Corrugated board folding device

Abstract

The utility model relates to the technical field of folding devices, and discloses a corrugated board folding device which comprises an inverted-U-shaped fixing frame, a folding base is arranged below the fixing frame, and a plurality of symmetrical folding plates are arranged on the folding base. First driving units used for driving the two symmetrical folding plates to move face to face or back to back are arranged on the multiple side faces of the folding base, a telescopic device is arranged on the inner top wall of the fixing frame, a second driving unit used for driving the telescopic device to move along the fixing frame is arranged on one side of the fixing frame, and a pressing plate is fixedly installed at the telescopic lower end of the telescopic device. An adsorption unit used for adsorbing the corrugated boards is arranged on the pressing plate, two placing plates used for placing the corrugated board stack are arranged on the inner side wall of the fixing frame, and a third driving unit used for driving the two placing plates to move up and down is arranged on the upper portion of the fixing frame. According to the corrugated board folding device, the multiple edges of the corrugated board are folded at a time, and the folding processing efficiency of the corrugated board is improved.

Description

Technical Field

[0001] This utility model relates to the field of folding device technology, specifically a folding device for corrugated cardboard. Background Technology

[0002] Corrugated cardboard, also known as corrugated paperboard, is made of at least one layer of corrugated paper and one layer of linerboard bonded together. It has good elasticity and extensibility. When processing corrugated cardboard, a folding device is needed to fold it into shape.

[0003] To improve the folding efficiency of corrugated cardboard, existing technologies have made numerous improvements to corrugated cardboard folding devices. For example, patent publication number CN219007195U discloses a corrugated cardboard folding device, relating to the field of corrugated paper processing technology. It includes a main body, with a support column fixedly installed at the lower end of the main body, a folding mechanism movably installed at the upper end of the main body, a support rod at the lower end of the folding mechanism, a conveying device at the upper right side of the main body, a smoothing device at the right end of the conveying device, and an electrical box fixedly installed at the lower end of the main body, with a gearbox at the right end of the electrical box. This invention utilizes the smoothness of the roller surface to prevent creases in the corrugated cardboard. A conveyor belt transports the corrugated cardboard to the folding mechanism for folding. Pulleys drive the folding plate. The upper and lower protective layers are made of elastic material, and limiting blocks restrict excessive movement of the folding plate, preventing damage to the corrugated cardboard and unnecessary waste. This improves the working efficiency of the corrugated cardboard folding device and saves manpower.

[0004] The aforementioned patents have significant beneficial effects, but in practical application, they still have the following shortcomings:

[0005] The aforementioned comparative document describes folding corrugated cardboard using a reversible folding plate. However, in reality, many corrugated cardboard pieces require folding at all four edges. Folding the four edges of corrugated cardboard using the aforementioned comparative document requires four repetitions to complete the folding, thus reducing the efficiency of folding corrugated cardboard pieces with multiple edges. Therefore, there is an urgent need in the art to improve the folding device for corrugated cardboard to overcome the shortcomings of the prior art. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a folding device for corrugated cardboard, which improves the efficiency of folding corrugated cardboard by folding multiple edges of the cardboard at once.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a folding device for corrugated cardboard, comprising an inverted U-shaped fixing frame, a folding base below the fixing frame, a plurality of symmetrical folding plates on the folding base, a first driving unit on multiple sides of the folding base for driving two symmetrical folding plates to move towards or away from each other, a telescopic device on the inner top wall of the fixing frame, a second driving unit on one side of the fixing frame for driving the telescopic device to move along the fixing frame, a pressing plate fixedly installed at the lower end of the telescopic device, an adsorption unit for adsorbing corrugated cardboard on the pressing plate, two placement plates for placing stacks of corrugated cardboard on the inner side wall of the fixing frame, and a third driving unit on the upper part of the fixing frame for driving the two placement plates to move up and down.

[0008] Preferably, a conveying device is provided below the fixing frame, and the conveying device is used to convey the folded corrugated cardboard.

[0009] Preferably, the first drive unit includes two first drive motors fixedly installed on adjacent sides of the folding base. A first sliding block is fixedly installed on the lower side of each folding plate. Two first sliding grooves in a cross shape and adapted to the first sliding blocks are opened on the upper surface of the folding base. A bidirectional lead screw with one end fixedly connected to the output end of the corresponding first drive motor is rotatably connected in each of the two first sliding grooves. The bidirectional lead screw passes through the two first sliding blocks and is threadedly connected to the first sliding blocks.

[0010] Preferably, the second drive unit includes a second drive motor fixedly installed on one side of the fixed frame, a second sliding block fixedly installed on the upper end of the telescopic device, a second sliding groove adapted to the second sliding block is opened in the inner top wall of the fixed frame, a first lead screw with one end fixedly connected to the output end of the second drive motor is rotatably connected in the second sliding groove, the first lead screw passes through the second sliding block and is threadedly connected to the second sliding block.

[0011] Preferably, the adsorption unit includes several suction cups disposed on the lower surface of the pressure plate. A connecting pipe that penetrates the pressure plate is fixedly installed on the upper end of the suction cup. The connecting pipe is connected to an external negative pressure device. Several clearance grooves adapted to the suction cups are opened on the lower surface of the pressure plate. A spring is fixedly connected between the inner sidewall of the clearance groove and the upper part of the suction cup.

[0012] Preferably, the third drive unit includes a third drive motor fixedly installed on the upper part of the fixed frame, a third sliding block fixedly installed at one end of each of the two placement plates, a third sliding groove adapted to the third sliding block is opened on the inner side wall of the fixed frame, a second lead screw extending to the upper part of the fixed frame is rotatably connected in the third sliding groove, the second lead screw passes through the third sliding block and is threadedly connected to the third sliding block, a transmission wheel is fixedly installed on the upper side of the second lead screw, a transmission belt for transmission is sleeved between the sides of the two transmission wheels, and the output end of the third drive motor is fixedly connected to the upper end of one of the second lead screws.

[0013] Preferably, each of the folding plates has an arc-shaped corner on its upper side.

[0014] To address the shortcomings of existing technologies, this utility model provides a folding device for corrugated cardboard, overcoming the deficiencies of the prior art. The beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, the lower end of the telescopic device drives the corrugated cardboard adsorbed by the adsorption unit to move downward. The adsorption unit on the lower surface of the pressing plate adsorbs a piece of corrugated cardboard. When the edge of the corrugated cardboard that needs to be folded contacts the arc corner, the edge of the corrugated cardboard folds upward until the pressing plate presses the corrugated cardboard tightly onto the upper surface of the folding base. This completes the simultaneous folding of multiple edges of the corrugated cardboard. By folding multiple edges of the corrugated cardboard at once, the efficiency of folding corrugated cardboard is improved.

[0016] 2. In this utility model, the position of the two symmetrical folding plates can be adjusted by the first driving unit. Both the folding plates and the pressing plates can be replaced, thereby improving the applicability of the folding device for folding corrugated cardboard.

[0017] 3. In this utility model, the folded corrugated cardboard is conveyed to the next processing fixture position, and the efficiency of folding the corrugated cardboard is improved by folding multiple edges of the corrugated cardboard at one time.

[0018] 4. In this utility model, the third drive motor drives the placement plate to move up and down. When there are fewer and fewer corrugated cardboard pieces on the placement plate, the placement plate can be raised to facilitate the adsorption unit to adsorb the corrugated cardboard. At the same time, the extension stroke of the telescopic device is reduced, and the folding efficiency of the corrugated cardboard is improved.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0020] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a partial cross-sectional view of the fixing frame in this utility model.

[0023] Figure 3 This is a partial cross-sectional view of the clamping plate in this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the folding plate in this utility model;

[0025] Figure 5 for Figure 2 Enlarged structural diagram at point A in the middle;

[0026] Figure 6 for Figure 2 Enlarged structural diagram at point B;

[0027] Figure 7 for Figure 2 Enlarged structural diagram at point C;

[0028] Figure 8 for Figure 3 Enlarged structural diagram at point D.

[0029] In the diagram: 1. Fixing frame; 2. Folding base; 3. Folding plate; 4. First drive unit; 5. Telescopic device; 6. Second drive unit; 7. Pressing plate; 8. Adsorption unit; 9. Placement plate; 10. Third drive unit; 11. Conveying device; 12. First drive motor; 13. First sliding block; 14. First sliding groove; 15. Bidirectional lead screw; 16. Second drive motor; 17. Second sliding block; 18. Second sliding groove; 19. First lead screw; 20. Suction cup; 21. Connecting pipe; 22. Relief groove; 23. Spring; 24. Third drive motor; 25. Third sliding block; 26. Third sliding groove; 27. Second lead screw; 28. Transmission wheel; 29. ​​Transmission belt; 30. Arc angle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Please see Figures 1-8A folding device for corrugated cardboard includes an inverted U-shaped fixing frame 1, a folding base 2 below the fixing frame 1, several symmetrical folding plates 3 on the folding base 2, and first driving units 4 on multiple sides of the folding base 2 for driving two symmetrical folding plates 3 to move towards or away from each other. A telescopic device 5 is provided on the inner top wall of the fixing frame 1, and a second driving unit 6 is provided on one side of the fixing frame 1 for driving the telescopic device 5 to move along the fixing frame 1. A pressing plate 7 is fixedly installed at the lower end of the telescopic device 5, and an adsorption unit 8 for adsorbing corrugated cardboard is provided on the pressing plate 7. Two placement plates 9 for placing stacks of corrugated cardboard are provided on the inner side wall of the fixing frame 1. A third driving unit 10 is provided on the upper part of the fixing frame 1 for driving the two placement plates 9 to move up and down. A conveying device 11 is provided below the fixing frame 1 for conveying the folded corrugated cardboard. Each folding plate 3 has an arc angle 30 on its upper side.

[0032] Specifically, when corrugated cardboard needs to be folded, the stacked corrugated cardboard is transferred to two placement plates 9 via a transfer device, and the position of the corrugated cardboard stack is adjusted. The second drive unit 6 is activated to drive the telescopic device 5 to directly above the corrugated cardboard stack. The telescopic device 5 is activated, and the lower end of the telescopic device 5 moves the pressure plate 7 downward. The adsorption unit 8 on the lower surface of the pressure plate 7 adsorbs a piece of corrugated cardboard. The area of ​​the pressure plate 7 is adapted to the middle position of the corrugated cardboard that does not need to be folded. The corrugated cardboard is moved to directly above the folding base 2. The telescopic device 5 is used again to move the corrugated cardboard towards the folding base 2. When the edge of the corrugated cardboard that needs to be folded contacts the arc angle 30, the edge of the corrugated cardboard is folded upward until it is pressed. Plate 7 presses the corrugated cardboard onto the upper surface of the folding base 2, thus completing the simultaneous folding of multiple edges of the corrugated cardboard. After the corrugated cardboard is folded, it is moved to the upper side of the conveyor device 11 by the telescopic device 5 and the second drive unit 6, and the adsorption unit 8 is turned off. The conveyor device 11 is a known conveyor belt that can transport corrugated cardboard. The folded corrugated cardboard is transported to the next processing fixture position. By folding multiple edges of the corrugated cardboard at one time, the efficiency of folding corrugated cardboard is improved. At the same time, the position of the two symmetrical folding plates 3 can be adjusted by the first drive unit 4. Both the folding plates 3 and the pressing plate 7 can be replaced, which improves the applicability of the folding device for folding corrugated cardboard.

[0033] As a technical optimization of this utility model, the first drive unit 4 includes two first drive motors 12 fixedly installed on adjacent sides of the folding base 2. Each folding plate 3 has a first sliding block 13 fixedly installed on its lower side. The upper surface of the folding base 2 has two first sliding grooves 14 that are cross-shaped and adapted to the first sliding blocks 13. Each of the two first sliding grooves 14 is rotatably connected to a bidirectional lead screw 15, one end of which is fixedly connected to the output end of the corresponding first drive motor 12. The bidirectional lead screw 15 passes through the two first sliding blocks 13 and is threadedly connected to the first sliding blocks 13.

[0034] Specifically, when it is necessary to adjust the position of the two symmetrical folding plates 3, the corresponding first drive motor 12 is started. The output end of the first drive motor 12 drives the bidirectional lead screw 15 to rotate. The threads on the side of the bidirectional lead screw 15 are opposite and symmetrical. When the bidirectional lead screw 15 rotates, it drives the two first sliding blocks 13 to move towards or away from each other, thereby achieving the effect of adjusting the position of the two folding plates 3. The two bidirectional lead screws 15 are staggered. The folding plates 3 are installed on the upper side of the first sliding blocks 13 by fasteners. The number and size of the folding plates 3 can be changed according to actual needs.

[0035] As a technical optimization of this utility model, the second drive unit 6 includes a second drive motor 16 fixedly installed on one side of the fixed frame 1, a second sliding block 17 fixedly installed on the upper end of the telescopic device 5, a second sliding groove 18 adapted to the second sliding block 17 is opened in the inner top wall of the fixed frame 1, and a first lead screw 19 with one end fixedly connected to the output end of the second drive motor 16 is rotatably connected in the second sliding groove 18. The first lead screw 19 passes through the second sliding block 17 and is threadedly connected to the second sliding block 17.

[0036] Specifically, when it is necessary to adjust the position of the telescopic device 5, the second drive motor 16 is started. The output end of the second drive motor 16 drives the first lead screw 19 to rotate. When the first lead screw 19 rotates, it drives the second sliding block 17 to slide in the second sliding groove 18. The second sliding block 17 drives the telescopic device 5 to move along the second sliding groove 18.

[0037] As a technical optimization of this utility model, the adsorption unit 8 includes a plurality of suction cups 20 disposed on the lower surface of the pressing plate 7. A connecting pipe 21 that penetrates the pressing plate 7 is fixedly installed on the upper end of the suction cup 20. The connecting pipe 21 is connected to an external negative pressure device. A plurality of clearance grooves 22 adapted to the suction cups 20 are opened on the lower surface of the pressing plate 7. A spring 23 is fixedly connected between the inner side wall of the clearance groove 22 and the upper part of the suction cup 20.

[0038] Specifically, the connecting pipe 21 is connected to an external negative pressure device. When the suction cup 20 contacts the upper surface of the corrugated cardboard, the negative pressure device is activated to create a negative pressure inside the suction cup 20 to adsorb the corrugated cardboard. When the pressing plate 7 drives the corrugated cardboard to contact the upper surface of the folding base 2, the pressing plate 7 continues to press down. At this time, the suction cup 20 is squeezed into the relief groove 22, and the spring 23 is compressed. The pressing plate 7 can completely press the corrugated cardboard. When the pressing plate 7 moves up, the tension of the spring 23 pushes the suction cup 20 out again, ensuring the pressure applied by the pressing plate 7 to the corrugated cardboard, thereby ensuring the folding effect of the corrugated cardboard, while not affecting the adsorption state of the corrugated cardboard.

[0039] As a technical optimization of this utility model, the third drive unit 10 includes a third drive motor 24 fixedly installed on the upper part of the fixed frame 1, and a third sliding block 25 fixedly installed on one end of each of the two placement plates 9. A third sliding groove 26 adapted to the third sliding block 25 is opened on the inner side wall of the fixed frame 1. A second lead screw 27 extending to the upper part of the fixed frame 1 is rotatably connected in the third sliding groove 26. The second lead screw 27 passes through the third sliding block 25 and is threadedly connected to the third sliding block 25. A transmission wheel 28 is fixedly installed on the upper side of the second lead screw 27. A transmission belt 29 for transmission is sleeved between the sides of the two transmission wheels 28. The output end of the third drive motor 24 is fixedly connected to the upper end of one of the second lead screws 27.

[0040] Specifically, the third drive motor 24 is started. The output end of the third drive motor 24 drives one of the second lead screws 27 and the transmission wheel 28 to rotate. The transmission wheel 28 drives the other transmission wheel 28 and the second lead screw 27 to rotate through the transmission belt 29. When the second lead screw 27 rotates, it drives the third sliding block 25 to slide in the third sliding groove 26, thereby driving the placement plate 9 to move up and down. When there is less and less corrugated cardboard on the placement plate 9, the placement plate 9 can be raised to facilitate the adsorption unit 8 to adsorb the corrugated cardboard. At the same time, the extension stroke of the telescopic device 5 is reduced, and the folding efficiency of the corrugated cardboard is improved.

[0041] All of the electrical products mentioned above can be purchased from the market. They are mature technologies and have been fully disclosed, so they will not be repeated in the instruction manual. All of the electrical products mentioned above are equipped with power cords, and they are electrically connected to the external main controller and 220V phase voltage (or 380V line voltage) through the power cords. The main controller can be a conventional known device such as a computer that plays a control role.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A folding device for corrugated cardboard, comprising an inverted U-shaped fixing frame (1), characterized in that, The fixed frame (1) is provided with a folding base (2) below it. The folding base (2) is provided with several symmetrical folding plates (3). The folding base (2) is provided with a first driving unit (4) on multiple sides for driving two symmetrical folding plates (3) to move towards each other or away from each other. The inner top wall of the fixed frame (1) is provided with a telescopic device (5). The fixed frame (1) is provided with a second driving unit (6) on one side for driving the telescopic device (5) to move along the fixed frame (1). The lower end of the telescopic device (5) is fixedly installed with a pressing plate (7). The pressing plate (7) is provided with an adsorption unit (8) for adsorbing corrugated cardboard. The inner side wall of the fixed frame (1) is provided with two placement plates (9) for placing stacks of corrugated cardboard. The upper part of the fixed frame (1) is provided with a third driving unit (10) for driving the two placement plates (9) to move up and down.

2. The folding device for corrugated cardboard according to claim 1, characterized in that, The fixed frame (1) is provided with a conveying device (11) below it, which is used to convey the folded corrugated cardboard.

3. The folding device for corrugated cardboard according to claim 1, characterized in that, The first drive unit (4) includes two first drive motors (12) fixedly installed on adjacent sides of the folding base (2). Each folding plate (3) has a first sliding block (13) fixedly installed on its lower side. The upper surface of the folding base (2) has two first sliding grooves (14) that are cross-shaped and adapted to the first sliding blocks (13). Each of the two first sliding grooves (14) has a bidirectional lead screw (15) with one end fixedly connected to the output end of the corresponding first drive motor (12). The bidirectional lead screw (15) passes through the two first sliding blocks (13) and is threadedly connected to the first sliding blocks (13).

4. The folding device for corrugated cardboard according to claim 1, characterized in that, The second drive unit (6) includes a second drive motor (16) fixedly installed on one side of the fixed frame (1). A second sliding block (17) is fixedly installed on the upper end of the telescopic device (5). A second sliding groove (18) adapted to the second sliding block (17) is opened in the inner top wall of the fixed frame (1). A first lead screw (19) with one end fixedly connected to the output end of the second drive motor (16) is rotatably connected in the second sliding groove (18). The first lead screw (19) passes through the second sliding block (17) and is threadedly connected to the second sliding block (17).

5. A folding device for corrugated cardboard according to claim 1, characterized in that, The adsorption unit (8) includes several suction cups (20) disposed on the lower surface of the pressure plate (7). A connecting pipe (21) penetrating the pressure plate (7) is fixedly installed on the upper end of the suction cup (20). The connecting pipe (21) is connected to an external negative pressure device. Several clearance grooves (22) adapted to the suction cups (20) are opened on the lower surface of the pressure plate (7). A spring (23) is fixedly connected between the inner side wall of the clearance groove (22) and the upper part of the suction cup (20).

6. A folding device for corrugated cardboard according to claim 1, characterized in that, The third drive unit (10) includes a third drive motor (24) fixedly installed on the upper part of the fixed frame (1). A third sliding block (25) is fixedly installed on one end of each of the two placement plates (9). A third sliding groove (26) adapted to the third sliding block (25) is opened on the inner side wall of the fixed frame (1). A second lead screw (27) extending to the upper part of the fixed frame (1) is rotatably connected in the third sliding groove (26). The second lead screw (27) passes through the third sliding block (25) and is threadedly connected to the third sliding block (25). A transmission wheel (28) is fixedly installed on the upper side of the second lead screw (27). A transmission belt (29) for transmission is sleeved between the sides of the two transmission wheels (28). The output end of the third drive motor (24) is fixedly connected to the upper end of one of the second lead screws (27).

7. A folding device for corrugated cardboard according to claim 1, characterized in that, Each of the folding plates (3) has an arc-shaped corner (30) on its upper side.

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