Ton bag opening deviation rectifying device

Abstract

A ton bag opening deviation rectifying device belongs to the field of packaging machinery and comprises a machine frame, a machine vision system is arranged above the front portion of the machine frame, a longitudinal translation mechanism is arranged on the machine frame, a transverse translation mechanism is arranged on a transferring frame of the longitudinal translation mechanism, a swing mechanism is arranged on a transverse moving frame of the transverse translation mechanism, and a rotating frame is arranged on the swing mechanism. A supporting plate for supporting ton bags is arranged at the upper end of the rotating frame, the rotating mechanism drives the rotating frame and the supporting plate to rotate in the horizontal plane, the machine vision system recognizes and positions bag opening positioning color blocks on the ton bags below so as to determine the position deviation of the bag openings of the ton bags, and the machine vision system controls actions of the longitudinal translation mechanism, the transverse translation mechanism and the rotating mechanism. And the bag opening of the ton bag A with the position deviation is adjusted to the target position. According to the ton bag opening deviation rectifying device, the positions of bag openings of ton bags can be accurately rectified before the bags are opened, so that the bag opening conditions are met, the bag opening rate of the whole stack of ton bags is greatly improved, and the packaging efficiency of equipment is improved.

Description

Technical Field

[0001] The utility model relates to a deviation-correcting device for a ton bag mouth, belonging to the field of packaging machinery. Background Art

[0002] The patent application document with application number 202420038268.3 discloses a device for taking and opening ton bags, and the ton bags suitable for the device are as follows: Figure 4 As shown, the ton bags A are folded together to form a square, and the feeding cylinder B of the ton bag A is folded on the upper end surface of the empty bag, and a bag opening positioning color block C is provided on the upper bag opening of the feeding cylinder B; the device uses a bag taking mechanism to absorb the ton bag A stacked on the ton bag conveyor, and then transfers the ton bag A to the shaping mechanism, and then the machine vision system identifies and locates the bag opening positioning color block C of the ton bag A below, and opens the ton bag A that meets the bag opening conditions, and removes the ton bag that does not meet the bag opening conditions; the device can identify the state of the ton bag in advance and reduce the failure rate of bag opening, but due to the manual stacking of the ton bag A, the stacking shape of the ton bag A is irregular, resulting in an increase in the probability of the ton bag A being removed from the line due to failure to meet the bag opening conditions after subsequent identification, which greatly reduces the bag opening rate of the entire stack of ton bags and affects the packaging efficiency. Utility Model Content

[0003] In order to solve the problem of low bag opening rate and affecting packaging efficiency when ton bag A is packaged, the utility model provides a ton bag mouth correction device, which includes a frame 1, a machine vision system 6 is arranged on the upper front part of the frame 1, a longitudinal translation mechanism 2 is arranged on the frame 1, a transverse translation mechanism 3 is arranged on the transfer frame 21 of the longitudinal translation mechanism 2, a slewing mechanism 4 is arranged on the transverse movement frame 31 of the slewing mechanism 3, a rotating frame 9 is arranged on the slewing mechanism 4, a rotating frame 9 is arranged on the rotating mechanism 4, a support plate 5 for supporting the ton bag A is arranged on the upper end of the rotating frame 9, the slewing mechanism 4 drives the rotating frame 9 and the support plate 5 to rotate in a horizontal plane, the machine vision system 6 identifies and positions the bag mouth positioning color block C on the ton bag A below, thereby determining the position deviation of the bag mouth of the ton bag A, and the machine vision system 6 can control the actions of the longitudinal translation mechanism 2, the transverse translation mechanism 3 and the slewing mechanism 4 to adjust the bag mouth of the ton bag A with position deviation to the target position.

[0004] A bag pushing plate 7 is provided on the upper left side of the supporting plate 5 . The bag pushing plate 7 is driven by a bag pushing cylinder 8 to achieve left and right horizontal movement. The bag pushing cylinder 8 is connected to the lower end of the rotating frame 9 .

[0005] The machine vision system 6 is provided with a camera 62 .

[0006] A light shield is disposed outside the camera 62, and the camera 62 is fixed to the upper end of the light shield.

[0007] A fill light 63 is also provided inside the light shield.

[0008] The light-shielding cover includes a fixed light-shielding cover 61. The upper end inside the fixed light-shielding cover 61 is connected to the camera 62. A movable light-shielding cover 65 is provided on the lower outer wall of the fixed light-shielding cover 61. The movable light-shielding cover 65 is driven by a lifting cylinder 64 to move up and down. The cylinder body of the lifting cylinder 64 is hinged to the fixed light-shielding cover 61.

[0009] The working principle of the present utility model is as follows:

[0010] A. The external bag-taking mechanism transfers the ton bag A to the pallet 5. The longitudinal translation mechanism 2 drives the ton bag A to move forward, so that the bag opening of the ton bag A is directly below the fixed light-shielding cover 61 and reaches the recognition area.

[0011] B. The lifting cylinder 64 drives the movable light-shielding cover 65 to descend vertically, so that the bottom end of the movable light-shielding cover 65 fits the ton bag A. The machine vision system 6 recognizes the bag-opening positioning color block C on the lower ton bag A. After confirming the position coordinates of the bag-opening positioning color block C, the movable light-shielding cover 65 returns to the initial position. After the system calculates the deviation based on the position coordinate data and the set target range, the machine vision system 6 controls the moving distance of the longitudinal translation mechanism 2 and the lateral translation mechanism 3 and the rotation angle of the rotary mechanism 4, so that the position of the bag opening of the ton bag A rotates and moves within the target range. Then the longitudinal translation mechanism 2 drives the ton bag A to continue moving forward to the bag-opening position for bag-opening operation.

[0012] C. If the recognized bag-opening position coordinates are within the set target range, the longitudinal translation mechanism 2 can directly drive the ton bag A to continue moving forward to the bag-opening position for bag-opening operation.

[0013] D. If the bag-opening positioning color block C cannot be recognized, the position deviation cannot be determined. There may be a situation where the feeding straight tube B of the ton bag A is not placed forward or the folding wrinkles at the bag opening block the bag-opening positioning color block C. At this time, it is determined that the bag-opening condition is not met. The pushing bag cylinder 8 drives the pushing bag plate 7 to drive the ton bag A to move horizontally to the right, pushing the ton bag A out of the pallet 5, and then performing the operations of transferring the next ton bag A and recognizing the bag opening.

[0014] The beneficial effects of the present utility model are as follows:

[0015] A. By using the machine vision system 6 to recognize and position the bag-opening positioning color block C on the lower ton bag A, and controlling the movement of the longitudinal translation mechanism 2 and the lateral translation mechanism 3 and the rotation of the rotary mechanism 4, the position of the bag opening is accurately corrected to meet the bag-opening condition, which can solve the problem that due to the irregular stacking of ton bags A by manual labor, the proportion of ton bags A that do not meet the bag-opening condition and are removed from the production line is high, greatly improving the bag-opening rate of the whole stack of ton bags and the packaging efficiency of the equipment.

[0016] B. The pushing bag cylinder 8 is used to drive the pushing bag plate 7 to move horizontally, removing the ton bag A that does not meet the bag opening conditions from the production line. When there are folding wrinkles at the bag mouth of the ton bag A and the feeding straight cylinder B of the ton bag A is not placed forward, it is impossible to determine the position deviation and thus impossible to carry out deviation correction adjustment. At this time, the ton bag A can be removed from the production line in time, avoiding affecting the normal bag opening of the subsequent ton bag A and improving the reliability of the equipment.

[0017] C. The movable light-shielding cover 65 is lowered to the bottom to fit the bag mouth of the ton bag A, and the bag mouth positioning color block C is recognized, reducing the influence of external factors such as reflection and improving the accuracy of bag mouth recognition and positioning. Description of the Drawings

[0018] Figure 1 is the three-dimensional axonometric view of the deviation correction device of the present utility model.

[0019] Figure 2 is the front view of the deviation correction device of the present utility model.

[0020] Figure 3 is the structural schematic diagram of the frame 1.

[0021] Figure 4 is the structural schematic diagram of the ton bag A.

[0022] Figure 5 is the structural schematic diagram of the machine vision system 6.

[0023] Figure 6 is the schematic diagram of the state when the bag mouth of the ton bag A is transferred to the recognition area.

[0024] Figure 7 is the schematic diagram of the state when the position of the bag mouth of the ton bag A is recognized.

[0025] Figure 8 is the schematic diagram of the state after the bag mouth of the ton bag A is adjusted. Detailed Embodiments

[0026] For the detailed embodiments of the present utility model, please refer to Figures 1 to 8, A ton bag mouth alignment device, which includes a frame 1. Above the front part of the frame 1, a machine vision system 6 is provided. On the frame 1, a longitudinal translation mechanism 2 is provided. On the transfer rack 21 of the longitudinal translation mechanism 2, a transverse translation mechanism 3 is provided. On the transverse movement rack 31 of the transverse translation mechanism 3, a rotary mechanism 4 is provided. On the rotary mechanism 4, a rotating rack 9 is provided. At the upper end of the rotating rack 9, a pallet 5 for supporting the ton bag A is provided. The rotary motor on the rotary mechanism 4 drives the rotating rack 9 and the pallet 5 to rotate in the horizontal plane. The machine vision system 6 identifies and locates the mouth positioning color block C on the lower ton bag A to determine the position deviation of the ton bag A mouth. The machine vision system 6 can control the actions of the longitudinal translation mechanism 2, the transverse translation mechanism 3 and the rotary mechanism 4 to adjust the mouth of the ton bag A with position deviation to the target position to meet the bag opening condition.

[0027] The longitudinal translation mechanism 2 further includes two groups of longitudinally arranged horizontal longitudinal slide rails 22 provided at the upper ends of the left and right sides of the frame 1. There are multiple groups of rollers at the bottom of the transfer rack 21. The lower end of the transfer rack 21 is connected to a synchronous belt, and the transfer rack 21 is driven by a motor to roll on the longitudinal slide rails 22 through the synchronous belt.

[0028] The transverse translation mechanism 3 further includes two groups of horizontally arranged transverse slide rails 32 provided at the upper ends of the front and rear sides of the transfer rack 21. There are multiple groups of rollers at the bottom of the transverse movement rack 31. The transverse movement rack 31 is driven by a motor through a gear and rack mechanism to roll on the transverse slide rails 32.

[0029] Above the left side of the pallet 5, a bag pushing plate 7 is provided. The bag pushing plate 7 is driven by a bag pushing cylinder 8 to move horizontally left and right. The bag pushing cylinder 8 is connected to the lower end of the rotating rack 9. When the feeding straight tube B of the ton bag A may not be placed forward or the folding wrinkles at the bag mouth block the mouth positioning color block C, the position deviation of the bag mouth cannot be determined. At this time, it is determined that the bag opening condition is not met, and the bag pushing cylinder 8 drives the bag pushing plate 7 to drive the ton bag A to move horizontally to the right, and the ton bag A is pushed out of the pallet 5.

[0030] A camera 62 is provided on the machine vision system 6. The camera 62 acquires an image of the bag mouth positioning color patch C that reaches the recognition area. The system identifies and confirms the position coordinates of the bag mouth positioning color patch C, and then calculates the deviation based on the position coordinate data and the set target range. A light shield is provided outside the camera 62, and the camera 62 is fixed at the upper end of the light shield. A supplementary light 63 is further provided inside the light shield. The light shield includes a fixed light shield 61. The upper end inside the fixed light shield 61 is connected to the camera 62. A movable light shield 65 is provided on the lower outer wall of the fixed light shield 61. The movable light shield 65 is driven by a lifting cylinder 64 to perform a lifting action. The cylinder body of the lifting cylinder 64 is hinged on the fixed light shield 61. The movable light shield 65 vertically descends until its bottom end fits against the bulk bag A, achieving a light shielding effect, and the supplementary light 63 achieves a light supplementing effect in the closed space, further improving the accuracy of bag mouth recognition and positioning.

Claims

1. A ton bag mouth deviation correction device, comprising a frame (1), characterized in that: A machine vision system (6) is provided above the front of the frame (1); a longitudinal translation mechanism (2) is provided on the frame (1); a transverse translation mechanism (3) is provided on the transfer frame (21) of the longitudinal translation mechanism (2); a slewing mechanism (4) is provided on the transverse frame (31) of the slewing mechanism (3); a rotating frame (9) is provided on the slewing mechanism (4); a support plate (5) for supporting a ton bag (A) is provided at the upper end of the rotating frame (9); the slewing mechanism (4) drives the rotating frame (9) and the support plate (5) to rotate in a horizontal plane; the machine vision system (6) identifies and locates a bag opening positioning color block (C) on the lower ton bag (A) so as to determine the position deviation of the bag opening of the ton bag (A); the machine vision system (6) can control the actions of the longitudinal translation mechanism (2), the transverse translation mechanism (3) and the slewing mechanism (4) to adjust the bag opening of the ton bag (A) with position deviation to a target position.

2. A ton bag mouth deviation correction device according to claim 1, characterized in that: A bag pushing plate (7) is provided on the upper left side of the support plate (5). The bag pushing plate (7) is driven by a bag pushing cylinder (8) to achieve left-right horizontal movement. The bag pushing cylinder (8) is connected to the lower end of the rotating frame (9).

3. The device for rectifying the mouth of a ton bag according to claim 1 is characterized in that: The machine vision system (6) is provided with a camera (62), the outside of the camera (62) is provided with a light shield, and the camera (62) is fixed to the upper end of the light shield.

4. A ton bag mouth deviation correction device according to claim 3, characterized in that: A fill light (63) is also provided inside the light shield.

5. A ton bag mouth deviation correction device according to claim 3 or 4, characterized in that: The light shield comprises a fixed light shield (61), the upper inner end of the fixed light shield (61) is connected to the camera (62), a movable light shield (65) is arranged on the lower outer wall of the fixed light shield (61), the movable light shield (65) is driven by a lifting cylinder (64) to achieve up and down lifting, and the cylinder body of the lifting cylinder (64) is hinged on the fixed light shield (61).

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