PU foam removing device

Abstract

The utility model discloses a PU foam removing device which comprises a separating box, a driving device, a feeding mechanism and a conveying belt, the feeding mechanism and the conveying belt are arranged in the separating box, a collecting assembly is arranged at the bottom of the separating box, the feeding mechanism is used for feeding EVA sheets into the separating box, a removing mechanism used for cleaning PU foam is arranged on the feeding mechanism, and the conveying belt is used for conveying the EVA sheets into the separating box. The driving device is in transmission connection with the feeding mechanism and the removing mechanism, the collecting assembly is used for collecting the PU foam, and the conveying belt is used for conveying the cleaned EVA sheets out of the separating box. According to the device, PU foam on the surface of the EVA sheet can be cleaned only by feeding the EVA sheet from one end of the device, manual cleaning is not needed, the cleaning efficiency can be greatly improved, the labor intensity and the cleaning cost can be reduced, and operation is easy.

Description

Technical Field

[0001] The present application relates to the technical field of foam removal, and in particular to a PU foam removal device. Background Art

[0002] Automotive interiors are often made of EVA, such as floor mats, seat backs, and door panel trims. EVA (ethylene vinyl acetate) is a commonly used thermoplastic. Recycling it effectively conserves this resource and reduces waste. This process typically involves collection, sorting, cleaning, crushing, and recycling to achieve economic benefits. Before recycling, EVA sheets must be cleaned of surface impurities (such as PU foam (polyurethane foam)) and other non-EVA materials to ensure the quality and consistency of the recycled material and prevent filter clogging during subsequent filtration and extrusion.

[0003] At present, PU foam is generally removed from EVA sheets manually using tools; or the part with PU foam is manually cut off and the remaining part without PU foam is recycled. This will result in a large amount of EVA sheet waste and low utilization rate. The existing cleaning method requires a lot of manual cleaning, which is not only labor-intensive, but also has poor cleaning efficiency and effect, and high recycling costs. Utility Model Content

[0004] This application provides a PU foam removal device to address the deficiencies of the above-mentioned prior art, using the following technical solutions:

[0005] The PU foam removal device comprises a separation box, and a feeding mechanism and a conveyor belt arranged in the separation box, wherein the feeding mechanism is used to feed the EVA sheet into the separation box;

[0006] A removal mechanism is provided above the feeding mechanism for cleaning the PU foam, and the conveyor belt can transport the cleaned EVA sheet out of the separation box;

[0007] A collecting component, the collecting component is arranged at the bottom of the separation box, and the collecting component is used to collect the PU foam;

[0008] A driving device is respectively connected to the feeding mechanism and the removing mechanism.

[0009] Preferably, the removal mechanism includes a brush roller assembly and a flushing assembly. The flushing assembly is arranged on one side of the brush roller assembly and is used to provide a medium to flush the PU foam cleaned by the brush roller assembly into the collection assembly.

[0010] Preferably, the flushing assembly includes a nozzle and a supply device, and the supply device is connected to the nozzle and the collecting assembly respectively.

[0011] Preferably, it further comprises a filter, which is arranged between the collecting component and the supply device.

[0012] Preferably, the feeding mechanism includes at least two groups of feeding rollers and a support plate horizontally arranged between the feeding rollers, and the removal mechanism is arranged on the upper side of the support plate.

[0013] Preferably, the feeding roller includes a first driving roller and a second driving roller, a feeding gap is left between the first driving roller and the second driving roller, and a plurality of protrusions are provided on the outer surfaces of the first driving roller and the second driving roller.

[0014] Preferably, the protrusion is in a needle-like shape.

[0015] Preferably, at least one guide roller is further provided in the support plate, and the guide roller is rotatably connected to the support plate to guide the movement of the EVA sheet.

[0016] Preferably, the collecting assembly includes a filtering component and a liquid storage tank, and the filtering component is provided between the liquid storage tank and the feeding mechanism for collecting the PU foam.

[0017] Preferably, the filter component is slidably connected to the separation box and can move along the x-axis direction.

[0018] The beneficial effects of this application are:

[0019] The EVA sheet can be fed into the separation box through the feeding mechanism, and the removal mechanism cleans the PU foam from the surface of the EVA sheet. The cleaned EVA sheet is sent out of the separation box via the conveyor belt to enter the next process; the cleaning work can be completed by simply feeding the EVA sheet from the feed port, which can greatly improve the cleaning efficiency and reduce labor intensity and cleaning costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a simplified schematic diagram of the PU foam removal device of the present application;

[0021] Figure 2 It is a flow chart of the PU foam removal device of the present application;

[0022] Figure 3 This is a schematic diagram of the support plate structure of the PU foam removal device of the present application;

[0023] Figure 4 It is a structural diagram of the feeding mechanism of the PU foam removal device of the present application.

[0024] In the picture:

[0025] 1. Separation box, 2. Feeding mechanism, 20. Feeding gap, 21. First drive roller, 22. Second drive roller, 23. Protrusion, 3. Support plate, 4. Removal mechanism, 5. Conveyor belt, 6. Filter component, 7. Liquid storage tank, 8. Guide roller, 100. Feed end, 200. Discharge end. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described in this application are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] See Figures 1 to 4 , further explain this application:

[0028] Combine Figure 1 The PU foam removal device is used to remove PU foam (polyurethane foam) from the surface of an EVA sheet. The device comprises a separation box 1 and a driving device, as well as a feeding mechanism 2 and a conveyor belt 5 provided in the separation box 1. The conveyor belt 5 is closely attached to the rear end of the feeding mechanism 2. The separation box 1 is provided with a feeding end 100 and a discharging end 200. The feeding mechanism 2 is provided on one side of the feeding end 100 and is used to feed the EVA sheet into the separation box 1. The conveyor belt 5 is provided on one side of the discharging end 200 and is used to transport the EVA sheet out of the separation box 1. A collecting assembly is provided at the bottom of the separation box 1. The feeding mechanism 2 is provided with a removal mechanism 4 for cleaning PU foam. The collecting assembly is used to collect the PU foam cleaned by the removal mechanism 4. The driving device drives the feeding mechanism 2 and the removal mechanism 4 to rotate. The conveyor belt 5 then transports the cleaned EVA sheet out of the separation box 1. There is no need to manually use tools to clean the PU foam on the EVA sheet. The soaked EVA sheet only needs to be put into the feed end 100. The operation is simple, labor intensity can be reduced, cleaning efficiency can be improved, and recycling costs can be reduced.

[0029] In which, the power device is connected to the feeding mechanism 2 and the removal mechanism 4, and the driving device is a motor; a motor can be set to drive the removal mechanism 4 and the feeding mechanism 2 to rotate at the same time through gear transmission, chain transmission or belt transmission; or multiple motors can be set to independently drive the removal mechanism 4 and the feeding mechanism 2 respectively.

[0030] Combine Figure 1The feeding mechanism 2 is located on one side of the feed end 100. The feeding mechanism 2 includes a support plate 3 and at least one set of feed rollers located at both ends of the support plate 3. The removal mechanism 4 is located above the support plate 3. The feed rollers are capable of feeding the EVA sheet to be cleaned into the separation box 1. The support plate 3 is horizontally installed between the feed rollers. The feed rollers include a first drive roller 21 and a second drive roller 22. A feed gap 20 is left between the first drive roller 21 and the second drive roller 22. The outer surfaces of the first drive roller 21 and the second drive roller 22 are each provided with a plurality of protrusions 23. Of course, the protrusions 23 can also be provided on any of the drive rollers. The protrusions 23 are needle-shaped and can be inserted into the EVA sheet to achieve stable conveying of the EVA sheet.

[0031] In this embodiment, at least one guide roller 8 is provided in the support plate 3, and the guide roller 8 is rotatably connected to the support plate 3 to guide the movement of the EVA sheet, ensuring that the EVA sheet can pass through the support plate 3 smoothly and preventing the EVA sheet from adhering to and clogging the support plate 3.

[0032] Combine Figure 1 The removal mechanism 4 includes at least one brush roller assembly and a flushing assembly for providing a medium (water) to flush the PU foam removed by the brush roller assembly out of the surface of the EVA sheet. The brush roller assembly can move along the Z-axis to adjust the distance from the support plate 3. The flushing assembly is located on one side of the brush roller assembly. The distance between the brush roller assembly and the support plate 3 can be adjusted by providing cylinders at both ends of the brush roller assembly, thereby adjusting the brushing force on the EVA sheet. The brush roller assembly can be a bristle brush roller; the flushing assembly includes a nozzle and a filter, as well as a supply device connecting the nozzle and the collection assembly, for supplying the medium in the collection assembly to the nozzle, which can be connected by a hose; the filter is used to filter the medium, and the filter is located between the supply device and the collection assembly. The supply device is a pump.

[0033] In some embodiments, the removal mechanism 4 is provided on both the upper and lower sides of the support plate 3 , so that both the upper and lower end surfaces of the EVA sheet can be cleaned at the same time to improve the cleaning quality.

[0034] The collection assembly is located at the bottom of the separation box 1, at the bottom of the feeding mechanism 2 and the conveyor belt 5. From top to bottom, the collection assembly includes a filter component 6 and a liquid storage tank 7. The filter component 6 can be a filter basket with tiny holes on its surface. The filter component 6 is located between the liquid storage tank 7 and the feeding mechanism 2 and is used to collect and filter the PU foam. The filter component 6 is slidably connected to the separation box 1 and can be moved along the x-axis to be pulled out or pushed in to remove the PU foam from the filter component 6. This can be achieved by providing a slide rail.

[0035] During use, the soaked EVA sheet is fed from the feed end 100 into the separation box 1 through the feeding mechanism 2. The EVA sheet entering the separation box 1 will first contact the support plate 3, and the support plate 3 guides the EVA sheet to move toward the discharge end 200. The removal mechanism 4 then cleans the PU foam on the surface of the EVA sheet and cooperates with the feeding mechanism 2 to move the EVA sheet to the discharge end 200. After the brush roller assembly cleans the PU foam, the flushing assembly flushes the PU foam into the collection assembly, and the PU foam will be flushed into the filter component 6 for separation. The PU foam remains in the filter component 6, and the flushing medium flows into the liquid storage tank 7 for the flushing assembly to extract and flush. After cleaning, the EVA sheet will be sent to the conveyor belt 5 by the feeding mechanism 2 and transported out of the separation box 1 to the next process.

Claims

1. PU foam removal device, characterized by: It includes a separation box, and a feeding mechanism and a conveyor belt arranged in the separation box, wherein the feeding mechanism is used to feed the EVA sheet into the separation box; A removal mechanism is provided above the feeding mechanism for cleaning the PU foam, and the conveyor belt can transport the cleaned EVA sheet out of the separation box; A collecting component, the collecting component is arranged at the bottom of the separation box, and the collecting component is used to collect the PU foam; A driving device is respectively connected to the feeding mechanism and the removing mechanism.

2. The PU foam removal device according to claim 1, characterized in that: The removal mechanism includes a brush roller assembly and a flushing assembly. The flushing assembly is arranged on one side of the brush roller assembly and is used to provide a medium to flush the PU foam cleaned by the brush roller assembly into the collection assembly.

3. The PU foam removal device according to claim 2, characterized in that: The flushing assembly includes a nozzle and a supply device, and the supply device is connected to the nozzle and the collecting assembly respectively.

4. The PU foam removal device according to claim 3, characterized in that: The utility model further comprises a filter, wherein the filter is arranged between the collecting component and the supply device.

5. The PU foam removal device according to claim 1, characterized in that: The feeding mechanism includes at least two groups of feeding rollers and a support plate horizontally arranged between the feeding rollers, and the removing mechanism is arranged on the upper side of the support plate.

6. The PU foam removal device according to claim 5, characterized in that: The feeding roller includes a first driving roller and a second driving roller. A feeding gap is left between the first driving roller and the second driving roller. The outer surfaces of the first driving roller and the second driving roller are both provided with a plurality of protrusions.

7. The PU foam removal device according to claim 6, characterized in that: The protrusion is in the shape of needles.

8. The PU foam removal device according to claim 5, characterized in that: At least one guide roller is further provided in the support plate, and the guide roller is rotatably connected to the support plate to guide the movement of the EVA sheet.

9. The PU foam removal device according to claim 1, characterized in that: The collecting assembly includes a filtering component and a liquid storage tank. The filtering component is arranged between the liquid storage tank and the feeding mechanism and is used to collect the PU foam.

10. The PU foam removal device according to claim 9, characterized in that: The filter component is slidably connected to the separation box and can move along the x-axis direction.

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