Oil seal spring coiling machine

Abstract

The present invention provides an oil seal spring coiling machine, comprising a frame, a motor, and a mobile platform. The motor is fixedly mounted at one end of the frame, and the mobile platform is mounted at the other end of the frame and can perform linear reciprocating motion relative to the output shaft of the motor. The output shaft of the motor is provided with a slender coiling spring core shaft coaxial with the output shaft, and the end face of the output shaft is provided with a groove penetrating the circumference; a limit mechanism and a feeding mechanism are provided on the mobile platform; the limit mechanism is provided with a through hole corresponding to the coiling spring core shaft, and when the mobile platform gradually approaches the output shaft of the motor, the coiling spring core shaft penetrates into the through hole of the limit mechanism; the feeding mechanism is located on the front side of the limit mechanism. The oil seal spring coiling machine provided by the present invention has the advantages of ingenious conception and simple structure, and the oil seal springs processed by the coiling machine are of stable quality and high qualified rate.

Description

Technical Field

[0001] The invention relates to the field of machinery, and in particular to an oil seal spring coiling machine. 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. Based on the above characteristics, oil seal springs are widely used in products in industries such as machinery, automobiles, electrical appliances, hydraulic equipment and ships.

[0003] like Figure 1 As shown, the existing oil seal spring includes a cylindrical spring body wound by a metal wire, and the spring body includes a head end and a tail end coaxially arranged, the outer diameter of the tail end is smaller than the inner diameter of the head end, and the tail end is a truncated cone structure. When in use, the tail end is reversed and clamped in the head end and then welded or bonded, so as to form a Figure 2 The annular oil seal spring is shown.

[0004] Since the shape and outer diameter of the tail end of the oil seal spring are significantly different from those of the head end, it is more troublesome to process. Existing spring winding machines either cannot process and shape the spring in one step or have a complex structure and are expensive. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an oil seal spring coiling machine, which has a simple structure and can process and shape the oil seal spring at one time.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: an oil seal spring winding machine, comprising a frame, a motor, and a movable platform, wherein the motor is fixedly mounted at one end of the frame, and the movable platform is mounted at the other end of the frame and can make linear reciprocating motion relative to the output shaft of the motor, and an elongated winding spring core shaft coaxial with the output shaft is mounted on the output shaft of the motor, and the end face of the output shaft is provided with a groove penetrating the circumferential surface; a limiting mechanism and a feeding mechanism are provided on the movable platform; the limiting mechanism is provided with a through hole corresponding to the winding spring core shaft, and when the movable platform gradually approaches the output shaft of the motor, the winding spring core shaft penetrates into the through hole of the limiting mechanism; the feeding mechanism is located on the front side of the limiting mechanism.

[0007] The working process of the above-mentioned spring winding machine is: first push the moving platform to make it close to the output shaft of the motor, and insert the winding spring core shaft into the through hole of the limiting mechanism, and then extend the end of the spring steel wire to between the motor output shaft and the limiting mechanism through the feeding mechanism, start the motor, and the output shaft drives the winding spring core shaft to rotate together, and the end of the spring steel wire will be rolled into the groove on the end face of the output shaft, and the winding spring core shaft continues to rotate in the same direction, and the spring steel wire will be wound around the winding spring core shaft one circle after another; every time the spring steel wire is wound around the winding spring core shaft, an extrusion force will be applied to the limiting mechanism on the moving platform, pushing the moving platform gradually away from the output end of the motor. When the spring steel wire is wound to the winding When the spring core shaft reaches the end, the coil spring core shaft will naturally disengage from the limit mechanism; at this time, the coil spring core shaft continues to rotate in the same direction, and the winding action of the spring wire suddenly loses the support of the coil spring core shaft. The inner diameter of the wound circle will gradually shrink until it returns to zero. Returning to zero means that the spring wire will no longer continue to be wound in circles. Without winding, no pulling force will be generated on the spring wire in the feeding mechanism. However, since the coil spring core shaft and the spring coil attached to the coil spring core shaft continue to rotate, a torque will be generated at the point where the inner diameter of the spring coil returns to zero, and the spring wire will be twisted off from here. The spring coil is taken out of the coil spring core shaft, and the ends are slightly trimmed to make it smooth, and the result is as shown below. Figure 1 Oil seal spring shown.

[0008] Furthermore, a collet is provided at one end of the limiting mechanism close to the motor, and the inner diameter of the collet is adjustable.

[0009] Furthermore, the feeding mechanism is provided with a threading hole perpendicular to the coil spring core axis.

[0010] Furthermore, a collet is also provided at the discharge end of the feeding mechanism, and the inner diameter of the collet is adjustable.

[0011] Preferably, the mobile platform is mounted on the frame via a slide slot.

[0012] Furthermore, a rotating shaft is installed at the lower part of the frame, and the rotating shaft is used to provide support for the spring wire coil.

[0013] The oil seal spring coiling machine provided by the invention has the advantages of ingenious design and simple structure, and the oil seal springs processed by the coiling machine have stable quality and high qualified rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the semi-finished structure of the oil seal spring;

[0015] Figure 2 It is a schematic diagram of the structure of the oil seal spring in use state;

[0016] Figure 3Schematic diagram of the structure of a spring coiling machine in an embodiment of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the spring coiling machine in the embodiment of the present invention when it is in working state;

[0018] Figure 5 for Figure 3 A schematic diagram of a top view structure;

[0019] Figure 6 Schematic diagram of the end surface structure of the motor output shaft in an embodiment of the present invention;

[0020] The accompanying drawings are marked as follows:

[0021] 1——Frame 2——Motor 21——Output shaft

[0022] 22——coil spring mandrel 23——groove 3——moving platform

[0023] 4——Rotating shaft 5——Spring wire coil 6——Slide slot

[0024] 7——Limiting mechanism 8——Feeding mechanism 9——Collet clamp. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0026] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In the description of the present invention, it should be noted that, unless otherwise specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two elements, it can be a direct connection, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meaning of the terms can be understood according to the specific circumstances.

[0027] like Figures 3 to 6As shown, the preferred embodiment of the present invention is: an oil seal spring coiling machine, comprising a frame 1, a motor 2, and a mobile platform 3. A rotating shaft 4 is installed at the lower part of the frame 1, and the rotating shaft 4 is used to provide support for the spring wire coil 5. The motor 2 is fixedly installed at one end of the frame 1, and the mobile platform 3 is installed at the other end of the frame 1 through a slide groove 6 and can make linear reciprocating motion relative to the output shaft 21 of the motor 2. The output shaft 21 of the motor 2 is equipped with a slender coiling spring core shaft 22 coaxial with the output shaft 21, and the end surface of the output shaft 21 is provided with a groove 23 penetrating the circumference; the mobile platform 3 is provided with a There are a limiting mechanism 7 and a feeding mechanism 8; the limiting mechanism 7 is provided with a through hole corresponding to the coil spring core shaft 22, and a collet 9 is installed at one end of the limiting mechanism 7 close to the motor 2, and the inner diameter of the collet 9 is adjustable. When the moving platform 3 gradually approaches the output shaft 21 of the motor, the coil spring core shaft 22 passes through the collet 9 into the through hole of the limiting mechanism 7; the feeding mechanism 8 is located on the front side of the limiting mechanism 7, and the feeding mechanism 8 is provided with a threading hole perpendicular to the coil spring core shaft 22, and a collet 9 is also installed at the discharge end of the feeding mechanism 8, and the inner diameter of the collet 9 is adjustable.

[0028] The working process of the above-mentioned spring winding machine is: first push the mobile platform 3 to make it close to the output shaft 21 of the motor 2, and insert the coil spring core shaft 22 into the through hole of the limiting mechanism 7, and then extend the end of the spring steel wire between the output shaft 21 of the motor and the limiting mechanism 7 through the feeding mechanism 8, start the motor 2, and the output shaft 21 drives the coil spring core shaft 22 to rotate together, and the end of the spring steel wire will be rolled into the groove 23 on the end face of the output shaft 21, and the coil spring core shaft 22 continues to rotate in the same direction, and the spring steel wire will be wound around the coil spring core shaft 22 one circle after another; every time the spring steel wire is wound around the coil spring core shaft 22, an extrusion force will be applied to the limiting mechanism on the mobile platform, pushing the mobile platform 3 gradually away from the output end 21 of the motor. When the spring wire is wound to the end of the coil spring core shaft 22, the coil spring core shaft 22 will naturally disengage from the limiting mechanism 7; at this time, the coil spring core shaft 22 still continues to rotate in the same direction, and the coiling action of the spring wire suddenly loses the support of the coil spring core shaft 22, and the inner diameter of the coiled circle will gradually shrink until it returns to zero. Returning to zero means that the spring wire will no longer continue to be coiled, and no coiling will be performed, so that no tension will be generated on the spring wire in the feeding mechanism 8. However, since the coil spring core shaft 22 and the spring coil attached to the coil spring core shaft 22 continue to rotate, a torque will be generated at the point where the inner diameter of the spring coil returns to zero, and the spring wire will be twisted off from here, the spring coil will be taken out from the coil spring core shaft 22, and the head and tail ends will be slightly trimmed to be flat, and the result is as shown in the figure. Figure 1 Oil seal spring shown.

[0029] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

[0030] In order to make it easier for ordinary technicians in the field to understand the improvements of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and for the sake of clarity, some other elements are omitted in this application document. Ordinary technicians in the field should realize that these omitted elements may also constitute the content of the present invention.

Claims

1. A method for processing an oil seal spring, wherein the spring coiling machine used comprises a frame (1), a motor (2), and a moving platform (3), and is characterized in that: The motor (2) is fixedly mounted on one end of the frame (1), and the movable platform (3) is mounted on the other end of the frame (1) and can perform linear reciprocating motion relative to the output shaft (21) of the motor (2). The output shaft (21) of the motor is provided with a slender coil spring core shaft (22) coaxial with the output shaft (21), and a groove (23) penetrating the circumference is provided on the end surface of the output shaft (21) near the coil spring core shaft (22); a limiting mechanism (7) and a feeding mechanism (8) are provided on the movable platform (3); the limiting mechanism (7) is provided with a through hole corresponding to the coil spring core shaft (22), and when the movable platform (3) gradually approaches the output shaft (21) of the motor, the coil spring core shaft (22) penetrates into the through hole of the limiting mechanism (7); the feeding mechanism (8) is located on the front side of the limiting mechanism (7), and is used to extend the end of the spring steel wire to the output shaft (21) and the limiting mechanism (7); after the motor (2) is started, the output shaft (21) drives the coil spring mandrel (22) to rotate together, and the end of the spring wire is wound into the groove (23) on the end face of the output shaft (21), and the coil spring mandrel (22) continues to rotate in the same direction, and the spring wire is wound around the coil spring mandrel (22) one circle after another; each time the spring wire is wound around the coil spring mandrel (22), the limiting mechanism (7) on the moving platform (3) is provided. ) applies an extrusion force to push the mobile platform (3) gradually away from the output end (21) of the motor. When the spring wire is wound around the end of the coil spring mandrel (22), the coil spring mandrel (22) is separated from the limit mechanism (7). At this time, the coil spring mandrel (22) continues to rotate in the same direction. The coiling action of the spring wire suddenly loses the support of the coil spring mandrel (22), and the inner diameter of the coiled circle gradually decreases until it returns to zero, and a torque is generated at the zero position to break the spring wire.

2. The method for processing an oil seal spring according to claim 1, characterized in that: A collet (9) is provided at one end of the limiting mechanism (7) close to the motor (2), and the inner diameter of the collet (9) is adjustable.

3. The method for processing an oil seal spring according to claim 1, characterized in that: The feeding mechanism (8) is provided with a threading hole which is perpendicular to the coil spring core shaft (22).

4. The method for processing an oil seal spring according to claim 3, characterized in that: The discharge end of the feeding mechanism (8) is provided with a collet (9), and the inner diameter of the collet (9) is adjustable.

5. The method for processing an oil seal spring according to claim 1 or 2, characterized in that: The mobile platform (3) is mounted on the frame (1) via a slide groove (6).

6. The method for processing an oil seal spring according to claim 1 or 2, characterized in that: A rotating shaft (4) is mounted at the bottom of the frame (1), and the rotating shaft (4) is used to provide support for the spring wire coil (5).

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