Faucet surface polishing machine

Abstract

The invention discloses a faucet surface polishing machine, which relates to the technical field of metal polishing equipment and comprises an annular conveyor, a jacking rack, a vertical polishing frame and a horizontal polishing frame. According to the water faucet polishing device, the water faucet is polished in the mode that the vertical polishing wheel and the horizontal polishing wheel are combined, the multiple cotton cloth wheels with the diameters decreasing progressively are arranged in the vertical polishing wheel, the multiple cotton cloth wheels form a polishing structure with the cross section being in a < shape so as to adapt to a complex curved surface structure of the water faucet part, and the polishing effect of the water faucet part is ensured; the horizontal polishing wheel can polish the stand column part of the faucet, the faucet is continuously conveyed by combining the annular conveying line, and the polishing quality of the faucet is guaranteed while continuous conveying is achieved.

Description

Technical Field

[0001] This invention relates to the field of metal polishing equipment technology, and in particular to a faucet surface polishing machine. Background Technology

[0002] As a common bathroom hardware component, the surface polishing quality of faucets directly affects the product's aesthetics and corrosion resistance. Traditional faucet polishing mainly relies on manual operation or the use of semi-automatic polishing equipment in one direction. Manual polishing is not only labor-intensive and inefficient, but the polishing quality is also greatly affected by the operator's experience, resulting in poor consistency and making it difficult to meet the needs of mass production.

[0003] Many existing polishing equipment uses single-axis or unidirectional polishing wheels. For faucets with complex structures (usually including the "faucet" part composed of irregular curved surfaces and the columnar "post" part), multiple clamping, tool changes or multiple processes are often required to complete the overall polishing. This method involves frequent process changes, making it difficult to achieve continuous assembly line operation and resulting in low production efficiency. For the irregular curved surfaces of the faucet part, especially the concave areas and the transition points (rounded corners) connecting with the post, general polishing wheels are difficult to fit tightly, which can easily lead to uneven polishing or omissions.

[0004] Therefore, it is necessary to invent a faucet surface polishing machine to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a faucet surface polishing machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a faucet surface polishing machine, comprising: A circular conveyor with a circular conveyor chain installed above it. Multiple support trays are fixedly installed on the outer side of the circular conveyor chain, and a faucet support rod is installed through the middle of each of the multiple support trays. A lifting frame is fixedly installed on the outer bottom of the ring conveyor. A top rod is movably installed at the top center of the lifting frame, and the top rod is located below the faucet support rod. A vertical polishing frame is slidably mounted on the outer top of a ring conveyor. A vertical polishing wheel is rotatably mounted inside the vertical polishing frame. Two vertical polishing wheels are symmetrically distributed. Multiple cotton cloth wheels are installed between the two vertical polishing wheels. The diameter of the multiple cotton cloth wheels decreases from the outside to the inside. The multiple cotton cloth wheels form a polishing mechanism with a "<" shaped cross section to adapt to the faucet part of the faucet. A horizontal polishing frame is fixedly installed at the top of a ring conveyor. A horizontal polishing wheel is rotatably installed inside the horizontal polishing frame. The horizontal polishing wheel is used to polish the upright part of the faucet.

[0007] Preferably, it also includes a slide table, which is fixedly installed at the bottom end of the vertical polishing frame, and a lead screw sleeve is fixedly installed at the bottom end of the slide table, and a transmission lead screw is installed through the inside of the lead screw sleeve; A slide block is slidably mounted below a slide table and fixedly mounted on the outside of a circular conveyor. A sliding motor is fixedly mounted on one end of the slide block, and the output end of the sliding motor is fixedly connected to one end of a transmission screw. The slide block and the slide table limit the horizontal sliding of the vertical polishing frame so that multiple cotton cloth wheels can complete the polishing of the faucet part.

[0008] Preferably, it also includes a sleeve, which is fixedly installed at the bottom end of the faucet support rod; The insert rod is fixedly installed at the top of the top rod and is adapted to the insert sleeve. Both the insert sleeve and the insert rod have a "convex" cross-section to restrict the relative rotation of the insert sleeve and the insert rod.

[0009] Preferably, it also includes a lifting platform, which is slidably installed inside the lifting frame, and the top rod is rotatably installed in the middle of the upper surface of the lifting platform; A crank arm is fixedly installed in the middle of the top rod. A rotating cylinder is rotatably mounted on one end of the crank arm via a pin. A support seat is rotatably mounted on one end of the rotating cylinder via a pin. The support seat is fixedly installed on the upper surface of the lifting platform. The rotating cylinder and the crank arm are used to drive the top rod to rotate. The top rod drives the faucet bearing rod and the faucet to rotate through the insert rod and insert sleeve, thereby causing the faucet column to be polished around.

[0010] Preferably, it also includes a lifting cylinder, which is fixedly installed between the lower surface of the lifting platform and the bottom inner wall of the lifting frame. The lifting cylinder is used to drive the lifting platform and the top rod to move up and down to adjust the upper and lower surfaces of the faucet part of the faucet to contact the cotton cloth wheel for polishing.

[0011] Preferably, it also includes a limiting block, which is fixedly installed on the top of the faucet support rod. The upper surface of the support tray is provided with a limiting groove that matches the limiting block. The limiting block and the limiting groove are used to limit the rotation of the faucet during the movement of following the annular conveyor chain.

[0012] Preferably, it also includes a support shaft, which is rotatably mounted inside the vertical polishing frame. The vertical polishing wheel and the cotton cloth wheel are both sleeved on the outside of the support shaft. Multiple mounting bolts are installed through the middle of the support shaft, and the multiple mounting bolts pass through the vertical polishing wheel and the cotton cloth wheel.

[0013] Preferably, the cross-section of the cotton cloth wheel has a wave-like structure.

[0014] Preferably, both ends of the outer wall of the horizontal polishing wheel are provided with rounded corners, which are used to adapt to the polishing of the connection between the faucet post and the faucet part.

[0015] Preferably, it also includes a rubber stopper, which is fixedly installed at the top of the faucet support rod and adapted to the inner diameter of the bottom end of the faucet. The rubber stopper is used to insert into the bottom end of the faucet to achieve the support and positioning of the faucet.

[0016] The technical effects and advantages of this invention are as follows: 1. This invention polishes faucets by combining vertical and horizontal polishing wheels. The vertical polishing wheel has multiple cotton cloth wheels with decreasing diameters inside, forming a polishing structure with a "<" shaped cross-section to adapt to the complex curved surface structure of the faucet head, ensuring the polishing effect of the faucet head. The horizontal polishing wheel can polish the upright part of the faucet. Furthermore, by combining it with a circular conveyor line to continuously transport the faucet, the polishing quality of the faucet is guaranteed while achieving continuous transport. 2. This invention employs a liftable and rotatable top rod to drive the faucet's movement. During the polishing process, the faucet's height can be flexibly adjusted to ensure that both the upper and lower surfaces of the faucet's head can contact the vertical polishing wheel, achieving comprehensive polishing of the faucet's head. Furthermore, when polishing the faucet's column, the top rod drives the faucet to rotate while moving it up and down, allowing the faucet's column to contact the horizontal polishing wheel, thus achieving comprehensive polishing of the faucet's column and ensuring the polishing quality of the faucet. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the annular conveyor structure of the present invention; Figure 3 This is a schematic diagram of the support tray structure of the present invention; Figure 4 This is a schematic diagram of the lifting frame structure of the present invention; Figure 5 This is a schematic diagram of the push rod structure of the present invention; Figure 6 This is a schematic diagram of the horizontal polishing wheel structure of the present invention; Figure 7 This is a schematic diagram of the vertical polishing wheel structure of the present invention; Figure 8 This is a schematic diagram of the slide structure of the present invention; Figure 9 This is a schematic diagram of the horizontal and vertical polishing wheel structures of the present invention; Figure 10This is a cross-sectional schematic diagram of the vertical polishing wheel structure of the present invention.

[0018] In the diagram: 1. Circular conveyor; 11. Circular conveyor chain; 12. Carrying tray; 13. Limiting groove; 14. Water tap support rod; 15. Rubber plug; 16. Insert sleeve; 131. Limiting block; 2. Lifting frame; 21. Top rod; 22. Lifting platform; 23. Lifting cylinder; 24. Crank arm; 25. Rotating cylinder; 211. Insert rod; 251. Support seat; 3. Vertical polishing frame; 31. Vertical polishing wheel; 32. Slide table; 311. Cotton wheel; 312. Support shaft; 313. Mounting bolt; 321. Screw sleeve; 322. Transmission screw; 323. Sliding motor; 324. Slide seat; 4. Horizontal polishing frame; 41. Horizontal polishing wheel; 411. Rounded corner. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 10 As shown, the faucet surface polishing machine provided by the present invention is essentially a polishing machine that can achieve uniform automatic polishing of the outer surface of a faucet.

[0021] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment. In this embodiment, no special limitations are imposed.

[0022] In this embodiment, a faucet surface polishing machine includes: A circular conveyor 1 has a circular conveyor chain 11 installed on top of it. Multiple carrying trays 12 are fixedly installed on the outside of the circular conveyor chain 11. A faucet carrying rod 14 is installed through the middle of each of the multiple carrying trays 12. The circular conveyor 1 has an overall elliptical frame structure. The circular conveyor chain 11 is a motor-driven chain plate. The motor of the circular conveyor chain 11 can drive the circular conveyor chain 11 to move intermittently to facilitate the loading and unloading of faucets and polishing. A rubber plug 15 is fixedly installed on the top of the faucet support rod 14 and is adapted to the inner diameter of the bottom end of the faucet. The rubber plug 15 is used to insert into the bottom end of the faucet to achieve the bearing and positioning of the faucet. The rubber plug 15 is made of hard rubber of polyurethane material. When it is inserted into the bottom end of the faucet, it undergoes a small deformation and uses friction to tighten the faucet. The insert 16 is fixedly installed at the bottom end of the faucet support rod 14; The limiting block 131 is fixedly installed on the top of the faucet support rod 14. The upper surface of the support tray 12 is provided with a limiting groove 13 that is adapted to the limiting block 131. The limiting block 131 and the limiting groove 13 are used to limit the rotation of the faucet during the movement of following the annular conveyor chain 11. The limiting block 131 is made of cast iron with a large self-weight, which can ensure the stability of the faucet support rod 14 when it moves with the support tray 12. The insert rod 211 is fixedly installed at the top of the top rod 21 and is adapted to the insert sleeve 16. The cross sections of both the insert sleeve 16 and the insert rod 211 are "convex" shaped to restrict the relative rotation of the insert sleeve 16 and the insert rod 211. The "convex" fit eliminates the gap of the key connection, transmits large torque, and ensures the stability of the faucet polishing process. The lifting frame 2 is fixedly installed on the outer bottom of the ring conveyor 1. A top rod 21 is movably installed at the top center of the lifting frame 2, and the top rod 21 is located below the faucet support rod 14. The lifting platform 22 is slidably installed inside the lifting frame 2. The top rod 21 is rotatably installed in the middle of the upper surface of the lifting platform 22. The top rod 21 is rotatably installed in the central bearing seat of the lifting platform 22 through a deep groove ball bearing or a flange bearing. The crank arm 24 is fixedly installed in the middle of the top rod 21. A rotating cylinder 25 is rotatably installed at one end of the crank arm 24 via a pin. A support seat 251 is rotatably installed at one end of the rotating cylinder 25 via a pin. The support seat 251 is fixedly installed on the upper surface of the lifting platform 22. The rotating cylinder 25 and the crank arm 24 are used to drive the top rod 21 to rotate. The top rod 21 drives the faucet bearing rod 14 and the faucet to rotate through the insert rod 211 and the insert sleeve 16, thereby causing the faucet column to be polished around. The lifting cylinder 23 is fixedly installed between the lower surface of the lifting platform 22 and the bottom inner wall of the lifting frame 2. The lifting cylinder 23 is used to drive the lifting platform 22 and the top rod 21 to move up and down to adjust the upper and lower surfaces of the faucet part of the faucet to contact the cotton cloth wheel 311 for polishing. A vertical polishing frame 3 is slidably mounted on the outer top of the annular conveyor 1. A vertical polishing wheel 31 is rotatably mounted inside the vertical polishing frame 3. Two vertical polishing wheels 31 are symmetrically distributed. Multiple cotton cloth wheels 311 are installed between the two vertical polishing wheels 31. The diameter of the multiple cotton cloth wheels 311 decreases from the outside to the inside. The multiple cotton cloth wheels 311 form a polishing mechanism with a "<" shaped cross section to adapt to the faucet part of the faucet. The cross section of the cotton cloth wheels 311 is a wave-shaped structure. The wave-shaped structure design improves the flexibility of the cotton cloth wheels 311. In addition, the wave-shaped structure design creates a small gap space between two adjacent sets of cotton cloth wheels 311, which makes it easy to throw out the polishing debris. The slide table 32 is fixedly installed at the bottom end of the vertical polishing frame 3. A lead screw sleeve 321 is fixedly installed at the bottom end of the slide table 32, and a transmission lead screw 322 is installed through the inside of the lead screw sleeve 321. The slide 324 is slidably mounted below the slide table 32 and fixedly mounted on the outside of the ring conveyor 1. A sliding motor 323 is fixedly mounted on one end of the slide 324, and the output end of the sliding motor 323 is fixedly connected to one end of the transmission screw 322. The slide 324 and the slide table 32 limit the horizontal sliding of the vertical polishing frame 3 so that multiple cotton cloth wheels 311 can complete the polishing of the faucet part. The support shaft 312 is rotatably installed inside the vertical polishing frame 3. The vertical polishing wheel 31 and the cotton cloth wheel 311 are both sleeved on the outside of the support shaft 312. Multiple mounting bolts 313 are installed through the middle of the support shaft 312, and the multiple mounting bolts 313 all pass through the vertical polishing wheel 31 and the cotton cloth wheel 311. A horizontal polishing frame 4 is fixedly installed at the top of the ring conveyor 1. A horizontal polishing wheel 41 is rotatably installed inside the horizontal polishing frame 4. The horizontal polishing wheel 41 is used to polish the column part of the faucet. Both ends of the outer wall of the horizontal polishing wheel 41 are provided with rounded corners 411. The rounded corners 411 are used to adapt to the polishing of the connection between the faucet post and the faucet part. The rounded corners 411 are specifically used to polish the concave transition surface at the connection between the post and the faucet.

[0023] When using a faucet surface polishing machine according to this embodiment, the operator places the faucet blank to be polished on the surface of the bearing tray 12 on the ring conveyor 1 in sequence. When placing the faucet blank, the faucet head part is adjusted to a perpendicular angle to the ring conveyor 1, and the bottom end of the faucet column part is sleeved on the top end of the rubber plug 15. The deformation of the rubber plug 15 is used to fix the faucet. After the faucet blank is fed, the ring conveyor chain 11 drives the carrying tray 12 and the faucet blank to move intermittently until the faucet blank moves to the top of the lifting frame 2. At this time, the faucet blank reaches the polishing station, and the ring conveyor chain 11 is in a state of intermittent stopping. After the faucet is in place, the lifting cylinder 23 is pushed out. The lifting cylinder 23 drives the lifting platform 22 to slide upward along the inner guide rail of the lifting frame 2. The lifting platform 22 drives the top rod 21 to slide upward. The insertion rod 211 at the top of the top rod 21 is inserted into the insertion sleeve 16 at the bottom of the faucet support rod 14 and locked through the "convex" cross section. As the top rod 21 moves upward, the faucet support rod 14 and the faucet blank are lifted upward. During the upward lifting process, the faucet blank first moves to the height of the vertical polishing wheel 31. At this time, the sliding motor 323 starts, driving the transmission screw 322 to rotate. The transmission screw 322 cooperates with the screw sleeve 321, causing the slide table 32 to slide along the slide base 324. The slide table 32 drives the vertical polishing frame 3 and the vertical polishing wheel 31 to slide towards the faucet. At this time, the cotton cloth wheel 311 on the inner side of the vertical polishing wheel 31 contacts the upper surface of the faucet part. The polishing structure with a cross-section of "<" formed by multiple cotton cloth wheels 311 covers the upper surface of the faucet part, and completes the polishing of the upper surface of the faucet under the action of rotational friction. After the upper surface of the faucet is polished, the rotating cylinder 25 is pushed out and drives the push rod 21 to rotate through the crank arm 24. The push rod 21 transmits the rotational motion to the faucet through the insert rod 211 and the insert sleeve 16, causing the faucet part to swing horizontally. The horizontally swinging faucet part contacts the inner wall of the two vertical polishing wheels 31 in turn to polish the curved surface of the end of the faucet part. Then the sliding motor 323 rotates in the opposite direction to move the vertical polishing wheels 31 away from the faucet blank. The lifting cylinder 23 continues to push out until the lower surface of the faucet part moves above the vertical polishing wheels 31. At this time, the above steps are repeated to complete the polishing of the lower surface of the faucet part. After the faucet's faucet section is polished, the lifting cylinder 23 continues to push upwards. At this point, the faucet's upright section comes into contact with the outer wall of the horizontal polishing wheel 41. The horizontal polishing wheel 41 rotates to polish the faucet's upright section. During this process, the lifting cylinder 23 operates in an intermittent pushing state, pushing out one thickness of the horizontal polishing wheel 41 each time to achieve continuous polishing of the faucet's upright section. After each push, the rotating cylinder 25 pushes out and drives the push rod 21 to rotate via the crank arm 24. The rod 21 transmits the rotational motion to the faucet through the insert rod 211 and the insert sleeve 16 to achieve uniform polishing of the faucet column. It should be noted that when polishing the connection between the faucet column and the faucet, the range of rotation of the rotating cylinder 25 is adjusted accordingly. While ensuring that the faucet column is fully polished, the faucet head is always misaligned with the horizontal polishing wheel 41. While polishing the column, the rounded corners 411 specially provided at both ends of the outer wall of the horizontal polishing wheel 41 can accurately fit the transition area at the connection between the polishing column and the faucet. After the faucet is polished, the rotating cylinder 25 and the lifting cylinder 23 are reset, and the top rod 21 and the faucet support rod 14 are lowered. At this time, the limiting block 131 at the bottom of the faucet support rod 14 falls into the limiting groove 13 on the upper surface of the support tray 12 again. As the top rod 21 continues to descend, the insert rod 211 at the top of the top rod 21 separates from the insert sleeve 16. At this time, the polished faucet moves to the unloading station along with the support tray 12 and the ring conveyor chain 11, and is unloaded by the operator or the robotic arm. It should be noted that the control actions of each structure in the technical solution of this embodiment are coordinated and controlled by the PLC control system. The PLC control system includes a PLC controller with a preset control program. Furthermore, in this embodiment, the vertical polishing wheel 31 and the horizontal polishing wheel 41 are each equipped with a separate motor for driving and a separate polishing agent replenishment system to ensure polishing quality. All of the above structures adopt technologies disclosed in the art.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A faucet surface polishing machine, characterized in that, include: A circular conveyor (1) is mounted on top of a circular conveyor chain (11). Multiple carrying trays (12) are fixedly mounted on the outer side of the circular conveyor chain (11). A faucet carrying rod (14) is installed through the middle of each of the multiple carrying trays (12). The lifting frame (2) is fixedly installed on the outer bottom of the ring conveyor (1). A top rod (21) is movably installed at the top center of the lifting frame (2), and the top rod (21) is located below the faucet support rod (14). A vertical polishing frame (3) is slidably mounted on the outer top of the ring conveyor (1). A vertical polishing wheel (31) is rotatably mounted inside the vertical polishing frame (3). The vertical polishing wheel (31) is configured as two symmetrically distributed wheels. A plurality of cotton cloth wheels (311) are installed between the two vertical polishing wheels (31). The diameter of the plurality of cotton cloth wheels (311) decreases from the outside to the inside. The plurality of cotton cloth wheels (311) form a polishing mechanism with a cross section of "<" to adapt to the faucet part of the faucet. A horizontal polishing frame (4) is fixedly installed at the top of the ring conveyor (1). A horizontal polishing wheel (41) is rotatably installed inside the horizontal polishing frame (4). The horizontal polishing wheel (41) is used to polish the column part of the faucet.

2. The faucet surface polishing machine according to claim 1, characterized in that, Also includes: A slide table (32) is fixedly installed at the bottom end of a vertical polishing frame (3). A lead screw sleeve (321) is fixedly installed at the bottom end of the slide table (32). A transmission lead screw (322) is installed through the inside of the lead screw sleeve (321). A slide block (324) is slidably mounted below a slide table (32) and fixedly mounted on the outside of a ring conveyor (1). A sliding motor (323) is fixedly mounted on one end of the slide block (324), and the output end of the sliding motor (323) is fixedly connected to one end of a transmission screw (322). The slide block (324) and the slide table (32) limit the horizontal sliding of the vertical polishing frame (3) so that multiple cotton cloth wheels (311) can complete the polishing of the faucet part.

3. A faucet surface polishing machine according to claim 1, characterized in that, Also includes: The insert (16) is fixedly installed at the bottom end of the faucet support rod (14); Insert rod (211) is fixedly installed at the top of top rod (21) and adapted to insert sleeve (16). The cross-section of insert sleeve (16) and insert rod (211) are both "convex" structure to restrict the relative rotation of insert sleeve (16) and insert rod (211).

4. A faucet surface polishing machine according to claim 3, characterized in that, Also includes: The lifting platform (22) is installed inside the lifting frame (2) and the top rod (21) is rotatably installed in the middle of the upper surface of the lifting platform (22). A crank arm (24) is fixedly installed in the middle of the top rod (21). A rotating cylinder (25) is rotatably installed at one end of the crank arm (24) via a pin. A support seat (251) is rotatably installed at one end of the rotating cylinder (25) via a pin. The support seat (251) is fixedly installed on the upper surface of the lifting platform (22). The rotating cylinder (25) and the crank arm (24) are used to drive the top rod (21) to rotate. The top rod (21) drives the faucet support rod (14) and the faucet to rotate through the insert rod (211) and the insert sleeve (16), thereby making the faucet column polished around.

5. A faucet surface polishing machine according to claim 4, characterized in that, Also includes: The lifting cylinder (23) is fixedly installed between the lower surface of the lifting platform (22) and the bottom inner wall of the lifting frame (2). The lifting cylinder (23) is used to drive the lifting platform (22) and the top rod (21) to move up and down to adjust the upper and lower surfaces of the faucet part to contact the cotton cloth wheel (311) for polishing.

6. A faucet surface polishing machine according to claim 1, characterized in that, Also includes: The limiting block (131) is fixedly installed on the top of the faucet support rod (14). The upper surface of the support tray (12) is provided with a limiting groove (13) that is compatible with the limiting block (131). The limiting block (131) and the limiting groove (13) are used to limit the rotation of the faucet during the movement of following the annular conveyor chain (11).

7. A faucet surface polishing machine according to claim 1, characterized in that, Also includes: The support shaft (312) is rotatably mounted inside the vertical polishing frame (3). The vertical polishing wheel (31) and the cotton cloth wheel (311) are both sleeved on the outside of the support shaft (312). Multiple mounting bolts (313) are installed through the middle of the support shaft (312), and the multiple mounting bolts (313) all pass through the vertical polishing wheel (31) and the cotton cloth wheel (311).

8. A faucet surface polishing machine according to claim 1, characterized in that, Also includes: The cross-section of the cotton cloth wheel (311) is a wave-shaped structure.

9. A faucet surface polishing machine according to claim 1, characterized in that, Also includes: Both ends of the outer wall of the horizontal polishing wheel (41) are provided with rounded corners (411), which are used to adapt to the polishing of the connection between the faucet post and the faucet part.

10. A faucet surface polishing machine according to claim 1, characterized in that, Also includes: A rubber plug (15) is fixedly installed on the top of the faucet support rod (14) and is adapted to the inner diameter of the bottom end of the faucet. The rubber plug (15) is used to insert into the bottom end of the faucet to achieve the support and positioning of the faucet.

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