An automatic production line for paper packaging products

Abstract

The application discloses a kind of paper packaging product automated production line, specifically relates to carton production technical field, including bundling machine, bundling machine includes bundling component and bundling conveying component, two groups of auxiliary pressing components are further provided on bundling machine, auxiliary pressing component includes extrusion frame and extrusion driver, both ends of extrusion frame are provided with right-angle clamping seat, right-angle clamping seat is set to the edge of flat carton bag, right-angle clamping seat is provided with the corner heating cavity corresponding to the corner of bundling tape edge, the inner cavity of corner heating cavity is heated by heating component.The inner cavity of corner heating cavity is heated, so that the position of the corner of bundling tape edge is heated, after the corner of bundling tape edge is heated and soft, plastic deformation can be generated, thereby reducing the curvature area of the corner of bundling tape edge, so that it forms right-angle structure as far as possible, thereby guaranteeing tightly bundling flat carton, while also reducing subsequent damage to flat carton.

Description

Technical Field

[0001] This invention relates to the field of cardboard box production technology, and more specifically, to an automated production line for paper packaging products. Background Technology

[0002] Packaging cartons are widely used packaging containers in the transportation, storage, and sale of goods, typically made of corrugated cardboard. They not only protect products from physical damage but also provide cushioning, preventing impact or compression during handling and transportation. The main component of packaging cartons is corrugated cardboard; the most common type is the folding carton, made by folding one or more sheets of corrugated cardboard and securing them with nails or glue. This design facilitates mass production and storage, and is easy to assemble and disassemble.

[0003] A cardboard box production line is a series of specialized machines used to manufacture cardboard boxes. These machines are typically arranged in a specific sequence to ensure efficient and continuous production. A cardboard box production line mainly consists of corrugated cardboard production equipment, printing equipment, die-cutting machines, stapling / gluing machines, folding machines, and strapping machines. The cardboard produced by the corrugated cardboard production equipment is printed with corresponding patterns and information by the printing equipment. Then, the die-cutting machine cuts the cardboard according to a pre-set template to form the various parts of the cardboard box. At this point, the cardboard is still in a flat board state and has not yet formed a closed circle. Therefore, the stapling / gluing machine is needed to fold and staple / glu the two ends of the cardboard to form a closed circle. After folding and pressing, a double-layered flat structure is formed. For ease of transportation, the cardboard box does not need to be folded and sealed to form a box shape at this stage. Instead, it is stacked in a folded, flat structure and then strapped together by a strapping machine for packaging, ready for sale. When in use, the cardboard box is then folded back into its original box shape.

[0004] The strapping machine used to fold the cardboard boxes into a flat state, also known as a packing machine or strapping machine, is a device that bundles cardboard, cartons, and other products together for easy handling and storage. It secures the goods using strapping (such as plastic straps, PP straps, etc.) to ensure they do not come apart during transport.

[0005] During actual strapping, the strapping machine first pulls out a certain length of strapping tape from the tape storage device. The flat cardboard box is placed in the working area of ​​the strapping machine, and the strapping machine wraps the strapping tape around the flat cardboard box, ensuring that the tape is in the correct position. After the strapping tape is wrapped, the tightening mechanism is activated, which tightens the tape mechanically or pneumatically. After tightening, the strapping machine performs heat fusion sealing on both ends of the tape, that is, the two ends of the tape are melted and glued together by heating elements, thereby realizing the strapping of multiple flat cardboard boxes.

[0006] Corrugated cardboard consists of a face paper, a corrugated core paper, and a liner paper. Corrugated cardboard can be classified into single-wall, double-wall, and triple-wall types. For some packaging boxes, to improve cushioning and protection, even more layers of corrugated structure are constructed. These types of packaging boxes have a large cushioning space. During bundling, to ensure tightness, compression equipment is used to press the multiple layers of flat cardboard. After bundling, the strapping itself has a certain strength, forming a curved structure at the corners. During subsequent transportation, the bundled flat cardboard will expand due to the loss of compression, resulting in reverse compression at the corners of the strapping. Furthermore, the sharp edges of the strapping can easily damage the cardboard structure at the corners, affecting product quality. Summary of the Invention

[0007] The present invention provides an automated production line for paper packaging products. The problem to be solved is that when existing multi-layer corrugated structures are tightly bundled, the strapping itself has a certain strength and will form a certain arc structure at the corners of the bundle. However, during subsequent transportation, the bundled flat carton will stretch out due to the loss of compression, and then form reverse compression with the strapping at the corners of the strapping, which affects the product quality.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an automated production line for paper packaging products, including a strapping machine, the strapping machine including a strapping assembly and a strapping conveying assembly, and the strapping machine is also provided with two sets of auxiliary pressing assemblies, which are symmetrically arranged on the strapping conveying assembly. Two sets of auxiliary pressing components are set at the subsequent station of the strapping component. The auxiliary pressing component includes a pressing frame and a pressing driver. The pressing driver is used to drive the auxiliary pressing component to move closer to the flat carton. Both ends of the pressing frame are provided with right-angle brackets, which are set to correspond to the edges of the flat carton. The pressing frame and the right-angle brackets are provided with strapping slots for accommodating strapping. The right-angle brackets are provided with corner heating chambers corresponding to the corners of the strapping. The inner cavity of the corner heating chamber is heated by a heating component.

[0009] In a preferred embodiment, the production line further includes an auxiliary pressing component, a folding machine, a gluing machine, a die-cutting machine, printing equipment, and corrugated cardboard production equipment. The processing sequence of the production line is as follows: corrugated cardboard production equipment, printing equipment, die-cutting machine, gluing machine, folding machine, auxiliary pressing component, and strapping machine.

[0010] In a preferred embodiment, the heating assembly includes a heating chamber and an air pump. An electric heater is fixedly installed in the heating chamber, and the air pump is connected to the corner heating chamber and the electric heater through an air supply pipe.

[0011] In a preferred embodiment, the extrusion drive includes a lifting drive, a transverse drive, and a longitudinal drive. The longitudinal drive is fixedly mounted on the strapping conveyor assembly, the transverse drive is mounted on the output end of the longitudinal drive, the lifting drive is mounted on the output end of the transverse drive, and the extrusion frame is mounted on the output end of the lifting drive. The lifting drive is used to drive the extrusion frame to move up and down, the transverse drive is used to drive the extrusion frame to move laterally, and the longitudinal drive is used to drive the extrusion frame to move longitudinally.

[0012] In a preferred embodiment, both the transverse drive and the longitudinal drive are linear motors, and the lifting drive is a hydraulic cylinder.

[0013] In a preferred embodiment, the number of compression frames in each auxiliary compression assembly corresponds to the number of strapping straps on the flat cardboard box, and the number of compression drivers corresponds to the number of compression frames.

[0014] In a preferred embodiment, the right-angle bracket is slidably mounted on the extrusion frame along the length of the extrusion frame, and the extrusion frame is provided with a motion driver for driving the right-angle bracket to move.

[0015] In a preferred embodiment, the right-angle card holder is provided with strapping tape reverse push components on both sides of the corner of the gluing machine. The strapping tape reverse push components are used to drive the material near the corner area of ​​the strapping tape to move closer to the corner.

[0016] In a preferred embodiment, the strapping push assembly is a push wheel, which is rotatably mounted in a right-angle bracket. The right-angle bracket is a rubber wheel. When the right-angle bracket engages with a flat cardboard box, the push wheel is in contact with the surface of the strapping and forms frictional resistance. The push wheel is driven to rotate by a motor.

[0017] In a preferred embodiment, the strapping push assembly is a push plate, which is slidably installed inside a right-angle bracket. A cylinder is fixedly installed in the right-angle bracket, and the push plate is fixedly installed at the output end of the cylinder. When the right-angle bracket engages with a flat cardboard box, the push plate is in contact with the surface of the strapping and forms frictional resistance. A rubber pad structure is provided at the position of the push plate corresponding to the strapping. When the push plate and the strapping cooperate, the rubber pad forms elastic pressure on the strapping.

[0018] The beneficial effects of this invention are as follows: By heating the inner cavity of the corner heating chamber, the corners of the strapping are heated. After the corners of the strapping soften due to heating, plastic deformation can occur, thereby reducing the curvature of the corners and making them form a right-angle structure as much as possible. Furthermore, based on the stretching force of the flat cardboard box wrapping the flat cardboard box, the strapping can more evenly bind the flat cardboard box, thus ensuring a tight binding of the flat cardboard box while reducing subsequent damage to the flat cardboard box. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the strapping machine in the production line of the present invention.

[0020] Figure 2 This is a schematic diagram of the overall structure of the production line of the present invention.

[0021] Figure 3 This is a diagram showing the state of the flat cardboard box being squeezed simultaneously by the upper and lower auxiliary pressing components of the present invention.

[0022] Figure 4 This is a diagram showing the state of the compression frame and right-angle card holder of the present invention compressing a flat cardboard box.

[0023] Figure 5 This is a schematic diagram of the internal structure of a single right-angle card holder according to the present invention.

[0024] Figure 6 This is a cross-sectional view of the extrusion frame of the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of one of the strapping tape reverse push components provided by the present invention.

[0026] Figure 8 This is a schematic diagram of another strapping tape reverse push assembly provided by the present invention.

[0027] Figure 9 This diagram illustrates the state of a flat cardboard box after it has been bundled up, as it gradually expands under pressure and the elasticity of the strapping creates a curved structure at the corners, causing compression on the edges of the flat cardboard box.

[0028] The attached figures are labeled as follows: 1. Strapping machine; 11. Strapping assembly; 12. Strapping conveyor assembly; 2. Auxiliary pressing assembly; 21. Extrusion frame; 22. Extrusion driver; 221. Lifting driver; 222. Lateral driver; 223. Longitudinal driver; 23. Right-angle bracket; 231. Corner heating chamber; 24. Strapping strap slot; 25. Heating assembly; 251. Heating chamber; 252. Electric heater; 253. Air pump; 254. Air supply pipe; 26. Back thrust wheel; 27. Back thrust plate; 271. Cylinder; 3. Folding machine; 4. Carton gluing machine; 5. Die-cutting machine; 6. Printing equipment; 7. Flat carton; 71. Strapping strap. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] Refer to the instruction manual appendix Figures 1 to 9 An automated production line for paper packaging products includes a strapping machine 1, an auxiliary pressing component 2, a folding machine 3, a gluing machine 4, a die-cutting machine 5, a printing device 6, and a corrugated cardboard production equipment. The corrugated cardboard production equipment is a separate production line, which is not shown in the accompanying drawings. The processing sequence of the above production line is as follows: corrugated cardboard production equipment, printing device 6, die-cutting machine 5, gluing machine 4, folding machine 3, auxiliary pressing component 2, and strapping machine 1. Finally, the strapping machine 1 straps and packages the folded flat cartons.

[0031] It should be noted that the strapping machine 1, auxiliary pressing component 2, folding machine 3, gluing machine 4, die-cutting machine 5, printing equipment 6, and corrugated cardboard production equipment mentioned above are all indispensable processing equipment in the carton production process, and each piece of equipment is a commonly used technical solution in the prior art. Therefore, their specific processing methods and equipment structures will not be explained one by one in this embodiment.

[0032] The strapping machine 1 includes a strapping assembly 11 and a strapping conveyor assembly 12. These are commonly used strapping and conveying devices, representing existing technology commonly used in strapping machines. Therefore, their specific structure and processing methods will not be discussed in detail in this embodiment. The difference from existing technology lies in the addition of two sets of auxiliary pressing components 2 on the strapping machine 1. These two sets of auxiliary pressing components 2 are located at the subsequent workstations of the strapping assembly 11, i.e., symmetrically arranged vertically on the strapping conveyor assembly 12. The flat cardboard boxes 7 formed by the strapping assembly 11 (multiple folded flat cardboard boxes stacked together, and then...) are then... The strapping assembly 11 is used to strap the flat cardboard boxes, so that the strapping tape 71 is wrapped around the outside of the stacked flat cardboard boxes to form a flat cardboard box package 7. The auxiliary pressing assembly 2 includes a pressing frame 21 and a pressing driver 22. The pressing driver 22 is used to drive the auxiliary pressing assembly 2 to move closer to the flat cardboard box package 7. Both ends of the pressing frame 21 are provided with right-angle brackets 23, which are provided corresponding to the edges of the flat cardboard box package 7. The pressing frame 21 and the right-angle brackets 23 are provided with strapping tape slots 24 for accommodating the strapping tape 71. The right-angle brackets 23 are provided with corner heating chambers 231 corresponding to the corners of the strapping tape 71. The inner cavity of the corner heating chambers 231 is heated by the heating assembly 25.

[0033] In actual use, after the flat cardboard package 7 is bundled, it is conveyed backward by the bundling conveyor assembly 12. Before the flat cardboard package 7 is fully unfolded, the upper and lower sets of compression frames 21 are controlled to move closer to each other to compress the flat cardboard package 7. At the same time, the right-angle brackets 23 on the compression frame 21 engage the corners of the flat cardboard package 7 and engage the bundling strap 71 in the bundling strap slot 24. The corners of the rectangular structure formed by the bundling strap 71 are located in the corner heating chamber 231, and then the heating assembly 25... Heating the inner cavity of the corner heating chamber 231 heats the corners of the strapping 71. After the corners of the strapping 71 soften from the heat, they undergo plastic deformation, thereby reducing the curvature of the corners and making them as close to right angles as possible. Based on the stretching force of the flat cardboard box 7, the strapping 71 can more evenly bind the flat cardboard box, thus ensuring a tight binding of the flat cardboard box while reducing subsequent damage to the flat cardboard box.

[0034] Furthermore, in the above embodiment, the heating component 25 includes a heating chamber 251 and an air pump 253. An electric heater 252 is fixedly installed in the heating chamber 251. The air pump 253 is connected to the corner heating cavity 231 and the electric heater 252 through an air supply pipe 254. Thus, the air in the heating chamber 251 can be heated by the electric heater 252 and delivered to the corner heating cavity 231 through the air supply pipe 254, thereby heating the inner cavity of the corner heating cavity 231. It should be noted that the above is only one heating scheme of the heating component 25 provided in this embodiment. Other effective heating schemes can also be used in actual use.

[0035] Furthermore, the extrusion drive 22 includes a lifting drive 221, a transverse drive 222, and a longitudinal drive 223. The longitudinal drive 223 is fixedly mounted on the strapping conveyor assembly 12. The transverse drive 222 is mounted on the output end of the longitudinal drive 223. The lifting drive 221 is mounted on the output end of the transverse drive 222. The extrusion frame 21 is mounted on the output end of the lifting drive 221. The lifting drive 221 is used to drive the extrusion frame 21 to move up and down, and the transverse drive 222 is used to drive the extrusion frame 21 to move laterally. The longitudinal drive 223 is used to drive the longitudinal movement of the extrusion frame 21, thereby realizing the three-dimensional drive of the extrusion frame 21. Each set of auxiliary pressing components 2 can be provided with two sets of extrusion frames 21, and the corresponding extrusion drive 22 is also provided with two sets. When the flat carton package 7 is single-line bundled, only one set of extrusion frames 21 needs to be driven to the designated position. When the flat carton package 7 is double-line bundled, two sets of extrusion frames 21 can be driven to the designated position at the same time. In addition, if the flat carton package 7 is multi-line bundled, multiple sets of extrusion frames 21 can be set.

[0036] In the above embodiments, the extrusion frame 21 and the extrusion driver 22 can be detachable, so that different extrusion frames 21 can be replaced for different flat cardboard boxes 7 to form a fit. In addition, the right-angle bracket 23 can also be set as movable. For example, the right-angle bracket 23 is slidably installed on the extrusion frame 21 along the length direction of the extrusion frame 21, and the extrusion frame 21 is provided with a moving driver for driving the right-angle bracket 23 to move, so that the distance between the two right-angle brackets 23 can be adjusted to adapt to flat cardboard boxes 7 of different sizes.

[0037] It should be noted that the above-mentioned lifting drive 221, transverse drive 222 and longitudinal drive 223 all adopt common linear drive devices, such as linear motors, hydraulic cylinders and pneumatic cylinders. In order to ensure that the extrusion frame 21 has sufficient pressure, the lifting drive 221 preferably adopts a hydraulic cylinder structure.

[0038] In the above embodiment, in order to increase the looseness at the corners of the strapping 71, the right-angle card holder 23 is provided with strapping back push components on both sides of the corners of the box gluing machine 4. The strapping back push components are used to drive the material of the strapping 71 near the corner area to move closer to the corner, so as to increase the looseness at the corners of the strapping 71 and make it easier to produce plastic deformation.

[0039] Furthermore, the strapping push assembly is a push wheel 26, which is rotatably mounted in a right-angle bracket 23. The right-angle bracket 23 is a rubber wheel. When the right-angle bracket 23 engages with the flat cardboard box 7, the push wheel 26 is in contact with the surface of the strapping 71, forming frictional resistance. The push wheel 26 is driven to rotate by a motor. Thus, in actual use, by driving the push wheel 26 to rotate, the material near the corner of the strapping 71 can be pushed slightly towards the corner, thereby increasing the looseness of the corner of the strapping 71 and reducing stress concentration.

[0040] Furthermore, the strapping tape reverse push assembly is a reverse push plate 27, which is slidably installed inside the right-angle bracket 23. A cylinder 271 is fixedly installed in the right-angle bracket 23, and the reverse push plate 27 is fixedly installed at the output end of the cylinder 271. When the right-angle bracket 23 engages with the flat cardboard box 7, the reverse push plate 27 is in contact with the surface of the strapping tape 71 and forms frictional resistance. In actual use, by driving the reverse push plate 27 to move towards the corner of the strapping tape 71, the material near the corner of the strapping tape 71 can be pushed slightly towards the corner, thereby increasing the looseness of the corner of the strapping tape 71 and reducing stress concentration.

[0041] A rubber pad structure is provided at the position of the push plate 27 corresponding to the strapping 71. When the push plate 27 and the strapping 71 are engaged, the rubber pad forms elastic pressure on the strapping 71, thereby ensuring the frictional resistance between the push plate 27 and the strapping 71.

[0042] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. An automated production line for paper packaging products, characterized in that: The strapping machine (1) includes a strapping assembly (11) and a strapping conveyor assembly (12). The strapping machine (1) is also provided with two sets of auxiliary pressing assemblies (2), which are symmetrically arranged on the strapping conveyor assembly (12). Two sets of auxiliary pressing components (2) are set at the subsequent work station of the strapping component (11). The auxiliary pressing component (2) includes a pressing frame (21) and a pressing driver (22). The pressing driver (22) is used to drive the pressing frame (21) to move closer to the flat carton (7). Both ends of the pressing frame (21) are provided with right-angle brackets (23). The right-angle brackets (23) are set to the edges of the flat carton (7). The pressing frame (21) and the right-angle brackets (23) are provided with strapping slots (24) for accommodating strapping (71). The right-angle brackets (23) are provided with corner heating chambers (231) corresponding to the corners of the strapping (71). The inner cavity of the corner heating chambers (231) is heated by the heating component (25).

2. The automated production line for paper packaging products according to claim 1, characterized in that: The production line also includes a folding machine (3), a gluing machine (4), a die-cutting machine (5), printing equipment (6), and corrugated cardboard production equipment.

3. The automated production line for paper packaging products according to claim 2, characterized in that: The heating assembly (25) includes a heating chamber (251) and an air pump (253). An electric heater (252) is fixedly installed in the heating chamber (251). The air pump (253) is connected to the corner heating chamber (231) and the electric heater (252) through an air supply pipe (254).

4. The automated production line for paper packaging products according to claim 3, characterized in that: The extrusion drive (22) includes a lifting drive (221), a transverse drive (222), and a longitudinal drive (223). The longitudinal drive (223) is fixedly mounted on the strapping conveyor assembly (12). The transverse drive (222) is mounted on the output end of the longitudinal drive (223). The lifting drive (221) is mounted on the output end of the transverse drive (222). The extrusion frame (21) is mounted on the output end of the lifting drive (221). The lifting drive (221) is used to drive the extrusion frame (21) to move up and down. The transverse drive (222) is used to drive the extrusion frame (21) to move laterally. The longitudinal drive (223) is used to drive the extrusion frame (21) to move longitudinally.

5. The automated production line for paper packaging products according to claim 4, characterized in that: Both the transverse drive (222) and the longitudinal drive (223) adopt a linear motor structure, while the lifting drive (221) adopts a hydraulic cylinder structure.

6. The automated production line for paper packaging products according to claim 5, characterized in that: The number of compression frames (21) in each set of auxiliary compression components (2) corresponds to the number of strapping straps (71) on the flat cardboard box (7), and the number of compression drivers (22) corresponds to the number of compression frames (21).

7. An automated production line for paper packaging products according to claim 6, characterized in that: The right-angle bracket (23) is slidably mounted on the extrusion frame (21) along the length direction of the extrusion frame (21), and the extrusion frame (21) is provided with a moving driver for driving the right-angle bracket (23) to move.

8. An automated production line for paper packaging products according to claim 7, characterized in that: The right-angle card holder (23) is equipped with a strapping tape reverse push component on both sides of the corner of the box gluing machine (4). The strapping tape reverse push component is used to drive the material of the strapping tape (71) near the corner area to move closer to the corner.

9. An automated production line for paper packaging products according to claim 8, characterized in that: The strapping back push assembly is a back push wheel (26), which is rotatably installed in a right-angle bracket (23). The right-angle bracket (23) is a rubber wheel. When the right-angle bracket (23) engages with the flat cardboard box (7), the back push wheel (26) is in contact with the surface of the strapping (71) and forms frictional resistance. The back push wheel (26) is driven to rotate by a motor.

10. An automated production line for paper packaging products according to claim 8, characterized in that: The strapping back push assembly is a back push plate (27). The back push plate (27) is slidably installed inside the right angle bracket (23). A cylinder (271) is fixedly installed in the right angle bracket (23). The back push plate (27) is fixedly installed at the output end of the cylinder (271). When the right angle bracket (23) engages with the flat cardboard box (7), the back push plate (27) is in contact with the surface of the strapping (71) and forms frictional resistance. A rubber pad is provided at the position of the back push plate (27) corresponding to the strapping (71). When the back push plate (27) and the strapping (71) cooperate, the rubber pad forms elastic pressure on the strapping (71).

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