Automatic paperboard turnover device

Abstract

The utility model relates to the technical field of packaging equipment, and particularly discloses an automatic paperboard turnover device. Comprising a support, an overturning frame, an overturning motor, a double-layer belt conveying line, an overturning bracket and a paper blocking mechanism. A turnover frame capable of freely rotating in the axial direction is horizontally arranged between the two supports, two double-layer belt conveying lines are symmetrically arranged on the turnover frame in the length direction in a reciprocating mode, turnover brackets are fixedly arranged on the top face and the bottom face of the turnover frame, and a paper stopping mechanism is hinged to the paper outlet end of the turnover bracket on the top face. A paperboard can be integrally overturned through the overturning double-layer belt conveying line, and the paperboard is limited in the overturning process through the paper blocking mechanism arranged on the overturning bracket by means of gravity and a limiting structure without being driven by external force; furthermore, a distance adjusting motor capable of adjusting the distance between the two double-layer belt conveying lines is further arranged, so that the paper boards with different widths can be adapted; according to the device, manual operation is replaced, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to an automatic cardboard turning device. Background Art

[0002] Corrugated cardboard is often used in the packaging industry. After being laminated by a laminating machine and cut by a cutting machine, the cardboard will undergo certain deformation due to the molding process, resulting in asymmetrical warping. When the cardboard is stacked, the center of gravity will shift. If the cardboard is stacked at a high height, it will collapse, making it inconvenient for transportation and storage. Therefore, it is necessary to manually turn over every 20-50 sheets of cardboard, turn the top surface of the cardboard 180 degrees and stack it downward. This upside-down and right-side-up stacking method keeps the center of gravity centered when the cardboard is stacked, making it less likely to shift. However, it requires manual flipping of the cardboard on the assembly line, which is labor-intensive. Utility Model Content

[0003] The purpose of the utility model is to provide an automatic cardboard turning device to solve the problems existing in the prior art.

[0004] The utility model is implemented by the following technical scheme: a cardboard automatic turning device, including a support, a turning frame, a turning motor, a double-layer belt conveyor line, a turning bracket and a paper blocking mechanism; a turning frame that can rotate freely along the axial direction is horizontally arranged between the two supports, a turning motor is fixedly installed on the support, the output shaft of the turning motor is transmission-connected to the turning frame, two double-layer belt conveyor lines are arranged on the turning frame for symmetrical reciprocating movement along the length direction, the conveying direction of the double-layer belt conveyor line is perpendicular to the length direction of the turning frame, turning brackets are fixedly arranged on the top and bottom surfaces of the turning frame, and a paper blocking mechanism is hinged on the paper outlet end of the turning bracket on the top surface.

[0005] Furthermore, the flip bracket includes a crossbeam and a plurality of rollers symmetrically arranged on both sides of the crossbeam, and the rollers are connected to the crossbeam in a freely rotatable manner.

[0006] Furthermore, the paper blocking mechanism includes a counterweight block, a rotating shaft and a paper stopper. The rotating shaft passes through the counterweight block and is fixedly connected to the counterweight block. The counterweight block is movably hinged to the flip bracket through the rotating shaft. Two paper stops are symmetrically fixed at both ends of the rotating shaft. The paper stops are parallel to the counterweight block. A card slot matching the counterweight block is provided on the flip bracket. A first card block is integrally formed on the flip bracket at a position hinged to the rotating shaft, and a second card block is integrally formed on the rotating shaft above the position corresponding to the first card block.

[0007] Furthermore, the double-layer belt conveyor line includes a frame, a belt, rollers and a drive motor. The frame is arranged perpendicular to the flip frame, and two layers of rollers are symmetrically installed on the frame. A belt is provided on each layer of rollers, and each of the upper and lower side rollers is connected to a drive motor for transmission.

[0008] Furthermore, a slide rail is fixedly installed on the flip frame along the moving direction of the double-belt conveyor line, and sliders are fixedly installed on the top and bottom surfaces of the frame of the double-belt conveyor line respectively. The sliders are slidably arranged on the slide rails, and a screw rod is rotatably provided on the flip frame. A pitch-adjusting motor is fixedly installed on the flip frame, and the output shaft of the pitch-adjusting motor is transmission-connected to the screw rod. A sliding arm is fixedly provided on the frame, and the sliding arm is transmission-connected to the screw rod through a screw nut.

[0009] Furthermore, it also includes a paper guide, and two paper guides are symmetrically fixed on the frames of the double-layer belt conveyor line on both sides, and the two ends of the paper guide are tilted and bent outward to form an arc shape.

[0010] The advantages of the utility model are as follows: the cardboard can be turned over as a whole through the reversible double-belt conveyor line, and the paper blocking mechanism is provided, which relies on gravity and a limiting structure to limit the cardboard during the turning process, and no external force is required; further, a distance-adjusting motor is provided to adjust the distance between the two double-belt conveyor lines, which can adapt to cardboards of different widths. The above structure realizes automatic turning of the cardboard, replaces manual operation, and reduces the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 2 It is a schematic diagram of the local structure of the paper blocking mechanism.

[0013] Figure 3 This is a structural diagram of a double-layer belt conveyor line.

[0014] Figure 4 This is a schematic diagram of the connection between the flip frame and the double-layer belt conveyor line.

[0015] In the figure: support 1, flip frame 2, flip motor 3, double-layer belt conveyor line 4, flip bracket 5, paper blocking mechanism 6, paper guide 7, slide rail 201, slider 202, screw 203, pitch adjustment motor 204, frame 401, belt 402, belt roller 403, drive motor 404, slide arm 405, beam 501, roller 502, first clamping block 503, clamping slot 504, counterweight block 601, rotating shaft 602, paper stopper 603, second clamping block 604. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center", "up", "down", "front", "back", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] like Figure 1The figure shows: an automatic cardboard turning device, including a support 1, a turning frame 2, a turning motor 3, a double-layer belt conveyor line 4, a turning bracket 5 and a paper blocking mechanism 6; a turning frame 2 that can rotate freely along the axial direction is horizontally provided between the two supports 1, and a turning motor 3 is fixedly installed on the support 1. The output shaft of the turning motor 3 is transmission-connected to the turning frame 2. Driven by the turning motor 3, the turning frame 2 rotates with the connecting line between the two ends of the turning frame 2 as the axis, and two double-layer belt conveyor lines 4 are symmetrically moved back and forth along the length direction on the turning frame 2. When the turning frame 2 is turned over, the double-layer belt conveyor line 4 can be driven to turn over together; the upper and lower layers of the double-layer belt conveyor line 4 can be used to convey cardboard. When one of the belts 402 of the double-layer belt conveyor line 4 is located at the bottom, both sides of the cardboard are in contact with the belt 402, and the cardboard is conveyed by friction. The conveying direction of the double-layer belt conveyor line 4 is perpendicular to the length direction of the turning frame 2. The top and bottom surfaces are fixedly provided with a turning bracket 5, which includes a crossbeam 501 and several rollers 502 symmetrically arranged on both sides of the crossbeam 501. The rollers 502 are freely rotatably connected to the crossbeam 501. The two sides of the cardboard are supported by the double-layer belt conveyor line 4, and the middle part of the cardboard is supported by the rollers 502. When the turning frame 2 is turned over, the cardboard placed on the double-layer belt conveyor line 4 is also turned over together; a paper stopping mechanism 6 is hinged on the paper discharge end of the top turning bracket 5. Since the cardboard will slide downward when turning over, when the double-layer belt conveyor line 4 is horizontally turned to a certain angle, the cardboard will slide in the paper discharge direction under the action of gravity. The paper stopping mechanism 6 blocks the position of the paper discharge port to block the cardboard. After the double-layer belt conveyor line 4 is turned 180 degrees, the paper stopping mechanism 6 is turned from the paper discharge port to the direction of the paper feed port. At this time, the cardboard has completed its turning, and the paper stopping mechanism 6 no longer blocks the paper discharge. The cardboard can continue to be transferred to the next process under the drive of the double-layer belt conveyor line 4.

[0019] like Figure 2As shown: the paper blocking mechanism 6 includes a counterweight block 601, a rotating shaft 602 and a paper stopper 603. The rotating shaft 602 passes through the counterweight block 601 and is fixedly connected to the counterweight block 601. The counterweight block 601 is movably hinged to the flip bracket 5 through the rotating shaft 602, and the rotating shaft 602 can rotate freely. Two paper stops 603 are symmetrically fixed at both ends of the rotating shaft 602. The paper stoppers 603 are parallel to the counterweight block 601. A card slot 504 matching the counterweight block 601 is provided on the flip bracket 5. A first card block 503 is integrally formed on the flip bracket 5 at a position hinged to the rotating shaft 602, and a second card block 604 is integrally formed on the rotating shaft 602 above the position corresponding to the first card block 503. When the paper blocking mechanism 6 is at the top, the counterweight block 601 is in a vertical downward state under the action of gravity. At this time, the second card block 604 rotates until it contacts the first card block 503 When the paper sheet is fed back from the conveyor belt 402, the counterweight 601 will fall down around the rotating shaft 602 under the action of gravity until the counterweight 601 falls into the card slot 504. At this time, the paper sheet 603 is in a horizontal state and will not affect the next stack of paper sheets entering the double-layer belt conveyor line 4. It should be noted that the counterweight 601 is in a vertical state and will not fall down by itself even if it is in a vertical state. When the next stack of paper sheets enters from the paper inlet, it will also knock down the counterweight 601, so it will not affect the normal paper feeding.

[0020] like Figure 3 As shown: the double-layer belt conveyor line 4 includes a frame 401, a belt 402, a belt roller 403 and a drive motor 404. The frame 401 is arranged perpendicular to the flip frame 2. Two layers of belt rollers 403 are symmetrically installed on the frame 401. Each layer of belt rollers 403 is provided with a belt 402. The upper and lower side belt rollers 403 are each transmission-connected to a drive motor 404. Only one of the two ends of each layer of belt rollers 403 is transmission-connected to the drive motor 404. The other belt rollers 403 rotate freely and only provide support for the belt 402. In order to ensure smooth feeding of cardboard, a paper guide 7 for guiding the direction of the cardboard is also provided. The two paper guides 7 are symmetrically fixedly mounted on the frames 401 of the double-layer belt conveyor lines 4 on both sides. The two ends of the paper guides 7 are tilted and bent outward in an arc shape. When the cardboard fed into the double-layer belt conveyor line 4 is offset, the paper guides 7 contact the edge of the cardboard to correct the cardboard.

[0021] like Figure 4As shown: a slide rail 201 is fixedly installed on the turning frame 2 along the moving direction of the double-layer belt conveyor line 4, and a slider 202 is fixedly installed on the top and bottom surfaces of the frame 401 of the double-layer belt conveyor line 4. The slider 202 is slidably set on the slide rail 201, and a screw rod 203 is rotated on the turning frame 2. A pitch-adjusting motor 204 is fixedly installed on the turning frame 2, and the output shaft of the pitch-adjusting motor 204 is transmission-connected with the screw rod 203. A slide arm 405 is fixed on the frame 401, and the slide arm 405 is transmission-connected with the screw rod 203 through a screw nut. The upper and lower pitch-adjusting motors 204 rotate synchronously, which can drive the screw rod 203 to rotate, drive the slide arm 405 to move along the length direction of the screw rod 203, and then drive the double-layer belt conveyor line 4 to move along the slide rail 201, adjust the distance between the two driven double-layer belt conveyor lines 4, thereby adapting to cardboards of different widths and ensuring that the cardboard does not deviate during the transportation process.

[0022] Working principle: Before use, the distance between the two double-layer belt conveyor lines 4 is adjusted according to the width of the cardboard, so that the cardboard can just slide between the two paper guides 7, and then the flipping direction of the flip frame 2 is adjusted according to the direction of the first stack of cardboard. When the first stack of cardboard needs to be flipped, the flip frame 2 is controlled to flip and the flip bracket 5 with the paper blocking mechanism 6 is turned upward, and then the double-layer belt conveyor line 4 is started. The cardboard is fed from the paper inlet by the double-layer belt conveyor line 4, and then the flip frame 2 is flipped, the cardboard is turned 180 degrees, and continues to be fed out from the paper outlet. The next stack of cardboard is in the forward direction and is directly fed into the paper inlet and then fed out from the paper outlet without flipping; then the next stack of cardboard needs to be flipped again, and before feeding the paper, the flip frame 2 is first flipped 180 degrees and then the paper is fed. Repeat the above actions to automatically flip the cardboard; it should be noted that the above working process is only one working state of this embodiment, and the frequency of flipping can be adjusted as needed to adapt to different working states.

Claims

1. A cardboard automatic turning device, characterized in that: The invention comprises a support (1), a flip frame (2), a flip motor (3), a double-layer belt conveyor line (4), a flip bracket (5) and a paper blocking mechanism (6); a flip frame (2) which is freely rotatable along the axial direction is horizontally provided between the two supports (1); a flip motor (3) is fixedly installed on the support (1); an output shaft of the flip motor (3) is transmission-connected to the flip frame (2); two double-layer belt conveyor lines (4) are symmetrically reciprocating along the longitudinal direction on the flip frame (2); the conveying direction of the double-layer belt conveyor lines (4) is perpendicular to the longitudinal direction of the flip frame (2); flip brackets (5) are fixedly provided on the top and bottom surfaces of the flip frame (2); and a paper blocking mechanism (6) is hingedly connected to the paper outlet end of the top flip bracket (5).

2. The automatic cardboard turning device according to claim 1, characterized in that: The turning bracket (5) comprises a crossbeam (501) and a plurality of rollers (502) symmetrically arranged on both sides of the crossbeam (501), and the rollers (502) are connected to the crossbeam (501) in a freely rotatable manner.

3. The automatic cardboard turning device according to claim 1, characterized in that: The paper blocking mechanism (6) comprises a counterweight (601), a rotating shaft (602) and a paper stopper (603). The rotating shaft (602) passes through the counterweight (601) and is fixedly connected to the counterweight (601). The counterweight (601) is movably hinged to the flip bracket (5) via the rotating shaft (602). Two paper stoppers (603) are symmetrically fixedly provided at both ends of the rotating shaft (602). The paper stoppers (603) are parallel to the counterweight (601). A card slot (504) matching the counterweight (601) is provided on the flip bracket (5). A first card block (503) is integrally formed on the flip bracket (5) at a position hinged to the rotating shaft (602). A second card block (604) is integrally formed on the rotating shaft (602) above a position corresponding to the first card block (503).

4. The automatic cardboard turning device according to claim 1, characterized in that: The double-layer belt conveyor line (4) comprises a frame (401), a belt (402), a belt roller (403) and a drive motor (404). The frame (401) is arranged perpendicular to the flip frame (2). Two layers of belt rollers (403) are symmetrically mounted on the frame (401). Each layer of belt rollers (403) is provided with a belt (402). The upper and lower side belt rollers (403) are each transmission-connected to a drive motor (404).

5. The automatic cardboard turning device according to claim 4, characterized in that: A slide rail (201) is fixedly installed on the flip frame (2) along the moving direction of the double-layer belt conveyor line (4), and sliders (202) are fixedly installed on the top and bottom surfaces of the frame (401) of the double-layer belt conveyor line (4). The slider (202) is slidably arranged on the slide rail (201), and a screw rod (203) is rotatably provided on the flip frame (2). A pitch-adjusting motor (204) is fixedly installed on the flip frame (2), and the output shaft of the pitch-adjusting motor (204) is transmission-connected to the screw rod (203). A sliding arm (405) is fixedly provided on the frame (401), and the sliding arm (405) is transmission-connected to the screw rod (203) via a screw nut.

6. The automatic cardboard turning device according to claim 5, characterized in that: It also includes paper guides (7), two paper guides (7) are symmetrically fixedly mounted on the racks (401) of the double-layer belt conveyor lines (4) on both sides, and the two ends of the paper guides (7) are tilted outward and bent into an arc shape.

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