Paperboard folding mechanism

Abstract

The utility model relates to the technical field of carton production and processing, in particular to a paperboard folding mechanism which comprises a rack, a driving assembly, a supporting plate, a bidirectional module, a side plate and a folding plate assembly. And two conveying belts are symmetrically arranged on the rack. The driving assembly drives the conveyor belt to operate. The two supporting plates are located on the inner sides of the conveying belts on the corresponding sides and slidably connected with the lower surfaces of the upper transverse ends of the conveying belts. The two-way module is in driving connection with the supporting plates on the two sides simultaneously so as to synchronously adjust the distance between the conveying belts on the two sides and the supporting plates. The side plates are connected with the sides, away from each other, of the supporting plates. The folding plate assembly is connected with the side plates, the folding plate assembly firstly presses and positions a paperboard body in the working state, then the two sides of a paperboard are folded upwards, and finally the side edges of the paperboard are folded till the side edges of the paperboard are attached to the paperboard body. The paperboard folding device can quickly fold paperboards, is suitable for paperboards with different widths, and is convenient to adjust and simple to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of carton production and processing, in particular to a cardboard folding mechanism. Background Art

[0002] Cartons are made of cardboard, usually by cutting a complete cardboard and then folding it using a folding machine. The folded cardboard only needs to be expanded to form a complete carton when used later. However, the existing folding mechanism has a complex structure and is troublesome to operate.

[0003] The technical solution disclosed in the Chinese patent with authorization announcement number CN220883594U uses a pressing roller to indent the cardboard through the cooperation of a rotating shaft, a telescopic shaft, a sleeve and a pressing roller, and the cardboard after indentation is automatically folded under the action of a guide folding plate while being conveyed. This design can realize passive folding of the cardboard while conveying after indenting the cardboard, and the positions of the pressing roller and the guide folding plate can be adjusted by sliding to meet the use requirements of cardboards of different specifications.

[0004] However, the device still has some shortcomings: after the pressing roller applies pressure to the cardboard, the edge of the cardboard may not be able to turn up, or after turning up, it may be reset due to its own gravity. At this time, the guide folding plates on both sides apply pressure to the side edges of the cardboard in this state, which can easily cause the cardboard to wrinkle, resulting in low folding accuracy and affecting the yield rate. Utility Model Content

[0005] The utility model aims to provide a paperboard folding mechanism in view of the problems existing in the background technology.

[0006] The technical solution of the utility model is a cardboard folding mechanism, which comprises a frame, two spline shafts are symmetrically arranged on the frame, each spline shaft is symmetrically and coaxially connected with two transmission rollers, and the two sets of transmission rollers are respectively connected through a conveyor belt.

[0007] A driving assembly is connected to the frame and drives a spline shaft connected to one side.

[0008] The two groups of support plates are respectively located on the inner side of the conveyor belt on the corresponding side and are slidably connected to the lower surface of the upper horizontal end of the conveyor belt. The support plate is the same width as the conveyor belt, and the support plate is coaxial with the drive roller and is rotatably connected.

[0009] The bidirectional module is connected to the frame and simultaneously drives the support plates on both sides to synchronously adjust the distance between the conveyor belts and the support plates on both sides.

[0010] Side plates, the two side plates are respectively connected to the sides of the two support plates that are away from each other, and the side of the side plate close to the feeding end of the frame is not higher than the upper surface of the conveyor belt, while the side of the side plate close to the discharging end of the frame is higher than the upper surface of the conveyor belt.

[0011] And a folding plate assembly, the folding plate assembly is connected to the side plate. In the working state, the folding plate assembly first presses and positions the cardboard body, then turns up both sides of the cardboard, and finally folds the side of the cardboard to fit with the cardboard body.

[0012] Preferably, the through hole of the driving roller is a spline hole, and the spline shaft passes through the spline hole and is slidably connected thereto.

[0013] Preferably, a connecting plate is respectively connected to both ends of the support plate, and a ring is respectively connected to the two connecting plates on both sides. An annular groove is coaxially arranged on the driving roller, and the ring is located in the annular groove and is slidably connected to its inner wall.

[0014] Preferably, the side plate is slidably connected to the side of the conveyor belt, and a first folding station and a second folding station are respectively arranged between the two side plates along the feeding end to the discharging end of the frame.

[0015] Preferably, the folding plate assembly includes a movable plate, a bracket and a slider. The movable plate is located on the side of the side plate close to the feeding end of the frame, the movable plate is slidably connected to the side plate, and a hydraulic cylinder A for driving the movable plate to lift is arranged on the side plate. The bracket is located on the side of the side plate close to the discharging end of the frame, the bracket is rotatably connected to the side plate, the bracket is rotatably connected to a pressure roller, the radial direction of the pressure roller is parallel to the side plate, and a motor B for driving the bracket to rotate is arranged on the side plate. The slider is located at the middle position of the side plate and is slidably connected to the side plate, a pressing plate is arranged on the slider, and a hydraulic cylinder B for driving the pressing plate to lift is arranged on the side plate. The hydraulic cylinder B preferentially pushes down the pressing plate to press and position the cardboard body when the cardboard moves to the first folding station.

[0016] Preferably, a pressing plate is also arranged on the side of the slider close to the discharging end of the frame, and the pressing plate slides down along the gap between the pressure roller and the side plate in the state where the side of the cardboard is folded to fit with the cardboard body, so as to press and shape the connecting part between the cardboard body and the side of the cardboard.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] By setting the drive roller and the support plate with adjustable spacing, the device is applicable to the folding of cardboard of different sizes; by setting the pressure plate and the movable plate that moves up and down, after the pressure plate presses and positions the main body of the cardboard, the movable plate is used to push the side of the cardboard upward, so that the side of the cardboard is turned up vertically. By setting the pressure roller driven by the motor B to rotate, the pressure roller is used to push and roll the side of the cardboard in a vertical state, pressing the side of the cardboard against the main body to fit, thereby realizing the folding of the cardboard. At the same time, after the pressure roller presses the side of the cardboard against the main body of the cardboard, the utility model also uses the pressure plate to press and shape the side of the cardboard and the connecting part of the main body, avoiding the rebound and reset of the cardboard. Brief Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a schematic diagram of the connection structure of each component on the support plate;

[0021] Figure 3 is a schematic diagram of the connection structure of each component on the side plate.

[0022] Reference Numerals: 1, frame; 2, spline shaft; 3, drive roller; 4, conveyor belt; 5, motor A; 6, support plate; 7, connecting plate; 8, ring; 9, bidirectional module; 10, side plate; 11, movable plate; 12, hydraulic cylinder A; 13, bracket; 14, pressure roller; 15, motor B; 16, slider; 17, pressure plate; 18, hydraulic cylinder B. Detailed Description of the Embodiment

[0023] Embodiment 1

[0024] As shown in the figure, a cardboard folding mechanism proposed by the present utility model includes a frame 1, a drive assembly, a support plate 6, a bidirectional module 9, side plates 10, and a folding plate assembly. Two spline shafts 2 are symmetrically arranged on the frame 1. Two transmission rollers 3 are symmetrically and coaxially connected to each spline shaft 2. The through holes of the transmission rollers 3 are spline holes. The spline shaft 2 passes through the spline holes and is slidably connected thereto. The two groups of transmission rollers 3 are respectively connected by a conveyor belt 4. The drive assembly is connected to the frame 1 and is drivingly connected to one of the spline shafts 2 on one side. The two groups of support plates 6 are respectively located inside the conveyor belt 4 on the corresponding side and are slidably connected to the lower surface of the upper horizontal end of the conveyor belt 4. The support plate 6 has the same width as the conveyor belt 4. Two connecting plates 7 are respectively connected to both ends of the support plate 6. Two rings 8 are respectively connected to the two side connecting plates 7. An annular groove is coaxially arranged on the transmission roller 3. The ring 8 is located in the annular groove and is slidably connected to its inner wall. The bidirectional module 9 is connected to the frame 1 and simultaneously drivingly connects the two side support plates 6 to synchronously adjust the distances between the two conveyor belts 4 and the support plates 6. The two side plates 10 are respectively connected to the sides of the two support plates 6 that are away from each other. The side plates 10 are slidably connected to the sides of the conveyor belt 4. A first folding station and a second folding station are respectively arranged between the two side plates 10 from the feeding end to the discharging end of the frame 1. And the upper surface of the side plate 10 at the first folding station is not higher than the upper surface of the conveyor belt 4, and the upper surface of the side plate 10 at the second folding station is higher than the upper surface of the conveyor belt 4. The folding plate assembly includes a movable plate 11, a bracket 13, and a slider 16. The movable plate 11 is located on the side of the side plate 10 close to the feeding end of the frame 1. The movable plate 11 is slidably connected to the side plate 10. And a hydraulic cylinder A12 for driving the movable plate 11 to lift is arranged on the side plate 10. The bracket 13 is located on the side of the side plate 10 close to the discharging end of the frame 1. The bracket 13 is rotatably connected to the side plate 10. The bracket 13 is rotatably connected to a pressure roller 14. The radial direction of the pressure roller 14 is parallel to the side plate 10. And a motor B15 for driving the bracket 13 to rotate is arranged on the side plate 10. The slider 16 is located at the middle position of the side plate 10 and is slidably connected to the side plate 10. A pressing plate 17 is arranged on the slider 16. And a hydraulic cylinder B18 for driving the pressing plate 17 to lift is arranged on the side plate 10. The hydraulic cylinder B18 preferentially pushes down the pressing plate 17 to press and position the cardboard body when the cardboard moves to the first folding station. The folding plate assembly first presses and positions the cardboard body in the working state, then turns up both sides of the cardboard, and finally turns up the side of the cardboard to fit with the cardboard body.

[0025] In this embodiment, first, the distance between the two conveyor belts 4 is adjusted according to the specifications of the cardboard. At this time, the bidirectional module 9 is started, and the bidirectional module 9 drives the two support plates 6 to move away from or close to each other synchronously, thereby driving the distance between the two conveyor belts 4 to change synchronously, so that the sides of the two conveyor belts 4 away from each other are respectively aligned with the main crease of the cardboard. Subsequently, the cardboard is conveyed along the conveyor belt 4 to the first folding station. The hydraulic cylinder B18 presses down the slider 16 and drives the pressing plate 17 to slide down. The pressing plate 17 presses and fixes the main body of the cardboard from top to bottom, and the side of the pressing plate 17 is parallel to the crease. Subsequently, the hydraulic cylinder A12 pushes up the movable plate 11, and the movable plate 11 is used to push up the side of the cardboard to a vertical state. Subsequently, the pressing plate 17 rises, and the cardboard continues to be conveyed to the second folding station. Subsequently, the motor B15 drives the bracket 13 to rotate and drives the pressing roller 14 to rotate towards the main body of the cardboard. The pressing roller 14 gradually presses the erected side of the cardboard towards the main body of the cardboard until the side of the main board is attached to the main body of the cardboard, that is, the folding of the cardboard is completed.

[0026] Embodiment 2

[0027] As Figures 1 - 3 shown, a cardboard folding mechanism proposed by the present utility model, compared with Embodiment 1, a pressing plate 17 is also provided on one side of the slider 16 close to the discharge end of the frame 1. The pressing plate 17 slides down along the gap between the pressing roller 14 and the side plate 10 in a state where the side of the cardboard is folded to fit the main body of the cardboard, so as to press and shape the connecting part between the main body of the cardboard and the side of the cardboard.

[0028] In this embodiment, when the cardboard with both sides pushed up by the movable plate 11 to be erected moves to the second folding station, the pressing roller 14 first flips the erected side to fit the main body of the cardboard. Subsequently, the hydraulic cylinder B18 presses down the slider 16 again so that the pressing plate 17 slides down along the gap between the pressing roller 14 and the side plate 10. The pressing plate 17 presses the folded part of the main body of the cardboard and the side of the cardboard to prevent the side of the cardboard from rebounding when the pressing roller 14 leaves the cardboard.

[0029] The embodiments of the present utility model have been described in detail above with reference to the drawings. However, the present utility model is not limited thereto. Various changes can be made without departing from the spirit of the present utility model within the knowledge scope of those skilled in the art to which the present utility model pertains.

Claims

1. A cardboard folding mechanism, characterized in that: include A frame (1), two spline shafts (2) are symmetrically arranged on the frame (1), two transmission rollers (3) are symmetrically and coaxially connected to each spline shaft (2), and the two sets of transmission rollers (3) are respectively connected by a transmission belt (4); A driving assembly connected to the frame (1) and driving a spline shaft (2) connected to one side thereof; Support plates (6), two groups of support plates (6) are respectively located on the inner side of the conveyor belt (4) on the corresponding side and are slidably connected to the lower surface of the upper horizontal end of the conveyor belt (4), the support plates (6) are equal in width to the conveyor belt (4), and the support plates (6) are coaxially connected to the driving roller (3) for rotation; A bidirectional module (9), the bidirectional module (9) is connected to the frame (1) and simultaneously drives the support plates (6) on both sides to synchronously adjust the distance between the conveyor belts (4) and the support plates (6) on both sides; Side plates (10), the two side plates (10) are respectively connected to the sides of the two support plates (6) that are away from each other, and the side of the side plate (10) close to the feeding end of the frame (1) is not higher than the upper surface of the conveyor belt (4), and the side of the side plate (10) close to the discharging end of the frame (1) is higher than the upper surface of the conveyor belt (4); and a folding plate assembly connected to the side plate (10). The folding plate assembly, in a working state, first presses and positions the cardboard body, then folds the two sides of the cardboard upward, and finally folds the side edges of the cardboard until they are in contact with the cardboard body.

2. A cardboard folding mechanism according to claim 1, characterized in that: The through hole of the transmission roller (3) is a spline hole, and the spline shaft (2) passes through the spline hole and is slidably connected thereto.

3. A paperboard folding mechanism according to claim 1, characterized in that: The two ends of the support plate (6) are respectively connected to a connecting plate (7), and the connecting plates (7) on both sides are respectively connected to a circular ring (8); an annular groove is coaxially arranged on the driving roller (3), and the circular ring (8) is located in the annular groove and is slidably connected to the inner wall thereof.

4. A paperboard folding mechanism according to claim 1, characterized in that: The side panels (10) are slidably connected to the sides of the conveyor belt (4), and a first folding station and a second folding station are respectively arranged between the side panels (10) on both sides along the feeding end to the discharging end of the frame (1).

5. A paperboard folding mechanism according to claim 4, characterized in that: The folding plate assembly comprises a movable plate (11), a bracket (13) and a slide block (16); the movable plate (11) is located on a side of the side plate (10) close to the feeding end of the frame (1), the movable plate (11) is slidably connected to the side plate (10), and a hydraulic cylinder A (12) is provided on the side plate (10) for driving the movable plate (11) to rise and fall; the bracket (13) is located on a side of the side plate (10) close to the discharging end of the frame (1), the bracket (13) is rotatably connected to the side plate (10), and the bracket (13) is rotatably connected to the pressure roller (14) The radial direction of the pressing roller (14) is parallel to the side plate (10), and a motor B (15) for driving the bracket (13) to rotate is arranged on the side plate (10); the slider (16) is located at a central position on the side plate (10) and is slidably connected to the side plate (10); a pressing plate (17) is arranged on the slider (16), and a hydraulic cylinder B (18) for driving the pressing plate (17) to rise and fall is arranged on the side plate (10); when the paperboard moves to the first folding station, the hydraulic cylinder B (18) preferentially pushes the pressing plate (17) downward to apply pressure to the paperboard body for positioning.

6. A paperboard folding mechanism according to claim 5, characterized in that: A pressing plate (17) is also provided on one side of the slider (16) close to the discharge end of the frame (1). When the pressing roller (14) folds the side edge of the paperboard to fit the paperboard body, the pressing plate (17) slides down along the gap between the pressing roller (14) and the side plate (10) to apply pressure to the connection between the paperboard body and the side edge of the paperboard to shape the connection.

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