Movable water jet cutting device used on corrugated board production line

Abstract

The utility model relates to the field of water cutting on corrugated paper, in particular to a movable water jet cutting device used on a corrugated paper board production line, which comprises a paper board passing assembly and a water jet cutting assembly suspended on the paper board passing assembly, and the water jet cutting assembly is used for cutting corrugated paper boards continuously fed on the paper board passing assembly without stopping. The water jet cutter cutting assembly comprises more than two water jet cutters and a conveying belt for simultaneously providing a closed-loop path for the water jet cutters, so that the two water jet cutters are switched back and forth between a cutting state and a resetting state, and the closed-loop path extends out of a corrugated board; the utility model relates to the application of a water jet cutter in the corrugated paper industry, which not only can restrain the fluttering of dust, but also can thoroughly solve the cost problem caused by the abrasion of the blade and the replacement of the blade.

Description

Technical Field

[0001] This utility model relates to the field of waterjet cutting on corrugated paper, and more particularly to a movable waterjet cutting device for use in a corrugated cardboard production line. Background Technology

[0002] Corrugated cardboard cutting equipment is an automated device used to cut corrugated cardboard into different specifications.

[0003] Currently, the cutting process of corrugated cardboard can be divided into three methods: longitudinal cutting, multi-functional cutting, and cross cutting. Longitudinal cutting, multi-functional cutting, and cross cutting all use traditional blades to achieve partial or complete cutting of corrugated cardboard.

[0004] Using traditional blades to cut corrugated cardboard can cause deformation at the cut edges. Additionally, the dust generated by the friction between the blade and the cardboard can drift throughout the workshop, affecting the working environment for workers. Furthermore, blades wear out, and replacement costs are high, including but not limited to the precise adjustments required after installation, which are time-consuming and inefficient. Utility Model Content

[0005] To solve the above problems, this utility model provides a movable water jet cutting device for use on corrugated cardboard production lines. It uses a water jet instead of a traditional metal blade. The water jet can overcome the problem of deformation of the cut. The water jet utilizes the principle of high-speed jet to instantly wash away dust and prevent dust from drifting in all directions.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a movable water jet cutting device for use in a corrugated cardboard production line, characterized in that it includes a cardboard feed assembly and a water jet cutting assembly suspended on the cardboard feed assembly. The water jet cutting assembly is used to cut the continuously fed corrugated cardboard on the cardboard feed assembly without stopping the machine. The water jet cutting assembly includes two or more water jets and a conveyor belt that simultaneously provides a closed-loop path for the water jets, so that the two water jets switch back and forth between cutting and resetting states. The closed-loop path extends to the outside of the corrugated cardboard.

[0007] The beneficial effects of this utility model are:

[0008] This invention relates to the application of water jet cutting in the corrugated paper industry. The purpose of this design is not only to suppress dust dispersion but also to completely solve the cost problems associated with blade wear and replacement. The water jet cutting assembly includes at least two water jets that can alternately operate, ensuring that the other water jet reaches the starting point of the cut. This timely response cutting method is used to handle continuously fed corrugated cardboard, achieving the goal of cutting corrugated cardboard without stopping the machine. The closed-loop path provided by the conveyor belt has a portion outside the corrugated cardboard, designed to accommodate the time required for at least two water jets to reach a cutting speed from zero. The closed-loop path includes two paths: water jet cutting and return. No water is sprayed from the return water jet. When the water jet is outside the corrugated cardboard, the water flow speed in the water jet accelerates from zero. Therefore, this design provides a buffer time for the water jet formation, which is a fundamental and necessary condition for the construction of this solution.

[0009] In this embodiment, the cardboard assembly provides a moving speed that can deliver at least 300 meters of corrugated cardboard per minute, or at least 5 meters per second. Therefore, the corrugated cardboard is cut at an extremely high speed throughout the process.

[0010] The water pressure generated by the water jet is between 350 MPa and 420 MPa.

[0011] At the request of some customers, the paperboard assembly can deliver at least 350 or 400 meters of corrugated cardboard per minute, or even longer. In this case, a single waterjet cutting assembly will face the problem of insufficient pressure, which will result in the corrugated cardboard not being completely cut. By setting up multiple waterjet cutting assemblies (four in this embodiment) and using them alternately, it is ensured that the water pressure of the waterjet has enough time to rise to the range of 350 MPa-420 MPa to cut the corrugated cardboard.

[0012] Because the paper feeder assembly feeds paper continuously throughout the cutting process, the conveyor belt is inclined relative to the paper feeding direction. In other words, the water jet has a relatively inclined back-and-forth trajectory on the horizontal plane above the corrugated cardboard. At this time, the speed of the conveyor belt must be higher than the speed provided by the paper feeder assembly to the corrugated cardboard, so that a relatively vertical edge can be cut on the corrugated cardboard.

[0013] The aforementioned cardboard conveying assembly includes a frame and a drive source (not shown in the figure), which pushes the corrugated cardboard to move on the frame under the action of the drive source.

[0014] The frame is also equipped with a water collection tank, which corresponds to the path outside the corrugated cardboard, and is used to store the water sprayed during acceleration and the water retained when the water jet is turned off.

[0015] A water tank is installed on the frame, and the water pump in the water tank is connected to the water jet through a pipe.

[0016] The frame is also equipped with a servo motor and a driven wheel assembly. The servo motor shaft is fitted with a drive wheel, and the conveyor belt is fitted onto the driven wheel in the drive wheel and driven wheel assembly, allowing the conveyor belt to move above the corrugated cardboard. The servo motor operates in both forward and reverse directions throughout the cutting process. For example, on opposite sides of the corrugated cardboard, one side is the preparation area and the other is the stop area. The water jet only sprays high-pressure water when it moves from the preparation area to the stop area to switch the corrugated cardboard. In the initial position, there is the maximum distance between the two water jets. After completing the first round of cutting, the position of the water jet must be in at least one stop area and the preparation area. For example, when the servo motor rotates forward, the first water jet moves from the preparation area to the stop area, and at the same time, the second water jet moves from the stop area to the preparation area. After the servo motor rotates in reverse, the water jet moves back and forth between the two areas.

[0017] The frame is equipped with a slide rail, and the water jet is equipped with a slider that is slidably connected to the slide rail. Under the action of the slide rail and the slider, the stability of the water jet movement can be improved, and it also plays a guiding role.

[0018] Specifically, it also includes a mounting base and a pressure block. The mounting base includes a connecting part and a mounting part. The water jet is set on the mounting part, the connecting part is located on the inner surface of the conveyor belt, and the pressure block is located on the surface of the conveyor belt. The pressure block and the connecting part are connected and fixed by clamping the conveyor belt. The water jet is set on the mounting part. This structure is simple to assemble and highly practical. In addition, the slider is connected to the lower end of the mounting part.

[0019] A waterjet cutter consists of multiple nozzles, with the spray direction between the nozzles intersecting the corrugated cardboard. This design superimposes cutting energy, significantly improving penetration.

[0020] In some embodiments, the distance between the spray nozzle and the corrugated cardboard is 60mm-350mm, and the thickness of the corrugated cardboard is between 80mm-350mm.

[0021] A water jet cutting method for corrugated cardboard, characterized by comprising the following steps:

[0022] S1, the first water jet above the water tank is injected to ensure a water pressure of 350mpa-420mpa during cutting;

[0023] S2, working through the cardboard assembly, drives the corrugated cardboard to move below the water jet's movement trajectory;

[0024] S3, the servo motor drives the first water jet to move from the preparation area to the stop area via the conveyor belt, and cuts the corrugated cardboard when it passes through it. At the same time, the second water jet moves from the stop area to the preparation area.

[0025] S4, after the first water jet reaches the stop zone, the second water jet begins to increase the water pressure on the water receiving tank;

[0026] S5, the servo motor reverses and drives the second water jet to move from the preparation area to the stop area. The second water jet makes a new cut on the corrugated cardboard. At the same time, the first water jet stops spraying water and moves to the preparation area.

[0027] S6, with the servo motor working continuously, the first and second water jets alternate positions in the preparation and cut-off zones to cut the corrugated cardboard.

[0028] Furthermore, under the control of the host computer, S7 controls another set of waterjet cutting components to continue cutting the corrugated cardboard after any set of waterjet cutting components finishes cutting.

[0029] This water jet cutting method for corrugated cardboard can adapt to the high-speed cutting requirements of corrugated cardboard of different sizes, with high cutting quality, reduced dust generation, and optimized power consumption. Attached Figure Description

[0030] Figure 1 This is a perspective view of the present invention.

[0031] Figure 2 yes Figure 1 Enlarged diagram of point A.

[0032] Figure 3 This is an assembly diagram of the water tank and the frame.

[0033] Figure 4 This is an assembly drawing of the slider and slide rail from another viewpoint. Detailed Implementation

[0034] Please see Figure 1-4 As shown, a movable water jet cutting device for use on a corrugated cardboard production line includes a cardboard feed assembly and a water jet cutting assembly 2 suspended on the cardboard feed assembly. The water jet cutting assembly 2 is used to cut the continuously fed corrugated cardboard on the cardboard feed assembly without stopping the machine. The water jet cutting assembly 2 includes two or more water jets 3 and a conveyor belt 41 that simultaneously provides a closed-loop path for the water jets 3, so that the two water jets 3 switch back and forth between cutting and resetting states. The closed-loop path extends to the outside of the corrugated cardboard.

[0035] The beneficial effects of this utility model are:

[0036] This invention relates to the application of water jet 3 in the corrugated paper industry. The purpose of this design is not only to suppress dust movement but also to completely solve the cost problems associated with blade wear and replacement. The water jet cutting assembly 2 comprises at least two water jets 3 that can be selected to work alternately, ensuring that the other water jet 3 can reach the starting point of the cut. This timely response cutting method is used to handle continuously fed corrugated cardboard, achieving the goal of cutting corrugated cardboard without stopping the machine. The closed-loop path provided by the conveyor belt has a portion outside the corrugated cardboard, designed to account for the time required for at least two water jets 3 to reach a water velocity suitable for cutting from zero. The closed-loop path includes two paths: the water jet 3 cutting path and the return path. No water is sprayed from the water jet 3 during the return path. When the water jet 3 is outside the corrugated cardboard, the water flow velocity in the water jet 3 accelerates from zero. Therefore, the purpose of this design is to provide a buffer time for the formation of the water jet 3, which is a fundamental and necessary condition for the construction of this solution.

[0037] In this embodiment, the cardboard assembly provides a moving speed that can deliver at least 300 meters of corrugated cardboard per minute, or at least 5 meters per second. Therefore, the corrugated cardboard is cut at an extremely high speed throughout the process.

[0038] The water pressure generated by the water jet 3 is between 350 MPa and 420 MPa.

[0039] At the request of some customers, the cardboard assembly can deliver at least 350 or 400 meters of corrugated cardboard per minute at a speed that allows it to travel at a speed that is not high enough. In this case, a single waterjet cutting assembly 2 will face the problem of insufficient pressure, which will result in the corrugated cardboard not being completely cut. By setting up multiple sets of waterjet cutting assemblies 2 (four sets in this embodiment) and using them alternately, it is ensured that the water pressure of the waterjet 3 has enough time to rise to the range of 350 MPa-420 MPa to cut the corrugated cardboard.

[0040] Since the paper feeder assembly feeds paper continuously throughout the cutting process, the conveyor belt is inclined relative to the paper feeding direction. In other words, the water jet 3 has a relatively inclined back-and-forth trajectory on the horizontal plane above the corrugated cardboard. At this time, the speed of the conveyor belt must be higher than the speed provided by the paper feeder assembly to the corrugated cardboard, so that a relatively vertical edge can be cut on the corrugated cardboard.

[0041] The aforementioned corrugated cardboard assembly includes a frame 100, a feed plate 101, and a drive source (not shown in the figure). Under the action of the drive source, the corrugated cardboard is pushed to move on the frame 100.

[0042] The frame 100 is also equipped with a water receiving tank 102, which corresponds to the path outside the corrugated cardboard and is used to store the water sprayed during acceleration and the water retained when the water jet 3 is turned off.

[0043] Furthermore, the water receiving trough 102 is integral and is tilted on the frame 100. The water receiving trough 102 is located below the water jet cutting assembly 2, and the entire water receiving trough 102 corresponds to the reciprocating trajectory of the water jet cutting assembly 2.

[0044] A water tank 103 is provided on the frame 100, and the water pump in the water tank 103 is connected to the water jet 3 through a pipe.

[0045] The frame 100 is also equipped with a motor housing 42, a servo motor, and a driven wheel assembly 43. The servo motor is housed in the motor housing 42, and a drive wheel is mounted on the motor shaft of the servo motor. The conveyor belt 41 is mounted on the driven wheel in the drive wheel and driven wheel assembly 43, allowing the conveyor belt 41 to move above the corrugated cardboard. The servo motor operates in both forward and reverse rotation during the entire cutting process. For example, on opposite sides of the corrugated cardboard, one side is the preparation area and the other is the stop area. The water jet 3 sprays high-pressure water when it moves from the preparation area to the stop area to switch the corrugated cardboard. In the initial position, the two water jets 3 have the maximum distance between them. After completing the first round of cutting, the position of the water jet 3 must be in at least one stop area and one preparation area. For example, when the servo motor rotates forward, the first water jet moves from the preparation area to the stop area, and at the same time, the second water jet moves from the stop area to the preparation area. After the servo motor rotates in reverse, the water jet 3 moves back and forth between the two areas.

[0046] The frame 100 is equipped with a slide rail 100-a, and the water jet 3 is equipped with a slider 47 that is slidably connected to the slide rail 100-a. Under the action of the slide rail 100-a and the slider 47, the stability of the water jet 3 movement can be improved, and it also plays a guiding role.

[0047] Specifically, it also includes a mounting base and a pressure block 44. The mounting base includes a connecting part 45 and a mounting part 46. The water jet 3 is disposed on the mounting part 46. The connecting part 45 is located on the inner surface of the conveyor belt 41. The pressure block 44 is located on the surface of the conveyor belt 46. The pressure block 44 and the connecting part 45 are connected and fixed in a way that clamps the conveyor belt 46. The water jet 3 is disposed on the mounting part 46. This structure is simple to assemble and highly practical. In addition, the slider 47 is connected to the lower end of the mounting part 46.

[0048] The water jet 3 consists of multiple jet heads 31, with the jetting direction between the jet heads 31 intersecting the corrugated cardboard. This design superimposes cutting energy, which can significantly improve penetration ability.

[0049] In some embodiments, the distance between the spray head 31 and the corrugated cardboard is 60mm-350mm, and the thickness of the corrugated cardboard is between 80mm-350mm.

[0050] A water jet cutting method for corrugated cardboard, characterized by comprising the following steps:

[0051] S1, water is injected into the first water jet 3 above the water tank 102 to ensure a water pressure of 350mpa-420mpa during cutting;

[0052] S2, working through the cardboard assembly, moves the corrugated cardboard below the movement trajectory of the water jet 3;

[0053] S3, the servo motor drives forward rotation, which drives the first water jet to move from the preparation area to the stop area via the conveyor belt 41, and cuts the corrugated cardboard when it passes through it. At the same time, the second water jet moves from the stop area to the preparation area.

[0054] S4, after the first water jet reaches the stop zone, the second water jet begins to increase the water pressure on the water receiving tank 102;

[0055] S5, the servo motor reverses and drives the second water jet to move from the preparation area to the stop area. The second water jet makes a new cut on the corrugated cardboard. At the same time, the first water jet stops spraying water and moves to the preparation area.

[0056] S6, with the servo motor working continuously, the first water jet 3 and the second water jet 3 are constantly alternating positions to cut the corrugated cardboard.

[0057] Furthermore, under the control of the host computer, after any set of waterjet cutting components 2 finishes cutting, another set of waterjet cutting components 2 is controlled to continue cutting the corrugated cardboard.

[0058] This water jet cutting method for corrugated cardboard can adapt to the high-speed cutting requirements of corrugated cardboard of different sizes, with high cutting quality, reduced dust generation, and optimized power consumption.

[0059] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A movable water jet cutting device for use on a corrugated board production line, characterized in that, The device includes a cardboard assembly and a water jet cutting assembly suspended on the cardboard assembly. The water jet cutting assembly is used to cut the continuously fed corrugated cardboard on the cardboard assembly without stopping the machine. The water jet cutting assembly includes two or more water jets and a conveyor belt that provides a closed-loop path for the water jets, so that the two water jets switch back and forth between cutting and resetting states. The closed-loop path extends to the outside of the corrugated cardboard.

2. A mobile water knife cutting device for use on a corrugated paperboard production line as claimed in claim 1, wherein, The water pressure generated by the water jet is between 350 MPa and 420 MPa.

3. A mobile water knife cutting device for use on a corrugated paperboard production line as defined in claim 1, wherein, The waterjet cutting assembly has four sets.

4. A mobile water knife cutting device for use on a corrugated paperboard production line as defined in claim 1, wherein, The conveyor belt is inclined relative to the paper feeding direction.

5. A mobile water knife cutting device for use on a corrugated paperboard production line as defined in claim 1, wherein, The cardboard assembly includes a frame with a water receiving trough below the water jet. The water receiving trough corresponds to the path outside the corrugated cardboard. The frame has a slide rail, and the water jet has a slider that slides along the slide rail.

6. A mobile water knife cutting device for use on a corrugated paperboard production line as defined in claim 5, wherein, The frame is equipped with a water tank, a servo motor, and a driven wheel assembly. The water pump in the water tank is connected to the water jet through a pipe. The motor shaft of the servo motor is fitted with a drive wheel. The conveyor belt is fitted onto the driven wheel in the drive wheel and driven wheel assembly, so that the conveyor belt can move above the corrugated cardboard.

7. A mobile water knife cutting device for use on a corrugated paperboard production line as defined in claim 5, wherein, It also includes a mounting base and a pressure block. The mounting base includes a connecting part and a mounting part. The water jet is set on the mounting part, the connecting part is located on the inner surface of the conveyor belt, and the pressure block is located on the surface of the conveyor belt. The pressure block and the connecting part are connected and fixed by clamping the conveyor belt. The water jet is set on the mounting part, and the slider is connected to the lower end of the mounting part.

8. A mobile water knife cutting device for use on a corrugated paperboard production line as defined in claim 1, wherein, A water jet is composed of multiple nozzles, and the spray direction between the nozzles intersects with the corrugated cardboard.

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