Clock metal surface polishing device

Abstract

The invention discloses a clock metal surface polishing device and relates to the technical field of clock machining. A driving motor is mounted on a fixed vertical plate arranged on one side of a base, the output end of the driving motor is connected with a screw rod, the screw rod penetrates through the fixed vertical plate to be connected with the driving motor, and a moving ring is coaxially arranged on the screw rod; a rotating ring is coaxially arranged on the moving ring, the transmission rod is connected with the fixing assembly, and a polishing assembly is installed on a fixing vertical plate arranged on the other side of the base. The fixing assembly is in contact with the polishing assembly, the driving motor drives the screw rod to rotate, the screw rod rotates to drive the moving ring to move, and the moving ring moves to drive the fixing assembly to unfold or contract through the transmission rod. And when a polishing wheel is used for polishing the metal surface of the clock shell, the corners of the clock shell cannot be polished, so that the surface quality of the clock shell is reduced due to non-uniform polishing of the metal surface of the clock shell.

Description

Technical Field

[0001] The invention relates to the technical field of watch processing, and more specifically to a watch metal surface polishing device. Background Art

[0002] The metal surface of a watch is one of the main structural parts of the watch, and it plays an important role in protection and aesthetics, especially the surrounding area of ​​the watch case is extremely important for aesthetics. The gloss and roughness of the metal surface of the watch case are particularly important for aesthetics, and the roughness of the metal surface of the watch case also plays a decisive role in the user's experience. Polishing refers to the use of mechanical, chemical or electrochemical effects to reduce the roughness of the metal surface of the watch case, thereby obtaining a bright and flat surface. Polishing cannot improve the dimensional accuracy or geometric shape accuracy of the workpiece. It is mainly to change the metal surface of the watch case into a smooth surface or a mirror gloss.

[0003] In the prior art, mechanical polishing is mainly used to polish the metal surface of the watch case. Mechanical polishing is mainly carried out by manually holding a polishing machine or other electric tools. Before polishing, the metal surface of the watch case is first clamped by a clamping device to avoid shaking and deviation of the watch case during the polishing process. Then the operator uses a polishing machine with a polishing wheel and polishing paste to first perform preliminary polishing with a coarser abrasive, mainly to remove surface defects and roughness, and then uses a fine abrasive for fine polishing. At this time, the gloss of the metal surface of the watch case can be improved, and the experience of the watch user can be improved. However, due to the uneven level of workers, uneven polishing is prone to occur when polishing the metal surface of the watch case, resulting in a problem of reduced quality of the watch case. For this reason, a clamp is generally used to fix the watch case, and then the clamp is driven to rotate, and the rotating watch case is polished by a polishing wheel. However, due to the complex shape of the watch case, the polishing wheel cannot perform fine polishing on the corners of the watch case, which results in uneven polishing of the metal surface of the watch case and reduced quality of the metal surface of the watch case.

[0004] In view of the above situation, the present invention designs a watch metal surface polishing device to solve the above technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a device for polishing the metal surface of a watch, which solves the problem that when polishing the metal surface of a watch, due to the different shapes of the watch casing, the polishing wheel cannot polish the corners of the watch casing when polishing the metal surface of the watch casing, resulting in uneven polishing of the metal surface of the watch casing and reducing the surface quality of the watch casing.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a watch metal surface polishing device, used for polishing the metal parts on the sides of the watch case, comprising a base, wherein the base is symmetrically provided with movable grooves, and telescopic parts are provided in the movable grooves, and the output ends of the telescopic parts are connected to fixed vertical plates, and the fixed vertical plates are arranged in the movable grooves on both sides of the base; a driving motor is installed on the fixed vertical plates arranged on one side of the base, and a spiral rod is connected to the output end of the driving motor, the spiral rod passes through the fixed vertical plate and is connected to the driving motor, a moving ring is coaxially provided on the spiral rod, and the moving ring is provided with an internal thread meshing with the spiral rod, and a rotating ring is coaxially provided on the moving ring, and the rotating ring The dynamic ring is rotatably connected to the mobile ring, and a plurality of transmission rods are arranged in a circular array around the rotating ring, and the transmission rods are connected to the fixed assembly, and a polishing assembly is installed on the fixed vertical plate arranged on the other side of the base; when the metal parts on the sides of the watch case are polished, the telescopic member drives the fixed vertical plates on both sides to move toward the center of the base, and the fixed assembly contacts the polishing assembly, and the spiral rod is driven to rotate by the driving motor, and the rotation of the spiral rod drives the mobile ring to move, and the movement of the mobile ring drives the fixed assembly to expand or contract through the transmission rod, thereby fixing the watch case. After the watch case is fixed, the fixed assembly is driven to rotate by the polishing assembly, thereby completing the polishing of the metal on the sides of the watch case.

[0007] Preferably, the fixing assembly includes a fixing sleeve, a fixing ring, a connecting rod and a support plate. The fixing sleeve is slidably arranged on the spiral rod, and the fixing sleeve is coaxially arranged with the spiral rod. Fixing rings are arranged on both sides of the fixing sleeve. A plurality of connecting rods are arranged in a circular array on the fixing ring. A plurality of support plates are arranged in a circular array around the fixing ring. The support plates are connected to the fixing ring through connecting rods.

[0008] Preferably, one end of the support plate is connected to the moving ring, and the top end of the support plate is an arc-shaped structure, and the reciprocating motion of the moving ring drives the support plate to expand or contract on the fixed sleeve.

[0009] Preferably, the polishing assembly includes an output motor, a rotating shaft, a fixed frame, a telescopic mechanism, a driven shaft, a polishing roller and a transmission mechanism, the output motor is arranged on a fixed vertical plate on the other side of the base, the output end of the output motor is connected to the rotating shaft, the rotating shaft passes through the fixed vertical plate, fixed frames are symmetrically arranged on both sides of the rotating shaft, and the fixed frames are rotatably connected to the rotating shaft, a telescopic mechanism is arranged in the fixed frame, one side of the telescopic mechanism is connected to a driven shaft, the other side of the driven shaft away from the telescopic mechanism is connected to the polishing roller, the driven shaft is connected to the rotating shaft through the transmission mechanism, the rotation of the rotating shaft drives the driven shaft to rotate through the transmission mechanism, thereby driving the polishing roller to rotate by the rotation of the driven shaft.

[0010] Preferably, a cross protrusion is provided on the fixed sleeve, and a cross groove is provided on the rotating shaft. When the metal surface of the watch case is polished, the cross protrusion cooperates with the cross groove, and the rotating shaft connected to the output end of the output motor drives the fixed sleeve to rotate.

[0011] Preferably, the telescopic mechanism includes a compression spring and a support rod, the fixed frame is coaxially arranged with the rotating shaft, and the rotating shaft can rotate in the inner circle of the fixed frame, the fixed frame is triangular in shape, and a mounting groove is opened at each end of the fixed frame, a compression spring is arranged in the mounting groove, one end of the compression spring is fixedly connected to the bottom end of the mounting groove, and the other end of the compression spring is connected to the support rod, and one side of the support rod is rotatably connected to a driven shaft.

[0012] Preferably, the driven shaft is rotatably connected to a polishing roller, the length of which is greater than the length of the supporting plate, and rough particles for grinding the periphery of the watch housing are adhered to the surface of the polishing roller.

[0013] Preferably, the transmission mechanism includes a driving wheel, a driven wheel, a transmission belt, a transmission wheel and a connecting belt. The driving wheel is fixedly arranged in the middle position of the rotating shaft, and a driven wheel is arranged above the driving wheel. The driven wheel is arranged on any driven shaft, and the driven wheel and the driven shaft are arranged coaxially. The driving wheel is connected to the driven wheel through a transmission belt, and transmission wheels are arranged on the driven shafts, and multiple transmission wheels are connected by connecting belts.

[0014] Preferably, the transmission belt and the connecting belt are both provided with tension wheels, the tension wheels are both arranged on the inner sides of the transmission belt and the connecting belt, and the adjustment part of the tension wheel is connected to the rotating shaft.

[0015] Beneficial effects of the present invention:

[0016] 1. The present invention provides a device for polishing the metal surface of a watch, which pushes the fixed vertical plates on both sides of the base to move toward the middle position of the base through a telescopic member, and drives the spiral rod to rotate through a driving motor, and drives the moving ring to move on the spiral rod during the rotation. At this time, the transmission rod is driven by the rotating ring to expand or contract the fixing component, so that the watch case is fixed by the contraction and expansion of the fixing component. After the watch case is fixed, the metal surface of the watch case is polished by the polishing component arranged on the other side of the base, so that the position of the watch case can be fixed by the fixing component, and the watch case can be prevented from shaking and falling off during the polishing process. At the same time, the fixing component can fix multiple watch cases, so that the device can polish a large number of watches at the same time, thereby improving the efficiency of the device in polishing the metal surface of the watch case.

[0017] 2. The present invention provides a device for polishing the metal surface of a watch. The device has a fixed component. When the polishing component polishes the metal surface of a watch case, the polishing component will apply pressure to the metal surface of the watch. Since the fixed component fixes the watch case from the inside out, the fixed component will not interfere with the operation of the polishing component and can clamp the watch case more stably, thereby avoiding the phenomenon of deviation of the watch case during processing.

[0018] 3. The present invention provides a device for polishing the metal surface of a watch, which processes the metal surface around the watch case through a polishing component, and utilizes a telescopic mechanism to cooperate with a transmission mechanism to realize the self-rotation of the polishing roller and the polishing roller can adapt to the diameter of the watch case. When the polishing roller processes the metal surface of the watch case, the polishing roller can perform polishing along all sides of the watch case, thereby achieving fine polishing of the arc corners around the watch case, further avoiding the problem of the inability to perform fine polishing at the corners of the watch case, resulting in a decrease in the quality of its metal surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall structure of the device of the present invention when polishing the metal surface around the watch housing;

[0021] Figure 3 It is a schematic diagram of the overall structure of the fixing assembly of the present invention;

[0022] Figure 4 It is a cross-sectional view of the overall structure of the fixing assembly of the present invention;

[0023] Figure 5 It is a schematic diagram of the overall structure of the polishing assembly of the present invention;

[0024] Figure 6 It is a cross-sectional view of the overall structure of the polishing assembly of the present invention.

[0025] Reference numerals:

[0026] 1. Base; 11. Moving groove; 12. Fixed vertical plate; 2. Telescopic member; 3. Driving motor; 4. Screw rod; 5. Moving ring; 51. Rotating ring; 6. Transmission rod; 7. Fixed assembly; 71. Fixed sleeve; 711. Cross protrusion; 72. Fixed ring; 73. Connecting rod; 74. Support plate; 741. Arc structure; 8. Polishing assembly; 81. Output motor; 82. Rotating shaft; 821. Cross groove; 83. Fixed frame; 84. Telescopic mechanism; 841. Compression spring; 842. Support rod; 85. Driven shaft; 86. Polishing roller; 87. Transmission mechanism; 871. Driving wheel; 872. Driven wheel; 873. Transmission belt; 874. Transmission wheel; 875. Connecting belt; 876. Tensioning wheel. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0028] refer to Figure 1 , Figure 2 , Figure 3A watch metal surface polishing device is used for polishing the metal parts on the sides of the watch case, including a base 1, a movable groove 11 is symmetrically arranged on the base 1, and a telescopic member 2 is arranged in the movable groove 11, and the output end of the telescopic member 2 is connected to a fixed vertical plate 12, and the fixed vertical plate 12 is arranged in the movable grooves 11 on both sides of the base 1; a driving motor 3 is installed on the fixed vertical plate 12 arranged on one side of the base 1, and a spiral rod 4 is connected to the output end of the driving motor 3, and the spiral rod 4 penetrates the fixed vertical plate 12 and is connected to the driving motor 3, a moving ring 5 is coaxially arranged on the spiral rod 4, and the moving ring 5 is provided with an internal thread meshing with the spiral rod 4, and a rotating ring 51 is coaxially arranged on the moving ring 5, and the rotating ring 51 is meshed with the moving ring 5 The ring 5 is rotatably connected, and a plurality of transmission rods 6 are arranged in a circular array around the rotating ring 51, and the transmission rods 6 are connected to the fixed assembly 7. A polishing assembly 8 is installed on the fixed vertical plate 12 arranged on the other side of the base 1; when the metal parts on the sides of the watch case are polished, the telescopic member 2 drives the fixed vertical plates 12 on both sides to move toward the center of the base 1, and the fixed assembly 7 contacts with the polishing assembly 8, and drives the spiral rod 4 to rotate through the driving motor 3, and the rotation of the spiral rod 4 drives the moving ring 5 to move, and the movement of the moving ring 5 drives the fixed assembly 7 to expand or contract through the transmission rod 6, so as to fix the watch case. After the watch case is fixed, the fixed assembly 7 is driven to rotate by the polishing assembly 8, thereby completing the polishing of the metal on the sides of the watch case.

[0029] During the working process, when it is necessary to polish the metal surface around the watch case, the operator first drives the telescopic member 2 to move one side of the moving groove 11 of the fixed vertical plate 12 on both sides of the base 1 through the telescopic member 2. At this time, the fixed vertical plate 12 on one side is kept at the farthest distance from the fixed vertical plate 12 on the other side. The operator installs the watch case in a unified direction. In order to ensure the consistent direction of the watch case, the spiral rod 4 is driven to rotate by the driving motor 3. The rotation of the spiral rod 4 drives the moving ring 5 to move on the spiral rod 4. At this time, the moving ring 5 drives the transmission to swing so that the fixed component 7 is aligned with the fixed vertical plate 12 on the other side. The watch case is fixed. After the position of the watch case is fixed, the telescopic parts 2 arranged on the base 1 are used to push the fixed vertical plates 12 on both sides to move toward the middle of the base 1. At the same time, the fixing component 7 is in contact with the polishing component 8. After the watch case is fixed, the fixing component 7 is driven to rotate by the polishing component 8. During the rotation of the fixing component 7, the watch case can be driven to rotate. At this time, the watch case can be polished by the polishing component 8. At the same time, the corners around the watch case can be polished by the polishing component 8, thereby ensuring the surface quality of the metal surface around the watch case.

[0030] The fixing assembly 7 includes a fixing sleeve 71, a fixing ring 72, a connecting rod 73 and a supporting plate 74. The fixing sleeve 71 is slidably arranged on the spiral rod 4, and the fixing sleeve 71 is coaxially arranged with the spiral rod 4. Fixing rings 72 are arranged on both sides of the fixing sleeve 71. A plurality of connecting rods 73 are arranged in a circular array on the fixing ring 72. A plurality of supporting plates 74 are arranged in a circular array around the fixing ring 72. The supporting plates 74 are connected to the fixing ring 72 through the connecting rod 73.

[0031] When the fixing ring 71 is in the state of being moved, the fixing ring 71 is pressed against the fixing plate 74 and the fixing ring 73 is pressed against the fixing plate 74 to prevent the fixing ring 71 from being stuck.

[0032] One end of the support plate 74 is connected to the movable ring 5, and the top of the support plate 74 is an arc structure 741. The reciprocating motion of the movable ring 5 drives the support plate 74 to expand or contract on the fixed sleeve 71. The support plate 74 with the arc structure 741 can better fit the inner wall of the watch case to avoid damage to the inner wall of the watch case after fixation, resulting in damage to the watch case and reduced product quality of the watch case. At the same time, when the support plate 74 drives the watch case to rotate, it is connected to the support plate 74 through the transmission rods 6 connected around the rotating ring 51, and the rotating ring 51 can rotate relative to the movable ring 5 to avoid interference and jamming of the fixed sleeve 71.

[0033] The polishing assembly 8 includes an output motor 81, a rotating shaft 82, a fixed frame 83, a telescopic mechanism 84, a driven shaft 85, a polishing roller 86 and a transmission mechanism 87. The output motor 81 is arranged on the fixed vertical plate 12 on the other side of the base 1. The output end of the output motor 81 is connected with the rotating shaft 82, and the rotating shaft 82 is arranged through the fixed vertical plate 12. Fixed frames 83 are symmetrically arranged on both sides of the rotating shaft 82, and the fixed frames 83 are rotatably connected to the rotating shaft 82. A telescopic mechanism 84 is arranged in the fixed frame 83, and a driven shaft 85 is connected to one side of the telescopic mechanism 84. The driven shaft 85 is connected to the polishing roller 86 on the other side away from the telescopic mechanism 84. The driven shaft 85 is connected to the rotating shaft 82 through the transmission mechanism 87. The rotation of the rotating shaft 82 drives the driven shaft 85 to rotate through the transmission mechanism 87, so that the polishing roller 86 is driven to rotate by the rotation of the driven shaft 85.

[0034] During the working process, when the fixing component 7 is in contact with the polishing component 8, the polishing roller 86 can adapt to the surroundings of the watch case through the telescopic mechanism 84. At this time, the rotating shaft 82 is driven to rotate by the output motor 81. Since the rotating shaft 82 is rotatably connected to the fixing frame 83, the rotation of the rotating shaft 82 drives the driven shaft 85 to rotate through the transmission mechanism 87. The rotation of the driven shaft 85 drives the polishing roller 86 coaxially arranged with the driven shaft 85 to rotate. Since a plurality of driven shafts 85 are arranged in an annular array on the circumferential surface of the rotating shaft 82, when the driven shaft 85 rotates, the driven shaft 85 drives the remaining driven shafts 85 to rotate through the transmission mechanism 87. When all the driven shafts 85 rotate, the driven shaft 85 can drive the correspondingly connected polishing roller 86 to rotate. The polishing roller 86 rotates in cooperation with the rotating shaft 82 to drive the watch case to rotate, so that it can fit the surroundings of the watch case for fine polishing, thereby ensuring that the metal surface around the watch case is evenly polished.

[0035] The fixed sleeve 71 is provided with a cross protrusion 711, and the rotating shaft 82 is provided with a cross groove 821. When the metal surface of the watch case is polished, the cross protrusion 711 cooperates with the cross groove 821, and the rotating shaft 82 connected to the output end of the output motor 81 drives the fixed sleeve 71 to rotate. Through such a setting, the cross protrusion 711 cooperates with the setting of the cross groove 821 to ensure that the rotating shaft 82 drives the fixed sleeve 71 to rotate stably, and avoids the fixed sleeve 71 shaking when the rotating shaft 82 drives the fixed sleeve 71 to rotate, thereby improving the stability of the movement of the entire device and avoiding the phenomenon of getting stuck or being unable to move.

[0036] The telescopic mechanism 84 includes a compression spring 841 and a support rod 842. The fixed frame 83 is coaxially arranged with the rotating shaft 82, and the rotating shaft 82 can rotate in the inner circle of the fixed frame 83. The fixed frame 83 is triangular in shape, and a mounting groove is opened at each end of the fixed frame 83. A compression spring 841 is arranged in the mounting groove, one end of the compression spring 841 is fixedly connected to the bottom end of the mounting groove, and the other end of the compression spring 841 is connected to the support rod 842, and one side of the support rod 842 is rotatably connected to the driven shaft 85.

[0037] During the working process, since the polishing roller 86 is fixedly connected to the driven shaft 85, when the fixed vertical plates 12 on both sides move toward the middle, when the polishing roller 86 encounters a protrusion on the surface of the watch case, the polishing roller 86 will move toward the outside of the watch case. When the polishing roller 86 moves toward the outside of the watch case, it drives the coaxially arranged driven shaft 85 to move toward the watch case. At this time, the support rod 842 connected to one end of the driven shaft 85 moves toward the outside of the mounting groove provided on the fixed frame 83, and the support rod 842 can pull the compression spring 841 for stretching, so that the polishing roller 86 fits the surface of the watch case, thereby completing the adaptation of the polishing roller 86 to the surrounding surfaces of the watch case. When the watch case is rotating, when the polishing roller 86 encounters a protrusion on the surrounding surface of the watch case, the polishing roller 86 pulls the compression spring 841 through the support rod 842 to adapt to the surrounding of the watch case. When the polishing roller 86 encounters a concave surface around the watch case, the polishing roller 86 adapts to the surrounding of the watch case through the pulling force of the compression spring 841, so that the polishing roller 86 fits the surrounding of the watch case for polishing.

[0038] The driven shaft 85 is rotatably connected to a polishing roller 86 on one side, and the length of the polishing roller 86 is greater than the length of the support plate 74. Rough particles for grinding around the watch case are adhered to the surface of the polishing roller 86. Through such an arrangement, when the watch cases are polished in large quantities, the polishing roller 86 can uniformly polish all the watch cases. At the same time, the rough particles arranged on the surface of the polishing roller 86 can grind some protrusions around the watch, thereby achieving uniform polishing around the watch case and avoiding uneven polishing of the metal surface around the watch case, which reduces the quality of the metal surface of the watch case.

[0039] The transmission mechanism 87 includes a driving wheel 871, a driven wheel 872, a transmission belt 873, a transmission wheel 874 and a connecting belt 875. The driving wheel 871 is fixedly arranged in the middle position of the rotating shaft 82, and a driven wheel 872 is arranged above the driving wheel 871. The driven wheel 872 is arranged on any driven shaft 85, and the driven wheel 872 is coaxially arranged with the driven shaft 85. The driving wheel 871 is connected to the driven wheel 872 through a transmission belt 873. Transmission wheels 874 are arranged on the driven shaft 85, and multiple transmission wheels 874 are connected by connecting belts 875.

[0040] During operation, when the rotating shaft 82 rotates, the rotating shaft 82 can drive the driving wheel 871 to rotate synchronously through the driving wheel 871 set in the middle of the rotating shaft 82, and the driving wheel 871 drives the driven wheel 872 to rotate through the transmission belt 873. Since the driven wheel 872 is fixedly connected to the driven shaft 85, the driven wheel 872 can drive the driven shaft 85 to rotate. Since all the driven shafts 85 are fixedly provided with a transmission wheel 874, when the driven shaft 85 rotates, the transmission wheel 874 can rotate synchronously. The rotation of the transmission wheel 874 drives the remaining driven shafts 85 to rotate through the connecting belt 875. Since a polishing roller 86 is connected to one side of the driven shaft 85, the rotation of the driven shaft 85 drives the polishing roller 86 to rotate, so that the four sides of the watch case can be finely polished to ensure that the quality of the metal surface around the watch case meets the processing requirements.

[0041] The transmission belt 873 and the connecting belt 875 are both provided with tensioning wheels 876, and the tensioning wheels 876 are both arranged on the inner sides of the transmission belt 873 and the connecting belt, and the adjustment part of the tensioning wheel 876 is connected to the rotating shaft 82. Through such a setting, the tensioning wheel 876 will not affect the overall movement of the device, and the tensioning wheel 876 can ensure that the transmission belt 873 and the connecting belt 875 will not be too loose or too tight, thereby improving the stability of the overall operation of the device and avoiding jamming.

[0042] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A watch metal surface polishing device, used for polishing the metal parts on the sides of the watch case, characterized in that: The invention comprises a base (1), wherein the base (1) is symmetrically provided with movable grooves (11), and a telescopic member (2) is arranged in the movable grooves (11), and the output end of the telescopic member (2) is connected to a fixed vertical plate (12), and the fixed vertical plate (12) is arranged in the movable grooves (11) on both sides of the base (1); A driving motor (3) is mounted on a fixed vertical plate (12) arranged on one side of the base (1), and a spiral rod (4) is connected to the output end of the driving motor (3), the spiral rod (4) penetrates the fixed vertical plate (12) and is connected to the driving motor (3), a moving ring (5) is coaxially arranged on the spiral rod (4), and the moving ring (5) is provided with an internal thread meshing with the spiral rod (4), a rotating ring (51) is coaxially arranged on the moving ring (5), and the rotating ring (51) is rotatably connected to the moving ring (5), a plurality of transmission rods (6) are arranged in an annular array around the rotating ring (51), and the transmission rods (6) are connected to the fixed assembly (7), and a polishing assembly (8) is mounted on the fixed vertical plate (12) arranged on the other side of the base (1); When the metal parts on the sides of the watch case are being ground and polished, the telescopic member (2) drives the fixed vertical plates (12) on both sides to move toward the center of the base (1), and the fixed assembly (7) contacts the polishing assembly (8), and the spiral rod (4) is driven to rotate by the driving motor (3), and the rotation of the spiral rod (4) drives the moving ring (5) to move, and the movement of the moving ring (5) drives the fixed assembly (7) to expand or contract through the transmission rod (6), thereby fixing the watch case. After the watch case is fixed, the fixed assembly (7) is driven to rotate by the polishing assembly (8), thereby completing the grinding and polishing of the metal parts on the sides of the watch case.

2. A watch metal surface polishing device according to claim 1, characterized in that: The fixing assembly (7) comprises a fixing sleeve (71), a fixing ring (72), a connecting rod (73) and a supporting plate (74); the fixing sleeve (71) is slidably arranged on the spiral rod (4), and the fixing sleeve (71) and the spiral rod (4) are arranged coaxially; fixing rings (72) are arranged on both sides of the fixing sleeve (71); a plurality of connecting rods (73) are arranged in a circular array on the fixing ring (72); a plurality of supporting plates (74) are arranged in an annular array around the fixing ring (72); and the supporting plates (74) are connected to the fixing ring (72) via the connecting rods (73).

3. A watch metal surface polishing device according to claim 2, characterized in that: One end of the support plate (74) is connected to the moving ring (5), and the top end of the support plate (74) is an arc-shaped structure (741). The reciprocating motion of the moving ring (5) drives the support plate (74) to expand or contract on the fixed sleeve (71).

4. A watch metal surface polishing device according to claim 1, characterized in that: The polishing assembly (8) comprises an output motor (81), a rotating shaft (82), a fixed frame (83), a telescopic mechanism (84), a driven shaft (85), a polishing roller (86) and a transmission mechanism (87); the output motor (81) is arranged on a fixed vertical plate (12) on the other side of the base (1); the output end of the output motor (81) is connected to a rotating shaft (82); the rotating shaft (82) penetrates the fixed vertical plate (12); fixed frames (83) are symmetrically arranged on both sides of the rotating shaft (82); and the fixed frames (83) and the rotating shaft (82) are symmetrically arranged on both sides of the rotating shaft (82); The shaft (82) is rotatably connected, a telescopic mechanism (84) is arranged in the fixed frame (83), a driven shaft (85) is connected to one side of the telescopic mechanism (84), and a polishing roller (86) is connected to the other side of the driven shaft (85) away from the telescopic mechanism (84), the driven shaft (85) is connected to the rotating shaft (82) through a transmission mechanism (87), the rotating shaft (82) rotates to drive the driven shaft (85) to rotate through the transmission mechanism (87), and the polishing roller (86) is driven to rotate by the rotation of the driven shaft (85).

5. The device for polishing a metal surface of a watch according to claim 3, characterized in that: The fixed sleeve (71) is provided with a cross protrusion (711), and the rotating shaft (82) is provided with a cross groove (821). When the metal surface of the watch case is polished, the cross protrusion (711) and the cross groove (821) are matched, and the rotating shaft (82) connected to the output end of the output motor (81) drives the fixed sleeve (71) to rotate.

6. A watch metal surface polishing device according to claim 4, characterized in that: The telescopic mechanism (84) comprises a compression spring (841) and a support rod (842); the fixed frame (83) is coaxially arranged with the rotating shaft (82), and the rotating shaft (82) can rotate in the inner circle of the fixed frame (83); the fixed frame (83) is triangular in shape, and each end of the fixed frame (83) is provided with a mounting groove, a compression spring (841) is arranged in the mounting groove, one end of the compression spring (841) is fixedly connected to the bottom end of the mounting groove, and the other end of the compression spring (841) is connected to the support rod (842), and one side of the support rod (842) is rotatably connected to a driven shaft (85).

7. A watch metal surface polishing device according to claim 6, characterized in that: A polishing roller (86) is rotatably connected to one side of the driven shaft (85), the length of the polishing roller (86) is greater than the length of the supporting plate (74), and rough particles for grinding the periphery of the watch housing are adhered to the surface of the polishing roller (86).

8. The timepiece metal surface polishing device according to claim 4, characterized in that: The transmission mechanism (87) comprises a driving wheel (871), a driven wheel (872), a transmission belt (873), a transmission wheel (874) and a connecting belt (875); the driving wheel (871) is fixedly arranged at the middle position of the rotating shaft (82); a driven wheel (872) is arranged above the driving wheel (871); the driven wheel (872) is arranged on any driven shaft (85); the driven wheel (872) and the driven shaft (85) are arranged coaxially; the driving wheel (871) is connected to the driven wheel (872) via a transmission belt (873); transmission wheels (874) are arranged on each of the driven shafts (85); and a plurality of transmission wheels (874) are connected via a connecting belt (875).

9. The timepiece metal surface polishing device according to claim 6, characterized in that: The transmission belt (873) and the connecting belt (875) are both provided with tension wheels (876), and the tension wheels (876) are both arranged on the inner sides of the transmission belt (873) and the connecting belt, and the adjustment part of the tension wheel (876) is connected to the rotating shaft (82).

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