Oil seal spring quick correction alignment tool and correction method thereof

Abstract

The present invention discloses a tool for rapid correction and alignment of an oil seal spring and a correction method thereof. The tool for rapid correction and alignment of an oil seal spring comprises a fixed seat, a front limit mechanism for correction, a rear limit mechanism for correction, a front correction arm, a rear correction arm and a flexible locking mechanism. The present invention can realize rapid correction and alignment of both ends of the opening of the oil seal spring through the joint torsion action of the front correction arm and the rear correction arm. Both sides of the opening of the oil seal spring to be corrected are in surface contact with the front correction groove and the rear correction groove. During the correction process, the force is evenly applied, and the correction effect is good. After correction, the two ends are flush and free of deformation, which is beneficial to improving the intrinsic quality and appearance quality of the spring. The tool has a simple structure, ingenious design, low manufacturing cost, and convenient operation and use. It can be used for batch rapid correction of oil seal springs of the same specification or different specifications, solving the problems of low work efficiency, poor correction quality, and easy local deformation of the force point of the spring that have been corrected by manual clamping in the industry.

Description

Technical Field

[0001] The invention belongs to the technical field of spring processing, and in particular relates to a rapid correction and alignment tool for an oil seal spring and a correction method thereof. Background Art

[0002] Oil seal spring is an annular spring used in seals and is an important component of seals. After a seal has been used for a certain period of time, the rubber part of the seal will produce fatigue loss, affecting the sealing effect. At this time, the tightening force of the oil seal spring will compensate for the fatigue loss of the rubber ring, so that the seal continues to maintain the sealing effect and extend the service life of the seal. Oil seal springs are widely used in products in industries such as machinery, automobiles, electrical appliances, hydraulic equipment and ships.

[0003] Oil seal springs are usually annular in structure and come in many different sizes. One type of oil seal spring is made by cutting a cylindrical helical spring (see Figure 7 and Figure 8 ), first replace the coil spring ( Figure 7 ) wire cutting into several single-loop annular springs ( Figure 8 ), the ring spring cut into a single coil has an opening at the cutting position. Due to the stress and torsion of the original spiral spring, the two ends of the opening of the single coil spring will be staggered. The staggered spring openings need to be corrected and aligned before they can be used as oil seal springs ( Fig. 9 )use.

[0004] At present, the correction of single-coil oil seal springs is basically done manually with clamps. Since the single-coil springs cut out by wire cutting are numerous and small in size, manual correction is not only time-consuming and labor-intensive, but also inefficient. In addition, operators rely on experience to correct the springs, resulting in uneven correction quality. At the same time, when the clamps are used to correct the single-coil springs, the local stress points of the single-coil springs will be deformed. When the two ends of the opening of the spring are corrected and aligned, the clamped stress points will be deformed, affecting the quality of the oil seal springs. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an oil seal spring rapid correction and alignment tool which has an ingenious structural design, is easy to operate and use, and can efficiently and high-quality realize the correction and alignment operation at the opening of the oil seal spring.

[0006] In order to solve the above technical problems, the technical solution of the present invention is:

[0007] The oil seal spring quick correction and alignment tool is used to correct and align the two ends of the oil seal spring opening, including:

[0008] A fixing seat, wherein a limiting groove is provided on the fixing seat;

[0009] A corrective front limit mechanism, the corrective front limit mechanism comprising a front limit plate fixedly arranged at the front end of the limit slot, and a front limit adjustment mechanism is installed on the front limit plate;

[0010] A rear-correction limit mechanism, the rear-correction limit mechanism comprising a rear limit plate fixedly arranged at the rear end of the limit groove, and a rear limit adjustment mechanism is installed on the rear limit plate;

[0011] A front correction arm, one end of which extends into the limit groove and is hinged to the fixing seat through a pin shaft, a front correction groove is provided on one side of the arm body of the front correction arm, and a part of the opening side of the oil seal spring to be corrected can be placed in the front correction groove;

[0012] A rear correction arm is arranged side by side with the front correction arm, one end of the rear correction arm also extends into the limit groove and is hinged to the fixing seat through a pin shaft, one side of the arm body of the rear correction arm is provided with a rear correction groove corresponding to the front correction groove, and the other side of the opening of the oil seal spring to be corrected can be placed in the rear correction groove; a correction gap adapted to the opening of the oil seal spring to be corrected is formed between the front correction arm and the rear correction arm;

[0013] The flexible locking mechanism is used to lock the relative free ends of the front correction arm and the rear correction arm.

[0014] As a preferred technical solution, the front limit adjustment mechanism includes a front limit adjustment screw and a front locking nut.

[0015] As a preferred technical solution, the rear limit adjustment mechanism includes a rear limit adjustment screw and a rear locking nut.

[0016] As a preferred technical solution, the flexible locking mechanism is a spring, elastic cord or elastic band wound around the front correction arm and the rear correction arm.

[0017] As a preferred technical solution, the front correction arm and the rear correction arm are respectively provided with restraint grooves near the free ends to facilitate the winding of the flexible locking mechanism.

[0018] As a preferred technical solution, a correction baffle is fixedly provided on the fixing seat at one side of the limiting groove.

[0019] As a preferred technical solution, the correction baffle is an arc-shaped plate.

[0020] As a preferred technical solution, scale lines are arranged along the circumference of the arc plate.

[0021] The present invention also provides a method for quickly correcting an oil seal spring using the above-mentioned tool, comprising the following steps:

[0022] Step 1: According to the specifications of the oil seal spring to be corrected and the required correction of the opening, adjust the limit position of the front limit adjustment mechanism so that when the front correction arm contacts the front limit adjustment mechanism, the two sides of the opening of the oil seal spring to be corrected can be placed in the front correction groove and the rear correction groove respectively;

[0023] Step 2: Place the two sides of the opening of the oil seal spring to be corrected into the front correction groove and the rear correction groove respectively, so that the opening of the oil seal spring to be corrected is aligned with the correction gap between the front correction arm and the rear correction arm, and push the free ends of the front correction arm and the rear correction arm backward at the same time. When the rear correction arm contacts the rear limit adjustment mechanism, take out the initially corrected oil seal spring to determine the correction status;

[0024] Correction conditions are divided into three categories: undercorrection, appropriate correction, and overcorrection;

[0025] Step 3: If the correction is insufficient, adjust the limit position of the rear limit adjustment mechanism backward, and then repeat step 2 until the correction is appropriate.

[0026] If the correction is appropriate, there is no need to adjust the limit position of the rear limit adjustment mechanism;

[0027] If the correction is overcorrection, adjust the limit position of the rear limit adjustment mechanism forward, and then repeat step 2 until the correction is appropriate;

[0028] Step 4: After determining the limit positions of the front limit adjustment mechanism and the rear limit adjustment mechanism according to step 1 and step 3, batch rapid correction of the oil seal springs to be corrected of the same specification can be carried out.

[0029] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0030] (1) By placing the two sides of the opening of the oil seal spring to be corrected into the front correction groove and the rear correction groove respectively, and rotating the front correction arm and the rear correction arm at the same time, the two sides of the opening of the oil seal spring to be corrected can be corrected and aligned under the joint torque of the front correction groove and the rear correction groove. The two sides of the opening of the oil seal spring to be corrected are in surface contact with the front correction groove and the rear correction groove. During the correction process, the force is evenly applied, the correction effect is good, and the two ends are flush and deformed after correction, which is beneficial to improving the internal quality and appearance quality of the spring.

[0031] (2) It is easy to operate and use, and can quickly correct oil seal springs of the same or different specifications in batches, solving the problems of low work efficiency, poor correction quality, and easy deformation of the spring stress point that have been existing in the industry by manual clamping. It not only greatly improves the production efficiency of the enterprise, but also improves the quality control link.

[0032] (3) The tooling has a simple structure, ingenious design, and low production cost, making it suitable for wide promotion and application. It fills the gap in the industry that single-loop oil seal springs cannot be quickly corrected in batches, and has great social and economic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0034] Figure 1 It is a schematic diagram of the main structure of the first embodiment of the present invention;

[0035] Figure 2 is a schematic structural diagram of a front correction arm and a rear correction arm in Embodiment 1 of the present invention;

[0036] Figure 3 is a schematic structural diagram of a fixing base in Embodiment 1 of the present invention;

[0037] Figure 4 This is a reference diagram of the state when the front correction arm contacts the front limit adjustment mechanism;

[0038] Figure 5 This is a reference diagram of the state when the rear correction arm contacts the rear limit adjustment mechanism;

[0039] Figure 6 It is a schematic diagram of the structure of the first embodiment of the present invention when it is installed;

[0040] Figure 7 It is a cylindrical helical spring to be processed by wire cutting;

[0041] Figure 8 yes Figure 7 A single-turn annular spring (i.e., the oil seal spring to be corrected) formed by wire cutting of a medium cylindrical helical spring;

[0042] Fig. 9 It is the oil seal spring after correction;

[0043] Fig.10 It is a schematic diagram of the main structure of the second embodiment of the present invention.

[0044] In the figure: 100- oil seal spring; 101- one side of the opening; 102- the other side of the opening; 103- opening; 210- fixing seat; 211- limiting groove; 212- fixing hole; 213- correcting baffle; 220- correcting front limiting mechanism; 221- front limiting plate; 222- front limiting adjustment screw; 223- front locking nut; 230- correcting rear limiting mechanism; 231- rear limiting plate; 232- rear limiting adjustment Screw; 233-rear locking nut; 240-front correction arm; 241-front correction slot; 242-free end of front correction arm; 243-front correction arm constraint slot; 250-rear correction arm; 251-rear correction slot; 252-free end of rear correction arm; 253-rear correction arm constraint slot; 260-flexible locking mechanism; 270-bolt; 281-front pin shaft; 282-rear pin shaft; 290-correction gap; 300-workbench. DETAILED DESCRIPTION

[0045] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention are described only by way of illustration. Needless to say, those of ordinary skill in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0046] In the description of the present invention, it should be noted that the terms "center", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0047] Embodiment 1

[0048] like Figures 1 to 6 As shown, the oil seal spring quick correction and alignment tool is used for the oil seal spring 100 ( Figure 7 The correction alignment at both ends of the opening (shown) includes a fixing seat 210, a front correction limit mechanism 220, a rear correction limit mechanism 230, a front correction arm 240, a rear correction arm 250 and a flexible locking mechanism 260, wherein:

[0049] The fixing seat 210 is used to fix the entire tooling. A strip-shaped limiting groove 211 is provided at the center of the fixing seat 210, and a fixing hole 212 is provided at one end. Figure 6 When using the tooling, the fixing seat 210 can be fixed on the workbench 300 by bolts 270, and the fixing and installation is convenient;

[0050] The correction front limit mechanism 220 includes a front limit plate 221 fixedly arranged at the front end of the limit groove 211, and a front limit adjustment mechanism is installed on the front limit plate 221; in this embodiment, the front limit adjustment mechanism includes a front limit adjustment screw 222 and a front locking nut 223, and an adjustment hole is provided on the front limit plate 221, and the front limit adjustment screw 222 passes through the adjustment hole. By adjusting the front and rear positions of the front limit adjustment screw 222 and then locking it through the front locking nut 223, the correction front limit of oil seal springs of different specifications can be achieved;

[0051] The corrected rear limit mechanism 230 includes a rear limit plate 231 fixedly arranged at the rear end of the limit groove 211, and a rear limit adjustment mechanism is installed on the rear limit plate 231; in this embodiment, the rear limit adjustment mechanism includes a rear limit adjustment screw 232 and a rear locking nut 233, and an adjustment hole is also provided on the rear limit plate 231. By adjusting the front and rear positions of the rear limit adjustment screw 232 and locking through the rear locking nut 233, the corrected limit of oil seal springs of different specifications can be achieved, and the correction force of oil seal springs of the same specification is ensured to be uniform;

[0052] One end of the front correction arm 240 extends into the limiting groove 211 and is hinged to the fixing seat 210 through the front pin 281. A front correction groove 241 is provided on one side of the arm body of the front correction arm 240. The opening side portion 101 of the oil seal spring 100 to be corrected can be placed in the front correction groove 241.

[0053] The rear correction arm 250 is arranged side by side with the front correction arm 240, one end of the rear correction arm 250 also extends into the limiting groove 211 and is hinged to the fixing seat 210 through the rear pin shaft 282, and a rear correction groove 251 corresponding to the front correction groove 241 is opened on one side of the arm body of the rear correction arm 250, and the other side part 102 of the opening of the oil seal spring 100 to be corrected can be placed in the rear correction groove 251; a correction gap 290 adapted to the opening 103 of the oil seal spring 100 to be corrected is formed between the front correction arm 240 and the rear correction arm 250, so as to ensure that during the correction process of the oil seal spring, the front correction arm 240 and the rear correction arm do not interfere with the two sides of the spring opening;

[0054] The flexible locking mechanism 260 is used to lock the relative free ends of the front correction arm 240 and the rear correction arm 250, that is, to ensure that the free ends 242 and 252 of the front correction arm perform synchronous rotational motion. The flexible locking mechanism 260 can be a spring, elastic cord or elastic band wound around the front correction arm and the rear correction arm, all of which should fall within the scope of protection of the present invention. The front correction arm 240 and the rear correction arm 250 are respectively provided with constraint grooves near the free ends to facilitate the winding of the flexible locking mechanism 260, namely the front correction arm constraint groove 243 and the rear correction arm constraint groove 253.

[0055] refer to Figure 4 and Figure 5 , the correction method includes the following steps:

[0056] Step 1: According to the oil seal spring 100 to be corrected (reference Figure 8 ) and the required correction of the opening, adjust the limit position of the front limit adjustment mechanism so that when the front correction arm 240 contacts the front limit adjustment mechanism, the two sides of the opening of the oil seal spring 100 to be corrected can be placed in the front correction groove 241 and the rear correction groove 251 respectively;

[0057] Step 2: Place the two sides of the opening of the oil seal spring 100 to be corrected into the front correction groove 241 and the rear correction groove 251 respectively, so that the opening 103 of the oil seal spring 100 to be corrected is aligned with the correction gap 290 between the front correction arm 240 and the rear correction arm 250, and push the free ends of the front correction arm 240 and the rear correction arm 250 backward at the same time. When the rear correction arm 250 contacts the rear limit adjustment mechanism, take out the initially corrected oil seal spring and judge the correction situation;

[0058] Correction conditions are divided into three categories: undercorrection, appropriate correction, and overcorrection;

[0059] Step 3: If the correction is insufficient, adjust the limit position of the rear limit adjustment mechanism backward, and then repeat step 2 until the correction is appropriate.

[0060] If the correction is appropriate, there is no need to adjust the limit position of the rear limit adjustment mechanism;

[0061] If the correction is overcorrection, adjust the limit position of the rear limit adjustment mechanism forward, and then repeat step 2 until the correction is appropriate;

[0062] Step 4: After determining the limit positions of the front limit adjustment mechanism and the rear limit adjustment mechanism according to step 1 and step 3, batch rapid correction of the oil seal springs to be corrected of the same specification can be carried out.

[0063] If the specifications of the oil seal spring change, it is necessary to re-determine the limit positions of the front limit adjustment mechanism and the rear limit adjustment mechanism according to the above steps.

[0064] The present invention places the two sides of the opening of the oil seal spring 100 to be corrected into the front correction groove 241 and the rear correction groove 251 respectively, and rotates the front correction arm 240 and the rear correction arm 250 at the same time. Under the common torsion of the front correction groove 241 and the rear correction groove 251, the two sides of the opening of the oil seal spring to be corrected can be corrected and aligned instantly. The two sides of the opening of the oil seal spring 100 to be corrected are in surface contact with the front correction groove and the rear correction groove. During the correction process, the force is evenly applied, the correction effect is good, and the two ends are flush and free of deformation after correction (reference Fig. 9 ), which is beneficial to improve the internal quality and appearance quality of the spring.

[0065] The present invention realizes batch rapid correction of oil seal springs of the same or different specifications, and solves the problems of low work efficiency, poor correction quality, and easy deformation of spring stress points that have been used for correction by manual clamping in the industry. It not only greatly improves the production efficiency of enterprises, but also improves the quality control link. At the same time, the tooling has a simple structure, ingenious design, low production cost, and convenient operation and use, which is suitable for wide promotion and application.

[0066] Embodiment 2

[0067] refer to Fig.10 The structural principle of this embodiment is basically the same as that of the first embodiment, and the only difference is that a correction baffle 213 is fixedly arranged on the fixed seat 210 at one side of the limit groove 211. The correction baffle 213 can avoid the shaking of the front correction arm 240 and the rear correction arm 250 during rotation correction, thereby improving efficiency; the correction baffle 213 is preferably an arc-shaped plate, and scale lines are circumferentially arranged on the upper edge of the arc-shaped plate. The scale lines can be used to record the appropriate correction limit positions of oil seal springs of different specifications, and when the specifications of the oil seal springs change, they can be quickly adjusted into place.

[0068] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. The oil seal spring quick correction and alignment tool is used for correction and alignment of both ends of the oil seal spring opening, and its characteristics are: include: A fixing seat, wherein a limiting groove is provided on the fixing seat; A corrective front limit mechanism, the corrective front limit mechanism comprising a front limit plate fixedly arranged at the front end of the limit slot, and a front limit adjustment mechanism is installed on the front limit plate; A rear-correction limit mechanism, the rear-correction limit mechanism comprising a rear limit plate fixedly arranged at the rear end of the limit groove, and a rear limit adjustment mechanism is installed on the rear limit plate; A front correction arm, one end of which extends into the limit groove and is hinged to the fixing seat through a pin shaft, a front correction groove is provided on one side of the arm body of the front correction arm, and a part of the opening side of the oil seal spring to be corrected can be placed in the front correction groove; A rear correction arm is arranged side by side with the front correction arm, one end of the rear correction arm also extends into the limit groove and is hinged to the fixing seat through a pin shaft, one side of the arm body of the rear correction arm is provided with a rear correction groove corresponding to the front correction groove, and the other side of the opening of the oil seal spring to be corrected can be placed in the rear correction groove; a correction gap adapted to the opening of the oil seal spring to be corrected is formed between the front correction arm and the rear correction arm; The flexible locking mechanism is used to lock the relative free ends of the front correction arm and the rear correction arm.

2. The oil seal spring quick correction and alignment tool as claimed in claim 1, characterized in that: The front limit adjustment mechanism comprises a front limit adjustment screw and a front locking nut.

3. The oil seal spring quick correction and alignment tool as claimed in claim 1, characterized in that: The rear limit adjustment mechanism comprises a rear limit adjustment screw and a rear locking nut.

4. The oil seal spring quick correction and alignment tool as claimed in claim 1, characterized in that: The flexible locking mechanism is a spring, an elastic cord or an elastic band wound around the front correction arm and the rear correction arm.

5. The oil seal spring quick correction and alignment tool as claimed in claim 4, characterized in that: The front correction arm and the rear correction arm are respectively provided with restraint grooves near the free ends for facilitating the winding of the flexible locking mechanism.

6. The oil seal spring quick correction and alignment tool according to any one of claims 1 to 5, characterized in that: A correction baffle is fixedly arranged on the fixing seat at one side of the limiting groove.

7. The oil seal spring quick correction and alignment tool as claimed in claim 6, characterized in that: The correction baffle is an arc-shaped plate.

8. The oil seal spring quick correction and alignment tool as claimed in claim 7, characterized in that: The arc-shaped plate is provided with scale lines along the circumference.

9. The correction method using the oil seal spring quick correction and alignment tool as claimed in claim 1 is characterized in that: The steps include: Step 1: According to the specifications of the oil seal spring to be corrected and the required correction of the opening, adjust the limit position of the front limit adjustment mechanism so that when the front correction arm contacts the front limit adjustment mechanism, the two sides of the opening of the oil seal spring to be corrected can be placed in the front correction groove and the rear correction groove respectively; Step 2: Place the two sides of the opening of the oil seal spring to be corrected into the front correction groove and the rear correction groove respectively, so that the opening of the oil seal spring to be corrected is aligned with the correction gap between the front correction arm and the rear correction arm, and push the free ends of the front correction arm and the rear correction arm backward at the same time. When the rear correction arm contacts the rear limit adjustment mechanism, take out the initially corrected oil seal spring to determine the correction status; Correction conditions are divided into three categories: undercorrection, appropriate correction, and overcorrection; Step 3: If the correction is insufficient, adjust the limit position of the rear limit adjustment mechanism backward, and then repeat step 2 until the correction is appropriate. If the correction is appropriate, there is no need to adjust the limit position of the rear limit adjustment mechanism; If the correction is overcorrection, adjust the limit position of the rear limit adjustment mechanism forward, and then repeat step 2 until the correction is appropriate; Step 4: After determining the limit positions of the front limit adjustment mechanism and the rear limit adjustment mechanism according to step 1 and step 3, batch rapid correction of the oil seal springs to be corrected of the same specification can be carried out.

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