Sealing ring stretching device

Abstract

When the sealing ring stretching device works, a part of a sealing ring is sleeved on a first fixing part, a part of the sealing ring is sleeved on a moving part, and a driving mechanism drives the moving part to gradually move towards the direction far away from the first fixing part, so that the sealing ring is gradually tensioned and stretched to reach the required size, and the utilization rate of products is effectively improved. When the size of the sealing ring is large and the stroke of the moving part is not enough to stretch the sealing ring, a second fixing part can be installed on the workbench, and the sealing ring is partially sleeved on the second fixing part, so that the stretchable range of the moving part can be improved in the limited stroke, certainly, the device can also be used for measuring the tensile property of the sealing ring, and the device is suitable for popularization and application. The overall structure is simple and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the field of sealing ring manufacturing, in particular to a sealing ring stretching device. Background Art

[0002] Rubber sealing rings have advantages such as reliable structure and performance. They are widely used in hydraulic systems of mechanical equipment and become important parts for reciprocating parts and rotating shaft seals. In particular, the field of aviation equipment has very strict requirements on the appearance size and performance of rubber sealing rings in hydraulic systems. After the sealing rings are processed and formed, the size needs to be measured. Good products with qualified size will enter the next process, and unqualified defective products will be directly discarded, resulting in low product utilization and waste of resources. Utility Model Content

[0003] The main purpose of the utility model is to provide a sealing ring stretching device, aiming to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model proposes a sealing ring stretching device, including a workbench, on which a first fixing member and two second fixing members are detachably fixed, respectively, for contacting the local inner wall of the sealing ring, the two second fixing members are opposite to each other at left and right intervals, the first fixing member is located at a position between the two second fixing members corresponding to the workbench, the workbench is also movably provided with a moving member, a vertical columnar member for contacting the local inner wall of the sealing ring is provided on the top of the moving member, the moving member is opposite to the first fixed platform in front and back intervals, and the moving member can move relative to the workbench between a position where the columnar member is close to the first fixing member and a position away from the first fixing member, and a driving mechanism is also provided to drive the moving member to perform the above-mentioned movement.

[0005] The technical solution of the utility model is that a first fixing member and two second fixing members which are spaced opposite to each other on the left and right sides are detachably fixed on the workbench, the first fixing member is located between the two second fixing members corresponding to the workbench, the first fixing member and the second fixing member can contact with the local inner wall of the sealing ring, a moving member with a columnar member on the top is also movably arranged on the workbench, the columnar member can contact with the local inner wall of the sealing ring, the moving member is spaced opposite to the first fixing table in front and back, and the moving member can be driven by a driving mechanism to move between the position where the columnar member is close to the first fixing member and the position away from the first fixing member, when working, a part of the sealing ring is sleeved on the first fixing member, and a part is sleeved on the moving member, and the driving mechanism drives the moving member to gradually move in the direction away from the first fixing member, so that the sealing ring is gradually tightened and stretched to the required size, effectively improving the product utilization rate and reducing the waste of resources, when the sealing ring is large in size and the stroke of the moving member is not enough to stretch it, the second fixing member can be installed on the workbench, and the part of the sealing ring is sleeved on the second fixing member, so that the moving member can increase the stretchable range within a limited stroke, of course, the utility model can also be used to measure the tensile performance of the sealing ring, the overall structure is simple, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is a three-dimensional diagram from the first angle of the present invention;

[0007] Figure 2 This is a stereoscopic view of the utility model from a second angle. DETAILED DESCRIPTION

[0008] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0009] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0010] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0011] The utility model provides a sealing ring stretching device.

[0012] In the embodiment of the utility model, Figures 1 to 2As shown, the sealing ring stretching device includes a workbench 1, and the workbench 1 is detachably fixed with a first fixing member 2 and two second fixing members 3, which are used to contact the local inner wall of the sealing ring. The two second fixing members 3 are opposite to each other at left and right intervals. The first fixing member 2 is located at a position between the two second fixing members 3 corresponding to the workbench 1. The workbench 1 is also movably provided with a moving member 4, and a vertical columnar member 41 for contacting the local inner wall of the sealing ring is provided on the top of the moving member 4. The moving member 4 is opposite to the first fixed platform in front and back intervals, and the moving member 4 can move relative to the workbench 1 between a position where the columnar member 41 is close to the first fixing member 2 and a position away from it. A driving mechanism is also provided to drive the moving member 4 to perform the said movement.

[0013] The technical solution of the utility model is that a first fixing member and two second fixing members which are spaced opposite to each other on the left and right sides are detachably fixed on the workbench, the first fixing member is located between the two second fixing members corresponding to the workbench, the first fixing member and the second fixing member can contact with the local inner wall of the sealing ring, a moving member with a columnar member on the top is also movably arranged on the workbench, the columnar member can contact with the local inner wall of the sealing ring, the moving member is spaced opposite to the first fixing table in front and back, and the moving member can be driven by a driving mechanism to move between the position where the columnar member is close to the first fixing member and the position away from the first fixing member, when working, a part of the sealing ring is sleeved on the first fixing member, and a part is sleeved on the moving member, and the driving mechanism drives the moving member to gradually move in the direction away from the first fixing member, so that the sealing ring is gradually tightened and stretched to the required size, effectively improving the product utilization rate and reducing the waste of resources, when the sealing ring is large in size and the stroke of the moving member is not enough to stretch it, the second fixing member can be installed on the workbench, and the part of the sealing ring is sleeved on the second fixing member, so that the moving member can increase the stretchable range within a limited stroke, of course, the utility model can also be used to measure the tensile performance of the sealing ring, the overall structure is simple, and the operation is convenient.

[0014] It can be understood that the sealing ring is made of elastic material and can be stretched by the utility model to deform within a certain range. If this state is maintained for a period of time, the sealing ring can maintain the size after deformation to meet the required size.

[0015] Specifically, the first fixing member 2 includes a first fixed shaft 21 and a first wheel body 22. The workbench 1 is provided with a first insertion hole 11. The lower end of the first fixed shaft 21 is formed with a first plug block that can be inserted into the first insertion hole 11. The first fixed shaft 21 is detachably fixed to the workbench 1 through the plug-in cooperation between the first insertion hole 11 and the first plug block. The first wheel body 22 is movably sleeved on the first fixed shaft 21, and the peripheral wall of the first wheel body 22 is used to contact the local inner wall of the sealing ring.

[0016] Specifically, there are multiple first sockets 11 , which are linearly spaced apart in a direction away from the moving member 4 , and the lower end of the first fixed shaft 21 is connected to one of the first sockets 11 .

[0017] Specifically, a scale 6 is fixed at a position on one side of the workbench 1 corresponding to the moving part 4 to measure the moving distance of the moving part 4 .

[0018] Specifically, the second fixing member 3 includes a second fixed shaft 31 and a second wheel body 32. The workbench 1 is provided with a second plug hole 12. The lower end of the second fixed shaft 31 is formed with a second plug block that can be inserted into the second plug hole 12. The second fixed shaft 31 is detachably fixed to the workbench 1 through the plug-in cooperation between the second plug hole 12 and the second plug block. The second wheel body 32 is movably sleeved on the second fixed shaft 31, and the peripheral wall of the second wheel body 32 is used to contact the local inner wall of the sealing ring.

[0019] Specifically, there are multiple second sockets 12 , which are linearly spaced apart in a direction away from the moving member 4 , and the lower end of the second fixed shaft 31 is connected to one of the second sockets 12 .

[0020] Specifically, a plurality of rollers 7 are pivotally mounted on the bottom of the workbench 1 .

[0021] Specifically, the diameter of the first wheel body 22 is larger than the diameter of the second wheel body 32 .

[0022] Specifically, the driving mechanism includes a servo motor 51 and a screw 52. The workbench 1 is fixedly installed with a guide rail 13. The bottom wall of the movable member 4 is provided with a slide groove opposite to the guide rail 13. The movable member 4 is installed on the workbench 1 through the cooperation of the slide groove and the guide rail 13, and can perform the movement along the guide rail 13. The servo motor 51 is fixedly installed at a position below the movable member 4 inside the workbench 1. One end of the screw 52 is fixedly connected to the rotating end of the servo motor 51. A avoidance hole 14 with a suitable length of the screw 52 is provided at the position of the workbench 1 corresponding to the screw 52. An extension portion 42 that can pass through the avoidance hole 14 from top to bottom is formed at the bottom of the movable member 4. The extension portion 42 is formed with a screw hole for screwing with the screw 52. During the rotation of the screw 52 with the rotating end of the servo motor 51, the extension portion 42 can be forced to drive the movable member 4 to move through the screw hole.

[0023] Specifically, the workbench 1 is further provided with a control panel 8 electrically connected to the driving mechanism for controlling the start and stop of the driving mechanism.

[0024] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A sealing ring stretching device, characterized in that: The invention comprises a workbench (1), wherein the workbench (1) is detachably fixed with a first fixing member (2) and two second fixing members (3) for contacting a local inner wall of a sealing ring, the two second fixing members (3) are spaced apart from each other on the left and right, the first fixing member (2) is located at a position between the two second fixing members (3) on the workbench (1), and the workbench (1) is also movably provided with a moving member (4), the top of the moving member (4) is provided with a vertical columnar member (41) for contacting a local inner wall of the sealing ring, the moving member (4) is spaced apart from the first fixing member in front and back, and the moving member (4) can move relative to the workbench (1) between a position where the columnar member (41) is close to the first fixing member (2) and a position where it is far away from the first fixing member (2), and a driving mechanism is further provided for driving the moving member (4) to perform the above-mentioned movement.

2. The sealing ring stretching device according to claim 1, characterized in that: The first fixing member (2) comprises a first fixing shaft (21) and a first wheel body (22); the workbench (1) is provided with a first insertion hole (11); a first plug block which can be inserted into the first insertion hole (11) is formed at the lower end of the first fixing shaft (21); the first fixing shaft (21) is detachably fixed to the workbench (1) through the plug-in cooperation between the first insertion hole (11) and the first plug block; the first wheel body (22) is movably sleeved on the first fixing shaft (21); and the peripheral wall of the first wheel body (22) is used to contact the local inner wall of the sealing ring.

3. The sealing ring stretching device according to claim 2, characterized in that: There are a plurality of first plug holes (11), and the plurality of first plug holes (11) are linearly spaced and distributed in a direction away from the moving member (4), and the lower end of the first fixed shaft (21) is connected to one of the first plug holes (11).

4. The sealing ring stretching device according to claim 1, characterized in that: A scale (6) is fixed at a position on the workbench (1) corresponding to one side of the moving part (4) to measure the moving distance of the moving part (4).

5. The sealing ring stretching device according to claim 2, characterized in that: The second fixing member (3) comprises a second fixing shaft (31) and a second wheel body (32); the workbench (1) is provided with a second insertion hole (12); a second plug block which can be inserted into the second insertion hole (12) is formed at the lower end of the second fixing shaft (31); the second fixing shaft (31) is detachably fixed to the workbench (1) through the plug-in cooperation between the second insertion hole (12) and the second plug block; the second wheel body (32) is movably sleeved on the second fixing shaft (31); and the peripheral wall of the second wheel body (32) is used to contact the local inner wall of the sealing ring.

6. The sealing ring stretching device according to claim 5, characterized in that: There are a plurality of second plug holes (12), the plurality of second plug holes (12) are linearly spaced and distributed in a direction away from the moving member (4), and the lower end of the second fixed shaft (31) is connected to one of the second plug holes (12).

7. The sealing ring stretching device according to claim 1, characterized in that: A plurality of rollers (7) are pivotally mounted on the bottom of the workbench (1).

8. The sealing ring stretching device according to claim 5, characterized in that: The diameter of the first wheel body (22) is larger than the diameter of the second wheel body (32).

9. The sealing ring stretching device according to claim 1, characterized in that: The driving mechanism comprises a servo motor (51) and a screw rod (52); the workbench (1) is fixedly mounted with a guide rail (13); a slide groove opposite to the guide rail (13) is provided on the bottom wall of the moving member (4); the moving member (4) is mounted on the workbench (1) through the cooperation between the slide groove and the guide rail (13) and can move along the guide rail (13); the servo motor (51) is fixedly mounted at a position below the moving member (4) inside the workbench (1); one end of the screw rod (52) is in contact with the servo motor (51); The rotating end of the servo motor (51) is fixedly connected, a avoidance hole (14) having a suitable length of the screw rod (52) is opened at a position of the workbench (1) corresponding to the screw rod (52), an extension part (42) which can pass through the avoidance hole (14) from top to bottom is formed at the bottom of the moving part (4), and a screw hole for screwing with the screw rod (52) is formed on the extension part (42), and the screw rod (52) can force the extension part (42) to drive the moving part (4) to move through the screw hole during the process of rotating the rotating end of the servo motor (51).

10. The sealing ring stretching device according to any one of claims 1 to 9, characterized in that: The workbench (1) is also provided with a control panel (8) electrically connected to the driving mechanism, and is used to control the start and stop of the driving mechanism.

Images