A calender for white card

Abstract

The utility model discloses a kind of white cardboard calendering devices, including conveying frame, the inside both sides of conveying frame are rotatably connected with conveying roller, the outside transmission connection of two conveying rollers has conveying belt, the first motor of driving conveying roller rotation is fixedly installed on conveying frame, the inside rotatably connected with multiple support rollers of conveying frame, the top of multiple support rollers is contacted with conveying belt, fixedly connected with fixed frame on conveying frame, U-shaped frame is slidably arranged in the inside of fixed frame, the position corresponding with multiple support rollers on U-shaped frame is rotatably connected with calendering roller, by multiple calendering rollers, white cardboard is conveniently calendered multiple times, avoid multiple repeated calendering, reduce production procedure and time cost, avoid multiple repeated rolling and lead to white cardboard deformation, wrinkle and other problems.

Description

Technical Field

[0001] This utility model relates to the field of white cardboard processing technology, and more specifically, it relates to a white cardboard calendering device. Background Technology

[0002] White cardboard, a common type of packaging and printing paper, directly affects the subsequent printing results and product appearance due to its surface quality. Calendering is one of the key processes in the production of white cardboard. By pressing the paper with a calendering device, unevenness on the paper surface can be eliminated, improving the smoothness and gloss of the paper.

[0003] Currently, most existing white cardboard calendering devices on the market use a single set of calendering rollers, meaning that the white cardboard can only undergo calendering once during the calendering process. This structure has significant shortcomings: firstly, a single calendering is insufficient to achieve the desired surface quality, especially for thicker white cardboard or white cardboard with poor surface flatness, often requiring multiple calendering cycles. This not only increases production steps and time costs but may also cause deformation and wrinkles in the white cardboard due to repeated pressing.

[0004] In addition, traditional calendering devices lack effective positioning and guiding mechanisms during the feeding of white cardboard, which can easily cause the white cardboard to deviate or run off course, resulting in uneven calendering and reduced calendering effect. Utility Model Content

[0005] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a white cardboard calendering device to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a white cardboard calendering device, comprising a conveyor frame, with conveyor rollers rotatably connected to both sides of the conveyor frame, and a conveyor belt externally connected to the two conveyor rollers. A first motor for driving the conveyor rollers to rotate is fixedly installed on the conveyor frame. Multiple support rollers are rotatably connected inside the conveyor frame, with the tops of the multiple support rollers contacting the conveyor belt. A fixed frame is fixedly connected to the conveyor frame, and a U-shaped frame is longitudinally slidably arranged inside the fixed frame. Calendering rollers are rotatably connected to the U-shaped frame at positions corresponding to the multiple support rollers. The multiple calendering rollers facilitate multiple calendering processes on the white cardboard, avoiding repeated calendering, reducing production steps and time costs, and preventing deformation and wrinkles in the white cardboard caused by repeated crushing.

[0007] The present invention is further configured such that a plurality of first hydraulic cylinders are fixedly installed on the fixed frame, and the telescopic ends of the plurality of first hydraulic cylinders are fixedly connected to the top of the U-shaped frame, so as to facilitate the up and down movement of the U-shaped frame.

[0008] The present invention is further configured such that a first scale line is provided on the side end of the fixed frame, which facilitates the adjustment of the height of the multiple calendering rollers and the adjustment of the distance between the multiple calendering rollers and the conveyor belt.

[0009] The present invention is further configured such that both ends of the U-shaped frame are fixedly connected to fixed plates, and two second hydraulic cylinders are fixedly installed on each of the two fixed plates. Lifting plates are fixedly connected to the telescopic ends of the two second hydraulic cylinders. Adjustment grooves are provided at the bottom ends of the two lifting plates. Two limiting plates are slidably arranged inside the U-shaped frame. Adjustment seats are fixedly connected to the top ends of the two limiting plates. The four adjustment seats are respectively slidably engaged with the interior of the two adjustment grooves. A bidirectional screw is rotatably connected inside one of the adjustment grooves. The bidirectional screw is threadedly connected to the two corresponding adjustment seats. A second motor that drives the bidirectional screw to rotate is fixedly installed on the lifting plate, which facilitates the limiting function of the white cardboard.

[0010] The present invention is further configured such that U-shaped grooves are provided at the positions corresponding to the multiple calendering rollers on the two limiting plates, and the multiple calendering rollers are respectively located inside the multiple U-shaped grooves, which facilitates the adjustment of the height of the two limiting plates.

[0011] The present invention is further configured such that the two adjustment seats inside the same adjustment groove are symmetrically arranged about the center face of the bidirectional screw, which facilitates the adjustment of the position of the two adjustment seats.

[0012] The present invention is further configured such that a support plate is fixedly connected inside each of the two adjustment slots, and the two support plates are slidably engaged with the four adjustment seats respectively, so as to ensure that the adjustment seats slide stably inside the adjustment slots.

[0013] The present invention is further configured such that a second scale line is provided on the side end of the lifting plate corresponding to the second motor, which facilitates accurate adjustment of the distance between the two limiting plates.

[0014] (III) Beneficial Effects Compared with the prior art, this utility model provides a white cardboard calendering device, which has the following beneficial effects: 1. Multiple calendering rollers facilitate continuous calendering of white cardboard, enabling the surface of the white cardboard to achieve ideal calendering quality. This avoids repeated calendering, reducing production processes and time costs, and preventing problems such as deformation and wrinkles caused by repeated rolling.

[0015] 2. Multiple first hydraulic cylinders drive the U-shaped frame and multiple calendering rollers to move up and down, which facilitates the adjustment of the height of the multiple calendering rollers, the adjustment of the distance between the multiple calendering rollers and the conveyor belt according to the thickness of the white cardboard, and the calendering process for white cardboard of different thicknesses. The scale value on the bottom end of the U-shaped frame located on the first scale line facilitates the accurate adjustment of the distance between the bottom end of the multiple calendering rollers and the conveyor belt.

[0016] 3. The second motor drives the bidirectional screw to rotate. The rotation of the bidirectional screw causes the two corresponding adjusting seats to slide in opposite directions inside the adjusting groove. The two adjusting seats drive the two limiting plates to move, so that the position of the two limiting plates can be adjusted according to the width of the white cardboard to be calendered. Multiple second hydraulic cylinders drive the two lifting plates and the two limiting plates to move up and down, so that the distance between the bottom of the limiting plate and the conveyor belt is less than the thickness of the white cardboard. The two limiting plates limit the white cardboard and prevent it from deviating or running off-center, thus avoiding uneven calendering and reducing the calendering effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front structure of a white cardboard calendering device according to the present invention; Figure 2 This is a structural diagram showing the combination of the fixed frame, multiple first hydraulic cylinders, U-shaped frame, multiple calendering rollers, two lifting plates, and two limiting plates in this utility model. Figure 3 This is a schematic diagram of the structural cooperation of two lifting plates, two limiting plates, a second motor, and a bidirectional screw in this utility model. Figure 4 This is a structural diagram showing the combination of two limiting plates and multiple adjusting seats in this utility model; Figure 5 This is a schematic diagram of the structure of the conveyor frame, two conveyor rollers, a first motor, and multiple support rollers in this utility model.

[0018] In the diagram: 1. Conveyor frame; 2. Conveyor roller; 3. Conveyor belt; 4. First motor; 5. Support roller; 6. Fixed frame; 7. U-shaped frame; 8. Calendering roller; 9. First hydraulic cylinder; 10. First scale line; 11. Fixed plate; 12. Second hydraulic cylinder; 13. Lifting plate; 14. Adjusting groove; 15. Limiting plate; 16. Adjusting seat; 17. Bidirectional screw; 18. Second motor; 19. U-shaped groove; 20. Support plate; 21. Second scale line. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0022] Please see Figures 1-5 A white cardboard calendering device includes a conveyor frame 1, with conveyor rollers 2 rotatably connected to both sides inside the conveyor frame 1. A conveyor belt 3 is externally connected to the two conveyor rollers 2. A first motor 4 for driving the conveyor rollers 2 to rotate is fixedly installed on the conveyor frame 1. Multiple support rollers 5 are rotatably connected inside the conveyor frame 1, with the top ends of the multiple support rollers 5 contacting the conveyor belt 3. A fixed frame 6 is fixedly connected to the conveyor frame 1. A U-shaped frame 7 is longitudinally slidably arranged inside the fixed frame 6. Calendering rollers 8 are rotatably connected to the U-shaped frame 7 at positions corresponding to the multiple support rollers 5. The calendering rollers 8 are prior art well known to those skilled in the art. The structure of the calendering rollers 8 and the principle of calendering white cardboard are not described in detail here.

[0023] Specifically, multiple calendering rollers 8 facilitate continuous calendering of the white cardboard, enabling the white cardboard surface to achieve ideal surface quality, avoiding repeated calendering, reducing production processes and time costs, and preventing problems such as deformation and wrinkles caused by repeated rolling.

[0024] Please see Figure 1 and Figure 2 Multiple first hydraulic cylinders 9 are fixedly installed on the fixed frame 6. The telescopic ends of the multiple first hydraulic cylinders 9 are fixedly connected to the top of the U-shaped frame 7, which facilitates the up and down movement of the U-shaped frame 7. The side end of the fixed frame 6 is provided with a first scale line 10, which facilitates the adjustment of the height of the multiple calendering rollers 8 and the adjustment of the distance between the multiple calendering rollers 8 and the conveyor belt 3.

[0025] Specifically, multiple first hydraulic cylinders 9 drive the U-shaped frame 7 and multiple calendering rollers 8 to move up and down, which facilitates the adjustment of the height of the multiple calendering rollers 8, the adjustment of the distance between the multiple calendering rollers 8 and the conveyor belt 3 according to the thickness of the white cardboard, and the calendering process for white cardboard of different thicknesses. The scale value on the bottom surface of the U-shaped frame 7 located on the first scale line 10 facilitates the accurate adjustment of the distance between the bottom of the multiple calendering rollers 8 and the conveyor belt 3.

[0026] Please see Figures 1-4 Both ends of the U-shaped frame 7 are fixedly connected to fixed plates 11. Two second hydraulic cylinders 12 are fixedly installed on each of the two fixed plates 11. Lifting plates 13 are fixedly connected to the telescopic ends of the two second hydraulic cylinders 12. Adjustment grooves 14 are provided at the bottom ends of the two lifting plates 13. Two limiting plates 15 are slidably installed inside the U-shaped frame 7. The limiting plates 15 are rigid plates, preventing bending during adjustment. U-shaped grooves 19 are provided on the two limiting plates 15 at positions corresponding to the multiple calendering rollers 8. The multiple calendering rollers 8 are located inside the multiple U-shaped grooves 19, facilitating height adjustment of the two limiting plates 15. Adjustment seats 16 are fixedly connected to the top ends of the two limiting plates 15. The four adjustment seats 16 slide smoothly within the two adjustment grooves 14. A suitable amount of lubricating oil can be applied to the inside of the adjustment groove 14. A bidirectional screw 17 is rotatably connected inside one adjustment groove 14. The bidirectional screw 17 is threadedly connected to two corresponding adjustment seats 16. The two adjustment seats 16 inside the same adjustment groove 14 are symmetrically arranged about the center face of the bidirectional screw 17, which facilitates the adjustment of the position of the two adjustment seats 16. A second motor 18 that drives the bidirectional screw 17 to rotate is fixedly installed on the lifting plate 13, which facilitates the limiting function of the white cardboard. A support plate 20 is fixedly connected inside each of the two adjustment grooves 14. The two support plates 20 are slidably engaged with the four adjustment seats 16 respectively, ensuring that the adjustment seats 16 slide stably inside the adjustment groove 14. A second scale line 21 is provided on the side end of the lifting plate 13 corresponding to the second motor 18, which facilitates the accurate adjustment of the distance between the two limiting plates 15.

[0027] Specifically, the second motor 18 drives the bidirectional screw 17 to rotate. The rotation of the bidirectional screw 17 causes the two corresponding adjusting seats 16 to slide in opposite directions inside the adjusting groove 14. The two adjusting seats 16 respectively drive the two limiting plates 15 to move, so that the position of the two limiting plates 15 can be adjusted according to the width of the white cardboard to be calendered. Multiple second hydraulic cylinders 12 drive the two lifting plates 13 and the two limiting plates 15 to move up and down, so that the distance between the bottom end of the limiting plate 15 and the conveyor belt 3 is less than the thickness of the white cardboard. The two limiting plates 15 play a limiting role for the white cardboard, preventing the white cardboard from easily deviating or running off-center, and avoiding uneven calendering that reduces the calendering effect.

[0028] In summary, when using the overall equipment: After adjusting the height of the multiple calendering rollers 8 and the spacing between the two limiting plates 15 according to the width and thickness of the white cardboard, the white cardboard to be calendered is placed on the conveyor belt 3 between the two limiting plates 15. The first motor 4 drives the conveyor roller 2 and the conveyor belt 3 to rotate, and the conveyor belt 3 moves the white cardboard. When the white cardboard moves to the bottom of the calendering rollers 8, the multiple calendering rollers 8 calender the white cardboard.

[0029] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A white cardboard calendering device, comprising a conveyor frame (1), characterized in that: The conveyor frame (1) has conveyor rollers (2) rotatably connected to both sides inside. The two conveyor rollers (2) are connected to a conveyor belt (3) externally. The conveyor frame (1) is fixedly installed with a first motor (4) that drives the conveyor rollers (2) to rotate. The conveyor frame (1) has multiple support rollers (5) rotatably connected inside. The top of the multiple support rollers (5) contacts the conveyor belt (3). The conveyor frame (1) has a fixed frame (6) fixedly connected. The fixed frame (6) has a U-shaped frame (7) slidably arranged longitudinally inside. The U-shaped frame (7) has rotatably connected with calendering rollers (8) at positions corresponding to the multiple support rollers (5).

2. The white cardboard calendering device according to claim 1, characterized in that: Multiple first hydraulic cylinders (9) are fixedly installed on the fixed frame (6), and the telescopic ends of the multiple first hydraulic cylinders (9) are fixedly connected to the top of the U-shaped frame (7).

3. The white cardboard calendering device according to claim 2, characterized in that: The side end of the fixing frame (6) is provided with a first scale line (10).

4. The white cardboard calendering device according to claim 1, characterized in that: Both ends of the U-shaped frame (7) are fixedly connected to fixed plates (11). Two second hydraulic cylinders (12) are fixedly installed on the two fixed plates (11). The telescopic ends of the two second hydraulic cylinders (12) are fixedly connected to lifting plates (13). The bottom ends of the two lifting plates (13) are provided with adjustment grooves (14). Two limit plates (15) are slidably arranged inside the U-shaped frame (7). The top ends of the two limit plates (15) are fixedly connected to adjustment seats (16). The four adjustment seats (16) are respectively slidably engaged with the interior of the two adjustment grooves (14). A bidirectional screw (17) is rotatably connected inside one of the adjustment grooves (14). The bidirectional screw (17) is threadedly connected to the corresponding two adjustment seats (16). A second motor (18) that drives the bidirectional screw (17) to rotate is fixedly installed on the lifting plate (13).

5. The white cardboard calendering device according to claim 4, characterized in that: U-shaped grooves (19) are provided on both of the limiting plates (15) at positions corresponding to the multiple calendering rollers (8).

6. The white cardboard calendering device according to claim 5, characterized in that: The two adjustment seats (16) inside the same adjustment groove (14) are symmetrically arranged about the center face of the bidirectional screw (17).

7. The white cardboard calendering device according to claim 6, characterized in that: The two adjustment slots (14) are each fixedly connected to a support plate (20), and the two support plates (20) are slidably engaged with the four adjustment seats (16).

8. The white cardboard calendering apparatus according to claim 7, characterized in that: A second scale line (21) is provided on the side end of the lifting plate (13) corresponding to the second motor (18).

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