Automatic lifting type barrel plating tank with accurate positioning guide rail

Abstract

The utility model discloses an automatic lifting type barrel plating tank with accurate positioning guide rail, which comprises a barrel plating tank body and a liftable barrel plating cylinder driven by a gantry lifting assembly inside the barrel plating tank body. The barrel plating cylinder is rigidly connected with a U-shaped hoisting support through shafts on both sides. The lifting assembly comprises T-shaped tracks fixed on both sides of the tank body and a lead screw lifting mechanism for driving the U-shaped hoisting support. The U-shaped hoisting support is provided with a guide mechanism at the upper end, which comprises two pairs of side guide rollers in rolling cooperation with the vertical surfaces on both sides of the T-shaped tracks and at least one front guide roller in rolling cooperation with the front end surface of the T-shaped tracks. A barrel driving motor drives the barrel plating cylinder to rotate through a torsion-proof coupling. A lifting motor drives the lead screw to realize lifting. The utility model significantly improves the stability and positioning accuracy of the barrel plating cylinder during lifting and rotation through the precise guide rail guide structure, effectively preventing deviation and shaking.

Description

Technical Field

[0001] This utility model relates to the field of electroplating equipment, and in particular to an automatic lifting barrel plating tank with a precise positioning guide rail. Background Technology

[0002] Electroplating is a process that uses the principle of electrolysis to deposit a layer of metal onto a conductive material. Electroplating refers to a surface processing method in which the substrate metal is used as the cathode in a salt solution containing the metal to be plated. Through electrolysis, the cations of the metal to be plated in the plating solution are deposited on the surface of the substrate metal to form a coating. Electroplating can enhance the corrosion resistance of metals, increase hardness, prevent wear, improve conductivity, smoothness, heat resistance, and surface aesthetics.

[0003] Traditional barrel plating tanks generally use simple slide rails or chain-type lifting mechanisms to drive the drum movement, which has significant drawbacks: 1. Insufficient positioning accuracy: The lifting rails mostly use single-sided guide wheels or open slide rail structures, which are prone to swaying and shaking during the drum lifting process, resulting in misalignment between the drum and the electrode and uneven coating thickness; 2. Low degree of automation: Lifting and rotation require manual step-by-step operation, and accidental rotation of the drum during lifting can easily cause workpiece collision damage, reducing the yield by 10%-15%; 3. Difficult maintenance: Operations such as tank liquid level monitoring and waste liquid discharge rely on manual intervention, which is inefficient and poses a risk of electrolyte leakage.

[0004] For example, patent CN214032735U discloses a small vibratory barrel plating device. Through the cooperation of a hanging ring and a hook, the lower end of the output shaft of an electric telescopic rod is connected to the barrel. Then, the output shafts of two electric telescopic rods extend downwards synchronously by a certain length, placing the barrel into the plating tank. Limiting bolts are used to fix the support groove to the first bearing seat, preventing the first bearing seat from falling off the support groove during barrel vibration. However, the lifting and rotating actions require manual operation in steps, and accidental rotation of the barrel during lifting can easily cause workpiece collision damage. This patent addresses these industry pain points by proposing a lifting barrel plating tank solution that integrates a precise positioning guide rail and automatic interlocking control. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide an automatic lifting barrel plating tank with a precise positioning guide rail.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] This utility model discloses an automatic lifting barrel plating tank with a precise positioning guide rail, comprising a barrel plating tank body, within which a liftable barrel plating cylinder is disposed; the two rotating shafts of the barrel plating cylinder are connected to a gantry-type lifting assembly via bearings; the gantry-type lifting assembly includes: lifting guide rail assemblies symmetrically fixed to both sides of the barrel plating tank body; a U-shaped hoisting bracket rigidly connected to both ends of the barrel plating cylinder's rotating shaft; a screw lifting mechanism for driving the U-shaped hoisting bracket to move vertically along the lifting guide rail assembly; the lifting guide rail assembly includes a T-shaped track extending in the vertical direction; a guide mechanism is installed at the upper end of the U-shaped hoisting bracket, the guide mechanism including: two pairs of side guide rollers symmetrically distributed on both sides of the T-shaped track and rollingly engaging with it; at least one front guide roller abutting against and rollingly engaging with the front end face of the T-shaped track; a roller drive motor for driving the barrel plating cylinder to rotate is disposed on the outside of the barrel plating tank body; the roller drive motor is connected to the barrel plating cylinder's rotating shaft via an anti-torsion coupling.

[0008] As a preferred technical solution of this utility model, the screw lifting mechanism includes: a ball screw that vertically penetrates the middle of the U-shaped hoisting bracket; a nut slider that meshes with the ball screw; a lifting motor that drives the ball screw to rotate; and the nut slider is fixedly connected to the middle of the U-shaped hoisting bracket by bolts.

[0009] As a preferred embodiment of this utility model, an anti-deviation limiting component is provided between the U-shaped hoisting bracket and the T-shaped track; the anti-deviation limiting component includes: a spring-preloaded roller seat; the side guide roller is rotatably mounted in the spring-preloaded roller seat via a rotating shaft; the spring-preloaded roller seat is provided with a preloaded spring, so that the side guide roller always tends to press against the side of the T-shaped track; an adjustable-pitch bearing bracket; the front guide roller is mounted on the bearing bracket via a bearing; the bearing bracket is adjustablely mounted in the middle of the upper end of the U-shaped hoisting bracket; by adjusting the position of the bearing bracket, the front guide roller abuts against the front end face of the T-shaped track.

[0010] As a preferred embodiment of this utility model, the barrel plating cylinder is a cylindrical body with a polygonal cross-section; the side wall of the barrel plating cylinder is evenly provided with multiple electroplating solution through holes with a diameter of 1 to 5 mm; one end of the barrel plating cylinder is provided with a hinged quick-opening cover plate; one side of the quick-opening cover plate is hinged to the end of the barrel plating cylinder by a hinge; the quick-opening cover plate and the barrel plating cylinder are connected by a snap-lock; the snap-lock includes a hook fixed to the free end edge of the quick-opening cover plate and a latch fixed to the corresponding position of the barrel plating cylinder.

[0011] As a preferred embodiment of this utility model, an anti-rotation clamping plate is provided at the connection between the U-shaped hoisting bracket and the rotating shaft of the barrel plating cylinder; an elongated groove is provided in the middle of the anti-rotation clamping plate; one end of the elongated groove is a circular groove; the rotating shaft of the barrel plating cylinder is embedded in the circular groove of the anti-rotation clamping plate; the anti-rotation clamping plate is tightened and fixed by a locking handle; the locking handle is connected to a pressure block, and when tightened, the pressure block presses the rotating shaft into the circular groove; the elongated groove allows the rotating shaft to move slightly axially during the lifting and lowering process.

[0012] As a preferred technical solution of this utility model, the bottom of the barrel plating tank body is provided with an inclined bottom plate that tilts to one side; the inclined bottom plate forms an angle of 3 to 5 degrees with the horizontal plane; the lower end of the inclined bottom plate is connected to a drain pipe; and a manual valve for controlling drainage is installed on the drain pipe.

[0013] In a preferred embodiment of this invention, the drum drive motor and the lifting motor are electrically connected to a synchronization controller. The synchronization controller is configured to: automatically cut off the power supply to the drum drive motor when a lifting start signal is received, causing the plating drum to stop rotating; and restore power to the drum drive motor after the lifting stops and the plating drum reaches the predetermined working position or loading / unloading position.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. Two sets of pre-tightened side guide rollers clamp the rail face to eliminate horizontal sway; adjustable spacing front guide rollers press against the front end face of the rail to suppress back-and-forth swaying and ensure the relative positional accuracy of the rollers and electrodes.

[0016] 2. The synchronous controller monitors the lifting status in real time: the lifting start signal triggers the roller drive motor to cut off the power; the position detection sensor automatically resumes rotation after confirming the stop position. Effect: Prevents workpiece collision during the lifting process. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is the front view of this utility model;

[0020] Figure 3 This is a cross-sectional structural diagram AA of this utility model;

[0021] Figure 4 This is a cross-sectional structural schematic diagram of the present invention (BB);

[0022] In the diagram: 1. Barrel plating tank body; 2. Barrel plating cylinder; 3. Gantry-type lifting assembly; 4. Anti-torsion coupling; 5. Drum drive motor; 6. Quick-opening cover plate; 7. Inclined base plate; 8. Drain pipe; 9. Manual valve; 10. Synchronous controller; 21. Through hole; 31. Lifting guide rail assembly; 32. U-shaped hoisting bracket; 33. Screw lifting mechanism; 34. Anti-deviation limit assembly; 311. T-shaped track; 312. Side guide roller; 313. Front guide roller; 321. Anti-rotation clamping plate; 322. Locking handle; 331. Ball screw; 332. Nut slider; 333. Lifting motor; 341. Spring preloaded roller seat; 342. Bearing bracket. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] In the attached diagram, all identical reference numerals refer to the same components.

[0025] like Figure 1-4 As shown, this utility model provides an automatic lifting barrel plating tank with a precise positioning guide rail, aiming to improve the stability and positioning accuracy of the barrel lifting during the electroplating process, reduce shaking, and improve electroplating quality and operating efficiency. The specific structure and working process of this utility model are described in detail below with reference to embodiments.

[0026] Example 1: Basic Structure Implementation

[0027] This embodiment mainly demonstrates the core lifting and positioning structure of the barrel plating tank.

[0028] The barrel plating tank body 1, serving as both the main frame and the container for the electroplating solution, is a rectangular tank with an open top, typically made of corrosion-resistant materials (such as PP plastic or plastic-lined steel plates). Its bottom is designed with a sloping base plate 7 that tilts to one side at a 5° angle to the horizontal plane, facilitating the collection of the electroplating solution. A drain pipe 8 is welded to the lower end of the sloping base plate 7 for discharging waste liquid or rinsing water. A manual valve 9 is installed on the drain pipe 8 to control the discharge.

[0029] Barrel plating cylinder 2: This barrel plating cylinder 2 is a container for small parts to be electroplated. Its cross-section is designed as a regular hexagon (other polygons or circles are also possible), and it is made of insulating and wear-resistant material (such as rigid PVC). Numerous through holes 21 with a diameter of 3mm are evenly drilled on the sidewalls of the barrel plating cylinder 2 to ensure smooth flow of the electroplating solution. Solid steel shafts are fixed at the center of both axial ends of the barrel plating cylinder 2 for support and rotation. One end of the barrel plating cylinder 2 has an opening, and a hinged quick-opening cover 6 is installed via a hinge. A stainless steel hook is welded to the free edge of the quick-opening cover 6, and a stainless steel latch is installed at the corresponding position on the barrel plating cylinder 2. The two form a latch lock, enabling quick opening and closing of the cover.

[0030] Gantry-type lifting assembly 3: This assembly is the core component for achieving precise positioning and lifting of the barrel plating tank 2. Lifting guide rail assembly 31: Two identical lifting guide rail assemblies 31 are symmetrically and firmly fixed to the outer walls on both sides of the barrel plating tank body 1 along its length using anchor bolts. The core of each lifting guide rail assembly 31 is a vertically installed T-shaped rail 311 with a length approximately 1.5 times the tank depth (e.g., tank depth 800mm, guide rail height 1500mm). Its cross-section is "T" shaped, and it has a stable side and front face.

[0031] U-shaped lifting bracket 32: A U-shaped steel bracket with its opening facing downwards. The lower outer ends of its two arms are rigidly connected to the rotating shafts at both ends of the barrel plating cylinder 2 via deep groove ball bearings (i.e., the rotating shafts pass through the inner rings of the bearings, and the two are fixedly connected). A set of guide mechanisms is installed on the inner side of the top of each of the two arms of the U-shaped lifting bracket 32: Side guide rollers 312: Two sets of four nylon rollers (one pair at the front and one pair at the back of the inner side of the top of each arm) with deep groove ball bearings serve as side guide rollers 312. They are symmetrically installed at corresponding positions on the U-shaped lifting bracket 32 ​​via short axes, with their rims tightly against the vertical surfaces of the T-shaped track 311 on both sides, and can roll freely on the vertical surfaces, restraining swaying in the left and right directions.

[0032] Front guide roller 313: A set of two nylon rollers (one for each lifting guide rail) with deep groove ball bearings serve as front guide rollers 313. They are mounted on the inner center of the top of the two arms of the U-shaped lifting bracket 32 ​​via short shafts. These rollers are located directly in front of the T-shaped track 311, with their surfaces tightly pressed against the front end face of the T-shaped track 311, restraining swaying in the forward and backward directions. This three-sided constraint structure of "side clamping + front abutment" ensures high precision and low swaying during the lifting process.

[0033] Screw lifting mechanism 33: Used to provide lifting power. Ball screw 331: A vertically mounted high-precision ball screw 331 (e.g., 30mm diameter, 10mm lead), its lower end is fixed to the frame below the barrel plating tank body 1 via a bearing seat, and its upper end extends to the top through a pre-drilled hole in the middle of the U-shaped lifting bracket 32. Nut slider 332: A ball nut that precisely matches the ball screw 331 constitutes the nut slider 332. This nut slider 332 is firmly fixed to the mounting seat in the middle of the U-shaped lifting bracket 32 ​​by bolts. When the screw rotates, the nut slider 332 will drive the entire U-shaped lifting bracket 32 ​​to move along the screw axis. Lifting motor 333: A three-phase asynchronous lifting motor 333 with a reducer (e.g., 0.75kW power) directly drives the ball screw 331 to rotate via a coupling. The motor is installed below the barrel plating tank body 1.

[0034] Please see the appendix Figure 3 The anti-torsion coupling 4 and the drum drive motor 5: A separate worm gear drum drive motor 5 with a reducer (e.g., 1.5kW power) is fixedly installed on the foundation outside the barrel plating tank body 1, near one end of the barrel plating cylinder 2. The output shaft of the drum drive motor 5 is rigidly connected to the end of the shaft extending from the corresponding side of the barrel plating cylinder 2 via a metal anti-torsion coupling 4 (e.g., a quincunx flexible coupling or a slider coupling). The anti-torsion coupling 4 can transmit a large torque to drive the drum to rotate, while allowing a small vertical displacement deviation of the barrel plating cylinder 2 relative to the motor position during lifting and lowering (i.e., the motor is fixed, and the drum is lifted and lowered).

[0035] Anti-rotation clamp 321 and locking handle 322: An anti-rotation clamp 321 with an elongated groove is welded to the lower end of each arm of the U-shaped lifting bracket 32 ​​(i.e., the outer side where the bearing is installed). One end of the elongated groove is a semi-circular groove with a diameter slightly larger than the diameter of the rotating shaft of the barrel plating cylinder 2 (e.g., 0.1 mm larger). The rotating shaft of the barrel plating cylinder 2 is first inserted into this semi-circular groove. A locking handle 322 (such as a star-shaped handle bolt) passes horizontally through the threaded hole of the anti-rotation clamp 321. When the locking handle 322 is tightened, the flat round pressure block connected to its front end will press the rotating shaft tightly into the semi-circular groove, forming a reliable circumferential fixation (anti-rotation) and preventing the roller from slipping relative to the bracket. The design of the elongated groove provides axial movement space (a few millimeters) for the slight thermal expansion or installation deformation that may occur during the lifting process of the rotating shaft.

[0036] Example 2: Optimized Implementation of Anti-deviation, Control, and Drainage Measures

[0037] This embodiment further enhances the anti-deviation capability and ease of operation and control based on Embodiment 1.

[0038] Anti-deviation limiting component 34: It is a reinforcement based on the guide mechanism of Embodiment 1.

[0039] Spring-preloaded roller seat 341: Each side guide roller 312 is no longer directly mounted on the U-shaped lifting bracket 32, but is instead mounted in an independent spring-preloaded roller seat 341. This roller seat 341 is bolted to the corresponding position on the U-shaped lifting bracket 32. The roller seat 341 has an internal guide groove, within which the short shaft of the side guide roller 312 can slide towards / away from the side facade of the T-shaped track 311. A preload spring (e.g., a cylindrical helical compression spring with a preload force of approximately 50 N) is installed between the rear end of the short shaft (away from the track surface) and the rear wall of the roller seat 341. This spring constantly compresses the short shaft, ensuring that the rim of the side guide roller 312 is tightly pressed against the side of the T-shaped track 311. This elastic preload design automatically compensates for minor wear or assembly clearances between the track and rollers, maintaining a continuous clamping force and eliminating side clearances.

[0040] Adjustable-pitch bearing bracket 342: Each front guide roller 313 is mounted on another independent bearing bracket 342 via its bearing. The main body of the bearing bracket 342 is a slide plate with an oblong hole. The slide plate is mounted on a pre-set longitudinal adjustment groove (approximately 20-30mm long) on ​​the inner side of the top of the two arms of the U-shaped lifting bracket 32 ​​by locking bolts. During installation, first loosen the locking bolts, slide the bearing bracket 342 until the wheel surface of the front guide roller 313 is tightly pressed against the front end face of the T-shaped track 311 without any looseness or gap, and then lock the bearing bracket 342 in place. This design facilitates precise adjustment of the contact pressure (zero gap) between the front guide roller 313 and the front end face of the track after installation, commissioning, or wear.

[0041] Synchronous Controller 10: An electrical synchronous controller 10 (e.g., a PLC-based microcomputer controller) is added, whose input / output ports are electrically connected to the control circuits of the drum drive motor 5 and the lifting motor 333, respectively. This synchronous controller 10 is programmed to immediately (or 0.5 seconds in advance) cut off the power contactor of the drum drive motor 5 when the operator presses the "lifting start" button (sending a lifting start signal), causing the plating drum 2 to stop rotating. At this time, the lifting motor 333 is energized and starts, driving the plating drum 2 to lift and lower. When the plating drum 2 reaches the preset top loading / unloading position or the bottom plating working position (triggered by a limit switch mounted on the guide rail or an encoder signal from the lifting motor 333), the lifting motor 333 stops. After detecting the lifting stop, the controller 10 immediately (or with a 0.5-second delay to ensure the drum is completely stationary) restores power to the drum drive motor 5, restarting it and driving the plating drum 2 to rotate. This function ensures that the roller only moves up and down when stationary, preventing impacts, twisting, or even equipment damage that may occur when moving up and down while rotating.

[0042] Drainage structure details: The inclination angle of the inclined base plate 7 is set to 3.5° in this embodiment. The drain pipe 8 is welded to the lowest point of the side wall of the barrel plating tank body 1, and its outlet is located outside the tank body for easy connection to the drainage ditch. The manual valve 9 is a corrosion-resistant DN40 ball valve.

[0043] The method of using this utility model is as follows:

[0044] 1. Loading / Unloading: Control the lifting motor 333, which drives the gantry lifting assembly 3 via the screw lifting mechanism 33 to smoothly and accurately lift the plating cylinder 2 along the T-shaped track 311 to the loading height outside the tank (during this process, the drum drive motor 5 is de-energized, and the plating cylinder 2 has stopped rotating). Open the latch lock and the hinged quick-opening cover 6 to load small parts to be plated or unload parts that have been plated.

[0045] 2. Electroplating: Close the quick-opening cover 6 and lock the latch. Control the lifting motor 333 to reverse, smoothly lowering the plating barrel 2 and immersing it in the electroplating solution of the plating tank body 1 to the set depth. After the synchronous controller 10 detects that the lifting position is reached, it automatically turns on the power to the drum drive motor 5, and the plating barrel 2 begins to rotate, and the electroplating process begins. Under the combined action of the T-shaped track 311, the side guide rollers 312, the front guide rollers 313, and the anti-deviation limiting component 34, the plating barrel 2 remains stable and does not shake significantly when rotating in the liquid;

[0046] 3. Drainage: When it is necessary to replace or drain the electroplating solution, open the manual valve 9, and the liquid in the tank will flow quickly along the inclined bottom plate 7 to the drain pipe 8 for discharge.

[0047] This utility model is an automatic lifting barrel plating tank with a precise positioning guide rail. It mainly realizes high-precision, low-shaking vertical movement along the guide rail during the lifting of the barrel plating cylinder (reinforced by three-sided constraint of the T-shaped guide rail and anti-deviation components), ensuring uniform flow of electroplating solution and product quality. Independent lifting and rotation drives (equipped with anti-torsion couplings) and synchronous controller 10 provide safe and reliable automated control. The optimized loading and unloading structure (quick-opening cover) and inclined drainage design greatly improve the convenience and efficiency of operation.

[0048] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic lifting barrel plating tank with a precision positioning guide rail, comprising a barrel plating tank body (1), characterized in that: The barrel plating tank body (1) is equipped with a liftable barrel plating cylinder (2), and the two sides of the barrel plating cylinder (2) are connected to a gantry-type lifting assembly (3) through bearings; the gantry-type lifting assembly (3) includes: a lifting guide rail assembly (31) symmetrically fixed on both sides of the barrel plating tank body (1); a U-shaped hoisting bracket (32) rigidly connected to both ends of the rotating shaft of the barrel plating cylinder (2); and a screw lifting mechanism (33) that drives the U-shaped hoisting bracket (32) to move vertically along the lifting guide rail assembly (31); the lifting guide rail assembly (31) includes a T-shaped track extending in the vertical direction. (311); The upper end of the U-shaped hoisting bracket (32) is equipped with a guide mechanism, which includes: two pairs of side guide rollers (312), symmetrically distributed on both sides of the T-shaped track (311) and rolling with it; at least one front guide roller (313), which abuts against the front end face of the T-shaped track (311) and rolling with it; a roller drive motor (5) for driving the rotation of the roller plating cylinder (2) is provided on the outside of the body (1) of the roller plating tank, and the roller drive motor (5) is connected to the rotating shaft of the roller plating cylinder (2) through an anti-torsion coupling (4).

2. The barrel plating tank according to claim 1, characterized in that, The screw lifting mechanism (33) includes: a ball screw (331) that runs vertically through the middle of the U-shaped lifting bracket (32); a nut slider (332) that meshes with the ball screw (331); and a lifting motor (333) that drives the ball screw (331) to rotate. The nut slider (332) is fixedly connected to the middle of the U-shaped lifting bracket (32) by bolts.

3. The barrel plating tank according to claim 1, characterized in that, An anti-deviation limiting component (34) is provided between the U-shaped hoisting bracket (32) and the T-shaped track (311). The anti-deviation limiting component (34) includes a spring-preloaded roller seat (341) fixedly installed on the side of the T-shaped track (311). The side guide roller (312) is rotatably installed in the spring-preloaded roller seat (341) via a rotating shaft. A preloaded spring is provided in the spring-preloaded roller seat (341) to ensure that the side guide roller (312) always has a preloaded spring. There is a tendency to press against the side of the T-shaped track (311); the anti-deviation limiting component (34) also includes an adjustable spacing bearing bracket (342), the front guide roller (313) is mounted on the bearing bracket (342) by bearing, the bearing bracket (342) is adjustablely mounted on the upper middle part of the U-shaped hoisting bracket (32), and the front guide roller (313) abuts against the front end face of the T-shaped track (311) by adjusting the position of the bearing bracket (342).

4. The barrel plating tank according to claim 1, characterized in that, The barrel plating cylinder (2) is a cylindrical body with a polygonal cross-section. Multiple through holes (21) for the flow of plating solution are evenly opened on its side wall. The diameter of the through holes (21) is 1 mm to 5 mm. One end of the barrel plating cylinder (2) is provided with a hinged quick-opening cover plate (6). One side of the quick-opening cover plate (6) is hinged to the end of the barrel plating cylinder (2) by a hinge. The quick-opening cover plate (6) and the barrel plating cylinder (2) are connected by a snap lock. The snap lock includes a hook fixed to the free end edge of the quick-opening cover plate (6) and a lock fixed to the corresponding position on the barrel plating cylinder (2).

5. The barrel plating tank according to claim 1, characterized in that, An anti-rotation clamping plate (321) is provided at the connection between the U-shaped hoisting bracket (32) and the rotating shaft of the barrel plating cylinder (2). An elongated groove is provided in the middle of the anti-rotation clamping plate (321), and one end of the elongated groove is a circular groove. The rotating shaft of the barrel plating cylinder (2) is embedded in the circular groove of the anti-rotation clamping plate (321) and is tightened and fixed by a locking handle (322). The locking handle (322) is connected to a pressure block. When tightened, the pressure block presses the rotating shaft into the circular groove. The elongated groove allows the rotating shaft to move slightly axially during the lifting and lowering process.

6. The barrel plating tank according to claim 1, characterized in that, The bottom of the barrel plating tank body (1) is provided with an inclined bottom plate (7) that is inclined to one side, and the angle between the inclined bottom plate (7) and the horizontal plane is 3° to 5°; the lower end of the inclined bottom plate (7) is connected to a drain pipe (8), and a manual valve (9) for controlling drainage is installed on the drain pipe (8).

7. The barrel plating tank according to claim 2, characterized in that: The roller drive motor (5) and the lifting motor (333) are electrically connected to a synchronous controller (10); the synchronous controller (10) is configured to: automatically cut off the power supply of the roller drive motor (5) when a lifting start signal is received, so that the plating cylinder (2) stops rotating; and restore the power supply to the roller drive motor (5) after the lifting stops and the plating cylinder (2) reaches the predetermined working position or loading / unloading position.

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