Saw band positioning and guiding structure

Abstract

The invention discloses a saw band positioning and guiding structure and aims to overcome the defects that the saw cutting effect and the service life of a saw band are affected due to poor positioning and guiding effects of the saw band. The device comprises a driving wheel, a driven wheel and two guide arms which are mounted on a saw frame, a saw belt is in transmission connection between the driving wheel and the driven wheel, the driving wheel and the driven wheel are rotationally connected with a driving shaft and a driven shaft respectively, the driving shaft is sleeved with a positioning sleeve, an ejector rod extending towards the driven wheel is arranged on the positioning sleeve, and the ejector rod is supported on the saw frame. The driven shaft is connected with a tensioning mechanism and a jacking mechanism which are oppositely arranged left and right; the two guide arms are each provided with a guide positioning assembly used for clamping the saw band. According to the saw band positioning and guiding structure, the positioning and guiding effects of the saw band are good, the sawing effect on bars is guaranteed, and the service life of the saw band can be prolonged.

Description

Technical Field

[0001] This invention relates to the field of sawing technology, and more specifically, to a saw band positioning and guiding structure. Background Technology

[0002] When a sawing machine cuts bars, the saw blade rotates, and the saw teeth on the blade contact the bars to be cut, thus cutting them. By positioning and guiding the saw blade, the cut section is kept vertical, ensuring the flatness of the cut end face of the bar. However, during operation, the positioning and guiding effect of the saw blade is poor, affecting the sawing effect and the lifespan of the saw blade. Chinese patent application number 2015108892336 discloses a sawing machine that can cut the workpiece placed in a gap when the cutting blade moves downwards. A through groove is located directly below the cutting blade so that the finished product can flow from the through groove into the receiving chamber. However, it does not provide good guidance and positioning for the cutting blade, affecting the sawing effect and the lifespan of the cutting blade. Summary of the Invention

[0003] To overcome the above shortcomings, the present invention provides a saw blade positioning and guiding structure, which has good positioning and guiding effect of saw blade, ensures sawing effect, and helps to extend the service life of saw blade.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a saw band positioning and guiding structure, including a drive wheel, a driven wheel, and two guide arms mounted on a saw frame, the saw band being driven and connected between the drive wheel and the driven wheel, the drive wheel and the driven wheel being rotatably connected to a drive shaft and a driven shaft respectively, the drive shaft being fitted with a positioning sleeve, the positioning sleeve being provided with a top rod extending toward the driven wheel, the top rod being supported on the saw frame, the driven shaft being connected to a tensioning mechanism and a clamping mechanism arranged opposite to each other on the left and right; both guide arms are provided with guide positioning components for clamping the saw band.

[0005] The drive wheel rotates, driving the saw band to move. The saw band performs sawing as it moves around the drive and driven wheels. During the drive wheel's rotation, the push rod supports the drive shaft, improving its smoothness, reducing bearing wear, and thus ensuring the smoothness of the saw band's operation, which helps extend its service life. Tensioning and jacking mechanisms are located on the left and right sides of the driven shaft, respectively. These mechanisms tension the saw band while ensuring the smoothness of the force on both sides of the driven shaft, reducing bearing wear, improving saw band smoothness, and extending saw band service life. Guide and positioning components are installed on both guide arms to clamp the saw band, ensuring the cut segment is vertical, thus guaranteeing the flatness of the cut surface and the sawing effect. The saw band positioning and guiding structure in this patent application provides excellent positioning and guiding of the saw band, ensuring the sawing effect on the bar material and extending the saw band's service life.

[0006] Preferably, the guide positioning assembly is provided with two oppositely arranged clamping plates and two oppositely arranged guide wheels. The two clamping plates clamp and position the saw blade, and the two guide wheels are staggered, with the outer walls of the two guide wheels close to both sides of the saw blade.

[0007] The two clamping plates on the guide positioning assembly hold and position the saw blade, ensuring that the sawing section of the saw blade is in a vertical position. The outer walls of the two guide wheels are close to both sides of the saw blade to guide it. The two guide wheels are staggered, so that the two guide wheels guide the saw blade twice in succession, avoiding excessive resistance during the guidance process when the saw blade is clamped between the two guide wheels, which could damage the saw blade.

[0008] Preferably, wear-resistant strips are provided on both the left and right edges of the clamping plate surface, and several cooling grooves are provided at intervals on the surface of the wear-resistant strips. An automatic rotating nozzle is installed on the clamping plate and is located between the two wear-resistant strips. The cooling medium is introduced into the automatic rotating nozzle so that the automatic rotating nozzle sprays out the cooling medium while rotating.

[0009] The wear-resistant strip clamps and positions the saw blade, offering excellent wear resistance and a long service life. Cooling grooves on the wear-resistant strip reduce the contact area with the saw blade, thus minimizing frictional heat. Cooling medium is introduced into an automatically rotating nozzle, which sprays cooling medium onto both the wear-resistant strip and the saw blade as it rotates, preventing overheating and further extending their lifespan. Furthermore, the cooling medium is sprayed outwards from the cooling grooves, continuing to hit the saw blade surface and enhancing the cooling effect. Due to the automatically rotating nozzle, the cooling medium can also be sprayed downwards, effectively removing chips carried on the saw blade's edge teeth.

[0010] Preferably, the cooling medium is coolant or airflow.

[0011] Different cooling media can be selected according to needs, offering flexibility and convenience.

[0012] Preferably, the guide positioning assembly is rotatably connected to the adjusting column corresponding to the guide wheel. The guide wheel is rotatably mounted on the adjusting column, and the rotation center of the guide wheel is offset from the rotation center of the adjusting column. The distance between the guide wheel and the saw blade surface is adjusted by rotating the adjusting column.

[0013] The saw blade is a consumable and requires regular replacement and maintenance. During saw blade assembly, the position of the guide rollers needs to be adjusted. Rotate the adjusting pin to move the outer wall of the guide rollers closer to the saw blade surface, ensuring the outer wall of the guide rollers is close to the saw blade surface without contacting it. After adjustment, tighten the adjusting pin.

[0014] In another embodiment, two relatively sliding adjustment seats are installed on the guide positioning assembly. Two guide wheels are rotatably mounted on the two adjustment seats respectively. A sliding connection positioning clamp is installed on the adjustment seat. The distance by which the end face of the positioning clamp protrudes from the outer wall of the guide wheel is equal to the set distance from the outer wall of the guide wheel to the saw blade.

[0015] The gap between the outer wall of the guide wheel and the surface of the saw blade is very small, making it difficult to adjust the gap by directly pressing the outer wall of the guide wheel against the saw blade surface. This operation often requires experienced personnel. In this solution, however, when adjusting the guide wheel position, the saw blade is first clamped between the two clamping plates. Then, the position of the adjusting seat is slid until the ends of the two positioning clamps abut against the two sides of the saw blade. At this point, the gap between the outer wall of the guide wheel and the side of the saw blade meets the requirements. Then, the adjusting seat is locked, and the positioning clamps are slid away from the saw blade to separate them. The guide wheel is now in place. The adjustment process is simple, even for novice operators, and the adjustment of the gap between the outer wall of the guide wheel and the side of the saw blade is highly accurate.

[0016] Preferably, a pressure roller is provided on the guide positioning component, and the pressure roller presses on the upper edge of the saw blade.

[0017] During the sawing process, the upper edge of the saw blade presses against the pressure roller to ensure reliable sawing.

[0018] Preferably, two opposing mounting posts are rotatably connected to the guide positioning assembly near the driven wheel side, a positioning spring is connected between the upper parts of the two mounting posts, and pulleys are installed at the lower parts of the two mounting posts, with the two pulleys respectively abutting against both sides of the saw blade.

[0019] Before the saw blade is output from the driven wheel to the guide wheel, it is first guided and positioned by the feed wheel. The mounting posts can rotate, and a positioning spring is installed between the two mounting posts. Therefore, the feed wheel can deflect, so that the feed wheel makes soft contact with the surface of the saw blade, avoiding excessive hard contact resistance that could damage the saw blade.

[0020] Preferably, a rack is provided on the guide arm, and a gear and a drive piston cylinder are installed on the saw frame. The gear is clamped between two racks, and both racks mesh with the gear for transmission. The extension rod of the drive piston cylinder is connected to a guide arm.

[0021] The distance between the two guide arms is adjusted according to the thickness of the bar stock. During adjustment, the drive piston cylinder moves one guide arm, and through the meshing of the rack and pinion, the other guide arm moves synchronously, causing the two guide arms to move closer to or further apart from each other.

[0022] Preferably, the two guide positioning components are provided with detection arms extending in opposite directions, and two distance measuring sensors are installed on the detection arms at intervals. The two distance measuring sensors measure the distance at the upper and lower positions of the saw blade surface to determine the degree of inclination of the saw blade.

[0023] The section of the saw blade between the two guide and positioning components is the sawing segment. During sawing, this segment must remain vertical to ensure optimal sawing results. Two distance sensors, spaced vertically apart, detect the distance between the upper and lower parts of the saw blade in the vertical direction and feed the results back to the saw control system. The difference in distance is used to determine the degree of tilt on the saw blade surface. When the difference exceeds a set value, the saw blade is tilted too much and fails to meet sawing requirements. The saw control system issues a warning or stops the machine to promptly troubleshoot and minimize losses.

[0024] Compared with the prior art, the beneficial effects of the present invention are: (1) During the operation of the saw belt, the driving wheel and the driven wheel are balanced, which ensures the smooth transmission of the saw belt and helps to extend the service life of the saw belt; (2) The saw belt has good guiding and positioning effects during operation, which helps to ensure the sawing effect, prevent the saw belt from wearing out too quickly, and extend the service life; (3) A cooling structure is set on the clamping plate. When the saw belt is clamped between the two clamping plates, the cooling effect is good, which avoids the saw belt and wear strip from overheating and helps to extend the service life; (4) The distance adjustment between the guide wheel and the surface of the saw belt is simple and convenient, and the distance size can be precisely controlled. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention.

[0026] Figure 2 This is a side view of the present invention.

[0027] Figure 3 This is an exploded view of the guide and positioning component near the drive wheel side of the present invention.

[0028] Figure 4 This is an exploded view of the guide positioning assembly near the driven wheel side of the present invention.

[0029] Figure 5 This is a side view of the guide positioning component of Embodiment 2 of the present invention.

[0030] Figure 6 This is a diagram of the clamp connection in Embodiment 3 of the present invention.

[0031] Figure 7 This is a connection diagram of the adjustment seat in Embodiment 4 of the present invention.

[0032] In the diagram: 1. Saw frame, 2. Drive wheel, 3. Driven wheel, 4. Guide arm, 5. Positioning sleeve, 6. Top rod, 7. Support, 8. Tensioning mechanism, 9. Top clamping mechanism, 10. Tensioning cylinder, 11. Tensioning seat, 12. Top clamping cylinder, 13. Top clamping seat, 14. Guide positioning assembly, 15. Clamping plate, 16. Guide wheel, 17. Pressure roller, 18. Wear-resistant strip, 19. Adjusting column, 20. Adjusting seat, 21. Guide rail, 22. Screw, 23. Positioning clamp, 24. Return spring, 25. Guide column, 26. Fastening screw, 27. Mounting column, 28. Positioning spring, 29. Belt pulley, 30. Insertion column, 31. Detection arm, 32. Distance sensor, 33. Cooling groove, 34. Automatic rotating nozzle, 35. Rack, 36. Gear, 37. Drive piston cylinder. Detailed Implementation

[0033] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1: A saw blade positioning and guiding structure (see...) Figure 1 , Figure 2 , Figure 3 , Figure 4 The saw frame 1 includes a drive wheel 2, a driven wheel 3, and two guide arms 4 mounted on the saw frame 1. The drive wheel 2 and driven wheel 3 are respectively mounted on the left and right sides of the saw frame 1. The saw band drive is connected between the drive wheel 2 and driven wheel 3. The drive wheel 2 and driven wheel 3 are rotatably connected to the drive shaft and driven shaft, respectively. Both the drive shaft and driven shaft are rotatably mounted on the saw frame 1. The drive shaft is fitted with a positioning sleeve 5. One end of the drive shaft is connected to the output end of the reducer, and the other end of the drive shaft is rotatably fitted with the positioning sleeve 5. The positioning sleeve 5 is provided with a push rod 6 extending towards the driven wheel 3. The push rod 6 is supported on the saw frame 1. The saw frame 1 is provided with a support 7 corresponding to the push rod 6. The push rod 6 and the support 7 are fastened together to achieve support. The driven shaft is connected to a tensioning mechanism 8 and a top-tightening mechanism 9 arranged on the left and right sides respectively. During the tensioning process of the tensioning mechanism 8 on the driven wheel 3, the top-tightening mechanism 9 works synchronously, thereby balancing the forces on the left and right sides of the driven shaft and ensuring the smoothness of the saw band drive. The tensioning mechanism 8 includes a tensioning cylinder 10 and a tensioning seat 11. The tensioning cylinder 10 is fixedly mounted on the saw frame 1, and the tensioning seat 11 is slidably mounted on the saw frame 1. One end of the driven shaft is rotatably mounted on the tensioning seat 11. The clamping mechanism 9 includes a clamping cylinder 12 and a clamping seat 13. The clamping cylinder 12 is rotatably mounted on the saw frame 1. The telescopic rod of the clamping cylinder 12 is connected to the clamping seat 13, and the other end of the driven shaft is rotatably connected to the clamping seat 13.

[0034] Both guide arms 4 are equipped with guide and positioning components 14 for clamping the saw blade. Each guide and positioning component 14 has two opposing clamping plates 15 and two opposing guide wheels 16. The clamping plates 15 clamp and position the saw blade, while the guide wheels 16 are staggered, with their outer walls close to both sides of the saw blade. Two pressure rollers 17 are also provided on the guide and positioning components 14, pressing against the upper edge of the saw blade and positioned above the clamping plates 15. Wear-resistant strips 18 are provided on both the left and right edges of the clamping plates 15, contacting and clamping the saw blade surface.

[0035] An adjusting column 19, corresponding to the guide wheel 16, is rotatably connected to the guide positioning assembly 14. The guide wheel 16 is rotatably mounted on the adjusting column 19, and the rotation center of the guide wheel 16 is offset from the rotation center of the adjusting column 19. Rotating the adjusting column 19 adjusts the distance between the guide wheel 16 and the saw blade surface. The saw blade is a consumable and requires regular replacement and maintenance; therefore, the position of the guide wheel 16 needs to be adjusted during saw blade assembly. By rotating the adjusting column 19, the outer wall of the guide wheel 16 moves closer to the saw blade surface, bringing it close to the saw blade surface without contacting it. After adjustment, the adjusting column 19 is locked.

[0036] Two opposing mounting posts 27 are rotatably connected to the guide positioning assembly 14 near the driven wheel 3. A positioning spring 28 is connected between the upper parts of the two mounting posts 27, and a pulley 29 is installed at the lower part of each mounting post 27. The two pulleys 29 abut against both sides of the saw blade. An insert post 30 is connected between the upper parts of the two mounting posts 27, and the insert post 30 is movably inserted into the mounting posts 27. The positioning spring 28 is fitted onto the insert post 30. Before the saw blade is output from the driven wheel 3 to the guide wheel 16, it is initially guided and positioned by the pulleys 29. Since the mounting posts 27 can rotate and the positioning spring 28 is installed between the two mounting posts 27, the pulleys 29 can deflect, making soft contact between the pulleys 29 and the surface of the saw blade, avoiding excessive resistance from hard contact that could damage the saw blade.

[0037] A rack 35 is mounted on the guide arm 4, and a gear 36 and a drive piston cylinder 37 are mounted on the saw frame 1. The gear 36 rotates and is clamped between two racks 35, with both racks 35 meshing with the gear 36 for transmission. The extension rod of the drive piston cylinder 37 is connected to one guide arm 4. The distance between the two guide arms 4 is adjusted according to the thickness of the bar. During adjustment, the drive piston cylinder 37 moves one guide arm 4, and through the meshing transmission of the rack 35 and the gear 36, the other guide arm 4 moves synchronously, causing the two guide arms 4 to move closer to or further apart.

[0038] The drive wheel 2 rotates, driving the saw band to move. The saw band performs sawing as it moves around the drive wheel 2 and the driven wheel 3. During the rotation of the drive wheel 2, the push rod 6 supports the drive shaft, improving its smoothness and reducing bearing wear, thus ensuring the smoothness of the saw band's operation and extending its service life. Tensioning mechanisms 8 and push-fitting mechanisms 9 are located on the left and right sides of the driven shaft, respectively. These mechanisms tension the saw band while ensuring the smoothness of the force on both sides of the driven shaft, reducing bearing wear, improving the smoothness of the saw band's operation, and extending its service life. Guide positioning components 14 are installed on both guide arms 4 to clamp the saw band, ensuring the cut segment is vertical, thus guaranteeing the flatness of the cut surface and the sawing effect.

[0039] Example 2: A saw blade positioning and guiding structure (see...) Figure 1 , Figure 2 , Figure 5 The saw frame 1 includes a drive wheel 2, a driven wheel 3, and two guide arms 4 mounted on the saw frame 1. The drive wheel 2 and driven wheel 3 are respectively mounted on the left and right sides of the saw frame 1. The saw band drive is connected between the drive wheel 2 and driven wheel 3. The drive wheel 2 and driven wheel 3 are rotatably connected to the drive shaft and driven shaft, respectively. Both the drive shaft and driven shaft are rotatably mounted on the saw frame 1. The drive shaft is fitted with a positioning sleeve 5. One end of the drive shaft is connected to the output end of the reducer, and the other end of the drive shaft is rotatably fitted with the positioning sleeve 5. The positioning sleeve 5 is provided with a push rod 6 extending towards the driven wheel 3. The push rod 6 is supported on the saw frame 1. The saw frame 1 is provided with a support 7 corresponding to the push rod 6. The push rod 6 and the support 7 are fastened together to achieve support. The driven shaft is connected to a tensioning mechanism 8 and a top-tightening mechanism 9 arranged on the left and right sides respectively. During the tensioning process of the tensioning mechanism 8 on the driven wheel 3, the top-tightening mechanism 9 works synchronously, thereby balancing the forces on the left and right sides of the driven shaft and ensuring the smoothness of the saw band drive. The tensioning mechanism 8 includes a tensioning cylinder 10 and a tensioning seat 11. The tensioning cylinder 10 is fixedly mounted on the saw frame 1, and the tensioning seat 11 is slidably mounted on the saw frame 1. One end of the driven shaft is rotatably mounted on the tensioning seat 11. The clamping mechanism 9 includes a clamping cylinder 12 and a clamping seat 13. The clamping cylinder 12 is rotatably mounted on the saw frame 1. The telescopic rod of the clamping cylinder 12 is connected to the clamping seat 13, and the other end of the driven shaft is rotatably connected to the clamping seat 13.

[0040] Both guide arms 4 are equipped with guide and positioning components 14 for clamping the saw blade. Each guide and positioning component 14 has two opposing clamping plates 15 and two opposing guide wheels 16. The clamping plates 15 clamp and position the saw blade, while the guide wheels 16 are staggered, with their outer walls close to both sides of the saw blade. Two pressure rollers 17 are also provided on the guide and positioning components 14, pressing against the upper edge of the saw blade and positioned above the clamping plates 15. Wear-resistant strips 18 are provided on both the left and right edges of the clamping plates 15, contacting and clamping the saw blade surface.

[0041] An adjusting column 19, corresponding to the guide wheel 16, is rotatably connected to the guide positioning assembly 14. The guide wheel 16 is rotatably mounted on the adjusting column 19, and the rotation center of the guide wheel 16 is offset from the rotation center of the adjusting column 19. Rotating the adjusting column 19 adjusts the distance between the guide wheel 16 and the saw blade surface. The saw blade is a consumable and requires regular replacement and maintenance; therefore, the position of the guide wheel 16 needs to be adjusted during saw blade assembly. By rotating the adjusting column 19, the outer wall of the guide wheel 16 moves closer to the saw blade surface, bringing it close to the saw blade surface without contacting it. After adjustment, the adjusting column 19 is locked.

[0042] Two opposing mounting posts 27 are rotatably connected to the guide positioning assembly 14 near the driven wheel 3. A positioning spring 28 is connected between the upper parts of the two mounting posts 27, and a pulley 29 is installed at the lower part of each mounting post 27. The two pulleys 29 abut against both sides of the saw blade. An insert post 30 is connected between the upper parts of the two mounting posts 27, and the insert post 30 is movably inserted into the mounting posts 27. The positioning spring 28 is fitted onto the insert post 30. Before the saw blade is output from the driven wheel 3 to the guide wheel 16, it is initially guided and positioned by the pulleys 29. Since the mounting posts 27 can rotate and the positioning spring 28 is installed between the two mounting posts 27, the pulleys 29 can deflect, making soft contact between the pulleys 29 and the surface of the saw blade, avoiding excessive resistance from hard contact that could damage the saw blade.

[0043] Two guide positioning components 14 are equipped with detection arms 31 extending in opposite directions. Two distance sensors 32, spaced vertically, are mounted on each detection arm 31. These sensors measure the distance between the upper and lower parts of the saw blade surface to determine the saw blade's tilt. The portion of the saw blade between the two guide positioning components 14 is the sawing section. During sawing, this section must remain vertical to ensure optimal sawing results. The two spaced-vertical distance sensors 32 detect the distance between the upper and lower parts of the saw blade in the vertical direction and feed the results back to the sawing control system. The difference in the detected distance is used to determine the tilt of the saw blade surface. When the difference exceeds a set value, the saw blade is tilted too much and fails to meet sawing requirements. The sawing control system issues a warning or stops the machine to promptly troubleshoot and minimize losses.

[0044] A rack 35 is mounted on the guide arm 4, and a gear 36 and a drive piston cylinder 37 are mounted on the saw frame 1. The gear 36 rotates and is clamped between two racks 35, with both racks 35 meshing with the gear 36 for transmission. The extension rod of the drive piston cylinder 37 is connected to one guide arm 4. The distance between the two guide arms 4 is adjusted according to the thickness of the bar. During adjustment, the drive piston cylinder 37 moves one guide arm 4, and through the meshing transmission of the rack 35 and the gear 36, the other guide arm 4 moves synchronously, causing the two guide arms 4 to move closer to or further apart.

[0045] The drive wheel 2 rotates, driving the saw band to move. The saw band performs sawing as it moves around the drive wheel 2 and the driven wheel 3. During the rotation of the drive wheel 2, the push rod 6 supports the drive shaft, improving its smoothness and reducing bearing wear, thus ensuring the smoothness of the saw band's operation and extending its service life. Tensioning mechanisms 8 and push-fitting mechanisms 9 are located on the left and right sides of the driven shaft, respectively. These mechanisms tension the saw band while ensuring the smoothness of the force on both sides of the driven shaft, reducing bearing wear, improving the smoothness of the saw band's operation, and extending its service life. Guide positioning components 14 are installed on both guide arms 4 to clamp the saw band, ensuring the cut segment is vertical, thus guaranteeing the flatness of the cut surface and the sawing effect.

[0046] Example 3: A saw blade positioning and guiding structure (see...) Figure 1 , Figure 2 , Figure 5 , Figure 6 The saw frame 1 includes a drive wheel 2, a driven wheel 3, and two guide arms 4 mounted on the saw frame 1. The drive wheel 2 and driven wheel 3 are respectively mounted on the left and right sides of the saw frame 1. The saw band drive is connected between the drive wheel 2 and driven wheel 3. The drive wheel 2 and driven wheel 3 are rotatably connected to the drive shaft and driven shaft, respectively. Both the drive shaft and driven shaft are rotatably mounted on the saw frame 1. The drive shaft is fitted with a positioning sleeve 5. One end of the drive shaft is connected to the output end of the reducer, and the other end of the drive shaft is rotatably fitted with the positioning sleeve 5. The positioning sleeve 5 is provided with a push rod 6 extending towards the driven wheel 3. The push rod 6 is supported on the saw frame 1. The saw frame 1 is provided with a support 7 corresponding to the push rod 6. The push rod 6 and the support 7 are fastened together to achieve support. The driven shaft is connected to a tensioning mechanism 8 and a top-tightening mechanism 9 arranged on the left and right sides respectively. During the tensioning process of the tensioning mechanism 8 on the driven wheel 3, the top-tightening mechanism 9 works synchronously, thereby balancing the forces on the left and right sides of the driven shaft and ensuring the smoothness of the saw band drive. The tensioning mechanism 8 includes a tensioning cylinder 10 and a tensioning seat 11. The tensioning cylinder 10 is fixedly mounted on the saw frame 1, and the tensioning seat 11 is slidably mounted on the saw frame 1. One end of the driven shaft is rotatably mounted on the tensioning seat 11. The clamping mechanism 9 includes a clamping cylinder 12 and a clamping seat 13. The clamping cylinder 12 is rotatably mounted on the saw frame 1. The telescopic rod of the clamping cylinder 12 is connected to the clamping seat 13, and the other end of the driven shaft is rotatably connected to the clamping seat 13.

[0047] Both guide arms 4 are equipped with guide and positioning components 14 for clamping the saw blade. Each guide and positioning component 14 has two opposing clamping plates 15 and two opposing guide wheels 16. The clamping plates 15 clamp and position the saw blade, while the guide wheels 16 are staggered, with their outer walls close to both sides of the saw blade. Two pressure rollers 17 are also provided on the guide and positioning components 14, pressing against the upper edge of the saw blade and positioned above the clamping plates 15. Wear-resistant strips 18 are provided on both the left and right edges of the clamping plates 15, contacting and clamping the saw blade surface.

[0048] An adjusting column 19, corresponding to the guide wheel 16, is rotatably connected to the guide positioning assembly 14. The guide wheel 16 is rotatably mounted on the adjusting column 19, and the rotation center of the guide wheel 16 is offset from the rotation center of the adjusting column 19. Rotating the adjusting column 19 adjusts the distance between the guide wheel 16 and the saw blade surface. The saw blade is a consumable and requires regular replacement and maintenance; therefore, the position of the guide wheel 16 needs to be adjusted during saw blade assembly. By rotating the adjusting column 19, the outer wall of the guide wheel 16 moves closer to the saw blade surface, bringing it close to the saw blade surface without contacting it. After adjustment, the adjusting column 19 is locked.

[0049] Two opposing mounting posts 27 are rotatably connected to the guide positioning assembly 14 near the driven wheel 3. A positioning spring 28 is connected between the upper parts of the two mounting posts 27, and a pulley 29 is installed at the lower part of each mounting post 27. The two pulleys 29 abut against both sides of the saw blade. An insert post 30 is connected between the upper parts of the two mounting posts 27, and the insert post 30 is movably inserted into the mounting posts 27. The positioning spring 28 is fitted onto the insert post 30. Before the saw blade is output from the driven wheel 3 to the guide wheel 16, it is initially guided and positioned by the pulleys 29. Since the mounting posts 27 can rotate and the positioning spring 28 is installed between the two mounting posts 27, the pulleys 29 can deflect, making soft contact between the pulleys 29 and the surface of the saw blade, avoiding excessive resistance from hard contact that could damage the saw blade.

[0050] Two guide positioning components 14 are equipped with detection arms 31 extending in opposite directions. Two distance sensors 32, spaced vertically, are mounted on each detection arm 31. These sensors measure the distance between the upper and lower parts of the saw blade surface to determine the saw blade's tilt. The portion of the saw blade between the two guide positioning components 14 is the sawing section. During sawing, this section must remain vertical to ensure optimal sawing results. The two spaced-vertical distance sensors 32 detect the distance between the upper and lower parts of the saw blade in the vertical direction and feed the results back to the sawing control system. The difference in the detected distance is used to determine the tilt of the saw blade surface. When the difference exceeds a set value, the saw blade is tilted too much and fails to meet sawing requirements. The sawing control system issues a warning or stops the machine to promptly troubleshoot and minimize losses.

[0051] Wear-resistant strips 18 are provided on both the left and right edges of the clamping plate 15. Several cooling grooves 33 are spaced apart on the surface of the wear-resistant strips 18. An automatic rotating nozzle 34 is installed on the clamping plate 15. The automatic rotating nozzle 34 has several circumferentially spaced jetting holes and is positioned between two wear-resistant strips 18. An inlet pipe is installed on the clamping plate 15 and is connected to the automatic rotating nozzle 34. Cooling medium flows through the inlet pipe and is pressurized. The cooling medium is introduced into the automatic rotating nozzle 34, causing it to rotate and spray cooling medium simultaneously. The cooling medium can be coolant or airflow. The wear-resistant strips 18 clamp and position the saw blade, providing good wear resistance and a long service life. Cooling grooves 33 are provided on the wear-resistant strip 18, reducing the contact area with the saw blade and thus reducing frictional heat. Cooling medium is introduced into the automatic rotating nozzle 34, which sprays cooling medium while rotating. The cooling medium is sprayed onto the wear-resistant strip 18 and the saw blade, achieving cooling and preventing overheating of both, thus extending their service life. Furthermore, the cooling medium is sprayed outwards from the cooling grooves, continuing to spray onto the saw blade surface, improving the cooling effect. Due to the automatic rotating nozzle 34, the cooling medium can also be sprayed downwards, thereby removing chips carried on the saw blade's edge teeth.

[0052] A rack 35 is mounted on the guide arm 4, and a gear 36 and a drive piston cylinder 37 are mounted on the saw frame 1. The gear 36 rotates and is clamped between two racks 35, with both racks 35 meshing with the gear 36 for transmission. The extension rod of the drive piston cylinder 37 is connected to one guide arm 4. The distance between the two guide arms 4 is adjusted according to the thickness of the bar. During adjustment, the drive piston cylinder 37 moves one guide arm 4, and through the meshing transmission of the rack 35 and the gear 36, the other guide arm 4 moves synchronously, causing the two guide arms 4 to move closer to or further apart.

[0053] The drive wheel 2 rotates, driving the saw band to move. The saw band performs sawing as it moves around the drive wheel 2 and the driven wheel 3. During the rotation of the drive wheel 2, the push rod 6 supports the drive shaft, improving its smoothness and reducing bearing wear, thus ensuring the smoothness of the saw band's operation and extending its service life. Tensioning mechanisms 8 and push-fitting mechanisms 9 are located on the left and right sides of the driven shaft, respectively. These mechanisms tension the saw band while ensuring the smoothness of the force on both sides of the driven shaft, reducing bearing wear, improving the smoothness of the saw band's operation, and extending its service life. Guide positioning components 14 are installed on both guide arms 4 to clamp the saw band, ensuring the cut segment is vertical, thus guaranteeing the flatness of the cut surface and the sawing effect.

[0054] Example 4: A saw blade positioning and guiding structure (see...) Figure 6 , Figure 7The saw frame 1 includes a drive wheel 2, a driven wheel 3, and two guide arms 4 mounted on the saw frame 1. The drive wheel 2 and driven wheel 3 are respectively mounted on the left and right sides of the saw frame 1. The saw band drive is connected between the drive wheel 2 and driven wheel 3. The drive wheel 2 and driven wheel 3 are rotatably connected to the drive shaft and driven shaft, respectively. Both the drive shaft and driven shaft are rotatably mounted on the saw frame 1. The drive shaft is fitted with a positioning sleeve 5. One end of the drive shaft is connected to the output end of the reducer, and the other end of the drive shaft is rotatably fitted with the positioning sleeve 5. The positioning sleeve 5 is provided with a push rod 6 extending towards the driven wheel 3. The push rod 6 is supported on the saw frame 1. The saw frame 1 is provided with a support 7 corresponding to the push rod 6. The push rod 6 and the support 7 are fastened together to achieve support. The driven shaft is connected to a tensioning mechanism 8 and a top-tightening mechanism 9 arranged on the left and right sides respectively. During the tensioning process of the tensioning mechanism 8 on the driven wheel 3, the top-tightening mechanism 9 works synchronously, thereby balancing the forces on the left and right sides of the driven shaft and ensuring the smoothness of the saw band drive. The tensioning mechanism 8 includes a tensioning cylinder 10 and a tensioning seat 11. The tensioning cylinder 10 is fixedly mounted on the saw frame 1, and the tensioning seat 11 is slidably mounted on the saw frame 1. One end of the driven shaft is rotatably mounted on the tensioning seat 11. The clamping mechanism 9 includes a clamping cylinder 12 and a clamping seat 13. The clamping cylinder 12 is rotatably mounted on the saw frame 1. The telescopic rod of the clamping cylinder 12 is connected to the clamping seat 13, and the other end of the driven shaft is rotatably connected to the clamping seat 13.

[0055] Both guide arms 4 are equipped with guide and positioning components 14 for clamping the saw blade. Each guide and positioning component 14 has two opposing clamping plates 15 and two opposing guide wheels 16. The clamping plates 15 clamp and position the saw blade, while the guide wheels 16 are staggered, with their outer walls close to both sides of the saw blade. Two pressure rollers 17 are also provided on the guide and positioning components 14, pressing against the upper edge of the saw blade and positioned above the clamping plates 15. Wear-resistant strips 18 are provided on both the left and right edges of the clamping plates 15, contacting and clamping the saw blade surface.

[0056] Two opposing sliding adjustment seats 20 are mounted on the guide positioning assembly 14. A guide rail 21 and a screw 22 are provided on the guide positioning assembly 14. Both adjustment seats 20 are slidably connected to the guide rail 21. The screw 22 has threaded sections with opposite helical directions at both ends, which are threadedly connected to the two adjustment seats 20 respectively. Rotation of the screw 22 causes the two adjustment seats 20 to move closer or further apart. Two guide wheels 16 are rotatably mounted on the two adjustment seats 20. A slidingly connected positioning clamp 23 is mounted on the adjustment seat 20. The distance by which the end face of the positioning clamp 23 protrudes from the outer wall of the guide wheel 16 is equal to the set distance from the outer wall of the guide wheel 16 to the saw blade. A return spring 24 is installed between the positioning clamp 23 and the adjusting seat 20. Two guide posts 25 are provided on the adjusting seat 20. The positioning clamp 23 is movably inserted into the guide posts 25. A limiting head is provided at the outer end of the guide post 25 to limit the positioning clamp 23. A fastening screw 26 is connected between the positioning clamp 23 and the adjusting seat 20. The positioning clamp 23 has a U-shaped structure. After the fastening screw 26 is tightened, the bottom of the positioning clamp 23 is in contact with the outer end of the adjusting seat 20 for positioning. At this time, the distance by which the end face of the positioning clamp 23 protrudes from the outer wall of the guide wheel 16 is equal to the set distance from the outer wall of the guide wheel 16 to the saw blade. A locking screw is connected to the guide positioning assembly 14. The locking screw abuts against the adjusting seat 20 to position the adjusting seat 20.

[0057] The gap between the outer wall of the guide wheel 16 and the surface of the saw blade is very small. Adjusting the gap by directly pressing the outer wall of the guide wheel 16 against the surface of the saw blade is difficult and often requires experienced operators. In this solution, when adjusting the position of the guide wheel 16, the saw blade is first clamped between the two clamping plates 15. Then, the screw 22 is rotated to move the two adjusting seats 20 closer together until the ends of the two positioning clamps 23 abut against the two sides of the saw blade. At this point, the gap between the outer wall of the guide wheel 16 and the side of the saw blade meets the requirements. Then, the adjusting seats 20 are locked, and the fastening screws 26 are loosened, allowing the positioning clamps 23 to slide away from the saw blade, separating them from the saw blade. The guide wheel 16 is now in place. The adjustment process is simple, even for novice operators, and the adjustment of the gap between the outer wall of the guide wheel 16 and the side of the saw blade is highly accurate.

[0058] Two opposing mounting posts 27 are rotatably connected to the guide positioning assembly 14 near the driven wheel 3. A positioning spring 28 is connected between the upper parts of the two mounting posts 27, and a pulley 29 is installed at the lower part of each mounting post 27. The two pulleys 29 abut against both sides of the saw blade. An insert post 30 is connected between the upper parts of the two mounting posts 27, and the insert post 30 is movably inserted into the mounting posts 27. The positioning spring 28 is fitted onto the insert post 30. Before the saw blade is output from the driven wheel 3 to the guide wheel 16, it is initially guided and positioned by the pulleys 29. Since the mounting posts 27 can rotate and the positioning spring 28 is installed between the two mounting posts 27, the pulleys 29 can deflect, making soft contact between the pulleys 29 and the surface of the saw blade, avoiding excessive resistance from hard contact that could damage the saw blade.

[0059] Two guide positioning components 14 are equipped with detection arms 31 extending in opposite directions. Two distance sensors 32, spaced vertically, are mounted on each detection arm 31. These sensors measure the distance between the upper and lower parts of the saw blade surface to determine the saw blade's tilt. The portion of the saw blade between the two guide positioning components 14 is the sawing section. During sawing, this section must remain vertical to ensure optimal sawing results. The two spaced-vertical distance sensors 32 detect the distance between the upper and lower parts of the saw blade in the vertical direction and feed the results back to the sawing control system. The difference in the detected distance is used to determine the tilt of the saw blade surface. When the difference exceeds a set value, the saw blade is tilted too much and fails to meet sawing requirements. The sawing control system issues a warning or stops the machine to promptly troubleshoot and minimize losses.

[0060] Wear-resistant strips 18 are provided on both the left and right edges of the clamping plate 15. Several cooling grooves 33 are spaced apart on the surface of the wear-resistant strips 18. An automatic rotating nozzle 34 is installed on the clamping plate 15, positioned between the two wear-resistant strips 18. An inlet pipe is installed on the clamping plate 15, connected to the automatic rotating nozzle 34. Cooling medium flows through the inlet pipe, carrying pressure. The cooling medium is introduced into the automatic rotating nozzle 34, causing it to rotate and spray out cooling medium. The cooling medium can be a coolant or airflow. The wear-resistant strips 18 clamp and position the saw blade, exhibiting good wear resistance and a long service life. The cooling grooves 33 on the wear-resistant strips 18 reduce the contact area with the saw blade, thereby reducing frictional heat. The cooling medium is introduced into the automatic rotating nozzle 34, causing it to rotate and spray out cooling medium onto the wear-resistant strips 18 and the saw blade, achieving cooling and preventing overheating of both, thus extending their service life. Furthermore, the cooling medium is sprayed outward from the cooling slot and continues to spray onto the surface of the saw blade, improving the cooling effect. Due to the automatic rotating nozzle 34, the cooling medium can also be sprayed downward, thereby removing chips carried on the saw blade edge teeth.

[0061] A rack 35 is mounted on the guide arm 4, and a gear 36 and a drive piston cylinder 37 are mounted on the saw frame 1. The gear 36 rotates and is clamped between two racks 35, with both racks 35 meshing with the gear 36 for transmission. The extension rod of the drive piston cylinder 37 is connected to one guide arm 4. The distance between the two guide arms 4 is adjusted according to the thickness of the bar. During adjustment, the drive piston cylinder 37 moves one guide arm 4, and through the meshing transmission of the rack 35 and the gear 36, the other guide arm 4 moves synchronously, causing the two guide arms 4 to move closer to or further apart.

[0062] The drive wheel 2 rotates, driving the saw band to move. The saw band performs sawing as it moves around the drive wheel 2 and the driven wheel 3. During the rotation of the drive wheel 2, the push rod 6 supports the drive shaft, improving its smoothness and reducing bearing wear, thus ensuring the smoothness of the saw band's operation and extending its service life. Tensioning mechanisms 8 and push-fitting mechanisms 9 are located on the left and right sides of the driven shaft, respectively. These mechanisms tension the saw band while ensuring the smoothness of the force on both sides of the driven shaft, reducing bearing wear, improving the smoothness of the saw band's operation, and extending its service life. Guide positioning components 14 are installed on both guide arms 4 to clamp the saw band, ensuring the cut segment is vertical, thus guaranteeing the flatness of the cut surface and the sawing effect.

[0063] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications may be made without departing from the technical solutions described in the claims.

Claims

1. A saw blade positioning and guiding structure, characterized in that, It includes a drive wheel, a driven wheel, and two guide arms mounted on the saw frame. The saw band drive is connected between the drive wheel and the driven wheel. The drive wheel and the driven wheel are rotatably connected to the drive shaft and the driven shaft, respectively. The drive shaft is fitted with a positioning sleeve. The positioning sleeve is provided with a push rod extending towards the driven wheel. The push rod is supported on the saw frame. The driven shaft is connected to a tensioning mechanism and a clamping mechanism arranged on the left and right sides. Both guide arms are provided with guide positioning components for clamping the saw band.

2. The saw band positioning and guiding structure according to claim 1, characterized in that, The guide positioning assembly is equipped with two opposing clamping plates and two opposing guide wheels. The two clamping plates clamp and position the saw blade, and the two guide wheels are staggered, with their outer walls close to both sides of the saw blade.

3. The saw band positioning and guiding structure according to claim 2, characterized in that, Wear-resistant strips are provided on both the left and right edges of the clamping plate surface. Several cooling grooves are provided at intervals on the surface of the wear-resistant strips. An automatic rotating nozzle is installed on the clamping plate and is located between the two wear-resistant strips. The cooling medium is introduced into the automatic rotating nozzle so that the automatic rotating nozzle sprays out the cooling medium while rotating.

4. The saw band positioning and guiding structure according to claim 3, characterized in that, The cooling medium is either coolant or airflow.

5. A saw band positioning and guiding structure according to claim 2, characterized in that, The guide positioning assembly is rotatably connected to the adjusting column corresponding to the guide wheel. The guide wheel is rotatably mounted on the adjusting column. The rotation center of the guide wheel is offset from the rotation center of the adjusting column. Rotating the adjusting column adjusts the distance between the guide wheel and the saw blade surface.

6. A saw band positioning and guiding structure according to claim 2, characterized in that, Two sliding adjustment seats are installed on the guide positioning assembly. Two guide wheels are rotatably mounted on the two adjustment seats. A sliding connection positioning clamp is installed on the adjustment seat. The distance by which the end face of the positioning clamp protrudes from the outer wall of the guide wheel is equal to the set distance from the outer wall of the guide wheel to the saw blade.

7. A saw band positioning and guiding structure according to claim 1, characterized in that, A pressure roller is installed on the guide positioning component, and the pressure roller presses on the upper edge of the saw blade.

8. A saw band positioning and guiding structure according to claim 1, characterized in that, Two opposing mounting posts are rotatably connected to the guide positioning assembly near the driven wheel. A positioning spring is connected between the upper parts of the two mounting posts, and pulleys are installed at the lower parts of the two mounting posts. The two pulleys abut against both sides of the saw blade.

9. A saw blade positioning and guiding structure according to any one of claims 1 to 8, characterized in that, A rack is installed on the guide arm, and a gear and a drive piston cylinder are installed on the saw frame. The gear is clamped between two racks, and both racks mesh with the gear for transmission. The extension rod of the drive piston cylinder is connected to a guide arm.

10. A saw blade positioning and guiding structure according to any one of claims 1 to 8, characterized in that, Two guide positioning components are equipped with detection arms that extend in opposite directions. Two distance sensors are installed on the detection arms, which measure the distance between the upper and lower parts of the saw blade surface to determine the degree of inclination of the saw blade.

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