Stone clamping device

Abstract

The utility model relates to the technical field of machining equipment, in particular to a stone clamping device which comprises a motor, a first flange plate, a lead screw, a nut, a sleeve, a first connecting rod, a mounting block, a second connecting rod and a third connecting rod. The sleeve is installed on the bottom face of the first flange plate, a vertical guide groove is formed in the side face of the sleeve, one end of the first connecting rod is connected with the nut, and the other end of the first connecting rod penetrates through the guide groove in the side face of the sleeve and then is hinged to the upper end of the third connecting rod. The connecting rods I, the mounting blocks, the connecting rods II and the connecting rods III are arranged in at least three groups, and the connecting rods I are uniformly and circumferentially distributed around the sleeve and coincide with the radius of the sleeve. According to the device, vertical cylindrical stone can be clamped, sliding of the stone can be monitored, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining equipment, in particular to a stone clamping device. Background Art

[0002] Stone is one of the important raw materials for architectural decoration. Stone has higher thermal stability than metal and is also used in the manufacture of mechanical equipment and tools. Most of the shapes of stone blanks are plate-shaped or block-shaped, and many are cylindrical. The existing stone clamping devices mainly target plate-shaped or block-shaped stones, and there is a risk of falling off when clamping cylindrical stones.

[0003] For this reason, the invention patent with the authorization announcement number CN 115008328 B in the prior art provides a cylindrical stone polishing device, including a clamping mechanism, a polishing mechanism and a monitoring mechanism. The clamping mechanism includes two load-bearing bases fixedly arranged on the ground. A horizontally arranged first through hole is opened in one of the load-bearing bases, and a rotating base is rotatably connected in the first through hole. A horizontally arranged second through hole is opened in the other load-bearing base, and a jacking base is movably arranged in the second through hole. One ends of the rotating base and the jacking base close to each other are respectively fixedly connected with a first clamp and rotatably connected with a second clamp. The first clamp and the second clamp are arranged on the same straight line. The monitoring mechanism is arranged below the axes of the first clamp and the second clamp. By setting the monitoring mechanism, the present invention can monitor in real time whether the two ends of the stone are displaced and tilted with respect to the clamps during the long-term high-speed rotation movement of the stone during the polishing work, ensuring the safety of the stone polishing work and improving the quality of stone polishing.

[0004] In the process of implementing the present invention, the inventor found that there are at least the following problems in the prior art: 1. The patented technology can only clamp the two end faces of the cylindrical part. In practical applications, most stones are placed vertically. It is more efficient to clamp and transfer the side of the stone. When processing the end face of the stone, the stone also needs to be erected; 2. If the clamping device can detect the sliding of the stone, it can give an early warning to avoid danger. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention develops a stone clamping device, which can clamp vertical stones and can monitor the sliding of the stones, improving safety.

[0006] The technical solution for the present utility model to solve the technical problem is as follows: An embodiment of the present utility model provides a stone clamping device for clamping a vertically placed cylindrical workpiece. The stone clamping device includes a motor, a first flange plate, a lead screw, a nut, a sleeve, a first connecting rod, a mounting block, a second connecting rod, and a third connecting rod. The motor is installed upside down on the top of the first flange plate. The output shaft of the motor passes through the first flange plate and then connects to the lead screw. The nut is installed on the lead screw. The sleeve is installed on the bottom surface of the first flange plate. A vertical guide groove is provided on the side surface of the sleeve. One end of the first connecting rod is connected to the nut, and the other end passes through the guide groove on the side surface of the sleeve and is hinged to the upper end of the third connecting rod. The mounting block is arranged outside the bottom of the sleeve. Both ends of the second connecting rod are respectively hinged to the end of the mounting block and the middle part of the third connecting rod. At least three groups of the first connecting rod, the mounting block, the second connecting rod, and the third connecting rod are provided. Each first connecting rod is evenly distributed around the sleeve in a circumferential manner, and the first connecting rod coincides with the radius of the sleeve.

[0007] As an optimization, a cushion block is further provided on the inner side of the lower end of the third connecting rod.

[0008] As an optimization, a second flange plate is further provided above the first flange plate. The first flange plate and the second flange plate are connected by a connecting rod. The motor is arranged in the gap between the first flange plate and the second flange plate.

[0009] As an optimization, the stone clamping device further includes a friction wheel, a rotating shaft, a shaft sleeve, an elastic member, a magnet, and a Hall sensor. A vertical groove is provided in the middle of the lower end of the third connecting rod. A notch corresponding to the vertical groove is provided on the cushion block. The friction wheel is arranged in the vertical groove, and the friction wheel penetrates through the cushion block. The friction wheel is installed on the rotating shaft. The shaft sleeve is circular. Both ends of the rotating shaft are installed in the shaft sleeve. Rectangular grooves are provided on both sides of the lower end of the third connecting rod. The shaft sleeve is arranged in the rectangular grooves. An elastic member is provided on the side of the shaft sleeve away from the cushion block. A plurality of magnets are evenly distributed in a circumferential manner on the end face of the friction wheel. The Hall sensor is arranged on the inner side of the vertical groove of the third connecting rod, and the magnets and the Hall sensor are arranged correspondingly.

[0010] As an optimization, a guide rod perpendicular to the shaft sleeve is further provided on the outer side of the shaft sleeve. A guide hole corresponding to the guide rod is provided on the side surface of the rectangular groove of the third connecting rod, and the guide rod is installed in the guide hole.

[0011] As an optimization, the elastic member is a spring, and the spring is installed on the guide rod.

[0012] As an optimization, the cross-section of the guide rod is square.

[0013] The effects provided in the utility model content are only the effects of the embodiments, rather than all the effects of the utility model. The above technical solutions have the following advantages or beneficial effects:

[0014] 1. The guiding groove on the side of the sleeve can restrict the rotation of Link 1 and the nut. The motor drives the lead screw to rotate, thereby driving the nut to move up and down along the lead screw. Link 3 moves up and down under the drive of the nut. Under the action of Link 2, when Link 3 rises, the lower end opens, and when it descends, the lower end clamps. Since the radius of Link 1 coincides with that of the sleeve, the lower end of Link 3 always moves along the radius of the cylindrical stone workpiece, and the clamping force on the stone is always perpendicular to the side of the stone, which can more effectively clamp the vertical cylindrical stone.

[0015] 2. The cushion block is an elastic rubber pad. By setting the cushion block, the contact area with the stone can be increased, making the clamping more stable. By setting Flange Plate 2, the stone clamping device can be installed on a robotic arm, a handling manipulator, or a crane, facilitating the handling of the stone after clamping.

[0016] 3. After the cushion block completes the clamping of the stone, the friction wheel is pressed below the cushion block, and the friction wheel fits against the side of the stone. When the stone slides relative to the clamping device, it will drive the friction wheel to rotate, and then drive the magnet to move relative to the Hall sensor. The signal emitted by the Hall sensor changes, and it can be known that the stone is sliding. The robotic arm, handling manipulator, or crane on which the stone clamping device is installed can be controlled to descend to the ground and an alarm can be issued to avoid falling accidents, improving safety. By setting the square guiding rod and guiding hole, the degree of freedom of the bushing can be restricted, enabling it to only move up and down along the guiding hole, thus ensuring the stability of the friction wheel during operation. Description of the Drawings

[0017] Figure 1 、 Figure 2 、 Figure 4 is a perspective view of an embodiment of the present utility model.

[0018] Figure 3 is Figure 2 a partial enlarged view of area A in

[0019] Figure 5 is a front view of an embodiment of the present utility model.

[0020] Figure 6 is Figure 5 a cross-sectional view taken along the B-B direction.

[0021] Figure 7 is Figure 5 a partial enlarged view of area C in

[0022] Figure 8 is Figure 4 a partial enlarged view of area D in

[0023] Figure 9 is a perspective view of the friction wheel in an embodiment of the present utility model.

[0024] Wherein: flange plate two 1, motor 2, flange plate one 3, lead screw 4, nut 5, sleeve 6, connecting rod one 7, mounting block 8, connecting rod two 9, connecting rod three 10, cushion block 11, friction wheel 12, rotating shaft 13, shaft sleeve 14, elastic member 15, magnet 16, Hall sensor 17, vertical groove 101, rectangular groove 102, guide rod 151, guide hole 103. Specific embodiments

[0025] In order to clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with its drawings.

[0026] Figures 1 to 9 As an embodiment of the present utility model, as Figure 1 shown, a stone clamping device for clamping a vertically placed cylindrical workpiece, the stone clamping device includes a motor 2, a flange plate one 3, a lead screw 4, a nut 5, a sleeve 6, a connecting rod one 7, a mounting block 8, a connecting rod two 9, and a connecting rod three 10. The motor 2 is installed upside down on the top of the flange plate one 3. The output shaft of the motor 2 passes through the flange plate one 3 and then connects to the lead screw 4. The nut 5 is installed on the lead screw 4. The sleeve 6 is installed on the bottom surface of the flange plate one 3. A vertical guide groove is provided on the side surface of the sleeve 6. One end of the connecting rod one 7 is connected to the nut 5, and the other end passes through the guide groove on the side surface of the sleeve 6 and is hinged to the upper end of the connecting rod three 10. The mounting block 8 is arranged outside the bottom of the sleeve 6. Both ends of the connecting rod two 9 are respectively hinged to the end of the mounting block 8 and the middle of the connecting rod three 10. Three groups of the connecting rod one 7, the mounting block 8, the connecting rod two 9, and the connecting rod three 10 are provided, and each connecting rod one 7 is evenly distributed in a circumferential manner around the sleeve 6, and the radius of the connecting rod one 7 coincides with that of the sleeve 6. A flange plate two 1 is further provided above the flange plate one 3. The flange plate one 3 and the flange plate two 1 are connected by a connecting rod. The motor 2 is arranged in the gap between the flange plate one 3 and the flange plate two 1. By providing the flange plate two 1, the stone clamping device can be installed on a robotic arm, a handling manipulator, or a crane, facilitating the handling of the clamped stone.

[0027] As Figure 3 shown, a cushion block 11 is further provided inside the lower end of the connecting rod three 10. The cushion block 11 is an elastic rubber pad. By providing the cushion block 11, the contact area with the stone can be increased, making the clamping more stable.

[0028] As Figure 6As shown, the stone clamping device further includes a friction wheel 12, a rotating shaft 13, a bushing 14, an elastic member 15, a magnet 16, and a Hall sensor 17. A vertical groove 101 is provided in the middle of the lower end of the third connecting rod 10. A notch corresponding to the vertical groove 101 is provided on the cushion block 11. The friction wheel 12 is arranged in the vertical groove 101. The friction wheel 12 penetrates through the cushion block 11. The friction wheel 12 is mounted on the rotating shaft 13. The bushing 14 is annular. Both ends of the rotating shaft 13 are mounted in the bushing 14. Rectangular grooves 102 are provided on both sides of the lower end of the third connecting rod 10. The bushing 14 is arranged in the rectangular grooves 102. An elastic member 15 is provided on the side of the bushing 14 away from the cushion block 11. As Figure 7 shown, the cross-section of the guide rod 151 is square. By providing the square guide rod 151 and the guide hole 103, the degree of freedom of the bushing 14 can be restricted, so that it can only move up and down along the guide hole 103, thereby ensuring the stability of the friction wheel 12 during operation. As Figure 9 shown, a plurality of magnets 16 are evenly distributed in a circumferential manner on the end face of the friction wheel 12. The Hall sensor 17 is arranged inside the vertical groove 101 of the third connecting rod 10, and the magnet 16 is arranged corresponding to the Hall sensor 17. A guide rod 151 perpendicular to the bushing 14 is further provided on the outer side of the bushing 14. A guide hole 103 corresponding to the guide rod 151 is provided on the side surface of the rectangular groove 102 of the third connecting rod 10, and the guide rod 151 is mounted in the guide hole 103. The elastic member 15 is a spring, and the spring is mounted on the guide rod 151.

[0029] The guide grooves on the side of the sleeve 6 can restrict the rotation of the first connecting rod 7 and the nut 5. The motor 2 drives the lead screw 4 to rotate, thereby driving the nut 5 to move up and down along the lead screw 4. The third connecting rod 10 moves up and down under the drive of the nut 5. Under the action of the second connecting rod 9, the lower end of the third connecting rod 10 opens when rising and clamps when descending. Since the radius of the first connecting rod 7 coincides with that of the sleeve 6, the lower end of the third connecting rod 10 always moves along the radius of the cylindrical stone workpiece, and the clamping force on the stone is always perpendicular to the side surface of the stone, which can more effectively clamp the vertical cylindrical stone.

[0030] After the cushion block 11 completes the clamping of the stone, the friction wheel 12 is pressed below the cushion block 11, and the friction wheel 12 is attached to the side surface of the stone. When the stone slides relative to the clamping device, it will drive the friction wheel 12 to rotate, and then drive the magnet 16 to move relative to the Hall sensor 17. The signal emitted by the Hall sensor 17 changes, and the sliding of the stone can be known. The robotic arm, handling manipulator or crane on which the stone clamping device is installed can be controlled to descend to the ground and an alarm can be issued to avoid falling accidents and improve safety.

[0031] Although the specific implementation manners of the utility model have been described with reference to the accompanying drawings above, they are not limitations on the protection scope of the utility model. Based on the technical solutions of the utility model, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the utility model.

Claims

1. A stone clamping device for clamping a vertically placed cylindrical workpiece, characterized in that: The stone clamping device includes a motor (2), a first flange plate (3), a lead screw (4), a nut (5), a sleeve (6), a first connecting rod (7), a mounting block (8), a second connecting rod (9), and a third connecting rod (10). The motor (2) is installed upside down on the top of the first flange plate (3). The output shaft of the motor (2) passes through the first flange plate (3) and is connected to the lead screw (4). The nut (5) is installed on the lead screw (4). The sleeve (6) is installed on the bottom surface of the first flange plate (3). A vertical guide groove is provided on the side surface of the sleeve (6). One end of the first connecting rod (7) is connected to the nut (5), and the other end passes through the guide groove on the side surface of the sleeve (6) and is hinged to the upper end of the third connecting rod (10). The mounting block (8) is arranged outside the bottom of the sleeve (6). Both ends of the second connecting rod (9) are respectively hinged to the end of the mounting block (8) and the middle of the third connecting rod (10). At least three groups of the first connecting rod (7), the mounting block (8), the second connecting rod (9), and the third connecting rod (10) are provided. Each first connecting rod (7) is evenly distributed in a circumferential direction around the sleeve (6), and the radius of the first connecting rod (7) coincides with that of the sleeve (6).

2. The stone clamping device according to claim 1, characterized in that A cushion block (11) is further provided on the inner side of the lower end of the third connecting rod (10).

3. The stone clamping device according to claim 1, characterized in that, A second flange plate (1) is further provided above the first flange plate (3). The first flange plate (3) and the second flange plate (1) are connected by a connecting rod. The motor (2) is arranged in the gap between the first flange plate (3) and the second flange plate (1).

4. The stone clamping device according to claim 2, characterized in that The stone clamping device further includes a friction wheel (12), a rotating shaft (13), a shaft sleeve (14), an elastic member (15), a magnet (16), and a Hall sensor (17). A vertical groove (101) is provided in the middle of the lower end of the third connecting rod (10). A notch corresponding to the vertical groove (101) is provided on the cushion block (11). The friction wheel (12) is arranged in the vertical groove (101). The friction wheel (12) penetrates through the cushion block (11). The friction wheel (12) is installed on the rotating shaft (13). The shaft sleeve (14) is annular. Both ends of the rotating shaft (13) are installed in the shaft sleeve (14). Rectangular grooves (102) are provided on both sides of the lower end of the third connecting rod (10). The shaft sleeve (14) is arranged in the rectangular grooves (102). An elastic member (15) is provided on the side of the shaft sleeve (14) away from the cushion block (11). A plurality of magnets (16) are evenly distributed in a circumferential direction on the end face of the friction wheel (12). The Hall sensor (17) is arranged inside the vertical groove (101) of the third connecting rod (10). The magnets (16) and the Hall sensor (17) are arranged correspondingly.

5. The stone clamping device according to claim 4, characterized in that A guide rod (151) perpendicular to the shaft sleeve (14) is further provided on the outer side of the shaft sleeve (14). A guide hole (103) corresponding to the guide rod (151) is provided on the side surface of the rectangular groove (102) of the third connecting rod (10). The guide rod (151) is installed in the guide hole (103).

6. The stone clamping device according to claim 5, characterized in that, The elastic member (15) is a spring. The spring is installed on the guide rod (151).

7. The stone clamping device according to claim 5, characterized in that, The cross-section of the guide rod (151) is square.

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