Glass pressing plate preheating and laser welding all-in-one machine

Abstract

The invention discloses a glass pressing plate preheating and laser welding all-in-one machine, and relates to the technical field of laser welding equipment, in particular to a base and a laser welding device, and the top of the base is provided with an XY transmission platform and a welding platform which are in transmission connection with the laser welding device; the laser welding device can automatically move left and right or front and back outside the top of the welding platform under transmission of the XY transmission platform, the top of the welding platform is covered with a glass cover plate, and the two sides of the glass cover plate are in transmission connection with first servo electric push rods arranged in the welding platform in a sleeved mode. Through the arranged XY transmission platform, after the clamping mechanism formed by the glass cover plate and the two first servo electric push rods is matched with the laser welding device for combined operation, the laser welding device can conduct welding preheating on a workpiece to be welded under transmission of the XY transmission platform, and the influence of laser local top-speed heating on plate deformation is improved; and the clamping mechanism is matched with the welding platform to press and limit the to-be-machined workpiece.

Description

TECHNICAL FIELD

[0001] The application relates to the field of laser welding equipment, in particular to a glass pressing plate preheating laser welding all-in-one machine. BACKGROUND

[0002] As a kind of high-efficiency precision welding method using high-energy density laser beam as heat source, laser welding is usually used for welding thin-walled materials and low-speed welding, and the welding process belongs to heat conduction type, and the main principle is to heat the workpiece surface by laser radiation, the surface heat diffuses to the inside through heat conduction, by controlling the width, energy, peak power and repetition frequency of laser pulse and other parameters, the workpiece is melted, a specific molten pool is formed, and finally the welding purpose is met.

[0003] At present, with the expansion of the use range of laser welding, when it faces the welding demand of large-size plate, although it can also maintain high processing efficiency, but due to the large plate and the heat conduction type of the welding process, the plate heating speed in the welding process is fast, which leads to the increase of the plate deformation probability after welding, and reduces the processing quality. SUMMARY

[0004] The application provides a glass pressing plate preheating laser welding all-in-one machine, which solves the technical problems in the background art.

[0005] In order to achieve the above purpose, the application adopts the following technical scheme: a glass pressing plate preheating laser welding all-in-one machine, comprising a base, a laser welding device, the top of the base is provided with an XY transmission platform and a welding platform which are transmissionally connected with the laser welding device, and the laser welding device can automatically displace left or right or forward and backward outside the top of the welding platform under the transmission of the XY transmission platform, the top of the welding platform is covered with a glass cover plate, and the two sides of the glass cover plate are transmissionally connected with first servo electric push rods which are sleeved in the welding platform, and the glass cover plate can clamp the top of the welding platform under the transmission of the first servo electric push rods.

[0006] Preferably, the laser welding device comprises a laser generator, an optical system, a power module and a cooling device, the XY transmission platform comprises a rack, a frame type platform, a first limiting shaft is clamped in the rear end of the frame type platform and is fixedly sleeved in the rear end of the top of the rack, a first nut is sleeved in the front end of the frame type platform, a first lead screw is threadedly connected in the first nut and is sleeved in the front end of the top of the rack, one end of the first lead screw is drivingly connected with a first power device mounted on one side of the top of the rack, a displacement space is arranged in the frame type platform, a linkage frame plate is sleeved in the displacement space, second limiting shafts are clamped in the displacement space and are fixedly sleeved on both sides of the linkage frame plate, and second nuts are sleeved on the second limiting shafts.

[0007] Preferably, the first power device is composed of a first clutch servo motor and a first speed reducer, the output end of the first servo motor is drivingly connected with the input end of the first speed reducer, the output end of the first speed reducer is drivingly connected with the corresponding end of the first lead screw, a first bearing is nested at the sleeving position of the first lead screw and the front end structure of the top of the rack, a first support is mounted between the surface of the shell of the first servo motor and the top structure of the rack, the second power device is composed of a second clutch servo motor and a second speed reducer, the output end of the second servo motor is drivingly connected with the input end of the second speed reducer, the output end of the second speed reducer is drivingly connected with the corresponding end of the second lead screw, a second bearing is nested at the sleeving position of the second lead screw and the frame type platform, and a second support is mounted between the surface of the shell of the second servo motor and the surface of the frame type platform.

[0008] Preferably, positioning holes are formed in both sides of the top of the welding platform, first constraint shafts are clamped in the positioning holes and are fixed on the bottom side edges of the glass cover plate, and the glass cover plate is made of quartz glass.

[0009] Preferably, the top surface of the welding platform is divided into a plurality of clamping stations, a complex pressing device is sleeved in the top of the welding platform and is arranged at the bottom of the clamping station, the output structure of the complex pressing device can penetrate the top structure of the welding platform and can cooperate with the glass cover plate to relatively clamp and position the workpiece prevented on the clamping station.

[0010] Preferably, a through hole corresponding to the clamping station is formed in the top structure of the welding platform, the pressing device comprises a second servo electric push rod and a pressing support plate, a support seat is installed between the shell surface of the second servo electric push rod and the inner wall of the top of the welding platform, the output end of the second servo electric push rod is in transmission connection with the middle part of the pressing support plate, and the top corners of the side edges of the pressing support plate are fixed with pressing rods, which can penetrate through the corresponding through hole and extend to the outside of the top of the welding platform under the transmission of the output end of the second servo electric push rod through the pressing support plate.

[0011] Preferably, the pressing rod comprises a supporting ring, a second constraint shaft, a T-shaped rod, a first spring and a pressure sensor, one end of the supporting ring is fixed on the corner structure at the top of the pressing support plate, a limiting hole in the form of a through hole is formed in the outer ring structure of the supporting ring, the second constraint shaft fixed with one end of the T-shaped rod is clamped in the limiting hole, the pressure sensor is sleeved on the inner side of the other end of the supporting ring and is in movable connection with the other end surface of the T-shaped rod, and the first spring is sleeved on the outer side of the T-shaped rod, and the two ends of the first spring are fixed on the surface of one end of the T-shaped rod and the surface of the other end of the supporting ring respectively.

[0012] Preferably, the welding platform is slidingly installed on the top of the base, and the slide rails fixed on the top of the base are clamped on the two sides of the bottom of the welding platform, the baffles fixed on the top of the base are connected to the two ends of the slide rails, and the magnetic attraction surfaces of the electromagnets installed on the two sides of the rear end of the top of the base can be magnetically connected with the side surface of the bottom of the welding platform.

[0013] Preferably, the conical holes are formed in the inner walls of the two sides of the front end of the bottom of the welding platform, the linkage limiting assembly is arranged on the top of the base, the linkage limiting assembly comprises a support frame, the support frame is fixed on the top of the base, the electric push rods are sleeved on the two sides of the support frame, and the output ends of the electric push rods are in transmission connection with the conical rods which can be clamped and positioned in the conical holes.

[0014] Preferably, the buffer space is arranged in the middle part of the support frame, the reinforcing rod is fixedly sleeved in the buffer space, the damping rings are clamped on the two ends of the reinforcing rod, and the second spring is movably sleeved with the reinforcing rod and installed between the two damping rings.

[0015] The present application has the following advantages:

[0016] 1. After the cooperation of the laser welding device with the XY transmission platform, the clamping mechanism formed by the glass cover plate and two first servo electric push rods, the laser welding device can preheat the workpiece to be welded under the transmission of the XY transmission platform, thereby reducing the heating rate of the plate during formal welding, reducing thermal strain and improving the influence of local high-speed heating of the laser on the deformation of the plate, and the clamping mechanism cooperates with the welding platform to press and limit the workpiece to be processed, thereby improving the deformation problem of the workpiece during welding.

[0017] 2. The clamping mechanism is provided with a quartz glass inside the glass cover plate, which can satisfy the shielding of the laser welding device during laser welding and clamping and limiting the workpiece to be processed, and the glass cover plate of the quartz glass has the structural advantages of high transmittance and low thermal expansion coefficient, thereby avoiding the laser loss caused by the traditional metal pressing plate.

[0018] 3. The double-sided clamping and limiting of the workpiece to be processed is realized on the basis of the clamping mechanism by the auxiliary structure of the double-pressing device, thereby further reducing the deformation probability of the workpiece during welding, and at the same time, the double-sided clamping and limiting solves the problem of loosening of the overall clamping of multiple thickness errors within a reasonable range, thereby further improving the processing adaptability of the overall device. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the structure of the present application;

[0020] Figure 2 is a top view of the structure of the present application;

[0021] Figure 3 is a front view of the structure of the present application;

[0022] Figure 4 is a perspective view of the welding platform of the structure of the present application;

[0023] Figure 5 is a top view of the welding platform of the structure of the present application;

[0024] Figure 6 is a front view of the double-pressing device of the structure of the present application;

[0025] Figure 7 is an enlarged view of the double-pressing device of the structure of the present application;

[0026] Figure 8 is an enlarged view of the structure of the present application Figure 7 at A.

[0027] In the figure: 1, base; 2, laser welding device; 3, rack; 4, frame platform; 5, first limiting shaft; 6, first lead screw; 7, first power device; 8, linkage frame plate; 9, second lead screw; 10, second limiting shaft; 11, second power device; 12, welding platform; 13, glass cover plate; 14, first servo electric push rod; 15, first constraint shaft; 16, pressure recovery device; 161, second servo electric push rod; 162, pressure recovery support plate; 163, support ring cylinder; 164, second constraint shaft; 165, T-shaped rod; 166, first spring; 167, pressure sensor; 17, electromagnet; 18, slide rail; 19, baffle; 20, linkage limiting assembly; 201, support frame; 202, electric push rod; 203, conical rod; 204, reinforcing rod; 205, second spring; 206, damping ring; 21, workpiece. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be described clearly and completely below in combination with the preferred embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] As Figures 1-5 A glass pressure plate preheating laser welding all-in-one machine, comprising a base 1 and a laser welding device 2, the top of the base 1 is provided with an XY transmission platform and a welding platform 12 which are transmissionally connected with the laser welding device 2, and the laser welding device 2 can automatically displace left or right or forward and backward outside the top of the welding platform 12 under the transmission of the XY transmission platform, the top of the welding platform 12 is covered with a glass cover plate 13, and both sides of the glass cover plate 13 are transmissionally connected with first servo electric push rods 14 which are sleeved inside the welding platform 12, and the glass cover plate 13 can clamp the top of the welding platform 12 under the transmission of the first servo electric push rods 14;

[0030] The laser welding device 2 comprises a laser generator, an optical system, a power module and a cooling device, the XY transmission platform comprises a rack 3 and a frame type platform 4, a first limiting shaft 5 is clamped in the rear end of the frame type platform 4 and is sleeved on the top rear end of the rack 3, a first nut is sleeved in the front end of the frame type platform 4, a first lead screw 6 is threadedly connected in the first nut and is sleeved in the top front end of the rack 3, one end of the first lead screw 6 is drivingly connected with a first power device 7 installed on one side of the top of the rack 3, a displacement space is arranged in the frame type platform 4, a linkage frame plate 8 is sleeved in the displacement space, second limiting shafts 10 are clamped in the displacement space on the two sides of the linkage frame plate 8, second nuts are sleeved, second lead screws 9 are threadedly connected in the second nuts and are sleeved in the displacement space, and one end of the second lead screw 9 is drivingly connected with a second power device 11. The XY transmission platform can meet the reciprocating automatic displacement of the laser welding device 2 on the horizontal plane through the two sets of lead screw transmission systems, so that the laser welding device 2 can preheat the workpiece 21 to be processed on the top of the welding platform 12 in a low-power operation mode, thereby reducing the heating speed of the workpiece 21 and the deformation probability of the workpiece 21 after welding during the subsequent laser welding process of the laser welding device 2.

[0031] The first power device 7 is composed of a first brake servo motor and a first speed reducer, the output end of the first servo motor is drivingly connected with the input end of the first speed reducer, the output end of the first speed reducer is drivingly connected with the corresponding end of the first lead screw 6, the first lead screw 6 is nested with a first bearing at the sleeving position with the top front end structure of the rack 3, and a first support is installed between the surface of the shell of the first servo motor and the top structure of the rack 3. The second power device 11 is composed of a second brake servo motor and a second speed reducer, the output end of the second servo motor is drivingly connected with the input end of the second speed reducer, the output end of the second speed reducer is drivingly connected with the corresponding end of the second lead screw 9, the second lead screw 9 is nested with a second bearing at the sleeving position with the frame type platform 4, and a second support is installed between the surface of the shell of the second servo motor and the surface of the frame type platform 4. The first power device 7 and the second power device 11 serve as power conditions and can meet the transmission requirements of the corresponding associated structures, at the same time, the first power device 7 and the second power device 11 can also create favorable conditions for improving the subsequent welding quality of the laser welding device 2 during the process with high transmission precision.

[0032] The positioning holes are arranged in the two sides of the top of the welding platform 12, and the first constraint shafts 15 fixed on the bottom side edges of the glass cover plate 13 are clamped in the positioning holes. Thus, the clamping cooperation of the first constraint shafts 15 and the positioning holes enables the continuous, stable and reliable movement of the glass cover plate 13 under the transmission of the first servo electric push rods 14. The glass cover plate 13 is made of quartz glass, which has the structural advantages of high transmittance and low thermal expansion coefficient, thereby satisfying the shielding of the laser welding of the laser welding device 2 and achieving the clamping and limiting effect on the workpieces 21 to be processed.

[0033] In use, the plurality of workpieces 21 to be processed are arranged in sequence according to the welding path on the top surface of the welding platform 12. After completion, the two first servo electric push rods 14 in the original starting state are simultaneously closed. The output ends of the two first servo electric push rods 14 synchronously drive the glass cover plate 13 to move downward until the bottom of the glass cover plate 13 contacts the top of the workpieces 21 and holds them to a certain extent. The synchronous transmission of the two first servo electric push rods 14 can adopt the closed-loop electronic control system or PLC synchronous control program disclosed in the prior art.

[0034] After the glass cover plate 13 clamps and limits the plurality of workpieces 21 on the top of the welding platform 12 under the transmission of the two first servo electric push rods 14, the first power device 7 inside is started according to the welding path of the first processing cycle, such as the left and right movement direction. The first brake servo motor synchronously drives the first screw rod 6 through the first speed reducer, and then the first screw rod 6 rotates to engage and drive the corresponding first nut, and then the frame platform 4 drives the laser welding device 2 to synchronously displace under the engagement transmission of the first screw rod 6 and the clamping and limiting effect of the first limiting shaft 5. At the same time, the laser welding device 2 is turned on and operates at low power to heat. Then, the laser welding device 2 is used to preheat the workpieces 21 on the welding path of the first processing cycle, thereby reducing the temperature change speed of the subsequent workpieces 21 in the welding process, and then reducing the deformation probability of the workpieces 21 after subsequent welding. Similarly, if the welding path of the first processing cycle is in the front and back direction, the second brake servo motor inside the second screw rod 9 is started. The second brake servo motor synchronously drives the second screw rod 9 through the second speed reducer, and then the laser welding device 2 synchronously displaces under the engagement transmission of the linkage frame plate 8 and the second screw rod 9 and the clamping and guiding of the linkage frame plate 8 and the second limiting shaft 10. At the same time, the laser welding device 2 is turned on and operates at low power to heat. Then, the laser welding device 2 is used to preheat the workpieces 21 on the welding path of the first processing cycle, thereby reducing the temperature change speed of the subsequent workpieces 21 in the welding process, and then reducing the deformation probability of the workpieces 21 after subsequent welding.

[0035] And after the preheating is completed, the laser welding device 2 is adjusted to the original position, and after completion, the laser welding device 2 in the high-power welding state is still driven by the XY transmission platform to automatically displace along the welding path of the first machining cycle, and then the automatic laser welding operation effect is realized, and the subsequent other welding paths are operated according to the above steps.

[0036] As Figures 1-8 The top surface of the welding platform 12 is divided into several clamping stations, and the bottom of the clamping station is provided with a complex compression device 16 sleeved in the top of the welding platform 12. The output structure of the complex compression device 16 can penetrate the top structure of the welding platform 12 and cooperate with the glass cover plate 13 to clamp and position the workpiece 21 prevented on the clamping station, thereby fully clamping and limiting the workpiece 21 during welding. The probability of deformation of the workpiece 21 during the welding process is further reduced;

[0037] The top structure of the welding platform 12 is provided with a through hole corresponding to the clamping station, and the complex compression device 16 comprises a second servo electric push rod 161 and a complex compression support plate 162. A support seat is installed between the shell surface of the second servo electric push rod 161 and the top inner wall of the welding platform 12. The output end of the second servo electric push rod 161 is in transmission connection with the middle part of the complex compression support plate 162. The complex compression rod is fixed on the top of the side angle on both sides of the complex compression support plate 162, and the complex compression rod can penetrate the corresponding through hole and extend to the top of the welding platform 12 outside through the transmission of the output end of the second servo electric push rod 161 through the complex compression support plate 162.

[0038] In use, considering that the size error of the reasonable range of the thickness of the workpiece 21 in reality is easy to cause the overall compression of the glass cover plate 13 to cause part of the workpiece 21 to be loose or not compressed in place, the second servo electric push rod 161 in the original open state can be closed during the welding process of the laser welding device 2. The output end of the second servo electric push rod 161 drives multiple complex compression rod members to penetrate the respective corresponding through holes to drive the corresponding workpiece 21 from below, and then cooperates with the glass cover plate 13 to clamp the workpiece 21 from both sides, so as to ensure the stability of the workpiece 21 during the subsequent welding process and improve the welding quality.

[0039] As Figures 1-8The complex compression rod piece comprises a supporting ring cylinder 163, a second constraint shaft 164, a T-shaped rod 165, a first spring 166 and a pressure sensor 167. One end of the supporting ring cylinder 163 is fixed on the corner structure at the top of the complex compression support plate 162, and a limiting hole is formed in the outer ring structure of the supporting ring cylinder 163. The second constraint shaft 164 is fixed at one end of the T-shaped rod 165 and is clamped in the limiting hole. The pressure sensor 167 is sleeved on the inner side of the other end of the supporting ring cylinder 163 and is movably connected with the other end surface of the T-shaped rod 165. The first spring 166 is sleeved on the outer side of the T-shaped rod 165, and the two ends of the first spring 166 are fixed on the surface of one end of the T-shaped rod 165 and the surface of the other end of the supporting ring cylinder 163 respectively.

[0040] In use, the complex compression rod piece is specifically provided as four. Considering that the structure of part of the workpieces 21 is deformed before being machined and the deformation amount exceeds the maximum range, before being specifically machined, two first servo electric push rods 14 originally in the starting state are simultaneously closed, the glass cover plate 13 is synchronously driven downward by the output ends of the two first servo electric push rods 14, until the bottom of the glass cover plate 13 is close to the top of the workpiece 21 but does not contact, then the corresponding second servo electric push rod 161 is started, the output end of the second servo electric push rod 161 drives the plurality of complex compression rod pieces to penetrate through the corresponding through holes to drive the corresponding workpiece 21 from below to above, at the same time, the T-shaped rod 165 contacts the corresponding corner structure of the workpiece 21 and reversely presses the pressure sensor 167, so that the pressure sensor 167 outputs pressure data to the corresponding existing background equipment, and if the deformation amount of the structure of the workpiece 21 exceeds the preset range, the difference between the maximum value and the minimum value of the four pressure data will exceed the preset range, thereby indicating that the structure of the workpiece 21 is poor and needs to be replaced or reworked, thereby reducing the processing failure rate of the overall plate after subsequent welding.

[0041] As Figures 1-6 The welding platform 12 is slidably installed on the top of the base 1, and the sliding rails 18 fixed on the top of the base 1 are clamped on both sides of the bottom of the welding platform 12. The sliding rails 18 are connected with the baffles 19 fixed on the top of the base 1 at both ends. The electromagnets 17 are installed on both sides of the rear end of the top of the base 1. The magnetic attraction surface of the electromagnet 17 can be magnetically connected with the corresponding side surface of the bottom of the welding platform 12.

[0042] The bottom of the welding platform 12 is provided with a tapered hole in the side wall of the front end, the top of the base 1 is provided with a linkage limiting assembly 20, the linkage limiting assembly 20 comprises a support frame 201, and the top of the support frame 201 is fixed to the top of the base 1, the two sides of the support frame 201 are both provided with an electric push rod 202, the output end of the electric push rod 202 is transmissionally connected with a tapered rod 203 capable of being clamped and positioned with the tapered hole, the middle of the support frame 201 is provided with a buffer space, the buffer space is fixedly sleeved with a reinforcing rod 204, the two ends of the reinforcing rod 204 are both clamped with a damping ring 206, and the second spring 205 is movably sleeved with the reinforcing rod 204 between the two damping rings 206.

[0043] In use, considering the placement of the plurality of workpieces 21 on the top of the welding platform 12 before welding and the taking and placing of the workpieces 21 after welding, the welding platform 12 is slidably installed on the top of the base 1 by using the slide rail 18, and subsequently, in order to ensure the stability of the welding platform 12 during use, the electromagnet 17 can magnetically attract and limit the welding platform 12, and the linkage limiting assembly 20 can be mechanically clamped and limited with the corresponding tapered hole, and the vibration suffered by the welding platform 12 during use can be damped and buffered by the second spring 205 and the two damping rings 206, thereby ensuring the stability of the welding platform 12 during the welding process.

[0044] When the welding process is completed, the electromagnet 17 and the electric push rod 202 can be turned off, and then the magnetic attraction and limitation of the welding platform 12 by the electromagnet 17 and the disengagement of the tapered rod 203 from the corresponding tapered hole are released, and then the welding platform 12 is pulled to the top of the front end of the base 1, and the maximum space can be obtained, and then the two first servo electric push rods 14 are started, the glass cover plate 13 is driven away from the workpieces 21 after welding by the first servo electric push rod 14, and sufficient space is provided for the convenient taking of the workpieces 21 by the subsequent operator, thereby meeting the use requirement of convenient taking and placing.

[0045] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A glass pressing plate preheating and laser welding all-in-one machine, comprising a base (1) and a laser welding device (2), characterized in that: The top of the base (1) is provided with an XY transmission platform drivingly connected to a laser welding device (2), a welding platform (12), and the laser welding device (2) can automatically displace left and right or forward and backward outside the top of the welding platform (12) under the transmission of the XY transmission platform, the top of the welding platform (12) is covered with a glass cover plate (13), and the two sides of the glass cover plate (13) are drivingly connected with first servo electric push rods (14) sleeved in the welding platform (12), and the glass cover plate (13) can clamp the top of the welding platform (12) under the transmission of the first servo electric push rods (14).

2. The glass pressing plate preheating and laser welding integrated machine according to claim 1, characterized in that: The laser welding device (2) comprises a laser generator, an optical system, a power module and a cooling device, the XY transmission platform comprises a rack (3) and a frame platform (4), the rear end of the frame platform (4) is clamped with a first limiting shaft (5) sleeved in the rear end of the top of the rack (3), the front end of the frame platform (4) is sleeved with a first nut, the first nut is threadedly connected with a first lead screw (6) sleeved in the front end of the top of the rack (3), and one end of the first lead screw (6) is drivingly connected with a first power device (7) mounted on one side of the top of the rack (3), the inside of the frame platform (4) is provided with a space for giving way, and the space for giving way is sleeved with a linkage frame plate (8), the two sides of the linkage frame plate (8) are respectively clamped with a second limiting shaft (10) sleeved in the space for giving way and a second nut, the second nut is threadedly connected with a second lead screw (9) sleeved in the space for giving way, and one end of the second lead screw (9) is drivingly connected with a second power device (11).

3. The glass pressing plate preheating and laser welding integrated machine according to claim 2, characterized in that: The first power device (7) is composed of a first brake servo motor and a first speed reducer, the output end of the first servo motor is drivingly connected with the input end of the first speed reducer, the output end of the first speed reducer is drivingly connected with the corresponding end of the first lead screw (6), the first lead screw (6) is nested with a first bearing at the sleeving position with the front end structure of the top of the rack (3), and a first support is mounted between the surface of the shell of the first servo motor and the top structure of the rack (3), the second power device (11) is composed of a second brake servo motor and a second speed reducer, the output end of the second servo motor is drivingly connected with the input end of the second speed reducer, the output end of the second speed reducer is drivingly connected with the corresponding end of the second lead screw (9), the second lead screw (9) is nested with a second bearing at the sleeving position with the frame platform (4), and a second support is mounted between the surface of the shell of the second servo motor and the surface of the frame platform (4).

4. The glass pressing plate preheating and laser welding integrated machine of claim 1, wherein: The two sides of the top of the welding platform (12) are provided with positioning holes, and the positioning holes are clamped with first constraint shafts (15) fixed on the bottom side of the glass cover plate (13), and the glass cover plate (13) is made of quartz glass.

5. The glass pressing plate preheating and laser welding integrated machine according to claim 1, characterized in that: The top surface of the welding platform (12) is divided into several clamping stations, and the bottom of the clamping station is provided with a complex pressing device (16) sleeved in the top of the welding platform (12). The output structure of the complex pressing device (16) can penetrate through the top structure of the welding platform (12) and cooperate with the glass cover plate (13) to relatively clamp and position the workpiece (21) prevented on the clamping station.

6. The glass press plate preheating and laser welding integrated machine according to claim 5, characterized in that: The top structure of the welding platform (12) is provided with a through hole corresponding to the clamping station, the complex pressing device (16) comprises a second servo electric push rod (161) and a complex pressing support plate (162), a support seat is installed between the shell surface of the second servo electric push rod (161) and the inner wall of the top of the welding platform (12), the output end of the second servo electric push rod (161) is in transmission connection with the middle part of the complex pressing support plate (162), and the top corners of the two sides of the complex pressing support plate (162) are fixed with complex pressing rod members, and the complex pressing rod members can penetrate through the corresponding through hole and extend to the top outside of the welding platform (12) under the transmission of the output end of the second servo electric push rod (161) through the complex pressing support plate (162).

7. The glass press plate preheating and laser welding integrated machine according to claim 6, characterized in that: The complex pressing rod member comprises a supporting ring cylinder (163), a second constraint shaft (164), a T-shaped rod (165), a first spring (166) and a pressure sensor (167), one end of the supporting ring cylinder (163) is fixed on the corner structure at the top of the complex pressing support plate (162), a through limiting hole is formed in the outer ring structure of the supporting ring cylinder (163), the second constraint shaft (164) is connected with one end of the T-shaped rod (165) and is connected in the limiting hole, the pressure sensor (167) is sleeved on the inner side of the other end of the supporting ring cylinder (163) and is in movable connection with the other end surface of the T-shaped rod (165), and the first spring (166) is sleeved on the outer side of the T-shaped rod (165) and is fixed on the surface of one end of the T-shaped rod (165) and the surface of the other end of the supporting ring cylinder (163).

8. The glass press plate preheating and laser welding integrated machine of claim 1, wherein: The welding platform (12) is slidably installed on the top of the base (1), and the two sides of the bottom of the welding platform (12) are connected with the slide rails (18) fixed on the top of the base (1), the two ends of the slide rails (18) are connected with the baffles (19) fixed on the top of the base (1), the two sides of the rear end of the top of the base (1) are provided with the electromagnets (17), and the magnetic attraction surface of the electromagnets (17) can be magnetically connected with the corresponding side surface of the bottom of the welding platform (12).

9. The glass press plate preheating and laser welding integrated machine according to claim 8, characterized in that: The two sides of the bottom of the welding platform (12) are provided with taper holes, the top of the base (1) is provided with a linkage limiting assembly (20), the linkage limiting assembly (20) comprises a support frame (201), and the top of the support frame (201) is fixed on the top of the base (1), the two sides of the support frame (201) are sleeved with the electric push rods (202), and the output end of the electric push rod (202) is in transmission connection with the taper rod (203) which can be connected and positioned with the taper hole.

10. The glass press plate preheating and laser welding integrated machine of claim 9, wherein: The middle part of the support frame (201) is provided with a buffer space, a reinforcing rod (204) is fixedly sleeved in the buffer space, the two ends of the reinforcing rod (204) are both clamped with a damping ring (206), and a second spring (205) movably sleeved with the reinforcing rod (204) is arranged between the two damping rings (206).

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