A manual corner trimmer

Abstract

This utility model relates to a manually operated cutting device, and more particularly to a manual corner trimmer, comprising a handle, a mounting base, and a blade. The mounting base includes a connected main body and a stop, the main body being fixedly connected to the handle. A groove for accommodating the blade is formed between the main body and the stop. A fixing hole extending through the groove is provided on the main body. A tightening screw is installed in the fixing hole, and the tightening screw is screwed into the fixing hole and abuts against the blade in the groove, pressing and fixing the blade between the main body and the stop. This utility model solves the problem of existing manual tools lacking precise control over the cutting depth when trimming square openings in door frames from rounded corners to sharp corners.

Description

Technical Field

[0001] This utility model relates to a manually operated cutting device, and more particularly to a manual corner trimmer. Background Technology

[0002] In the door frame manufacturing industry, square openings on door frames often require fine machining to meet different design needs and functional requirements. Typically, the edges of the initially machined square openings are rounded; however, in many applications, these rounded corners need to be further processed into sharp corners to meet specific design specifications or aesthetic requirements.

[0003] Existing devices and technologies for rounding or sharpening square openings in door frames have certain limitations. First, most existing hand tools lack the ability to precisely control the cutting depth, which easily leads to over-cutting or under-cutting during the process, affecting the consistency of the final product quality.

[0004] In order to solve the above-mentioned technical problems, this utility model designs a manual corner trimmer. Utility Model Content

[0005] This utility model provides a manual corner trimming knife, which aims to solve the problem of the lack of precise control over the cutting depth when using existing manual tools to trim square openings in door frames from rounded corners to sharp corners. The technical solution is as follows: A manual corner trimmer includes a handle, a mounting base, and a blade. The mounting base includes a connected main body and a stop, the main body being fixedly connected to the handle. A groove for accommodating the blade is formed between the main body and the stop. A fixing hole is provided on the main body, extending into the groove. A tightening screw is installed in the fixing hole, the tightening screw being screwed into the fixing hole and abutting against the blade in the groove, thereby pressing and fixing the blade between the main body and the stop.

[0006] Based on the above technical solution, the bottom surface of the stop extends in a direction perpendicular to the handle, and its extension length is greater than the height of the main body.

[0007] Based on the above technical solution, the side of the stop portion and the side of the cutting edge of the blade are on the same vertical plane.

[0008] Preferably, the placement groove is provided with an adjustment groove, which is a horizontal groove; the blade is provided with a horizontal boss that matches the adjustment groove, and the horizontal boss is embedded in the adjustment groove.

[0009] Beneficial effects Compared with existing technologies, the beneficial effects of this utility model are: 1. By designing a stop section, the cutting depth is effectively limited during use, preventing over-cutting or under-cutting. This design ensures a consistent depth for each cut, improving processing consistency and accuracy. 2. With two blades positioned on either side of the mounting base, both sides of the workpiece can be trimmed simultaneously in a single operation, significantly improving work efficiency and reducing the time required for each operation. Furthermore, this symmetrical layout helps maintain the overall balance of the tool, making operation more stable and controllable. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0011] Figure 1 : A schematic diagram of the structure of this utility model; Figure 2 Side view of this utility model without the blade; Figure 3 : Figure 2 Sectional view of AA; Figure 4 : A schematic diagram of the structure of the blade described in this utility model; Figure 5 : A schematic diagram of the weight-reducing groove described in this utility model; Figure 6 This utility model describes a structure with two blades. Figure 7 : A schematic diagram of the structure of the door frame before corner trimming according to this utility model; Figure 8 : A schematic diagram of the door frame after corner trimming according to this utility model. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and examples: The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0013] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0014] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0015] like Figure 1 As shown, a manual corner trimmer includes a handle 1, a mounting base 2, and a blade 3.

[0016] like Figure 2 As shown, the mounting base 2 includes a main body 211 and a stop 22 connected together. The main body 211 is fixedly connected to the handle 1. A placement groove 23 for accommodating the blade 3 is formed between the main body 211 and the stop 22. The placement groove 23 is used to install the blade 3 by providing the placement groove 23 between the main body 211 and the stop 22.

[0017] The main body 211 has a fixing hole 24 extending into the placement groove 23. A tightening screw is installed in the fixing hole 24. The tightening screw is screwed into the fixing hole 24 and abuts against the blade 3 in the placement groove 23, pressing and fixing the blade 3 between the main body 211 and the stop part 22. Using the tightening screw to press and fix the blade 3 between the main body 211 and the stop part 22 ensures that the blade is securely installed in the correct position. This structural design ensures that the blade will not loosen or shift during use, thereby improving the stability and accuracy of cutting.

[0018] When the blade needs to be replaced or adjusted, simply loosen the set screw to easily remove the blade for replacement or adjustment. This makes tool maintenance simpler and faster, and also facilitates the selection of different types of blades according to different needs.

[0019] Because the blade is firmly clamped between the main body and the stop, and further reinforced by the tightening screw, the safety hazards that may be caused by the blade loosening are reduced, ensuring the user's operational safety.

[0020] The stop part 22 is designed not only to fix the blade, but also to limit the cutting during use and prevent over-cutting. The bottom surface of the stop part 22 extends in a direction perpendicular to the handle 1, and its extension length is greater than the height of the main body 21, so that the overall height of the stop part 22 is greater than the overall height of the main body 211.

[0021] When the tool is in use, the stop 22 will first contact the workpiece surface, thereby limiting the possibility of the blade 3 penetrating further into the material. This design can effectively prevent over-cutting due to improper operation.

[0022] The side of the stop portion 22 is on the same vertical plane as the side of the cutting edge of the blade 3. The stop portion 22 can serve as a guide surface, helping the operator to cut more accurately along a predetermined trajectory.

[0023] When the side of the stop 22 is not on the same vertical plane as the cutting edge of the blade 3, the position where the stop 22 contacts the workpiece surface and stops moving may not match the actual cutting endpoint position that the blade 3 needs to reach. This means that although the stop 22 has stopped at the predetermined position, the blade 3 may not have reached or may have exceeded the ideal cutting endpoint, resulting in a deviation in the cutting position. Due to the uncertainty and difficulty in controlling the cutting position, the final machined workpiece may have problems such as inconsistent dimensions and irregular shapes. Especially in applications with high precision requirements, such as the trimming of square openings in door frame manufacturing, this design defect will significantly affect product quality and appearance.

[0024] like Figure 3 and Figure 4 As shown, the placement groove 23 is provided with an adjustment groove 231, which is a horizontal groove; the blade 3 is provided with a horizontal boss 31 that matches the adjustment groove 231, and the horizontal boss 31 is embedded in the adjustment groove 231.

[0025] The design of the adjustment slot 231 allows the operator to fine-tune the extension length of the blade 3, i.e., the cutting depth, as needed. The horizontal boss 31 and the adjustment slot 231 work together to allow the user to easily make fine adjustments to adapt to different machining requirements.

[0026] The horizontally designed boss ensures accurate alignment of the blade 3 within the placement slot. Since both the horizontal boss 31 and the adjustment slot 231 are horizontal, the blade 3 can be installed in the correct orientation, avoiding tilting or offset, thereby improving cutting accuracy.

[0027] like Figure 5 As shown, a weight-reducing groove 25 is provided on the main body 21. This can effectively reduce the amount of material used, thereby significantly reducing the weight of the entire tool.

[0028] The blade 3 is made of steel, and its cutting edge is ground to form a 30° cutting edge. Using steel, such as 45 steel, to manufacture the blade 3 ensures that it has high hardness and wear resistance. This makes the blade less prone to wear during long-term use, extending its service life.

[0029] The handle 1 is made of phenolic resin. Phenolic resin has a good surface texture and can provide a comfortable grip experience.

[0030] like Figure 6 As shown, there are two blades 3 and two fixing holes 24, with the blades 3 positioned on both sides of the mounting base 2. By providing one blade 3 on each side of the mounting base 2, both sides of the workpiece can be trimmed simultaneously in a single operation. This significantly improves work efficiency, reduces the time required for a single operation, and is particularly suitable for batch processing tasks.

[0031] If an opening needs to be made in the door frame, such as Figure 7 The rounded corners are processed into... Figure 8 When using this corner trimmer to turn sharp corners, select the appropriate type of blade 3 according to the specific processing requirements, and install the two blades 3 into the placement slots 23 on both sides of the mounting base 2. Each blade 3 is embedded into the adjustment slot 231 in the placement slot through its horizontal boss 31, and is firmly fixed between the main body 211 and the stop part 22 using a tightening screw passing through the fixing hole 24.

[0032] The design of the adjustment groove 231 and the horizontal boss 31 allows the blade 3 to be moved up and down to adjust its extension length, i.e., the cutting depth. Ensure that the cutting depths of the two blades 3 are consistent to achieve a uniform machining effect. Confirm that the blades 3 are correctly aligned, ensuring that their cutting edge sides are on the same vertical plane as the side of the stop 22, so that the limiting baffle can accurately guide the blades to the predetermined cutting endpoint.

[0033] Hold handle 1 and place the tool at the square opening of the door frame that needs to be trimmed, so that the bottom of the stop 22 contacts the surface of the door frame, thereby limiting the cutting depth during the cutting process and preventing over-cutting.

[0034] The tool is advanced along a predetermined trajectory, such as the edge of a square opening in a door frame, to make cuts.

[0035] Since the blades 3 are distributed on both sides of the mounting base 2, both sides of the workpiece can be trimmed simultaneously in one operation, which improves work efficiency and ensures the consistency and symmetry of the processing.

[0036] After cutting, check if the edges of the trimmed square opening achieve the desired sharp corner effect. If necessary, make minor adjustments or cut again. Once finished, clean any debris from the tools and check the condition of the blade. If the blade is severely worn, replace it immediately.

[0037] It should be noted that the 45# steel, phenolic resin, and tightening screws in this embodiment are all general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0038] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A hand-held toe-correcting knife characterized in that: The utility model relates to a handle (1), mounting base (2) and blade (3), the mounting base (2) includes the main part (21) and the stop portion (22) of being connected, the main part (21) is fixedly connected with handle (1), the main part (21) and the stop portion (22) between form the placement slot (23) for accommodating blade (3), the fixed hole (24) that is set up on the main part (21) is through to the placement slot (23), the fixed hole (24) is installed with the screw down, and the screw down is screwed into fixed hole (24) and is butt joint blade (3) in the placement slot (23), and blade (3) is pressed tightly fixed between the main part (21) and the stop portion (22).

2. A manual toe-pruner according to claim 1, characterized in that: The bottom surface of the stop portion (22) extends in a direction perpendicular to the handle (1), and the extension length is greater than the height of the main part (21).

3. A manual toe-pruner according to claim 2, characterized in that: The side surface of the stop portion (22) is in the same vertical plane as the side surface of the cutting edge of the blade (3).

4. A manual toe-pruner according to claim 2, characterized in that: The placement slot (23) is provided with an adjusting slot (231), which is a horizontal groove; the blade (3) is provided with a horizontal boss (31) matched with the adjusting slot (231), and the horizontal boss (31) is embedded in the adjusting slot (231).

5. The manual toe-pruning knife according to claim 1, wherein: The main part (21) is provided with a weight-reducing groove (25).

6. A manual toe-pruner according to claim 2, characterized in that: The blade (3) is made of steel, and the cutting edge is ground to form a 30° edge.

7. The manual toe-pruning knife according to claim 1, wherein: The handle (1) is made of phenolic resin.

8. The manual toe-pruning knife according to claim 1, wherein: The number of the blade (3) and the fixed hole (24) is two, and the blade (3) is arranged on both sides of the mounting base (2).

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