Saw blade protection structure of composite saw

Abstract

The utility model discloses a saw blade protection structure of a composite saw, which comprises a protection cover, the protection cover is fixedly connected to the lower end face of a movable bedplate of the composite saw, and the protection cover is provided with a first working position and a second working position relative to a saw blade of the composite saw. The protective cover shields the cutting edge at the upper end of the saw blade, and the cutting edge at the lower end of the saw blade extends out of the protective cover; when the protective cover is located at the second working position, the protective cover shields the cutting edge at the lower end of the saw blade, and the cutting edge at the upper end of the saw blade extends out of the protective cover. The protective cover adopts a lengthened design, so that the cutting edge of the saw blade can be effectively protected no matter the composite saw is in a table cutting working state or an inclined cutting working state. When the composite saw is in a beveling working state, the protective cover shields the cutting edge at the upper end of the saw blade; when the combined saw is in a table cutting working state, the protective cover shields the cutting edge at the lower end of the saw blade. The protective cover is convenient to use, safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of electric saw technology, and in particular to a saw blade protection structure for a composite saw. Background Technology

[0002] A compound saw is a common electric cutting tool that can switch between two different working modes: miter sawing and table sawing. Existing compound saws include a saw blade, a movable table (i.e., the table cutting worktable), and a base (i.e., the miter cutting worktable). The specific structure of a compound saw can also be found in a compound saw disclosed in Chinese Utility Model Patent (Authorization Announcement No.: CN211614495U). When the compound saw is in table cutting mode, material is fed and cut from the movable table above the compound saw; when the compound saw is in miter cutting mode, material is fed and cut from the base below the compound saw. According to current safety standards, when electric miter saws and table saws are not in operation, the saw blade cutting edge should be ensured to be concealed and inaccessible. For compound saws, when switching between table cutting and miter cutting modes, it should be ensured that the saw blade cutting edge corresponding to the other working mode is concealed and inaccessible.

[0003] Existing compound saws, when in beveling mode, use a protective cover fixedly connected to the movable table to shield the upper cutting edge of the saw blade. However, when in table cutting mode, the protective cover, being too short, cannot shield the lower cutting edge. Therefore, a separate auxiliary protective cover is needed to ensure the lower cutting edge is not exposed. For example, a compound saw auxiliary protective cover disclosed in Chinese Utility Model Patent (Authorization Announcement No.: CN2411068Y) is composed of a hollow box made of surrounding panels. During operation, the auxiliary protective cover must be in place before table cutting mode can be used; otherwise, the switching task cannot be completed, and operation is impossible. This forces operators to avoid omitting the protective cover installation step during production, truly achieving the purpose of safety protection.

[0004] However, the auxiliary protective cover for a composite saw disclosed in the prior art has the following drawbacks: the auxiliary protective cover is an independent accessory, and the auxiliary protective cover needs to be removed or put on when the composite saw switches working states, which causes inconvenience in use; and once the auxiliary protective cover is damaged or lost, the composite saw will not be able to switch to the table cutting mode, affecting the normal use of the composite saw.

[0005] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0006] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a saw blade protection structure for a composite saw, which includes a protective cover. When the composite saw is in the oblique cutting state, the protective cover blocks the upper edge of the saw blade; when the composite saw is in the table cutting state, the protective cover blocks the lower edge of the saw blade. It is convenient to use and safe and reliable.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A saw blade protection structure for a composite saw, the protection structure including a protective cover, the protective cover being fixedly connected to the lower end face of the movable table of the composite saw, the protective cover having a first working position and a second working position relative to the saw blade of the composite saw, when the protective cover is in the first working position, the protective cover blocks the upper cutting edge of the saw blade, and the lower cutting edge of the saw blade extends out of the protective cover; when the protective cover is in the second working position, the protective cover blocks the lower cutting edge of the saw blade, and the upper cutting edge of the saw blade extends out of the protective cover.

[0009] Furthermore, the upper end of the protective cover is provided with an outwardly bent connecting part, and the protective cover is detachably and fixedly connected to the movable table of the composite saw through the connecting part.

[0010] Furthermore, the protective cover includes a first cover plate and a second cover plate, and an accommodating space for accommodating the saw blade is formed between the first cover plate and the second cover plate.

[0011] Furthermore, the first cover plate has a first limiting part that bends inward on both sides, and the second cover plate has a second limiting part that bends inward on both sides, with the first limiting part and the second limiting part corresponding to each other.

[0012] Furthermore, the second cover plate is provided with a clearance groove for the drive output shaft of the composite saw to pass through, and the clearance groove can make way for the drive output shaft when the protective cover moves up and down relative to the saw blade.

[0013] Furthermore, a sealing strip is provided at the opening of the relief groove, and the sealing strip is detachably connected to the second cover plate.

[0014] Furthermore, the first cover plate is provided with clearance holes, which include waist-shaped holes and circular holes, which are arranged sequentially from top to bottom and are interconnected.

[0015] Furthermore, the lower corner of the protective cover is provided with a notched corner structure.

[0016] With the above structure, the beneficial effects of this utility model are as follows: The saw blade protection structure of the composite saw described in this utility model includes a protective cover, which is fixedly connected to the lower end face of the movable table of the composite saw. The protective cover has a first working position and a second working position relative to the saw blade of the composite saw. When the protective cover is in the first working position, the protective cover blocks the upper cutting edge of the saw blade, and the lower cutting edge of the saw blade extends out of the protective cover. When the protective cover is in the second working position, the protective cover blocks the lower cutting edge of the saw blade, and the upper cutting edge of the saw blade extends out of the protective cover. The protective cover of this utility model adopts an extended design, so that the saw blade cutting edge can be effectively protected whether the composite saw is in table cutting or beveling cutting mode. When the compound saw is in the beveling operation state, i.e., when the protective cover is in the first working position, the protective cover blocks the upper edge of the saw blade; when the compound saw is in the table cutting operation state, i.e., when the protective cover is in the second working position, the protective cover blocks the lower edge of the saw blade. The protective cover of this utility model is convenient to use and safe and reliable. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the composite saw of this utility model in the oblique cutting working state;

[0019] Figure 2 This is a schematic diagram of the composite saw of this utility model in the table cutting working state;

[0020] Figure 3 This is a schematic diagram of the connection between the protective cover and the saw blade of this utility model. Figure 1 (The protective cover is located in the first working position);

[0021] Figure 4 This is a schematic diagram of the connection between the protective cover and the saw blade of this utility model. Figure 2 (The protective cover is located in the second working position);

[0022] Figure 5 This is a schematic diagram showing the connection between the protective cover and the movable platform of this utility model.

[0023] Figure 6 This is an exploded view of the protective cover of this utility model.

[0024] Figures 1 to 6 The label is:

[0025] 1. Protective cover; 11. Connecting part; 12. Accommodation space; 13. Notched corner structure; 2. First cover plate; 21. First limiting part; 22. Clearance hole; 221. Waist-shaped hole; 222. Circular hole; 3. Second cover plate; 31. Second limiting part; 32. Clearance groove; 33. Sealing strip; 100. Compound saw; 101. Movable table; 102. Saw blade; 103. Base. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0027] In the description of this utility model, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms 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.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, the term "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this utility model, unless otherwise explicitly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this invention are for illustrative purposes only and do not represent the only possible implementation.

[0032] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] like Figures 1 to 6 As shown, a saw blade protection structure for a composite saw includes a protective cover 1, which is fixedly connected to the lower end face of the movable table 101 of the composite saw 100. The protective cover 1 has a first working position and a second working position relative to the saw blade 102 of the composite saw 100. When the protective cover 1 is in the first working position, the protective cover 1 blocks the upper cutting edge of the saw blade 102, and the lower cutting edge of the saw blade 102 extends out of the protective cover 1. When the protective cover 1 is in the second working position, the protective cover 1 blocks the lower cutting edge of the saw blade 102, and the upper cutting edge of the saw blade 102 extends out of the protective cover 1.

[0034] Based on the above embodiments, the present invention aims to provide a saw blade protection structure for a composite saw. The protection structure includes a protective cover 1, which is fixedly connected to the lower end face of the movable table 101 of the composite saw 100. The protective cover 1 has a first working position and a second working position relative to the saw blade 102 of the composite saw 100. When the protective cover 1 is in the first working position, it covers the upper cutting edge of the saw blade 102, while the lower cutting edge of the saw blade 102 extends out of the protective cover 1. When the protective cover 1 is in the second working position, it covers the lower cutting edge of the saw blade 102, while the upper cutting edge of the saw blade 102 extends out of the protective cover 1. The protective cover 1 of this invention adopts an extended design, enabling effective protection of the cutting edge of the saw blade 102 regardless of whether the composite saw 100 is in table cutting or bevel cutting mode. Figure 1 and Figure 3 As shown, when the compound saw 100 is in the oblique cutting working state, that is, when the protective cover 1 is in the first working position, the protective cover 1 blocks the cutting edge at the upper end of the saw blade 102. At this time, the movable table 101 is set at an angle relative to the base 103; as Figure 2 and Figure 4 As shown, when the compound saw 100 is in the table cutting working state, that is, when the protective cover 1 is in the second working position, the protective cover 1 blocks the cutting edge at the lower end of the saw blade 102. At this time, the movable table 101 is arranged parallel to the base 103. The protective cover 1 of this utility model is convenient to use and safe and reliable.

[0035] In this embodiment, the protective cover 1 is fixedly connected to the lower end face of the movable table 101 of the composite saw 100. When the installation height of the movable table 101 is adjusted, the protective cover 1 moves up and down with the movable table 101, thereby realizing the synchronous adjustment of the working position of the protective cover 1. When the movable table 101 is locked, the position of the protective cover 1 is locked, making the adjustment of the protective cover 1 simple and easy to operate.

[0036] As another preferred embodiment of this utility model, the upper end of the protective cover 1 is provided with an outwardly bent connecting part 11, and the protective cover 1 is detachably and fixedly connected to the movable table 101 of the composite saw 100 through the connecting part 11. In this embodiment, as... Figure 5 and Figure 6 As shown, the protective cover 1 is detachably connected to the movable platform 101 via the connecting part 11, which facilitates the processing and assembly of the protective cover 1, and also facilitates subsequent maintenance and replacement of the protective cover 1. The connecting part 11 is bent, which increases the stability of the protective cover 1 relative to the movable platform 101 and reduces the shaking of the protective cover 1.

[0037] In another preferred embodiment of this utility model, the protective cover 1 includes a first cover plate 2 and a second cover plate 3, with a receiving space 12 formed between the first cover plate 2 and the second cover plate 3 for accommodating the saw blade 102. The first cover plate 2 has inwardly bent first limiting portions 21 on both sides, and the second cover plate 3 has inwardly bent second limiting portions 31 on both sides, with the first limiting portions 21 and the second limiting portions 31 correspondingly cooperating. In this embodiment, as... Figure 5 and Figure 6 As shown, the first limiting part 21 and the second limiting part 31 cooperate to limit the relative distance between the first cover plate 2 and the second cover plate 3, thereby limiting the width of the accommodating space 12 and reducing the shaking of the first cover plate 2 and the second cover plate 3.

[0038] As another preferred embodiment of this utility model, the second cover plate 3 is provided with a clearance groove 32 for the drive output shaft of the composite saw 100 to pass through, and the clearance groove 32 can make way for the drive output shaft when the protective cover 1 moves up and down relative to the saw blade 102. A sealing strip 33 is provided at the opening of the clearance groove 32, and the sealing strip 33 is detachably connected to the second cover plate 3. In this embodiment, as... Figure 5 and Figure 6 As shown, the clearance groove 32 is provided to allow the output shaft of the driver of the composite saw 100 to pass through the second cover plate 3 and move up and down relative to the second cover plate 3. The sealing strip 33 can prevent the areas on both sides of the clearance groove 32 of the second cover plate 3 from deforming and scratching the saw blade 102, thereby improving the safety of the protective cover 1 and reducing the vibration of the second cover plate 3 when the composite saw 100 is working. In this embodiment, the driver is a motor, the output shaft of the driver is the output shaft of the motor, and the saw blade 102 is fixedly mounted on the output shaft of the motor. When the motor drives its output shaft to rotate, it drives the saw blade 102 to rotate synchronously.

[0039] As another preferred embodiment of this utility model, the first cover plate 2 is provided with a clearance hole 22, the clearance hole 22 including an oblong hole 221 and a circular hole 222, the oblong hole 221 and the circular hole 222 being arranged sequentially from top to bottom and communicating with each other. In this embodiment, as... Figure 6 As shown, the waist-shaped hole 221 is provided for the drive output shaft of the composite saw 100 to pass through and move up and down. The circular hole 222 is provided to facilitate the disassembly of the saw blade 102. The baffle and nut and other components used to fix the saw blade 102 are disassembled and assembled through the circular hole 222.

[0040] As another preferred embodiment of this utility model, a notched corner structure 13 is provided at the lower corner of the protective cover 1. In this embodiment, as... Figure 3 and Figure 5As shown, the notched structure 13 is designed so that when the protective cover 1 is in the first working position, that is, when the compound saw 100 is in the oblique cutting mode, during the cutting operation, as many saw blades 102 as possible will come into contact with the workpiece to be cut, thereby improving the cutting efficiency.

[0041] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A saw blade protection structure for a composite saw, the protection structure comprising a protective cover (1), characterized in that: The protective cover (1) is fixedly connected to the lower end face of the movable table (101) of the composite saw (100). The protective cover (1) has a first working position and a second working position relative to the saw blade (102) of the composite saw (100). When the protective cover (1) is in the first working position, the protective cover (1) covers the upper edge of the saw blade (102), and the lower edge of the saw blade (102) extends out of the protective cover (1). When the protective cover (1) is in the second working position, the protective cover (1) covers the lower edge of the saw blade (102), and the upper edge of the saw blade (102) extends out of the protective cover (1).

2. The saw blade protection structure of a composite saw according to claim 1, characterized in that: The upper end of the protective cover (1) is provided with a connecting part (11) that bends outward, and the protective cover (1) is detachably fixed to the movable table (101) of the composite saw (100) through the connecting part (11).

3. The saw blade protection structure of a composite saw according to claim 1, characterized in that: The protective cover (1) includes a first cover plate (2) and a second cover plate (3), and an accommodating space (12) for accommodating the saw blade (102) is formed between the first cover plate (2) and the second cover plate (3).

4. The saw blade protection structure of a composite saw according to claim 3, characterized in that: The first cover plate (2) has a first limiting part (21) that bends inward on both sides, and the second cover plate (3) has a second limiting part (31) that bends inward on both sides. The first limiting part (21) and the second limiting part (31) cooperate with each other.

5. The saw blade protection structure of a composite saw according to claim 3, characterized in that: The second cover plate (3) has a clearance groove (32) through which the drive output shaft of the composite saw (100) passes, and the clearance groove (32) can make way for the drive output shaft when the protective cover (1) moves up and down relative to the saw blade (102).

6. The saw blade protection structure of a composite saw according to claim 5, characterized in that: A sealing strip (33) is provided at the opening of the relief groove (32), and the sealing strip (33) is detachably connected to the second cover plate (3).

7. The saw blade protection structure of a composite saw according to claim 3, characterized in that: The first cover plate (2) is provided with a clearance hole (22), which includes a waist-shaped hole (221) and a circular hole (222). The waist-shaped hole (221) and the circular hole (222) are arranged sequentially from top to bottom and are interconnected.

8. The saw blade protection structure of a composite saw according to claim 1, characterized in that: The protective cover (1) has a notched corner structure (13) at the lower corner.

Images