Carton folding creasing aid

Abstract

The utility model discloses a carton folding indentation auxiliary device relates to carton folding field, including two groups of indentation mechanism who sets up oppositely, the paperboard conveying channel is formed between two groups of indentation mechanism, and indentation mechanism includes upper mounting panel and lower mounting panel, and the conveying space for paperboard to pass through is formed between upper mounting panel and lower mounting panel, and the side wall of lower mounting panel away from paperboard conveying channel is fixed with the paperboard support, and the side wall of upper mounting panel away from paperboard conveying channel is installed with the line cutter that bumps, and the line cutter has the freedom of moving close to or away from the paperboard support, is used for extruding the indentation on paperboard in the process of paperboard conveying, before paperboard enters the folding procedure of paste-nailing integrated machine, utilizes the line cutter that can move up and down and cooperates with the paperboard support, and the paperboard is accurately extruded on the preset indentation. The indentation provides " directional deformation path " for paperboard fiber, and effectively avoids the folding deviation problem caused by the disorder resistance deformation of fiber when there is no indentation.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box folding technology, specifically to a cardboard box folding and creasing auxiliary device. Background Technology

[0002] In a large-scale corrugated box production system, the stapler-gluer is the core equipment connecting cardboard processing and finished box forming. It integrates two key functions: "cardboard splicing" and "box shape fixing." It can choose between "stacking" or "gluing" forming processes depending on requirements and is widely used in the mass production of corrugated boxes, heavy-duty packaging boxes, and other products. The stapler-gluer uses pre-cut cardboard sheets as raw material (usually a single, unfolded box blank). Through four automated stages—conveyance, positioning, forming, and fixing—it completes the transformation from flat cardboard to three-dimensional corrugated boxes. Currently, stapler-gluers fold the cardboard. At this stage, the cardboard fibers are in a naturally intact state, and orderly deformation along a predetermined path is not possible during the folding process. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a carton folding and creasing auxiliary device to solve the shortcomings of the prior art.

[0004] The purpose of this utility model is achieved through the following technical solution: a cardboard box folding and creasing auxiliary device, comprising two sets of creasing mechanisms arranged opposite to each other, forming a cardboard conveying channel between the two sets of creasing mechanisms, each creasing mechanism comprising an upper mounting plate and a lower mounting plate, forming a conveying space for cardboard to pass through between the upper mounting plate and the lower mounting plate, a support plate being fixed to the side wall of the lower mounting plate away from the cardboard conveying channel, and a creasing knife being installed on the side wall of the upper mounting plate away from the cardboard conveying channel, the creasing knife having the freedom to move closer to or away from the support plate, for pressing out creasing on the cardboard during the cardboard conveying process.

[0005] Furthermore, the upper mounting plate is equipped with two linear guide rails spaced apart along the conveying direction of the cardboard. The linear guide rails are vertically installed, and guide rail slides are slidably mounted on the linear guide rails. The two ends of the thread-contacting knife are respectively mounted on the two guide rail slides.

[0006] Furthermore, a wire-contacting cylinder assembly is mounted on the upper mounting plate. The wire-contacting cylinder assembly includes a cylinder, a wire-contacting drive plate, and a wire-contacting plate. The wire-contacting plate is horizontally disposed on the upper mounting plate. The wire-contacting drive plate is located between the wire-contacting plate and the wire-contacting knife. An upper connecting rod and a lower connecting rod are respectively hinged to the upper and lower parts of the wire-contacting drive plate. The upper connecting rod is hinged to the wire-contacting plate, and the lower connecting rod is hinged to the wire-contacting knife. The cylinder body is hinged to the upper mounting plate, and the telescopic shaft of the cylinder is hinged to one end of the wire-contacting drive plate.

[0007] Furthermore, a pre-pressing mechanism is installed on the side wall of the upper mounting plate away from the paperboard conveying channel. The paperboard passes through the pre-pressing mechanism and the paperboard support in sequence. The pre-pressing mechanism includes a pressure roller plate and a pressing roller. The pressure roller plate is slidably mounted on the upper mounting plate and has the freedom to move closer to or away from the paperboard support. The pressing roller is rotatably mounted on the pressure roller plate.

[0008] Furthermore, the pre-pressing mechanism also includes a pressing guide rail and a lead screw. The pressing guide rail is vertically mounted on the upper mounting plate, and a pressing slider is slidably mounted on the pressing guide rail. The pressing wheel plate is mounted on the pressing slider, and the lead screw is rotatably mounted on the upper mounting plate. A lead screw nut is fixed on the pressing wheel plate, and the lead screw nut is threaded onto the lead screw.

[0009] Furthermore, a pressing roller is rotatably mounted on the lower mounting plate, the pressing roller is arranged directly below the pressing roller, and a window is provided on the support plate for the pressing roller to partially pass through.

[0010] Furthermore, a pressing line conveying assembly is installed on the side wall of the lower mounting plate near the cardboard conveying channel. The pressing line conveying assembly includes a conveyor wheel and a conveyor belt. Several conveyor wheels are rotatably mounted on the lower mounting plate. The several conveyor wheels are connected by a conveyor belt. A pressing line drive wheel is coaxially fixed to the pressing line wheel. The conveyor belt passes around the pressing line drive wheel.

[0011] Furthermore, an auxiliary conveying assembly is provided on the side wall of the upper mounting plate near the cardboard conveying channel. The auxiliary conveying assembly includes a conveying support plate and auxiliary pressure rollers. Several auxiliary pressure rollers are rotatably mounted on the conveying support plate, and the several auxiliary pressure rollers are arranged linearly along the cardboard conveying direction.

[0012] Furthermore, two guide rails are spaced apart along the cardboard conveying direction on the upper mounting plate, and slide blocks are slidably mounted on the guide rails. The two ends of the conveying support plate are fixed on the two slide blocks. A support plate screw is rotatably mounted on the upper mounting plate, and a support screw nut is threaded onto the support plate screw. The support screw nut is fixedly connected to the conveying support plate.

[0013] Furthermore, the top of the support plate is provided with an indentation linear groove, which is located directly below the crimping knife.

[0014] The beneficial effects of this utility model are: Two sets of opposing creasing mechanisms precisely press pre-set indentations onto the cardboard before it enters the folding process of the gluing and stapling machine. These indentations, achieved through a vertically movable creasing knife working in conjunction with the supporting cardboard, provide a "directional deformation path" for the cardboard fibers. This effectively avoids the folding offset problem caused by disordered fiber deformation without indentations. Furthermore, the pre-set indentations only act on localized fibers of the cardboard, without damaging the corrugated structure, ensuring the carton's load-bearing capacity remains unaffected. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a cardboard box folding and creasing auxiliary device according to the present invention; Figure 2 This is a front view of a cardboard box folding and creasing auxiliary device according to the present invention; Figure 3 for Figure 1 Enlarged view of point A in the middle; In the diagram, 1-upper mounting plate, 2-lower mounting plate, 3-support plate, 4-line-feeding knife, 5-linear guide rail, 6-guide rail slide, 7-cylinder, 8-line-feeding drive plate, 9-line-feeding plate, 10-upper connecting rod, 11-lower connecting rod, 12-pressure roller plate, 13-line-feeding roller, 14-line-feeding guide rail, 15-lead screw, 16-lead screw female seat, 17-line-feeding lower roller, 18-transmission roller, 19-transmission belt, 20-line-feeding transmission roller, 21-transmission support plate, 22-auxiliary pressure roller, 23-guide rail, 24-support plate lead screw, 25-support lead screw female seat, 26-indentation linear groove. Detailed Implementation

[0016] Example 1 like Figures 1 to 3 As shown, a cardboard box folding and creasing auxiliary device includes two sets of creasing mechanisms arranged opposite to each other, forming a cardboard conveying channel between the two sets of creasing mechanisms. The creasing mechanism includes an upper mounting plate 1 and a lower mounting plate 2, forming a conveying space for the cardboard to pass through. A support plate 3 is fixed to the side wall of the lower mounting plate 2 away from the cardboard conveying channel. A creasing knife 4 is installed on the side wall of the upper mounting plate 1 away from the cardboard conveying channel. The creasing knife 4 has the freedom to move closer to or away from the support plate 3, and is used to squeeze creasing on the cardboard during the cardboard conveying process. The creasing auxiliary device is installed in front of the folding component in the stapler and gluer. Through the cooperation of the creasing knife 4 and the support plate 3, a folding creasing is first applied to the cardboard. This creasing provides a "directional deformation path" for the cardboard fibers, reducing the cardboard slippage and jamming caused by the lack of creasing. It effectively avoids the problem of folding offset caused by disordered fiber deformation when there is no creasing. At the same time, the preset creasing only acts on the local fibers of the cardboard and will not damage the flute structure of the corrugated cardboard, ensuring that the load-bearing capacity of the carton is not affected.

[0017] Furthermore, such as Figure 1and Figure 3 As shown, the top of the paperboard 3 is provided with an indentation linear groove 26, which is located directly below the creasing knife 4. The creasing knife is precisely aligned with the indentation linear groove on the top of the paperboard. When the paperboard is pressed and creasing is performed, excessive stretching of the paperboard surface fibers can be avoided, which significantly reduces the occurrence rate of appearance defects such as "bursting" and "wrinkling".

[0018] Example 2 Based on Example 1, such as Figure 1 and Figure 2 As shown, two linear guide rails 5 are installed at intervals along the conveying direction of the cardboard on the upper mounting plate 1. The linear guide rails 5 are installed vertically, and guide rail slides 6 are slidably mounted on the linear guide rails 5. The two ends of the thread-contacting knife 4 are respectively mounted on the two guide rail slides 6. A thread-contacting cylinder assembly is installed on the upper mounting plate 1. The thread-contacting cylinder assembly includes a cylinder 7, a thread-contacting drive plate 8, and a thread-contacting plate 9. The thread-contacting plate 9 is horizontally set on the upper mounting plate 1. The thread-contacting drive plate 8 is located between the thread-contacting plate 9 and the thread-contacting knife 4. The upper part and the lower part of the thread-contacting drive plate 8 are respectively hinged to an upper connecting rod 10 and a lower connecting rod 11. The upper connecting rod 10 is hinged to the thread-contacting plate 9, and the lower connecting rod 11 is hinged to the thread-contacting knife 4. The cylinder body of the cylinder 7 is hinged to the upper mounting plate 1, and the telescopic shaft of the cylinder 7 is hinged to one end of the thread-contacting drive plate 8. When the cylinder 7 extends, the cylinder 7 drives the thread-contacting drive plate 8 to move. The line-contact drive plate 8 has a degree of deflection freedom, allowing it to adapt to the deflection freedom of the upper connecting rod 10 and the lower connecting rod 11, enabling it to move smoothly. Since the position of the line-contact plate 9 is fixed, it will drive the line-contact drive plate 8 to deflect and move upward through the upper connecting rod 10. The line-contact drive plate 8 will drive the line-contact knife 4 to move upward through the lower connecting rod 11. Then, the cylinder 7 will retract and reset, causing the line-contact drive plate 8 to move back, deflecting and moving downward simultaneously. This will cause the line-contact drive plate 8 to drive the line-contact knife 4 to move downward, causing the line-contact knife 4 to press the cardboard on the support plate 3, thereby creating an indentation on the cardboard. Through the reciprocating extension and retraction of the cylinder 7, the line-contact knife 4 creates an indentation on the conveyed cardboard. To avoid affecting the conveying of the cardboard, the cardboard is conveyed forward when the line-contact knife 4 moves upward, and the cardboard stops conveying when the line-contact knife 4 presses the cardboard.

[0019] Example 3 Based on Example 2, such as Figure 1 and Figure 2As shown, a pre-pressing mechanism is installed on the side wall of the upper mounting plate 1 away from the cardboard conveying channel. The cardboard passes through the pre-pressing mechanism and the support plate 3 in sequence. The pre-pressing mechanism includes a pressure roller plate 12 and a pressing roller 13. The pressure roller plate 12 is slidably mounted on the upper mounting plate 1 and has the freedom to move closer to or away from the support plate 3. The pressing roller 13 is rotatably mounted on the pressure roller plate 12. A pressing lower roller 17 is rotatably mounted on the lower mounting plate 2 and is arranged directly below the pressing roller 13. The support plate 3 has a window for the pressing lower roller 17 to pass through partially. The cooperation between the pressing roller 13 and the pressing lower roller 17 weakens the local fibers of the cardboard in advance, avoiding fiber breakage or structural damage caused by direct heavy pressure, while ensuring the consistency of the indentation position. The cardboard that has been pre-pressed enters the subsequent support plate area, ready to receive precise indentation by the creasing knife. Since the pre-press shallow marks have set the "directional deformation benchmark" for the paperboard fibers, when the crease knife is pressed later, the paperboard will form a deep indentation along the direction of the pre-press shallow marks, avoiding indentation deviation or misalignment.

[0020] Example 4 Based on Embodiment 3, the pre-pressing mechanism further includes a pressing guide rail 14 and a lead screw 15. The pressing guide rail 14 is vertically mounted on the upper mounting plate 1, and a pressing slider is slidably mounted on the pressing guide rail 14. The pressing wheel plate 12 is mounted on the pressing slider, and the lead screw 15 is rotatably mounted on the upper mounting plate 1. A lead screw nut 16 is fixed on the pressing wheel plate 12, and the lead screw nut 16 is threaded onto the lead screw 15. By rotating the lead screw 15, the lead screw nut 16 moves linearly along the axial direction of the lead screw 15, thereby driving the pressing wheel plate 12 to move up and down, thereby adjusting the gap between the pressing wheel 13 and the lower pressing wheel 17 to accommodate paperboard of different thicknesses.

[0021] Example 5 Based on Example 4, such as Figure 1As shown, a contact line conveying assembly is installed on the side wall of the lower mounting plate 2 near the cardboard conveying channel. The contact line conveying assembly includes conveyor wheels 18 and a conveyor belt 19. Several conveyor wheels 18 are rotatably mounted on the lower mounting plate 1, and the several conveyor wheels 18 are connected by the conveyor belt 19. A pressure thread drive wheel 20 is coaxially fixed to the pressure thread drive wheel 17. The conveyor belt 19 passes over the pressure thread drive wheel 20. An auxiliary conveying assembly is provided on the side wall of the upper mounting plate 2 near the cardboard conveying channel. The auxiliary conveying assembly includes a conveying support plate 21 and auxiliary pressure rollers 22. Several auxiliary pressure rollers 22 are rotatably mounted on the conveying support plate 21. The several auxiliary pressure rollers 22 are linearly arranged along the cardboard conveying direction. The cardboard is contacted... The offline conveyor assembly and the auxiliary conveyor assembly convey the paperboard forward. One of the conveyor wheels 18 is connected to a motor, which drives the other conveyor wheels 18 to rotate via the conveyor belt 19. The paperboard is placed on the conveyor belt 19 and thus conveyed. The paperboard extends onto the support paperboard 3 through the gap between the upper mounting plate 1 and the lower mounting plate 2, thereby creating creases on both sides of the paperboard to facilitate subsequent folding operations. At the same time, the conveyor belt 19 drives the creasing drive wheel 20 to rotate, which in turn drives the creasing lower wheel 17 to rotate. During the process of creating the pre-set creases, the paperboard is conveyed synchronously with the offline conveyor assembly.

[0022] Furthermore, two guide rails 23 are spaced apart on the upper mounting plate 2 along the cardboard conveying direction. Slide seats are slidably mounted on the guide rails 23. The two ends of the conveying support plate 21 are fixed on the two slide seats. A support plate screw 24 is rotatably mounted on the upper mounting plate 2. A support screw nut 25 is threaded onto the support plate screw 24. The support screw nut 25 is fixedly connected to the conveying support plate 21. Rotating the support plate screw 24 causes the support screw nut 25 to move along the axial direction of the support plate screw 24, which can adjust the distance between the auxiliary pressure roller 22 and the conveyor belt 19 to accommodate the conveying of cardboard of different thicknesses.

Claims

1. A cardboard box folding and creasing auxiliary device, characterized in that, It includes two sets of creasing mechanisms arranged opposite each other, forming a paperboard conveying channel between the two sets of creasing mechanisms. The creasing mechanism includes an upper mounting plate (1) and a lower mounting plate (2). A conveying space for paperboard to pass through is formed between the upper mounting plate (1) and the lower mounting plate (2). A support plate (3) is fixed on the side wall of the lower mounting plate (2) away from the paperboard conveying channel. A crease cutter (4) is installed on the side wall of the upper mounting plate (1) away from the paperboard conveying channel. The crease cutter (4) has the freedom to move closer to or away from the support plate (3) and is used to squeeze creasing on the paperboard during the paperboard conveying process.

2. The cardboard box folding and creasing auxiliary device according to claim 1, characterized in that, The upper mounting plate (1) is equipped with two linear guide rails (5) at intervals along the conveying direction of the cardboard. The linear guide rails (5) are installed vertically, and guide rail slides (6) are slidably mounted on the linear guide rails (5). The two ends of the thread-contacting knife (4) are respectively mounted on the two guide rail slides (6).

3. The cardboard box folding and creasing auxiliary device according to claim 2, characterized in that, The upper mounting plate (1) is equipped with a wire-contacting cylinder assembly, which includes a cylinder (7), a wire-contacting drive plate (8), and a wire-contacting plate (9). The wire-contacting plate (9) is horizontally arranged on the upper mounting plate (1). The wire-contacting drive plate (8) is located between the wire-contacting plate (9) and the wire-contacting knife (4). The upper part and the lower part of the wire-contacting drive plate (8) are respectively hinged with an upper connecting rod (10) and a lower connecting rod (11). The upper connecting rod (10) is hinged on the wire-contacting plate (9), and the lower connecting rod (11) is hinged on the wire-contacting knife (4). The cylinder body of the cylinder (7) is hinged on the upper mounting plate (1), and the telescopic shaft of the cylinder (7) is hinged to one end of the wire-contacting drive plate (8).

4. The cardboard box folding and creasing auxiliary device according to claim 1, characterized in that, The upper mounting plate (1) has a pre-pressing mechanism installed on the side wall away from the paperboard conveying channel. The paperboard passes through the pre-pressing mechanism and the support paperboard (3) in sequence. The pre-pressing mechanism includes a pressure roller plate (12) and a pressing wheel (13). The pressure roller plate (12) is slidably mounted on the upper mounting plate (1). The pressure roller plate (12) has the freedom to move closer to or away from the support paperboard (3). The pressing wheel (13) is rotatably mounted on the pressure roller plate (12).

5. The cardboard box folding and creasing auxiliary device according to claim 4, characterized in that, The pre-pressing mechanism also includes a pressing guide rail (14) and a lead screw (15). The pressing guide rail (14) is vertically mounted on the upper mounting plate (1). A pressing slider is slidably mounted on the pressing guide rail (14). The pressing wheel plate (12) is mounted on the pressing slider. The lead screw (15) is rotatably mounted on the upper mounting plate (1). A lead screw nut (16) is fixed on the pressing wheel plate (12). The lead screw nut (16) is threaded onto the lead screw (15).

6. The cardboard box folding and creasing auxiliary device according to claim 5, characterized in that, The lower mounting plate (2) is rotatably provided with a pressing roller (17), which is arranged directly below the pressing roller (13). The support plate (3) has a window for the pressing roller (17) to pass through partially.

7. A cardboard box folding and creasing auxiliary device according to claim 6, characterized in that, The lower mounting plate (2) is equipped with a contact line conveying assembly near the side wall of the cardboard conveying channel. The contact line conveying assembly includes a conveyor wheel (18) and a conveyor belt (19). Several conveyor wheels (18) are rotatably mounted on the lower mounting plate (2). The several conveyor wheels (18) are connected by a transmission belt (19). The pressing wheel (17) is coaxially fixed with a pressing drive wheel (20). The conveyor belt (19) passes around the pressing drive wheel (20).

8. A carton folding and creasing auxiliary device according to claim 7, characterized in that, The upper mounting plate (1) is provided with an auxiliary conveying component on the side wall near the cardboard conveying channel. The auxiliary conveying component includes a conveying support plate (21) and auxiliary pressure rollers (22). Several auxiliary pressure rollers (22) are rotatably mounted on the conveying support plate (21), and the several auxiliary pressure rollers (22) are arranged linearly along the cardboard conveying direction.

9. A carton folding and creasing auxiliary device according to claim 8, characterized in that, The upper mounting plate (1) is provided with two guide rails (23) spaced apart along the paperboard conveying direction. Slide seats are slidably mounted on the guide rails (23). The two ends of the conveying support plate (21) are fixed on the two slide seats. A support plate screw (24) is rotatably mounted on the upper mounting plate (1). A support screw female seat (25) is threaded onto the support plate screw (24). The support screw female seat (25) is fixedly connected to the conveying support plate (21).

10. A carton folding and creasing auxiliary device according to claim 1, characterized in that, The top of the paperboard (3) is provided with an indentation linear groove (26), which is located directly below the crease cutter (4).

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