Die cutting paper product rim charge removing device and method

Abstract

The invention discloses a die cutting paper product rim charge removing device and method, and relates to the technical field of paper product processing equipment. The device comprises a rack, a containing disc is placed on the rack and used for bearing paper products, a hydraulic rod is fixedly installed on the rack through an installation arm, the end of the hydraulic rod is fixedly connected with a U-shaped frame, the bottom end of the U-shaped frame is fixedly connected with a pressing frame, and the bottom face of the pressing frame is fixedly connected with a die cutting tool through a connecting part and a bolt on the surface of the pressing frame. According to the device, the clearing mechanisms are arranged on the periphery of the pressing frame, so that the generated frame type offcut can be timely and automatically discharged laterally while the die cutting action is carried out, the problem of retention of the offcut is solved, and the device does not need to be shut down for manual clearing; through collaborative design of the elastic pressing mechanism and the die-cutting tool, stable fixation of paper products before cutting is ensured, and the cutting quality is improved; the die-cutting cutter adopts the combined design of the main cutter and the edge cutter, and edge materials are segmented in advance, so that the clearing resistance is greatly reduced, and the clearing process is smoother and more efficient.

Description

Technical Field

[0001] This invention relates to the field of paper product processing equipment technology, specifically to a device and method for removing edge material from die-cut paper products. Background Technology

[0002] In the production of paper products such as cartons, boxes, and paper liners, die-cutting is a crucial forming process. Traditional die-cutting processes typically use a die-cutting plate equipped with rectangular or irregularly shaped blades to punch and cut stacked or single sheets of paper products under the action of a press to obtain the desired shape.

[0003] After die-cutting, the waste material cut off from the product's periphery (i.e., edge material) is connected to the product's inner contour, usually forming a complete, frame-like strip structure that tightly fits around the die-cutting tool or remains between the mold and the product. This frame-like edge material structure is quite strong and difficult to detach or break on its own. Operators must stop the machine after the die-cutting process and manually remove, peel off, and clean this frame-like edge material from the equipment. This not only severely impacts production efficiency and increases the labor intensity of workers, but also easily interferes with the positioning accuracy of the next die-cutting operation due to incomplete edge material cleaning, and may even lead to safety accidents.

[0004] Therefore, a device and method for removing edge material from die-cut paper products are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for removing edge material from die-cut paper products in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution: A die-cutting paper product edge removal device includes a frame with a placement tray for supporting the paper product. A hydraulic rod is fixedly mounted on the frame via an mounting arm. A U-shaped frame is fixedly connected to the end of the hydraulic rod. A clamping frame is fixedly connected to the bottom end of the U-shaped frame. A die-cutting cutter is fixedly connected to the bottom surface of the clamping frame via a connecting part on its surface and bolts. A removal mechanism is provided around the clamping frame. When the die-cutting cutter is die-cutting the paper product, the edge material is cleaned and discharged to the side by the removal mechanism.

[0007] Furthermore, an elastic clamping mechanism is movably inserted into the U-shaped frame. The elastic clamping mechanism is located inside the clamping frame and vertically clamps the paper products stacked on the hydraulic rod during the die-cutting of the paper products.

[0008] Furthermore, the die-cutting tool includes a mounting frame that fits against the bottom surface of the clamping frame. A rectangular die-cutting tool is fixedly mounted on the bottom surface of the mounting frame, and corner die-cutting tools are provided at the corners of the rectangular die-cutting tool.

[0009] Furthermore, a positioning protrusion is welded to the top surface of the mounting frame, and the positioning protrusion is positioned and inserted into the bottom surface of the connecting part. During installation, the end of the bolt inserted into the connecting part is threaded into the inside of the positioning protrusion.

[0010] Furthermore, the cleaning mechanism includes side frames fixedly mounted on the surface of the clamping frame, conveyor wheels rotatably inserted into two sets of side frames on the same side, conveyor belts being fitted onto the two sets of conveyor wheels, and an electric motor fixedly mounted on the surface of one set of side frames, with the output end of the electric motor fixedly connected to the end of one set of side frames.

[0011] Furthermore, the bottom surface of the conveyor belt is on the same plane as the bottom ends of the rectangular die-cutting blade and the corner die-cutting blade. The rectangular die-cutting blade is used to die-cut the edges of the paper product, and the positioning convex ring cuts off the edge material of the die-cut paper product.

[0012] Furthermore, the elastic clamping mechanism includes two sets of rods that are movably inserted into the U-shaped frame, with a limit block fixedly installed at the top of the rod and a clamping plate fixedly installed at the bottom of the rod. A clamping spring is sleeved on the surface of the rod, with both ends of the clamping spring fixedly connected to the clamping plate and the U-shaped frame, respectively, and the clamping plate is movably arranged within the clamping frame.

[0013] A method for removing edge material from die-cut paper products includes the following steps: S1. Stack the paper products to be die-cut on the placement tray of the machine frame; S2. Start the hydraulic rod to drive the U-shaped frame and the connected elastic clamping mechanism, die-cutting tool and clearing mechanism to move down as a whole; S3. The elastic clamping mechanism first contacts and clamps the paper stack, and then the die-cutting knife completes the cutting. At the same time, the clearing mechanism is activated to discharge the edge material generated by cutting to the sides. S4. The hydraulic rod rises, the device resets, and the die-cut product is removed. The beneficial effects of this invention are as follows: By setting a clearing mechanism around the clamping frame, the generated frame-shaped edge material can be discharged laterally in a timely and automatic manner while the die-cutting operation is in progress, solving the problem of edge material retention and eliminating the need for manual cleaning by stopping the machine. The coordinated design of the elastic clamping mechanism and the die-cutting blade ensures the stable fixation of the paper before cutting, improving the cutting quality. The die-cutting blade adopts a combination design of main blade and edge blade, which pre-segments the edge material, greatly reducing the clearing resistance and making the clearing process smoother and more efficient. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a partial view of the present invention; Figure 3 This is the present invention. Figure 2 A front sectional view; Figure 4 This is the present invention. Figure 3 Enlarged view of part A; Figure 5 This is a partial exploded view of the present invention; Figure 6 This is a schematic diagram of the cleaning mechanism of the present invention; Reference numerals: 1. Frame; 11. Mounting arm; 2. Placement tray; 3. Hydraulic rod; 4. U-shaped frame; 5. Clamping frame; 51. Connecting part; 52. Bolt; 6. Elastic clamping mechanism; 601. Rod body; 602. Limiting block; 603. Clamping plate; 604. Clamping spring; 7. Die-cutting cutter; 701. Mounting frame; 702. Positioning convex ring; 703. Rectangular die-cutting cutter; 704. Corner die-cutting cutter; 8. Clearing mechanism; 801. Side frame; 802. Conveyor wheel; 803. Motor; 804. Conveyor belt. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0017] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0018] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0019] like Figures 1 to 6 As shown, a die-cutting paper product edge removal device includes a frame 1, on which a placement tray 2 is placed for supporting the paper product. A hydraulic rod 3 is fixedly installed on the frame 1 via a mounting arm 11. A U-shaped frame 4 is fixedly connected to the end of the hydraulic rod 3. A clamping frame 5 is fixedly connected to the bottom end of the U-shaped frame 4. A die-cutting blade 7 is fixedly connected to the bottom surface of the clamping frame 5 via a connecting part 51 and bolts 52. A removal mechanism 8 is provided around the clamping frame 5. When the die-cutting blade 7 is die-cutting the paper product, the edge material is cleaned and discharged to the side by the removal mechanism 8.

[0020] In this structure, the hydraulic rod 3 provides the main downward pressure, driving the U-shaped frame 4 and the clamping frame 5 to press down as a whole; the clamping frame 5 serves as the core bearing platform, integrating the die-cutting cutter 7 and the clearing mechanism 8; while the die-cutting cutter 7 descends to complete the cutting of the paper product, the surrounding clearing mechanism 8 simultaneously acts on the cut-off edge material, pushing it to the side or conveying it, realizing the simultaneous execution of the cutting and clearing actions, and achieving continuous die-cutting operation. Compared with the core problem of edge material retention in traditional processes, this significantly improves the level of automation and production efficiency.

[0021] An elastic pressing mechanism 6 is movably inserted into the U-shaped frame 4. The elastic pressing mechanism 6 is located inside the pressing frame 5. During the die-cutting of paper products, the elastic pressing mechanism 6 vertically presses the paper products stacked on the hydraulic rod 3. Specifically, the elastic pressing mechanism 6 includes two sets of rods 601 movably inserted into the U-shaped frame 4. A limit block 602 is fixedly installed at the top of the rod 601, and a pressing plate 603 is fixedly installed at the bottom of the rod 601. A pressing spring 604 is sleeved on the surface of the rod 601. The two ends of the pressing spring 604 are fixedly connected to the pressing plate 603 and the U-shaped frame 4, respectively. The pressing plate 603 is movably arranged inside the pressing frame 5.

[0022] More specifically, in the initial stage of the downward movement of the clamping frame 5, the clamping plate 603 contacts the paper stack first, and the clamping spring 604 is compressed, thereby applying a stable and adaptive clamping force to the paper stack; at the same time, by embedding the elastic clamping mechanism 6 in the clamping frame 5, the clamping and cutting are compactly integrated in the vertical space. While stabilizing the paper stack, the clamping plate 603 also provides a flat and stable working surface for the subsequent cutting of the die-cutting blade 7, preventing the paper from shifting or warping during cutting. The clamping first and then cutting ensures the quality of the die-cutting edge and the effectiveness of the clearing mechanism 8.

[0023] The die-cutting tool 7 includes a mounting frame 701 that fits against the bottom surface of the clamping frame 5. A rectangular die-cutting tool 703 is fixedly mounted on the bottom surface of the mounting frame 701, and corner die-cutting tools 704 are provided at the corners of the rectangular die-cutting tool 703. A positioning protrusion ring 702 is welded to the top surface of the mounting frame 701. The positioning protrusion ring 702 is positioned and inserted into the bottom surface of the connecting part 51. During installation, the end of the bolt 52 inserted into the connecting part 51 is threaded into the inside of the positioning protrusion ring 702.

[0024] More specifically, the rectangular die-cutting blade 703 forms the outer contour of the product, while the corner die-cutting blade 704 performs a secondary cut at the corner of the cutting path, pre-dividing the complete rectangular frame edge material into four independent straight segments; at the same time, through the insertion and engagement of the positioning protrusion ring 702 and the connecting part 51 and the locking of the bolt 52, the die-cutting blade 7 is quickly and accurately installed and fixed; working in conjunction with the clearing mechanism 8, the frame edge material that originally needed to be processed as a whole is transformed into loose strip material that is easy to be driven out in segments, greatly reducing the clearing resistance.

[0025] The cleaning mechanism 8 includes a side frame 801 fixedly mounted on the surface of the clamping frame 5. Conveyor wheels 802 are rotatably inserted into two sets of side frames 801 on the same side. Conveyor belts 804 are fitted on the two sets of conveyor wheels 802. A motor 803 is fixedly mounted on the surface of one set of side frames 801. The output end of the motor 803 is fixedly connected to the end of one set of side frames 801. The bottom surface of the conveyor belt 804 is on the same plane as the bottom ends of the rectangular die-cutting blade 703 and the corner die-cutting blade 704. The rectangular die-cutting blade 703 is used to die-cut the edges of the paper product. The positioning protrusion ring 702 cuts off the edge material of the die-cut paper product.

[0026] More specifically, the electric motor 803 drives the conveyor wheel 802 to continuously rotate the conveyor belt 804; when the device presses down, the bottom surface of the conveyor belt 804 contacts the edge material that has been separated by die-cutting, and the edge material is actively conveyed and thrown to the side of the equipment by relying on friction; at the same time, by setting the bottom surface of the conveyor belt 804 and the bottom end of the die-cutting blade to be on the same plane, the cleaning action and the cutting action are connected, that is, cut and clean immediately; the precise coordination of the physical position and action sequence of this active conveying cleaning mechanism and the die-cutting blade realizes the continuous automated process of edge material.

[0027] In some embodiments, the electric motor 803 may be a stepper motor or a servo motor to achieve precise control of the conveying speed; the conveyor belt 804 may be a rubber belt or a textured polyurethane belt to increase friction.

[0028] In summary: During operation, place the stacked paper products on the placement tray 2. Activate the hydraulic rod 3 to push the U-shaped frame 4 and the entire working head downwards. First, the clamping plate 603 of the elastic clamping mechanism 6 contacts and clamps the paper stack. Subsequently, the rectangular die-cutting blade 703 and the corner die-cutting blade 704 of the die-cutting cutter 7 cut into the paper, completing the product outline cutting and cutting off the edge material frame at the corner. Simultaneously, the conveyor belt 804 of the activated clearing mechanism 8 contacts the cut edge material segments, and under the action of friction, quickly conveys and throws each segment of edge material to the four sides of the clamping frame 5. The hydraulic rod 3 returns to its original position, the device resets, and the operator can then remove the die-cut product with no waste residue around it for the next operation.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A device for removing edge material from die-cut paper products, characterized in that, The machine includes a frame (1), on which a placement tray (2) is placed to support paper products. A hydraulic rod (3) is fixedly installed on the frame (1) via an mounting arm (11). A U-shaped frame (4) is fixedly connected to the end of the hydraulic rod (3). A pressing frame (5) is fixedly connected to the bottom end of the U-shaped frame (4). A die-cutting tool (7) is fixedly connected to the bottom surface of the pressing frame (5) via a connecting part (51) and bolts (52). A cleaning mechanism (8) is provided around the pressing frame (5). When the die-cutting tool (7) cuts the paper products, the edge material is cleaned and discharged to the side by the cleaning mechanism (8).

2. The die-cut paper product edge removal device according to claim 1, characterized in that, An elastic pressing mechanism (6) is movably inserted into the U-shaped frame (4). The elastic pressing mechanism (6) is located inside the pressing frame (5). When die-cutting paper products, the elastic pressing mechanism (6) vertically presses the paper products stacked on the hydraulic rod (3).

3. The die-cut paper product edge removal device according to claim 1, characterized in that, The die-cutting tool (7) includes a mounting frame (701) that fits against the bottom surface of the clamping frame (5). A rectangular die-cutting tool (703) is fixedly mounted on the bottom surface of the mounting frame (701), and corner die-cutting tools (704) are provided at the corners of the rectangular die-cutting tool (703).

4. The edge removal device for die-cut paper products according to claim 3, characterized in that, The top surface of the mounting frame (701) is welded with a positioning protrusion ring (702), which is positioned and inserted into the bottom surface of the connecting part (51). During installation, the end of the bolt (52) inserted into the connecting part (51) is threaded into the inside of the positioning protrusion ring (702).

5. The edge removal device for die-cut paper products according to claim 1, characterized in that, The cleaning mechanism (8) includes a side frame (801) fixedly installed on the surface of the clamping frame (5), and two sets of side frames (801) on the same side are rotatably connected to conveyor wheels (802). A conveyor belt (804) is sleeved on the two sets of conveyor wheels (802). A motor (803) is fixedly installed on the surface of one set of side frames (801), and the output end of the motor (803) is fixedly connected to the end of one set of side frames (801).

6. The edge removal device for die-cut paper products according to claim 5, characterized in that, The bottom surface of the conveyor belt (804) is on the same plane as the bottom ends of the rectangular die-cutting blade (703) and the corner die-cutting blade (704). The rectangular die-cutting blade (703) is used to die-cut the edges of the paper products, and the positioning ring (702) cuts off the edge material of the die-cut paper products.

7. The die-cut paper product edge removal device according to claim 2, characterized in that, The elastic clamping mechanism (6) includes two sets of rods (601) that are movably inserted into the U-shaped frame (4), and a limit block (602) is fixedly installed at the top of the rod (601). A clamping plate (603) is fixedly installed at the bottom of the rod (601). A clamping spring (604) is sleeved on the surface of the rod (601). The two ends of the clamping spring (604) are fixedly connected to the clamping plate (603) and the U-shaped frame (4) respectively. The clamping plate (603) is movably arranged in the clamping frame (5).

8. A method for removing edge material from die-cut paper products, characterized in that, Includes the following steps: S1. Stack the paper products to be die-cut on the placement tray (2) of the frame (1); S2. Start the hydraulic rod (3) to drive the U-shaped frame (4) and the elastic clamping mechanism (6), die-cutting tool (5) and clearing mechanism (8) connected thereto to move down as a whole; S3. The elastic pressing mechanism (6) first contacts and presses the paper stack, and then the die-cutting knife (7) completes the cutting. At the same time, the clearing mechanism (8) is activated to discharge the edge material generated by the cutting to the sides. S4. The hydraulic rod (3) rises back, the device resets, and the die-cut product is taken out.

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