Manual fine adjustment mechanism

Abstract

The utility model provides a manual fine adjustment mechanism which comprises a fixing assembly, a sliding block, a fine adjustment screw, a fine adjustment nut, a Y-direction elastic plunger, a Z-direction elastic plunger and an X-direction spring. The fixing assembly comprises a fixing base and a cover plate, and the sliding block is clamped between the fixing base and the cover plate in a sliding mode. The fine adjustment nut is arranged to synchronously slide along the X direction with the sliding block but cannot rotate relative to the sliding block, the Y-direction elastic plunger enables the sliding block to be tightly attached to the fixing assembly in the Y direction, and the Z-direction elastic plunger enables the sliding block to be tightly attached to the fixing assembly in the Z direction; the X-direction spring tightly abuts against the combination body of the sliding block and the fine adjustment nut and the fixing assembly in the X direction, and in the abutting direction, the fine adjustment screw is also tightly abutted against the fixing assembly. The slider is provided with a load. The ball head plunger and the spring are used for pressing a product, the back clearance of parts is eliminated, the precision requirement is met, and the size is small; the device is simple in structure and low in manufacturing cost; in addition, fine threads meeting the micron-order adjusting precision are used, and self-locking can be achieved.

Description

Technical Field

[0001] This utility model relates to a manual fine-tuning mechanism. More particularly, it relates to a manual fine-tuning mechanism used in processes requiring precise alignment, such as in the welding of Micro LEDs, especially in rework production. Background Technology

[0002] Micro LED products are relatively small, with some as small as tens of micrometers. Currently, some processes in the Micro LED industry require precise alignment of the products.

[0003] For example, in the Micro LED manufacturing process, the pressure pins need to be aligned with the LEDs. The alignment accuracy requirement is micron-level adjustment, and the alignment needs to be stable. The alignment space is limited, and ordinary fine-tuning seats cannot meet the requirements. In addition, traditional fine-tuning seats use guide rails for sliding, which are large in size and have a certain back gap, affecting the alignment accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a manual fine-tuning mechanism with high adjustment accuracy, no backlash, and stable positioning, meeting the alignment adjustment requirements of micron-level products. It can be used for precise alignment adjustment of pressure pins during Micro LED welding. To this end, this invention adopts the following technical solution:

[0005] A manual fine-tuning mechanism includes a fixing component and a slider. The fixing component includes a fixing seat and a cover plate, which are fixedly connected. The slider is slidably engaged between the fixing seat and the cover plate. The manual fine-tuning mechanism further includes a fine-tuning screw and a fine-tuning nut, which are threadedly connected. The fine-tuning nut is configured to slide synchronously with the slider along the X-direction but cannot rotate relative to the slider, where the X-direction is the sliding direction of the slider.

[0006] The manual fine-tuning mechanism is also equipped with a Y-axis elastic plunger, a Z-axis elastic plunger, and an X-axis spring; the Y-axis elastic plunger keeps the slider and the fixing component in Y-axis contact, and the Z-axis elastic plunger keeps the slider and the fixing component in Z-axis contact;

[0007] The X-direction spring presses the combination of the slider and the fine-tuning nut against the fixing assembly in the X direction, and in this pressing direction, the fine-tuning screw is also pressed against the fixing assembly;

[0008] The slider is provided with a mounting point for mounting a load.

[0009] Based on the above technical solutions, the present invention may also adopt the following further technical solutions, or combine these further technical solutions:

[0010] The pitch of the fine-tuning screw is 0.2-0.3 micrometers.

[0011] The cover plate has a positioning boss in the middle, and the slider has a guide groove. The guide groove and the positioning boss slide and guide each other and limit the slider in the Y direction. The cover plate cooperates with the fixed seat on the side of the positioning boss and limits the slider in the Z direction.

[0012] The Y-axis elastic plunger presses the slider against the cover plate in the fixing assembly in the Y direction, and the Z-axis elastic plunger presses the slider against the cover plate in the fixing assembly in the Z direction.

[0013] The positioning boss is provided with a Y-axis elastic plunger; the slider is provided with a Z-axis elastic plunger on both sides of the guide groove.

[0014] The fixing seat is provided with a positioning groove that cooperates with the positioning boss, and the cover plate and the fixing seat are connected by screws at the positioning boss.

[0015] The slider has a first X-direction spring groove on the side of the portion facing the fixed seat on both sides of the guide groove. The fixed seat has a second X-direction spring groove on the side facing the slider, corresponding to the first X-direction spring groove. The X-direction spring is located in the first X-direction spring groove and the second X-direction spring groove and presses against the combination of the slider and the fine-tuning nut and the fixed assembly. The head of the fine-tuning screw is pressed against the fixed assembly. When the fine-tuning screw rotates, it pushes the slider to move in the opposite direction.

[0016] The fine-tuning screw is also threaded with a locking nut.

[0017] By adopting the technical solution of this utility model, the product is pressed by a ball-head plunger and a spring, eliminating back clearance of parts, meeting accuracy requirements and having a small size; the structure of this utility model is simple and the manufacturing cost is low; and by using fine threads that meet micron-level adjustment accuracy, it can also achieve self-locking. Attached Figure Description

[0018] Figure 1 This is an exploded view of the structure of an embodiment of the present utility model.

[0019] Figure 2 , 3 4 and 5 are the left view, bottom view, and front view of an embodiment of this utility model, respectively.

[0020] Figure 5 , 6 7 and 7 are respectively Figure 2 , 3 Sectional views AA, CC, and BB of 4.

[0021] Figure 8This is a rear view of an embodiment of the present utility model. Detailed Implementation

[0022] Referring to the accompanying drawings, this utility model provides a manual fine-tuning mechanism, including a fixing component and a slider 3. The fixing component includes a fixing seat 1 and a cover plate 2. The fixing seat 1 has a threaded hole for mounting the manual fine-tuning mechanism. The fixing seat 1 and the cover plate 2 are fixedly connected, and the slider 3 is slidably engaged between the fixing seat 1 and the cover plate 2. The manual fine-tuning mechanism also includes a fine-tuning screw 4 and a fine-tuning nut 5. The fine-tuning screw 4 and the fine-tuning nut 5 are threadedly connected. The fine-tuning nut 5 is configured to slide synchronously with the slider 3 along the X-direction but cannot rotate relative to the slider 3. The X-direction is the sliding direction of the slider 3. In this embodiment, the slider 3 has a connecting hole, and the fine-tuning nut 5 and the connecting hole are connected by an interference fit.

[0023] The manual fine-tuning mechanism also includes a Y-axis elastic plunger 6, a Z-axis elastic plunger 7, and an X-axis spring 8. The Y-axis elastic plunger 6 tightly presses the slider 3 against the fixing component in the Y direction, ensuring no backlash in the Y direction. The Z-axis elastic plunger 7 tightly presses the slider 3 against the fixing component in the Z direction, ensuring no backlash in the Z direction. The elastic plunger is a mechanism comprising a cylindrical body, a top ball, and a spring. A central hole is provided in the cylindrical body, and a spring and a top ball are placed in the central hole. The opening of the central hole is machined to hold the top ball, but the top ball is supported by the spring and protrudes from the opening.

[0024] The X-direction spring 8 presses the combination of the slider 3 and the fine-tuning nut 5 against the fixing component in the X direction, and in this pressing direction, the fine-tuning screw 4 is also pressed against the fixing component.

[0025] The slider 3 is provided with a mounting part, such as a threaded hole 30, for mounting a load, such as the pressure needle described in the background art.

[0026] The fine-tuning screw not only ensures accuracy but also has a self-locking function. The screw has a thread pitch of 0.2-0.3 micrometers, preferably 0.25 micrometers, and a rotation of one degree corresponds to approximately 0.7 micrometers. When the fine-tuning screw 1 rotates, it pushes the slider 3 in the opposite direction, thus adjusting the position of the slider 3.

[0027] In this embodiment, the structure of the fixing component and the slider 3 is implemented as follows:

[0028] The cover plate 2 is provided with a positioning boss 21 in the middle, and the slider 3 is provided with a guide groove 31. The guide groove 31 and the positioning boss 21 slide and guide each other and limit the slider 3 in the Y direction. The side part 22 of the cover plate 2 cooperates with the fixed seat 1 and limits the slider 3 in the Z direction.

[0029] The Y-axis elastic plunger 6 presses the slider 3 against the cover plate 2 in the fixing assembly in the Y direction, and the Z-axis elastic plunger 7 presses the slider 3 against the cover plate 2 in the fixing assembly in the Z direction. The positioning boss 21 has a Y-axis hole 211 for the Y-axis elastic plunger; the slider 3 has a Z-axis hole 321 on both sides of the guide groove for the Z-axis elastic plunger 7.

[0030] The fixed base 1 is provided with a positioning groove 11 that cooperates with the positioning boss 21. The positioning boss 21 is inserted into the positioning groove 11, and the cover plate 2 and the fixed base 1 are connected by screws 10 at the positioning boss 21.

[0031] The slider 3 has a first X-direction spring groove 33 on the side of the portion 32 on both sides of the guide groove facing the fixed seat 1. The fixed seat 1 has a second X-direction spring groove 12 on the side facing the slider 3, corresponding to the first X-direction spring groove 33. The X-direction spring 8 is located in the first X-direction spring groove 33 and the second X-direction spring groove 12 and presses against the combination of the slider 3 and the fine-tuning nut 5 and the fixed assembly. The head 41 of the fine-tuning screw 4 is pressed against the fixed assembly (such as the cover plate). When the fine-tuning screw 4 rotates, it pushes the slider 3 to move in the opposite direction.

[0032] The fine-tuning screw 4 is also threadedly connected to a locking nut 9.

[0033] The above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the protection scope of the present utility model.

[0034] It should be noted that the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. The terms "installed," "set," "equipped with," "connected," "linked," and "sleeve" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In the description of this utility model, it should be understood that the terms "one end," "the other end," "outer side," "inner side," "horizontal," "end," "length," "outer end," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are also used only for the sake of brevity in description and do not indicate or imply relative importance.

Claims

1. A manual fine-tuning mechanism, comprising a fixing component and a slider, wherein the fixing component includes a fixing seat and a cover plate, the fixing seat and the cover plate being fixedly connected, and the slider being slidably engaged between the fixing seat and the cover plate; characterized in that The manual fine-tuning mechanism also includes a fine-tuning screw and a fine-tuning nut, which are threaded together. The fine-tuning nut is configured to slide synchronously with the slider along the X-direction but cannot rotate relative to the slider. The X-direction is the sliding direction of the slider. The manual fine-tuning mechanism is also equipped with a Y-axis elastic plunger, a Z-axis elastic plunger, and an X-axis spring; the Y-axis elastic plunger keeps the slider and the fixing component in Y-axis contact, and the Z-axis elastic plunger keeps the slider and the fixing component in Z-axis contact; The X-direction spring presses the combination of the slider and the fine-tuning nut against the fixing assembly in the X direction, and in this pressing direction, the fine-tuning screw is also pressed against the fixing assembly; The slider is provided with a mounting point for mounting a load.

2. The manual fine-tuning mechanism as described in claim 1, characterized in that, The pitch of the fine-tuning screw is 0.2-0.3 micrometers.

3. The manual fine-tuning mechanism as described in claim 1, characterized in that, The cover plate has a positioning boss in the middle, and the slider has a guide groove. The guide groove and the positioning boss slide and guide each other and limit the slider in the Y direction. The cover plate cooperates with the fixed seat on the side of the positioning boss and limits the slider in the Z direction.

4. The manual fine-tuning mechanism as described in claim 3, characterized in that, The Y-axis elastic plunger presses the slider against the cover plate in the fixing assembly in the Y direction, and the Z-axis elastic plunger presses the slider against the cover plate in the fixing assembly in the Z direction.

5. A manual fine-tuning mechanism as described in claim 3, characterized in that, The positioning boss is provided with a Y-axis elastic plunger; the slider is provided with a Z-axis elastic plunger on both sides of the guide groove.

6. A manual fine-tuning mechanism as described in claim 3, characterized in that, The fixing seat is provided with a positioning groove that cooperates with the positioning boss, and the cover plate and the fixing seat are connected by screws at the positioning boss.

7. A manual fine-tuning mechanism as described in claim 3, characterized in that, The slider has a first X-direction spring groove on the side of the portion facing the fixed seat on both sides of the guide groove. The fixed seat has a second X-direction spring groove on the side facing the slider, corresponding to the first X-direction spring groove. The X-direction spring is located in the first X-direction spring groove and the second X-direction spring groove and presses against the combination of the slider and the fine-tuning nut and the fixed assembly. The head of the fine-tuning screw is pressed against the fixed assembly. When the fine-tuning screw rotates, it pushes the slider to move in the opposite direction.

8. The manual fine-tuning mechanism as described in claim 1, characterized in that, The fine-tuning screw is also threaded with a locking nut.

Images