A PET fruit and vegetable box anti-fog coating uniform spraying device

Abstract

The utility model discloses a PET fruit and vegetable box anti -fog coating even spraying device relates to fruit and vegetable box production technical field, the utility model discloses a work table is rotatably installed with the chain plate type conveyer belt on the work table, and one side fixed mounting of work table has the first motor, and the surface fixed mounting of conveyer belt has equidistance distribution's multiple placing plate, and multiple placing plate all install the limit component, and the hinge mounting of spraying pipe is installed on the work table, and the infrared line drying channel is fixedly installed on the work table, and the driving gear is fixedly installed to the pivot one end of spraying pipe, and the slide frame is slidably installed to one side of work table, and the second rack is fixedly installed to the bottom of slide frame, and the second rack is engaged with driving gear, and the first rack is fixedly installed to the inside upper and lower sides of slide frame, and one side fixed mounting of work table has the second motor, thereby can realize automatic even spraying to fruit and vegetable box body, replaces manual spraying, and the time and effort are saved, and the efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of fruit and vegetable box production technology, specifically to a device for uniformly spraying an anti-fog coating on PET fruit and vegetable boxes. Background Technology

[0002] PET (polyethylene terephthalate) fruit and vegetable boxes are widely used in the fresh produce packaging industry due to their advantages such as transparency, light weight, and recyclability. To prevent condensation from forming on the inner surface of the box due to temperature differences between the inside and outside of the fruit and vegetable in refrigerated environments, which would affect the product's appearance and quality, an anti-fog coating is usually sprayed onto the inner surface of the PET fruit and vegetable box.

[0003] Currently, the industry mostly uses manual hand-held spray guns to apply anti-fog coatings to PET fruit and vegetable boxes. This method has many drawbacks: First, manual spraying relies entirely on the experience and skill of the operator, making it difficult to guarantee uniformity and easily resulting in uneven coating thickness, missed areas, or slurry buildup. A coating that is too thin provides poor anti-fog performance, while a coating that is too thick wastes material. Second, manual spraying is inefficient and labor-intensive. Utility Model Content

[0004] To address the problems of inconsistent coating quality, time-consuming, labor-intensive, and inefficient manual spraying with handheld spray guns, this invention aims to provide a device for uniformly spraying anti-fog coatings on PET fruit and vegetable boxes.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a uniform spraying device for anti-fog coating of PET fruit and vegetable boxes, including a workbench, a chain conveyor belt rotatably mounted on the workbench, a first motor fixedly mounted on one side of the workbench, and the output end of the first motor fixedly connected to one end of the drive shaft of the conveyor belt, multiple placement plates evenly distributed on the surface of the conveyor belt, each placement plate being equipped with a limit component, a spraying pipe hinged on the workbench, an infrared drying tunnel fixedly mounted on the workbench, a drive gear fixedly mounted on one end of the rotating shaft of the spraying pipe, a sliding frame slidably mounted on one side of the workbench, a second rack fixedly mounted on the bottom end of the sliding frame, and the second rack meshing with the drive gear, first racks fixedly mounted on both the upper and lower sides inside the sliding frame, a second motor fixedly mounted on one side of the workbench, and a half gear fixedly mounted on the output end of the second motor, and the half gear meshing with the corresponding first rack.

[0006] Preferably, each of the multiple limiting components includes two symmetrically distributed first limiting plates, and the first limiting plates are slidably mounted on corresponding placement plates. Two symmetrically distributed second limiting plates are slidably mounted on each of the multiple placement plates. A first bidirectional lead screw is rotatably mounted in each of the multiple placement plates, and the first bidirectional lead screw is threaded into the bottom end of the corresponding two first limiting plates. A second bidirectional lead screw is rotatably mounted in each of the multiple placement plates, and the second bidirectional lead screw is threaded into the bottom end of the corresponding two second limiting plates. A bellows cover is fixedly mounted in the sliding groove of each of the multiple placement plates.

[0007] Preferably, a protective shell is detachably installed on one side of the workbench by bolts, and the sliding frame, drive gear, and half gear are all installed inside the protective shell, while the second motor is fixedly installed outside the protective shell, and a collection box is placed below the workbench.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] 1. In this utility model, a second motor drives a half-gear to rotate. The half-gear meshes with the first rack inside the sliding frame, causing the sliding frame to move back and forth. The sliding frame drives the second rack to move back and forth, and the second rack drives the drive gear to rotate back and forth. The drive gear drives the spraying pipe to swing back and forth above the fruit and vegetable box body to spray the fruit and vegetable box body. This can achieve automatic and uniform spraying of the fruit and vegetable box body, replacing manual spraying, saving time and effort and increasing efficiency.

[0010] 2. In this utility model, by setting a limiting component, the limiting component can be used to limit the fruit and vegetable boxes of different sizes, which can prevent the fruit and vegetable boxes from shifting during the spraying process and affecting the spraying effect. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the fruit and vegetable box body of this utility model in two placement states;

[0014] Figure 3 This is a schematic diagram of the cross-sectional structure of the placement plate of this utility model;

[0015] Figure 4 This is a schematic diagram of the spray pipe structure of this utility model;

[0016] Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Workbench; 2. Conveyor belt; 3. First motor; 4. Placement plate; 5. Fruit and vegetable box body; 6. Spraying pipe; 7. Drying tunnel; 8. Collection box; 9. Limiting assembly; 901. First limiting plate; 902. Second limiting plate; 903. Bellows cover; 904. Second bidirectional lead screw; 905. First bidirectional lead screw; 10. Protective shell; 11. Drive gear; 12. Sliding frame; 13. First rack; 14. Second rack; 15. Second motor; 16. Half gear. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Figure 1-5 As shown, this utility model provides: a uniform spraying device for anti-fog coating of PET fruit and vegetable boxes, including a workbench 1, a chain conveyor belt 2 rotatably mounted on the workbench 1, a first motor 3 fixedly mounted on one side of the workbench 1, and the output end of the first motor 3 fixedly connected to one end of the drive shaft of the conveyor belt 2, multiple placement plates 4 evenly distributed on the surface of the conveyor belt 2, the placement plates 4 being mounted on the corresponding chain plates of the conveyor belt 2, and limit components 9 being installed on each of the multiple placement plates 4, a spraying pipe 6 hinged to the workbench 1, which can be connected to an external paint supply mechanism so that the external paint is delivered close to the spraying pipe 6 and sprayed out through multiple nozzles arranged in a ring on the inner side of the spraying pipe 6, an infrared drying tunnel 7 fixedly mounted on the workbench 1, and one end of the rotating shaft of the spraying pipe 6 A drive gear 11 is fixedly installed. A sliding frame 12 is slidably installed on one side of the workbench 1. A second rack 14 is fixedly installed at the bottom of the sliding frame 12 and meshes with the drive gear 11. A first rack 13 is fixedly installed on both the upper and lower sides inside the sliding frame 12. A second motor 15 is fixedly installed on one side of the workbench 1, and a half-gear 16 is fixedly installed at the output end of the second motor 15. The half-gear 16 can mesh with the corresponding first rack 13. The fruit and vegetable box body 5 that needs to be sprayed with anti-fog coating can be placed on the placement plate 4 and limited by the limiting component 9 (limiting only, not clamping). The first motor 3 can drive the conveyor belt 2 to transport the fruit and vegetable box body 5 on the placement plate 4. When the fruit and vegetable box body 5 moves to the spray pipe 6 ( Figure 1 As shown, the first motor 3 and conveyor belt 2 stop working, and the second motor 15 drives the half gear 16 to rotate. The half gear 16 meshes with the first rack 13 inside the sliding frame 12, causing the sliding frame 12 to move back and forth. The sliding frame 12 drives the second rack 14 to move back and forth, and the second rack 14 drives the drive gear 11 to rotate back and forth. The drive gear 11 drives the spraying pipe 6 to swing back and forth above the fruit and vegetable box body 5 (the swing amplitude of the spraying pipe 6 can make the spraying range completely cover the entire fruit and vegetable box body 5, and the specific swing angle is subject to actual production). This can realize automatic uniform spraying of the fruit and vegetable box body 5. After the spraying is completed, the first motor 3 and conveyor belt 2 continue to work, driving the sprayed fruit and vegetable box body 5 to move through the drying tunnel 7. The infrared drying tunnel 7 is used to cure and dry the coating on the sprayed fruit and vegetable box body 5.

[0020] Each of the multiple limiting components 9 includes two symmetrically distributed first limiting plates 901, which are slidably mounted on corresponding placement plates 4. Two symmetrically distributed second limiting plates 902 are slidably mounted on each of the multiple placement plates 4. A first bidirectional lead screw 905 is rotatably mounted within each of the multiple placement plates 4, and the first bidirectional lead screw 905 is threaded into the bottom end of the corresponding two first limiting plates 901. A second bidirectional lead screw 904 is rotatably mounted within each of the multiple placement plates 4, and the second bidirectional lead screw 904 is threaded into the bottom end of the corresponding two second limiting plates 902. The sliding... Each slot is fixedly equipped with a bellows cover 903. Based on the external and internal dimensions of the fruit and vegetable box body 5, the first bidirectional lead screw 905 drives the corresponding two first limiting plates 901 to move towards or away from each other, and the second bidirectional lead screw 904 drives the corresponding two second limiting plates 902 to move towards or away from each other. This causes the surfaces of the first limiting plates 901 and second limiting plates 902 to contact the corresponding inner and outer surfaces of the fruit and vegetable box body 5, limiting the fruit and vegetable box body 5 without clamping it, facilitating its subsequent drop. When it is necessary to spray the interior of the fruit and vegetable box body 5, it can be... Figure 2 The left side is positioned so that the inner surfaces of the first limiting plate 901 and the second limiting plate 902 are in contact with the outer surface of the fruit and vegetable box body 5. When it is necessary to spray paint the outer surface of the fruit and vegetable box body 5, the fruit and vegetable box body 5 can be placed as follows. Figure 2 Place on the right ( Figure 2 (The right side is a cross-sectional view of the fruit and vegetable box body 5), so that the outer surfaces of the first limiting plate 901 and the second limiting plate 902 are in contact with the inner surface of the fruit and vegetable box body 5, and the bellows cover 903 can protect the bidirectional lead screw.

[0021] A protective shell 10 is detachably installed on one side of the workbench 1 by bolts, and the sliding frame 12, drive gear 11, half gear 16, etc. are all installed inside the protective shell 10, and the second motor 15 is fixedly installed on the outside of the protective shell 10. The protective shell 10 can protect the transmission structure inside it.

[0022] A collection box 8 is placed below the workbench 1. When the dried fruit and vegetable box body 5 moves below the conveyor belt 2, the fruit and vegetable box body 5 falls into the collection box 8 for collection.

[0023] Working principle: When using this utility model, the fruit and vegetable box body 5 that needs to be sprayed with anti-fog coating can be placed on the placement plate 4. According to the external and internal dimensions of the fruit and vegetable box body 5, the first bidirectional lead screw 905 drives the corresponding two first limiting plates 901 to move towards or away from each other, and the second bidirectional lead screw 904 drives the corresponding two second limiting plates 902 to move towards or away from each other, so that the surfaces of the first limiting plates 901 and the second limiting plates 902 contact the corresponding inner and outer surfaces of the fruit and vegetable box body 5, limiting the fruit and vegetable box body 5, but not clamping it, which can prevent the fruit and vegetable box from shifting during the spraying process and affecting the spraying effect.

[0024] The first motor 3 can drive the conveyor belt 2 to transport the fruit and vegetable box body 5 on the placement plate 4. When the fruit and vegetable box body 5 moves to the spray pipe 6 ( Figure 1 As shown, the first motor 3 and conveyor belt 2 stop working, and the second motor 15 drives the half gear 16 to rotate. The half gear 16 meshes with the first rack 13 inside the sliding frame 12, causing the sliding frame 12 to move back and forth. The sliding frame 12 drives the second rack 14 to move back and forth, and the second rack 14 drives the drive gear 11 to rotate back and forth. The drive gear 11 drives the spraying pipe 6 to swing back and forth above the fruit and vegetable box body 5 to spray the fruit and vegetable box body 5, thereby realizing automatic and uniform spraying of the fruit and vegetable box body 5. After the spraying is completed, the first motor 3 and conveyor belt 2 continue to work, driving the sprayed fruit and vegetable box body 5 to move through the drying tunnel 7. The infrared drying tunnel 7 is used to cure and dry the coating on the sprayed fruit and vegetable box body 5. When the dried fruit and vegetable box body 5 moves below the conveyor belt 2, the fruit and vegetable box body 5 falls into the collection box 8 for collection.

[0025] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0026] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A device for uniformly spraying an anti-fog coating on PET fruit and vegetable boxes, comprising a workbench (1), characterized in that: A chain conveyor belt (2) is rotatably mounted on the workbench (1). A first motor (3) is fixedly mounted on one side of the workbench (1), and the output end of the first motor (3) is fixedly connected to one end of the drive shaft of the conveyor belt (2). Multiple placement plates (4) are fixedly mounted on the surface of the conveyor belt (2) at equal intervals. Limiting components (9) are installed on each of the multiple placement plates (4). A spraying pipe (6) is hinged on the workbench (1). An infrared drying tunnel (7) is fixedly mounted on the workbench (1). One end of the rotating shaft of the spraying pipe (6) is fixed. A drive gear (11) is installed, and a sliding frame (12) is slidably installed on one side of the workbench (1). A second rack (14) is fixedly installed at the bottom end of the sliding frame (12), and the second rack (14) meshes with the drive gear (11). A first rack (13) is fixedly installed on both the upper and lower sides inside the sliding frame (12). A second motor (15) is fixedly installed on one side of the workbench (1), and a half-gear (16) is fixedly installed at the output end of the second motor (15), and the half-gear (16) can mesh with the corresponding first rack (13).

2. The uniform spraying device for anti-fog coating of PET fruit and vegetable boxes as described in claim 1, characterized in that, Each of the plurality of limiting components (9) includes two symmetrically distributed first limiting plates (901), and the first limiting plates (901) are slidably mounted on the corresponding placement plates (4), and two symmetrically distributed second limiting plates (902) are slidably mounted on each of the plurality of placement plates (4).

3. The uniform spraying device for anti-fog coating of PET fruit and vegetable boxes as described in claim 2, characterized in that, Each of the multiple placement plates (4) is rotatably mounted with a first bidirectional lead screw (905), and the first bidirectional lead screw (905) is threaded into the bottom end of the corresponding two first limiting plates (901).

4. The uniform spraying device for anti-fog coating of PET fruit and vegetable boxes as described in claim 2, characterized in that, Each of the multiple placement plates (4) is rotatably mounted with a second bidirectional lead screw (904), and the second bidirectional lead screw (904) is threaded into the bottom end of the corresponding two second limiting plates (902).

5. The uniform spraying device for anti-fog coating of PET fruit and vegetable boxes as described in claim 1, characterized in that, Each of the multiple placement plates (4) has a accordion cover (903) fixedly installed in a groove.

6. The uniform spraying device for anti-fog coating of PET fruit and vegetable boxes as described in claim 1, characterized in that, A protective shell (10) is detachably installed on one side of the workbench (1) by bolts, and the sliding frame (12), drive gear (11), and half gear (16) are all installed inside the protective shell (10), and the second motor (15) is fixedly installed outside the protective shell (10).

7. The uniform spraying device for anti-fog coating of PET fruit and vegetable boxes as described in claim 1, characterized in that, A collection box (8) is placed below the workbench (1).

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