Volute spiral spring winding forming device and mounting method
By designing a scroll spring winding forming device, using the coordination of the base and the winding part, combined with the reel self-locking and pushing device, the problems of difficulty in forming the scroll spring molding and cumbersome installation in the prior art are solved, and an efficient and safe forming and installation process is achieved.
Patent Information
- Application Number
- CN202311595957.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-27
- Publication Date
- 2025-05-27
AI Technical Summary
The existing scroll spring forming operation relies on manual manual, especially for thicker scroll springs, which are difficult to form and can easily lead to operational errors, personnel injuries and product damage. At the same time, the installation process is cumbersome, which affects molding efficiency and product quality.
A spiral spring winding forming device is designed, including a base and a winding part. The spiral spring is wound through the step hole of the base and the reel of the winding part to realize the winding spring; the reel self-locking device realizes the unidirectional rotation of the reel to prevent reverse rotation; and the spiral spring is quickly and safely installed by the pushing device.
It improves the forming efficiency and stability of the scroll spring, reduces the labor intensity of the operator, enhances safety, and ensures the improvement of product quality.
Smart Images
Figure CN120038216A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of spring processing, and particularly relates to a scroll spring winding and forming device and an installation method thereof. Background Art
[0002] A spring is an indispensable part of a machine. It can deform under an external force and store or release energy. A scroll spring, also known as a clockwork spring, is mostly made of strip material. In a free state, it has forms such as a planar spiral or a straight strip. It is a torque spring with one end fixed and the other end acting, and generally has connecting structures such as connecting hooks at both ends. A scroll spring deforms under an external force and can return to its initial state after the external force is removed.
[0003] In the aerospace field, especially for separation devices used for clamping connection and release in launch missions such as satellites, fairings, boosters, and solar wings, high reliability is required, and whether the quality is qualified seriously affects the completion of the launch mission. For the scroll springs used in existing separation devices, their forming operations usually adopt manual operation. Especially for relatively thick scroll springs, forming is more difficult. Mistakes of operators and the reaction force when the spring is stressed are likely to cause problems such as personal injury and product damage, and the installation process is cumbersome, affecting the forming efficiency and product quality, and the installation efficiency is low. Summary of the Invention
[0004] The present invention provides a scroll spring winding and forming device and an installation method thereof. The device has high forming efficiency, good stability, strong safety, and reduces the labor intensity of operators.
[0005] The above object of the invention is achieved by the following technical solutions:
[0006] A scroll spring winding and forming device includes a base and a winding part. A circular stepped hole is provided on one side of the base, and a shaft hole coaxial with the stepped hole is provided on the base. The winding part includes a reel and a scroll shaft fixedly connected thereto coaxially. The scroll shaft is rotatably connected in the shaft hole, the reel is accommodated in the stepped hole, an annular accommodating cavity for accommodating the scroll spring is formed between the reel and the side wall of the stepped hole, a side groove penetrating the base is provided on the side wall of the stepped hole in the radial direction, and a groove is provided on the outer edge of the reel along its axial direction; a scroll shaft self-locking device for the one-way rotation of the scroll shaft is provided between the scroll shaft and the base; a pushing device for pushing the scroll spring out of the annular accommodating cavity is provided on the base.
[0007] The above-mentioned scroll spring winding and forming device, wherein the scroll self-locking device includes a ratchet wheel, a pawl and a pawl driving part. The ratchet wheel is located on the side of the base away from the stepped hole. The ratchet wheel is clamped on the scroll. The pawl is rotatably connected to the base and meshes with the ratchet wheel. The pawl driving part includes a support seat fixed on the surface of the base. A compression spring is clamped between the support seat and the pawl. A limit post for restricting the movement of the pawl is arranged on the base on the side of the pawl away from the compression spring.
[0008] The above-mentioned scroll spring winding and forming device, wherein a retaining ring is sleeved on the scroll on the side of the ratchet wheel away from the stepped hole. A through hole is arranged radially on the retaining ring, and a positioning screw screwed with the scroll is arranged in the through hole.
[0009] The above-mentioned scroll spring winding and forming device, wherein the pushing device includes a push rod, a push plate, a return spring and a pressure plate. There are at least two push rods which are evenly distributed along the circumferential direction of the annular accommodating cavity. The push rods penetrate and slide on the base. The push plate is located in the annular accommodating cavity and is fixedly connected with the corresponding push rod. The other end of the push rod is fixedly connected with the pressure plate. A return spring is sleeved on the push rod between the base and the pressure plate.
[0010] The above-mentioned scroll spring winding and forming device, wherein there are 6 push rods, and the corresponding push plates and return springs are both 6.
[0011] The above-mentioned scroll spring winding and forming device, wherein a relief groove for the scroll and the scroll self-locking device to pass through is arranged on the pressure plate.
[0012] The above-mentioned scroll spring winding and forming device, wherein the push plate is in a disc shape or a sector ring shape, and the width of the push plate is adapted to the width of the annular accommodating cavity.
[0013] The above-mentioned scroll spring winding and forming device, wherein a bearing is sleeved on the scroll. A bearing seat is arranged at the shaft hole of the base. The outer ring of the bearing is matched with the bearing seat, and the inner ring of the bearing is matched with the scroll.
[0014] The above-mentioned scroll spring winding and forming device, wherein a transmission rod is clamped at the end of the scroll.
[0015] A method for winding and installing a scroll spring according to the present invention uses the above-mentioned scroll spring winding and forming device, and includes the following steps:
[0016] a. Winding of the scroll spring
[0017] Insert the scroll spring into the side groove, and make the hook at one end of the scroll spring located outside the base. The hook at the other end of the scroll spring is embedded in the groove. Drive the scroll to rotate, drive the reel to rotate and wind the scroll spring around the reel. After the scroll spring reaches the specified number of winding turns, stop driving the scroll, and the scroll stops moving under the action of the scroll self-locking device.
[0018] b. Installation of the scroll spring
[0019] Align and fix the product to be installed with the stepped hole of the base, and insert the hook of the scroll spring located outside the base into the shaft rod of the product to be installed. Apply a force to the pressure plate in the direction of the scroll spring. The pressure plate drives the push plate through the push rod to push the scroll spring out of the annular accommodation cavity and press it into the product to be installed. Release the thrust on the pressure plate, and under the action of the return spring, the pushing device resets to complete the winding and installation work of the scroll spring.
[0020] In summary, the beneficial technical effects of the present invention are as follows:
[0021] The present invention realizes the winding of the scroll spring through the cooperation of the stepped hole of the base and the winding part, and realizes the one-way rotation of the scroll through the scroll self-locking device to prevent the reverse rotation during the intermittent winding of the scroll spring; the pushing device realizes the smooth pushing of the wound scroll spring out of the annular accommodation cavity to achieve the fast and safe installation of the scroll spring. Description of the drawings
[0022] Figure 1 is the front view of the present invention;
[0023] Figure 2 is Figure 1 the A-A cross-sectional view of
[0024] Figure 3 is the rear view of the present invention;
[0025] Figure 4 is the side view of the winding part of the present invention;
[0026] Figure 5 is the schematic diagram of the state of the pushing device after the scroll spring is pushed into the product to be installed.
[0027] As shown in the figure, 1. Base; 11. Stepped hole; 12. Shaft hole; 13. Side groove; 14. Annular accommodation cavity; 15. Bearing seat; 2. Winding part; 21. Reel; 211. Groove; 22. Scroll; 3. Scroll self-locking device; 31. Ratchet; 32. Pawl; 33. Pawl driving part; 331. Support seat; 332. Compression spring; 333. Limit post; 4. Pushing device; 41. Push rod; 42. Push plate; 43. Return spring; 44. Pressure plate; 441. Relief groove; 5. Retaining ring; 51. Set screw; 6. Bearing; 7. Transmission rod; 8. Scroll spring; 9. Product to be installed. Specific Embodiment
[0028] The following will further elaborate on the present invention in conjunction with the Figures 1-5 accompanying drawings.
[0029] As Figure 1 shown, a scroll spring winding and forming device includes a base 1 and a winding part 2. On one side of the base 1, there is a circular stepped hole 11. On the base 1, there is a shaft hole 12 coaxial with the stepped hole 11, and the shaft hole 12 penetrates through the base 1. The winding part 2 includes a columnar reel 21 and a coaxial fixed shaft 22. The shaft 22 is rotatably connected in the shaft hole 12, and the reel 21 is accommodated in the stepped hole 11. There is an annular accommodation cavity 14 for accommodating the scroll spring 8 between the reel 21 and the side wall of the stepped hole 11. The side wall of the stepped hole 11 is provided with a side groove penetrating through the base 1 in the radial direction, and a groove 211 is provided on the outer edge of the reel 21 along its axial direction; a self-locking device 3 for the one-way rotation of the shaft 22 is provided between the shaft 22 and the base 1; a pushing device 4 for pushing the scroll spring 8 out of the annular accommodation cavity 14 is provided on the base 1.
[0030] As Figure 1 、 2 、4 shown, the self-locking device 3 of the shaft 22 in this embodiment includes a ratchet 31, a pawl 32 and a pawl driving part 33. The ratchet 31 is located on the side of the base 1 away from the stepped hole 11, and the ratchet 31 is clamped on the shaft 22. Specifically, the shaft 22 and the ratchet 31 can be clamped through splines or key grooves; the pawl 32 is rotatably connected to the base 1 and meshes with the ratchet 31. The pawl driving part 33 includes a support seat 331 fixed on the surface of the base 1, and a compression spring 332 is clamped between the support seat 331 and the pawl 32; specifically, clamping columns can be fixedly connected to the support seat 331 and the pawl 32, and both ends of the compression spring 332 are inserted into the corresponding clamping columns; this can improve the connection reliability of the compression spring 332 with the support seat 331 and the pawl 32; a limit post 333 for restricting the movement of the pawl 32 is provided on the base 1 on the side of the pawl 32 away from the compression spring 332. When the winding of the scroll spring 8 is intermittently interrupted by the reel 21, the elastic force of the scroll spring 8 causes the ratchet 31 and the pawl 32 to mesh, and through the position limitation of the pawl 32 by the limit post 333, the reverse rotation of the ratchet 31 is effectively prevented.
[0031] As Figure 1 、 2As shown in the figure, the counterclockwise rotation of the transmission rod 7 drives the rotation of the reel 22. The reel 22 drives the ratchet wheel 31 to rotate counterclockwise and overcome the elastic force of the compression spring 332 to push open the pawl 32, so that the pawl 32 is in the unlocked state. After the volute spring 8 is wound, the force applied to the reel 22 is released. The pawl 32 is reset under the elastic force of the compression spring 332 and meshes with the ratchet wheel 31. At this time, the pawl 32 blocks the ratchet wheel 31 through the limit post 333, restricting the clockwise rotation of the ratchet wheel 31. The ratchet wheel 31 is self-locked without external force. At this time, the volute spring 8 is wound in the annular placement cavity 14.
[0032] As Figure 2 shown, in order to prevent the ratchet wheel 31 from axially moving on the reel 22, a retaining ring 5 is sleeved on the reel 22 on the side of the ratchet wheel 31 away from the stepped hole 11. The retaining ring 5 is provided with a through hole in the radial direction, and a positioning screw 51 screwed with the reel 22 is arranged in the through hole.
[0033] As Figures 1-3 shown, the pushing device 4 of this embodiment includes a push rod 41, a push plate 42, a return spring 43 and a pressure plate 44. There are at least two push rods 41, which are evenly distributed along the circumference of the annular placement cavity 14. The push rods 41 penetrate and slide on the base 1. The push plate 42 is located in the annular placement cavity 14 and is fixedly connected to the corresponding push rod 41. The other end of the push rod 41 is fixedly connected to the pressure plate 44. A return spring 43 is sleeved on the push rod 41 between the base 1 and the pressure plate 44.
[0034] The push plate 42 of this embodiment is fixedly connected to the push rod 41 by screws, and the pressure plate 44 is also fixedly connected to the push rod 41 by screws. As Figure 5 shown, applying pressure to the pressure plate 44 can overcome the elastic force of the return spring 43 and drive the push plate 42 to move axially along the stepped hole 11 in the annular placement cavity 14 through the push rod 41, so as to realize the pushing of the volute spring 8 located in the annular placement cavity 14.
[0035] As Figure 1 、 5 shown, there are 6 push rods 41 in this embodiment, and the corresponding push plates 42 and return springs 43 are both 6. Uniformly arranging 6 push rods 41 along the circumference of the annular placement cavity 14 can stably and safely push the volute spring 8 from the annular placement cavity 14 into the product 9 to be installed.
[0036] As Figure 2 、 3 shown, in order to ensure the stable pushing of the volute spring 8 in the annular placement cavity 14, the push plate 42 is in a disc shape or a sector ring shape. The push plate 42 of this embodiment adopts a disc shape, and the diameter of the push plate 42 is slightly smaller than the width of the annular placement cavity 14; when the push plate adopts a sector ring shape, the width of the push plate 42 is slightly smaller than the width of the annular placement cavity 14.
[0037] As Figure 1As shown, in order to avoid interference between the pressure plate 44 and the reel 22 and the reel self-locking device during the working process of the pressure plate 44, a relief groove 441 is provided on the pressure plate 44 for the reel 22 and the reel self-locking device 3 to pass through.
[0038] As Figure 2 shown, in order to reduce the friction during the rotation of the reel 22, a bearing 6 is sleeved on the reel 22, and a bearing seat 15 is provided in the shaft hole 12 of the base 1. The outer ring of the bearing 6 is fitted with the bearing seat 15, and the inner ring of the bearing 6 is fitted with the reel 22.
[0039] As Figure 2 、 4 shown, in order to facilitate the driving of the reel 22, the cross-section of the end of the reel 22 is hexagonal, and the end of the reel 22 is clamped with a transmission rod 7, and the transmission rod 7 is rotated by manual or external electric equipment.
[0040] The installation method of the present invention using the above scroll spring winding and forming device includes the following steps:
[0041] a. Winding of the scroll spring
[0042] Insert the scroll spring 8 into the side groove 13, and make the hook at one end of the scroll spring 8 located outside the base 1, and the hook at the other end of the scroll spring is embedded in the groove 211; drive the reel 22 to rotate, the reel 22 drives the reel 21 to rotate and wind the scroll spring 8 on the reel 21. After the scroll spring 8 reaches the specified number of winding turns, at this time, the hook at the end of the scroll spring 8 located outside the base 1 is hung on the groove 211, stop driving the reel 22, and the reel 22 stops moving under the action of the reel self-locking device 3;
[0043] b. Installation of the scroll spring
[0044] Align and fix the product 9 to be installed with the stepped hole 11 of the base 1, and insert the hook of the scroll spring 8 located outside the base 1 into the shaft rod of the product 9 to be installed. Apply a force to the pressure plate 44 in the direction of the scroll spring 8. The pressure plate 44 drives the push plate 42 through the push rod 41 to push the scroll spring 8 out of the annular accommodating cavity 14 and press it into the product 9 to be installed. Release the thrust on the pressure plate 44, and under the action of the return spring 43, the pushing device 4 resets, that is, the push plate 42 retracts to the bottom end of the stepped hole 11, and the winding and installation work of the scroll spring 8 is completed.
[0045] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.
Claims
1. A scroll spring winding and forming device, characterized in that, it includes a base and a winding part. A circular stepped hole is provided on one side of the base. An axial hole coaxial with the stepped hole is provided on the base. The winding part includes a reel and a scroll shaft fixedly connected thereto coaxially. The scroll shaft is rotatably connected in the axial hole. The reel is accommodated in the stepped hole. An annular accommodating cavity for accommodating the scroll spring is formed between the reel and the side wall of the stepped hole. A side groove penetrating the base is provided on the side wall of the stepped hole in the radial direction. A groove is provided on the outer edge of the reel along its axial direction; a scroll shaft self-locking device for the one-way rotation of the scroll shaft is provided between the scroll shaft and the base; a pushing device for pushing the scroll spring out of the annular accommodating cavity is provided on the base.
2. The scroll spring winding and forming device according to claim 1, characterized in that, the scroll shaft self-locking device includes a ratchet wheel, a pawl and a pawl driving part. The ratchet wheel is located on the side of the base away from the stepped hole. The ratchet wheel is clamped on the scroll shaft. The pawl is rotatably connected to the base and meshes with the ratchet wheel. The pawl driving part includes a support seat fixed on the surface of the base. A compression spring is clamped between the support seat and the pawl. A limit post for restricting the movement of the pawl is provided on the base on the side of the pawl away from the compression spring.
3. The scroll spring winding and forming device according to claim 2, characterized in that, a retaining ring is sleeved on the scroll shaft on the side of the ratchet wheel away from the stepped hole. A through hole is provided on the retaining ring in the radial direction. A positioning screw screwed to the scroll shaft is provided in the through hole.
4. The scroll spring winding and forming device according to claim 1, characterized in that, the pushing device includes a push rod, a push plate, a return spring and a pressure plate. At least two push rods are provided and are evenly distributed along the circumferential direction of the annular accommodating cavity. The push rods penetrate and slide on the base. The push plate is located in the annular accommodating cavity and is fixedly connected to the corresponding push rod. The other end of the push rod is fixedly connected to the pressure plate. A return spring is sleeved on the push rod between the base and the pressure plate.
5. The scroll spring winding and forming method according to claim 4, characterized in that, there are 6 push rods, and the corresponding push plates and return springs are both 6.
6. The scroll spring winding and forming device according to claim 4, characterized in that, a relief groove for the scroll shaft and the scroll shaft self-locking device to pass through is provided on the pressure plate.
7. The scroll spring winding and forming device according to claim 3, characterized in that, the push plate is in a disc shape or a sector ring shape, and the width of the push plate is adapted to the width of the annular accommodating cavity.
8. The scroll spring winding and forming device according to claim 1, characterized in that, a bearing is sleeved on the scroll shaft. A bearing seat is provided at the axial hole of the base. The outer ring of the bearing is matched with the bearing seat, and the inner ring of the bearing is matched with the scroll shaft.
9. The scroll spring winding and forming device according to claim 1, characterized in that, a transmission rod is clamped at the end of the scroll shaft.
10. A scroll spring winding and installation method, using the scroll spring winding and forming device according to any one of claims 1-9, characterized in that, it includes the following steps: a. Winding of the scroll spring Insert the scroll spring into the side groove, and make the hook at one end of the scroll spring located outside the base. The hook at the other end of the scroll spring is embedded in the groove. Drive the reel to rotate, drive the spool to rotate and wind the scroll spring around the spool. After the scroll spring reaches the specified number of winding turns, stop driving the reel, and the reel stops moving under the action of the reel self-locking device. b. Installation of the scroll spring Align and fix the product to be installed with the stepped hole of the base, and insert the hook of the scroll spring located outside the base into the shaft rod of the product to be installed. Apply a force to the pressure plate in the direction of the scroll spring. The pressure plate drives the push plate through the push rod to push the scroll spring out of the annular accommodating cavity and press it into the product to be installed. Release the thrust on the pressure plate, and under the action of the return spring, the pushing device resets to complete the winding and installation work of the scroll spring.