Pneumatic pressure applying arc-shaped glass plate bending equipment and method for building construction

Abstract

The invention discloses a pneumatic pressing arc-shaped glass plate bending device and method for building construction in the technical field of glass plate machining equipment.The pneumatic pressing arc-shaped glass plate bending device comprises a working platform, a rack and a driving mechanism, and an air pressure bending assembly is installed on the right side wall of the top of the working platform; an output shaft at the bottom of the driving mechanism extends into an inner cavity of the rack and is connected with the top wall of the air pressure bending assembly, a closed space is formed by a movable plate, a front baffle and a sealing plate of the air pressure bending assembly in the device, air is supplied by air supply equipment, the sealing plate moves downwards, and the air pressure above the closed space is increased; the pressure is applied to the glass plate above the arc-shaped block, so that the glass plate can be pressed at intervals without being in contact with the glass plate, the glass plate is bent firstly, the transverse length of the glass plate is reduced before the glass plate is in contact with and bent, the probability that indentations are generated on the surface of the glass plate in the bending process is reduced, and the machining quality of the glass plate is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of glass plate processing equipment, and in particular to a device and method for bending a curved glass plate by pneumatic pressure for building construction. Background Art

[0002] Curved glass plates are often used as decorative materials in building construction. In the process of producing curved glass plates, an extrusion block is generally used to apply pressure to the heated glass plate to bend the glass plate. In order to ensure that the glass plate forms a specified shape, matching protrusions and grooves are generally used to squeeze the glass plate into the groove. However, the lateral length of the glass plate before bending is greater than the length after bending. During the extrusion process, some areas of the glass plate are outside the groove and will contact and fit with the area outside the groove. In the process of the glass plate being squeezed into the groove, when the glass plate extends into the groove, the glass plate will contact with the edge area of ​​the groove. Because the glass plate is heated, the glass plate has a certain flexibility, which affects the extension of the glass plate outside the groove into the inside of the groove, causing the glass plate to stretch, resulting in errors in the shape of the glass plate processing, and easily causing inconsistent thickness of the glass plate processing, and also causing indentations on the surface of the glass plate, which affects the quality of the glass plate processing. For this reason, we propose a curved glass plate bending device and method with pneumatic pressure for building construction. Summary of the invention

[0003] The object of the present invention is to provide a device and method for bending curved glass plates with pneumatic pressure for building construction, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A pneumatically pressurized curved glass plate bending device for construction, comprising a working platform, a frame and a driving mechanism, wherein the frame is installed on the top left wall of the working platform, the driving mechanism is installed on the top wall of the frame, a pneumatic bending assembly is installed on the top right wall of the working platform, the bottom output shaft of the driving mechanism extends into the inner cavity of the frame and is connected to the top wall of the pneumatic bending assembly, an arc block is installed on the top wall of the working platform, and the arc block is located in the inner cavity of the pneumatic bending assembly.

[0005] Preferably, the pneumatic bending assembly includes two groups of front baffles installed on the right side wall of the top of the working platform, two groups of movable plates are installed on the top wall of the working platform, and the front and rear side walls of the two groups of movable plates are respectively fitted with the outer walls of one side of the two groups of front baffles close to each other, and a sealing plate is provided between the top walls of the front baffles, and the top wall of the sealing plate is connected to the bottom output shaft of the driving mechanism, and an air supply device is installed on the front side wall of the front baffle.

[0006] Preferably, the top wall of the working platform is provided with two groups of guide grooves, the bottom wall of the movable plate is installed with a guide block, and the guide block is slidably inserted in the inner cavity of the guide groove, and a connecting spring is installed between the guide block and the inner cavity of the guide groove, the outer walls of the two groups of movable plates close to each other are provided with sliding grooves, and a baffle plate is slidably inserted in the inner cavity of the sliding groove, and a tension spring is installed between the bottom wall of the baffle plate and the bottom of the inner cavity of the sliding groove.

[0007] Preferably, the shielding plate includes a mounting block which is slidably inserted into the inner cavity of the sliding groove, a swing block is hingedly connected to the outer wall of the mounting block on one side close to the arc block, a sealing gasket is installed on the bottom wall of the swing block, an air storage groove is provided in the inner cavity of the sealing gasket, and air inlet holes are evenly provided on the top wall of the swing block, and the air inlet holes are connected to the inner cavity of the air storage groove.

[0008] Preferably, the sealing plate comprises a plate body connected to the bottom output shaft of the driving mechanism, the bottom wall of the plate body is provided with a groove matching the arc block, the top wall of the plate body is provided with two groups of grooves, and the inner cavity of the groove is slidably connected to the movable baffle through an elastic member.

[0009] Preferably, a placement groove is provided on the front side wall of the front baffle at the rear side, and a lower conductive sheet is installed in the inner cavity of the placement groove, a movable groove is provided on the outer wall of the rear side of the plate body, an upper conductive sheet is slidably installed in the inner cavity of the movable groove, an electromagnet is installed in the inner cavity of the guide groove, the electromagnet is electrically connected to the lower conductive sheet, the electromagnet is located on the outer side of the guide block, and a magnetic block is installed on the outer wall of the guide block on one side close to the electromagnet.

[0010] Preferably, a slider is installed on the bottom wall of the front baffle, a sliding groove is provided at the connection portion between the working platform and the front baffle, and the slider is slidably inserted into the inner cavity of the sliding groove through an elastic element, a driving motor is installed on the top wall of the working platform, and a connecting rope is installed on the outer wall of the slider, and the end of the connecting rope away from the slider is in contact with the outer wall of the left output shaft of the driving motor.

[0011] Preferably, a movable groove is opened on the front side wall of the rear front baffle, a sealing gate is slidably inserted into the front side of the inner cavity of the movable groove, and a return spring is connected to the bottom of the sealing gate, and the bottom of the return spring is connected to the bottom of the inner cavity of the movable groove.

[0012] A method for bending a glass plate by pneumatic pressure for building construction comprises the following steps:

[0013] S1: Put the heated glass plate onto the arc block so that the glass block is between the front baffle plate and the movable plate, start the driving mechanism, drive the sealing plate to move down to the top of the two sets of front baffle plates and the movable plate, and the elastic member in the groove presses the movable baffle plate outward, so that the movable baffle plate contacts the inner wall of the front baffle plate and the movable plate, forming a closed space;

[0014] S2: The air supply equipment injects air into the space, increasing the air pressure above the inner cavity of the space. The shielding plate will also move downward under the action of the air pressure, and the air will enter the inner cavity of the air storage tank through the air inlet hole. As the air pressure increases, the sealing gasket will gradually expand, so that the sealing gasket and the top wall of the processed glass plate will fit more closely, ensuring that the glass plate is processed by air. As the glass plate is gradually bent, the swing block will rotate at the mounting block, so that the sealing gasket can fully fit the glass plate;

[0015] S3: The driving structure is started again, so that the sealing plate continues to move downward. When the sealing plate moves downward, it contacts the sealing gate, driving the sealing gate to move downward in the moving groove, and the sealed space formed by the front baffle plate and the movable plate is deflated.

[0016] S4: As the sealing plate continues to move downward, the upper conductive sheet and the lower conductive sheet will fit together, so that the electromagnet will be energized and work, and will be attracted to the magnetic block, so that the two groups of movable plates will move away from each other, and the driving motor will work to pull the connecting rope to move the two groups of front baffles away from each other, and the sealing space between the front baffle, the movable plate and the sealing plate will be removed, so that the sealing plate will continue to move downward, and the groove of the plate body will be pressed against the outside of the glass plate, and the glass plate will be squeezed again to ensure the quality of the bending of the glass plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: a closed space is formed by the movable plate, the front baffle and the sealing plate of the air pressure bending assembly in the device, air is supplied by the air supply equipment, and the sealing plate moves downward, so that the air pressure above the closed space increases, and pressure is applied to the glass plate above the arc block, so that the glass plate can be pressured at intervals without contacting the glass plate, and the glass plate is bent first, so that the lateral length of the glass plate is reduced before the glass plate is contacted and bent, and the probability of indentations on the surface of the glass plate during the bending process is reduced, thereby ensuring the quality of glass plate processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the pneumatic bending assembly connection of the present invention;

[0020] Figure 3 It is a schematic diagram of the top view of the connection structure between the front baffle and the movable plate of the present invention;

[0021] Figure 4 This is an enlarged schematic diagram of the structure at A of the present invention;

[0022] Figure 5 It is a schematic diagram of the sealing plate structure of the present invention.

[0023] In the figure: 1. working platform; 2. frame; 3. driving mechanism; 4. pneumatic bending assembly; 41. front baffle; 42. movable plate; 43. sealing plate; 431. plate body; 432. movable baffle; 433. slot; 434. movable slot; 435. upper conductive sheet; 44. guide slot; 45. electromagnet; 46. shielding plate; 461. mounting block; 462. swing block; 463. sealing gasket; 464. air storage tank; 465. air inlet; 47. tension spring; 48. lower conductive sheet; 49. sealing gate; 410. movable slot; 411. driving motor; 412. slide slot; 5. arc block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1:

[0026] The present invention provides a technical solution: a pneumatic pressure curved glass plate bending device for construction, please refer to Figure 1 , comprising a working platform 1, a frame 2 and a driving mechanism 3;

[0027] See also Figure 1 , the frame 2 is mounted on the top left wall of the working platform 1, and the driving mechanism 3 is mounted on the top wall of the frame 2;

[0028] See also Figure 1 and Figure 2 A pneumatic bending assembly 4 is installed on the right side wall at the top of the working platform 1, the bottom output shaft of the driving mechanism 3 extends into the inner cavity of the frame 2 and is connected to the top wall of the pneumatic bending assembly 4, an arc block 5 is installed on the top wall of the working platform 1, and the arc block 5 is located in the inner cavity of the pneumatic bending assembly 4;

[0029] See also Figure 1 and Figure 2 The pneumatic bending assembly 4 includes two groups of front baffles 41 installed on the right side wall of the top of the working platform 1, and two groups of movable plates 42 are installed on the top wall of the working platform 1, and the front and rear side walls of the two groups of movable plates 42 are respectively in contact with the outer walls of one side of the two groups of front baffles 41 that are close to each other. A sealing plate 43 is provided between the top walls of the front baffles 41, and the top wall of the sealing plate 43 is connected to the bottom output shaft of the driving mechanism 3. The front side wall of the front baffle 41 is installed with an air supply device, and the electrical equipment involved in the device is electrically connected to the external power switch through wires;

[0030] See also Figure 2 and Figure 3 The top wall of the working platform 1 is provided with two groups of guide grooves 44, and the bottom wall of the movable plate 42 is provided with a guide block, and the guide block is slidably inserted in the inner cavity of the guide groove 44, so that the two groups of guide blocks can slide in the guide groove 44, and a connecting spring is installed between the guide block and the inner cavity of the guide groove 44, which plays a role of stretching and resetting. The outer walls of the two groups of movable plates 42 on the side close to each other are provided with sliding grooves, and a shielding plate 46 is slidably inserted in the inner cavity of the sliding groove, and a tension spring 47 is installed between the bottom wall of the shielding plate 46 and the bottom of the inner cavity of the sliding groove;

[0031] See also Figure 2 and Figure 4 The shielding plate 46 includes a mounting block 461 which is slidably inserted into the inner cavity of the sliding groove. The outer wall of the mounting block 461 near the arc block 5 is hinged with a swing block 462. A sealing gasket 463 is installed on the bottom wall of the swing block 462. The sealing gasket 463 is made of rubber, and the bottom of the sealing gasket 463 is connected to a metal pressing sheet through an insulating plate for contacting the glass plate. An air storage tank 464 is opened in the inner cavity of the sealing gasket 463. Air inlet holes 465 are evenly opened on the top wall of the swing block 462, and the air inlet holes 465 are connected to the inner cavity of the air storage tank 464. The cavities are connected, and when air is injected into the upper part between the two groups of front baffles 41 and the two groups of movable plates 42, the air will enter the inner cavity of the air storage tank 464 through the air inlet hole 465, and as the air pressure increases, the sealing gasket 463 will gradually expand, so that the sealing gasket 463 and the top wall of the processed glass plate are more closely attached, thereby increasing the sealing effect of the shielding plate 46, ensuring that the glass plate is processed by air, and as the glass plate is gradually bent, the swing block 462 will rotate at the mounting block 461, so that the sealing gasket 463 can fully fit with the glass plate;

[0032] See also Figure 1 and Figure 5 The sealing plate 43 includes a plate body 431 connected to the bottom output shaft of the driving mechanism 3, a groove matching the arc block 5 is formed on the bottom wall of the plate body 431, and two sets of slots 433 are formed on the top wall of the plate body 431. The inner cavity of the slot 433 is slidably connected with the movable baffle 432 through an elastic member. The heated glass plate is placed above the arc block 5 so that the glass block is between the front baffle 41 and the movable plate 42, and the bottom wall of the shielding plate 46 is in contact with the top wall of the glass plate. The driving mechanism 3 moves the sealing plate 43 downward into the front baffle 41 and the movable plate 42. A closed space is formed between the baffle plate 41 and the movable plate 42, and then air is injected into the space by the air supply equipment to increase the air pressure above the inner cavity of the space, and the glass plate is first pressurized to bend the glass plate above the arc block 5. During the bending process of the glass plate, the shielding plate 46 will also move downward to maintain a closed environment above the glass plate and between the movable plate 42, the front baffle plate 41, and the sealing plate 43, ensuring that the air can bend the glass plate, and the sealing plate 43 will also move downward during the pressure application process.

[0033] Embodiment 2:

[0034] See also Figure 2 , Figure 3 and Figure 5 On the basis of Example 1, a placement groove is provided on the front side wall of the rear front baffle plate 41, and a lower conductive sheet 48 is installed in the inner cavity of the placement groove. A movable groove 434 is provided on the outer wall of the rear side of the plate body 431, and an upper conductive sheet 435 is slidably installed in the inner cavity of the movable groove 434. An electromagnet 45 is installed in the inner cavity of the guide groove 44. The electromagnet 45 is electrically connected to the lower conductive sheet 48. The electromagnet 45 is located on the outer side of the guide block, and a magnetic block is installed on the outer wall of the guide block close to the electromagnet 45. When the sealing plate 43 moves downward, the upper conductive sheet 435 is fitted with the lower conductive sheet 48, so that the electromagnet 45 is energized to work and adsorbed with the magnetic block, so that the two sets of movable plates 42 are moved away from each other, and the motor is driven 411 works, pulls the connecting rope, moves the two groups of front baffles 41 away from each other, removes the sealed space between the front baffle 41, the movable plate 42 and the sealing plate 43, moves the sealing plate 43 further downward, presses the groove of the plate body 431 to the outside of the glass plate, squeezes the glass plate again, and ensures the bending quality of the glass plate. A slider is installed on the bottom wall of the front baffle 41, a slide groove 412 is provided at the connection part between the working platform 1 and the front baffle 41, and the slider is slidably inserted into the inner cavity of the slide groove 412 through an elastic element, a driving motor 411 is installed on the top wall of the working platform 1, and a connecting rope is installed on the outer wall of the slider, and the end of the connecting rope away from the slider is in contact with the outer wall of the output shaft on the left side of the driving motor 411;

[0035] See also Figure 2 A moving groove 410 is provided on the front wall of the rear front baffle plate 41, and a sealing gate 49 is slidably inserted in the front side of the inner cavity of the moving groove 410, and a reset spring is connected to the bottom of the sealing gate 49, and the bottom of the reset spring is connected to the bottom of the inner cavity of the moving groove 410. When the sealing plate 43 moves downward, it contacts the sealing gate 49, driving the sealing gate 49 to move downward in the moving groove 410, and the sealed space formed by the front baffle plate 41 and the movable plate 42 is deflated, so that the plate body 431 can perform a second bending operation on the glass plate.

[0036] Compared with Example 1, components such as an electromagnet 45 and a magnetic block are added, and the sealed space between the front baffle 41, the movable plate 42 and the sealing plate 43 is removed, so that the sealing plate 43 continues to move downward, and the groove of the plate body 431 is pressed to the outside of the glass plate, and the glass plate is squeezed again to ensure the quality of the bending of the glass plate.

[0037] A method for bending a glass plate by pneumatic pressure for building construction comprises the following steps:

[0038] S1: Put the heated glass plate onto the arc block 5 so that the glass block is between the front baffle plate 41 and the movable plate 42, start the driving mechanism 3, drive the sealing plate 43 to move down to the top of the two sets of front baffle plates 41 and the movable plate 42, and the elastic member in the slot 433 presses the movable baffle plate 432 outward, so that the movable baffle plate 432 contacts the inner wall of the front baffle plate 41 and the movable plate 42, forming a closed space;

[0039] S2: The air supply device injects air into the space, increasing the air pressure above the inner cavity of the space. The shielding plate 46 will also move downward under the action of the air pressure, and the air enters the inner cavity of the air storage tank 464 through the air inlet hole 465. As the air pressure increases, the sealing gasket 463 will gradually expand, so that the sealing gasket 463 and the top wall of the processed glass plate are more closely attached, ensuring that the glass plate is processed by air. As the glass plate is gradually bent, the swing block 462 will rotate at the mounting block 461, so that the sealing gasket 463 can fully fit with the glass plate;

[0040] S3: The driving structure 3 is started again, so that the sealing plate 43 continues to move downward. When the sealing plate 43 moves downward, it contacts the sealing gate 49, driving the sealing gate 49 to move downward in the moving groove 410, and the sealed space formed by the front baffle plate 41 and the movable plate 42 is deflated.

[0041] S4: As the sealing plate 43 continues to move downward, the upper conductive sheet 435 and the lower conductive sheet 48 are fitted together, so that the electromagnet 45 is energized to work and attract the magnetic block, so that the two groups of movable plates 42 move away from each other, and the driving motor 411 works to pull the connecting rope to move the two groups of front baffles 41 away from each other, and the sealing space between the front baffle 41, the movable plate 42 and the sealing plate 43 is removed, so that the sealing plate 43 continues to move downward, and the groove of the plate body 431 is pressed against the outside of the glass plate, and the glass plate is squeezed again to ensure the bending quality of the glass plate.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatically pressurized curved glass plate bending device for construction, comprising a working platform (1), a frame (2) and a driving mechanism (3), characterized in that: The frame (2) is mounted on the top left wall of the working platform (1), and the driving mechanism (3) is mounted on the top wall of the frame (2); A pneumatic bending assembly (4) is installed on the right side wall at the top of the working platform (1); the bottom output shaft of the driving mechanism (3) extends into the inner cavity of the frame (2) and is connected to the top wall of the pneumatic bending assembly (4); an arc block (5) is installed on the top wall of the working platform (1), and the arc block (5) is located in the inner cavity of the pneumatic bending assembly (4).

2. The pneumatically pressurized curved glass plate bending device for construction according to claim 1, characterized in that: The pneumatic bending assembly (4) comprises two groups of front baffles (41) mounted on the right side wall of the top of the working platform (1), two groups of movable plates (42) are mounted on the top wall of the working platform (1), and the front and rear side walls of the two groups of movable plates (42) are respectively in contact with the outer walls of the two groups of front baffles (41) that are close to each other, a sealing plate (43) is arranged at the top wall of the front baffle (41), and the top wall of the sealing plate (43) is connected to the bottom output shaft of the driving mechanism (3), and an air supply device is mounted on the front side wall of the front baffle (41).

3. The pneumatically pressurized curved glass plate bending device for construction according to claim 2, characterized in that: The top wall of the working platform (1) is provided with two groups of guide grooves (44), the bottom wall of the movable plate (42) is provided with a guide block, and the guide block is slidably inserted in the inner cavity of the guide groove (44), and a connecting spring is installed between the guide block and the inner cavity of the guide groove (44), the outer walls of the two groups of movable plates (42) close to each other are provided with sliding grooves, and a shielding plate (46) is slidably inserted in the inner cavity of the sliding groove, and a tension spring (47) is installed between the bottom wall of the shielding plate (46) and the bottom of the inner cavity of the sliding groove.

4. The pneumatically pressurized curved glass plate bending device for construction according to claim 3, characterized in that: The shielding plate (46) comprises a mounting block (461) which is slidably inserted into the inner cavity of the sliding groove; a swing block (462) is hingedly connected to the outer wall of one side of the mounting block (461) close to the arc block (5); a sealing gasket (463) is installed on the bottom wall of the swing block (462); an air storage groove (464) is provided in the inner cavity of the sealing gasket (463); air inlet holes (465) are evenly provided on the top wall of the swing block (462), and the air inlet holes (465) are connected to the inner cavity of the air storage groove (464).

5. The pneumatically pressurized curved glass plate bending device for construction according to claim 2, characterized in that: The sealing plate (43) comprises a plate body (431) connected to the bottom output shaft of the driving mechanism (3); a groove matching the arc block (5) is formed on the bottom wall of the plate body (431); two groups of slots (433) are formed on the top wall of the plate body (431); and the inner cavity of the slot (433) is slidably connected to the movable baffle (432) via an elastic member.

6. The pneumatically pressurized curved glass plate bending device for construction according to claim 5, characterized in that: A placement groove is provided on the front side wall of the rear front baffle (41), and a lower conductive sheet (48) is installed in the inner cavity of the placement groove; a movable groove (434) is provided on the outer wall of the rear side of the plate body (431), and an upper conductive sheet (435) is slidably installed in the inner cavity of the movable groove (434); an electromagnet (45) is installed in the inner cavity of the guide groove (44), and the electromagnet (45) is electrically connected to the lower conductive sheet (48); the electromagnet (45) is located on the outer side of the guide block, and a magnetic block is installed on the outer wall of the guide block on one side close to the electromagnet (45).

7. The pneumatically pressurized curved glass plate bending device for construction according to claim 6, characterized in that: A slider is installed on the bottom wall of the front baffle (41), a slide groove (412) is provided at the connection portion between the working platform (1) and the front baffle (41), and the slider is slidably inserted into the inner cavity of the slide groove (412) through an elastic element, a driving motor (411) is installed on the top wall of the working platform (1), and a connecting rope is installed on the outer wall of the slider, and the end of the connecting rope away from the slider is in contact with the outer wall of the left output shaft of the driving motor (411).

8. The pneumatically pressurized curved glass plate bending device for construction according to claim 7, characterized in that: A movable groove (410) is provided on the front side wall of the rear front baffle (41), a sealing gate (49) is slidably inserted into the front side of the inner cavity of the movable groove (410), and a return spring is connected to the bottom of the sealing gate (49), and the bottom of the return spring is connected to the bottom of the inner cavity of the movable groove (410).

9. A method for bending a glass sheet by pneumatic pressure for construction according to claim 8, characterized in that: The steps include: S1: placing the heated glass plate onto the arc block (5) so that the glass block is between the front baffle plate (41) and the movable plate (42), starting the driving mechanism (3), driving the sealing plate (43) to move down to the top of the two sets of front baffle plates (41) and the movable plate (42), and the elastic member in the groove (433) presses the movable baffle plate 432 outward, so that the movable baffle plate (432) contacts the inner wall of the front baffle plate (41) and the movable plate (42), forming a closed space; S2: The air supply device injects air into the space, so that the air pressure above the inner cavity of the space increases. The shielding plate (46) also moves downward under the action of the air pressure, and the air enters the inner cavity of the air storage tank (464) through the air inlet hole (465). As the air pressure increases, the sealing gasket (463) gradually expands, so that the sealing gasket (463) and the top wall of the processed glass plate fit more closely, ensuring that the glass plate is processed by air. As the glass plate is gradually bent, the swing block (462) rotates at the mounting block (461), so that the sealing gasket (463) can fully fit the glass plate. S3: The driving structure (3) is started again, so that the sealing plate (43) continues to move downward. When the sealing plate (43) moves downward, it contacts the sealing gate (49), driving the sealing gate (49) to move downward in the moving groove (410), thereby performing a deflation operation on the sealed space formed by the front baffle plate (41) and the movable plate (42); S4: As the sealing plate (43) continues to move downward, the upper conductive sheet (435) and the lower conductive sheet (48) are fitted together, so that the electromagnet (45) is powered on and works, and is attracted to the magnetic block, so that the two groups of movable plates (42) move away from each other, and the driving motor (411) works to pull the connecting rope, so that the two groups of front baffles (41) move away from each other, and the sealed space between the front baffle (41), the movable plate (42) and the sealing plate (43) is removed, so that the sealing plate (43) continues to move downward, so that the groove of the plate body (431) is pressed against the outer side of the glass plate, and the glass plate is squeezed again to ensure the bending quality of the glass plate.

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