A dynamic tension control system for the middle part of a continuous electroplating production line

Abstract

The utility model discloses a kind of dynamic tension control system in continuous electroplating production line middle part, it is related to electroplating production equipment field, including driving wheel, buffer wheel, displacement sensor and auxiliary wheel, the driving wheel is driven by driving motor, auxiliary wheel is set in the rear of driving wheel, buffer wheel is set between driving wheel and auxiliary wheel, buffer wheel provides constant initial tension by swing arm suspension counterweight, buffer wheel moves inward or outward with the tension variation of product, the displacement of buffer wheel is monitored in real time by displacement sensor being set in its outside, the displacement sensor controls driving motor by signal, to adjust the rotating speed of driving wheel.The utility model increases driving wheel and counterweight type buffer wheel in middle part, combines real-time feedback control, realizes the dynamic balance of electroplating production line tension.Effective in reducing spot plating wheel running and positioning hole deformation, improve product precision and yield.

Description

Technical Field

[0001] This utility model relates to the field of electroplating production equipment, specifically to a dynamic tension control system in the middle of a continuous electroplating production line. Background Technology

[0002] In continuous electroplating production, strip or sheet-shaped substrates (such as copper foil, flexible circuit boards, etc.) need to be continuously transferred between multiple electroplating tanks. Due to factors such as electroplating solution resistance, roller friction, and speed fluctuations, uneven tension may occur in different sections of the production line, leading to the following problems:

[0003] 1. Spot plating wheel misalignment: Tension fluctuations cause the substrate to shift, resulting in deviation of the selective electroplating (spot plating) position;

[0004] 2. Deformation of positioning holes: Excessive tension will affect the positioning of the spot plating wheel, causing the positioning pin of the spot plating wheel to puncture the positioning hole, which will affect the alignment accuracy of subsequent processes.

[0005] 3. Risk of tape breakage: A sudden increase in tension may cause the substrate or the connected joints to break, resulting in production interruption.

[0006] Traditional solutions primarily rely on the speed difference between the head and tail main drive wheels to adjust tension, but this results in slow response and an inability to precisely control tension fluctuations in the middle of the production line. Some solutions employ pneumatic or magnetic powder brakes, but these are costly and complex to maintain. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a dynamic tension control system for the middle section of a continuous electroplating production line. By adding a drive wheel and a counterweight buffer wheel in the middle section, combined with real-time feedback control, dynamic tension balance of the electroplating production line is achieved. This effectively reduces spot plating wheel misalignment and positioning hole deformation, improving product accuracy and yield.

[0008] The purpose of this utility model is achieved through the following technical solution: This dynamic tension control system for the middle of a continuous electroplating production line is arranged in the middle of the production line and includes a drive wheel, a buffer wheel, a displacement sensor, and an auxiliary wheel. The drive wheel is driven by a drive motor, and the auxiliary wheel is located behind the drive wheel. A buffer wheel is set between the drive wheel and the auxiliary wheel. The buffer wheel suspends a counterweight through a swing arm to provide a constant initial tension. The buffer wheel moves inward or outward as the tension of the product changes. The displacement of the buffer wheel is monitored in real time by a displacement sensor located on its outer side. The displacement sensor controls the drive motor through a signal to adjust the speed of the drive wheel.

[0009] As a further technical solution, the counterweight can be detachably installed on the buffer wheel, making it easy to adjust the mass.

[0010] As a further technical solution, the displacement direction of the buffer wheel is perpendicular to the travel direction of the product.

[0011] As a further technical solution, a pressure roller is installed on one side of the drive wheel, and the pressure roller is controlled and pressed by a pneumatic pressing device.

[0012] As a further technical solution, a pretreatment tank is set at the front end of the production line, a posttreatment tank is set at the rear end of the production line, and several electroplating tanks are set between the pretreatment tanks and the posttreatment tanks. The dynamic tension control system is located between the electroplating tanks in the middle of the production line.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The displacement of the buffer wheel 6 is monitored in real time by a displacement sensor to obtain the tension changes of the products on the production line. The speed of the drive motor is then controlled by the signal. The mechanical counterweight and the electronic control are linked to achieve millisecond-level tension compensation and achieve rapid response.

[0015] 2. The counterweight can be detachably installed on the buffer wheel, and the weight can be adjusted according to the needs to adapt to different tension requirements;

[0016] 3. Reduce the displacement of the spot plating roller; stable tension can suppress the lateral displacement of the substrate; stable tension can prevent misalignment.

[0017] 4. To prevent deformation of the positioning holes, dynamic adjustment is used to avoid excessive local tension that could cause the holes to stretch or be punctured by the positioning pins of the plating wheel.

[0018] 5. The pressure roller is controlled by a pneumatic pressing device to press the drive wheel, which improves the stability and reliability of the production line operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0020] Figure 2 This is a top view of the structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the connection structure between the drive wheel and the drive motor in this utility model.

[0022] Figure 4 This is a schematic diagram of the production line structure in this utility model.

[0023] Explanation of reference numerals in the attached drawings: Product 1, Drive wheel 2, Drive motor 3, Pressure roller 4, Pneumatic pressing device 5, Buffer wheel 6, Counterweight 7, Displacement sensor 8, Auxiliary wheel 9, Electroplating tank 10, Pre-treatment tank 20, Post-treatment tank 30, Production line 40. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings:

[0025] Example: As attached Figures 1-4 As shown, the dynamic tension control system in the middle of this continuous electroplating production line includes a product 1, a drive wheel 2, a drive motor 3, a pressure wheel 4, a pneumatic pressing device 5, a buffer wheel 6, a counterweight 7, a displacement sensor 8, an auxiliary wheel 9, an electroplating tank 10, a pretreatment tank 20, a posttreatment tank 30, and a production line 40.

[0026] Reference Appendix Figure 1 , 2 The drive wheel 2 is driven by the drive motor 3, the auxiliary wheel 9 is located behind the drive wheel 2, and a buffer wheel 6 is installed between the drive wheel 2 and the auxiliary wheel 9. Figure 1 The diagram shows the trajectory of the buffer wheel 6 as it moves up and down (in reality, only one buffer wheel 6 exists). The displacement direction of the buffer wheel 6 is perpendicular to the travel direction of the product 1 on the production line 40. The buffer wheel 6 is suspended by a counterweight 7 via a swing arm (hinged) to provide a constant initial tension. As the product 1 is conveyed along the production line 40, the buffer wheel 6 moves inward or outward according to the tension of the product 1. The displacement of the buffer wheel 6 is monitored in real time by a displacement sensor 8 located on its outer side. This displacement sensor 8 controls the drive motor 3 (PLC controller) via a signal to adjust the speed of the drive wheel 2.

[0027] Preferably, the counterweight 7 is detachably mounted on the buffer wheel 6, which facilitates mass adjustment and adapts to different tension requirements.

[0028] like Figure 1 , 2 As shown, a pressure roller 4 is provided on one side of the drive wheel 2, and the pressure roller 4 is pressed by a pneumatic pressing device 5.

[0029] Reference Appendix Figure 4 A pretreatment tank 20 is set at the front end of the production line 40, and a posttreatment tank 30 is set at the rear end of the production line 40. Several electroplating tanks 10 are set between the pretreatment tank 20 and the posttreatment tank 30. The dynamic tension control system is arranged between the electroplating tanks 10 in the middle of the production line 40.

[0030] In actual use, the structure is deployed as follows:

[0031] The drive wheel has a diameter of 200mm and is covered with a polyurethane anti-slip layer. The servo motor has a power of 1.5kW. An adjustable-height pneumatic pressure roller presses against the product conveyor belt to further prevent slippage. The buffer wheel is hinged via a swing arm, and the counterweight is adjustable (5-20kg), corresponding to a tension of 50-200N. An MTS displacement sensor is used, with an accuracy of ±0.1mm.

[0032] The control program is set as follows:

[0033] The preset buffer wheel displacement threshold is ±5mm. If it exceeds this threshold, the motor speed is adjusted according to Δv=k•Δx (where k is the gain coefficient).

[0034] When this device was used to assist in the production of a certain product, it was used for a total of 165 hours of production. The product tension was normal, and no abnormalities such as the plating wheel misalignment or the positioning hole deformation occurred.

[0035] The working process of this utility model:

[0036] In this invention, the drive wheel 2 is installed in the middle of the tank (electroplating tank 10) and is independently driven by a servo motor (drive motor 3). The buffer wheel 6 is located behind the drive wheel 2 and is suspended by a counterweight 7 via a swing arm, providing a constant initial tension (F=mg). When the tension of the production line 40 increases, the substrate (product 1) pulls the buffer wheel 6 outward; when the tension decreases, the buffer wheel 6 returns to its original position under the action of the counterweight 7. The displacement sensor 8 uses a laser rangefinder or encoder to monitor the horizontal position of the buffer wheel 6 in real time.

[0037] The control logic is as follows: When the displacement sensor 8 detects that the buffer wheel 6 moves outward (increased tension), it controls the drive motor 3 via a signal to increase the speed of the drive wheel 2 and counteract the excess tension. When the buffer wheel 6 moves inward (decreased tension), it controls the drive motor 3 via a signal to decrease the speed of the drive wheel 2 and restore tension balance.

[0038] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this utility model should fall within the protection scope of the appended claims.

Claims

1. A dynamic tension control system for the middle section of a continuous electroplating production line, arranged in the middle of the production line (40), characterized in that: The device includes a drive wheel (2), a buffer wheel (6), a displacement sensor (8), and an auxiliary wheel (9). The drive wheel (2) is driven by a drive motor (3). The auxiliary wheel (9) is located behind the drive wheel (2). A buffer wheel (6) is located between the drive wheel (2) and the auxiliary wheel (9). The buffer wheel (6) is suspended by a counterweight (7) via a swing arm to provide a constant initial tension. The buffer wheel (6) moves inward or outward as the tension of the product (1) changes. The displacement of the buffer wheel (6) is monitored in real time by a displacement sensor (8) located on its outer side. The displacement sensor (8) controls the drive motor (3) via a signal to adjust the rotational speed of the drive wheel (2).

2. The dynamic tension control system in the middle of the continuous electroplating production line according to claim 1, characterized in that: The counterweight (7) can be detachably installed on the buffer wheel (6) for easy adjustment of the mass.

3. The dynamic tension control system in the middle of the continuous electroplating production line according to claim 1, characterized in that: The displacement direction of the buffer wheel (6) is perpendicular to the travel direction of the product (1).

4. The dynamic tension control system in the middle of the continuous electroplating production line according to claim 1, characterized in that: A pressure roller (4) is provided on one side of the drive wheel (2), and the pressure roller (4) is pressed by a pneumatic pressing device (5).

5. The dynamic tension control system in the middle of the continuous electroplating production line according to claim 1, characterized in that: The production line (40) is equipped with a pretreatment tank (20) at the front end and a posttreatment tank (30) at the rear end. Several electroplating tanks (10) are set between the pretreatment tank (20) and the posttreatment tank (30). The dynamic tension control system is located between the electroplating tanks (10) in the middle of the production line (40).

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