An AG anti-glare glass coating device

Abstract

The present invention provides an AG anti-glare glass coating device, which relates to the technical field of glass coating and includes: a bottom ring; a support base is connected to the top of the bottom ring, and a positioning bolt is connected to the bottom of the support base, and the positioning bolt is connected to the bottom ring; a fixing ring is installed on the top of the support base, and a rotating cap is connected to the top of the support base, and the bottom of the rotating cap is located within the fixing ring; a motor is installed inside the support base, and the driving shaft of the motor is connected to the rotating cap; four ring frames are connected around the outside of the rotating cap, and the ring frames are connected to the support base. The present invention adopts a multi-axis driving method to make the glass perform coating operations in a multi-axis moving and rotating state, effectively ensuring the quality of glass coating. It solves the problem that most traditional AG anti-glare glass coating processing operations adopt single-axis or double-axis rotation methods, and there are differences in coating conditions in different parts, resulting in different coating times and the adhesion amount of coating substances in some areas compared with other areas, which is likely to cause uneven coating thickness.

Description

Technical Field

[0001] The present invention relates to the technical field of glass coating, and particularly to an AG anti-glare glass coating device. Background Art

[0002] AG anti-glare glass coating is a technology that forms an anti-glare coating on the glass surface through a specific process, forming a microscopic rough structure on the glass substrate surface, so that when light is incident, it is scattered into diffuse reflected light at different angles, avoiding direct light from entering the human eye and reducing the glare phenomenon. With its excellent performance and diverse functions, the AG anti-glare glass coating technology has been widely used in many fields.

[0003] Currently, most of the AG anti-glare glass coating processing operations adopt the single-axis or double-axis rotation method. When the glass is being coated, its local position is always in the upper and lower ends, resulting in different coating conditions in different parts of the glass during the coating process, leading to differences in the coating time and the adhesion amount of the coating material in some areas compared to other areas, and thus easily causing uneven coating thickness, which restricts the quality of AG anti-glare glass coating. Summary of the Invention

[0004] The present invention relates to an AG anti-glare glass coating device. When the motor drives the rotating cap to rotate, the large gear meshes with the large gear ring to drive the fixed ring to rotate; while the rotating cap and the fixed ring are rotating, the small gear meshes with the small gear ring to drive the transmission shaft to rotate, and the transmission gear meshes with the transmission gear ring to further drive the inner ring to rotate, enabling the glass to perform the coating operation in a multi-axis moving and rotating state, effectively ensuring the quality of the glass coating.

[0005] In the first aspect of the present invention, an AG anti-glare glass coating device is provided, which specifically includes: a bottom ring, a support seat, positioning bolts, a fixed ring, a rotating cap, a motor, a ring frame, an inner ring, a ring piece, a limiting bolt, and a transmission shaft; the top of the bottom ring is connected with a support seat, the bottom of the support seat is connected with positioning bolts, and the positioning bolts are connected with the bottom ring; the top of the support seat is provided with a fixed ring, the top of the support seat is connected with a rotating cap, and the bottom of the rotating cap is located inside the fixed ring; a motor is installed inside the support seat, and the driving shaft of the motor is connected with the rotating cap; four ring frames are connected around the outside of the rotating cap, and the ring frames are connected with the support seat; an inner ring is connected inside the ring frames, the glass is placed inside the inner ring, a ring piece is connected to the outside of the inner ring, a limiting bolt is connected inside the ring piece, and the limiting bolt is connected with the inner ring; a transmission shaft is connected inside the ring frames, one end of the transmission shaft is connected with the support seat, and the other end of the transmission shaft is connected with the inner ring.

[0006] Furthermore, a rubber ring is provided outside the ring piece. The rubber ring is located inside the inner ring and contacts the edge of the glass. Mushroom blocks are arranged around the outside of the inner ring, and irregular holes are arranged around the inside of the ring piece. One end of the irregular hole has a larger aperture than the other end. The mushroom blocks are connected to the irregular holes and contact the outer side of the ring piece. When the glass is placed inside the inner ring, the ring piece is connected to the inner ring. At this time, the rubber ring contacts the edge of the glass, achieving the effect of clamping and fixing the glass.

[0007] Furthermore, a limit hole is provided outside the inner ring, and a limit screw hole is provided inside the ring piece. The limit screw hole communicates with the limit hole. A limit bolt is threadedly connected to the limit screw hole, and the end of the limit bolt is connected to the limit hole. The mushroom block is inserted into the end of the irregular hole with a larger aperture. Rotate the ring piece to move the mushroom block to the end of the irregular hole with a smaller aperture. The limit screw hole and the limit hole are in a communicating state. Rotate the limit bolt to extend the end of the limit bolt into the limit hole to fix the ring piece through the limit bolt.

[0008] Furthermore, the bottom of the rotating cap is rotatably connected to the fixed ring. Rotating holes are arranged around the outside of the rotating cap, and a hollow shaft is provided outside the ring frame. The hollow shaft is rotatably connected to the rotating holes, and the inner ring is rotatably connected to the ring frame.

[0009] Furthermore, a large gear ring is provided at the top of the support seat, and a large gear is provided at the end of the hollow shaft. The large gear meshes with the large gear ring. When the motor drives the rotating cap to rotate, the large gear and the large gear ring are in meshing transmission to drive the fixed ring to rotate.

[0010] Furthermore, the transmission shaft is rotatably connected to the hollow shaft. A small gear is provided at one end of the transmission shaft, and a small gear ring is provided at the top of the support seat. The small gear meshes with the small gear ring.

[0011] Furthermore, a transmission gear is provided at the other end of the transmission shaft. The transmission gear is located inside the ring frame, and a transmission gear ring is provided outside the inner ring. The transmission gear meshes with the transmission gear ring. While the rotating cap and the fixed ring are rotating, the small gear and the small gear ring are in meshing transmission to drive the transmission shaft to rotate, and the transmission gear and the transmission gear ring are in meshing transmission to further drive the inner ring to rotate.

[0012] Furthermore, L-shaped blocks are arranged around the top of the bottom ring, and arc-shaped holes are arranged around the top of the support seat. The L-shaped blocks are connected to the arc-shaped holes and contact the top side of the support seat. When the support seat is installed on the top of the bottom ring, the L-shaped blocks are inserted into the arc-shaped holes, and the support seat is rotated to make the L-shaped blocks contact the top side of the support seat.

[0013] Further, positioning holes are provided inside the bottom ring, positioning screw holes are provided at the bottom of the support base, the positioning screw holes communicate with the positioning holes, positioning bolts are threadedly connected to the positioning screw holes, the ends of the positioning bolts are connected to the positioning holes, when the positioning screw holes communicate with the positioning holes, rotate the positioning bolts so that the ends of the positioning bolts extend into the positioning holes, and the support base is fixed by the positioning bolts.

[0014] The present invention provides an AG anti-glare glass coating device, which has the following beneficial effects:

[0015] When the present invention is in use, after the glass is placed in the inner ring, the ring piece is connected to the inner ring. At this time, the rubber ring contacts the edge of the glass, playing a role in clamping and fixing the glass. The mushroom block is inserted into the end with a larger aperture of the special-shaped hole, and the ring piece is rotated so that the mushroom block moves to the end with a smaller aperture of the special-shaped hole. The limit screw hole and the limit hole are in a communicating state. Rotate the limit bolt so that the end of the limit bolt extends into the limit hole, and the ring piece is fixed by the limit bolt, effectively ensuring the stability of the ring piece clamping the glass, so that the glass coating operation can be carried out smoothly; after the glass coating is completed, rotate the limit bolt in the reverse direction, the end of the limit bolt separates from the limit hole, the ring piece is unlocked, and then the ring piece can be rotated in the reverse direction to take out the glass located inside the inner ring, and the operation is simple and fast.

[0016] In addition, when the motor drives the rotating cap to rotate, the large gear and the large gear ring are meshed and driven to drive the fixed ring to rotate; while the rotating cap and the fixed ring are rotating, the small gear and the small gear ring are meshed and driven to drive the transmission shaft to rotate, and the transmission gear and the transmission gear ring are meshed and driven to further drive the inner ring to rotate, so that the glass realizes the coating operation in a multi-axis moving and rotating state, effectively ensuring the quality of the glass coating, and overcoming the problem that in traditional glass rotary coating, the upper and lower ends of the glass are always at the local part, resulting in uneven coating thickness and affecting the quality of the glass coating.

[0017] In addition, when the support base is installed on the top of the bottom ring, the L-shaped block is inserted into the arc-shaped hole, rotate the support base so that the L-shaped block is in contact with the top side of the support base. At this time, the positioning screw hole communicates with the positioning hole, rotate the positioning bolt so that the end of the positioning bolt extends into the positioning hole, and the support base is fixed by the positioning bolt, effectively ensuring the firmness of the connection between the support base and the bottom ring; when a fault occurs in the device, rotate the positioning bolt in the reverse direction, the end of the positioning bolt separates from the positioning hole, the support base is unlocked, and then the support base can be rotated in the reverse direction to separate the support base from the top of the bottom ring, which is more convenient for the maintenance operation of the device.

[0018] Other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0020] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached picture:

[0022] Figure 1 The overall axial side structure schematic diagram of the present application is shown;

[0023] Figure 2 A schematic diagram of the split structure of the bottom ring and the support seat of the present application is shown;

[0024] Figure 3 A schematic diagram of the bottom shaft side structure of the support base of the present application is shown;

[0025] Figure 4 A schematic diagram of the disassembled structure of the support seat, the fixing ring and the rotating cap of the present application is shown;

[0026] Figure 5 A schematic diagram of the cross-sectional structure of the rotary cap of the present application is shown;

[0027] Figure 6 A schematic diagram of the connection structure between the inner ring and the ring sheet of the present application is shown;

[0028] Figure 7 The schematic diagram of the split structure of the inner ring and the ring sheet of the present application is shown;

[0029] Figure 8 The schematic diagram of the split structure of the ring frame and the inner ring of the present application is shown;

[0030] Figure 9 A schematic diagram of the split structure of the ring frame and the transmission shaft of the present application is shown.

[0031] Reference numerals list

[0032] 1. Bottom ring; 101. L-shaped block; 102. Positioning hole; 2. Support seat; 201. Arc hole; 202. Positioning screw hole; 203. Large gear ring; 204. Small gear ring; 3. Positioning bolt; 4. Fixed ring; 5. Rotating cap; 501. Rotating hole; 6. Motor; 7. Ring frame; 701. Hollow shaft; 7011. Large gear; 8. Inner ring; 801. Mushroom block; 802. Limiting hole; 803. Transmission gear ring; 9. Ring piece; 901. Rubber ring; 902. Special-shaped hole; 903. Limiting screw hole; 10. Limiting bolt; 11. Transmission shaft; 1101. Small gear; 1102. Transmission gear. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0034] Embodiment 1: Please refer to Figures 1 to 9 :

[0035] The present invention provides an AG anti-glare glass coating device, including: a bottom ring 1, a support base 2, positioning bolts 3, a fixing ring 4, a rotating cap 5, a motor 6, a ring frame 7, an inner ring 8, a ring piece 9, a limit bolt 10, and a transmission shaft 11; the top of the bottom ring 1 is connected to the support base 2, the bottom of the support base 2 is connected to the positioning bolts 3, and the positioning bolts 3 are connected to the bottom ring 1; the top of the support base 2 is installed with the fixing ring 4, the top of the support base 2 is connected to the rotating cap 5, and the bottom of the rotating cap 5 is located inside the fixing ring 4; the support base 2 internally installs the motor 6, and the drive shaft of the motor 6 is connected to the rotating cap 5; four ring frames 7 are circumferentially connected to the outside of the rotating cap 5, and the ring frames 7 are connected to the support base 2; the inner ring 8 is connected inside the ring frame 7, the glass is placed inside the inner ring 8, the ring piece 9 is connected to the outside of the inner ring 8, the limit bolt 10 is connected inside the ring piece 9, and the limit bolt 10 is connected to the inner ring 8; the transmission shaft 11 is connected inside the ring frame 7, one end of the transmission shaft 11 is connected to the support base 2, and the other end of the transmission shaft 11 is connected to the inner ring 8.

[0036] In the embodiment of the present invention, a rubber ring 901 is provided outside the ring piece 9, the rubber ring 901 is located inside the inner ring 8, the rubber ring 901 contacts the edge of the glass, mushroom blocks 801 are circumferentially provided outside the inner ring 8, special-shaped holes 902 are circumferentially provided inside the ring piece 9, the aperture of one end of the special-shaped hole 902 is larger than that of the other end, the mushroom blocks 801 are connected inside the special-shaped holes 902, the mushroom blocks 801 contact the outside of the ring piece 9, a limit hole 802 is provided outside the inner ring 8, a limit screw hole 903 is provided inside the ring piece 9, the limit screw hole 903 communicates with the limit hole 802, the limit bolt 10 is threadedly connected inside the limit screw hole 903, and the end of the limit bolt 10 is connected inside the limit hole 802;

[0037] With the above technical solution, after the glass is placed in the inner ring 8, the ring piece 9 is connected to the inner ring 8. At this time, the rubber ring 901 contacts the edge of the glass, achieving the effect of clamping and fixing the glass. The mushroom block 801 is inserted into the end with a larger aperture of the special-shaped hole 902. Rotate the ring piece 9 to move the mushroom block 801 to the end with a smaller aperture of the special-shaped hole 902. The limit screw hole 903 and the limit hole 802 are in a communicating state. Rotate the limit bolt 10 so that the end of the limit bolt 10 extends into the limit hole 802, and fix the ring piece 9 through the limit bolt 10, effectively ensuring the stability of the ring piece 9 clamping the glass, so that the glass coating operation can be carried out smoothly. After the glass coating is completed, rotate the limit bolt 10 in the reverse direction, the end of the limit bolt 10 separates from the limit hole 802, and the ring piece 9 is unlocked. Then, the ring piece 9 can be rotated in the reverse direction to take out the glass located inside the inner ring 8, and the operation is simple and fast.

[0038] In the embodiment of the present invention, the bottom of the rotating cap 5 is rotatably connected to the fixed ring 4. A rotating hole 501 is provided around the outside of the rotating cap 5. A hollow shaft 701 is provided outside the ring frame 7. The hollow shaft 701 is rotatably connected to the rotating hole 501. The inner ring 8 is rotatably connected to the ring frame 7. A large gear ring 203 is provided at the top of the support seat 2. A large gear 7011 is provided at the end of the hollow shaft 701. The large gear 7011 meshes with the large gear ring 203.

[0039] With the above technical solution, when the motor 6 drives the rotating cap 5 to rotate, the large gear 7011 and the large gear ring 203 are in meshing transmission, driving the fixed ring 4 to rotate.

[0040] In the embodiment of the present invention, the transmission shaft 11 is rotatably connected to the hollow shaft 701. A small gear 1101 is provided at one end of the transmission shaft 11. A small gear ring 204 is provided at the top of the support seat 2. The small gear 1101 meshes with the small gear ring 204. A transmission gear 1102 is provided at the other end of the transmission shaft 11. The transmission gear 1102 is located inside the ring frame 7. A transmission gear ring 803 is provided outside the inner ring 8. The transmission gear 1102 meshes with the transmission gear ring 803.

[0041] With the above technical solution, while the rotating cap 5 and the fixed ring 4 are rotating, the small gear 1101 and the small gear ring 204 are in meshing transmission, driving the transmission shaft 11 to rotate. The transmission gear 1102 and the transmission gear ring 803 are in meshing transmission, further driving the inner ring 8 to rotate, enabling the glass to perform the coating operation in a multi-axis moving and rotating state, effectively ensuring the quality of the glass coating, and overcoming the problem that in traditional glass rotary coating, the upper and lower ends of the glass are always at the local part, resulting in uneven coating thickness and affecting the quality of the glass coating.

[0042] Embodiment 2. On the basis of Embodiment 1, an L-shaped block 101 is arranged around the top of the bottom ring 1, an arc-shaped hole 201 is arranged around the top of the bottom of the support base 2, the L-shaped block 101 is connected in the arc-shaped hole 201, the L-shaped block 101 is in contact with the top side of the support base 2, a positioning hole 102 is arranged inside the bottom ring 1, a positioning screw hole 202 is arranged at the bottom of the support base 2, the positioning screw hole 202 communicates with the positioning hole 102, a positioning bolt 3 is threadedly connected in the positioning screw hole 202, and the end of the positioning bolt 3 is connected in the positioning hole 102;

[0043] With the above technical solution, when the support base 2 is installed on the top of the bottom ring 1, the L-shaped block 101 is inserted into the arc-shaped hole 201, and the support base 2 is rotated to make the L-shaped block 101 in contact with the top side of the support base 2. At this time, the positioning screw hole 202 communicates with the positioning hole 102. The positioning bolt 3 is rotated to make the end of the positioning bolt 3 extend into the positioning hole 102, and the support base 2 is fixed by the positioning bolt 3, effectively ensuring the firm connection between the support base 2 and the bottom ring 1; when a fault occurs in the device, the positioning bolt 3 is rotated in the reverse direction, the end of the positioning bolt 3 is separated from the positioning hole 102, and the support base 2 is unlocked. Then the support base 2 can be rotated in the reverse direction to separate the support base 2 from the top of the bottom ring 1, which is more convenient for the maintenance operation of the device.

[0044] Working principle of this embodiment: First, place the glass inside the inner ring 8. The ring piece 9 is connected inside the inner ring 8. At this time, the rubber ring 901 contacts the edge of the glass, achieving the effect of clamping and fixing the glass. The mushroom block 801 is inserted into the end with a larger aperture of the special-shaped hole 902. Rotate the ring piece 9 so that the mushroom block 801 moves to the end with a smaller aperture of the special-shaped hole 902. The limit screw hole 903 and the limit hole 802 are in a communicating state. Rotate the limit bolt 10 so that the end of the limit bolt 10 extends into the limit hole 802, and fix the ring piece 9 through the limit bolt 10, effectively ensuring the stability of the ring piece 9 clamping the glass. The motor 6 drives the rotating cap 5 to rotate. The large gear 7011 and the large gear ring 203 are in meshing transmission, driving the fixed ring 4 to rotate. While the rotating cap 5 and the fixed ring 4 are rotating, the small gear 1101 and the small gear ring 204 are in meshing transmission, driving the transmission shaft 11 to rotate. The transmission gear 1102 and the transmission gear ring 803 are in meshing transmission, further driving the inner ring 8 to rotate, enabling the glass to perform coating operations in a multi-axis moving and operating state, effectively ensuring the quality of the glass coating. After the glass coating is completed, rotate the limit bolt 10 in the reverse direction. The end of the limit bolt 10 separates from the limit hole 802, and the ring piece 9 is unlocked. Then, the ring piece 9 can be rotated in the reverse direction to take out the glass inside the inner ring 8, and the operation is simple and fast. When the support base 2 is installed on the top of the bottom ring 1, the L-shaped block 101 is inserted into the arc-shaped hole 201. Rotate the support base 2 so that the L-shaped block 101 is in contact with the top side of the support base 2. At this time, the positioning screw hole 202 and the positioning hole 102 are in a communicating state. Rotate the positioning bolt 3 so that the end of the positioning bolt 3 extends into the positioning hole 102, and fix the support base 2 through the positioning bolt 3, effectively ensuring the firmness of the connection between the support base 2 and the bottom ring 1. When a malfunction occurs in the device, rotate the positioning bolt 3 in the reverse direction. The end of the positioning bolt 3 separates from the positioning hole 102, and the support base 2 is unlocked. Then, the support base 2 can be rotated in the reverse direction to separate the support base 2 from the top of the bottom ring 1, making it more convenient to perform maintenance operations on the device.

[0045] In this article, the following points need attention:

[0046] 1. The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention. Other structures can refer to the general design.

[0047] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0048] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An AG anti-glare glass coating device, comprising: A bottom ring (1), a support seat (2), a positioning bolt (3), a fixing ring (4), a rotating cap (5), a motor (6), a ring frame (7), an inner ring (8), a ring sheet (9), a limiting bolt (10) and a transmission shaft (11); characterized in that the top of the bottom ring (1) is connected to the support seat (2), the bottom of the support seat (2) is connected to the positioning bolt (3), and the positioning bolt (3) is connected to the bottom ring (1); the top of the support seat (2) is installed with a fixing ring (4), the top of the support seat (2) is connected with a rotating cap (5), and the bottom of the rotating cap (5) is located on the fixing ring ( 4); a motor (6) is installed inside the support seat (2), and the driving shaft of the motor (6) is connected to the rotating cap (5); four ring frames (7) are connected to the outside of the rotating cap (5), and the ring frames (7) are connected to the support seat (2); the inner ring (8) is connected to the inner ring (8), and the glass is placed in the inner ring (8); the outer ring (8) is connected to a ring sheet (9), and the inner ring (9) is connected to a limit bolt (10), and the limit bolt (10) is connected to the inner ring (8); the inner ring frame (7) is connected to a transmission shaft (11), and the transmission shaft (11) One end is connected to the support seat (2), and the other end of the transmission shaft (11) is connected to the inner ring (8); the bottom of the rotating cap (5) is rotatably connected to the fixed ring (4), the outer part of the rotating cap (5) is surrounded by a rotating hole (501), the outer part of the ring frame (7) is provided with a hollow shaft (701), the hollow shaft (701) is rotatably connected to the rotating hole (501), and the inner ring (8) is rotatably connected to the ring frame (7); the top of the support seat (2) is provided with a large gear ring (203), the end of the hollow shaft (701) is provided with a large gear (7011), and the large gear (7011) is connected to the large gear. The transmission shaft (11) is rotatably connected to the hollow shaft (701); a pinion (1101) is provided at one end of the transmission shaft (11); a pinion (204) is provided at the top of the support seat (2); the pinion (1101) and the pinion (204) are meshed with each other; a transmission gear (1102) is provided at the other end of the transmission shaft (11); the transmission gear (1102) is located inside the ring frame (7); a transmission gear ring (803) is provided outside the inner ring (8); the transmission gear (1102) and the transmission gear ring (803) are meshed with each other.

2. The AG anti-glare glass coating device according to claim 1, characterized in that: The ring piece (9) is provided with a rubber ring (901) on the outside, the rubber ring (901) is located inside the inner ring (8), the rubber ring (901) contacts the edge of the glass, the inner ring (8) is surrounded by a mushroom block (801), the ring piece (9) is surrounded by a special-shaped hole (902), the special-shaped hole (902) has a larger aperture at one end than at the other end, the mushroom block (801) is connected to the special-shaped hole (902), and the mushroom block (801) contacts the outside of the ring piece (9).

3. The AG anti-glare glass coating device according to claim 1, characterized in that: A limiting hole (802) is arranged outside the inner ring (8), a limiting screw hole (903) is arranged inside the ring plate (9), the limiting screw hole (903) is communicated with the limiting hole (802), the limiting bolt (10) is threadedly connected in the limiting screw hole (903), and the end of the limiting bolt (10) is connected in the limiting hole (802).

4. The AG anti-glare glass coating device according to claim 1, characterized in that: An L-shaped block (101) is arranged around the top of the bottom ring (1), an arc-shaped hole (201) is arranged around the top of the bottom of the support seat (2), the L-shaped block (101) is connected to the arc-shaped hole (201), and the L-shaped block (101) is in contact with the top side of the support seat (2).

5. The AG anti-glare glass coating device according to claim 1, characterized in that: The bottom ring (1) is provided with a positioning hole (102) inside, the bottom of the support seat (2) is provided with a positioning screw hole (202), the positioning screw hole (202) is communicated with the positioning hole (102), the positioning bolt (3) is threadedly connected in the positioning screw hole (202), and the end of the positioning bolt (3) is connected in the positioning hole (102).

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