Automatic pressure regulating laser welding device and automatic pressure regulating method

Abstract

The application relates to the technical field of laser welding, in particular to an automatic pressure-adjusting laser welding device and an automatic pressure-adjusting method, which comprise a welding machine table, a guide column and a baffle fixed on the welding machine table, a fixed plate is fixed at the end of the guide column, and a laser welding device is fixed on the fixed plate; a bearing assembly is arranged on the welding machine table and is used for bearing a glass slide; a supporting plate slides along the guide column in the axial direction, a pressing limiting mechanism is arranged on the supporting plate, the pressing limiting mechanism comprises symmetrically-arranged pressing plates and is used for limiting the glass slide; and a follow-up pressure-adjusting mechanism is arranged on the pressing limiting mechanism. When the glass slide is heat-deformed due to heat caused by laser welding, the follow-up pressure-adjusting mechanism can control the movement of the pressing plates, and under the action of the pressing limiting mechanism and the follow-up pressure-adjusting mechanism, the downward pressure on the glass slide can be automatically adjusted according to the heat-deformation amount, so that the problem that the glass slide is damaged due to stress concentration caused by heat deformation can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser welding, in particular to an automatic pressure regulating laser welding device and an automatic pressure regulating method. BACKGROUND

[0002] When laser welding a slide, in order to ensure welding accuracy, the slide can be fixed by providing a certain downward pressure to the slide to prevent the slide from shifting or vibrating during welding.

[0003] When the slide is placed on the stage, a groove or a convex column is usually formed on the stage to match the slide, thereby positioning the slide around the perimeter. In combination with the downward pressure applied to the top of the slide, slight displacement of the slide during welding can be effectively avoided.

[0004] Therefore, before welding, the pressure plate can be pushed to adhere to the slide by a pneumatic cylinder or a hydraulic cylinder to perform a limiting action on the slide. However, since the slide will undergo thermal deformation after being heated, rigid limiting completely restricts the thermal expansion of the slide, which will cause a dramatic increase in local stress, especially in the high-temperature welding area, which is prone to micro-cracks or overall fragmentation.

[0005] To this end, rigid limiting can be replaced by elastic limiting, which allows the slide to be lifted and accommodated when thermal deformation occurs to release the stress generated by thermal deformation. However, if the initial pressure of the elastic limiting is set too high, the downward pressure provided to the slide when thermal deformation occurs may be too large, causing the slide to break. If the initial pressure of the elastic limiting is set too low, the limiting force provided at the initial stage of welding may be insufficient, which may cause the slide to shift. SUMMARY

[0006] The present application aims to provide an automatic pressure regulating laser welding device and an automatic pressure regulating method to solve the problems raised in the background.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0008] The automatic pressure regulating laser welding device comprises:

[0009] A welding stage, a guide column and a baffle fixed on the welding stage, the end of the guide column is fixed with a fixed plate, and the fixed plate is fixed with a laser welder;

[0010] Further comprising:

[0011] A carrying assembly is arranged on the welding stage for carrying the slide;

[0012] A support plate is axially slid along the guide column, and a pressing and limiting mechanism is arranged on the support plate, including pressing plates symmetrically arranged to limit the slide.

[0013] A follow-up pressure adjusting mechanism is arranged on the pressing and limiting mechanism, and the follow-up pressure adjusting mechanism can adjust the support force provided to the pressing plate through the pressing and limiting mechanism when the pressing plate is displaced.

[0014] As a further scheme of the present application, the bearing assembly includes a rotating disc rotatably mounted on the welding machine, and two object tables are fixedly arranged on the rotating disc at a circumferentially equidistant interval, and a plurality of convex columns for limiting the slide are fixed on the object tables.

[0015] As a further scheme of the present application, a second air cylinder is fixedly arranged on the fixed plate in a symmetric manner, and the telescopic end of the second air cylinder is fixedly connected with the support plate.

[0016] As a further scheme of the present application, the pressing and limiting mechanism includes a support column fixed on the support plate, and an active plate is axially slid on the support column, and the active plate is fixedly connected with the pressing plate.

[0017] As a further scheme of the present application, the pressing and limiting mechanism further includes a rotating rod rotatably mounted on the support plate, and follow-up plates are fixedly arranged on the rotating rod in a symmetric manner, and a connecting rod is fixed between the two follow-up plates, and limiting wheels are fixed on the connecting rod in a symmetric manner and abut against the active plate.

[0018] As a further scheme of the present application, the follow-up pressure adjusting mechanism includes a first active sleeve and a second active sleeve axially slid along the rotating rod, and a first connecting plate is fixed on the first active sleeve, and a second connecting plate is fixed on the second active sleeve.

[0019] A guide assembly and an elastic assembly are further arranged on the rotating rod and connected with the follow-up plates to adjust the rotation resistance of the rotating rod.

[0020] As a further scheme of the present application, the guide assembly includes first and second spiral grooves formed on the circumferential outer wall of the rotating rod, a first limiting block is fixed on the inner wall of the first active sleeve and slidably fitted in the first spiral groove, and a second limiting block is fixed on the inner wall of the second active sleeve and slidably fitted in the second spiral groove.

[0021] As a further scheme of the present application, the elastic assembly includes first and second springs sleeved on the rotating rod, and the two ends of the first spring respectively abut against the follow-up plates and the first connecting plate, and the two ends of the second spring respectively abut against the follow-up plates and the second connecting plate.

[0022] As a further scheme of the present application: the welding machine is provided with a guide rail, a partition plate is slidably installed in the guide rail, and a first cylinder fixedly connected with the partition plate is fixed in the welding machine.

[0023] The automatic pressure regulating method of the laser welding device comprises the following steps:

[0024] Step one: placing the glass slide to be welded on the bearing assembly, and the bearing assembly controls the glass slide to move to the desired welding position;

[0025] Step two: the support plate controls the movement of the pressing plate through the pressing limiting mechanism, and when the pressing plate is attached to the glass slide, the pressing limiting mechanism and the follow-up pressure regulating mechanism provide a downward pressure to the pressing plate to lock the position of the glass slide;

[0026] Step three: the laser welder can perform laser welding treatment on the glass slide;

[0027] Step four: when the glass slide is deformed by heat and acts on the pressing plate, the follow-up pressure regulating mechanism and the pressing limiting mechanism automatically adjust the downward pressure on the pressing plate.

[0028] Compared with the prior art, the present application has the following advantages: when the glass slide is deformed by heat, the pressing plate can be allowed to give way to ensure that the stress generated by the thermal deformation of the glass slide can be released in time. Specifically, the glass slide can be placed on the bearing assembly, and under the action of the bearing assembly, the glass slide can be moved to the desired welding position. When the pressing plate is in contact with the surface of the glass slide, the pressing plate limits the glass slide in the vertical direction under the action of the pressing limiting mechanism and the follow-up pressure regulating mechanism. During laser welding, the glass slide will be deformed by heat, thereby lifting the pressing plate. The pressing plate will drive the pressing limiting mechanism and the follow-up pressure regulating mechanism to move, and under the action of the follow-up pressure regulating mechanism, the downward pressure of the pressing plate on the glass slide is automatically adjusted, so that the pressing plate can automatically give way when the glass slide is deformed by heat, and the downward pressure provided to the glass slide is always maintained within a certain range.

[0029] The pressing plate allows the glass slide to be slightly lifted when it is deformed by heat, thereby releasing part of the thermal deformation displacement, preventing the complete restriction of the thermal expansion of the glass slide from causing a sharp increase in local stress, and preventing the generation of micro-cracks or overall fragmentation in the high-temperature welding area.

[0030] During the jacking process, by adjusting the vertical component force of the limiting wheel on the pressing plate, and compressing the first spring and releasing the second spring, the counterclockwise rotation trend of the rotating rod is enhanced, so that the overall force borne by the limiting wheel is increased, to compensate for the loss of vertical component force caused by the increase of the included angle, in this way, the glass slide can freely release the stress generated by thermal deformation, and at the same time, it can always be subjected to moderate and stable downward pressure, which not only prevents the micro-displacement of the glass slide caused by the impact of laser welding, but also avoids the problem of increased pressure caused by thermal deformation. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 Structure schematic diagram of the embodiment of the automatic pressure regulating laser welding device.

[0032] Figure 2 Structure schematic diagram of another angle in the embodiment of the automatic pressure regulating laser welding device.

[0033] Figure 3 Structure schematic diagram of the cross section of the welding machine and the baffle in the embodiment of the automatic pressure regulating laser welding device.

[0034] Figure 4 Structure schematic diagram of the inside of the welding machine in the embodiment of the automatic pressure regulating laser welding device.

[0035] Figure 5 Connection relationship schematic diagram of the support plate, the follow-up pressure regulating mechanism and the pressing limiting mechanism in the embodiment of the automatic pressure regulating laser welding device.

[0036] Figure 6 Structure schematic diagram of the follow-up pressure regulating mechanism in the embodiment of the automatic pressure regulating laser welding device. Figure 5 Enlarged structure schematic diagram of position A in the embodiment of the automatic pressure regulating laser welding device.

[0037] Figure 7 Structure schematic diagram of part of the follow-up pressure regulating mechanism and the pressing limiting mechanism in the embodiment of the automatic pressure regulating laser welding device.

[0038] Figure 8 Structure schematic diagram of part of the pressing limiting mechanism and part of the follow-up pressure regulating mechanism in the embodiment of the automatic pressure regulating laser welding device.

[0039] Figure 9 Structure schematic diagram of part of the pressing limiting mechanism and part of the follow-up pressure regulating mechanism in the embodiment of the automatic pressure regulating laser welding device.

[0040] Figure 10 Exploded structure schematic diagram of part of the pressing limiting mechanism and part of the follow-up pressure regulating mechanism in the embodiment of the automatic pressure regulating laser welding device.

[0041] In the diagram: 1. Welding machine; 101. Guide rail; 2. Baffle; 3. First cylinder; 4. Partition; 5. Rotary disk; 6. Platform; 601. Protruding column; 7. Guide column; 8. Fixing plate; 9. Laser welder; 10. Second cylinder; 11. Support plate; 12. Support column; 1201. Fixing ring; 13. Movable plate; 14. Pressure plate; 15. Rotating rod; 1501. First spiral groove; 1502. Second spiral groove; 16. Follower plate; 17. Connecting rod; 18. Limiting wheel; 19. First movable sleeve; 1901. First limiting block; 20. First connecting plate; 21. First spring; 22. Second movable sleeve; 2201. Second limiting block; 23. Second connecting plate; 24. Second spring. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0044] Please see Figures 1-10 In this embodiment of the invention, the automatically voltage-adjustable laser welding apparatus includes:

[0045] A welding machine base 1, and a guide column 7 and a baffle 2 fixed on the welding machine base 1, wherein a fixing plate 8 is fixed at the end of the guide column 7, and a laser welder 9 is fixed on the fixing plate 8;

[0046] Also includes:

[0047] A support assembly, mounted on the welding machine 1, is used to support the glass slide;

[0048] The support plate 11 slides along the axial direction of the guide column 7. The support plate 11 is provided with a pressing and limiting mechanism, including symmetrically arranged pressing plates 14 for limiting the glass slide.

[0049] A follow-up pressure adjustment mechanism is provided on the pressing and limiting mechanism. When the pressure plate 14 is displaced, the follow-up pressure adjustment mechanism can adjust the supporting force provided to the pressure plate 14 through the pressing and limiting mechanism.

[0050] Specifically, during laser welding of a glass slide, the slide can be placed on a support assembly, and under the action of the support assembly, the slide moves to the desired welding position. At this time, the support plate 11 can slide along the axial direction of the guide post 7, so that the pressure plate 14 can be moved towards the glass slide through the pressing and limiting mechanism. When the pressure plate 14 abuts against the surface of the glass slide, under the action of the pressing and limiting mechanism and the follow-up pressure adjustment mechanism, the pressure plate 14 limits the glass slide to ensure that the position of the glass slide will not shift during the welding process. At this time, the laser welder can be used to weld the slide. 9. Laser welding is performed on the glass slides. During laser welding, the glass slides will be heated and undergo thermal deformation, which will lift the pressure plate 14. The pressure plate 14 will drive the pressing and limiting mechanism and the follow-up pressure adjustment mechanism to move. Under the action of the follow-up pressure adjustment mechanism, the downward pressure of the pressure plate 14 on the glass slide will be adaptively adjusted so that the downward pressure provided by the pressure plate 14 to the glass slide is always kept within a certain range when the glass slide undergoes thermal deformation. This avoids the problem of stress concentration caused by thermal deformation of the glass slide due to rigid limiting, which could lead to damage to the glass slide.

[0051] Please see Figures 1-4 The supporting component includes a rotating disk 5 rotatably mounted on the welding machine base 1. Two platforms 6 are fixed on the rotating disk 5 and are equidistantly distributed in a circle. Multiple protrusions 601 for limiting the position of the glass slide are fixed on the platforms 6.

[0052] Please see Figure 3 The welding machine base 1 is provided with a guide rail 101, and a partition 4 is slidably installed in the guide rail 101. A first cylinder 3 is fixedly connected to the partition 4 inside the welding machine base 1.

[0053] In detail, the stage 6 is provided with two protruding pillars 601. Multiple protruding pillars 601 are provided. After multiple protruding pillars 601 are combined, a loading groove is formed in the middle. The glass slide can be placed in the loading groove. Under the action of the protruding pillars 601, the glass slide is positioned on all four sides to ensure that the glass slide will not shift.

[0054] In the initial state, under the action of the first cylinder 3, the partition 4 is located at the end of its stroke away from the rotating disk 5. When welding of the glass slide is required, the rotating disk 5 rotates half a turn, causing the stage 6 carrying the glass slide to move to the required welding position, and the other stage 6 to move to the loading position, so that the glass slide is placed on the other stage 6. During the welding process, the first cylinder 3 controls the partition 4 to slide along the length of the guide rail 101 and move towards the rotating disk 5 until the partition 4 is in contact with the rotating disk 5. Under the action of the partition 4 and the baffle 2, the welding area is sealed to avoid interference from external factors. After the welding is completed, the first cylinder 3 controls the partition 4 to reset. By repeating the above steps, the effect of automatically loading and transporting the glass slide can be achieved.

[0055] Please see Figure 4 A second cylinder 10 is fixed on the fixed plate 8 and is arranged symmetrically. The telescopic end of the second cylinder 10 is fixedly connected to the support plate 11.

[0056] Please see Figures 4-10 The pressing and limiting mechanism includes a support column 12 fixed on the support plate 11, a movable plate 13 slidably disposed on the support column 12, the movable plate 13 being fixedly connected to the pressure plate 14, and a rotating rod 15 rotatably mounted on the support plate 11. A symmetrically arranged follower plate 16 is fixed on the rotating rod 15, and a connecting rod 17 is fixed between the two follower plates 16. A limiting wheel 18 symmetrically arranged and in contact with the movable plate 13 is fixed on the connecting rod 17.

[0057] Please see Figures 4-10 The follow-up pressure regulating mechanism includes a first movable sleeve 19 and a second movable sleeve 22 that slide along the axial direction of the rotating rod 15. A first connecting plate 20 is fixed on the first movable sleeve 19, and a second connecting plate 23 is fixed on the second movable sleeve 22. It also includes a guide assembly and an elastic assembly disposed on the rotating rod 15 and connected to the follow-up plate 16, for adjusting the rotational resistance of the rotating rod 15. The guide assembly includes a first spiral groove 1501 and a second spiral groove 1502 formed on the outer circumferential wall of the rotating rod 15. The inner wall of the cylinder 19 is fixed with a first limiting block 1901 that slides into the first spiral groove 1501, and the inner wall of the second movable sleeve 22 is fixed with a second limiting block 2201 that slides into the second spiral groove 1502. The elastic component includes a first spring 21 and a second spring 24 sleeved on the rotating rod 15. The two ends of the first spring 21 abut against the adjacent follower plate 16 and the first connecting plate 20, respectively. The two ends of the second spring 24 abut against the adjacent follower plate 16 and the second connecting plate 23, respectively.

[0058] Please see Figure 10 Furthermore, the rotating rod 15 is symmetrically arranged, therefore, there are two first movable sleeves 19 and two second movable sleeves 22 respectively. The follower plate 16 is also symmetrically arranged in two sets. Therefore, the two sets of limit wheels 18 can provide symmetrical downward pressure to the movable plate 13. The support plate 11 forms a through hole in the center. There is also enough space between the first connecting plate 20 and the second connecting plate 23 to ensure that there is no interference with laser welding. The first spiral groove 1501 and the second spiral groove 1502 have the same angle in the circumferential direction. However, in terms of the axial length of the rotating rod 15, the axial length of the first spiral groove 1501 is greater than the axial length of the second spiral groove 1502. The end of the support column 12 facing away from the support plate 11 is fixed with a fixing ring 1201.

[0059] The elastic potential energy of the first spring 21 is greater than that of the second spring 24. That is, the thrust provided by the first spring 21 to the first connecting plate 20 is greater than the thrust provided by the second spring 24 to the second connecting plate 23. For details, please refer to [link to relevant documentation]. Figure 8 Under the combined force of the first spring 21 and the second spring 24 on the left, the left rotating rod 15 will always have a counterclockwise rotation tendency. Under the combined force of the first spring 21 and the second spring 24 on the right, the right rotating rod 15 will always have a clockwise rotation tendency. Under this force, the angle between the follower plate 16 and the pressure plate 14 increases, and the limiting wheel 18 is controlled to abut against the movable plate 13 through the connecting rod 17, so that the pressure plate 14 and the movable plate 13 are at the end of their stroke away from the support plate 11. At this time, the movable plate 13 and the fixed ring... 1201 are mutually abutting, and under the action of the pressure of the limiting wheel 18, the pressure plate 14 always has a thrust moving away from the support plate 11. The follower plate 16 is arranged in an L-shape. The section of the follower plate 16 parallel to the pressure plate 14 is the horizontal section, and the section of the follower plate 16 perpendicular to the pressure plate 14 is the vertical section. In this state, since the horizontal section of the follower plate 16 is parallel to the movable plate 13, the rotational force is completely applied to the movable plate 13 through the limiting wheel 18. Therefore, in this state, the limiting wheel 18 provides the maximum downward pressure to the movable plate 13.

[0060] by Figure 8 Taking the rotation state of the rotating rod 15 on the left side as an example, the rotation state of the rotating rod 15 under the elastic force of the first spring 21 and the second spring 24 is analyzed as follows:

[0061] In the initial state, under the action of the second cylinder 10, the distance between the support plate 11 and the rotating disk 5 is maximized, so that the pressure plate 14 and the platform 6 are separated. The first limiting block 1901 is located at the end of the stroke of the first spiral groove 1501 near the second spiral groove 1502, so that the distance between the first connecting plate 20 and the adjacent follower plate 16 is maximized. The elongation of the first spring 21 in its natural state is greater than the maximum distance between the first connecting plate 20 and the adjacent follower plate 16. Therefore, the first spring 21 is in a pre-compressed state and always provides the first connecting plate 20 with a thrust in the direction away from the adjacent follower plate 16. Under the action of the first limiting block 1901 and the first spiral groove 1501, the rotating rod 15 has a tendency to rotate counterclockwise.

[0062] The second limiting block 2201 is located at the end of the stroke of the second spiral groove 1502 on the side away from the first spiral groove 1501, so that the distance between the second connecting plate 23 and the adjacent follower plate 16 is minimized. The elongation of the second spring 24 in its natural state is greater than the maximum distance between the second connecting plate 23 and the adjacent follower plate 16. Therefore, the second spring 24 is also in a pre-compressed state and always provides the second connecting plate 23 with a thrust in the direction away from the adjacent follower plate 16. Under the action of the second limiting block 2201 and the second spiral groove 1502, the rotating rod 15 has a tendency to rotate clockwise.

[0063] When laser welding is required on a glass slide, in order to prevent the glass slide from shifting during the laser welding process and causing deviation in the welding position, a certain downward pressure needs to be applied to the glass slide to ensure that the glass slide is always located between the protrusions 601. To this end, under the action of the second cylinder 10, the support plate 11 is controlled to slide along the axial direction of the guide column 7 and move towards the rotating disk 5. This causes the movable plate 13 and the pressure plate 14 to move synchronously through the support column 12. When the pressure plate 14 is in contact with the glass slide, the position of the glass slide in the vertical direction is restricted under the action of the pressure plate 14 to prevent the glass slide from shifting or vibrating during the welding process and to ensure welding accuracy.

[0064] Because laser welding generates a lot of heat, the glass slide will undergo thermal deformation after heating. If a rigid limiting method is used to directly act on the glass slide and completely restrict its displacement, stress concentration will occur in the thermal deformation area of ​​the glass slide when thermal deformation occurs, leading to damage in that area. However, the limiting method for the glass slide in this application is elastic. When the glass slide undergoes thermal deformation, the pressure plate 14 will be lifted, and the movable plate 13 will be controlled to slide along the axial direction of the support column 12 and move towards the support plate 11. The pressure plate 14 will also drive the limiting wheel 18 to move, and the follower plate 16 will be controlled to swing away from the support column 12 through the connecting rod 17.

[0065] As a result, the angle between the horizontal section of the follower plate 16 and the pressure plate 14 will increase, which will cause the vertical component of the force acting on the pressure plate 14 to decrease after the counterclockwise rotation force of the rotating rod 15 is transmitted to the limit wheel 18.

[0066] The follower plate 16 also drives the rotating rod 15 to rotate clockwise, thereby causing the first spiral groove 1501 and the second spiral groove 1502 to move. Under the action of the first spiral groove 1501 and the first limiting block 1901, the first movable sleeve 19 moves away from the second movable sleeve 22 and compresses the first spring 21. Under the action of the second spiral groove 1502 and the second limiting block 2201, the second movable sleeve 22 moves towards the first movable sleeve 19 to elastically release the second spring 24. Since the first connecting plate 20 and the second connecting plate 23 have a guiding function, they can ensure that the first movable sleeve 19 and the second movable sleeve 22 move along the axis of the rotating rod 15. The first spring 21 is compressed, which increases the counterclockwise rotational force provided to the rotating rod 15. The second spring 24 is released elastically, which decreases the clockwise rotational force provided to the rotating rod 15. The compression of the first spring 21 is greater than the release of the second spring 24. As a result, the counterclockwise rotational force provided to the rotating rod 15 by the resultant force of the first spring 21 and the second spring 24 is further increased and is always within the required range. That is, the resistance increases when the rotating rod 15 rotates clockwise, and the downward pressure transmitted to the limiting wheel 18 increases, thereby compensating for the decrease in the vertical component force caused by the increase in the angle between the follower plate 16 and the pressure plate 14.

[0067] Preferably, the pressure plate 14, through elastic downward pressure, allows for a slight lifting action when the glass slide undergoes thermal deformation after heating, thereby releasing some of the thermal deformation displacement. This prevents the complete restriction of the glass slide's thermal expansion from causing a surge in local stress, which could easily lead to micro-cracks or overall breakage, especially in the high-temperature welding area. Simultaneously, during the lifting process, by adjusting the vertical component force formed by the limiting wheel 18 on the pressure plate 14, compressing the first spring 21, and releasing the second spring 24, the counterclockwise rotation tendency of the rotating rod 15 is enhanced. This increases the overall force on the limiting wheel 18, compensating for the loss of vertical component force caused by the increased angle. In this way, the glass slide can freely release the stress generated by thermal deformation while always being subjected to moderate and stable downward pressure. This prevents micro-displacement of the glass slide caused by the impact of laser welding and avoids the problem of increased pressure due to thermal deformation.

[0068] An automatic pressure adjustment method for laser welding equipment includes the following steps:

[0069] Step 1: Place the glass slide to be welded on the support assembly, and the support assembly controls the glass slide to move to the desired welding position;

[0070] Step 2: The support plate 11 controls the movement of the pressure plate 14 through the pressing and limiting mechanism, and when the pressure plate 14 is in contact with the glass slide, the pressing and limiting mechanism and the follow-up pressure adjustment mechanism provide downward pressure to the pressure plate 14 to lock the position of the glass slide.

[0071] Step 3: Laser welder 9 can perform laser welding on the glass slide;

[0072] Step 4: When the glass slide deforms due to heat and acts on the pressure plate 14, the follow-up pressure adjustment mechanism and the pressing limit mechanism adaptively adjust the downward pressure on the pressure plate 14.

[0073] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0074] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic pressure regulating laser welding device, comprising: a welding machine table, and a guide column and a baffle plate fixed on the welding machine table, the end of the guide column is fixed with a fixed plate, and the fixed plate is fixed with a laser welder; characterized in that it further comprises: a bearing assembly provided on the welding machine table for bearing the slide glass; a support plate sliding along the guide column, the support plate is provided with a pressing and limiting mechanism, including symmetrically arranged pressing plates for limiting the slide glass; a follow-up pressure regulating mechanism provided on the pressing and limiting mechanism, which can adjust the support force provided to the pressing plate through the pressing and limiting mechanism when the pressing plate is displaced; the pressing and limiting mechanism comprises a support column fixed on the support plate, the support column axially slides with a movable plate, and the movable plate is fixedly connected with the pressing plate; the pressing and limiting mechanism further comprises a rotating rod rotatably installed on the support plate, the rotating rod is fixed with symmetrically arranged follow-up plates, a connecting rod is fixed between the two follow-up plates, and the connecting rod is fixed with symmetrically arranged limiting wheels in contact with the movable plate; the follow-up pressure regulating mechanism comprises a first movable sleeve and a second movable sleeve sliding along the rotating rod, the first movable sleeve is fixed with a first connecting plate, and the second movable sleeve is fixed with a second connecting plate; further comprising a guide assembly and an elastic assembly provided on the rotating rod and connected with the follow-up plate for adjusting the rotation resistance of the rotating rod; the guide assembly comprises a first spiral groove and a second spiral groove formed on the circumferential outer wall of the rotating rod, the first movable sleeve is fixed with a first limiting block slidingly fitted into the first spiral groove, and the second movable sleeve is fixed with a second limiting block slidingly fitted into the second spiral groove; the elastic assembly comprises a first spring and a second spring sleeved on the rotating rod, the two ends of the first spring are respectively in contact with the follow-up plate and the first connecting plate, and the two ends of the second spring are respectively in contact with the follow-up plate and the second connecting plate.

2. The self-regulated laser welding apparatus of claim 1, wherein, the bearing assembly comprises a rotating disc rotatably installed on the welding machine table, the rotating disc is fixed with two object tables distributed at equal intervals in the circumference, and the object tables are fixed with a plurality of convex columns for limiting the slide glass.

3. The self-regulated laser welding apparatus of claim 1, wherein, the fixed plate is fixed with symmetrically arranged second air cylinders, and the telescopic ends of the second air cylinders are fixedly connected with the support plate.

4. The self-regulated laser welding apparatus of claim 1, wherein, a guide rail is formed on the welding machine table, a partition plate is slidingly installed in the guide rail, and a first air cylinder fixedly connected with the partition plate is fixed in the welding machine table.

5. Method for automatic pressure regulation of a laser welding device, using a laser welding device with automatic pressure regulation according to any one of claims 1 to 4, characterized in that comprising the following steps: step one: placing the slide glass to be welded on the bearing assembly, and controlling the slide glass to move to the desired welding position by the bearing assembly; step two: controlling the pressing plate to move by the support plate through the pressing and limiting mechanism, and providing the pressing plate with a pressing force through the pressing and limiting mechanism and the follow-up pressure regulating mechanism when the pressing plate is in contact with the slide glass, so as to lock the position of the slide glass; step three: the laser welder can perform laser welding treatment on the slide glass; Step four: the slide glass is deformed by heat and acts on the pressing plate, and the follow-up pressure adjusting mechanism and the pressing limiting mechanism automatically adjust the pressing force on the pressing plate.

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