A flexible polishing device suitable for curved watch cases

Abstract

The utility model discloses a kind of flexible polishing device suitable for curved surface watchcase, belong to precision parts polishing technical field, including bottom plate and the polishing bin being set on it. The main drive motor of polishing bin side is provided with the drive watchcase rotation, its output shaft is equipped with the special fixture of quick replacement, can stably install and clamp different models of curved surface watchcase. Polishing bin top is connected with a inverted U-shaped polishing adjusting frame body by hydraulic assembly, the vice drive motor of the frame body is set and drives a flexible polishing head. This polishing head is composed of internal elastic matrix and outer flexible polishing layer, can self-adaptingly adhere to the complex curved surface of watchcase. Entire polishing process is carried out in closed polishing bin, and the generated waste is dropped into bottom dust collecting drawer through conical flow guide hole, convenient to clean. The present application realizes the efficient, high-quality automatic polishing of curved surface watchcase, with the advantages of strong universality, easy operation and simple maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of precision parts polishing technology, specifically relating to a flexible polishing device suitable for curved surface casings. Background Technology

[0002] Polishing is a processing method that uses mechanical, chemical, or electrochemical processes to reduce the surface roughness of a workpiece, thereby obtaining a bright and smooth surface. It involves using polishing tools and abrasive particles or other polishing media to refine the surface of a workpiece.

[0003] In existing technologies, polishing of curved watch cases typically relies heavily on manual operation or automated equipment using specialized rigid fixtures. Manual polishing is not only inefficient and costly, but its quality also heavily depends on the operator's experience and skill, leading to poor product consistency and a low yield rate. Traditional automated equipment, with its rigid polishing tools or workpiece fixtures, struggles to adapt to the complex and varied curved contours of watch cases, often resulting in uneven pressure distribution during polishing. This can lead to localized over- or under-polishing, failing to meet the requirements for high-quality curved surface polishing. Furthermore, existing equipment often lacks efficient waste collection and cleaning systems, making it difficult to quickly remove polishing debris. This affects the cleanliness of the working environment and may cause secondary contamination of the polishing quality. Additionally, the equipment's versatility is generally poor; changing to different watch case models requires cumbersome adjustments or even replacing the entire fixture set, resulting in long changeover times and severely restricting production flexibility.

[0004] Therefore, the industry urgently needs a flexible polishing device that can automatically adapt to curved surfaces, provide uniform polishing, be easy to operate and maintain, in order to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a flexible polishing device suitable for curved watch cases, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flexible polishing device suitable for curved surface casings, comprising a base plate and a polishing adjustment assembly. The lower end of the base plate is provided with an anti-slip pad, and the upper middle part of the base plate is provided with a bottom compartment. A waste drawer is provided at the front end of the bottom compartment, and a polishing chamber is fixedly connected to the upper end of the bottom compartment. Doors are hinged to both the front and rear sides of the polishing chamber, and a first drive motor of a drive assembly is fixedly connected to the lower middle part of one side plate of the polishing chamber. The first output shaft of the first drive motor passes through the polishing chamber, and an mounting assembly is provided on its outer surface. The polishing... A first limiting groove is provided in the middle of the outer surface of the two side plates of the chamber, and a second limiting groove is provided in the middle of the first limiting groove, which penetrates the interior of the polishing chamber. A hydraulic component is fixedly connected to the upper end of the polishing chamber. The polishing adjustment component includes an inverted U-shaped frame. The lower surface of the upper end of the frame is fixedly connected to the upper end of the hydraulic shaft of the hydraulic component. A second drive motor is fixedly connected to the middle of the outer surface of one side plate of the frame. The other end of the second output shaft of the second drive motor extends through the second limiting groove into the polishing chamber and is covered with the polishing component. It is further limited by symmetrical limiting rings.

[0007] It should be noted in the solution that the connection surface between the bottom chamber and the polishing chamber has regular guide holes, and the guide holes are all conical with a larger diameter at the top and a smaller diameter at the bottom. Furthermore, the bottom chamber has baffles with an inner arc shape fixedly connected to both the front and rear sides at the top.

[0008] It is worth noting that each of the doors has an observation window made of transparent material in the middle.

[0009] Furthermore, it should be noted that the first output shaft of the first drive motor is fixedly connected to the upper and lower ends of both sides inside the polishing chamber with clamping plates. Each clamping plate has a fixing hole in the middle. The mounting assembly includes symmetrical semi-circular fixing parts. The semi-circular fixing parts can fit and cover the outer surface of the first output shaft. Each fixing part has a connecting block fixedly connected to the upper and lower ends of both sides. Each adjacent connecting block can clamp the corresponding clamping plate and be fixed to each other by bolts. The outer surface of the fixing part has several mounting grooves. Each mounting groove has a corresponding positioning shaft for fixing the watch case. The positioning shafts of the mounting grooves on the outer surfaces of different fixing parts are different and correspond to different watch cases.

[0010] In a preferred embodiment, a limiting protrusion is fixedly connected to the upper middle part of the opposite side of the two side plates of the frame. The limiting protrusion is slidably connected to the first limiting groove, and the cross-section of the limiting protrusion and the first limiting groove are both trapezoidal.

[0011] In a preferred embodiment, each polishing assembly includes an elastomer located on the outer surface of the second output shaft, and a flexible polishing layer covering the outer surface of the elastomer. The elastomer is a rubber block, a silicone block, or a polyurethane foam block, and the flexible polishing layer is made of wool felt, soft leather, or an elastic polymer material containing abrasive particles.

[0012] In a preferred embodiment, at least two sets of auxiliary components are provided between the upper end of the frame and the upper end of the polishing chamber. Each set of auxiliary components includes a first fixed shaft, a second fixed shaft, and an auxiliary spring sleeved on the outer surface of the first fixed shaft and the second fixed shaft. The sliding block fixedly connected to the lower end of the first fixed shaft is slidably connected to the sliding groove provided at the upper end of the second fixed shaft.

[0013] Compared with the prior art, the flexible polishing device for curved surface cases provided by this utility model has at least the following beneficial effects:

[0014] (1) This flexible polishing device, through its replaceable fastener design, can flexibly adapt to various curved watch cases of different shapes and sizes. The fastener adopts a semi-circular structure, which can tightly wrap around the drive shaft and be firmly fixed by connecting blocks and bolts, ensuring that the watch case remains stable and does not shift during the polishing process. At the same time, the polishing component uses elastic materials such as rubber or silicone as the base, covered with a flexible polishing layer such as wool felt or elastic polymer containing abrasive particles. This design allows the polishing tool to automatically conform to the curved contour of the watch case, apply uniform pressure, and avoid local over-grinding or under-grinding, thereby significantly improving the polishing quality and consistency. In addition, the drive motor has an adjustable speed, further optimizing the polishing force and efficiency, and is particularly suitable for processing watch cases with complex curved surfaces, reducing the need for manual adjustment and improving the level of production automation.

[0015] (2) The device integrates a highly efficient waste collection system and user-friendly operation features. A tapered guide hole at the bottom of the polishing chamber guides polishing waste smoothly into the waste drawer inside the bottom chamber, facilitating centralized cleaning, maintaining a clean working environment, and reducing pollution and cleaning time. A transparent observation window on the door allows the operator to monitor the polishing progress in real time without interrupting the process, improving operational efficiency and safety. A hydraulic component drives the polishing adjustment component up and down, combined with the stabilizing effect of an auxiliary spring, to achieve precise adjustment of polishing pressure, ensuring adaptability to surfaces of different hardness. The overall structure is compact, and anti-slip pads enhance stability, enabling the device to maintain stable operation even during high-speed polishing, reducing vibration and noise, extending equipment life, and simultaneously reducing operating difficulty and maintenance costs. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of the present invention;

[0017] Figure 2This is a schematic diagram of the polishing adjustment component of this utility model;

[0018] Figure 3 This is a schematic diagram of the installation component structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the polishing component structure of this utility model.

[0020] In the diagram: 1. Base plate; 101. Anti-slip mat; 2. Bottom compartment; 201. Guide hole; 202. Baffle; 3. Waste drawer; 4. Polishing chamber; 401. First limiting groove; 402. Second limiting groove; 5. Drive assembly; 501. First drive motor; 502. First output shaft; 503. Clamping plate; 504. Fixing hole; 6. Polishing adjustment assembly; 601. Frame; 602. Limiting protrusion; 603. Second drive motor; 604. Second output shaft; 60 41. Limiting ring; 7. Hydraulic assembly; 8. Auxiliary assembly; 801. First fixed shaft; 802. Sliding block; 803. Second fixed shaft; 804. Sliding groove; 805. Auxiliary spring; 9. Door body; 901. Observation window; 10. Polishing assembly; 1001. Elastomer; 1002. Flexible polishing layer; 11. Mounting assembly; 1101. Fixing element; 1102. Connecting block; 1103. Bolt; 1104. Mounting groove; 1105. Positioning shaft. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments.

[0022] Please see Figure 1-4 This utility model provides a flexible polishing device suitable for curved surface casings, comprising: a base plate 1 and a polishing adjustment assembly 6. The lower end of the base plate 1 is provided with an anti-slip pad 101, and the upper middle part of the base plate 1 is provided with a bottom chamber 2. A waste drawer 3 is provided at the front end of the bottom chamber 2, and a polishing chamber 4 is fixedly connected to the upper end of the bottom chamber 2. Doors 9 are hinged to both the front and rear sides of the polishing chamber 4. A first drive motor 501 of a drive assembly 5 is fixedly connected to the lower middle part of one side plate of the polishing chamber 4. The first output shaft 502 of the first drive motor 501 passes through the polishing chamber 4, and an installation assembly 11 is provided on its outer surface. A first limiting position is provided at the middle of the outer surface of both side plates of the polishing chamber 4. The first limiting groove 401 has a second limiting groove 402 that penetrates the interior of the polishing chamber 4. The upper end of the polishing chamber 4 is fixedly connected to the hydraulic component 7. The polishing adjustment component 6 includes an inverted U-shaped frame 601. The lower surface of the upper end of the frame 601 is fixedly connected to the upper end of the hydraulic shaft of the hydraulic component 7. The outer surface of one side plate of the frame 601 is fixedly connected to the second drive motor 603. The other end of the second output shaft 604 of the second drive motor 603 extends through the second limiting groove 402 into the polishing chamber 4. The outer surface is covered with the polishing component 10 and further limited by the symmetrical limiting ring 6041.

[0023] Further as Figure 1 As shown, it is worth noting that the connection surface between the bottom chamber 2 and the polishing chamber 4 has regular guide holes 201. The guide holes 201 are all tapered with a larger diameter at the top and a smaller diameter at the bottom. Furthermore, the front and rear sides of the upper end of the bottom chamber 2 are fixedly connected with baffles 202 with an inner arc shape. The tapered guide holes 201 combined with the arc baffles 202 can efficiently guide polishing waste into the waste drawer 3 of the bottom chamber 2, preventing waste from accumulating or splashing in the polishing chamber 4, keeping the working area clean, and facilitating collection and disposal.

[0024] Further as Figure 1 As shown, it is worth noting that each door 9 has an observation window 901 made of transparent material in the middle. The transparent observation window 901 on the door 9 allows the operator to observe the internal working status and polishing effect in real time without opening the door or interrupting the polishing process, which improves the safety of operation and the convenience of monitoring.

[0025] Further as Figure 2 and Figure 3 As shown, it is worth noting that the first output shaft 502 of the first drive motor 501 is located inside the polishing chamber 4, and both its upper and lower ends are fixedly connected to clamping plates 503. Each clamping plate 503 has a fixing hole 504 in its center. The mounting assembly 11 includes symmetrical semi-circular fixing members 1101. These semi-circular fixing members 1101 can fit and cover the outer surface of the first output shaft 502. Both sides of the fixing members 1101 are fixedly connected to connecting blocks 1102 at their upper and lower ends. Adjacent connecting blocks 1102 can clamp corresponding clamping plates 503 and are fixed to each other by bolts 1103. The outer surface of component 1101 is provided with several mounting grooves 1104, and each mounting groove 1104 is provided with a corresponding positioning shaft 1105 for fixing the watch case. The mounting grooves 1104 and positioning shafts 1105 provided on the outer surface of different fasteners 1101 are different and correspond to different watch cases. By using replaceable fasteners 1101 with different positioning shafts 1105, and by using connecting blocks 1102, clamping plates 503 and bolts 1103 for quick clamping, the mounting assembly 11 can flexibly and reliably fix various models of curved watch cases, greatly improving the versatility and changeover efficiency of the device.

[0026] The working process of this solution is as follows: When this device is working, firstly, a matching mounting component 11 is selected according to the model of the curved surface of the watch case to be polished. The semi-circular fixing part 1101 is wrapped around the first output shaft 502 of the first drive motor 501, the clamping plate 503 is held by the connecting block 1102 and tightened with bolts 1103, thereby stably mounting the watch case on the positioning shaft 1105. The first drive motor 501 is started, driving the first output shaft 502 and the watch case to rotate at a uniform speed.

[0027] Subsequently, the hydraulic assembly 7 is activated, driving the inverted U-shaped frame 601 of the polishing adjustment assembly 6 to move downwards. The trapezoidal limiting protrusions 602 on both sides of the frame 601 slide along the first limiting groove 401 on the polishing chamber 4, ensuring smooth movement. At the same time, the sliding block 802 of the auxiliary assembly 8 moves within the sliding groove 804, and the auxiliary spring 805 provides cushioning and stability, allowing the frame 601 to descend smoothly. The second drive motor 603 on the frame 601 is activated, driving its second output shaft 604 and the polishing assembly 10 encased within it to rotate at high speed. The polishing assembly 10 consists of an internal elastomer 1001 and an external flexible polishing layer 1002. When it comes into contact with the rotating curved surface of the watch case, it can adapt to its complex contours and apply uniform and gentle pressure for flexible polishing. The debris generated during the entire polishing process falls into the waste drawer 3 of the bottom chamber 2 through the conical guide hole 201. The operator can monitor the operation process in real time through the observation window 901 on the door 9.

[0028] As can be seen from the above working process, the conical guide hole 201 combined with the arc-shaped baffle 202 can efficiently guide polishing waste into the waste drawer 3 of the bottom chamber 2, preventing waste from accumulating or splashing in the polishing chamber 4, keeping the working area clean, and facilitating collection and disposal. The transparent observation window 901 set on the door 9 allows the operator to observe the internal working status and polishing effect in real time without opening the door or interrupting the polishing process, improving the safety of operation and the convenience of monitoring. Through replaceable fasteners 1101 with different positioning shafts 1105, and quick clamping using connecting blocks 1102, clamping plates 503 and bolts 1103, the mounting assembly 11 can flexibly and reliably fix various models of curved surface cases, greatly improving the versatility and changeover efficiency of the device.

[0029] Further as Figure 2 As shown, it is worth noting that the upper middle part of the opposite side surface of the two side plates of the frame 601 is fixedly connected to a limiting protrusion 602. The limiting protrusion 602 is slidably connected to the first limiting groove 401. Both the limiting protrusion 602 and the first limiting groove 401 have trapezoidal cross sections. The trapezoidal cross section of the limiting protrusion 602 and the first limiting groove 401 cooperate to ensure that the frame 601 can only perform vertical linear movement under the drive of the hydraulic component 7. This effectively prevents the frame from deflecting or shaking during the movement, thereby ensuring the stability and accuracy of the polishing process.

[0030] Further as Figure 2 and Figure 4As shown, it is worth noting that each polishing component 10 includes an elastomer 1001 located on the outer surface of the second output shaft 604, and a flexible polishing layer 1002 covering the outer surface of the elastomer 1001. The elastomer 1001 is a rubber block, silicone block, or polyurethane foam block, and the flexible polishing layer 1002 is made of wool felt, soft leather, or an elastic polymer material containing abrasive particles. The polishing component 10 is composed of the elastomer 1001 and the flexible polishing layer 1002. This combination gives the polishing tool excellent flexibility and self-adaptability, enabling it to closely conform to various complex curved contours and achieve uniform and soft flexible polishing, avoiding scratches on the watch case surface.

[0031] Further as Figure 2 As shown, it is worth noting that at least two sets of auxiliary components 8 are provided between the upper end of the frame 601 and the upper end of the polishing chamber 4. Each set of auxiliary components 8 includes a first fixed shaft 801, a second fixed shaft 803, and an auxiliary spring 805 sleeved on the outer surface of the first fixed shaft 801 and the second fixed shaft 803. The sliding block 802 fixedly connected to the lower end of the first fixed shaft 801 is slidably connected to the sliding groove 804 provided at the upper end of the second fixed shaft 803. The auxiliary spring 805 inside the auxiliary component 8 between the frame 601 and the polishing chamber 4 can provide stable buffering and auxiliary support force, and work together with the hydraulic component 7 to ensure that the lifting and lowering movement of the frame 601 is more stable and controllable, and to reduce impact and vibration.

[0032] In summary: The trapezoidal limiting protrusion 602, in conjunction with the first limiting groove 401, ensures that the frame 601 can only move vertically and linearly under the drive of the hydraulic component 7, effectively preventing the frame from deflecting or swaying during movement, thus guaranteeing the stability and precision of the polishing process. The polishing component 10 is composed of an elastic body 1001 and a flexible polishing layer 1002. This combination gives the polishing tool excellent flexibility and self-adaptability, enabling it to closely conform to various complex curved surface contours, achieving uniform and gentle flexible polishing and avoiding scratches on the watch case surface. The auxiliary component 8, located between the frame 601 and the polishing chamber 4, has an auxiliary spring 805 inside that provides stable buffering and auxiliary support. Working in conjunction with the hydraulic component 7, it ensures that the lifting and lowering movement of the frame 601 is more stable and controllable, reducing impact and vibration.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flexible polishing device suitable for curved surface casings, comprising a base plate (1) and a polishing adjustment assembly (6), characterized in that: The bottom plate (1) is provided with an anti-slip pad (101) at its lower end, and a bottom compartment (2) is provided in the middle of the upper end of the bottom plate (1). A waste drawer (3) is provided at the front end of the bottom compartment (2), and a polishing compartment (4) is fixedly connected to the upper end of the bottom compartment (2). Doors (9) are hinged to both the front and rear sides of the polishing compartment (4), and a first drive motor (501) of a drive assembly (5) is fixedly connected to the middle of the lower end of one side plate of the polishing compartment (4). The first output shaft (502) of the first drive motor (501) passes through the polishing compartment (4), and an installation assembly (11) is provided on its outer surface. A first limiting groove (401) is provided in the middle of the outer surface of both side plates of the polishing compartment (4), and the first limiting groove (401) is provided in the middle of the outer surface of both side plates of the polishing compartment (4). 1) A second limiting groove (402) is provided in the middle of the polishing chamber (4) and a hydraulic component (7) is fixedly connected to the upper end of the polishing chamber (4); the polishing adjustment component (6) includes an inverted U-shaped frame (601), the lower surface of the upper end of the frame (601) is fixedly connected to the upper end of the hydraulic shaft of the hydraulic component (7), and a second drive motor (603) is fixedly connected to the middle of the outer surface of one side plate of the frame (601). The other end of the second output shaft (604) of the second drive motor (603) extends through the second limiting groove (402) into the polishing chamber (4), and the outer surface is covered with a polishing component (10), and is further limited by a symmetrical limiting ring (6041).

2. The flexible polishing device for curved surface casings according to claim 1, characterized in that: The bottom chamber (2) and the polishing chamber (4) are connected by regular guide holes (201). The guide holes (201) are all cone-shaped with a larger diameter at the top and a smaller diameter at the bottom. The bottom chamber (2) is fixedly connected to the front and rear sides of the upper end with baffles (202) with an inner arc shape.

3. The flexible polishing device suitable for curved surface casings according to claim 1, characterized in that: Each door (9) has an observation window (901) made of transparent material in the middle.

4. The flexible polishing device suitable for curved surface casings according to claim 1, characterized in that: The first output shaft (502) of the first drive motor (501) is located inside the polishing chamber (4) and both its upper and lower ends are fixedly connected to clamping plates (503). Each clamping plate (503) has a fixing hole (504) in the middle. The mounting assembly (11) includes symmetrical semi-circular fixing parts (1101). The semi-circular fixing parts (1101) can fit and cover the outer surface of the first output shaft (502). Both the upper and lower ends of each side of the fixing parts (1101) are fixedly connected to connecting plates. The connecting blocks (1102) are adjacent to each other and can clamp the corresponding card plates (503) and are fixed to each other by bolts (1103). The outer surface of the fixing member (1101) is provided with several mounting grooves (1104). Each mounting groove (1104) is provided with a corresponding positioning shaft (1105) for fixing the watch case. The positioning shafts (1105) of the mounting grooves (1104) provided on the outer surface of different fixing members (1101) are different and correspond to different watch cases.

5. The flexible polishing device suitable for curved surface casings according to claim 1, characterized in that: Limiting protrusions (602) are fixedly connected to the upper middle part of the opposite side of the frame (601). The limiting protrusions (602) are slidably connected to the first limiting groove (401), and the cross sections of the limiting protrusions (602) and the first limiting groove (401) are both trapezoidal.

6. The flexible polishing device for curved surface casings according to claim 1, characterized in that: Each polishing assembly (10) includes an elastomer (1001) located on the outer surface of the second output shaft (604) and a flexible polishing layer (1002) covering the outer surface of the elastomer (1001). The elastomer (1001) is a rubber block, a silicone block or a polyurethane foam block, and the flexible polishing layer (1002) is made of wool felt, soft leather or an elastic polymer material containing abrasive particles.

7. The flexible polishing device for curved surface casings according to claim 1, characterized in that: At least two sets of auxiliary components (8) are provided between the upper end of the frame (601) and the upper end of the polishing chamber (4). Each set of auxiliary components (8) includes a first fixed shaft (801), a second fixed shaft (803), and an auxiliary spring (805) sleeved on the outer surface of the first fixed shaft (801) and the second fixed shaft (803). The sliding block (802) fixedly connected to the lower end of the first fixed shaft (801) is fitted and slidably connected to the sliding groove (804) provided at the upper end of the second fixed shaft (803).

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