Motor shaft universal type edge sealing band trimming knife

Abstract

The utility model relates to the field of woodworking tools. The motor shaft universal type edge sealing band trimming knife comprises a disc-shaped knife body, and a mounting hole is formed in the middle of the knife body. A plurality of tool bits which are distributed around the center of the tool body in a central symmetry mode are arranged on the peripheral side of the tool body, and cutting edges are welded to shoulders at the ends of the tool bits. The device further comprises a diameter distribution shaft sleeve arranged in the mounting hole, the outer edge of the diameter distribution shaft sleeve is matched with the mounting hole, and an inner hole of the diameter distribution shaft sleeve forms a shaft diameter correction hole. The problem that an inner hole of a traditional trimming cutter cannot be matched with motor shafts with different shaft diameters is solved, and application is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of woodworking knives, in particular to an edge band trimming knife. Background Art

[0002] The edge banding trimming knife is a general term for a type of cutting tools used in the edge banding machine of panel furniture. In accordance with the trimming order of the edge banding, it generally includes: rough trimming knife, fine trimming knife, tracking profiling knife and flat scraper blade, etc. The function of the rough trimming knife is to perform preliminary trimming on the part of the edge banding pasted on the edge of the board that protrudes from the board, so that the width of the edge banding and the thickness of the board are aligned; the function of the fine trimming knife is mainly to use the arc cutting edge to chamfer the upper and lower edges of the edge banding, so as to achieve a smooth and full visual and tactile feeling.

[0003] In recent years, with the rise of woodworking panel furniture manufacturing equipment in my country, many edge banding machine brands and manufacturers have appeared on the market. Due to the lack of unified standards, the motor shaft diameters that drive the trimming knives in various edge banding machines are somewhat different. Some use 16 axes, some use 20 axes, and some brands even use more rare shaft diameter models (such as Figure 1 As shown in the figure, it is the edge banding knife with a fixed aperture at present). As for the downstream supporting manufacturers of equipment that mainly produce edge banding knives (that is, edge banding and trimming knives), they can only completely compare the shaft diameter model of the equipment manufacturer for processing and production scheduling in the traditional form. Since the models of different equipment manufacturers are not universal, they cannot be directly replaced; in the long-term production process, it is inevitable that there will be a certain amount of tool waste. At the same time, with the rise of diamond tools in recent years, due to their own high value and high production costs, this undoubtedly increases the economic burden of tool companies. At the same time, when replacing tools, many end customers are not clear about the specific parameters of the tools, and the tool apertures they order or purchase do not match the motor shaft diameter, which causes a lot of inconvenience and waste. Summary of the invention

[0004] The utility model aims to provide a universal edge band trimming knife for motor shafts which can adapt to different shaft diameters.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is: a motor shaft universal edge banding trimming knife, comprising a disc-shaped knife body, a mounting hole is arranged in the middle of the knife body; a plurality of knife heads are arranged on the peripheral side of the knife body and are centrally symmetrically distributed around the center of the knife body, and a blade is welded on the shoulder of the end of the knife head;

[0006] It also includes a diameter matching sleeve arranged in the mounting hole, the outer edge of the diameter matching sleeve matches the mounting hole, and the inner hole of the diameter matching sleeve constitutes a shaft diameter correction hole;

[0007] A plurality of slots are evenly arranged in an annular shape on the cutter body around both ends of the mounting hole, and a first connecting hole is arranged at the slot that passes through both sides of the cutter body; the calibrating sleeve is composed of two front and rear sections, and a plurality of blocks are arranged at the outer ends of the front and rear sections of the calibrating sleeve, and the positions and numbers of the blocks correspond to the slots, and the shapes and sizes of the blocks match the slots; a second connecting hole is arranged on the block, and the first connecting hole and the second connecting hole are opposite to each other; the two sections of the calibrating sleeve are fastened to the cutter body by tension screws passing through the first connecting hole and the second connecting hole.

[0008] Preferably, the clamping groove on the cutter body and the clamping block on the matching sleeve are both trapezoidal.

[0009] Preferably, the number of the card slots is four.

[0010] Preferably, the first connecting hole and the second connecting hole are straight holes.

[0011] Preferably, the first connecting hole and the second connecting hole are oblique holes.

[0012] Preferably, it also includes an outer pressure ring, which is sleeved on the motor shaft at both ends of the matching sleeve.

[0013] Preferably, the number of the cutter heads is four or six.

[0014] Preferably, the blade is a carbide blade or a diamond blade.

[0015] Preferably, the diameter of the mounting hole is φ20 mm, and the inner hole diameter of the matching sleeve is φ16 mm.

[0016] The beneficial effects of the utility model are mainly reflected in that it solves the problem that the inner hole of the traditional trimming cutter cannot be compatible with motor shafts of different shaft diameters, and the application is more convenient. Specifically, during the use of the utility model, when the motor shaft is 20mm, the mounting hole can be directly used to connect with the motor shaft; when the motor shaft is 16mm, a matching sleeve can be added, and the matching sleeve can be used to connect with the motor shaft, ensuring normal use under the two most common shaft diameters. Of course, other types of matching sleeves can also be provided to achieve universal compatibility with motors of different shaft diameters. At the same time, the utility model realizes the key connection of the matching sleeve at the mounting hole of the cutter body through the cooperation of the card slot and the card block, which can effectively reduce the shear stress of the tension screw and ensure the stability and reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an existing edge banding trimming knife;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model when the matching shaft sleeve is not installed;

[0020] Figure 4 It is a side view of the matching sleeve;

[0021] Figure 5 is a structural schematic diagram of the card slot and the first connecting hole;

[0022] Figure 6 A schematic diagram of a structure of a preferred real-time mode of the card slot and the first connecting hole;

[0023] Figure 7 It is a schematic diagram of the side structure of the outer pressure ring;

[0024] Figure 8 for Figure 2 AA view of the structure shown in when connected to the motor shaft. DETAILED DESCRIPTION

[0025] like Figure 1-8 A motor shaft universal edge banding trimming knife is shown, such as Figure 1 As shown, compared with the existing cutting tools, the utility model is similar in that it also includes a disc-shaped cutting tool body 1, and a mounting hole 2 is provided in the middle of the cutting tool body 1, and the mounting hole 2 is used to connect with the motor shaft. The motor shaft sizes of the two most common edge banding cutters on the market are 16mm and 20mm respectively. In the prior art, the connection with the motor shaft is achieved by machining a mounting hole 2 of corresponding size on the cutting tool body 1.

[0026] The knife body 1 is provided with a plurality of knife heads 3 symmetrically distributed around the center of the knife body 1 on the peripheral side thereof, the knife body 1 and the knife heads 3 are formed by milling of a disc-shaped blank, and a blade 4 is welded on the shoulder at the end of the knife head 3 by high-frequency welding. The number of the knife heads 3 is usually 4 or 6, thus forming a four-blade knife and a six-blade knife, and the specific material of the blade 4 can be a carbide blade or a diamond blade.

[0027] Compared with the traditional trimming knife, the biggest difference of the present invention is that it also includes a matching sleeve 5 arranged in the mounting hole 2, through which the matching sleeve 5 can realize the adaptation of motor shafts with different shaft diameters, especially the adaptation of motor shafts with 16mm and 20mm. The outer edge of the matching sleeve 5 matches the mounting hole 2, that is, its outer diameter is the same as the inner diameter of the mounting hole 2, or forms an interference fit with a low amount of interference, and the inner hole of the matching sleeve 5 constitutes a shaft diameter correction hole. In other words, the present invention can adapt to the connection of two motors with different shaft diameters when equipped with a matching sleeve 5. Here, taking the mounting hole 2 with a diameter of φ20mm and the inner hole diameter of the matching sleeve 5 with a diameter of φ16mm as an example, it can adapt to motor shafts with φ20mm and φ16mm.

[0028] Since the utility model is in a high-speed rotation state during operation, in order to ensure the stability of the installation of the diameter-matching sleeve 5, combined with Figure 2 and 3 As shown in the figure, the blade body 1 of the utility model is evenly provided with a plurality of slots 6 in an annular shape around both ends of the mounting hole 2. The number of the slots 6 in the figure is four, but it can be more or less. After a large number of tests and comprehensive consideration of factors such as dynamic balance and processability, four slots 6 are the best. The slots 6 are provided with a first connecting hole 7 that runs through both sides of the blade body 1.

[0029] In order to facilitate the installation of the diameter matching sleeve 5, the diameter matching sleeve 5 is composed of two sections, front and rear sections, and the outer ends of the front and rear sections of the diameter matching sleeve 5 are provided with a plurality of blocks 8, the position and number of the blocks 8 correspond to the slots 6, and the shape and size of the blocks 8 match the slots 6. As shown in the figure, when the number of the slots 6 is 4, the number of the blocks 8 is also 4. The slots 6 on the cutter body 1 and the blocks 8 on the diameter matching sleeve 5 can be in the shape of a triangle, a trapezoid, a square, etc., as shown in the figure, that is, a trapezoid. The block 8 is provided with a second connecting hole 9, and the first connecting hole 7 and the second connecting hole 9 are opposite.

[0030] When installing, combine Figure 5 , 6 The two sections of the matching sleeve 5 shown in 8 are fastened to the cutter body 1 by the tension screws passing through the first connecting hole 7 and the second connecting hole 9. The utility model realizes the key connection of the matching sleeve 5 at the mounting hole 2 of the cutter body 1 through the cooperation of the card slot 5 and the card block 8, which can effectively reduce the shear stress of the tension screw and ensure the stability and reliability of the connection. The first connecting hole 7 and the second connecting hole 9 are straight holes, which is the most convenient way to process. However, it is also possible that the first connecting hole 7 and the second connecting hole 9 are inclined holes. In this case, the shear stress of the tension screw can be further reduced to ensure the stability of the installation.

[0031] Since the utility model needs to trim the edge band on the plate, more impurities will be generated in its working environment. On this basis, a better approach can also be, for example, Figure 7 and 8 As shown, it also includes an outer pressure ring 10, which is sleeved on the motor shaft at both ends of the matching shaft sleeve 5.

Claims

1. A motor shaft universal edge band trimming knife, comprising a disc-shaped knife body (1), wherein a mounting hole (2) is arranged in the middle of the knife body (1); a plurality of knife heads (3) are arranged on the peripheral side of the knife body (1) and are centrally symmetrically distributed around the center of the knife body (1); a knife edge (4) is welded on the shoulder of the end of the knife head (3); Features: It also includes a diameter matching sleeve (5) arranged in the mounting hole (2), the outer edge of the diameter matching sleeve (5) matches the mounting hole (2), and the inner hole of the diameter matching sleeve (5) constitutes a shaft diameter correction hole; A plurality of slots (6) are evenly arranged in an annular shape on the knife body (1) around both ends of the mounting hole (2), and a first connecting hole (7) is arranged at the slot (6) and passes through both sides of the knife body (1); the matching sleeve (5) is composed of two front and rear sections, and a plurality of blocks (8) are arranged at the outer ends of the front and rear sections of the matching sleeve (5), and the positions and numbers of the blocks (8) correspond to the slots (6), and the shapes and sizes of the blocks (8) match the slots (6); a second connecting hole (9) is arranged on the block (8), and the first connecting hole (7) and the second connecting hole (9) are opposite to each other; the two sections of the matching sleeve (5) are fastened to the knife body (1) by means of tension screws passing through the first connecting hole (7) and the second connecting hole (9).

2. The motor shaft universal edge banding trimming knife according to claim 1, characterized in that: The clamping groove (6) on the cutter body (1) and the clamping block (8) on the matching shaft sleeve (5) are both trapezoidal.

3. The motor shaft universal edge banding trimming knife according to claim 2, characterized in that: The number of the card slots (6) is four.

4. The motor shaft universal edge banding trimming knife according to claim 3, characterized in that: The first connecting hole (7) and the second connecting hole (9) are straight holes.

5. The motor shaft universal edge banding trimming knife according to claim 3, characterized in that: The first connecting hole (7) and the second connecting hole (9) are inclined holes.

6. The motor shaft universal edge banding trimming knife according to claim 4 or 5, characterized in that: It also includes an outer pressure ring (10), which is sleeved on the motor shaft at both ends of the matching shaft sleeve (5).

7. The motor shaft universal edge banding trimming knife according to claim 6, characterized in that: The number of the cutter heads (3) is four or six.

8. The motor shaft universal edge banding trimming knife according to claim 7, characterized in that: The blade (4) is a hard alloy blade or a diamond blade.

9. The motor shaft universal edge banding trimming knife according to claim 8, characterized in that: The diameter of the mounting hole (2) is φ20 mm, and the inner hole diameter of the matching sleeve (5) is φ16 mm.

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