A new energy model level forklift painting production line

Abstract

The present application belongs to the technical field of spraying equipment, and particularly relates to a new energy mode forklift coating production line. The present application sets a material conveying unit and a lifting brush coating unit in the cover, so that: 1. not only the surface of the forklift cover can be automatically and evenly and stably coated, but also the uneven parts, especially the recessed parts, can be fully and evenly coated; 2. the structure of the transmission roller has a blocking and anti-falling function, thereby ensuring that the paint on the transmission belt falls, saving the loss of paint.

Description

Technical Field

[0001] This invention belongs to the field of spraying equipment technology, and in particular relates to a new energy mode forklift coating production line. Background Technology

[0002] With the development of new energy technologies and the demand for carbon emission reduction, more and more internal combustion engine engineering vehicles are now using new energy sources such as lithium batteries as power sources. Existing new energy forklifts use multiple lithium battery packs combined for power supply. These new energy forklifts install multiple lithium battery packs directly at the bottom of the forklift, which has many advantages such as small space occupation and lower center of gravity.

[0003] Forklift box covers are made of iron, which has good hardness and protects the components inside the box. However, iron rusts when in contact with water, so the forklift box cover needs to be painted for protection. Currently, most painting methods are manual, where workers use a handheld spray gun to apply paint to the surface of the forklift box cover. However, this method cannot achieve a smooth and even paint finish on the uneven surface of the forklift box cover, and it requires manual operation.

[0004] In other words, a device that can automatically and evenly spray paint onto uneven forklift box cover surfaces aligns with the development concept of automated coating production lines.

[0005] For example, Chinese utility model patent with patent publication number CN218796659U and publication date 20230407 discloses a forklift box cover processing and spraying device, including a cover body, a paint box installed on the top of the cover body, a spring installed inside the cover body, an auxiliary frame connected to one end of the spring, a rotating shaft installed inside the auxiliary frame, a rotating cylinder sleeved on the outer ring of the rotating shaft, a paint brush belt sleeved on the outer ring of the rotating cylinder, a support plate installed on one side of the cover body, a motor installed on the support plate, and a scraper installed inside one of the auxiliary frames.

[0006] The paint brush belt in this utility model patent initially conforms to the development concept of automated coating production line, mainly reflected in the following: the paint box sprays paint onto the surface of the paint brush belt through the discharge pipe, the rotating drum transfers the paint on the paint brush belt onto the forklift box cover by rotation, and at the same time the scraper hangs off the excess paint for reuse.

[0007] However, this side column structure still has at least the following shortcomings in actual use, which are also the technical problems that this invention aims to solve: The painting effect of the paint tape on the forklift box cover depends on the imprint of the drum. However, when there are recessed areas on the surface of the forklift box cover that are smaller than the imprint area of ​​the drum, the drum cannot cover the inner wall of the recessed area with the paint tape, and manual touch-up is required.

[0008] Therefore, in summary, there is an urgent need for a device that can automatically spray paint forklift lids, especially one that can overcome the spraying limitations of recessed areas on the lids, so as to conform to the development concept of automated coating production lines. Summary of the Invention

[0009] This invention provides a new energy mode-level forklift painting production line, which, by setting a material conveying unit and a lifting painting unit inside the cover, enables: 1. not only to automatically, evenly, and stably paint the surface of the forklift cover, but also to fully and evenly paint uneven areas, especially recessed areas; 2. the structure of the transmission roller has a blocking and anti-drop function, thereby ensuring that the paint conveyed on the conveyor belt does not fall off, saving paint waste.

[0010] The technical solution adopted by the present invention to solve the above problems is: a new energy mode forklift painting production line, the structure of which includes a cover, a painting structure disposed on the top of the cover, a material conveying unit disposed in the cover and located at the lower end of the painting structure and used to receive the paint sprayed by the painting structure, and a lifting painting unit slidably disposed in the cover and used to transfer the paint on the material conveying unit to the surface of the forklift cover by acting on the material conveying unit.

[0011] A further preferred technical solution is that the material conveying unit includes at least two drive rollers that are rotatably disposed within the cover body and are parallel to each other, and a conveyor belt disposed on the drive rollers and moving under the drive of the drive rollers.

[0012] A further preferred technical solution is that the lifting and painting unit includes a drive cylinder disposed on the cover and driven in a vertical direction, a mounting frame disposed on the output end of the drive cylinder, and a plurality of painting rods detachably mounted on the mounting frame and acting on the side of the conveyor belt near the forklift box cover.

[0013] A further preferred technical solution is that the lifting painting unit further includes multiple mounting through holes for mounting the painting rod on the mounting frame, a limiting block at the upper end of the painting rod, and a support spring sleeved on the painting rod and connected at both ends to the surfaces of the mounting frame and the limiting block, respectively.

[0014] A further preferred technical solution is that the lifting and painting unit further includes an adjusting column connected to the output end of the drive cylinder, arranged parallel to the mounting frame, and acting on the side of the conveyor belt away from the forklift box cover.

[0015] A further preferred technical solution is that: the transmission roller located at the front end of the transmission direction of the conveyor belt includes a rotating shaft connected to the drive structure, and a plurality of rotating plates distributed on the rotating shaft and radially distributed.

[0016] A further preferred technical solution is that the transmission roller located at the front end of the transmission direction of the conveyor belt further includes a channel disposed in the rotating shaft, a plurality of air holes disposed on the rotating shaft and communicating with the channel, and an air intake pipe rotatably connected to the rotating shaft and communicating with the channel.

[0017] A further preferred technical solution is that the transmission roller located at the front end of the transmission direction of the conveyor belt also includes two blocking plates disposed at both ends of the rotating shaft.

[0018] A further preferred technical solution is that the lifting painting unit also includes the end of the painting rod and an arc-shaped protrusion acting on the conveyor belt.

[0019] A further preferred technical solution is that the surface of the adjusting column near the conveyor belt is an arc-shaped convex surface. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the material conveying unit in this invention.

[0022] Figure 3 This is a schematic diagram of the lifting and lowering painting unit in this invention.

[0023] Figure 4 This is a partial structural diagram of the lifting and lowering painting unit in this invention.

[0024] Figure 5 This is a top-down view of the paint brush rod and the conveyor belt in this invention.

[0025] Figure 6 This is a schematic diagram of one structure of the transmission roller in this invention.

[0026] Figure 7 This is a schematic diagram of the operation of the transmission roller in this invention.

[0027] Figure 8 This is a schematic diagram of a forklift box cover according to the present invention.

[0028] The meanings of the markings in the diagram are as follows: Forklift box cover a; 11. Cover body; 12. Painted structure; Material conveying unit 1; Lifting and painting unit 2; Drive roller 101, conveyor belt 102; Rotating shaft 101a, rotating plate 101b, channel 101c, air hole 101d, air intake pipe 101e, blocking plate 101f; Drive cylinder 201, mounting frame 202, paint brush rod 203, mounting through hole 204, limit block 205, support spring 206, adjusting column 207, arc-shaped protrusion 208. Detailed Implementation

[0029] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0030] As attached Figure 1-8 As shown, a new energy mode forklift painting production line includes a cover 11, a painting structure 12 disposed on the top of the cover 11, a material conveying unit 1 disposed inside the cover 11 and located at the lower end of the painting structure 12 for receiving the paint sprayed by the painting structure 12, and a lifting painting unit 2 slidably disposed inside the cover 11 and used to transfer the paint on the material conveying unit 1 to the surface of the forklift box cover a by acting on the material conveying unit 1.

[0031] In this embodiment, the cover 11 is generally composed of 5 connected plates, with an open lower end for spraying paint onto the forklift box cover a. The paint spraying structure 12 is prior art, and can be found in the paint tank, feed pump, conduit, discharge pipe, and stirring roller structures disclosed in patent publication number CN218796659U, so it will not be described in detail in this embodiment. The slightly different structure lies in the number of feed pumps; in this embodiment, 3 to 5 pumps are preferred to enhance the uniformity of the paint on the feed unit 1.

[0032] The material conveying unit 1 includes at least the function of receiving paint output from the painting structure 12 and conveying the paint to the upper end of the forklift box cover a to be painted. The painting unit 2 slides in a vertical direction and includes at least the function of pressing the paint on the material conveying unit 1 onto the surface of the forklift box cover a to be painted by pressing down, thereby painting the surface of the forklift box cover a.

[0033] The material conveying unit 1 includes at least two drive rollers 101 that are rotatably disposed inside the cover 11 and parallel to each other, and a conveyor belt 102 disposed on the drive rollers 101 and moving under the drive of the drive rollers 101.

[0034] In this embodiment, there are two drive rollers 101, and the conveyor belt 102 is a mesh film, which is tensioned by the two drive rollers 101. The advantages of this arrangement are: first, it reduces the number of transfer drums in existing technologies; second, the vertically moving lifting and conveying unit 2 enables the material feeding function of the transfer drums in existing technologies, increasing the pressure between the conveyor belt 102 and the surface of the forklift box cover a, thereby improving the uniformity and stability of the paint application; third, the vertically moving lifting and conveying unit 2 is easy to adjust in size, thus ensuring uniform paint application to the recessed areas of the forklift box cover a surface.

[0035] The lifting and painting unit 2 includes a drive cylinder 201 mounted on the cover 11 and driven vertically, a mounting frame 202 mounted on the output end of the drive cylinder 201, and a plurality of painting rods 203 detachably mounted on the mounting frame 201 and acting on the side of the conveyor belt 102 near the forklift box cover a.

[0036] In this embodiment, the mounting frame 201 is located above and parallel to the conveyor belt 102 near the surface of the forklift box cover a. Multiple paint brushes 203 are distributed at equal intervals, forming a "dot matrix" feeding structure. This structure can paint not only flat surfaces but also the inner walls of recessed areas. This is because the dot matrix distribution of the paint brushes 203 breaks down the painting surface into smaller parts. Regardless of the size of the recessed area, as long as a single paint brush or part of the paint brushes can enter the recessed area, the conveyor belt 102 can be pushed into the recessed area, allowing the paint on the conveyor belt 102 to be applied to the inner walls of each recessed area.

[0037] The lifting painting unit 2 also includes a plurality of mounting through holes 204 for mounting the painting rod 203 on the mounting frame 202, a limiting block 205 on the upper end of the painting rod 203, and a support spring 206 sleeved on the painting rod 203 and connected at both ends to the surfaces of the mounting frame 202 and the limiting block 205, respectively.

[0038] In this embodiment, the support spring 206 acts on the limiting block 205, causing the paint brush rod 203 to tend to move downwards under the limitation of the mounting through hole 204. This ensures that the lower end of the paint brush rod 203 can fully press against the conveyor belt 102 and the surface to be painted, improving the painting effect. In addition, the overall structure also allows the paint brush rod 203 to have a compressible function within a certain range, thereby avoiding the problem that the paint brush rod 203 located outside the recessed area will not have excessive pressure on the surface when part of the paint brush rod 203 enters the recessed area.

[0039] The lifting and painting unit 2 also includes an adjusting column 207 connected to the output end of the drive cylinder 201, arranged parallel to the mounting frame 202, and acting on the side of the conveyor belt 103 away from the forklift box cover a.

[0040] In this embodiment, the adjusting column 207 is located at the upper end of the mounting frame 202 and at the lower end of the conveyor belt 103, away from the forklift box cover a. This arrangement is intended to allow the adjusting column 207 to lift the conveyor belt 102 when the drive cylinder 201 raises the mounting frame 202, creating a slope-shaped section of the conveyor belt 102 at the lower end of the painting structure 12. With the conveyor belt 101 moving at a constant speed, this slope-shaped section stays on the painting structure 12 for a longer period, thus receiving more paint. After loading, the adjusting column 207 returns to its original position. Then, as the slope-shaped section of the conveyor belt 102 carries more paint to the recessed area on the surface of the forklift box cover a, the paint brush 203 is driven to fill the recessed area with even more paint, overcoming the problem in existing technologies where the paint layer in the recessed area is thinner than on a smooth surface. In fact, the coating in the recessed area should be more robust, as it is more prone to water and dust accumulation, leading to rust and other problems.

[0041] The transmission roller 101 located at the front end of the transmission direction of the conveyor belt 102 includes a rotating shaft 101a connected to the drive structure, and a plurality of rotating plates 101b distributed on the rotating shaft 101a and radially distributed.

[0042] In this embodiment, the purpose of the drive roller 101 located at the front end of the conveyor belt 102 in the conveying direction is to take into account that in the prior art, the roller that drives the conveyor belt is generally a smooth roller. However, a smooth roller does not have the function of helping the paint to adhere to the conveyor belt. In this embodiment, a solution is adopted to increase the amount of paint in the concave area. If a smooth roller is used directly, the paint is easily lost, even more than half, during the conveying process, especially at the corners. Therefore, this device adopts a structure of rotating shaft 101a combined with multiple rotating plates 101b to form a dynamic surface with undulations when rotating, which helps most of the paint to stay on the conveyor belt.

[0043] The transmission roller 101 located at the front end of the transmission direction of the conveyor belt 102 also includes a channel 101c disposed in the rotating shaft 101a, a plurality of air holes 101d disposed on the rotating shaft 101a and communicating with the channel 101c, and an air intake pipe 101e rotatably connected to the rotating shaft 101a and communicating with the channel 101c.

[0044] In this embodiment, the suction pipe 101e is connected to an external fan to provide suction, and the suction pipe 101e does not rotate with the rotating shaft 101a to avoid the suction pipe 101e getting tangled. The purpose of this arrangement is to further improve the technical effect of retaining the paint on the conveyor belt 102.

[0045] The drive roller 101 located at the front end of the conveyor belt 102 in the transmission direction also includes two blocking plates 101f disposed at both ends of the rotating shaft 101a. The function of the blocking plates 101f is to prevent paint from falling off the two sides of the conveyor belt 102.

[0046] The lifting painting unit 2 also includes an arc-shaped protrusion 208 at the end of the painting rod 203 and acting on the conveyor belt 102. The arc-shaped protrusion 208 is used to reduce wear between the painting rod 203 and the conveyor belt 102 and the surface of the workpiece to be painted.

[0047] The surface of the adjusting post 207 near the conveyor belt 102 is an arc-shaped raised surface. This design is intended to reduce wear between the adjusting post 207 and the conveyor belt 102.

[0048] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of the present invention. These are non-inventive modifications and are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. A new energy mode forklift painting production line, comprising a cover (11) and a painting structure (12) disposed on the top of the cover (11), characterized in that: It also includes a material conveying unit (1) disposed inside the cover (11) and located at the lower end of the spraying structure (12) for receiving the paint sprayed by the spraying structure (12), and a lifting painting unit (2) slidably disposed inside the cover (11) and used to transfer the paint on the material conveying unit (1) to the surface of the forklift box cover (a) by acting on the material conveying unit (1). The material conveying unit (1) includes at least two drive rollers (101) that are rotatably disposed inside the cover (11) and parallel to each other, and a conveyor belt (102) disposed on the drive rollers (101) and moving under the drive of the drive rollers (101). The lifting painting unit (2) includes a drive cylinder (201) disposed on the cover (11) and driven in a vertical direction, a mounting frame (202) disposed on the output end of the drive cylinder (201), and a plurality of painting rods (203) detachably mounted on the mounting frame (202) and acting on one side of the conveyor belt (102) near the forklift box cover (a). The lifting painting unit (2) also includes a plurality of mounting through holes (204) for mounting the painting rod (203) on the mounting frame (202), a limiting block (205) on the upper end of the painting rod (203), and a support spring (206) sleeved on the painting rod (203) and connected at both ends to the surfaces of the mounting frame (202) and the limiting block (205) respectively. The lifting and painting unit (2) also includes an adjusting column (207) connected to the output end of the drive cylinder (201), arranged parallel to the mounting frame (202), and acting on the side of the conveyor belt (102) away from the forklift box cover (a). The surface of the adjusting column (207) near the conveyor belt (102) is an arc-shaped convex surface. The adjusting column (207) is located at the upper end of the mounting bracket (202) and at the lower end of the conveyor belt (102) away from the forklift box cover (a). When the drive cylinder (201) lifts the mounting bracket (202) upwards, the adjusting column (207) pushes up the conveyor belt (102), causing the portion of the conveyor belt (102) located at the lower end of the painting structure (12) to form a slope shape. With the conveyor belt (102) moving at a constant speed, the slope shape stays on the painting structure (12) for a longer period, thus receiving more paint. After the paint loading is complete, the adjusting column (207) returns to its original position. When the slope-shaped section of the conveyor belt (102) carries more paint to the recessed area on the surface of the forklift box cover (a), the paint brush rod (203) is then driven to fill the recessed area with more paint. The coating in recessed areas should be thicker because these areas are more prone to water and dust accumulation, which can easily lead to rust.

2. The new energy mode-level forklift painting production line according to claim 1, characterized in that: The transmission roller (101) located at the front end of the transmission direction of the transmission belt (102) includes a rotating shaft (101a) connected to the drive structure, and a plurality of rotating plates (101b) distributed on the rotating shaft (101a) and radially distributed.

3. The new energy mode-level forklift painting production line according to claim 2, characterized in that: The transmission roller (101) located at the front end of the transmission direction of the conveyor belt (102) further includes a channel (101c) disposed in the rotating shaft (101a), a plurality of air holes (101d) disposed on the rotating shaft (101a) and communicating with the channel (101c), and an air intake pipe (101e) rotatably connected to the rotating shaft (101a) and communicating with the channel (101c).

4. The new energy mode-level forklift painting production line according to claim 2, characterized in that: The transmission roller (101) located at the front end of the transmission direction of the transmission belt (102) also includes two blocking plates (101f) disposed at both ends of the rotating shaft (101a).

5. The new energy mode-level forklift painting production line according to claim 1, characterized in that: The lifting painting unit (2) also includes an arc-shaped protrusion (208) at the end of the painting rod (203) and acting on the conveyor belt (102).

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