A surface coating apparatus for packaging bag films

Abstract

The utility model discloses a surface coating device of packaging bag film belongs to coating device field, a surface coating device of packaging bag film, including work table, and fixed installation controller and coating box on work table, the side of coating box is provided with the trough, and the inner chamber bottom of coating box places the collection box, and the inner chamber bottom of coating box is provided with the mounting groove, and the inside mounting groove is provided with weighing sensor, and the inner chamber bottom of collection box is provided with heating sheet, it can through setting heating sheet, can heat the glue that collected in collection box, and through setting recovery mechanism simultaneously, can the glue in liquid state carries out recycling utilization, in addition, through setting weighing sensor and temperature sensor, can heat after the glue of collection reaches certain weight and make it liquefied, avoid the increase of cost, solved the problem that the glue cannot repeatedly use in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of coating apparatus, and more specifically, to a surface coating apparatus for packaging bag films. Background Technology

[0002] Packaging film is a thin plastic used to make various packaging bags. Common materials include PE, PET, and CPP. The thickness is usually between a few micrometers and tens of micrometers. It is the core substrate for packaging in the food, daily chemical, and express delivery industries. In order to make up for the performance defects of the substrate itself and give the film new functions, the surface of the packaging film needs to be coated during the production process. Hot melt adhesive is one of the commonly used types of adhesives in packaging film coating, especially suitable for packaging scenarios that require fast bonding and environmentally friendly solvent-free materials.

[0003] A search revealed Chinese patent CN219111990U, which discloses a packaging film coating device. The device includes a worktable, a fixed plate fixed to the top side of the worktable, a spray box fixed to the top side of the fixed plate, grooves on both sides of the spray box, a recycling bin placed at the bottom of the spray box, and a coating assembly installed on the top side of the spray box. The coating assembly includes the spray box, a hollow plate fixed to the top side of the spray box, and mist nozzles installed on the bottom side of the hollow plate. Through the structural design of the coating assembly, when coating the packaging film surface, five sets of mist nozzles simultaneously spray the adhesive onto the surface of the packaging film, ensuring even application of the adhesive. This prevents air bubbles from forming during subsequent wrapping, improving coating efficiency and effectiveness.

[0004] However, existing coating equipment has certain drawbacks. For example, existing coating equipment uses a recycling bin to recover the glue generated during the coating process. However, hot melt adhesive has the characteristic of rapidly cooling and solidifying at room temperature. Existing recycling devices can only collect excess hot melt adhesive and cannot maintain the liquid state of the hot melt adhesive. As a result, the collected hot melt adhesive is difficult to remove after cooling and solidifying, and it cannot be transported back to the coating component for reuse. This not only causes a large waste of hot melt adhesive and increases production costs, but also requires frequent cleaning of the solidified hot melt adhesive in the recycling bin, affecting production efficiency. Utility Model Content

[0005] 1. Technical problems to be solved To address the problems existing in the prior art, the purpose of this utility model is to provide a surface coating device for packaging bag films, which can heat the recycled hot melt adhesive to facilitate its recycling and prevent the hot melt adhesive from clogging the inside of the recycling mechanism.

[0006] 2. Technical Solution To solve the above problems, the present invention adopts the following technical solution.

[0007] A surface coating device for packaging bag film includes a workbench, a controller and a coating box fixedly installed on the workbench. The coating box has a material trough on its side, a collection box is placed at the bottom of the inner cavity of the coating box, an installation groove is provided at the bottom of the inner cavity of the coating box, a weighing sensor is installed inside the installation groove, a heating element is installed at the bottom of the inner cavity of the collection box, a temperature sensor is installed on the inner wall of the collection box, a coating mechanism and a recycling mechanism are provided on the workbench, and an anti-clogging mechanism is provided on the collection box.

[0008] Furthermore, the coating mechanism includes an adhesive tank installed on the top of the workbench, a liquid pump, and a cavity plate. The bottom of the cavity plate is provided with multiple mist nozzles. Connecting pipes are installed between the adhesive tank and the liquid pump, as well as between the liquid pump and the cavity plate.

[0009] Furthermore, the cavity plate is fixedly installed on the top of the inner cavity of the coating box, and the glue tank, the liquid pump, the cavity plate, the connecting pipe and the multiple mist nozzles are interconnected.

[0010] Furthermore, the recycling mechanism includes a circulation pump fixedly installed on the top of the glue tank, and a circulation pipe fixedly installed on the circulation pump, one end of the circulation pipe penetrating the coating tank and extending into the interior of the collection tank.

[0011] Furthermore, the surface of the circulation pipe is equipped with multiple electric heating tapes, which are respectively located at the inlet, outlet and corner of the circulation pipe.

[0012] Furthermore, the anti-clogging mechanism includes a blocking component disposed on the inner wall of the collection box, a heat insulation rod disposed on the top of the blocking component, and a driving component disposed at the connection between the heat insulation rod and the collection box.

[0013] Furthermore, the blocking component includes a blocking plate fixedly installed at the bottom of the heat insulation rod, and a sealing ring disposed on the side of the blocking plate. The sealing ring is disposed corresponding to one end of the circulation pipe, and a scraper that abuts against the inner wall of the collection box is fixedly installed at the bottom of the blocking plate.

[0014] Furthermore, the driving component includes a heat insulation plate fixedly installed at the top of the heat insulation rod, and an electric push rod fixedly installed at the top of the heat insulation plate. An installation plate is fixedly installed at the top of the electric push rod, and the installation plate is fixedly installed at the top of the collection box. A heat insulation telescopic sleeve is movably sleeved on the surface of the electric push rod, and the two ends of the heat insulation telescopic sleeve are respectively fixedly connected to the top of the heat insulation plate and the inner wall of the installation plate.

[0015] 3. Beneficial Effects Compared with existing technologies, the advantages of this utility model are: (1) This solution utilizes a heating element to heat the glue collected in the collection box. At the same time, a recycling mechanism can be set up to recycle the glue in liquid state. In addition, by setting up a weighing sensor and a temperature sensor, the collected glue can be heated to liquefy it after reaching a certain weight, thus avoiding increased costs and solving the problem that glue cannot be reused in the prior art.

[0016] (2) This solution utilizes an anti-blocking mechanism to block the position of the circulation pipe in the collection box, preventing glue from entering the circulation pipe. At the same time, by setting an electric heating tape, the inside of the circulation pipe can be heated to prevent residual glue in the circulation pipe from causing the problem of non-recyclability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 3 This is a schematic diagram of the collection box, coating mechanism, and recycling mechanism in this utility model; Figure 4 This is a schematic diagram of the coating mechanism and recycling mechanism in this utility model; Figure 5 This is a schematic diagram of the circulation pipe structure in this utility model; Figure 6 This is a schematic diagram of the anti-clogging mechanism in this utility model; Figure 7 This is a partially exploded structural diagram of the anti-clogging mechanism in this utility model.

[0018] Explanation of the labels in the diagram: 1. Workbench; 2. Controller; 3. Coating tank; 4. Material trough; 5. Collection tank; 6. Mounting slot; 7. Weighing sensor; 8. Heating element; 9. Temperature sensor; 10. Coating mechanism; 11. Recycling mechanism; 12. Anti-clogging mechanism; 101. Glue tank; 102. Liquid pump; 103. Hollow plate; 104. Mist nozzle; 105. Connecting pipe; 111. Circulating pump; 112. Circulating pipe; 113. Electric heating tape; 121. Blocking component; 122. Heat insulation rod; 123. Driving component; 1211. Blocking plate; 1212. Sealing ring; 1213. Scraper; 1231. Insulation board; 1232. Electric actuator; 1233. Mounting plate; 1234. Insulation expansion sleeve. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1: Please see Figure 1-7A surface coating device for packaging bag film includes a workbench 1, a controller 2 and a coating box 3 fixedly installed on the workbench 1. A material trough 4 is provided on the side of the coating box 3, a collection box 5 is placed at the bottom of the inner cavity of the coating box 3, and an installation groove 6 is provided at the bottom of the inner cavity of the coating box 3. A weighing sensor 7 is installed inside the installation groove 6. A heating element 8 is installed at the bottom of the inner cavity of the collection box 5, and a temperature sensor 9 is installed on the inner wall of the collection box 5. A coating mechanism 10 and a recycling mechanism 11 are provided on the workbench 1, and an anti-clogging mechanism 12 is provided on the collection box 5. The coating mechanism 10 can be used to coat the packaging bag film. During the coating process, excess glue falls into the collection box 5 for collection. The weight of the glue can be monitored by a weighing sensor 7. When the maximum threshold is reached, the heating element 8 is turned on to heat the glue. When the temperature sensor 9 detects that the temperature of the glue is between 150 degrees Celsius and 220 degrees Celsius, the glue melts rapidly. At this time, the anti-clogging mechanism 12 releases the restriction on the recycling mechanism 11, and the glue can be recycled back to the coating mechanism 10 for reuse. When the weighing sensor 7 detects that the weight of the collection box 5 has reached the minimum threshold, the heating elements 8 and 13 are turned off.

[0023] Furthermore, the coating mechanism 10 includes an adhesive tank 101 mounted on the top of the workbench 1, a pump 102, and a cavity plate 103. Multiple mist nozzles 104 are provided at the bottom of the cavity plate 103. Connecting pipes 105 are installed between the adhesive tank 101 and the pump 102, and between the pump 102 and the cavity plate 103. The cavity plate 103 is fixedly mounted on the top of the inner cavity of the coating box 3. The adhesive tank 101, pump 102, cavity plate 103, connecting pipes 105, and multiple mist nozzles 104 are interconnected. During coating, the pump 102 is turned on, and under the action of the connecting pipes 105, the adhesive in the adhesive tank 101 is introduced into the cavity plate 103, and then sprayed out through the multiple mist nozzles 104 to perform the coating operation.

[0024] Furthermore, the recycling mechanism 11 includes a circulation pump 111 fixedly installed on the top of the glue tank 101, and a circulation pipe 112 fixedly installed on the circulation pump 111. One end of the circulation pipe 112 passes through the coating box 3 and extends into the interior of the collection box 5. When recycling the glue, the circulation pump 111 is turned on, and under the action of the circulation pipe 112, the glue in the collection box 5 can be introduced into the glue tank 101 for recycling.

[0025] The circulation pipe 112 is equipped with multiple electric heating tapes 113, which are respectively located at the inlet, outlet and corner of the circulation pipe 112. By setting the electric heating tapes 113, the inside of the circulation pipe 112 can be heated, so as to avoid residual glue in the circulation pipe 112 that makes it unrecyclable.

[0026] Furthermore, the anti-clogging mechanism 12 includes a blocking component 121 disposed on the inner wall of the collection box 5. A heat insulation rod 122 is disposed on the top of the blocking component 121, and a driving component 123 is disposed at the connection between the heat insulation rod 122 and the collection box 5. Through the blocking component 121, the position of the circulation pipe 112 in the collection box 5 can be sealed after the glue is circulated, so as to prevent glue from entering the circulation pipe 112 and causing serious blockage during the glue collection process. By setting the driving component 123 and the heat insulation rod 122, the position of the blocking component 121 can be adjusted. By setting the heat insulation rod 122, the driving component 123 can be prevented from directly contacting the glue, thereby preventing damage to the driving component 123 during the heating process.

[0027] The blocking component 121 includes a blocking plate 1211 fixedly installed at the bottom of the heat insulation rod 122, and a sealing ring 1212 disposed on the side of the blocking plate 1211. The sealing ring 1212 is disposed corresponding to one end of the circulation pipe 112. A scraper 1213 is fixedly installed at the bottom of the blocking plate 1211 to abut against the inner wall of the collection box 5. By setting the blocking plate 1211, the circulation pipe 112 can be sealed. By setting the sealing ring 1212, the sealing performance of the circulation pipe 112 can be further increased. By setting the scraper 1213, the glue on the inner wall of the collection box 5 can be scraped off when the blocking plate 1211 moves downward, so as to avoid the gap between the blocking plate 1211 and the circulation pipe 112 being too large.

[0028] It should also be noted that the driving component 123 includes a heat insulation plate 1231 fixedly installed at the top of the heat insulation rod 122, and an electric push rod 1232 fixedly installed at the top of the heat insulation plate 1231. An installation plate 1233 is fixedly installed at the top of the electric push rod 1232, and the installation plate 1233 is fixedly installed at the top of the collection box 5. A heat insulation telescopic sleeve 1234 is movably sleeved on the surface of the electric push rod 1232. The two ends of the heat insulation telescopic sleeve 1234 are respectively fixedly connected to the top of the heat insulation plate 1231 and the inner wall of the installation plate 1233. By setting the electric push rod 1232, the blocking plate 1211 can be raised and lowered. By setting the heat insulation plate 1231, heat insulation can be achieved. By setting the heat insulation telescopic sleeve 1234, the heat insulation effect can be further improved, and damage to the electric push rod 1232 can be avoided.

[0029] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A surface coating device for packaging bag film, comprising a workbench (1), and a controller (2) and a coating box (3) fixedly installed on the workbench (1), characterized in that: The coating box (3) has a material trough (4) on its side. A collection box (5) is placed at the bottom of the inner cavity of the coating box (3). An installation groove (6) is opened at the bottom of the inner cavity of the coating box (3). A weighing sensor (7) is installed inside the installation groove (6). A heating element (8) is installed at the bottom of the inner cavity of the collection box (5). A temperature sensor (9) is installed on the inner wall of the collection box (5). A coating mechanism (10) and a recycling mechanism (11) are provided on the workbench (1). An anti-clogging mechanism (12) is provided on the collection box (5).

2. The surface coating apparatus for packaging bag film according to claim 1, characterized in that: The coating mechanism (10) includes an adhesive tank (101) installed on the top of the workbench (1), a liquid pump (102) and a cavity plate (103). The bottom of the cavity plate (103) is provided with a plurality of mist nozzles (104). Connecting pipes (105) are installed between the adhesive tank (101) and the liquid pump (102) and between the liquid pump (102) and the cavity plate (103).

3. The surface coating apparatus for packaging bag film according to claim 2, characterized in that: The cavity plate (103) is fixedly installed on the top of the inner cavity of the coating box (3), and the glue tank (101), the liquid pump (102), the cavity plate (103), the connecting pipe (105) and the multiple mist nozzles (104) are interconnected.

4. The surface coating apparatus for packaging bag film according to claim 2, characterized in that: The recycling mechanism (11) includes a circulation pump (111) fixedly installed on the top of the glue tank (101) and a circulation pipe (112) fixedly installed on the circulation pump (111), one end of the circulation pipe (112) penetrating the coating tank (3) and extending into the interior of the collection tank (5).

5. A device for coating the surface of a packaging bag film according to claim 4, characterized in that: The surface of the circulation pipe (112) is equipped with a plurality of electric heating tapes (113), and the plurality of electric heating tapes (113) are respectively located at the inlet, outlet and corner of the circulation pipe (112).

6. A surface coating apparatus for packaging bag film as defined in claim 4, wherein: The anti-clogging mechanism (12) includes a blocking component (121) disposed on the inner wall of the collection box (5), a heat insulation rod (122) is disposed on the top of the blocking component (121), and a driving component (123) is disposed at the connection between the heat insulation rod (122) and the collection box (5).

7. The surface coating apparatus for packaging bag film according to claim 6, characterized in that: The blocking component (121) includes a blocking plate (1211) fixedly installed at the bottom of the heat insulation rod (122), and a sealing ring (1212) disposed on the side of the blocking plate (1211). The sealing ring (1212) is disposed corresponding to one end of the circulation pipe (112). A scraper (1213) that abuts against the inner wall of the collection box (5) is fixedly installed at the bottom of the blocking plate (1211).

8. The surface coating apparatus for packaging bag film according to claim 6, characterized in that: The driving component (123) includes a heat insulation plate (1231) fixedly installed on the top of the heat insulation rod (122), and an electric push rod (1232) fixedly installed on the top of the heat insulation plate (1231). An installation plate (1233) is fixedly installed on the top of the electric push rod (1232). The installation plate (1233) is fixedly installed on the top of the collection box (5). A heat insulation telescopic sleeve (1234) is movably sleeved on the surface of the electric push rod (1232). The two ends of the heat insulation telescopic sleeve (1234) are fixedly connected to the top of the heat insulation plate (1231) and the inner wall of the installation plate (1233), respectively.

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