Cold cutting saw with width adjustment structure

Abstract

The present invention discloses a cold cutting saw with a width adjustment structure, comprising a base and a cutting part, wherein the cutting part is a handheld cold cutting saw, comprising a driving body, a cutting blade is arranged on the driving body, a grip shaft is also arranged on the driving body, a locking hole is opened on the grip shaft, a guide column is arranged on the base, a sliding block is arranged on the guide column for guiding sliding, a sliding rod is arranged on the sliding block, a locking part is arranged on the sliding rod for guiding sliding, and the locking part comprises a moving frame, and the moving frame is arranged on the sliding rod for guiding sliding. The present invention provides a cold cutting saw with a width adjustment structure, when the width of the material is small, vertical cutting is directly performed, when the width of the material is large, vertical cutting is performed first, and then forward cutting is performed, so as to complete the cutting of the plate, and avoid turning the material around for secondary cutting, and at the same time, the cutting process is completed automatically, so as to improve the cutting efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of cold cutting saws, in particular to a cold cutting saw with a width adjustment structure. Background Art

[0002] A cold cutting saw is a cutting tool used for cold cutting. It is mainly used in the fields of home improvement and steel cutting. The width of the cutting material of the cold cutting saws used today is often fixed. When encountering wider materials, it is often necessary to turn around and align with the original cutting path after cutting. Only in this way can the material be completely cut. In the process of turning around and cutting, it is often misaligned with the original cutting path, resulting in uneven cutting edges. Summary of the invention

[0003] The present invention aims at the deficiencies in the prior art and provides a cold cutting saw with a width adjustment structure.

[0004] In order to solve the above technical problems, the present invention is solved through the following technical solutions: a cold cutting saw with a width adjustment structure, comprising a base and a cutting part, the cutting part is a handheld cold cutting saw, which comprises a driving body, a cutting blade is arranged on the driving body, a grip shaft is also arranged on the driving body, a locking hole is opened on the grip shaft, a guide column is arranged on the base, a sliding block is arranged on the guide column for guiding sliding, and a sliding rod is arranged on the sliding block, a locking part is arranged on the sliding rod for guiding sliding, the locking part comprises a moving frame, the moving frame is arranged on the sliding rod for guiding sliding, and a first gear is rotatably arranged on the moving frame, a protrusion is arranged on the first gear, a matching hole is arranged on the cutting blade, and a sliding hole is arranged on the moving frame, the grip shaft can slide into the sliding hole, and at this time the protrusion on the first gear can enter the matching hole, the cutting blade rotates to drive the first gear to rotate, and the The movable frame is provided with a locking rod, and after the grip shaft is inserted into the sliding hole, the locking rod slides downward and can enter the locking hole, thereby locking the cutting part on the movable frame. The locking part also includes a deceleration part, a wire wheel and a linkage frame. The wire wheel is rotatably arranged on the movable frame, and the deceleration part slows down the rotation speed of the first gear and transmits it to the wire wheel. The linkage frame is guided and slidably arranged on the base, and a positioning rod is arranged on the linkage frame. The movable frame is provided with a positioning hole, and the movable frame moves downward with the movable block, and the positioning hole can be inserted on the positioning rod. The base is also provided with a fixed locking block and a movable locking block, and the movable locking block is guided and slidably arranged on the base, and a sliding limit plate is also slidably arranged in the base. The movable locking block moves backward to drive the sliding limit plate to move backward together, and one end of the rope is connected to the wire wheel, and the other end is arranged on the sliding limit plate through the channel inside the movable frame and the linkage frame.

[0005] Its beneficial effect is that when the material width is large, vertical cutting can be completed first, and then cutting can be performed in the width direction, thereby completing the complete cutting of the material, so that the material can be cut in one go, thereby improving the cutting efficiency.

[0006] In the above solution, preferably, a limiting column is further provided on the base, and when the movable frame contacts the linkage frame, the sliding block contacts the limiting column.

[0007] In the above scheme, preferably, a top touch rod is slidably arranged in the limit column, a locking groove is opened on the side of the linkage frame, and a locking block is elastically slidably arranged in the base, the front end of the locking block can enter the locking groove, the lower end of the top touch rod is rotatably connected to one end of the connecting rod, and the other end is rotatably arranged on the locking block, the upper end of the top touch rod exceeds the upper plane of the limit column, and when the sliding block presses on the limit column, the top touch rod moves downward, driving the locking block to move backward and leave the locking groove.

[0008] In the above scheme, preferably, the guide column is sleeved with a first elastic member, whose two ends respectively touch the base and the sliding block, and the sliding rod is sleeved with a second elastic member, whose two ends respectively touch the moving frame and the rear end protrusion of the sliding rod.

[0009] In the above scheme, preferably, the deceleration part includes a second gear, a third gear and a fourth gear, the second gear and the fourth gear are large gears, the third gear is a small gear, the second gear and the third gear are arranged on the same axis, and the second gear is meshed with the first gear, the third gear is meshed with the fourth gear, and the wire wheel is arranged on the fourth gear.

[0010] In the above scheme, preferably, a rope channel is provided in the movable frame and passes through the positioning hole, and a telescopic channel is also provided on the linkage frame, entering from the upper end of the positioning rod and passing through the rear end of the linkage frame.

[0011] The beneficial effects of the present invention are as follows: the present invention provides a cold cutting saw with a width adjustment structure, which directly performs vertical cutting when the material width is small, and performs vertical cutting first and then cutting forward when the material width is large, thereby completing the complete cutting of the plate and eliminating the need to turn the material around for secondary cutting. At the same time, the cutting process is completed automatically, thereby improving cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the present invention.

[0013] Figure 2 It is a transverse cross-sectional view of the present invention.

[0014] Figure 3 It is a schematic diagram of the cutting part of the present invention.

[0015] Figure 4 It is a longitudinal sectional view of the present invention.

[0016] Figure 5 It is a partial enlarged view of the linkage frame of the present invention.

[0017] Figure 6 It is an internal schematic diagram of the present invention.

[0018] Figure 7 This is a partial enlarged view of the locking block of the present invention.

[0019] Figure 8 It is a schematic diagram of the base of the present invention. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figure 1-Figure 8 A cold cutting saw with a width adjustment structure comprises a base 1, a cutting part 2, an electric control part and a locking part 4. The cutting part 2 is a handheld cold cutting saw, which comprises a driving body 21, a cutting blade 22 is arranged on the driving body 21, a matching hole 221 is arranged on the cutting blade 22, and a grip shaft 23 is arranged on the driving body 21, and a locking hole 231 is opened on the grip shaft 23. The power plug of the cutting part 2 is inserted into the electric control part, and the electric control part is connected to an external power supply. The base 1 is provided with a guide column 11, and the guide column 11 is provided with two A sliding block 12 is provided on the guide column 11 for guiding sliding, and a first elastic member 111 is sleeved on the guide column 11, and its two ends are respectively in contact with the base 1 and the sliding block 12, a sliding rod 13 is provided on the sliding block 12, and two sliding rods 13 are provided, and a limiting plate is provided at the rear ends of the two sliding rods 13, and the locking part 4 includes a moving frame 41, and the moving frame 41 is slidingly provided on the sliding rod 13, and a second elastic member 131 is sleeved on the sliding rod 13, and its two ends are respectively in contact with the limiting plate and the moving frame 41.

[0021] A first gear 42 is rotatably provided on the movable frame 41, and a protrusion 421 is provided at the front end of the first gear 42. A sliding hole 411 is also opened on the movable frame 41. The cutting part 2 is slidably set in the sliding hole 411 through the grip shaft 23, and at this time, the matching hole 221 on the cutting blade 22 can be installed on the protrusion 421 on the first gear 42. After the cutting part 2 is installed in place, a locking rod 412 is also slidably provided on the movable frame 41, which is perpendicular to the sliding hole 411. When the grip shaft 23 is inserted into the sliding hole 411, the locking rod 412 is lifted upward. After it is installed in place, the locking rod 412 is pressed downward to make the locking rod 412 enter the locking hole 231 of the grip shaft 23, so that the cutting part 2 is installed on the movable frame 41, and the rotation of the cutting blade 22 can drive the first gear 42 to rotate.

[0022] The movable frame 41 is also provided with a deceleration part 43, a wire wheel 44 and a linkage frame 45. The deceleration part 43 includes a second gear 431, a third gear 432 and a fourth gear 433. The second gear 431 and the fourth gear 433 are large gears, and the third gear 432 is a small gear. The second gear 431 and the third gear 432 are arranged on the same axis, and the second gear 431 is meshed with the first gear 42, and the third gear 432 is meshed with the fourth gear 433. The wire wheel 44 is arranged on the fourth gear 433. At this time, the rotation of the cutting blade 22 can drive the wire wheel 44 to rotate after deceleration.

[0023] The linkage frame 45 is slidingly arranged on the base 1, and a positioning rod 451 is arranged on the linkage frame 45. A positioning hole 413 is arranged on the mobile frame 41, and the positioning rod 451 is aligned with the positioning hole 413. A rope channel is arranged on the mobile frame 41, and a rope channel is also arranged on the linkage frame 45. The rope on the mobile frame 41 passes through the positioning hole 413, and the rope on the linkage frame 45 enters from the positioning rod 451 and passes through the rear end of the linkage frame 45. A fixed locking block 14 and a movable locking block 15 are also arranged on the base 1. The movable locking block 15 is slidingly arranged on the base 1, and a sliding limit plate 16 is also slidingly arranged in the base 1. A fourth elastic member is arranged on the rear end surface of the sliding limit plate 16. The movable locking block 15 moves backward to drive the sliding limit plate 16 to move backward together. In the process of moving backward, the fourth elastic member is compressed, and the line wheel 44 is connected to the line wheel 44. One end of the rope 46 is provided, and the other end passes through the channels inside the moving frame 41 and the linkage frame 45 and is arranged on the sliding limit plate 16, and a limit column 17 is also provided on the base 1. When the moving frame 41 touches the linkage frame 45, the sliding block 12 touches the limit column 17, and a top-touch rod 171 is slidably provided in the limit column 17. A locking groove 452 is provided on the side of the linkage frame 45. A locking block 18 is slidably provided in the base 1, and a guide rod is provided at the rear end of the locking block 18. A third elastic member is sleeved on the guide rod. In the initial state, the locking block 18 touches the locking groove 452 of the linkage frame 45 under the action of the third elastic member, thereby locking the linkage frame 45 and preventing it from moving, and the lower end of the top-touch rod 171 is rotatably connected to one end of the connecting rod 181, and the other end is rotatably provided on the locking block 18, and the upper end of the top-touch rod 171 exceeds the upper plane of the limit column 17.

[0024] In the initial state, the sliding limit plate 16 elastically contacts the linkage frame 45, fixing the material to be cut between the fixed locking block 14 and the movable locking block 15. When the width of the material is small, the cutting blade 22 can complete the cutting by moving vertically downward. At this time, the movable locking block 15 does not contact the sliding limit plate 16, and the sliding limit plate 16 elastically contacts the linkage frame 45. When the width of the cut material is large, the movable locking block 15 contacts the sliding limit plate 16 backward, thereby driving the sliding limit plate 16 to move backward together. One end of the rope 46 is connected to the movable limit plate 16, thereby driving one end of the rope 46 to move backward to release the contact with the linkage frame 45. After the material is fixed, the movable locking block 15 no longer moves, thereby causing the sliding limit plate 16 to no longer move.

[0025] At this time, the equipment starts and the cutting blade 22 starts to rotate, thereby driving the wire wheel 44 to rotate, first winding the excess wire around the wire wheel 44, and after the rope 46 is tightened, the wire wheel 44 continues to rotate. Since the linkage frame 45 is locked by the locking block 18 at this time, when the wire wheel 44 winds the rope 46 around the wire wheel 44, it drives the sliding block 12 to move downward, and the positioning hole 413 on the moving frame 41 is inserted into the positioning rod 451 of the linkage frame 45. At this time, the sliding block 12 presses on the limit column 17, so that the top contact rod 171 moves downward, and through the action of the connecting rod 181, the locking block 18 is pushed to move backward and disengage from the top contact with the linkage frame 45, thereby unlocking the linkage frame 45. At this time, the moving frame 41 and the linkage frame 45 are connected by the positioning rod 451, so they can move together along the direction of the sliding rod 13. At this time, the wire wheel 44 continues to rotate, driving the moving frame 41 and the linkage frame 45 to move together.

[0026] A first pressure touch switch is arranged on the upper end surface of the limit column 17. When the sliding block 12 is pressed downward on the limit column 17, the first pressure touch switch can be pressed. A second pressure touch switch is arranged on the sliding block 12. The moving frame 41 elastically touches the sliding block 12 under the action of the second elastic member 131. At this time, the second pressure touch switch is pressed. A third pressure touch switch is arranged on the sliding limit plate 16. When the linkage frame 45 touches the sliding limit plate 16, the third pressure touch switch is pressed.

[0027] When the first pressure-touch switch and the third pressure-touch switch are pressed, the socket at the power plug of the cutting part 2 is controlled to be powered off, so that the cutting part 2 is powered off and stops working.

[0028] When the width of the cutting material is small, the sliding limit plate 16 touches the linkage frame 45. At this time, the third pressure-touch switch is pressed. Therefore, when the sliding block 12 moves downward, it drives the cutting part 2 to move downward. After it moves into place, the cutting is completed. At this time, when the sliding block 12 presses on the limit column 17, the cutting part 2 is powered off, and the sliding block 12 automatically returns to the upward position under the action of the first elastic member 121.

[0029] The limit column 17 is provided with an electromagnet. When the second pressure-touch switch is not pressed, the electromagnet is powered on to start and adsorb the sliding block 12 . When the second pressure-touch switch is pressed, the electromagnet is powered off to release the adsorption of the sliding block 12 .

[0030] When the width of the cutting material is large, the cutting blade 22 cannot completely cut the material by moving vertically downward. According to the width of the material, the movable locking block 15 moves backward a certain distance to lock the material between the fixed locking block 14 and the movable locking block 15. In the process of the movable locking block 15 moving backward, the sliding limit plate 16 is driven to move backward together, so that the pressure touch of the third pressure touch switch disappears. At this time, the sliding block 12 moves downward and presses on the limit column 17, pressing the first pressure touch switch. At this time, the moving frame 41 and the linkage frame 45 have been connected as a whole. Therefore, the wire wheel continues to rotate at this time, thereby driving the moving frame 41 and the linkage frame 45 to move toward the end of the rope 46, that is, the sliding limit plate 16. During the movement of the frame 41, the second elastic member 131 is compressed and the pressure on the second pressure touch switch is released. Therefore, the sliding block 12 is adsorbed on the limit column 17 until the linkage frame 45 touches the sliding limit plate 16. At this time, the material cutting is completed, and the first pressure touch switch and the third pressure touch switch are pressed. Therefore, the socket at the power plug of the cutting part 2 is powered off, so that the cutting part 2 is powered off and stops working. The moving frame 41 and the linkage frame 45 are restored to the initial state backward under the action of the second elastic member 131. When the moving frame 41 touches the sliding block 12 again, the electromagnet is powered off, the limit column 17 releases the adsorption of the sliding block 12, and the sliding block 12 automatically returns to its initial position upward under the action of the first elastic member 121.

[0031] While the sliding block 12 is sliding upward, the locking block 18 is ejected forward under the action of the third elastic member to re-lock the linkage frame 45 .

[0032] Its working principle or usage is as follows:

[0033] When the width of the cutting material is small, the sliding limit plate 16 touches the linkage frame 45. At this time, the third pressure-touch switch is pressed. Therefore, when the sliding block 12 moves downward, it drives the cutting part 2 to move downward. After it moves into place, the cutting is completed. At this time, when the sliding block 12 presses on the limit column 17, the cutting part 2 is powered off, and the sliding block 12 automatically returns to the upward position under the action of the first elastic member 121.

[0034] When the width of the cutting material is large, the cutting blade 22 cannot completely cut the material by moving vertically downward. According to the width of the material, the movable locking block 15 moves backward a certain distance to lock the material between the fixed locking block 14 and the movable locking block 15. In the process of the movable locking block 15 moving backward, the sliding limit plate 16 is driven to move backward together, so that the pressure touch of the third pressure touch switch disappears. At this time, the sliding block 12 moves downward and presses on the limit column 17, pressing the first pressure touch switch. At this time, the moving frame 41 and the linkage frame 45 are already connected as a whole. Therefore, the wire wheel continues to rotate at this time, thereby driving the moving frame 41 and the linkage frame 45 to move toward the end of the rope 46, that is, the sliding limit plate 16. In the process of the movement of the moving frame 41, the second elastic member 131 is compressed, and the pressure touch of the second pressure touch switch is released at the same time. , so the sliding block 12 is adsorbed on the limit column 17 until the linkage frame 45 touches the sliding limit plate 16. At this time, the material cutting is completed, and the first pressure touch switch and the third pressure touch switch are pressed, so the socket at the power plug of the cutting part 2 is powered off, so that the cutting part 2 is powered off and stops working. The moving frame 41 and the linkage frame 45 are restored to their initial state backwards under the action of the second elastic member 131. When the moving frame 41 touches the sliding block 12 again, the electromagnet is powered off, and the limit column 17 releases the adsorption of the sliding block 12. The sliding block 12 automatically returns to its initial position upward under the action of the first elastic member 121. In the process of the sliding block 12 sliding upward, the pressure contact of the sliding block 12 on the top touch rod 171 disappears, so the locking block 18 pops forward under the action of the third elastic member and re-locks the linkage frame 45.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cold cutting saw with a width adjustment structure, characterized in that: The invention comprises a base (1) and a cutting part (2), wherein the cutting part (2) is a handheld cold-cutting saw and comprises a driving body (21), a cutting blade (22) being arranged on the driving body (21), a gripping shaft (23) being arranged on the driving body (21), and a locking hole (231) being arranged on the gripping shaft (23); A guide column (11) is provided on the base (1), a sliding block (12) is provided on the guide column (11) for guiding and sliding, a sliding rod (13) is provided on the sliding block (12), a locking portion (4) is provided on the sliding rod (13) for guiding and sliding, the locking portion (4) comprises a moving frame (41), the moving frame (41) is provided for guiding and sliding on the sliding rod (13), a first gear (42) is rotatably provided on the moving frame (41), a protrusion (421) is provided on the first gear (42), a matching hole (221) is provided on the cutting blade (22), and ... a moving frame (41) is provided for guiding and sliding, and a first gear (42) is provided on the first gear (42), a matching hole (221) is provided on the cutting blade (22), and the locking portion (4) comprises a moving frame (41), a moving frame (41) is provided for guiding and sliding, and a first gear (42) is provided on the first gear (42), and a first gear (42) is provided on the cutting blade (22). The movable frame (41) is provided with a sliding hole (411), the gripping shaft (23) can slide into the sliding hole (411), and at this time, the protrusion (421) on the first gear (42) can enter the matching hole (221), the cutting blade (22) rotates to drive the first gear (42) to rotate, and the movable frame (41) is provided with a locking rod (412), after the gripping shaft (23) is inserted into the sliding hole (411), the locking rod (412) slides downward to enter the locking hole (231), thereby locking the cutting part (2) on the movable frame (41); The locking portion (4) further comprises a deceleration portion (43), a wire wheel (44) and a linkage frame (45); the wire wheel (44) is rotatably arranged on the movable frame (41); the deceleration portion (43) slows down the rotation speed of the first gear (42) and transmits the rotation speed to the wire wheel (44); the linkage frame (45) is guide-slidably arranged on the base (1); a positioning rod (451) is arranged on the linkage frame (45); a positioning hole (413) is arranged on the movable frame (41); the movable frame (41) moves downward together with the movable block (12); and the positioning hole (413) can be inserted into the movable frame (413). On the positioning rod (451), the base (1) is also provided with a fixed locking block (14) and a movable locking block (15); the movable locking block (15) is slidably arranged on the base (1), and a sliding limit plate (16) is slidably arranged in the base (1); the movable locking block (15) moves backwards to drive the sliding limit plate (16) to move backwards together; one end of a rope (46) is connected to the wire wheel (44), and the other end is arranged on the sliding limit plate (16) through a channel inside the movable frame (41) and the linkage frame (45).

2. The cold cutting saw with a width adjustment structure according to claim 1, characterized in that: The base (1) is also provided with a limit column (17), and when the moving frame (41) contacts the linkage frame (45), the sliding block (12) contacts the limit column (17).

3. The cold cutting saw with a width adjustment structure according to claim 2, characterized in that: A top-touch rod (171) is slidably arranged in the limit column (17), a locking groove (452) is provided on the side of the linkage frame (45), a locking block (18) is elastically slidably arranged in the base (1), the front end of the locking block (18) can enter the locking groove (452), the lower end of the top-touch rod (171) is rotatably connected to one end of the connecting rod (181), and the other end is rotatably arranged on the locking block (18), the upper end of the top-touch rod (171) exceeds the upper plane of the limit column (17), and when the sliding block (12) presses against the limit column (17), the top-touch rod (171) moves downward, driving the locking block (18) to move backward and leave the locking groove (452).

4. The cold cutting saw with a width adjustment structure according to claim 1, characterized in that: The guide column (11) is sleeved with a first elastic member (111), the two ends of which respectively contact the base (1) and the sliding block (12); the sliding rod (13) is sleeved with a second elastic member (131), the two ends of which respectively contact the moving frame (41) and the rear end protrusion of the sliding rod (13).

5. The cold cutting saw with a width adjustment structure according to claim 1, characterized in that: The speed reduction unit (43) comprises a second gear (431), a third gear (432) and a fourth gear (433); the second gear (431) and the fourth gear (433) are large gears, the third gear (432) is a small gear, the second gear (431) and the third gear (432) are arranged on the same shaft, the second gear (431) is meshed with the first gear (42), the third gear (432) is meshed with the fourth gear (433), and the wire wheel (44) is arranged on the fourth gear (433).

6. The cold cutting saw with a width adjustment structure according to claim 1, characterized in that: The movable frame (41) is provided with a rope passage extending from the positioning hole (413), and the linkage frame (45) is also provided with a telescopic passage extending from the upper end of the positioning rod (451) and extending from the rear end of the linkage frame (45).

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