for injecting hot melt adhesive are arranged on the sealed liquid injection ring. The liquid injection component is used to inject a certain amount of hot melt adhesive between the inner cylinder and the inner cylinder of the roller brush through the liquid injection holes, and cooperate with the sealing ring to realize the full-sealed injection of the hot melt adhesive.

[0011] Preferably, a lifting opening and closing door is slidably installed outside the processing box, and an observation window is arranged on the lifting opening and closing door. The lifting opening and closing door is used to seal the processing box and facilitate the placement and taking of the inner cylinder and the outer cylinder of the roller brush;

[0012] A plurality of heat dissipation pipes for heat dissipation and ventilation are arranged outside the processing box.

[0013] Preferably, the erection component includes a first fixed platform fixedly installed on the bearing plate. A support abutting disc is fixedly installed on the first fixed platform, and an inner support rod is fixedly installed on the support abutting disc. The inner cylinder of the roller brush is sleeved on the inner support rod, and a fixing mechanism is installed on the inner support rod.

[0014] Preferably, the fixing mechanism includes a liquid extrusion ring slidably installed inside the inner support rod, and hydraulic oil is filled between the inner wall of the inner support rod and the liquid extrusion ring. A hydraulic push rod is fixedly installed inside the inner support rod, and the liquid extrusion ring is fixedly installed on the driving end of the hydraulic push rod. A plurality of support abutting plates are fixedly installed on the inner support rod through a plurality of elastic telescopic rods, and a piston pushing part is fixedly communicated between each support abutting plate and the inner support rod.

[0015] Preferably, the sealing and pushing component includes a support disc fixedly installed on the support abutting disc. A plurality of compression springs are fixedly installed on the support disc, and a sealing ring is fixedly installed on the plurality of compression springs together. The inner ring of the sealing ring is attached to the outer wall of the inner cylinder of the roller brush, and the inner wall of the outer cylinder of the roller brush is sleeved outside the sealing ring.

[0016] Preferably, the extrusion component includes a servo motor fixedly installed at the bottom of the processing box. A driving roller is fixedly installed on the driving end of the servo motor. A second fixed platform is fixedly installed on the bearing plate, and a pushing disc is fixedly installed on the second fixed platform through a telescopic column. A pushing mechanism is installed between the pushing disc and the driving roller. A positioning plate cooperating with the outer cylinder of the roller brush is fixedly installed on the pushing disc through a plurality of extrusion spring rods.

[0017] Preferably, the pushing mechanism includes a threaded rod fixedly installed on the driving roller, a threaded limiting plate is installed on the threaded rod in a threaded fit manner, a traction rod is slidably installed between the threaded limiting plate and the bearing plate, and the pushing disc is fixedly installed at the upper end of the traction rod.

[0018] Preferably, the liquid injection assembly includes a liquid storage tank fixedly installed in the processing box, hot melt adhesive is stored in the liquid storage tank, a liquid pushing plate for squeezing liquid is slidably installed in the liquid storage tank, a linkage mechanism is installed between the liquid pushing plate and the traction rod, and a heating grid plate for heating the hot melt adhesive is fixedly installed in the liquid storage tank;

[0019] A sealing liquid injection ring is fixedly installed on the positioning plate, and the size of the sealing liquid injection ring is the same as that of the sealing ring. An elastic liquid guide pipe is fixedly communicated between the sealing liquid injection ring and the liquid storage tank, and a liquid supplement pipe for supplementing the hot melt adhesive is fixedly communicated with the liquid storage tank.

[0020] Preferably, the linkage mechanism includes a linkage rod slidably installed between the liquid storage tank and the liquid pushing plate, an electromagnetic clamping column is fixedly installed on the traction rod, an electromagnetic clamping part is fixedly installed on the linkage rod, and the electromagnetic clamping part is clamped with the electromagnetic clamping column.

[0021] Preferably, the internal and external cylinder hot melt connection method for processing the fiber brush of a floor sweeping robot is used for the above-mentioned internal and external cylinder hot melt connection device for processing the fiber brush of a floor sweeping robot, and includes the following steps:

[0022] S1. Sleeve the inner cylinder of the brush onto the positioning unit and position it through the erection assembly;

[0023] S2. Sleeve the outer cylinder of the brush onto the outside of the inner cylinder of the brush, and control the distance between the outer cylinder of the brush and the inner cylinder of the brush through the sealing ring in the sealing and pushing assembly;

[0024] S3. Start the extrusion assembly in the hot melt connection unit to perform secondary positioning on the outer cylinder of the brush;

[0025] S4. Start the liquid injection assembly to heat the hot melt adhesive and inject it through multiple liquid injection holes on the sealing liquid injection ring between the outer cylinder of the brush and the inner cylinder of the brush. Wait for the hot melt adhesive to cool and solidify to complete the hot melt connection.

[0026] The present invention provides an internal and external cylinder hot melt connection device and method for processing the fiber brush of a floor sweeping robot. It has the following beneficial effects:

[0027] 1. When the internal and external cylinders are connected by this hot melt connection device, after the internal and external cylinders are positioned, through the cooperation of the liquid injection assembly, the hot melt adhesive is directly injected into the gap between the inner cylinder of the brush and the outer cylinder of the brush after heating, without pre-applying the hot melt adhesive on the inner cylinder of the brush in advance, and the installation of the outer cylinder of the brush will not have a negative impact on the hot melt fixation.

[0028] 2. When the hot melt connection device connects the inner and outer cylinders, when injecting hot melt adhesive, it can automatically push the sealing ring to move as the injection amount of the hot melt adhesive increases, so that the hot melt adhesive is completely filled between the inner cylinder of the roller brush and the outer cylinder of the roller brush, without injection gaps and dead corners, and can achieve saturated injection and fixation between the inner cylinder of the roller brush and the outer cylinder of the roller brush, with better connection effect.

[0029] 3. When the hot melt connection device connects the inner and outer cylinders, through the cooperation of the extrusion component and the liquid injection component, it can not only achieve the extrusion positioning of the outer cylinder of the roller brush, improve the stability of the hot melt connection, but also inject the hot melt adhesive synchronously after the positioning is completed, effectively improving the efficiency of connection and fixation.

[0030] In summary, the present invention adopts a connection method of first performing preliminary positioning of the outer cylinder and the inner cylinder of the roller brush, and then directly injecting adhesive into the gap between the two, which can completely fill the hot melt adhesive between the outer cylinder of the roller brush and the inner cylinder of the roller brush, without connection gaps and dead corners, effectively avoiding the situation that the sealant is scraped off due to applying adhesive first and then installing, and effectively improving the connection comprehensiveness and stability of the inner and outer cylinders of the fiber roller brush.

[0031] Other features and advantages of the present invention will be described in the following specification, and part of them will become obvious from the specification, or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the written specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following further describes in detail the specific embodiments of the present invention with reference to the drawings, where:

[0033] Figure 1 is a schematic structural diagram of the hot melt connection device for the inner and outer cylinders in the processing of the fiber roller brush of the floor sweeping robot proposed by the present invention;

[0034] Figure 2 is Figure 1 a schematic structural diagram of the processing box after the lifting and opening door is opened in ;

[0035] Figure 3 is Figure 1 a schematic structural diagram of the interior of the processing box in ;

[0036] Figure 4 is Figure 3 a schematic structural diagram after removing the processing box;

[0037] Figure 5 is Figure 4 a schematic structural diagram between the outer cylinder of the roller brush and the first fixing table in ;

[0038] Figure 6 is Figure 5Schematic diagram of the structural decomposition of the middle roller brush outer cylinder and the support and pressing plate;

[0039] Figure 7 For Figure 6 Schematic diagram of the upper structure of the middle inner support rod;

[0040] Figure 8 For Figure 7 Schematic diagram of the structural decomposition of the inside of the middle inner support rod;

[0041] Figure 9 For Figure 4 Schematic diagram of the structure of the middle servo motor and the push plate;

[0042] Figure 10 For Figure 9 Schematic diagram of the structure after rotating a certain angle;

[0043] Figure 11 For Figure 9 Schematic diagram of the structure of the middle servo motor and the positioning plate;

[0044] Figure 12 For Figure 10 Schematic diagram of the structure of the middle servo motor and the liquid storage tank;

[0045] Figure 13 For Figure 12 Schematic diagram of the internal structure of the middle liquid storage tank;

[0046] Figure 14 For Figure 13 Schematic diagram of the structural decomposition of the towing rod and the linkage rod;

[0047] Figure 15 Front view of the structure when the roller brush outer cylinder and the roller brush inner cylinder of the present invention are hot-melt injected with glue.

[0048] In the figure: 1 processing box, 2 lifting and opening door, 3 heat dissipation pipe, 4 liquid supplement pipe, 5 roller brush outer cylinder, 6 first fixed table, 7 liquid storage tank, 8 servo motor, 9 bearing plate, 10 support and pressing plate, 11 push plate, 12 roller brush inner cylinder, 13 support plate, 14 sealing ring, 15 inner support rod, 16 support and pressing plate, 17 piston pushing member, 18 compression spring, 19 hydraulic pushing rod, 20 liquid squeezing ring, 21 threaded rod, 22 threaded limit plate, 23 positioning plate, 24 extrusion spring rod, 25 elastic liquid guide pipe, 26 sealing liquid injection ring, 27 liquid injection hole, 28 towing rod, 29 driving roller, 30 liquid pushing plate, 31 heating grid plate, 32 linkage rod, 33 electromagnetic engaging column, 34 electromagnetic engaging member, 35 second fixed table, 36 telescopic column. Detailed implementation manners

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0050] Embodiment 1: Refer to Figures 1 - 3 , a hot melt connection device for the inner and outer cylinders in the processing of a fiber roller brush of a floor sweeping robot, including a processing box 1, a roller brush outer cylinder 5 and a roller brush inner cylinder 12 for forming the roller brush cylinder of the floor sweeping robot. A hot melt adhesive is filled between the roller brush outer cylinder 5 and the roller brush inner cylinder 12. After the hot melt adhesive cools and solidifies, the connection and fixation between the roller brush inner cylinder 12 and the roller brush outer cylinder 5 are completed.

[0051] This inner and outer cylinder hot melt connection device further includes:

[0052] A bearing plate 9 is arranged in the processing box 1. The bearing plate 9 is used to separate the internal area of the processing box 1, so that the hot melt connection area of the roller brush outer cylinder 5 and the roller brush inner cylinder 12 is an independent area and will not be interfered by other components inside the processing box 1;

[0053] A positioning unit is arranged on the bearing plate 9. The positioning unit is used to initially position the roller brush inner cylinder 12 to keep it stable during hot melt connection. At the same time, the initial positioning between the roller brush inner cylinder 12 and the roller brush outer cylinder 5 is completed, the initial position of the roller brush outer cylinder 5 is limited, and a gap for filling the hot melt adhesive between the roller brush outer cylinder 5 and the roller brush inner cylinder 12 is reserved.

[0054] A hot melt connection unit is arranged in the processing box 1, which is used to complete the secondary fixation of the roller brush outer cylinder 5, ensure the stability of the hot melt connection process, and automatically inject the hot melt adhesive into the gap between the roller brush outer cylinder 5 and the roller brush inner cylinder 12, and control the injection amount of the hot melt adhesive to ensure that there is no filling dead angle in the gap between the roller brush outer cylinder 5 and the roller brush inner cylinder 12, effectively improving the stability of the connection and fixation.

[0055] A lifting opening and closing door 2 is slidably installed outside the processing box 1, and an observation window is arranged on the lifting opening and closing door 2. The installation and hot melt connection conditions of the roller brush outer cylinder 5 and the roller brush inner cylinder 12 can be observed through the observation window, which is convenient for real-time adjustment. The lifting opening and closing door 2 is used to seal the processing box 1 and facilitate the placement and removal of the roller brush inner cylinder 12 and the roller brush outer cylinder 5;

[0056] A plurality of heat dissipation pipes 3 for heat dissipation and ventilation are arranged outside the processing box 1. The heat dissipation efficiency of the roller brush outer cylinder 5 and the roller brush inner cylinder 12 in the processing box 1 is improved through the heat dissipation pipes 3. A temperature sensor is arranged in the processing box 1, and the temperature sensor is used to monitor the temperature of the roller brush outer cylinder 5 and the roller brush inner cylinder 12 in real time, so as to facilitate judging whether the hot melt adhesive in the roller brush outer cylinder 5 and the roller brush inner cylinder 12 has completely cooled and solidified.

[0057] Embodiment 2: Refer toFigures 2 - 8 and Figure 15 In this embodiment, the different technical solution compared with the first embodiment is that the positioning unit includes an erection component and a sealing and pushing component. A plurality of support and abutment plates 16 for positioning the inner cylinder 12 of the rolling brush are arranged in the erection component, and a sealing ring 14 is arranged in the sealing and pushing component. The support of the sealing ring 14 realizes the support and hot melt sealing between the inner cylinder 12 of the rolling brush and the outer cylinder 5 of the rolling brush;

[0058] The erection component includes a first fixing table 6 fixedly installed on the bearing plate 9. A support and abutment disc 10 is fixedly installed on the first fixing table 6. An inner support rod 15 is fixedly installed on the support and abutment disc 10, and the inner cylinder 12 of the rolling brush is sleeved on the inner support rod 15. When performing the hot melt connection between the inner cylinder 12 of the rolling brush and the outer cylinder 5 of the rolling brush, first open the lifting and opening door 2, and then sleeve the inner cylinder 12 of the rolling brush onto the inner support rod 15 for preliminary positioning;

[0059] A fixing mechanism is installed on the inner support rod 15. The fixing mechanism includes a liquid squeezing ring 20 slidably installed inside the inner support rod 15, and hydraulic oil is filled between the inner wall of the inner support rod 15 and the liquid squeezing ring 20. A hydraulic pushing rod 19 is fixedly installed inside the inner support rod 15, and the liquid squeezing ring 20 is fixedly installed on the driving end of the hydraulic pushing rod 19. A plurality of support and abutment plates 16 are fixedly installed on the inner support rod 15 through a plurality of elastic telescopic rods, and a piston pushing member 17 is fixedly communicated between each support and abutment plate 16 and the inner support rod 15;

[0060] After the inner cylinder 12 of the rolling brush is sleeved, start the hydraulic pushing rod 19 to drive the liquid squeezing ring 20 to move. When the liquid squeezing ring 20 moves, it will squeeze the hydraulic oil inside the inner support rod 15 to pour into a plurality of piston pushing members 17. When the hydraulic oil in the piston pushing members 17 increases, its end will be pushed out, which will push the corresponding support and abutment plate 16 to move. Thus, a plurality of support and abutment plates 16 can be simultaneously pushed out to closely fit the inner wall of the inner cylinder 12 of the rolling brush, and the tight fixing of the inner cylinder 12 of the rolling brush can be completed, so that it remains stable during the fusion fixing;

[0061] The plurality of elastic telescopic rods play a role in resetting. After the hot melt fixing of the inner cylinder 12 of the rolling brush is completed, drive the liquid squeezing ring 20 to move in the reverse direction to reset through the hydraulic pushing rod 19, and the hydraulic oil in a plurality of piston pushing members 17 can be sucked back into the liquid squeezing ring 20. At this time, the pressure on the plurality of elastic telescopic rods is reduced, and they will automatically contract, thereby driving the support and abutment plate 16 to reset, separating the support and abutment plate 16 from the inner wall of the inner cylinder 12 of the rolling brush, releasing the positioning of the inner cylinder 12 of the rolling brush. At this time, the inner cylinder 12 of the rolling brush can be directly disassembled and taken out.

[0062] In a further embodiment, the sealing and pushing assembly includes a support disk 13 fixedly mounted on the support and abutting disk 10. A plurality of compression springs 18 are fixedly mounted on the support disk 13, and a sealing ring 14 is fixedly mounted on the plurality of compression springs 18. The inner ring of the sealing ring 14 is in contact with the outer wall of the inner roller brush cylinder 12, and the inner wall of the outer roller brush cylinder 5 is sleeved outside the sealing ring 14;

[0063] After the inner roller brush cylinder 12 is positioned, at this time, the sealing ring 14 is at the left end of the inner roller brush cylinder 12 under the pushing action of the plurality of compression springs 18 (the state shown in the attached drawings of the specification) Figure 15 At the same time, the inner ring wall of the sealing ring 14 is in contact with the outer wall of the inner roller brush cylinder 12. At this time, the entire outer roller brush cylinder 5 is sleeved outside the inner roller brush cylinder 12, and the inner wall of the outer roller brush cylinder 5 is in contact with the outer ring of the sealing ring 14 to complete the preliminary positioning of the outer roller brush cylinder 5;

[0064] At this time, the sealing ring 14 is exactly between the inner roller brush cylinder 12 and the outer roller brush cylinder 5, and the annular shape of the sealing ring 14 is the same as the gap between the inner roller brush cylinder 12 and the outer roller brush cylinder 5. When the hot melt adhesive is injected into the gap between the inner roller brush cylinder 12 and the outer roller brush cylinder 5 from the left, the hot melt adhesive will be blocked by the sealing ring 14 and will not flow to the right side of the sealing ring 14, thus completing the sealing of the gap between the inner roller brush cylinder 12 and the outer roller brush cylinder 5.

[0065] The sealing ring 14, the plurality of compression springs 18 and the support disk 13 as a whole are detachably arranged. In actual use, different sizes of sealing rings 14 can be flexibly selected according to the sizes of the inner roller brush cylinder 12 and the outer roller brush cylinder 5 to be hot melt connected, so that the sealing ring 14 can be adapted to different sizes of the inner roller brush cylinder 12 and the outer roller brush cylinder 5, thereby improving the overall application range of the device.

[0066] Embodiment Three: Refer to Figures 2 - 4 and Figures 9 - 15 , the different technical solution of this embodiment compared with Embodiment Two is that the hot melt connection unit includes an extrusion assembly and a liquid injection assembly. Among them, a sealing liquid injection ring 26 is arranged in the extrusion assembly, and a plurality of liquid injection holes 27 for injecting hot melt adhesive are arranged on the sealing liquid injection ring 26. The liquid injection assembly is used to inject a fixed amount of hot melt adhesive into the gap between the inner roller brush cylinder 12 and the inner roller brush cylinder 12 through the liquid injection holes 27 and cooperate with the sealing ring 14 to achieve a full-sealed injection of the hot melt adhesive;

[0067] The extrusion assembly includes a servo motor 8 fixedly mounted on the bottom of the processing box 1. A driving roller 29 is fixedly mounted on the driving end of the servo motor 8. A second fixed table 35 is fixedly mounted on the bearing plate 9, and a pushing disk 11 is fixedly mounted on the second fixed table 35 through a telescopic column 36. The pushing disk 11 is fixedly connected to the second fixed table 35 through the telescopic column 36, so that the pushing disk 11 can only move in the horizontal direction and will not deviate in other directions.

[0068] A pushing mechanism is installed between the pushing plate 11 and the driving roller 29. The pushing mechanism includes a threaded rod 21 fixedly installed on the driving roller 29. A threaded limit plate 22 is installed in threaded fit on the threaded rod 21. A traction rod 28 is slidably installed between the threaded limit plate 22 and the bearing plate 9. And the pushing plate 11 is fixedly installed at the upper end of the traction rod 28.

[0069] When the servo motor 8 is started, it will drive the driving roller 29 on its driving end to rotate. The rotation of the driving roller 29 will drive the threaded rod 21 to rotate. When the servo motor 8 drives the driving roller 29 to rotate forward, that is, it will drive the threaded rod 21 to rotate forward. The threaded limit plate 22 is threadedly connected to the threaded rod 21, and the threaded limit plate 22 can only move horizontally under the limiting action of the bearing plate 9. When the threaded rod 21 rotates forward, it will drive the threaded limit plate 22 to move rightward (in the direction shown in the attached instruction manual), and when the threaded limit plate 22 moves rightward, it will drive the traction rod 28 to move rightward. Figure 9 Shown direction), when the threaded limit plate 22 moves rightward, it will drive the traction rod 28 to move rightward.

[0070] On the contrary, when the servo motor 8 drives the threaded rod 21 to rotate reversely, it will drive the threaded limit plate 22 to move leftward reversely, and then drive the traction rod 28 to move leftward reversely.

[0071] In a further embodiment, a positioning plate 23 that cooperates with the outer cylinder 5 of the brush roller is fixedly installed on the pushing plate 11 through a plurality of extrusion spring rods 24. When the traction rod 28 moves rightward, it will drive the pushing plate 11 to move rightward. When the pushing plate 11 moves rightward until the positioning plate 23 on it presses against the outer wall of the brush roller outer cylinder 5, at this time, when the traction rod 28 continues to move rightward to drive the pushing plate 11 to move rightward, the positioning plate 23 will be blocked by the brush roller outer cylinder 5 and cannot continue to move.

[0072] When the pushing plate 11 moves, it will squeeze a plurality of extrusion spring rods 24 to compress them, and through the reset action of the plurality of extrusion spring rods 24, pressure is applied to the positioning plate 23 and the brush roller outer cylinder 5, so that the brush roller outer cylinder 5 is firmly clamped between the support and pressing plate 10 and the positioning plate 23, completing the secondary positioning of the brush roller outer cylinder 5, and further improving the stability of the hot melt connection process between the brush roller outer cylinder 5 and the brush roller inner cylinder 12.

[0073] In a further embodiment, the liquid injection assembly includes a liquid storage tank 7 fixedly installed in the processing box 1. The liquid storage tank 7 stores hot melt adhesive. A liquid pushing plate 30 for squeezing liquid is slidably installed in the liquid storage tank 7. The liquid storage tank 7 is fixedly communicated with a liquid replenishing pipe 4 for replenishing hot melt adhesive, and the hot melt adhesive in the liquid storage tank 7 is automatically replenished through the liquid replenishing pipe 4.

[0074] A linkage mechanism is installed between the liquid pushing plate 30 and the towing rod 28. The linkage mechanism includes a linkage rod 32 slidably installed between the liquid storage tank 7 and the liquid pushing plate 30. An electromagnetic engaging column 33 is fixedly installed on the towing rod 28, and an electromagnetic engaging part 34 is fixedly installed on the linkage rod 32, and the electromagnetic engaging part 34 is engaged with the electromagnetic engaging column 33;

[0075] When the positioning plate 23 presses against the outer cylinder 5 of the roller brush and cannot move, at this time, when the servo motor 8 drives the threaded rod 21 to continue to rotate forward, it will drive the threaded limit plate 22 to continue to move to the right. The rightward movement of the threaded limit plate 22 will drive the towing rod 28 to move to the right. When the towing rod 28 moves to the right, it will drive the electromagnetic engaging column 33 thereon to move, and during the movement, the electromagnetic engaging column 33 will gradually engage into the electromagnetic engaging part 34 inside the linkage rod 32;

[0076] After the electromagnetic engaging column 33 is engaged into the electromagnetic engaging part 34, at this time, the electromagnetic engaging column 33 and the electromagnetic engaging part 34 will be started synchronously, so that the electromagnetic engaging column 33 and the electromagnetic engaging part 34 generate magnetic suction force and are tightly adsorbed and fixed, making the electromagnetic engaging column 33 and the electromagnetic engaging part 34 magnetically adsorbed into a whole. At this time, when the electromagnetic engaging column 33 moves, it will drive the electromagnetic engaging part 34 to move synchronously;

[0077] After the electromagnetic engaging column 33 and the electromagnetic engaging part 34 are fixed, they will continue to move to the right under the action of the towing rod 28. At this time, when the electromagnetic engaging column 33 drives the electromagnetic engaging part 34 to move, it will drive the linkage rod 32 to move. When the linkage rod 32 moves, it will drive the liquid pushing plate 30 to move it inside the liquid storage tank 7.

[0078] In a further embodiment, a sealed liquid injection ring 26 is fixedly installed on the positioning plate 23, and the size of the sealed liquid injection ring 26 is the same as that of the sealing ring 14. An elastic liquid guide pipe 25 is fixedly connected between the sealed liquid injection ring 26 and the liquid storage tank 7. A heating grid plate 31 for heating hot melt adhesive is fixedly installed inside the liquid storage tank 7;

[0079] The sealed liquid injection ring 26 moves synchronously with the movement of the positioning plate 23. When the positioning plate 23 moves to be pressed and fitted against the outer cylinder 5 of the roller brush, at this time, the sealed liquid injection ring 26 will be synchronously engaged into the gap between the outer cylinder 5 of the roller brush and the inner cylinder 12 of the roller brush, forming the same state as the sealing ring 14. And at this time, the sealed liquid injection ring 26 is on the left side of the sealing ring 14 (as shown in the attached instruction Figure 15 ), the sealed liquid injection ring 26 and the sealing ring 14 cooperate with each other, and the two ends of the gap between the outer cylinder 5 of the roller brush and the inner cylinder 12 of the roller brush can be synchronously sealed, so that a closed space is formed between the sealed liquid injection ring 26, the sealing ring 14 and the outer cylinder 5 of the roller brush and the inner cylinder 12 of the roller brush.

[0080] When the liquid pushing plate 30 moves, it will squeeze the hot melt adhesive in the liquid storage tank 7. At the same time, the heating grid plate 31 in the liquid storage tank 7 will start to heat the hot melt adhesive in the liquid storage tank 7. When the liquid pushing plate 30 squeezes the hot melt adhesive, it will press the hot melt adhesive into the sealing liquid injection ring 26 through the elastic liquid guide tube 25;

[0081] The hot melt adhesive in the sealing liquid injection ring 26 will be directly injected into the gap between the outer roller brush cylinder 5 and the inner roller brush cylinder 12 through multiple liquid injection holes 27 on it. As the injection amount of the hot melt adhesive increases, it will gradually push the sealing ring 14 to move it to the right (the direction shown in the attached instruction manual Figure 15 ). When the sealing ring 14 moves to the rightmost end and cannot move anymore, the full filling of the hot melt adhesive is completed. After waiting for a period of time for the hot melt adhesive to cool and solidify, the hot melt connection and fixation between the outer roller brush cylinder 5 and the inner roller brush cylinder 12 are completed.

[0082] Since the space between the sealing ring 14 and the sealing liquid injection ring 26 is a closed space, when the hot melt adhesive is injected into the gap between the two, the hot melt adhesive will only push the sealing ring 14 to move to the right after completely filling the gap between the two. When the hot melt adhesive is not full and continues to be injected, it will only fill the gap first, and will not push the sealing ring 14 to move under the premise of existing gaps, so that when the sealing ring 14 moves, the space between it and the sealing liquid injection ring 26 is always filled with hot melt adhesive.

[0083] Through the continuous injection of multiple annularly arranged liquid injection holes 27 on the sealing liquid injection ring 26, the gap between the outer roller brush cylinder 5 and the inner roller brush cylinder 12 will not have gaps or dead corners, so that the outer roller brush cylinder 5 and the inner roller brush cylinder 12 are completely connected and fixed by the hot melt adhesive, the connection and fixation stability is higher, the filling of the hot melt adhesive is more saturated, and the connection effect is better.

[0084] The working principle of this hot melt connection device is:

[0085] First, open the lifting and opening door 2, then sleeved the inner roller brush cylinder 12 onto the inner support rod 15 for preliminary positioning. Start the hydraulic push rod 19 to drive the liquid squeezing ring 20 to move. The liquid squeezing ring 20 moves to squeeze the hydraulic oil in the inner support rod 15 so that it fills into multiple piston push members 17. When the hydraulic oil in the piston push members 17 increases, it will push the corresponding support and pressing plate 16 to move, and then the multiple support and pressing plates 16 can be pushed out simultaneously to closely fit with the inner wall of the inner roller brush cylinder 12, completing the tight fixation of the inner roller brush cylinder 12;

[0086] After the inner roller brush cylinder 12 is positioned, the outer roller brush cylinder 5 is integrally sleeved outside the inner roller brush cylinder 12, and the inner wall of the outer roller brush cylinder 5 is made to fit with the outer ring of the sealing ring 14 to complete the preliminary positioning of the outer roller brush cylinder 5.

[0087] When the servo motor 8 starts, it drives the driving roller 29 on its driving end to rotate. The rotation of the driving roller 29 drives the threaded rod 21 to rotate forward. The forward rotation of the threaded rod 21 drives the threaded limit plate 22 and the traction rod 28 to move rightward. The rightward movement of the traction rod 28 drives the pushing plate 11 to move rightward. When the pushing plate 11 moves rightward until the positioning plate 23 on it presses against the outer wall of the brush roller outer cylinder 5 and cannot move, at this time, the positioning plate 23 cooperates with the supporting abutting plate 10 to firmly clamp the brush roller outer cylinder 5 between the supporting abutting plate 10 and the positioning plate 23, completing the secondary positioning of the brush roller outer cylinder 5.

[0088] The sealed liquid injection ring 26 moves synchronously with the movement of the positioning plate 23. When the positioning plate 23 moves to press against and fit with the brush roller outer cylinder 5, at this time, the sealed liquid injection ring 26 will synchronously snap into the gap between the brush roller outer cylinder 5 and the brush roller inner cylinder 12, so that a sealed space is formed between the sealed liquid injection ring 26, the sealing ring 14, the brush roller outer cylinder 5, and the brush roller inner cylinder 12.

[0089] When the positioning plate 23 presses against the brush roller outer cylinder 5 and cannot move, the servo motor 8 drives the threaded rod 21 to continue to rotate forward, driving the threaded limit plate 22 to continue to move rightward. The rightward movement of the threaded limit plate 22 drives the traction rod 28 to move rightward, and through the cooperation of the linkage mechanism, drives the linkage rod 32 to move rightward. The movement of the linkage rod 32 drives the liquid pushing plate 30 to move in the liquid storage tank 7;

[0090] When the liquid pushing plate 30 moves, it will squeeze the hot melt adhesive in the liquid storage tank 7. At the same time, the heating grid plate 31 will start to heat the hot melt adhesive in the liquid storage tank 7. The liquid pushing plate 30 squeezes the hot melt adhesive, which will press it into the sealed liquid injection ring 26 through the elastic liquid guide tube 25. The hot melt adhesive in the sealed liquid injection ring 26 will be directly injected into the gap between the brush roller outer cylinder 5 and the brush roller inner cylinder 12 through multiple liquid injection holes 27 on it. As the injection amount of the hot melt adhesive increases, it will gradually push the sealing ring 14 to move rightward until the sealing ring 14 moves to the rightmost end and cannot move, which means the complete filling of the hot melt adhesive. After waiting for a period of time for the hot melt adhesive to cool and solidify, the hot melt connection and fixation between the brush roller outer cylinder 5 and the brush roller inner cylinder 12 are completed.

[0091] The embodiment of the present invention also provides a method for hot melt connection between the inner and outer cylinders of a fiber brush roller for a floor sweeping robot, which is used for the device for hot melt connection between the inner and outer cylinders of a fiber brush roller for a floor sweeping robot, and includes the following steps:

[0092] S1. Set the brush roller inner cylinder 12 into the positioning unit and position it through the erection component;

[0093] S2. Set the brush roller outer cylinder 5 outside the brush roller inner cylinder 12 and control the distance between the brush roller outer cylinder 5 and the brush roller inner cylinder 12 through the sealing ring 14 in the sealed pushing component;

[0094] S3. Start the extrusion assembly in the hot melt connection unit to perform secondary positioning on the outer cylinder 5 of the roller brush;

[0095] S4. Start the liquid injection assembly to heat the hot melt adhesive and inject it through multiple liquid injection holes 27 on the sealed liquid injection ring 26 between the outer cylinder 5 of the roller brush and the inner cylinder 12 of the roller brush. Wait for the hot melt adhesive to cool and solidify to complete the hot melt connection.

[0096] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes should be covered within the protection scope of the present invention.

Claims

1. Internal and external cylinder hot melt connection device for processing the fiber roller brush of a floor sweeping robot, comprising a processing box (1) and a roller brush outer cylinder (5) and a roller brush inner cylinder (12) used to form the fiber roller brush cylinder of the floor sweeping robot, characterized in that, It further includes: a carrier plate (9) disposed inside the processing box (1); a positioning unit disposed on the carrier plate (9), including an erection component and a sealing and pushing component. Multiple support abutment plates (16) for positioning the inner roller brush cylinder (12) are provided inside the erection component, and a sealing ring (14) is provided inside the sealing and pushing component. The support between the inner roller brush cylinder (12) and the outer roller brush cylinder (5) and the hot melt sealing are realized through the support of the sealing ring (14); The erection component includes a first fixed platform (6) fixedly installed on the carrier plate (9), and a support abutment disk (10) is fixedly installed on the first fixed platform (6); The sealing and pushing component includes a support disk (13) fixedly installed on the support abutment disk (10). A plurality of compression springs (18) are fixedly installed on the support disk (13), and a sealing ring (14) is fixedly installed on the plurality of compression springs (18). The inner ring of the sealing ring (14) is in contact with the outer wall of the inner roller brush cylinder (12), and the inner wall of the outer roller brush cylinder (5) is sleeved outside the sealing ring (14); a hot melt connection unit disposed inside the processing box (1), including an extrusion component and a liquid injection component. A sealing liquid injection ring (26) is provided inside the extrusion component, and a plurality of liquid injection holes (27) for injecting hot melt adhesive are provided on the sealing liquid injection ring (26). The liquid injection component is used to inject a fixed amount of hot melt adhesive through the liquid injection holes (27) between the inner roller brush cylinder (12) and the outer roller brush cylinder (5), and cooperate with the sealing ring (14) to realize the full-sealing injection of the hot melt adhesive; The extrusion component includes a servo motor (8) fixedly installed at the bottom of the processing box (1). A driving roller (29) is fixedly installed on the driving end of the servo motor (8). A second fixed platform (35) is fixedly installed on the carrier plate (9), and a pushing disk (11) is fixedly installed on the second fixed platform (35) through a telescopic column (36). A pushing mechanism is installed between the pushing disk (11) and the driving roller (29). A positioning plate (23) cooperating with the outer roller brush cylinder (5) is fixedly installed on the pushing disk (11) through a plurality of extrusion spring rods (24).

2. The inner and outer cylinder hot melt connection device for processing the fiber roller brush of the floor sweeping robot according to claim 1, characterized in that, A lifting opening and closing door (2) is slidably installed outside the processing box (1), and an observation window is provided on the lifting opening and closing door (2). The lifting opening and closing door (2) is used to seal the processing box (1) and facilitate the placement and removal of the inner roller brush cylinder (12) and the outer roller brush cylinder (5); A plurality of heat dissipation pipes (3) for heat dissipation and ventilation are provided outside the processing box (1); 3. The inner and outer cylinder hot melt connection device for processing the fiber roller brush of the floor sweeping robot according to claim 1, characterized in that, An inner support rod (15) is fixedly installed on the support abutment disk (10), and the inner roller brush cylinder (12) is sleeved on the inner support rod (15). A fixing mechanism is installed on the inner support rod (15); 4. The internal and external cylinder hot melt connection device for processing the fiber roller brush of the floor sweeping robot according to claim 3, characterized in that, The fixing mechanism includes a liquid extrusion ring (20) slidably installed in the inner support rod (15), and hydraulic oil is filled between the inner wall of the inner support rod (15) and the liquid extrusion ring (20). A hydraulic push rod (19) is fixedly installed in the inner support rod (15), and the liquid extrusion ring (20) is fixedly installed on the driving end of the hydraulic push rod (19). A plurality of support abutting plates (16) are fixedly installed on the inner support rod (15) through a plurality of elastic telescopic rods, and a piston pushing member (17) is fixedly communicated between each support abutting plate (16) and the inner support rod (15).

5. The inner and outer cylinder hot melt connection device for processing the fiber roller brush of the floor sweeping robot according to claim 4, characterized in that, The pushing mechanism includes a threaded rod (21) fixedly installed on the driving roller (29). A threaded limit plate (22) is installed in threaded cooperation with the threaded rod (21), and a traction rod (28) is slidably installed between the threaded limit plate (22) and the bearing plate (9). The pushing disc (11) is fixedly installed at the upper end of the traction rod (28).

6. The inner and outer cylinder hot melt connection device for the fiber roller brush processing of the floor sweeping robot according to claim 5, characterized in that, The liquid injection assembly includes a liquid storage tank (7) fixedly installed in the processing tank (1), and hot melt adhesive is stored in the liquid storage tank (7). A liquid pushing plate (30) for extruding liquid is slidably installed in the liquid storage tank (7), and a linkage mechanism is installed between the liquid pushing plate (30) and the traction rod (28). A heating mesh plate (31) for heating the hot melt adhesive is fixedly installed in the liquid storage tank (7). A sealing liquid injection ring (26) is fixedly installed on the positioning plate (23), and the size of the sealing liquid injection ring (26) is the same as that of the sealing ring (14). An elastic liquid guide pipe (25) is fixedly communicated between the sealing liquid injection ring (26) and the liquid storage tank (7). A liquid supplement pipe (4) for supplementing hot melt adhesive is fixedly communicated with the liquid storage tank (7).

7. The inner and outer cylinder hot melt connection device for the fiber roller brush processing of the floor sweeping robot according to claim 6, wherein, The linkage mechanism includes a linkage rod (32) slidably installed between the liquid storage tank (7) and the liquid pushing plate (30). An electromagnetic clamping column (33) is fixedly installed on the traction rod (28). An electromagnetic clamping member (34) is fixedly installed on the linkage rod (32), and the electromagnetic clamping member (34) is clamped with the electromagnetic clamping column (33).

8. A method for thermally fusing the inner and outer cylinders for processing the fiber roller brush of a floor cleaning robot, which is used for the device for thermally fusing the inner and outer cylinders for processing the fiber roller brush of a floor cleaning robot according to any one of claims 1-7, characterized in that, Comprising the following steps: S1. Sleeve the brush inner cylinder (12) into the positioning unit and position it through the erection assembly; S2. Sleeve the brush outer cylinder (5) outside the brush inner cylinder (12), and control the distance between the brush outer cylinder (5) and the brush inner cylinder (12) through the sealing ring (14) in the sealing pushing assembly; S3. Start the extrusion assembly in the hot melt connection unit to perform secondary positioning on the brush outer cylinder (5); S4. Start the liquid injection assembly to heat the hot melt adhesive and inject it through a plurality of liquid injection holes (27) on the sealing liquid injection ring (26) between the brush outer cylinder (5) and the brush inner cylinder (12). Wait for the hot melt adhesive to cool and solidify to complete the hot melt connection.

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