A double edge grinding machine

Abstract

The utility model provides a kind of double edge grinding machine, including rack, first edge grinding mechanism and second edge grinding mechanism are symmetrically equipped on the rack to polish stone two sides simultaneously, conveying mechanism is further equipped between first edge grinding mechanism and second edge grinding mechanism on the rack, the conveying mechanism includes conveying belt, the conveying belt can be cyclically reciprocated and be installed on the rack, conveying section is formed on the conveying belt above the rack, the rack is equipped with the grinding plate for frictional contact with the conveying belt below conveying section, the grinding plate is detachably installed on the rack so as to replace grinding plate in time after grinding plate wears out.The utility model sets grinding plate between edge grinding machine rack and conveying belt, to avoid that edge grinding machine rack and conveying belt are directly contacted, and grinding plate is detachable structure, grinding plate can be replaced in time after grinding plate is worn to a certain degree, to avoid that conveying belt rubs rack, causes abrasion to rack, to prolong the service life of edge grinding machine.

Description

Technical Field

[0001] This utility model relates to the field of stone processing equipment, specifically to a double-sided edge grinding machine. Background Technology

[0002] In the field of tile or stone processing equipment, edge grinding machines are widely used as grinding devices for the straight edges of tiles or stones. Edge grinding machines typically use conveyor belts to transport the stone. During processing, to prevent the stone from shifting and to ensure processing accuracy, a certain pressure is usually applied to the stone. Combined with the weight of the stone itself, the conveyor belt will sag and come into contact with the machine frame. During the transport process, the conveyor belt will continuously rub against the machine frame, causing wear and tear on the frame and thus affecting its service life.

[0003] In view of this, the applicant in this case conducted in-depth research on the above issues, which led to the occurrence of this case. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned shortcomings by providing a double-sided edge grinding machine that can simultaneously grind both sides of stone and effectively avoid wear caused by direct contact and friction between the edge grinding machine frame and the conveyor belt, thereby extending the service life of the edge grinding machine frame.

[0005] The solution adopted by this utility model to solve the technical problem is: a double-sided edge grinding machine, including a frame, on which a first edge grinding mechanism and a second edge grinding mechanism are symmetrically arranged to simultaneously grind both sides of the stone. The frame is also provided with a conveying mechanism located between the first edge grinding mechanism and the second edge grinding mechanism. The conveying mechanism includes a conveyor belt, which is reciprocally mounted on the frame. A conveying section is formed on the conveyor belt located above the frame. A grinding plate is provided on the frame located below the conveying section for frictional contact with the conveyor belt. The grinding plate is detachably mounted on the frame so that it can be replaced in time after wear.

[0006] Furthermore, the conveyor belt needs to provide support to the stone during transport so that the edge grinding machine can grind and chamfer the stone. To ensure that the conveyor belt can support the stone during transport and prevent friction between the conveyor belt and the frame, the grinding plate includes a straight plate for frictional contact with the conveyor belt, inclined plates on the front and rear sides of the straight plate, and a mounting plate on the outer side of the inclined plates. The upper side of the frame is provided with a mounting surface for mounting the straight plate. The straight plate is located on the mounting surface. The inclined plates extend downward from the straight plate to guide the conveyor belt to slide onto the straight plate. The mounting plate extends downward from the inclined plates to connect with the frame, thereby detachably mounting the grinding plate on the frame.

[0007] Furthermore, to constrain the conveyor belt for precise stone transport and prevent stone misalignment from affecting the edge grinding accuracy, the frame can also be detachably mounted with limiting plates located on the left and right sides of the mounting surface. The inner side of the limiting plate is provided with a groove for limiting the mounting plate. The horizontal plane of the lower groove surface is lower than the horizontal plane of the mounting surface, the groove height is higher than the thickness of the straight plate, and the distance between the two grooves is slightly greater than the width of the straight plate. The horizontal plane of the upper surface of the limiting plate is higher than the horizontal plane of the upper surface of the grinding plate, so as to limit the conveyor belt between the two limiting plates. The frame is detachably mounted with mounting blocks on the front and rear sides of the mounting surface, and the mounting plates are detachably mounted on the mounting blocks.

[0008] Furthermore, in order to drive the conveyor belt to reciprocate, the conveying mechanism also includes a front pulley, a rear pulley, and a driver. The front pulley is rotatably mounted on the front side of the frame, the rear pulley is rotatably mounted on the rear side of the frame, and the driver is fixedly mounted on the rear side of the frame. The driver is connected to the rear pulley via a reducer. The conveyor belt is a toothed conveyor belt, and the front and rear pulleys are toothed pulleys. The conveyor belt is driven between the front and rear pulleys so that it can be driven to reciprocate.

[0009] Furthermore, in order to simultaneously grind the sides of the stone, both the first and second edge grinding mechanisms include a flat grinding component, an upper chamfering component, a lower chamfering component, and a fine grinding component, which are sequentially arranged on the frame along the conveyor belt conveying direction. The flat grinding assembly includes a feed seat, a feed driver, a flat grinding motor, and a flat grinding wheel. The feed seat is movably mounted on the side of the conveyor belt. The feed driver is connected to the feed seat to drive the feed seat to move left and right. The flat grinding motor is mounted on the feed seat, and the flat grinding wheel is mounted on the flat grinding motor.

[0010] Furthermore, in order to grind the upper edges of the stone, the upper chamfering assembly includes a lifting seat, a lifting drive, a movable seat, a movable drive, an upper chamfering motor, and an upper chamfering grinding wheel. The lifting seat is mounted on the frame and can move up and down. The lifting drive is connected to the lifting seat to drive the lifting seat to move up and down. The movable seat is mounted on the lifting seat at an angle of 45 degrees with the horizontal plane. The movable drive is connected to the movable seat to drive the movable seat to move along the 45-degree tilt angle. The upper chamfering motor is mounted on the movable seat at a 45-degree tilt, and the upper chamfering grinding wheel is mounted on the upper chamfering motor.

[0011] Furthermore, in order to grind the lower edges of the stone, the lower chamfering assembly includes a sliding seat, a sliding drive, a lower chamfering motor, and a lower chamfering grinding wheel. The sliding seat is inclinedly mounted on the frame, and the angle between the sliding seat and the horizontal plane is 45 degrees. The spatial angle between the sliding seat and the moving seat is 90 degrees. The sliding drive is connected to the sliding seat to drive the sliding seat to move along the 45-degree inclined angle. The lower chamfering motor is inclinedly mounted on the sliding seat at 45 degrees, and the lower chamfering grinding wheel is mounted on the lower chamfering motor.

[0012] Furthermore, in order to finely grind the sides of the stone, the fine grinding assembly includes several parallel fine grinding components. The fine grinding assembly includes a fine grinding cylinder, a fine grinding motor, and a fine grinding wheel. The fine grinding wheel is mounted on the fine grinding motor and driven to rotate by the fine grinding motor. The fine grinding motor is mounted on the fine grinding cylinder and driven to feed left and right by the fine grinding cylinder. The fine grinding cylinder is mounted on the frame.

[0013] Furthermore, in order to drive the second edge grinding mechanism to move closer to the stone and grind the stone, the second edge grinding mechanism is movably mounted on the frame, the frame is provided with a movable housing, the frame is provided with a guide rail, the movable housing is slidably mounted on the guide rail, and the frame is provided with a moving drive group for driving the movable housing to move along the guide rail.

[0014] Furthermore, in order to fix the slab for grinding, the edge grinding machine also includes a pressure roller mechanism for fixing the stone. The pressure roller mechanism includes an upper pressure roller assembly and a side pressure roller assembly. The upper pressure roller assembly is located on the upper side of the conveying mechanism to press the stone toward the conveying mechanism. The side pressure roller assembly is located on the opposite side of the edge grinding mechanism to press the stone toward the edge grinding mechanism. The side pressure roller assembly is mounted on a movable housing and includes several side pressure rollers. The side pressure rollers are rotatably mounted on the movable housing. The upper pressure roller assembly includes a lifting frame and a lifting group for driving the lifting frame to move up and down. The lifting group is mounted on the frame, and the lifting frame is mounted on the lifting group. The length direction of the lifting frame is parallel to the conveying direction of the conveyor belt, and the lifting frame is provided with a plurality of upper pressure rollers.

[0015] Compared with the prior art, the present invention has the following advantages: (1) This utility model avoids direct contact between the grinding machine frame and the conveyor belt by setting a grinding plate between the grinding machine frame and the conveyor belt. The grinding plate is a detachable structure, and can be replaced in time after the grinding plate is worn to a certain extent, so as to avoid the conveyor belt rubbing against the frame and causing wear to the frame, thereby extending the service life of the grinding machine. In addition, a limiting plate is installed on the frame to limit the installation of the grinding plate and also to limit the conveyor belt, preventing the conveyor belt from shifting during the conveying process, which would affect the grinding accuracy of the stone. (2) The present invention has a flat grinding component, an upper chamfering component and a lower chamfering component arranged sequentially on the frame to complete the edge grinding and rounding of the stone at the same time. The processing efficiency is high. The adjustable structure of the flat grinding component, the upper chamfering component and the lower chamfering component can process different specifications of slabs and has a wide range of applications. The stone is fixed in conjunction with the pressure roller mechanism, which effectively ensures the processing accuracy of the stone. In addition, a fine grinding mechanism is set after rough grinding. One machine can complete multiple processing, avoid moving the stone up and down, reduce the labor intensity of workers and greatly improve production efficiency. (3) The present invention is provided with a first edge grinding mechanism and a second edge grinding mechanism, which can simultaneously grind and process the two sides of the stone. The second edge grinding mechanism is a movable structure, so as to adjust the distance between the first edge grinding mechanism and the second edge grinding mechanism according to the width of the stone, which greatly expands the scope of application and is also very easy to operate. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a front view of the structure of this utility model; Figure 4 Schematic diagram of the first edge grinding mechanism Figure 1 ; Figure 5 Schematic diagram of the first edge grinding mechanism Figure 2 ; Figure 6 This is a schematic diagram of the grinding plate structure; Figure 7 This is a partial structural diagram of the grinding plate; Figure 8 This is a schematic diagram of the mounting block.

[0017] In the picture: Frame 1; Mounting surface 11; Limiting plate 12; Groove 121; Mounting block 13; Moving housing 14; Guide rail 15; Moving drive assembly 16; First edge grinding mechanism 2; flat grinding assembly 21; feed seat 211; feed driver 212; flat grinding motor 213; flat grinding wheel 214; upper chamfering assembly 22; lifting seat 221; lifting drive 222; moving seat 223; moving drive 224; upper chamfering motor 225; upper chamfering grinding wheel 226; lower chamfering assembly 23; sliding seat 231; sliding drive 232; lower chamfering motor 233; lower chamfering grinding wheel 234; fine grinding mechanism 24; fine grinding cylinder 241; fine grinding motor 242; fine grinding wheel 243; Conveying mechanism 3; Conveyor belt 31; Conveying section 311; Front pulley 32; Rear pulley 33; Grinding plate 4; Straight plate 41; Slanted plate 42; Mounting plate 43; Pressure roller mechanism 5; upper pressure roller assembly 51; lifting frame 511; lifting group 512; upper pressure roller 513; side pressure roller 52; Second edge grinding mechanism 6; 7. Board material. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments: Example: Figure 1-8 As shown, this embodiment provides a double-sided edge grinding machine, including a frame 1. The frame 1 is symmetrically provided with a first edge grinding mechanism 2 and a second edge grinding mechanism 6 to simultaneously grind both sides of the stone. The frame 1 is also provided with a conveying mechanism 3 located between the first edge grinding mechanism 2 and the second edge grinding mechanism 6. The conveying mechanism 3 includes a conveyor belt 31, which is reciprocally mounted on the frame 1. A conveying section 311 is formed on the conveyor belt 31 located above the frame 1. The frame 1 is provided with a grinding plate 4 located below the conveying section 311 for frictional contact with the conveyor belt 31. The grinding plate 4 is detachably mounted on the frame 1 so that the grinding plate 4 can be replaced in time after wear.

[0019] In this embodiment, when the conveyor belt 31 is conveying the stone, it also needs to provide support to the stone so that the edge grinding machine can grind and chamfer the stone. In order to ensure that the conveyor belt 31 can support the stone when conveying it, and at the same time, to prevent friction between the conveyor belt 31 and the frame 1, the grinding plate 4 includes a straight plate 41 for frictional contact with the conveyor section 311 of the conveyor belt 31, inclined plates 42 located on the front and rear sides of the straight plate 41, and a mounting plate 43 located on the outside of the inclined plate 42. The upper side of the frame 1 is provided with a mounting surface 11 for mounting the straight plate 41. The straight plate 41 is located on the mounting surface 11. The inclined plate 42 extends downward from the straight plate 41 to guide the conveyor belt 31 to slide onto the straight plate 41. The mounting plate 43 extends downward from the inclined plate 42 to connect with the frame 1 so that the grinding plate 4 can be detachably mounted on the frame 1.

[0020] In this embodiment, in order to constrain the conveyor belt 31 to accurately transport the stone and prevent the stone from shifting and affecting the edge grinding accuracy, the frame 1 can also be detachably installed with limiting plates 12 located on the left and right sides of the mounting surface 11. The inner side of the limiting plate 12 is provided with a groove 121 for limiting the mounting plate 41. The horizontal plane of the lower groove surface of the groove 121 is lower than the horizontal plane of the mounting surface 11, the groove height of the groove 121 is higher than the thickness of the straight plate 41, the distance between the two grooves 121 is slightly greater than the width of the straight plate 41, and the horizontal plane of the upper end surface of the limiting plate 12 is higher than the horizontal plane of the upper end surface of the grinding plate 4, so as to limit the conveyor belt 31 between the two limiting plates 12. The frame 1 is detachably installed with mounting blocks 13 on the front and rear sides of the mounting surface 11, and the mounting plate 43 is detachably installed on the mounting blocks 13.

[0021] In this embodiment, in order to drive the conveyor belt 31 to reciprocate, the conveying mechanism 3 further includes a front pulley 32, a rear pulley 33, and a driver. The front pulley 32 is rotatably mounted on the front side of the frame 1, the rear pulley 33 is rotatably mounted on the rear side of the frame 1, and the driver is fixedly mounted on the rear side of the frame 1. The driver is connected to the rear pulley 33 via a reducer. The conveyor belt 31 is a toothed conveyor belt 31, and the front pulley 32 and the rear pulley 33 are toothed pulleys. The toothed meshing structure prevents the conveyor belt 31 from slipping. The conveyor belt 31 is driven between the front pulley 32 and the rear pulley 33 so that it can be driven to reciprocate by the front pulley 32 and the rear pulley 33. The front pulley 32 is mounted on the frame 1 and can move back and forth. Two guide plates are symmetrically arranged on both sides of the frame 1. The guide plates are provided with guide grooves that extend back and forth. An installation shaft is movably arranged between the two guide grooves. The front pulley 32 is rotatably mounted on the installation shaft through bearings. Square blocks are provided at both ends of the installation shaft and are slidably installed in the guide grooves. The height of the square blocks is adapted to the groove height of the guide grooves to limit the installation shaft between the two guide plates. A drive screw is threadedly installed on the guide block. The drive screw is threadedly connected to the square block to drive the square block to slide back and forth in the guide groove.

[0022] In this embodiment, in order to grind the side of the stone at the same time, the first edge grinding mechanism 2 and the second edge grinding mechanism 6 both include a flat grinding component 21, an upper chamfering component 22, a lower chamfering component 23 and a fine grinding component. The flat grinding component 21, the upper chamfering component 22, the lower chamfering component 23 and the fine grinding component are arranged sequentially on the frame 1 along the conveying direction of the conveyor belt 31. The surface grinding assembly 21 includes a feed seat 211, a feed driver 212, a surface grinding motor 213, and a surface grinding wheel 214. The feed seat 211 is movably mounted on the side of the conveyor belt 31. The feed driver 212 is connected to the feed seat 211 to drive the feed seat 211 to move left and right. The surface grinding motor 213 is mounted on the feed seat 211, and the surface grinding wheel 214 is mounted on the surface grinding motor 213. The frame 1 is provided with a dovetail-shaped guide rail, and the feed seat 211 is provided with a dovetail groove that mates with the dovetail-shaped guide rail. The feed driver 212 consists of a lead screw and a lead screw nut seat. The frame 1 is provided with a sliding groove located inside the dovetail-shaped guide rail. The lead screw nut seat is slidably installed in the sliding groove. The lead screw is rotatably installed in the dovetail-shaped guide rail. The lead screw nut seat is threadedly connected to the lead screw. The lead screw nut seat is fixedly connected to the feed seat 211 to drive the feed seat 211 to move left and right along the dovetail-shaped guide rail, thereby driving the grinding wheel to feed left and right.

[0023] In this embodiment, in order to grind the upper corners of the stone, the upper chamfering assembly 22 includes a lifting seat 221, a lifting drive component 222, a moving seat 223, a moving drive component 224, an upper chamfering motor 225, and an upper chamfering grinding wheel 226. The lifting seat 221 is mounted on the frame 1 and can move up and down. The lifting drive component 222 is connected to the lifting seat 221 to drive the lifting seat 221 to move up and down. The moving seat 223 is mounted obliquely on the lifting seat 221, and the moving seat 223 forms an angle of 45 degrees with the horizontal plane. The moving drive component 224 is connected to the moving seat 223 to drive the moving seat 223 to move along the 45-degree oblique angle. The upper chamfering motor 225 is mounted obliquely on the moving seat 223 at 45 degrees, and the upper chamfering grinding wheel 226 is mounted on the upper chamfering motor 225. The frame 1 is provided with a lifting groove. The lifting drive component 222 includes a lead screw nut seat, a lifting lead screw, a lifting gear, a drive gear, and a drive handwheel. The lifting lead screw is rotatably mounted on the frame 1. The lead screw nut seat is connected to the lifting lead screw and is slidably mounted in the lifting groove so as to drive the lead screw nut seat to move up and down along the lifting groove through the lifting lead screw. The lifting seat 221 is fixedly connected to the lead screw nut seat. The lifting gear is coaxially fixedly mounted on the lifting lead screw. The drive gear is rotatably mounted on the frame 1 and meshes with the lifting gear to drive the lifting gear to rotate. The drive handwheel is coaxially fixedly connected to the drive gear. The lifting seat 221 is provided with a 45-degree inclined dovetail-shaped guide rail, and a sliding groove is provided in the dovetail-shaped guide rail. The moving drive component 224 includes a lead screw and a lead screw nut seat. The lead screw nut seat is slidably installed in the sliding groove, and the lead screw is rotatably installed in the dovetail-shaped guide rail. The lead screw nut seat is threadedly connected to the lead screw. The moving seat 223 is provided with a dovetail groove that cooperates with the dovetail-shaped guide rail. The lead screw nut seat is fixedly connected to the moving seat 223 to drive the moving seat 223 to move along the dovetail-shaped guide rail.

[0024] In this embodiment, in order to grind the lower corners of the stone, the lower chamfering assembly 23 includes a sliding seat 231, a sliding drive 232, a lower chamfering motor 233, and a lower chamfering grinding wheel 234. The sliding seat 231 is inclinedly mounted on the frame 1, and the angle formed between the sliding seat 231 and the horizontal plane is 45 degrees. The spatial angle formed between the sliding seat 231 and the moving seat 223 is 90 degrees. The sliding drive 232 is connected to the sliding seat 231 to drive the sliding seat 231 to move along the 45-degree inclined angle. The lower chamfering motor 233 is inclinedly mounted on the sliding seat 231 at 45 degrees. The lower chamfering grinding wheel 234 is mounted on the lower chamfering motor 233. The sliding drive 232 and the moving drive 224 have the same structure.

[0025] In this embodiment, in order to finely grind the side of the stone, the fine grinding assembly includes several parallel fine grinding components. The fine grinding assembly includes a fine grinding cylinder 241, a fine grinding motor 242, and a fine grinding wheel 243. The fine grinding wheel 243 is mounted on the fine grinding motor 242 and driven to rotate by the fine grinding motor 242. The fine grinding motor 242 is mounted on the fine grinding cylinder 241 and driven to feed left and right by the fine grinding cylinder 241. The fine grinding cylinder 241 is mounted on the frame 1.

[0026] In this embodiment, in order to drive the second edge grinding mechanism 6 to move closer to the stone and grind the stone; the second edge grinding mechanism 6 is movably mounted on the frame 1, the frame 1 is slidably provided with a movable box 14, the frame 1 is provided with a guide rail 15, the movable box 14 is slidably mounted on the guide rail 15, and the frame 1 is provided with a moving drive group 16 for driving the movable box 14 to move along the guide rail 15.

[0027] In this embodiment, in order to fix the slab for grinding, the edge grinding machine also includes a pressure roller mechanism for fixing the stone. The pressure roller mechanism includes an upper pressure roller assembly 51 and a side pressure roller assembly. The upper pressure roller assembly 51 is located on the upper side of the conveying mechanism 3 to press the stone toward the conveying mechanism 3. The side pressure roller assembly is located on the opposite side of the edge grinding mechanism to press the stone toward the edge grinding mechanism. The side pressure roller assembly is mounted on the movable housing 14. The side pressure roller assembly includes a plurality of side pressure rollers 52, and the side pressure rollers 52 are rotatably mounted on the movable housing 14. The upper pressure roller assembly 51 includes a lifting frame 511 and a lifting group 512 for driving the lifting frame 511 to move up and down. The lifting group 512 is mounted on the frame 1, and the lifting frame 511 is mounted on the lifting group 512. The length direction of the lifting frame 511 is parallel to the conveying direction of the conveyor belt 31. The lifting frame 511 is provided with a plurality of upper pressure rollers 513. The lifting assembly 512 is a screw-driven structure. There are several lifting assemblies 512, and each lifting assembly 512 is fixedly connected to the lifting frame 511. The machine tool is provided with several guide seats, and the guide seats are provided with guide grooves extending to the left and right. Each lifting assembly 512 can be detachably installed in the guide groove. The lifting assembly 512 includes a motor, a lifting screw, and a lifting nut. The motor is fixedly installed on the guide seat. The lifting screw is connected to the motor via a reducer. The lifting nut is fixedly connected to the lifting frame 511, and the lifting nut is threaded onto the lifting screw so that the rotation of the lifting screw drives the lifting nut to move up and down, thereby driving the lifting frame 511 to move up and down. The guide seat is provided with a guide sleeve, and the lifting nut is movably disposed in the guide sleeve.

[0028] This invention avoids direct contact between the grinding machine frame 1 and the conveyor belt 31 by setting a grinding plate 4 between them. The grinding plate 4 is detachable and can be replaced in time after it is worn to a certain extent, thus preventing the conveyor belt 31 from rubbing against the frame 1 and causing wear, thereby extending the service life of the grinding machine. In addition, a limiting plate 12 is installed on the frame 1 to limit the installation of the grinding plate 4 and also to limit the conveyor belt 31, preventing the conveyor belt 31 from shifting during the conveying process and affecting the grinding accuracy of the stone.

[0029] This invention features a flat grinding component 21, an upper chamfering component 22, and a lower chamfering component 23 sequentially arranged on a frame 1 to simultaneously complete the edge grinding and rounding of stone, resulting in high processing efficiency. The adjustable structure of the flat grinding component 21, upper chamfering component 22, and lower chamfering component 23 allows for the processing of slabs of different specifications, making it widely applicable. In conjunction with the pressure roller mechanism, the stone is fixed, effectively ensuring the processing accuracy of the stone. Furthermore, a fine grinding mechanism 24 is provided after rough grinding, allowing one machine to complete multiple processing tasks, avoiding the need to move the stone up and down, reducing the labor intensity of workers, and greatly improving production efficiency.

[0030] This utility model is equipped with a first edge grinding mechanism 2 and a second edge grinding mechanism 6, which can simultaneously grind both sides of the stone. The second edge grinding mechanism 6 is a movable mechanism, so that the distance between the first edge grinding mechanism 2 and the second edge grinding mechanism 6 can be adjusted according to the width of the stone, which greatly expands the scope of application and is also very easy to operate.

[0031] The above description is merely an embodiment of this utility model and does not limit the scope of patent protection of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this utility model.

Claims

1. A double-sided edge grinding machine, characterized in that: The device includes a frame on which a first edge grinding mechanism and a second edge grinding mechanism are symmetrically arranged to simultaneously grind both sides of the stone. The frame also includes a conveying mechanism located between the first and second edge grinding mechanisms. The conveying mechanism includes a conveyor belt that is reciprocally mounted on the frame. A conveying section is formed on the conveyor belt above the frame. The frame is provided with a grinding plate located below the conveying section for frictional contact with the conveyor belt. The grinding plate is detachably mounted on the frame so that it can be replaced promptly after wear.

2. The double-sided edge grinding machine according to claim 1, characterized in that: The grinding plate includes a straight plate for frictional contact with the conveyor belt, inclined plates located on the front and rear sides of the straight plate, and a mounting plate located on the outer side of the inclined plates. The upper side of the frame is provided with a mounting surface for mounting the straight plate. The straight plate is located on the mounting surface. The inclined plates extend downward from the straight plate to guide the conveyor belt to slide onto the straight plate. The mounting plate extends downward from the inclined plates to connect with the frame so that the grinding plate can be detachably mounted on the frame.

3. The double-sided edge grinding machine according to claim 2, characterized in that: The frame can also be detachably mounted with limiting plates located on the left and right sides of the mounting surface. The inner side of the limiting plate is provided with a groove for limiting the mounting plate. The horizontal plane of the groove is lower than the horizontal plane of the mounting surface. The groove height is higher than the thickness of the straight plate. The distance between the two grooves is slightly greater than the width of the straight plate. The horizontal plane of the upper surface of the limiting plate is higher than the horizontal plane of the upper surface of the grinding plate, so as to limit the conveyor belt between the two limiting plates. The frame is detachably mounted with mounting blocks on the front and rear sides of the mounting surface. The mounting plate can be detachably mounted on the mounting blocks.

4. The double-sided edge grinding machine according to claim 1, characterized in that: The conveying mechanism further includes a front pulley, a rear pulley, and a driver. The front pulley is rotatably mounted on the front side of the frame, the rear pulley is rotatably mounted on the rear side of the frame, and the driver is fixedly mounted on the rear side of the frame. The driver is connected to the rear pulley via a reducer. The conveyor belt is a toothed conveyor belt, and the front and rear pulleys are toothed pulleys. The conveyor belt is connected between the front and rear pulleys so that it can be driven by the front and rear pulleys to reciprocate in a cyclic motion.

5. The double-sided edge grinding machine according to claim 1, characterized in that: Both the first and second edge grinding mechanisms include a flat grinding component, an upper chamfering component, a lower chamfering component, and a fine grinding component. The flat grinding component, the upper chamfering component, the lower chamfering component, and the fine grinding component are sequentially arranged on the frame along the conveyor belt conveying direction. The flat grinding assembly includes a feed seat, a feed driver, a flat grinding motor, and a flat grinding wheel. The feed seat is movably mounted on the side of the conveyor belt. The feed driver is connected to the feed seat to drive the feed seat to move left and right. The flat grinding motor is mounted on the feed seat, and the flat grinding wheel is mounted on the flat grinding motor.

6. The double-sided edge grinding machine according to claim 5, characterized in that: The upper chamfering assembly includes a lifting seat, a lifting drive, a movable seat, a movable drive, an upper chamfering motor, and an upper chamfering grinding wheel. The lifting seat is movably mounted on the frame. The lifting drive is connected to the lifting seat to drive the lifting seat to move up and down. The movable seat is mounted at an angle on the lifting seat, and the movable seat forms an angle of 45 degrees with the horizontal plane. The movable drive is connected to the movable seat to drive the movable seat to move along the 45-degree tilt angle. The upper chamfering motor is mounted at a 45-degree angle on the movable seat, and the upper chamfering grinding wheel is mounted on the upper chamfering motor.

7. The double-sided edge grinding machine according to claim 5, characterized in that: The lower chamfering assembly includes a sliding seat, a sliding drive, a lower chamfering motor, and a lower chamfering grinding wheel. The sliding seat is inclinedly mounted on the frame, and the angle between the sliding seat and the horizontal plane is 45 degrees. The spatial angle between the sliding seat and the moving seat is 90 degrees. The sliding drive is connected to the sliding seat to drive the sliding seat to move along the 45-degree inclined angle. The lower chamfering motor is inclinedly mounted on the sliding seat at 45 degrees, and the lower chamfering grinding wheel is mounted on the lower chamfering motor.

8. The double-sided edge grinding machine according to claim 5, characterized in that: The fine grinding assembly includes several parallel fine grinding components. Each fine grinding assembly includes a fine grinding cylinder, a fine grinding motor, and a fine grinding wheel. The fine grinding wheel is mounted on the fine grinding motor and driven to rotate by the fine grinding motor. The fine grinding motor is mounted on the fine grinding cylinder and driven to feed left and right by the fine grinding cylinder. The fine grinding cylinder is mounted on the machine frame.

9. The double-sided edge grinding machine according to claim 1, characterized in that: The second edge grinding mechanism is movably mounted on a frame, on which a movable housing is slidably provided. The frame is provided with a guide rail, and the movable housing is slidably mounted on the guide rail. The frame is provided with a moving drive group for driving the movable housing to move along the guide rail.

10. The double-sided edge grinding machine according to claim 9, characterized in that: The edging machine also includes a pressure roller mechanism for fixing the stone. The pressure roller mechanism includes an upper pressure roller assembly and a side pressure roller assembly. The upper pressure roller assembly is located on the upper side of the conveying mechanism to press the stone toward the conveying mechanism. The side pressure roller assembly is located on the opposite side of the edging mechanism to press the stone toward the edging mechanism. The side pressure roller assembly is mounted on a movable housing and includes a plurality of side pressure rollers. The side pressure rollers are rotatably mounted on the movable housing. The upper pressure roller assembly includes a lifting frame and a lifting group for driving the lifting frame to move up and down. The lifting group is mounted on the frame, and the lifting frame is mounted on the lifting group. The length direction of the lifting frame is parallel to the conveying direction of the conveyor belt, and the lifting frame is provided with a plurality of upper pressure rollers.

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