A double-section cutting tool for stepped cutting of the edge of a sheet

Abstract

The utility model is suitable for the field of plate processing tool, provide a kind of double-section cutting tool for plate edge step shape cutting, including cutter body, the side of cutter body is equipped with the end baffle that protrudes from its surface, cutting blade and rolling pressure wheel that protrude from its surface are respectively installed on the cutter body, the length of cutting blade can be adjusted from the protrusion of cutter body surface, and cutting blade and rolling pressure wheel can be integrally adjusted with the distance of end baffle, the rolling pressure wheel is used to pre-crush plate surface hard layer, and cutting blade is used to cut plate soft core material.The utility model is through double-section structure, lateral direction and modularization design, realize low resistance, high accuracy, no dust one-time forming step cutting, significantly improve tool life and construction efficiency, suitable for indoor wet area waterproof operation.

Description

Technical Field

[0001] This utility model belongs to the field of sheet metal processing tools, and in particular relates to a two-stage cutting tool for step-shaped cutting of sheet metal edges. Background Technology

[0002] Backing boards, commonly used in underfloor heating systems, shower bases, and wet areas of kitchens, are typically composed of an XPS (extruded polystyrene) core, a surface mortar layer approximately 1mm thick, and fiberglass mesh. To ensure reliable waterproof sealing at the joints between adjacent boards, precise stepped overlaps must be cut along the edges of the boards during construction to increase the adhesive contact area and improve overall sealing performance. However, the high hardness and toughness of the composite surface necessitate special cutting tools.

[0003] In existing technologies, ordinary hand tools lack effective surface pretreatment mechanisms, leading to problems such as high resistance, easy tool skipping, and rapid blade wear during direct cutting. While electric cutting equipment is more efficient, it generates a large amount of dust, making it difficult to meet the clean construction environment requirements of indoor wet areas. In addition, conventional tools generally lack guiding and size adjustment structures, making it impossible to ensure the consistency of step width and making it difficult to achieve the step-by-step cutting logic of "breaking the hard surface layer first, then cutting the soft core material with low resistance." This results in a laborious cutting process, poor precision, and the need for secondary adjustments, seriously affecting construction efficiency and waterproofing quality.

[0004] Therefore, in view of the above situation, there is an urgent need to develop a two-stage cutting tool for step-shaped cutting of sheet metal edges to overcome the shortcomings in current practical applications. Utility Model Content

[0005] The purpose of this invention is to provide a two-stage cutting tool for step-shaped cutting of sheet metal edges, aiming to solve the problems mentioned in the background art.

[0006] This invention is implemented as follows: a two-stage cutting tool for step-shaped cutting of sheet metal edges includes a blade body, one side of which is provided with an end baffle protruding from its surface. A rolling pressure roller and a cutting blade protruding from its surface are respectively mounted on the blade body. The length of the cutting blade protruding from the surface of the blade body can be adjusted, and the distance between the cutting blade and the rolling pressure roller and the end baffle can be adjusted as a whole. The rolling pressure roller is used to pre-crush the hard layer on the surface of the sheet metal, and the cutting blade is used to cut the soft core material of the sheet metal.

[0007] In a further technical solution, the blade body includes two end plates, and a plurality of intermediate plates are provided between the two end plates. One of the end plates is connected to the end baffle. A fixing screw hole is provided at each end of the blade body, and a fixing bolt for fixing the blade body is installed in the fixing screw hole.

[0008] In a further technical solution, a groove for mounting a cutting blade is obliquely opened on one of the intermediate plates, and a fixing screw hole is opened on the blade body corresponding to the groove. A fixing bolt for abutting and fixing the cutting blade is installed in the fixing screw hole.

[0009] A further technical solution is provided where a pressure roller groove is also provided on the intermediate plate with the blade groove, the rolling pressure roller is installed in the pressure roller groove, a support shaft hole is provided on the intermediate plate corresponding to the center position of the pressure roller groove, a support shaft is installed in the support shaft hole, and the rolling pressure roller is slidably rotatably connected to the support shaft.

[0010] In a further technical solution, the diameter of the rolling pressure roller is 12–15 mm; the cutting blade is located behind the rolling pressure roller, and the distance between the two is 10 cm; the cutting blade is a replaceable utility knife blade.

[0011] In a further technical solution, a through hole is provided on the blade body at the position corresponding to the blade groove.

[0012] A further technical solution is that the side of the blade away from the end baffle is provided with an inwardly curved arc-shaped gripping structure.

[0013] In a further technical solution, the thickness of the intermediate plate, end baffle, and end plate is all 5mm.

[0014] The present invention provides a two-stage cutting tool for step-shaped cutting of sheet metal edges, which has the following advantages: The front rolling roller pre-crushes the mortar layer and fiberglass mesh on the surface of the slab, while the rear cutting blade only cuts the soft core material, significantly reducing cutting resistance by more than 70% and extending blade life by 3-5 times. Combined with a lateral guide structure (end baffle), it ensures precise and consistent step dimensions, meeting waterproof overlap accuracy requirements. The blade body adopts a standard modular design, allowing for flexible thickness adjustment to suit different step specifications, offering strong versatility. The machine requires no power supply, and the cutting process is dust-free and low-noise, making it particularly suitable for precise construction in indoor wet areas such as shower areas, bathrooms, and kitchens. It can form step structures in one step, eliminating the need for secondary adjustments and significantly improving construction efficiency and quality.

[0015] In summary, this utility model, through its dual-segment structure, lateral guidance, and modular design, achieves low-resistance, high-precision, and dust-free one-time step cutting, significantly improving tool life and construction efficiency, and is suitable for waterproofing operations in indoor wet areas. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a two-segment cutting tool for step-shaped cutting of sheet metal edges provided in an embodiment of this utility model; Figure 2 for Figure 1 Another perspective structural diagram; Figure 3 A bottom view of the structure of a two-segment cutting tool for step-shaped cutting of sheet metal edges provided in an embodiment of this utility model; Figure 4 for Figure 3 Axonometric drawing along the AA direction; Figure 5 This is a schematic diagram of the structure of the two-stage cutting tool for step-shaped cutting of sheet metal edges provided in this embodiment of the present invention during use.

[0017] In the diagram: 1-End baffle, 2-Intermediate plate, 3-Cutting blade, 4-Rolling pressure roller, 5-Fixing screw hole one, 6-Fixing bolt one, 7-Fixing bolt two, 8-Through hole, 9-End plate, 10-Fixing screw hole two, 11-Support shaft, 12-Pressure roller groove, 13-Cutting groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0020] like Figure 1-5 As shown in the illustration, a two-stage cutting tool for step-shaped cutting of sheet metal edges is provided in one embodiment of this utility model. The tool includes a blade body, with an end baffle 1 protruding from the blade body surface on one side. This end baffle serves as a lateral guide surface or baffle on the side of the blade body to adhere to the edge of the sheet metal during use, thus limiting the cutting trajectory and ensuring consistent step dimensions to meet the dimensional accuracy requirements of waterproof overlaps. The blade body is equipped with a cutting blade 3 and a rolling pressure roller 4, both protruding from the blade body surface. The length of the cutting blade 3 protruding from the blade body surface is adjustable. The distance between the cutting blade 3 and the rolling pressure roller 4 and the end baffle 1 can also be adjusted as a whole. With these features, a step-shaped groove structure required for waterproof overlaps can be formed in a single cutting operation.

[0021] The cutter body includes two end plates 9, and multiple intermediate plates 2 are provided between the two end plates 9. One of the end plates 9 is provided with an end baffle 1. Each end of the cutter body has a fixing screw hole 5 and is assembled and fixed by fixing bolts 6 installed on it. That is, the cutter body is composed of multiple detachable modules (preferably 5mm thick), which facilitates the adjustment of the overall thickness of the cutter and the step cutting width.

[0022] One of the intermediate plates 2 has an inclined groove 13 for mounting the cutting blade 3; the blade body also has a fixing screw hole 10 corresponding to the groove 13, and the cutting blade 3 is fixed by a fixing bolt 7 installed thereon. The extension length of the cutting blade 3 can be adjusted by loosening the fixing bolt 7; by adjusting the position of the intermediate plate 2, the distance between the cutting blade 3 and the end baffle 1 can be flexibly adjusted, thereby adapting to the cutting needs of steps of different widths.

[0023] The intermediate plate 2 with the blade groove 13 is also provided with a pressure roller groove 12. The rolling pressure roller 4 is installed in the pressure roller groove 12. The intermediate plate 2 is also provided with a support shaft hole at the center position corresponding to the pressure roller groove 12. The support shaft 11 is installed in the support shaft hole and is connected to the rolling pressure roller 4 for sliding and rotating (that is, sliding along the axis of the support shaft 11 and rotating around it). This facilitates the position change of the intermediate plate 2 and allows the rolling pressure roller 4 and the support shaft 11 to be adapted and adjusted in a convenient and quick manner.

[0024] By adjusting the number or position of the intermediate plates 2, the step width between the cutting blade 3 and the end baffle 1 can be flexibly controlled to adapt to different specifications of waterproof overlap requirements; the rolling pressure roller 4 and the cutting blade 3 are arranged in front and behind to form a "breaking-cutting separation" operation process, which protects the blade and improves the cutting flatness.

[0025] Preferably, the diameter of the rolling pressure roller 4 is 12–15 mm, which is used to roll and crush the mortar layer and mesh layer (such as fiberglass mesh) on the surface of the plate to form a controllable breaking line and significantly reduce the subsequent cutting resistance; the cutting blade 3 is set about 10 cm behind the rolling pressure roller 4. The cutting blade 3 is a replaceable utility blade, which is used to smoothly cut the XPS core material. This structure can extend the blade life by 3–5 times.

[0026] Furthermore, the cutting blade 3 may be provided with scale markings to facilitate intuitive adjustment of the extension length by the user; the surface of the rolling pressure roller 4 may be provided with grid-like or striped protrusions to enhance the crushing effect on hard surfaces.

[0027] In another embodiment, the rolling pressure roller 4 can be replaced with a roller with circumferential teeth, which is suitable for harder surface layers; the side of the blade body can also be provided with a dust suction port for connecting an external dust suction device to achieve instant dust removal during the cutting process.

[0028] Preferably, the blade body is provided with a through hole 8 corresponding to the blade groove 13, which facilitates the adjustment of the position of the cutting blade 3 and reduces the weight of the device; the side of the blade body away from the end baffle 1 is provided with an inwardly curved arc-shaped grip structure to improve hand-holding comfort and force application efficiency, and facilitate long-term operation.

[0029] When in use, the side guide surface of the cutter (i.e., end baffle 1) is pressed tightly against the edge of the backing plate and pushed forward in the desired direction; the front rolling pressure roller 4 first rolls and crushes the surface mortar and mesh; the rear cutting blade 3 cuts into the XPS core material along the breaking line; the thickness of the cutter body is determined by the number of intermediate plates 2 of the selected 5mm module, controlling the step width; the arc handle provides a good grip and ensures that the cutting trajectory is straight and stable; finally, a stepped groove structure that meets the requirements of waterproof overlap can be formed in one go.

[0030] The above embodiments of this utility model provide a two-stage cutting tool for step-shaped cutting of board edges. The front section, a rolling pressure roller 4, pre-crushes the mortar layer and fiberglass mesh on the surface of the backing plate or XPS board, while the rear section, a cutting blade 3, cuts only the soft core material, significantly reducing cutting resistance by more than 70%. Simultaneously, it avoids direct contact between the blade and the hard surface layer, extending its service life by 3-5 times. Combined with a lateral guide structure (end baffle 1), it ensures precise and consistent step cutting dimensions, meeting the precision requirements of waterproof overlaps. The blade body adopts a 5mm standard modular design, allowing for flexible thickness adjustment to adapt to different step specifications, offering strong versatility. The entire machine requires no power supply, and the cutting process is dust-free and low-noise, making it particularly suitable for precision construction in indoor wet areas such as shower areas, bathrooms, and kitchens. It can form the required step structure in one step, eliminating secondary adjustments and significantly improving construction efficiency and quality.

[0031] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A two-stage cutting tool for stepped cutting of sheet metal edges, comprising a tool body, characterized in that, One side of the blade body is provided with an end baffle (1) protruding from its surface; The blade body is respectively equipped with a rolling pressure roller (4) and a cutting blade (3) protruding from its surface. The length of the cutting blade (3) protruding from the surface of the blade body can be adjusted, and the cutting blade (3) and the rolling pressure roller (4) can be adjusted together to the distance from the end baffle (1). The rolling roller (4) is used to pre-crush the hard layer on the surface of the plate, and the cutting blade (3) is used to cut the soft core material of the plate.

2. The two-stage cutting tool for stepped cutting of sheet metal edges according to claim 1, characterized in that, The blade body includes two end plates (9), and a plurality of intermediate plates (2) are provided between the two end plates (9), one of the end plates (9) being connected to the end baffle (1); The blade body has a fixing screw hole (5) at each end, and a fixing bolt (6) for fixing the blade body is installed in the fixing screw hole (5).

3. The two-stage cutting tool for stepped cutting of sheet metal edges according to claim 2, characterized in that, One of the intermediate plates (2) is provided with a groove (13) for mounting a cutting blade (3) at an angle. The blade body has a fixing screw hole 2 (10) at the position corresponding to the blade groove (13), and a fixing bolt 2 (7) for abutting and fixing the cutting blade (3) is installed in the fixing screw hole 2 (10).

4. The two-stage cutting tool for stepped cutting of sheet metal edges according to claim 3, characterized in that, The intermediate plate (2) with the blade groove (13) is also provided with a pressure roller groove (12), and the rolling pressure roller (4) is installed in the pressure roller groove (12); A support shaft hole is provided on the intermediate plate (2) at the center position corresponding to the pressure roller groove (12), and a support shaft (11) is installed in the support shaft hole. The rolling pressure roller (4) is slidably and rotatably connected to the support shaft (11).

5. The two-stage cutting tool for stepped cutting of sheet metal edges according to claim 4, characterized in that, The diameter of the rolling pressure roller (4) is 12–15 mm; The cutting blade (3) is located behind the rolling pressure roller (4), and the distance between the two is 10cm; The cutting blade (3) is a replaceable utility blade.

6. The two-stage cutting tool for stepped edge cutting of sheet metal according to any one of claims 3-5, characterized in that, A through hole (8) is also provided on the blade body at the position corresponding to the blade groove (13).

7. The two-stage cutting tool for stepped cutting of sheet metal edges according to any one of claims 1-5, characterized in that, The blade body has an inwardly curved arc-shaped grip structure on the side away from the end baffle (1).

8. The two-stage cutting tool for stepped cutting of sheet metal edges according to any one of claims 2-5, characterized in that, The thickness of the intermediate plate (2), end baffle (1) and end plate (9) is 5 mm.

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