Handheld cold cutting machine
By designing an adjustable U-shaped inlet width in the handheld cold cutter, the stability problem of traditional handheld cold cutters when cutting different metal materials is solved, achieving a more stable cutting process and safety.
Patent Information
- Application Number
- CN202420967190.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The U-shaped inlet port of the traditional handheld cold cutting machine has a fixed width and cannot adapt to the size difference of different metal materials, resulting in vibration of the saw blade during cutting, resulting in unstable cutting and safety hazards.
A handheld cold cutting machine is designed, and the width of its U-shaped inlet can be changed by adjusting the position of the press plate to match the diameters of different metal materials, avoiding shaking and unstable cutting caused by excessive gaps.
By adjusting the width of the U-shaped inlet port, the stability of the saw blade is ensured when cutting metal materials, avoiding uneven cutting and inclined and broken saw blades, effectively eliminating safety hazards.
Smart Images
Figure CN222679679U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a handheld cold cutting machine. Background Art
[0002] A handheld cold cutter is a handheld device that cuts metal materials with a high-speed rotating saw blade. In actual cutting, a handheld cold cutter is generally used to cut tubular or axial metal materials. In order to ensure stability during cutting, a U-shaped guide port is provided at the front end of the handheld cold cutter to limit the metal material, thereby facilitating the saw blade to cut the metal material. Tubular or axial metal materials often differ in size, and the width of the U-shaped guide port of a traditional handheld cold cutter is inconvenient to fix. When the gap between the outer wall of the metal material and the inner wall of the U-shaped guide port is large, the vibration force generated by the saw blade when cutting the metal material can easily cause the handheld cold cutter to shake, resulting in an uneven cutting surface, and even tilting and jamming of the saw blade, which is prone to saw blade breakage, posing certain safety hazards. Summary of the invention
[0003] The utility model aims to solve the existing technical problem and provide a handheld cold cutting machine, which can effectively adjust the width of the U-shaped introduction port according to the size of different metal materials, thereby avoiding the situation where the gap between the inner wall of the U-shaped introduction port and the outer wall of the metal material is too large to cause shaking, ensuring the stability when cutting metal materials and effectively eliminating safety hazards.
[0004] The technical solution adopted by the utility model to solve the above technical problems is:
[0005] The utility model discloses a hand-held cold cutting machine, comprising an electric mechanism and a saw blade arranged at the front side of the electric mechanism. A cover located above the saw blade is arranged at the front side of the electric mechanism, a U-shaped introduction port is arranged on the left side of the cover, a slot is arranged on the upper inner wall of the U-shaped introduction port, and the left notch of the slot is located on the left side wall of the U-shaped introduction port; a plug block matching with the plug block is arranged in the slot, and the plug block and the slot are fixed by a fixing structure; an adjustment seat is arranged at the left end of the plug block; a square hole is arranged in the middle of the adjustment seat and passes through the adjustment seat longitudinally; a square rod matching with the square rod is arranged in the square hole; the upper end of the square rod passes upward to the outside of the square hole and is provided with An adjusting cover; a set of springs outside the square rod is provided between the lower end surface of the adjusting cover and the upper surface of the adjusting seat; a pressure plate is provided at the lower end of the square rod, which is in contact with the upper inner wall of the U-shaped introduction port; a rotating groove matching the saw blade is provided on the right side wall of the pressure plate; a transverse screw hole that penetrates the square hole is provided on the left side wall of the adjusting seat, and the transverse screw hole and the square hole are perpendicular to each other; a transverse screw rod matching the transverse screw hole is threaded in the transverse screw hole; the left end of the transverse screw rod passes through the transverse screw hole to the left and is provided with a rotating structure, and the right end of the transverse screw rod presses against the left outer wall of the square rod; an auxiliary limiting structure is provided on the right side of the adjusting cover.
[0006] The rotating structure includes a limiting portion arranged outside the left end of the transverse screw; a locking portion is provided at the center of the left side wall of the limiting portion, and the locking portion is a regular hexagon; a movable portion is provided at the center of the left side wall of the locking portion; an anti-slip portion is provided at the left end of the movable portion, and the diameter of the anti-slip portion is larger than the diameter of the locking portion; a wrench head matching with it is provided on the outer sleeve of the locking portion; a wrench handle is provided on one side of the wrench head.
[0007] A positioning hole is arranged at the center of the left end surface of the movable part; and a positioning head which is screwed into the positioning hole is arranged at the center of the right side wall of the anti-slip part.
[0008] The auxiliary limiting structure includes an extension arm arranged on the right side wall of the upper end of the adjusting cover; a through hole is provided on the extension arm; a fixing seat is provided on the left side wall of the upper part of the cover and is located directly below the extension arm; a longitudinal screw hole is provided on the fixing seat that is coaxial with the through hole, and the longitudinal screw hole passes through the fixing seat longitudinally; the longitudinal screw hole is parallel to the square hole; a longitudinal screw rod matching with it is threaded in the longitudinal screw hole; the upper end of the longitudinal screw rod passes upward through the through hole and is provided with a limiting head that fits with the upper surface of the extension arm.
[0009] The longitudinal screw rod is externally threadedly connected with an anti-lost nut located between the extension arm and the fixing seat.
[0010] The adjusting cover is sleeved on the upper end of the square rod, and an upper adjusting distance is provided between the upper inner wall of the adjusting cover and the upper end surface of the square rod; an auxiliary screw hole is provided at the center of the upper end surface of the square rod; an auxiliary screw is provided at the center of the upper inner wall of the adjusting cover; the lower end of the auxiliary screw is screwed into the auxiliary screw hole, and a lower adjusting distance is provided between the lower end surface of the auxiliary screw and the bottom of the auxiliary screw hole.
[0011] A screw joint is arranged at the center of the lower end surface of the square rod; and a screw connection hole which is screwed to the screw joint is arranged on the upper surface of the pressure plate.
[0012] An introduction arc surface is provided at the lower portion of the U-shaped introduction port.
[0013] The fixing structure includes a plurality of rear through holes arranged on the plug block; the front side wall of the cover is provided with a plurality of front through holes intersecting with the rear through holes; the rear inner wall of the slot is provided with a fixing screw hole coaxial with the rear through hole; a fixing screw passes through the front through hole and the rear through hole in sequence backwards and is screwed into the fixing screw hole, and the head of the fixing screw is pressed on the front side wall of the cover.
[0014] The beneficial effects of the utility model are:
[0015] Compared with the prior art, the lower surface of the pressure plate of the handheld cold cutting machine adopting the structure of the utility model can effectively replace the lower surface of the pressure plate, thereby effectively changing the actual width of the U-shaped introduction port by adjusting the position of the lower surface of the pressure plate. When the pressure plate needs to be adjusted, the square rod can be directly pressed down by the adjusting cover. When the square rod moves downward, the spring is compressed and generates elasticity, and the pressure plate moves downward synchronously. At this time, the gap between the lower surface of the pressure plate and the lower inner wall of the U-shaped introduction port continues to decrease, so that the gap between the lower surface of the pressure plate and the lower inner wall of the U-shaped introduction port just matches the diameter of the metal material, avoiding the situation where the gap between the outer wall of the metal material and the inner wall of the U-shaped introduction port is too large, resulting in instability when the saw blade cuts the metal material, effectively ensuring the cutting quality, and at the same time effectively avoiding the situation where the saw blade is tilted and compressed due to lack of guidance during cutting, thereby causing the saw blade to break, effectively eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the utility model handheld cold cutting machine;
[0017] Figure 2 It is a partial cross-sectional view of the handheld cold cutting machine of the utility model;
[0018] Figure 3 It is another partial cross-sectional view of the handheld cold cutting machine of the utility model;
[0019] Figure 4 It is a three-dimensional diagram of the handheld cold cutting machine of the utility model. DETAILED DESCRIPTION
[0020] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:
[0021] See also Figures 1 to 4 The utility model provides a hand-held cold cutting machine, comprising an electric mechanism 1, a saw blade 2 arranged at the front side of the electric mechanism 1, a cover 3 located above the saw blade 2 is arranged at the front side of the electric mechanism 1, a U-shaped introduction port 4 is arranged on the left side of the cover 3, a slot 5 is arranged on the upper inner wall of the U-shaped introduction port 4, and the left notch of the slot 5 is located on the left side wall of the U-shaped introduction port 4; a plug block 6 matching with it is arranged in the slot 5, and the plug block 6 and the slot 5 are fixed by a fixing structure; an adjustment seat 7 is arranged at the left end of the plug block 6; a square hole 8 penetrating through the adjustment seat 7 is arranged in the middle of the adjustment seat 7; a square rod 9 matching with it is arranged in the square hole 8; the upper end of the square rod 9 passes upward to the outside of the square hole 8 and is provided with an adjustment cover 10 ; A set of springs 11 outside the square rod 9 is provided between the lower end surface of the adjusting cover 10 and the upper surface of the adjusting seat 7; a pressure plate 12 is provided at the lower end of the square rod 9, which fits the upper inner wall of the U-shaped introduction port 4; a rotating groove 13 matching the saw blade 2 is provided on the right side wall of the pressure plate 12; a transverse screw hole 14 is provided on the left side wall of the adjusting seat 7, which is connected with the square hole 8, and the transverse screw hole 14 and the square hole 8 are perpendicular to each other; a transverse screw rod 15 matching with it is screwed into the transverse screw hole 14; the left end of the transverse screw rod 15 passes through the transverse screw hole 14 to the left and is provided with a rotating structure, and the right end of the transverse screw rod 15 presses on the left outer wall of the square rod 9; an auxiliary limiting structure is provided on the right side of the adjusting cover 10.
[0022] The rotating structure includes a limiting portion 16 arranged outside the left end of the transverse screw 15; a locking portion 17 is provided at the center of the left side wall of the limiting portion 16, and the locking portion 17 is a regular hexagon; a movable portion 18 is provided at the center of the left side wall of the locking portion 17; an anti-slip portion 19 is provided at the left end of the movable portion 18, and the diameter of the anti-slip portion 19 is larger than the diameter of the locking portion 17; the locking portion 17 is covered with a wrench head 20 matching it; a wrench handle 21 is provided on one side of the wrench head 20.
[0023] A positioning hole 22 is provided at the center of the left end surface of the movable portion 18 ; a positioning head 23 screwed into the positioning hole 22 is provided at the center of the right side wall of the anti-slip portion 19 .
[0024] The auxiliary limiting structure includes an extension arm 24 arranged on the right side wall of the upper end of the adjustment cover 10; a through hole 25 is provided on the extension arm 24; a fixing seat 26 is provided on the left side wall of the upper part of the cover 3 and is located directly below the extension arm 24; a longitudinal screw hole 27 coaxial with the through hole 25 is provided on the fixing seat 26, and the longitudinal screw hole 27 longitudinally penetrates the fixing seat 26; the longitudinal screw hole 27 is parallel to the square hole 8; a longitudinal screw rod 28 matching with it is screwed into the longitudinal screw hole 27; the upper end of the longitudinal screw 28 passes through the through hole 25 upward and is provided with a limiting head 29 that fits with the upper surface of the extension arm 24.
[0025] The longitudinal screw rod 28 is externally threaded with an anti-lost nut 30 located between the extension arm 24 and the fixing seat 26 .
[0026] The adjusting cover 10 is sleeved on the outer side of the upper end of the square rod 9, and an upper adjusting distance 31 is provided between the upper inner wall of the adjusting cover 10 and the upper end surface of the square rod 9; an auxiliary screw hole 32 is provided at the center of the upper end surface of the square rod 9; an auxiliary screw rod 33 is provided at the center of the upper inner wall of the adjusting cover 10; the lower end of the auxiliary screw rod 33 is screwed into the auxiliary screw hole 32, and a lower adjusting distance 34 is provided between the lower end surface of the auxiliary screw rod 33 and the bottom of the auxiliary screw hole 32.
[0027] A screw joint 35 is disposed at the center of the lower end surface of the square rod 9 ; a screw connection hole 36 screwed to the screw joint 35 is disposed on the upper surface of the pressure plate 12 .
[0028] The U-shaped inlet 4 is provided with an inlet arc surface 37 at the lower portion of the port.
[0029] The fixing structure includes a plurality of rear through holes 38 provided on the insert block 6; a plurality of front through holes 39 intersecting the rear through holes 38 are provided on the front side wall of the cover 3; a fixing screw hole 40 coaxial with the rear through hole 38 is provided on the rear inner wall of the slot 5; a fixing screw 41 passes through the front through hole 39 and the rear through hole 38 in sequence backwards and is screwed into the fixing screw hole 40, and the head of the fixing screw 41 is pressed on the front side wall of the cover 3.
[0030] The method of using the utility model is as follows:
[0031] The metal material to be cut can be first moved into the U-shaped inlet 4, and then the pressure plate 12 can be moved so that the metal material is just stuck in the gap between the pressure plate 12 and the lower inner wall of the U-shaped inlet 4 to ensure the stability of the saw blade 2 when cutting the metal material.
[0032] When the position of the pressure plate 12 needs to be adjusted, the wrench head 20 can be rotated by the wrench handle 21 first, so as to realize the rotation of the locking portion 17 engaged with the wrench head 20. At this time, the transverse screw 15 rotates synchronously and moves away from the square rod 9 to the left. As the right end of the transverse screw 15 no longer presses on the left outer wall of the square rod 9, the square rod 9 moves freely. At this time, the square rod 9 can be pressed down by the adjusting cover 10. When the square rod 9 moves down, the spring 11 is compressed and generates elasticity, and the pressure plate 12 moves down synchronously. At the same time, the gap between the lower surface of the pressure plate 12 and the lower inner wall of the U-shaped introduction port 4 becomes smaller and smaller, so that the gap between the lower surface of the pressure plate 12 and the lower inner wall of the U-shaped introduction port 4 just matches the diameter of the metal material, avoiding the situation where the gap between the outer wall of the metal material and the inner wall of the U-shaped introduction port 4 is too large, which causes the saw blade 2 to be unstable when cutting the metal material, effectively ensuring the cutting quality, and at the same time effectively avoiding the situation where there is no guidance during cutting, causing the saw blade 2 to tilt and be compressed, thereby causing the saw blade 2 to break, effectively eliminating safety hazards.
[0033] After the pressing plate 12 is moved to the actually required position, the transverse screw 15 can be rotated again through the wrench handle 21, so that the right end of the transverse screw 15 is tightly pressed against the left outer wall of the square rod 9, which is conducive to the sudden increase in friction force to effectively limit the movement of the square rod 9, thereby achieving the fixation of the pressing plate 12. In the process of rotating the wrench handle 21, in order to more conveniently drive the locking portion 17 to rotate through the wrench head 20, it is necessary to adjust the angle of the wrench handle 21 from time to time. When the angle of the wrench handle 21 needs to be adjusted, the wrench head 20 can be moved to the left so that the wrench head 20 is sleeved outside the movable portion 18. At this time, there is a gap between the inner wall of the wrench head 20 and the outer wall of the movable portion 18, so that the wrench head 20 can be rotated at will, thereby achieving the position adjustment of the wrench handle 21. After the position adjustment is completed, the wrench head 20 can be moved to the right again so that it is stuck outside the locking portion 17 again, and the transverse screw 15 can be rotated through the locking portion 17 again.
[0034] After the transverse screw 15 fixes the square rod 9, the longitudinal screw 28 can be used to further fix the square rod 9, thereby further improving the stability of the pressure plate 12 and effectively improving the stability of the metal material when passing through the gap between the lower surface of the pressure plate 12 and the lower inner wall of the U-shaped inlet 4. At this time, it is only necessary to rotate the longitudinal screw 28 through the limit head 29 to make the longitudinal screw 28 continue to move downward into the longitudinal screw hole 27. As the longitudinal screw 28 moves downward, the limit head 29 moves downward accordingly. When the lower surface of the limit head 29 is in contact with the upper surface of the extension arm 24, the existence of the limit head 29 can effectively limit the upward movement of the extension arm 24, thereby limiting the upward movement of the square rod 9 by adjusting the cover 10, realizing further fixation of the pressure plate 12, and ensuring the stability of the pressure plate 12 after it is adjusted to the actual required position to the greatest extent.
[0035] A positioning hole 22 is provided at the center of the left end face of the movable part 18, and a positioning head 23 screwed into the positioning hole 22 is provided at the center of the right side wall of the anti-detachment part 19. The limiting part 16 can limit the right movement of the wrench head 20, and the anti-detachment part 19 can limit the left movement of the wrench head 20, thereby avoiding the wrench head 20 from falling off. The fixing method of the anti-detachment part 19 can not only ensure its own stability, but also facilitate the disassembly and assembly of the anti-detachment part 19, thereby facilitating the replacement of the wrench head 20.
[0036] The longitudinal screw rod 28 is externally threaded with an anti-lost nut 30 located between the extension arm 24 and the fixing seat 26. The anti-lost nut 30 can limit the longitudinal screw rod 28 from further moving up after it moves up a certain distance, thereby preventing the longitudinal screw rod 28 from being disengaged after being screwed out of the longitudinal screw hole 27.
[0037] The adjusting cover 10 is sleeved on the outer side of the upper end of the square rod 9, and an upper adjustment distance 31 is provided between the upper inner wall of the adjusting cover 10 and the upper end surface of the square rod 9. An auxiliary screw hole 32 is provided in the center of the upper end surface of the square rod 9, and an auxiliary screw 33 is provided in the center of the upper inner wall of the adjusting cover 10. The lower end of the auxiliary screw 33 is screwed in the auxiliary screw hole 32, and a lower adjustment distance 34 is provided between the lower end surface of the auxiliary screw 33 and the bottom of the auxiliary screw hole 32. When the auxiliary screw 33 penetrates into the auxiliary screw hole 32, the distance between the lower end surface of the adjusting cover 10 and the upper surface of the adjusting seat 7 continues to decrease, and the initial state of the spring 11 being compressed changes, so as to control the resistance of the pressure plate when moving by adjusting the initial elasticity of the spring 11 to adapt to the operating habits of different personnel.
[0038] A screw joint 35 is provided at the center of the lower end surface of the square rod 9, and a screw hole 36 screwed to the screw joint 35 is provided on the upper surface of the pressure plate 12. This fixing method facilitates the disassembly and assembly of the pressure plate 12, so that the pressure plate 12 can be quickly replaced after it is worn.
[0039] An introduction arc surface 37 is provided at the lower portion of the U-shaped introduction port 4, which plays an introduction role in the initial stage of the metal material sliding into the U-shaped introduction port 4, facilitating the metal material to quickly enter the U-shaped introduction port 4, and effectively improving the cutting efficiency.
[0040] The fixing structure includes a plurality of rear through holes 38 provided on the plug block 6, a plurality of front through holes 39 intersecting the rear through holes 38 are provided on the front side wall of the cover 3, a fixing screw hole 40 coaxial with the rear through hole 38 is provided on the rear inner wall of the slot 5, a fixing screw 41 passes through the front through hole 39 and the rear through hole 38 backwards in sequence and is screwed into the fixing screw hole 40, and the head of the fixing screw 41 is pressed on the front side wall of the cover 3. This fixing method is conducive to the disassembly and assembly of the plug block 6, thereby facilitating the maintenance and replacement of other components.
Claims
1. A handheld cold cutting machine, comprising an electric mechanism, a saw blade arranged in front of the electric mechanism, a cover arranged in front of the electric mechanism and located above the saw blade, a U-shaped introduction port arranged on the left side of the cover, characterized in that: The upper inner wall of the U-shaped inlet is provided with a slot, and the left notch of the slot is located on the left side wall of the U-shaped inlet; a plug block matching it is provided in the slot, and the plug block and the slot are fixed by a fixing structure; an adjustment seat is provided at the left end of the plug block; a square hole is provided in the middle of the adjustment seat that passes through itself longitudinally; a square rod matching it is provided in the square hole; the upper end of the square rod passes upward to the outside of the square hole and is provided with an adjustment cover; a set of Spring; a pressure plate is provided at the lower end of the square rod, which fits with the upper inner wall of the U-shaped introduction port; a rotating groove matching the saw blade is provided on the right side wall of the pressure plate; a transverse screw hole is provided on the left side wall of the adjustment seat, which is connected with the square hole, and the transverse screw hole and the square hole are perpendicular to each other; a transverse screw rod matching with it is screwed in the transverse screw hole; the left end of the transverse screw rod passes to the left outside the transverse screw hole and is provided with a rotating structure, and the right end of the transverse screw rod is pressed against the left outer wall of the square rod; an auxiliary limiting structure is provided on the right side of the adjustment cover.
2. A handheld cold cutter according to claim 1, characterized in that: The rotating structure includes a limiting portion arranged outside the left end of the transverse screw; a locking portion is provided at the center of the left side wall of the limiting portion, and the locking portion is a regular hexagon; a movable portion is provided at the center of the left side wall of the locking portion; an anti-slip portion is provided at the left end of the movable portion, and the diameter of the anti-slip portion is larger than the diameter of the locking portion; a wrench head matching with it is provided on the outer sleeve of the locking portion; a wrench handle is provided on one side of the wrench head.
3. A handheld cold cutter according to claim 2, characterized in that: A positioning hole is arranged at the center of the left end surface of the movable part; and a positioning head which is screwed into the positioning hole is arranged at the center of the right side wall of the anti-slip part.
4. A handheld cold cutter according to claim 1, characterized in that: The auxiliary limiting structure includes an extension arm arranged on the right side wall of the upper end of the adjusting cover; a through hole is provided on the extension arm; a fixing seat is provided on the left side wall of the upper part of the cover and is located directly below the extension arm; a longitudinal screw hole is provided on the fixing seat that is coaxial with the through hole, and the longitudinal screw hole passes through the fixing seat longitudinally; the longitudinal screw hole is parallel to the square hole; a longitudinal screw rod matching with it is threaded in the longitudinal screw hole; the upper end of the longitudinal screw rod passes upward through the through hole and is provided with a limiting head that fits with the upper surface of the extension arm.
5. A handheld cold cutter according to claim 4, characterized in that: The longitudinal screw rod is externally threadedly connected with an anti-lost nut located between the extension arm and the fixing seat.
6. A handheld cold cutter according to claim 1, characterized in that: The adjusting cover is sleeved on the upper end of the square rod, and an upper adjusting distance is provided between the upper inner wall of the adjusting cover and the upper end surface of the square rod; an auxiliary screw hole is provided at the center of the upper end surface of the square rod; an auxiliary screw is provided at the center of the upper inner wall of the adjusting cover; the lower end of the auxiliary screw is screwed into the auxiliary screw hole, and a lower adjusting distance is provided between the lower end surface of the auxiliary screw and the bottom of the auxiliary screw hole.
7. A handheld cold cutter according to claim 1, characterized in that: A screw joint is arranged at the center of the lower end surface of the square rod; and a screw connection hole which is screwed to the screw joint is arranged on the upper surface of the pressure plate.
8. The handheld cold cutter according to claim 1, characterized in that: An introduction arc surface is provided at the lower portion of the U-shaped introduction port.
9. The handheld cold cutter according to claim 1, characterized in that: The fixing structure includes a plurality of rear through holes arranged on the plug block; the front side wall of the cover is provided with a plurality of front through holes intersecting with the rear through holes; the rear inner wall of the slot is provided with a fixing screw hole coaxial with the rear through hole; a fixing screw passes through the front through hole and the rear through hole in sequence backwards and is screwed into the fixing screw hole, and the head of the fixing screw is pressed on the front side wall of the cover.