Metal can protective paint spraying device

Abstract

The utility model relates to a metal can protective paint spraying device which comprises a machine frame, a metal can horizontal type sequential input mechanism is arranged on the machine frame, a magnetic suction wheel disc is vertically arranged on the lower side of the input mechanism, a plurality of containing grooves are evenly distributed in the magnetic suction wheel disc in the circumferential direction, and the magnetic suction wheel disc is arranged in the containing grooves. A can wall sprayer and a can cover sprayer are sequentially arranged on the lower portion of the front side of the magnetic attraction wheel disc in the conveying direction of the metal cans, a collecting groove used for receiving dropping materials is formed in the lower side of a nozzle of the can wall sprayer and the lower side of a nozzle of the can cover sprayer, and an output mechanism enabling the metal cans to be separated from the magnetic attraction wheel disc is arranged on the lower side of the magnetic attraction wheel disc. By means of the device, spraying of metal can protective paint is conveniently achieved, and paint dripping from a nozzle can be conveniently received.

Description

Technical Field

[0001] The utility model relates to a protective coating spraying device for a metal can. Background Art

[0002] Metal cans are commonly used to package beverages and foods such as eight-treasure porridge and coconut water. When preparing metal cans, especially those for acidic beverages, it's often necessary to spray a protective coating on the inner wall and top cover to reduce corrosion. Existing methods for spraying coatings on metal cans often leave some paint residue at the nozzle after spraying, causing it to drip onto equipment and impact the production environment. Utility Model Content

[0003] The purpose of the utility model is to provide a metal can protective coating spraying device, which facilitates the spraying of the metal can protective coating and helps to receive the coating dripping from the nozzle.

[0004] The technical solution of the present utility model is: a protective coating spraying device for metal cans, comprising a frame, a horizontal sequential input mechanism for metal cans is provided on the frame, a magnetic wheel is vertically provided on the lower side of the input mechanism, a plurality of placement grooves are evenly distributed along the circumferential direction on the magnetic wheel, a tank wall sprayer and a tank cover sprayer are sequentially provided on the front lower part of the magnetic wheel along the conveying direction of the metal can, a collecting trough for receiving dripping material is provided on the lower side of the nozzle of the tank wall sprayer and the nozzle of the tank cover sprayer, and an output mechanism for separating the metal can from the magnetic wheel is provided on the lower side of the magnetic wheel.

[0005] Furthermore, the input mechanism includes a vertically arranged screw shaft driven to rotate by a motor, a side baffle is provided on one side of the screw shaft, and protective plates are respectively provided on the front and rear sides between the side baffle and the screw shaft to form a feeding channel, and a feeding channel is connected to the upper side of the feeding channel.

[0006] Furthermore, the spiral shaft is a plastic shaft.

[0007] Furthermore, the magnetic wheel includes wheels located on the front and rear sides and concentrically installed on the rotating shaft. The wheel is provided with a number of corresponding recesses at intervals along the circumferential direction. An annular magnetic block installed on the rotating shaft is provided on the inner side of the wheel. A roller is rotatably connected between two adjacent recesses on the wheel, and the circumferential surface of the roller protrudes from the recess.

[0008] Furthermore, the roller is wrapped with a rubber layer; the radius of the annular magnetic block is smaller than the distance between the concave portion and the nearest point of the axis of the rotating shaft.

[0009] Furthermore, a pair of arc-shaped guard plates with adjustable spacing are provided on one side of the magnetic wheel disc, and a driving wheel for driving the metal tank to rotate is provided between the pair of arc-shaped guard plates and beside the tank wall sprayer.

[0010] Furthermore, a longitudinal fixing plate is provided on the frame, a longitudinal adjustment slot is provided on the longitudinal fixing plate, and locking bolts passing through the longitudinal adjustment slot are fixed on the arc-shaped guard plates.

[0011] Furthermore, the nozzle of the tank wall sprayer is arranged obliquely downward, and the nozzle of the tank cover sprayer is arranged longitudinally. A collecting trough for receiving dripping material is provided below the nozzle of the tank wall sprayer and the nozzle of the tank cover sprayer.

[0012] Furthermore, the output mechanism includes a pair of lower guide rods that are arranged obliquely and extend in the conveying direction, and limiting baffles are provided on both sides above the pair of lower guide rods. A stripping baffle is provided above the pair of lower guide rods, and the upper end of the stripping baffle has an arc-shaped stripping guide portion that extends between the two wheel discs and close to the annular magnetic block.

[0013] Furthermore, the bottom plate of the stripping baffle is provided with a protective layer; fixed frames are arranged at intervals along the conveying direction of the output mechanism and are placed on the outside of the lower guide rod, the limit baffle and the stripping baffle, and the lower guide rod, the limit baffle and the stripping baffle are all fixed with adjustment bolts that pass through the fixed frame and are locked by nuts.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] 1. This device facilitates the spraying of protective coatings on metal cans and helps to catch the coating dripping from the nozzle.

[0016] 2. This device helps the metal cans to be sprayed sequentially and drives the metal cans to rotate through the drive wheel, which helps to ensure that the can wall is evenly coated and the spraying quality is guaranteed.

[0017] 3. In addition, the device also helps to output the sprayed metal cans in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 For the utility model Figure 1 Schematic diagram of direction B;

[0020] Figure 3 For the utility model Figure 1 AA section view;

[0021] Figure 4This is a side view of the installation of the tank wall sprayer and tank cover sprayer of the utility model;

[0022] Figure 5 This is a schematic diagram of the cooperation between the arc-shaped guard plate and the longitudinal fixing plate of the present utility model;

[0023] Figure 6 It is a cross-sectional view of the output mechanism of the utility model;

[0024] In the figure: 1-metal can 10-input mechanism 11-motor 12-screw shaft 13-side baffle 14-protective plate 15-feeding channel 16-fixed frame 17-adjusting bolt 20-magnetic wheel 21-placing groove 22-rotating shaft 23-wheel plate 24-annular magnetic block 25-roller 30-tank wall sprayer 40-tank cover sprayer 50-output mechanism 51-lower guide rod 52-limiting baffle 53-stripping baffle 531-arc-shaped stripping guide part 532-protective layer 54-fixed frame 541-adjusting groove 55-adjusting bolt 60-arc-shaped guard plate 61-longitudinal fixing plate 62-longitudinal adjustment groove 63-locking bolt 70-driving wheel 80-collecting trough. DETAILED DESCRIPTION

[0025] To make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description, but the present invention is not limited thereto.

[0026] refer to Figures 1 to 6

[0027] A protective coating spraying device for metal cans includes a frame, on which is provided a horizontal sequential input mechanism 10 for metal cans, a vertical magnetic wheel 20 provided below the input mechanism, and a plurality of placement grooves 21 evenly distributed along the circumferential direction on the magnetic wheel so that falling metal cans can fall into the placement grooves and be attracted by the magnetic wheel and rotate with the magnetic wheel. A can wall sprayer 30 and a can lid sprayer 40 are provided in sequence on the front lower part of the magnetic wheel along the conveying direction of the metal can so that the protective coating can be sprayed on the inner wall and bottom surface of the metal can respectively by the can wall sprayer and the can lid sprayer. An output mechanism 50 for separating the metal can from the magnetic wheel is provided below the magnetic wheel so that the metal can after spraying can be separated from the magnetic wheel and output by the output mechanism.

[0028] In this embodiment, the input mechanism includes a vertical screw shaft 12 driven by a motor 11 to allow incoming metal cans to sequentially drop into the placement grooves of the magnetic wheel. A side baffle 13 is located on one side of the screw shaft. Protective plates 14 are located between the side baffle and the front and rear sides of the screw shaft, forming a material discharge channel. A can feed channel 15 is connected to the upper side of the material discharge channel. The rotation of the screw shaft causes the metal cans to sequentially drop into the grooves of the magnetic wheel.

[0029] In this embodiment, the spiral shaft has spiral ridges on the outside, and the spiral pitch of the spiral shaft is greater than the diameter of the metal can. The spiral shaft is a plastic shaft or a metal shaft with an outer layer wrapped with a rubber layer.

[0030] In this embodiment, the protective plates are longitudinally fixed with adjusting bolts 17, which pass through the fixing brackets 16 on the frame and are locked by nuts. The adjusting bolts help to adjust the distance between the two protective plates.

[0031] In this embodiment, the magnetic wheel includes a wheel 23 located on the front and rear sides and concentrically mounted on the rotating shaft 22. The rotating shaft can be driven to rotate by a stepper motor or an electric indexing turntable. The wheel is provided with a number of corresponding recesses at intervals along the circumferential direction. For example, the number of recesses is 8, and the two recesses corresponding to the two turntables cooperate to form a placement groove. An annular magnetic block 24 is provided on the inner side of the wheel and is mounted on the rotating shaft. A roller 25 is rotatably connected between two adjacent recesses on the wheel. The circumferential surface of the roller protrudes from the recess so that the circumferential surface of the metal can is supported by the roller, thereby avoiding direct contact between the metal can and the side of the recess, and facilitating the subsequent rotation of the metal can in the placement groove.

[0032] In this embodiment, the roller is coated with a rubber layer to prevent scratches on the surface of the metal can. The radius of the annular magnet is smaller than the distance between the recess and the axis of the rotating shaft at the closest point. This provides magnetic attraction while preventing the metal can from being directly attached to the annular magnet, preventing it from falling out of the placement groove, and also facilitating subsequent separation of the metal can from the magnetic wheel.

[0033] In this embodiment, a pair of curved guard plates 60 with adjustable spacing are located on one side of the magnetic wheel. A drive wheel 70, used to drive the metal can, is located between the curved guard plates and next to the tank wall sprayer. The drive wheel can be driven by a motor through a speed reducer or by a circular belt. The drive wheel is covered with a rubber layer. When the tank wall sprayer sprays the protective coating on the metal can, the metal can is rotated to ensure a uniform coating on the can wall.

[0034] In this embodiment, a longitudinal fixing plate 61 is provided on the frame, a longitudinal adjustment slot 62 is provided on the longitudinal fixing plate, and locking bolts 63 passing through the longitudinal adjustment slot are fixed on the arc-shaped guard plates.

[0035] In this embodiment, the nozzle of the tank wall sprayer is positioned diagonally downward to better coat the tank wall; the nozzle of the tank cover sprayer is positioned longitudinally to better coat the tank cover. A collection trough 80 is located below the nozzles of the tank wall sprayer and the tank cover sprayer to catch any protective coating that drips from the nozzles.

[0036] In this embodiment, in order to allow the painted metal can to be separated from the magnetic turntable and output, the output mechanism includes a pair of lower guide rods 51 arranged obliquely downward and extending in the conveying direction, with limit baffles 52 provided on both sides above the pair of lower guide rods, and a stripping baffle 53 provided above the pair of lower guide rods. The upper end of the stripping baffle has an arc-shaped stripping guide portion 531 extending between the two wheel discs and close to the annular magnetic block. Therefore, when the metal can rotates to the bottom of the magnetic turntable and rotates upward, the metal can contacts the arc-shaped stripping guide portion, causing the metal can to separate from the placement groove and enter the output mechanism.

[0037] In this embodiment, in order to prevent the metal can from being scratched, the bottom plate of the stripping baffle is provided with a protective layer 532, such as a rubber pad, etc. A protective layer can also be provided on the lower guide rod.

[0038] In this embodiment, the stripping baffle and the limiting baffle may also be rods.

[0039] In this embodiment, in order to realize the connection between the lower guide rod, the limit baffle, the stripping baffle and the frame and adjust the position, fixed frames 54 are arranged at intervals along the transmission direction of the output mechanism and are placed on the outside of the lower guide rod, the limit baffle, and the stripping baffle. The lower guide rod, the limit baffle, and the stripping baffle are all fixed with adjustment bolts 55 that pass through the fixed frame and are locked by nuts. The fixed frame is provided with adjustment slots 541, and their respective positions are adjusted by adjusting bolts.

[0040] In this embodiment, the frame is also provided with a device for detecting whether the metal can enters the tank wall sprayer station, so that when it is detected that the metal can enters the tank wall sprayer station, the tank wall sprayer sprays once, and then when the metal can rotates to the tank cover sprayer station, it is sprayed once again by the tank cover sprayer.

[0041] During operation, metal cans are fed through the feed channel and dropped into the discharge channel. The spiral mechanism then descends, one by one, into the receiving grooves of the magnetic turntable. The cans rotate with the magnetic turntable. When they reach the can wall sprayer station, the drive wheel drives the cans, while the can wall sprayer sprays a protective coating onto the can's interior. The cans continue rotating with the magnetic turntable until they reach the can lid sprayer station, where the can lid sprayer applies a protective coating onto the can lid. The cans continue rotating with the magnetic turntable until they encounter the curved stripping guide, releasing them from the receiving grooves and being ejected outwards via an inclined ejection mechanism.

[0042] If the present invention discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by integral molding using a casting process) (except where it is obviously not possible to use an integrated molding process).

[0043] In addition, unless otherwise stated, the terms used in any technical solution disclosed in the above-mentioned utility model to express positional relationships or shapes include states or shapes that are approximate, similar or close thereto.

[0044] Any component provided by the present invention can be assembled from multiple separate components, or can be a separate component manufactured by an integral forming process.

[0045] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A protective coating spraying device for metal cans, comprising a frame, characterized in that: The frame is provided with a horizontal sequential input mechanism for metal cans, a magnetic wheel is vertically provided at the lower side of the input mechanism, a plurality of placement grooves are evenly distributed along the circumferential direction on the magnetic wheel, a tank wall sprayer and a tank cover sprayer are sequentially provided at the front lower part of the magnetic wheel along the conveying direction of the metal cans, a collecting trough for receiving dripping materials is provided at the lower side of the nozzle of the tank wall sprayer and the nozzle of the tank cover sprayer, and an output mechanism for separating the metal can from the magnetic wheel is provided at the lower side of the magnetic wheel.

2. The protective coating spraying device for metal cans according to claim 1, characterized in that: The input mechanism includes a vertically arranged screw shaft driven to rotate by a motor, a side baffle is provided on one side of the screw shaft, and protective plates are provided on the front and rear sides between the side baffle and the screw shaft to form a feeding channel, and a feeding channel is connected to the upper side of the feeding channel.

3. The protective coating spraying device for metal cans according to claim 2, characterized in that: The spiral shaft is a plastic shaft.

4. The protective coating spraying device for metal cans according to claim 1, 2 or 3, characterized in that: The magnetic wheel includes a wheel located on the front and rear sides and concentrically mounted on the rotating shaft. The wheel is provided with a number of corresponding recesses at intervals along the circumferential direction. An annular magnetic block mounted on the rotating shaft is provided on the inner side of the wheel. A roller is rotatably connected between two adjacent recesses on the wheel, and the circumferential surface of the roller protrudes from the recess.

5. The protective coating spraying device for metal cans according to claim 4, characterized in that: The roller is wrapped with a rubber layer; the radius of the annular magnetic block is smaller than the distance between the concave portion and the nearest point of the axis of the rotating shaft.

6. The protective coating spraying device for metal cans according to claim 1, 2, 3 or 5, characterized in that: A pair of arc-shaped guard plates with adjustable spacing are arranged on one side of the magnetic wheel disc, and a driving wheel for driving the metal tank to rotate is arranged between the pair of arc-shaped guard plates and beside the tank wall sprayer.

7. The protective coating spraying device for metal cans according to claim 6, characterized in that: The frame is provided with a longitudinal fixing plate, the longitudinal fixing plate is provided with a longitudinal adjustment slot, and the arc-shaped guard plates are all fixed with locking bolts passing through the longitudinal adjustment slot.

8. The protective coating spraying device for metal cans according to claim 1, characterized in that: The nozzle of the tank wall sprayer is arranged obliquely downward, and the nozzle of the tank cover sprayer is arranged longitudinally.

9. The protective coating spraying device for metal cans according to claim 4, characterized in that: The output mechanism includes a pair of lower guide rods that are arranged obliquely and extend in the conveying direction. Limit baffles are provided on both sides above the pair of lower guide rods. A stripping baffle is provided above the pair of lower guide rods. The upper end of the stripping baffle has an arc-shaped stripping guide portion that extends between the two wheel discs and is close to the annular magnetic block.

10. The protective coating spraying device for metal cans according to claim 9, characterized in that: The bottom plate of the stripping baffle is provided with a protective layer; fixed frames are arranged at intervals along the conveying direction of the output mechanism and are placed on the outside of the lower guide rod, the limit baffle and the stripping baffle, and the lower guide rod, the limit baffle and the stripping baffle are all fixed with adjusting bolts that pass through the fixed frame and are locked by nuts.

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