Building plate cutting device

Abstract

The utility model discloses a building plate cutting device, which belongs to the technical field of building material processing, and comprises a hand saw shell, the rear side of the hand saw shell is fixedly connected with a grip, and the front side of the inner side of the hand saw shell is fixedly connected with a servo motor; the output end of the servo motor is movably connected with a convenient dismounting and mounting mechanism, the inner side of the convenient dismounting and mounting mechanism is movably connected with a circular saw blade body, and the front side of the inner side of the hand saw shell is movably connected with a stopping mechanism. According to the hand saw, the circular saw blade body can be rapidly disassembled and assembled directly through the friction wheel and the assistance of the independent threaded fastener, so that the circular saw blade body can be conveniently replaced without screwing a plurality of fasteners, cutting can be smoothly carried out when a constructor holds the grip to carry out cutting operation, and the labor intensity of the constructor is reduced. When a constructor is tired or the hand saw breaks away from the hand saw and falls off due to improper operation, the circular saw blade body of the hand saw can be stopped in time.

Description

Technical Field

[0001] This utility model relates to the field of building material processing technology, and in particular to a cutting device for building panels. Background Technology

[0002] The continuous development of the construction industry has led to an increasing demand for boards of various specifications and shapes. In traditional construction, large building boards need to be cut into different sizes and shapes to meet the requirements of different building structures and designs. For example, when building a house, different sizes of boards may be used for walls, floors, ceilings and other parts, which requires precise cutting and processing of building boards.

[0003] In the existing technology, the use of hand saws for cutting plates for a long time will cause the installation of the saw blade in the hand saw frame to become loose, which will directly cause the saw blade to bend during operation, and in severe cases, it will break directly. This will not only affect the work, but also cause losses due to the damage to the saw blade, and the broken saw blade will cut the workers.

[0004] To address the aforementioned issues, an existing patent (publication number: CN218192923U) proposes a building panel cutting device. This device features a water tank fixedly mounted in the middle of a hand saw frame. One end of the hand saw frame has a locking groove that movably connects to one end of the saw blade. The other end of the hand saw frame has a handle. An arc-shaped protective plate is positioned on the side of the hand saw frame closest to the handle, with the center of the plate facing the handle. A storage groove is located on the side of the handle furthest from the hand saw frame. A mounting frame, U-shaped, is fitted onto the lower part of the handle. The end of the mounting frame closest to the hand saw frame is rotatably connected to the main body of the hand saw frame, while the other end slides within the storage groove. A connecting groove is located below the rotating shaft of the mounting frame, movably connecting to the other end of the saw blade. The advantages of this invention are: simple structure, convenient use, and improved safety during operation.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, prolonged use of hand saws can lead to wear and tear on the saw blade, and the saw blade also needs to be replaced when cutting materials of different hardness. Existing saw blades are often installed using multiple fasteners, making them difficult to install and remove conveniently. Furthermore, when construction workers are engaged in cutting operations for extended periods, fatigue can easily cause the hand saw to fall to the ground without being turned off, resulting in the rotating saw blade pointing downwards and posing a significant safety hazard.

[0006] Therefore, a cutting device for building panels is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a building board cutting device that can solve the problems of the difficulty in replacing the saw blade of existing hand saws and the high safety risk of the hand saw falling when the saw blade is rotating.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a building board cutting device, comprising a hand saw housing, a handle fixedly connected to the rear side of the hand saw housing, a servo motor fixedly connected to the front side of the inner side of the hand saw housing, a convenient disassembly and assembly mechanism movably connected to the output end of the servo motor, a circular saw blade body movably connected to the inner side of the convenient disassembly and assembly mechanism, and a stop mechanism movably connected to the front side of the inner side of the hand saw housing.

[0009] The convenient assembly / disassembly mechanism includes a fixed plate, an electronic telescopic rod, a pressing block, a hollow sliding column, a connecting plate, a friction wheel, an extension rod, a pressure spring, a threaded rod, and threaded fasteners. The fixed plate is fixedly connected to the output end of the servo motor and is located inside the hand saw housing. The hollow sliding column is fixedly connected to the front side of the fixed plate. The connecting plate is slidably connected to the outside of the hollow sliding column and is evenly distributed around the perimeter of the hollow sliding column. The electronic telescopic rod is fixedly connected to the front side of the fixed plate and is located inside the hollow sliding column. On one side, the extrusion block is fixedly connected to the front side of the electronic telescopic rod, the friction wheel is rotatably connected to the end of the connecting plate away from the hollow sliding column, the extension rod is fixedly connected to both sides of the connecting plate, and the connecting plate is located outside the hollow sliding column, the pressure spring is fixedly connected to the corresponding side of the hollow sliding column and the extension rod, the circular saw blade body is sleeved on the outside of the hollow sliding column, and the inner side of the circular saw blade body is in contact with the friction wheel, the threaded rod is fixedly connected to the front side of the hollow sliding column, and the threaded fastener is threadedly connected to the outside of the threaded rod.

[0010] Preferably, a pressure plate is slidably connected to the front side of the grip, and a pull rod is fixedly connected to the left side of the pressure plate.

[0011] Preferably, a support rod is fixedly connected to the rear side of the left side of the pull rod, and sliders are rotatably connected to both sides of the support rod. A connecting rod is slidably connected to the opposite side of the two sliders, and the ends of the two connecting rods away from the servo motor are rotatably connected to the front side of the handle.

[0012] Preferably, each of the connecting rods has a clamping block fixedly connected to the end near the servo motor, and the clamping blocks are respectively located on both sides of the output end of the servo motor.

[0013] Preferably, a collar is movably connected to the rear side of the circular saw blade body, and a clamping block is fixedly connected to the front side of the collar.

[0014] Preferably, the sealing ring is inserted and connected to the outside of the clamping block.

[0015] Preferably, a tension spring is fixedly connected to the side of the pressure plate and the corresponding side of the grip.

[0016] Preferably, the inner side of both the support rod and the connecting rod away from the clamping block is fixedly connected to an elastic column.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application, by setting up a convenient disassembly and assembly mechanism, allows for quick disassembly and assembly of the circular saw blade body via the friction wheel and with the assistance of individual threaded fasteners. This facilitates easy replacement without the need to tighten multiple fasteners. After loosening the threaded fasteners and removing it from the threaded rod, the electronic telescopic rod retracts, causing the pressing block to slide downwards and no longer pressing on the connecting plate inside the hollow sliding column. This causes the pressure spring on the connecting plate to quickly rebound, preventing the friction wheel from clamping and supporting the circular saw blade body. The center of the circular saw blade body is hollowed out. After removing the circular saw blade body, it can be replaced with an unworn or other model of circular saw. The saw blade body is clamped to the outside of the hollow sliding column. The electronic telescopic rod drives the extrusion block forward, which can simultaneously extrude all the connecting plates, causing them to press outward and tighten the pressure spring. This achieves the effect of the friction wheel supporting the circular saw blade body outward. Then, the threaded fastener is tightened along the threaded rod to clamp the circular saw blade body. Then, the fixed plate supporting the hollow sliding column is rotated by the servo motor to perform the cutting operation. The friction wheel can rotate to a certain extent during the cutting operation, which can not only enhance the contact friction and better clamp, but also continuously adjust the force point to reduce wear. In addition, it provides double protection for the cutting operation in conjunction with the fastener.

[0019] 2. This application incorporates a stop mechanism that allows for smooth cutting while the operator holds the handle. If the operator becomes fatigued or mishandles the saw and it falls, the mechanism promptly stops the circular saw blade, preventing injury or damage to the saw from the ground. By pressing down on the pressure plate while holding the handle, the pressure plate drives the pull rod downwards, which in turn drives the support rod downwards along the slider track. This causes the two connecting rods to rotate simultaneously in opposite directions, releasing the clamping block's restriction on the servo motor's output shaft, allowing for cutting. If the saw falls, the pressure plate rebounds, causing the connecting rod and support rod to rotate rapidly. This, in turn, causes the clamping block to brake the servo motor's output shaft, preventing the circular saw blade from falling and causing injury. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the building panel cutting device of this utility model;

[0021] Figure 2This is a partial structural diagram of the hand saw of this utility model;

[0022] Figure 3 This is an overall structural diagram of the convenient assembly and disassembly mechanism of this utility model;

[0023] Figure 4 This is an overall structural diagram of the stopping mechanism of this utility model;

[0024] Figure 5 This is an overall structural diagram of the ring of this utility model.

[0025] In the diagram: 1. Hand saw casing; 2. Handle; 3. Servo motor; 4. Easy disassembly and assembly mechanism; 41. Fixed plate; 42. Electronic telescopic rod; 43. Pressing block; 44. Hollowed-out sliding column; 45. Linkage plate; 46. Friction wheel; 47. Extension rod; 48. Pressure spring; 49. Threaded rod; 410. Threaded fastener; 5. Circular saw blade body; 6. Stopping mechanism; 61. Pressure plate; 62. Pull rod; 63. Support rod; 64. Slider; 65. Linkage rod; 66. Clamping block; 7. Ring; 8. Clamping block; 9. Sealing ring; 10. Tension spring; 11. Elastic column. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A building board cutting device includes a hand saw housing 1, a handle 2 fixedly connected to the rear side of the hand saw housing 1, a servo motor 3 fixedly connected to the front side of the inner side of the hand saw housing 1, a convenient disassembly and assembly mechanism 4 movably connected to the output end of the servo motor 3, a circular saw blade body 5 movably connected to the inner side of the convenient disassembly and assembly mechanism 4, and a stop mechanism 6 movably connected to the front side of the inner side of the hand saw housing 1.

[0029] The convenient assembly / disassembly mechanism 4 includes a fixed plate 41, an electronic telescopic rod 42, a pressing block 43, a hollow sliding column 44, a connecting plate 45, a friction wheel 46, an extension rod 47, a pressure spring 48, a threaded rod 49, and a threaded fastener 410. The fixed plate 41 is fixedly connected to the output end of the servo motor 3 and is located inside the hand saw housing 1. The hollow sliding column 44 is fixedly connected to the front side of the fixed plate 41. The connecting plate 45 is slidably connected to the outside of the hollow sliding column 44 and is evenly distributed around the hollow sliding column 44. The electronic telescopic rod 42 is fixedly connected to the front side of the fixed plate 41 and is located inside the hollow sliding column 44. Inside the moving column 44, the pressing block 43 is fixedly connected to the front side of the electronic telescopic rod 42. The friction wheel 46 is rotatably connected to the end of the connecting plate 45 away from the hollow sliding column 44. The extension rod 47 is fixedly connected to both sides of the connecting plate 45, and the connecting plate 45 is located outside the hollow sliding column 44. The pressure spring 48 is fixedly connected to the corresponding side of the hollow sliding column 44 and the extension rod 47. The circular saw blade body 5 is sleeved on the outside of the hollow sliding column 44, and the inner side of the circular saw blade body 5 is in contact with the friction wheel 46. The threaded rod 49 is fixedly connected to the front side of the hollow sliding column 44. The threaded fastener 410 is threadedly connected to the outside of the threaded rod 49.

[0030] In this embodiment: after loosening the threaded fastener 410 and removing it from the threaded rod 49, the electronic telescopic rod 42 retracts, causing the pressing block 43 to slide downwards and no longer press the connecting plate 45 inside the hollow sliding column 44. This causes the connecting plate 45 to be quickly rebounded by the taut pressure spring 48, causing the friction wheel 46 to no longer clamp and support the circular saw blade body 5. The center of the circular saw blade body 5 is hollow. After removing the circular saw blade body 5, an unworn or other type of circular saw blade body 5 is replaced. By clamping it on the outside of the hollow sliding column 44, the pressing block 43 can be driven forward by the electronic telescopic rod 42. When all the connecting plates 45 are pressed, they simultaneously move outward and press the pressure spring 48, so that the friction wheel 46 supports the circular saw blade body 5 outward. Then, the threaded fastener 410 is tightened along the threaded rod 49 to clamp the circular saw blade body 5. Then, the fixed plate 41 supporting the hollow sliding column 44 is rotated by the servo motor 3 to perform the cutting operation. The friction wheel 46 can rotate to a certain extent when the circular saw blade body 5 rotates for cutting, which can not only enhance the contact friction for better clamping, but also continuously adjust the force point to reduce wear. In addition, it works with the fastener to provide double protection for the cutting operation.

[0031] Specifically, such as Figure 1 , Figure 2 , Figure 4 As shown, a pressure plate 61 is slidably connected to the front side of the grip 2, and a pull rod 62 is fixedly connected to the left side of the pressure plate 61.

[0032] Specifically, such as Figure 1 , Figure 2 , Figure 4 As shown, a support rod 63 is fixedly connected to the rear side of the left side of the pull rod 62. Slider 64 is rotatably connected to both sides of the support rod 63. A connecting rod 65 is slidably connected to the opposite side of the two sliders 64. The ends of the two connecting rods 65 away from the servo motor 3 are rotatably connected to the front side of the grip 2.

[0033] Specifically, such as Figure 1 , Figure 2 , Figure 4 As shown, each end of the linkage 65 near the servo motor 3 is fixedly connected to a clamp 66, and the clamp 66 is respectively set on both sides of the output end of the servo motor 3.

[0034] In this embodiment: when gripping the handle 2, the pressure plate 61 on the other side is pressed down so that it is located at the bottom of the handle 2. This causes the pressure plate 61 to drive the pull rod 62 downward and the support rod 63 downward along the track of the slider 64. This causes the two connecting rods 65 to rotate in opposite directions at the same time, releasing the restriction of the clamping block 66 on the output shaft of the servo motor 3, thus enabling cutting operations. If the hand saw is accidentally dropped, the pressure plate 61 will rebound, causing the connecting rod and the support rod 63 to move simultaneously. This causes the connecting rod 65 to rotate rapidly, driving the clamping block 66 to perform an emergency stop and brake on the output shaft of the servo motor 3, thereby preventing the circular saw blade body 5 from falling while rotating and causing personal injury.

[0035] Specifically, such as Figure 1 , Figure 5 As shown, a collar 7 is movably connected to the rear side of the circular saw blade body 5, and a clamping block 8 is fixedly connected to the front side of the collar 7.

[0036] Specifically, such as Figure 1 , Figure 5 As shown, the sealing ring 9 is inserted and connected to the outside of the clamping block 8.

[0037] In this embodiment: by securing the sealing ring 9 to the collar 7 with the clamping block 8, the sealing ring 9 and the collar 7 can be easily removed after the circular saw blade body 5 is installed, preventing the circular saw blade body 5 from scratching the operator during the installation process.

[0038] Specifically, such as Figure 1 , Figure 2 As shown, a tension spring 10 is fixedly connected to the side of the pressure plate 61 and the grip 2 respectively.

[0039] Specifically, such as Figure 4 As shown, elastic columns 11 are fixedly connected to the inner side of the strut 63 and the connecting rod 65 away from the clamping block 66.

[0040] In this embodiment: by setting tension spring 10 and elastic column 11, the pressure plate 61 and support rod 63 can rebound faster when the hand saw falls, thereby limiting the output of servo motor 3.

[0041] Working principle: When the circular saw blade body 5 needs to be replaced, the screw fastener 410 is loosened to remove it from the threaded rod 49. The electronic telescopic rod 42 then retracts, causing the pressing block 43 to slide downwards and no longer press against the connecting plate 45 inside the hollow sliding column 44. This causes the pressure spring 48 on the connecting plate 45 to quickly rebound, preventing the friction wheel 46 from clamping and supporting the circular saw blade body 5. The circular saw blade body 5 has a hollow center. After removing the circular saw blade body 5, an unworn or other model circular saw blade body 5 is replaced. By clamping it on the outside of the hollow sliding column 44, the electronic telescopic rod 42 drives the pressing block 43 forward, simultaneously pressing all the connecting plates 45 outwards and clamping the pressure spring 48. This achieves the effect of the friction wheel 46 supporting the circular saw blade body 5 outwards. Finally, the screw fastener is tightened along the threaded rod 49. After component 410 is used, the circular saw blade body 5 is clamped. Then, the fixed plate 41 supporting the hollow sliding column 44 is rotated by the servo motor 3 to perform the cutting operation. The friction wheel 46 can rotate to a certain extent when the circular saw blade body 5 is rotating for cutting. During the cutting operation, when the handle 2 is held, the pressure plate 61 on the other side is pressed down so that it is located at the bottom of the handle 2. This causes the pressure plate 61 to drive the pull rod 62 downward and drive the support rod 63 downward along the track of the slider 64. This causes the two connecting rods 65 to rotate in opposite directions at the same time, releasing the restriction of the clamping block 66 on the output shaft of the servo motor 3, thus enabling the cutting operation. If the hand saw is lost and falls, the pressure plate 61 will rebound, causing the connecting rod and the support rod 63 to move simultaneously. This causes the connecting rod 65 to rotate quickly, driving the clamping block 66 to perform an emergency stop and brake on the output shaft of the servo motor 3.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A board cutting device for construction, comprising a hand saw housing (1), characterized in that: A handle (2) is fixedly connected to the rear side of the hand saw housing (1), a servo motor (3) is fixedly connected to the front side of the inner side of the hand saw housing (1), a convenient disassembly and assembly mechanism (4) is movably connected to the output end of the servo motor (3), a circular saw blade body (5) is movably connected to the inner side of the convenient disassembly and assembly mechanism (4), and a stop mechanism (6) is movably connected to the front side of the inner side of the hand saw housing (1). The convenient disassembly and assembly mechanism (4) includes a fixed plate (41), an electronic telescopic rod (42), an extrusion block (43), a hollow sliding column (44), a connecting plate (45), a friction wheel (46), an extension rod (47), a pressure spring (48), a threaded rod (49), and a threaded fastener (410). The fixed plate (41) is fixedly connected to the output end of the servo motor (3), and the fixed plate (41) is located inside the hand saw housing (1). The hollow sliding column (44) is fixedly connected to the front side of the fixed plate (41). The connecting plate (45) is slidably connected to the outside of the hollow sliding column (44) and is evenly distributed around the hollow sliding column (44). The electronic telescopic rod (42) is fixedly connected to the front side of the fixed plate (41), and the electronic telescopic rod (42) is located inside the hollow sliding column (410). Inside the moving column (44), the pressing block (43) is fixedly connected to the front side of the electronic telescopic rod (42), the friction wheel (46) is rotatably connected to the end of the connecting plate (45) away from the hollow sliding column (44), the extension rod (47) is fixedly connected to both sides of the connecting plate (45), and the connecting plate (45) is located outside the hollow sliding column (44), the pressure spring (48) is fixedly connected to the side corresponding to the hollow sliding column (44) and the extension rod (47), the circular saw blade body (5) is sleeved on the outside of the hollow sliding column (44), and the inner side of the circular saw blade body (5) is in contact with the friction wheel (46), the threaded rod (49) is fixedly connected to the front side of the hollow sliding column (44), and the threaded fastener (410) is threadedly connected to the outside of the threaded rod (49).

2. The building panel cutting device according to claim 1, characterized in that: A pressure plate (61) is slidably connected to the front side of the grip (2), and a pull rod (62) is fixedly connected to the left side of the pressure plate (61).

3. The building panel cutting device according to claim 2, characterized in that: A support rod (63) is fixedly connected to the rear side of the left side of the pull rod (62). Slider (64) is rotatably connected to both sides of the support rod (63). A connecting rod (65) is slidably connected to the opposite side of the two sliders (64), and the ends of the two connecting rods (65) away from the servo motor (3) are rotatably connected to the front side of the handle (2).

4. The building panel cutting device according to claim 3, characterized in that: Each of the connecting rods (65) is fixedly connected to a clamp (66) at one end near the servo motor (3), and the clamps (66) are respectively set on both sides of the output end of the servo motor (3).

5. The building panel cutting device according to claim 1, characterized in that: A collar (7) is movably connected to the rear side of the circular saw blade body (5), and a clamping block (8) is fixedly connected to the front side of the collar (7).

6. The building panel cutting device according to claim 5, characterized in that: A sealing ring (9) is inserted into the outer side of the clamping block (8).

7. The building panel cutting device according to claim 4, characterized in that: A tension spring (10) is fixedly connected to the corresponding side of the pressure plate (61) and the grip (2).

8. A building panel cutting device according to claim 7, characterized in that: Elastic columns (11) are fixedly connected to the inner side of the support rod (63) and the connecting rod (65) away from the clamping block (66).

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