A film removing device for low-emissivity glass production

Abstract

The utility model discloses a film removal device for low -radiation glass production belongs to glass production instrument field, including first conveyer and second conveyer, the rear side of first conveyer and second conveyer is provided with support, is provided with mounting panel on the support, is provided with grabbing mechanism and grabbing drive mechanism on the mounting panel, is provided with rotary workstation between first conveyer and second conveyer, the front side of rotary workstation is provided with front -back moving mechanism, left -right moving mechanism, up -down moving mechanism and be used for driving the grinding wheel drive mechanism of grinding wheel work, the outside of grinding wheel is provided with dust collecting hood, and dust collecting hood is connected with filtering mechanism, fan through pipeline. The utility model discloses through grabbing mechanism and goes up and down material, and loading is more quick, convenient, through front -back moving mechanism, left -right moving mechanism, up -down moving mechanism cooperation, the position of grinding wheel can be adjusted conveniently, can carry out film removal work quickly, use more convenient, has reduced the labor intensity of staff.

Description

Technical Field

[0001] This utility model relates to the field of glass production equipment, and in particular to a film removal device for low-emissivity glass production. Background Technology

[0002] In the production of low-emissivity (Low-E) glass, an extremely fine film of metal or metal oxide needs to be deposited on the glass surface. This film is crucial for the glass's energy-saving and heat-insulating functions. However, when manufacturing insulated or laminated glass, the edges of the glass require sealing and bonding. If this Low-E film is present in the edge bonding area, it will severely affect the adhesive strength of the sealant, leading to seal failure and a shortened product lifespan. Therefore, a film removal device must be used to precisely, uniformly, and without damage remove this film from the predetermined width of the glass's edges.

[0003] In actual production, it is usually removed manually, which is inconvenient to operate and requires a lot of labor intensity for workers. For example, patent application number 202021003724.9 discloses a film removal device for low-emissivity glass production. First, the low-emissivity glass is placed on a worktable and aligned with the first and second limiting rods. According to the glass's dimensions, a pressure rod is moved along a first sliding groove. When the pressure rod reaches the glass edge, it is rotated and connected to a fixing block. A torsion spring provides an upward force, pressing the pressure rod against the fixing block for fixation. Depending on the glass thickness, an adjusting bolt is rotated, causing the adjusting block to move downwards. This movement drives the motor and water spray pipe downwards, which in turn moves the grinding roller downwards. When the grinding roller reaches the point where it is aligned with and presses the glass, the motor is started, rotating the grinding roller. Water is then sprayed onto the grinding roller to reduce dust. The support block is then moved back and forth, causing the grinding roller to move and remove dust from the glass. This device is inconvenient to operate and requires significant labor intensity for workers. Utility Model Content

[0004] The purpose of this invention is to provide a film removal device for low-emissivity glass production, which solves the problems of inconvenient operation and high labor intensity of existing film removal devices.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model discloses a film removal device for low-emissivity glass production, comprising a first conveyor and a second conveyor for feeding and unloading respectively. A support is provided at the rear of the first and second conveyors, and a mounting plate is provided on the support. A gripping mechanism and a gripping drive mechanism are provided on the mounting plate. A rotary worktable is provided between the first and second conveyors. The front of the rotary worktable is provided with a forward / backward movement mechanism, a left / right movement mechanism, a vertical movement mechanism for adjusting the position of the grinding wheel, and a grinding wheel drive mechanism for driving the grinding wheel. A dust collection hood is provided on the outer side of the grinding wheel, and the dust collection hood is connected to a filter mechanism and a fan via pipelines.

[0007] Furthermore, the gripping mechanism includes a fixed plate disposed on the gripping drive mechanism, a gripping cylinder disposed on the front side of the fixed plate, a fixed frame disposed below the gripping cylinder, a suction cup disposed below the fixed frame, and the suction cup being connected to a vacuum pump via a connecting pipe.

[0008] Furthermore, the gripping drive mechanism includes gripping timing pulleys disposed in front of the mounting plate near the left and right ends. The two gripping timing pulleys are connected by a gripping timing belt drive, and one of the gripping timing pulleys is driven by a gripping motor. The fixing plate is disposed on the gripping timing belt.

[0009] Furthermore, the forward and backward moving mechanism includes a first lead screw mounted on a frame, a first motor mounted below the frame, the first motor being connected to the first lead screw via a first transmission assembly, a first moving block being threaded onto the first lead screw, a first moving frame being mounted on the top surface of the first moving block, and the left and right moving mechanism being mounted on the top surface of the first moving frame.

[0010] Furthermore, the left and right moving mechanism includes a second lead screw disposed behind the first moving frame, a second motor disposed on the rear side of the first moving frame, the second motor being connected to the second lead screw via a second transmission assembly, a second moving block being threaded onto the second lead screw, a second moving frame being disposed behind the moving block, and a up and down moving mechanism being disposed behind the second moving frame.

[0011] Furthermore, the up-and-down moving mechanism includes a third lead screw disposed behind the second moving frame, a third motor disposed on the second moving frame, the third motor being connected to the third lead screw via a third transmission assembly, a third moving block being threaded onto the third lead screw, a third moving frame disposed behind the third moving block, a grinding wheel disposed on the rear side of the third moving frame, and a grinding wheel drive mechanism disposed on the top surface of the third moving frame.

[0012] Furthermore, the grinding wheel drive mechanism includes a fourth motor mounted on the top surface of the third moving frame. Grinding timing pulleys are mounted on the output shaft of the fourth motor and on the central shaft of the grinding wheel. The two grinding timing pulleys are connected by a grinding timing belt drive.

[0013] Furthermore, the filtration mechanism includes a filter cylinder, a bottom cover that is detachably provided at the bottom of the filter cylinder, an inner cylinder inside the filter cylinder, a filter element between the filter cylinder and the inner cylinder, an air inlet pipe communicating with the inner cylinder on the top surface of the filter cylinder, and an air outlet pipe on the side wall of the filter cylinder.

[0014] Furthermore, a clamping mechanism for clamping low-emissivity glass is provided on the rear side of the rotary worktable. The clamping mechanism includes a clamping mechanism fixing plate located behind the rotary worktable. A clamping cylinder is provided on the top surface of the clamping mechanism fixing plate. Grippers are provided on both sides of the clamping cylinder. A slide rail is also provided on the top surface of the clamping mechanism fixing plate. A slider that matches the slide rail is provided on the bottom surface of the grippers.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This invention utilizes a gripping mechanism for loading and unloading, making loading faster and more convenient. A front-to-back moving mechanism adjusts the position of the grinding wheel in the front-to-back direction, while a vertical moving mechanism adjusts the height of the grinding wheel, bringing it closer to the surface of the low-emissivity glass for easy film removal. A left-to-right moving mechanism drives the grinding wheel to move in the left-to-right direction to polish the surface of the low-emissivity glass. The coordinated operation of these mechanisms facilitates adjustment of the grinding wheel's position, enabling rapid film removal and reducing the workload for workers. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a front view of the film removal device for low-emissivity glass production according to this utility model.

[0019] Figure 2 This is a side view of the film removal device for low-emissivity glass production according to this utility model;

[0020] Figure 3 This is a top view of the film removal device for low-emissivity glass production according to this utility model;

[0021] Figure 4 This is a schematic diagram showing the positional relationship of the first conveyor, the second conveyor, the bracket, the mounting plate, the gripping mechanism, the gripping drive mechanism, and the rotary worktable of this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the gripping mechanism of this utility model;

[0023] Figure 6 This is a three-dimensional structural diagram of the front-to-back moving mechanism, left-to-right moving mechanism, up-to-down moving mechanism, grinding wheel, and grinding wheel drive mechanism of this utility model;

[0024] Figure 7 This is a three-dimensional structural diagram of the front-to-back moving mechanism, left-to-right moving mechanism, up-to-down moving mechanism, grinding wheel, and grinding wheel drive mechanism of this utility model from another angle.

[0025] Figure 8 This is a three-dimensional structural diagram of the front-to-back moving mechanism, left-to-right moving mechanism, up-to-down moving mechanism, grinding wheel, and grinding wheel drive mechanism of this utility model from other angles;

[0026] Figure 9 This is a three-dimensional structural diagram of the filtration mechanism of this utility model;

[0027] Figure 10 This is a cross-sectional view of the filtration mechanism of this utility model;

[0028] Figure 11 This is a three-dimensional structural diagram of the clamping mechanism of this utility model.

[0029] Explanation of reference numerals in the attached drawings: 1. First conveyor; 2. Second conveyor; 3. Support frame; 4. Mounting plate; 5. Gripping mechanism; 6. Gripping drive mechanism; 7. Rotary worktable; 8. Forward and backward moving mechanism; 9. Left and right moving mechanism; 10. Up and down moving mechanism; 11. Grinding wheel; 12. Grinding wheel drive mechanism; 13. Dust collection hood; 14. Filtering mechanism; 15. Fan; 16. Clamping mechanism; 5-1. Fixed plate; 5-2. Gripping cylinder; 5-3. Fixed frame; 5-4. Suction cup; 8-1. First motor; 8-2. First lead screw; 8-3. First moving frame 9-1, Second motor; 9-2, Second lead screw; 9-3, Second moving frame; 10-1, Third motor; 10-2, Third lead screw; 10-3, Third moving frame; 12-1, Fourth motor; 12-2, Grinding synchronous pulley; 12-3, Grinding synchronous belt; 14-1, Filter cartridge; 14-2, Bottom cover; 14-3, Air inlet pipe; 14-4, Air outlet pipe; 14-5, Inner cylinder; 14-6, Filter element; 16-1, Clamping mechanism fixing plate; 16-2, Clamping cylinder; 16-3, Gripper; 16-4, Slide rail; 16-5, Slider. Detailed Implementation

[0030] like Figure 1-11As shown, a film removal device for low-emissivity glass production includes a first conveyor 1 and a second conveyor 2 for feeding and unloading, respectively. The first conveyor 1 and the second conveyor 2 are belt conveyors. A support 3 is provided on the rear side of the first conveyor 1 and the second conveyor 2. A mounting plate 4 is connected to the support 3. A gripping mechanism 5 and a gripping drive mechanism 6 are installed on the mounting plate 4. A rotary worktable 7 is provided between the first conveyor 1 and the second conveyor 2. A front-to-back moving mechanism 8, a left-to-right moving mechanism 9, and a vertical moving mechanism 10 for adjusting the position of a grinding wheel 11, as well as a grinding wheel drive mechanism 12 for driving the grinding wheel 11, are provided on the front side of the rotary worktable 7. A dust collection hood 13 is provided on the outer side of the grinding wheel 11. The dust collection hood 13 is connected to a filter mechanism 14 and a fan 15 through a pipeline.

[0031] like Figure 5 As shown, the gripping mechanism 5 includes a fixed plate 5-1 slidably mounted on the gripping drive mechanism 6. A gripping cylinder 5-2 is mounted on the front side of the fixed plate 5-1. A fixed frame 5-3 is mounted on the working rod below the gripping cylinder 5-2. The fixed frame 5-3 is L-shaped, and multiple suction cups 5-4 are mounted below the fixed frame 5-3. The multiple suction cups 5-4 are connected to a vacuum pump through connecting pipes. The specific connection method between the vacuum pump and the suction cups is existing technology and will not be described in detail here. During loading, the suction cups 5-4 adhere to the surface of the glass. Then, the gripping cylinder 5-2 drives the fixed frame 5-3 and the glass to move upward. The gripping drive mechanism 6 moves the gripping mechanism 5 and the glass to the next working station.

[0032] The gripping drive mechanism 6 includes gripping timing pulleys rotatably mounted on the front of the mounting plate 4 near the left and right ends. The two gripping timing pulleys are connected by a gripping timing belt drive, and one of the gripping timing pulleys is driven by a gripping motor. The fixing plate 5-1 is fixedly connected to the gripping timing belt. A slide rail is also mounted on the front of the mounting plate 4, and a slider matching the slide rail is mounted on the rear of the fixing plate 5-1.

[0033] The rotary worktable 7 includes a rotary motor mounted on a bracket, and a rotary platform for placing glass is mounted on the output shaft of the rotary motor; the structure of the rotary worktable 7 is a common structure in the art, and its specific structure is not shown in detail in the accompanying drawings.

[0034] like Figure 6-8As shown, the forward and backward moving mechanism 8 includes a first lead screw 8-2 rotatably mounted on a frame. A first motor 8-1 is mounted below the frame, and the first motor 8-1 is connected to the first lead screw 8-2 via a first transmission assembly. A first moving block is threaded onto the first lead screw 8-2, and a first moving frame 8-3 is connected to the top surface of the first moving block. The left and right moving mechanism 9 is mounted on the top surface of the first moving frame 8-3. Slide rails are mounted on both sides of the first lead screw 8-2 on the frame, and a slider matching the slide rail is mounted on the bottom surface of the first moving frame 8-3. During operation, the first motor 8-1 operates, driving the first lead screw 8-2 to rotate via the first transmission assembly. The rotation of the first lead screw 8-2 causes the first moving block to move in the forward and backward direction, thereby driving the first moving frame 8-3 to move in the forward and backward direction, adjusting the position of the grinding wheel 11 in the forward and backward direction.

[0035] The left-right moving mechanism 9 includes a second lead screw 9-2 rotatably mounted behind the first moving frame 8-3. A second motor 9-1 is mounted on the rear side of the first moving frame 8-3. The second motor 9-1 is connected to the second lead screw 9-2 via a second transmission assembly. A second moving block is threaded onto the second lead screw 9-2. The second moving frame 9-3 is connected to the rear of the moving block. A right-up moving mechanism 10 is mounted on the rear of the second moving frame 9-3. Slide rails are mounted on both sides of the first moving frame 8-3 and on the second moving frame 9-3, matching sliders. During operation, the second motor 9-1 drives the second lead screw 9-2 to rotate via the second transmission assembly. The rotation of the second lead screw 9-2 causes the second moving block to move in the left-right direction, thereby causing the second moving frame 9-3 to move in the left-right direction. This, in turn, causes the grinding wheel 11 to move in the left-right direction to grind the surface of the low-emissivity glass.

[0036] The up-and-down moving mechanism 10 includes a third lead screw 10-2 rotatably mounted behind the second moving frame 9-3. A third motor 10-1 is mounted below the top plate of the second moving frame 9-3. The third motor 10-1 is connected to the third lead screw 10-2 through a third transmission assembly. A third moving block is threaded onto the third lead screw 10-2. The third moving frame 10-3 is connected to the rear of the third moving block. The grinding wheel 11 is rotatably mounted on the rear side of the third moving frame 10-3. A grinding wheel drive mechanism 12 is mounted on the top surface of the third moving frame 10-3. Slide rails are mounted on both sides of the second moving frame 9-3 and on the third lead screw 10-2. A slider matching the slide rail is mounted on the third moving frame 10-3. During operation, the third motor 10-1 drives the third lead screw 10-2 to rotate through the third transmission assembly. The rotation of the third lead screw 10-2 drives the third moving block to move in the up and down direction, thereby driving the third moving frame 10-3 to move in the up and down direction, adjusting the height of the grinding wheel 11 so that the grinding wheel 11 is close to the surface of the low-emissivity glass, which facilitates the film removal work.

[0037] The grinding wheel drive mechanism 12 includes a fourth motor 12-1 mounted on the top surface of the third moving frame 10-3. Grinding timing pulleys 12-2 are mounted on both the output shaft of the fourth motor 12-1 and the central shaft of the grinding wheel 11. The two grinding timing pulleys 12-2 are connected by a grinding timing belt 12-3. In use, the grinding wheel drive mechanism 12 drives the connected grinding timing pulleys 12-2 to rotate. These pulleys, in turn, drive the other grinding timing pulley 12-2 to rotate, thereby rotating the grinding wheel 11 to remove the coating from the low-emissivity glass surface.

[0038] The first transmission assembly, the second transmission assembly, and the second transmission assembly have the same structure, which is a synchronous belt and synchronous pulley transmission structure. This structure is existing technology and will not be described in detail here.

[0039] like Figure 9-10As shown, the filtration mechanism 14 includes a filter cylinder 14-1. A bottom cover 14-2 is detachably installed on the bottom of the filter cylinder 14-1 via a snap fastener. A sealing ring is installed at the connection between the bottom cover 14-2 and the filter cylinder 14-1. An inner cylinder 14-5 is connected inside the filter cylinder 14-1. Several ventilation holes are opened on the inner cylinder 14-5. A filter element 14-6 is installed between the filter cylinder 14-1 and the inner cylinder 14-5. An air inlet pipe 14-3 communicating with the inner cylinder 14-5 is connected to the top surface of the filter cylinder 14-1. An air outlet pipe 14-4 is connected to the side wall of the filter cylinder 14-1. During use, under the action of the fan 15, the gas around the grinding wheel 11 and the debris generated during the film removal process are sucked into the dust collection hood 13, and then enter the air inlet pipe 14-3 through the pipeline, and then enter the inner cylinder 14-5. After being filtered by the filter element 14-6, it is discharged through the air outlet pipe 14-4. After a period of use, the filter element 14-6 can be cleaned and replaced by opening the bottom cover 14-2.

[0040] Specifically, the filter cartridge can be a pleated polyester high-efficiency filter cartridge with a PTFE membrane or similar coating. The filter media is made into a dense pleated shape, maximizing the filtration surface area within a limited volume. An extremely thin, microporous polytetrafluoroethylene (PTFE) Teflon membrane is coated on the surface of the filter media. This membrane has extremely fine pores, allowing only air to pass through while blocking almost all particulate matter on the surface of the filter media. This prevents most debris and dust from entering the interior of the filter media. Furthermore, a pulse backflushing system can be used to effectively shake off the dust cake on the surface, rapidly reducing the filter cartridge resistance and extending its lifespan.

[0041] The rear side of the rotary table 7 is provided with a clamping mechanism 16 for clamping low-emissivity glass, such as... Figure 11 As shown, the clamping mechanism 16 includes a clamping mechanism fixing plate 16-1 disposed behind the rotary worktable 7. The clamping mechanism fixing plate 16-1 is mounted on a bracket. A clamping cylinder 16-2 is mounted on the top surface of the clamping mechanism fixing plate 16-1. The clamping cylinder 16-2 is a double-rod cylinder. Grippers 16-3 are mounted on the two working rods of the clamping cylinder 16-2. A slide rail 16-4 is also mounted on the top surface of the clamping mechanism fixing plate 16-1. A slider 16-5 matching the slide rail 16-4 is mounted on the bottom surface of the grippers 16-3. The two working rods of the clamping cylinder 16-2 drive the two grippers 16-3 to move closer together to clamp the low-emissivity glass, preventing the low-emissivity glass from shifting during the film removal process.

[0042] The working process of this utility model is as follows:

[0043] First, the gripping mechanism 5 moves the low-emissivity glass from the first conveyor 1 to the rotary table 7, and the clamping mechanism 16 fixes the position of the low-emissivity glass. Then, the forward and backward moving mechanism 8 drives the grinding wheel 11 to move backward, so that the grinding wheel 11 is above the low-emissivity glass. After that, the up and down moving mechanism 10 drives the grinding wheel 11 to descend, so that the grinding wheel 11 contacts the surface of the low-emissivity glass. The grinding wheel drive mechanism 12 drives the grinding wheel 11 to rotate, and performs the film removal work. The left and right moving mechanism 9 drives the grinding wheel 11 to move from one side of the low-emissivity glass to the other side. When the film removal on this side of the low-emissivity glass is completed, the clamping mechanism 16 releases the low-emissivity glass, and the rotary table 7 drives the low-emissivity glass to rotate 90 degrees. The film removal on the other side of the low-emissivity glass is carried out in the same way. When the film removal on all four sides is completed, the gripping mechanism 5 moves the low-emissivity glass to the second conveyor 2.

[0044] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A film removal device for low-emissivity glass production, characterized in that: The system includes a first conveyor (1) and a second conveyor (2) for loading and unloading materials, respectively. A support (3) is provided on the rear side of the first conveyor (1) and the second conveyor (2). A mounting plate (4) is provided on the support (3). A gripping mechanism (5) and a gripping drive mechanism (6) are provided on the mounting plate (4). A rotary table (7) is provided between the first conveyor (1) and the second conveyor (2). A front-to-back moving mechanism (8), a left-to-right moving mechanism (9), and a top-to-bottom moving mechanism (10) for adjusting the position of the grinding wheel (11) are provided on the front side of the rotary table (7). A grinding wheel drive mechanism (12) for driving the grinding wheel (11) is provided on the outside of the grinding wheel (11). A dust collection hood (13) is provided on the outside of the grinding wheel (11). The dust collection hood (13) is connected to a filter mechanism (14) and a fan (15) through a pipeline.

2. The film removal device for low-emissivity glass production according to claim 1, characterized in that: The gripping mechanism (5) includes a fixed plate (5-1) disposed on the gripping drive mechanism (6). A gripping cylinder (5-2) is disposed on the front side of the fixed plate (5-1). A fixed frame (5-3) is disposed below the gripping cylinder (5-2). A suction cup (5-4) is disposed below the fixed frame (5-3). The suction cup (5-4) is connected to a vacuum pump through a connecting pipe.

3. The film removal device for low-emissivity glass production according to claim 2, characterized in that: The gripping drive mechanism (6) includes gripping timing pulleys located in front of the mounting plate (4) near the left and right ends. The two gripping timing pulleys are connected by a gripping timing belt drive. One of the gripping timing pulleys is driven by a gripping motor. The fixing plate (5-1) is located on the gripping timing belt.

4. The film removal device for low-emissivity glass production according to claim 1, characterized in that: The forward and backward moving mechanism (8) includes a first lead screw (8-2) mounted on a frame. A first motor (8-1) is mounted below the frame. The first motor (8-1) is connected to the first lead screw (8-2) via a first transmission assembly. A first moving block is threaded onto the first lead screw (8-2). A first moving frame (8-3) is mounted on the top surface of the first moving block. The left and right moving mechanism (9) is mounted on the top surface of the first moving frame (8-3).

5. The film removal device for low-emissivity glass production according to claim 4, characterized in that: The left and right moving mechanism (9) includes a second lead screw (9-2) disposed behind the first moving frame (8-3). A second motor (9-1) is disposed on the rear side of the first moving frame (8-3). The second motor (9-1) is connected to the second lead screw (9-2) through a second transmission assembly. A second moving block is threaded onto the second lead screw (9-2). A second moving frame (9-3) is disposed behind the moving block. An up and down moving mechanism (10) is disposed behind the second moving frame (9-3).

6. The film removal device for low-emissivity glass production according to claim 5, characterized in that: The up-and-down moving mechanism (10) includes a third lead screw (10-2) disposed behind the second moving frame (9-3). A third motor (10-1) is disposed on the second moving frame (9-3). The third motor (10-1) is connected to the third lead screw (10-2) through a third transmission assembly. A third moving block is threaded onto the third lead screw (10-2). A third moving frame (10-3) is disposed behind the third moving block. The grinding wheel (11) is disposed on the rear side of the third moving frame (10-3). A grinding wheel drive mechanism (12) is disposed on the top surface of the third moving frame (10-3).

7. The film removal device for low-emissivity glass production according to claim 6, characterized in that: The grinding wheel drive mechanism (12) includes a fourth motor (12-1) disposed on the top surface of the third moving frame (10-3). Grinding synchronous pulleys (12-2) are disposed on the output shaft of the fourth motor (12-1) and on the central shaft of the grinding wheel (11). The two grinding synchronous pulleys (12-2) are connected by a grinding synchronous belt (12-3).

8. The film removal device for low-emissivity glass production according to claim 1, characterized in that: The filtration mechanism (14) includes a filter cylinder (14-1), a bottom cover (14-2) is detachably provided at the bottom of the filter cylinder (14-1), an inner cylinder (14-5) is provided inside the filter cylinder (14-1), a filter element (14-6) is provided between the filter cylinder (14-1) and the inner cylinder (14-5), an air inlet pipe (14-3) is provided on the top surface of the filter cylinder (14-1) and communicates with the inner cylinder (14-5), and an air outlet pipe (14-4) is provided on the side wall of the filter cylinder (14-1).

9. The film removal device for low-emissivity glass production according to claim 1, characterized in that: The rotary worktable (7) is provided with a clamping mechanism (16) for clamping low-emissivity glass. The clamping mechanism (16) includes a clamping mechanism fixing plate (16-1) located behind the rotary worktable (7). A clamping cylinder (16-2) is provided on the top surface of the clamping mechanism fixing plate (16-1). Claws (16-3) are provided on both sides of the clamping cylinder (16-2). A slide rail (16-4) is also provided on the top surface of the clamping mechanism fixing plate (16-1). A slider (16-5) matching the slide rail (16-4) is provided on the bottom surface of the claw (16-3).

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