Conveying device and display screen detection equipment

Abstract

The utility model discloses a conveying device and display screen detection equipment. The conveying device comprises a rack; the driving mechanism is installed on the machine frame and comprises a first driving part, a driving wheel, a driven wheel, a conveying belt, a plurality of first rolling wheels and a plurality of second rolling wheels, the driving wheel is in transmission connection with the first driving part, the driven wheel and the driving wheel are oppositely arranged, and the first rolling wheels and the second rolling wheels are located between the driving wheel and the driven wheel in the conveying direction; the multiple first rollers are located above the multiple second rollers, the conveying belt is wound outside the driving wheel, the driven wheel and the multiple first rollers, and the multiple second rollers are located below the conveying belt and used for supporting one side of the conveying belt. According to the conveying device, due to the fact that the first idler wheels are arranged below the conveying belt and rolling friction exists between the first idler wheels and the conveying belt, abrasion to the conveying belt is reduced, and energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to display screen conveying technical field especially relates to conveying device and display screen detection equipment. BACKGROUND

[0002] The flexible display screen is made of soft material, and is a deformable and bendable display device. In the process of assembling the flexible display screen, the conveying belt is used for conveying. However, when conveying the flexible display screen with large weight, the conveying belt is usually supported by a supporting plate to ensure the tension of the conveying belt and the stability of conveying. However, sliding friction will occur between the conveying belt and the supporting plate, which will cause damage to the conveying belt and increase the driving energy consumption due to the large friction. SUMMARY

[0003] To solve at least one problem existing in the prior art, according to the first aspect of the utility model, a conveying device is provided, comprising: a rack; a driving mechanism installed on the rack, comprising a first driving member, a driving wheel, a driven wheel, a conveying belt, a plurality of first rollers and a plurality of second rollers, the driving wheel is drivingly connected to the first driving member, the driven wheel and the driving wheel are oppositely arranged, a plurality of first rollers and a plurality of second rollers are located between the driving wheel and the driven wheel along the conveying direction, a plurality of first rollers are located above a plurality of second rollers, the conveying belt is wound outside the driving wheel, the driven wheel and a plurality of first rollers, a plurality of second rollers are located below the conveying belt for supporting one side of the conveying belt.

[0004] In some embodiments, the conveying device comprises two racks and two driving mechanisms, one driving mechanism is installed on one rack, and the two racks are arranged in parallel.

[0005] In some embodiments, the diameter of the first roller is greater than the diameter of the second roller.

[0006] In some embodiments, the inner side of the conveying belt is provided with a clamping groove extending in the circumferential direction, and part of the first rollers are arranged in the clamping groove.

[0007] In some embodiments, along the axial direction of the first roller, the width of the clamping groove is greater than the length of the first roller.

[0008] In some embodiments, the inner side of the conveying belt is provided with at least one clamping groove extending in the circumferential direction, and the first roller is provided with at least one protrusion extending in the circumferential direction, one protrusion is correspondingly arranged in one clamping groove.

[0009] In some embodiments, the conveying device further comprises a position detection sensor installed on the frame and arranged at the end of the conveying direction for detecting the position of the display screen conveyed by the conveying belt.

[0010] In some embodiments, the conveying device further comprises a position blocking mechanism arranged at the end of the conveying direction for blocking the display screen conveyed by the conveying belt.

[0011] In some embodiments, the position blocking mechanism comprises a support frame and a travel switch and an elastic buffer arranged on the support frame, and the travel switch and the elastic buffer are arranged side by side along the width direction of the conveying belt.

[0012] In some embodiments, the conveying device further comprises a plurality of guide wheels, and the guide wheels are arranged on the frame in a spaced manner for guiding the conveying of the display screen.

[0013] In some embodiments, the guide wheels and the first rollers are alternately arranged on the frame.

[0014] In some embodiments, the conveying device further comprises an adjusting mechanism connected to one of the frames for driving one of the frames and one of the driving mechanisms to move so as to adjust the distance between the two conveying belts.

[0015] In some embodiments, the conveying device comprises two adjusting mechanisms arranged at the two ends of the frame along the conveying direction.

[0016] In some embodiments, the adjusting mechanism comprises a second driving member, a transmission sprocket set and a transmission chain, and the transmission sprocket set is drivingly connected between the second driving member and the transmission chain.

[0017] In some embodiments, the conveying device further comprises a tension adjusting mechanism connected between the frame and the driven wheel for driving the driven wheel to move so as to adjust the tension of the conveying belt.

[0018] In a second aspect, the utility model provides a display screen detection equipment, including conveying device above.

[0019] In summary, the conveying device and the display screen detection equipment have the following technical effects.

[0020] The power is provided by the first driving member, when the driving belt is running, the rotation is driven by the driving wheel, the driven wheel, the first roller and the second roller, the belt is supported by the plurality of first rollers, because the rolling friction is between the first roller and the belt, compared with the supporting mode of the belt by the supporting plate in the prior art, the rolling friction reduces the abrasion of the belt and the friction between the belt, a smaller power driving source is used, and the energy consumption is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the conveying device of the utility model embodiment.

[0022] Figure 2 It is Figure 1 It is an enlarged schematic view of the position I in the figure.

[0023] Figure 3 It is Figure 1 It is a structural schematic view of one rack and one driving mechanism in the figure.

[0024] Figure 4 It is Figure 3 It is an enlarged schematic view of the position II in the figure.

[0025] Figure 5 It is Figure 4 It is an enlarged schematic view of part area in the figure.

[0026] The drawings: 100-conveying device, 10-rack, 11-supporting foot, 12-mounting plate, 20-driving mechanism, 21-first driving member, 22-driving wheel, 23-driven wheel, 24-belt, 241-slot, 25-first roller, 26-second roller, 27-third roller, 30-guide wheel, 40-in-place detection sensor, 50-in-place blocking mechanism, 51-supporting frame, 52-travel switch, 53-elastic buffer, 60-adjusting mechanism, 61-second driving member, 62-transmission sprocket set, 63-transmission chain, 70-sliding block, 80-sliding rail, 90-tension adjusting mechanism, 91-mounting seat, 911-waist type hole, 92-mounting shaft, 93-adjusting screw, 94-fixing nut. DETAILED DESCRIPTION

[0027] In order to better understand and implement, the technical scheme in the utility model embodiment will be clearly and completely described below by combining the drawings in the utility model embodiment.

[0028] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] In the prior art, when conveying materials, such as conveying a flexible display screen weighing several tons, the conveyor belt 24 may bend under the pressure of the material due to its large weight and extended length, thus affecting smooth operation. Therefore, the conveyor belt 24 needs to be supported. However, in the prior art, the upper side of the conveyor belt 24 is supported by a pallet. Since the conveyor belt 24 and the pallet are in surface contact, sliding friction will occur between them when the conveyor belt 24 is running, causing wear on the conveyor belt. At the same time, the driving energy consumption will also increase in order to overcome the sliding friction.

[0032] To resolve the above technical issues, please refer to [link / reference]. Figures 1 to 5 The conveying device 100 provided in this embodiment of the utility model includes a frame 10 and a drive mechanism 20.

[0033] The frame 10 serves as the mounting base. The drive mechanism 20 is mounted on the frame 10 and includes a first drive member 21, a drive wheel 22, a driven wheel 23, a conveyor belt 24, multiple first rollers 25, and multiple second rollers 26. The drive wheel 22 is drivenly connected to the first drive member 21. The driven wheel 23 is arranged opposite to the drive wheel 22. The multiple first rollers 25 and multiple second rollers 26 are located between the drive wheel 22 and the driven wheel 23 along the conveying direction. The multiple first rollers 25 are located above the multiple second rollers 26. The conveyor belt 24 is wrapped around the drive wheel 22, the driven wheel 23, and the multiple first rollers 25. The multiple second rollers 26 are located below the conveyor belt 24 and are used to support one side of the conveyor belt 24.

[0034] The conveying device 100 is powered by the first driving member 21, and when the driving belt 24 is driven to rotate, the driving wheel 22, the driven wheel 23, the first roller 25 and the second roller 26 are driven to rotate, the driving belt 24 is supported by the plurality of first rollers 25, and the driving belt 24 is supported by the plurality of second rollers 26. Since the first roller 25 and the driving belt 24 are in rolling friction, compared with the prior art, the driving belt 24 is supported by the supporting plate, the rolling friction reduces the wear of the driving belt 24, and the friction between the driving belt 24 is also reduced. Smaller power driving source is adopted, energy consumption is reduced.

[0035] In the embodiment, the conveying device 100 is used for conveying the flexible display screen, and in other embodiments, other materials can also be conveyed. The flexible display screen is a screen used in a display device and has a bendable and deformable feature, which meets the needs of different customer groups in the market.

[0036] Further, the first driving member 21 of the embodiment is a driving motor. It can be understood that in order to enable the driving belt 24 to convey at a predetermined speed, the driving mechanism 20 can further include a speed reducer connected between the driving motor and the driving wheel 22, so as to match the transmission of the required rotating speed and torque through the speed reducer.

[0037] Please refer to Figure 1 In an embodiment of the present application, in order to reduce the contact area with the flexible display screen during conveying, the conveying device 100 includes two racks 10 and two driving mechanisms 20, one driving mechanism 20 is installed on one rack 10, and the two racks 10 are arranged in parallel. In this way, by arranging two driving mechanisms 20, the two driving belts 24 of the two driving mechanisms 20 support and convey the flexible display screen, and the width of the driving belt 24 can be reduced, thereby reducing the contact area with the flexible display screen and avoiding scratching the flexible display screen.

[0038] Further, since the first roller 25 is located above the second roller 26, the second roller 26 directly supports and receives the load of the display screen, and therefore, a larger diameter needs to be provided, that is, the diameter of the first roller 25 is greater than that of the second roller 26, and the first roller 25 has greater supporting strength to adapt to the pressure applied by the load.

[0039] Further, since the extension length of the conveying belt 24 along the conveying direction is long, the middle region can slide off the first roller 25, therefore, the inner side of the conveying belt 24 is provided with a clamping groove 241 extending along the circumferential direction, and part of the first roller 25 is arranged in the clamping groove 241, that is, after part of the first roller 25 is clamped in the clamping groove 241, the conveying belt 24 can be limited along the axial direction of the first roller 25 during the movement along the first roller 25, so as to avoid the disengagement of the conveying belt 24 from the first roller 25.

[0040] It can be understood that, in order to ensure the smoothness of the conveying belt 24, the width of the clamping groove 241 along the axial direction of the first roller 25 is greater than the length of the first roller 25, so that the installation of the conveying belt 24 and the first roller 25 can be facilitated to avoid friction between the end of the first roller 25 in the axial direction and the conveying belt 24, and the first roller 25 can limit the conveying belt 24.

[0041] The difference between the length of the first roller 25 and the width of the clamping groove 241 along the axial direction of the first roller 25 can be set in the range of 0.5cm-1.0cm, so that by setting the value in this range, the length of the first roller 25 is not set too large to achieve the limiting effect, and the difference is not too small to facilitate the installation of the conveying belt 24 and the first roller 25. For example, the difference can be set to 0.5cm, 0.6cm, 0.7cm, 0.8m, 0.9m or 1.0cm, etc., which is not limited herein.

[0042] In other embodiments, at least one clamping groove extending along the circumferential direction can also be arranged on the inner side of the conveying belt 24, and the first roller 25 is provided with at least one protrusion extending along the circumferential direction, and one protrusion is arranged in one clamping groove, so that the rotation of the conveying belt 24 driven by the first roller 25 can also be achieved, and the limiting effect of the conveying belt 24 can also be achieved.

[0043] Please refer to Figure 2 and Figure 3In one embodiment of the utility model, when the conveying belt 24 returns, in order to change the direction of the conveying belt 24, the driving mechanism 20 further comprises two third rollers 27, along the conveying direction, the two third rollers 27 are arranged on the two sides of the plurality of second rollers 26, one is arranged close to the driving wheel 22, and one is arranged close to the driven wheel 23, and in the vertical direction, the third roller 27 and the second roller 26 have a height difference, so that by the arrangement of the two third rollers 27, when the conveying belt 24 returns, the direction from the driven wheel 23 to the second roller 26 can change, and the conveying belt 24 can change the direction from the second roller 26 and slide to the driving wheel 22, so as to reduce the slope of the conveying belt 24 between the second roller 26 and the driven wheel 23 and between the second roller 26 and the driving wheel 22, so that the direction change of the conveying belt 24 can be more gentle, which helps the smooth movement of the conveying belt 24.

[0044] In some embodiments of the utility model, the conveying belt 24 located on the lower side can be clamped between the first roller 25 and the second roller 26, in this way, part of the first roller 25 can be located in the upper clamping groove 241 and the lower clamping groove 241 of the conveying belt 24 at the same time, and the first roller 25 and the second roller 26 limit the conveying belt 24 at the same time.

[0045] It can be understood that, referring to Figure 4 and Figure 5 Since the conveying belt 24 has ductility, in order to adapt to the deformation of the conveying belt 24 after long-term use, the conveying device 100 further comprises a tension adjusting mechanism 90 connected between the rack 10 and the driven wheel 23, which drives the driven wheel 23 to move to adjust the tension of the conveying belt 24.

[0046] Specifically, the tension adjusting mechanism 90 comprises a mounting seat 91, a mounting shaft 92, an adjusting screw 93 and a fixing nut 94, the mounting seat 91 is mounted on the rack 10 and is provided with a waist-shaped hole 911 extending along the conveying direction, the rack 10 is arranged through the driven wheel 23 and allows the driven wheel 23 to rotate, the adjusting screw 93 is connected between the mounting seat 91 and the mounting shaft 92, when it is necessary to adjust the tension of the conveying belt 24, the adjusting screw 93 is screwed to drive the mounting shaft 92 to move in the waist-shaped hole 911 away from the driving wheel 22, after reaching the position, the fixing nut 94 is locked, so as to realize the adjustment of the tension of the conveying belt 24.

[0047] Please refer to Figure 3 and Figure 4In an embodiment of the utility model, in order to avoid the display screen to shift in the process of conveying, conveying device 100 still includes multiple guide wheels 30, multiple guide wheels 30 are installed in rack 10, and are used for guiding the conveying of display screen, specifically, the axial direction of first roller 25 and second roller 26 is horizontal direction, the axial direction of guide wheel 30 is vertical direction, and first roller 25, second roller 26 are arranged perpendicularly, so that when display screen is placed on conveyor belt 24 and is conveyed, touches guide wheel 30, is guided and is limited by guide wheel 30, avoids shifting, and guide wheel 30 can roll simultaneously, and it is roller friction between guide wheel 30, when guiding display screen, has smaller friction, avoids scratching display screen.

[0048] Wherein, refer to Figure 3 And Figure 4 The rack 10 of the embodiment includes multiple support feet 11 and a mounting plate 12 disposed on the top of the support feet 11. The driving wheel 22, the driven wheel 23, the first roller 25, and the guide wheel 30 are installed on the mounting plate 12. The second roller 26 is installed on the support feet 11. In order to reduce the occupied volume of the rack 10 and the entire driving mechanism 20, the multiple guide wheels 30 and the multiple first rollers 25 are alternately arranged on the rack 10. Specifically, one second roller 26 is installed on one support foot 11. In this way, when the guide wheels 30 and the first rollers 25 are installed on the rack 10, they can occupy less space compared to the case where the guide wheels 30 and the first rollers 25 are arranged in the vertical direction. This allows the entire conveying device to be miniaturized.

[0049] It can be understood that when the display screen is conveyed from the initial position to the end point, the arrival of the display screen can be monitored. The conveying device 100 includes an arrival detection sensor 40 installed on the rack 10 and located at the end of the conveying direction. The arrival detection sensor 40 is used to detect the arrival of the display screen conveyed by the conveyor belt 24. When the display screen arrives, the conveyor belt 24 will stop running. Therefore, through the arrangement of the arrival detection sensor 40, the display screen conveyed can be detected in real time, and the display screen can be transferred in real time to avoid the display screen from falling off the conveyor belt after being conveyed to the end.

[0050] Further, in order to avoid the display screen from falling off the conveyor belt 24 when the arrival detection sensor 40 fails, the conveying device 100 further includes an arrival blocking mechanism 50 located at the end of the conveying direction. The arrival blocking mechanism 50 is used to stop the display screen conveyed by the conveyor belt 24. In this way, if the arrival detection sensor 40 fails, the display screen will continue to move forward driven by the conveyor belt 24 and touch the arrival blocking mechanism 50. The arrival blocking mechanism 50 transmits information to the first driving member 21, and the first driving member 21 stops rotating at this time, thereby avoiding the display screen from falling off due to continuous forward movement.

[0051] Specifically, referring to Figure 4 and Figure 5 , the in-place blocking mechanism 50 comprises a support frame 51, a travel switch 52 and an elastic buffer 53 arranged on the support frame 51, the travel switch 52 and the elastic buffer 53 are arranged side by side along the width direction of the conveying belt 24, so that when the display screen is conveyed by the conveying belt 24, the travel switch 52 is touched, the travel switch 52 transmits an electrical signal to the first driving member 21, at this time, the first driving member 21 will stop running, thereby avoiding the display screen from falling off the conveying belt 24, and at the same time, the display screen will impact on the elastic buffer 53, the elastic buffer 53 stops the display screen to resist the further forward movement of the display screen due to inertia.

[0052] In the embodiment, the elastic buffer 53 is a super elastic glue, which has good elastic performance and small compression deformation, has the rigidity of plastic and the elasticity of rubber, and thus can resist the pressure generated by the inertia movement of the display screen with large weight.

[0053] Referring to Figure 1 and Figure 2 , in an embodiment of the utility model, in order to make the conveying device 100 suitable for conveying flexible display screens with different sizes, the conveying device 100 further comprises an adjusting mechanism 60 connected to one of the racks 10, which is used to drive one of the racks 10 and one of the driving mechanisms 20 to move, so as to adjust the distance between the two conveying belts 24, so that through the setting of the adjusting mechanism 60, one of the racks 10 and the driving mechanism 20 arranged on the rack 10 can be driven to move, so as to adjust the distance between the two driving mechanisms 20, that is, the distance between the two conveying belts 24, so as to adapt to the support and conveying of flexible display screens with different width sizes.

[0054] Specifically, through the setting of the adjusting mechanism 60 in the embodiment, the conveying device 100 can be adapted to the conveying of flexible display screens with a length of 500mm and a width of 500mm to a length of 3000mm and a width of 3200mm, thereby improving the application range of the conveying device 100 of the embodiment.

[0055] It can be understood that, in order to ensure the stability of the driving movement of the rack 10, the conveying device 100 comprises two adjusting mechanisms 60 arranged at both ends of the rack 10 along the conveying direction, so that through the setting of the two adjusting mechanisms 60, power can be provided to the movement of the rack 10 and the driving mechanism 20 to drive the rack 10 and the driving mechanism 20 to move stably.

[0056] Specifically, referring to Figure 2The adjusting mechanism 60 comprises a second driving member 61, a transmission sprocket set 62 and a transmission chain 63, the transmission sprocket set 62 is transmissionally connected between the transmission chain 63 and the second driving member 61, and the second driving member 61 is an electric motor, so that, under the driving of the second driving member 61, power is transmitted from the transmission sprocket set 62 to the transmission chain 63, and the transmission chain 63 is connected to the frame 10, so that the operation of the transmission chain 63 can drive the frame 10 to move.

[0057] It can be understood that, in order to ensure smooth movement of the frame 10, a sliding block 70 can also be arranged on the frame 10, and a sliding rail 80 is arranged on the support body, the sliding block 70 and the sliding rail 80 are slidingly arranged, and the sliding rail 80 can support the sliding block 70, so that, when the second driving member 61 drives the frame 10 to move, the frame 10 can drive the driving mechanism 20 to move smoothly and linearly.

[0058] The conveying device 100 is supported by the first roller 25 arranged below the conveying belt 24, and the conveying belt 24 and the first roller 25 are in rolling friction, so as to reduce the supporting friction of the conveying belt 24 during movement, thereby achieving the effect of reducing driving energy consumption and reducing wear of the conveying belt 24; the distance between the two frames 10 and the two driving mechanisms 20 is adjusted by the adjusting mechanism 60, so that the two adjusting mechanisms 60 can adapt to the conveying of different flexible display screens.

[0059] In another embodiment, the utility model provides a display screen detection equipment, including above-mentioned conveying device.

[0060] The technical means disclosed by the utility model scheme is not only limited to the technical means disclosed by the above-mentioned embodiment, but also includes the technical scheme composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the technical field, under the premise of not departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the utility model.

Claims

1. A delivery device (100) characterized by, The application relates to a conveying device (100) for display screens. The conveying device (100) comprises a frame (10) and a driving mechanism (20) mounted on the frame (10), wherein the driving mechanism (20) comprises a first driving element (21), a driving wheel (22), a driven wheel (23), a conveying belt (24), a plurality of first rollers (25) and a plurality of second rollers (26), the driving wheel (22) is drivingly connected to the first driving element (21), the driven wheel (23) is oppositely arranged to the driving wheel (22), the plurality of first rollers (25) and the plurality of second rollers (26) are arranged between the driving wheel (22) and the driven wheel (23) along a conveying direction, the plurality of first rollers (25) are arranged above the plurality of second rollers (26), the conveying belt (24) is arranged around the driving wheel (22), the driven wheel (23) and the plurality of first rollers (25) outside, and the plurality of second rollers (26) are arranged below the conveying belt (24) for supporting one side of the conveying belt (24). The conveying device (100) comprises two frames (10) and two driving mechanisms (20), one driving mechanism (20) is correspondingly mounted on one frame (10), and the two frames (10) are arranged in parallel.

2. The delivery device (100) according to claim 1, characterized in that The diameter of the first roller (25) is greater than the diameter of the second roller (26).

3. The delivery device (100) according to claim 1 or 2, characterized in that The inner side of the conveying belt (24) is provided with a clamping groove (241) extending in the circumferential direction, and part of the first rollers (25) are arranged in the clamping groove (241).

4. The delivery device (100) according to claim 1 or 2, characterized in that The width of the clamping groove (241) is greater than the length of the first roller (25) along the axial direction of the first roller (25).

5. The delivery device (100) according to claim 4, characterized in that The inner side of the conveying belt (24) is provided with at least one clamping groove extending in the circumferential direction, and the first roller (25) is provided with at least one protrusion extending in the circumferential direction, one protrusion is correspondingly clamped in one clamping groove.

6. The delivery device (100) according to claim 1 or 2, characterized in that The conveying device (100) comprises a position detection sensor (40) mounted on the frame (10) and arranged at the end of the conveying direction, for detecting the display screen conveyed by the conveying belt (24).

7. The delivery device (100) according to claim 1 or 2, characterized in that The conveying device (100) further comprises a position blocking mechanism (50) arranged at the end of the conveying direction, for stopping the display screen conveyed by the conveying belt (24).

8. The delivery device (100) according to claim 7, characterized in that The position blocking mechanism (50) comprises a support frame (51), a travel switch (52) and an elastic buffer (53) arranged on the support frame (51), and the travel switch (52) and the elastic buffer (53) are arranged in parallel along the width direction of the conveying belt (24).

9. The delivery device (100) according to claim 8, characterized in that The conveying device (100) further comprises a plurality of guide wheels (30) mounted on the frame (10) in a spaced manner, for guiding the conveying of the display screen.

10. The delivery device (100) according to claim 1 or 2, characterized in that The plurality of guide wheels (30) and the plurality of first rollers (25) are alternately arranged on the frame (10).

11. The delivery device (100) according to claim 10, characterized in that ​ 12. The delivery device (100) according to claim 2, characterized in that The conveying device (100) further comprises an adjusting mechanism (60) connected to one of the frames (10) for driving one of the frames (10) and one of the driving mechanisms (20) to adjust the distance between the two conveying belts (24).

13. The delivery device (100) according to claim 12, characterized in that The conveying device (100) comprises two adjusting mechanisms (60) arranged at the two ends of the frame (10) along the conveying direction.

14. The delivery device (100) according to claim 12 or 13, characterized in that The adjusting mechanism (60) comprises a second driving member (61), a transmission sprocket set (62) and a transmission chain (63), the transmission sprocket set (62) being drivingly connected between the second driving member (61) and the transmission chain (63).

15. The delivery device (100) according to claim 1 or 2, characterized in that The conveying device (100) further comprises a tension adjusting mechanism (90) connected between the frame (10) and the driven wheel (23) for driving the driven wheel (23) to adjust the tension of the conveying belt (24).

16. A display screen detection apparatus characterized by comprising: The conveying device according to any one of claims 1-15. The conveying device according to any one of claims 1-15.

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