Corrugated board cutting device

Abstract

The utility model discloses a corrugated board cutting device, which relates to the technical field of carton production, and comprises a device main body, the upper side of the device main body is fixedly connected with a fixed plate, the upper side of the fixed plate is fixedly connected with a mounting frame, and the interior of the mounting frame is provided with a corner frame, a long frame and a narrow edge positioning strip. The corner frames are located at the four corners in the mounting frame, the long frames are located on the two wide edges in the mounting frame, the narrow edge positioning strips are located on the two narrow edges in the mounting frame, first gaps are reserved between the corner frames, the long frames and the narrow edge positioning strips and the mounting frame, and cutting blades are fixedly connected into the first gaps. According to the device, a hidden blade is driven to cut by utilizing the characteristic that foam sinks under pressure, a limiting structure and a synchronously ascending sawtooth strip are combined, so that a corrugated board is precisely cut and pre-folded under single punching, the cutting depth is automatically controlled by the material compression amount, and the blade is protected from rigid collision.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box production technology, and more specifically, to a corrugated cardboard cutting device. Background Technology

[0002] Corrugated cardboard cutting is a crucial step in carton production. Traditional processes require first cutting the cardboard into specific shapes using stamping equipment, and then using a crease machine to crease the edges. This step-by-step processing not only increases equipment investment and operating time, but also causes deviations in the cutting line and crease positions due to multiple positioning steps, affecting the accuracy of carton assembly. Especially in small-batch, multi-specification orders, frequent mold changes further reduce production efficiency.

[0003] Existing cutting devices generally employ a rigid stamping structure, with the blade fixed within a metal frame, directly penetrating the cardboard upon pressure. This method is prone to uneven pressure, resulting in delamination and burrs at the cut, and the rigid contact between the blade and the pressure plate can easily cause the blade edge to crack. Some improved solutions attempt to add indentation strips next to the blade, but due to the lack of a linkage control mechanism, the indentation depth and cutting path are difficult to match precisely. Furthermore, the complex structure increases maintenance costs. Therefore, to address the aforementioned technical problems, a corrugated cardboard cutting device is proposed here. Utility Model Content

[0004] The purpose of this invention is to provide a corrugated cardboard cutting device that utilizes the characteristic of foam sinking under pressure to drive a hidden blade for cutting. Combined with a limiting structure and synchronously rising serrated strips, the corrugated cardboard can be accurately cut and pre-creased in a single punch. The cutting depth is automatically controlled by the material compression amount, and the blade is protected from rigid collisions.

[0005] This utility model is achieved through the following technical solution:

[0006] A corrugated cardboard cutting device includes a main body, a fixing plate fixedly connected to the upper side of the main body, and an installation frame fixedly connected to the upper side of the fixing plate. The installation frame has a rectangular frame structure, and the interior of the installation frame is provided with corner frames, long frames, and narrow positioning strips. The corner frames are located at the four corners of the interior of the installation frame, the long frames are located at the two wider sides of the interior of the installation frame, and the narrow positioning strips are located at the two narrower sides of the interior of the installation frame. A first gap is left between the corner frames, long frames, and narrow positioning strips and the installation frame, and a cutting blade is fixedly connected inside the first gap.

[0007] Preferably, the corner frame, the long frame, and the narrow positioning strip are all fixedly connected to the upper side of the fixing plate.

[0008] Preferably, the mounting frame, corner frame, long frame, and narrow positioning strip are all made of foam material.

[0009] Preferably, the upper sides of the mounting frame, corner frame, long frame, and narrow positioning strip are all flush, and the top end of the cutting blade is slightly lower than the upper surface of the mounting frame, corner frame, long frame, and narrow positioning strip.

[0010] Preferably, the mounting frame has two sets of horizontally arranged first limiting plates installed inside, and two sets of symmetrically arranged second limiting plates are fixedly connected between the two sets of first limiting plates. The upper surfaces of the first limiting plates and the second limiting plates are lower than the top end of the cutting blade.

[0011] Preferably, a second gap is left between the long frame and the two sets of corner frames on both sides, and a fixing strip is fixedly installed inside the second gap, with a serrated groove on the upper side of the fixing strip.

[0012] Preferably, a vertical plate is fixedly connected to the upper side of the main body of the device, and the vertical plate completely covers the upper surface of the fixed plate. A driving device is fixedly connected to the upper side of the vertical plate.

[0013] Preferably, the lower side of the drive device is detachably connected to an electric telescopic rod, and the number of electric telescopic rods is four sets arranged symmetrically. The bottom of the electric telescopic rod is fixedly connected to a pressure plate, and the pressure plate completely covers the mounting frame.

[0014] The technical solution of this utility model has at least the following beneficial effects:

[0015] This utility model proposes a corrugated cardboard cutting device that achieves dynamic cutting by utilizing the compressibility of foam material. Under the action of the pressure plate, the corrugated cardboard causes the mounting frame to sink, automatically exposing the hidden blade to complete the cutting. The entire process requires no rigid impact, ensuring a smooth cut and avoiding blade damage. The cutting depth is precisely controlled by the material compression amount, and the limiting structure prevents over-pressure, significantly improving processing stability. The simultaneously completed serrated indentation and cutting edge are precisely aligned, eliminating the need for subsequent folding processes, improving carton assembly efficiency, and greatly reducing changeover time and production costs. The overall structure simplifies the operation process while achieving a dual improvement in cutting accuracy and equipment lifespan. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0018] Figure 3 This is a partial structural schematic diagram of the present invention;

[0019] Figure 4 for Figure 3 Enlarged view of B in the middle;

[0020] Figure 5 This is a partial structural cross-sectional view of the present invention;

[0021] Reference numerals in the attached drawings: 1. Main body of the device; 2. Fixing plate; 3. Mounting frame; 4. Corner frame; 5. Long frame; 6. Narrow positioning strip; 7. First gap; 8. Cutting blade; 9. First limiting plate; 10. Second limiting plate; 11. Second gap; 12. Fixing strip; 13. Serrated groove; 14. Vertical plate; 15. Drive device; 16. Electric telescopic rod; 17. Pressure plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 The present invention proposes a corrugated cardboard cutting device, comprising a device body 1, a fixing plate 2 fixedly connected to the upper side of the device body 1, and an installation frame 3 fixedly connected to the upper side of the fixing plate 2. The installation frame 3 is a rectangular frame structure. The installation frame 3 is provided with corner frames 4, long frames 5 and narrow positioning strips 6 inside. The corner frames 4 are located at the four corners inside the installation frame 3, the long frames 5 are located at the two wider sides inside the installation frame 3, and the narrow positioning strips 6 are located at the two narrower sides inside the installation frame 3. A first gap 7 is left between the corner frames 4, the long frames 5 and the narrow positioning strips 6 and the installation frame 3. A cutting blade 8 is fixedly connected inside the first gap 7.

[0024] The corner frame 4, the long frame 5, and the narrow positioning strip 6 are all fixedly connected to the upper side of the fixing plate 2. This fixing method ensures that each positioning component remains stable and provides a precise reference for subsequent cutting.

[0025] The mounting frame 3, corner frame 4, long frame 5, and narrow positioning strip 6 are all made of foam material. The elastic properties of the foam material allow the frame to automatically reset after being compressed, while also reducing the overall weight.

[0026] The upper sides of the mounting frame 3, corner frame 4, long frame 5, and narrow positioning strip 6 are all flush, and the top end of the cutting blade 8 is slightly lower than the upper surface of the mounting frame 3, corner frame 4, long frame 5, and narrow positioning strip 6. This height difference design ensures that the blade is initially hidden and only exposed for cutting when pressure is applied.

[0027] The mounting frame 3 has two sets of horizontally arranged first limiting plates 9 installed inside, and two sets of symmetrically arranged second limiting plates 10 are fixedly connected between the two sets of first limiting plates 9. The upper surfaces of the first limiting plates 9 and the second limiting plates 10 are lower than the top end of the cutting blade 8. The limiting plate group forms a protective barrier to prevent the blade from being overexposed and damaged.

[0028] A second gap 11 is left between the long frame 5 and the two sets of corner frames 4 on both sides. A fixing strip 12 is fixedly installed inside the second gap 11. A serrated groove 13 is opened on the upper side of the fixing strip 12. The serrated groove 13 forms a crease line during cutting, which facilitates the subsequent folding and shaping of the carton.

[0029] A vertical plate 14 is fixedly connected to the upper side of the main body 1 of the device, and the vertical plate 14 completely covers the upper surface of the fixed plate 2. A drive device 15 is fixedly connected to the upper side of the vertical plate 14. The vertical plate 14 provides stable support for the drive device 15, ensuring that the downward pressure is evenly distributed.

[0030] The lower side of the drive device 15 is detachably connected to an electric telescopic rod 16, and there are four sets of electric telescopic rods 16 arranged symmetrically. The bottom of the electric telescopic rod 16 is fixedly connected to a pressure plate 17, and the pressure plate 17 completely covers the mounting frame 3. The four sets of electric telescopic rods 16 are driven synchronously to ensure that the pressure plate 17 presses down smoothly, so that the cutting force is even.

[0031] The working principle of a corrugated cardboard cutting device based on the embodiment is as follows: First, the corrugated cardboard to be cut is completely covered on the upper surface of the mounting frame 3. The mounting frame 3 and its internal corner frame 4, long frame 5, and narrow positioning strip 6 are all made of lightweight foam material. Its flat surface can quickly position the cardboard and ensure accurate initial position before cutting. After the drive device 15 is started, four sets of symmetrically distributed electric telescopic rods 16 synchronously drive the pressure plate 17 to press down vertically. After the pressure plate 17 contacts the cardboard, it continues to apply pressure, forcing the foam material mounting frame 3 and its internal components to compress and deform downward. As the amount of compression increases, the cutting blade 8, which was originally hidden in the first gap 7, is gradually exposed. The top of the blade penetrates the cardboard to complete the cutting. The cutting depth is precisely controlled by the preset height difference between the top of the blade and the upper surface of the frame, which can completely cut the cardboard and avoid damage to the underlying structure.

[0032] During the compression process, the two sets of first limiting plates 9 and second limiting plates 10 inside the mounting frame 3 form a physical limiting barrier by being lower than the cutting blade 8. On the one hand, this ensures that the cardboard is completely cut, and on the other hand, by limiting the downward stroke of the pressure plate 17, it prevents the cutting blade 8 from rigidly colliding with the pressure plate 17, thereby protecting the blade edge and the pressure plate 17 from damage. At the same time, the fixing strip 12 in the second gap 11 between the long frame 5 and the corner frame 4 rises synchronously with the compression. The serrated groove 13 on its surface applies local pressure to the cardboard, forming a crease line that is precisely aligned with the cutting edge. This crease can be directly used as a folding reference in the subsequent carton assembly, saving the need for an additional creasing process.

[0033] Immediately after the cutting is completed, the electric telescopic rod 16 drives the pressure plate 17 to reset. The foam mounting frame 3 and its internal components automatically return to their initial state due to the elasticity of the material. The cutting blade 8 is hidden again in the first gap 7. The operator can safely take out the cut cardboard, which has a smooth edge and pre-pressed creases, and can directly enter the folding and bonding process. The entire device realizes the opening and closing of the dynamic cutting window through the elastic deformation of the foam material. Combined with the limiting structure and synchronous creasing function, the positioning, cutting and creasing operations are completed simultaneously in a single punching. This not only eliminates the cumulative error between traditional multi-processes, but also greatly improves production efficiency.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrugated cardboard cutting device, characterized in that: The device includes a main body (1), a fixing plate (2) is fixedly connected to the upper side of the main body (1), and an installation frame (3) is fixedly connected to the upper side of the fixing plate (2). The installation frame (3) has a rectangular frame structure. The installation frame (3) is provided with corner frames (4), long frames (5) and narrow positioning strips (6) inside. The corner frames (4) are located at the four corners inside the installation frame (3). The long frames (5) are located at the two wider sides inside the installation frame (3). The narrow positioning strips (6) are located at the two narrower sides inside the installation frame (3). A first gap (7) is left between the corner frames (4), long frames (5) and narrow positioning strips (6) and the installation frame (3). A cutting blade (8) is fixedly connected inside the first gap (7).

2. The corrugated cardboard cutting device according to claim 1, characterized in that: The corner frame (4), the long frame (5), and the narrow positioning strip (6) are all fixedly connected to the upper side of the fixing plate (2).

3. The corrugated cardboard cutting device according to claim 1, characterized in that: The mounting frame (3), corner frame (4), long frame (5), and narrow positioning strip (6) are all made of foam material.

4. The corrugated cardboard cutting device according to claim 1, characterized in that: The upper sides of the mounting frame (3), corner frame (4), long frame (5) and narrow positioning strip (6) are all flush, and the top end of the cutting blade (8) is slightly lower than the upper surface of the mounting frame (3), corner frame (4), long frame (5) and narrow positioning strip (6).

5. The corrugated cardboard cutting device according to claim 1, characterized in that: The mounting frame (3) is equipped with two sets of horizontally arranged first limiting plates (9), and two sets of symmetrically arranged second limiting plates (10) are fixedly connected between the two sets of first limiting plates (9). The upper surfaces of the first limiting plates (9) and the second limiting plates (10) are lower than the top end of the cutting blade (8).

6. The corrugated cardboard cutting device according to claim 1, characterized in that: A second gap (11) is left between the long frame (5) and the two sets of corner frames (4) on both sides. A fixing strip (12) is fixedly installed inside the second gap (11). A serrated groove (13) is opened on the upper side of the fixing strip (12).

7. The corrugated cardboard cutting device according to claim 1, characterized in that: A vertical plate (14) is fixedly connected to the upper side of the main body (1) of the device, and the vertical plate (14) completely covers the upper surface of the fixed plate (2). A driving device (15) is fixedly connected to the upper side of the vertical plate (14).

8. The corrugated cardboard cutting device according to claim 7, characterized in that: The lower side of the drive device (15) is detachably connected to an electric telescopic rod (16), and there are four sets of electric telescopic rods (16) arranged symmetrically. The bottom of the electric telescopic rod (16) is fixedly connected to a pressure plate (17), and the pressure plate (17) completely covers the mounting frame (3).

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