Electrophoresis and powder spraying production line

Abstract

An electrophoresis and powder spraying production line comprises a conveying mechanism, a lower-layer production line and an upper-layer production line, the conveying mechanism is suspended above the lower-layer production line and the upper-layer production line, and the lower-layer production line comprises a workpiece feeding area, a pretreatment mechanism, an electrophoresis device and a post-cleaning mechanism which are sequentially arranged. The upper-layer production line comprises a first curing device, a powder spraying mechanism, a second curing device and a workpiece discharging area which are sequentially arranged, and the workpiece feeding area and the workpiece discharging area are in butt joint through a conveying mechanism. According to the electrophoresis and powder spraying production line, oil and impurity removal, clean water cleaning, vitrification (phosphorization), clean water cleaning, electrophoresis, pure water cleaning, electrophoresis post-curing treatment, powder spraying post-curing treatment and electrophoretic paint and powder curing treatment are sequentially carried out on a workpiece after the workpiece is stamped and bent, so that an anti-rust film is attached to the hole wall of the workpiece; the rust-proof film at the bent part of the workpiece cannot be damaged or fall off due to bending, so that the product rusting is avoided, and the product quality is greatly improved; and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrophoresis and powder spraying, in particular to an electrophoresis and powder spraying production line. Background Art

[0002] At present, in daily life, various iron products or iron box shells placed outdoors are generally made of electrolytic iron plates or galvanized iron plates with better rust resistance through stamping in order to enhance their anti-corrosion ability. However, when stamping, the plates generally need to be punched and pressed. After punching, there is no electrolytic film or galvanized film at the incision position. Although the surface is coated with powder spraying, the incision is more prone to corrosion and rust, which then spreads to the entire plate. In addition, after the plate is stamped, it is often necessary to perform a bending process. After the plate is bent, the anti-rust film or galvanizing at the bending position is easily damaged or Falling off also makes it easy to corrode and rust here, which then spreads to the entire plate. In order to avoid the above problems, an existing production plan is to use lower cold-rolled plates for stamping and bending. After the processing is completed, the product parts are subjected to electrophoresis and powder spraying and other processes respectively. However, the equipment of this plan is complex and occupies a large area. Moreover, the two processes of electrophoresis and powder spraying need to be completed in different production areas or two independent production lines. The workpiece transportation is troublesome, resulting in low production efficiency and high production cost, and it is impossible to produce low-cost, high-quality, and cost-effective products.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] The utility model aims to provide an electrophoresis and powder spraying production line with simple and reasonable structure, small footprint, high production efficiency, low cost and strong practicality, so as to overcome the shortcomings of the prior art.

[0005] An electrophoresis and powder spraying production line designed for this purpose is characterized in that it includes a conveying mechanism, a lower production line and an upper production line, the conveying mechanism is suspended above the lower production line and the upper production line, the lower production line includes an upper work area, a pre-treatment mechanism, an electrophoresis device and a post-cleaning mechanism arranged in sequence, the upper production line includes a first curing device, a powder spraying mechanism, a second curing device and a lower work area arranged in sequence, the upper work area and the lower work area are connected by the conveying mechanism, and the workpiece is conveyed from the upper work area to the pre-treatment mechanism, the electrophoresis device, the post-cleaning mechanism, the first curing device, the powder spraying mechanism, the second curing device and the lower work area in sequence through the conveying mechanism.

[0006] The pre-treatment mechanism includes a pre-deoiling device, a deoiling device, a first clean water spraying device, a ceramic device or a phosphating device, and a second clean water spraying device which are arranged in sequence. The second clean water spraying device and the electrophoresis device are arranged in sequence. The workpiece is transported from the loading area to the pre-deoiling device, the deoiling device, the first clean water spraying device, the ceramic device or the phosphating device, the second clean water spraying device and the electrophoresis device in sequence through the conveying mechanism.

[0007] The post-cleaning mechanism comprises more than one pure water spraying device which are arranged in sequence, and the pure water spraying device comprises a pure water tank for placing the workpiece and a plurality of pure water spraying heads arranged above the pure water tank.

[0008] The electrophoresis device includes an electrophoresis tank for electrophoresing a workpiece.

[0009] The first curing device and the second curing device are curing ovens.

[0010] The powder spraying mechanism includes more than one powder spraying device which are arranged in sequence. The powder spraying device includes a manual powder spraying area and an automatic powder spraying area. The manual powder spraying area is respectively arranged on both sides of the automatic powder spraying area. The automatic powder spraying area is provided with an automatic powder spraying device.

[0011] The conveying mechanism comprises a conveying chain assembly and a hook for hanging workpieces, and the hook is installed below the conveying chain assembly.

[0012] The upper piece area, the pre-treatment mechanism, the electrophoresis device and the post-cleaning mechanism are arranged in a circuitous manner, and the first curing device, the powder spraying mechanism, the second curing device and the lower piece area are arranged in a circuitous manner.

[0013] The pre-oil removal device includes a pre-oil removal tank and a plurality of spray assemblies arranged above the pre-oil removal tank. The oil removal device is an oil immersion tank used for degreasing immersed workpieces; the ceramic device is a ceramic immersion tank used for ceramicizing immersed workpieces, or the phosphating device is a phosphating immersion tank used for phosphating immersed workpieces.

[0014] The first clean water spray device and the second clean water spray device both include a clean water tank for placing workpieces and a plurality of clean water spray heads arranged above the clean water tank.

[0015] The electrophoresis and powder spraying production line of the utility model sequentially removes oil and impurities, cleans with water, ceramicizes (phosphates), cleans with water, electrophoreses, cleans with pure water, solidifies electrophoretic paint after electrophoresis, and solidifies powder after powder spraying after stamping and bending the workpiece, so that the workpiece is covered with an anti-rust film at 360 degrees, and the anti-rust film at the bending part of the workpiece will not be damaged or fall off due to bending, thereby causing the product to rust, greatly improving the product quality; the electrophoresis and powder spraying production line includes an upper and lower production line, and the workpiece is transported between the upper and lower production lines by a conveying mechanism, and the hook of the conveying mechanism will return to the lower production line after the workpiece is unloaded, so as to continuously circulate and transport, making the workpiece transportation convenient, greatly improving the production efficiency, and making the upper and lower production lines a whole, not in different production areas, nor two independent production lines, making the equipment structure simpler and more compact, occupying a smaller area, and reducing the equipment cost. At the same time, the overall protection of the workpiece by using electrophoresis paint is more perfect than the protection of the electroplating layer, and more cost-saving than powder spraying, because powder spraying cannot be evenly distributed on the surface of the workpiece, while the electrophoresis layer can be thin and evenly distributed on the surface of the workpiece. In the utility model, after the electrophoretic paint of the workpiece is cured, powder spraying is performed on the surface of the workpiece to cover the processing scratches of the workpiece and decorate the surface of the workpiece, and electrophoresis is only used as a surface pretreatment process for powder spraying; only a small amount of powder material is needed to achieve the purpose of surface corrosion protection and decoration of the workpiece; the product quality and cost produced by this electrophoresis + spraying composite process are better in quality and lower in cost than the single thickening coating spraying process. Therefore, low-cost cold plates can be used to replace high-cost electroplating plates to produce outdoor products at low cost. The utility model uses scientific process adjustment and the integration of multiple processes to produce huge economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a layout diagram of the lower production line in one embodiment of the utility model.

[0017] Figure 2 This is a layout diagram of the upper production line in one embodiment of the utility model.

[0018] Figure 3 This is a layout diagram of the electrophoresis and powder spraying production line in one embodiment of the utility model. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] See also Figure 1-Figure 3The electrophoresis and powder spraying production line comprises a conveying mechanism A, a lower production line B and an upper production line C. The conveying mechanism A is suspended above the lower production line B and the upper production line C. The lower production line B comprises an upper work area 1, a pre-treatment mechanism 2, an electrophoresis device 3 and a post-cleaning mechanism 4 which are arranged in sequence. The upper production line C comprises a first curing device 5, a powder spraying mechanism 6, a second curing device 7 and a lower work area 8 which are arranged in sequence. The upper work area 1 and the lower work area 8 are connected by the conveying mechanism A. The workpiece is conveyed from the upper work area 1 to the pre-treatment mechanism 2, the electrophoresis device 3, the post-cleaning mechanism 4, the first curing device 5, the powder spraying mechanism 6, the second curing device 7 and the lower work area 8 in sequence by the conveying mechanism A. The workpiece is an iron plate for the outer shell of an outdoor product, which is conveyed to the upper work area 1 after being stamped and bent.

[0021] The pre-treatment mechanism 2 includes a pre-oil removal device 9, an oil removal device 10, a first clean water spray device 11, a ceramic device 12 or a phosphating device, and a second clean water spray device 13, which are arranged in sequence. The second clean water spray device 13 and the electrophoresis device 3 are arranged in sequence. The workpiece is transported from the loading area 1 to the pre-oil removal device 9, the oil removal device 10, the first clean water spray device 11, the ceramic device 12 or the phosphating device, the second clean water spray device 13 and the electrophoresis device 3 in sequence through the conveying mechanism A.

[0022] The post-cleaning mechanism 4 includes more than one pure water spray device 14 which are arranged in sequence. The pure water is water that has been purified (reverse osmosis technology, etc.). In this embodiment, three pure water spray devices 14 are arranged in sequence. The pure water spray device 14 includes a pure water tank for placing the workpiece and a plurality of pure water spray heads arranged above the pure water tank. The post-cleaning mechanism 4 is used to wash away excess electrophoretic solution on the workpiece.

[0023] The electrophoretic device 3 includes an electrophoretic tank for electrophoretic workpieces. The workpieces are immersed in a solution containing epoxy resin, and the electrophoretic coating is applied at the positive and negative electrodes. When an electric current is applied, the charged coating ions move to the cathode and react with the alkaline generated on the cathode surface to form insoluble substances, which are deposited on the surface of the workpiece to form an anti-rust film. The electrophoretic device 3 and the post-cleaning mechanism 4 can be provided in one group or two groups, depending on the material, shape and size of the workpiece.

[0024] The first curing device 5 and the second curing device 7 are curing furnaces; the first curing device 5 is used for curing the anti-rust film of the workpiece after electrophoresis and for curing the workpiece before powder spraying. Two different curing treatments can be performed on the workpiece through one curing device, which effectively reduces the space occupied by the equipment and reduces the equipment cost. Traditionally, the curing of the anti-rust film of the workpiece after electrophoresis and the curing treatment of the workpiece before powder spraying need to be completed in two curing devices respectively, which occupies a large space and has a high cost.

[0025] The powder spraying mechanism 6 includes more than one powder spraying device 15 which are arranged in sequence, and the powder spraying device 15 includes a manual powder spraying area 16 and an automatic powder spraying area 17, the manual powder spraying area 16 is respectively arranged on both sides of the automatic powder spraying area 17, and the automatic powder spraying area 17 is provided with an automatic powder spraying device 18; the manual powder spraying area 16 sprays the workpiece with powder spraying components by manual use, and the workpiece powder spraying is generally sprayed by the automatic powder spraying device 18. If it is difficult to spray some parts of the workpiece, and the automatic powder spraying device 18 cannot be completed, then the workpiece is sprayed manually; the powder spraying device 15 of the present embodiment is provided with two, and the two powder spraying devices 15 are respectively and simultaneously sprayed on different workpieces to improve the powder spraying efficiency; the principle of the powder spraying process is: a high-voltage corona discharge electric field is formed between the spray gun and the workpiece, and when the powder particles are ejected from the spray gun mouth through the discharge area, a large number of electrons are supplemented to become negatively charged particles, which are adsorbed to the positively charged workpiece under the action of electrostatic attraction.

[0026] The conveying mechanism A includes a conveying chain assembly and a hook for hanging the workpiece, the hook is installed under the conveying chain assembly, the conveying chain assembly includes a motor 19, a transmission component and a conveying chain 20, the motor 19 is driven and connected to the conveying chain 20 through the transmission component, the motor 19 drives the conveying chain 20 to move through the transmission component, and then conveys the hook hanging the workpiece; a lifting component (such as a motor and a pulley assembly) is provided on the conveying chain 20, the lifting component is connected to the hook, and the lifting component can lift the hook to place the workpiece in each slot and remove the workpiece from each slot.

[0027] The upper piece area 1, the pre-treatment mechanism 2, the electrophoresis device 3 and the post-cleaning mechanism 4 are arranged in a circuitous manner, and the first curing device 5, the powder spraying mechanism 6, the second curing device 7 and the lower piece area 8 are arranged in a circuitous manner. This design makes the structure of the lower production line B and the upper production line C more compact and reduces the occupied space of the production line.

[0028] The pre-oil removal device 9 includes a pre-oil removal tank and a plurality of spray assemblies arranged above the pre-oil removal tank. The oil removal device 10 is an oil immersion tank for degreasing the immersed workpiece. Both the pre-oil removal device 9 and the oil removal device 10 use a degreasing agent. The pre-oil removal device 9 is used to remove most of the oil and impurities on the workpiece that are easy to remove, and the oil removal device 10 is used to remove a small part of the oil and impurities on the workpiece that are difficult to remove. The ceramic device 12 is a ceramic immersion tank for ceramic immersion of the workpiece, or the phosphating device is a phosphating immersion tank for phosphating the immersed workpiece. The ceramic device 12 uses a ceramic agent, or the phosphating device uses a phosphating agent, which can improve the hardness, wear resistance and corrosion resistance of the workpiece surface.

[0029] The first clean water spray device 11 and the second clean water spray device 13 both include a clean water tank for placing workpieces and a plurality of clean water spray heads arranged above the clean water tank. The first clean water spray device 11 is used to wash away the degreasing agent on the workpiece, and the second clean water spray device 13 is used to wash away the ceramic (phosphating) agent on the workpiece; in this embodiment, two first clean water spray devices 11 and second clean water spray devices 13 are arranged in sequence.

[0030] The electrophoresis and powder spraying process of the workpiece adopts the electrophoresis and powder spraying production line, including the following steps:

[0031] a. The workpiece is transported from the loading area 1 to the pre-processing mechanism 2 through the conveying mechanism A;

[0032] b. The pre-degreasing device 9, the degreasing device 10, the first clean water spraying device 11, the ceramic device 12 or the phosphating device, and the second clean water spraying device 13 of the pre-treatment mechanism 2 sequentially spray the workpiece with a degreasing agent, immerse the workpiece in degreasing agent, spray and clean water, immerse the workpiece in ceramic agent or immerse the workpiece in phosphating agent, and spray and clean water;

[0033] c. The workpiece is transported to the electrophoresis device 3 through the transport mechanism A, and the electrophoresis device 3 performs electrophoresis on the workpiece to form an anti-rust film on the surface of the workpiece;

[0034] d. The workpiece is transported to the post-cleaning mechanism 4 through the conveying mechanism A, and the post-cleaning mechanism 4 uses pure water to spray and clean the workpiece;

[0035] e. The workpiece is transported to the first curing device 5 by the transport mechanism A, and the workpiece is subjected to a post-electrophoresis curing treatment and a pre-powder spraying curing treatment by the first curing device 5;

[0036] f. The workpiece is transported to the powder spraying mechanism 6 through the conveying mechanism A, and the powder spraying mechanism 6 automatically and / or manually sprays powder on the surface of the workpiece to apply color paint to the workpiece;

[0037] g. The workpiece is transported to the second curing device 7 by the transport mechanism A, and the second curing device 7 cures the paint on the surface of the workpiece so that the paint forms a uniform film layer;

[0038] h. The workpiece is transported to the unloading area 8 by the conveying mechanism A for unloading; after the workpiece is unloaded, the empty hook of the conveying mechanism A will be transported to the loading area 1 of the lower production line B again, and then the empty hook will be loaded with the workpiece to be electrophoresed and powder-sprayed, and then transported, and the above process will be repeated continuously.

[0039] In step b, the degreasing agent is sprayed for 30 seconds, the two first clean water spraying devices 11 are respectively sprayed with clean water for 30 seconds, the two second clean water spraying devices 13 are respectively sprayed with clean water for 30 seconds, the degreasing agent is immersed in oil removal for 5 minutes, the ceramic agent is immersed in ceramics for 2 minutes or the phosphating agent is immersed in phosphating for 2 minutes;

[0040] In step c, the workpiece is electrophoresed for 1.5 min;

[0041] In step d, the workpiece is spray cleaned for 90 seconds, that is, the three pure water spray devices 14 spray clean the workpiece with pure water for 30 seconds respectively.

[0042] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An electrophoresis and powder spraying production line, characterized in that: The invention comprises a conveying mechanism (A), a lower production line (B) and an upper production line (C), wherein the conveying mechanism (A) is suspended above the lower production line (B) and the upper production line (C), wherein the lower production line (B) comprises an upper workpiece area (1), a pre-treatment mechanism (2), an electrophoresis device (3) and a post-cleaning mechanism (4) arranged in sequence, and the upper production line (C) comprises a first curing device (5), a powder spraying mechanism (6), a second curing device (7) and a lower workpiece area (8) arranged in sequence, wherein the upper workpiece area (1) and the lower workpiece area (8) are connected to each other through the conveying mechanism (A), and the workpiece is conveyed from the upper workpiece area (1) to the pre-treatment mechanism (2), the electrophoresis device (3), the post-cleaning mechanism (4), the first curing device (5), the powder spraying mechanism (6), the second curing device (7) and the lower workpiece area (8) in sequence through the conveying mechanism (A).

2. The electrophoresis and powder spraying production line according to claim 1 is characterized in that: The pre-treatment mechanism (2) comprises a pre-degreasing device (9), a degreasing device (10), a first clean water spraying device (11), a ceramic device (12) or a phosphating device, and a second clean water spraying device (13) which are arranged in sequence. The second clean water spraying device (13) and the electrophoresis device (3) are arranged in sequence. The workpiece is transported from the loading area (1) to the pre-degreasing device (9), the degreasing device (10), the first clean water spraying device (11), the ceramic device (12) or the phosphating device, the second clean water spraying device (13) and the electrophoresis device (3) in sequence through the transport mechanism (A).

3. The electrophoresis and powder spraying production line according to claim 1 is characterized in that: The post-cleaning mechanism (4) comprises more than one pure water spraying device (14) which are arranged in sequence, and the pure water spraying device (14) comprises a pure water tank for placing the workpiece and a plurality of pure water spraying heads arranged above the pure water tank.

4. The electrophoresis and powder spraying production line according to claim 1 is characterized in that: The electrophoresis device (3) comprises an electrophoresis tank for electrophoresing a workpiece.

5. The electrophoresis and powder spraying production line according to claim 1 is characterized in that: The first curing device (5) and the second curing device (7) are curing furnaces.

6. The electrophoresis and powder spraying production line according to claim 1 is characterized in that: The powder spraying mechanism (6) comprises more than one powder spraying device (15) which are arranged in sequence, the powder spraying device (15) comprising a manual powder spraying area (16) and an automatic powder spraying area (17), the manual powder spraying area (16) being arranged on both sides of the automatic powder spraying area (17), and the automatic powder spraying area (17) being provided with an automatic powder spraying device (18).

7. The electrophoresis and powder spraying production line according to claim 1 is characterized in that: The conveying mechanism (A) comprises a conveying chain assembly and a hook for hanging the workpiece, wherein the hook is installed below the conveying chain assembly.

8. The electrophoresis and powder spraying production line according to claim 1 is characterized in that: The upper workpiece area (1), the pre-treatment mechanism (2), the electrophoresis device (3) and the post-cleaning mechanism (4) are arranged in a circuitous manner, and the first curing device (5), the powder spraying mechanism (6), the second curing device (7) and the lower workpiece area (8) are arranged in a circuitous manner.

9. The electrophoresis and powder spraying production line according to claim 2 is characterized in that: The pre-deoiling device (9) comprises a pre-deoiling tank and a plurality of spraying assemblies arranged above the pre-deoiling tank. The deoiling device (10) is an oil immersion tank for deoiling the immersed workpiece. The ceramicizing device (12) is a ceramic immersion tank for ceramicizing the immersed workpiece, or the phosphating device is a phosphating immersion tank for phosphating the immersed workpiece.

10. The electrophoresis and powder spraying production line according to claim 2, characterized in that: The first clean water spray device (11) and the second clean water spray device (13) both comprise a clean water tank for placing workpieces and a plurality of clean water spray heads arranged above the clean water tank.

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