Plastic woven bag film coating device

Abstract

The utility model discloses a plastic woven bag film coating device which comprises a film coating box, a pretreatment box and a drying box, the left side of the film coating box is communicated with the pretreatment box, the right side of the film coating box is communicated with the drying box, two air blowing covers are arranged in the pretreatment box in an up-down structure, and the opposite faces of the two air blowing covers are provided with brushes and air blowing openings. According to the plastic woven bag raw material pretreatment device, the two air blowing covers with the brushes are arranged in the pretreatment box up and down, when plastic woven bag raw materials penetrate through the pretreatment box, the air blower is started to be guided into the two air blowing covers through the air inlet pipe and the telescopic hose, and air is blown to the two faces of the plastic woven bag raw materials through the air outlets formed in the opposite faces of the two air blowing covers; impurities or residues attached to the two faces of the plastic woven bag raw materials are removed in an air blowing mode, in the process, the brushes arranged on the opposite faces of the air blowing covers conduct double-face cleaning on the plastic woven bag raw materials, pre-cleaning treatment before film coating of the plastic woven bag raw materials is achieved, and the film coating effect and quality are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of film coating, in particular to a film coating device for plastic woven bags. Background Art

[0002] Plastic woven bags are divided into polypropylene bags and polyethylene bags according to the main material composition; they are divided into bottom-sewn bags and side-sewn bottom-sewn bags according to the sewing method. Plastic woven bags are currently widely used in the packaging of fertilizers, chemical products, agricultural products and other items. Its main production process is to use plastic raw materials to extrude films, cut, and unidirectionally stretch them into flat wires, and then weave them through warp and weft to obtain products, which are generally called woven bags. When woven bags are used to carry some special items, they sometimes need to have moisture-proof and waterproof functions, which requires a layer of waterproof material to be coated on both sides of the woven bags.

[0003] After searching, the publication number CN216261631U discloses a double-sided coating device for plastic woven bags, including a support plate, a first support column is provided on the top of the support plate, a coating roller, a servo motor and a coating tank are provided on the outer wall of the first support column, a discharge port is provided on the outer wall of the coating tank, a baffle is provided on the inner wall of the discharge port, a brush is provided on the outer wall of the discharge port, a push plug is provided on the inner wall of the coating tank, a push column is provided on the outer wall of the push plug, a rack is provided on the outer wall of the push column, an irregular gear is provided on the outer side of the rack, and a first rotating shaft is provided on the outer wall of the irregular gear. The utility model can evenly apply the coating agent to the outer wall of the coating roller, so that the coating roller evenly applies the coating agent to the outer wall of the woven raw material, achieving the effect of uniform coating, and can simultaneously apply coating to the upper and lower surfaces of the woven raw material, thereby improving the working efficiency of coating, and can intermittently apply the coating agent to the outer wall of the coating roller, reasonably control the use of the coating agent, avoid unnecessary waste, and improve resource utilization.

[0004] However, since the scheme does not provide a pretreatment device and a drying device for the woven raw materials, during the coating process of the woven raw materials, impurities and attachments on the surface of the woven raw materials will have an adverse effect on the coating effect, and the woven raw materials that are not completely dried will cause adhesion, which is not conducive to the subsequent processing and packaging of the plastic woven bags.

[0005] To this end, a plastic woven bag coating device is proposed, which has the advantages of convenient pretreatment and drying of woven raw materials, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a plastic woven bag coating device.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a plastic woven bag coating device, comprising a coating box, a pretreatment box and a drying box, the left side of the coating box is connected to the pretreatment box, and the right side of the coating box is connected to the drying box, the interior of the pretreatment box is arranged in an up-and-down structure with two blowing hoods, and the facing surfaces of the two blowing hoods are provided with brushes and blowing ports, and the separated surfaces of the two blowing hoods are respectively connected with telescopic hoses, a blower is fixedly installed on the outer wall of the pretreatment box, and the air outlet of the blower is connected with an air inlet pipe, one end of the air inlet pipe is connected to the telescopic hoses of the two blowing hoods through a tee, the interior of the drying box is arranged in an up-and-down structure with two hot air hoods, and the separated surfaces of the two hot air hoods are respectively connected with hot air pipes, and the drying A hot air blower is fixedly installed on the outer wall of the box, and an air duct is connected to the air outlet of the hot air blower, one end of the air duct is connected to the hot air ducts of the two hot air hoods through a tee, two motors are fixedly installed on the outer wall of the coating box, and the output ends of the two motors respectively pass through the coating box and are fixedly connected to an upper coating roller and a lower coating roller, a storage hopper is arranged below the lower coating roller, and a left feed pipe is arranged on the left side of the storage hopper, and a right feed pipe is arranged on the right side of the storage hopper, liquid pumps are installed on the lower surfaces of the left and right feed pipes, and the tops of the left and right feed pipes are connected to square tubes, a number of spray nozzles are arranged on the surface of the square tube, and brush strips are obliquely arranged below the several spray nozzles, and guide rollers are connected to both sides of the coating box through bearings.

[0008] As a further description of the above technical solution: a guide rod is arranged on the left side inside the pretreatment box, and a bidirectional screw is connected to the right side inside the pretreatment box through a bearing seat, a guide sleeve is fixed on the left side of the two blow hoods, and the guide sleeve is socketed with the guide rod, and a threaded sleeve is fixed on the right side of the two blow hoods, and the threaded sleeve is threadedly connected to the bidirectional screw.

[0009] As a further description of the above technical solution: the spray nozzle and brush strip of the left feed pipe correspond to the upper coating roller, the spray nozzle and brush strip of the right feed pipe correspond to the lower coating roller, the length of the square tube and the brush strip is adapted to the length of the upper coating roller and the lower coating roller, and a U-shaped bending portion is provided on the upper surface of the left feed pipe.

[0010] As a further description of the above technical solution: the facing surfaces of the two blowing hoods are each provided with a plurality of brushes and a plurality of blowing ports, and the plurality of brushes and the plurality of blowing ports are arranged at intervals.

[0011] As a further description of the above technical solution: the cross-section of the storage hopper is an inverted isosceles trapezoidal structure, and supports are welded on both sides of the interior of the storage hopper, and the surface of the support is provided with an insertion hole corresponding to the left feed pipe or the right feed pipe, and a rubber sealing ring is arranged in the insertion hole.

[0012] As a further description of the above technical solution: tempered glass is embedded and installed on the lower surface of the coating box, and the position of the tempered glass corresponds to the position of the storage hopper.

[0013] As a further description of the above technical solution: the separated ends of the pretreatment box and the drying box are both provided with rectangular openings.

[0014] The utility model has the following beneficial effects:

[0015] The utility model adopts two blowing hoods with brushes arranged in the upper and lower parts in the pretreatment box. When the plastic woven bag raw materials pass through the pretreatment box, the blower is started to prompt the blower to guide the air inlet pipe and the telescopic hose into the two blowing hoods, and the air outlets opened on the opposite sides of the two blowing hoods are blown to the two sides of the plastic woven bag raw materials, so as to remove impurities or residues attached to the two sides of the plastic woven bag raw materials in the form of blowing. In this process, the brushes arranged on the opposite sides of the blowing hoods clean the plastic woven bag raw materials on both sides, so as to achieve the pre-cleaning treatment of the plastic woven bag raw materials before coating, and ensure the coating effect and quality. Two hot air hoods are arranged in the upper and lower parts in the drying box. When the plastic woven bag raw materials are coated, the hot air blower is started to prompt the hot air blower to introduce the hot air into the two hot air ducts in a diversion manner from the air guide duct, so that the two hot air hoods synchronously dry the plastic woven bag raw materials passing through the drying box on both sides, so as to accelerate the drying plastic of the waterproof material on the surface of the plastic woven bag raw materials, so as to facilitate the subsequent winding and packaging of the plastic woven bag raw materials.

[0016] In the utility model, a storage hopper, a left feeding pipe and a right feeding pipe are used to constitute the respective feeding mechanisms of the upper coating roller and the lower coating roller. By starting the motors installed on the roller shafts of the upper coating roller and the lower coating roller, the upper coating roller and the lower coating roller are caused to rotate. At this time, the liquid pumps arranged on the lower surfaces of the left feeding pipe and the right feeding pipe are started to cause the liquid pumps to extract the liquid waterproof material in the storage hopper and pour it into the square tubes at the tops of the left feeding pipe and the right feeding pipes. Since a plurality of spray nozzles are arranged at equal intervals on the surface of the square tube, and the upper surfaces of the left feeding pipe and the right feeding pipe are respectively arranged with brush strips which are in contact with the upper coating roller and the lower coating roller, the liquid waterproof material is sprayed on the surfaces of the upper coating roller and the lower coating roller by the plurality of spray nozzles, and the liquid waterproof material is evenly brushed by the brush strips to achieve the effect of evenly coating the raw materials of the plastic woven bag on both sides. Compared with the existing coating device, it is easy to collect the waterproof material while ensuring the uniformity of the coating, thereby improving the utilization rate of the waterproof material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the internal structure of a plastic woven bag coating device of the utility model;

[0018] Figure 2 This is a schematic diagram of the external structure of a plastic woven bag coating device of the utility model;

[0019] Figure 3The utility model is a schematic diagram of the structure of the left feeding pipe of a plastic woven bag coating device.

[0020] Legend:

[0021] 1. Coating box; 2. Pretreatment box; 3. Drying box; 4. Upper coating roller; 5. Lower coating roller; 6. Guide roller; 7. Storage hopper; 8. Left feeding pipe; 9. Right feeding pipe; 10. Blowing hood; 11. Telescopic hose; 12. Bidirectional screw; 13. Threaded sleeve; 14. Guide sleeve; 15. Guide rod; 16. Hot air hood; 17. Hot air duct; 18. Blower; 19. Air inlet duct; 20. Hot air blower; 21. Air guide duct; 22. Motor; 23. Liquid pump; 24. Square tube; 25. Spray nozzle; 26. Brush strip; 27. Bending part. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] According to an embodiment of the utility model, a plastic woven bag coating device is provided.

[0024] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3As shown, a plastic woven bag coating device according to an embodiment of the utility model comprises a coating box 1, a pretreatment box 2 and a drying box 3. The left side of the coating box 1 is connected to the pretreatment box 2, and the right side of the coating box 1 is connected to the drying box 3. The interior of the pretreatment box 2 is arranged in an upper and lower structure with two blowing hoods 10, and the facing surfaces of the two blowing hoods 10 are provided with brushes and blowing ports, and the separated surfaces of the two blowing hoods 10 are respectively connected with telescopic hoses 11. A blower 18 is fixedly installed on the outer wall of the pretreatment box 2, and the air outlet of the blower 18 is connected with an air inlet pipe 19, and one side of the air inlet pipe 19 is connected to the air outlet of the blower 18. The ends are connected to the telescopic hoses 11 of the two blowing hoods 10 through a tee, the interior of the drying box 3 is arranged with two hot air hoods 16 in an upper and lower structure, and the separated surfaces of the two hot air hoods 16 are respectively connected with hot air pipes 17, a hot air blower 20 is fixedly installed on the outer wall of the drying box 3, and the air outlet of the hot air blower 20 is connected with an air guide duct 21, one end of the air guide duct 21 is connected to the hot air pipes 17 of the two hot air hoods 16 through a tee, two motors 22 are fixedly installed on the outer wall of the coating box 1, and the output ends of the two motors 22 respectively penetrate the coating box 1 and are fixedly connected with an upper coating roller 4 and a lower coating roller 5, and the lower A storage hopper 7 is arranged below the coating roller 5, and a left feeding pipe 8 is arranged on the left side inside the storage hopper 7, and a right feeding pipe 9 is arranged on the right side inside the storage hopper 7. Liquid pumps 23 are installed on the lower surfaces of the left feeding pipe 8 and the right feeding pipe 9, and the tops of the left feeding pipe 8 and the right feeding pipe 9 are connected to square tubes 24, and a plurality of spray nozzles 25 are arranged on the surface of the square tube 24, and brush strips 26 are arranged obliquely below the plurality of spray nozzles 25. Guide rollers 6 are connected to the coating box 1 on both sides through bearings. In this patent, we only It is used without improving its structure and function. For those skilled in the art, its setting mode, installation mode and electrical connection mode can be debugged and operated according to the requirements of its instruction manual, and will not be described in detail here. The blower 18, the hot air blower 20, the motor 22 and the liquid pump 23 are all provided with control switches matched therewith. The installation position of the control switch is selected according to the actual use requirements, which is convenient for the operator to operate and control. The telescopic hose 11 is a well-known prior art and there are mature products, so it will not be described in detail.

[0025] In one embodiment, a guide rod 15 is provided on the left side of the interior of the pretreatment box 2, and a bidirectional screw 12 is connected to the right side of the interior of the pretreatment box 2 through a bearing seat, a guide sleeve 14 is fixed to the left side of the two blow hoods 10, and the guide sleeve 14 is socketed with the guide rod 15, and a threaded sleeve 13 is fixed to the right side of the two blow hoods 10, and the threaded sleeve 13 is threadedly connected to the bidirectional screw 12. By rotating the bidirectional screw 12, the two threaded sleeves 13 drive the two blow hoods 10 to move toward each other. Combined with the adaptive telescopic hose 11 and the guiding action of the guide sleeve 14 and the guide rod 15, the distance between the two blow hoods 10 is adjustable to ensure the cleaning effect of the surface of the plastic woven bag raw material.

[0026] In one embodiment, the spray nozzle 25 and the brush strip 26 of the left feeding pipe 8 correspond to the upper coating roller 4, the spray nozzle 25 and the brush strip 26 of the right feeding pipe 9 correspond to the lower coating roller 5, the lengths of the square tube 24 and the brush strip 26 are adapted to the lengths of the upper coating roller 4 and the lower coating roller 5, and a U-shaped bending portion 27 is provided on the upper surface of the left feeding pipe 8. The setting of the bending portion 27 is adopted to make way for the transportation of plastic woven bag raw materials.

[0027] In one embodiment, the facing surfaces of the two blowing hoods 10 are provided with a plurality of brushes and a plurality of blowing ports, and the plurality of brushes and the plurality of blowing ports are arranged at intervals, so that the plastic woven bag raw materials can be blown and cleaned to remove impurities, wherein the plurality of brushes and the plurality of blowing ports are arranged vertically with respect to the conveying track of the plastic woven bag raw materials.

[0028] In one embodiment, the cross-section of the storage hopper 7 is an inverted isosceles trapezoidal structure, and supports are welded on both sides of the interior of the storage hopper 7. An insertion hole is provided on the surface of the support corresponding to the left feed pipe 8 or the right feed pipe 9, and a rubber sealing ring is provided in the insertion hole. A mounting structure is provided for the left feed pipe 8 or the right feed pipe 9 through the insertion hole of the support. The storage hopper 7 can also recover excess waterproof material of the lower coating roller 5.

[0029] In one embodiment, tempered glass is embedded in the lower surface of the coating box 1, and the position of the tempered glass corresponds to the position of the storage hopper 7. The tempered glass is provided to observe the liquid level of the storage hopper 7, so as to facilitate the timely addition of waterproof material.

[0030] In one embodiment, the separated ends of the pretreatment box 2 and the drying box 3 are both provided with rectangular openings, and the plastic woven bag raw materials are transported through the rectangular openings.

[0031] Working principle:

[0032] When in use, first inject the waterproof material required for coating the plastic woven bag raw material into the storage hopper 7, and then the plastic woven bag raw material passes through the pretreatment box 2, the coating box 1 and the drying box 3 in sequence. When the plastic woven bag raw material passes through the pretreatment box 2, the blower 18 is started to prompt the blower 18 to guide the air inlet pipe 19 and the telescopic hose 11 into the two blowing hoods 10, and the air outlets opened on the opposite sides of the two blowing hoods 10 are blown to both sides of the plastic woven bag raw material, so as to remove impurities or residues attached to both sides of the plastic woven bag raw material in the form of blowing. In this process, the brushes arranged on the opposite sides of the blowing hoods 10 clean the plastic woven bag raw material on both sides, so as to realize the pre-cleaning treatment of the plastic woven bag raw material before coating. When coating, the motor 22 installed on the roller shaft of the upper coating roller 4 and the lower coating roller 5 is started to rotate the upper coating roller 4 and the lower coating roller 5. At this time, the left feeding pipe 8 and the right feeding pipe 8 are started. The liquid pump 23 arranged on the lower surface of the material pipe 9 prompts the liquid pump 23 to extract the liquid waterproof material in the storage hopper 7 and pour it into the square tube 24 at the top of the left feeding pipe 8 and the right feeding pipe 9. Since a number of spray nozzles 25 are equidistantly arranged on the surface of the square tube 24, and the upper surfaces of the left feeding pipe 8 and the right feeding pipe 9 are respectively provided with brush strips 26 that keep contact with the upper coating roller 4 and the lower coating roller 5, the liquid waterproof material is sprayed on the surface of the upper coating roller 4 and the lower coating roller 5 by the number of spray nozzles 25, and the liquid waterproof material is evenly brushed by the brush strips 26. When the coating of the plastic woven bag raw material is completed, the hot air blower 20 is started to prompt the hot air blower 20 to introduce the hot air from the air guide pipe 21 into the two hot air pipes 17 in a split-flow manner, so that the two hot air hoods 16 perform double-sided synchronous drying on the plastic woven bag raw material passing through the drying box 3, thereby accelerating the drying of the waterproof material on the surface of the plastic woven bag raw material.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plastic woven bag coating device, comprising a coating box (1), a pretreatment box (2) and a drying box (3), characterized in that: The left side of the coating box (1) is connected to a pretreatment box (2), and the right side of the coating box (1) is connected to a drying box (3). The interior of the pretreatment box (2) is provided with two blow hoods (10) in an upper and lower structure, and the facing surfaces of the two blow hoods (10) are provided with brushes and blow ports, and the separated surfaces of the two blow hoods (10) are respectively connected to telescopic hoses (11). A blower (18) is fixedly installed on the outer wall of the pretreatment box (2), and the blower (18 ) is connected to an air inlet pipe (19) at the air outlet, one end of the air inlet pipe (19) is connected to the telescopic hoses (11) of the two blowing hoods (10) through a tee, two hot air hoods (16) are arranged in an upper and lower structure inside the drying box (3), and the separated surfaces of the two hot air hoods (16) are respectively connected to hot air pipes (17), and a hot air blower (20) is fixedly installed on the outer wall of the drying box (3), and the air outlet of the hot air blower (20) is connected to an air guide pipe (21 ), one end of the air guide pipe (21) is connected to the hot air pipes (17) of the two hot air hoods (16) through a tee, two motors (22) are fixedly installed on the outer wall of the coating box (1), and the output ends of the two motors (22) respectively penetrate the coating box (1) and are fixedly connected to the upper coating roller (4) and the lower coating roller (5), a storage hopper (7) is arranged below the lower coating roller (5), and a left feed pipe (8) is arranged on the left side of the storage hopper (7), and the storage hopper ( 7) A right feed pipe (9) is arranged on the right side inside, and a liquid pump (23) is installed on the lower surface of the left feed pipe (8) and the right feed pipe (9), and the tops of the left feed pipe (8) and the right feed pipe (9) are connected to a square tube (24), and a plurality of spray nozzles (25) are arranged on the surface of the square tube (24), and brush strips (26) are arranged obliquely below the plurality of spray nozzles (25), and guide rollers (6) are connected to the coating box (1) on both sides through bearings.

2. A plastic woven bag coating device according to claim 1, characterized in that: A guide rod (15) is arranged on the left side of the interior of the pretreatment box (2), and a bidirectional screw rod (12) is connected to the right side of the interior of the pretreatment box (2) via a bearing seat; a guide sleeve (14) is fixed on the left side of the two blowing hoods (10), and the guide sleeve (14) is sleeved with the guide rod (15); a threaded sleeve (13) is fixed on the right side of the two blowing hoods (10), and the threaded sleeve (13) is threadedly connected to the bidirectional screw rod (12).

3. The plastic woven bag coating device according to claim 1, characterized in that: The spray nozzle (25) and the brush strip (26) of the left feed pipe (8) correspond to the upper coating roller (4), and the spray nozzle (25) and the brush strip (26) of the right feed pipe (9) correspond to the lower coating roller (5). The lengths of the square tube (24) and the brush strip (26) are adapted to the lengths of the upper coating roller (4) and the lower coating roller (5). A U-shaped bending portion (27) is provided on the upper surface of the left feed pipe (8).

4. The plastic woven bag coating device according to claim 1, characterized in that: The facing surfaces of the two blowing covers (10) are both provided with a plurality of brushes and a plurality of blowing ports, and the plurality of brushes and the plurality of blowing ports are arranged at intervals.

5. The plastic woven bag coating device according to claim 1, characterized in that: The cross section of the storage hopper (7) is an inverted isosceles trapezoidal structure, and supports are welded on both sides of the interior of the storage hopper (7). The surface of the support is provided with an insertion hole corresponding to the left feed pipe (8) or the right feed pipe (9), and a rubber sealing ring is arranged in the insertion hole.

6. The plastic woven bag coating device according to claim 1, characterized in that: The lower surface of the coating box (1) is embedded with tempered glass, and the position of the tempered glass corresponds to the position of the storage hopper (7).

7. The plastic woven bag coating device according to claim 1, characterized in that: The separated ends of the pretreatment box (2) and the drying box (3) are both provided with rectangular openings.

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