Hand-held cold cutting saw

Abstract

The utility model discloses a hand-held cold cutting saw relates to cold cutting saw technical field, including mounting shell, connect to the machine body of mounting shell one side and arrange in the cutting saw subassembly in the mounting shell, the top of mounting shell inner wall is fixedly equipped with the electric push rod, the drive end of electric push rod is fixedly equipped with the mounting seat, and the mounting seat is equipped with the electric push rod. A sliding piece is slidably arranged in the mounting seat, a connecting plate is fixedly mounted at the bottom of the sliding piece, a brush head is fixedly mounted at the bottom of the connecting plate, and a servo motor is fixedly mounted at the top of the mounting seat; according to the utility model, the saw blade is adjusted to a slow rotating speed, then the electric push rod is driven to enable the brush head to descend to be in contact with the saw blade, the servo motor is started to enable the half gear to rotate, and the half gear drives the sliding piece to reciprocate in the vertical direction of the saw blade; therefore, the brush head is used for removing chips which are high in viscidity or embedded into tooth seams of the saw blade deeply on the saw blade.

Description

Technical Field

[0001] The utility model relates to the technical field of cold cutting saws, in particular to a portable cold cutting saw. Background Art

[0002] A cold cutting saw is a device for cutting manufactured materials, such as various steels, aluminum materials, or plastic pipes. Existing cold cutting saws are usually composed of a base, a rotating arm, a motor, a saw blade, a controller, and a profile clamping mechanism. One end of the rotating arm is rotatably connected to the base, the motor is fixed on the rotating arm, the saw blade is connected to the output shaft of the motor, and the controller is installed in a groove on the lower end surface of the base. When in use, the profile is placed on the base and fixed by the profile clamping mechanism, and then the rotating arm is rotated to make the saw blade continuously approach the profile and cut the profile.

[0003] An existing Chinese patent (publication number CN221110109U) discloses a handheld metal cold-cutting saw. By arranging a debris cleaning mechanism and a waste chip chute inside a protective cover, a rotating rod is rotated to move a brush plate to one side of a circular saw blade. At the same time, an external motor of the rotating shaft is started to drive the rotating shaft to rotate slowly, and the brush plate is used to automatically clean debris from the surface of the circular saw blade. The cleaned debris falls into a drawer inside the waste chip chute for collection, thereby preventing the problem of residual debris aggravating the wear of the circular saw blade and shortening its service life, thereby achieving the purpose of automatically cleaning debris from the surface of the circular saw blade after cutting.

[0004] However, the handheld metal cold cutting saw designed above still has some disadvantages in actual use: when the handheld metal cold cutting saw is in use, the brush plate is moved to one side of the circular saw blade, and then the circular saw blade is slowly rotated, so that the brush plate is used to automatically clean the debris on the surface of the circular saw blade. However, the brush plate is fixed and only relies on the rotation of the saw blade to clean the outer peripheral surface of the saw blade. The outer periphery of the saw blade lacks axial friction. For some debris with strong viscosity or embedded deeply in the teeth of the saw blade, the cleaning effect of relying solely on the cleaning method of the brush plate is limited and may not be effectively removed. Utility Model Content

[0005] The purpose of the present invention is to provide a portable cold-cutting saw to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model provides a portable cold cutting saw, including a mounting shell, a body connected to one side of the mounting shell and a cutting saw assembly arranged in the mounting shell, an electric push rod is fixedly installed on the top of the inner wall of the mounting shell, the driving end of the electric push rod is fixedly installed on the mounting seat, a slider is slidingly provided inside the mounting seat, a connecting plate is fixedly installed on the bottom of the slider, a brush head is fixedly installed on the bottom of the connecting plate, a servo motor is fixedly installed on the top of the mounting seat, the driving end of the servo motor is fixedly connected to a half gear, a rack is fixedly connected to one side of the inner wall of the slider, and the rack is meshed with the half gear.

[0007] Furthermore, a first baffle is fixedly installed on one side of the bottom of the mounting shell, and there are two first baffles. The two first baffles are symmetrically arranged on both sides of the bottom of the mounting shell with the vertical axis of the mounting shell as the center. A second baffle is slidably connected to the top of the first baffle, and a first iron block is fixedly installed on one side of the second baffle. There are two second baffles, and a first magnet is fixedly installed on one side of one of the second baffles.

[0008] Furthermore, a first sliding groove is opened on one side of the interior of the mounting seat, and a first slider is fixedly installed on the side of the sliding member close to the first sliding groove. There are two first sliders, and both of the first sliders are slidably set inside the first sliding groove.

[0009] Furthermore, the cutting saw assembly includes a saw blade movably arranged inside the mounting shell, and a saw handle is movably inserted into the interior of the body. There are two saw handles, and a drive motor is fixedly installed on one side of one of the saw handles. The drive end of the drive motor is fixedly connected to the saw blade, and the saw blade is rotatably arranged on the opposite side of the two saw handles.

[0010] Furthermore, a mounting groove is provided on one side of the bottom of the mounting shell, and an ash collecting box is slidably arranged in the mounting groove.

[0011] Furthermore, a first handle is fixedly mounted on one side of the ash collecting box, and the shape of the first handle is set to be "U".

[0012] Furthermore, a second slider is fixedly connected to one side of the second baffle, and a second magnet is fixedly connected to one side of the second slider.

[0013] Furthermore, a second handle is fixedly mounted on the top of the body, and the second handle is provided with an integrally formed anti-slip pattern.

[0014] Compared with the prior art, the beneficial effect of the present invention is: by adjusting the saw blade to a slow speed, and then driving the electric push rod to make the brush head drop down to contact with the saw blade, starting the servo motor to rotate the half gear, and the half gear drives the slide to reciprocate in the vertical direction of the saw blade, so that the brush head can remove some debris on the saw blade that is highly sticky or embedded deeply in the teeth of the saw blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the external three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal cross-section of the present invention;

[0017] Figure 3For this utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the top of the brush head of the utility model;

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the bottom of the mounting base of the utility model.

[0020] In the figure: 1. Mounting shell; 2. Machine body; 3. Saw blade; 4. Saw handle; 5. Electric push rod; 6. Servo motor; 7. Mounting base; 8. Connecting plate; 9. Brush head; 10. Slide; 11. Rack; 12. Half gear; 13. First slider; 14. First slide groove; 15. First baffle; 16. Second baffle; 17. First iron block; 18. Ash box; 19. First magnet; 20. Second slider; 21. Second handle. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-5 The utility model provides a technical solution: it includes a mounting shell 1, a body 2 connected to one side of the mounting shell 1 and a cutting saw assembly arranged in the mounting shell 1, an electric push rod 5 is fixedly installed on the top of the inner wall of the mounting shell 1, a mounting seat 7 is fixedly installed on the driving end of the electric push rod 5, a slider 10 is slidingly provided inside the mounting seat 7, a connecting plate 8 is fixedly installed on the bottom of the slider 10, a brush head 9 is fixedly installed on the bottom of the connecting plate 8, a servo motor 6 is fixedly installed on the top of the mounting seat 7, a half gear 12 is fixedly connected to the driving end of the servo motor 6, a rack 11 is fixedly connected to one side of the inner wall of the slider 10, and the rack 11 is meshed with the half gear 12.

[0023] See Figure 2 The cutting saw assembly includes a saw blade 3 movably arranged inside the mounting shell 1, a saw handle 4 movably inserted into the interior of the body 2, and two saw handles 4 are provided. A drive motor is fixedly installed on one side of one of the saw handles 4, and the drive end of the drive motor is fixedly connected to the saw blade 3. The saw blade 3 is rotatably arranged on the opposite side of the two saw handles 4. By setting the saw blade 3 and starting the drive motor, the saw blade 3 cuts the object to be cut.

[0024] It should be noted that the brush head 9 is located directly above the saw blade 3, and the brush head 9 is perpendicular to the saw blade 3. When the electric push rod 5 is extended to the maximum length, the brush head 9 just reaches the tooth gap position of the saw blade 3. A battery is provided on one side of the interior of the fuselage 2, and the battery is electrically connected to the electric telescopic rod inside the fuselage 2, the electric push rod 5 in the mounting shell 1, etc., and a control switch is provided on the outside of the fuselage 2.

[0025] The staff holds the second handle 21, aligns the mounting shell 1 with the fuselage 2 to the part to be cut, and pushes the saw handle 4 to slide through the electric telescopic rod inside the fuselage 2, so that the saw blade 3 extends out of the mounting shell 1 to cut the object. When the saw blade 3 finishes cutting, cutting debris remains on the saw blade 3. When the saw blade 3 retracts into the interior of the mounting shell 1, the cold cutting saw is provided with a fast cutting gear and a slow cutting gear. The higher the gear, the faster the speed. At this time, the cold cutting saw is adjusted to the slow cutting gear to slow down the speed of the saw blade 3. The driving end of the electric push rod 5 drives the mounting seat 7 to move downward, and the servo motor 6 is started to drive the half gear 1 2 rotates, and the half gear 12 periodically meshes with the two racks 11 in turn when it rotates. When the teeth of the half gear 12 mesh with one of the racks 11, it drives the rack 11 to move horizontally, and the slide 10 moves synchronously with the rack 11. The slide 10 slides in the mounting seat 7 through the first slider 13. When the half gear 12 meshes with the other rack 11, it drives it to slide in the opposite direction, so that the slide 10 slides back and forth on the top of the saw blade 3. The brush head 9 moves synchronously with the slide 10. For debris embedded deep in the teeth of the saw blade 3, the brush head 9 can reciprocate and clean it on the top of the saw blade 3.

[0026] See Figure 2 A first baffle 15 is fixedly installed on one side of the bottom of the mounting shell 1. There are two first baffles 15. The two first baffles 15 are symmetrically arranged on both sides of the bottom of the mounting shell 1 with the vertical axis of the mounting shell 1 as the center. A second baffle 16 is slidably connected to the top of the first baffle 15. A first iron block 17 is fixedly installed on one side of the second baffle 16. There are two second baffles 16, and a first magnet 19 is fixedly installed on one side of one of the second baffles 16.

[0027] By setting the second baffle 16, when the saw blade 3 is cleaned by the brush head 9, the debris on the saw blade 3 falls into the inside of the mounting shell 1. Before cleaning, by holding the second slider 20, the two second baffles 16 are slid away from each other on the first baffle 15, and the debris can fall into the inside of the ash box 18. After the brush head 9 completes the cleaning, the second baffle 16 is slid so that the two second baffles 16 are close to each other. The first iron block 17 and the first magnet 19 are magnetically attracted to each other, preventing the debris in the ash box 18 from splashing when the saw blade 3 continues to be used. After multiple cleanings, the ash box 18 can be pulled out and the debris can be dumped, thereby improving the work efficiency of the staff.

[0028] See Figure 4 and Figure 5 A first slide groove 14 is provided on one side of the interior of the mounting seat 7, and a first slider 13 is fixedly installed on the side of the slide 10 close to the first slide groove 14. There are two first sliders 13, and both first sliders 13 are slidably arranged inside the first slide groove 14, so that the slide 10 slides in the mounting seat 7 through the first slider 13, which guides the sliding of the slide 10.

[0029] It should be noted that an electric telescopic rod is provided inside the fuselage 2, the driving end of the electric telescopic rod is connected to the saw handle 4, and a slot is provided on one side of the mounting shell 1 for the electric telescopic rod to push the saw handle 4 to slide, so that the saw blade 3 extends out of the mounting shell 1 to cut the object.

[0030] See Figure 1 A mounting groove is provided on one side of the bottom of the mounting shell 1, and a dust box 18 is slidably provided in the mounting groove, so that the cleaned debris can fall into the interior of the dust box 18 and collect the cleaned debris. A first handle is fixedly installed on one side of the dust box 18, and the shape of the first handle is set to be "U" shaped, which is convenient for pulling out the dust box 18 after multiple cleanings and dumping the debris, thereby improving the work efficiency of the staff.

[0031] See Figure 1 A second slider 20 is fixedly connected to one side of the second baffle 16, and a second magnet is fixedly connected to one side of the second slider 20. A second iron block is fixedly installed on the outside of the mounting shell 1, which is used to attract the second magnet when the second baffle 16 slides away from each other, thereby fixing the second baffle 16, which is convenient for the ash box 18 to collect debris. By setting the second slider 20, it is convenient to pull the second baffle 16 to move it closer to or away from each other, thereby achieving the opening and closing effect of the ash box 18. A second handle 21 is fixedly installed on the top of the fuselage 2, and the second handle 21 is provided with an integrally formed anti-slip texture, which is convenient for the staff to hold the second handle 21 and use a cold cutting saw to cut the cutting object.

[0032] Working principle: When the device is in use, the staff holds the second handle 21 to align the mounting shell 1 and the fuselage 2 with the part to be cut, and pushes the saw handle 4 to slide through the electric telescopic rod inside the fuselage 2, so that the saw blade 3 extends out of the mounting shell 1 to cut the object. When the saw blade 3 finishes cutting, cutting debris remains on the saw blade 3. When the saw blade 3 retracts into the interior of the mounting shell 1, the cold cutting saw is provided with a fast cutting gear and a slow cutting gear. The higher the gear, the faster the speed. At this time, the cold cutting saw is adjusted to the slow cutting gear to slow down the speed of the saw blade 3. The driving end of the electric push rod 5 drives the mounting seat 7 to move downward. When the electric push rod 5 is extended to the limit length, the brush head 9 just reaches the saw blade 3, start the servo motor 6 to drive the half gear 12 to rotate. When the half gear 12 rotates, it keeps meshing with the two racks 11 intermittently. When the teeth of the half gear 12 mesh with one of the racks 11, it drives the rack 11 to move horizontally, and the slide 10 moves synchronously with the rack 11. The slide 10 slides in the mounting seat 7 through the first slider 13. When the half gear 12 meshes with the other rack 11, it drives it to slide in the opposite direction, so that the slide 10 slides back and forth on the top of the saw blade 3. The brush head 9 moves synchronously with the slide 10. For debris embedded deep in the teeth of the saw blade 3, the brush head 9 can clean it back and forth on the top of the saw blade 3;

[0033] When the saw blade 3 is cleaned by the brush head 9, the debris on the saw blade 3 falls into the inside of the mounting shell 1. Before cleaning, by holding the second slider 20, the two second baffles 16 slide away from each other on the first baffle 15, and the debris can fall into the inside of the ash box 18. After the brush head 9 completes the cleaning, the second baffle 16 is slid so that the two second baffles 16 are close to each other. The first iron block 17 and the first magnet 19 are magnetically attracted to each other to prevent the debris in the ash box 18 from splashing when the saw blade 3 continues to be used. After multiple cleanings, the ash box 18 can be pulled out and the debris can be dumped, thereby improving the work efficiency of the staff.

Claims

1. A portable cold-cutting saw comprising a mounting shell (1), a body (2) connected to one side of the mounting shell (1), and a saw assembly disposed within the mounting shell (1), characterized in that: An electric push rod (5) is fixedly mounted on the top of the inner wall of the mounting shell (1), a mounting seat (7) is fixedly mounted on the driving end of the electric push rod (5), a sliding member (10) is slidably provided inside the mounting seat (7), a connecting plate (8) is fixedly mounted on the bottom of the sliding member (10), a brush head (9) is fixedly mounted on the bottom of the connecting plate (8), a servo motor (6) is fixedly mounted on the top of the mounting seat (7), a half gear (12) is fixedly connected to the driving end of the servo motor (6), a rack (11) is fixedly connected to one side of the inner wall of the sliding member (10), and the rack (11) is meshed with the half gear (12).

2. The portable cold-cutting saw according to claim 1, wherein: A first baffle (15) is fixedly mounted on one side of the bottom of the mounting shell (1), and there are two first baffles (15). The two first baffles (15) are symmetrically arranged on both sides of the bottom of the mounting shell (1) with the vertical axis of the mounting shell (1) as the center. A second baffle (16) is slidably connected to the top of the first baffle (15), and a first iron block (17) is fixedly mounted on one side of the second baffle (16). There are two second baffles (16), and a first magnet (19) is fixedly mounted on one side of one of the second baffles (16).

3. The portable cold-cutting saw according to claim 2, wherein: A first sliding groove (14) is provided on one side of the interior of the mounting seat (7), and a first sliding block (13) is fixedly installed on one side of the sliding member (10) close to the first sliding groove (14). There are two first sliding blocks (13), and both first sliding blocks (13) are slidably arranged inside the first sliding groove (14).

4. The portable cold-cutting saw according to claim 3, wherein: The saw assembly comprises a saw blade (3) movably arranged inside the mounting shell (1); a saw handle (4) is movably inserted into the interior of the body (2); two saw handles (4) are provided, one side of which is fixedly mounted with a drive motor, a drive end of the drive motor is fixedly connected to the saw blade (3), and the saw blade (3) is rotatably arranged on opposite sides of the two saw handles (4).

5. The portable cold-cutting saw according to claim 4, wherein: A mounting groove is provided on one side of the bottom of the mounting shell (1), and an ash collecting box (18) is slidably arranged in the mounting groove.

6. The portable cold-cutting saw according to claim 5, wherein: A first handle is fixedly mounted on one side of the ash collecting box (18), and the shape of the first handle is set to be "U"-shaped.

7. The portable cold-cutting saw according to claim 6, wherein: A second slider (20) is fixedly connected to one side of the second baffle (16), and a second magnet is fixedly connected to one side of the second slider (20).

8. The portable cold-cutting saw according to claim 7, wherein: A second handle (21) is fixedly mounted on the top of the body (2), and the second handle (21) is provided with an integrally formed anti-slip pattern.

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