Screen pressing and pressure maintaining device

Abstract

The utility model relates to the field of screen production devices, in particular to a screen pressing and pressure maintaining device. The press-fit device comprises a table top fixed to a rack, a plurality of press-fit modules are arranged on the table top, each press-fit module comprises a fixing groove formed in the table top, lower dies are arranged at the positions of the fixing grooves, a plurality of fixing strips are fixed to the lower dies, and positioning grooves penetrating through the lower dies are symmetrically formed in the two sides of the lower dies. A plurality of positioning grooves are formed in the lower die, positioning blocks used in cooperation with the positioning grooves are fixed to the table top, a plurality of limiting grooves penetrating through the lower die are further formed in the lower die, limiting blocks are fixed to the positions, corresponding to the limiting grooves, of the table top, a plurality of supporting blocks are further fixed in the fixing grooves below the lower die, and jacking air cylinders are fixed to the positions, below the lower die, of the machine frame. A top plate is further fixed to the upper portion of the table top, a plurality of pressure maintaining air cylinders are fixed to the top plate, and the tail ends of piston rods of the pressure maintaining air cylinders are all fixed to a pressing plate. The device can perform pressure maintaining operation on a plurality of screens at a time.

Description

Technical Field

[0001] The present invention relates to the field of screen production devices, and particularly to a screen pressing and pressure maintaining device. Background Art

[0002] With the development of society, screens are installed on more and more electrical devices, enabling better human-machine interaction between users and electrical devices. Currently, screens usually include a tabletop and a display screen. The tabletop can protect the display screen. The bonding methods between the tabletop and the display screen include full bonding and non-full bonding. Full bonding means using water glue or optical glue to completely bond the tabletop and the display screen together without gaps. Non-full bonding means that the tabletop and the display screen are only bonded at the peripheral edges with glue. After the bonding is completed, pressure needs to be applied to the screen surface to make the bonding effect better. Patent Application No.: CN202322888778.8 discloses a bonding screen pressure maintaining jig, including a workbench, and a first convex bracket is fixedly connected to the top of the workbench, and a placement groove is opened at the top of the first convex bracket; the panel to be bonded is placed and fixed in the placement groove, and then the screen and the panel are bonded. When the screen bonding is completed, the servo motor is turned on, and the servo motor automatically stops when it reaches the set number of revolutions. At this time, the pressure plate applies pressure to the screen at the top of the placement groove to achieve the pressure maintaining operation for the screen. However, such a screen pressure maintaining tooling can only press and connect one electronic product at a time during pressure maintaining, which greatly affects the production efficiency of the screen.

[0003] The present invention is researched and proposed in view of the deficiencies of the prior art. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a screen pressing and pressure maintaining device.

[0005] The present invention can be realized by the following technical solutions:

[0006] The present invention discloses a screen pressing and holding device, which includes a table fixed on a frame. A plurality of pressing modules are arranged on the table. Each pressing module includes a fixing groove arranged on the table. A lower mold is arranged at the position of each fixing groove. A plurality of fixing bars are fixed on the lower mold. Positioning grooves penetrating the lower mold are symmetrically arranged on both sides of the lower mold. Positioning blocks cooperating with the positioning grooves are fixed on the table. A plurality of limiting grooves penetrating the lower mold are also arranged on the lower mold. Limiting blocks corresponding to the limiting grooves are fixed at corresponding positions on the table. A plurality of supporting blocks are further fixed in the fixing grooves below the lower mold. Lifting cylinders are fixed on the frame below the lower mold. A top plate is further fixed above the table. A plurality of holding cylinders are fixed on the top plate. The ends of the piston rods of the holding cylinders are all fixed to a pressing plate. Upper molds are fixed at positions corresponding to the lower molds on the pressing plate. Annular pressing blocks are further fixed on the upper molds. The panel with glue applied for the screen to be pressed is placed in the placement groove formed by the fixing bars, and the screen is placed on each panel. The holding cylinders are started. The piston rods on the holding cylinders extend. The pressing plate descends, and the upper mold descends. After the pressing block contacts the screen, the screen is pressed onto the panel. After the screen is pressed for a period of time, the pressing is completed. The holding cylinders are started again. The piston rods on the holding cylinders shorten. The pressing plate ascends, and the upper mold separates from the screen. The lifting cylinders are started. The piston rods on the lifting cylinders extend. The lower mold ascends. After the lower mold ascends above the fixing groove, the panel with the pressed screen is taken off the lower mold. And during pressing, the positioning block and the positioning groove are assembled into a plane, and the limiting block and the limiting groove are assembled into a plane, which is convenient for screen pressing. After pressing is completed, the lower mold ascends above the fixing groove, the limiting block separates from the limiting groove, and the positioning block separates from the positioning groove. It is convenient to take off the pressed screen from the position of the positioning groove or the limiting groove. This device can perform pressing and holding operations on multiple screens at one time, and can take off the pressed screens from the position of the positioning groove or the limiting groove, greatly improving the pressing efficiency of the screens.

[0007] Preferably, a lifting plate is arranged below each lower mold. The ends of the piston rods of the lifting cylinders are all fixed to the corresponding lifting plates. A plurality of positioning tubes are further fixed on the lifting plates. Positioning rods corresponding to the positioning tubes are fixed at corresponding positions on the lower mold. The ends of the positioning rods are arranged in the positioning tubes and are slidably connected to the positioning tubes. A plurality of springs are further fixed between the lifting plate and the lower mold. After the piston rods on the lifting cylinders shorten, the lower mold reaches the position of the supporting block, and the smooth ascending and descending of the lower mold are realized through the cooperation of the positioning rods and the positioning tubes.

[0008] Preferably, a plurality of air vent holes penetrating the upper mold are further arranged on the upper mold inside the pressing block. By arranging the air vent holes, it is convenient to discharge the air at the position of the pressing block, avoiding that after the pressing block contacts the screen, the pressing block is extruded, resulting in a large air pressure inside the pressing block and impacting the screen, causing the screen to shift.

[0009] Preferably, a plurality of support rods are fixed on the tabletop, and sliding sleeves are fixed at positions corresponding to the support rods on the pressing plate. The support rods pass through the sliding sleeves at corresponding positions and are slidably connected to the sliding sleeves.

[0010] The present invention has the following advantages compared with the existing technology:

[0011] This device can perform pressure holding operations on multiple screens at one time, and the pressed screens can be removed from the positioning grooves or limiting grooves, greatly improving the pressing efficiency of the screens. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following further details the specific embodiments of the present invention with reference to the accompanying drawings, wherein:

[0013] Figure 1 is a schematic structural diagram of the present invention;

[0014] Figure 2 is a schematic structural diagram of another angle of the present invention;

[0015] Figure 3 is Figure 2 an enlarged view of part A in

[0016] In the figure: 1, tabletop; 2, support rod; 3, top plate; 4, pressure holding cylinder; 5, pressing plate; 6, upper die; 7, pressing block; 8, ventilation hole; 9, fixing groove; 10, lower die; 11, fixing strip; 12, positioning groove; 13, positioning block; 14, limiting groove; 15, limiting block; 16, jacking cylinder; 17, jacking plate; 18, positioning tube; 19, positioning rod; 20, spring; 21, support block; 22, frame; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following details the embodiments of the present invention with reference to the accompanying drawings:

[0018] Embodiment 1:

[0019] As Figures 1 to 3As shown in the figure, this embodiment discloses a screen pressing and pressure-holding device, which includes a table 1 fixed on a frame 22. A plurality of pressing modules are arranged on the table 1. Each pressing module includes a fixing groove 9 arranged on the table 1. A lower die 10 is arranged at the position of each fixing groove 9. A plurality of fixing bars 11 are fixed on the lower die 10. Positioning grooves 12 penetrating the lower die 10 are symmetrically arranged on both sides of the lower die 10. A positioning block 13 cooperating with the positioning groove 12 is fixed on the table 1. A plurality of limiting grooves 14 penetrating the lower die 10 are also arranged on the lower die 10. Limiting blocks 15 corresponding to the limiting grooves 14 are fixed at corresponding positions on the table 1. A plurality of supporting blocks 21 are fixed in the fixing groove 9 below the lower die 10. Lifting cylinders 16 are fixed on the frame 22 below the lower die 10. A top plate 3 is fixed above the table 1. A plurality of pressure-holding cylinders 4 are fixed on the top plate 3. The ends of the piston rods of the pressure-holding cylinders 4 are all fixed to a pressing plate 5. Upper dies 6 are fixed at positions corresponding to the lower die 10 on the pressing plate 5. An annular pressing block 7 is also fixed on the upper die 6. Place the panel with glue applied for the screen to be pressed in the placement groove formed by the fixing bars 11, and place the screen on each panel. The pressure-holding cylinder 4 is started. The piston rod on the pressure-holding cylinder 4 extends, the pressing plate 5 descends, the upper die 6 descends. After the pressing block 7 contacts the screen, the screen is pressed on the panel. After the screen is pressed for a period of time, the pressure-holding is completed. The pressure-holding cylinder 4 is started. The piston rod on the pressure-holding cylinder 4 shortens, the pressing plate 5 rises, and the upper die 6 separates from the screen. The lifting cylinder 16 is started. The piston rod on the lifting cylinder 16 extends, the lower die 10 rises. After the lower die 10 rises above the fixing groove 9, take off the panel with the pressed screen from the lower die 10. And when pressing, the positioning block 13 and the positioning groove 12 are assembled into a plane, and the limiting block 15 and the limiting groove 14 are assembled into a plane, which is convenient for screen pressing. After the pressing is completed, the lower die 10 rises above the fixing groove 9, the limiting block 15 separates from the limiting groove 14, and the positioning block 13 separates from the positioning groove 12. It is convenient to take off the pressed screen from the position of the positioning groove 12 or the limiting groove 14. This device can perform pressure-holding operations on multiple screens at a time, and can take off the pressed screens from the position of the positioning groove 12 or the limiting groove 14, greatly improving the pressing efficiency of the screens.

[0020] Wherein, lifting plates 17 are arranged below the lower die 10. The ends of the piston rods of the lifting cylinders 16 are all fixed to the corresponding lifting plates 17. A plurality of positioning tubes 18 are also fixed on the lifting plates 17. Positioning rods 19 are fixed at positions corresponding to the positioning tubes 18 on the lower die 10. The ends of the positioning rods 19 are arranged in the positioning tubes 18 and are slidably connected with the positioning tubes 18. A plurality of springs 20 are also fixed between the lifting plates 17 and the lower die 10. After the piston rods on the lifting cylinders 16 shorten, the lower die 10 reaches the position of the supporting blocks 21, and the smooth rising and falling of the lower die 10 are realized through the cooperation of the positioning rods 19 and the positioning tubes 18.

[0021] Among them, a plurality of support rods 2 are also fixed on the tabletop 1, and sliding sleeves are fixed at positions corresponding to the support rods 2 on the pressing plate 5. The support rods 2 pass through the sliding sleeves at corresponding positions and are slidably connected to the sliding sleeves.

[0022] Embodiment 2:

[0023] This embodiment discloses a screen pressing and pressure maintaining device. On the basis of the structure and principle of Embodiment 1, a plurality of air vent holes 8 penetrating through the upper die 6 are further provided on the upper die 6 inside the pressing block 7. By providing the air vent holes 8, it is convenient to discharge the air at the position of the pressing block 7, avoiding that after the pressing block 7 contacts the screen, the pressing block 7 is extruded, resulting in a large air pressure in the pressing block 7 that impacts the screen and causes the screen to shift.

[0024] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, various changes, modifications, substitutions, and variations can be made to these embodiments, and these changes, modifications, substitutions, and variations should also be regarded as the protection scope of the present invention.

Claims

1. A screen pressing and pressure-maintaining device, comprising a table fixed on a frame, characterized in that: The table is provided with multiple pressing modules, and the pressing module includes a fixing groove arranged on the table, and the fixing groove position is provided with a lower mold, and the lower mold is fixed with multiple fixing strips, and positioning grooves penetrating the lower mold are symmetrically provided on both sides of the lower mold, and a positioning block used in conjunction with the positioning groove is fixed on the table, and the lower mold is also provided with multiple limiting grooves penetrating the lower mold, and the limiting blocks are fixed at the positions corresponding to the limiting grooves on the table, and multiple supporting blocks are fixed in the fixing grooves below the lower mold, and a lifting cylinder is fixed on the frame below the lower mold, and a top plate is also fixed above the table, and multiple pressure-maintaining cylinders are fixed on the top plate, and the piston rod ends of the pressure-maintaining cylinders are fixed to the pressing plate, and the upper mold is fixed at the corresponding positions of the pressing plate and the lower mold, and an annular pressing block is also fixed on the upper mold.

2. The screen pressing and maintaining pressure device according to claim 1, characterized in that: A lifting plate is arranged under the lower mold, and the ends of the piston rods of the lifting cylinders are fixed to the lifting plates at corresponding positions. A plurality of positioning tubes are also fixed to the lifting plates. Positioning rods are fixed to the corresponding positions of the positioning tubes on the lower mold, and the ends of the positioning rods are arranged in the positioning tubes and are slidably connected to the positioning tubes. A plurality of springs are also fixed between the lifting plate and the lower mold.

3. The screen pressing and maintaining pressure device according to claim 1, characterized in that: The upper die inside the pressing block is also provided with a plurality of air holes penetrating the upper die.

4. The screen pressing and maintaining pressure device according to claim 1, characterized in that: A plurality of support rods are fixed on the table top, and sliding sleeves are fixed at positions on the pressure plate corresponding to the support rods. The support rods pass through the sliding sleeves at corresponding positions and are slidably connected to the sliding sleeves.

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