Automatically-adjusted packaging paper folding device and control method thereof

Abstract

The invention relates to the technical field of packaging paper folding, in particular to an automatically-adjusted packaging paper folding device and a control method thereof.The automatically-adjusted packaging paper folding device comprises a first roller, a second roller, a third roller, a fourth roller, a fifth roller, a sixth roller and a photoelectric sensor; the packaging paper can be stably conveyed, the packaging paper is prevented from falling into a gap between the first roller and the second roller, and then the packaging paper can be folded in different positions through the photoelectric sensor and the through hole control principle.

Description

Technical Field

[0001] The invention relates to the technical field of packaging paper folding, and in particular to an automatically adjustable packaging paper folding device and a control method. Background Art

[0002] The Chinese patent with authorization announcement number CN101708665A discloses a novel automatic photo paper folding device, which specifically discloses that the horizontal channel is a channel formed by upper and lower paper guides arranged side by side, the vertical channel is a channel formed by front and rear paper guides arranged side by side, and three paper feeding roller groups respectively realize rolling action through the through-port structures arranged on the paper guides. The lower paper guide includes a front paper guide and a rear paper guide, and the front paper guide and the front paper guide, the rear paper guide and the rear paper guide are all integrally formed bending structures. Although the patent can fold the packaging paper, one end of the packaging paper can easily fall into the vertical channel during the transportation process of the packaging paper, so that the packaging paper cannot be folded. Therefore, there is an urgent need for an automatically adjustable packaging paper folding device and a control method thereof, which can fold the packaging paper efficiently and stably. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an automatically adjustable packaging paper folding device and a control method thereof, which can fold the packaging paper efficiently and stably.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an automatically adjusted packaging paper folding device and a control method thereof, based on the packaging paper folding device comprising:

[0005] Pedestal;

[0006] A first conveyor belt, the first conveyor belt is connected to the base, and the conveying direction of the first conveyor belt is an X direction;

[0007] A folding platform, wherein the starting end of the folding platform is connected to the end of the first conveyor belt, a strip opening is provided on the folding platform, a rotating first conveying roller assembly is provided in the strip opening, the first conveying roller assembly comprises a first roller and a second roller, the first roller and the second roller are sequentially arranged along the X direction, a first gap exists between the first roller and the second roller, and the upper edges of the first roller and the second roller are at the same height as the folding platform;

[0008] a second conveying roller assembly, the second conveying roller assembly is connected to the folding platform, the second conveying roller assembly is located on the opposite side of the first conveying roller assembly in the X direction, the second conveying roller assembly includes a third roller and a fourth roller, the third roller and the fourth roller are arranged up and down, the upper edge height of the third roller is at the same height as the folding platform, a second gap exists between the third roller and the fourth roller, the third roller and the fourth roller rotate in opposite directions, and the first roller and the third roller rotate in the same direction;

[0009] a third conveying roller assembly, the third conveying roller assembly is connected to the folding platform, the third conveying roller assembly is located on the X side of the first conveying roller assembly, the third conveying roller assembly includes a fifth roller and a sixth roller, the fifth roller and the sixth roller are arranged up and down, the upper edge height of the fifth roller is at the same height as the folding platform, there is a third gap between the fifth roller and the sixth roller, and the rotation direction of the second roller is the same as the rotation direction of the fifth roller;

[0010] A driving mechanism, the driving mechanism is used to drive the third roller and the fifth roller to rotate in the same direction or in opposite directions;

[0011] A folding plate, the folding plate is located directly above the first gap, and the folding plate is movably connected to the folding platform along a vertical direction;

[0012] A driving member, the driving member is used to drive the folding plate to move;

[0013] A seventh roller, the seventh roller is rotatably connected to the folding platform, the seventh roller is located directly below the first roller, the seventh roller is parallel to the first roller, and the seventh roller is transmission-connected to the first roller through a plurality of first belts;

[0014] The eighth roller is rotatably connected to the folding platform, the eighth roller is located directly below the second roller, the eighth roller is parallel to the second roller, and the eighth tube is connected to the second roller through a plurality of second belts;

[0015] A second conveyor belt, the starting end of the second conveyor belt is below the eighth roller, and the conveying direction of the lower edge of the second conveyor belt is the X direction;

[0016] a third conveyor belt, wherein the end of the third conveyor belt is flush with the end of the second conveyor belt, the starting end of the third conveyor belt is located on the X-direction side of the eighth conveyor roller, the conveying direction of the upper edge of the third conveyor belt is the X-direction, and there is a fourth gap between the upper edge of the third conveyor belt and the lower edge of the second conveyor belt;

[0017] The control method of the packaging paper folding device comprises the following steps:

[0018] Step 1: Put the packaging paper on the first conveyor belt, and at the same time, the driving mechanism drives the third roller and the fifth roller to rotate in the same direction. The first conveyor belt sends the packaging paper from the end of the first conveyor belt to the folding platform, and the first roller, the second roller, the third roller, the fourth roller, the fifth roller and the sixth roller on the folding platform rotate to make the packaging paper pass through the second gap and the third gap;

[0019] Step 2, when the packaging paper reaches the designated folding device, that is, when the folding device is located above the first gap, the driving mechanism drives the third roller to rotate clockwise and the fifth roller to rotate counterclockwise, and at the same time, the driving member drives the folding plate to squeeze the folding device of the packaging paper into the first gap, and at the same time, the third roller and the fifth roller rotate in opposite directions to make the packaging paper transported and squeezed toward the first gap, and then the first roller and the second roller rotate in opposite directions to transport the packaging paper toward the first gap, squeezed and folded;

[0020] Step 3: Turn on the second conveyor belt and the third conveyor belt, and the packaging paper squeezed from the first gap passes through the starting end of the second conveyor belt and enters the fourth gap. Finally, the packaging paper is transported to the end of the second conveyor belt and the end of the third conveyor belt through the lower edge of the second conveyor belt and the upper edge of the third conveyor belt.

[0021] Further, the driving mechanism includes a first grinding wheel, a second grinding wheel, a third grinding wheel, a fourth grinding wheel, a fifth grinding wheel, a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a sixth gear, a third pulley, a fourth belt, a first cylinder, a second cylinder, a first driving motor and a second driving motor; the first grinding wheel is coaxially connected to the output shaft of the third roller, the second grinding wheel is coaxially connected to the conveying shaft of the fifth roller, the third grinding wheel is located on the same side as the first grinding wheel and the second grinding wheel, the first cylinder is connected to the base, the first cylinder is located on the Y-direction side between the first grinding wheel and the second grinding wheel, the cylinder body of the first cylinder is axially in the Y-direction, a first connecting plate is provided on the piston rod of the first cylinder, the third grinding wheel is rotatably connected to the first connecting plate, the rotation direction of the third grinding wheel is opposite to the rotation direction of the first grinding wheel, the axial direction of the third grinding wheel is parallel to the first grinding wheel, the first driving motor is connected to the first connecting plate, the first driving motor is drivingly connected to the third grinding wheel, the second cylinder is connected to the base, the second cylinder is located on the Y-direction opposite side between the first grinding wheel and the second grinding wheel, the second cylinder The cylinder body of the cylinder is axially in the Y direction, a second connecting plate is provided on the piston rod of the second cylinder, the fourth grinding wheel is rotatably connected to the second connecting plate, the rotation direction of the fourth grinding wheel is opposite to that of the first grinding wheel, the fifth grinding wheel is rotatably connected to the second connecting plate, the fourth grinding wheel and the fifth grinding wheel are frictionally driven, the fourth grinding wheel and the fifth grinding wheel rotate in opposite directions, the axial directions of the fourth grinding wheel and the fifth grinding wheel are parallel to the first grinding wheel, the first gear is coaxially connected to the output shaft of the fourth grinding wheel, the second gear is coaxially connected to the output shaft of the fifth grinding wheel, the first gear and the second gear are meshed, the second drive motor is connected to the second connecting plate, the second drive motor is connected to the fourth grinding wheel, the third gear is coaxially connected to the output shaft of the third roller, the fourth gear is coaxially connected to the output shaft of the fourth roller, the third gear and the fourth gear are meshed, the fifth gear is coaxially connected to the output shaft of the fifth roller, the sixth gear is coaxially connected to the output shaft of the sixth roller, the fifth gear is meshed with the sixth gear, the first roller is connected to the third roller through a third belt, and the second roller is connected to the fifth roller through a fourth belt;

[0022] The first cylinder and the second cylinder drive the third grinding wheel, the fourth grinding wheel and the fifth grinding wheel to switch between the first state and the second state;

[0023] In the first state, the third grinding wheel is frictionally driven with the first grinding wheel and the second grinding wheel, so that the first roller, the second roller, the third roller and the fourth roller can rotate in the same direction;

[0024] In the second state, the fourth grinding wheel and the first grinding wheel are frictionally driven, and the fifth grinding wheel and the second grinding wheel are frictionally driven, so that the third roller and the fifth roller can rotate oppositely, and further the first roller and the second roller can rotate oppositely.

[0025] Further, the driving member is a third cylinder.

[0026] Furthermore, a photoelectric sensor is provided above the first conveyor belt. In step 1, the packaging paper is conveyed on the first conveyor belt. When the photoelectric sensor senses the front end of the packaging paper, the first conveyor belt stops after the first conveyor belt continues to convey for a time T, and the third roller and the fifth roller stop rotating; T = (S + b) / V, b is the distance from the front end of the preset packaging paper to the folding device, V is the conveying speed of the first conveyor belt, T is the time when the preset packaging paper folding device reaches the first gap, and S is the distance from the sensing position of the photoelectric sensor to the first gap.

[0027] Furthermore, two groups of limiting devices are provided on the folding platform, one group of limiting devices is located on the opposite side of the third roller in the X direction, and one group of limiting devices is located on the X side of the fifth roller. The limiting devices include two limiting rods arranged at equal intervals in the Y direction, and the limiting rods are perpendicular to the folding platform.

[0028] The beneficial effect of the present invention is that, compared with the prior art, by placing the upper edges of the first roller, the second roller, the third roller and the fourth roller at the same height as the folding platform, the stable transportation of the packaging paper is ensured, thereby enabling the packaging paper to be folded efficiently and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an automatically adjustable packaging paper folding device according to a specific embodiment of the present invention;

[0030] Figure 2 for Figure 1 A magnified view of part A;

[0031] Figure 3 It is a side view of an automatically adjustable packaging paper folding device according to a specific embodiment of the present invention;

[0032] Figure 4 for Figure 3 A-direction cross-sectional view.

[0033] Description of labels:

[0034] 1. base; 11. first cylinder; 111. first connecting plate; 12. second cylinder; 121. second connecting plate; 13. limiting device; 131. limiting rod;

[0035] 2. First conveyor belt; 21. Photoelectric sensor;

[0036] 3. folding platform; 31. strip opening; 32. first conveying roller assembly; 321. first roller; 322. second roller;

[0037] 4. second conveying roller assembly; 41. third roller; 42. fourth roller;

[0038] 5. third conveying roller assembly; 51. fifth roller; 52. sixth roller;

[0039] 6. Driving mechanism; 61. First grinding wheel; 62. Second grinding wheel; 63. Third grinding wheel; 64. Fourth grinding wheel; 65. Fifth grinding wheel; 66. First gear; 67. Second gear; 68. Third gear; 69. Fourth gear; 70. Fifth gear; 701. Sixth gear; 702. Third belt; 703. Fourth belt; 704. First driving motor; 705. Second driving motor;

[0040] 7. Folding board;

[0041] 8. Third cylinder;

[0042] 9. seventh roller; 91. first belt;

[0043] 10. Eighth roller; 1011. Second belt;

[0044] 101, second conveyor belt;

[0045] 102. The third conveyor belt. DETAILED DESCRIPTION

[0046] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0047] Please refer to Figures 1 to 4 , an automatically adjustable packaging paper folding device and a control method thereof, based on the packaging paper folding device comprising:

[0048] Base 1;

[0049] A first conveyor belt 2, the first conveyor belt 2 is connected to the base 1, and the conveying direction of the first conveyor belt 2 is an X direction;

[0050] A folding platform 3, the starting end of the folding platform 3 is connected to the end of the first conveyor belt 2, a strip opening 31 is provided on the folding platform 3, a rotating first conveying roller assembly 32 is provided in the strip opening 31, the first conveying roller assembly 32 includes a first roller 321 and a second roller 322, the first roller 321 and the second roller 322 are sequentially arranged along the X direction, a first gap exists between the first roller 321 and the second roller 322, and the upper edges of the first roller 321 and the second roller 322 are at the same height as the folding platform 3;

[0051] The second conveying roller assembly 4 is connected to the folding platform 3. The second conveying roller assembly 4 is located on the opposite side of the first conveying roller assembly 32 in the X direction. The second conveying roller assembly 4 includes a third roller 41 and a fourth roller 42. The third roller 41 and the fourth roller 42 are arranged up and down. The upper edge height of the third roller 41 is at the same height as the folding platform 3. There is a second gap between the third roller 41 and the fourth roller 42. The third roller 41 and the fourth roller 42 rotate in opposite directions. The first roller 321 and the third roller 41 rotate in the same direction.

[0052] The third conveying roller assembly 5 is connected to the folding platform 3. The third conveying roller assembly 5 is located on the X-direction side of the first conveying roller assembly 32. The third conveying roller assembly 5 includes a fifth roller 51 and a sixth roller 52. The fifth roller 51 and the sixth roller 52 are arranged up and down. The upper edge height of the fifth roller 51 is at the same height as the folding platform 3. There is a third gap between the fifth roller 51 and the sixth roller 52. The rotation direction of the second roller 322 is the same as the rotation direction of the fifth roller 51.

[0053] The driving mechanism 6 is used to drive the third roller 41 and the fifth roller 51 to rotate in the same direction or in the opposite direction;

[0054] A folding plate 7, which is located directly above the first gap and is movably connected to the folding platform 3 along a vertical direction;

[0055] A driving member, the driving member is used to drive the folding plate 7 to move;

[0056] The seventh roller 9 is rotatably connected to the folding platform 3, the seventh roller 9 is located directly below the first roller 321, the seventh roller 9 is parallel to the first roller 321, and the seventh roller 9 is connected to the first roller 321 through a plurality of first belts 91;

[0057] The eighth roller 10 is rotatably connected to the folding platform 3, the eighth roller 10 is located directly below the second roller 322, the eighth roller 10 is parallel to the second roller 322, and the eighth tube is connected to the second roller 322 through a plurality of second belts 1011;

[0058] The second conveyor belt 101, the starting end of the second conveyor belt 101 is below the eighth roller 10, and the conveying direction of the lower edge of the second conveyor belt 101 is the X direction;

[0059] a third conveyor belt 102, wherein the end of the third conveyor belt 102 is flush with the end of the second conveyor belt 101, the starting end of the third conveyor belt 102 is located on the X-direction side of the eighth conveyor roller, the conveying direction of the upper edge of the third conveyor belt 102 is the X-direction, and there is a fourth gap between the upper edge of the third conveyor belt 102 and the lower edge of the second conveyor belt 101;

[0060] The control method of the packaging paper folding device comprises the following steps:

[0061] Step 1: Put the packaging paper on the first conveyor belt 2, and at the same time, the driving mechanism 6 drives the third roller 41 and the fifth roller 51 to rotate in the same direction, and the first conveyor belt 2 sends the packaging paper from the end of the first conveyor belt 2 to the folding platform 3, and the first roller 321, the second roller 322, the third roller 41, the fourth roller 42, the fifth roller 51 and the sixth roller 52 on the folding platform 3 rotate to make the packaging paper pass through the second gap and the third gap;

[0062] Step 2, when the packaging paper reaches the designated folding device, that is, when the folding device is located above the first gap, the driving mechanism 6 drives the third roller 41 to rotate clockwise, and the fifth roller 51 to rotate counterclockwise, and at the same time, the driving member drives the folding plate 7 to squeeze the folding device of the packaging paper into the first gap, and at the same time, the third roller 41 and the fifth roller 51 rotate in opposite directions to make the packaging paper transported and squeezed toward the first gap, and then the first roller 321 and the second roller 322 rotate in opposite directions to transport the packaging paper toward the first gap, squeeze and fold it;

[0063] Step 3: Turn on the second conveyor belt 101 and the third conveyor belt. The packaging paper squeezed from the first gap passes through the starting end of the second conveyor belt 101 and enters the fourth gap. Finally, the packaging paper is transported to the end of the second conveyor belt 101 and the end of the third conveyor belt 102 through the lower edge of the second conveyor belt 101 and the upper edge of the third conveyor belt 102.

[0064] In the above embodiment, when the wrapping paper is placed in the first conveyor belt 2 for conveying, when the wrapping paper reaches the starting end of the folding platform 3 from the end of the first conveyor belt 2, since the upper edge of the third roller 41 is at the same height as the folding platform 3, the wrapping paper passes through the second gap, and the wrapping paper is continuously conveyed by the rotation of the third roller 41. Since the upper edges of the first roller 321 and the second roller 322 are flush with the folding platform 3, the front end of the wrapping paper will not fall into the first gap, and the wrapping paper is continuously conveyed by the rotation of the first roller 321 and the second roller 322. Since the upper edge of the fifth roller 51 is flush with the upper edge of the folding platform 3, the wrapping paper is continuously conveyed to the third gap. When the wrapping paper reaches the specified position, the wrapping paper is folded along the first gap by using the opposite rotation directions of the third roller 41 and the fifth roller 51, the opposite rotation directions of the first roller 321 and the second roller 322, and the downward pressure of the folding plate 7.

[0065] As an optional embodiment, the driving mechanism 6 includes a first grinding wheel 61, a second grinding wheel 62, a third grinding wheel 63, a fourth grinding wheel 64, a fifth grinding wheel 65, a first gear 66, a second gear 67, a third gear 68, a fourth gear 69, a fifth gear 70, a sixth gear 701, a third belt 702 wheel, a fourth belt 703, a first cylinder 11, a second cylinder 12, a first drive motor 704 and a second drive motor 705;

[0066] The first grinding wheel 61 is coaxially connected to the output shaft of the third roller 41, the second grinding wheel 62 is coaxially connected to the conveying shaft of the fifth roller 51, the third grinding wheel 63 is located on the same side as the first grinding wheel 61 and the second grinding wheel 62, the first cylinder 11 is connected to the base 1, the first cylinder 11 is located on the Y-direction side between the first grinding wheel 61 and the second grinding wheel 62, the cylinder body of the first cylinder 11 is axially in the Y-direction, a first connecting plate 111 is provided on the piston rod of the first cylinder 11, the third grinding wheel 63 is rotatably connected to the first connecting plate 111, and the rotation direction of the third grinding wheel 63 is the same as that of the first grinding wheel 61 has an opposite rotation direction, the axial direction of the third grinding wheel 63 is parallel to the first grinding wheel 61, the first drive motor 704 is connected to the first connecting plate 111, the first drive motor 704 is in transmission connection with the third grinding wheel 63, the second cylinder 12 is connected to the base 1, the second cylinder 12 is located on the Y-direction opposite side between the first grinding wheel 61 and the second grinding wheel 62, the cylinder body of the second cylinder 12 has an axial direction in the Y direction, a second connecting plate 121 is provided on the piston rod of the second cylinder 12, the fourth grinding wheel 64 is rotatably connected to the second connecting plate 121, and the rotation direction of the fourth grinding wheel 64 is the same as that of the first grinding wheel 61. The first grinding wheel 61 rotates in opposite directions, the fifth grinding wheel 65 is rotatably connected to the second connecting plate 121, the fourth grinding wheel 64 and the fifth grinding wheel 65 are frictionally driven, the fourth grinding wheel 64 and the fifth grinding wheel 65 rotate in opposite directions, the axial directions of the fourth grinding wheel 64 and the fifth grinding wheel 65 are parallel to the first grinding wheel 61, the first gear 66 is coaxially connected to the output shaft of the fourth grinding wheel 64, the second gear 67 is coaxially connected to the output shaft of the fifth grinding wheel 65, the first gear 66 and the second gear 67 are meshed, the second drive motor 705 is connected to the second connecting plate 121, and the second drive The motor 705 is connected to the fourth grinding wheel 64 by transmission, the third gear 68 is coaxially connected to the output shaft of the third roller 41, the fourth gear 69 is coaxially connected to the output shaft of the fourth roller 42, the third gear 68 and the fourth gear 69 are meshed, the fifth gear 70 is coaxially connected to the output shaft of the fifth roller 51, the sixth gear 701 is coaxially connected to the output shaft of the sixth roller 52, the fifth gear 70 and the sixth gear 701 are meshed, the first roller 321 is connected to the third roller 41 by transmission through the third belt 702, and the second roller 322 is connected to the fifth roller 51 by transmission through the fourth belt 703;

[0067] The first cylinder 11 and the second cylinder 12 drive the third grinding wheel 63, the fourth grinding wheel 64 and the fifth grinding wheel 65 to switch between the first state and the second state;

[0068] In the first state, the third grinding wheel 63 is frictionally driven with the first grinding wheel 61 and the second grinding wheel 62, so that the first roller 321, the second roller 322, the third roller 41 and the fourth roller 42 can rotate in the same direction;

[0069] In the second state, the fourth grinding wheel 64 and the first grinding wheel 61 are frictionally driven, and the fifth grinding wheel 65 and the second grinding wheel 62 are frictionally driven, so that the third roller 41 and the fifth roller 51 can rotate oppositely, and further the first roller 321 and the second roller 322 can rotate oppositely.

[0070] In the above embodiment, the third grinding wheel 63 is driven by the first cylinder 11 to frictionally transmit with the first grinding wheel 61 and the second grinding wheel 62, so that the third roller 41 and the fifth roller 51 can be driven to rotate in the same direction, the third roller 41 rotates the first roller through the third belt 702, and the fifth roller 51 rotates the second roller 322 through the fourth belt 703, so that the packaging paper can be transported to the third gap, and then the fourth grinding wheel 64 is driven by the second cylinder 12 to frictionally transmit with the first grinding wheel 61, and the fifth grinding wheel 65 is frictionally transmitted with the second grinding wheel 62, so that the third roller 41 and the fifth roller 51 can rotate in opposite directions, and the first roller 321 and the second roller 322 can rotate in opposite directions, so that the two ends of the packaging paper can be squeezed toward the first gap, thereby ensuring that the packaging paper is folded in half.

[0071] As an optional implementation, the driving member is the third cylinder 8 .

[0072] As an optional embodiment, a photoelectric sensor 21 is provided above the first conveyor belt 2. In step 1, the packaging paper is conveyed on the first conveyor belt 2. When the photoelectric sensor 21 senses the front end of the packaging paper, the first conveyor belt 2 continues to convey for a time T, then the first conveyor belt 2 stops, and the third roller 41 and the fifth roller 51 stop rotating; T = (S + b) / V, b is the distance from the front end of the preset packaging paper to the folding device, V is the conveying speed of the first conveyor belt 2, T is the time when the preset packaging paper folding device reaches the first gap, and S is the distance from the sensing position of the photoelectric sensor 21 to the first gap.

[0073] In the above implementation mode, since the conveying speed V of the first conveyor belt 2 is constant, the delayed conveying time T of the first conveyor belt 2 can be obtained by the formula T=(S+b) / V. When the same batch of packaging paper is folded at different positions, the prior art sets a photoelectric sensor 21 above the front end of the packaging paper to stop the packaging paper when the packaging paper reaches the folding device. When the folding device of the packaging paper changes, the photoelectric sensor 21 needs to be moved by the screw guide rail, which not only wastes time but also increases costs. In addition, when the packaging paper reaches the folding device, the photoelectric sensor 21 obtains the sensing signal and controls the first conveyor belt 2 to act, which has a certain delay time, which will cause the inaccuracy of the folding device. , and the present application adjusts the difference of the packaging paper folding device by presetting the delayed conveying time, that is, the time when the packaging paper folding device reaches the first gap, which can save costs on the one hand, and stop immediately when the packaging paper reaches the folding device on the other hand, thereby improving the accuracy of the folding. In specific embodiment 1, it is necessary to fold the same batch of packaging papers with a length of 2 meters at different positions. It is assumed that the distance from the front end of the packaging paper to the folding device for the first packaging paper to be folded is 0.5, that is, b is 0.5 meters, and the distance from the front end of the packaging paper to the folding device for the second packaging paper to be folded is 1 meter, that is, b is 1 meter. The delay time T for the first conveyor belt 2 to continue conveying can be calculated by the formula T=(S+b) / V.

[0074] As an optional embodiment, two groups of limiting devices 13 are provided on the folding platform 3, one group of limiting devices 13 is located on the opposite side of the third roller 41 in the X direction, and one group of limiting devices 13 is located on the X side of the fifth roller 51. The limiting device 13 includes two limiting rods 131 arranged at equal intervals in sequence along the Y direction, and the limiting rods 131 are perpendicular to the folding platform 3.

[0075] In the above embodiment, by providing two limiting rods 131, the wide end of the wrapping paper can be limited, so that the wrapping paper can be better conveyed and folded in half.

[0076] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatically adjustable packaging paper folding device and a control method thereof, characterized in that: The packaging paper folding device includes: Pedestal; A first conveyor belt, the first conveyor belt is connected to the base, and the conveying direction of the first conveyor belt is an X direction; A folding platform, wherein the starting end of the folding platform is connected to the end of the first conveyor belt, a strip opening is provided on the folding platform, a rotating first conveying roller assembly is provided in the strip opening, the first conveying roller assembly comprises a first roller and a second roller, the first roller and the second roller are sequentially arranged along the X direction, a first gap exists between the first roller and the second roller, and the upper edges of the first roller and the second roller are at the same height as the folding platform; a second conveying roller assembly, the second conveying roller assembly is connected to the folding platform, the second conveying roller assembly is located on the opposite side of the first conveying roller assembly in the X direction, the second conveying roller assembly includes a third roller and a fourth roller, the third roller and the fourth roller are arranged up and down, the upper edge height of the third roller is at the same height as the folding platform, a second gap exists between the third roller and the fourth roller, the third roller and the fourth roller rotate in opposite directions, and the first roller and the third roller rotate in the same direction; a third conveying roller assembly, the third conveying roller assembly is connected to the folding platform, the third conveying roller assembly is located on the X side of the first conveying roller assembly, the third conveying roller assembly includes a fifth roller and a sixth roller, the fifth roller and the sixth roller are arranged up and down, the upper edge height of the fifth roller is at the same height as the folding platform, there is a third gap between the fifth roller and the sixth roller, and the rotation direction of the second roller is the same as the rotation direction of the fifth roller; A driving mechanism, the driving mechanism is used to drive the third roller and the fifth roller to rotate in the same direction or in opposite directions; A folding plate, the folding plate is located directly above the first gap, and the folding plate is movably connected to the folding platform along a vertical direction; A driving member, the driving member is used to drive the folding plate to move; A seventh roller, the seventh roller is rotatably connected to the folding platform, the seventh roller is located directly below the first roller, the seventh roller is parallel to the first roller, and the seventh roller is transmission-connected to the first roller through a plurality of first belts; The eighth roller is rotatably connected to the folding platform, the eighth roller is located directly below the second roller, the eighth roller is parallel to the second roller, and the eighth tube is connected to the second roller through a plurality of second belts; A second conveyor belt, the starting end of the second conveyor belt is below the eighth roller, and the conveying direction of the lower edge of the second conveyor belt is the X direction; a third conveyor belt, wherein the end of the third conveyor belt is flush with the end of the second conveyor belt, the starting end of the third conveyor belt is located on the X-direction side of the eighth conveyor roller, the conveying direction of the upper edge of the third conveyor belt is the X-direction, and there is a fourth gap between the upper edge of the third conveyor belt and the lower edge of the second conveyor belt; The control method of the packaging paper folding device comprises the following steps: Step 1: Put the packaging paper on the first conveyor belt, and at the same time, the driving mechanism drives the third roller and the fifth roller to rotate in the same direction. The first conveyor belt sends the packaging paper from the end of the first conveyor belt to the folding platform, and the first roller, the second roller, the third roller, the fourth roller, the fifth roller and the sixth roller on the folding platform rotate to make the packaging paper pass through the second gap and the third gap; Step 2, when the packaging paper reaches the designated folding device, that is, when the folding device is located above the first gap, the driving mechanism drives the third roller to rotate clockwise and the fifth roller to rotate counterclockwise, and at the same time, the driving member drives the folding plate to squeeze the folding device of the packaging paper into the first gap, and at the same time, the third roller and the fifth roller rotate in opposite directions to make the packaging paper transported and squeezed toward the first gap, and then the first roller and the second roller rotate in opposite directions to transport the packaging paper toward the first gap, squeezed and folded; Step 3: Turn on the second conveyor belt and the third conveyor belt, and the packaging paper squeezed from the first gap passes through the starting end of the second conveyor belt and enters the fourth gap. Finally, the packaging paper is transported to the end of the second conveyor belt and the end of the third conveyor belt through the lower edge of the second conveyor belt and the upper edge of the third conveyor belt.

2. The automatic adjustment packaging paper folding device and control method thereof according to claim 1, characterized in that: The driving mechanism includes a first grinding wheel, a second grinding wheel, a third grinding wheel, a fourth grinding wheel, a fifth grinding wheel, a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a sixth gear, a third pulley, a fourth belt, a first cylinder, a second cylinder, a first driving motor and a second driving motor; The first grinding wheel is coaxially connected to the output shaft of the third roller, the second grinding wheel is coaxially connected to the conveying shaft of the fifth roller, the third grinding wheel is located on the same side as the first grinding wheel and the second grinding wheel, the first cylinder is connected to the base, the first cylinder is located on the Y-direction side between the first grinding wheel and the second grinding wheel, the cylinder body of the first cylinder is axially in the Y-direction, a first connecting plate is provided on the piston rod of the first cylinder, the third grinding wheel is rotatably connected to the first connecting plate, the rotation direction of the third grinding wheel is opposite to the rotation direction of the first grinding wheel, the axial direction of the third grinding wheel is parallel to the first grinding wheel, the first drive motor is connected to the first connecting plate, the first drive motor is transmission-connected to the third grinding wheel, the second cylinder is connected to the base, the second cylinder is located on the Y-direction opposite side between the first grinding wheel and the second grinding wheel, the cylinder body of the second cylinder is axially in the Y-direction, a second connecting plate is provided on the piston rod of the second cylinder, the fourth grinding wheel is rotatably connected to the second connecting plate, the The rotation direction is opposite to that of the first grinding wheel. The fifth grinding wheel is rotatably connected to the second connecting plate. The fourth grinding wheel and the fifth grinding wheel are frictionally driven. The fourth grinding wheel and the fifth grinding wheel rotate in opposite directions. The axes of the fourth grinding wheel and the fifth grinding wheel are parallel to the first grinding wheel. The first gear is coaxially connected to the output shaft of the fourth grinding wheel, the second gear is coaxially connected to the output shaft of the fifth grinding wheel, the first gear and the second gear are meshed, the second drive motor is connected to the second connecting plate, the second drive motor is transmission connected to the fourth grinding wheel, the third gear is coaxially connected to the output shaft of the third roller, the fourth gear is coaxially connected to the output shaft of the fourth roller, the third gear and the fourth gear are meshed, the fifth gear is coaxially connected to the output shaft of the fifth roller, the sixth gear is coaxially connected to the output shaft of the sixth roller, the fifth gear is meshed with the sixth gear, the first roller is transmission connected to the third roller through the third belt, and the second roller is transmission connected to the fifth roller through the fourth belt; The first cylinder and the second cylinder drive the third grinding wheel, the fourth grinding wheel and the fifth grinding wheel to switch between the first state and the second state; In the first state, the third grinding wheel is frictionally driven with the first grinding wheel and the second grinding wheel, so that the first roller, the second roller, the third roller and the fourth roller can rotate in the same direction; In the second state, the fourth grinding wheel and the first grinding wheel are frictionally driven, and the fifth grinding wheel and the second grinding wheel are frictionally driven, so that the third roller and the fifth roller can rotate oppositely, and further the first roller and the second roller can rotate oppositely.

3. The automatic adjustment packaging paper folding device and control method thereof according to claim 1, characterized in that: The driving member is the third cylinder.

4. The automatic adjustment packaging paper folding device and control method thereof according to claim 1, characterized in that: A photoelectric sensor is provided above the first conveyor belt. In step 1, the packaging paper is conveyed on the first conveyor belt. When the photoelectric sensor senses the front end of the packaging paper, the first conveyor belt continues to convey for a time T, then the first conveyor belt stops, and the third roller and the fifth roller stop rotating; T = (S + b) / V, b is the preset distance from the front end of the packaging paper to the folding device, V is the conveying speed of the first conveyor belt, T is the preset time for the packaging paper folding device to reach the first gap, and S is the distance from the sensing position of the photoelectric sensor to the first gap.

5. The automatic adjustment packaging paper folding device and control method thereof according to claim 1, characterized in that: Two sets of limit devices are provided on the folding platform, one set of limit devices is located on the opposite side of the third roller in the X direction, and one set of limit devices is located on the X side of the fifth roller. The limit devices include two limit rods arranged at equal intervals in the Y direction, and the limit rods are perpendicular to the folding platform.

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