Paper cup processing die cutting device

Abstract

The utility model belongs to the technical field of paper cup processing, and particularly relates to a paper cup processing die cutting device which comprises two metal rollers and a wind-up roller parallel to the metal rollers. The die cutting tool can make contact with the upper surface of the other metal roller when reaching the position below one metal roller, a supporting roller is horizontally arranged between the lower metal roller and the winding roller, a tubular sponge sleeve adheres to the outer surface of the supporting roller, and a water supply mechanism is arranged at the position, close to the metal rollers, outside the sponge sleeve. A plurality of sprayers communicated with the water supply mechanism are linearly distributed outside the sponge sleeve, the sprayers spray water flow to the sponge sleeve for wetting, the water supply mechanism comprises a hard pipe arranged outside the sponge sleeve, and the interior of the hard pipe is communicated with water inlets of the sprayers. The single-side waste edge wetting device can wet waste edges on a single side, reduces the tightening degree of the waste edges, is convenient to prevent snap, and improves the continuity of waste edge collection in the die cutting process.

Description

Technical Field

[0001] This utility model belongs to the field of paper cup processing technology, and specifically relates to a paper cup processing die-cutting device. Background Technology

[0002] In a paper cup production line, the unwound paper is first printed with patterns or logos, and then precisely cut according to a pre-set mold shape to form the various parts of the paper cup (such as fan-shaped pieces, the bottom, etc.). Die-cutting machines are usually equipped with high-speed die-cutting blades, which can efficiently complete the cutting task.

[0003] Die-cutting machines are mainly divided into two categories based on the die-cutting direction, as follows:

[0004] Firstly, the flat mode: Printed paper is fed to a hydraulic table using conveyor rollers. The hydraulic table is equipped with multiple die-cutting blades, which cut out multiple paper sheets upon pressure. These sheets are then transferred using an electric suction cup, and any remaining waste paper is collected by a take-up roller. In this process, the electric suction cup takes 1-3 seconds to move, resulting in a feeding interval, hence its limited use.

[0005] Secondly, the die-cutting roller type: Two vertically symmetrical metal rollers are installed inside the frame. Multiple die-cutting blades are mounted on the outer surface of the upper metal roller, which can continuously cut paper when it engages with the lower metal roller. After the two rollers eject the paper sheets, waste paper is collected by a take-up roller.

[0006] During the paper die-cutting process, two metal rollers are fed in and cut out multiple paper pieces. The waste edges are continuously collected by the winding roller below. However, the surface of the waste edges has many large holes, and the edges become thin. They are then pulled tight by the winding roller, making the waste edges taut and prone to partial breakage. This is not conducive to the continuous collection of waste edges during the die-cutting process. Utility Model Content

[0007] The purpose of this invention is to provide a paper cup processing die-cutting device that can wet the waste edge on one side, reduce the tension of the waste edge to prevent breakage, and improve the continuity of waste edge collection during the die-cutting process.

[0008] The specific technical solution adopted by this utility model is as follows:

[0009] A paper cup die-cutting device includes two metal rollers and a take-up roller parallel to the metal rollers. Multiple die-cutting cutters are arranged in a circumferential array on the outer surface of the upper metal roller, and these cutters can contact the upper surface of the other metal roller when they reach below the first one. A support roller is horizontally arranged between the lower metal roller and the take-up roller. A tubular sponge sleeve is adhered to the outer surface of the support roller. A water supply mechanism is located near the metal rollers on the outside of the sponge sleeve. Multiple nozzles communicating with the water supply mechanism are also linearly distributed on the outside of the sponge sleeve. The paper is fed between two metal rollers, which rotate in opposite directions. The die-cutting cutter continuously rolls and cuts the paper, producing individual paper pieces and waste edges. The waste edges are then diagonally wound downwards around the support roller and the take-up roller to separate them from the paper pieces. While the take-up roller is winding the waste edges, the water supply mechanism is activated to spray water evenly onto the sponge sleeve along each nozzle. This allows the support roller to coat the wet sponge sleeve with water on the waste edge side, enabling single-sided wetting of the waste edge, reducing its tension and preventing breakage, and improving the continuity of waste edge collection during the die-cutting process.

[0010] As a preferred embodiment, the water supply mechanism includes a rigid pipe disposed outside the sponge sleeve. The interior of the rigid pipe is connected to the water inlet of the nozzle. One end of the rigid pipe is closed, and the other end is connected to a water pump. When the water source is turned on and the water pump is started, water is intermittently supplied to the nozzle along the rigid pipe. The nozzle sprays water 10 times per minute, keeping the sponge sleeve just moist and preventing water from dripping downwards as much as possible. No manual water addition is required. When die-cutting is stopped, the water pump is turned off to stop the water supply.

[0011] As a preferred embodiment, a wastewater trough is provided at intervals below the sponge sleeve, with one side of the wastewater trough extending horizontally to below the nozzle outlet. A wastewater outlet connected to the sewer is provided on the lower surface of the wastewater trough. Once the sponge sleeve drips water, it will fall into the wastewater trough and be discharged into the sewer through the wastewater outlet, preventing contamination of the frame and waste edges.

[0012] As a preferred embodiment, a water baffle is provided at intervals above the sponge sleeve. One side of the water baffle extends obliquely upward toward a metal roller above it. Once the support roller is pushed to rotate by the friction of the waste edge, it applies a centrifugal force to the sponge sleeve, which may cause water droplets to fly off. The water baffle separates the paper and the sponge sleeve, preventing water droplets from splashing onto the paper.

[0013] As a preferred embodiment, a receiving fork is provided at intervals above the baffle plate. The receiving fork is multi-pointed near the middle of the two take-up rollers. The height of the upper surface of the receiving fork is less than the height of the upper surface of the metal roller below it. After the paper flies away from the middle of the two metal rollers, it is caught by the receiving fork at an angle below. A feeding conveyor belt is installed downstream of the receiving fork. This technical solution is existing technology and is not shown in the figure.

[0014] As a preferred embodiment, multiple belts are spaced apart above the receiving fork. The belts extend obliquely downward on the side closest to the metal roller. The belts are driven to rotate by a motor D. The lower surface of the belts presses down on the paper pieces on the receiving fork and pushes these paper pieces to slide on the upper surface of the receiving fork away from the metal roller, preventing the paper pieces from deviating from the receiving fork.

[0015] As a preferred embodiment, support wheels are provided at each of the four corners inside the belt.

[0016] The technical effects achieved by this utility model are as follows:

[0017] In this invention, paper is fed between two metal rollers, which rotate in opposite directions. The die-cutting cutter continuously rolls and cuts the paper, producing individual paper pieces and waste edges. The waste edges are then diagonally wound downwards around the support roller and the take-up roller to separate them from the paper pieces. While the take-up roller is winding the waste edges, the water supply mechanism is activated to spray water evenly onto the sponge sleeve along each nozzle. This causes the support roller to carry the wet sponge sleeve to coat the waste edge side with clean water, allowing the waste edge to be wetted on one side. This makes the waste edge more flexible, reduces its tension, facilitates prevention of breakage, and improves the continuity of waste edge collection during the die-cutting process.

[0018] This invention allows you to turn on the water source, start the water pump, and intermittently supply water to the nozzles along the rigid pipe. The nozzles spray water 10 times per minute, keeping the sponge sleeve just moist and preventing water from dripping downwards as much as possible. No manual water addition is required. When you stop die-cutting, simply turn off the water pump to stop the water supply. Attached Figure Description

[0019] Figure 1 This is a front view of a paper cup processing and die-cutting device according to this utility model;

[0020] Figure 2 This is a perspective view of a paper cup processing and die-cutting device according to this utility model;

[0021] Figure 3 This is a plan view of the internal structure of the frame of this utility model;

[0022] Figure 4 This is a front view of the metal roller equipped with a die-cutting tool according to this utility model;

[0023] Figure 5 This is a system block diagram of the control panel of this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Metal roller; 2. Rewinding roller; 3. Die-cutting cutter; 4. Support roller; 5. Sponge sleeve; 6. Nozzle; 7. Rigid pipe; 8. Water pump; 9. Wastewater tank; 10. Water baffle; 11. Receiving fork; 12. Belt; 13. Support wheel. Detailed Implementation

[0026] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0027] like Figures 1-5 As shown, a paper cup processing die-cutting device is supported by a frame and includes two metal rollers 1 and a take-up roller 2 parallel to the metal rollers 1. Multiple die-cutting cutters 3 are arranged in a circumferential array on the outer surface of the upper metal roller 1. The number of die-cutting cutters 3 is 5 to 7 sets. Five sets of die-cutting cutters 3 are suitable for narrower paper widths, and seven sets are suitable for wider paper widths. In this embodiment, five sets of die-cutting cutters 3 are preferred. The die-cutting cutters 3 can contact the upper surface of the other metal roller 1 when they reach below the first metal roller 1. A support roller 4 is horizontally arranged between the lower metal roller 1 and the take-up roller 2. Both ends of the two metal rollers 1 and both ends of the support roller 4 are rotatably connected to the upper surface of the lower metal roller 1 via bearings. The frame has a take-up roller 2 with rotating seats with bearings at both ends, which are locked into the slots of the frame. The two metal rollers 1 are driven by motor A, the take-up roller 2 is driven by motor B, and the support roller 4 is driven by motor C. A tubular sponge sleeve 5 is bonded to the outer surface of the support roller 4. A water supply mechanism is set on the outside of the sponge sleeve 5 near the metal roller 1. Multiple nozzles 6 connected to the water supply mechanism are also linearly distributed on the outside of the sponge sleeve 5. The nozzles 6 are all suspended by the water supply mechanism and spray water towards the sponge sleeve 5 to wet it. The nozzles 6 are distributed in a horizontal array, and the number of nozzles 6 can be 5 to 7, each aligned with a set of die-cutting cutters 3. In this embodiment, 5 nozzles are preferred.

[0028] In a paper cup production line, starting with a paper roll, the paper roll is unloaded using an unwinding roller, and the paper end is placed into a printing press. The ink pattern is printed on one side, and then the paper is conveyed using guide rollers. It is then dried by a baking lamp or hot air blower and then sent into the frame to wait for die cutting.

[0029] Paper is conveyed into the frame using a conveyor belt or conveyor roller and fed between two metal rollers 1. At this time, the two metal rollers 1 rotate in opposite directions, and the die-cutting cutter 3 continuously rolls and cuts the paper, producing individual paper pieces and waste edges. The waste edges are diagonally downward and pass around the support roller 4 and the take-up roller 2 in sequence to separate them from the paper pieces. While the take-up roller 2 is winding the waste edges, the water supply mechanism is activated to spray water evenly onto the sponge sleeve 5 along each nozzle 6. This allows the support roller 4 to drive the wet sponge sleeve 5 to coat the waste edge side with clean water, which can wet the waste edge on one side, making the waste edge more flexible, reducing the tension of the waste edge and making it easier to prevent breakage. It also improves the continuity of waste edge collection during the die-cutting process. Moreover, the wetted waste edge is softer after being rolled up, and the stress inside the roll is significantly reduced, with almost no edge breakage, missing strips, or strip slippage.

[0030] like Figure 4 As shown, the die-cutting cutter 3 is a hollow fan-shaped ring with a cutting edge on its outer edge. As it moves to the lowest point with one metal roller 1, it just contacts the upper surface of the other metal roller 1 without bumping the cutting edge, thus ensuring high safety when cutting paper.

[0031] See attached document Figure 2 , Figure 3 and Figure 5 The water supply mechanism includes a rigid pipe 7 installed outside the sponge sleeve 5. The rigid pipe 7 is fixed inside the frame by wire. The inside of the rigid pipe 7 is connected to the water inlet of the nozzle 6. One end of the rigid pipe 7 is closed, and the other end is connected to a water pump 8. The water inlet of the water pump 8 is connected to a water source. When the water source is turned on, the water pump 8 is started, and water is intermittently supplied to the nozzle 6 along the rigid pipe 7. The nozzle 6 sprays water 10 times per minute, so that the sponge sleeve 5 is just kept moist and does not drip water downwards as much as possible. No manual water addition is required. When die cutting is stopped, the water pump 8 is turned off to stop the water supply.

[0032] See attached document Figure 2 and Figure 3 Wastewater troughs 9 are spaced below the sponge sleeve 5. The two ends of the wastewater troughs 9 are fixed to the inner wall of the frame with screws. One side of the wastewater troughs 9 extends horizontally to the bottom of the nozzle 6. The lower surface of the wastewater troughs 9 is provided with a wastewater outlet connected to the sewer. Once the sponge sleeve 5 drips water, it will fall into the wastewater troughs 9 and be discharged into the sewer through the wastewater outlet, preventing contamination of the frame and waste edges.

[0033] See attached document Figure 2 and Figure 3 A water baffle 10 is provided at intervals above the sponge sleeve 5. The two ends of the water baffle 10 are fixed to the inner wall of the frame by screws. One side of the water baffle 10 extends obliquely upward toward a metal roller 1. Once the support roller 4 is pushed to rotate by the friction of the waste edge, it applies centrifugal force to the sponge sleeve 5, which may cause water droplets to fly off. The water baffle 10 is used to separate the paper and the sponge sleeve 5 to prevent water droplets from splashing onto the paper.

[0034] See attached document Figure 2 and Figure 3 Above the baffle plate 10, there are spaced receiving forks 11. The receiving forks 11 are multi-pointed near the middle of the two winding rollers 2. The height of the upper surface of the receiving fork 11 is less than the height of the upper surface of the metal roller 1 below. After the paper flies away from the middle of the two metal rollers 1, it is caught by the receiving fork 11 at an angle below. A feeding conveyor belt is installed downstream of the receiving fork 11. This technical solution is the prior art and is not shown in the figure.

[0035] See attached document Figure 1 , Figure 2 and Figure 3Multiple belts 12 are spaced apart above the receiving fork 11. The belts 12 extend diagonally downward on the side closest to the metal roller 1. The belts 12 are driven to rotate by the motor D. The lower surface of the belts 12 presses against the paper pieces on the receiving fork 11 and pushes these paper pieces to slide on the upper surface of the receiving fork 11 away from the metal roller 1, preventing the paper pieces from deviating from the receiving fork 11.

[0036] See attached document Figure 2 , Figure 3 and Figure 5 The belt 12 has four support wheels 13 at its four corners. When the motor D rotates, one support wheel 13 rotates and the remaining three support wheels 13 tighten the belt 12, so that the belt 12 can rotate while keeping it close to the paper. Each row of support wheels 13 is connected by an alloy shaft so that they can rotate synchronously.

[0037] The working principle of this utility model is as follows: During operation, the printed paper is fed between two metal rollers 1. At this time, the two metal rollers 1 rotate in opposite directions and are continuously rolled and cut by the die-cutting cutter 3 to produce individual paper pieces and waste edges. The waste edges are diagonally downward and pass around the support roller 4 and the winding roller 2 in sequence to separate them from the paper pieces. The winding roller 2 is used to wind up the waste edges.

[0038] At the same time, the water supply mechanism is activated to spray water evenly along each nozzle 6 towards the sponge sleeve 5, so that the support roller 4 drives the wet sponge sleeve 5 to coat the waste edge with clean water. This allows the waste edge to be wetted on one side, making it more flexible, reducing the tension of the waste edge, making it easier to prevent breakage, and improving the continuity of waste edge collection during the die-cutting process.

[0039] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A paper cup processing die-cutting apparatus, comprising two metal rollers (1) and a take-up roller (2) parallel to the metal rollers (1), wherein a plurality of die-cutting cutters (3) are arranged in a circumferential array on the outer surface of the upper metal roller (1), characterized in that: The die-cutting cutter (3) can reach the upper surface of another metal roller (1) when it reaches below one metal roller (1). A support roller (4) is horizontally arranged between the lower metal roller (1) and the winding roller (2). A tubular sponge sleeve (5) is bonded to the outer surface of the support roller (4). A water supply mechanism is arranged on the outside of the sponge sleeve (5) near the metal roller (1). Multiple nozzles (6) connected to the water supply mechanism are also linearly distributed on the outside of the sponge sleeve (5). The nozzles (6) spray water towards the sponge sleeve (5) to wet it.

2. The paper cup processing and die-cutting device according to claim 1, characterized in that: The water supply mechanism includes a rigid pipe (7) disposed outside the sponge sleeve (5), the inside of the rigid pipe (7) is connected to the water inlet of the nozzle (6), one end of the rigid pipe (7) is closed, and the other end is connected to a water pump (8).

3. The paper cup processing and die-cutting device according to claim 1, characterized in that: Wastewater tanks (9) are provided at intervals below the sponge sleeve (5), and one side of the wastewater tanks (9) extends horizontally to the bottom of the nozzle (6) outlet.

4. The paper cup processing and die-cutting device according to claim 1, characterized in that: A water baffle (10) is provided at intervals above the sponge sleeve (5), and one side of the water baffle (10) extends obliquely upward toward a metal roller (1) above it.

5. The paper cup processing die-cutting device according to claim 4, characterized in that: The water baffle (10) is provided with a receiving fork (11) at intervals above it. The receiving fork (11) is multi-pointed near the middle of the two winding rollers (2). The height of the upper surface of the receiving fork (11) is less than the height of the upper surface of the metal roller (1) below it.

6. The paper cup processing die-cutting device according to claim 5, characterized in that: Multiple belts (12) are spaced apart above the receiving fork (11), and the belts (12) extend obliquely downward on the side near the metal roller (1).

7. A paper cup processing die-cutting device according to claim 6, characterized in that: The belt (12) has support wheels (13) at each of its four corners.

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