Paint spraying device for outer surface of metal packaging box

Abstract

The utility model discloses a metal packaging box outer surface paint spraying device, which relates to the technical field of metal packaging box processing and comprises a base, a top seat is fixedly mounted at the top of the base, bearing tables are fixedly mounted on two sides of the top of the top seat, and a paint spraying mechanism is fixedly mounted between the top of the base and the inner sides of the bearing tables. Adjusting and moving mechanisms are fixedly mounted on the two sides of the top base correspondingly. By the adoption of the structure, the metal box is driven by the transmission crawler belt to slide on the bearing table, when the box reaches the designated position, the paint spraying gun starts to work, the first motor drives the driving gear to be meshed with the gear ring, the arc-shaped sliding block annularly slides in the annular rail, and meanwhile the electric push rod stretches out and draws back to adjust the distance between the paint spraying gun and the metal box; by means of the design, the device can cover the top, the bottom and the front side and the rear side of the metal box body in one-time spraying, time is saved, and the spraying machining efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal packaging box processing, and particularly relates to a device for spraying paint on the outer surface of a metal packaging box. Background Art

[0002] Metal packaging boxes are thin-walled packaging containers made of metal sheets for different purposes. They have excellent corrosion resistance, strength and stability, can effectively protect items from the influence of the external environment, are not easy to break, and can withstand greater pressure and impact. In addition, metal packaging boxes also have the advantages of being beautiful, easy to recycle and reuse. The shape and size of metal packaging boxes can be customized according to needs. Common shapes include square, cylindrical, oval, etc. Its application field is very wide. It can be used for the outer packaging of food, medicine, cosmetics and other products, and can also be used for the transportation and storage of various equipment, tools, parts, etc. During the processing of metal packaging boxes, it is often necessary to spray and paint the metal packaging boxes. The outer surface spraying device of the metal packaging box is a device specially used for spraying paint on the outer surface of the metal packaging box.

[0003] The Chinese patent with the publication number "CN207254613U" discloses a tool for spraying paint on the outer surface of a metal packaging box, which includes a platform, a clamping mechanism and a spraying mechanism; the clamping mechanism is used to fix the metal packaging box; the spraying mechanism includes a slide, a sliding table, a nozzle fixing rod and a spraying nozzle; the slide is arranged on one side of the screw fixing groove, and the length direction of the slide is parallel to the length direction of the screw fixing groove; the bottom of the sliding table is embedded in the slide, and forms a slide rail slider structure with the slide; the nozzle fixing rod is fixed on the upper surface of the sliding table, and the spraying nozzle is arranged at the top of the nozzle fixing rod, and the spraying direction of the spraying nozzle is toward the clamping space. The utility model can realize the fixed position of the metal packaging box to be sprayed with paint, and can effectively prevent the operator from directly contacting the paint, reducing the impact of the paint on the health of the operator.

[0004] Although the above-mentioned device can assist in providing a good spraying function during use, during the specific spraying period, it can only spray one side of the outer surface of the metal packaging box at one time, and the metal packaging box generally has multiple surfaces around it. It can be seen that during the overall spraying process, the outer surface of the packaging box needs to be sprayed back and forth multiple times. It can be seen that its overall spraying efficiency is poor, so it needs to be improved. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the utility model is to provide a device for spraying paint on the outer surface of a metal packaging box to solve the problems raised by the background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A device for spraying paint on the outer surface of a metal packaging box comprises a base, a top base is fixedly installed on the top of the base, receiving platforms are fixedly installed on both sides of the top of the top base, a paint spraying mechanism is fixedly installed on the top of the base between the inner sides of the receiving platforms, a shifting mechanism is fixedly installed on both sides of the top base, a driving mechanism is fixedly installed on the top of the shifting mechanism, and a metal box is placed on the top of the receiving platform;

[0008] The paint spraying mechanism includes a bottom bracket, which is fixedly installed in the middle of the top of the top seat, and a ring rail is fixedly installed on the top of the bottom bracket, and an arc-shaped slider is slidably connected inside the ring rail, and a driving component is fixedly installed on the inner side of the arc-shaped slider, and an electric push rod is fixedly installed on one end of the arc-shaped slider, and a paint spray gun is fixedly installed on the end of the electric push rod, and a threaded interface is fixedly installed on the input end of the paint spray gun. By arranging the paint spraying mechanism, the arc-shaped slider can be driven by the driving component to move on the inner side of the ring rail during use of the device, so that the paint spray gun can be flexibly adjusted to rotate in a ring shape, and the metal box can be more comprehensively sprayed by utilizing the telescopic activity of the structural electric push rod, which can improve the overall spraying quality of the device.

[0009] As a preferred technical solution, the driving assembly includes a gear ring and a first motor, the first motor is fixedly installed on the inner side of the arc-shaped slider, a driving gear is fixedly installed on the output end of the first motor, the gear ring is fixedly installed on the inner side of the annular rail, the gear ring and the driving gear are meshingly connected, and by setting the driving assembly, the device can be used during use by starting the first motor to drive the transmission gear to rotate, and the rotation of the transmission gear can cooperate with the gear ring transmission, thereby causing the arc-shaped slider to rotate on the inner side of the annular rail, which can improve the spray adaptation range of the overall spray processing of the device.

[0010] As an optimal technical solution, the adjustment mechanism includes side rails, which are fixedly installed on both sides of the top seat, and a power assembly is fixedly installed on one side of the side rails. A screw rod is rotatably connected to the inside of the side rails, and the threads at both ends of the screw rod are rotated in opposite directions. Both ends of the screw rod are threadedly connected to movable blocks, and the top of the movable block is fixedly connected to the bottom of the driving mechanism. By setting up the adjustment mechanism, the device can be operated by starting the power assembly during use, and the power assembly drives the screw rod to rotate, and the screw rod drives the movable block to slide inside the side rails. The threads at both ends of the screw rod are rotated in opposite directions, which can assist in driving the movable block to move with each other, facilitate the adjustment of the spacing between the two sets of driving mechanisms, and can clamp and adapt metal boxes of different sizes, thereby improving the overall adaptability of the device.

[0011] As an optimal technical solution, the power assembly includes a side frame, which is fixedly mounted on one end of a side rail, and a second motor is fixedly mounted on the outer side of the side frame, and the output end of the second motor passes through the side frame and is fixedly mounted with a transmission pulley, and the other end of the side rail close to the second motor is also rotatably connected to a transmission pulley, and the rear sides of the transmission pulleys are fixedly connected to the front end of the screw rod, and the transmission pulleys are connected by a transmission belt. By setting up the power assembly, the device can be operated by starting the second motor during use, and the second motor drives the transmission pulley to rotate, and the transmission belt is used for auxiliary transmission between the transmission pulleys, so that the two sets of transmission pulleys can be driven to rotate synchronously, which can assist in driving the two sets of screw rods to rotate, and the four sets of movable blocks can be driven synchronously, which can enable the device to flexibly clamp and position metal boxes of different sizes, and can improve the overall adaptability of the device.

[0012] As an optimal technical solution, the driving mechanism includes a fixed frame, which is fixedly installed on the top of the movable block, and a support frame is fixedly installed on the inner end of the top of the fixed frame. Telescopic springs are fixedly installed on the inner side of the upper end of the support frame at equal intervals, and a concave seat is fixedly installed on the inner side of the telescopic spring. A transmission belt is rotatably connected to the inner side of the concave seat, and the inner side of the transmission belt is fitted and connected to the outer surface of the metal box. By setting up the driving mechanism, during use, the transmission belt on the inner side of the concave seat can be moved inwardly through the telescopic spring to resist the transmission belt on the inner side of the concave seat. At this time, the transmission belt contacts the outer side of the metal box. At this time, the transmission belt can be used to operate, which can assist in driving the lateral displacement of the metal box fitted inside, thereby improving the overall adaptability of the device. At the same time, it can automatically drive the displacement of the metal box, and can perform automated spraying processing.

[0013] As a preferred technical solution, support rods are fixedly installed at equal intervals on the outside of the concave seat, and the outer ends of the support rods pass through the support frame. By setting up the support rods, the concave seat can be auxiliary supported and reinforced by the support rods, which can avoid lateral shaking of the telescopic spring and make the concave seat of the device have stronger stability.

[0014] As a preferred technical solution, a reserved groove is provided in the middle of the top seat, leakage grooves are provided on both sides of the top of the top seat, and a collecting bucket is fixedly installed on the bottom of the top seat. By setting the reserved groove, space can be reserved during the rotation of the electric push rod, and the collection bucket can be provided to assist in collecting excess paint liquid sprayed through the design of the collection bucket and the leakage groove, thereby improving the overall ease of use of the device.

[0015] In summary, the utility model mainly has the following beneficial effects:

[0016] First, the second motor can synchronously drive the two sets of transmission pulleys to rotate, and then drive the screw to rotate. The design of the screw allows the movable blocks to move with each other, thereby adjusting the spacing of the driving mechanism, so that the device can adapt to metal boxes of different sizes, realizing the processing capability of metal boxes of various specifications, and having strong overall adaptability;

[0017] Second, the shifting mechanism is used to adjust the mutual displacement of the driving mechanism, and the support frame and the concave seat are driven to move through the activity of the movable block. The transmission track inside the concave seat fits the outer surface of the metal box to achieve clamping and positioning. The operation of the transmission track can push the metal box to move left and right on the receiving table to achieve the automatic spraying processing function. In this way, the entire device can be automatically sprayed without manual adjustment and placement, which improves the efficiency of spraying the outer surface of the metal box;

[0018] Third, the transmission track is used to drive the metal box to slide on the receiving platform. When the box reaches the specified position, the paint spray gun starts working. The first motor drives the driving gear to engage with the gear ring, so that the arc-shaped slider slides in a circle in the annular rail. At the same time, the electric push rod is telescopic to adjust the distance between the paint spray gun and the metal box. This design enables the device to cover the top, bottom, front and back sides of the metal box in one spraying, saving time and improving the efficiency of the spraying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the utility model when viewed from above;

[0022] Figure 4 It is a schematic diagram of the driving mechanism structure of the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the drive assembly of the utility model.

[0024] 1. Base; 2. Top seat; 3. Receiving platform; 4. Metal box; 5. Transfer mechanism; 51. Side rail; 52. Power assembly; 521. Side frame; 522. Second motor; 523. Drive pulley; 53. Screw rod; 54. Movable block; 6. Paint spraying mechanism; 61. Bottom bracket; 62. Ring rail; 63. Arc slider; 64. Electric push rod; 65. Paint spraying gun; 66. Drive assembly; 661. Gear ring; 662. First motor; 663. Drive gear; 67. Threaded interface; 7. Drive mechanism; 71. Fixed frame; 72. Support frame; 73. Telescopic spring; 74. Concave seat; 75. Drive track; 76. Support rod; 8. Reserved groove; 9. Leakage groove; 10. Collecting bucket. DETAILED DESCRIPTION

[0025] Example

[0026] refer to Figures 1 to 5 A metal packaging box outer surface painting device of this embodiment includes a base 1, a top base 2 is fixedly installed on the top of the base 1, receiving platforms 3 are fixedly installed on both sides of the top of the top base 2, a painting mechanism 6 is fixedly installed between the top of the base 1 and the inner side of the receiving platform 3, a shifting mechanism 5 is fixedly installed on both sides of the top base 2, a driving mechanism 7 is fixedly installed on the top of the shifting mechanism 5, and a metal box 4 is placed on the top of a receiving platform 3;

[0027] The paint spraying mechanism 6 includes a bottom bracket 61, which is fixedly installed in the middle of the top of the top seat 2. A ring rail 62 is fixedly installed on the top of the bottom bracket 61. An arc-shaped slider 63 is slidably connected inside the ring rail 62. A driving component 66 is fixedly installed on the inner side of the arc-shaped slider 63. An electric push rod 64 is fixedly installed on one end of the arc-shaped slider 63. A paint spray gun 65 is fixedly installed on the end of the electric push rod 64. A threaded interface 67 is fixedly installed on the input end of the paint spray gun 65. By setting the paint spraying mechanism 6, the arc-shaped slider 63 can be driven by the driving component 66 to move on the inner side of the ring rail 62 during use of the device, so that the paint spray gun 65 can be flexibly adjusted to rotate in a ring shape. The electric push rod 64 is telescopically movable, so that the metal box 4 can be sprayed more comprehensively, which can improve the overall spraying quality of the device.

[0028] refer to Figure 1-Figure 5 The driving assembly 66 includes a gear ring 661 and a first motor 662. The first motor 662 is fixedly installed on the inner side of the arc-shaped slider 63. A driving gear 663 is fixedly installed on the output end of the first motor 662. The gear ring 661 is fixedly installed on the inner side of the annular rail 62. The gear ring 661 and the driving gear 663 are meshed and connected. By setting the driving assembly 66, during use, when the first motor 662 is started, the driving gear 663 rotates accordingly, and the arc-shaped slider 63 is pushed to rotate on the inner side of the annular rail 62 through the coordinated transmission with the gear ring 661. This design not only enhances the spray adaptation range of the device, but also improves the flexibility and efficiency of the overall spray processing. Through such a driving assembly 66 setting, the device can better adapt to metal boxes 4 of different shapes and sizes, and achieve a comprehensive and uniform spraying effect.

[0029] refer to Figure 1-Figure 3The adjustment mechanism 5 includes side rails 51, which are fixedly installed on both sides of the top seat 2. A power assembly 52 is fixedly installed on one side of the side rail 51. A screw rod 53 is rotatably connected inside the side rail 51. The threads at both ends of the screw rod 53 rotate in opposite directions. Both ends of the screw rod 53 are threadedly connected to a movable block 54. The top of the movable block 54 is fixedly connected to the bottom of the driving mechanism 7. The power assembly 52 and the screw rod 53 and other components, the side rails 51 are firmly installed on both sides of the top seat 2 to provide support for the entire mechanism. The power assembly 52 is installed on one side of the side rail 51 and is responsible for providing power for the adjustment mechanism 5. The screw rod 53 is rotatably connected to the inside of the side rail 51, and the threads at both ends rotate in opposite directions. On the contrary, this design enables the screw rod 53 to drive the movable block 54 to slide inside the side rail 51 when it rotates. The movable block 54 is fixedly connected to the bottom of the driving mechanism 7. Therefore, when the movable block 54 moves, the driving mechanism 7 will also move accordingly. When using this device, by starting the power component 52, the screw rod 53 can be driven to rotate, thereby causing the movable block 54 to move relative to each other inside the side rail 51. Since the threads at both ends of the screw rod 53 rotate in opposite directions, this design can ensure that the two sets of driving mechanisms 7 can move synchronously and coordinately when adjusting the spacing. In this way, the device can clamp and adapt to metal boxes 4 of different sizes, greatly improving its overall adaptability.

[0030] refer to Figure 1-Figure 2 The power assembly 52 includes a side frame 521, which is fixedly mounted on one end of a side rail 51. A second motor 522 is fixedly mounted on the outer side of the side frame 521. The output end of the second motor 522 passes through the side frame 521 and is fixedly mounted with a transmission pulley 523. The end of the other side rail 51 close to the second motor 522 is also rotatably connected to the transmission pulley 523. The rear sides of the transmission pulleys 523 are fixedly connected to the front ends of the screw rods 53. The transmission pulleys 523 are connected through transmission belts. By starting the second motor 522, one of the transmission pulleys 523 can be driven to rotate. Since the two transmission pulleys 523 are connected through the transmission belt A transmission connection is made, so when one transmission pulley 523 rotates, the other transmission pulley 523 will also rotate synchronously. This design ensures that the two sets of screw rods 53 can be driven at the same time, thereby realizing the synchronous movement of the four sets of movable blocks 54. Through this working mode of the power component 52, the device can flexibly clamp and position metal boxes 4 of different sizes. Whether it is a large or small metal box 4, it can be adapted by adjusting the position of the movable block 54, thereby improving the overall adaptability of the device. This design not only improves work efficiency, but also reduces the difficulty of operation, making the device more convenient and practical in actual applications.

[0031] refer to Figure 1-Figure 3The driving mechanism 7 includes a fixed frame 71, which is fixedly installed on the top of the movable block 54. A support frame 72 is fixedly installed on the inner end of the top of the fixed frame 71. Telescopic springs 73 are fixedly installed on the inner side of the upper end of the support frame 72 at equal intervals. A concave seat 74 is fixedly installed on the inner side of the telescopic spring 73. A transmission track 75 is rotatably connected to the inner side of the concave seat 74. The inner side of the transmission track 75 is fitted and connected to the outer surface of the metal box 4. The fixed frame 71 is firmly installed on the top of the movable block 54 to provide stable support for the entire driving mechanism 7. The support frame 72 is installed on the inner end of the top of the fixed frame 71 to support and fix other components. Telescopic springs 73 are fixedly installed on the inner side of the upper end of the support frame 72 at equal intervals. These telescopic springs 73 have a certain elasticity and can be extended and retracted as needed to ensure that the transmission track 75 is stably fitted to the metal box 4. The metal box 4 is a metal box 4, and a concave seat 74 is fixedly installed on the inner side of the telescopic spring 73. The design of the concave seat 74 enables it to accommodate and stably support the transmission crawler 75. The transmission crawler 75 is rotatably connected to the inner side of the concave seat 74, and its inner side is tightly fitted with the outer surface of the metal box 4. This design enables the transmission crawler 75 to directly contact the outer surface of the metal box 4, thereby realizing the driving of the metal box 4. When using this device, through the action of the telescopic spring 73, the transmission crawler 75 on the inner side of the concave seat 74 can be tightly fitted on the outer surface of the metal box 4. When the transmission crawler 75 is running, it can assist in driving the metal box 4 to move laterally. This design not only improves the adaptability of the device, enabling it to adapt to metal boxes 4 of different sizes, but also can realize the automatic displacement of the metal box 4, thereby performing automated spraying processing.

[0032] refer to Figure 1-Figure 5 The support rods 76 are fixedly installed at equal intervals on the outside of the concave seat 74, and the outer ends of the support rods 76 pass through the support frame 72. First, the existence of the support rods 76 can assist in supporting the concave seat 74, making it more firmly fixed on the support frame 72. Since the concave seat 74 needs to carry the transmission track 75 and the metal box 4 that fits closely therewith, it must have sufficient stability to ensure the normal operation of the entire drive mechanism 7. The addition of the support rods 76 effectively enhances the supporting force of the concave seat 74 and reduces the possible shaking or deformation thereof during operation. Secondly, the design of the support rods 76 can avoid the lateral shaking of the telescopic spring 73. The telescopic spring 73 may undergo a certain degree of deformation when subjected to force. If there is not enough support and fixation, they may produce lateral shaking, thereby affecting the stability of the concave seat 74 and the transmission track 75. The support rods 76 provide a stable support point for the telescopic spring 73 by passing through the support frame 72, effectively preventing the occurrence of lateral shaking.

[0033] refer to Figure 1-Figure 2, a reserved groove 8 is provided in the middle of the top seat 2, and leakage grooves 9 are provided on both sides of the top of the top seat 2. A collecting bucket 10 is fixedly installed at the bottom of the top seat 2. The reserved groove 8 exists to provide sufficient space when the electric push rod 64 is rotating, ensuring that the electric push rod 64 can work smoothly without interference. The design of the reserved groove 8 takes into account the movement trajectory and required space of the electric push rod 64, ensuring the rationality of the device structure and the realization of the function. In addition, leakage grooves 9 are provided on both sides of the top of the top seat 2. These leakage grooves 9 are used in conjunction with the collecting bucket 10 to form an effective paint liquid collection system. During the spraying process, excess paint liquid or other liquids can flow into the collecting bucket 10 through the leakage grooves 9. The collecting bucket 10 is located at the bottom of the top seat 2, which can conveniently collect these liquids and avoid the scattering and accumulation of paint liquid in the working area. Such a design not only improves the overall cleanliness of the device and reduces the impact of the paint liquid on the working environment, but also facilitates the recovery and treatment of the paint liquid. The collecting bucket 10 can be cleaned regularly to ensure the continuous and efficient operation of the device.

[0034] Principle and advantages of use: By setting the adjustment mechanism 5, the device can be used to start the second motor 522 to drive the transmission pulley 523 to rotate during use. The transmission pulley 523 is connected by a transmission belt transmission, and then the two sets of transmission pulleys 523 can be driven to rotate synchronously. The rotation of the two sets of transmission pulleys 523 can synchronously drive the screw rod 53 to rotate. The threads at both ends of the screw rod 53 have opposite rotation directions. At this time, the movable block 54 can be driven by the screw rod 53 to move relative to each other. The movable blocks 54 are displaced relative to each other, so that the drive mechanism 7 can be adjusted to move relative to each other. By adjusting the spacing of the drive mechanism 7, metal boxes 4 of different sizes can be clamped and positioned adaptively, which can make the device as a whole have strong adaptability and can process metal boxes 4 of different sizes.

[0035] By setting the driving mechanism 7, when the transfer mechanism 5 adjusts the mutual displacement of the driving mechanism 7 during use of the device, the movable blocks 54 can be used to assist in driving the mutual displacement of the support frame 72, and the support frame 72 pushes the concave seat 74 to move relative to each other, and the transmission crawler 75 inside the concave seat 74 is attached to the outer surface of the metal box, which can assist in clamping and positioning the metal box body 4. In this process, the metal box body 4 can be pushed to one side by the operation of the transmission crawler 75, so that the metal box body 4 can be displaced left and right on the receiving platform 3, so that the device has an automatic spraying processing function, and the device as a whole can be automatically sprayed without manual adjustment and placement, which can improve the efficiency of the device as a whole for spraying the outer surface of the metal box body 4;

[0036] By setting the paint spraying mechanism 6, during the use of the device, firstly, the external pipeline for supplying spray paint is connected through the threaded interface 67, and then the metal box 4 is assisted to slide on the receiving platform 3 through the transmission crawler 75. When the metal box 4 moves between the inner sides of the receiving platform 3, the paint spraying gun 65 is turned on to assist the spray head. During the spraying process, the first motor 662 is used to operate, and the driving gear 663 can be driven to rotate by the first motor 662. The driving gear 663 and the gear ring 661 are engaged and transmitted, and the arc-shaped slider 63 can be assisted to slide in a ring shape inside the annular rail 62. During the sliding process, the electric push rod 64 is started to extend and retract, so that the distance between the paint spraying gun 65 and the metal box 4 can be adjusted in real time. By adjusting the rotation of the paint spraying gun 65, the outer surface of the metal box 4 can be sprayed, so that the device can spray the top, bottom and front and back sides of the outer surface of the metal box 4 during one-time spraying, which can save the time required for the spraying process and improve the overall spraying process efficiency of the device.

Claims

1. A device for spraying paint on the outer surface of a metal packaging box, comprising a base (1), characterized in that: A top seat (2) is fixedly mounted on the top of the base (1), receiving platforms (3) are fixedly mounted on both sides of the top of the top seat (2), a paint spraying mechanism (6) is fixedly mounted between the top of the base (1) and the inner side of the receiving platform (3), a shifting mechanism (5) is fixedly mounted on both sides of the top seat (2), a driving mechanism (7) is fixedly mounted on the top of the shifting mechanism (5), and a metal box (4) is placed on the top of the receiving platform (3); The paint spraying mechanism (6) comprises a bottom bracket (61), wherein the bottom bracket (61) is fixedly mounted in the middle of the top of the top seat (2), an annular rail (62) is fixedly mounted on the top of the bottom bracket (61), an arc-shaped slider (63) is slidably connected inside the annular rail (62), a driving assembly (66) is fixedly mounted on the inner side of the arc-shaped slider (63), an electric push rod (64) is fixedly mounted on one end of the arc-shaped slider (63), a paint spraying gun (65) is fixedly mounted on the end of the electric push rod (64), and a threaded interface (67) is fixedly mounted on the input end of the paint spraying gun (65).

2. A metal packaging box outer surface spraying device according to claim 1, characterized in that: The driving assembly (66) comprises a gear ring (661) and a first motor (662), wherein the first motor (662) is fixedly mounted on the inner side of the arc-shaped slider (63), a driving gear (663) is fixedly mounted on the output end of the first motor (662), the gear ring (661) is fixedly mounted on the inner side of the annular rail (62), and the gear ring (661) and the driving gear (663) are meshingly connected.

3. A metal packaging box outer surface spraying device according to claim 1, characterized in that: The adjustment mechanism (5) comprises a side rail (51), wherein the side rail (51) is fixedly mounted on both sides of the top seat (2), a power assembly (52) is fixedly mounted on one side of the side rail (51), a screw rod (53) is rotatably connected inside the side rail (51), the threads at both ends of the screw rod (53) are screwed in opposite directions, both ends of the screw rod (53) are threadedly connected to a movable block (54), and the top of the movable block (54) is fixedly connected to the bottom of the driving mechanism (7).

4. A metal packaging box outer surface spraying device according to claim 3, characterized in that: The power assembly (52) comprises a side frame (521), wherein the side frame (521) is fixedly mounted on one end of a side rail (51), a second motor (522) is fixedly mounted on the outer side of the side frame (521), an output end of the second motor (522) passes through the side frame (521) and is fixedly mounted with a transmission pulley (523), and one end of the other side rail (51) close to the second motor (522) is also rotatably connected to a transmission pulley (523), the rear side of the transmission pulley (523) is fixedly connected to the front end of the screw rod (53), and the transmission pulleys (523) are connected to each other through a transmission belt transmission.

5. The device for spraying paint on the outer surface of a metal packaging box according to claim 1, characterized in that: The driving mechanism (7) comprises a fixed frame (71), wherein the fixed frame (71) is fixedly mounted on the top of the movable block (54), a support frame (72) is fixedly mounted on the inner end of the top of the fixed frame (71), telescopic springs (73) are fixedly mounted at equal intervals on the inner side of the upper end of the support frame (72), a concave seat (74) is fixedly mounted on the inner side of the telescopic spring (73), a transmission crawler (75) is rotatably connected to the inner side of the concave seat (74), and the inner side of the transmission crawler (75) is in contact with the outer surface of the metal box (4).

6. A metal packaging box outer surface spraying device according to claim 5, characterized in that: Support rods (76) are fixedly installed at equal intervals on the outer side of the concave seat (74), and the outer ends of the support rods (76) penetrate the support frame (72).

7. The device for spraying paint on the outer surface of a metal packaging box according to claim 1, characterized in that: A reserved groove (8) is provided in the middle of the top seat (2), drain grooves (9) are provided on both sides of the top of the top seat (2), and a collecting bucket (10) is fixedly installed at the bottom of the top seat (2).

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