Flexible unilateral positioning mechanism

Abstract

The utility model relates to the technical field of positioning measurement, and discloses a flexible unilateral positioning mechanism. The flexible single-side positioning mechanism comprises a base, a positioning jig is erected above the base, a first positioning block is adjustably installed on the upper end face of the positioning jig, and a receding position is formed in the side edge, opposite to the first positioning block, of the positioning jig; the driving cylinder is mounted on the base, the output end of the driving cylinder is connected with an elastic assembly, and a moving frame is mounted at the end, away from the driving cylinder, of the elastic assembly; the upper end of the moving frame extends to the avoiding position, and a second positioning block is mounted at the top end; v-shaped limiting grooves are formed in the two ends, close to each other, of the first positioning block and the second positioning block respectively. According to the flexible single-side positioning mechanism, the problem that a rectangular workpiece is damaged or inaccurate in positioning during positioning is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning measurement technical field, concretely is a kind of flexible unilateral positioning mechanism. BACKGROUND

[0002] With the continuous improvement of industrial processing precision, the measurement of workpieces is particularly important. Through measurement, the size, angle, geometric shape, etc. of the workpiece can be ensured to meet the design requirements, and the stability and reliability of the production process can be ensured. The clamping of the workpiece during measurement is quick and convenient, and the precise positioning directly affects the measurement efficiency and measurement results. Most workpieces are placed on the specified station of the measuring equipment for detection. In order to improve the measurement efficiency and accuracy of the workpiece, a positioning fixture is generally provided on the station to place the workpiece at a specified coordinate through the positioning fixture.

[0003] In the positioning process of the existing positioning fixture for some regular rectangular workpieces, the workpiece cannot be pushed to the position in the X and Y directions at the same time, which may cause the workpiece to be in position in one direction and not in position in the other direction. The pressure in the in-position direction increases, thereby increasing the friction in that direction. When the pushing force in the other direction is less than the frictional force of the side, the workpiece may be stuck and cannot be pushed to the position. If the pushing force of the positioning fixture is greater than the frictional force, the workpiece may be damaged, scratched, and not accurately positioned, ultimately resulting in a decrease in the yield of the workpiece.

[0004] Therefore, there is an urgent need for a flexible unilateral positioning mechanism to solve the above problems. SUMMARY

[0005] Based on the above, the purpose of the utility model is to provide a flexible unilateral positioning mechanism to solve the problem that the positioning fixture in the prior art easily causes the workpiece to be damaged, scratched, and not accurately positioned.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model provides a flexible unilateral positioning mechanism, which comprises:

[0008] A base is provided, and a positioning jig is arranged above the base. A first positioning block is adjustably mounted on the upper end surface of the positioning jig. An empty space is provided on the side opposite to the first positioning block.

[0009] A drive cylinder is arranged on the base. An elastic assembly is connected to the output end of the drive cylinder. A moving frame is mounted on the end of the elastic assembly away from the drive cylinder. The upper end of the moving frame extends to the empty space, and a second positioning block is mounted on the top end of the moving frame. The drive cylinder is used to drive the second positioning block to reciprocate relative to the first positioning block.

[0010] The two ends of the first positioning block and the second positioning block, which are close to each other, are respectively provided with V-shaped limiting grooves.

[0011] As an optional technical scheme of the flexible single-side positioning mechanism, the elastic assembly comprises a guide rod and a spring; one end of the guide rod is provided with a blocking ring and is connected to the telescopic end of the driving cylinder through the blocking ring, and the other end is connected to the moving frame; the spring is sleeved on the guide rod, and the two ends thereof abut against the blocking ring and the moving frame, respectively.

[0012] As an optional technical scheme of the flexible single-side positioning mechanism, the first positioning block and the second positioning block are respectively provided with adjusting holes; the first positioning block is adjustably mounted on the positioning jig through the adjusting hole, and the second positioning block is adjustably mounted on the top end of the moving frame through the adjusting hole, and the first positioning block and the second positioning block are located on the same axis.

[0013] As an optional technical scheme of the flexible single-side positioning mechanism, the bottom of the positioning jig is provided with a sliding rail, and a matching sliding block is slidably arranged on the sliding rail; the moving frame is connected to the sliding block.

[0014] As an optional technical scheme of the flexible single-side positioning mechanism, the positioning jig is provided with a hollow cavity, and a hollow support is connected in the hollow cavity.

[0015] As an optional technical scheme of the flexible single-side positioning mechanism, the bottom of the base is provided with a mounting seat, and the base and the mounting seat are hollow structures.

[0016] As an optional technical scheme of the flexible single-side positioning mechanism, the two sides of the base are respectively provided with longitudinal support plates, and the positioning jig is horizontally mounted on the top of the two longitudinal support plates.

[0017] The flexible single-side positioning mechanism has the advantages that:

[0018] The flexible single-side positioning mechanism comprises a base, a positioning jig arranged above the base, a first positioning block adjustably mounted on the upper end surface of the positioning jig, a hollow position arranged on the side of the positioning jig opposite to the first positioning block, a driving cylinder arranged on the base, an elastic assembly connected to the output end of the driving cylinder, a moving frame mounted on the end of the elastic assembly away from the driving cylinder, a second positioning block mounted on the top end of the moving frame extending to the hollow position, and V-shaped limiting grooves arranged on the two ends of the first positioning block and the second positioning block close to each other.

[0019] In the above structure, a rectangular workpiece is placed on the positioning fixture manually or by an external robotic arm, with two opposite corners of the rectangular workpiece facing the "V"-shaped limiting grooves on the first and second positioning blocks, respectively. A drive cylinder drives a moving frame to move the second positioning block, moving the rectangular workpiece from the positioning fixture towards the first positioning block and pushing two opposite corners of the rectangular workpiece into the two "V"-shaped limiting grooves, thus achieving precise positioning of the rectangular workpiece. When the rectangular workpiece becomes stuck or obstructed during positioning, the spring in the elastic component is compressed, preventing the second positioning block from continuing to push the rectangular workpiece. Therefore, this flexible single-sided positioning mechanism avoids the problem of damage or inaccurate positioning of the rectangular workpiece during positioning. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the flexible single-sided positioning mechanism in this embodiment of the present invention;

[0021] Figure 2 This is an exploded view of the flexible one-sided positioning mechanism in an embodiment of this utility model;

[0022] Figure 3 This is an exploded view of the drive cylinder, elastic component, and moving frame in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the positioning fixture in an embodiment of the present invention.

[0024] In the picture:

[0025] 1. Positioning fixture; 10. First positioning block; 11. Second positioning block; 12. "V" shaped limiting groove; 13. Adjustment hole; 14. Clearance space; 15. Clearance cavity; 16. Hollowed-out bracket; 17. Rectangular workpiece;

[0026] 2. Drive cylinder; 20. Elastic component; 201. Guide rod; 202. Retaining ring; 21. Spring; 22. Moving frame; 23. Slide rail; 24. Slider;

[0027] 3. Base; 31. Longitudinal support plate;

[0028] 4. Mounting bracket. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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.

[0033] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0034] like Figures 1-4 As shown, this utility model provides a flexible unilateral positioning mechanism, which includes a base 3, a positioning fixture 1 mounted on the top of the base 3, a first positioning block 10 adjustablely mounted on the upper end of the positioning fixture 1, and a clearance 14 located on the side opposite to the first positioning block 10 of the positioning fixture 1; a drive cylinder 2 mounted on the base 3, the output end of the drive cylinder 2 connected to an elastic component 20, and a movable frame 22 mounted on the end of the elastic component 20 away from the drive cylinder 2; the upper end of the movable frame 22 extends to the clearance 14, and a second positioning block 11 is mounted on its top end; the drive cylinder 2 is used to drive the second positioning block 11 to reciprocate relative to the first positioning block 10; wherein, the two ends of the first positioning block 10 and the second positioning block 11 that are close to each other are respectively provided with "V" shaped limiting grooves 12.

[0035] This utility model provides a flexible single-sided positioning mechanism. A rectangular workpiece 17 is placed on a positioning fixture 1 manually or with an external robotic arm, with two opposite corners of the rectangular workpiece 17 facing the "V"-shaped limiting grooves 12 on the first positioning block 10 and the second positioning block 11, respectively. A drive cylinder 2 drives a moving frame 22 to move the second positioning block 11 towards the first positioning block 10, pushing two opposite corners of the rectangular workpiece 17 into the two "V"-shaped limiting grooves 12, thus achieving precise positioning of the rectangular workpiece 17. When the rectangular workpiece 17 becomes stuck or obstructed during positioning, the spring 21 in the elastic component 20 is compressed, preventing the second positioning block 11 from continuing to push the rectangular workpiece 17. Therefore, this flexible single-sided positioning mechanism avoids damage or inaccurate positioning of the rectangular workpiece 17 during positioning.

[0036] It should be noted that the "V" shaped limiting grooves 12 on the first and second limiting blocks in this embodiment can be set to different shapes, such as rectangles, "U" shapes, arc shapes, etc. The limiting grooves of different shapes can be used to match workpieces of different specifications and shapes for positioning, thereby improving the applicability of the flexible single-sided positioning mechanism.

[0037] Furthermore, such as Figure 2 As shown, a mounting base 4 is connected to the bottom of the base 3, allowing the flexible single-sided positioning mechanism to be stably installed on a designated workstation or production line via the mounting base 4. A longitudinal support plate 31 is installed on each of the left and right sides of the base 3, through which the positioning fixture 1 is horizontally mounted above the base 3. Specifically, a cavity 15 (such as...) is provided on the positioning fixture 1. Figure 4 As shown, the cavity 15 is located between the first positioning block 10 and the second positioning block 11, and a hollow support 16 is connected inside the cavity 15. The rectangular workpiece 17 is positioned by manual or external robotic arm on the hollow support 16. On the other hand, the base 3 and the mounting base 4 are both hollow structures. Therefore, when this flexible single-sided positioning mechanism is used in measuring equipment to position and measure the workpiece, the hollow structure of the cavity 15 and the base 3 and the mounting base 4 allows both the upper and lower surfaces of the workpiece to be detected by the measuring equipment, which improves the measurement efficiency and accuracy of the workpiece.

[0038] In this embodiment, as Figure 3As shown, the elastic component 20 includes, but is not limited to, an elastic airbag or a spring 21 assembly. In this embodiment, the elastic component 20 is preferably a guide rod 201 and a spring 21 sleeved on the guide rod 201. One end of the guide rod 201 is provided with a retaining ring 202, and one end of the moving frame 22 is provided with a guide hole. The retaining ring 202 is connected to the telescopic end of the drive cylinder 2, and the other end of the guide rod 201 away from the retaining ring 202 slides in the guide hole. The two ends of the spring 21 abut against the retaining ring 202 and the moving frame 22, respectively. When the drive cylinder 2 drives the second positioning block 11 to position the workpiece on the positioning fixture 1, if the workpiece is stuck or obstructed, the spring 21 will be compressed. The end of the guide rod 201 away from the retaining ring 202 passes through the guide hole and extends. That is to say, this structure provides a buffer stroke between the second positioning block 11 and the workpiece, preventing the drive cylinder 2 from exerting too much force on the second positioning block 11 and causing damage to the workpiece.

[0039] Furthermore, the bottom of the positioning fixture 1 is provided with a slide rail 23, and a matching slider 24 is slidably mounted on the slide rail 23. The moving frame 22 is connected to the slider 24. The arrangement of the slide rail 23 and the slider 24 makes the moving frame 22 drive the second positioning block 11 to reciprocate relative to the first positioning block 10 more stably and linearly, thereby improving the positioning accuracy and stability of the flexible single-sided positioning mechanism for the workpiece.

[0040] It should be noted that the first positioning block 10 and the second positioning block 11 are respectively provided with adjustment holes 13; the first positioning block 10 is adjustablely mounted on the positioning fixture 1 through the adjustment holes 13, and the second positioning block 11 is adjustablely mounted on the top of the moving frame 22 through the adjustment holes 13. The first positioning block 10 and the second positioning block 11 are located on the same axis. The structure in which the distance between the first positioning block 10 and the second positioning block 11 can be adjusted relative to each other can be used to position workpieces of more specifications and sizes, thereby improving the applicability of the flexible single-sided positioning mechanism.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A flexible single-sided positioning mechanism, characterized by, The utility model relates to a positioning device for the production of the semiconductor wafer, including: The upper end face of the positioning jig of the base is adjustably installed with the first positioning block, and the positioning jig is provided with an empty space on the side position opposite to the first positioning block; The output end of the driving air cylinder connected with the elastic assembly is installed with the moving frame at the end away from the driving air cylinder; the upper end of the moving frame extends to the empty space, and the top end of the moving frame is installed with the second positioning block; the driving air cylinder is used for driving the second positioning block to reciprocate relative to the first positioning block; Wherein, the two ends of the first positioning block and the second positioning block close to each other are respectively provided with "V" shape limit slot.

2. A flexible single-sided positioning mechanism according to claim 1, wherein, The elastic assembly includes a guide rod and a spring; one end of the guide rod is provided with a stop ring and is connected to the telescopic end of the driving air cylinder through the stop ring, and the other end is connected to the moving frame; the spring is sleeved on the guide rod, and the two ends are respectively abutted on the stop ring and the moving frame.

3. A flexible single-sided positioning mechanism according to claim 2, wherein, The first positioning block and the second positioning block are respectively provided with adjusting holes; the first positioning block is adjustably installed on the positioning jig through the adjusting hole, and the second positioning block is adjustably installed on the top end of the moving frame through the adjusting hole, and the first positioning block and the second positioning block are located on the same axis.

4. A flexible single-sided positioning mechanism according to claim 3, wherein, The bottom of the positioning jig is provided with a slide rail, and a matching sliding block is slid on the slide rail, and the moving frame is connected to the sliding block.

5. The flexible single-sided positioning mechanism of claim 1, wherein, The positioning jig is provided with an empty cavity, and the empty cavity is connected with a hollow support.

6. A flexible single-sided positioning mechanism according to claim 5, wherein, The bottom of the base is provided with a mounting seat, and the base and the mounting seat are hollow structures.

7. A flexible single-sided positioning mechanism according to claim 6, wherein, The two sides of the base are respectively provided with longitudinal support plates, and the positioning jig is horizontally installed on the top of the two longitudinal support plates.

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