A method for preventing the use of a clamping saw blade device by a cold saw machine

Abstract

The application discloses a kind of cold saw machine active prevention clamping saw blade use method, device includes vertical pressure mechanism, horizontal thrust pressure device, horizontal block device, reverse horizontal thrust device, the vertical pressure mechanism is 2 pieces, is set to above roller way;The vertical pressure mechanism is located between 2 pieces of saw blade;2 pieces of vertical pressure mechanism are respectively close to the working position of 2 pieces of saw blade;The vertical pressure mechanism is fixed with workshop ground;The horizontal thrust pressure device is set to the opposite side of saw blade;The horizontal thrust pressure device is 3 pieces, and it is between 2 pieces of saw blade in longitudinal direction;The horizontal thrust pressure device is fixed with frame by support I;Several horizontal block devices are set to the same side of saw blade;The horizontal block device is fixed with frame by support;The reverse horizontal thrust device is 2 pieces, is set to the same side of saw blade, and is respectively located at the outer end of 2 pieces of saw blade;The application is more suitable for cold sawing of multiple profile arrangements.

Description

Technical Field

[0001] This invention belongs to the field of metallurgical machinery and equipment technology, and further to the field of rolling processing equipment technology. Specifically, it relates to a device that is simple in structure, easy to adjust, reliable in use, and actively prevents the saw blade from getting stuck in a cold saw. Background Technology

[0002] The cold saw machine is a key piece of equipment in the profile production line, its function being to cut profiles to the required length. The saw blade is a consumable spare part; during normal production, the saw blade needs to be replaced after a certain number of cuts due to wear. The replaced saw blade can be reused after re-sharpening the cutting edges. The main reason for rapid saw blade wear is that the saw blade gets caught during the sawing process. This catching phenomenon frequently occurs during profile sawing. The reason for this is that the kerf between the profile being cut and the far end of the saw blade teeth tends to narrow, generating compressive stress on the side surface of the saw blade. During the sawing process, the profile being cut presses against one or both sides of the saw blade, increasing friction and sawing resistance. Unilateral pressure and catching can also cause axial load imbalance on the cold saw blade, increased vibration, and even spindle deformation. Saw blade catching in the cold saw machine directly leads to rapid saw blade heating, making it prone to thermal fatigue cracks, saw blade breakage, and accelerated wear, preventing the saw blade from reaching its required service life. This not only directly affects production efficiency, increases saw blade consumption, and raises production costs, but also makes the motor that drives the saw blade prone to overcurrent and overload, even overheating or overload tripping, seriously affecting the sawing production of the cold saw machine. Therefore, researching and developing a device that is simple in structure, easy to adjust, reliable in use, and actively prevents the saw blade from getting stuck in the cold saw machine is the key to solving this problem. Summary of the Invention

[0003] The purpose of this invention is to provide a device that is simple in structure, easy to adjust, reliable in use, and actively prevents the saw blade from getting stuck in a cold saw.

[0004] The objective of this invention is achieved as follows: It includes a vertical pressing mechanism, a horizontal thrust pressing device, a horizontal stop device, and a reverse horizontal thrust device. Two vertical pressing mechanisms are arranged above the roller conveyor; these two mechanisms are longitudinally positioned between two saw blades; each mechanism is close to the working position of one saw blade; the vertical pressing mechanisms are fixed to the workshop floor via anchor bolts. The horizontal thrust pressing device is located on the opposite side of the saw blade; three horizontal thrust pressing devices are longitudinally positioned between two saw blades; these devices are fixed to the frame via support I. Several horizontal stop devices are arranged on the same side of the saw blades; these stop devices are fixed to the frame via brackets. Two reverse horizontal thrust devices are arranged on the same side of the saw blades, located at the outer ends of the two saw blades; the reverse horizontal thrust devices are arranged opposite to the horizontal thrust pressing devices; these reverse horizontal thrust devices are fixed to the frame via support II.

[0005] This invention comprises a vertical pressing mechanism, a horizontal thrust pressing device, a horizontal stop device, and a reverse horizontal thrust device. The vertical pressing mechanism is equipped with a vertical pressing cylinder, a vertical guide rod, and a pressure plate. Under the guidance of the vertical guide rod, the pressure plate remains horizontal during lifting and lowering, allowing it to fit well with the steel profile. The horizontal stop device is equipped with a square-headed drive screw, a locking nut, a horizontal guide rod, and a stop. When the stop position is properly adjusted, the locking nut can be used to lock the square-headed drive screw, thereby locking the stop position and subsequently locking the roller position.

[0006] This invention stabilizes the stress between the steel section and the saw blade by adjusting the thrust of the horizontal thrust pressing device and the reverse horizontal thrust device, keeping the kerf open. This proactively prevents and avoids saw blade clamping, preventing axial load imbalance caused by clamping on one or both sides of the saw blade. The axial force distribution is more uniform, reducing the vibration amplitude of the saw blade during high-speed rotation. It also reduces the increased heat generated by saw blade clamping, as well as cracking and damage, thus reducing saw blade wear, extending service life, and decreasing the frequency of saw blade replacement. A roller is installed on the upper part of the stop block, contacting the steel section for easy guidance and to prevent friction and wear.

[0007] This invention is more suitable for cold sawing of multiple profiles arranged in a row.

[0008] The working process of this invention is as follows: 1. Adjust the square-headed drive screw in the multiple horizontal stop device so that the line connecting the multiple stops is parallel to the center line of the roller conveyor and perpendicular to the sawing direction of the cold saw and the saw blade.

[0009] 2. Tighten the square-head drive screw with a lock nut to prevent changes in the position of the stop block and roller.

[0010] 3. The steel sections to be sawed are conveyed onto the sawing roller conveyor, and the length-fixing baffle or cutting head baffle is in place to position the steel sections to be sawed on the roller conveyor according to their length.

[0011] 4. The horizontal thrust pressing device pushes the steel section located on the sawing roller table toward multiple horizontal stop devices and applies a certain horizontal pressure.

[0012] 5. The vertical pressing cylinder of the vertical pressing mechanism extends, and the pressing plate moves axially along the vertical guide rods on both sides. The pressing plate presses down on the steel section to be cut from top to bottom, preventing the steel section from moving on the conveyor roller. The vertical guide rods on both sides of the vertical pressing mechanism maintain the balance and stability of the pressing plate and the balance and stability of the vertical pressing force on the steel section.

[0013] 6. The reverse horizontal thrust cylinder of the reverse horizontal thrust device arranged on the same side of the cold saw blade extends and applies a reverse torque to the steel section on the roller table. It interacts with the horizontal thrust pressing device to clamp multiple steel sections, so that the steel section generates tensile stress at the saw kerf position during the sawing process to maintain the saw kerf opening tendency and actively prevent and avoid saw blade clamping.

[0014] 7. Start the cold saw and saw blade, and press... Figure 1 The sawing begins as the sawing direction is indicated. At this time, the horizontal thrust pressing device and the reverse horizontal thrust device interact to actively prevent the saw blade from getting stuck.

[0015] 8. When the saw blade is still stuck, the hydraulic transmission or pneumatic pressure of the reverse horizontal thrust device should be adjusted and increased to ensure sufficient torque to cause the steel to be sawed to deform and tensile stress, so as to maintain the tendency of the steel kerf to open and actively prevent and avoid the saw blade from getting stuck.

[0016] The present invention has the following effects: 1. It prevents and avoids the saw blade getting stuck during the steel sawing process, as well as the increased sawing resistance caused by friction on the side of the saw blade.

[0017] 2. It prevents and avoids the axial load imbalance of the cold saw blade caused by the side pressing against the saw blade, which increases vibration and leads to spindle deformation.

[0018] 3. It prevents and avoids the saw blade from overheating and rapidly rising in temperature, as well as the easy occurrence of thermal fatigue cracks and early damage to the saw blade, thereby increasing the number of times the saw blade can be used on the machine and extending its service life, and reducing saw blade consumption.

[0019] 4. Prevent and avoid situations where the saw blade is clamped in the cold saw machine, causing overcurrent and overload, or even overheating or overload tripping of the saw blade drive motor, which seriously affects the normal production of the cold saw machine.

[0020] 5. The saw blade can be used more frequently on the machine, reducing the number of times the saw blade needs to be replaced during a shift and the downtime, thus increasing the effective working time.

[0021] This invention has a simple structure, is easy to adjust, is reliable in use, and can actively prevent saw blade jamming. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Top view diagram; Figure 3 This is a schematic diagram of the vertical pressing mechanism of the present invention; Figure 4 This is a schematic diagram of the horizontal thrust pressing device and the horizontal stop device of the present invention. Figure 5 This is a schematic diagram of the horizontal stop device of the present invention; Figure 6 This is the reverse horizontal thrust device of the present invention.

[0023] In the diagram: 1-Vertical pressing mechanism, 101-Vertical pressing cylinder, 102-Vertical guide rod, 103-Pressure plate, 104-C-shaped frame, 2-Horizontal thrust pressing device, 201-Horizontal thrust pressing cylinder, 202-Support I, 3-Horizontal stop device, 301-Square head transmission screw, 302-Locking nut, 303-Horizontal guide rod, 304-Stop, 305-Bracket, 306-Roller, 4-Reverse horizontal thrust device, 401-Reverse horizontal thrust cylinder, 402-Support II, 5-Saw blade, 6-Frame, 7-Roller conveyor, 8-Structure steel, 9-Workshop floor. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings, but this is not intended to limit the present invention in any way. Any modifications made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0025] like Figures 1-6As shown, the present invention includes a vertical pressing mechanism 1, a horizontal thrust pressing device 2, a horizontal stop device 3, and a reverse horizontal thrust device 4. There are two vertical pressing mechanisms 1, which are positioned above the roller conveyor 7. The two vertical pressing mechanisms 1 are longitudinally located between two saw blades 5. The two vertical pressing mechanisms 1 are respectively close to the working positions of the two saw blades 5. The vertical pressing mechanisms 1 are fixed to the workshop floor 9 by anchor bolts. The horizontal thrust pressing device 2 is located on the opposite side of the saw blades 5. There are 3 horizontal thrust devices 2 in total, located longitudinally between the two saw blades 5; the horizontal thrust pressing device 2 is fixedly connected to the frame 6 via support I; several horizontal stop devices 3 are arranged on the same side of the saw blades 5; the horizontal stop devices 3 are fixedly connected to the frame 6 via brackets; there are 2 reverse horizontal thrust devices 4, arranged on the same side of the saw blades 5, and located at the outer ends of the two saw blades 5 respectively; the reverse horizontal thrust devices 4 are arranged opposite to the horizontal thrust pressing device 2; the reverse horizontal thrust devices 4 are fixedly connected to the frame 6 via support II.

[0026] The line connecting the blocks of the plurality of horizontal stop devices 3 is parallel to the longitudinal center line of the roller conveyor 7 and perpendicular to the sawing direction of the saw blade 5.

[0027] The thrust and stroke of the reverse horizontal thrust device 4 are less than the thrust and stroke of the horizontal thrust pressing device 2.

[0028] The vertical pressing mechanism 1 includes a vertical pressing cylinder 101, a vertical guide rod 102, a pressure plate 103, and a C-shaped frame 104. The vertical pressing cylinder 101 is installed on the upper crossbeam of the C-shaped frame 104 at the center position corresponding to the roller conveyor 7. One vertical guide rod 102 is symmetrically arranged on the upper crossbeam of the C-shaped frame 104 with the vertical pressing cylinder 101 as the center. The pressure plate 103 is located above the section steel 8. The upper end face of the pressure plate 103 is fixedly connected to the lower end of the vertical pressing cylinder 101 and the vertical guide rod 102, respectively.

[0029] The vertical pressing cylinder 101 is hydraulically driven or pneumatically driven.

[0030] The horizontal thrust pressing device 2 includes a horizontal thrust pressing cylinder 201 and a support I 202; the horizontal thrust pressing cylinder 201 is fixedly connected to the support I 202; the support I 202 is welded or bolted to the frame 6; the horizontal thrust pressing device 2 is located on the opposite side of the reverse horizontal thrust device 4.

[0031] The horizontal thrust cylinder 201 is hydraulically or pneumatically driven.

[0032] The horizontal stop device 3 includes a square-headed drive screw 301, a locking nut 302, a horizontal guide rod 303, a stop 304, a bracket 305, and a roller 306. The square-headed drive screw 301 is positioned at the center of the upper part of the bracket 305. The locking nut 302 is provided at the square end of the square-headed drive screw 301. One horizontal guide rod 303 is symmetrically arranged on the left and right sides of the upper part of the bracket 305, with the square-headed drive screw 301 as the center. The stop 304 is disposed on the square-headed drive screw 301 and the horizontal guide rod 303. The roller 306 is disposed on the upper part of the stop 304. The bracket 305 is welded or bolted to the frame 6.

[0033] The reverse horizontal thrust device 4 includes a reverse horizontal thrust cylinder 401 and a support II 402; the reverse horizontal thrust cylinder 401 is fixedly connected to the support II 402; the support II 402 is welded or bolted to the frame 6; the reverse horizontal thrust device 4 is located on the side opposite to the horizontal thrust pressing device 2.

[0034] The aforementioned reverse horizontal thrust cylinder 401 is hydraulically driven or pneumatically driven.

[0035] Working principle and process of this invention: This invention stabilizes the stress between the steel section 8 and the saw blade 5 by adjusting the thrust of the horizontal thrust pressing device 2 and the reverse horizontal thrust device 4, keeping the saw kerf open. This actively prevents and avoids saw blade clamping, preventing axial load imbalance of the saw blade 5 caused by clamping it on one or both sides. The axial force distribution is more uniform, reducing the vibration amplitude of the saw blade 5 during high-speed rotation. It also reduces the increased heat generated by clamping the saw blade 5, as well as cracking and damage, thus reducing saw blade wear, extending its service life, and decreasing the frequency of saw blade replacement. A roller 306 is installed on the upper part of the stop block 304, contacting the steel section 8 to facilitate the conveying and guiding of the steel section 8 and prevent friction and wear.

[0036] The working process of this invention is as follows: 1. Adjust the square-headed drive screw 301 in the multiple horizontal stop device 3 so that the line connecting the multiple stops 304 is parallel to the center line of the roller conveyor 7 and perpendicular to the sawing direction of the cold saw and the saw blade 5.

[0037] 2. Tighten the square-head drive screw 301 with the lock nut 302 to prevent the position of the stop block 304 and roller 306 from changing.

[0038] 3. The steel section 8 to be sawed is conveyed onto the sawing roller conveyor 7, and the length-fixing baffle or cutting head baffle is in place to position the steel section 8 to be sawed on the roller conveyor 7.

[0039] 4. The horizontal thrust pressing device 2 pushes the steel section 8 located on the sawing roller table 7 towards the multiple horizontal stop devices 3 and applies a certain horizontal pressure.

[0040] 5. The vertical pressing cylinder 101 of the vertical pressing mechanism 1 extends, and the pressing plate 103 moves axially along the vertical guide rods 102 on both sides. The pressing plate 103 presses down on the section steel 8 to be cut, preventing the section steel 8 from moving on the conveyor roller 7. The vertical guide rods 102 on both sides of the vertical pressing mechanism 1 maintain the balance and stability of the pressing plate 103 and the balance and stability of the vertical pressing force on the section steel 8.

[0041] 6. The reverse horizontal thrust cylinder 401 of the reverse horizontal thrust device 4 arranged on the same side of the cold saw blade 5 extends and applies a reverse torque to the section steel 8 on the roller table 7. It interacts with the horizontal thrust pressing device 2 to clamp multiple sections of steel 8, so that the section steel 8 generates tensile stress at the saw kerf position during the sawing process to maintain the saw kerf opening trend and actively prevent and avoid the saw blade 5 from being clamped.

[0042] 7. Start the cold saw and saw blade 5, press Figure 1 The sawing begins as the sawing direction is indicated. At this time, the horizontal thrust pressing device 2 and the reverse horizontal thrust device 4 interact to actively prevent the saw blade 5 from getting stuck.

[0043] 8. When the saw blade 5 is still being clamped, the hydraulic transmission or pneumatic pressure of the reverse horizontal thrust device 4 should be adjusted and increased to ensure sufficient torque to cause the steel section 8 to be sawed to deform and tensile stress, so as to maintain the tendency of the saw kerf of the steel section 8 to open, and to actively prevent and avoid the saw blade 5 from being clamped.

Claims

1. A method for using an active anti-saw blade clamping device for a cold saw machine, comprising a vertical pressing mechanism (1), a horizontal thrust pressing device (2), a horizontal stop device (3), and a reverse horizontal thrust device (4), characterized in that: There are two vertical pressing mechanisms (1), which are set above the roller conveyor (7); the two vertical pressing mechanisms (1) are located longitudinally between the two saw blades (5); the two vertical pressing mechanisms (1) are respectively close to the working positions of the two saw blades (5); the vertical pressing mechanism (1) includes a vertical pressing cylinder (101), a vertical guide rod (102), a pressure plate (103), and a C-shaped frame (104); the horizontal stop device (3) includes a square-headed transmission screw (301) and a locking nut. (302), horizontal guide rod (303), stop block (304), bracket (305), roller (306); the reverse horizontal thrust device (4) includes a reverse horizontal thrust cylinder (401) and support II (402), the reverse horizontal thrust cylinder (401) adopts hydraulic transmission or pneumatic; the vertical pressing mechanism (1) is fixed to the workshop floor (9) by anchor bolts; the horizontal thrust pressing device (2) is set on the opposite side of the saw blade (5); the horizontal thrust pressing device (2) There are 3 horizontal thrust devices (2) in total, located longitudinally between the two saw blades (5); the horizontal thrust pressing device (2) is fixedly connected to the frame (6) via support I; several horizontal stop devices (3) are arranged on the same side of the saw blades (5); the horizontal stop devices (3) are fixedly connected to the frame (6) via brackets; there are 2 reverse horizontal thrust devices (4) in total, arranged on the same side of the saw blades (5), and located at the outer ends of the two saw blades (5); the reverse horizontal thrust devices (4) are connected to the horizontal thrust pressing device (6) in total. The devices (2) are arranged relative to each other; the reverse horizontal thrust device (4) is fixed to the frame (6) through support II; the thrust and stroke of the reverse horizontal thrust device (4) are less than the thrust and stroke of the horizontal thrust pressing device (2); when in use, by adjusting the thrust of the horizontal thrust pressing device (2) and the reverse horizontal thrust device (4), the stress between the steel section and the saw blade (5) is kept stable, and the saw kerf is kept open, so as to actively prevent and avoid saw blade clamping; the usage method includes the following steps: S1. Adjust the square-headed transmission screw (301) in the multiple horizontal stop device (3) so that the line connecting the multiple stops (304) is parallel to the center line of the roller conveyor (7) and perpendicular to the sawing direction of the cold saw and the saw blade (5). S2. Lock the square-head drive screw (301) with a lock nut (302) to prevent the position of the stop (304) and roller (306) from changing. S3. The steel section to be sawed is transported to the sawing roller (7), and the length-fixed baffle or cutting head baffle is in place so that the steel section to be sawed is positioned on the roller (7) according to its length. S4, the horizontal thrust pressing device (2) pushes the steel section located on the sawing roller table (7) towards the multiple horizontal stop devices (3) and applies a certain horizontal pressure; S5. The vertical pressing cylinder (101) of the vertical pressing mechanism (1) extends out, and the pressing plate (103) moves axially along the vertical guide rods (102) on both sides. The pressing plate (103) presses down on the steel section to be cut from top to bottom to prevent the steel section from moving on the conveyor roller (7). The vertical guide rods (102) on both sides of the vertical pressing mechanism (1) maintain the balance and stability of the pressing plate (103) and the balance and stability of the vertical pressing force on the steel section. S6. The reverse horizontal thrust cylinder (401) of the reverse horizontal thrust device (4) arranged on the same side as the cold saw blade (5) extends out and applies a reverse torque to the steel section on the roller table (7). It interacts with the horizontal thrust pressing device (2) to clamp multiple steel sections, so that the steel section generates tensile stress at the saw kerf position during the sawing process to maintain the saw kerf opening trend and actively prevent and avoid the occurrence of saw blade (5) clamping. S7. Start the cold saw and saw blade (5), and move in the sawing direction to start sawing; at this time, the horizontal thrust pressing device (2) and the reverse horizontal thrust device (4) interact to actively prevent the saw blade from getting stuck. S8. When the saw blade (5) is still clamped, the hydraulic transmission or pneumatic pressure of the reverse horizontal thrust device (4) should be adjusted and increased to ensure that there is enough torque to cause the steel to be cut to deform and tensile stress, so as to maintain the tendency of the steel kerf to open, and to actively prevent and avoid the saw blade from being clamped.

2. The method of use according to claim 1, characterized in that: The line connecting the blocks of the several horizontal stop devices (3) is parallel to the longitudinal center line of the roller conveyor (7) and perpendicular to the sawing direction of the saw blade (5).

3. The method of use according to claim 1, characterized in that: A vertical pressing cylinder (101) is installed on the upper crossbeam of the C-shaped frame (104) at the center position of the roller conveyor (7); one vertical guide rod (102) is symmetrically arranged on the upper crossbeam of the C-shaped frame (104) with the vertical pressing cylinder (101) as the center; the pressure plate (103) is located above the section steel (8); the upper end face of the pressure plate (103) is fixedly connected to the lower end of the vertical pressing cylinder (101) and the vertical guide rod (102) respectively.

4. The method of use according to claim 3, characterized in that: The vertical pressing cylinder (101) is hydraulically driven or pneumatically driven.

5. The method of use according to claim 1, characterized in that: The horizontal thrust pressing device (2) includes a horizontal thrust pressing cylinder (201) and a support I (202); the horizontal thrust pressing cylinder (201) is fixedly connected to the support I (202); the support I (202) is welded or bolted to the frame (6).

6. The method of use according to claim 5, characterized in that: The horizontal thrust cylinder (201) is hydraulically or pneumatically driven.

7. The method of use according to claim 1, characterized in that: A square-headed drive screw (301) is provided at the upper center of the bracket (305); a locking nut (302) is provided at the square end of the square-headed drive screw (301); one horizontal guide rod (303) is symmetrically arranged on the left and right sides of the upper part of the bracket (305) with the square-headed drive screw (301) as the center; a stop block (304) is provided on the square-headed drive screw (301) and the horizontal guide rod (303); a roller (306) is provided on the upper part of the stop block (304); the bracket (305) is welded or bolted to the frame (6).

8. The method of use according to claim 1, characterized in that: The reverse horizontal thrust cylinder (401) is fixedly connected to the support II (402); the support II (402) is welded or bolted to the frame (6).

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