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CN-121977775-A - Vibration detector and application thereof in backlight display module production

CN121977775ACN 121977775 ACN121977775 ACN 121977775ACN-121977775-A

Abstract

The invention relates to the technical field of vibration detection, in particular to a vibration detector and application thereof in the production of backlight display modules, and the vibration detector comprises a base, a platform arranged on the base, a frame body arranged in the base, a plurality of movable seats fixed with the platform and a driving arm arranged on the base in a sliding manner, wherein the driving arm can be driven by an electromagnetic driving device arranged on the base to reciprocate along the length direction of the base.

Inventors

  • LI DANQI
  • YAO BIN

Assignees

  • 常州天禄显示科技有限公司

Dates

Publication Date
20260505
Application Date
20260403

Claims (9)

  1. 1. A vibration detector comprises a machine base and a platform arranged on the machine base; Characterized by further comprising: The frame body is arranged in the frame, a plurality of movable seats fixed with the platform are slidably arranged on the frame body, the frame is also provided with a driving arm, and the driving arm can be driven by an electromagnetic driving device arranged on the frame to reciprocate along the length direction of the frame; The sliding block is in sliding fit with the driving arm, the sliding block is connected with the frame body through a connecting structure, a cross arm is fixed on the side part of the sliding block, the cross arm is in sliding connection with a cross rod arranged in the machine base, and the cross rod can be driven by a linear driving module arranged in the machine base to drive the sliding block to lift, so that the sliding block can be respectively positioned at a high position, a middle position and a low position which are distributed from top to bottom; The movable seat is provided with a guide plate arranged in the machine seat through an assembly mechanism, and the side part of the movable seat is provided with a roller matched with the guide plate; when the sliding block is positioned at a high position, the driving arm can drive the frame body to drive the platform to reciprocate along the length direction of the machine base through the connecting structure, the movable seat and the frame body keep relatively static, and at the moment, the platform is in a first vibration mode; when the sliding block moves towards the middle position, the assembly mechanism drives the guide plate to move along the width direction of the machine base, when the sliding block is positioned at the middle position, the driving arm drives the platform to reciprocate along the length direction of the machine base, the idler wheels are matched with the guide plate to drive the movable base to slide relative to the frame body, and at the moment, the platform is in a second vibration mode of compounding the length direction and the width direction of the machine base; When the sliding block is positioned at a low position, the connecting structure is disconnected, the driving arm moves, the frame body is static, the guide plate piece moves back and forth along the length direction of the machine base and is matched with the roller, the movable seat is driven by the movable seat to drive the platform to move back and forth along the width direction of the machine base, and at the moment, the platform is in a third vibration mode.
  2. 2. The vibration detecting machine according to claim 1, wherein the guide plate is provided with a through hole adapted to the roller, the through hole comprises a first wide groove arranged along the length direction of the machine base, a second wide groove connected with the first wide groove and perpendicular to the first wide groove, and a third wide groove and a fourth wide groove connected with one end of the second wide groove far away from the first wide groove, the third wide groove and the fourth wide groove are obliquely arranged, and the third wide groove and the fourth wide groove are symmetrical with respect to the second wide groove; when the sliding block is at a high position, the roller is positioned in the first wide groove, and when the sliding block is at a middle position or a low position, the roller is positioned at the joint of the second wide groove, the third wide groove and the fourth wide groove.
  3. 3. The vibration detecting machine according to claim 1, wherein the connecting structure comprises a driving arm fixed to the slider and a sleeve plate fixed to a side portion of the frame body and adapted to the driving arm, the driving arm is in a U-like configuration, when the slider is in a high position and a middle position, one end of the driving arm away from the slider is kept in a sliding connection with the sleeve plate, and when the slider is switched from the middle position to the low position, one end of the driving arm away from the slider is pulled out of the sleeve plate.
  4. 4. The vibration detecting machine according to claim 1, wherein the assembling mechanism comprises a guide seat fixed in the machine base and a long slat slidingly embedded in the upper portion of the guide seat, the guide plate is connected with a telescopic component arranged on the long slat, the telescopic component is triggered in the process that the sliding block is switched from a high position to a middle position, and the guide plate can be driven to move towards the guide seat; And a locking structure is further arranged between the long strip plate and the guide seat.
  5. 5. The vibration detecting machine of claim 4, wherein the telescopic assembly includes a guide arm fixedly mounted to the slat and a telescopic arm slidably engaged with the guide arm, the guide plate member being fixed to an upper portion of the telescopic arm, the telescopic arm being connected to the cross bar by a follower structure.
  6. 6. The vibration detecting machine according to claim 5, wherein the follower structure comprises a sliding sleeve slidingly connected with the guide arm, and a support arm fixed on the side part of the sliding sleeve and slidingly connected with the cross rod, the telescopic arm is fixedly provided with a follower plate, and the follower plate is provided with an inclined slot and a vertical slot which are connected with each other; the side part of the support arm is provided with a convex column matched with the inclined groove and the vertical groove, the sliding block is switched from a high position to a middle position in the process, the cross rod drives the support arm to move downwards, the convex column slides in the inclined groove, and the follow-up plate can be caused to drive the telescopic arm and the guide plate to move towards the guide seat.
  7. 7. The vibration detector according to claim 4, wherein the locking structure comprises a plurality of upright posts fixed in the guide seat and a pressure receiving plate which is connected with the plurality of upright posts in a sliding manner and is positioned below the long slat, a cylindrical spring is sleeved on the periphery of the upright posts, and two ends of the cylindrical spring are respectively connected with the inner wall of the guide seat and the pressure receiving plate; The upper portion of the pressure receiving plate is fixedly provided with a plurality of locking bulges, the long strip plate is provided with a plurality of lock holes matched with the locking bulges, and the unlocking rod piece fixed with the cross rod can apply pressure to the pressure receiving plate in the process that the sliding block is switched from the middle position to the low position, so that the locking bulges are pulled out of the lock holes.
  8. 8. The vibration detecting machine according to claim 7, wherein two lateral protruding portions are further fixedly arranged on the side portion of the long strip plate, protruding blocks are fixedly arranged on the cross arm, gaps matched with the protruding blocks are reserved between the two lateral protruding portions, and the protruding blocks enter the gaps in the process that the sliding block is switched from the middle position to the low position.
  9. 9. Use of a vibration detector according to any one of claims 1-8 in the production of a backlight display module.

Description

Vibration detector and application thereof in backlight display module production Technical Field The invention relates to the technical field of vibration detection, in particular to a vibration detector and application thereof in production of backlight display modules. Background The backlight display module is a core optical component of a liquid crystal display system, and mainly comprises a light source, a light guide plate, an optical film, a reflecting sheet, a rubber frame, a driving circuit and the like, and has the function of providing a uniform and stable surface light source for an LCD panel. The backlight display module must go through a strict vibration detection link in the production process, and the core principle of vibration detection is based on an electromagnetic driving mechanism that a current-carrying conductor is subjected to electromagnetic force action in a magnetic field to generate mechanical motion, and the current direction of a coil is periodically switched through a control system, so that the electromagnetic force is alternately changed, the table surface of a vibration table is driven to realize accurate reciprocating vibration, the mechanical stress born by a product in the actual working condition is simulated, and potential defects such as welding false welding, component loosening, poor contact of a connector and the like are screened. However, due to the mechanical structural characteristics of the traditional electromagnetic vibration table, the vibration direction is usually limited in a single direction, the backlight display module only bears reciprocating impact along the fixed direction in the whole detection period, when welding defective points (such as LED welding spot virtual welding, FPC golden finger welding defect and the like) exist in the module, and the defect orientation is just parallel to the vibration direction or the included angle is smaller, the vibration stress is difficult to form an effective shearing or stripping effect on a defect interface, and the defective points cannot show electric performance fluctuation or physical structure loosening due to weak stress, so that the recognition of a detection system is successfully avoided, and the accuracy of a detection result is not ideal. Disclosure of Invention The invention aims to provide a vibration detector and application thereof in the production of backlight display modules so as to solve the problems in the background technology. In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a vibration detection machine, includes the frame and locates the platform on the frame, still includes: The frame body is arranged in the frame, a plurality of movable seats fixed with the platform are slidably arranged on the frame body, the frame is also provided with a driving arm, and the driving arm can be driven by an electromagnetic driving device arranged on the frame to reciprocate along the length direction of the frame; The sliding block is in sliding fit with the driving arm, the sliding block is connected with the frame body through a connecting structure, a cross arm is fixed on the side part of the sliding block, the cross arm is in sliding connection with a cross rod arranged in the machine base, and the cross rod can be driven by a linear driving module arranged in the machine base to drive the sliding block to lift, so that the sliding block can be respectively positioned at a high position, a middle position and a low position which are distributed from top to bottom; The movable seat is provided with a guide plate arranged in the machine seat through an assembly mechanism, and the side part of the movable seat is provided with a roller matched with the guide plate; when the sliding block is positioned at a high position, the driving arm can drive the frame body to drive the platform to reciprocate along the length direction of the machine base through the connecting structure, the movable seat and the frame body keep relatively static, and at the moment, the platform is in a first vibration mode; when the sliding block moves towards the middle position, the assembly mechanism drives the guide plate to move along the width direction of the machine base, when the sliding block is positioned at the middle position, the driving arm drives the platform to reciprocate along the length direction of the machine base, the idler wheels are matched with the guide plate to drive the movable base to slide relative to the frame body, and at the moment, the platform is in a second vibration mode of compounding the length direction and the width direction of the machine base; When the sliding block is positioned at a low position, the connecting structure is disconnected, the driving arm moves, the frame body is static, the guide plate piece moves back and forth along the length direction of the machine base and is matched wi