A fixture for touch screen processing

Abstract

The present invention discloses a fixture for processing a touch screen, comprising a support plate and a suction cup provided on the support plate for fixing the touch screen, and further comprising a first direction adjustment component, a second direction adjustment component and a controller; the first direction adjustment component comprises a first driving mechanism and a first pushing member connected to the first driving mechanism, the first pushing member having a first pushing surface, and a first pressure sensor and a second pressure sensor being provided on the first pushing surface; the second direction adjustment component comprises a second driving mechanism and a second pushing member connected to the second driving mechanism, the second pushing member having a second pushing surface, and a third pressure sensor and a fourth pressure sensor being provided on the second pushing surface. The fixture for processing a touch screen provided in the present application is designed with a set of accurate and convenient positioning and guiding mechanisms, which can achieve accurate positioning of the touch screen on the fixture, improve production efficiency and product quality, and has a wide range of applications.

Description

Technical Field

[0001] The present invention relates to the technical field of touch screen processing, and in particular to a fixture for touch screen processing. Background Art

[0002] In the field of touch screen manufacturing, testing, and application, touch screen fixation is a fundamental and critical link. With the development of technology, touch screens are widely used in many fields such as smartphones and industrial control equipment. Their stable performance requires precise fixation during manufacturing. For example, the touch screen and components on the smartphone production line are precisely assembled. Fixation deviations can cause display anomalies and other problems, affecting the yield rate and user experience. During testing, stable and precise fixation of the touch screen can ensure that the test data of performance indicators such as touch accuracy is accurate and reliable. Otherwise, detection errors will cause unqualified products to enter the market, damaging consumer rights and the company's reputation and competitiveness. Therefore, in the current touch screen manufacturing, testing, and related application fields, the fixation operation of the touch screen is a fundamental and critical link.

[0003] A universal fixture for touch screen processing is disclosed in the Chinese patent application number 202411744760.3, which exposes obvious defects in the touch screen fixing process. When the touch screen is installed in the fixture, it is difficult to control the position of the touch screen. In actual operation, it is often difficult to accurately correspond the length direction of the touch screen to the length direction of the fixture. The main reason for this problem is that the existing technology lacks a set of accurate and convenient positioning guidance mechanisms. On the one hand, in the process of docking the touch screen and the fixture, there are no clear and intuitive positioning marks or auxiliary positioning structures, so that the operator can only rely on experience to roughly adjust the position, and it is difficult to ensure the accuracy of each operation. On the other hand, the design of the fixture itself may not fully consider the different specifications and sizes of the touch screen and its adaptability under various working conditions, which makes it difficult to achieve universal and reliable positioning when facing different types of touch screens.

[0004] In summary, a new technical solution is urgently needed to solve the problem in the existing technology that the position of the touch screen is difficult to control and difficult to effectively fix when it is fixed, so as to improve the operational stability and reliability of the touch screen in various related links. Summary of the Invention

[0005] The invention discloses a fixture for processing a touch screen, which aims to solve the technical problems in the prior art that the position of the touch screen is difficult to control and effectively fix when the touch screen is fixed.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present application provides a touch screen processing fixture for fixing a touch screen having a first side surface and a second side surface that are perpendicular to each other, comprising a support plate and a suction cup disposed on the support plate for fixing the touch screen, a first direction adjustment component, a second direction adjustment component, and a controller; wherein the suction cup is rotatably connected to the support plate;

[0008] The first direction adjustment assembly includes a first driving mechanism and a first pushing member connected to the first driving mechanism, the first pushing member having a first pushing surface that pushes the first side surface of the touch screen, and a first pressure sensor and a second pressure sensor are provided on the first pushing surface;

[0009] The second direction adjustment assembly includes a second driving mechanism and a second pushing member connected to the second driving mechanism, the second pushing member has a second pushing surface that pushes the second side surface of the touch screen, and a third pressure sensor and a fourth pressure sensor are provided on the second pushing surface;

[0010] The pushing directions of the first pushing member and the second pushing member are perpendicular to each other, and the heights of the first pushing member and the second pushing member both match the installation height of the touch screen when it is adsorbed on the suction cup;

[0011] The first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor are electrically connected to the controller respectively.

[0012] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0013] The touch screen processing fixture provided in this application is designed with a set of accurate and convenient positioning and guiding mechanisms, which can achieve precise positioning of the touch screen on the fixture, improve production efficiency and product quality, and has a wide range of applications. Specifically, it has the following advantages:

[0014] (1) It can realize accurate positioning of the touch screen. When in use, the first direction adjustment component (or the second direction adjustment component) is first used to adjust the direction of the first side (or the second side) of the touch screen, that is, first select one side to position the touch screen in one direction, and then use the second direction adjustment component (or the first direction adjustment component) to position the entire touch screen.

[0015] If the first direction adjustment component is first used to adjust the direction of the first side of the touch screen, the first driving mechanism is used to drive the first pushing member to extend, and the first side of the touch screen is pushed by the first pushing surface. The first pressure sensor and the second pressure sensor on the first pushing surface are used to detect the pushing force of the first pushing surface on the first side of the touch screen; when the difference between the detection values ​​of the first pressure sensor and the second pressure sensor is less than the threshold value A, it indicates that the touch screen is adjusted to the correct position in the first direction, and the controller controls the first driving mechanism to stop pushing, and the extended length of the first pushing member can be obtained; at this time, the touch screen is positioned by the second direction adjustment component, and the second driving mechanism drives the second pushing member to extend, and the second side of the touch screen is pushed by the second pushing surface. The third pressure sensor and the fourth pressure sensor on the second pushing surface are used to detect the pushing force of the second pushing surface on the second side of the touch screen; when the difference between the detection values ​​of the third pressure sensor and the fourth pressure sensor is less than the threshold value B, the controller controls the second driving mechanism to stop pushing, and the extended length of the second pushing member can be obtained.

[0016] If the second direction adjustment component is first used to adjust the direction of the second side of the touch screen, the second driving mechanism is used to drive the second pushing member to extend, and push the second side of the touch screen through the first pushing surface. The third pressure sensor and the fourth pressure sensor on the second pushing surface are used to detect the pushing force of the second pushing surface on the second side of the touch screen; when the difference between the detection values ​​of the third pressure sensor and the fourth pressure sensor is less than the threshold value B, it indicates that the touch screen is adjusted to the correct position in the second direction, and the controller controls the second driving mechanism to stop pushing, and the extended length of the second pushing member can be obtained; at this time, the touch screen is positioned again through the first direction adjustment component, and the first driving mechanism drives the first pushing member to extend, and push the first side of the touch screen through the first pushing surface. The first pressure sensor and the second pressure sensor on the first pushing surface are used to detect the pushing force of the first pushing surface on the first side of the touch screen; when the difference between the detection values ​​of the first pressure sensor and the second pressure sensor is less than the threshold value A, the controller controls the first driving mechanism to stop pushing, and the extended length of the first pushing member can be obtained.

[0017] Through the above method, combined with the final extension length of the first push member and the second push member and the calculated assembly position coordinates of the touch screen, the position of the touch screen on the fixture can be accurately obtained, the long side and center point of the touch screen can be determined, and high-precision positioning can be achieved to meet the strict requirements of touch screen processing on position accuracy.

[0018] (2) It improves the convenience and efficiency of operation. When in use, only one of the first and second directions needs to be adjusted, which simplifies the operation process. The operator does not need to repeatedly adjust in two directions, which reduces the adjustment time and operation complexity and improves work efficiency. In actual production, the touch screen can be quickly fixed in the appropriate position, speeding up the production pace. During processing, the first pusher and the second pusher can be retracted, which is extremely convenient in the loading and unloading process. When loading, the retracted pusher will not hinder the placement of the touch screen, making it easier for the operator to quickly place the touch screen on the suction cup; when unloading, the retraction of the pusher also makes it smoother to remove the touch screen, reducing auxiliary time and further improving production efficiency.

[0019] (3) The versatility and adaptability of the equipment are enhanced. The fixture can adapt to touch screens of different shapes and sizes, which enhances the versatility of the equipment.

[0020] (4) The level of automation and intelligence has been improved. The controller automatically controls the action of the drive mechanism according to the detection value of the pressure sensor and calculates the assembly position coordinates, realizing the automation and intelligent control of the fixture. This reduces manual intervention, reduces errors caused by human factors, and improves the stability of the production process and the consistency of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of an embodiment of the present application;

[0022] Figure 2 yes Figure 1 A top view of

[0023] Figure 3 yes Figure 2 A magnified schematic diagram of part A in the middle;

[0024] Figure 4 yes Figure 2 A magnified schematic diagram of part B in the middle;

[0025] Figure 5 is a schematic structural diagram of an embodiment of the present application (the first direction adjustment component and the second direction adjustment component are not shown);

[0026] Figure 6 yes Figure 5 A top view of

[0027] Figure 7 yes Figure 6 Cross-sectional view of CC;

[0028] Figure 8 yes Figure 7 Enlarged schematic diagram of the middle D part;

[0029] Figure 9(a) is a schematic diagram of the working process of the embodiment of the present application Figure 1 ;

[0030] Figure 9 (b) is a schematic diagram of the working process of the embodiment of the present application Figure 2 ;

[0031] Figure 10 (a) is a schematic diagram of the working process of the embodiment of the present application Figure 3 ;

[0032] Figure 10 (b) is a schematic diagram of the working process of the embodiment of the present application Figure 4 ;

[0033] Figure 11 This is a schematic diagram of the state in which the embodiment of the present application is installed on an operating table;

[0034] Figure 12 This is a structural diagram of a first direction adjustment component in another embodiment of the present application;

[0035] Figure 13 yes Figure 12 A top view of

[0036] Figure 14 This is a structural diagram of a second direction adjustment component in another embodiment of the present application;

[0037] Figure 15 yes Figure 14 A top view of

[0038] Figure 16 is a top view of a first direction adjustment component in another embodiment of the present application;

[0039] Figure 17 is a top view of a second direction adjustment assembly in another embodiment of the present application;

[0040] Figure 18 (a) is a schematic diagram of the working process of another embodiment of the present application Figure 1 ;

[0041] Figure 18 (b) is a schematic diagram of the working process of another embodiment of the present application Figure 2 ;

[0042] Figure 19 (a) is a schematic diagram of the working process of another embodiment of the present application Figure 3 ;

[0043] Figure 19 (b) is a schematic diagram of the working process of another embodiment of the present application Figure 4 ;

[0044] Figure 20 (a) is a schematic diagram of the working process of another embodiment of the present application Figure 5 ;

[0045] Figure 20 (b) is a schematic diagram of the working process of another embodiment of the present application Figure 6 .

[0046] In the figure: 10, touch screen; 101, first side; 102, second side; 20, support plate; 201, mounting hole; 30, suction cup; 301, plate body; 3011, exhaust hole; 3012, suction cavity; 302, exhaust pipe; 3021, quick-release connector; 3022, fixing pipe; 3023, rotating pipe; 40, first direction adjustment assembly; 401, first driving mechanism; 402, first push rod; 403, first push plate; 404, first flexible plate; 4041, first intermediate plate; 4042, first wing plate; 50, second direction adjustment assembly; 501, second driving mechanism; 502, second push rod; 503, second push plate; 504, second flexible plate; 5041. Second intermediate plate; 5042. Second wing plate; 60. First pressure sensor; 70. Second pressure sensor; 80. Third pressure sensor; 90. Fourth pressure sensor; 100. Connecting plate; 110. Electromagnet; 120. Connecting tube; 130. Synchronous rotating member; 140. Permanent magnet; 150. Elastic member; 160. Optical signal generating unit; 170. Optical signal receiving unit; 180. Grating; 190. Guide column; 200. Fifth pressure sensor; 210. Sixth pressure sensor; 220. Sleeve; 230. Mounting shell; 240. First pushing surface; 250. Second pushing surface; 260. Operating table; 270. Rotating connecting member. DETAILED DESCRIPTION

[0047] In the following embodiments, the description of the method of use is based on first using the first direction adjustment component 40 to adjust the direction of the first side surface 101 of the touch screen 10, and then using the second direction adjustment component 50 to position the touch screen 10. Of course, the second direction adjustment component 50 can also be used to first adjust the direction of the second side surface 102 of the touch screen 10, and then use the first direction adjustment component 40 to position the touch screen 10.

[0048] See also Figures 1-8 ,in, Figure 5Schematic diagram of the structure without the first direction adjustment assembly 40 and the second direction adjustment assembly 50. The present application provides a touch screen processing fixture for fixing a touch screen 10 having a first side surface 101 and a second side surface 102 perpendicular to each other, comprising a support plate 20 and a suction cup 30 provided on the support plate 20 for fixing the touch screen 10, and further comprising a first direction adjustment assembly 40, a second direction adjustment assembly 50, and a controller;

[0049] The suction cup 30 is rotatably connected to the support plate 20; the first direction adjustment component 40 includes a first driving mechanism 401 and a first pushing member connected to the first driving mechanism 401, the first pushing member has a first pushing surface 240 that pushes the first side surface 101 of the touch screen 10, and the first pushing surface 240 is provided with a first pressure sensor 60 and a second pressure sensor 70, the first pressure sensor 60 and the second pressure sensor 70 are used to detect the pushing force between the first pushing surface 240 and the first side surface 101 of the touch screen 10; the second direction adjustment component 50 includes a second driving mechanism 501 and a second pushing member connected to the second driving mechanism 501, the second pushing member The movable member has a second pushing surface 250 for pushing the second side surface 102 of the touch screen 10, and a third pressure sensor 80 and a fourth pressure sensor 90 are provided on the second pushing surface 250. The third pressure sensor 80 and the fourth pressure sensor 90 are used to detect the pushing force between the second pushing surface 250 and the second side surface 102 of the touch screen 10; the first pressure sensor 60, the second pressure sensor 70, the third pressure sensor 80 and the fourth pressure sensor 90 are electrically connected to the controller respectively; the pushing directions of the first pushing member and the second pushing member are perpendicular to each other, and the heights of the first pushing member and the second pushing member both match the installation height when the touch screen 10 is adsorbed on the suction cup 30. The controller can be configured to: a) control the first drive mechanism 401 to stop advancing when the difference between the detection values ​​of the first pressure sensor 60 and the second pressure sensor 70 is less than a threshold value A, satisfying the following: 1N≤A≤10N; b) control the second drive mechanism 501 to stop advancing when the difference between the detection values ​​of the third pressure sensor 80 and the fourth pressure sensor 90 is less than a threshold value B, satisfying the following: 1N≤B≤10N; and c) calculate the assembly position coordinates of the touch screen 10 based on the final extension length of the first pusher and the final extension length of the second pusher. It will be understood that thresholds A and B are used to quantify the allowable force deviation between the two sides, and their values ​​need to be set based on the size, material, and test requirements of the touch screen 10 (e.g., 1-5N for small-sized screens and 5-10N for large-sized screens), to ensure that the deviation is within a range that does not affect the test results or assembly accuracy.

[0050] In some embodiments, the first pushing member includes a first push rod 402 and a first push plate 403, one end of the first push rod 402 is connected to the first driving mechanism 401, and the other end of the first push rod 402 is connected to the first push plate 403, the plane where the first push plate 403 is located is parallel to the first side surface 101 of the touch screen 10, and the first push plate 403 is provided with a first flexible plate 404 having a first pushing surface 240.

[0051] In some embodiments, the second push member includes a second push rod 502 and a second push plate 503. One end of the second push rod 502 is connected to the second drive mechanism 501, and the other end of the second push rod 502 is connected to the second push plate 503. The plane on which the second push plate 503 is located is parallel to the second side surface 102 of the touch screen 10. The second push plate 503 is provided with a second flexible plate 504 having a second push surface 250. It is understood that the first flexible plate 404 and the second flexible plate 504 are both made of flexible materials, which are inherently elastic and can elastically deform when subjected to force. They disperse stress by expanding the contact area, absorb impact energy by utilizing the viscoelastic damping effect, prolong deformation time and reduce impact force, thus avoiding damage to the touch screen 10 caused by stress concentration and rigid collision. The low friction and no particle shedding characteristics can protect the coating layer, reduce the fluctuation of the reaction force on the drive mechanism, and extend the service life of the device.

[0052] In some embodiments, the clamp further includes a fifth pressure sensor 200; both sides of the first flexible plate 404 are tilted toward the suction cup 30; the first pressure sensor 60 and the second pressure sensor 70 are symmetrically positioned at the edges of the first flexible plate 404; the fifth pressure sensor 200 is positioned on the first pushing surface 240 and located in the center of the first flexible plate 404, and is electrically connected to a controller. The controller is configured to control the first drive mechanism 401 to stop advancing when the difference between the detection values ​​of the first pressure sensor 60 and the second pressure sensor 70 is less than a threshold value A, and the detection value of the fifth pressure sensor 200 is greater than zero. It is understood that the first pressure sensor 60 and the second pressure sensor 70 are positioned at the edges of the first flexible plate 404, respectively, and the fifth pressure sensor 200 is positioned in the center of the first flexible plate 404. First, the first flexible plate 404 is made of a flexible material and is inherently elastic, which can protect the touch screen 10. Second, the controller reads the signals of the first pressure sensor 60, the second pressure sensor 70, and the fifth pressure sensor 200 at the same time, avoiding abnormal shutdowns caused by misjudgment of a single sensor, improving the reliability of the fixture, and improving the accuracy of the positioning of the touch screen 10. Third, by adjusting the threshold A and the preset thrust value detected by the fifth pressure sensor 200, the same fixture can be adapted to touch screen 10 products of different sizes or strengths. The production model can be switched by simply modifying the controller parameters, reducing the customization cost of the fixture and improving the flexibility of the production line. Fourth, it is also possible to eliminate products with abnormal force or adjust process parameters in advance through feedback from the first pressure sensor 60, the second pressure sensor 70, and the fifth pressure sensor 200, to avoid rework in subsequent processes due to poor positioning in the early stage, reducing production costs and improving yield.

[0053] In some embodiments, the first flexible plate 404 includes a first middle plate 4041 and two first wing plates 4042 symmetrically connected on both sides of the first middle plate 4041, and the outer edges of the two first wing plates 4042 are inclined toward the suction cup 30; the first pressure sensor 60 and the second pressure sensor 70 are respectively located on the two first wing plates 4042, and the fifth pressure sensor 200 is located on the first middle plate 4041.

[0054] See also Figure 12 、 Figure 13 In some embodiments, the first wing plate 4042 is a rectangular plate.

[0055] See also Figure 16 In some embodiments, the first wing plate 4042 is a curved plate.

[0056] In some embodiments, the clamp further includes a sixth pressure sensor 210; both sides of the second flexible plate 504 are inclined toward the suction cup 30; the third pressure sensor 80 and the fourth pressure sensor 90 are symmetrically arranged at the edge areas on both sides of the second flexible plate 504; the sixth pressure sensor 210 is arranged on the second pushing surface 250 and located in the middle of the second flexible plate 504, and the sixth pressure sensor 210 is electrically connected to the controller. The controller is configured to control the second driving mechanism 501 to stop advancing when the difference between the detection values ​​of the third pressure sensor 80 and the fourth pressure sensor 90 is less than a threshold value B and the detection value of the sixth pressure sensor 210 is greater than zero. The second flexible plate 504 performs a similar function to the first flexible plate 404 and will not be described in detail here.

[0057] In some embodiments, the second flexible plate 504 includes a second intermediate plate 5041 and two second wing plates 5042 symmetrically connected on both sides of the second intermediate plate 5041, and the outer edges of the two second wing plates 5042 are inclined toward the suction cup 30; the third pressure sensor 80 and the fourth pressure sensor 90 are respectively located on the two second wing plates 5042, and the sixth pressure sensor 210 is located on the second intermediate plate 5041.

[0058] See also Figure 14 、 Figure 15 In some embodiments, the second wing plate 5042 is a rectangular plate.

[0059] See also Figure 17 In some embodiments, the second wing plate 5042 is a curved plate.

[0060] In some embodiments, the first pressure sensor 60 and the second pressure sensor 70 are located at the same installation height, and the detection center points of the first pressure sensor 60 and the second pressure sensor 70 are aligned with the two side edges of the first side 101 of the touch screen 10. It is understood that the first pressure sensor 60 and the second pressure sensor 70 are used to adjust the position of the first side 101 of the touch screen 10, and the edges of the first side 101 and the second side 102 of the touch screen 10 are key reference points for positioning. By aligning the detection center points of the first pressure sensor 60 and the second pressure sensor 70 with the two side edges at the same height of the first side 101, the pressure distribution at the edges of the first side 101 at the same height can be directly detected. When the touch screen 10 is offset, the pressure on the edges on both sides will be different. The controller determines the offset direction by the difference. The first driving mechanism 401 drives the first pusher to adjust and continue to push the touch screen 10 forward. As the first pusher continues to push, the touch screen 10 will rotate with the suction cup 30 until the difference between the detection values ​​of the first pressure sensor 60 and the second pressure sensor 70 is less than the threshold value A. The first driving mechanism 401 is controlled to stop pushing. The present application can quickly identify the horizontal translation offset of the touch screen 10 by comparing the edge pressure, solving the problem of edge alignment difficulties caused by empirical adjustment alone in the prior art. If the touch screen 10 is tilted at an angle, the pressure on the edges on both sides will be significantly different. The controller can determine by the difference and drive the first pusher to fine-tune, and cooperate with the rotation function of the suction cup 30 to achieve calibration.

[0061] In some embodiments, the third pressure sensor 80 and the fourth pressure sensor 90 are located at the same installation height, and the detection center point of the third pressure sensor 80 and the detection center point of the fourth pressure sensor 90 are respectively aligned with the two side edges of the second side 102 of the touch screen 10.

[0062] In some embodiments, the midpoint of the line connecting the first pressure sensor 60 and the second pressure sensor 70 coincides with the geometric center of the first side surface 101 of the touch screen 10 .

[0063] In some embodiments, the midpoint of the line connecting the third pressure sensor 80 and the fourth pressure sensor 90 coincides with the geometric center of the second side surface 102 of the touch screen 10 .

[0064] In some embodiments, on the first side 101 of the touch screen 10, the length of the line connecting the position where the center point of the first pressure sensor 60 is aligned and the position where the center point of the second pressure sensor 70 is aligned is 80%-95% of the length of the first side 101 of the touch screen 10; on the second side 102 of the touch screen 10, the length of the line connecting the position where the center point of the third pressure sensor 80 is aligned and the position where the center point of the fourth pressure sensor 90 is aligned is 80%-95% of the length of the second side 102 of the touch screen 10. It is understood that the central 80%-95% area of ​​the first side 101 of the touch screen 10 and the central 80%-95% area of ​​the second side 102 of the touch screen 10 are the primary force-bearing areas, and the extreme edges may have positioning blind spots due to the chamfered corners or arc design of the screen.

[0065] In some embodiments, the material of the first flexible plate 404 and the second flexible plate 504 are selected from any one of silicone, polyurethane and nitrile rubber.

[0066] In some embodiments, the fifth pressure sensor 200 is installed at the same height as the first pressure sensor 60 and the second pressure sensor 70, and the detection center point of the fifth pressure sensor 200 is aligned with the geometric center of the first side 101 of the touch screen 10; the sixth pressure sensor 210 is installed at the same height as the third pressure sensor 80 and the fourth pressure sensor 90; the detection center point of the sixth pressure sensor 210 is aligned with the geometric center of the second side 102 of the touch screen 10.

[0067] In some embodiments, the clamp also includes a speed limiting mechanism for limiting the rotational speed of the suction cup 30, and the speed limiting mechanism is electrically connected to the controller; the controller is configured to: when the detection value of the first pressure sensor 60 or the second pressure sensor 70 is greater than zero, control the speed limiting mechanism to decelerate the suction cup 30 for the first time; when the detection values ​​of the first pressure sensor 60 and the second pressure sensor 70 are both greater than zero, control the speed limiting mechanism to decelerate the suction cup 30 for the second time; when the difference between the detection values ​​of the first pressure sensor 60 and the second pressure sensor 70 is less than the threshold value A, and the detection value of the fifth pressure sensor 200 is greater than zero, control the first driving mechanism 401 to stop advancing, and at the same time control the speed limiting mechanism to lock the suction cup 30 (if only the first pressure sensor 60 and the second pressure sensor 70 are set on the first pushing surface 240, when the detection value difference is less than the threshold value A, control the first driving mechanism 401 to stop advancing, and at the same time control the speed limiting mechanism to lock the suction cup 30). It is understood that when the detection value of the first pressure sensor 60 or the second pressure sensor 70 is greater than 0, it indicates that the edge of the touch screen 10 has begun to contact the clamp. At this time, if the suction cup 30 rotates too fast, the instantaneous friction may cause stress concentration at the edge. Triggering the first deceleration can reduce the risk of edge scratches or breakage. When the detection values ​​of both the first pressure sensor 60 and the second pressure sensor 70 are greater than 0, it indicates that both edges of the touch screen 10 have fully contacted the first flexible plate 404. At this time, if the rotation speed is too high, the entire screen may slip or twist due to uneven friction. Triggering the second deceleration can prevent internal wiring from breaking due to pulling. When the detection value of the fifth pressure sensor 200 is greater than 0, and the difference between the detection values ​​of the first pressure sensor 60 and the second pressure sensor 70 is less than threshold A, it indicates that the touch screen 10 has reached the preset position in the first direction. At this time, stopping the advancement of the first direction adjustment assembly 40 can ensure assembly accuracy and prevent screen warping due to excessive squeezing. Locking the suction cup 30 through the speed limiting mechanism can increase the reliability of suction.

[0068] In some embodiments, the suction cup 30 includes:

[0069] The disc body 301 has a plurality of air extraction holes 3011 on its top surface, and an air suction cavity 3012 communicating with the air extraction holes 3011 is formed inside the disc body 301;

[0070] The exhaust pipe 302 includes a quick-release connector 3021 for connecting to an external exhaust device, a rotating tube 3023, and a fixed tube 3022. The rotating tube 3023 and the fixed tube 3022 are connected by a rotating connector 270. The other end of the rotating tube 3023 is connected to the disk 301 (when the disk 301 rotates, the rotating tube 3023 rotates with the disk 301), and the rotating tube 3023 is in communication with the suction chamber 3012 inside the disk 301. The quick-release connector 3021 is connected to the other end of the fixed tube 3022.

[0071] The connecting plate 100 is fixed below the supporting plate 20 , and the rotating connecting member 270 is connected to the connecting plate 100 .

[0072] In some embodiments, the rotary connection 270 is a coupling or a rotary joint.

[0073] In some embodiments, the speed limiting mechanism includes: an electromagnet 110, fixedly connected to the bottom surface of the support plate 20, and the electromagnet 110 is electrically connected to the controller; a connecting tube body 120, one end of which is fixedly connected to the bottom of the disk body 301, and is sleeved on the outside of the exhaust pipe 302, and extends in a direction away from the disk body 301; a synchronous rotating member 130, which is sleeved on the connecting tube body 120 and rotates synchronously with the disk body 301; a permanent magnet 140, located between the electromagnet 110 and the synchronous rotating member 130; an elastic member 150, one end of which is connected to the permanent magnet 140 and the other end is connected to the electromagnet 110; when the electromagnet 110 is energized, it generates a magnetic field opposite to that of the permanent magnet 140, driving the permanent magnet 140 to move toward the synchronous rotating member 130, so that friction resistance is generated between the permanent magnet 140 and the synchronous rotating member 130, so as to limit the speed of the suction cup 30. It is understood that the synchronous rotating member 130 is fixedly connected to the connecting tube 120 and rotates synchronously with the disk 301. The elastic member 150 is used to provide a reset force for the permanent magnet 140, separating the permanent magnet 140 from the synchronous rotating member 130 when the power is off, thereby preventing continuous braking loss. Furthermore, the controller can be configured so that the speed limiting mechanism only responds after the first direction adjustment assembly 40 is activated to reduce standby energy consumption. The speed limiting mechanism operates according to the following principles for speed control:

[0074] ① In the initial state (no power is supplied): the electromagnet 110 has no magnetic field. The permanent magnet 140 maintains the initial distance from the synchronous rotating member 130 under the action of the elastic member 150. There is no contact between the two, and the synchronous rotating member 130 can freely rotate with the suction cup 30. ② In the power-on braking state: after power is supplied to the electromagnet 110, it generates a magnetic field opposite to that of the permanent magnet 140. Like-charged magnets repel each other, causing the permanent magnet 140 to overcome the resistance of the elastic member 150 and move toward the synchronous rotating member 130 until the two make contact. After the permanent magnet 140 and the synchronous rotating member 130 make contact, the friction resistance limits the rotation speed of the synchronous rotating member 130, and thus limits the rotation speed of the suction cup 30.

[0075] The speed limiting mechanism in this application utilizes "electromagnetic force-driven friction braking." The magnetic field strength can be adjusted by current, achieving linearly adjustable friction resistance. This in turn changes the positive pressure exerted by the permanent magnet 140 on the synchronous rotating member 130, achieving a continuously variable braking effect. Specifically: ① First deceleration (single pressure sensor trigger): When the detection value of either the first pressure sensor 60 or the second pressure sensor 70 is greater than zero, a low current is passed through the electromagnet 110, generating a weak magnetic field. The permanent magnet 140 lightly contacts the synchronous rotating member 130, providing a small braking force (e.g., reducing the speed from 300 rpm to 150 rpm), thus preventing sudden stop shock. ② Second deceleration (dual pressure sensor trigger): When the detection values ​​of both the first pressure sensor 60 and the second pressure sensor 70 are greater than zero, a high current is passed through, strengthening the magnetic field. The permanent magnet 140 lightly presses against the synchronous rotating member 130, increasing the braking force (e.g., reducing the speed from 150 rpm to 50 rpm). ③ Locking (triggering with two or three pressure sensors): When the two pressure sensors are triggered, a higher current is passed, the magnetic field is further enhanced, the permanent magnet 140 further presses the synchronous rotating part 130, the braking force is increased, and the suction cup 30 is electromagnetically locked; when the three pressure sensors are triggered, a higher current is passed, the magnetic field is further enhanced, the permanent magnet 140 presses the synchronous rotating part 130, the braking force is increased, and the suction cup 30 is electromagnetically locked. Before processing the touch screen 10, the controller can control the first drive mechanism 401 to drive the first push member to reset to zero position, and the second drive mechanism 501 to drive the second push member to reset to zero position, so as to avoid the processing space limitation caused by the first push plate 403 and the second push plate 503.

[0076] This speed limiting mechanism, through a graded deceleration mechanism, makes the braking process smoother and reduces speed fluctuations. The soft contact characteristics of magnetic braking can greatly reduce impact stress, reduce damage to the touch screen 10, and improve product yield. Through the coordinated design of electromagnetics and mechanics, this speed limiting mechanism has achieved a technological breakthrough of "precise braking, low-loss durability, and flexible adaptation", significantly improving the stability and production efficiency of the touch screen 10 assembly process. In addition, due to the deceleration control of the speed limiting mechanism and the dual safety redundancy of the first flexible plate 404 for the touch screen 10, the movement speed of the first drive mechanism 401 before contact with the touch screen 10 can be increased, thereby further shortening the adjustment and positioning time.

[0077] In some embodiments, the speed limiting mechanism further includes a guide post 190 for guiding the permanent magnet 140. One end of the guide post 190 is connected to the electromagnet 110, and the other end of the guide post 190 is connected to the connecting plate 100. The permanent magnet 140 is slidably mounted on the guide post 190. It is understood that the guide post 190 provides a unique motion path for the permanent magnet 140 through mechanical limitation, ensuring that it moves only axially (perpendicular to the rotation plane of the suction cup 30) under the action of electromagnetic force and elastic force, avoiding radial deviation or tilt; provides a mechanical reference for electromagnetic braking, converting non-contact control into quantifiable contact braking; and by constraining the motion trajectory, simplifies complex spatial forces into a single axial force, reducing the risk of failure caused by multi-variable coupling.

[0078] In some embodiments, there are 2-6 guide posts 190. It is understood that when the number of guide posts 190 is ≥ 2, the two-point limit function can effectively limit the permanent magnet 140, thereby preventing the permanent magnet 140 from deflecting due to frictional resistance generated by the synchronous rotating member 130.

[0079] In some embodiments, a sleeve 220 is further included which is sleeved on the outside of the guide column 190 . The elastic member 150 is a spring which is sleeved on the sleeve 220 . The top of the sleeve 220 is connected to the electromagnet 110 .

[0080] In some embodiments, the support plate 20 is provided with a mounting hole 201, through which the connecting tube 120 is disposed. The synchronously rotating member 130 and the connecting tube 120 utilize an interference fit or keyed connection to ensure synchronous rotation. The elastic member 150 is a spring or elastic rubber member used to reset the permanent magnet 140 when the electromagnet 110 is de-energized. The contact surfaces of the permanent magnet 140 and the synchronously rotating member 130 are both provided with a friction material layer to enhance braking performance.

[0081] In some embodiments, the fixture further includes a rotation speed detection mechanism for detecting the rotation speed of the suction cup 30. The rotation speed detection mechanism includes: an optical signal generating unit 160 for generating a detection light signal; an optical signal receiving unit 170 for receiving the detection light signal; and a grating 180 disposed at the bottom of the synchronous rotating member 130. The grating 180 is disposed in the optical path between the optical signal generating unit 160 and the optical signal receiving unit 170. The optical signal generating unit 160 and the optical signal receiving unit 170 are each electrically connected to a controller. When the synchronous rotating member 130 rotates with the suction cup 30, the grating 180 periodically modulates the detection light signal, and the optical signal receiving unit 170 determines the rotation speed of the suction cup 30 based on the modulation frequency of the detection light signal. It will be understood that this rotation speed detection mechanism implements non-contact rotation speed measurement based on the principle of light intensity modulation. The speed detection mechanism and the speed limiting mechanism can be combined to form a closed-loop control. For example, the controller can be configured to dynamically adjust the current of electromagnet 110 when it detects that the actual speed deviates from the target value by more than ±0.5 rpm, so that the speed quickly converges to the set value (e.g., the second deceleration target is 50 rpm, and the stabilization time is less than 50 ms). Furthermore, the controller can be configured to only respond to the speed limiting mechanism and the speed detection mechanism after the first direction adjustment component 40 is driven, thereby reducing standby energy consumption. When the first direction adjustment component 40 and the second direction adjustment component 50 return to their initial positions, the speed limiting mechanism and the speed detection mechanism are in a shutdown state.

[0082] In some embodiments, the grating 180 is a reflective grating, with the optical signal generating unit 160 and the optical signal receiving unit 170 located on the same side of the synchronously rotating member 130. Alternatively, the grating 180 is a transmissive grating, with the optical signal generating unit 160 and the optical signal receiving unit 170 located on opposite sides of the synchronously rotating member 130. Alternatively, the grating 180 is a linear grating or a radially distributed grating with equal spacing. It will be appreciated that the grating 180 type can be selected singly or in combination based on the accuracy requirements.

[0083] In this embodiment, the grating 180 is a linear grating with equal spacing. The optical signal generating unit 160 is mounted on the connecting plate 100, and the optical signal receiving unit 170 is mounted on the guide post 190. The optical path between the optical signal generating unit 160 and the optical signal receiving unit 170 is angled with the horizontal plane at an angle of 30°-60°. This inclined optical path prevents interference between the optical signal generating unit 160 and the optical signal receiving unit 170 and other components (such as the permanent magnet 140 and the elastic member 150). This improves detection reliability and the overall compactness of the fixture.

[0084] In some embodiments, the operating power of the electromagnet 110 is linearly related to the rotation speed of the suction cup 30 .

[0085] In some embodiments, the first drive mechanism 401 and the second drive mechanism 501 are ball screw modules driven by servo motors. It is understood that the ball screw modules driven by servo motors can achieve high-precision linear drive, which is beneficial for controlling the position adjustment of the touch screen 10.

[0086] In some embodiments, the connecting plate 100 is connected to the underside of the support plate 20 via a mounting housing 230. The outer shape of the lower end of the mounting housing 230 matches the outer shape of the connecting plate 100. An installation space is formed between the connecting plate 100 and the mounting housing 230, and the speed limiting mechanism and the speed detecting mechanism are both installed within the installation space. It is understood that the cross-sectional shape of the mounting housing 230 can be circular or rectangular. The shape of the mounting housing 230 is not limited by this application, as long as the mounting housing 230 and the connecting plate 100 form an installation space to accommodate the speed limiting mechanism and the speed detecting mechanism.

[0087] See also Figure 11 In some embodiments, the touch screen processing fixture further includes an operating table 260 , and the support plate 20 is mounted on the operating table 260 .

[0088] In some embodiments, the controller is a PLC.

[0089] See also Figure 9-10 When only the first pressure sensor 60, the second pressure sensor 70, the third pressure sensor 80, and the fourth pressure sensor 90 are provided, the working process of clamping the touch screen 10 using the touch screen processing fixture of the present application is as follows:

[0090] S1. The first driving mechanism 401 drives the first pushing member to reset to zero position, and the second driving mechanism 501 drives the second pushing member to reset to zero position;

[0091] S2, adsorb the touch screen 10 on the suction cup 30, the initial position is as follows Figure 9 (a)

[0092] S3, such as Figure 9 As shown in (b), the first driving mechanism 401 drives the first push rod 402 to extend in the direction of arrow b. When the detection value of the first pressure sensor 60 is greater than zero (i.e., the first pressure sensor 60 on the first flexible plate 404 contacts the first side surface 101 of the touch screen 10), the controller controls the suction cup 30 to decelerate for the first time. The first driving mechanism 401 drives the first push rod 402 to continue to extend in the direction of arrow b, and the first flexible plate 404 pushes the touch screen 10 to rotate in the direction of arrow a.

[0093] S4, the first driving mechanism 401 drives the first push rod 402 to continue to extend in the direction of arrow b, and the first flexible plate 404 pushes the touch screen 10 to continue to rotate in the direction of arrow a. When the detection value of the second pressure sensor 70 is greater than zero (that is, the second pressure sensor 70 on the first flexible plate 404 contacts the first side surface 101 of the touch screen 10), the controller controls the suction cup 30 to decelerate for the second time; the first driving mechanism 401 drives the first push rod 402 to continue to extend in the direction of arrow b. When the difference between the detection values ​​of the first pressure sensor 60 and the second pressure sensor 70 is less than the threshold value A, the controller controls the first driving mechanism 401 to stop advancing, and at the same time controls the speed limiting mechanism to lock the suction cup 30, completing the position adjustment in the first direction, and the extension length of the first push rod 402 can be obtained, as shown in FIG. Figure 10 (a)

[0094] S5, the second driving mechanism 501 drives the second push rod 502 along Figure 10 (a) extends in the direction of arrow c. When the difference between the detection values ​​of the third pressure sensor 80 and the fourth pressure sensor 90 on the second flexible plate 504 is less than the threshold value B, the controller controls the second driving mechanism 501 to stop advancing, and the extension length of the second push rod 502 can be obtained, completing the positioning of the touch screen 10. Figure 10 (b) As shown; finally, by combining the extension lengths of the first push rod 402 and the second push rod 502 and calculating the assembly position coordinates of the touch screen 10, the position of the touch screen 10 on the fixture can be accurately obtained.

[0095] See also Figures 18-20 When the fifth pressure sensor 200 and the sixth pressure sensor 210 are further added, the working process of clamping the touch screen 10 using the touch screen processing fixture of the present application is as follows:

[0096] S1. The first driving mechanism 401 drives the first pushing member to reset to zero position, and the second driving mechanism 501 drives the second pushing member to reset to zero position;

[0097] S2, adsorb the touch screen 10 on the suction cup 30, the initial position is as follows Figure 18 (a)

[0098] S3, such as Figure 18 As shown in (b), the first driving mechanism 401 drives the first push rod 402 to extend in the direction of arrow b. When the detection value of the first pressure sensor 60 is greater than zero (i.e., the first pressure sensor 60 on the first flexible plate 404 is in contact with the first side surface 101 of the touch screen 10), the controller controls the suction cup 30 to decelerate for the first time. The first driving mechanism 401 drives the first push rod 402 to continue to extend, and the first flexible plate 404 pushes the touch screen 10 to rotate in the direction of arrow a.

[0099] S4, the first driving mechanism 401 drives the first push rod 402 to continue extending in the direction of arrow b. Figure 19 As shown in (a), the first flexible plate 404 pushes the touch screen 10 to continue rotating in the direction of arrow a. When the detection value of the second pressure sensor 70 is greater than zero (i.e., the second pressure sensor 70 on the first flexible plate 404 contacts the first side surface 101 of the touch screen 10), the controller controls the suction cup 30 to decelerate for the second time; the first driving mechanism 401 drives the first push rod 402 to continue extending in the direction of arrow b, and the difference between the detection values ​​of the first pressure sensor 60 and the second pressure sensor 70 is less than the threshold value A. At this time, the first driving mechanism 401 drives the first push rod 402 to continue extending in the direction of arrow b until the detection value of the fifth pressure sensor 200 is greater than zero. The controller controls the first driving mechanism 401 to stop advancing and controls the speed limiting mechanism to lock the suction cup 30 to complete the position adjustment in the first direction. The extension length of the first push rod 402 can be obtained, as shown in FIG. Figure 19 (b)

[0100] S5, such as Figure 20 As shown in (a), the second driving mechanism 501 drives the second push rod 502 to extend in the direction of arrow c until the difference between the detection values ​​of the third pressure sensor 80 and the fourth pressure sensor 90 on the second flexible plate 504 is less than the threshold value B. At this time, the second driving mechanism 501 drives the second push rod 502 to continue to extend in the direction of arrow c until the detection value of the sixth pressure sensor 210 is greater than zero. The controller controls the second driving mechanism 501 to stop advancing, and the extension length of the second push rod 502 can be obtained to complete the positioning of the touch screen 10, as shown in FIG. Figure 20 (b); finally, by combining the final extension lengths of the first push rod 402 and the second push rod 502 and calculating the assembly position coordinates of the touch screen 10, the position of the touch screen 10 on the fixture can be accurately obtained.

Claims

1. A fixture for processing a touch screen, used to fix a touch screen having a first side surface and a second side surface perpendicular to each other, comprising a support plate and a suction cup provided on the support plate for fixing the touch screen, characterized in that: It also includes a first direction adjustment component, a second direction adjustment component and a controller; wherein, The suction cup is rotatably connected to the support plate; The first direction adjustment assembly includes a first driving mechanism and a first pushing member connected to the first driving mechanism, the first pushing member having a first pushing surface that pushes the first side surface of the touch screen, and a first pressure sensor and a second pressure sensor are provided on the first pushing surface; The second direction adjustment assembly includes a second driving mechanism and a second pushing member connected to the second driving mechanism, the second pushing member has a second pushing surface that pushes the second side surface of the touch screen, and a third pressure sensor and a fourth pressure sensor are provided on the second pushing surface; The pushing directions of the first pushing member and the second pushing member are perpendicular to each other, and the heights of the first pushing member and the second pushing member both match the installation height of the touch screen when it is adsorbed on the suction cup; The first pushing member includes a first push rod and a first push plate, one end of the first push rod is connected to the first driving mechanism, the other end of the first push rod is connected to the first push plate, and the first push plate is provided with a first flexible plate having a first pushing surface; the clamp further includes a fifth pressure sensor; both sides of the first flexible plate are inclined toward the suction cup; the first pressure sensor and the second pressure sensor are symmetrically arranged at the edge areas on both sides of the first flexible plate, and the fifth pressure sensor is provided on the first pushing surface and located in the middle of the first flexible plate; The first pressure sensor, the second pressure sensor, the third pressure sensor, the fourth pressure sensor and the fifth pressure sensor are electrically connected to the controller respectively.

2. The touch screen processing fixture according to claim 1, characterized in that: The second pushing member includes a second push rod and a second push plate, one end of the second push rod is connected to the second driving mechanism, the other end of the second push rod is connected to the second push plate, and a second flexible plate with a second pushing surface is provided on the second push plate.

3. The touch screen processing fixture according to claim 2, characterized in that: The clamp also includes a sixth pressure sensor; both sides of the second flexible plate are inclined toward the suction cup; the third pressure sensor and the fourth pressure sensor are symmetrically arranged in the edge areas on both sides of the second flexible plate; the sixth pressure sensor is arranged on the second pushing surface and is located in the middle of the second flexible plate, and the sixth pressure sensor is electrically connected to the controller.

4. The touch screen processing fixture according to claim 3, characterized in that: The first pressure sensor and the second pressure sensor are located at the same installation height, and the detection center point of the first pressure sensor and the detection center point of the second pressure sensor are respectively aligned with two side edges of the first side surface of the touch screen; And / or, the third pressure sensor and the fourth pressure sensor are located at the same installation height, and the detection center point of the third pressure sensor and the detection center point of the fourth pressure sensor are respectively aligned with two side edges of the second side surface of the touch screen; And / or, the midpoint of the line connecting the first pressure sensor and the second pressure sensor coincides with the geometric center of the first side surface of the touch screen; And / or, the midpoint of the line connecting the third pressure sensor and the fourth pressure sensor coincides with the geometric center of the second side surface of the touch screen; and / or, on the first side surface of the touch screen, a length of a line connecting a position where a detection center point of the first pressure sensor is aligned and a position where a detection center point of the second pressure sensor is aligned is 80%-95% of a length of the first side surface of the touch screen; And / or, on the second side surface of the touch screen, the length of a line connecting the position where the detection center point of the third pressure sensor is aligned with the position where the detection center point of the fourth pressure sensor is aligned is 80%-95% of the length of the second side surface of the touch screen; And / or, the first flexible plate includes a first middle plate and two first wing plates symmetrically connected on both sides of the first middle plate, and outer edges of the two first wing plates are inclined toward the suction cup; the first pressure sensor and the second pressure sensor are respectively located on the two first wing plates, and the fifth pressure sensor is located on the first middle plate; And / or, the second flexible plate includes a second middle plate and two second wing plates symmetrically connected on both sides of the second middle plate, and the outer edges of the two second wing plates are inclined toward the suction cup; the third pressure sensor and the fourth pressure sensor are respectively located on the two second wing plates, and the sixth pressure sensor is located on the second middle plate.

5. The touch screen processing fixture according to claim 4, characterized in that: The fifth pressure sensor is located on the connecting line of the first pressure sensor and the second pressure sensor; the fifth pressure sensor is installed at the same height as the first pressure sensor and the second pressure sensor; And / or, the sixth pressure sensor is installed at the same height as the third pressure sensor and the fourth pressure sensor; And / or, the detection center point of the fifth pressure sensor is aligned with the geometric center of the first side surface of the touch screen; And / or, the detection center point of the sixth pressure sensor is aligned with the geometric center of the second side surface of the touch screen; And / or, the first wing plate is a rectangular plate or an arc-shaped plate; And / or, the second wing plate is a rectangular plate or an arc-shaped plate.

6. The touch screen processing fixture according to claim 5, characterized in that: The suction cup comprises: The disc body has a plurality of air extraction holes on its top surface and an air suction cavity communicating with the air extraction holes is formed inside; The exhaust pipe includes a quick-release joint for connecting to an external exhaust device, a rotating tube, and a fixed tube. The rotating tube and the fixed tube are connected by a rotating connector. The other end of the rotating tube is connected to the disc body, and the rotating tube communicates with the suction cavity inside the disc body. The quick-release joint is connected to the other end of the fixed tube. The connecting plate is fixed below the supporting plate, and the rotating connecting piece is connected to the connecting plate.

7. The touch screen processing fixture according to claim 6, characterized in that: The clamp further includes a rotation speed limiting mechanism for limiting the rotation speed of the suction cup, and the rotation speed limiting mechanism is electrically connected to the controller.

8. The touch screen processing fixture according to claim 7, characterized in that: The speed limiting mechanism comprises: an electromagnet fixedly connected to the bottom surface of the support plate and electrically connected to the controller; A connecting tube body, one end of which is fixedly connected to the bottom of the disc body, is sleeved on the outside of the exhaust pipe, and extends in a direction away from the disc body; A synchronous rotating member is sleeved on the connecting tube body and rotates synchronously with the disc body; a permanent magnet, located between the electromagnet and the synchronous rotating member; an elastic member, one end of which is connected to the permanent magnet and the other end of which is connected to the electromagnet; When the electromagnet is energized, it generates a magnetic field opposite to that of the permanent magnet, driving the permanent magnet to move toward the synchronous rotating member, so that friction resistance is generated between the permanent magnet and the synchronous rotating member to limit the rotation speed of the disk.

9. The touch screen processing fixture according to claim 8, characterized in that: The fixture further includes a rotation speed detection mechanism for detecting the rotation speed of the suction cup; the rotation speed detection mechanism includes: An optical signal generating unit, configured to generate a detection optical signal; an optical signal receiving unit, configured to receive the detection optical signal; A grating is provided at the bottom of the synchronous rotating member; In which, the grating is arranged on the optical path between the optical signal generating unit and the optical signal receiving unit; the optical signal generating unit and the optical signal receiving unit are electrically connected to the controller respectively; when the synchronous rotating part rotates following the suction cup, the grating periodically modulates the detection light signal, and the optical signal receiving unit determines the rotation speed of the suction cup according to the modulation frequency of the detection light signal.

10. The touch screen processing fixture according to claim 9, characterized in that: The speed limiting mechanism further includes a guide post for guiding the permanent magnet, one end of the guide post is connected to the electromagnet, the other end of the guide shaft is connected to the connecting plate, and the permanent magnet is slidably sleeved on the guide post; And / or, the elastic member is a spring or an elastic rubber member, which is used to reset the permanent magnet when the electromagnet is powered off; And / or, the contact surfaces of the permanent magnet and the synchronous rotating member are both provided with a friction material layer for enhancing the braking effect; And / or, the grating is a reflective grating, and the optical signal generating unit and the optical signal receiving unit are located on the same side of the synchronous rotating member; And / or, the grating is a transmission grating, and the optical signal generating unit and the optical signal receiving unit are respectively located on both sides of the synchronous rotating member; And / or, the grating is a linear grating or a radially distributed grating with equal spacing; and / or, the operating power of the electromagnet is linearly related to the rotational speed of the suction cup; And / or, the first driving mechanism and the second driving mechanism are ball screw modules driven by servo motors; And / or, the controller is a PLC.

Images