A pushing and folding device for a packaging box

Abstract

The present invention discloses a pushing and edge-folding device for a packaging box, which comprises a main chain conveyor mechanism and two pushing and edge-folding mechanisms; one pushing and edge-folding mechanism is arranged on each side of the main chain conveyor mechanism; an inlet mechanism is further arranged on the side of the main chain conveyor mechanism in front of the pushing and edge-folding mechanism, and the inlet mechanism feeds materials into the packaging box placed on the main chain conveyor mechanism in a positioned manner, and the main chain conveyor mechanism conveys the packaging box after feeding materials to the pushing and edge-folding mechanism; the pushing and edge-folding mechanism comprises a pushing mechanism and a left and right edge-folding mechanism, the pushing mechanism is arranged in front of the left and right edge-folding mechanism and is used for completely pushing the product that has not completely entered the packaging box during feeding into the packaging box; the left and right edge-folding mechanism is used for folding the edges on the left and right sides of the opening of the packaging box. The pushing and edge-folding device of the present invention adopts two groups of symmetrically arranged pushing wheels, and completely pushes the product into the packaging box through the convex teeth of the pushing wheels, which is matched with the linear speed of the main chain conveyor, can operate continuously, and is efficient and stable.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging apparatuses, and particularly relates to a material pushing and edge folding device for a packaging box. Background Art

[0002] Existing canned beverages are usually packaged in packaging boxes, generally cardboard boxes. The cardboard box has a rectangular structure, including four complete cardboard surfaces on the top, bottom, left, and right. The two ends are open and sealed after the edges are folded and adhered. Generally, each opening is provided with four edges. For the convenience of transportation and storage, the cardboard box in the initial state is in a thin sheet shape, and the surface where the edge is located is basically flush with the cardboard surface where the edge is located.

[0003] When a packaging machine packages products such as canned beverages, it first opens the cardboard box through an unpacking device and positions it on the main chain conveyor line. Then, the feeding mechanism feeds materials into the cardboard box. After feeding, edge folding, glue spraying, and glue pressing are carried out. Most common fully enclosed packaging machines mostly group the material products in advance and then use the cylinder to push the material products into the packaging box. This method requires pauses for operation during actual production, cannot be continuously produced, is slow, has low efficiency, and is difficult to achieve a high degree. After most fully enclosed packaging machines complete the entry of the material products into the packaging box, they usually use the method of using a cylinder to strike the edges or an electric motor to control the cantilever to strike the edges to fold the left and right edges on both sides of the packaging box. This method also requires pauses for this operation during actual production, and this method has a complex structure and low efficiency. Summary of the Invention

[0004] 1. Technical problems to be solved:

[0005] In view of the above technical problems, the present invention provides a material pushing and edge folding device for a packaging box.

[0006] 2. Technical solutions:

[0007] A material pushing and edge folding device for a packaging box includes a main chain conveyor mechanism and two material pushing and edge folding mechanisms; one material pushing and edge folding mechanism is arranged on each side of the main chain conveyor mechanism; an inlet feeding mechanism is further arranged on the side of the main chain conveyor mechanism in front of the material pushing and edge folding mechanism. The inlet feeding mechanism feeds materials into the packaging box positioned on the main chain conveyor mechanism, and the main chain conveyor mechanism transports the packaging box after feeding to the material pushing and edge folding mechanism; the material pushing and edge folding mechanism includes a material pushing mechanism and a left and right edge folding mechanism. The material pushing mechanism is arranged in front of the left and right edge folding mechanism and is used to completely push the product that has not fully entered the packaging box during feeding into the packaging box; the left and right edge folding mechanism is used to fold the edges on the left and right sides of the opening of the packaging box.

[0008] Further, the main chain conveyor mechanism includes two symmetrically arranged frames and a packaging box positioning mechanism. The distance between the two frames is adjustable. Each frame is provided with a first conveyor chain and a second conveyor chain. The packaging box positioning mechanism includes a first positioning block and a second positioning block. A plurality of first positioning blocks are equidistantly installed on the two first conveyor chains, and the first positioning blocks on the two first conveyor chains are symmetrically arranged; a plurality of second positioning blocks are equidistantly installed on the second conveyor chain, and the second positioning blocks on the two second conveyor chains are symmetrically arranged; a positioning gap is formed between the first positioning block and the second positioning block on the same side, and the packaging box is placed in the two positioning gaps, and the opening of the packaging box faces the positioning gap.

[0009] Further, the pushing mechanism includes a frame, and a gear-shaped pushing wheel is rotatably connected to the frame. The pushing wheel is arranged on the opening side of the packaging box. The pushing wheel is connected to a first driving mechanism, and the first driving mechanism drives the pushing wheel to rotate at a constant speed. When the main chain conveyor mechanism conveys the packaging box with feeding completed at a constant speed to the pushing mechanism, the convex teeth on the pushing wheel approach the product that has not fully entered the packaging box and push it into the packaging box, and the left and right folding edges pass through the gap between adjacent convex teeth on the pushing wheel.

[0010] Further, the left and right folding edge mechanism includes a folding edge wheel rotatably connected to the frame, and the folding edge wheel is connected to a second driving mechanism; the folding edge wheel includes two symmetric semi-circular convex platforms, and there is a gap between the two convex platforms. The folding edge wheel is arranged on the opening side of the packaging box, and the second driving mechanism drives the folding edge wheel to rotate at a constant speed. When the main chain conveyor mechanism conveys the packaging box with pushing completed at a constant speed to the left and right folding edge mechanism, the front sharp angle of the convex platform moves between the right folding edge of the previous packaging box and the left folding edge of the next packaging box, and the folding edge wheel folds the right folding edge of the previous packaging box and the left folding edge of the next packaging box to both sides at the same time.

[0011] Further, the first driving mechanism includes a first transmission shaft, the first transmission shaft is connected to a first fixing sleeve through a T-shaped quick-release pin, the first fixing sleeve is installed on the pushing wheel, a clamping block is fixed on the first transmission shaft, the first transmission shaft is connected to the frame through a bearing, and the first transmission shaft is driven by a first servo motor installed on the frame.

[0012] Further, the second driving mechanism includes a second transmission shaft, the second transmission shaft is connected to a second fixing sleeve through a spline, the second fixing sleeve is installed on the folding edge wheel, a quick-release wrench is provided on the second fixing sleeve, and the second transmission shaft is driven by a second servo motor installed on the frame.

[0013] Further, an oil-free bushing is fixed on the frame. A fixed shaft is arranged inside the oil-free bushing. The fixed shaft is fixedly connected to a support, the support is fixedly connected to a base, a collision prevention rod is fixed on the base, and a handle is also arranged on the frame. The frame is detachably connected to the fixed rod on the main frame body through a T-shaped quick-release pin or detachably connected to the frame of the main chain conveyor mechanism through a quick-release handle.

[0014] Further, an upper hemming guide plate is arranged at the front end of the left and right hemming mechanism. The upper hemming guide plate is connected to a height adjustment mechanism. In a preferred first embodiment, the height adjustment mechanism includes a connecting plate fixed to the upper hemming guide plate. A long strip-shaped fixing hole is arranged on the connecting plate. The connecting plate is fixed to the frame through a bolt passing through the fixing hole. In a preferred second embodiment, the height adjustment mechanism includes a clamping block and a fixed rod. The upper hemming guide plate is fixed to the fixed rod through the clamping block. A guide hole is arranged on the upper hemming guide plate, and a guide rod is arranged in the guide hole.

[0015] Further, a guide guardrail is arranged behind the left and right hemming mechanism. The guide guardrail includes a plurality of round steel guardrails and brackets. The round steel guardrails are fixed on the brackets. When the packaging box passes through the guide channel between the round steel guardrails on both sides, the round steel guardrails press on the left and right hemming edges after the packaging box is folded.

[0016] 3. Beneficial effects:

[0017] 1. The pushing and hemming device for packaging boxes of the present invention adopts two sets of symmetrically arranged pushing wheels. The convex teeth of the pushing wheels completely push the product into the packaging box, which is matched with the conveying line speed of the main chain conveyor, and can operate continuously, efficiently and stably.

[0018] 2. The pushing and hemming device for packaging boxes of the present invention adopts two sets of symmetrically arranged hemming wheels. The hemming edges are pressed against the packaging box to complete the folding by the contact between the arc surfaces of the hemming wheels and the left and right hemming edges of the end faces of two adjacent packaging boxes. The speed is matched with the conveying line speed of the main chain conveyor, and it can operate continuously, stably, with a simple and practical structure and high efficiency.

[0019] 3. The two sets of pushing wheel assemblies are circumferentially fixed by quick-release pins and locked by clamping blocks, which are convenient for disassembly and assembly and have reliable fixation.

[0020] 4. The two sets of hemming wheel assemblies are guided by spline shafts and locked by quick-release wrenches, which are convenient for disassembly and assembly. The hemming wheels can be adjusted up and down to be suitable for products of various height dimensions.

[0021] 5. Each set of pushing wheel assemblies and hemming wheel assemblies are respectively driven by different servo motors, and the speed and angle of each turntable can be adjusted and configured according to actual production requirements, and the debugging is convenient and fast.

[0022] 6. The frame of the pushing and hemming mechanism can be rotated and opened around the axis, which is convenient for maintenance.

[0023] 7. The material pushing and flanging mechanism is symmetrically installed on both sides of the main chain conveyor line, and can be automatically adjusted in width together with the main chain conveyor line to adapt to various sizes of packaging boxes, with a compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the material pushing and flanging device for packaging boxes of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the main chain conveyor mechanism of the present invention;

[0026] Figure 3 For the present invention Figure 2 An enlarged view of part A in the present invention;

[0027] Figure 4 It is a schematic structural diagram of the material pushing and flanging mechanisms on both sides of the present invention;

[0028] Figure 5 It is a schematic diagram of the material pushing and flanging mechanism on one side of the present invention;

[0029] Figure 6 It is a schematic diagram of the frame connection structure on one side of the present invention;

[0030] Figure 7 It is a schematic diagram of the material pushing mechanism on one side of the present invention;

[0031] Figure 8 It is a schematic diagram of the left and right flanging mechanisms on one side of the present invention;

[0032] Figure 9 It is a schematic diagram of the guiding guardrail structure on one side of the present invention;

[0033] Figure 10 It is a schematic diagram of the material pushing and flanging mechanism on the other side of the present invention;

[0034] Figure 11 It is a schematic diagram of the frame connection structure on the other side of the present invention;

[0035] Figure 12 It is a schematic diagram of the material pushing mechanism on the other side of the present invention;

[0036] Figure 13 It is a schematic diagram of the left and right flanging mechanisms on the other side of the present invention;

[0037] Figure 14 It is a schematic diagram of the guiding guardrail structure on the other side of the present invention;

[0038] Figure 15 It is a state diagram of the material pushing and flanging mechanism of the present invention during operation. DETAILED DESCRIPTION OF THE INVENTION

[0039] The present invention will be specifically described below with reference to the accompanying drawings.

[0040] As shown in the Figure 1 to Figure 15 accompanying drawings,

[0041] A pushing and hemming device for a packaging box includes a main chain conveyor mechanism 1 and two pushing and hemming mechanisms 2; one pushing and hemming mechanism 2 is arranged on each side of the main chain conveyor mechanism 1; an inlet mechanism 3 is further arranged on the side of the main chain conveyor mechanism 1 in front of the pushing and hemming mechanism 2, and the inlet mechanism 3 feeds materials into the packaging box 4 placed on the main chain conveyor mechanism 1 in a positioned manner, and the main chain conveyor mechanism 1 conveys the packaging box 4 after feeding to the pushing and hemming mechanism 2; the pushing and hemming mechanism 2 includes a pushing mechanism 5 and a left and right hemming mechanism 6, the pushing mechanism 5 is arranged in front of the left and right hemming mechanism 6 and is used to completely push the product that has not fully entered the packaging box 4 during feeding into the packaging box 4; the left and right hemming mechanism 6 is used to fold the hems on the left and right sides of the opening of the packaging box 4.

[0042] Specifically, the main chain conveyor mechanism 1 includes two symmetrically arranged frames 1-1 and a packaging box positioning mechanism. The distance between the two frames 1-1 can be adjusted, and this adjustment structure is prior art. A first conveyor chain 1-2 and a second conveyor chain 1-3 are arranged on each frame 1-1. The packaging box positioning mechanism includes a first positioning block 1-4 and a second positioning block 1-5. A plurality of first positioning blocks 1-4 are equidistantly installed on the two first conveyor chains 1-2, and the first positioning blocks 1-4 on the two first conveyor chains 1-2 are symmetrically arranged; a plurality of second positioning blocks 1-5 are equidistantly installed on the second conveyor chain 1-3, and the second positioning blocks 1-5 on the two second conveyor chains 1-3 are symmetrically arranged; a positioning gap is formed between the first positioning block 1-4 and the second positioning block 1-5 on the same side, and the packaging box 4 is placed in the two positioning gaps, and the opening of the packaging box 4 faces the positioning gap. The distance between the first positioning block 1-4 and the second positioning block 1-5 on the same side is adjusted to adapt to the positioning of packaging boxes of different specifications.

[0043] The pushing mechanism 5 includes a frame 7. A gear-shaped pushing wheel 5-1 is rotatably connected to the frame 7. The pushing wheel 5-1 is arranged on the opening side of the packaging box 4. The pushing wheel 5-1 is connected to a first driving mechanism 8, and the first driving mechanism 8 drives the pushing wheel 5-1 to rotate at a constant speed. When the main chain conveyor mechanism 1 conveys the packaging box 4 that has completed feeding at a constant speed to the pushing mechanism 5, the convex teeth 5-11 on the pushing wheel 5-1 approach the product that has not fully entered the packaging box 4 and push it into the packaging box 4, and the left and right hems of the packaging box 4 pass through the gap 5-12 between adjacent convex teeth 5-11 on the pushing wheel 5-1 (as shown in Figure 15 ).

[0044] The left and right hemming mechanism 6 includes a hemming wheel 6-1 rotatably connected to the frame 7, and the hemming wheel 6-1 is connected to the second driving mechanism 9; the hemming wheel 6-1 includes two symmetrical semi-circular bosses 6-11, and there is a notch 6-12 between the two bosses 6-11. The hemming wheel 6-1 is arranged on the opening side of the packaging box 4. The second driving mechanism 9 drives the hemming wheel 6-1 to rotate at a constant speed. When the main chain conveyor mechanism 1 conveys the packaging box 4 that has completed the pushing operation to the left and right hemming mechanism at a constant speed, the front sharp corner of the boss 6-11 moves between the right hem of the previous packaging box 4 and the left hem of the next packaging box 4, and the hemming wheel 6-1 simultaneously folds the right hem of the previous packaging box 4 and the left hem of the next packaging box 4 to both sides (as Figure 15 ).

[0045] The first driving mechanism includes a first transmission shaft 8-1. The first transmission shaft 8-1 is connected to a first fixing sleeve 8-2 through a T-shaped quick-release pin. The first fixing sleeve 8-2 is installed on the pushing wheel 5-1. A clamping block 8-3 is fixed on the first transmission shaft 8-1. The clamping block 8-3 presses the first fixing sleeve 8-2 and the T-shaped quick-release pin to prevent the pushing wheel 5-1 from moving up and down. The first transmission shaft 8-1 is connected to the frame 7 through a bearing, and the first transmission shaft 8-1 is driven by a first servo motor 8-4 installed on the frame 7.

[0046] The second driving mechanism 9 includes a second transmission shaft 9-1. The second transmission shaft 9-1 is connected to a second fixing sleeve 9-3 through a spline 9-2. The second fixing sleeve 9-3 is installed on the hemming wheel 6-1. A quick-release wrench is provided on the second fixing sleeve 9-3. The second transmission shaft 9-1 is driven by a second servo motor 9-4 installed on the frame 7.

[0047] An oil-free bushing 10 is fixed on the frame 7. A fixed shaft 11 is arranged inside the oil-free bushing 10. The fixed shaft 11 is fixedly connected to a support 12, and the support 12 is fixedly connected to a base 13. A bumper bar 14 can also be fixed on the base 13. A handle 15 is also provided on the frame 7. The frame 7 is connected to a fixed rod 16 through a T-shaped quick-release pin or is detachably connected to the frame 1-1 of the main chain conveyor mechanism through a quick-release handle. The frame 7 can be rotated and opened through the fixed shaft 11 for convenient maintenance.

[0048] An upper hemming guide plate 17 is provided at the front end of the left and right hemming mechanism 6. One side of the upper hemming guide plate 17 is fixed to a connecting plate 18. A long strip-shaped fixing hole 19 is provided on the connecting plate 18. The connecting plate 18 is fixed to the frame 7 through bolts passing through the fixing hole 19. The height of the upper hemming guide plate 17 is adjusted by adjusting the position of the bolts in the fixing hole 19. The other side of the upper hemming guide plate 17 is fixed to a fixed rod 21 through a clamp 20. A guide hole is provided on the upper hemming guide plate 17, and a guide rod 22 is arranged inside the guide hole. The height of the upper hemming guide plate 17 is adjusted by the clamping position of the clamp 20 on the fixed rod 21.

[0049] A guiding guardrail 23 is provided behind the left and right hemming mechanism 6. The guiding guardrail 23 includes a plurality of round steel guardrails 23-1 and brackets 23-2. The round steel guardrails 23-1 are fixed on the brackets 23-2. When the packaging box 4 passes through the guiding channel between the round steel guardrails 23-1 on both sides, the round steel guardrails 23-1 press on the left and right hems after the packaging box 4 is folded. The round steel guardrails 23-1 are used to maintain the state where the left and right hems of the opening side of the packaging box are folded and convey it to the next process. The pusher and hemming device for the packaging box of the present invention conveys the products fed from the side, such as canned beverages, to the pusher and hemming mechanism 2 through the main chain conveyor mechanism 1. By controlling the conveying speed of the main chain conveyor mechanism 1 and the rotation speeds of the pusher wheel 5-1 and the hemming wheel 6-1, the pusher wheel 5-1 pushes the products that have not fully entered the packaging box 4 during the side feeding into the packaging box 4 to prepare for the next sealing of the packaging box 4. When the packaging box 4 is sealed, the left and right hems are first folded by the hemming wheel 6-1. When the hemming wheel 6-1 moves, it can fold the two side hems (i.e., the left hem or the right hem) of two adjacent packaging boxes during the positioning and conveying process at the same time. After the left and right hems are folded, they are guided into the next process through the guiding guardrail 23.

[0050] Although the present invention has been disclosed above with preferred embodiments, they are not used to limit the present invention. Any person skilled in this art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the protection scope of the claims of this application.

Claims

1. A pushing and folding edge device for a packaging box, characterized in that, It includes a main chain conveyor mechanism and two material pushing and edge folding mechanisms; one material pushing and edge folding mechanism is arranged on each side of the main chain conveyor mechanism; an inlet mechanism is further arranged on the side of the main chain conveyor mechanism in front of the material pushing and edge folding mechanism, and the inlet mechanism feeds materials into the packaging box placed in position on the main chain conveyor mechanism, and the main chain conveyor mechanism conveys the packaging box after feeding to the material pushing and edge folding mechanism; the material pushing and edge folding mechanism includes a material pushing mechanism and a left and right edge folding mechanism, the material pushing mechanism is arranged in front of the left and right edge folding mechanism and is used to completely push the product that has not fully entered the packaging box during feeding into the packaging box; the left and right edge folding mechanism is used to fold the edges on the left and right sides of the opening of the packaging box. The main chain conveyor mechanism includes two symmetrically arranged frames and a packaging box positioning mechanism. The distance between the two frames can be adjusted. A first conveyor chain and a second conveyor chain are arranged on each frame. The packaging box positioning mechanism includes a first positioning block and a second positioning block. A plurality of first positioning blocks are installed on the two first conveyor chains at equal intervals, and the first positioning blocks on the two first conveyor chains are symmetrically arranged; a plurality of second positioning blocks are installed on the second conveyor chain at equal intervals, and the second positioning blocks on the two second conveyor chains are symmetrically arranged; a positioning gap is formed between the first positioning block and the second positioning block on the same side, and the packaging box is placed in the two positioning gaps, and the opening of the packaging box faces the positioning gap. The material pushing mechanism includes a frame, and a gear-shaped material pushing wheel is rotatably connected to the frame. The material pushing wheel is arranged on the opening side of the packaging box. The material pushing wheel is connected to a first driving mechanism, and the first driving mechanism drives the material pushing wheel to rotate at a constant speed. When the main chain conveyor mechanism conveys the packaging box with feeding completed to the material pushing mechanism at a constant speed, the convex teeth on the material pushing wheel approach the product that has not fully entered the packaging box and push it into the packaging box, and the left and right edges pass through the gap between adjacent convex teeth on the material pushing wheel. The left and right edge folding mechanism includes a folding wheel rotatably connected to the frame, and the folding wheel is connected to a second driving mechanism; the folding wheel includes two symmetric semi-circular convex platforms, and there is a gap between the two convex platforms. The folding wheel is arranged on the opening side of the packaging box. The second driving mechanism drives the folding wheel to rotate at a constant speed. When the main chain conveyor mechanism conveys the packaging box after material pushing to the left and right edge folding mechanism at a constant speed, the front sharp angle of the convex platform moves between the right edge of the previous packaging box and the left edge of the next packaging box, and the folding wheel folds the right edge of the previous packaging box and the left edge of the next packaging box to both sides at the same time. The first driving mechanism includes a first transmission shaft. The first transmission shaft is connected to a first fixing sleeve through a T-shaped quick-release pin. The first fixing sleeve is installed on the material pushing wheel. A clamping block is fixed on the first transmission shaft. The first transmission shaft is connected to the frame through a bearing, and the first transmission shaft is driven by a first servo motor installed on the frame. The second driving mechanism includes a second transmission shaft. The second transmission shaft is connected to a second fixing sleeve through a spline. The second fixing sleeve is installed on the folding wheel. A quick-release wrench is arranged on the second fixing sleeve. The second transmission shaft is driven by a second servo motor installed on the frame.

2. The pushing and hemming device for a packaging box according to claim 1, wherein, An oil-free bushing is fixed on the frame. A fixed shaft is arranged inside the oil-free bushing. The fixed shaft is fixedly connected to a support, the support is fixedly connected to a base, a collision avoidance bar is fixed on the base, a handle is also arranged on the frame, and the frame is detachably connected to a fixed rod on the main frame body through a T-shaped quick-release pin or detachably connected to the frame of the main chain conveyor mechanism through a quick-release handle.

3. The pushing and hemming device for a packaging box according to claim 2, wherein, A upper hemming guide plate is arranged at the front end of the left and right hemming mechanism. The upper hemming guide plate is connected to a height adjustment mechanism, and the height adjustment mechanism is any one of the following two structures: 1) The height adjustment mechanism includes a connecting plate fixed to the upper hemming guide plate. A long strip-shaped fixing hole is arranged on the connecting plate, and the connecting plate is fixed on the frame through a bolt passing through the fixing hole; 2) The height adjustment mechanism includes a clamp block and a fixed rod. The upper hemming guide plate is fixed on the fixed rod through the clamp block. A guide hole is arranged on the upper hemming guide plate, and a guide rod is arranged in the guide hole.

4. A pushing and folding device for a packaging box according to claim 3, characterized in that, A guide guardrail is arranged behind the left and right hemming mechanism. The guide guardrail includes a plurality of round steel guardrails and brackets. The round steel guardrails are fixed on the brackets. When the packaging box passes through the guide channel between the round steel guardrails on both sides, the round steel guardrails press on the left and right hemming edges after the packaging box is folded.

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