Device for detecting wear resistance of printing surface of packaging bag

Abstract

The invention relates to the technical field of packaging bag detection, in particular to a packaging bag printing surface wear resistance detection device which comprises a device body, a plurality of supporting legs are fixedly connected to the bottom of the device body, a sliding door is movably connected to the front face of the device body, and a lower rotating rod is rotationally connected to the center of the bottom of the device body through a bearing. A main motor is fixedly installed at the bottom of the device body through a fixing frame, an output shaft of the main motor is fixedly connected with the lower end of a lower rotating rod, and the upper end of the lower rotating rod is fixedly connected with a transmission frame. Through the arrangement of the friction balls, the friction balls are integrally driven by the rollers to rotate, when a packaging bag is located between the two annular grooves, the packaging bag is subjected to force in the vertical direction of the friction balls, and when the packaging bag moves to the side portions of the friction balls, the packaging bag is subjected to force generated when the friction balls drive friction strips to rotate along the axes of the annular grooves; therefore, the packaging bag is rubbed in all directions, friction dead angles caused by single-direction friction are avoided, and the effect of detecting the wear resistance of the packaging bag is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bag detection, and in particular to a device for detecting the wear resistance of a printed surface of a packaging bag. Background Art

[0002] Packaging bags refer to bags used to package various items. They are widely used in daily life and industrial production, making it easy to transport and store goods during the production and circulation process. At the same time, various product information can be printed on the surface of the packaging bags to quickly distinguish the products in the packaging bags. Due to the important role of packaging bags, the printed surface of the packaging bags is extremely important when producing printed information, and it is necessary to test the wear resistance of the printed surface after printing.

[0003] The prior art discloses a device for detecting the wear resistance of the printed surface of a packaging bag with a publication number of CN115683915A, wherein a cylinder is provided with a plurality of belt conveyors vertically mounted on a base, the plurality of belt conveyors are arranged in a circle around the axis of the cylinder, and a plurality of friction bodies are evenly distributed on the outer surface of the belt conveyor. The automatic simulation of the actual use scenario of the packaging bag is adopted to make the friction action on the surface of the packaging bag more diverse, thereby improving the authenticity of the simulated wear scenario of the packaging bag and the accuracy of the detection result. However, the direction of rotation is limited, and only one direction can be detected, and the wear of the packaging bag in all directions cannot be fully detected. The detection result is not comprehensive, and the friction body is easily dirty and worn for the detection of the printed surface, which will affect the subsequent detection results. The device is not convenient for cleaning and replacing the friction body. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to propose a device for detecting the wear resistance of the printed surface of a packaging bag.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The invention relates to a device for detecting the wear resistance of the printed surface of a packaging bag, comprising a device body, a plurality of legs are fixedly connected to the bottom of the device body, a sliding door is movably connected to the front of the device body, a lower rotating rod is rotatably connected to the center of the bottom of the device body through a bearing, a main motor is fixedly installed at the bottom of the device body through a fixing frame, an output shaft of the main motor is fixedly connected to the lower end of the lower rotating rod, an upper end of the lower rotating rod is fixedly connected to a transmission frame, an upper rotating rod is rotatably connected to the center of the top of the device body through a bearing, a connecting sleeve is rotatably connected to the top of the upper rotating rod, a main telescopic rod is fixedly connected to the inner wall of the connecting sleeve, a limiting cover is fixedly connected to the outer wall of the main telescopic rod, a lower end of the limiting cover is fixedly connected to the top of the device body, a lower end of the upper rotating rod is also fixedly connected to the same transmission frame, a friction ball is arranged inside the device body, the friction ball is located between two transmission frames, and a plurality of uniformly distributed friction strips are installed on the outer wall of the friction ball;

[0007] The transmission frame comprises a support block, both ends of the support block are fixedly connected with a connecting frame on one side close to the friction ball, and both ends of each connecting frame are rotatably connected with a roller, the outer wall of the friction ball is provided with two annular grooves, and the roller is movably connected with the inner wall of the annular groove, and a transmission device is installed on the side of each support block away from the friction ball, the outer wall of the transmission device is transmission-connected with a spur gear, and the spur gear is transmission-connected with the roller through the transmission device, the bottom of the device body is fixedly connected with a lower casing, the inner wall of the lower casing is fixedly connected with an inner gear ring meshing with the spur gear, the lower casing cover is arranged on the outer side of the lower rotating rod, the inner wall of the limit cover is slidably connected with an upper casing, the inner wall of the limit cover is provided with a limit groove, the outer wall of the upper casing is fixedly connected with a limit block slidably connected with the inner wall of the limit groove, the inner wall of the upper casing is also fixedly connected with an inner gear ring meshing with the spur gear, and the inner wall of the upper casing is rotationally connected with the upper rotating rod through a bearing;

[0008] The top of the device body is fixedly connected with a plurality of secondary telescopic rods, the lower ends of the secondary telescopic rods are fixedly connected with a connecting ring, and the bottom of the connecting ring is fixedly connected with a plurality of evenly distributed grabbing structures.

[0009] Preferably: the transmission device includes a mounting shell, the interior of the mounting shell is rotatably connected to a shaft rod, both ends of the shaft rod are fixedly connected to a first pulley, the outer wall of the shaft rod is fixedly connected to a second bevel gear, the shaft of the spur gear is rotatably connected to the outer wall of the mounting shell, one end of the upper shaft of the spur gear is fixedly connected to the same second bevel gear, and the two second bevel gears are meshed with each other.

[0010] Preferably, a second pulley is fixedly connected to the roller at one end of each connecting frame, a transmission belt is sleeved on the outside of the first pulley, and the first pulley is transmission-connected to the second pulley via the transmission belt.

[0011] Preferably: the grabbing structure includes a mounting strip fixedly mounted on the bottom of the connecting ring, a driving box is fixedly connected to the outer wall of the mounting strip on the side close to the friction ball, a plurality of evenly distributed arc rods are mounted on the outer wall of the driving box on the side close to the friction ball, and the driving box is used to adjust the spacing between the plurality of arc rods.

[0012] Preferably: the drive box includes a central block and two movable sleeves, the middle part of the central block is fixedly connected to the outer wall of the mounting strip, the two movable sleeves are respectively sleeved on the two ends of the two central blocks, the middle part of the central block is fixedly connected with a first connecting strip, the two ends of the first connecting strip are fixedly connected with symmetrically distributed telescopic slide rods, the extending ends of the two telescopic slide rods are respectively fixedly connected to the inner walls of the two movable sleeves, the outside of each of the telescopic slide rods is sleeved with a plurality of sliding sleeves, the outer walls of the first connecting strip, the sliding sleeve and the movable sleeve are fixedly connected with a second connecting strip, the first connecting strip is fixedly connected to the arc rod in the middle part through the second connecting strip, the movable sleeve is fixedly connected to the arc rod at the end part through the second connecting strip, the sliding sleeve is fixedly connected to the remaining arc rods through the second connecting strip, and the outer wall of each of the telescopic slide rods is sleeved with a plurality of springs for adjusting the distance between adjacent arc rods.

[0013] Preferably: the outer wall of the center block is fixedly connected to a driving motor, both sides of the first connecting strip are rotatably connected to threaded rods, one end of each threaded rod located inside the first connecting strip is fixedly connected to a first bevel gear, the output shaft of the driving motor extends to the inner side of the first connecting strip, the output shaft of the driving motor is fixedly connected to a driving gear meshing with two first bevel gears, a slider is detachably mounted on the inner wall of each movable sleeve close to the center block, the outer wall of the slider is slidably connected to the inner wall of the center block, and the two threaded rods are threadedly connected to the two sliders respectively.

[0014] Preferably: a plurality of suction cups are fixedly installed on the outside of each of the arc-shaped rods, a bronchus is fixedly connected to the outer wall of each of the arc-shaped rods, the bronchus is connected with the plurality of suction cups through an air channel arranged inside the arc-shaped rod, a trachea joint is fixedly connected to the outer wall of the central block, the trachea joint is connected to the ends of a plurality of bronchi, a main air pipe is fixedly connected to the outer wall of the trachea joint, an end of the main air pipe away from the trachea joint is connected to the interior of a connecting ring, a spring hose is fixedly connected to the top of the connecting ring, and the spring hose is connected to the main air pipe through the air channel arranged inside the connecting ring.

[0015] Preferably, a baffle is fixedly connected to the lower end of the mounting strip, and the baffle is located outside the tracheal joint and the bronchus.

[0016] Compared with the existing technology, the present invention has the following beneficial effects:

[0017] 1. The setting of the main telescopic rod can facilitate the removal of the friction ball. When the main telescopic rod is retracted, the upper casing and the transmission frame are retracted to the inside of the limit cover, so that the friction ball can be easily removed and replaced or cleaned;

[0018] 2. The setting of the friction ball, the main motor drives the lower rotating rod to rotate as a whole. When the transmission frame rotates, the spur gear will also move along the lower casing, so that the spur gear rotates below the limit of the inner gear ring, and the spur gear drives the shaft rod to rotate under the transmission of the second bevel gear, and the roller can be rotated under the transmission of the first pulley, the transmission belt and the second pulley, so that the friction ball is driven to rotate along the annular groove as a whole through the rotation of the roller, so that when the friction strip on the outside of the friction ball contacts the outer surface of the packaging bag, not only will there be lateral friction when the friction ball rotates along the lower rotating rod, but also when the friction ball rotates as a whole driven by the roller, when the packaging bag is located between the two annular grooves, it will be subjected to the force of the friction ball in the up and down directions, and when the packaging bag moves to the side of the friction ball, it will be subjected to the force of the friction ball and the friction strip rotating along the axis of the annular groove, thereby rubbing the packaging bag in all directions, avoiding the friction dead angle caused by single-direction friction, and ensuring the effect of the anti-wear performance test of the packaging bag;

[0019] 3. The air inside the suction cup is extracted through the main airway and bronchus by a vacuum pump, so that the suction cups on multiple arc-shaped rods can adsorb the inner wall of the packaging bag to fix the packaging bag. In addition, during the detection process, if the distance between multiple limit covers is reduced by driving the motor, the wear resistance of the packaging bag in a wrinkled state can be simulated, thereby comprehensively testing the wear resistance of the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 It is a front view of the present invention;

[0022] Figure 3 The present invention Figure 2 Schematic diagram of the structural section at the AA line;

[0023] Figure 4 It is a schematic structural diagram of the friction ball of the present invention;

[0024] Figure 5 is a schematic cross-sectional view of the structure of the friction ball of the present invention;

[0025] Figure 6 The present invention Figure 5 A schematic diagram of the structure enlarged at B in the middle;

[0026] Figure 7 The present invention Figure 5 A schematic diagram of the structure enlarged at C in the middle;

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the transmission frame of the present invention;

[0028] Fig. 9 is a schematic diagram of the internal structure of the transmission device of the present invention;

[0029] Fig.10 is a three-dimensional schematic diagram of the gripping structure of the present invention;

[0030] Fig.11 is a three-dimensional schematic diagram of the gripping structure of the present invention from another direction;

[0031] Fig.12 It is a schematic structural diagram of the drive box of the present invention;

[0032] Fig.13 is a schematic diagram of the structural distribution of the bronchus of the present invention;

[0033] Fig.14 It is a schematic cross-sectional view of the drive box structure of the present invention;

[0034] Fig.15 The present invention Fig.14 Enlarged schematic diagram of the structure at D in the middle.

[0035] In the figure: 1, device body; 2, sliding door; 3, support foot; 4, friction ball; 5, main motor; 6, lower rotating rod; 7, lower casing; 8, inner gear ring; 9, support block; 10, transmission device; 11, spur gear; 12, connecting frame; 13, roller; 14, friction strip; 15, annular groove; 16, limit cover; 17, upper rotating rod; 18, upper casing; 19, connecting sleeve; 20, main telescopic rod; 21, secondary telescopic rod; 22, connecting ring; 23, grabbing structure; 24, spring hose; 25, drive box; 26, arc rod ; 27. Mounting strip; 28. Suction cup; 29. ​​Trachea joint; 30. Bronchus; 31. Main trachea; 32. Center block; 33. Movable sleeve; 34. Slider; 35. First connecting strip; 36. Second connecting strip; 37. Telescopic slide rod; 38. Sliding sleeve; 39. Spring; 40. Threaded rod; 41. Drive motor; 42. First bevel gear; 43. Baffle; 44. Mounting shell; 45. Shaft; 46. Second bevel gear; 47. First pulley; 48. Transmission belt; 49. Second pulley; 50. Limiting groove. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] Reference Figure 1-Figure 15A device for detecting the wear resistance of the printed surface of a packaging bag comprises a device body 1, a plurality of legs 3 are fixedly connected to the bottom of the device body 1, a sliding door 2 is movably connected to the front of the device body 1, a lower rotating rod 6 is rotatably connected to the center of the bottom of the device body 1 through a bearing, a main motor 5 is fixedly installed on the bottom of the device body 1 through a fixing frame, an output shaft of the main motor 5 is fixedly connected to the lower end of the lower rotating rod 6, an upper end of the lower rotating rod 6 is fixedly connected to a transmission frame, an upper rotating rod 17 is rotatably connected to the center of the top of the device body 1 through a bearing, a connecting sleeve 19 is rotatably connected to the top of the upper rotating rod 17, and a main motor 5 is fixedly connected to the inner wall of the connecting sleeve 19. The telescopic rod 20 and the main telescopic rod 20 are arranged to facilitate the removal of the friction ball 4. When the main telescopic rod 20 is retracted, the upper casing 18 and the transmission frame as a whole are retracted to the inner side of the limit cover 16, so as to facilitate the removal of the friction ball 4, so as to facilitate the replacement or cleaning of the friction ball 4. The outer wall of the main telescopic rod 20 is fixedly connected to the limit cover 16, and the lower end of the limit cover 16 is fixedly connected to the top of the device body 1. The lower end of the upper rotating rod 17 is also fixedly connected to the same transmission frame. The friction ball 4 is arranged inside the device body 1, and the friction ball 4 is located between the two transmission frames. The outer wall of the friction ball 4 is installed with a plurality of evenly distributed friction strips. 14; the transmission frame includes a support block 9, and both ends of the support block 9 close to the friction ball 4 are fixedly connected to the connecting frame 12, and both ends of each connecting frame 12 are rotatably connected to the roller 13, the outer wall of the friction ball 4 is provided with two annular grooves 15, and the roller 13 is movably connected to the inner wall of the annular groove 15, and each support block 9 is installed with a transmission device 10 on the side away from the friction ball 4, and the outer wall of the transmission device 10 is transmission-connected to the spur gear 11, and the spur gear 11 is transmission-connected to the roller 13 through the transmission device 10, and the bottom of the device body 1 is fixedly connected to the lower casing 7, and the inner wall of the lower casing 7 is fixedly connected to the spur gear 11 meshing with the inner wall of the spur gear 11. The inner gear ring 8 of the upper casing 18 is fixedly connected to the inner wall of the limit cover 16, and the lower casing 7 is covered on the outer side of the lower rotating rod 6. The inner wall of the limit cover 16 is slidably connected to the upper casing 18. The inner wall of the limit cover 16 is provided with a limit groove 50. The outer wall of the upper casing 18 is fixedly connected to a limit block slidably connected to the inner wall of the limit groove 50. The inner wall of the upper casing 18 is also fixedly connected to the inner gear ring 8 meshing with the spur gear 11. The inner wall of the upper casing 18 is rotatably connected to the upper rotating rod 17 through a bearing. A plurality of secondary telescopic rods 21 are fixedly connected to the top of the device body 1, and a connecting ring 22 is fixedly connected to the lower end of the secondary telescopic rod 21. A plurality of evenly distributed grabbing structures 23 are fixedly connected to the bottom of the connecting ring 22.

[0039] When the present invention is in use, the packaging bag to be inspected is put on the outside of the grasping structure 23, and then the spacing between the multiple arc-shaped rods 26 is controlled to increase to support the packaging bag. The suction cups 28 on the multiple arc-shaped rods 26 all adsorb the inner wall of the packaging bag to fix the packaging bag. After the fixation is completed, the secondary telescopic rod 21 is controlled to extend so that the connecting ring 22 and the grasping structure 23 move downward as a whole, so that the packaging bag outside the grasping structure 23 can contact the friction ball 4, completing the entire packaging bag installation process. During the inspection, the lower rotating rod 6 is driven by the main motor 5 to rotate as a whole, and the transmission frame installed on the lower rotating rod 6 will be movably connected to the inner wall of the annular groove 15 on the friction ball 4, so that the friction ball 4 and the transmission frame can be driven to rotate as a whole along the rotation direction of the lower rotating rod 6. When the transmission frame rotates, the roller 13 can be rotated, so that the rotation of the roller 13 drives the friction ball 4 to rotate along the annular groove 15 as a whole, so that when the friction strip 14 on the outside of the friction ball 4 contacts the outer surface of the packaging bag, there will not only be lateral friction when the friction ball 4 rotates along the lower rotating rod 6, but also when the friction ball 4 rotates as a whole driven by the roller 13, when the packaging bag is located between the two annular grooves 15, it will be subjected to the vertical force of the friction ball 4, and when the packaging bag moves to the side of the friction ball 4, it will be subjected to the force of the friction ball 4 and the friction strip 14 rotating along the axis of the annular groove 15, thereby rubbing the packaging bag in all directions, avoiding the friction dead angle caused by friction in a single direction, and ensuring the effect of the wear resistance test of the packaging bag.

[0040] In this embodiment, the transmission device 10 includes a mounting shell 44, the interior of the mounting shell 44 is rotatably connected to a shaft 45, both ends of the shaft 45 are fixedly connected to a first pulley 47, the outer wall of the shaft 45 is fixedly connected to a second bevel gear 46, the shaft of the spur gear 11 is rotatably connected to the outer wall of the mounting shell 44, one end of the shaft on the spur gear 11 is fixedly connected to the same second bevel gear 46, the two second bevel gears 46 are meshed with each other, and the roller 13 at one end of each connecting frame 12 is fixedly connected to a second pulley 49, and the first pulley 47 A transmission belt 48 is provided on the outside of the first pulley 47, and the first pulley 47 is connected to the second pulley 49 through the transmission belt 48. Due to the arrangement of the spur gear 11 and the inner gear ring 8, when the transmission frame rotates, the spur gear 11 will also move along the lower casing 7, so that the spur gear 11 rotates below the limit of the inner gear ring 8, and the spur gear 11 drives the shaft 45 to rotate under the transmission of the second bevel gear 46, and the roller 13 can be rotated under the transmission of the first pulley 47, the transmission belt 48 and the second pulley 49.

[0041] In this embodiment, the grabbing structure 23 includes a mounting strip 27 fixedly mounted at the bottom of the connecting ring 22, and a driving box 25 is fixedly connected to the outer wall of the mounting strip 27 close to the friction ball 4. A plurality of evenly distributed arc rods 26 are mounted on the outer wall of the driving box 25 close to the friction ball 4. The driving box 25 is used to adjust the spacing between the plurality of arc rods 26. The driving box 25 includes a central block 32 and two movable sleeves 33. The middle portion of the central block 32 is fixedly connected to the outer wall of the mounting strip 27. The two movable sleeves 33 are respectively sleeved on the two central blocks. The first connecting strip 35 is fixedly connected to the middle of the center block 32, and the two ends of the first connecting strip 35 are fixedly connected to the telescopic slide rods 37 which are symmetrically distributed. The extended ends of the two telescopic slide rods 37 are respectively fixedly connected to the inner walls of the two movable sleeves 33, and the outer side of each telescopic slide rod 37 is sleeved with a plurality of slide sleeves 38, wherein the number of the slide sleeves 38 can be set to one or more, which can be adjusted according to the number of arc-shaped rods 26, and the outer wall of the first connecting strip 35, the slide sleeve 38 and the movable sleeve 33 are fixedly connected to the second connecting strip 35. The first connecting strip 36 is fixedly connected to the arc rod 26 in the middle through the second connecting strip 36, the movable sleeve 33 is fixedly connected to the arc rod 26 at the end through the second connecting strip 36, and the sliding sleeve 38 is fixedly connected to the remaining arc rods 26 through the second connecting strip 36. The outer wall of each telescopic slide rod 37 is sleeved with a plurality of springs 39 for adjusting the distance between adjacent arc rods 26. The outer wall of the center block 32 is fixedly connected to the driving motor 41. Both sides of the first connecting strip 35 are rotatably connected. There are threaded rods 40, and one end of each threaded rod 40 located inside the first connecting strip 35 is fixedly connected to a first bevel gear 42. The output shaft of the drive motor 41 extends to the inner side of the first connecting strip 35, and the output shaft of the drive motor 41 is fixedly connected to a drive gear meshing with the two first bevel gears 42. A slider 34 is detachably installed on the inner wall of each movable sleeve 33 close to the center block 32. The outer wall of the slider 34 is slidably connected to the inner wall of the center block 32, and the two threaded rods 40 are threadedly connected to the two sliders 34 respectively.

[0042] Specifically, the driving motor 41 rotates, and drives the two threaded rods 40 to rotate in opposite directions under the transmission of the first bevel gear 42, so that the two sliders 34 move in the direction away from the first connecting strip 35, driving the two movable sleeves 33 away from each other, so that the multiple arc rods 26 move away from each other under the support of the spring 39, and the spacing between adjacent arc rods 26 increases. Similarly, when the driving motor 41 rotates in the opposite direction, it will drive the spacing between adjacent arc rods 26 to decrease.

[0043] In this embodiment, a plurality of suction cups 28 are fixedly installed on the outside of each arc rod 26, and a bronchus 30 is fixedly connected to the outer wall of each arc rod 26. The bronchus 30 is connected to the plurality of suction cups 28 through the air channel provided inside the arc rod 26. The outer wall of the central block 32 is fixedly connected to a trachea connector 29, and the trachea connector 29 is connected to the ends of the plurality of bronchus 30. The outer wall of the trachea connector 29 is fixedly connected to a main air pipe 31, and one end of the main air pipe 31 away from the trachea connector 29 is connected to the inside of the connecting ring 22, and the top of the connecting ring 22 is fixedly connected to a spring hose. 24, the spring hose 24 is connected to the main air pipe 31 through the air channel set inside the connecting ring 22, and one end of the spring hose 24 is connected to the vacuum pump. The air inside the suction cup 28 is extracted through the vacuum pump along the main air pipe 31 and the bronchus 30, so that the suction cups 28 on the multiple arc rods 26 can all adsorb the inner wall of the packaging bag to fix the packaging bag. In addition, during the detection process, if the distance between the multiple limit covers 16 is controlled to be reduced by the driving motor 41, the wear resistance of the packaging bag in a wrinkled state can be simulated, thereby comprehensively testing the wear resistance of the packaging bag.

[0044] In this embodiment, a baffle 43 is fixedly connected to the lower end of the mounting strip 27 , and the baffle 43 is located outside the trachea connector 29 and the bronchus 30 . The setting of the baffle 43 facilitates the packaging bag to be put on the outside of the grabbing structure 23 .

[0045] Working principle: When in use, the packaging bag to be inspected is put on the outside of the grasping structure 23, and then the spacing of the multiple arc rods 26 is controlled to increase to support the packaging bag. The specific operation is that the driving motor 41 rotates, and the two threaded rods 40 are driven to rotate in opposite directions under the transmission of the first bevel gear 42, so that the two sliders 34 move in the direction away from the first connecting strip 35, driving the two movable sleeves 33 away from each other, so that the multiple arc rods 26 are supported by the spring 39 and move away from each other. The spacing of the arc rods 26 increases, and then the air inside the suction cup 28 is extracted along the main airway 31 and the bronchus 30 through the vacuum pump. Thereby, the suction cups 28 on the multiple arc-shaped rods 26 all absorb the inner wall of the packaging bag to fix the packaging bag. After the fixing is completed, the secondary telescopic rod 21 is controlled to extend, so that the connecting ring 22 and the grasping structure 23 move downward as a whole, so that the packaging bag outside the grasping structure 23 can contact the friction ball 4, and the entire packaging bag installation process is completed. During the inspection, the lower rotating rod 6 is driven by the main motor 5 to rotate as a whole, and the transmission frame installed on the lower rotating rod 6 will be movably connected with the inner wall of the annular groove 15 on the friction ball 4, so that the friction ball 4 and the transmission frame can be driven to rotate as a whole along the rotation direction of the lower rotating rod 6, and due to the spur gear 11 and the inner gear ring 8 When the transmission frame rotates, the spur gear 11 will also move along the lower casing 7, so that the spur gear 11 rotates below the limit of the inner gear ring 8, and the spur gear 11 drives the shaft 45 to rotate under the transmission of the second bevel gear 46, and the roller 13 can be rotated under the transmission of the first pulley 47, the transmission belt 48 and the second pulley 49, so that the friction ball 4 is driven by the rotation of the roller 13 to rotate along the annular groove 15 as a whole, so that when the friction strip 14 on the outer side of the friction ball 4 contacts the outer surface of the packaging bag, not only there is lateral friction when the friction ball 4 rotates along the lower rotating rod 6, but also when the friction ball 4 As the whole rotates driven by the roller 13, when the packaging bag is located between the two annular grooves 15, it will be subjected to the force of the friction ball 4 in the up and down directions. When the packaging bag moves to the side of the friction ball 4, it will be subjected to the force of the friction ball 4 carrying the friction strip 14 to rotate along the axis of the annular groove 15, thereby rubbing the packaging bag in all directions, avoiding the dead angle of friction caused by friction in a single direction, and ensuring the effect of the wear resistance test of the packaging bag. In addition, during the test process, if the spacing between the multiple limit covers 16 is controlled to be reduced by the driving motor 41, the wear resistance of the packaging bag in a wrinkled state can be simulated, thereby comprehensively testing the wear resistance of the packaging bag.

[0046] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for testing the wear resistance of the printed surface of a packaging bag, comprising a device body (1), a plurality of legs (3) being fixedly connected to the bottom of the device body (1), and a sliding door (2) being movably connected to the front of the device body (1), characterized in that: The center of the bottom of the device body (1) is rotatably connected to a lower rotating rod (6) via a bearing, the bottom of the device body (1) is fixedly mounted with a main motor (5) via a fixing frame, the output shaft of the main motor (5) is fixedly connected to the lower end of the lower rotating rod (6), the upper end of the lower rotating rod (6) is fixedly connected to a transmission frame, the center of the top of the device body (1) is rotatably connected to an upper rotating rod (17) via a bearing, the top of the upper rotating rod (17) is rotatably connected to a connecting sleeve (19), the connecting sleeve ( The inner wall of the main telescopic rod (19) is fixedly connected to the main telescopic rod (20), the outer wall of the main telescopic rod (20) is fixedly connected to the limit cover (16), the lower end of the limit cover (16) is fixedly connected to the top of the device body (1), the lower end of the upper rotating rod (17) is also fixedly connected to the same transmission frame, a friction ball (4) is arranged inside the device body (1), the friction ball (4) is located between the two transmission frames, and the outer wall of the friction ball (4) is installed with a plurality of evenly distributed friction strips (14); The transmission frame comprises a support block (9), both ends of the support block (9) on a side close to the friction ball (4) are fixedly connected to a connecting frame (12), both ends of each connecting frame (12) are rotatably connected to a roller (13), the outer wall of the friction ball (4) is provided with two annular grooves (15), the roller (13) is movably connected to the inner wall of the annular groove (15), and a transmission device (10) is installed on the side of each support block (9) away from the friction ball (4), the outer wall of the transmission device (10) is transmission-connected to a spur gear (11), and the spur gear (11) is transmission-connected to the roller (13) through the transmission device (10). The device is The bottom of the body (1) is fixedly connected with a lower casing (7), the inner wall of the lower casing (7) is fixedly connected with an inner gear ring (8) meshing with a spur gear (11), the lower casing (7) is covered on the outer side of the lower rotating rod (6), the inner wall of the limit cover (16) is slidably connected with an upper casing (18), the inner wall of the limit cover (16) is provided with a limit groove (50), the outer wall of the upper casing (18) is fixedly connected with a limit block slidably connected with the inner wall of the limit groove (50), the inner wall of the upper casing (18) is also fixedly connected with an inner gear ring (8) meshing with a spur gear (11), and the inner wall of the upper casing (18) is rotatably connected with the upper rotating rod (17) through a bearing; A plurality of secondary telescopic rods (21) are fixedly connected to the top of the device body (1), a connecting ring (22) is fixedly connected to the lower end of the secondary telescopic rod (21), and a plurality of evenly distributed grasping structures (23) are fixedly connected to the bottom of the connecting ring (22).

2. The device for detecting the wear resistance of the printed surface of a packaging bag according to claim 1, characterized in that: The transmission device (10) comprises a mounting shell (44), the interior of the mounting shell (44) is rotatably connected to a shaft (45), both ends of the shaft (45) are fixedly connected to a first pulley (47), the outer wall of the shaft (45) is fixedly connected to a second bevel gear (46), the shaft of the spur gear (11) is rotatably connected to the outer wall of the mounting shell (44), one end of the shaft on the spur gear (11) is fixedly connected to the same second bevel gear (46), and the two second bevel gears (46) are meshed with each other.

3. The device for detecting the wear resistance of the printed surface of a packaging bag according to claim 1, characterized in that: A second pulley (49) is fixedly connected to the roller (13) at one end of each connecting frame (12); a transmission belt (48) is sleeved on the outside of the first pulley (47); and the first pulley (47) is transmission-connected to the second pulley (49) via the transmission belt (48).

4. The device for detecting the wear resistance of the printed surface of a packaging bag according to claim 1, characterized in that: The gripping structure (23) comprises a mounting strip (27) fixedly mounted on the bottom of the connecting ring (22); a driving box (25) is fixedly connected to an outer wall of a side of the mounting strip (27) close to the friction ball (4); a plurality of evenly distributed arc-shaped rods (26) are mounted on an outer wall of a side of the driving box (25) close to the friction ball (4); and the driving box (25) is used to adjust the spacing between the plurality of arc-shaped rods (26).

5. The device for detecting the wear resistance of the printed surface of a packaging bag according to claim 1, characterized in that: The drive box (25) comprises a central block (32) and two movable sleeves (33). The middle of the central block (32) is fixedly connected to the outer wall of the mounting strip (27). The two movable sleeves (33) are respectively sleeved on the two ends of the two central blocks (32). The middle of the central block (32) is fixedly connected to a first connecting strip (35). Both ends of the first connecting strip (35) are fixedly connected to symmetrically distributed telescopic slide rods (37). The extended ends of the two telescopic slide rods (37) are respectively fixedly connected to the inner walls of the two movable sleeves (33). The outside of each telescopic slide rod (37) is sleeved with a plurality of slide sleeves (38). ), the outer walls of the first connecting strip (35), the sliding sleeve (38) and the movable sleeve (33) are all fixedly connected with the second connecting strip (36), the first connecting strip (35) is fixedly connected with the middle arc rod (26) through the second connecting strip (36), the movable sleeve (33) is fixedly connected with the end arc rod (26) through the second connecting strip (36), the sliding sleeve (38) is fixedly connected with the remaining arc rods (26) through the second connecting strip (36), and the outer wall of each telescopic sliding rod (37) is sleeved with a plurality of springs (39) for adjusting the distance between adjacent arc rods (26).

6. The device for detecting the wear resistance of the printed surface of a packaging bag according to claim 5, characterized in that: The outer wall of the center block (32) is fixedly connected to a driving motor (41); both sides of the first connecting bar (35) are rotatably connected to threaded rods (40); one end of each threaded rod (40) located inside the first connecting bar (35) is fixedly connected to a first bevel gear (42); the output shaft of the driving motor (41) extends to the inner side of the first connecting bar (35); the output shaft of the driving motor (41) is fixedly connected to a driving gear meshing with the two first bevel gears (42); a slider (34) is detachably mounted on the inner wall of one side of each movable sleeve (33) close to the center block (32); the outer wall of the slider (34) is slidably connected to the inner wall of the center block (32); and the two threaded rods (40) are respectively threadedly connected to the two sliders (34).

7. The device for detecting the wear resistance of the printed surface of a packaging bag according to claim 1, characterized in that: A plurality of suction cups (28) are fixedly mounted on the outer side of each of the arc-shaped rods (26); the outer wall of each of the arc-shaped rods (26) is fixedly connected to a bronchus (30); the bronchus (30) is connected to the plurality of suction cups (28) via an air passage provided inside the arc-shaped rod (26); the outer wall of the central block (32) is fixedly connected to an air pipe joint (29); the air pipe joint (29) is connected to the ends of the plurality of bronchi (30); the outer wall of the air pipe joint (29) is fixedly connected to a main air pipe (31); one end of the main air pipe (31) away from the air pipe joint (29) is connected to the interior of the connecting ring (22); the top of the connecting ring (22) is fixedly connected to a spring hose (24); the spring hose (24) is connected to the main air pipe (31) via an air passage provided inside the connecting ring (22).

8. The device for detecting the wear resistance of the printed surface of a packaging bag according to claim 1, characterized in that: The lower end of the mounting strip (27) is fixedly connected with a baffle (43), and the baffle (43) is located outside the trachea joint (29) and the bronchus (30).

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