A clamp for processing a sealing ring

Abstract

The utility model discloses a clamp for sealing ring processing, including drive board, drive board is installed with driving part, and the outside circumference of drive board is installed with a plurality of arc strips, and the arc strip can be installed in drive board slidingly, and adjacent arc strips are connected to different output ends of driving part respectively, and the outside of arc strip is provided with arc ring groove shape mounting groove, still including half ring pipe, and the inboard of half ring pipe is provided with arc ring groove shape recess, and two half ring pipes are arranged in mirror image symmetry, and a plurality of negative pressure holes are arranged in recess, and the outside of half ring pipe is installed with connecting pipe, and connecting pipe is connected with negative pressure pump. The utility model discloses through setting up arc strip array and half ring pipe, fixes in and out of sealing ring respectively, and it is convenient to polish sealing ring. The arc strip array and half ring pipe of circular ring reduce the non -circular deformation of sealing ring in the process of clamp fixation.

Description

Technical Field

[0001] This utility model belongs to the field of sealing ring clamping technology, and relates to a clamping fixture for processing sealing rings. Background Technology

[0002] A sealing ring is a component used to prevent the leakage of liquids or gases, and it is usually made of elastic materials. In the manufacturing process of sealing rings, some O-rings are produced by methods such as injection molding. After production, there is a parting line between the inner and outer rings of the sealing ring.

[0003] In some applications where sealing requirements are high, the surface of the sealing ring is subject to high standards, and the parting line area needs to be polished. However, the sealing ring is made of a relatively soft elastic material, which is not easy to fix during the polishing process. It is usually fixed by a multi-jaw chuck. During the fixing process, the sealing ring cannot maintain its round shape, making it difficult to perform the polishing operation. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a fixture for processing sealing rings, which effectively solves the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A fixture for machining sealing rings, comprising:

[0007] A driver board, wherein a driver component is mounted on the driver board;

[0008] Arc-shaped strips, multiple arc-shaped strips are arranged in a circumferential array, each arc-shaped strip can be slidably mounted on the drive plate, and adjacent arc-shaped strips are respectively connected to different output ends of the drive component;

[0009] The mounting groove is an arc-shaped annular groove formed on the outer side of the arc-shaped strip;

[0010] A semi-ring tube, wherein an arc-shaped annular groove is provided on the inner side of the semi-ring tube, and two semi-ring tubes are arranged in a mirror-symmetrical manner;

[0011] A plurality of negative pressure holes are formed in the groove, and a connecting pipe is installed on the outside of the semi-annular pipe, the connecting pipe being connected to a negative pressure pump.

[0012] Optionally, two drive boards are provided, which are arranged in parallel and fixedly connected, and adjacent arc-shaped strips are slidably installed on different drive boards.

[0013] Optionally, the driving component includes a sliding rod fixedly connected to the arc-shaped strip, the driving plate has a sliding groove for slidably mounting the sliding rod, a two-link rod is rotatably mounted on the end of the sliding rod away from the arc-shaped strip, multiple two-link rods are fixedly connected to the same rotating disk at the ends away from the arc-shaped strip, the rotating disk is rotatably mounted on the corresponding driving plate, the rotating disk is connected to a driving motor, and the two-link rod includes two connecting rods rotatably connected at both ends.

[0014] Optionally, the rotating disks on the two drive plates are a first rotating disk and a second rotating disk. The first rotating disk has a plurality of arc-shaped holes arranged in a circumferential array. The second rotating disk is fixedly connected to the drive plate by a drive pin, which is slidably installed in the arc-shaped holes. The second rotating disk is connected to the drive motor.

[0015] Optionally, the sliding rod is a rectangular rod, and the sliding groove is a rectangular hole or groove.

[0016] Optionally, the central angle between the cross-sections of the mounting groove and the recess is less than 180°.

[0017] Optionally, the inner edges at both ends of the arc-shaped strip are chamfered, and the chamfer extends to the outer surface of the arc-shaped strip.

[0018] Optionally, the mounting groove and recess are provided with rounded chamfers on both sides.

[0019] Compared with the prior art, this utility model has the following advantages: by setting an arc-shaped strip array and a semi-circular tube to fix the inner and outer sides of the sealing ring respectively, it is convenient to grind the sealing ring. The circular arc-shaped strip array and semi-circular tube reduce the non-circular deformation of the sealing ring during the clamping process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0022] Reference numerals: 1. Driving component; 11. Sliding rod; 12. Sliding groove; 13. Two-link rod; 14. Rotating disk; 141. First turntable; 142. Second turntable; 15. Arc-shaped hole; 16. Driving pin; 2. Driving plate; 3. Arc-shaped strip; 31. Mounting groove; 41. Semi-ring pipe; 42. Negative pressure hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 and Figure 2 This utility model discloses a fixture for processing sealing rings, including a drive plate 2, on which a drive component 1 is mounted. Multiple arc-shaped strips 3 are arranged in a circular array on the outer side of the drive plate 2. The arc-shaped strips 3 can be slidably mounted on the drive plate 2. Adjacent arc-shaped strips 3 are respectively connected to different output ends of the drive component 1. An arc-shaped annular groove 31 is opened on the outer side of the arc-shaped strips 3. The fixture also includes a semi-annular tube 41. An arc-shaped annular groove is provided on the inner side of the semi-annular tube 41. Two semi-annular tubes 41 are arranged in a mirror symmetrical manner. Multiple negative pressure holes 42 are opened in the groove. A connecting pipe is installed on the outer side of the semi-annular tube 41. The connecting pipe is connected to a negative pressure pump.

[0025] Specifically, the parting line during sealing ring grinding is located on the inner and outer sides of the sealing ring. By setting up an array of arc-shaped strips 3, the ring formed by the array of arc-shaped strips 3 is supported inside the sealing ring. The arc-shaped strips 3 are connected to different output ends of the drive component 1, causing adjacent arc-shaped strips 3 to slide and contract or open in a staggered manner, thus positioning the sealing ring. After the inner ring grinding is completed, the two semi-annular tubes 41 are located on the outer side of the sealing ring. A negative pressure pump is used to suction the sealing ring to the inner side of the semi-annular tubes 41, completing the inner ring grinding.

[0026] In this way, by setting up the arc-shaped strip array 3 and the semi-ring tube 41, the inner and outer sides of the sealing ring are fixed respectively, which facilitates the grinding of the sealing ring. The circular arc-shaped strip array 3 on the semi-ring tube 41 reduces the non-circular deformation of the sealing ring during the clamping process.

[0027] In some feasible configurations, the drive plate 2 is circular, the drive element 1 can be multiple linear push rods, and six arc-shaped bars 3 are provided. Each arc-shaped bar 3 is connected to an independent linear push rod, allowing adjacent arc-shaped bars 3 to retract asynchronously, thus avoiding interference during retraction. For ease of fixing, the outer diameter of the ring formed by the array of arc-shaped bars 3 can be slightly larger than the inner diameter of the sealing ring. The outer side of the arc-shaped bars 3 can be made of a material with high friction, such as rubber. To facilitate grinding after clamping, the central angle between the mounting groove 31 and the groove is less than 180°. To reduce wear on the sealing ring during clamping, rounded chamfers are provided on both sides of the mounting groove 31 and the groove.

[0028] In practical use, the drive plate 2 and the semi-ring tube 41 are installed on the required automated machinery. For example, the drive plate 2 is installed on the robotic arm and works with the drive component 1 to automatically install and remove the sealing ring. The two semi-ring tubes 41 are installed on the linear drive and move towards or away from each other through the linear drive.

[0029] As a specific embodiment of the fixture for processing sealing rings provided in the application, there are two drive plates 2, which are arranged in parallel and fixedly connected, and adjacent arc-shaped strips 3 can be slidably installed on different drive plates 2.

[0030] Overall, by setting two drive plates 2, the mutual interference that the arc strip 3 may cause during the retraction process is further reduced.

[0031] Furthermore, the driving component 1 includes a sliding rod 11 fixedly connected to the arc-shaped bar 3. The driving plate 2 has a sliding groove 12 for slidably mounting the sliding rod 11. A two-link 13 is rotatably mounted on the end of the sliding rod 11 away from the arc-shaped bar 3. Multiple two-links 13 are fixedly connected to the same rotating disk 14 at the end away from the arc-shaped bar 3. The rotating disk 14 is rotatably mounted on the corresponding driving plate 2. The rotating disk 14 is connected to a drive motor. The two-link 13 includes two connecting rods rotatably connected at both ends.

[0032] It should be understood that by setting up the rotating disk 14 and the two-link 13 structure, multiple non-adjacent arc bars 3 can be driven by the same drive motor, thereby reducing the number of drive components.

[0033] Furthermore, the rotating disks 14 on the two drive plates 2 are the first rotating disk 141 and the second rotating disk 142, respectively. The first rotating disk 141 has a plurality of arc-shaped holes 15 arranged in a circular array. The second rotating disk 142 is fixedly connected to the drive plate 2 by a drive pin 16. The drive pin 16 is slidably installed in the arc-shaped hole 15. The second rotating disk 142 is connected to the drive motor.

[0034] It should be understood that by setting the arc-shaped hole 15 and the drive pin 16, adjacent arc-shaped bars 3 can be driven by the same drive motor, which further reduces the number of drive components and reduces the difficulty of controlling the drive components.

[0035] In some feasible configurations, a support column is provided near the outer side of one of the drive plates 2, with a threaded hole inside the support column. A rectangular sliding groove 12 is located on the end face of the drive plate 2. A rectangular sliding rod 11 is provided, with its first end fixedly connected to the arc-shaped strip 3 and its second end slidably installed in the sliding groove 12 and rotatably connected to one end of a connecting rod 13. When the rotating disk 14 rotates, the driving connecting rod 13 drives the sliding rod 11 to slide. A circular plate is fixedly connected to the central shaft of the second turntable 142 after passing through the drive plate 2. Multiple drive pins 16 are arranged in a circumferential array on the circular plate, and the drive pins 16 are inserted into the arc-shaped holes 15. A circular plate is fixedly connected to the side of the drive plate 2 where the second turntable 142 is located, away from the other drive plate, and a drive motor is mounted on the circular plate.

[0036] When the second turntable 142 rotates, the arc-shaped strip 3 connected to the second turntable 142 retracts. When the drive pin 16 slides to the end of the arc-shaped hole 15, the second turntable 142 drives the first turntable 141 to rotate, causing the other arc-shaped strip 3 to retract, thereby causing the sealing ring to disengage. When installing the sealing ring, the retracted part of the arc-shaped strip 3 is placed into the sealing ring, and the second turntable 142 drives the arc-shaped strip 3 to expand outward. When the arc-shaped strip 3 connected to the second turntable 142 expands outward to another arc-shaped strip 3, it pushes the remaining arc-shaped strips 3 to expand outward until the array of arc-shaped strips 3 expands outward into a ring shape, supporting the sealing ring.

[0037] 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 fixture for machining sealing rings, characterized in that, include: A drive board (2), on which a drive component (1) is mounted; Arc-shaped strips (3), multiple arc-shaped strips (3) are arranged in a circumferential array, and each arc-shaped strip (3) can be slidably installed on the drive plate (2). Adjacent arc-shaped strips (3) are respectively connected to different output ends of the drive unit (1); Mounting groove (31), wherein the mounting groove (31) is an arc-shaped annular groove opened on the outside of the arc-shaped strip (3); A semi-circular tube (41) is provided with an arc-shaped annular groove on the inner side of the semi-circular tube (41), and the two semi-circular tubes (41) are arranged in a mirror symmetrical manner; Negative pressure holes (42) are provided in the groove. A connecting pipe is installed on the outside of the semi-annular pipe (41) and the connecting pipe is connected to the negative pressure pump.

2. The fixture for machining a sealing ring according to claim 1, characterized in that: There are two drive plates (2), which are arranged in parallel and fixedly connected. The adjacent arc strips (3) can be slidably installed on different drive plates (2).

3. The fixture for machining a sealing ring according to claim 2, characterized in that: The driving component (1) includes a sliding rod (11) fixedly connected to the arc-shaped strip (3). The driving plate (2) has a sliding groove (12) on which the sliding rod (11) can be slidably installed. A two-link (13) is rotatably installed at the end of the sliding rod (11) away from the arc-shaped strip (3). Multiple two-links (13) are fixedly connected to the same rotating disk (14) at the end away from the arc-shaped strip (3). The rotating disk (14) is rotatably installed on the corresponding driving plate (2). The rotating disk (14) is connected to a driving motor. The two-link (13) includes two connecting rods rotatably connected at both ends.

4. The fixture for machining a sealing ring according to claim 3, characterized in that: The rotating disks (14) on the two drive plates (2) are a first rotating disk (141) and a second rotating disk (142). The first rotating disk (141) has a plurality of arc-shaped holes (15) arranged in a circular array. The second rotating disk (142) is fixedly connected to the drive plate (2) by a drive pin (16). The drive pin (16) is slidably installed in the arc-shaped hole (15). The second rotating disk (142) is connected to the drive motor.

5. A fixture for machining a sealing ring according to claim 3, characterized in that: The sliding rod (11) is a rectangular rod, and the sliding groove (12) is a rectangular hole groove.

6. A fixture for machining a sealing ring according to claim 1, characterized in that: The central angle between the mounting groove (31) and the groove is less than 180°.

7. A fixture for machining a sealing ring according to claim 1, characterized in that: The inner edges of both ends of the arc-shaped strip (3) are chamfered, and the chamfer extends to the outer surface of the arc-shaped strip (3).

8. A fixture for machining a sealing ring according to claim 1, characterized in that: The mounting groove (31) and the groove are provided with rounded chamfers on both sides.

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