Plastic part continuous electroplating device and electroplating method thereof

Abstract

The invention discloses a continuous electroplating device for plastic parts and an electroplating method of the continuous electroplating device, relates to the technical field of electroplating of the plastic parts, and aims to solve the technical problems that the electroplating efficiency of the plastic parts is low, electroplating liquid is difficult to treat, and waste gas affects the environment during electroplating. An exhaust assembly is arranged on the baffle plate; the electroplating mechanisms are arranged on the protection mechanism, each electroplating mechanism comprises an electroplating bath, an ultrasonic plate is arranged in each electroplating bath, an air pump is arranged below each electroplating bath, an air pipe is arranged on each air pump, and one end, far away from the air pump, of each air pipe extends into the corresponding electroplating bath; and the multiple driving mechanisms are arranged on the protection mechanism, each driving mechanism comprises a support, two sliding rails are arranged on the side faces of the supports, and driven assemblies are arranged on the two sliding rails in a sliding mode. The device has the advantages of small occupied area, high electroplating efficiency, convenience in waste liquid collection and small environmental influence.

Description

Technical Field

[0001] This invention relates to the field of plastic parts electroplating technology, and more specifically, to a continuous plastic parts electroplating apparatus and electroplating method thereof. Background Technology

[0002] Plastic electroplating parts are widely used in the automotive, electronics, and home appliance industries due to their advantages of being lightweight, low-cost, and possessing both metallic texture and performance. For example, the automotive industry uses plastic electroplating parts to replace metal components to reduce vehicle weight and improve fuel efficiency, while the electronics industry uses plastic electroplating to give casings conductive and wear-resistant properties. As these industries continue to increase their requirements for product output and quality, traditional intermittent electroplating can no longer meet the needs of large-scale mass production, making continuous electroplating technology an inevitable trend.

[0003] Existing electroplating equipment has a complex structure and an unreasonable design. During electroplating, plastic parts need to undergo multiple pretreatment processes, which require several processing chambers, making the overall electroplating equipment too large and unsuitable for use in small spaces. During electroplating, the plastic parts need to be processed sequentially, which reduces the electroplating efficiency of the plastic parts, and the waste liquid generated during electroplating is not easy to treat.

[0004] In view of this, we propose a continuous electroplating apparatus for plastic parts and an electroplating method thereof. Summary of the Invention

[0005] The purpose of this invention is to provide a continuous electroplating apparatus and method for plastic parts to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a continuous electroplating device for plastic parts and an electroplating method thereof, comprising: a protective mechanism, wherein the protective mechanism includes a worktable, a baffle is provided on the worktable, and an exhaust assembly is provided on the baffle; An electroplating mechanism is provided, which is placed on a protective mechanism. Each electroplating mechanism includes an electroplating tank, an ultrasonic plate is provided in the electroplating tank, and an air pump is provided below the electroplating tank. An air pipe is provided on the air pump, and the end of the air pipe away from the air pump extends into the electroplating tank. A drive mechanism is provided, which is placed on a protective mechanism. Each drive mechanism includes a bracket. Two slide rails are provided on the side of the bracket. A driven component is slidably arranged on the two slide rails. A threaded rod is helically connected inside the driven component. A support mechanism is provided, which is placed on the drive mechanism. Each support mechanism includes a side plate. Two ear plates are symmetrically arranged on one side of the side plate, and two short columns are arranged on the other side. A long plate is also provided on the side of the side plate with the short columns. The hanging mechanism comprises several parts and is placed on the electroplating mechanism. The hanging mechanism includes a frame, the edge of which is provided with a protruding plate, and one end of the frame is symmetrically provided with two through holes. Two handles are symmetrically provided on the protruding plate. Several crossbars are provided inside the frame, and each crossbar is provided with a hook.

[0007] Preferably, the exhaust assembly includes an exhaust channel, a plurality of exhaust fans are provided on the side of the exhaust channel facing the electroplating mechanism, and an exhaust pipe communicating with the interior of the exhaust channel is provided on the other side of the exhaust channel.

[0008] Preferably, the air pump is fixed to the side wall of the workbench, a drain pipe is provided at the bottom of the electroplating tank, a valve is provided on the drain pipe, and a wastewater tank is provided on the side of the drain pipe away from the electroplating tank.

[0009] Preferably, the threaded rod is rotatably connected to the bracket, and one end of the threaded rod extends out of the side of the bracket and is connected to a small gear. A large gear meshes with the small gear, and a servo motor is mounted on the small gear. The servo motor is fixed to the side of the bracket.

[0010] Preferably, the driven component includes a slide plate, which has two sliding holes that are slidably connected to the slide rail, and a positioning hole is provided between the two sliding holes on the slide plate.

[0011] Preferably, the slide plate has an installation groove, and an internal threaded block is fitted into the installation groove. The internal threaded block is helically connected to the threaded rod, and the side of the internal threaded block facing the slide plate has an arc-shaped guide surface.

[0012] Preferably, the side of the slide plate is further provided with a limiting plate one, the limiting plate one side contacts the slide plate and restricts the displacement of the internal thread block, the limiting plate one is provided with a number of bolts, one end of each bolt passes through the limiting plate one and extends into the slide plate, the side of the limiting plate one is provided with a rotating seat, and the side of the limiting plate one is provided with a limiting plate two placed below the rotating seat.

[0013] Preferably, a support is provided at the end of the long plate away from the side plate, a handle is rotatably provided on the support, and a stud is provided at the end of the handle facing the side plate.

[0014] Preferably, a positioning block is provided on the side of the frame away from the protective mechanism, and the positioning block has a threaded groove, and both ends of the hook are provided with hooks.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention uses an exhaust assembly installed on the baffle plate, with an exhaust fan installed in the exhaust slot to extract the waste gas generated during electroplating and discharge it through an exhaust pipe, which can prevent the waste gas generated during electroplating from polluting the working environment and affecting the health of the operators.

[0016] 2. The present invention also uses a drive mechanism set on the baffle, in which a servo motor drives a large gear to rotate. The large gear meshes with a small gear, which drives the threaded rod to rotate back and forth, causing the driven component to slide on two slide rails, and causing the support mechanism to rise and fall, thus completing the lifting and lowering of the plastic part. No manual handling is required, and the automatic lifting improves the electroplating efficiency of the plastic part.

[0017] 3. The present invention also improves the cleaning effect of plastic parts by using an ultrasonic plate installed in the electroplating tank. The waste liquid is collected and treated by an air pump installed below the electroplating tank, through an air pipe on the air pump and a wastewater tank installed on the drain pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 For the present invention Figure 1 A bottom view of the central exhaust assembly; Figure 3 For the present invention Figure 1 Schematic diagram of the electroplating mechanism; Figure 4 For the present invention Figure 1 Schematic diagram of the drive mechanism; Figure 5 For the present invention Figure 1 A schematic diagram of the driven component; Figure 6 For the present invention Figure 1 Schematic diagram of the supporting mechanism; Figure 7 For the present invention Figure 1 A schematic diagram of the middle mounting mechanism.

[0019] Explanation of the labels in the diagram: 1. Protective mechanism; 11. Workbench; 12. Baffle; 13. Exhaust assembly; 131. Exhaust trough; 132. Exhaust fan; 133. Exhaust pipe; 2. Electroplating mechanism; 21. Electroplating tank; 22. Ultrasonic plate; 23. Air pump; 24. Air pipe; 25. Drain pipe; 26. Valve; 27. Wastewater tank; 3. Drive mechanism; 31. Bracket; 32. Slide rail; 33. Driven assembly; 331. Slide plate; 332. Sliding hole; 333. Positioning hole; 334. Mounting slot; 335 1. Limiting plate one; 336. Bolt; 337. Internal threaded block; 338. Rotary seat; 339. Limiting plate two; 34. Threaded rod; 35. Small gear; 36. Large gear; 37. Servo motor; 4. Support mechanism; 41. Side plate; 42. Ear plate; 43. Short column; 44. Long plate; 45. Support; 46. Handle; 47. Stud; 5. Hanging mechanism; 51. Frame; 52. Protruding plate; 53. Through hole; 54. Positioning block; 55. Handle; 56. Crossbar; 57. Hook. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0023] like Figures 1 to 7 As shown, the present invention relates to a continuous electroplating apparatus and electroplating method for plastic parts, comprising: The protective mechanism 1 includes a workbench 11, a baffle 12 is provided on the workbench 11, an exhaust assembly 13 is provided on the baffle 12, the exhaust assembly 13 includes an exhaust channel 131, a plurality of exhaust fans 132 are provided on the side of the exhaust channel 131 facing the electroplating mechanism 2, and an exhaust pipe 133 communicating with the interior is provided on the other side of the exhaust channel 131. Electroplating mechanism 2, several of which are provided and placed on protective mechanism 1, and each electroplating mechanism 2 includes an electroplating tank 21, an ultrasonic plate 22 is provided in the electroplating tank 21, and an air pump 23 is provided below the electroplating tank 21. An air pipe 24 is provided on the air pump 23. The end of the air pipe 24 away from the air pump 23 extends into the electroplating tank 21. The air pump 23 is fixed to the side wall of the workbench 11. A drain pipe 25 is provided at the bottom of the electroplating tank 21. A valve 26 is provided on the drain pipe 25, and a wastewater tank 27 is provided on the side of the drain pipe 25 away from the electroplating tank 21. A drive mechanism 3 is provided, and several drive mechanisms 3 are provided and placed on the protective mechanism 1. Each drive mechanism 3 includes a bracket 31. Two slide rails 32 are provided on the side of the bracket 31. A driven component 33 is slidably mounted on the two slide rails 32. A threaded rod 34 is helically connected inside the driven component 33. The threaded rod 34 is rotatably connected to the bracket 31, and one end of the threaded rod 34 extends out of the side of the bracket 31 and is connected to a pinion 35. A large gear 36 meshes with the pinion 35. A servo motor 37 is provided on the pinion 35 and is fixed to the side of the bracket 31. The driven component 33 includes a slide plate 331. The slide plate 331 has two sliding holes 332 that are slidably connected to the slide rails 32. A positioning hole 333 is provided between the slide plate 331 and a mounting groove 334 is provided inside the slide plate 331. An internal thread block 337 is fitted into the mounting groove 334. The internal thread block 337 is spirally connected to the threaded rod 34. An arc-shaped guide surface is provided on the side of the internal thread block 337 facing the slide plate 331. A first limit plate 335 is also provided on the side of the slide plate 331. The side of the first limit plate 335 contacts the slide plate 331 and restricts the displacement of the internal thread block 337. Several bolts 336 are provided on the first limit plate 335. One end of each bolt 336 passes through the first limit plate 335 and extends into the slide plate 331. A rotating seat 338 is provided on the side of the first limit plate 335, and a second limit plate 339 is provided on the side of the first limit plate 335, which is located below the rotating seat 338. Support mechanism 4, several support mechanisms 4 are provided and placed on drive mechanism 3, and each support mechanism 4 includes side plate 41. Two ear plates 42 are symmetrically arranged on one side of the side plate 41 and two short columns 43 are arranged on the other side. A long plate 44 is also provided on the side of the side plate 41 where the short columns 43 are provided. A support 45 is provided at the end of the long plate 44 away from the side plate 41. A handle 46 is rotatably provided on the support 45. A stud 47 is provided at the end of the handle 46 facing the side plate 41. The hanging mechanism 5 is provided in several parts and is placed on the electroplating mechanism 2. The hanging mechanism 5 includes a frame 51, a protruding plate 52 is provided on the edge of the frame 51, and two through holes 53 are symmetrically provided at one end of the frame 51. Two handles 55 are symmetrically provided on the protruding plate 52. Several crossbars 56 are provided inside the frame 51, and each crossbar 56 is provided with a hook 57. A positioning block 54 is provided on the side of the frame 51 away from the protective mechanism 1. The positioning block 54 has a threaded groove. Both ends of the hook 57 are provided with bent hooks.

[0024] In the method of using the present invention: S1. Pretreatment: Remove burrs, oil stains and mold release agent residue from the plastic surface through sandblasting and polishing; S2. Conductive treatment: Inject a sensitizing solution (such as stannous chloride solution) into the electroplating mechanism 2 to adsorb a layer of easily oxidized metal ions on the inside and surface of the workpiece, in preparation for activation. Treat with a noble metal salt solution (such as palladium chloride solution) to reduce the metal ions in the sensitized layer to metal particles and form a conductive core. S2.1. Sensitizing solution and noble metal salt solution are sequentially injected into several electroplating units 2; S3. Electroplating: Hang the plastic part on hook 57, ensuring the surface can be evenly contacted with the electrolyte. Immerse the hanger in the electroplating tank 21, connect the DC power supply, and use the workpiece as the cathode. Under the action of the electric field, metal ions are evenly deposited on the surface. S4. Post-treatment: Rinse the electroplated plastic parts multiple times with deionized water to remove residual electrolyte on the surface, then dry them with hot air or an oven, and immerse them in a passivation solution (such as chromate solution) to form a protective film on the plating surface and improve corrosion resistance.

[0025] In practice, the electroplating unit 2 is equipped with six parts, which are sequentially filled with sensitizing solution, precious metal salt solution and electroplating solution, followed by cleaning solution. An exhaust gas treatment device is installed at the end of the exhaust pipe 133.

[0026] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A continuous electroplating apparatus for plastic parts, characterized in that, include: The protective mechanism (1) includes a workbench (11), a baffle (12) is provided on the workbench (11), and an exhaust assembly (13) is provided on the baffle (12). Electroplating mechanism (2), wherein several electroplating mechanisms (2) are provided and placed on protective mechanism (1), and each electroplating mechanism (2) includes an electroplating tank (21), wherein an ultrasonic plate (22) is provided in the electroplating tank (21), and an air pump (23) is provided below the electroplating tank (21), wherein an air pipe (24) is provided on the air pump (23), and one end of the air pipe (24) away from the air pump (23) extends into the electroplating tank (21); A drive mechanism (3) is provided in several parts and placed on the protective mechanism (1). Each drive mechanism (3) includes a bracket (31). Two slide rails (32) are provided on the side of the bracket (31). A driven component (33) is slidably provided on the two slide rails (32). A threaded rod (34) is spirally connected inside the driven component (33). Support mechanism (4), several of which are provided and placed on drive mechanism (3), and each support mechanism (4) includes a side plate (41). Two ear plates (42) are symmetrically arranged on one side of the side plate (41), and two short columns (43) are arranged on the other side. A long plate (44) is also provided on the side of the side plate (41) where the short columns (43) are provided. The hanging mechanism (5) is provided in several parts and placed on the electroplating mechanism (2). The hanging mechanism (5) includes a frame (51). The frame (51) has a protruding plate (52) on its edge. Two through holes (53) are symmetrically arranged at one end of the frame (51). Two handles (55) are symmetrically arranged on the protruding plate (52). Several crossbars (56) are provided inside the frame (51). Each crossbar (56) is provided with a hook (57).

2. The continuous electroplating apparatus for plastic parts according to claim 1, characterized in that, The exhaust assembly (13) includes an exhaust channel (131), on the side of the exhaust channel (131) facing the electroplating mechanism (2) are a plurality of exhaust fans (132), and on the other side of the exhaust channel (131) is an exhaust pipe (133) communicating with its interior.

3. The continuous electroplating apparatus for plastic parts according to claim 1, characterized in that, The air pump (23) is fixed to the side wall of the workbench (11), and a drain pipe (25) is provided at the bottom of the electroplating tank (21). A valve (26) is provided on the drain pipe (25), and a wastewater tank (27) is provided on the side of the drain pipe (25) away from the electroplating tank (21).

4. The continuous electroplating apparatus for plastic parts according to claim 1, characterized in that, The threaded rod (34) is rotatably connected to the bracket (31), and one end of the threaded rod (34) extends out of the side of the bracket (31) and is connected to a small gear (35). A large gear (36) meshes on the small gear (35), and a servo motor (37) is provided on the small gear (35). The servo motor (37) is fixed to the side of the bracket (31).

5. The continuous electroplating apparatus for plastic parts according to claim 1, characterized in that, The driven component (33) includes a slide plate (331), on which two sliding holes (332) are provided that are slidably connected to the slide rail (32), and a positioning hole (333) is provided between the two sliding holes (332) on the slide plate (331).

6. The continuous electroplating apparatus for plastic parts according to claim 5, characterized in that, The sliding plate (331) has an installation groove (334) inside, and an internal thread block (337) is fitted into the installation groove (334). The internal thread block (337) is helically connected to the threaded rod (34), and the internal thread block (337) has an arc-shaped guide surface on the side facing the sliding plate (331).

7. The continuous electroplating apparatus for plastic parts according to claim 5, characterized in that, The side of the slide plate (331) is also provided with a limiting plate one (335). The side of the limiting plate one (335) contacts the slide plate (331) and restricts the displacement of the internal thread block (337). The limiting plate one (335) is provided with several bolts (336). One end of each bolt (336) passes through the limiting plate one (335) and extends into the slide plate (331). The side of the limiting plate one (335) is provided with a rotating seat (338), and the side of the limiting plate one (335) is provided with a limiting plate two (339) placed below the rotating seat (338).

8. The continuous electroplating apparatus for plastic parts according to claim 1, characterized in that, A support (45) is provided at the end of the long plate (44) away from the side plate (41), and a handle (46) is rotatably provided on the support (45). A stud (47) is provided at the end of the handle (46) facing the side plate (41).

9. The continuous electroplating apparatus for plastic parts according to claim 1, characterized in that, A positioning block (54) is provided on the side of the frame (51) away from the protective mechanism (1). The positioning block (54) has a threaded groove, and both ends of the hook (57) are provided with hooks.

10. A method of using a continuous electroplating apparatus for plastic parts according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Pretreatment: Remove burrs, oil stains and mold release agent residue from the plastic surface through sandblasting and polishing; S2, Conductive treatment: Inject sensitizing solution (such as stannous chloride solution) into the electroplating mechanism (2) to adsorb a layer of easily oxidized metal ions inside and on the surface of the workpiece, in preparation for activation. Treat with noble metal salt solution (such as palladium chloride solution) to reduce the metal ions of the sensitized layer to metal particles and form a conductive core. S2.1 In several electroplating units (2), sensitizing solution and noble metal salt solution are injected in sequence; S3. Electroplating: Hang the plastic part on the hook (57) to ensure that the surface can be evenly contacted with the electrolyte. Immerse the hanger in the electroplating tank (21), turn on the DC power supply, and use the workpiece as the cathode. Under the action of the electric field, metal ions are evenly deposited on the surface. S4. Post-treatment: Rinse the electroplated plastic parts multiple times with deionized water to remove residual electrolyte on the surface, then dry them with hot air or an oven, and immerse them in a passivation solution (such as chromate solution) to form a protective film on the plating surface and improve corrosion resistance.

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