A dust collector steel structure frame cutting control device and method

Abstract

The present application relates to cutting processing technical field, specifically to a kind of dust collector steel structure frame cutting control equipment and method, dust collector steel structure frame cutting control equipment, including rack, power device, guide mechanism and saw blade;Saw blade rotation is set in power device;Guide mechanism includes support arm, back pressure unit and at least two guide bearings, support arm is used to guide saw blade to fold to vertical state;At least two guide bearings are rotationally installed on support arm around vertical axis, and respectively located at the two sides of the lower side of saw blade, for guiding saw blade to pass through;By setting back pressure unit and saw blade abutment, back pressure belt and saw blade are surface contact, compared with the mode that bearing or roller is contacted with saw blade in prior art, contact area is larger, and wear probability is lower;And the back pressure belt that is obliquely arranged is continuously replaced with the contact position of saw blade when rotating under the frictional contact with saw blade, further reduce the wear of back pressure belt.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting processing, in particular to a dust collector steel structure frame cutting control equipment and method. BACKGROUND

[0002] As the core equipment of the industrial environmental protection system, the steel structure frame of the dust collector is usually welded or spliced by various types of steel (such as H-shaped steel, I-beam, square tube, etc.). In the manufacturing process, high-precision and high-efficiency cutting of these steel sections is the primary and key process. As a kind of efficient and energy-saving cold cutting equipment, the band sawing machine has become one of the mainstream equipment for steel structure frame cutting due to its narrow cutting, high precision, and less material loss.

[0003] When the traditional band sawing machine cuts such workpieces, the core cutting component, the ring-shaped saw blade, is usually driven and tensioned by two horizontally or approximately horizontally arranged transmission wheels to form a huge ring-shaped cutting belt. The lower straight section of the saw blade is the effective working section, which needs to pass through the workpiece when performing the cutting task. In order to ensure the perpendicularity and straightness of the cutting surface and prevent the saw blade from deflecting or twisting under the action of the cutting force, a guide structure must be provided near the working section of the saw blade. The common guide mechanism in the prior art usually adopts a pair of fixedly installed hard alloy blocks or bearings, which are tightly attached to the two sides of the working section of the saw blade to clamp and guide it.

[0004] However, this conventional guide method has exposed several inherent defects and bottleneck problems in long-term and heavy-load steel structure cutting operations: first, the working section of the saw blade often needs to be forcibly folded by mechanical means from a horizontal transmission state to a vertical cutting state. This plastic deformation causes the saw blade to store elastic stress that attempts to restore its original state. During cutting, this torque causes the saw blade to continuously and with great pressure against a fixed side surface of the guide bearing or guide block. This concentrated and one-way continuous pressure causes the unilateral wear of the guide element to accelerate sharply, not only shortening the service life of the bearing and increasing maintenance costs and downtime due to frequent replacement, but also causing the guide accuracy of the saw blade to decrease as the guide gap increases due to wear, directly affecting the quality of the cut surface of the workpiece and possibly producing an inclined surface or cutting vibration marks. Second, in order to provide sufficient downward cutting pressure and suppress the jumping of the saw blade under the cutting load, a back pressure device is usually provided above the saw blade. The prior art often uses fixed-axis rollers or bearings to directly press against the back of the saw blade. This method has two shortcomings: first, point contact or line contact causes contact stress concentration, which can easily form periodic indentations at specific positions on the back of the saw blade teeth, and long-term operation can induce fatigue cracks in the saw blade. These problems all affect the service life of the guide structure and the cutting efficiency. SUMMARY

[0005] The application provides a dust collector steel structure frame cutting control device and method to solve the above technical problems.

[0006] The dust collector steel structure frame cutting control device and method of the application adopts the following technical scheme:

[0007] A dust collector steel structure frame cutting control device comprises a rack, a power device, a guide mechanism and a saw blade; the power device can move up and down relative to the rack and comprises two transmission wheels arranged in rotation; the two transmission wheels are parallel and are both arranged in an inclined manner; the saw blade is wound around the two transmission wheels and rotates synchronously with the transmission wheels; the guide mechanism is arranged at least in two, and is distributed along the lower side of the saw blade in sequence; the guide mechanism comprises a support arm, a back pressure unit and at least two guide bearings; the support arm can move up and down relative to the rack and is used for guiding the saw blade to be folded to a vertical state; the at least two guide bearings are both rotatably installed on the support arm about a vertical axis and are respectively located on both sides of the lower side of the saw blade, and are used for guiding the saw blade to pass through; the back pressure unit is located above the lower side of the saw blade and comprises a mounting frame, at least two back pressure wheels rotatably installed on the mounting frame and a back pressure belt sleeved outside the back pressure wheels; the mounting frame is installed on the support arm; a support block for supporting the back pressure belt is arranged between the adjacent two back pressure wheels, so that the back pressure belt can abut against the saw blade; the distribution direction of the at least two back pressure wheels is arranged in an inclined manner relative to the extension direction of the lower side of the saw blade; and the mounting frame can rotate relative to the support arm, so that the relative angle between the distribution direction of the at least two back pressure wheels and the saw blade is adjustable.

[0008] Optionally, the support arm comprises a fixing frame, a guide rod and a guide head; the fixing frame can move up and down relative to the rack; the guide rod is vertical and located in the fixing frame; the guide head is in sliding fit with the fixing frame and is located on the lower side of the fixing frame; and the guide head is connected with the fixing frame through an elastic element; the mounting frame is rotatably installed on the guide head and moves up and down synchronously with the guide head; and the mounting frame is in screw fit with the guide rod, so that the mounting frame rotates when the fixing frame and the guide head approach each other, and the rotation amplitude of the mounting frame is positively correlated with the relative movement distance of the fixing frame and the guide head.

[0009] Optionally, the guide mechanism further comprises a pair of steel wire brushes; the pair of steel wire brushes are both installed on the support arm and are respectively located on both sides of the saw blade; the pair of steel wire brushes are in frictional contact with the saw blade and rotate in opposite directions to clean the saw blade; and the steel wire brushes have a downward force on the saw blade when the steel wire brushes rotate.

[0010] Optionally, a pair of pressure rods are arranged on the fixing frame; an installation block is installed on the guide head; and each steel wire brush is hinged to the installation block through a swing arm; when the fixing frame and the guide head approach each other, the pair of pressure rods push the swing arms of the pair of steel wire brushes to approach each other, so as to increase the friction force between the steel wire brushes and the saw blade.

[0011] Optionally, the two sides of the support block close to the back pressure wheels are arc surfaces, and the arc surfaces are in smooth contact with the back pressure wheels.

[0012] Optionally, a channel is formed in the guide head for the saw blade to pass through; the guide mechanism further comprises a fixing block and a top block, the fixing block and the guide head are respectively located at two side walls of the channel, and the fixing block is fixed with the guide head, the top block can be close to or away from the fixing block to adjust the distance between the guide and the fixing block, thereby adapting to saw blades of different thicknesses.

[0013] Optionally, the guide bearings are arranged in pairs, and the two guide bearings in each pair are located on the two sides of the saw blade and have different heights to provide a torque for the saw blade to twist to the vertical direction.

[0014] Optionally, the guide mechanisms are arranged in pairs, and the cutting section of the saw blade for cutting the workpiece is defined between the two guide mechanisms in each pair, and the steel wire brush is located on the side of the support arm close to the cutting section.

[0015] Optionally, a cross beam is arranged on the rack, the cross beam can move up and down relative to the rack, and the fixing frame of the support arm of at least two guide mechanisms is mounted on the cross beam.

[0016] A dust collector steel structure frame cutting control method, using the dust collector steel structure frame cutting control device, comprising the following steps:

[0017] S10, the lower side of the saw blade passes between the at least two guide bearings of the guide mechanism, and the guide bearings make the section of the saw blade between the at least two guide mechanisms vertical;

[0018] S20, adjust the relative position of the guide mechanism and the saw blade, so that the back pressure belt of the back pressure unit can abut against the saw blade, and the side edge of the back pressure belt extends in a direction inclined relative to the saw blade;

[0019] S30, start the transmission wheel to rotate, drive the saw blade to rotate, and at the same time, the power device and the guide mechanism are synchronously moved downward to feed the workpiece.

[0020] The dust collector steel structure frame cutting control device of the application abuts against the saw blade through the back pressure unit, and the back pressure belt and the saw blade are in surface contact, which has a larger contact area and a lower wear probability compared with the contact mode of the prior art using bearings or rollers and the saw blade; the inclined back pressure belt continuously changes the contact position with the saw blade when rotating under the frictional contact with the saw blade, further reducing the wear of the back pressure belt, and at the same time, the eccentric torque provided by the inclined back pressure belt and the back pressure wheel when rotating can offset a part of the top pressure of the saw blade on the guide bearing, prolonging the service life of the whole guide mechanism.

[0021] Further, the mounting frame is screw-coupled with the guide rod, rotates when the fixing frame and the guide head are close to each other, and the rotation range is positively correlated with the relative moving distance of the fixing frame and the guide head, so that when the guide mechanism is close to the saw blade or the saw blade cuts the workpiece and is subjected to the reaction force of the workpiece, the mounting frame rotates under the screw-coupling with the guide rod, so that the inclination angle of the back pressure belt and the back pressure wheel relative to the saw blade is further increased, and the contact area of the back pressure belt and the saw blade is further increased, and the wear degree of the back pressure belt is reduced.

[0022] Further, the pair of steel wire brushes rotate reversely synchronously, and the side close to the saw blade rotates downward, so that the debris on the saw blade is removed, and the downward trend of the saw blade is reduced, and the upward pressure of the saw blade on the back pressure unit is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor under the premise of the drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the dust collector steel structure frame cutting control device of the present application.

[0025] Figure 2 It is a schematic diagram of the installation of the plurality of guide mechanisms in the embodiment of the dust collector steel structure frame cutting control device of the present application.

[0026] Figure 3 It is a schematic diagram of the structure of the guide mechanism in the embodiment of the dust collector steel structure frame cutting control device of the present application.

[0027] Figure 4 It is a schematic diagram of the disassembly of the guide mechanism in the embodiment of the dust collector steel structure frame cutting control device of the present application.

[0028] Figure 5 It is a front view of the guide mechanism in the embodiment of the dust collector steel structure frame cutting control device of the present application.

[0029] Figure 6 It is a side view of the guide mechanism in the embodiment of the dust collector steel structure frame cutting control device of the present application.

[0030] Figure 7 It is Figure 6 It is an enlarged schematic diagram of the position C.

[0031] Figure 8Another direction side view of the guide mechanism in the embodiment of the dust remover steel structure frame cutting control device of the present application;

[0032] Figure 9 For Figure 8 The cross-sectional view of A-A direction in the figure;

[0033] Figure 10 For Figure 8 The cross-sectional view of B-B direction in the figure.

[0034] In the figure: 100, rack; 110, crossbeam; 200, power device; 210, transmission wheel; 220, lifting frame; 300, guide mechanism; 310, support arm; 311, fixed frame; 312, guide rod; 313, guide head; 314, elastic piece; 315, pressing rod; 316, mounting block; 320, back pressure unit; 321, mounting frame; 322, back pressure wheel; 323, back pressure belt; 324, support block; 330, guide bearing; 340, steel wire brush; 341, swing arm; 400, saw blade. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0036] An embodiment of the dust remover steel structure frame cutting control device of the present application, as shown in the figure, comprises a rack 100, a power device 200, a guide mechanism 300 and a saw blade 400. Figures 1 to 10

[0037] The power device 200 can move up and down relative to the rack 100, and comprises two transmission wheels 210 arranged in rotation, the two transmission wheels 210 are parallel and both are arranged in inclination, the saw blade 400 is wound on the two transmission wheels 210 and rotates synchronously with the transmission wheels 210. Specifically, the power device 200 further comprises a lifting frame 220, the lifting frame 220 is slidingly installed on the rack 100 and is connected with the rack 100 through a hydraulic mechanism (not shown in the figure), the two transmission wheels 210 are both rotationally installed on the lifting frame 220, the hydraulic mechanism drives the lifting frame 220 to move up and down, thereby driving the transmission wheels 210 and the saw blade 400 to move up and down synchronously.

[0038] ​The guiding mechanism 300 is provided at least two, and is distributed along the lower side of the saw blade 400 in sequence; the guiding mechanism 300 comprises a supporting arm 310, a back pressure unit 320 and at least two guiding bearings 330, the supporting arm 310 is capable of moving up and down relative to the rack 100, and is used for guiding the saw blade 400 to be folded to the vertical state; the at least two guiding bearings 330 are rotatably installed on the supporting arm 310 around the vertical axis, and are respectively located on both sides of the lower side of the saw blade 400, and are used for guiding the saw blade 400 to pass through; the back pressure unit 320 is located above the lower side of the saw blade 400, and comprises a mounting frame 321, at least two back pressure wheels 322 rotatably installed on the mounting frame 321 and a back pressure belt 323 sleeved outside the back pressure wheels 322, and the mounting frame 321 is installed on the supporting arm 310; the at least two back pressure wheels 322 are arranged in parallel and are spaced apart, and a supporting block 324 for supporting the back pressure belt 323 is arranged between adjacent two back pressure wheels 322, so that the back pressure belt 323 can abut against the saw blade 400; the distribution direction of the at least two back pressure wheels 322 is obliquely arranged relative to the extension direction of the lower side of the saw blade 400, and the mounting frame 321 is capable of rotating relative to the supporting arm 310, so that the relative angle between the distribution direction of the at least two back pressure wheels 322 and the saw blade 400 is adjustable. The material of the back pressure belt 323 can be selected from a wear-resistant metal material.

[0039] In use, the lower side of the saw blade 400 is sequentially passed through the support arms 310 of the at least two guide mechanisms 300, which fold the lower side of the saw blade 400 to a vertical state for cutting workpieces. The at least two guide bearings 330 are respectively located on both sides of the lower side of the saw blade 400, which provide a guide function for the saw blade 400 when the saw blade 400 rotates with the transmission wheel 210, and because the lower side of the saw blade 400 is folded and deformed to a vertical state, it will have a first deflection torque about the axis of extension of the lower side of the saw blade 400, which is the torque for the saw blade 400 to recover from deformation to its original state. The back pressure wheels 322 are located on the upper side of the lower side of the saw blade 400, which provide a downward pressing force for the saw blade 400 when cutting workpieces, and the saw blade 400 drives the back pressure belt 323 to rotate around the back pressure wheels 322 when rotating, and because the distribution direction of the at least two back pressure wheels 322 is obliquely arranged with the extension direction of the lower side of the saw blade 400, the back pressure belt 323 will constantly change the contact position with the saw blade 400 when rotating, which is different from the prior art in which the back pressure wheels 322 and the saw blade 400 are in constant position contact, and is not prone to produce pressure marks at a specific position. Further, the obliquely arranged back pressure wheels 322 and back pressure belt 323 will provide a second deflection torque to the saw blade 400 when driven to rotate by the saw blade 400, which makes the lower side of the saw blade 400 have a tendency to deflect about its axis of extension, and by matching the oblique direction of the back pressure wheels 322 and the back pressure belt 323 with the deformation direction of the saw blade 400, the second deflection torque can offset a part of the first deflection, thereby reducing the pressing force of the saw blade 400 on the guide bearings 330, and further reducing the wear of the guide bearings 330.

[0040] By arranging the back pressure unit 320 to abut against the saw blade 400, the back pressure belt 323 and the saw blade 400 are in surface contact, which is larger in contact area and lower in wear probability than the prior art in which bearings or rollers are used to contact the saw blade 400; and the obliquely arranged back pressure belt 323 will constantly change the contact position with the saw blade 400 when rotating in frictional contact with the saw blade 400, which further reduces the wear of the back pressure belt 323, and at the same time, the eccentric torque provided by the obliquely arranged back pressure belt 323 and back pressure wheels 322 when rotating for the saw blade 400 can offset a part of the pressing force of the saw blade 400 on the guide bearings 330, thereby prolonging the service life of the entire guide mechanism 300.

[0041] In the embodiment, the support arm 310 comprises a fixing frame 311, a guide rod 312 and a guide head 313, the fixing frame 311 is capable of moving up and down relative to the rack 100, the guide rod 312 is vertical and located in the fixing frame 311. The guide head 313 is slidingly fitted on the fixing frame 311 and located on the lower side of the fixing frame 311, and is connected with the fixing frame 311 through an elastic member 314; wherein the elastic member 314 is a spring and is sleeved on the guide rod 312. The mounting frame 321 is rotationally installed on the guide head 313 and synchronously moves up and down with the guide head 313, and the mounting frame 321 is screwedly fitted with the guide rod 312, so as to rotate when the fixing frame 311 and the guide head 313 are close to each other, and the rotation amplitude is positively correlated with the relative movement distance of the fixing frame 311 and the guide head 313.

[0042] When the guide mechanism 300 approaches the saw blade 400 and abuts against the saw blade 400 or the saw blade 400 cuts the workpiece and is subjected to the reaction force of the workpiece, the mounting frame 321 installed on the guide head 313 pushes the guide head 313 to move upward relative to the fixing frame 311, and the greater the hardness of the workpiece is, the greater the reaction force acting on the back pressure unit 320 is, and the greater the distance of the guide head 313 moving upward relative to the fixing frame 311 is, and the mounting frame 321 rotates under the screw fitting with the guide rod 312 to further increase the inclination angle of the back pressure belt 323 and the back pressure wheel 322 relative to the saw blade 400, thereby increasing the contact area of the back pressure belt 323 with the saw blade 400 and reducing the wear degree of the back pressure belt 323. When the hardness of the workpiece is small, the reaction force acting on the back pressure unit 320 is small, and the inclination angle of the back pressure wheel 322 and the back pressure belt 323 relative to the saw blade 400 does not need to be large, so that the frictional resistance of the back pressure belt 323 to the rotation of the saw blade 400 can be reduced.

[0043] In the embodiment, the guide mechanism 300 further comprises a pair of steel wire brushes 340, which are both installed on the support arm 310 and located on both sides of the saw blade 400, and are in frictional contact with the saw blade 400 and rotate in opposite directions to clean the saw blade 400, and the steel wire brushes 340 have a downward force on the saw blade 400 when rotating. The pair of steel wire brushes 340 synchronously rotate in opposite directions, and the side close to the saw blade 400 rotates downward, which not only carries away the debris on the saw blade 400, but also makes the saw blade 400 have a downward trend, thereby further reducing the pressure of the saw blade 400 on the back pressure unit 320.

[0044] In the embodiment, the fixed frame 311 is provided with a pair of push rods 315, the guide head 313 is provided with a mounting block 316, and each steel wire brush 340 is hinged to the mounting block 316 through a swing arm 341; when the fixed frame 311 and the guide head 313 are close to each other, the pair of push rods 315 push the swing arms 341 of the pair of steel wire brushes 340 to be close to each other, thereby increasing the friction force between the steel wire brush 340 and the saw blade 400. When the fixed frame 311 and the guide head 313 are further close to each other, it indicates that the workpiece cut by the saw blade 400 is harder, and the reaction force on the back pressure unit 320 is greater. By making the steel wire brush 340 further close to the saw blade 400, the downward force on the saw blade 400 is increased, thereby reducing the reaction force on the back pressure unit 320. The steel wire brush 340 can be driven to rotate by a motor (not shown in the figure) mounted on the swing arm 341.

[0045] In the embodiment, the support block 324 is provided with an arc surface close to the two sides of the back pressure wheel 322, and the arc surface is in smooth contact with the back pressure wheel 322. The support block 324 is connected with the back pressure wheel 322, and the saw blade 400 is effectively supported by the back pressure belt 323.

[0046] In the embodiment, the guide head 313 is provided with a channel for the saw blade 400 to pass through; the guide mechanism 300 further includes a fixed block and a top block. The fixed block and the guide head 313 are located on the two side walls of the channel respectively, and the fixed block is fixed with the guide head 313. The top block can be close to or away from the fixed block to adjust the distance between the guide head 313 and the fixed block, thereby adapting to saw blades 400 of different thicknesses. Specifically, a knob is rotatably mounted on the guide head 313 and threadedly connected with the top block. By rotating the knob, the top block can be brought close to or away from the fixed block.

[0047] In the embodiment, the guide bearings 330 are arranged in pairs, and the two guide bearings 330 in each pair are located on the two sides of the saw blade 400 respectively and have different heights to provide a torque for the saw blade 400 to twist to the vertical direction. Among the two guide bearings 330 arranged in pairs, the guide bearing 330 located on the same side as the fixed block is fixed in position, and the guide bearing 330 located on the same side as the top block is adjustable in position to adapt to saw blades 400 of different thicknesses.

[0048] In the embodiment, the guide mechanisms 300 are arranged in pairs, and the cutting section of the saw blade 400 for cutting workpieces is defined between the two guide mechanisms 300 arranged in pairs. The steel wire brush 340 is located on the side of the support arm 310 close to the cutting section, thereby enabling at least one steel wire brush 340 of the guide mechanism 300 to clean the saw blade 400 regardless of the forward rotation or reverse rotation of the saw blade 400.

[0049] In the embodiment, the cross beam 110 is arranged on the rack 100 and can move up and down relative to the rack 100, and the fixing frame 311 of the support arm 310 of the at least two guide mechanisms 300 is mounted on the cross beam 110. The up and down movement of the cross beam 110 can be driven by another set of hydraulic mechanisms.

[0050] Before use, the saw blade 400 is installed on the guide mechanism 300: the cross beam 110 is moved downward to drive the guide mechanism 300 to move downward, and the lower side of the saw blade 400 is folded to the vertical state, so that the lower side of the saw blade 400 is clamped between the fixed block and the top block, the distance between the top block and the fixed block is adjusted, the rotation of the saw blade 400 is limited, and the pair of guide bearings 330 abut the two sides of the saw blade 400, respectively, and the back pressure belt 323 of the back pressure unit 320 abuts and inclines the saw blade 400, and the pair of steel wire brushes 340 abut the two sides of the saw blade 400.

[0051] When the workpiece is cut, the transmission wheel 210 rotates to drive the saw blade 400 to rotate synchronously, and the power device 200 and the guide mechanism 300 are synchronously moved downward to feed, the lower side of the saw blade 400 cuts the workpiece, and the steel wire brush 340 rotates to clean the debris on the saw blade 400. If the hardness of the workpiece is large, the reaction force on the saw blade 400 is also large when feeding downward, the saw blade 400 acts on the back pressure unit 320, and the distance between the guide head 313 and the fixed frame 311 is large, the elastic member 314 is compressed more, the mounting frame 321 of the back pressure unit 320 is rotated under the screw cooperation with the fixed frame 311 to increase the inclination angle of the back pressure belt 323 and the saw blade 400, and then the contact area of the back pressure belt 323 and the saw blade 400 when rotating is also increased to adapt to the workpiece with large hardness and reduce the wear of the back pressure belt 323.

[0052] A dust collector steel structure frame cutting control method uses the dust collector steel structure frame cutting control device, and includes the following steps:

[0053] S10, the lower side of the saw blade 400 passes between the at least two guide bearings 330 of the guide mechanism 300, and the guide bearings 330 make the section of the saw blade 400 between the at least two guide mechanisms 300 in the vertical state;

[0054] S20, adjust the relative position of the guide mechanism 300 and the saw blade 400, so that the back pressure belt 323 of the back pressure unit 320 can abut the saw blade 400, and the side edge of the back pressure belt 323 is inclined relative to the saw blade 400;

[0055] S30, the driving wheel 210 is started to rotate, driving the saw blade 400 to rotate, and the power device 200 and the guide mechanism 300 are synchronously moved downward to feed the cutting workpiece.

[0056] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cutting control device for a steel structure frame of a dust collector, characterized in that, Includes frame, power unit, guide mechanism and saw blade; The power unit can move up and down relative to the frame and includes two rotating drive wheels. The two drive wheels are parallel and inclined. The saw blade is wrapped around the two drive wheels and rotates synchronously with the drive wheels. At least two guiding mechanisms are provided, distributed sequentially along the lower side of the saw blade. Each guiding mechanism includes a support arm, a back pressure unit, and at least two guide bearings. The support arm can move up and down relative to the frame and guides the saw blade to a vertical position. At least two guide bearings are rotatably mounted on the support arm around a vertical axis and are located on either side of the lower side of the saw blade, guiding the saw blade through. The back pressure unit is located above the lower side of the saw blade and includes a mounting frame, at least two back pressure wheels rotatably mounted on the mounting frame, and a back pressure belt sleeved around the back pressure wheels. The mounting frame is mounted on the support arm, and a support block is provided between adjacent back pressure wheels to support the back pressure belt, ensuring that the back pressure belt maintains contact with the saw blade. The distribution direction of the at least two back pressure wheels is inclined to the extension direction of the lower side of the saw blade, and the mounting frame can rotate relative to the support arm, making the relative angle between the distribution direction of the at least two back pressure wheels and the saw blade adjustable. The support arm includes a fixed frame, a guide rod, and a guide head. The fixed frame can move up and down relative to the frame. The guide rod is vertical and located inside the fixed frame. The guide head slides up and down with the fixed frame and is located on the lower side of the fixed frame. It is connected to the fixed frame by an elastic element. The mounting frame is rotatably mounted on the guide head and moves up and down synchronously with the guide head. The mounting frame is screwed to the guide rod so that it rotates when the fixed frame and the guide head approach each other. The rotation amplitude is positively correlated with the relative movement distance of the fixed frame and the guide head.

2. The dust collector steel structure frame cutting control equipment according to claim 1, characterized in that, The guiding mechanism also includes a pair of wire brushes, which are installed on the support arm and located on both sides of the saw blade. The pair of wire brushes rub against the saw blade and rotate in opposite directions to clean the saw blade. When the wire brushes rotate, they exert a downward force on the saw blade.

3. The dust collector steel structure frame cutting control equipment according to claim 2, characterized in that, The fixed frame is equipped with pairs of pressure bars, and the guide head is equipped with mounting blocks. Each wire brush is hinged to the mounting block through a swing arm. When the fixed frame and the guide head approach each other, the pairs of pressure bars push the swing arms of the paired wire brushes closer to each other, thereby increasing the friction between the wire brush and the saw blade.

4. The dust collector steel structure frame cutting control equipment according to claim 1, characterized in that, The support block has curved surfaces on both sides near the back pressure roller, and the curved surfaces are in smooth contact with the back pressure roller.

5. The dust collector steel structure frame cutting control equipment according to claim 1, characterized in that, The guide head has a channel for the saw blade to pass through; the guide mechanism also includes a fixed block and a top block. The fixed block and the guide head are located on the two side walls of the channel, and the fixed block is fixed to the guide head. The top block can move closer to or further away from the fixed block to adjust its distance from the fixed block, thereby adapting to saw blades of different thicknesses.

6. The dust collector steel structure frame cutting control equipment according to claim 1, characterized in that, The guide bearings are arranged in pairs, with the two guide bearings on opposite sides of the saw blade at different heights, to provide the saw blade with a torque to twist to the vertical direction.

7. The dust collector steel structure frame cutting control equipment according to claim 2, characterized in that, The guide mechanisms are arranged in pairs, and the two guide mechanisms in the pair define a cutting section for the saw blade to cut the workpiece. The wire brush is located on the side of the support arm near the cutting section.

8. The dust collector steel structure frame cutting control equipment according to claim 1, characterized in that, A crossbeam is provided on the frame, and the crossbeam can move up and down relative to the frame. The support arms of at least two guide mechanisms are fixed to the crossbeam.

9. A method for controlling the cutting of a dust collector steel structure frame, utilizing the dust collector steel structure frame cutting control equipment as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S10, the lower side of the saw blade passes between at least two guide bearings of the guide mechanism, and the guide bearings make the section of the saw blade located between the at least two guide mechanisms vertical; S20, Adjust the relative position of the guide mechanism and the saw blade so that the back pressure band of the back pressure unit can keep in contact with the saw blade, and the side extension direction of the back pressure band is set at an angle relative to the saw blade. S30, start the drive wheel to rotate, drive the saw blade to rotate, and at the same time the power unit and guide mechanism move downward to feed the workpiece for cutting.

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