Bag sealing device for automatic packaging machine

Abstract

The utility model relates to the field of packaging equipment, in particular to a bag sealing device for an automatic packaging machine, which comprises a conveying belt, and a fixed frame and a lifting frame are sequentially arranged on the conveying belt in a crossing manner along the conveying direction of the conveying belt; an inward folding mechanism is arranged on the fixed frame and used for inward folding the top opening of the packaging bag and the front side face and the rear side face in the conveying direction. A closing-up baffle is arranged on the lifting frame and used for closing up a top opening of the packaging bag after being folded inwards, and a bending mechanism is arranged on the rear side of the closing-up baffle and used for bending the top opening of the packaging bag from a first side face close to one side of the bending mechanism to a second side face away from one side of the bending mechanism. A labeling mechanism is arranged on the side, opposite to the bending mechanism, of the lifting frame and used for labeling between the first side face and the second side face of the top opening of the bent packaging bag. Compared with the prior art, the automatic sealing and labeling device has the advantages that a traditional manual sealing and labeling mode is replaced, production efficiency is improved, and production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a bag sealing device for an automatic packaging machine. Background Art

[0002] At present, the steps of paper bag sealing and labeling are mostly carried out manually. With the gradual improvement of enterprises' pursuit of production efficiency and product quality, the traditional manual method can no longer meet the needs of modern enterprises. Therefore, automated sealing and labeling equipment has emerged. The automated equipment can not only improve production efficiency, reduce production costs, but also improve product quality and reduce workers' operation errors. In the actual production process, due to the large volume differences of the items to be packaged, the required paper bag sizes are not the same, and the existing single equipment cannot flexibly meet the sealing and labeling requirements of multi-specification packaging bags. Summary of the Utility Model

[0003] In view of the above problems, the embodiment of the utility model provides a bag sealing device for an automatic packaging machine.

[0004] A bag sealing device for an automatic packaging machine provided by the embodiment of the utility model includes a conveying belt, and a fixed frame and a lifting frame are sequentially straddled on the conveying belt along the conveying direction of the conveying belt; an inner folding mechanism is arranged on the fixed frame and is used for folding inwards the two side surfaces of the top opening of the packaging bag located before and after in the conveying direction; a closing baffle is arranged on the lifting frame and is used for closing the top opening of the folded packaging bag, and a folding mechanism is arranged at the rear side of the closing baffle and is used for folding the top opening of the packaging bag from a first side surface close to the folding mechanism to a second side surface far from the folding mechanism, and a labeling mechanism is arranged on the lifting frame on the side opposite to the folding mechanism and is used for labeling between the first side surface and the second side surface at the top opening of the folded packaging bag.

[0005] Compared with the prior art, the beneficial effect of the utility model lies in: replacing the traditional manual sealing and labeling method, improving production efficiency and reducing production costs.

[0006] Optionally, the inner folding mechanism includes a height adjustment cylinder arranged on the fixed frame and perpendicular to the conveying belt, a double-headed inner folding cylinder is horizontally arranged on the push rod of the height adjustment cylinder, the axis of the double-headed inner folding cylinder is arranged along the conveying direction, and inner folding rods are vertically arranged on the two push rods of the double-headed inner folding cylinder.

[0007] Optionally, the lifting frame includes fixed columns located on both sides of the conveyor belt and arranged oppositely, sliding columns slidably arranged with the fixed columns, and a column driving mechanism for driving the sliding columns to lift. The column driving mechanism includes a rotating shaft arranged on one side between the opposite fixed columns, a rotating driving unit for driving the rotating shaft to rotate, fork-shaped members arranged oppositely at both ends of the rotating shaft, elongated holes are formed in the fork-shaped members, and fixing pins are arranged at the bottom of the sliding columns and inserted into the elongated holes.

[0008] Optionally, the closing baffle includes a long closing baffle and a short closing baffle arranged oppositely along the conveying direction; the short closing baffle is located on the side close to the bending mechanism, and the long closing baffle is located on the side far from the bending mechanism; the rear end of the short closing baffle is located in front of the bending mechanism, the rear part of the long closing baffle is opposite to the bending mechanism, and the distance between the front ends of the long closing baffle and the short closing baffle is greater than the distance between the rear ends.

[0009] Optionally, the bending mechanism includes a slide table cylinder arranged opposite to the long closing baffle, a pressing plate parallel to the long closing baffle is arranged on the push rod of the slide table cylinder, bending plates are connected to both sides of the upper side of the pressing plate and located on both sides of the push rod of the slide table cylinder through pin shafts, a slideway is arranged on the surface of the bending plate and a bending slider is arranged in the slideway, a bending cylinder is vertically arranged above the bending plate on the lifting frame, the bending cylinder is slidably arranged with the lifting frame along the stroke direction of the push rod of the slide table cylinder, and the push rod of the bending cylinder is in transmission connection with the bending slider.

[0010] Optionally, the labeling mechanism includes a lifting driving unit, a label box is arranged on the lifting frame on the moving stroke of the moving end of the lifting driving unit, a labeling cylinder is horizontally arranged on the moving end of the lifting driving unit, a suction cup bottom plate is installed on the push rod of the labeling cylinder, suction cups are installed on the suction cup bottom plate, the lifting driving unit drives the labeling cylinder to move, when the suction cups are opposite to the labels in the label box, the labels are sucked by the suction cups, the lifting driving unit continues to drive the labeling cylinder to move, when the labels are opposite to the top opening of the bent packaging bag, the push rod of the labeling cylinder extends to paste the labels between the first side and the second side.

[0011] Optionally, a spring sleeve is arranged on the upper side of the suction cups on the suction cup bottom plate, and an intermediate pressing plate is arranged on the spring sleeve. Description of the Drawings

[0012] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and do not limit the present invention. In the drawings:

[0013] Figure 1 is a schematic three-dimensional structure of the bag sealing device for an automatic packaging machine provided by an embodiment of the present invention Figure 1 ;

[0014] Figure 2Schematic three - dimensional structure of the bag - sealing device for an automatic packaging machine provided by an embodiment of the present utility model Figure 2 ;

[0015] Figure 3 Schematic side - view structure of the bag - sealing device for an automatic packaging machine provided by an embodiment of the present utility model;

[0016] Figure 4 Schematic structure of the inner - folding mechanism provided by an embodiment of the present utility model;

[0017] Figure 5 Schematic partial - structure of the lifting frame provided by an embodiment of the present utility model;

[0018] Figure 6 Schematic three - dimensional structure of the bending mechanism provided by an embodiment of the present utility model;

[0019] Figure 7 Schematic side - view structure of the bending mechanism provided by an embodiment of the present utility model;

[0020] Figure 8 Schematic partial - structure of the labeling mechanism provided by an embodiment of the present utility model;

[0021] Figure 9 Schematic partial - structure of the label box provided by an embodiment of the present utility model.

[0022] Wherein, 1, conveyor belt; 2, fixed frame; 3, lifting frame; 4, inner - folding mechanism; 5, packaging bag; 6, closing baffle; 7, bending mechanism; 8, labeling mechanism; 9, height - adjusting cylinder; 10, double - headed inner - folding cylinder; 11, inner - folding rod; 12, fixed column; 13, sliding column; 14, column driving mechanism; 15, rotating shaft; 16, fork; 17, long closing baffle; 18, short closing baffle; 19, sliding - table cylinder; 20, pressing plate; 21, bending plate; 22, slideway; 23, bending slider; 24, bending cylinder; 25, lifting driving unit; 26, label box; 27, labeling cylinder; 28, sucker bottom plate; 29, sucker; 30, label; 31, spring sleeve; 32, intermediate pressing plate; 33, label reel; 34, label paper disk. Detailed implementation manners

[0023] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in combination with the implementation manners and the drawings. Herein, the illustrative implementation manners and their descriptions of the present utility model are used to explain the present utility model, but not to limit the present utility model.

[0024] See Figures 1-9, the bag sealing device for an automatic packaging machine provided by an embodiment of the present utility model includes a conveying belt 1, and a fixed frame 2 and a lifting frame 3 are sequentially spanned on the conveying belt 1 along the conveying direction of the conveying belt 1; an inner folding mechanism 4 is arranged on the fixed frame 2 for inner folding the two side surfaces of the top opening of the packaging bag 5 that are in the front and rear in the conveying direction; a closing baffle 6 is arranged on the lifting frame 3 for closing the top opening of the inner-folded packaging bag 5, and a bending mechanism 7 is arranged at the rear side of the closing baffle 6, and the bending mechanism 7 is used for folding the top opening of the packaging bag 5 from the first side surface close to the bending mechanism 7 to the second side surface far from the bending mechanism 7, and a labeling mechanism 8 is arranged on the lifting frame 3 on the side opposite to the bending mechanism 7, and the labeling mechanism 8 is used for labeling between the first side surface and the second side surface at the top opening of the bent packaging bag 5.

[0025] In implementation, the fixed frame 2 and the lifting frame 3 can be made of aluminum profiles.

[0026] In implementation, the inner folding mechanism 4 includes a height adjustment cylinder 9 arranged on the fixed frame 2 and perpendicular to the conveying belt 1. A double-headed inner folding cylinder 10 is horizontally arranged on the push rod of the height adjustment cylinder 9. The axis of the double-headed inner folding cylinder 10 is arranged along the conveying direction, and inner folding rods 11 are vertically arranged on the two push rods of the double-headed inner folding cylinder 10; the double-headed inner folding cylinder 10 is a double-headed cylinder, and the two push rods in the double-headed cylinder can extend or retract synchronously to drive the two inner folding rods 11 to approach or move away from each other; during the working process, the height adjustment cylinder 9 drives the double-headed inner folding cylinder 10 to descend until the two inner folding rods 11 are respectively located outside the two side surfaces of the top opening of the packaging bag 5 that are in the front and rear in the conveying direction, and then the double-headed inner folding cylinder 10 acts to make the two inner folding rods 11 approach and close together, so as to contract the two side surfaces of the packaging bag 5 inward and prevent the side surfaces of the packaging bag 5 from turning outwards when closing through the closing baffle 6 subsequently.

[0027] In implementation, the lifting frame 3 includes fixed columns 12 arranged oppositely on both sides of the conveying belt 1, sliding columns 13 slidably arranged with the fixed columns 12, and a column driving mechanism 14 for driving the sliding columns 13 to lift. The column driving mechanism 14 includes a rotating shaft 15 arranged on one side between the opposite fixed columns 12, a rotating driving unit for driving the rotation of the rotating shaft 15, and fork-shaped members 16 arranged oppositely at both ends of the rotating shaft 15. Long holes are formed in the fork-shaped members 16, and fixing pins are arranged at the bottom of the sliding columns 13 and penetrate through the long holes; the rotating driving unit can be realized by a worm and gear structure. The worm needs to be fixedly sleeved on the rotating shaft 15, and the worm rotates through a driving motor and then transmits the power to the rotating shaft 15 through the worm wheel, finally realizing the swing of the fork-shaped members 16. During the swing of the fork-shaped members 16, the sliding columns 13 are driven to complete the lifting through the fixing pins.

[0028] During implementation, the closing baffle 6 includes a long closing baffle 17 and a short closing baffle 18 which are arranged opposite to each other along the conveying direction; the short closing baffle 18 is located on the side close to the bending mechanism 7, and the long closing baffle 17 is located on the side away from the bending mechanism 7; the long closing baffle 17 and the short closing baffle 18 are generally flush as a whole, the rear end of the short closing baffle 18 is located on the front side of the bending mechanism 7, the rear part of the long closing baffle 17 is opposite to the bending mechanism 7, and the distance between the front ends of the long closing baffle 17 and the short closing baffle 18 is greater than the distance between the rear ends; during the conveying process of the packaging bag 5, the bag mouth is shrunk under the clamping action between the long closing baffle 17 and the short closing baffle 18.

[0029] In the implementation, the bending mechanism 7 includes a slide cylinder 19 arranged opposite to the long closing baffle 17, a pressing plate 20 parallel to the long closing baffle 17 is arranged on the push rod of the slide cylinder 19, a bending plate 21 is connected to the upper side of the pressing plate 20 and located on both sides of the push rod of the slide cylinder 19 through a pin shaft, a slideway 22 is arranged on the surface of the bending plate 21 and a bending slider 23 is arranged in the slideway 22, a bending cylinder 24 is vertically arranged above the bending plate 21 on the lifting frame 3, and the bending cylinder 24 and the lifting frame 3 are arranged along the movement of the push rod of the slide cylinder 19. The push rod of the bending cylinder 24 is connected to the bending slider 23 in a transmission manner. Corresponding to the two bending plates 21, the push rod of the bending cylinder 24 and the bending slider 23 can be transmitted through a door-type connecting rod, and the door-type connecting rod is hinged to the bending slider 23. During operation, the push rod of the slide cylinder 19 is extended to realize the clamping of the pressure plate 20 and the long closing baffle 17 on the bag mouth of the packaging bag 5. Thereafter, the push rod of the bending cylinder 24 is extended to drive the bending plate 21 to flip downward, thereby bending the portion of the packaging bag 5 on the upper side of the long closing baffle 17 downward to complete the sealing.

[0030] In practice, the labeling mechanism 8 includes a lifting drive unit 25, a label box 26 is arranged on the moving stroke of the moving end of the lifting drive unit 24 on the lifting frame 3, a labeling cylinder 27 is arranged horizontally on the moving end of the lifting drive unit 25, a suction cup bottom plate 28 is installed on the push rod of the labeling cylinder 27, a suction cup 29 is installed on the suction cup bottom plate 28, the lifting drive unit 25 drives the labeling cylinder 27 to move, when the suction cup 29 is opposite to the label 30 in the label box 26, the label 30 is sucked by the suction cup 29, the lifting drive unit 25 continues to drive the labeling cylinder 27 to move, when the label 30 is opposite to the top of the bent packaging bag 5, the push rod of the labeling cylinder 27 extends to stick the label 30 between the first side and the second side. The lifting drive unit 25 can be implemented by a gear rack structure, the labeling cylinder 27 is installed at the bottom of the rack, the gear is driven to rotate by the motor and then drives the labeling cylinder 27 to rise and fall through the rack.

[0031] During implementation, a spring sleeve 31 is provided on the upper side of the suction cup 29 on the suction cup bottom plate 28. An intermediate pressing plate 32 is provided on the spring sleeve 31. The intermediate pressing plate 32 is used to press the top opening part of the packaging bag 5 tightly during labeling, so that a crease is formed at the top opening part, preventing the label 30 from bouncing off due to the tension at the top opening part after labeling is completed.

[0032] During implementation, the label box 26 includes a label roll disk 33 and a label paper disk 34. The label roll disk 33 and the label paper disk 34 are driven by a driving motor to rotate synchronously. When in use, the label roll is placed in the label roll disk 33 and is led out by the guiding plate in the label roll disk 33 and introduced into the label paper disk 34 through the guiding plate of the label paper disk 34. In this way, when labeling, the driving motor drives the label roll disk 33 and the label paper disk 34 to rotate synchronously. The labeling mechanism 8 sucks the label 30 on the label roll led out from the label roll disk 33, and the remaining label paper is recycled into the label paper disk 34.

[0033] When performing sealing and labeling on the packaging bag 5, the packaging bag 5 is placed on the conveyor belt 1, and the conveyor belt 1 transports the packaging bag 5 to the lower part of the inner folding mechanism 4. The height adjustment cylinder 9 acts to drive the double-headed inner folding cylinder 10 downward, so that the inner folding rods 11 are located outside the front and rear two sides of the packaging bag 5. The double-headed inner folding cylinder 10 acts to contract the two sides of the packaging bag 5 inward to a certain extent through the two inner folding rods 11. Thereafter, the conveyor belt 1 continues to transport the packaging bag 5 backward. The packaging bag 5 enters between the long closing baffle 17 and the short closing baffle 18 and completes the bag mouth contraction under the action of the two. The packaging bag 5 after bag mouth contraction is transported to the working station of the bending mechanism 7. The sliding table cylinder 19 acts to clamp the bag mouth part of the packaging bag 5 between the pressing plate 20 and the long closing baffle 17. Thereafter, the push rod of the bending cylinder 24 extends to drive the bending plate 21 to turn downward, thereby bending downward the part of the packaging bag 5 above the long closing baffle 17 to complete the sealing. The lifting unit 25 in the labeling mechanism 8 drives the labeling cylinder 27 to move downward, and during the downward movement, the label 30 in the label box 26 is sucked through the suction cup 29. When the lifting unit 25 drives the labeling cylinder 27 to descend to be opposite to the joint between the first side and the second side of the bent packaging bag 5, the labeling cylinder 27 acts to paste the label 30 between the first side and the second side.

[0034] The above are only the preferred embodiments of the present invention, and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.

Claims

1. A bag sealing device for an automatic packaging machine, characterized in that, It includes a conveyor belt, on which a fixed frame and a lifting frame are successively straddled along the conveying direction of the conveyor belt; an inner folding mechanism is arranged on the fixed frame, which is used to fold inwards the two side surfaces of the top opening of the packaging bag located before and after in the conveying direction; a closing baffle is arranged on the lifting frame, which is used to close the top opening of the folded packaging bag, and a bending mechanism is arranged at the rear side of the closing baffle, which is used to fold the top opening of the packaging bag from the first side surface close to the bending mechanism to the second side surface far from the bending mechanism, and a labeling mechanism is arranged on the lifting frame on the side opposite to the bending mechanism, which is used to label between the first side surface and the second side surface at the top opening of the bent packaging bag.

2. The bag sealing device for an automatic packaging machine according to claim 1, characterized in that, The inner folding mechanism includes a height adjustment cylinder arranged on the fixed frame and perpendicular to the conveyor belt, a double-headed inner folding cylinder is horizontally arranged on the push rod of the height adjustment cylinder, the axis of the double-headed inner folding cylinder is arranged along the conveying direction, and inner folding rods are vertically arranged on the two push rods of the double-headed inner folding cylinder.

3. The bag sealing device for an automatic packaging machine according to claim 1, characterized in that, The lifting frame includes fixed columns arranged oppositely on both sides of the conveyor belt, sliding columns slidably arranged with the fixed columns, and a column driving mechanism for driving the sliding columns to lift. The column driving mechanism includes a rotating shaft arranged on one side between the opposite fixed columns, a rotating driving unit for driving the rotating shaft to rotate, the two ends of the rotating shaft are connected with oppositely arranged fork-shaped levers, long holes are opened on the fork-shaped levers, and fixed pins passing through the long holes are arranged at the bottom of the sliding columns.

4. The bag sealing device for an automatic packaging machine according to claim 1, characterized in that, The closing baffle includes a long closing baffle and a short closing baffle arranged oppositely along the conveying direction; the short closing baffle is located on the side close to the bending mechanism, and the long closing baffle is located on the side far from the bending mechanism; the rear end of the short closing baffle is located in front of the bending mechanism, the rear part of the long closing baffle is opposite to the bending mechanism, and the distance between the front ends of the long closing baffle and the short closing baffle is greater than the distance between the rear ends.

5. The bag sealing device for an automatic packaging machine according to claim 4, wherein, The bending mechanism includes a slide table cylinder arranged opposite to the long closing baffle, a pressing plate parallel to the long closing baffle is arranged on the push rod of the slide table cylinder, bending plates are connected to the upper side edges of the pressing plate on both sides of the push rod of the slide table cylinder through pin shafts, a slideway is arranged on the surface of the bending plate and a bending slider is arranged in the slideway, a bending cylinder is vertically arranged above the bending plate on the lifting frame, the bending cylinder is slidably arranged with the lifting frame along the stroke direction of the push rod of the slide table cylinder, and the push rod of the bending cylinder is in transmission connection with the bending slider.

6. The bag sealing device for an automatic packaging machine according to claim 1, characterized in that, The labeling mechanism includes a lifting driving unit, a label box is arranged on the lifting frame along the moving stroke of the moving end of the lifting driving unit, a labeling cylinder is horizontally arranged on the moving end in the lifting driving unit, a suction cup bottom plate is installed on the push rod of the labeling cylinder, and suction cups are installed on the suction cup bottom plate. The lifting driving unit drives the labeling cylinder to move. When the suction cups are opposite to the labels in the label box, the labels are sucked through the suction cups. The lifting driving unit continues to drive the labeling cylinder to move. When the labels are opposite to the top opening of the bent packaging bag, the push rod of the labeling cylinder extends to paste the labels between the first side surface and the second side surface.

7. The bag sealing device for an automatic packaging machine according to claim 1, characterized in that, A spring sleeve is arranged on the suction cup bottom plate above the suction cups, and an intermediate pressing plate is arranged on the spring sleeve.

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