A hanger clamping force detection device

Abstract

The utility model relates to a kind of hanger clamping force detection devices, including upper clamp jaw pull test component, upper clamp jaw opening component and electric cabinet, upper clamp jaw pull test component includes upper lifting drive part, upper lifting plate, multiple upper tension sensors and multiple upper clamping strips, upper tension sensor is one-to-one corresponding with upper clamp jaw, upper lifting drive part drives upper lifting plate lifting movement, the length direction of upper lifting plate follows the conveying direction of hanger, all upper tension sensors are fixed on upper lifting plate, one upward protruding upper clamping strip is connected on each upper tension sensor, when upper clamping strip is elevated to the highest point, the upper clamp jaw that is opened is clamped.This device is pulled by the tension signal of upper clamping strip of upper tension sensor output upper clamp jaw, to judge whether the clamping force of every upper clamp jaw on hanger has problem, can guarantee that hanger is put into use under the condition that all upper clamp jaw clamping force is normal.

Description

Technical Field

[0001] This utility model relates to the field of measuring device technology, and in particular to a device for detecting the clamping force of a hanger. Background Technology

[0002] VCP plating (vertical continuous plating) is a highly efficient plating process widely used in printed circuit boards (PCBs), metal surface treatment, and other industrial manufacturing fields. Its core principle lies in achieving uniform metal deposition of the workpiece (cathode) in the electrolyte through a continuous vertical conveying method.

[0003] With the trend towards thinner, lighter, and higher-performance consumer electronics, higher requirements are being placed on the precision of the PCB (Printed Circuit Board) circuitry used for electronic wires. Some electroplating processes employ a short-side clamping method for copper plating, with multiple clamping plates distributed vertically during VCP (Vacuum-Chip Plating) operations. Springs are used at the top of the mounting brackets behind the clamping plates to ensure the product's flatness. For these large-format, thin products, the electroplating line operations place extremely stringent demands on the current distribution of the plating line fixtures (targets) and the clamping force of the clamps. Uneven current distribution or insufficient clamping force can lead to poor through-hole filling and copper thickness deviations, resulting in complications such as thin lines, incomplete etching, and abnormal resistance values.

[0004] Chinese patent CN218917543U discloses an online conductivity detection device for electroplating targets. This device has lower clamps below the production line entrance, each corresponding to an upper clamp on the target. The lower clamps clamp the lower edge of the electroplating material to form multiple parallel circuits. The device determines whether the upper clamps are abnormal by detecting the current value of each circuit. However, it cannot detect whether the clamping force of the clamps is abnormal.

[0005] Therefore, it is necessary to design a structure for detecting the clamping force of the hanger to eliminate the problem of insufficient clamping. Utility Model Content

[0006] The main purpose of this utility model is to provide a hanger clamping force detection device, which can sense the tension of the clamping bar being pulled by the clamping claw through various tension sensors, thereby detecting whether the tension of each clamping claw on the hanger is normal, accurately locking abnormal hangers, and ensuring the normal operation of production.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a hanger clamping force detection device, located at the entrance of a vertical conveyor line, the vertical conveyor line including multiple hangers that move horizontally, each hanger having multiple upper grippers arranged side by side along the conveying direction, the hanger clamping force detection device comprising: The upper gripper tension test assembly, located below the moving path of the upper gripper, includes an upper lifting drive, an upper lifting plate, multiple upper tension sensors, and multiple upper clamping bars. Each upper tension sensor corresponds to one of the upper grippers. The upper lifting drive drives the upper lifting plate to move up and down. The length direction of the upper lifting plate is along the conveying direction of the hanger. All upper tension sensors are fixed to the upper lifting plate. Each upper tension sensor is connected to an upwardly extending upper clamping bar. When the upper clamping bar rises to its highest point, it is clamped by the open upper gripper. The upper gripper opening assembly, located to the side of the movement path of the upper gripper, includes a horizontal drive, an upper strip push block, and an upper strip back plate. The upper strip back plate is located on the back of all the upper grippers on the hanger, and the upper strip push block is located on the front of all the upper grippers on the hanger. The horizontal drive drives the upper strip push block to move toward the upper strip back plate to open all the upper grippers. The electrical control box includes a controller, to which all upward force sensors send signals. The controller controls the movement of the lifting drive and the horizontal drive, as well as the movement and stopping of the hanger.

[0008] Specifically, the electrical control box is equipped with a DC power supply and multiple ammeters. The upper clamping bar is conductive. An upper clamping jaw, a DC power supply, an ammeter, and an upper clamping bar are sequentially conductively connected to form an open current detection circuit. When the upper clamping jaw clamps the upper clamping bar, the current detection circuit is closed.

[0009] Furthermore, the hanger also has multiple lower grippers arranged side-by-side along the conveying direction, the lower grippers being located below the upper grippers; the hanger clamping force detection device includes: The lower gripper pull test assembly, located above the movement path of the lower gripper, includes a lifting drive, a lower lifting plate, multiple pull force sensors, and multiple lower clamping bars. Each pull force sensor corresponds to one of the lower grippers. The lifting drive drives the lower lifting plate to move up and down. The length direction of the lower lifting plate is along the conveying direction of the hanger. All pull force sensors are fixed to the lower lifting plate. Each pull force sensor is connected to an upwardly extending lower clamping bar. When the lower clamping bar descends to its lowest point, it is clamped by the open lower gripper. The lower gripper opening assembly, located to the side of the movement path of the lower gripper, includes a lower horizontal drive, a lower strip push block, and a lower strip back plate. The lower strip back plate is located on the back of all the lower grippers on the hanger, and the lower strip push block is located on the front of all the lower grippers on the hanger. The lower horizontal drive drives the lower strip push block to move toward the lower strip back plate to open all the lower grippers. All pull-down force sensors send signals to the controller, which controls the movement of the lifting drive and the lower horizontal drive.

[0010] Furthermore, the electrical control box is equipped with a DC power supply and multiple ammeters. The lower clamping bar is conductive. A lower clamping jaw, a DC power supply, an ammeter, and a lower clamping bar are sequentially conductively connected to form an open current detection circuit. When the upper clamping jaw clamps the upper clamping bar, the current detection circuit is closed.

[0011] Furthermore, the electrical control box is also equipped with an alarm device for detecting abnormal tension and current, and the alarm device is electrically connected to the controller.

[0012] The beneficial effects of this utility model's technical solution are: After the upper grippers clamp the upper holding bars one by one, the upper lifting drive unit drives the upper lifting plate to descend. At this time, each upper gripper transmits a tension force to the upper tension sensor below through the upper holding bar, causing the upper tension sensor to output a tension signal. Because all upper support bars descend in the same way, there is no need to control the lifting individually; only one upper lifting drive unit is needed to drive the lifting. If the tension detected by all upper tension sensors increases to the preset normal range, it means that the clamping force of all upper grippers is normal. If the tension detected by a certain upper tension sensor fails to increase to the normal range, it means that there is a problem with the tension at that point, and the vertical conveyor line needs to be paused. The fixture can only operate normally after the problem is resolved. This ensures that the fixture can be put into use when the clamping force of all upper grippers is normal. Attached Figure Description

[0013] Figure 1 This is a diagram showing the relative positions of the clamping force detection device and the hanger before clamping in Example 1. Figure 2 This is a schematic diagram illustrating the detection principle of the clamping force detection device and the clamp after clamping in Example 1. Figure 3 This is a front view of the gripper tension test assembly and the fixture clamping state in Example 1; Figure 4 This is a front view of the upper gripper traction test assembly, the lower gripper traction test assembly, and the clamping state of the fixture in Example 2; Figure 5 This is a diagram showing the relative positions of the clamping force detection device and the hanger before clamping in Example 2.

[0014] The diagram is marked as follows: 1-Upper gripper tension test assembly, 11-Upper lifting drive component, 12-Upper lifting plate, 13-Upper tension sensor, 14-Upper clamping bar; 2-Upper gripper opening assembly, 21-Horizontal drive component, 22-Upper strip pusher block, 23-Upper strip back plate; 3-Electrical control box, 31-Controller, 32-DC power supply, 33-Ammeter, 34-Alarm; 4-Lower gripper tension test assembly, 41-Lifting drive component, 42-Lower lifting plate, 43-Lower tension sensor, 44-Lower clamping bar; 5-Lower gripper opening assembly, 51-Horizontal drive component, 52-Upper strip pusher block, 53-Upper strip back plate; 200-Hanging fixture, 201-Upper gripper, 202-Lower gripper. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to specific embodiments.

[0016] Example 1: like Figures 1 to 3 As shown, the present invention discloses a hanging clamping force detection device, which is located at the entrance of a vertical conveyor line. The vertical conveyor line includes multiple hanging fixtures 200 that move in the horizontal direction. Each hanging fixture 200 has multiple upper clamps 201 arranged side by side along the conveying direction. The hanging fixture clamping force detection device includes an upper clamp pulling test component 1, an upper clamp opening component 2, and an electrical control box 3.

[0017] like Figure 1 and Figure 2 As shown, the upper gripper tension test assembly 1 is located below the moving path of the upper gripper 201. It includes an upper lifting drive 11, an upper lifting plate 12, multiple upper tension sensors 13, and multiple upper clamping bars 14. The upper tension sensors 13 correspond one-to-one with the upper gripper 201. The upper lifting drive 11 drives the upper lifting plate 12 to move up and down. The length direction of the upper lifting plate 12 is along the conveying direction of the hanger 200. All the upper tension sensors 13 are fixed on the upper lifting plate 12. Each upper tension sensor 13 is connected to an upwardly extending upper clamping bar 14. When the upper clamping bar 14 rises to the highest point, it is clamped by the opened upper gripper 201.

[0018] like Figure 1 and Figure 2 As shown, the upper gripper opening assembly 2 is located on the side of the movement path of the upper gripper 201, and includes a horizontal drive member 21, an upper strip push block 22 and an upper strip back plate 23. The upper strip back plate 23 is located on the back of all the upper grippers 201 on the hanger, and the upper strip push block 22 is located on the front of all the upper grippers 201 on the hanger 200. The horizontal drive member 21 drives the upper strip push block 22 to move toward the upper strip back plate 23 to open all the upper grippers 201.

[0019] The upper gripper opening assembly 2 abuts against the back of the fixed gripper of the upper gripper 201 via the upper strip-shaped back plate 23. The horizontal drive component 21 drives the upper strip-shaped push block 22 to push the movable gripper of the upper gripper 201, thus opening it. Because multiple side-by-side upper grippers 201 need to be opened during the test, both the upper strip-shaped push block 22 and the upper strip-shaped back plate 23 are relatively long strip-shaped components in the horizontal direction. The upper gripper 201 consists of a movable gripper and a fixed gripper hinged together, with their backs abutting against each other through an elastic element, thereby naturally generating a clamping force. After the upper gripper 201 is opened, the upper clamping bar 14 can be inserted into it. After the upper strip-shaped push block 22 retracts to its original position, the upper gripper 201 can clamp the end of the upper clamping bar 14. The upper lifting plate 12, multiple upper tension sensors 13, and multiple upper clamping bars 14 constitute a whole, which can move up and down under the drive of the upper lifting drive component 11. After the upper grippers 201 clamp the upper clamping bars 14 one by one, the upper lifting drive 11 drives the upper lifting plate 12 to descend. At this time, each upper gripper 201 transmits a tension force to the upper tension sensor 13 below through the upper clamping bar 14, causing the upper tension sensor 13 to output a tension signal. Because all the upper support bars 14 descend in the same way, there is no need to control the lifting individually; only one upper lifting drive 11 is needed to drive the lifting. If the tension detected by all the upper tension sensors 13 can increase to the preset normal range, it means that the clamping force of all the upper grippers 201 is normal. If the tension detected by a certain upper tension sensor 13 cannot increase to the normal range, it means that there is a problem with the tension at that point, and the vertical conveyor line needs to be paused. The fixture 200 can only operate normally after the problem is resolved. This ensures that the fixture 200 can be put into use when the clamping force of each upper gripper 201 is normal. After the inspection is completed, the upper gripper 201 releases the upper clamping bar 14, and the upper clamping bar 14 descends to its lowest point (below the moving path of the upper gripper 201), so as not to interfere with the passage of the hanger 200.

[0020] like Figures 1 to 3 As shown, the electrical control box 3 includes a controller 31. All the upper tension sensors 13 send signals to the controller 31. The controller 31 controls the movement of the lifting drive 11 and the horizontal drive 21, as well as the movement and stopping of the hanger 200. The electrical control box 3 is equipped with a DC power supply 32 and multiple ammeters 33. The upper clamping bar 14 is conductive. An upper clamping jaw 201, the DC power supply 32, an ammeter 33, and an upper clamping bar 14 are sequentially conductively connected to form an open current detection circuit. When the upper clamping jaw 201 clamps the upper clamping bar 14, the current detection circuit is closed.

[0021] The controller 31 is used to automate the above process. For the controller 31, the upper tension sensor 13 is the input component, and the upper lifting drive 11, the horizontal drive 21, and the moving mechanism of the hanger 200 are the output components. Without the current detection circuit, the controller 31 can still ensure the safe use of the hanger 200 based solely on the monitoring feedback of the tension. With the addition of the current detection circuit, it can further determine whether the upper grippers 201 are all properly energized, thus ensuring the conductivity of the hanger 200 when used on the electroplating line.

[0022] like Figure 2 As shown, the electrical control box 3 is also equipped with an alarm 34 for alarming abnormal tension and current. The alarm 34 is electrically connected to the controller 31.

[0023] When the clamping force detection device detects abnormal clamping force (inability to clamp tightly) or abnormally low current (open circuit in upper clamping jaw 201), it should not only automatically stop the operation of the vertical conveyor line, but also promptly remind the operators on site to troubleshoot the problem in order to avoid wasting production time.

[0024] Example 2: like Figure 4 and Figure 5 As shown, the difference from Embodiment 1 is that the hanger 200 also has a plurality of lower grippers 202 arranged side by side along the conveying direction, the lower grippers 202 being located below the upper grippers 201; the hanger clamping force detection device also includes a lower gripper pull test assembly 4 and a lower gripper opening assembly 5.

[0025] The lower gripper pull test assembly 4 is located above the movement path of the lower gripper and includes a lifting drive 41, a lower lifting plate 42, multiple pull force sensors 43 and multiple lower clamping bars 44. The pull force sensors 43 correspond one-to-one with the lower grippers 202. The lifting drive 41 drives the lower lifting plate 42 to move up and down. The length direction of the lower lifting plate 42 is along the conveying direction of the hanger 200. All pull force sensors 43 are fixed on the lower lifting plate 42. Each pull force sensor 43 is connected to an upwardly extending lower clamping bar 44. When the lower clamping bar 44 descends to the lowest point, it is clamped by the opened lower gripper 202. The lower gripper opening assembly 5 is located on the side of the movement path of the lower gripper 202, and includes a lower horizontal drive 51, a lower strip push block 52 and a lower strip back plate 53. The lower strip back plate 53 is located on the back of all the lower grippers 202 on the hanger 200, and the lower strip push block 52 is located on the front of all the lower grippers 202 on the hanger 200. The lower horizontal drive 51 drives the lower strip push block 52 to move toward the lower strip back plate 53 to open all the lower grippers 202. All pull-down force sensors send signals to controller 31, which controls the movement of lifting drive 41 and lower horizontal drive 51.

[0026] If the hanger 200 has a rectangular structure, it will generally include many lower grippers 202. These lower grippers 202 also need to be tested for clamping force. Therefore, the structure of the lower gripper pull test assembly 4 is basically the same as that of the upper gripper pull test assembly 1, only the direction is reversed. Similarly, the lower gripper opening assembly 5 has the same function and structure as the upper gripper opening assembly 2, so it will not be described in detail.

[0027] The electrical control box is equipped with a DC power supply 32 and multiple ammeters 33. A lower clamp 202, the DC power supply 32, an ammeter 33 and a lower clamping bar 44 are sequentially electrically connected to form an open current detection circuit. When the upper clamp holds the upper clamping bar, the current detection circuit is closed.

[0028] The current detection principle of the lower gripper 202 is the same as that of the upper gripper 201, so it will not be described again.

[0029] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A device for detecting the clamping force of a hanger, disposed at the entrance of a vertical conveyor line, the vertical conveyor line comprising a plurality of hangers that move horizontally, each hanger having a plurality of upper grippers arranged side-by-side along the conveying direction, characterized in that... The clamping force detection device for the hanger includes: The upper gripper tension test assembly, located below the moving path of the upper gripper, includes an upper lifting drive, an upper lifting plate, multiple upper tension sensors, and multiple upper clamping bars. Each upper tension sensor corresponds to one of the upper grippers. The upper lifting drive drives the upper lifting plate to move up and down. The length direction of the upper lifting plate is along the conveying direction of the hanger. All upper tension sensors are fixed to the upper lifting plate. Each upper tension sensor is connected to an upwardly extending upper clamping bar. When the upper clamping bar rises to its highest point, it is clamped by the open upper gripper. The upper gripper opening assembly, located to the side of the movement path of the upper gripper, includes a horizontal drive, an upper strip push block, and an upper strip back plate. The upper strip back plate is located on the back of all the upper grippers on the hanger, and the upper strip push block is located on the front of all the upper grippers on the hanger. The horizontal drive drives the upper strip push block to move toward the upper strip back plate to open all the upper grippers. The electrical control box includes a controller, to which all upward force sensors send signals. The controller controls the movement of the lifting drive and the horizontal drive, as well as the movement and stopping of the hanger.

2. The clamping force detection device for the hanger according to claim 1, characterized in that: The electrical control box is equipped with a DC power supply and multiple ammeters. The upper clamping bar is conductive. An upper jaw, a DC power supply, an ammeter, and an upper clamping bar are sequentially conductively connected to form an open current detection circuit. When the upper jaw clamps the upper clamping bar, the current detection circuit is closed.

3. The clamping force detection device for the hanger according to claim 1, characterized in that: The hanger also has multiple lower grippers arranged side-by-side along the conveying direction, the lower grippers being located below the upper grippers; the hanger clamping force detection device includes: The lower gripper pull test assembly, located above the movement path of the lower gripper, includes a lifting drive, a lower lifting plate, multiple pull force sensors, and multiple lower clamping bars. Each pull force sensor corresponds to one of the lower grippers. The lifting drive drives the lower lifting plate to move up and down. The length direction of the lower lifting plate is along the conveying direction of the hanger. All pull force sensors are fixed to the lower lifting plate. Each pull force sensor is connected to an upwardly extending lower clamping bar. When the lower clamping bar descends to its lowest point, it is clamped by the open lower gripper. The lower gripper opening assembly, located to the side of the movement path of the lower gripper, includes a lower horizontal drive, a lower strip push block, and a lower strip back plate. The lower strip back plate is located on the back of all the lower grippers on the hanger, and the lower strip push block is located on the front of all the lower grippers on the hanger. The lower horizontal drive drives the lower strip push block to move toward the lower strip back plate to open all the lower grippers. All pull-down force sensors send signals to the controller, which controls the movement of the lifting drive and the lower horizontal drive.

4. The clamping force detection device for the hanger according to claim 3, characterized in that: The electrical control box is equipped with a DC power supply and multiple ammeters. The lower clamping bar is conductive. A lower clamping jaw, a DC power supply, an ammeter, and a lower clamping bar are sequentially conductively connected to form an open current detection circuit. When the upper clamping jaw clamps the upper clamping bar, the current detection circuit is closed.

5. The clamping force detection device for hangers according to claim 2 or 4, characterized in that: The electrical control box is also equipped with an alarm device for detecting abnormal tension and current, and the alarm device is electrically connected to the controller.

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