High-precision telescopic adjusting device and display module laminating device
By combining a bracket, telescopic rod mechanism, and piezoelectric components, the high-precision telescopic adjustment device meets multiple requirements, solves the shortcomings of traditional devices in terms of stroke and accuracy, and is suitable for high-precision bonding and alignment of display modules.
Patent Information
- Application Number
- CN202522179726.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-15
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-10-15
AI Technical Summary
Existing telescopic adjustment devices cannot simultaneously meet the requirements of a wide range of strokes and micron-level accuracy, and are sensitive to environmental changes, leading to decreased positioning accuracy and sealing problems.
A high-precision telescopic adjustment device is adopted, which includes a bracket, telescopic rod mechanism, piezoelectric components and control module. The telescopic rod mechanism realizes large stroke adjustment, and the telescopic deformation of the piezoelectric components realizes high-precision adjustment. Combined with vacuum adsorption and positioning camera, dynamic alignment adjustment is performed.
It meets the dual requirements of a wide range of strokes and micron-level precision, making it suitable for high-precision bonding and alignment of display modules, and improving the environmental adaptability and precision stability of the adjustment device.
Smart Images
Figure CN223609047U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to display technical field, concretely relates to a high accuracy telescopic adjusting device and display module laminating device. BACKGROUND
[0002] The high-precision lamination alignment of the display module is a core process link in the manufacturing process of high-end display equipment, and the alignment precision directly determines the display effect, structural reliability and service life of the product. Especially in the advanced manufacturing fields such as OLED screen packaging and Micro-LED mass transfer, the alignment precision needs to be stably controlled within 5 μm, and extremely strict requirements are put forward for the stroke range, precision retention and environmental adaptability of the adjusting device.
[0003] At present, the telescopic adjusting device widely used in the industry relies on a single-stage adjusting mode to realize linear displacement, which can provide stroke adjustment within a certain range, but it is difficult to meet the dual requirements of large stroke range and micron-level precision. For example, when the traditional telescopic rod structure realizes large stroke adjustment, the positioning precision is often reduced due to mechanical clearance or elastic deformation, and when high-precision adjustment is pursued, the stroke range is insufficient. Moreover, the telescopic rod structure is sensitive to environmental vibration and temperature change, and the flatness of the installation base and the rigidity of the fixed support are extremely high, further increasing the process complexity. In addition, although the sleeve type telescopic joint structure can expand the adjusting stroke, it generally relies on packing sealing or rubber ring sealing, which has the problems of poor sealing performance, aging of packing, etc. After long-term use, the precision drift occurs, and the maintenance cost is high. UTILITY MODEL CONTENTS
[0004] The utility model wants to solve the technical problem to provide a high accuracy telescopic adjusting device and display module laminating device, which can not only improve the adjusting range, but also improve the adjusting precision, and is suitable for high-precision lamination alignment of display module. The technical scheme adopted is as follows:
[0005] A high-precision telescopic adjusting device, characterized by comprising a support, a telescopic rod mechanism, a piezoelectric component, a pressing head and a first control module; the telescopic rod mechanism comprises an outer guide sleeve, a telescopic rod and a front and rear position adjusting mechanism, the outer guide sleeve and the front and rear position adjusting mechanism are both installed on the support, the outer guide sleeve is arranged in the front and rear direction, the rear part of the telescopic rod is slidably installed on the inner side of the outer guide sleeve, the front end of the telescopic rod protrudes from the front side of the outer guide sleeve, and the telescopic rod is connected with the power output end of the front and rear position adjusting mechanism; the rear end of the piezoelectric component is connected with the front end of the telescopic rod, and the pressing head is connected with the front end of the piezoelectric component; the main body of the piezoelectric component comprises at least one piezoelectric crystal, and the first control module is used for controlling the telescopic deformation of the piezoelectric crystal in the front and rear direction.
[0006] The high-precision telescopic adjusting device can drive the telescopic rod to slide forward or backward relative to the outer sleeve to change the overall length of the outer sleeve and the telescopic rod, so as to realize the large-stroke adjustment of the pressing head, and then the first control module is used to control the telescopic deformation of the piezoelectric crystal in the piezoelectric component in the front-back direction, so as to realize the high-precision adjustment of the small-stroke of the pressing head, so that the high-precision telescopic adjusting device can not only improve the adjustment range, but also improve the adjustment precision, and can meet the dual requirements of large-stroke and micron-level precision, and is suitable for high-precision fitting alignment of a display module.
[0007] As a preferred scheme of the utility model, the main body of the piezoelectric component comprises a plurality of piezoelectric crystals which are sequentially stacked from front to back.
[0008] As a preferred scheme of the utility model, the telescopic deformation of the piezoelectric component is 100-200 mu m.
[0009] As a preferred scheme of the utility model, the stroke control precision of the piezoelectric component is 1-10 mu m.
[0010] As a preferred scheme of the utility model, the front-back position adjusting mechanism comprises an adjusting motor and an adjusting screw rod, the adjusting motor is installed on the support, the adjusting screw rod is fixedly installed on the output shaft of the adjusting motor, the rear end face of the telescopic rod is provided with a front-back threaded hole, the adjusting screw rod is in the threaded hole and is engaged with the internal thread of the threaded hole; the adjusting motor is electrically connected with the corresponding output end of the first control module. Specifically, the adjusting motor adopts a stepping motor, the stroke of the telescopic rod is 1-3 cm, and the stroke control precision is 0.1 mm. When working, under the control of the first control module, the adjusting motor drives the adjusting screw rod to rotate forward or reversely, and the telescopic rod is driven to slide forward or backward relative to the outer sleeve by the engagement relationship between the adjusting screw rod and the threaded hole on the telescopic rod.
[0011] As a further preferred scheme of the utility model, the first control module comprises a first controller and a second controller, the first controller is used to control the telescopic deformation of the piezoelectric crystal in the front-back direction, and the second controller is used to control the start-stop and rotation direction of the adjusting motor.
[0012] Generally, the front-back position adjusting mechanism further comprises a limiting device, the limiting device can adopt a mechanical stroke switch, which is arranged on the inner wall of the outer sleeve and is in contact with the outer wall of the telescopic rod to trigger; the limiting device can also adopt a magnetic induction switch, which detects the magnetic mark position of the telescopic rod through a Hall element.
[0013] The utility model discloses still provide a display module laminating device, including frame, upper roof, be used for driving the lifting mechanism of upper roof lifting, be equipped with the placing groove on the frame, and lifting mechanism installs on the frame, and upper roof sets up the just above of placing groove, and the bottom of upper roof has vacuum adsorption surface, its characterized in that: display module laminating device still includes a plurality of high accuracy telescopic adjusting devices, each high accuracy telescopic adjusting device is along the periphery of placing groove and is set up in proper order, and the support of high accuracy telescopic adjusting device installs on frame, and the top pressure head of high accuracy telescopic adjusting device is towards placing groove. When working, can place the first screen body in placing groove, and place the second screen body on the vacuum adsorption surface of upper roof, then, utilize the top pressure head of each high accuracy telescopic adjusting device to carry out dynamic, real -time alignment adjustment to the first screen body in placing groove, make the second screen body with the first screen body realize accurate alignment, finally, by lifting mechanism drive upper roof and the second screen body do descending movement, utilize the mode of upper roof to press down to realize the automatic lamination of second screen body and the first screen body, obtain laminated display module, and realize high -precision alignment lamination.
[0014] Upper roof generally sets up vacuum inner chamber in its inside, and connects vacuum inner chamber through gas hose to draw vacuum device, and the bottom of upper roof is equipped with a plurality of adsorption holes that communicate with vacuum inner chamber. The display module laminating device works, and the vacuum inner chamber is drawn by the vacuum device through the gas hose, and the negative pressure is formed at each adsorption hole in the bottom of the upper roof, so that the vacuum adsorption surface can be formed on the bottom of the upper roof; when the upper laminated object is close to the bottom of the upper roof, the upper laminated object will be adsorbed by the suction force generated by each adsorption hole of the upper roof to realize fixation. The upper roof can also be provided with a plurality of vacuum suction cups on the bottom to realize the adsorption and fixation of the upper laminated object.
[0015] As a preferred scheme of the utility model, the lifting mechanism includes a lifting cylinder, the cylinder body of the lifting cylinder is installed on the frame, and the piston rod of the lifting cylinder faces downward and is connected with the upper roof. By adopting this structure, the upper roof can be driven to rise or descend by a certain height through the extension and contraction of the piston rod of the lifting cylinder.
[0016] As a preferred scheme of the utility model, the display module laminating device further includes a second control module and a plurality of alignment cameras, each alignment camera is arranged above different parts of the placing groove, the camera of each alignment camera faces downward, and each alignment camera is electrically connected with the corresponding output end of the second control module. In the working process of the display module laminating device, the second control module can control each high-precision telescopic adjusting device to dynamically and real-timely adjust the alignment of the first screen body in the placing groove according to the alignment information (such as the corner pixels of the first screen body and the ink pattern features of the second screen body) captured by the camera of each alignment camera, so as to realize high-precision alignment lamination.
[0017] Compared with the prior art, this utility model has the following advantages:
[0018] (1) The high-precision telescopic adjustment device provided by this utility model can achieve a large stroke adjustment through the telescopic rod mechanism, and can be used by the first control module to control the telescopic deformation of the piezoelectric crystal in the piezoelectric component in the front-back direction, so as to achieve a small stroke high-precision adjustment, while meeting the dual requirements of a large stroke and micron-level precision.
[0019] (2) The display module bonding device provided by this utility model can use the top pressure head of each high-precision telescopic adjustment device to dynamically and in real time adjust the first screen in the placement slot, meet the dual requirements of large range of stroke and micron-level precision, and is suitable for high-precision bonding and alignment of display modules. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of the high-precision telescopic adjustment device provided in a preferred embodiment of the present invention.
[0021] Figure 2 This is a schematic diagram of the structure of the display module bonding device provided in a preferred embodiment of the present invention.
[0022] Figure 3 yes Figure 2 The diagram shown illustrates the interaction between the various high-precision telescopic adjustment devices and the placement slots in the display module bonding device. Detailed Implementation
[0023] like Figure 1 As shown, the high-precision telescopic adjustment device 10 provided in this embodiment includes a bracket 1, a telescopic rod mechanism 2, a piezoelectric component 3, a top pressure head 4, and a first control module 5; the telescopic rod mechanism 2 includes an outer guide sleeve 21, a telescopic rod 22, an adjusting motor 23, and an adjusting screw 24. The outer guide sleeve 21 and the adjusting motor 23 are both mounted on the bracket 1. The outer guide sleeve 21 is arranged in the front-rear direction. The rear part of the telescopic rod 22 can be slidably mounted on the inner side of the outer guide sleeve 21, and the front end of the telescopic rod 22 extends out of the front side of the outer guide sleeve 21; the main body of the piezoelectric component 3 includes at least one piezoelectric crystal 31, and the rear end of the piezoelectric component 3 is connected to the outer guide sleeve 21. The front end of the telescopic rod 22 is connected to the front end of the top pressure head 4 and the piezoelectric component 3; the rear end face of the telescopic rod 22 is provided with a threaded hole 221 running in the front-back direction, and the adjusting screw 24 is fixedly installed on the output shaft of the adjusting motor 23. The adjusting screw 24 is located in the threaded hole 221 and meshes with the internal thread of the threaded hole 221; the first control module 5 includes a first controller 51 and a second controller 52. The first controller 51 is used to receive external commands and control the telescopic deformation of the piezoelectric crystal 31 in the front-back direction, and the second controller 52 is used to receive external commands and control the start, stop and direction of the adjusting motor.
[0024] In the embodiment, the main body of the piezoelectric component 3 comprises a plurality of piezoelectric crystals 31 stacked in sequence from front to back.
[0025] In the embodiment, the piezoelectric component 3 has a telescopic deformation of 100-200 μm, and the stroke control precision of the piezoelectric component 3 is 1-10 μm.
[0026] In the embodiment, the adjusting motor 23 is a step motor, and the stroke of the telescopic rod 22 is 1-3 cm, and the stroke control precision is 0.1 mm.
[0027] The high-precision telescopic adjusting device 10 provided by the embodiment comprises a limiting device (not shown in the figure), which can be a mechanical stroke switch arranged on the inner wall of the outer guide sleeve 21 and in contact with the outer wall of the telescopic rod 22 to trigger; or a magnetic induction switch which detects the magnetic marker position of the telescopic rod 22 through a Hall element.
[0028] The working principle of the high-precision telescopic adjusting device 10 will be briefly described as follows:
[0029] In operation, an external instruction can be sent to the first controller 52 to control the telescopic deformation of each piezoelectric crystal 31 in the piezoelectric component 3 in the front-back direction, so as to realize the high-precision adjustment of the small stroke of the pressing head 4; an external instruction can be sent to the second controller 51 to control the adjusting motor 23 to drive the adjusting screw 24 to rotate forward or reversely, and the telescopic rod 22 is driven to slide forward or reversely relative to the outer guide sleeve 21 to change the overall length of the outer guide sleeve 21 and the telescopic rod 22, so as to realize the adjustment of the large stroke of the pressing head 4, which not only improves the adjustment range, but also improves the adjustment precision, and meets the dual requirements of large stroke and micron-level precision, and is suitable for the high-precision fitting alignment of display modules.
[0030] Reference Figure 2 , Figure 3The display module laminating device provided by the embodiment comprises a plurality of high-precision telescopic adjusting devices 10, a machine base 20, an upper top plate 30, a lifting cylinder 40, a second control module (not shown in the figure) and a plurality of alignment cameras 60. The machine base 20 is provided with a placing groove 201, and each high-precision telescopic adjusting device 10 is sequentially arranged along the outer periphery of the placing groove 201. The support 1 of the high-precision telescopic adjusting device 10 is installed on the machine base 20, and the top pressing head 4 of the high-precision telescopic adjusting device 10 faces the placing groove 201. The upper top plate 30 is arranged directly above the placing groove 201, and the bottom of the upper top plate 30 is provided with a vacuum adsorption surface 301. The cylinder body of the lifting cylinder 40 is installed on the machine base 20, the piston rod of the lifting cylinder 40 faces downward and is connected with the upper top plate 30. Each alignment camera 60 is arranged directly above different parts of the placing groove 201, and the camera of each alignment camera 60 faces downward. Each alignment camera 60 is electrically connected with the corresponding input and output end of the second control module, and each high-precision telescopic adjusting device 10 is electrically connected with the corresponding output end of the second control module.
[0031] The working principle of the display module laminating device will be briefly described below.
[0032] In work, the first screen body 100 can be placed in the placing groove 201, and the second screen body 200 can be placed on the vacuum adsorption surface 301 of the upper top plate 30. Then, the second control module can control the high-precision telescopic adjusting device 10 to dynamically and real-timely adjust the alignment of the first screen body 100 in the placing groove 201 according to the alignment information (such as the corner pixel of the first screen body 100 and the ink pattern feature of the second screen body 200) captured by the camera of each alignment camera 60, so that the second screen body 200 and the first screen body 100 are precisely aligned. Finally, the upper top plate 30 and the second screen body 200 are driven to move downward by the lifting cylinder 40, and the automatic lamination of the second screen body 200 and the first screen body 100 is realized by the downward pressing of the upper top plate 30, so that the high-precision alignment and lamination are realized, and the laminated display module is obtained.
[0033] In addition, it should be noted that the specific embodiments described in the specification can have different names and the like, and any equivalent or simple changes made according to the structure, features and principles of the patent concept are included in the protection scope of the patent. The skilled in the art of the present patent can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the structure of the present patent or exceed the scope defined by the present claims, which shall belong to the protection scope of the present patent.
Claims
1. A high-precision telescopic adjustment device, characterized in that: The high-precision telescopic adjusting device comprises a support, a telescopic rod mechanism, a piezoelectric component, a pressing head and a first control module; the telescopic rod mechanism comprises an outer guide sleeve, a telescopic rod and a front-rear position adjusting mechanism, the outer guide sleeve and the front-rear position adjusting mechanism are both mounted on the support, the outer guide sleeve is arranged in the front-rear direction, the rear part of the telescopic rod is slidably mounted on the inner side of the outer guide sleeve, the front end of the telescopic rod extends out of the front side of the outer guide sleeve, and the telescopic rod is connected with the power output end of the front-rear position adjusting mechanism; the rear end of the piezoelectric component is connected with the front end of the telescopic rod, and the pressing head is connected with the front end of the piezoelectric component; the main body of the piezoelectric component comprises at least one piezoelectric crystal, and the first control module is used for controlling the telescopic deformation of the piezoelectric crystal in the front-rear direction.
2. The high-precision telescopic adjusting device according to claim 1, characterized in that: The main body of the piezoelectric component comprises a plurality of piezoelectric crystals which are sequentially and superposedly arranged from front to rear.
3. The high-precision telescopic adjusting device according to claim 1, characterized in that: The telescopic deformation amount of the piezoelectric component is 100-200 μm.
4. The high-precision telescopic adjusting device according to claim 1, characterized in that: The stroke control precision of the piezoelectric component is 1-10 μm.
5. The high-precision telescopic adjusting device according to claim 1, characterized in that: The front-rear position adjusting mechanism comprises an adjusting motor and an adjusting screw rod, the adjusting motor is mounted on the support, the adjusting screw rod is fixedly mounted on the output shaft of the adjusting motor, the rear end surface of the telescopic rod is provided with a front-rear running threaded hole, the adjusting screw rod is in the threaded hole and is engaged with the internal thread of the threaded hole; the adjusting motor is electrically connected with the corresponding output end of the first control module.
6. A high-precision telescopic adjustment device according to claim 5, characterized in that: The first control module comprises a first controller and a second controller, the first controller is used for controlling the telescopic deformation of the piezoelectric crystal in the front-rear direction, and the second controller is used for controlling the start-stop and steering of the adjusting motor.
7. A display module laminating device, comprising a base, an upper top plate, a lifting mechanism for driving the upper top plate to lift, the base is provided with a placing groove, the lifting mechanism is installed on the base, the upper top plate is arranged directly above the placing groove, and the bottom of the upper top plate is provided with a vacuum adsorption surface; characterized in that: The display module laminating device further comprises a plurality of high-precision telescopic adjusting devices as claimed in any one of claims 1-6, each high-precision telescopic adjusting device is sequentially arranged along the outer periphery of the placing groove, the support of the high-precision telescopic adjusting device is mounted on the machine base, and the pressing head of the high-precision telescopic adjusting device faces the placing groove. 8.The display module laminating device according to claim 7, wherein: The lifting mechanism comprises a lifting cylinder, the cylinder body of the lifting cylinder is mounted on the machine base, and the piston rod of the lifting cylinder faces downward and is connected with the upper top plate.
9. The display module bonding apparatus according to claim 7, wherein: The display module laminating device further comprises a second control module and a plurality of alignment cameras, each alignment camera is arranged directly above different parts of the placing groove, the camera of each alignment camera is arranged downward, and each alignment camera is electrically connected with the corresponding output end of the second control module.