Automatic stacking device for LCD display production

Abstract

This invention relates to the field of LCD display manufacturing technology, specifically to an automatic stacking device for LCD display production. The device includes a base and a receiving frame. The receiving frame is fixedly installed on the upper surface of the base, and its upper surface is open. A placement plate is horizontally fixedly installed in the middle section inside the receiving frame. By incorporating stacking components and a feeding mechanism, this invention not only reduces impact damage to some displays caused by feeding from a fixed height, but also prevents stacked displays from exceeding the receiving frame and affecting stacking stability. By setting a limiting mechanism one, it simultaneously presses against both sides of the stacking group to prevent some outer frame sides from protruding or shifting during stacking, thus affecting the stacking stability of the upper displays and improving stacking stability. By setting a limiting mechanism two, it simultaneously presses against the front and rear ends of the stacking group to reduce the deviation of the front and rear ends of the stacking group from protruding displays that affect the stacking stability of the upper displays, further improving display stacking efficiency.

Description

Technical Field

[0001] This invention relates to the field of LCD display manufacturing technology, specifically to an automatic stacking device for LCD display manufacturing. Background Technology

[0002] A liquid crystal display (LCD) is a flat, ultra-thin display device composed of a certain number of color or monochrome pixels, placed in front of a light source or reflector. The production process involves assembling various components from different production lines. After each type of component is produced, it is transported to a designated workshop for assembly, ultimately producing a complete LCD display. However, the assembled display still needs to be secured with foam pallets and packaged in cardboard boxes before it can be stacked, transported, and finally sold.

[0003] During the stacking process of packaged displays, the stacking platform of existing stacking equipment has a fixed height. The first display to be unloaded has the greatest descent height, which can easily cause some displays to be damaged by impact during unloading, thus affecting the stacking quality. Furthermore, as the number of stacked objects increases and the stacking height increases, the stability of the stacking group will deteriorate. In particular, during the stacking process, some displays are prone to shifting, that is, any part of the front, back, and ends of a single packaged display may protrude or shift. This can easily lead to a decrease in the stability of the upper stacked materials and the overall stacking group, thereby reducing stacking efficiency. Summary of the Invention

[0004] The purpose of this invention is to reduce the impact damage to some displays caused by fixed-height unloading by setting up stacking components and unloading mechanisms, and to reduce the stacked displays from exceeding the receiving frame and affecting stacking stability. By setting up limiting mechanism one, both sides of the stacking group are simultaneously pressed to prevent some outer frame sides from protruding or shifting during stacking, thus affecting the stacking stability of the upper display and improving stacking stability. By setting up limiting mechanism two, the front and rear ends of the stacking group are simultaneously pressed to reduce the deviation of the front and rear ends of the stacking group from protruding displays that affect the stacking stability of the upper display and further improve the stacking efficiency of the display.

[0005] The objective of this invention can be achieved through the following technical solution: An automatic stacking device for LCD display production includes a base and a receiving frame. The receiving frame is fixedly installed on the upper surface of the base, and the upper surface of the receiving frame has an open structure. A placement plate is horizontally fixedly installed in the middle section inside the receiving frame, and the two ends of the placement plate are respectively fixedly connected to the inner walls of the two sides of the receiving frame. A stacking component is provided at the center of the upper end of the placement plate. A concave limiting frame one and a limiting frame two are fixedly installed on the outside of the base on both sides of the receiving frame, and a feeding mechanism is provided between the limiting frame one and the limiting frame two. A limiting mechanism one is provided inside the receiving frame on both sides of the stacking component, and a limiting mechanism two is provided on one side of the upper surface of the placement plate.

[0006] The stacking component includes a base plate, which is located at the lower end of the placement plate. A cylinder is provided between the base plate and the placement plate. Connecting rods are fixedly installed at four corners on the upper surface of the base plate. A horizontal plate is fixedly installed between two adjacent connecting rods. There are two sets of horizontal plates, and several sets of long plates are provided between the two sets of horizontal plates.

[0007] The feeding mechanism includes a guide plate, which is hinged inside the first limiting frame. A rectangular feeding groove is provided at the middle section of the upper surface of the guide plate. One end of the guide plate extends into the second limiting frame and is hinged to a concave movable frame. The front and rear ends of the guide plate are respectively hinged to the top of the front and rear inner walls of the movable frame. The movable frame is located at the upper middle part inside the second limiting frame. A circular retaining ring is fixedly installed at the bottom of the front and rear end faces of the movable frame. The two sets of circular retaining rings are slidably connected to the top of the inner end of the sliding groove opened near the middle section of the front and rear end faces of the second limiting frame. A gravity spring damper is provided between the bottom of the circular retaining ring and the bottom inner wall of the sliding groove.

[0008] Furthermore, a limit rod is fixedly installed near the bottom inner wall of the movable frame, and a stop frame is provided at the upper end of the limit rod. The bottom surface of the stop frame is beveled, and its higher end presses against the upper end of the limit rod. A push rod is provided at the center of the side of the stop frame away from the limit rod, and a cylinder is connected to the end of the push rod away from the stop frame. The cylinder is fixedly installed on one side of the upper end of the base through a suitable base.

[0009] Furthermore, the two sets of limiting mechanisms are mirror-symmetrical about the central axis of the receiving frame, and each limiting mechanism includes a vertical frame. The vertical frame is fixedly installed inside the receiving frame at the rear end of the placement plate. A horizontal frame is fixedly installed on the upper end of the vertical frame and is connected to the interior of the vertical frame. Long grooves are provided in the middle of the front and rear ends of the horizontal frame. A double-axis retaining ring is provided on one side between the two sets of long grooves. The front and rear ends of the double-axis retaining ring extend to the outside of the long groove. A gear is fixedly installed in the middle of the double-axis retaining ring. A stop rod is rotatably connected to the front end of the double-axis retaining ring and the front end of the stop rod extends to the upper end of the placement plate. Bow-shaped stop bars are fixedly installed at the front and rear ends of the opposite sides of the two sets of stop rods.

[0010] Furthermore, a push block is slidably connected inside the upright frame, and the upper end face of the push block is set with a bevel and extends into the interior of the horizontal frame. A groove is opened at the top bevel of the push block, and several sets of tooth grooves are arranged at equal intervals inside the groove. The gear is engaged at the top of the groove and meshes with the tooth groove. A circular retaining ring is fixedly installed at the upper end of the front end face of the push block, and the circular retaining ring extends into the groove opened in the middle section of the front end face of the upright frame.

[0011] Furthermore, a second horizontal frame is connected between the two sets of upright frames near the bottom. A motor is located at the center of the second horizontal frame, and a disc is fixedly installed at the front end of the fourth set of second horizontal frames at the bearing of the motor. A lifting rod is hinged to the front end of the disc near the bottom center, and a horizontal bar is hinged to the top of the lifting rod. The two ends of the horizontal bar are fixedly connected to two sets of second circular retaining rings.

[0012] Furthermore, the limiting mechanism two includes a motor two, which is located on the inner wall of one side of the receiving frame at the upper end of the placement plate. A worm gear is provided at the output end of the motor two, and turbines are respectively provided at the front and rear ends of the worm gear, and the turbines mesh with the worm gear. The centers of the two sets of turbines are respectively rotatably connected to the top surface of the placement plate through a rotating shaft. A clamping plate is provided on the side of the two sets of turbines away from the worm gear. A movable groove is opened in the middle section of the side of the two sets of clamping plates away from each other, and a slider slides in the middle section of the movable groove. The slider and the corresponding inner wall of the receiving frame are hinged together by a hinge rod. Each set of hinge rods is formed by hinged two sets of rods.

[0013] Furthermore, inclined guide plates are fixedly installed at one end of each of the two sets of clamping plates, and several sets of toothed grooves are equally spaced at the middle section opposite to each other of the two sets of guide plates. The toothed grooves mesh with the turbine. Horizontal grooves are opened inside the two sets of clamping plates near the upper end, and the two sets of abutment rods pass through the interior of the horizontal grooves.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention, through the setting of a stacking component and a feeding mechanism, uses cylinder two to drive the push rod and the abutment frame to achieve lateral reciprocating motion. The inclined surface at the bottom of the abutment frame synchronously presses down on the limiting rod, the movable frame, and one end of the guide plate. The display screen falling into the guide plate slides to the lower end of the guide plate and falls into the feeding trough during the sliding process, and then falls into the stacking component. After a single display screen is fed, the push rod pulls the abutment frame to reset, the movable frame loses the downward pressure and resets to a flat state. The intermittent lifting of the guide plate achieves intermittent feeding and stacking of the display screens. As the number of stacked display screens continues to increase, the output shaft of cylinder one pushes the base plate downward. The base plate pulls the four sets of connecting rods, the stacking platform, and the stacked display screens to sink downward synchronously, so as to keep the display screen on the top layer of the stacked display screen and the receiving frame opening on the same plane. By continuously changing the feeding height, it can not only reduce the impact damage to some display screens caused by feeding at a fixed height, but also reduce the stacked display screens from exceeding the receiving frame and affecting the stacking stability.

[0016] 2. This invention uses a limiting mechanism, a motor to drive the disk to rotate, and a lifting rod to perform circular motion. When the bottom of the lifting rod rotates to the top of the front end of the disk, the lifting rod pushes the crossbar, the circular retaining ring, and the push block upwards. The inclined surface of the sloping groove presses against the gear, the double-shaft retaining ring, and the abutment rod to one side. At the same time, the gear slides from the higher end to the lower end inside the sloping groove. The gear meshes with the tooth groove to achieve the rotation of the gear. The rotation of the gear can accelerate the movement speed of the abutment rod to one side of the long groove. The two sets of abutment rods move relative to each other at the same time, and the bow-shaped abutment bars on their opposing surfaces work together to press against the two sides of the stacked display screen group synchronously. This prevents the outer frame sides from protruding or shifting during stacking, which would affect the stacking stability of the upper display screen and improve the stability of the stacked materials.

[0017] 3. This invention uses a second limiting mechanism and a second motor to drive a worm gear to rotate. The worm gear drives two adjacent sets of turbines to rotate simultaneously, and the two sets of turbines mesh with the toothed grooves on the guide plates. This allows the two sets of guide plates and the associated clamping plates to move synchronously and parallel. The turbines slide from the connection between the clamping plates and the guide plates to the other side of the guide plates. The distance between the front and rear sets of clamping plates decreases and they move closer to the front and rear ends of the stacked components. The distance between the clamping plates and the inner wall of the corresponding receiving frame increases, forcing the hinge rod to straighten. The slider moves horizontally inside the movable groove. At this time, the two sets of clamping plates that are close to each other simultaneously press against the front and rear ends of the stacked display screens at the stacked components. This reduces the offset of the front and rear ends of the stacked display screens, which could affect the stability of the upper display screen stacking and further improve the stacking efficiency of the display screens. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a three-dimensional schematic diagram of the combination of the base and receiving frame structure of the present invention;

[0021] Figure 3 This is a three-dimensional schematic diagram of the combination of the storage plate and the stacking component of the present invention;

[0022] Figure 4 This is a plan view of a portion of the material feeding mechanism of the present invention;

[0023] Figure 5 For the present invention Figure 1 Enlarged view of details in area A;

[0024] Figure 6 This is a top view of the combined base and receiving frame structure of the present invention;

[0025] Figure 7 This is a cross-sectional view of the limiting mechanism of the present invention;

[0026] Figure 8 This is a three-dimensional schematic diagram of the limiting mechanism of the present invention;

[0027] Figure 9 This is a perspective view of the push block, double-axis retaining ring, and abutment rod of the present invention.

[0028] Figure 10 This is a perspective view of the two-part structure of the limiting mechanism of the present invention.

[0029] In the diagram: 1. Base; 2. Receiving frame; 3. Storage plate; 4. Stacking component; 41. Base plate; 42. Cylinder 1; 43. Connecting rod; 44. Horizontal plate; 45. Long plate; 5. Limiting frame 1; 6. Limiting frame 2; 7. Unloading mechanism; 71. Guide plate; 72. Unloading chute; 73. Movable frame; 74. Circular retaining ring 1; 75. Slide groove 1; 76. Gravity spring damper; 77. Limiting rod; 78. Abutment frame; 79. Push rod; 710. Cylinder 2; 8. Limiting mechanism 1; 81. Vertical frame; 82. Horizontal frame 1; 83. 84. Long groove; 85. Double-shaft retaining ring; 86. Gear; 87. Abutment rod; 88. Bow-shaped abutment bar; 89. Push block; 80. Inclined groove; 811. Tooth groove one; 812. Round retaining ring two; 813. Slide groove two; 814. Horizontal frame two; 815. Motor one; 816. Disc; 817. Lifting rod; 818. Horizontal bar; 91. Limiting mechanism two; 92. Motor two; 93. Worm gear; 94. Turbine; 95. Clamping plate; 96. Movable groove; 97. Slider; 98. Guide plate; 99. Tooth groove two; 910. Horizontal groove. Detailed Implementation

[0030] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1:

[0032] Please see Figure 1-10 As shown, an automatic stacking device for LCD display production includes a base 1 and a receiving frame 2. The receiving frame 2 is fixedly installed on the upper surface of the base 1, and the upper surface of the receiving frame 2 has an open structure. A placement plate 3 is horizontally fixedly installed in the middle section inside the receiving frame 2, and the two ends of the placement plate 3 are respectively fixedly connected to the inner walls on both sides of the receiving frame 2. A stacking component 4 is provided at the upper center of the placement plate 3. The stacking component 4 includes a base plate 41, which is located at the lower end of the placement plate 3. A cylinder 42 is provided between the base plate 41 and the placement plate 3. Connecting rods 43 are fixedly installed at four corners on the upper surface of the base plate 41. A horizontal plate 44 is fixedly installed between two adjacent connecting rods 43. There are two sets of horizontal plates 44, and several sets of long plates 45 are provided between the two sets of horizontal plates 44.

[0033] On the outside of the base 1, on both sides of the receiving frame 2, are fixedly installed concave limiting frames 5 and 6, respectively. A feeding mechanism 7 is provided between the limiting frames 5 and 6. The feeding mechanism 7 includes a guide plate 71, which is hinged through the limiting frame 5. A rectangular feeding groove 72 is provided at the middle of the upper surface of the guide plate 71. One end of the guide plate 71 extends into the limiting frame 6 and is hinged to a concave movable frame 73. The front and rear ends of the guide plate 71 are respectively hinged to the top of the front and rear inner walls of the movable frame 73. The movable frame 73 is located at the upper middle part of the limiting frame 6. Circular retaining rings 74 are fixedly installed at the bottom of the front and rear ends of the movable frame 73. Two sets of circular retaining rings 74 are slidably connected to the top of the sliding grooves 75 opened near the middle section of the front and rear ends of the limiting frame 6. A gravity spring damper 76 is provided between the bottom of the circular retaining rings 74 and the bottom inner wall of the sliding groove 75. A limiting rod 77 is fixedly installed near the bottom inner wall of the movable frame 73. A stop frame 78 is provided at the upper end of the limiting rod 77. The bottom surface of the stop frame 78 is beveled, and its higher end presses against the upper end of the limiting rod 77. A push rod 79 is provided at the center of the side of the stop frame 78 away from the limiting rod 77. A cylinder 710 is connected to the end of the push rod 79 away from the stop frame 78. The cylinder 710 is fixedly installed on the upper side of the base 1 through a suitable base.

[0034] First, the display screen of the packaging is automatically conveyed to one side of the upper surface of the guide plate 71 using an external conveying device. Then, the second cylinder 710 is activated, which drives the push rod 79 and the abutment frame 78 to achieve lateral reciprocating motion. The abutment frame 78 passes through the interior of the movable frame 73 in sequence, and the inclined surface at the bottom of the abutment frame 78 simultaneously presses down the limiting rod 77 and the movable frame 73. Meanwhile, the circular retaining rings 74 at the front and rear ends of the movable frame 73 slide downwards along the inside of the slide groove 75 and press against the gravity spring damper 76 to compress it. As the movable frame 73 is pressed down steadily, it simultaneously pulls one end of the guide plate 71 down, forcing the guide plate 71 to tilt. The display screen falling onto one end of the guide plate 71 slides towards the lower end of the guide plate 71 and falls into the discharge trough 72 during its slide, then into the stacking component 4. After a single display screen is discharged, the push rod 79 pulls the frame 78 back to its original position. The movable frame 73 loses its downward pressure and returns to its original position under the rebound force of the gravity spring damper 76. The guide plate 71 then tends to flatten. In a straight state, this process is repeated, using the intermittent lifting of the guide plate 71 to achieve intermittent feeding and stacking of the display screens. Several sets of display screens are stacked sequentially on the stacking platform formed by the horizontal plate 44 and the long plate 45. As the number of stacked display screens increases, the output shaft of cylinder 42 pushes the base plate 41 downward. The base plate 41 pulls the four sets of connecting rods 43, the stacking platform, and the stacked display screens to sink downward synchronously, so as to keep the display screen on the top layer and the opening of the receiving frame 2 on the same plane. By continuously changing the feeding height, not only can some display screens be reduced from being damaged by impact when feeding at a fixed height, but also the stacked display screens are prevented from exceeding the receiving frame 2, thus affecting the stacking stability of the display screens. After stacking is completed, the output shaft of cylinder 42 pulls the base plate 41 upward. The base plate 41 pushes the four sets of connecting rods 43, the stacking platform, and the stacked display screens upward synchronously until several sets of stacked display screens exceed the top opening of the receiving frame 2, so that the stacked display screens can be removed.

[0035] Example 2:

[0036] Please see Figure 6 - Figure 9As shown, the receiving frame 2 is equipped with limiting mechanisms 8 on both sides of the stacking component 4. The two sets of limiting mechanisms 8 are mirror-symmetrical with respect to the central axis of the receiving frame 2. Each limiting mechanism 8 includes a vertical frame 81, which is fixedly installed inside the receiving frame 2 on one side of the rear end of the placement plate 3. A horizontal frame 82 is fixedly installed on the upper end of the vertical frame 81 and is connected to the interior of the vertical frame 81. Long grooves 83 are opened in the middle of the front and rear ends of the horizontal frame 82. A double-axis retaining ring 84 is provided on one side between the two sets of long grooves 83. The front and rear ends of the double-axis retaining ring 84 extend to the outside of the long grooves 83. A gear 85 is fixedly installed in the middle of the double-axis retaining ring 84. A stop rod 86 is rotatably connected, and the front end of the stop rod 86 extends to the upper end of the shelf 3. The front and rear ends of the two sets of stop rods 86 are fixedly installed with bow-shaped stop bars 87. A push block 88 is slidably connected inside the upright frame 81, and the upper end face of the push block 88 is set with a bevel and extends into the interior of the horizontal frame 82. A groove 89 is opened at the top bevel of the push block 88, and several sets of tooth grooves 810 are evenly arranged inside the groove 89. The gear 85 is engaged at the top end of the groove 89 and meshes with the tooth grooves 810. A circular retaining ring 811 is fixedly installed at the upper end of the front end face of the push block 88, and the circular retaining ring 811 extends into the groove 812 opened in the middle section of the front end face of the upright frame 81. Two sets of upright frames 81 are connected to a horizontal frame 813 near the bottom. A motor 814 is located at the center of the horizontal frame 813. A disc 815 is fixedly installed at the front end of the four sets of horizontal frames 813 at the bearing of the motor 814. A lifting rod 816 is hinged to the front end of the disc 815 near the bottom center. A horizontal bar 817 is hinged to the top of the lifting rod 816. The two ends of the horizontal bar 817 are fixedly connected to two sets of circular retaining rings 811.

[0037] During operation, the motor 814 drives the disc 815 to rotate and the lifting rod 816 to rotate. When the bottom of the lifting rod 816 rotates to the top of the front end of the disc 815, the lifting rod 816 pushes the crossbar 817, the circular retaining ring 811, and the push block 88 upwards. The inclined surface of the groove 89 presses against the gear 85, the double-shaft retaining ring 84, and the abutment rod 86 to one side. Simultaneously, the gear 85 slides from the higher end to the lower end inside the groove 89. During this period, the gear 85 meshes with the tooth groove 810, achieving its own rotation. The rotation of the gear 85 accelerates the movement of the abutment rod 86 towards the long groove 83. The two sets of abutment rods 86 move relative to each other simultaneously, and their opposing arc-shaped abutment bars 87 work together to synchronously press against both sides of the stacked display screen assembly. To prevent the outer frame from protruding or shifting during stacking, thus affecting the stacking stability of the upper display screen, the stacking stability is improved. When the bottom of the lifting rod 816 rotates to the bottom position of the front end of the disc 815, the top of the lifting rod 816 pulls the crossbar 817, the second circular retaining ring 811, and the push block 88 downwards. At this time, the gear 85 slides from the lower end to the higher end inside the inclined groove 89. During this period, the gear 85 meshes with the tooth groove 810 to achieve the reverse rotation of the gear 85. The reverse rotation of the gear 85 can accelerate the return movement speed of the abutment rod 86. The two sets of abutment rods 86 move in opposite directions at the same time, and the bow-shaped abutment bars 87 on their opposite sides move away from each other from the two sides of the stacked display screen group to reduce the obstruction of the subsequent display screens. This process is repeated to speed up the stacking efficiency of the display screens.

[0038] Example 3:

[0039] Please see Figure 6 and Figure 10 As shown, a limiting mechanism 2 9 is provided on one side of the upper surface of the shelf 3. The limiting mechanism 2 9 includes a motor 2 91, which is located on the inner wall of the receiving frame 2 at the upper end of the shelf 3. A worm gear 92 is provided at the output end of the motor 2 91. Turbines 93 are provided at the front and rear ends of the worm gear 92, and the worm gear 93 meshes with the worm gear 92. The centers of the two sets of worm gears 93 are rotatably connected to the top surface of the shelf 3 via rotating shafts. Clamping plates 94 are provided on the side of the two sets of worm gears 93 away from the worm gear 92, and the sides of the two sets of clamping plates 94 away from each other are also provided. Each section has a movable groove 95, and a slider 96 slides inside the movable groove 95 in the middle section. The slider 96 and the inner wall of the corresponding receiving frame 2 are hinged together by a hinge rod 97. Each set of hinge rods 97 is formed by hinged two sets of rods. An inclined guide plate 98 is fixedly installed at one end of each of the two sets of clamping plates 94. Several sets of toothed grooves 99 are equally spaced at the middle section opposite each other of the two sets of guide plates 98. The toothed grooves 99 mesh with the turbine 93. A transverse groove 910 is opened inside the two sets of clamping plates 94 near the upper end. Two sets of abutment rods 86 pass through the transverse groove 910.

[0040] By starting motor 91, the worm gear 92 is driven to rotate, and the worm gear 92 drives the two adjacent sets of turbines 93 to rotate simultaneously. The two sets of turbines 93 mesh with the toothed grooves 99 at the guide plate 98, so as to realize the synchronous parallel movement of the two sets of guide plates 98 and the associated clamping plates 94. The turbines 93 slide from the connection between the clamping plates 94 and the guide plates 98 to the other side of the guide plates 98. At this time, the distance between the front and rear sets of clamping plates 94 decreases and they move closer to the front and rear ends of the stacking component 4, while the distance between the clamping plates 94 and the inner wall of the corresponding receiving frame 2 increases, forcing the hinge rod 97 to straighten. The slider 96 moves within the movable groove 95. The part moves horizontally, and at this time, the two sets of clamping plates 94 that are close to each other simultaneously press against the front and rear ends of the stacked display screens at the four locations of the stacked parts, so as to reduce the offset of the front and rear ends of the stacked display screens and reduce the impact on the stability of the upper display screen stacking, thereby further improving the stacking efficiency of the display screens; after the front and rear ends of the stacked parts are pressed, the motor 2 91 drives the worm gear 92 and the turbine 93 to rotate in the opposite direction. When the turbine 93 is engaged by one end of the guide plate 98, the guide plate 98 and the clamping plate 94 are connected at the connection section, so as to force the distance between the two sets of clamping plates 94 to increase and move away from the stacking area, thereby reducing the obstruction to subsequent material feeding.

[0041] Working principle:

[0042] In use, the packaged display screen is first automatically conveyed to one side of the upper surface of the guide plate 71 using an external conveying device. Then, the second cylinder 710 is activated, which drives the push rod 79 and the abutment frame 78 to achieve lateral reciprocating motion. The abutment frame 78 passes through the interior of the movable frame 73, and the inclined surface at the bottom of the abutment frame 78 simultaneously presses down the limiting rod 77 and the movable frame 73. Meanwhile, the circular retaining rings 74 at the front and rear ends of the movable frame 73 slide downwards along the inside of the slide groove 75 and press against the gravity spring damper 76 to a compressed state. As the movable frame 73 is steadily pressed down, it pulls one end of the guide plate 71 downwards simultaneously, forcing the guide plate 71 to tilt. Thus, the display screen falling into one end of the guide plate 71 is guided downwards. The lower end of the material plate 71 slides and falls into the material trough 72 during the slide, and then falls into the stacking part 4. After a single display screen is unloaded, the push rod 79 pulls the frame 78 to reset. The movable frame 73 loses the downward pressure and resets under the rebound force of the gravity spring damper 76. The guide plate 71 tends to be flat. Several sets of display screens are stacked in sequence on the stacking platform formed by the horizontal plate 44 and the long plate 45. As the number of stacked display screens continues to increase, the output shaft of the cylinder 42 pushes the base plate 41 downward. The base plate 41 pulls the four sets of connecting rods 43, the stacking platform and the stacked display screens to sink down synchronously to keep the display screen on the top layer and the frame opening of the receiving frame 2 on the same plane.

[0043] Secondly, by starting the motor 814, the disk 815 is driven to rotate and the lifting rod 816 is driven to make a circular motion. When the bottom of the lifting rod 816 rotates to the top position of the front end of the disk 815, the lifting rod 816 pushes the crossbar 817, the circular retaining ring 811 and the push block 88 to move upward. The inclined surface of the inclined groove 89 presses the gear 85, the double-shaft retaining ring 84 and the abutment rod 86 to move to one side. At the same time, the gear 85 slides from the higher end to the lower end inside the inclined groove 89. During this period, the gear 85 meshes with the tooth groove 810 to realize the rotation of the gear 85. The rotation and rolling of the gear 85 can accelerate the movement speed of the abutment rod 86 to the side of the long groove 83. The two sets of abutment rods 86 move relative to each other at the same time and use the bow-shaped abutment bars 87 on their opposite sides to press the two sides of the stacked display screen group synchronously to prevent some of the outer frame sides from protruding or shifting during stacking, which would affect the stacking stability of the upper display screen.

[0044] At the same time, motor 91 drives worm 92 to rotate, and worm 92 drives two adjacent sets of turbines 93 to rotate simultaneously. The two sets of turbines 93 mesh with the toothed grooves 99 at the guide plate 98 to achieve synchronous parallel movement of the two sets of guide plates 98 and the associated clamping plates 94. The turbines 93 slide from the connection between the clamping plates 94 and the guide plates 98 to the other side of the guide plates 98. At this time, the distance between the front and rear sets of clamping plates 94 is reduced and they move closer to the front and rear ends of the stacked material 4. The distance between the clamping plates 94 and the inner wall of the corresponding receiving frame 2 is increased, forcing the hinge rod 97 to straighten. The slider 96 moves horizontally inside the movable groove 95. The two sets of clamping plates 94 that are close to each other press against the front and rear ends of the stacked display screens at the stacked material 4 to reduce the offset of the front and rear ends of the stacked display screens and reduce the impact on the stability of the upper display screen stack.

[0045] After stacking, the output shaft of cylinder 42 is used to pull the base plate 41 upward. The base plate 41 pushes the four sets of connecting rods 43, the stacking platform and the stacked display screens upward in sync until several stacked display screens exceed the top opening of the receiving frame 2 so that the stacked display screens can be taken out.

[0046] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic stacking device for LCD display production, characterized in that: The device includes a base (1) and a receiving frame (2). The receiving frame (2) is fixedly installed on the upper surface of the base (1), and the upper surface of the receiving frame (2) is open. A storage plate (3) is horizontally fixedly installed in the middle section of the receiving frame (2), and the two ends of the storage plate (3) are fixedly connected to the inner walls of the two sides of the receiving frame (2). A stacking component (4) is provided at the center of the upper end of the storage plate (3). A concave structure limiting frame one (5) and limiting frame two (6) are fixedly installed on the outside of the base (1) on both sides of the receiving frame (2), and a feeding mechanism (7) is provided between the limiting frame one (5) and the limiting frame two (6). A limiting mechanism one (8) is provided on both sides of the stacking component (4) inside the receiving frame (2), and a limiting mechanism two (9) is provided on one side of the upper surface of the storage plate (3). The stacking component (4) includes a base plate (41), which is located at the lower end of the storage plate (3). A cylinder (42) is provided between the base plate (41) and the storage plate (3). Connecting rods (43) are fixedly installed at the four corners of the upper surface of the base plate (41). A horizontal plate (44) is fixedly installed between two adjacent connecting rods (43). There are two sets of horizontal plates (44). Several sets of long plates (45) are provided between the two sets of horizontal plates (44). The feeding mechanism (7) includes a guide plate (71), which is hinged through the inside of the first limiting frame (5). A rectangular feeding groove (72) is provided at the middle section of the upper end face of the guide plate (71). One end of the guide plate (71) extends into the inside of the second limiting frame (6) and is hinged to a concave movable frame (73). The front and rear ends of the guide plate (71) are respectively hinged to the top of the front and rear inner walls of the movable frame (73). The movable frame (73) is located at the upper middle part inside the second limiting frame (6). A circular retaining ring (74) is fixedly installed at the bottom of the front and rear end faces of the movable frame (73). The two sets of circular retaining rings (74) are respectively slidably connected to the top of the sliding groove (75) opened near the middle section of the front and rear end faces of the second limiting frame (6). A gravity spring damper (76) is provided between the bottom of the circular retaining ring (74) and the bottom inner wall of the sliding groove (75). The two sets of limiting mechanisms (8) are mirror-symmetrical about the central axis of the receiving frame (2), and each limiting mechanism (8) includes a vertical frame (81). The vertical frame (81) is fixedly installed inside the receiving frame (2) at the rear end of the shelf (3). A horizontal frame (82) is fixedly installed on the upper end of the vertical frame (81), and the horizontal frame (82) is connected to the interior of the vertical frame (81). Long slots (83) are provided at the middle of the front and rear ends of the horizontal frame (82). A double-axis retaining ring (84) is provided on one side between the long grooves (83), and the front and rear ends of the double-axis retaining ring (84) extend to the outside of the long grooves (83) respectively. A gear (85) is fixedly installed in the middle section of the double-axis retaining ring (84). A stop rod (86) is rotatably connected to the front end of the double-axis retaining ring (84), and the front end of the stop rod (86) extends to the upper end of the shelf (3). A bow-shaped stop bar (87) is fixedly installed at the front and rear ends of the two sets of stop rods (86) on opposite sides. The frame (81) is slidably connected to a push block (88), and the upper surface of the push block (88) is set with a bevel and extends into the interior of the first horizontal frame (82). The push block (88) has a groove (89) at the top bevel, and a number of tooth grooves (810) are set at equal intervals inside the groove (89). The gear (85) is engaged at the top of the groove (89) and meshes with the tooth grooves (810). A circular retaining ring (811) is fixedly installed at the upper end of the front face of the push block (88), and the circular retaining ring (811) extends into the interior of the sliding groove (812) opened at the middle section of the front face of the frame (81). Two sets of upright frames (81) are connected together near the bottom position by a horizontal frame two (813). A motor one (814) is set in the center of the interior of the horizontal frame two (813). A disc (815) is fixedly installed at the front end of the four sets of horizontal frames two (813) at the bearing of the motor one (814). A lifting rod (816) is hinged to the front end of the disc (815) near the bottom center. A crossbar (817) is hinged to the top of the lifting rod (816). The two ends of the crossbar (817) are fixedly connected to two sets of circular retaining rings two (811).

2. The automatic stacking device for LCD display production according to claim 1, characterized in that, The movable frame (73) is fixedly installed with a limit rod (77) near the bottom inner wall, and a stop frame (78) is provided at the upper end of the limit rod (77). The bottom surface of the stop frame (78) is set with a beveled surface, and its higher end presses against the upper end of the limit rod (77). A push rod (79) is provided at the center of the side of the stop frame (78) away from the limit rod (77), and a cylinder two (710) is connected to the end of the push rod (79) away from the stop frame (78). The cylinder two (710) is fixedly installed on the upper side of the base (1) through a suitable base.

3. The automatic stacking device for LCD display production according to claim 1, characterized in that, The limiting mechanism two (9) includes a motor two (91), which is located on the inner wall of the receiving frame (2) at the upper end of the placement plate (3). A worm gear (92) is provided at the output end of the motor two (91). A turbine (93) is provided at the front and rear ends of the worm gear (92), and the turbine (93) meshes with the worm gear (92). The center of the two sets of turbines (93) is rotatably connected to the top surface of the placement plate (3) through a rotating shaft. A clamping plate (94) is provided on the side of the two sets of turbines (93) away from the worm gear (92). A movable groove (95) is opened in the middle section of the side of the two sets of clamping plates (94) away from each other. A slider (96) slides in the middle section of the movable groove (95). A hinge rod (97) is hinged between the slider (96) and the inner wall of the corresponding receiving frame (2). Each set of hinge rods (97) is formed by hinged two sets of rods.

4. The automatic stacking device for LCD display production according to claim 3, characterized in that, Two sets of clamping plates (94) are respectively fixedly installed with inclined guide plates (98) at one end. Several sets of toothed grooves (99) are equally spaced at the middle section opposite to the two sets of guide plates (98). The toothed grooves (99) mesh with the turbine (93). The two sets of clamping plates (94) are respectively provided with transverse grooves (910) near the upper end. The two sets of abutment rods (86) pass through the transverse grooves (910).

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