Adjustable edge sealing scraper blade

Abstract

The utility model relates to the field of woodworking tools. The adjustable edge sealing scraper blade comprises a main blade body and an auxiliary blade body, the two ends of the main blade body and the two ends of the auxiliary blade body are each provided with a blade part, and the R angle of the upper blade part of the main blade body is larger than that of the upper blade part of the auxiliary blade body; a center groove extending in the length direction of the main blade is formed in the middle of one face of the main blade, the width of the center groove is matched with that of the auxiliary blade, and the auxiliary blade is clamped in the center groove to form sliding fit. A mounting round hole is formed in the middle of the center groove, and a mounting strip hole extending in the length direction of the auxiliary blade is formed in the middle of the auxiliary blade; the main blade and the auxiliary blade are fixed to the tool apron through installation screws sequentially penetrating through the installation strip holes and the installation round holes. The size of the R angle of the scraper blade can be conveniently adjusted according to needs, and the scraper blade is very convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of woodworking tools, in particular to an edge banding scraper blade. Background Art

[0002] The edge banding machine for panel furniture uses a finishing knife and a contour tracking knife to chamfer the edge banding. However, since the finishing knife and the contour tracking knife are high-speed rotating parts, they will inevitably produce a certain amount of vibration, which will cause certain wavy lines on the edge banding after the chamfering is completed. In order to achieve a better processing appearance, it is often necessary to use a scraper blade to perform the final shaping of the edge banding, and then polish it.

[0003] Existing scraper blades such as Figure 1 As shown in the figure, it is fixedly installed under the conveying path of the plate through a knife holder (not shown in the figure). As the plate is continuously conveyed, the cutting edge on the scraper blade scrapes the edge banding flat, ultimately achieving a good appearance effect.

[0004] However, in the current use of scraper blades, different scraper blades are usually required according to the requirements of the appearance fullness of the chamfered arc and the thickness of the edge banding, such as: R1 (that is, 1mm diameter arc chamfer), R1.5, R2 scraper blades; and the scraper blades in the prior art are as follows Figure 1 The scraper blades shown in the figure are all fixed R angle. Therefore, in many cases, when workpieces with different arcs need to be processed, it is often necessary to replace an edge banding machine with a scraper blade with the corresponding R angle size, which causes certain troubles. At the same time, for many small factories, since the edge banding machine is expensive and they only have one edge banding machine, when the scraper blade needs to be replaced, it needs to be completely removed from the blade holder and replaced by a professional mechanic, which undoubtedly causes a lot of trouble. Summary of the invention

[0005] The utility model aims to provide an adjustable edge sealing scraper blade, the R angle of which can be quickly adjusted according to the needs.

[0006] To achieve the above-mentioned purpose of the invention, the technical solution adopted by the utility model is: an adjustable edge-banding scraper blade, comprising a main blade and a secondary blade, both ends of the main blade and the secondary blade are provided with cutting edges, the R angle of the cutting edge on the main blade is greater than the R angle of the cutting edge on the secondary blade; a central groove extending along the length direction of the main blade is provided in the middle of one side of the main blade, the width of the central groove is adapted to the width of the secondary blade, and the secondary blade is clamped in the central groove to form a sliding fit; a mounting circular hole is provided in the middle of the central groove, and a mounting strip hole extending along the length direction of the secondary blade is provided in the middle of the secondary blade; the main blade and the secondary blade are fixed to the blade seat by mounting screws that pass through the mounting strip hole and the mounting circular hole in sequence.

[0007] Preferably, the R angle of the upper edge of the main blade is R1.5 mm, and the R angle of the upper edge of the auxiliary blade is R1 mm.

[0008] Preferably, the R angle of the upper edge of the main blade is R2 mm, and the R angle of the upper edge of the auxiliary blade is R1.5 mm.

[0009] Preferably, the R angle of the upper edge of the main blade is R2 mm, and the R angle of the upper edge of the auxiliary blade is R1 mm.

[0010] Preferably, the inner edge of the mounting circular hole of the main blade and the inner edge of the mounting strip hole of the auxiliary blade are both compounded with a hardened ring made of high-hardness alloy.

[0011] Preferably, the cutting edges on the primary blade and the secondary blade are both diamond cutting edges, and the diamond cutting edges are composed of diamond sheets welded to substrates at both ends of the primary blade and the secondary blade.

[0012] Preferably, a layer of hardened film is sprayed on the bottom surface of the auxiliary blade.

[0013] The beneficial effects of the utility model are concentrated in that the R angle size of the scraper blade can be easily adjusted according to needs, and it is very convenient to use. Specifically, the utility model does not change the traditional installation form of the scraper blade, and can be quickly fixed on the blade holder by installing screws. When the R angle size needs to be adjusted, loosen the installation screws, push the auxiliary blade in the direction of the plate, and tighten the installation screws to lock it until the blade of the auxiliary blade slightly exceeds the blade of the main blade. The utility model can complete the layout of scrapers with different R angles on one edge banding machine at the same time. There is no need to completely remove the scraper blade when replacing it. The operation is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of an existing scraper blade when in use;

[0015] Figure 2 It is a structural schematic diagram of the utility model;

[0016] Figure 3 This is a schematic structural diagram of a preferred embodiment of the utility model when the main blade and the auxiliary blade are separated;

[0017] Figure 4 It is a schematic diagram of the use state of the utility model. DETAILED DESCRIPTION

[0018] like Figure 2-4 Compared with the traditional scraper blade with a constant R angle, the adjustable edge-sealing scraper blade shown in the figure can adjust the R angle according to actual needs without completely disassembling the scraper blade. It is very convenient to use and solves the problem of difficult replacement of existing scraper blades. Figure 1 As shown in the figure, the two ends of the existing scraper blade can be used alternately. When one end is blunt, the scraper blade can be removed from the installation slot of the blade holder, and the other end can be reinstalled and used again, so that one scraper blade has two cutting edges. However, when the R angle needs to be changed, the scraper blade still needs to be completely removed, and then replaced with a scraper blade of a different R angle, which makes it quite inconvenient to use.

[0019] The biggest difference between the utility model and the traditional scraper blade is that Figure 2 and 3 As shown in FIG. 1 , it comprises a main blade 1 and an auxiliary blade 2. Both ends of the main blade 1 and the auxiliary blade 2 are provided with a blade portion 3. The blade portion 3 can be an alloy blade or a diamond blade. When an alloy blade portion is used, as shown in FIG. Figure 2 As shown, it is usually directly processed by the main blade 1 and the auxiliary blade 2. When a diamond blade is used, Figure 3 As shown, the diamond blade is composed of diamond sheets 8 welded on the bases at both ends of the main blade 1 and the auxiliary blade 2 by a high-frequency welder.

[0020] In the present invention, the R angle of the upper edge 3 of the main blade 1 is greater than the R angle of the upper edge 3 of the auxiliary blade 2. Commonly used R angle forms include R1, R1.5, and R2, and their combination can be: the R angle of the upper edge 3 of the main blade 1 is R1.5mm, and the R angle of the upper edge 3 of the auxiliary blade 2 is R1mm. The R angle of the upper edge 3 of the main blade 1 is R2mm, and the R angle of the upper edge 3 of the auxiliary blade 2 is R1.5mm. The R angle of the upper edge 3 of the main blade 1 is R2mm, and the R angle of the upper edge 3 of the auxiliary blade 2 is R1mm, and so on. Of course, it is foreseeable that the use of other different R angle sizes is also feasible. For example Figure 2 As shown in , the opening angle at the edge 3 of the auxiliary blade 2 should be greater than that of the main blade 1, so as to prevent the phenomenon of rubbing or scraping the board after the auxiliary blade 2 is adjusted out.

[0021] Regarding the combined installation form between the main blade 1 and the auxiliary blade 2 of the utility model, a central groove 4 extending along the length direction of the main blade 1 is provided in the middle of one side of the main blade 1, the width of the central groove 4 is adapted to the width of the auxiliary blade 2, and the auxiliary blade 2 is clamped in the central groove 4 to form a sliding fit, and the auxiliary blade 2 can be extended or retracted relative to the main blade 1 by adjusting the position of the auxiliary blade 2 on the central groove 4. Of course, since the auxiliary blade 2 is thinner than the main blade 1, in order to further ensure its strength and service life, the bottom surface of the auxiliary blade 2 of the utility model is sprayed with a layer of hardened film.

[0022] As for the fastening form of the main blade 1 and the auxiliary blade 2, as Figure 2 and 3, which are schematic diagrams of the structure in the assembled state and the separated state, respectively. A mounting circular hole 5 is provided in the middle of the central groove 4, and a mounting strip hole 6 extending along the length direction of the secondary blade 2 is provided in the middle of the secondary blade 2. The primary blade 1 and the secondary blade 2 are fixed to the blade holder by mounting screws passing through the mounting strip hole 6 and the mounting circular hole 5 in sequence. When installing, tightening the mounting screws can complete the installation.

[0023] On this basis, the utility model can also compound a layer of high-hardness alloy hardened ring 7 on the inner edge of the mounting circular hole 5 of the main blade 1 and the inner edge of the mounting bar hole 6 of the auxiliary blade 2. The composite form generally adopts high-frequency welding, and the addition of the hardened ring 7 can further improve the risk of deformation prevention.

Claims

1. An adjustable edge-sealing scraper blade, characterized in that: The invention comprises a main blade (1) and an auxiliary blade (2), wherein both ends of the main blade (1) and the auxiliary blade (2) are provided with a cutting edge (3), and the R angle of the cutting edge (3) on the main blade (1) is greater than the R angle of the cutting edge (3) on the auxiliary blade (2); a central groove (4) extending along the length direction of the main blade (1) is provided in the middle of one side of the main blade (1), the width of the central groove (4) is matched with the width of the auxiliary blade (2), and the auxiliary blade (2) is clamped in the central groove (4) to form a sliding fit; a mounting circular hole (5) is provided in the middle of the central groove (4), and a mounting strip hole (6) extending along the length direction of the auxiliary blade (2) is provided in the middle of the auxiliary blade (2); the main blade (1) and the auxiliary blade (2) are fixed to the blade seat by mounting screws which pass through the mounting strip hole (6) and the mounting circular hole (5) in sequence.

2. The adjustable edge-sealing scraper blade according to claim 1, characterized in that: The R angle of the upper edge portion (3) of the main blade (1) is R1.5 mm, and the R angle of the upper edge portion (3) of the auxiliary blade (2) is R1 mm.

3. The adjustable edge-sealing scraper blade according to claim 1, characterized in that: The R angle of the upper edge portion (3) of the main blade (1) is R2 mm, and the R angle of the upper edge portion (3) of the auxiliary blade (2) is R1.5 mm.

4. The adjustable edge-sealing scraper blade according to claim 1, characterized in that: The R angle of the upper edge portion (3) of the main blade (1) is R2 mm, and the R angle of the upper edge portion (3) of the auxiliary blade (2) is R1 mm.

5. The adjustable edge banding scraper blade according to any one of claims 2 to 4, characterized in that: The inner edge of the mounting circular hole (5) of the main blade (1) and the inner edge of the mounting strip hole (6) of the auxiliary blade (2) are both compounded with a hardened ring (7) made of high-hardness alloy.

6. The adjustable edge-sealing scraper blade according to claim 5, characterized in that: The blades (3) on the main blade (1) and the auxiliary blade (2) are both diamond blades, and the diamond blades are composed of diamond sheets (8) welded to base bodies at both ends of the main blade (1) and the auxiliary blade (2).

7. The adjustable edge-sealing scraper blade according to claim 6, characterized in that: The bottom surface of the auxiliary blade (2) is sprayed with a layer of hardened film.

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