Saw joint holding device for a circular sawing machine

Abstract

The application discloses a kind of saw slit maintaining devices for disc sawing machine, to provide a kind of saw slit maintaining devices for disc sawing machine, which can effectively avoid the problem that the rotation sawing movement of saw disc is affected by the shrinkage of saw slit during the sawing process of steel plate, even cause the problem of saw disc jamming.It includes rack, the processing plane is arranged on the rack, and the processing plane is used to place the steel plate to be sawed;Transverse saw slit maintaining device, the transverse saw slit maintaining device includes transverse insert piece and insert piece reciprocating mechanism for driving transverse insert piece to move, and the transverse insert piece is located at one side of the saw disc of disc sawing machine, and in the process of sawing steel plate by the saw disc of disc sawing machine, insert piece reciprocating mechanism drives transverse insert piece to insert into the saw slit of steel plate.

Description

Technical Field

[0001] This invention relates to a circular saw, and more specifically to a saw kerf retention device for a circular saw. Background Technology

[0002] A circular saw uses a rotating saw disc on a saw frame to perform a sawing motion, while simultaneously feeding along with the saw frame (usually horizontally) to saw steel plates and other materials. While circular sawing technology is relatively mature, it has several drawbacks when sawing large steel plates. Due to the long and narrow kerf, the kerf may contract during the sawing process, affecting the rotational sawing motion of the disc, thus reducing sawing efficiency and potentially causing the disc to jam, disrupting the normal operation of the circular saw. Summary of the Invention

[0003] The purpose of this invention is to provide a saw kerf retention device for a circular saw that can effectively prevent the saw disc from being affected by the shrinkage of the saw kerf during the sawing process of steel plates, and even cause the saw disc to jam.

[0004] The technical solution of this invention is:

[0005] A kerf retention device for a circular saw includes:

[0006] The frame has a processing plane for placing the steel plate to be sawed.

[0007] A transverse kerf holding device includes a transverse insert and a reciprocating mechanism for driving the transverse insert. The transverse insert is located on one side of the saw disc of the circular saw. During the sawing process of the circular saw disc cutting the steel plate, the reciprocating mechanism drives the transverse insert to insert into the kerf of the steel plate. In this way, the width of the kerf can be maintained, effectively preventing the saw disc's rotational sawing motion from being affected by kerf contraction during the steel plate sawing process, and even preventing the saw disc from jamming.

[0008] Preferably, a vertical kerf holding device is also included. This device comprises a vertical insert and a insert lifting mechanism for driving the vertical insert to rise and fall. When the insert lifting mechanism moves the vertical insert to its highest position, the lowest point of the vertical insert is higher than the highest point of the saw disc. During the sawing process of the circular saw, the insert lifting mechanism drives the vertical insert downwards and inserts it into the kerf of the steel plate. In this way, the vertical insert, in conjunction with the horizontal insert, further maintains the kerf width, thereby effectively preventing the kerf from shrinking during steel plate sawing, which could affect the rotational sawing motion of the saw disc or even cause the saw disc to jam.

[0009] Preferably, the device also includes a lifting and anti-misoperation protection device. The frame is equipped with a transverse track and a saw frame that moves along the transverse track. The saw disc is rotatably mounted on the saw frame. The frame has two left and right saw frame limiting blocks, and the saw frame is located between the two left and right saw frame limiting blocks. The vertical kerf holding device also includes a lifting support, and a vertical insert is fixed to the lifting support.

[0010] The lifting anti-misoperation protection device includes a transverse stop bar installed on the saw frame and parallel to the transverse track. The transverse stop bar is located above the saw disc, and its length is greater than the diameter of the saw disc. When the blade lifting mechanism moves the vertical blade to the highest position and the saw frame abuts against the left saw frame limit block, the transverse stop bar is located below the lifting support to prevent the lifting support from moving downward.

[0011] In the actual operation of steel plate sawing, operators may make the following operational errors that could damage the vertical blade: Specifically, during the sawing process of a circular saw, if the horizontal feed position of the saw disc is not yet reached (the saw disc has not yet cut a kerf in the steel plate directly below the vertical blade), and the operator drives the vertical blade downwards, this can lead to either "the vertical blade colliding with the steel plate" or "the vertical blade contacting the saw disc," resulting in damage to the vertical blade. To solve this problem, this solution includes a specially designed lifting anti-misoperation protection device. Specifically, if the operator drives the vertical blade downwards before the horizontal feed position of the saw disc is reached (the saw disc has not yet cut a kerf in the steel plate directly below the vertical blade), the lifting support will abut against the horizontal stop bar. The horizontal stop bar will prevent the lifting support and the vertical blade from moving downwards, thus avoiding either "contact between the vertical blade and the saw disc" or "collision between the vertical blade and the steel plate."

[0012] Preferably, the vertical saw kerf retention device also includes a vertical guide sleeve mounted on the frame and a vertical guide rod that cooperates with the vertical guide sleeve. The lower end of the vertical guide rod is connected to the lifting support. The lifting anti-misoperation protection device also includes a torsion spring, an anti-misoperation stop rod that is rotatably mounted on the frame via a shaft, a limiting block mounted on the frame, and a top rod mounted on the upper end of the vertical guide rod. The limiting block has an upward-facing stop rod groove that cooperates with the anti-misoperation stop rod, and the opening of the stop rod groove faces upward.

[0013] During the process of the blade lifting mechanism driving the vertical blade to descend, the anti-misoperation bar will rotate downward around the shaft under the action of the torsion spring until the end of the anti-misoperation bar enters the stop bar slot and abuts against the bottom surface of the stop bar slot. At this time, the anti-misoperation bar is located on the moving trajectory of the saw frame. When the saw frame moves along the transverse track to the anti-misoperation bar, the saw frame will be blocked by the anti-misoperation bar.

[0014] During the process of the vertical blade rising driven by the blade lifting mechanism, the top rod will abut against the anti-misoperation barrier and push the anti-misoperation barrier to rotate upward around the shaft, so that the saw frame can move along the transverse track without being blocked by the anti-misoperation barrier.

[0015] After the saw blade cuts the steel plate, the saw frame reciprocating mechanism can only drive the saw blade back to its original position after the vertical blade lifting mechanism has driven it to move upwards and reset; otherwise, the saw blade will collide with the vertical blade. In actual operation, the operator may drive the saw blade back to its original position before the vertical blade has moved upwards and reset, causing a collision. To solve this problem, in this embodiment, an anti-misoperation stop bar is installed on the lifting anti-misoperation protection device. Specifically, if the operator drives the saw blade back to its original position before the vertical blade has moved upwards and reset, the anti-misoperation stop bar will rotate downwards around the shaft under the action of the torsion spring and abut against the bottom surface of the stop bar slot. The anti-misoperation stop bar is located on the saw frame's movement trajectory. When the saw frame moves along the transverse track to the anti-misoperation stop bar, the saw frame will be blocked by the anti-misoperation stop bar, thus preventing a collision between the saw blade and the vertical blade.

[0016] Preferably, the insert lifting mechanism is an insert lifting cylinder.

[0017] Preferably, a translational anti-misoperation protection device is also included. The frame is provided with a transverse track and a saw frame that moves along the transverse track. The saw disc is rotatably mounted on the saw frame. The transverse kerf holding device also includes a transverse support. The transverse insert is fixed on the transverse support. The translational anti-misoperation protection device includes a support block fixed on the transverse support and a saw frame block located at the bottom of the saw frame for cooperating with the support block. The saw frame block is located between the support block and the saw disc. When the insert reciprocating movement mechanism drives the transverse insert to move towards the saw disc and causes the support block to abut against the saw frame block, there is a gap between the transverse insert and the saw disc. In the actual operation of steel plate sawing, the operator may make the following operational errors, resulting in damage to the transverse insert. Specifically, during the sawing of steel plates by the circular saw, before the horizontal feed position of the saw disc is reached, the operator drives the transverse insert closer to the saw disc (intending to insert the transverse insert into the kerf), causing the transverse insert to contact the saw disc and be cut and damaged by the saw disc. To address this issue, this solution includes a specially designed anti-misoperation protection device. During the process of the circular saw cutting steel plates, if the horizontal feed position of the saw blade is not yet in place, the operator can drive the transverse blade closer to the saw blade. In this case, the support block will press against the saw frame block. At this time, there is a gap between the transverse blade and the saw blade, thus preventing the transverse blade from contacting the saw blade.

[0018] Preferably, the transverse inserts are arranged vertically.

[0019] Preferably, the vertical inserts are arranged vertically.

[0020] Preferably, the lateral inserts move in a horizontally distributed direction.

[0021] Preferably, the reciprocating movement mechanism of the insert is a transverse cylinder, a transverse hydraulic cylinder, or a transverse electric cylinder.

[0022] The beneficial effect of this invention is that it can effectively avoid the problem of the saw blade's rotational sawing movement being affected by the shrinkage of the saw kerf during the steel plate sawing process, and even cause the saw blade to jam. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a disc saw with a saw kerf retention device for a disc saw applying a specific embodiment of the present invention.

[0024] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0025] Figure 3 This is a three-dimensional structural schematic diagram of a disc saw with a saw kerf retention device for a disc saw applying a specific embodiment of the present invention during actual operation (the steel plate clamping device is not shown in the figure).

[0026] Figure 4 This is a partial structural schematic diagram of a disc saw with a saw kerf retention device for a disc saw applying a specific embodiment of the present invention.

[0027] Figure 5 yes Figure 4 A partial side view.

[0028] In the picture:

[0029] Frame 1, machining plane 1.0;

[0030] 2. Transverse saw kerf holding device; 2.1. Transverse insert; 2.2. Insert reciprocating movement mechanism; 2.3. Transverse support;

[0031] Vertical saw kerf retention device 3, vertical insert 3.1, lifting support 3.2, insert lifting mechanism 3.3, vertical guide rod 3.4;

[0032] Steel plate clamping device 4, clamping block 4.1, clamping block lifting mechanism 4.2;

[0033] Sawing device 5, transverse track 5.1, saw frame 5.2, saw disc 5.3;

[0034] Steel plate 6;

[0035] Translational misoperation prevention device 7, support stop block 7.1, saw frame stop block 7.2;

[0036] Lifting anti-misoperation protection device 8, horizontal stop bar 8.1, anti-misoperation stop bar 8.2, top rod 8.3, shaft rod 8.4, stop bar groove 8.5. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0038] Specific Implementation Example 1: As shown in the example Figure 1 , Figure 2 , Figure 3 As shown, a kerf retention device for a circular saw includes a frame 1 and a transverse kerf retention device 2. The frame is provided with a processing plane 1.0, which is used to place the steel plate 6 to be sawed.

[0039] In this embodiment, the frame is also equipped with a sawing device 5 and a steel plate clamping device 4. The sawing device 5 includes a transverse track 5.1 mounted on the frame, a saw frame 5.2 that moves along the transverse track, a saw frame reciprocating mechanism for driving the saw frame, a saw disc 5.3 rotatably mounted on the saw frame, and a saw disc rotation drive mechanism for driving the saw disc to rotate. The transverse track is horizontally distributed. The saw disc rotation drive mechanism includes a saw disc drive motor 5.4 mounted on the top of the feeding frame. The saw frame reciprocating mechanism is a linear slide, and the saw frame is connected to the slider of the linear slide. Of course, the saw frame reciprocating mechanism can also be an electric cylinder or other reciprocating mechanisms. In this embodiment, during the process of the circular saw cutting steel plates, the saw frame reciprocating mechanism drives the saw disc to feed from left to right (cutting steel plates from left to right).

[0040] The steel plate clamping device is used to clamp steel plates on a processing plane. The device includes a clamping block 4.1 located above the processing plane and a clamping block lifting mechanism 4.2 for driving the clamping block to rise and fall. In this embodiment, there are multiple clamping blocks, and they are distributed sequentially along the transverse track. The clamping block lifting mechanism corresponds to each clamping block and is used to lift and lower the corresponding block. The clamping block lifting mechanism can be a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

[0041] The transverse kerf holding device 2 includes a transverse insert 2.1 and a reciprocating movement mechanism 2.2 for driving the transverse insert to move. The movement direction of the transverse insert is parallel to the transverse track, and the transverse insert is located on one side of the saw disc. The transverse inserts are vertically distributed. In this embodiment, the transverse inserts are parallel to the transverse track and are distributed on the left side of the saw disc. The reciprocating movement mechanism is a transverse pneumatic cylinder, a transverse hydraulic cylinder, or a transverse electric cylinder. During the sawing process of the circular saw disc cutting the steel plate, the reciprocating movement mechanism drives the transverse insert to insert into the kerf of the steel plate.

[0042] In this embodiment, the transverse kerf holding device further includes a transverse support 2.3, on which the transverse insert is fixed. A transverse pneumatic cylinder, a transverse hydraulic cylinder, or a transverse electric cylinder is connected to the transverse support to drive the transverse support to move.

[0043] Furthermore, a kerf holding device for a circular saw also includes a vertical kerf holding device 3. The vertical kerf holding device includes a vertical insert 3.1 and an insert lifting mechanism 3.3 for driving the vertical insert to rise and fall. The vertical inserts are vertically distributed. In this embodiment, the vertical inserts are parallel to the transverse track. The insert lifting mechanism is an insert lifting cylinder, an insert lifting hydraulic cylinder, or an insert lifting electric cylinder. When the insert lifting mechanism moves the vertical insert to its highest position, the lowest point on the vertical insert is higher than the highest point on the saw disc. Thus, during the process of the saw frame reciprocating movement mechanism driving the saw disc to feed from left to right, interference between the saw disc and the vertical insert can be avoided. During the process of the circular saw disc sawing steel plates, the insert lifting mechanism drives the vertical insert to move downwards and insert into the kerf of the steel plate.

[0044] In this embodiment, the vertical saw kerf holding device further includes a lifting support 3.2, a vertical guide sleeve mounted on the frame, and a vertical guide rod 3.4 that cooperates with the vertical guide sleeve. The vertical insert is fixed to the lifting support, and the lower end of the vertical guide rod is connected to the lifting support. An insert lifting cylinder, a insert lifting hydraulic cylinder, or an insert lifting electric cylinder is connected to the lifting support to drive the lifting support to rise and fall.

[0045] There are two vertical inserts, which are distributed sequentially along the horizontal movement track. Each vertical insert has a corresponding lifting mechanism, used to raise or lower the corresponding vertical insert.

[0046] In this embodiment, during the process of the circular saw cutting steel plate, the steel plate on the processing plane is pressed by the steel plate clamping device. The saw frame reciprocating movement mechanism drives the saw plate to feed from left to right (cutting the steel plate from left to right). When the saw plate feeds to the right to the first designated position to form a kerf on the left side of the steel plate, the insert reciprocating movement mechanism drives the transverse insert to insert into the kerf of the steel plate. In this way, the width of the kerf can be maintained, effectively avoiding the problem of the saw plate's rotational cutting movement being affected by the kerf shrinkage during the steel plate sawing process, or even the saw plate getting stuck.

[0047] Next, the saw blade continues to feed to the right. When the saw blade has fed to the second designated position and cut a kerf in the steel plate directly below the vertical blade, the blade lifting mechanism drives the vertical blade to move downward and insert into the kerf in the steel plate. In this way, the vertical blade can cooperate with the horizontal blade to further maintain the width of the kerf, thereby effectively avoiding the problem of the saw blade's rotational cutting movement being affected by the kerf shrinkage during the steel plate sawing process, or even causing the saw blade to jam.

[0048] Next, after the saw blade cuts the steel plate, the reciprocating movement mechanism of the insert blade drives the horizontal insert blade to move to the left and reset, and the lifting mechanism of the insert blade drives the vertical insert blade to move upward and reset; then the reciprocating movement mechanism of the saw frame drives the saw blade to move to the left and reset.

[0049] In this second specific embodiment, the remaining structure is the same as in the first specific embodiment, except that:

[0050] like Figure 4 , Figure 5 As shown, a kerf holding device for a circular saw also includes a translational anti-misoperation protection device 7. The translational anti-misoperation protection device includes a support block 7.1 fixed on a transverse support and a saw frame block 7.2 located at the bottom of the saw frame for engaging with the support block. The saw frame block and the support block are distributed sequentially along the transverse track direction. The saw frame block is located between the support block and the saw disc. When the reciprocating movement mechanism of the insert blade drives the transverse insert blade to move towards the saw disc and causes the support block to abut against the saw frame block, there is a gap between the transverse insert blade and the saw disc. In the actual operation of steel plate sawing, the operator may make the following operational errors that cause damage to the transverse insert blade: specifically, during the sawing process of the circular saw blade cutting steel plates, before the horizontal feed position of the saw disc is reached, the operator drives the transverse insert blade close to the saw disc (intending to insert the transverse insert blade into the kerf), causing the transverse insert blade to contact the saw disc and be cut and damaged by the saw disc. To address this issue, this solution includes a specially designed anti-misoperation protection device. During the process of the circular saw cutting steel plates, if the horizontal feed position of the saw blade is not yet in place, the operator can drive the transverse blade closer to the saw blade. In this case, the support block will press against the saw frame block. At this time, there is a gap between the transverse blade and the saw blade, thus preventing the transverse blade from contacting the saw blade.

[0051] Furthermore, such as Figure 4 , Figure 5 As shown, a saw kerf holding device for a circular saw also includes a lifting anti-misoperation protection device 8. Two saw frame limiting blocks are provided on the frame. The saw frame is located between the two saw frame limiting blocks. The lifting anti-misoperation protection device includes a transverse stop 8.1 disposed on the saw frame and parallel to the transverse track. The transverse stop is located above the saw disc 5.3, and its length is greater than the diameter of the saw disc. In this embodiment, the vertical projection of the saw disc falls entirely within the vertical projection of the transverse stop. When the blade lifting mechanism moves the vertical blade to its highest position, and the saw frame abuts against the left saw frame limiting block, the transverse stop is located below the lifting support, preventing the lifting support from moving downwards.

[0052] In the actual operation of steel plate sawing, the operator may make the following operational errors that cause damage to the vertical blade. Specifically, during the sawing process of the circular saw, the saw blade is not fed to the right to the correct position (the saw blade has not yet cut a kerf in the steel plate directly below the vertical blade) when the operator drives the vertical blade to move downward, resulting in "the vertical blade colliding with the steel plate" or "the vertical blade contacting the saw blade", which causes damage to the vertical blade. To address this issue, this solution includes a specially designed lifting and anti-misoperation protection device. Specifically, when the saw blade is fed from left to right by the reciprocating mechanism of the saw frame (cutting steel plates from left to right), if the operator drives the vertical blade to move downwards before the saw blade has moved to the designated position (i.e., before the saw blade has cut a kerf on the steel plate directly below the vertical blade), the lifting support will abut against the horizontal stop bar. The horizontal stop bar will prevent the lifting support and the vertical blade from moving downwards, thereby avoiding "contact between the vertical blade and the saw blade" or "collision between the vertical blade and the steel plate".

[0053] Furthermore, such as Figure 4 , Figure 5 As shown, the lifting anti-misoperation protection device also includes a torsion spring, an anti-misoperation stop bar 8.2 rotatably mounted on the frame via a shaft 8.4, a limiting block mounted on the frame, and a top rod 8.3 mounted on the upper end of the vertical guide rod. The shaft is parallel to the transverse track, and the anti-misoperation stop bar is perpendicular to the transverse track. The limiting block has an upward-facing stop bar groove 8.5 that mates with the anti-misoperation stop bar, with the opening of the stop bar groove facing upward. The end of the stop bar groove facing the shaft is open. The torsion spring provides elastic force to cause the anti-misoperation stop bar to rotate downward around the shaft. In this embodiment, the anti-misoperation stop bar is located on the right side of the vertical saw kerf retention device.

[0054] like Figure 5 As shown, during the process of the vertical blade descending driven by the blade lifting mechanism, the anti-misoperation bar will rotate downward around the shaft under the action of the torsion spring until the end of the anti-misoperation bar enters the stop bar slot and abuts against the bottom surface of the stop bar slot. At this time, the anti-misoperation bar is located on the moving trajectory of the saw frame. When the saw frame moves to the anti-misoperation bar along the transverse track, the saw frame will be blocked by the anti-misoperation bar.

[0055] During the process of the vertical blade rising driven by the blade lifting mechanism, the top rod will abut against the anti-misoperation barrier and push the anti-misoperation barrier to rotate upward around the shaft, so that the saw frame can move along the transverse track without being blocked by the anti-misoperation barrier.

[0056] After the saw blade cuts the steel plate, the saw frame reciprocating mechanism can only drive the saw blade to move to the left and reset after the vertical blade lifting mechanism has driven it upwards and reset; otherwise, the saw blade will collide with the vertical blade. In actual operation, the operator may drive the saw blade to move to the left and reset before the vertical blade has moved upwards and reset, causing a collision. To solve this problem, in this embodiment, an anti-misoperation stop is installed on the lifting anti-misoperation protection device. Specifically…

[0057] After the saw blade cuts the steel plate, if the operator operates normally, the vertical blade will first be driven to move upward and reset via the blade lifting mechanism. During this process, the top rod will abut against the anti-misoperation bar and push the anti-misoperation bar to rotate upward around the shaft, so that the saw frame can move along the transverse track without being blocked by the anti-misoperation bar. Then, the saw frame reciprocating movement mechanism will drive the saw blade to move to the left and reset without being affected.

[0058] After the saw blade cuts the steel plate, if the operator drives the saw blade to move to the left to reset before the vertical blade has moved upward to reset, the anti-misoperation bar will rotate downward around the shaft under the action of the torsion spring and abut against the bottom surface of the bar slot. The anti-misoperation bar is located on the moving track of the saw frame. When the saw frame moves to the anti-misoperation bar along the transverse track, the saw frame will be blocked by the anti-misoperation bar, thus avoiding the problem of the saw blade colliding with the vertical blade.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, alterations, and equivalent transformations made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A kerf retention device for a circular saw, characterized in that it comprises: The frame has a processing plane for placing the steel plate to be sawed. A transverse kerf holding device includes a transverse insert and a reciprocating movement mechanism for driving the transverse insert to move. The transverse insert is vertically distributed and located on one side of the saw disc of the circular saw. During the process of the circular saw saw cutting the steel plate, the reciprocating movement mechanism drives the transverse insert to insert into the kerf of the steel plate. The translational anti-misoperation protection device includes a transverse track on the frame and a saw frame that moves along the transverse track. The saw disc is rotatably mounted on the saw frame. The transverse kerf retention device also includes a transverse support. A transverse insert is fixed on the transverse support. The translational anti-misoperation protection device includes a support block fixed on the transverse support and a saw frame block located at the bottom of the saw frame for cooperating with the support block. The saw frame block is located between the support block and the saw disc.

2. The saw kerf retention device for a circular saw according to claim 1, characterized in that, It also includes a vertical kerf holding device, which includes a vertical insert and an insert lifting mechanism for driving the vertical insert to rise and fall. When the insert lifting mechanism moves the vertical insert to the highest position, the lowest point on the vertical insert is higher than the highest point on the saw disc. During the process of the circular saw cutting steel plates, the insert lifting mechanism drives the vertical insert to move downward and insert into the kerf of the steel plate.

3. The saw kerf retention device for a circular saw according to claim 2, characterized in that, It also includes a lifting and anti-misoperation protection device. The frame is equipped with a transverse track and a saw frame that moves along the transverse track. The saw disc is rotatably mounted on the saw frame. The frame is equipped with two left and right saw frame limiting blocks, and the saw frame is located between the two left and right saw frame limiting blocks. The vertical saw kerf holding device also includes a lifting support, and a vertical insert is fixed on the lifting support. The lifting anti-misoperation protection device includes a transverse stop bar installed on the saw frame and parallel to the transverse track. The transverse stop bar is located above the saw disc, and its length is greater than the diameter of the saw disc. When the blade lifting mechanism moves the vertical blade to the highest position and the saw frame abuts against the left saw frame limit block, the transverse stop bar is located below the lifting support to prevent the lifting support from moving downward.

4. The saw kerf retention device for a circular saw according to claim 3, characterized in that, The vertical saw kerf retention device also includes a vertical guide sleeve mounted on the frame and a vertical guide rod that cooperates with the vertical guide sleeve. The lower end of the vertical guide rod is connected to the lifting support. The lifting anti-misoperation protection device also includes a torsion spring, an anti-misoperation stop rod that is rotatably mounted on the frame via a shaft, a limit block mounted on the frame, and a top rod mounted on the upper end of the vertical guide rod. The limit block has an upward-facing stop rod slot that cooperates with the anti-misoperation stop rod, and the opening of the stop rod slot faces upward. During the process of the blade lifting mechanism driving the vertical blade to descend, the anti-misoperation bar will rotate downward around the shaft under the action of the torsion spring until the end of the anti-misoperation bar enters the stop bar slot and abuts against the bottom surface of the stop bar slot. At this time, the anti-misoperation bar is located on the moving trajectory of the saw frame. When the saw frame moves along the transverse track to the anti-misoperation bar, the saw frame will be blocked by the anti-misoperation bar. During the process of the vertical blade rising driven by the blade lifting mechanism, the top rod will abut against the anti-misoperation barrier and push the anti-misoperation barrier to rotate upward around the shaft, so that the saw frame can move along the transverse track without being blocked by the anti-misoperation barrier.

5. The saw kerf retention device for a circular saw according to claim 2, characterized in that, The insert lifting mechanism is an insert lifting cylinder.

6. The saw kerf retention device for a circular saw according to claim 2, characterized in that, The vertical inserts are arranged vertically.

7. The saw kerf retention device for a circular saw according to claim 1, characterized in that, When the reciprocating movement mechanism of the insert blade drives the transverse insert blade to move towards the saw disc and causes the support block to abut against the saw frame block, there is a gap between the transverse insert blade and the saw disc.

8. The saw kerf retention device for a circular saw according to claim 1, characterized in that, The lateral inserts move in a horizontally distributed direction.

9. The kerf retention device for a circular saw according to claim 1, characterized in that, The reciprocating movement mechanism of the insert is a transverse cylinder, a transverse hydraulic cylinder, or a transverse electric cylinder.

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