Hot pressing mechanism for liquid crystal display screen production

Abstract

The utility model relates to a liquid crystal display screen production hot pressing mechanism which comprises a conveying belt arranged between two sets of racks, a hot pressing plate is arranged above the conveying belt, a limiting mechanism corresponding to the hot pressing plate is arranged at the top of the conveying belt, and a top plate located between a downstream line and a countercurrent line of the conveying belt is further arranged between the two sets of racks. The top plate and the hot pressing plate are driven by a driving mechanism; the driving mechanism comprises a fixing frame, a motor I is arranged on the fixing frame, a screw rod I is arranged on the motor I, a screw pipe I connected with the hot pressing plate is in threaded connection with the screw rod I, the screw rod I is connected with a transmission screw rod on the outer side of the machine frame through a transmission belt I, and the top end of the transmission screw rod is movably fixed to the fixing frame. The transmission lead screw is connected with a screw pipe II below the top plate through a transmission belt II, a screw rod II connected with the bottom of the top plate is arranged in the screw pipe II, and a connecting plate for movably fixing the screw pipe II is arranged between the two sets of machine frames. The device is simple in structure and convenient to use.

Description

Technical Field

[0001] This invention relates to the field of display screen processing, and in particular to a hot pressing mechanism for producing liquid crystal displays. Background Technology

[0002] LCD screens are popular with customers due to their low energy consumption and good display effect, and are widely used in mobile phones, televisions and small home appliances. In the production of LCD screens, IC chips need to be pressed and fixed onto the display screen.

[0003] Specifically, a hot pressing mechanism for LCD screen production, patent number CN218886342U, is used to solve the technical problem of LCD screens easily shifting in a fully automatic hot pressing device for LCD screen production, patent number CN211180462U. However, it still has the following defects in actual use: when the hot pressing plate presses the screen, the soft material of the conveyor belt makes it unable to support the screen well, thus affecting the hot pressing effect. Even if the conveyor belt is supported by the processing table to improve its strength, the conveyor belt needs to slide over the top surface of the processing table for a long time. Firstly, it is easy to cause long-term friction between the two and damage, requiring frequent replacement. Secondly, the long-term large-area intense friction between the two also affects the movement of the conveyor belt. Summary of the Invention

[0004] The purpose of this invention is to provide a hot pressing mechanism for manufacturing liquid crystal displays.

[0005] The technical problem of this invention is mainly solved by the following technical solution:

[0006] A hot pressing mechanism for producing liquid crystal displays includes two sets of frames, a conveyor belt is arranged between the two sets of frames, and transmission rollers supporting the conveyor belt are evenly arranged between the two sets of frames. A hot pressing plate that can move up and down is also arranged directly above the conveyor belt.

[0007] The top of the conveyor belt is provided with a limiting mechanism corresponding to the hot press plate. A top plate is also provided between the two sets of frames, located between the upstream and downstream lines of the conveyor belt. The top plate and the hot press plate are driven by a driving mechanism.

[0008] The drive mechanism includes a fixed frame, on which a motor I is mounted. A screw I is mounted on the output shaft of the motor I. A threaded tube I connected to a hot press plate is screwed onto the screw I. The top of the hot press plate is connected to the fixed frame via a telescopic rod. The screw I is connected to a transmission screw on the outside of the frame via a transmission belt I. The top of the transmission screw is movably fixed on the fixed frame. The transmission screw is connected to a threaded tube II below the top plate via a transmission belt II. A screw II connected to the bottom of the top plate is installed inside the threaded tube II. A connecting plate that movably fixes the threaded tube II is provided between the two sets of frames. A vertical rod penetrating the connecting plate is provided on the top plate.

[0009] Preferably, the limiting mechanism includes push plates located on both sides of the top of the conveyor belt. The back ends of both ends of the push plates are connected to the inner wall of the corresponding frame via elastic bands. A strip plate is also provided on the top of the push plate. A fixing plate corresponding to the strip plate is provided on the top of the frame. A sliding rod and a positive and negative screw rod are provided between the two sets of fixing plates, and the positive and negative screw rods are driven by motor II. The strip plate is provided with holes for screwing the positive and negative screw rods and sliding holes for the sliding rod to pass through. The positive and negative screw rods and the sliding rod are located at the front and rear ends of the push plate, respectively. The hot press plate is located directly above the two sets of push plates and the positive and negative screw rods and sliding rods.

[0010] Preferably, the top plate is offset from the drive rollers used to support the conveyor belt's flow path, the top plate is directly opposite the hot press plate, and a support plate for supporting the end of the top plate is provided on the inner side wall of the frame, with the vertical rod passing through holes in the support plate.

[0011] Preferably, pulleys I for fixing the transmission belt I are provided on both the screw I above the solenoid I and the top of the transmission lead screw, and a sliding channel I for the transmission belt I to pass through is provided on the side wall of the fixing frame.

[0012] Preferably, both the bottom end of the solenoid II and the transmission screw are provided with pulleys II for fixing the transmission belt II, and a set of frames is provided with sliding channels II for the transmission belt II to pass through.

[0013] Preferably, the solenoid II is fixed to the connecting plate by bearing I, and a boss for fixing the transmission screw is provided on the outside of the frame. The boss and the fixed frame are provided with bearing II for fixing the transmission screw.

[0014] The beneficial effects of this invention are as follows: When the driving mechanism drives the hot press plate to move down and contact the top surface of the display screen, the driving mechanism also simultaneously drives the top plate to contact the bottom surface of the conveyor belt along the flow line to support and fix the conveyor belt and the display screen. Then, the distance between the hot press plate and the top plate is reduced to achieve better hot pressing of the display screen, thereby improving the hot pressing effect. After the processing is completed, the driving mechanism simultaneously drives the hot press plate to reset upward and drives the top plate to reset downward in preparation for the next hot pressing operation. At this time, the top plate separates from the bottom of the conveyor belt along the flow line, so that it will not affect the normal flow of the conveyor belt. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is a top view of the limiting mechanism in this invention.

[0018] In the diagram: 1. Frame, 2. Conveyor belt, 3. Drive roller, 4. Hot press plate, 5. Limiting mechanism, 51. Push plate, 52. Elastic belt, 53. Strip plate, 54. Fixed plate, 55. Slide rod, 56. Positive and negative lead screws, 57. Motor II, 6. Top plate, 7. Drive mechanism, 71. Fixed frame, 72. Motor I, 73. Screw I, 74. Screw tube I, 75. Telescopic rod, 76. Drive screw, 77. Drive belt I, 78. Drive belt II, 79. Screw tube II, 710. Screw II, 711. Connecting plate, 712. Vertical rod, 8. Support plate, 9. Boss. Detailed Implementation

[0019] The following examples, in conjunction with the appendix, illustrate the concepts. Figure 1-3 The technical solution of the present invention will be further described in detail below.

[0020] A hot pressing mechanism for producing liquid crystal displays includes two sets of frames 1, wherein a conveyor belt 2 is arranged between the two sets of frames 1, and transmission rollers 3 that support the conveyor belt 2 along the flow line are also evenly arranged between the two sets of frames 1. A hot pressing plate 4 that can move up and down is also arranged directly above the conveyor belt 2.

[0021] The top of the conveyor belt 2 is provided with a limiting mechanism 5 corresponding to the hot press plate 4. A top plate 6 is also provided between the two sets of frames 1, located between the forward and reverse flow lines of the conveyor belt 2. The top plate 6 and the hot press plate 4 are driven by a driving mechanism 7.

[0022] The drive mechanism 7 includes a fixed frame 71, on which a motor I72 is mounted. A screw I73 is mounted on the output shaft of the motor I72. A screw tube I74, which is connected to the hot press plate 4, is screwed onto the screw I73. The top of the hot press plate 4 is connected to the fixed frame 71 via a telescopic rod 75. The screw I73 is connected to a transmission lead screw 76 on the outside of the frame 1 via a transmission belt I77. The top end of the transmission lead screw 76 is movably fixed on the fixed frame 71. The transmission lead screw 76 is connected to a screw tube II79 below the top plate 6 via a transmission belt II78. A screw II710, which is connected to the bottom of the top plate 6, is provided inside the screw tube II79. A connecting plate 711, which movably fixes the screw tube II79, is provided between the two sets of frames 1. A vertical rod 712, which penetrates the connecting plate 711, is provided on the top plate 6.

[0023] The limiting mechanism 5 includes push plates 51 located on both sides of the top of the conveyor belt 2. The back ends of both ends of the push plates 51 are connected to the inner wall of the corresponding frame 1 through elastic bands 52. A strip plate 53 is also provided on the top of the push plate 51. A fixing plate 54 corresponding to the strip plate 52 is provided on the top of the frame 1. A slide rod 55 and a forward and reverse screw 56 are provided between the two sets of fixing plates 54, which pass through the strip plate 53. The forward and reverse screw 56 is driven by a motor II 57. The strip plate 52 is provided with holes for screwing the forward and reverse screw 56 and sliding holes for the slide rod 55 to pass through. The forward and reverse screw 56 and the slide rod 55 are located at the front and rear ends of the push plate 51, respectively. The hot press plate 4 is located directly above the two sets of push plates 51 and the forward and reverse screw 56 and slide rod 55.

[0024] In this embodiment, the top plate 6 is offset from the drive roller used to support the conveyor belt 2 in the same direction. The top plate 6 is directly opposite the hot press plate 4. A support plate 8 is provided on the inner side wall of the frame 1 to support the end of the top plate 6. The vertical rod 712 passes through the hole on the support plate 8.

[0025] In this embodiment, pulleys I for fixing the transmission belt I77 are provided on the screw I73 above the solenoid I74 and at the top of the transmission lead screw 76. A sliding channel I for the transmission belt I77 to pass through is provided on the side wall of the fixing frame 71.

[0026] In this embodiment, both the bottom end of the solenoid II 710 and the transmission screw 76 are provided with pulleys II for fixing the transmission belt II 78, and a set of frames 1 is provided with sliding channels II for the transmission belt II 78 to pass through.

[0027] In this embodiment, the solenoid II 710 is fixed to the connecting plate 711 by the bearing I. The outer side of the frame 1 is provided with a boss 9 for fixing the transmission screw 76. The boss 9 and the fixed frame 71 are provided with the bearing II for fixing the transmission screw 76.

[0028] The method of using this invention: When the conveyor belt 2 transports the display screen to the position directly below the hot press plate 4, the motor II 57 rotates in the screw hole in the strip plate 53 through the positive and negative lead screws 56 to drive the two sets of push plates 51 to move towards the middle of the conveyor belt 2, thereby pushing the display screen to the middle of the conveyor belt 2 to face the hot press plate 4. When the push plate 51 moves, it will drive the sliding hole on the strip plate 53 to move on the slide rod 55. The slide rod 55 abuts against the side wall of the sliding hole to prevent the push plate 51 and the positive and negative lead screws 56 from rotating together. At this time, the display screen is located directly below the hot press plate 4, and the hot press plate 4 is located directly above the two sets of push plates 51, the positive and negative lead screws 56 and the slide rod 55. This realizes that the position of the display screen is corrected by simultaneously driving the two sets of push plates 51 to move through one set of motor II 57.

[0029] During the hot pressing process of the display screen, motor I72 drives screw I73 to rotate within solenoid I74, which in turn drives solenoid I74 to move hot pressing plate 4 downwards to contact the top surface of the display screen, thus performing hot pressing. At this time, the downward-moving hot pressing plate 4 causes multiple sets of telescopic rods 75 to stretch, preventing the hot pressing plate 4 and solenoid I74 from rotating together with screw I73. Meanwhile, screw I73 also drives transmission screw 76 to rotate via pulley I and transmission belt I77. Transmission screw 76 then rotates via transmission belt II78 and pulley II. The drive tube II79 rotates on the bearing I and the screw II710, so that the screw II710 drives the top plate 6 to move upward and contact the bottom of the conveyor belt 2 along the flow line, thereby supporting the conveyor belt 2 and the display screen above it, so that the hot press plate 4 can smoothly perform hot pressing on the display screen to improve the hot pressing effect of the display screen. When the top plate 6 moves upward, it will drive the vertical rod 712 to slide upward in the hole on the support plate 8 and the connecting plate 711. The top plate 6 and the screw I710I and the drive tube II79 rotate together by abutting the vertical rod 712 through the side wall of the hole.

[0030] During the above process, when the drive mechanism 7 drives the hot press plate 4 to move down and contact the top surface of the display screen, the drive mechanism 7 also drives the top plate 6 to contact the bottom surface of the conveyor belt 2 along the flow line to support and fix the conveyor belt 2 and the display screen. Then, the distance between the hot press plate 4 and the top plate 6 is reduced to achieve better hot pressing of the display screen, thereby improving the hot pressing effect. After the processing is completed, the drive mechanism 7 simultaneously drives the hot press plate 4 to reset upward and drives the top plate 6 to reset downward in preparation for the next hot pressing operation. At this time, the top plate 6 separates from the bottom of the conveyor belt 2 along the flow line, so that it will not affect the normal flow of the conveyor belt 2, and there will be no severe friction between the two.

[0031] The present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A hot pressing mechanism for manufacturing liquid crystal displays, comprising two sets of frames, wherein a conveyor belt is arranged between the two sets of frames, and drive rollers supporting the conveyor belt are evenly arranged between the two sets of frames, and a hot pressing plate that can move up and down is arranged directly above the conveyor belt, characterized in that: The top of the conveyor belt is provided with a limiting mechanism corresponding to the hot press plate. A top plate is also provided between the two sets of frames, located between the forward and reverse flow lines of the conveyor belt. The top plate and the hot press plate are driven by a driving mechanism. The drive mechanism includes a fixed frame, on which a motor I is mounted. A screw I is mounted on the output shaft of the motor I. A threaded tube I connected to a hot press plate is screwed onto the screw I. The top of the hot press plate is connected to the fixed frame via a telescopic rod. The screw I is connected to a transmission screw on the outside of the frame via a transmission belt I. The top of the transmission screw is movably fixed on the fixed frame. The transmission screw is connected to a threaded tube II below the top plate via a transmission belt II. A screw II connected to the bottom of the top plate is installed inside the threaded tube II. A connecting plate that movably fixes the threaded tube II is provided between the two sets of frames. A vertical rod penetrating the connecting plate is provided on the top plate.

2. The hot pressing mechanism for producing a liquid crystal display screen according to claim 1, characterized in that: The limiting mechanism includes push plates located on both sides of the top of the conveyor belt. The back ends of both ends of the push plates are connected to the inner wall of the corresponding frame via elastic bands. A strip plate is also provided on the top of the push plate. A fixing plate corresponding to the strip plate is provided on the top of the frame. A sliding rod and a positive and negative screw rod are provided between the two sets of fixing plates, which pass through the strip plate. The positive and negative screw rods are driven by motor II. The strip plate is provided with holes for screwing the positive and negative screw rods and sliding holes for the sliding rod to pass through. The positive and negative screw rods and the sliding rod are located at the front and rear ends of the push plate, respectively. The hot press plate is located directly above the two sets of push plates and the positive and negative screw rods and sliding rods.

3. The hot pressing mechanism for producing a liquid crystal display screen according to claim 1, characterized in that: The top plate is offset from the drive rollers used to support the conveyor belt. The top plate is directly opposite the hot press plate. A support plate is provided on the inner side wall of the frame to support the end of the top plate. The vertical rod passes through the hole in the support plate.

4. The hot pressing mechanism for producing a liquid crystal display screen according to claim 1, characterized in that: Both the screw I above the solenoid I and the top of the transmission lead screw are provided with pulleys I for fixing the transmission belt I, and the side wall of the fixing frame is provided with a sliding channel I for the transmission belt I to pass through.

5. A hot-pressing mechanism for producing a liquid crystal display screen according to claim 1, characterized in that: Both the bottom end of the solenoid II and the transmission screw are provided with pulleys II for fixing the transmission belt II, and a set of frames is provided with sliding channels II for the transmission belt II to pass through.

6. The hot pressing mechanism for producing a liquid crystal display screen according to claim 1, characterized in that: The solenoid II is fixed to the connecting plate by bearing I. A boss for fixing the transmission screw is provided on the outside of the frame. The boss and the fixed frame are provided with bearing II for fixing the transmission screw.

Images