Hand-held adjustable stroke insulated reciprocating silvering machine

Abstract

The present application relates to the technical field of brush plating equipment, and particularly relates to a handheld adjustable stroke insulated reciprocating silver plating machine. The brush plating rod is slidably connected to the main body of the machine frame through a linear guide bearing, a DC brushless reduction motor drives an eccentric transmission wheel, the brush plating rod and the plating pen are driven to realize stable and automatic linear reciprocating motion through a fisheye bearing and an insulated isolation connecting piece, replacing manual operation; the eccentric transmission wheel is provided with connecting holes with different center distances in multiple gears, the reciprocating stroke can be flexibly adjusted, and the machine is suitable for various workpiece sizes; the insulated isolation connecting piece and the machine frame of insulating material form a double insulation structure, effectively blocking current leakage and ensuring plating layer quality; the potting type control box has waterproof and moisture-proof performance, and is suitable for high-humidity workshop environment. The present application can significantly reduce labor intensity, improve work efficiency, has high plating layer qualification rate, has the advantages of stable operation, safety and reliability, strong universality and the like, and is suitable for automatic silver plating processing of workpieces such as wiring boards and mutual inductors.

Description

Technical Field

[0001] This invention relates to the field of electroplating equipment technology, specifically to a handheld adjustable-stroke insulated reciprocating silver plating machine used in conjunction with an intelligent electroplating machine. Background Technology

[0002] In the production and processing of electrical components such as current transformers and terminal blocks, surface silver plating is a key process to improve conductivity and corrosion resistance. Currently, the industry generally uses intelligent brush plating machines in conjunction with manual hand-held plating pens to complete the silver plating operation: the intelligent brush plating machine leads out positive and negative electrodes, the positive electrode is connected to a self-made spatula-shaped plating pen with a head covered with highly absorbent cotton cloth, and the negative electrode is connected to the workpiece to be processed. After the operator dips into the silver plating solution, they complete the brush plating by manually wiping back and forth.

[0003] This traditional method has many technical defects and safety hazards. First, the continuous repetitive manual movements are labor-intensive, easily leading to muscle fatigue over long periods. Furthermore, the frequency and pressure of manual operation cannot be kept constant, directly causing uneven coating thickness distribution and affecting the product's electrical performance. Second, the plating pen is directly connected to the positive terminal, and manual handling easily leads to contact with non-insulated areas, causing current leakage. This reduces the effective current applied to the workpiece, resulting in loose coating crystals and poor adhesion. Simultaneously, manual operation makes it difficult to stably control the contact pressure between the cloth and the workpiece, and inconsistent plating solution supply further exacerbates the problem of poor coating uniformity.

[0004] Furthermore, after silver plating, the workpieces need to be rinsed and dried. The high moisture content in the workshop environment and the damp hands of operators significantly increase the risk of electric shock. More importantly, existing intelligent brush plating machines lack dedicated automatic reciprocating actuators, making it impossible to achieve both manual replacement and process quality assurance. This makes it difficult to meet the needs of mass production, standardization, and safety in silver plating of workpieces such as current transformers. Summary of the Invention

[0005] The purpose of this invention is to provide a handheld adjustable stroke insulating reciprocating silver plating machine to solve the problems of high labor intensity, poor plating quality, current leakage and safety hazards in the prior art.

[0006] To achieve the above objectives, the technical solution of this application is: a handheld adjustable stroke insulating reciprocating silver plating machine, including a plating pen, a plating rod, a frame assembly, and a transmission assembly; The plating pen is connected to the front end of the plating rod, and the tail end of the plating rod is provided with a fixing point for connecting to the positive terminal of an external power supply. The frame assembly is slidably connected to the brush plating rod via a linear guide bearing; The transmission component is built into the frame assembly and specifically includes an eccentric transmission wheel and an insulating connecting member. The eccentric transmission wheel has a plurality of connecting holes spaced at different distances from the center along the circumferential direction. One end of the insulating connecting member is connected to the connecting hole, and the other end is connected to the brush plating rod to convert the rotational motion of the eccentric transmission wheel into the linear reciprocating motion of the brush plating rod.

[0007] In another embodiment of the invention, the rack assembly includes a vertically connected rack body and rack handle, and the transmission assembly is located within the rack body.

[0008] In another embodiment of the invention, a power control component is also included, which includes a connected brushless DC geared motor and a potted control box, wherein the brushless DC geared motor is located inside the frame handle for driving the eccentric transmission wheel to rotate, preferably, the power supply voltage of the brushless DC geared motor is 24V.

[0009] In another embodiment of the present invention, the brush plating rod is provided with a limiting structure on its body, and the frame body is provided with a guide hole that cooperates with it. The limiting structure slides in the guide hole to restrict the circumferential rotation of the brush plating rod.

[0010] In another implementation of the present invention, the limiting structure is an L-shaped cylindrical structure.

[0011] In another embodiment of the present invention, the transmission assembly further includes a fisheye bearing disposed between the eccentric transmission wheel and the insulating connecting member.

[0012] In another embodiment of the present invention, the eccentric drive wheel is provided with three connecting holes, which are 10mm, 14mm and 17mm away from the center, respectively.

[0013] In another embodiment of the invention, the rack assembly further includes a rack cover plate that detachably covers the transmission area of ​​the rack body.

[0014] In another embodiment of the present invention, the plating pen and the plating rod are both made of corrosion-resistant conductive metal material; the insulating and isolating connector is made of polytetrafluoroethylene material; and the frame body and the frame handle are made of nylon material.

[0015] In another implementation of the present invention, the internal circuit board of the potted control box is potted as a whole using insulating sealant.

[0016] By adopting the above technical solution, the present invention can achieve the following technical effects: 1. This invention adopts a motor-driven automatic reciprocating structure, which completely replaces the manual brushing action, significantly reducing the labor intensity of operators and increasing work efficiency by more than 30%; the reciprocating motion trajectory is constant and consistent, effectively solving the problem of uneven force and frequency of manual operation, and greatly improving the uniformity and consistency of the coating.

[0017] 2. The use of PTFE insulating connectors and nylon frame and handle forms double insulation protection, completely blocking the positive current leakage path, ensuring stable output of effective plating current, denser plating crystals, stronger adhesion, and significantly improving the product plating qualification rate.

[0018] 3. The highly absorbent cotton cloth at the tip of the plating pen, combined with a stable automatic reciprocating motion, ensures a continuous and uniform supply of plating solution. This avoids problems such as inconsistent plating solution amounts and unstable pressure caused by manual operation, resulting in a consistent plating color and uniform thickness, thus improving appearance and performance.

[0019] 4. The eccentric drive wheel is equipped with multiple sets of threaded holes with different center distances, which can be flexibly switched and adjusted according to the workpiece size. It is suitable for silver plating of various specifications of terminal boards, current transformers and other workpieces, and has strong versatility and is easy to use.

[0020] 5. The whole machine is powered by a safe 24V DC voltage and is equipped with a potted sealed control box, which can effectively isolate the moisture in the high humidity environment of the workshop, prevent the circuit from getting damp and short-circuiting, eliminate the risk of electric shock from both the power supply and structure aspects, and significantly improve the safety of operation.

[0021] 6. The frame cover effectively isolates the rotating transmission components, preventing hand contact and injury during operation; the frame and handle are made of lightweight insulating nylon material, which is comfortable to hold, non-slip and durable, and takes into account safety protection, ease of operation and user experience. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 Exploded view of a handheld adjustable-stroke insulated reciprocating silver plating machine; Figure 2 A schematic diagram of a handheld adjustable-stroke insulated reciprocating silver plating machine; Figure 3 Three-view diagram of a handheld adjustable-stroke insulated reciprocating silver plating machine; The numbers in the diagram are explained as follows: 1. Plating pen; 2. Plating rod; 3. Linear guide bearing; 4. Insulating connection; 5. Frame cover plate; 6. Fisheye bearing; 7. Eccentric drive wheel; 8. Frame body; 9. Frame handle; 10. DC brushless geared motor; 11. Potted control box. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0027] Example 1 This embodiment provides a handheld adjustable stroke insulated reciprocating silver plating machine as a supporting execution device for existing intelligent brush plating machines. It includes a plating pen 1, a brush plating rod 2, a frame assembly, a transmission assembly, a power control assembly, a linear guide bearing 3, an insulated connecting piece 4, and a frame cover plate 5.

[0028] The plating pen 1 is a plating solution brushing device. The body is made of 316 stainless steel, and the head is tightly wrapped with highly absorbent fiber cotton cloth and fixed by straps. 316 stainless steel is resistant to acid and alkali corrosion of silver plating solution and has high mechanical strength. The highly absorbent cotton cloth can stably absorb plating solution, buffer contact force, avoid scratching the workpiece and improve the uniformity of the plating layer.

[0029] The plating rod 2 is a plating pen connection and current conduction component, made of 316 stainless steel. The rod body has an L-shaped cylindrical structure that slides with the pre-set circular hole of the frame body 7 to limit circumferential rotation, prevent the plating pen 1 from rotating, and ensure consistent plating trajectory. The tail of the rod body has a positive electrode fixing point for connecting the positive electrode wire of the intelligent plating machine to achieve precise conductivity.

[0030] The linear guide bearing 3 is assembled between the brush plating rod 2 and the frame body 7, providing precise guidance for the linear reciprocating motion of the brush plating rod 2, reducing offset and jamming, and improving the stability of brush plating.

[0031] The transmission assembly is built into the frame body 7 and includes an eccentric transmission wheel 7, a fisheye bearing 6, and an insulating connection 4. The eccentric transmission wheel 7 is made of 6061 aluminum alloy, balancing lightweight and high strength. The wheel body has three threaded connection holes with center distances of 10mm, 14mm, and 17mm, which can convert rotary motion into linear reciprocating motion and achieve adjustable reciprocating stroke. The fisheye bearing 6 is located between the eccentric transmission wheel 7 and the insulating connection 4, adapting to changes in transmission angle and ensuring smooth and jam-free movement. The insulating connection 4 is made of polytetrafluoroethylene and is connected in series between the brush plating rod 2 and the fisheye bearing 6, completely blocking the leakage of positive current to the transmission assembly and the equipment body, ensuring that the current forms a closed loop only along the brush plating rod 2 - plating pen 1 - covering cotton cloth - workpiece, avoiding current loss that affects the plating quality.

[0032] The frame assembly includes a frame body 7, a frame handle 8, and a frame cover 5, all of which are CNC machined in one piece. The frame body 7 and the frame handle 8 are made of nylon, which has high insulation, high strength, and lightweight. The frame body 7 is used to install transmission components, and the frame handle 8 is used to house the motor and improve hand comfort and anti-slip properties. The frame cover 5 is made of 304 stainless steel and can be detachably covered in the transmission area of ​​the frame body 7 to prevent the hand from touching the rotating parts. It is also corrosion-resistant and suitable for high humidity environments.

[0033] The power control component includes a DC brushless geared motor 10 and a potted control box 11. The DC brushless geared motor 10 is powered by 24V DC, equipped with a planetary gearbox, has a power of 150W, a speed of 0~600rpm, and an output torque of 7N・m. It is installed in the frame handle 8 and drives the eccentric transmission wheel 7 to rotate. The potted control box 11 has a shell made of 304 stainless steel, and integrates a speed control circuit board inside. It is completely potted with insulating sealant to isolate moisture and prevent short circuits. The motor can be started and stopped and the speed can be adjusted by the speed control knob.

[0034] During assembly, the DC brushless geared motor 10 is embedded into the frame handle 8, and the eccentric transmission wheel 7 is fastened to the motor output shaft; the threaded hole corresponding to the stroke of the eccentric transmission wheel 7 is selected, and the fish-eye bearing 6 and the insulating isolation connector 4 are connected in sequence, and then assembled with the brush plating rod 2; the L-shaped structure of the brush plating rod 2 is embedded into the round hole of the frame body 7 and the linear guide bearing 3 is assembled; the plating pen 1 covered with cotton cloth is installed at the front end of the brush plating rod 2, the frame cover plate 5 is closed, the potted control box 11 is fixed to the frame handle 8 and the circuit wiring is completed, thus constituting the handheld adjustable stroke insulating reciprocating silver plating machine described in this embodiment.

[0035] Example 2 This embodiment provides a method for using the handheld adjustable stroke insulating reciprocating silver plating machine described in Embodiment 1, including the following steps: Embed the DC brushless geared motor 10 inside the frame handle 8, and fasten the eccentric drive wheel 7 to the motor output shaft with precision screws; select threaded holes with a center distance of 10mm, 14mm or 17mm on the eccentric drive wheel 7 according to the workpiece size, install the fisheye bearing 6 and the polytetrafluoroethylene insulating connector 4 in sequence, and then connect them to the brush plating rod 2; install the L-shaped cylindrical structure of the brush plating rod 2 into the guide hole of the frame body 7, and assemble the linear guide bearing 3 to limit circumferential rotation; wrap the head of the 316 stainless steel plating pen 1 with highly absorbent cotton cloth and tie it tightly, and install the plating pen 1 at the front end of the brush plating rod 2; cover the 304 stainless steel frame cover plate 5, fix the potted control box 11 to the frame handle 8 and complete the internal wiring.

[0036] Connect the positive terminal fixing point at the tail of the brush plating rod 2 to the positive terminal wire of the intelligent brush plating machine, and connect the workpiece to be processed to the negative terminal of the intelligent brush plating machine; the potted control box 11 is connected to an external 24V switching power supply to power the DC brushless geared motor 10.

[0037] According to the specifications of the workpieces such as terminal boards and current transformers to be processed, the reciprocating stroke of the brush plating is adjusted by changing the threaded holes with different center distances on the eccentric transmission wheel 7; the motor speed is adjusted to a suitable value within the range of 0~600rpm by using the speed adjustment knob of the potting control box 11.

[0038] Holding the imported nylon frame handle 8, dip the tip of the plating pen 1 into the silver plating solution, and turn on the potting-type control box 11. The motor drives the eccentric transmission wheel 7 to rotate, which, through the fisheye bearing 6 and the insulating isolation connector 4, drives the plating rod 2 and the plating pen 1 to make a stable linear reciprocating motion, automatically plating the surface of the workpiece. During the plating process, the insulating isolation connector 4, the frame body 7, and the frame handle 8 form double insulation to block current leakage. The potting-type control box 11 is suitable for the high humidity environment of the workshop, and the frame cover plate 5 protects the rotating parts, realizing safe, uniform, and efficient silver plating processing.

[0039] After the brush plating is completed, turn off the switch of the potting control box 11, disconnect the power supply and the wiring of the intelligent brush plating machine, remove the plating pen 1 to clean the residual plating solution and cotton cloth, and complete a single operation.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A handheld adjustable-stroke reciprocating silver plating machine for insulation, comprising: The plating pen (1), plating rod (2), frame assembly, and transmission assembly are characterized by: The plating pen (1) is connected to the front end of the plating rod (2), and the tail end of the plating rod (2) is provided with a fixing point for connecting to the positive terminal of an external power supply. The frame assembly is slidably connected to the brush plating rod via a linear guide bearing (3); The transmission assembly is built into the frame assembly and specifically includes an eccentric transmission wheel (7) and an insulating isolation connector (4). The eccentric transmission wheel (7) has several connecting holes spaced at different distances from the center along the circumferential direction. One end of the insulating isolation connector (4) is connected to the connecting hole, and the other end is connected to the brush plating rod (2) to convert the rotational motion of the eccentric transmission wheel (7) into the linear reciprocating motion of the brush plating rod (2).

2. The handheld adjustable stroke insulating reciprocating silver plating machine according to claim 1, characterized in that: The rack assembly includes a vertically connected rack body (8) and rack handle (9), and the transmission assembly is located within the rack body (8).

3. The handheld adjustable stroke insulating reciprocating silver plating machine according to claim 1, characterized in that: It also includes a power control assembly comprising a connected brushless DC geared motor (10) and a potted control box (11), wherein the brushless DC geared motor (10) is located within the frame handle (9) for driving the eccentric drive wheel to rotate (7).

4. The handheld adjustable stroke insulating reciprocating silver plating machine according to claim 2, characterized in that: The brush plating rod (2) has a limiting structure on its body, and the frame body (8) has a guide hole that cooperates with it. The limiting structure slides in the guide hole to restrict the circumferential rotation of the brush plating rod (2).

5. The handheld adjustable stroke insulating reciprocating silver plating machine according to claim 4, characterized in that: The limiting structure is an L-shaped cylindrical structure.

6. The handheld adjustable stroke insulating reciprocating silver plating machine according to claim 1, characterized in that: The transmission assembly also includes a fisheye bearing (6), which is disposed between the eccentric transmission wheel (7) and the insulating isolation connector (4).

7. The handheld adjustable stroke insulating reciprocating silver plating machine according to claim 1, characterized in that: The eccentric drive wheel (7) has three connecting holes, which are 10mm, 14mm and 17mm away from the center, respectively.

8. The handheld adjustable stroke insulating reciprocating silver plating machine according to claim 1, characterized in that: The rack assembly also includes a rack cover (5) that detachably covers the transmission area of ​​the rack body (8).

9. A handheld adjustable stroke insulating reciprocating silver plating machine according to claim 2, characterized in that: The plating pen (1) and the plating rod (2) are both made of corrosion-resistant conductive metal material; the insulating and isolating connector (4) is made of polytetrafluoroethylene material; the frame body (8) and the frame handle (9) are made of nylon material.

10. A handheld adjustable stroke insulating reciprocating silver plating machine according to claim 1, characterized in that: The internal circuit board of the potted control box (11) is potted as a whole using insulating sealant.

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