Flexible lining press-fit positioning device for curved-surface liquid crystal display foam box production

Abstract

The invention belongs to the technical field of press-fit devices, and particularly relates to a flexible lining press-fit positioning device for curved-surface liquid crystal display foam box production, which comprises a base, the upper side wall of the base is fixedly connected with a controller, the base is of a hollow structure, and the interior of the base is fixedly connected with an angle motor. The output end of the angle motor penetrates through the base and is fixedly connected with a rotating plate. When the flexible lining is placed in the foam box, the position of a display screen in the foam box can be fixed firstly, the stability of subsequent placement of the flexible lining is facilitated, when the flexible lining is taken, the flexible lining can be taken in a negative pressure adsorption mode, mechanical clamping of the flexible lining is avoided, and the production efficiency is improved. And meanwhile, additional negative pressure equipment is not needed, so that the use cost of the equipment is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of pressing devices, and in particular relates to a flexible lining pressing and positioning device for producing foam boxes for curved liquid crystal display screens. Background Art

[0002] Curved LCD screens must be protected from deformation or damage due to collision or extrusion during transportation. Therefore, when using foam boxes to pack curved LCD screens, a lining must be placed inside the foam box to support the screen.

[0003] In the packaging production of curved LCD screens, there are two main methods for placing the inner lining: manual and mechanical. Mechanical placement is adopted by most manufacturers due to its high efficiency. However, when the inner lining is placed into the foam box by mechanical devices to position the curved LCD screen, the vibration generated during the mechanical placement process can easily cause the screen inside the foam box to shake, resulting in the screen's position shifting, and then conflicting with the inner lining, causing damage to the screen or the inner lining.

[0004] At the same time, when the liner is placed in the foam box, the friction between the liner and the foam box will produce fine particles. These particles will float into the air and may be inhaled by the operator, affecting his health.

[0005] Therefore, a flexible lining pressing and positioning device for producing curved liquid crystal display foam boxes is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to solve the above problems and provide a flexible lining pressing and positioning device for producing foam boxes of curved liquid crystal display screens.

[0007] To achieve the above objectives, the present invention adopts the following technical solutions: a flexible lining pressing and positioning device for the production of a curved liquid crystal display foam box, comprising a base, the upper side wall of which is fixedly connected to a controller, the base being a hollow structure, the interior of which is fixedly connected to an angle motor, the output end of which passes through the base and is fixedly connected to a rotating plate, the upper side wall of which is fixedly connected to a support frame, the support frame being a T-shaped structure, and further comprising:

[0008] Two conveyor belts are located on both sides of the base and above the base. The left conveyor belt transports the foam box and the display screen. The surface of the right conveyor belt is connected to a positioning seat, and two liners are inserted into the positioning seat.

[0009] Two negative pressure positioning components are fixedly connected to the left and right sides of the lower side wall of the support frame, respectively, for adsorbing the lining and fixing the display screen;

[0010] A dust removal assembly, fixedly connected to the upper side wall of the support frame, for adsorbing dust;

[0011] The extrusion component is connected to the lower side of the negative pressure positioning component and is used to fix the position of the foam box.

[0012] Preferably, the negative pressure positioning assembly includes a first electric push rod fixedly connected to the lower side wall of the support frame, the movable end of the first electric push rod is fixedly connected to a lifting plate, the lower side wall of the lifting plate is fixedly connected to two telescopic cylinders, the upper and lower ends of the telescopic cylinder are closed structures, the upper inner wall of the telescopic cylinder is fixedly connected to a telescopic tube by a spring, the tube wall of the telescopic tube is provided with an air vent, the tube wall of the telescopic tube is located in the telescopic tube and is fixedly sleeved with a piston ring, the lower end of the telescopic tube passes through the telescopic tube and is fixedly connected to a suction cup, the side wall of the telescopic tube is fixedly connected to an air pressure pipe, a one-way valve is provided in the air pressure pipe, the lower side wall of the lifting plate is fixedly connected to a positioning electric push rod, the movable end of the positioning electric push rod is fixedly connected to a positioning cylinder that matches the display screen, and the lower end of the positioning cylinder is an open structure.

[0013] Preferably, the dust removal assembly includes a dust removal box fixedly connected to the upper side wall of the support frame, the side wall of the dust removal box is fixedly connected to a dust suction pump, the right side wall of the dust removal box is fixedly connected to a dust suction pipe, the dust suction pipe is an inverted L-shaped structure, the lower end of the dust suction pipe passes through the support frame and is fixedly connected to a horizontal pipe through an elastic tube, the lower side wall of the horizontal pipe is fixedly connected to two vertical pipes, a dust suction chamber is opened inside the lifting plate, the lower end of the vertical pipe is connected to the dust suction chamber, and the lower side wall of the dust suction chamber is opened with multiple dust suction ports.

[0014] Preferably, the extrusion assembly includes an annular tube fixedly connected to the lower side wall of the lifting plate, the lower side tube wall of the annular tube is fixedly connected to multiple connecting tubes, the side wall of the connecting tube is fixedly connected to the extrusion cylinder through a bracket, the inner wall of the extrusion cylinder is fixedly connected to the piston seat through a spring, the side wall of the piston seat is fixedly connected to the extrusion rod, the extrusion rod extends out of the extrusion cylinder at one end away from the piston seat and is fixedly connected to the extrusion plate, the tube wall of the air outlet end of the dust suction pump is fixedly connected to the support tube through an elastic tube, the tube wall of the support tube is fixedly connected to two bent pipes, the air outlet end of the dust suction pump is provided with a first regulating valve, a second regulating valve is provided in the bent pipe, and the lower end of the bent pipe is connected to the annular tube.

[0015] Preferably, the inner wall of the dust removal box is fixedly connected to a filter screen, and the upper inner wall of the dust removal box is fixedly connected to two air pressure sensors, and the two air pressure sensors are respectively located on the left and right sides of the filter screen. The upper wall of the dust removal box is fixedly connected to a vibration tube, and the vibration tube is an inverted L-shaped structure. The inner wall of the vibration tube is fixedly connected to a piston plate through a spring, and the right side wall of the piston plate is fixedly connected to a knocking rod. A first magnetic control valve is provided in the vibration tube, and the same ventilation pipe is fixedly connected between the vibration tube and the dust removal box, and a second magnetic control valve is provided in the ventilation pipe.

[0016] Preferably, a weight sensor is embedded in the lower inner wall of the dust removal box, the weight sensor is electrically connected to the controller, and the rear side of the dust removal box is an openable structure.

[0017] Preferably, the side wall of the telescopic cylinder is fixedly connected to an air intake pipe, and a control valve is provided in the air intake pipe.

[0018] Preferably, a gathering hood is fixedly connected to the lower side wall of the lifting plate, and the gathering hood is located outside the multiple dust suction ports.

[0019] Compared with the existing technology, the advantages of a flexible lining pressing and positioning device for producing a curved liquid crystal display foam box are:

[0020] 1. By setting up the negative pressure positioning component, when the flexible lining is placed in the foam box, the position of the display screen inside the foam box can be fixed first, which is convenient for the stability of the subsequent placement of the flexible lining. When taking the flexible lining, the flexible lining can be taken by negative pressure adsorption. While avoiding mechanical clamping of the flexible lining and causing damage to the flexible lining, no additional negative pressure equipment is required, which reduces the cost of using the equipment.

[0021] 2. Through the dust removal component, when the flexible lining is placed in the foam box, the foam dust scraped off can be absorbed and processed, thereby avoiding the problem that the dust released into the air is inhaled into the body of the operator and affects the operator's health.

[0022] 3. Through the extrusion component, the position of the foam box can be automatically fixed before the flexible liner is placed in the foam box, thereby avoiding the problem of position displacement of the foam box due to vibration during transportation, thereby increasing the difficulty of placing the flexible liner and improving the convenience of placing the flexible liner. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a flexible lining pressing and positioning device for producing a curved liquid crystal display foam box provided by the present invention;

[0024] Figure 2This is a structural schematic diagram of an extrusion component in a flexible lining pressing and positioning device for producing a curved liquid crystal display foam box provided by the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of a telescopic cylinder in a flexible lining pressing and positioning device for producing a curved liquid crystal display foam box provided by the present invention;

[0026] Figure 4 This is a schematic diagram of the internal structure of an extrusion cylinder in a flexible lining pressing and positioning device for producing a curved liquid crystal display foam box provided by the present invention;

[0027] Figure 5 This is a schematic diagram of the internal structure of a dust removal box in a flexible lining pressing and positioning device for producing a curved liquid crystal display foam box provided by the present invention;

[0028] Figure 6 The diagram is a schematic diagram of the shape structure of a positioning cylinder in a flexible lining pressing and positioning device for producing a foam box for a curved liquid crystal display screen provided by the present invention.

[0029] In the figure: 1 base, 2 controller, 3 angle motor, 4 rotating plate, 5 support frame, 6 conveyor belt, 7 positioning seat, 8 negative pressure positioning component, 81 first electric push rod, 82 lifting plate, 9 telescopic cylinder, 10 telescopic tube, 11 air vent, 12 piston ring, 13 suction cup, 14 air pressure tube, 15 one-way valve, 16 positioning electric push rod, 17 positioning cylinder, 18 dust removal component, 181 dust removal box, 182 dust suction pump, 19 dust suction pipe, 20 horizontal pipe, 21 vertical pipe, 22 Dust suction chamber, 23 extrusion assembly, 231 annular tube, 232 connecting tube, 24 extrusion cylinder, 25 piston seat, 26 extrusion rod, 27 extrusion plate, 28 support tube, 29 elbow, 30 first regulating valve, 31 second regulating valve, 32 filter, 33 air pressure sensor, 34 vibration tube, 35 piston plate, 36 knocking rod, 37 first magnetic control valve, 38 ventilation pipe, 39 second magnetic control valve, 40 weight sensor, 41 intake pipe, 42 control valve, 43 gathering cover. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figures 1-6As shown, a flexible lining pressing and positioning device for the production of foam boxes for curved liquid crystal display screens includes a base 1, a controller 2 is fixedly connected to the upper side wall of the base 1, the base 1 is a hollow structure, an angle motor 3 is fixedly connected to the interior of the base 1, the output end of the angle motor 3 passes through the base 1 and is fixedly connected to a rotating plate 4, the upper side wall of the rotating plate 4 is fixedly connected to a support frame 5, the support frame 5 is a T-shaped structure, and further includes:

[0032] Two conveyor belts 6 are respectively located on both sides of the base 1 and above the base 1. The left conveyor belt 6 transports the foam box and the display screen. The surface of the right conveyor belt 6 is connected to a positioning seat 7, and two liners are inserted into the positioning seat 7;

[0033] Two negative pressure positioning components 8 are respectively fixedly connected to the left and right sides of the lower side wall of the support frame 5, and are used for adsorption of the lining and fixation of the display screen. The negative pressure positioning component 8 includes a first electric push rod 81 fixedly connected to the lower side wall of the support frame 5, and the moving end of the first electric push rod 81 is fixedly connected to the lifting plate 82. The lower side wall of the lifting plate 82 is fixedly connected to the gathering cover 43. The gathering cover 43 is located on the outside of multiple dust suction ports. The lower side wall of the lifting plate 82 is fixedly connected to two telescopic cylinders 9. The upper and lower ends of the telescopic cylinder 9 are both closed structures. The upper inner wall of the telescopic cylinder 9 is fixedly connected to the telescopic tube 10 through a spring. The tube wall of the telescopic tube 10 is provided with an air vent 11. The tube wall of the telescopic tube 10 located in the telescopic cylinder 9 is fixedly sleeved with a piston ring 12. The lower end of the telescopic tube 10 passes through the telescopic cylinder 9 and is fixedly connected to a suction cup 1 3. The side wall of the telescopic cylinder 9 is fixedly connected with an air pressure tube 14, and a one-way valve 15 is provided in the air pressure tube 14. The lower side wall of the lifting plate 82 is fixedly connected with a positioning electric push rod 16. The moving end of the positioning electric push rod 16 is fixedly connected with a positioning cylinder 17 that matches the display screen. The lower end of the positioning cylinder 17 is an open structure. The side wall of the telescopic cylinder 9 is fixedly connected with an air intake pipe 41, and a control valve 42 is provided in the air intake pipe 41. When the flexible liner is placed in the foam box, the position of the display screen inside the foam box can be fixed first, which is convenient for the stability of the subsequent placement of the flexible liner. When taking the flexible liner, the flexible liner can be taken by negative pressure adsorption. While avoiding mechanical clamping of the flexible liner and causing damage to the flexible liner, no additional negative pressure equipment is required, which reduces the cost of using the equipment.

[0034] The dust removal component 18 is fixedly connected to the upper side wall of the support frame 5 and is used for adsorption of dust. The dust removal component 18 includes a dust removal box 181 fixedly connected to the upper side wall of the support frame 5. The side wall of the dust removal box 181 is fixedly connected to a dust suction pump 182. The lower inner wall of the dust removal box 181 is inlaid with a weight sensor 40. The weight sensor 40 is electrically connected to the controller 2. The rear side of the dust removal box 181 is an openable structure. The right side wall of the dust removal box 181 is fixedly connected to a dust suction pipe 19. The dust suction pipe 19 is an inverted L-shaped structure. The lower end of the dust suction pipe 19 passes through the support frame 5 and is fixedly connected to a horizontal pipe 20 through an elastic tube. The lower side wall of the tube 20 is fixedly connected with two vertical tubes 21, and a dust suction chamber 22 is opened inside the lifting plate 82. The lower end of the vertical tube 21 is connected to the dust suction chamber 22, and the lower side wall of the dust suction chamber 22 is opened with multiple dust suction ports. When the flexible liner is placed in the foam box, the position of the display screen inside the foam box can be fixed first, which is convenient for the stability of the subsequent placement of the flexible liner. When taking out the flexible liner, the flexible liner can be taken out by negative pressure adsorption, which avoids mechanical clamping of the flexible liner and damage to the flexible liner. At the same time, no additional negative pressure equipment is required, which reduces the cost of using the equipment.

[0035] The squeezing assembly 23 is connected to the lower side of the negative pressure positioning assembly 8 and is used to fix the position of the foam box. The squeezing assembly 23 includes an annular tube 231 fixedly connected to the lower side wall of the lifting plate 82. The lower side wall of the annular tube 231 is fixedly connected to multiple connecting tubes 232. The side wall of the connecting tube 232 is fixedly connected to the squeezing cylinder 24 through a bracket. The inner wall of the squeezing cylinder 24 is fixedly connected to the piston seat 25 through a spring. The side wall of the piston seat 25 is fixedly connected to the squeezing rod 26. The end of the squeezing rod 26 away from the piston seat 25 extends out of the squeezing cylinder 24 and is fixedly connected to the squeezing plate 27. The pipe wall of the air outlet end of the dust pump 182 is fixedly connected to the support pipe 28 through an elastic tube, and the pipe wall of the support pipe 28 is fixedly connected to two curved pipes 29. The air outlet end of the dust suction pump 182 is provided with a first regulating valve 30, and a second regulating valve 31 is provided in the curved pipe 29. The lower end of the curved pipe 29 is connected to the ring pipe 231. Before the flexible liner is placed in the foam box, the position of the foam box can be automatically fixed, thereby avoiding the problem of position displacement of the foam box due to vibration during transportation, thereby increasing the difficulty of placing the flexible liner, and improving the convenience of placing the flexible liner.

[0036] The inner wall of the dust removal box 181 is fixedly connected to a filter 32, and the upper inner wall of the dust removal box 181 is fixedly connected to two air pressure sensors 33, which are respectively located on the left and right sides of the filter 32. The upper wall of the dust removal box 181 is fixedly connected to a vibration tube 34, and the vibration tube 34 is an inverted L-shaped structure. The inner wall of the vibration tube 34 is fixedly connected to a piston plate 35 through a spring, and the right side wall of the piston plate 35 is fixedly connected to a knocking rod 36. A first magnetic control valve 37 is provided in the vibration tube 34, and the vibration tube 34 and the dust removal box 181 are fixedly connected with the same ventilation pipe 38. A second magnetic control valve 39 is provided in the ventilation pipe 38, which can automatically vibrate the dust on the surface of the filter 32.

[0037] The operating principle of the present invention is now explained as follows: the flexible liner is conveyed to the bottom of the right negative pressure positioning assembly 8 by the conveyor belt 6 on the right, and a position switch is provided above the base 1 (not shown in the figure. The position of the flexible liner is detected by the position switch to control the start and stop of the conveyor belt 6). Then the controller 2 will control the first electric push rod 81 to work, and the first electric push rod 81 will drive the lifting plate 82 to move downward to the set position. In the process of moving downward, the lifting plate 82 will drive the telescopic cylinder 9, the telescopic tube 10 and the suction cup 13 to move downward together. When the suction cup 13 contacts the flexible liner below, the lower end of the suction cup 13 and the telescopic tube 10 will stop moving. , and the telescopic cylinder 9 will continue to move downward under the drive of the lifting plate 82, so that the telescopic tube 10 will slide relatively in the telescopic cylinder 9, and the telescopic cylinder 9 will drive the piston ring 12 to move, and the piston ring 12 will compress the gas inside the telescopic cylinder 9, so that the gas inside the telescopic cylinder 9 will be discharged through the air pressure tube 14 and the one-way valve 15. When the moving end of the first electric push rod 81 moves downward to the specified position, it will drive the lifting plate 82 to move upward. Referring to the above principle, the telescopic tube 10 will slide relatively downward in the telescopic cylinder 9, thereby reducing the internal air pressure of the telescopic cylinder 9. Under the negative pressure state, the suction cup 13 will adsorb the flexible lining and remove the flexible lining from the positioning seat 7;

[0038] When the first electric push rod 81 drives the flexible lining to move upward to the set position, the controller 2 will control the angle motor 3 to work, and the angle motor 3 will drive the support frame 5 and the flexible lining to rotate one hundred and eighty degrees through the turn plate 4, so that the flexible lining rotates to the left side of the support frame 5. Then, the controller 2 controls the conveyor belt 6 on the left to work, and the conveyor belt 6 will drive the foam box and the display screen to move to the bottom of the flexible lining (the position of the foam box is limited by the position switch). Then, the controller 2 controls the dust suction pump 182 to work, and controls the first regulating valve 30 on this side to work for two seconds. The dust suction pump 182 extracts the gas inside the dust removal box 181 and transports the gas to the annular pipe 231 on this side through the bend 29 on this side. The gas will enter the extrusion cylinder 24 through the annular pipe 231 and the connecting pipe 232, so that the air pressure inside the extrusion cylinder 24 increases, and the piston seat 25 will drive the extrusion rod 26 and the extrusion plate 27 to move under the action of the air pressure, and use the extrusion plate 27 to adjust the position of the foam box on the surface of the conveyor belt 6. After the first electric push rod 81 is moved to the set position, the controller 2 will control the control valve 42 on this side to open, so that the external air enters the telescopic cylinder 9 through the air inlet pipe 41, so that the suction cup 13 is connected to the outside through the air vent 11 and the air inlet pipe 41. When the first electric push rod 81 drives the suction cup 13 to move upward, the suction cup 13 is no longer in a negative pressure state, and the suction cup 13 will not adsorb the flexible lining.

[0039] During the process of inserting the flexible liner into the foam box, the controller 2 will control the dust suction pump 182 to work all the time. The dust suction pump 182 will extract the gas inside the dust box 181, and the air pressure inside the dust box 181 will decrease. The external gas will carry the dust wiped off by the foam box through the dust suction port, vertical pipe 21, horizontal pipe 20 and dust suction pipe 19 into the dust box 181 for storage. The dust entering the dust box 181 will be blocked by the filter 32. When there is too much dust on the surface of the filter 32, the controller 2 will detect that the air pressure difference on both sides of the filter 32 is large through the air pressure sensor 33 inside the dust box 181, and the controller 2 will control the first magnetic control valve 37 and the second magnetic control valve 39 to work intermittently. , the controller 2 first controls the first magnetic control valve 37 to open. Since the inside of the dust removal box 181 is in a negative pressure state, the air pressure on the right side of the piston plate 35 will become smaller, and the piston plate 35 will drive the knocking rod 36 to move, and use the knocking rod 36 to knock on the filter 32, and vibrate the surface dust to make some dust fall off. After 0.5 seconds, the controller 2 will control the second magnetic control valve 39 to open, and the external air will enter the dust removal box 181 through the ventilation pipe 38, so that the air pressure on the left side of the filter 32 is reduced. Under the action of the spring tension, the piston plate 35 will drive the knocking rod 36 to move into the vibration tube 34, retract the knocking rod 36, and reciprocate in sequence to process the dust on the surface of the filter 32.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flexible lining pressing and positioning device for producing a foam box for a curved liquid crystal display screen, comprising a base (1), wherein the upper side wall of the base (1) is fixedly connected to a controller (2), the base (1) is a hollow structure, an angle motor (3) is fixedly connected inside the base (1), an output end of the angle motor (3) passes through the base (1) and is fixedly connected to a rotating plate (4), the upper side wall of the rotating plate (4) is fixedly connected to a support frame (5), the support frame (5) is a T-shaped structure, and is characterized in that: Also includes: Two conveyor belts (6) are respectively located on both sides of the base (1) and above the base (1). The left conveyor belt (6) transports the foam box and the display screen. The surface of the right conveyor belt (6) is connected to a positioning seat (7), and two liners are inserted into the positioning seat (7). Two negative pressure positioning components (8) are fixedly connected to the left and right sides of the lower side wall of the support frame (5) respectively, and are used for adsorption of the lining and fixation of the display screen; A dust removal assembly (18) fixedly connected to the upper side wall of the support frame (5) for adsorbing dust; The squeezing assembly (23) is connected to the lower side of the negative pressure positioning assembly (8) and is used to fix the position of the foam box.

2. The flexible lining pressing and positioning device for producing a curved liquid crystal display foam box according to claim 1, characterized in that: The negative pressure positioning assembly (8) includes a first electric push rod (81) fixedly connected to the lower side wall of the support frame (5), the movable end of the first electric push rod (81) is fixedly connected to a lifting plate (82), the lower side wall of the lifting plate (82) is fixedly connected to two telescopic cylinders (9), the upper and lower ends of the telescopic cylinder (9) are both closed structures, the upper inner wall of the telescopic cylinder (9) is fixedly connected to a telescopic tube (10) through a spring, the tube wall of the telescopic tube (10) is provided with an air vent (11), and the telescopic tube (10) is located on the telescopic cylinder. The tube wall fixed sleeve in (9) is provided with a piston ring (12), the lower end of the telescopic tube (10) passes through the telescopic cylinder (9) and is fixedly connected with a suction cup (13), the side wall of the telescopic cylinder (9) is fixedly connected with an air pressure tube (14), a one-way valve (15) is provided in the air pressure tube (14), the lower side wall of the lifting plate (82) is fixedly connected with a positioning electric push rod (16), the moving end of the positioning electric push rod (16) is fixedly connected with a positioning cylinder (17) that matches the display screen, and the lower end of the positioning cylinder (17) is an open structure.

3. The flexible lining pressing and positioning device for producing a curved liquid crystal display foam box according to claim 2, characterized in that: The dust removal assembly (18) comprises a dust removal box (181) fixedly connected to the upper side wall of the support frame (5); the side wall of the dust removal box (181) is fixedly connected to a dust suction pump (182); the right side wall of the dust removal box (181) is fixedly connected to a dust suction pipe (19); the dust suction pipe (19) is an inverted L-shaped structure; the lower end of the dust suction pipe (19) passes through the support frame (5) and is fixedly connected to a horizontal pipe (20) through an elastic pipe; the lower side wall of the horizontal pipe (20) is fixedly connected to two vertical pipes (21); a dust suction chamber (22) is provided inside the lifting plate (82); the lower end of the vertical pipe (21) is connected to the dust suction chamber (22); and the lower side wall of the dust suction chamber (22) is provided with a plurality of dust suction ports.

4. The flexible lining pressing and positioning device for producing a curved liquid crystal display foam box according to claim 3, characterized in that: The extrusion assembly (23) includes an annular tube (231) fixedly connected to the lower side wall of the lifting plate (82), the lower side wall of the annular tube (231) is fixedly connected to a plurality of connecting tubes (232), the side wall of the connecting tube (232) is fixedly connected to the extrusion cylinder (24) through a bracket, the inner wall of the extrusion cylinder (24) is fixedly connected to the piston seat (25) through a spring, the side wall of the piston seat (25) is fixedly connected to the extrusion rod (26), and the extrusion rod (26) is away from the movable One end of the plug seat (25) extends out of the extrusion cylinder (24) and is fixedly connected to an extrusion plate (27). The pipe wall of the air outlet end of the dust suction pump (182) is fixedly connected to a support pipe (28) via an elastic pipe. The pipe wall of the support pipe (28) is fixedly connected to two curved pipes (29). The air outlet end of the dust suction pump (182) is provided with a first regulating valve (30). A second regulating valve (31) is provided in the curved pipe (29). The lower end of the curved pipe (29) is connected to the ring pipe (231).

5. The flexible lining pressing and positioning device for producing a curved liquid crystal display foam box according to claim 3, characterized in that: The inner wall of the dust removal box (181) is fixedly connected to a filter screen (32), and the upper inner wall of the dust removal box (181) is fixedly connected to two air pressure sensors (33), and the two air pressure sensors (33) are respectively located on the left and right sides of the filter screen (32). The upper wall of the dust removal box (181) is fixedly connected to a vibration tube (34), and the vibration tube (34) is an inverted L-shaped structure. The inner wall of the vibration tube (34) is fixedly connected to a piston plate (35) through a spring, and the right side wall of the piston plate (35) is fixedly connected to a knocking rod (36). A first magnetic control valve (37) is provided in the vibration tube (34), and a same ventilation tube (38) is fixedly connected between the vibration tube (34) and the dust removal box (181), and a second magnetic control valve (39) is provided in the ventilation tube (38).

6. The flexible lining pressing and positioning device for producing a curved liquid crystal display foam box according to claim 3, characterized in that: A weight sensor (40) is embedded on the lower inner wall of the dust removal box (181), the weight sensor (40) and the controller (2) are electrically connected, and the rear side of the dust removal box (181) is an openable structure.

7. The flexible lining pressing and positioning device for producing a curved liquid crystal display foam box according to claim 2, characterized in that: The side wall of the telescopic cylinder (9) is fixedly connected to an air intake pipe (41), and a control valve (42) is provided in the air intake pipe (41).

8. The flexible lining pressing and positioning device for producing a curved liquid crystal display foam box according to claim 2, characterized in that: The lower side wall of the lifting plate (82) is fixedly connected to a gathering hood (43), and the gathering hood (43) is located outside the plurality of dust suction ports.

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