Corrugated board flattening device

Abstract

A corrugated board flattening device comprises a rack, a bottom plate, a pressing plate, an air cylinder, sliding rails, sliding blocks, a lifting mechanism and a scale plate, the rack is divided into two layers, supporting legs are arranged at the bottom of the rack, the four vertically-downward sliding rails are installed between the upper layer and the lower layer, the sliding blocks corresponding to the sliding rails are fixedly arranged on the bottom plate, the air cylinder is installed at the top of the rack, and the lifting mechanism is installed on the bottom plate. The lifting mechanism comprises a screw, two transverse rods, a bearing seat, connecting rods and a rotating hand wheel, threads opposite in rotating direction are arranged on the two sides of the screw, the two transverse rods are installed on the two sides of the screw through the threads respectively, the two ends of the transverse rods are hinged to the connecting rods, and the connecting rods are hinged to the two ends of a transverse shaft at the bottom of the bottom plate. The height of the bottom plate is adjusted by rotating the rotating handle, the distance between the bottom plate and the pressing plate can be accurately adjusted, and the corrugated board flattening device is suitable for flattening corrugated boards of various thicknesses and is simple and reliable in structure and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated paper production equipment, in particular to a corrugated board flattening device. Background Technique

[0002] Corrugated board is formed by bonding multiple layers of paper with glue. It consists of at least one layer of wavy core paper sandwiched between and one layer of cardboard, and has relatively high mechanical strength, capable of withstanding collisions and drops during handling. The actual performance of corrugated board depends on three factors: the characteristics of the core paper and cardboard, and the structure of the carton itself.

[0003] During the production and processing of corrugated board, a flattening machine is needed for flattening to prevent deformation due to expansion and contraction during the bonding and drying process. Currently, the flattening machine cannot accurately adjust the distance between the pressing plate and the bottom plate, and is not applicable to corrugated boards of various thicknesses. If the distance between the pressing plate and the bottom plate is too small, the corrugated board will be damaged, resulting in waste. Content of the Utility Model

[0004] To solve the problems mentioned in the above background technique, the utility model provides a corrugated board flattening device.

[0005] The utility model discloses the following technical solutions: A corrugated board flattening device includes a frame, a bottom plate, a pressing plate, a cylinder, a slide rail, a slider, a lifting mechanism, and a scale plate. The frame has two layers, with legs provided at the bottom, and four vertically downward slide rails are installed between the upper and lower layers. Sliders corresponding to the slide rails are fixedly provided on the bottom plate. A cylinder is installed at the top of the frame, and the telescopic rod of the cylinder passes through the upper layer of the frame and is connected to the pressing plate. The lifting mechanism includes a screw rod, a cross bar, bearing seats, connecting rods, and a rotating handwheel. Threads with opposite helix directions are provided on both sides of the screw rod. A threaded hole matching the screw rod is provided in the middle of the cross bar. The cross bar is composed of two and is respectively installed on both sides of the screw rod through threads. The two ends of the cross bar are hinged to the connecting rods. Two cylindrical horizontal shafts are provided at the bottom of the bottom plate, and the connecting rods are hinged to the two ends of the horizontal shafts at the bottom of the bottom plate. The screw rod is installed on the lower layer of the frame through a bearing seat, and a rotating handwheel is installed at one end of the screw rod. The scale plate is marked with scales and is vertically and fixedly installed on the frame, and the upper end of the scale plate corresponds to the lowest position of the pressing plate.

[0006] Further, the slide rail is a cylindrical slide rail.

[0007] Further, there are three bearing seats, which are respectively located in the middle and at both ends of the screw rod.

[0008] Further, sliders corresponding to the slide rails are also provided on both sides of the pressing plate.

[0009] Beneficial effects: Compared with the prior art, the telescopic rod of the cylinder of the corrugated cardboard flattening device of the present utility model is connected to the pressing plate, and the stroke of the telescopic rod is fixed. By providing a lifting mechanism at the lower end of the bottom plate and a scale on the frame, the height of the bottom plate can be adjusted accurately by rotating the handle, and the distance between the bottom plate and the pressing plate can be adjusted accurately, which is applicable to flattening corrugated cardboard of various thicknesses. The structure is simple and reliable, and the operation is convenient. Brief Description of the Drawings

[0010] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0011] Figure 2 is a schematic diagram of the structure of the lifting mechanism of the present utility model;

[0012] Figure 3 is a schematic diagram of the bottom plate structure of the present utility model;

[0013] In the figure: 1-frame, 2-bottom plate, 3-pressing plate, 4-cylinder, 5-slide rail, 6-slider, 7-lifting mechanism, 8-scale plate, 9-horizontal axis, 71-screw rod, 72-cross bar, 73-bearing seat, 74-link rod, 75-rotating handwheel. Detailed Embodiment

[0014] As Figures 1 to 3As shown in the figure, a corrugated cardboard flattening device includes a frame 1, a bottom plate 2, a pressing plate 3, a cylinder 4, a slide rail 5, a slider 6, a lifting mechanism 7 and a scale plate 8. The frame 1 has two layers, with legs provided at the bottom. Four vertically downward slide rails 5 are installed between the upper and lower layers. The bottom plate 2 is fixedly provided with sliders 6 corresponding to the slide rails 5. The slide rails 5 and the sliders 6 can ensure the smooth up and down movement of the bottom plate 2 and keep its position horizontal. The cylinder 4 is installed at the top of the frame 1, and the telescopic rod of the cylinder 4 passes through the upper layer of the frame 1 and is connected to the pressing plate 3. The lifting mechanism 7 includes a screw rod 71, a cross bar 72, a bearing seat 73, a connecting rod 74 and a rotating handwheel 75. Threads with opposite helix directions are provided on both sides of the screw rod 71. A threaded hole matching the screw rod 71 is provided in the middle of the cross bar 72. The cross bar 72 is composed of two parts, which are respectively installed on both sides of the screw rod 71 through threads. The two ends of the cross bar 72 are hinged to the connecting rod 74. Two cylindrical horizontal shafts 9 are provided at the bottom of the bottom plate 2. The connecting rod 74 is hinged to the two ends of the horizontal shaft 9 at the bottom of the bottom plate 2. The screw rod 71 is installed on the lower layer of the frame 1 through the bearing seat 73. A rotating handwheel 75 is installed at one end of the screw rod 71 for driving the screw rod 71 to rotate. Since the threads on both sides of the screw rod 71 have opposite helix directions, when the screw rod 71 rotates, the two cross bars 72 move towards the inside or outside simultaneously, driving the bottom plate 2 to move up and down through the connecting rod 74 to adjust the distance between the bottom plate 2 and the pressing plate 3. The scale plate 8 is marked with scales. The scale plate 8 is vertically and fixedly installed on the frame 1, and the upper end of the scale plate 8 corresponds to the lowest position of the pressing plate 3. Since the stroke of the cylinder 4 is fixed and the lowest position of the pressing plate 3 is determined, it is very convenient to adjust the height of the bottom plate 2 to the corresponding scale position according to the thickness of the corrugated cardboard to be flattened, ensuring the accurate distance between the bottom plate 2 and the pressing plate 3 and improving the flattening effect of the corrugated cardboard. A locking device can also be installed to prevent the screw rod 71 from rotating after adjusting the height and fix the position of the bottom plate 2.

[0015] The slide rail 5 is a cylindrical slide rail 5, which can ensure the smooth sliding of the bottom plate 2 during up and down adjustment and keep it horizontal. There are three bearing seats 73, which are respectively located in the middle and at both ends of the screw rod 71 to ensure the stable rotation of the screw rod 71. Sliders 6 corresponding to the slide rail 5 are also provided on both sides of the pressing plate 3 to ensure that the pressing plate 3 and the bottom plate 2 are parallel and the force is evenly distributed when flattening the corrugated cardboard.

[0016] During use, according to the thickness of the corrugated cardboard to be flattened, the height of the bottom plate 2 is adjusted through the lifting mechanism 7. The corrugated cardboard is placed on the bottom plate 2, and the cylinder 4 is started to drive the pressing plate 3 to move downward to flatten the corrugated cardboard. This device can accurately adjust the distance between the bottom plate 2 and the pressing plate 3, has a good flattening effect on the corrugated cardboard, and improves the product qualification rate.

[0017] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A corrugated cardboard flattening device, comprising a frame (1), a bottom plate (2), a pressing plate (3), a cylinder (4), a slide rail (5), a slider (6), a lifting mechanism (7) and a scale plate (8), characterized in that: The frame (1) has two layers, with legs at the bottom, and four downward vertical slide rails (5) are installed between the upper and lower layers. A slider (6) corresponding to the slide rail (5) is fixedly arranged on the bottom plate (2). A cylinder (4) is installed on the top of the frame (1). The telescopic rod of the cylinder (4) passes through the upper layer of the frame (1) and is connected to the pressure plate (3). The lifting mechanism (7) includes a screw rod (71), a cross rod (72), a bearing seat (73), a connecting rod (74) and a rotating hand wheel (75). The screw rod (71) is provided with threads of opposite rotation directions on both sides, and the cross rod (72) is provided with a threaded hole in the middle that matches the screw rod (71). The cross bars (72) are two and are respectively installed on both sides of the screw rod (71) through threads. The two ends of the cross bars (72) are hinged to the connecting rod (74). The bottom of the base plate (2) is provided with two cylindrical cross shafts (9). The connecting rod (74) is hinged to the two ends of the cross shaft (9) at the bottom of the base plate (2). The screw rod (71) is installed on the lower layer of the frame (1) through a bearing seat (73). A rotating hand wheel (75) is installed at one end of the screw rod (71). The scale plate (8) is marked with scales. The scale plate (8) is vertically fixed on the frame (1). The upper end of the scale plate (8) corresponds to the lowest position of the pressure plate (3).

2. The corrugated cardboard flattening device according to claim 1, characterized in that: The slide rail (5) is a cylindrical slide rail (5).

3. The corrugated cardboard flattening device according to claim 1, characterized in that: There are three bearing seats (73), which are respectively located in the middle and at both ends of the screw rod (71).

4. The corrugated cardboard flattening device according to claim 1, characterized in that: Slide blocks (6) corresponding to the slide rails (5) are also provided on both sides of the pressure plate (3).

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