Stone bench saw

Abstract

The stone bench saw comprises a machine body, a saw blade, a driving motor and a cutting table, the cutting table is arranged on the machine body in a sliding fit mode and provided with a cutting groove, the side wall, away from the saw blade, of the cutting table is connected with a flange, the machine body is provided with a movement limiting assembly for limiting movement of the cutting table, and the end of the machine body is rotationally connected with a rotating frame; the saw blade is rotationally connected to one end of the rotating frame and aligned with the cutting groove, the driving motor is installed on the rotating frame and connected with the saw blade, the saw blade is located above the cutting table, foot bars are arranged at the bottom of the machine body, one end of each foot bar is rotationally connected to the machine body and connected with a transmission plate, a transmission frame is rotationally connected to the transmission plate, and the transmission frame is rotationally connected with the rotating frame. A rotation limiting assembly for limiting the rotation angle of the rotating frame is arranged on the machine body, and a reset piece for resetting the foot bar and a pre-adjusting assembly for pre-adjusting the position of the saw blade are further arranged on the machine body. The stone bench saw has the effect of improving the applicability of the stone bench saw.

Description

Technical Field

[0001] This application relates to the field of table saw technology, and in particular to a stone table saw. Background Technology

[0002] Stone table saws are heavy-duty table saws specifically designed for cutting stone (marble, granite, quartz, etc.). They are primarily used in stone processing, building decoration, curtain wall installation, and other scenarios, and can meet processing needs such as straight cutting, chamfering, and grooving of stone.

[0003] Chinese patent CN2695205Y discloses a stone cutting machine, which includes a frame, a worktable, and a motor. A saw blade is mounted above the worktable and connected to the motor. A track is mounted on the frame below the worktable, and the worktable rests on the track. A toothed rod is located below the worktable. A shaft is mounted on the frame, and a small gear is mounted on the shaft. The toothed rod meshes with the small gear. A manual wheel is mounted on the frame, and the shaft is connected to the manual wheel. This invention is small in size, lightweight, simple to manufacture, and easy to use. It can cut various types of stone and can cut any material as needed. It has high working efficiency and produces high-precision cuts.

[0004] Regarding the aforementioned technologies, in existing technologies, the stone is installed on a workbench, and a small gear is rotated by a manual wheel. The moving workbench moves the stone, while a motor rotates the saw blade to cut the stone. However, the lower half of the saw blade is located below the workbench, which means that the bottom of the stone is cut first, and the stone is subjected to force from bottom to top. Therefore, a fixture must be applied to the workbench to clamp the stone and prevent it from jumping. This requires clamping the stone with a fixture for each cut, increasing the stone installation time and reducing the applicability of the stone cutting machine. Summary of the Invention

[0005] To improve the applicability of stone table saws, this application provides a stone table saw.

[0006] The technical solution for the stone bench saw provided in this application is as follows: A stone table saw includes a body, a saw blade, a drive motor, and a cutting table. The cutting table is slidably fitted onto the body and has a cutting groove. A retaining edge is connected to the side wall of the cutting table away from the saw blade. A movement limiting component is provided on the body to restrict the movement of the cutting table. A rotating frame is rotatably connected to the end of the body. The saw blade is rotatably connected to one end of the rotating frame and aligned with the cutting groove. The drive motor is mounted on the rotating frame and connected to the saw blade. The saw blade is located above the cutting table. A foot bar is provided at the bottom of the body. One end of the foot bar is rotatably connected to the body and connected to a transmission plate. A transmission frame is rotatably connected to the transmission plate and rotatably connected to the rotating frame. A rotation limiting component is provided on the body to limit the rotation angle of the rotating frame. The body also has a reset component for resetting the foot bar and a pre-adjustment component for pre-adjusting the position of the saw blade.

[0007] By adopting the above technical solution, during cutting, the stone is placed on the cutting table and pressed against the retaining edge. The position of the saw blade is then pre-adjusted using the pre-adjustment component. The drive motor is started, causing the saw blade to rotate. Pressing the other end of the foot lever rotates the transmission plate, moving the transmission frame and causing the rotating frame to rotate, which in turn lowers the saw blade, achieving the effect of cutting the stone. The saw blade moves around the rotation center of the rotating frame. During the cutting process, the saw blade applies pressure to the stone from top to bottom, keeping the stone pressed firmly against the retaining edge. Simultaneously, the stone is not jolted by the pressure of the saw blade, and when the saw blade enters the stone, the stone is restricted from horizontal movement, allowing the stone to be smoothly cut. Compared to existing technologies, no additional tooling to restrict stone movement is needed, shortening the stone installation time and improving the applicability of the stone table saw.

[0008] Optionally, the machine body is provided with a drain trough, the inner bottom wall of the drain trough is provided with a drain hole and a plug for sealing the drain hole, the outer bottom wall of the drain trough is connected to a drain pipe extending to the outside of the machine body, the drain pipe is connected to the drain hole, the cutting table is located on the drain trough, and the saw blade is provided with a spray pipe for cooling the saw blade.

[0009] By adopting the above technical solution, when the saw blade cuts stone, the cutting edge of the saw blade heats up rapidly, and stone debris may adhere to the cutting edge, reducing the sharpness of the saw blade and making it more susceptible to damage. By spraying liquid onto the saw blade through the drain pipe during stone cutting to quickly cool the cutting edge, the possibility of stone debris adhering to the saw blade cutting edge is reduced, thus extending the service life of the saw blade.

[0010] Optionally, the rotation limiting component includes a limiting rod, a connecting rod, and a stop. The connecting rod is connected to the other end of the rotating frame. The rotation center of the transmission frame is located between the connecting rod and the rotation center of the rotating frame. The limiting rod is rotatably connected to the machine body, and two rods are provided. The limiting rod has a limiting groove. The connecting rod is located between the two limiting rods. The stop has a threaded portion that passes through the limiting groove and is threadedly engaged with the end of the limiting rod.

[0011] By adopting the above technical solution, during cutting, the rotating frame rotates, which drives the connecting rod to rotate. The connecting rod moves the limiting rod through the limiting groove until the threaded part of the stop block abuts the end of the limiting groove, thereby limiting the rotation of the rotating frame and achieving the effect of limiting the travel of the saw blade.

[0012] Optionally, the pre-adjustment assembly includes a bearing housing, an adjusting screw, and a drive rod. A support block is connected to the pedal, and the bearing housing is connected to the support block. The bearing housing is a self-aligning bearing housing. The adjusting screw is rotatably connected to the bearing housing, and an adjusting handwheel is connected to the end of the adjusting screw. One end of the drive rod is rotatably connected to the transmission plate, and the other end is connected to a female block. The adjusting screw is threadedly engaged with the female block.

[0013] By adopting the above technical solution, when the stone size varies and the initial position of the saw blade is far from the stone, using only the foot lever to drive the saw blade down results in a long stroke and is time-consuming. To pre-adjust the saw blade position, rotating the adjusting handwheel drives the adjusting screw, which in turn pulls the drive rod via the mother block, causing the transmission plate to rotate, thus achieving the effect of quickly pre-adjusting the saw blade position.

[0014] Optionally, the displacement limiting component includes a fixed column, a first brake plate, a rotating shaft, a toggle plate, and a preload spring. The fixed column is horizontally connected to the baffle. Sliding grooves are opened on both sides of the drainage channel. An extension column passing through the sliding groove is connected to the end of the fixed column. The extension column is a rectangular column. The first brake plate is sleeved on the extension column and located outside the drainage channel. The rotating shaft is vertically rotatably connected to the extension column. The toggle plate is connected to the rotating shaft and is bent. The toggle plate has a first groove and a second groove. The first groove communicates with the second groove. The extension column passes through the first groove. A connecting column is connected to the first brake plate. An abutment ring is sleeved on the connecting column, and a retaining ring is connected to its end. The extension column passes through the second groove. The preload spring is sleeved on the connecting column and located between the retaining ring and the abutment ring. A locking member is provided on the extension column to restrict the rotation of the toggle plate. When displacement is limited, the first brake plate is in contact with the outer wall of the drainage channel.

[0015] By adopting the above technical solution, when restricting the movement of the cutting table, the cutting table is moved to a designated position, and then the actuating plate is rotated. The bent part of the actuating plate presses against the first brake plate, the first brake plate moves and presses against the outer wall of the drain tank. Then, the rotation of the actuating plate is restricted by the locking device, thus achieving the effect of restricting the movement of the cutting table.

[0016] Optionally, the extension column is provided with an auxiliary component, which includes a second brake plate, a connecting frame, and a return spring. The extension column has a limiting groove, and the connecting frame is slidably fitted in the limiting groove. The second brake plate is sleeved on the extension column and located in the drainage groove. The second brake plate is connected to one end of the connecting frame, and the connecting frame is slidably fitted in the limiting groove. The rotating shaft is rotatably connected to the other end of the connecting frame. The return spring is disposed in the limiting groove and connected between the end of the limiting groove near the first brake plate and the connecting frame. Normally, the connecting frame abuts against the other end of the limiting groove.

[0017] By adopting the above technical solution, when the cutting table is restricted from moving, the rotating actuating plate first applies pressure to the first brake plate until it presses against the outer wall of the drain trough. Then, pressure is applied to the first brake plate, causing the connecting frame to move and drive the second brake plate to move until it contacts the inner wall of the drain trough. At this point, the return spring and preload spring are compressed, achieving the effect of the first and second brake plates pressing firmly against the drain trough. By having the first and second brake plates press against the side wall of the drain trough, the contact area between the first brake plate and the drain trough is increased, further reducing the possibility of the cutting table moving.

[0018] Optionally, the locking element is a rotating hook plate, one end of which is rotatably connected to the extension column, and one end of the actuating plate is connected to a locking rod. When the first brake plate is in contact with the outer wall of the drainage groove, the locking element hooks the locking rod.

[0019] By adopting the above technical solution, when the toggle plate is restricted from rotating, the locking component is rotated, the locking component abuts against the locking rod, the locking component deforms, passes through and latches the locking rod, thereby restricting the toggle plate from rotating in the opposite direction, and achieving the effect of locking the toggle plate.

[0020] Optionally, the surface of the cutting table is provided with a wear-resistant pad.

[0021] By adopting the above technical solution, the wear-resistant pad is used to further increase the friction between the stone and the cutting table, and further reduce the possibility of the stone moving when it is being cut.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. During cutting, the stone is placed on the cutting table, against the retaining edge. The saw blade position is then pre-adjusted using the pre-adjustment assembly. The drive motor is started, causing the saw blade to rotate. Pressing the other end of the foot lever rotates the transmission plate, moving the transmission frame and causing the rotating frame to rotate, which in turn lowers the saw blade, achieving the effect of cutting the stone. The saw blade moves around the rotation center of the rotating frame. During the cutting process, the saw blade applies pressure to the stone from top to bottom, keeping the stone firmly against the retaining edge. Simultaneously, the stone is prevented from jumping due to the pressure from the saw blade. Furthermore, when the saw blade enters the stone, it is restricted from horizontal movement, allowing the stone to be smoothly cut. Compared to existing technologies, this eliminates the need for additional tooling to restrict stone movement, shortens the stone installation time, and improves the applicability of the stone table saw. 2. When restricting the movement of the cutting table, move the cutting table to the designated position, then rotate the actuating plate. The bent part of the actuating plate presses against the first brake plate. The first brake plate moves and presses against the outer wall of the drain tank. Then, the locking device restricts the rotation of the actuating plate, thus achieving the effect of restricting the movement of the cutting table. 3. When restricting the movement of the cutting table, the rotating actuating plate first applies pressure to the first brake plate until it presses against the outer wall of the drain trough. Then, pressure is applied to the first brake plate, causing the connecting frame to move and drive the second brake plate to move until it contacts the inner wall of the drain trough. The return spring and preload spring are compressed, achieving the effect of the first and second brake plates pressing firmly against the drain trough. By having the first and second brake plates press against the side wall of the drain trough, the contact area between the first brake plate and the drain trough is increased, further reducing the possibility of the cutting table moving. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the stone table saw in the embodiments of this application.

[0024] Figure 2 This is a cross-sectional view used in the embodiments of this application to illustrate the structure of the stone table saw.

[0025] Figure 3 This is a schematic diagram of the structure of the limited-transfer component in the embodiments of this application.

[0026] Figure 4 This is a schematic diagram of the cutting table and drainage tank in the embodiments of this application.

[0027] Figure 5 This is a cross-sectional view used in the embodiments of this application to illustrate the structure of the displacement limiting component.

[0028] Figure 6 This is an exploded view used in the embodiments of this application to illustrate the structure of the displacement limiting component and the auxiliary component.

[0029] Figure 7 This is a diagram showing the working state of the displacement limiting component in the embodiments of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Machine body; 11. Step lever; 111. Reset component; 12. Transmission plate; 13. Transmission frame; 14. Rotating frame; 141. Operating handle; 2. Saw blade; 21. Drive motor; 3. Cutting table; 31. Cutting groove; 32. Wear-resistant pad; 33. Edge guard; 4. Pre-adjustment assembly; 41. Bearing seat; 42. Adjusting screw; 43. Drive rod; 431. Mother block; 5. Rotation limiting assembly; 51. Limiter 511. Rod; 52. Limiting groove; 53. Connecting rod; 54. Stop block; 6. Drainage groove; 61. Plug; 62. Drainage pipe; 7. Movement limiting component; 71. Fixed column; 711. Extension column; 72. First brake plate; 73. Rotating shaft; 74. Actuating plate; 741. Locking rod; 75. Preload spring; 8. Auxiliary component; 81. Second brake plate; 82. Connecting frame; 83. Return spring; 9. Locking component; 91. Extension plate. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0032] This application discloses a stone table saw. (Refer to...) Figure 1 The stone table saw includes a body 1, a saw blade 2, a drive motor 21, and a cutting table 3. A platform is provided on the body 1, and a rotating frame 14 is rotatably connected to the platform. The saw blade 2 is rotatably connected to one end of the rotating frame 14. The drive motor 21 is mounted on the rotating frame 14 and is connected to the saw blade 2 via belt drive.

[0033] Reference Figure 1 and Figure 2 The machine body 1 has a foot lever 11 on its bottom wall. One end of the foot lever 11 is rotatably connected to the machine body 1 and fixedly connected to a transmission plate 12. A transmission frame 13 is rotatably connected between the transmission plate 12 and the rotating frame 14. The machine body 1 has a pre-adjustment assembly 4, which includes a bearing seat 41, an adjusting screw 42, and a drive rod 43. The other end of the foot lever 11 is fixedly connected to a support block. The bearing seat 41 is bolted to the support block and is a self-aligning bearing seat. The adjusting screw 42 is rotatably connected to the bearing seat 41 and has an adjusting handwheel fixedly connected to its end. One end of the drive rod 43 is hinged to the transmission plate 12, and the other end is fixedly connected to a mother block 431, which is threadedly engaged with the adjusting screw 42. An operating handle 141 is also fixedly connected to the rotating frame 14. The operating handle 141 is used to facilitate the operator in adjusting the height of the saw blade 2.

[0034] Reference Figure 1 and Figure 3The machine body 1 is equipped with a rotation limiting assembly 5, which includes a limiting rod 51, a connecting rod 52, and a stop 53. The connecting rod 52 is fixedly connected to the rotating frame 14, and the transmission frame 13 is located between the rotation center of the connecting rod 52 and the rotating frame 14. One end of the limiting rod 51 is hinged to the machine body 1, and two limiting rods are provided. The ends of the limiting rods 51 are aligned with the ends of the connecting rods 52, and the limiting rods 51 have limiting grooves 511. The stop 53 is fixedly connected with a threaded part, which passes through the limiting groove 511 and is threadedly engaged with the end of the connecting rod 52.

[0035] When the height of the saw blade 2 is pre-adjusted, the adjusting handwheel is turned, which drives the adjusting screw 42 to rotate, the transmission plate 12 to rotate, which drives the transmission frame 13 to move, causing the rotating frame 14 to rotate, the connecting rod 52 to move, which drives the limiting rod 51 to swing, and the saw blade 2 to descend to the specified position, thus achieving the effect of real-time adjustment of the initial position of the saw blade 2.

[0036] Reference Figure 2 and Figure 4 The machine body 1 is equipped with a drain trough 6, which is lower than the raised platform. A reset component 111, which is a reset spring, is installed on the machine body 1 between the other end of the foot lever 11 and the outer bottom wall of the drain trough 6. The bottom of the drain trough 6 has a drain hole and a plug 61 to seal the drain hole. A drain pipe 62 is fixedly connected to the outer bottom wall of the drain trough 6, with its top end connected to the drain hole and its bottom end extending to the outside of the machine body 1. A spray pipe for spraying coolant is installed on the saw blade 2, with the spray pipe facing the saw blade 2.

[0037] The drain tank 6 is used to collect coolant and stone debris, and finally the coolant and stone debris are discharged by pulling out the plug 61.

[0038] Reference Figure 2 and Figure 4 The drain trough 6 has sliding rails fixedly connected to both sides. Two rows of sliding bearings are installed at the bottom of the cutting table 3, which slides along the sliding rails. A cutting groove 31 is provided on the cutting table 3, aligned with the saw blade 2. A retaining edge 33 is fixedly connected to the side of the cutting table 3 away from the saw blade 2, used to restrict stone movement. A wear-resistant pad 32, made of rubber, is fixedly connected to the surface of the cutting table 3 to increase friction between the stone and the cutting table 3.

[0039] Refer to Figure 5 and Figure 6The machine body 1 is equipped with a limiting component 7, which includes a fixed column 71, a first brake plate 72, a rotating shaft 73, a toggle plate 74, and a preload spring 75. The fixed column 71 is horizontally fixedly connected to the flange 33, and extension columns 711 are fixedly connected to both ends of the fixed column 71. The extension columns 711 are rectangular columns. Sliding grooves are opened on both sides of the drain trough 6, and the extension columns 711 slide with the sliding grooves and extend to the outside of the drain trough 6. The first brake plate 72 is sleeved on the extension column 711 and is located outside the drain trough 6.

[0040] Refer to Figure 5 and Figure 6 An auxiliary component 8 is provided on the extension column 711. The auxiliary component 8 includes a second brake plate 81, a connecting frame 82, and a return spring 83. The second brake plate 81 is sleeved on the extension column 711 and located within the drain groove 6. A wear-resistant pad 32 is fixedly connected to both the first brake plate 72 and the second brake plate 81, which are arranged opposite to each other. A limiting groove is opened on the extension column 711, and the connecting frame 82 is slidably fitted within the limiting groove. One end of the connecting frame 82 is fixedly connected to the second brake plate 81, and a rotating shaft 73 is vertically rotatably connected to the other end of the connecting frame 82. The return spring 83 is installed between the other end of the connecting frame 82 and the end of the limiting groove near the first brake plate 72, and is located within the limiting groove.

[0041] Reference Figure 6 and Figure 7 The actuating plate 74 is bent and has a first groove and a second groove that are connected. An extension post 711 passes through the first groove. One end of the actuating plate 74 passes through a rotating shaft 73 and is connected to the rotating shaft 73 by bolts. A connecting post is fixedly connected to the first brake plate 72. The connecting post passes through the second groove and a retaining ring is fixedly connected to the end of the connecting post. An abutment ring is fitted on the connecting post. A preload spring 75 is fitted on the connecting post and is located between the retaining ring and the abutment ring. The bent part of the bent plate abuts against the first brake plate 72.

[0042] Reference Figure 6 and Figure 7 An extension post 711 is equipped with a locking element 9, which is a rotating hook plate. A locking rod 741, a rectangular rod, is fixedly connected to one end of a toggle plate 74. One end of the locking element 9 is hinged to the extension post 711; when locked, the other end of the locking element 9 hooks onto the locking rod 741. An extension plate 91 for controlling the rotation of the locking element 9 is fixedly connected to the locking element 9.

[0043] When restricting the cutting table 3, push the cutting table 3 to the designated position, rotate the actuating plate 74, and the first brake plate 72 moves under the pressure of the actuating plate 74 until it is in contact with the outer wall of the drain tank 6. Continue to apply pressure to the actuating plate 74, and the rotating shaft 73 moves, the connecting frame 82 moves, and drives the second brake plate 81 to move until the second brake plate 81 is in contact with the inner wall of the drain tank 6. Finally, flip the locking member 9, and the end of the locking member 9 abuts against the locking rod 741 and deforms. The end of the locking member 9 passes through and locks the locking rod 741, thereby restricting the rotation of the actuating plate 74 and achieving the effect of restricting the movement of the cutting table 3. The restricting component and the auxiliary component 8 work together to restrict the cutting table 3 using only one end, and two sets are set up for convenient operation by the staff.

[0044] The implementation principle of a stone table saw according to an embodiment of this application is as follows: When cutting stone, the stone is placed on the wear-resistant pad 32 and against the retaining edge 33 to ensure that the stone cutting part is aligned with the cutting groove 31. Then, the cutting table 3 is pushed to the bottom of the saw blade 2, and the actuating plate 74 is rotated to move the first brake plate 72 and make it against the outer wall of the drainage groove 6. At the same time, the rotating shaft 73 moves, driving the second brake plate 81 to move until the second brake plate 81 is against the inner wall of the drainage groove 6. Finally, the locking member 9 is flipped over, and the locking member 9 deforms and locks the locking rod 7. 41. To restrict the cutting table 3, turn the adjusting handwheel to move the drive rod 43, rotate the transmission plate 12, and rotate the rotating frame 14, which will move the saw blade 2 above the stone. Then start the drive motor 21 to rotate the saw blade 2. The operator steps on the end of the foot pedal 11 to rotate the transmission plate 12 and the rotating frame 14, which will lower the saw blade 2 to cut the stone until the stop block 53 touches the end of the limiting groove 511. At this time, the saw blade 2 is partially below the cutting table 3, thus achieving the effect of cutting the stone.

[0045] The saw blade 2 descends around the rotation center of the rotating frame 14. During the stone cutting process, the saw blade 2 applies pressure to the stone from top to bottom, and the stone presses against the retaining edge 33. At the same time, the stone will not jump due to the pressure of the saw blade 2. When the saw blade 2 enters the interior of the stone, the stone will not move horizontally due to the restriction of the saw blade 2, so that the stone can be cut smoothly by the saw blade 2. Compared with the existing technology, there is no need to add additional tooling to restrict the movement of the stone, which shortens the stone installation time and improves the applicability of the stone table saw.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stone table saw, comprising a body (1), a saw blade (2), a drive motor (21), and a cutting table (3), characterized in that: The cutting table (3) is slidably fitted on the machine body (1) and is provided with a cutting groove (31). A retaining edge (33) is connected to the side wall of the cutting table (3) away from the saw blade (2). A limiting component (7) is provided on the machine body (1) to restrict the movement of the cutting table (3). A rotating frame (14) is rotatably connected to the end of the machine body (1). The saw blade (2) is rotatably connected to one end of the rotating frame (14) and aligned with the cutting groove (31). The drive motor (21) is mounted on the rotating frame (14) and connected to the saw blade (2). The saw blade (2) is positioned... Above the cutting table (3), a foot bar (11) is provided at the bottom of the machine body (1). One end of the foot bar (11) is rotatably connected to the machine body (1) and connected to a transmission plate (12). A transmission frame (13) is rotatably connected to the transmission plate (12). The transmission frame (13) is rotatably connected to the rotating frame (14). A rotation limiting component (5) is provided on the machine body (1) to limit the rotation angle of the rotating frame (14). A reset component (111) for resetting the foot bar (11) and a pre-adjustment component (4) for pre-adjusting the position of the saw blade (2) are also provided on the machine body (1).

2. The stone bench saw according to claim 1, characterized in that: The machine body (1) is provided with a drain trough (6), the inner bottom wall of the drain trough (6) is provided with a drain hole and a plug (61) for sealing the drain hole, the outer bottom wall of the drain trough (6) is connected to a drain pipe (62) extending to the outside of the machine body (1), the drain pipe (62) is connected to the drain hole, the cutting table (3) is located on the drain trough (6), and the saw blade (2) is provided with a spray pipe for cooling the saw blade (2).

3. The stone bench saw according to claim 1, characterized in that: The rotation limiting component (5) includes a limiting rod (51), a connecting rod (52), and a stop (53). The connecting rod (52) is connected to the other end of the rotating frame (14). The rotation center of the transmission frame (13) is located between the rotation center of the connecting rod (52) and the rotation center of the rotating frame (14). The limiting rod (51) is rotatably connected to the machine body (1), and two rods are provided. The limiting rod (51) has a limiting groove (511). The connecting rod (52) is located between the two limiting rods (51). The stop (53) has a threaded part. The threaded part passes through the limiting groove (511) and is threadedly engaged with the end of the limiting rod (51).

4. The stone bench saw according to claim 1, characterized in that: The pre-adjustment component (4) includes a bearing seat (41), an adjusting screw (42), and a drive rod (43). A support block is connected to the pedal (11). The bearing seat (41) is connected to the support block. The bearing seat (41) is a self-aligning bearing seat. The adjusting screw (42) is rotatably connected to the bearing seat (41). An adjusting handwheel is connected to the end of the adjusting screw (42). One end of the drive rod (43) is rotatably connected to the transmission plate (12), and the other end is connected to a female block (431). The adjusting screw (42) and the female block (431) are threaded together.

5. The stone bench saw according to claim 2, characterized in that: The limiting component (7) includes a fixed column (71), a first brake plate (72), a rotating shaft (73), a toggle plate (74), and a preload spring (75). The fixed column (71) is horizontally connected to the baffle (33). Sliding grooves are provided on both sides of the drain trough (6). An extension column (711) passing through the sliding groove is connected to the end of the fixed column (71). The extension column (711) is a rectangular column. The first brake plate (72) is sleeved on the extension column (711) and located outside the drain trough (6). The rotating shaft (73) is vertically rotatably connected to the extension column (711). The toggle plate (74) is connected to the baffle (75). On the rotating shaft (73), and bent, the actuating plate (74) has a first groove and a second groove, the first groove and the second groove are connected, the extension column (711) passes through the first groove, the first brake plate (72) is connected to a connecting column, the connecting column is fitted with an abutment ring, and the end is connected with a retaining ring, the extension column (711) passes through the second groove, the preload spring (75) is fitted on the connecting column and is located between the retaining ring and the abutment ring, the extension column (711) is provided with a locking member (9) to restrict the rotation of the actuating plate (74), when the movement is restricted, the first brake plate (72) is in contact with the outer wall of the drain groove (6).

6. The stone bench saw according to claim 5, characterized in that: An auxiliary component (8) is provided on the extension column (711). The auxiliary component (8) includes a second brake plate (81), a connecting frame (82), and a return spring (83). A limiting groove is opened on the extension column (711). The connecting frame (82) is slidably fitted in the limiting groove. The second brake plate (81) is sleeved on the extension column (711) and located in the drain groove (6). The second brake plate (81) is connected to one end of the connecting frame (82). The connecting frame (82) is slidably fitted in the limiting groove. The rotating shaft (73) is rotatably connected to the other end of the connecting frame (82). The return spring (83) is provided in the limiting groove and is connected between the end of the limiting groove near the first brake plate (72) and the connecting frame (82). Normally, the connecting frame (82) abuts against the other end of the limiting groove.

7. The stone bench saw according to claim 5, characterized in that: The locking member (9) is a rotating hook plate. One end of the locking member (9) is rotatably connected to the extension column (711). One end of the actuating plate (74) is connected to a locking rod (741). When the first brake plate (72) is in contact with the outer wall of the drain trough (6), the locking member (9) hooks the locking rod (741).

8. The stone bench saw according to claim 1, characterized in that: The surface of the cutting table (3) is provided with a wear-resistant pad (32).

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