A seal ring spinning forming apparatus
By using the meshing of transmission gears and racks and the design of auxiliary clamping wheels, the problem of the sealing ring spinning forming device being unable to limit swaying in the front and back directions was solved, achieving higher forming accuracy and lower scrap rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUXI WEIYIFA PRECISION MACHINERY
- Filing Date
- 2026-04-13
- Publication Date
- 2026-06-26
AI Technical Summary
Existing sealing ring spinning forming equipment cannot effectively limit the swaying and displacement of the metal ring in the front and back directions during the spinning process, resulting in a high scrap rate.
The system employs a meshing engagement of transmission gears and racks, a threaded connection between the auxiliary support shaft and the auxiliary clamping wheel, and incorporates limiting components and ball bearings to clamp and support the metal billet in the front-to-back direction, preventing swaying and displacement.
This improved the forming accuracy of the sealing ring and reduced the scrap rate, ensuring the stability and consistency of the spinning process.
Smart Images
Figure CN122007234B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of sealing ring processing technology, and specifically relates to a sealing ring spinning forming equipment. Background Technology
[0002] C-type metal sealing rings are a common type of elastic metal sealing ring. Their cross-section is C-shaped, and they utilize their own compression resilience to ensure their sealing surface fits against the sealing surface of the corresponding component. They are used for axial sealing of the end face perpendicular to the axis of rotation to prevent fluid leakage. The spinning forming process for sealing rings uses a spinning process to process metal blanks into sealing rings of a specific shape. Its core principle is that a spindle drives the blank to rotate, while a spinning wheel moves along a preset trajectory and applies pressure, causing the material to undergo continuous plastic deformation point by point, ultimately forming a sealing ring that meets the design requirements.
[0003] A metal sealing ring forming fixture is disclosed in Chinese patent with authorization announcement number CN112642912B, including a spinning fixture and a rolling cutter. The spinning fixture is used to clamp the semi-finished ring plate to be processed, and the rolling cutter is used to apply the pressure required for spinning processing to the clamped semi-finished ring plate. The spinning fixture includes a clamping wheel axle assembly, a mold assembly, and a clamping assembly. The mold assembly is detachably set on the clamping wheel axle assembly.
[0004] Existing sealing ring spinning forming equipment typically has support members on both sides of the sealing ring to support the metal ring and prevent it from swaying left and right during spinning, which would cause spinning deviation. However, existing support members can only limit the lateral sway of the metal ring, but cannot limit its sway in the front-back direction. As a result, the metal ring will shift in the front-back direction during spinning, thus producing defective products. Summary of the Invention
[0005] The purpose of this invention is to provide a sealing ring spinning forming equipment, which aims to solve the problem in the prior art that the support can only limit the left and right sway of the metal ring, but cannot limit its sway in the front and back direction, thereby avoiding the generation of defective products due to the front and back displacement of the metal ring during the spinning process.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a sealing ring spinning forming device, comprising a lower mold assembly, an upper mold assembly, and auxiliary forming assemblies installed on the left and right sides of the lower mold assembly. The auxiliary forming assemblies include adjusting support rods and auxiliary support members. The upper mold assembly includes an upper mold base. The left and right sides of the front wall of the upper mold base are provided with transmission grooves extending in the vertical direction. The lower side of the transmission grooves penetrates the upper mold base. A transmission rack extending in the vertical direction is fixedly installed on the side of the two transmission grooves that are close to each other.
[0007] The auxiliary support component includes an auxiliary support shaft rotatably mounted on one end of the adjusting support rod. The axis of the auxiliary support shaft extends in the front-to-back direction. The rear end of the auxiliary support shaft passes through the adjusting support rod and is sleeved with a transmission gear. The transmission gear is located in the transmission groove and meshes with the transmission rack. A torsion spring is provided between the inner wall of the transmission gear and the outer wall of the adjusting support rod. Two auxiliary clamping wheels are threaded onto the outer wall of the auxiliary support shaft. When the adjusting support rod rotates forward or backward, the two auxiliary clamping wheels can move closer to or further away from each other.
[0008] The beneficial effects of this invention are that, through the meshing of the transmission gear and the transmission rack, when the upper mold base descends, the auxiliary support shafts located on the left and right sides of the lower mold assembly rotate in opposite directions under the meshing action of the transmission gear and the transmission rack, causing the two auxiliary clamping wheels to move closer to each other, thereby clamping the metal billet in the front-back direction, effectively constraining the displacement and vibration of the metal billet in the front-back direction. The auxiliary support shafts located on the left and right sides of the lower mold assembly, in conjunction with the spinning die, provide effective support for the metal billet, preventing it from vibrating and displacing in the left-right direction. This device can not only limit the left-right swaying of the metal billet, but also limit its vibration and displacement in the front-back direction, which has the advantages of improving molding accuracy and reducing scrap rate.
[0009] Both ends of the outer wall of the auxiliary support shaft are threaded, and the two threads rotate in opposite directions. The two auxiliary clamping wheels are connected to the auxiliary support shaft through the threads. A limiting member extending in the front and back direction is fixedly installed on one end of the adjusting support rod. The front end of the limiting member slides through the two auxiliary clamping wheels.
[0010] Its effect is that by setting a limiting component, it can provide guidance and limit for the auxiliary clamping wheel, preventing it from rotating unnecessarily or deviating from the preset trajectory during axial movement, thereby ensuring the accuracy and stability of the clamping action of the auxiliary clamping wheel.
[0011] Ball bearings are installed on the edges of the two auxiliary clamping wheels that are close to each other. Each auxiliary clamping wheel has multiple balls, which are evenly distributed along the circumference of the auxiliary clamping wheel.
[0012] Its effect is that by setting multiple balls, rolling friction can be formed between the auxiliary clamping wheels and the metal billet workpiece, so that after the two auxiliary clamping wheels clamp the metal billet, they will not affect the rotation of the metal billet, nor will they affect the clamping effect of the auxiliary clamping wheels, so that the metal billet cannot vibrate or move in the front and back directions.
[0013] It also includes a base and an upper mold fixing assembly. The lower mold assembly is fixedly installed on the top of the base, the upper mold assembly is installed on the top of the lower mold assembly, the upper mold fixing assembly is located above the upper mold assembly, and a drive assembly for driving the upper mold assembly to move vertically is installed on the upper mold fixing assembly.
[0014] The auxiliary molding assembly also includes mounting columns fixedly installed on the left and right sides of the top of the base. Mounting seats are fixedly sleeved on the outer wall of the mounting columns. Mounting shafts with axes extending in the front-back direction are fixedly installed on the front outer wall of the mounting seats for mounting adjustment support rods. The end of the adjustment support rod away from the auxiliary support component has a mounting hole with an axis extending in the front-back direction. The mounting shaft is sleeved in the mounting hole, thereby fixing the adjustment support rod on the mounting seat.
[0015] Its effect is that by setting up mounting columns, mounting seats, and mounting shafts, it ensures that the adjusting support rod can always maintain the stability and positioning accuracy of its axis when rotating to adjust the spacing of the auxiliary clamping wheels, effectively avoiding shaking or deviation caused by unstable installation.
[0016] The upper mold fixing component includes a top plate, which is set parallel to the top surface of the base. Support columns are fixedly installed between the four bottom corners of the top plate and the four top corners of the base.
[0017] The drive assembly includes a transmission plate located between the top plate and the upper mold assembly, and a drive component mounted on the top plate. The transmission plate and the top surface of the base are arranged parallel to each other. At least two transmission columns are fixedly connected between the bottom of the transmission plate and the top of the upper mold assembly. Multiple transmission columns extend along the circumference of the upper mold assembly. A transmission screw with its axis extending vertically is installed on the top of the transmission plate. The top end of the transmission screw rotates through the top plate and is connected to the output end of the drive component. The bottom end of the transmission screw passes through the transmission plate and is threadedly connected to it.
[0018] The driving component is a motor. A mounting plate for mounting the motor is fixedly installed on the outer wall of the top plate. A transmission component, which is a coupling, is connected between the output shaft of the mounting plate and the top end of the transmission screw.
[0019] The lower die assembly includes a lower die base, a lower die spindle with its axis extending in the front-rear direction is rotatably mounted on the front side of the outer wall of the lower die base, and a spinning die is mounted on the outer wall of the lower die spindle.
[0020] The upper die base has an upper die spindle rotatably mounted on the front side of its outer wall, with its axis extending in the front-back direction. The upper die spindle is located directly above the lower die spindle. A spinning punch is mounted on the outer wall of the upper die spindle, with the spinning punch located directly above the spinning die. At least two limiting guide holes are provided at the top edge of the upper die base, and multiple limiting guide holes are evenly distributed along the circumference of the upper die base. Multiple limiting guide posts with their axes extending in the vertical direction are fixedly installed at the top edge of the lower die base. The number of limiting guide posts is the same as the number of limiting guide holes, and the multiple limiting guide posts are slidably sleeved in the multiple limiting guide holes.
[0021] The effect is that by opening limiting guide holes at the top edge of the upper die base and fixing the same number of limiting guide pins with vertically extending axes at the top edge of the lower die base, and allowing the limiting guide pins to slide within the limiting guide holes, a precise guiding mechanism is formed. This guiding mechanism effectively limits the horizontal offset and sway of the upper die assembly during vertical lifting, ensuring that the upper die spindle and its spinning punch are always precisely aligned with the lower die spindle and its spinning die. Therefore, during the spinning process, the relative positional accuracy between the upper and lower die assemblies is significantly improved, avoiding molding defects caused by misalignment, thus ensuring the molding quality and consistency of the sealing ring, and improving the operational stability and production efficiency of the equipment.
[0022] Compared with the prior art, the beneficial effects of the present invention are:
[0023] Through the meshing of the transmission gear and the transmission rack, when the upper die base descends, the auxiliary support shafts located on the left and right sides of the lower die assembly rotate in opposite directions under the meshing action of the transmission gear and the transmission rack, causing the two auxiliary clamping wheels to move closer to each other, thereby clamping the metal billet in the front-back direction. This effectively constrains the displacement and vibration of the metal billet in the front-back direction. The auxiliary support shafts located on the left and right sides of the lower die assembly, together with the spinning die, provide effective support for the metal billet, preventing it from vibrating and displacing in the left and right direction. This device can not only limit the left and right swaying of the metal billet, but also limit its vibration and displacement in the front-back direction, which has the advantages of improving forming accuracy and reducing scrap rate. Attached Figure Description
[0024] Figure 1 This is a three-dimensional structural diagram of the spinning forming equipment in this invention;
[0025] Figure 2 This is a schematic diagram of the main structure of the spinning forming equipment in this invention;
[0026] Figure 3 This is a schematic diagram of the side structure of the spinning forming equipment in this invention;
[0027] Figure 4 This is a schematic diagram of the main structure of the upper mold component in this invention;
[0028] Figure 5 This is a top view of the upper mold assembly in this invention;
[0029] Figure 6 This is a schematic diagram of the main structure of the lower mold assembly in this invention;
[0030] Figure 7 This is a top view of the lower mold assembly in this invention.
[0031] Figure 8 This is a three-dimensional structural diagram of the auxiliary molding component in this invention;
[0032] Figure 9 This is a side view of the auxiliary molding component in this invention.
[0033] Figure 10 This is a rear view schematic diagram of the auxiliary molding component in this invention.
[0034] In the diagram: 1. Base; 11. Base plate; 12. Lower die fixing plate; 2. Lower die assembly; 21. Lower die holder; 22. Lower die spindle; 23. Spinning die; 3. Upper die assembly; 31. Upper die holder; 311. Limiting guide hole; 32. Upper die spindle; 33. Spinning punch; 34. Transmission groove; 35. Transmission rack; 4. Upper die fixing assembly; 41. Top plate; 42. Support column; 5. Drive assembly; 51. Transmission plate; 52. Transmission column; 53. 54. Drive component; 541. Fixing plate; 542. Transmission component; 55. Limiting guide post; 6. Auxiliary molding assembly; 61. Mounting post; 62. Mounting base; 63. Adjusting support rod; 631. Mounting hole; 64. Mounting shaft; 65. Auxiliary support component; 651. Auxiliary support shaft; 652. Auxiliary clamping wheel; 6521. Ball bearing; 653. Limiting component; 654. Transmission gear; 655. Torsion spring; 7. Sealing ring. Detailed Implementation
[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
[0036] Please see Figures 1-9 This invention provides the following technical solution: a sealing ring spinning forming device, comprising a base 1, a lower die assembly 2, an upper die assembly 3, and auxiliary forming components 6 installed on the left and right sides of the lower die assembly 2. The lower die assembly 2 is used to support the metal blank to be formed, and the upper die assembly 3 cooperates with the lower die assembly 2 to complete the spinning forming process. The auxiliary forming components 6 provide support and positioning for the metal blank during the spinning forming process, ensuring the stability and accuracy of the forming process.
[0037] refer to Figure 2 As shown, the base 1 includes a base plate 11 and a lower mold fixing plate 12. The lower mold fixing plate 12 is fixedly installed on the top of the base plate 11 and is used to install the lower mold assembly 2 and the auxiliary molding assembly 6. The base 1 serves as the basic support structure of the equipment. Its base plate 11 and lower mold fixing plate 12 are made of high-strength and high-rigidity materials, such as cast iron or welded steel plate structures, to ensure the stability and vibration resistance of the equipment during operation.
[0038] refer to Figure 2 , Figure 4 and Figure 5As shown, the lower mold assembly 2 is fixedly installed on the top of the base 1, that is, on the top surface of the lower mold fixing plate 12. The top of the lower mold fixing plate 12 has a precise mounting surface, and the lower mold assembly 2 can be firmly fixed by means of bolt connection, pin positioning and bolt tightening, or welding.
[0039] The lower mold assembly 2 includes a lower mold base 21, and a lower mold spindle 22 with its axis extending in the front-rear direction is rotatably mounted on the front side of the outer wall of the lower mold base 21. A spinning die 23 is mounted on the outer wall of the lower mold spindle 22.
[0040] The lower die holder 21 is used to support the spinning die 23 and the lower die spindle 22, and to securely fix them to the top of the base 1, ensuring that the lower die part has sufficient structural rigidity and stability during the spinning process. The lower die holder 21 is made of high-strength, high-rigidity materials, such as alloy steel or cast iron, to withstand the pressure and torque generated during the spinning process and to ensure that it does not deform during long-term use.
[0041] The lower die spindle 22 is the core component for mounting the spinning die 23. Its axis extends in the front-rear direction and is rotatably mounted on the front outer wall of the lower die base 21. This mounting method allows the lower die spindle 22 to rotate around its own axis, driving the spinning die 23 to rotate synchronously. The rotation of the lower die spindle 22 can be powered by an independent drive device (such as a motor), typically supported by precision bearings to ensure smooth rotation, high precision, and low frictional loss, thereby improving molding quality and equipment lifespan.
[0042] The spinning die 23 is the mold part that directly contacts the material of the sealing ring 7 to be formed, and is installed on the outer wall of the lower die spindle 22. The spinning die 23 is made of high-hardness, wear-resistant tool steel, and its working surface can be precision machined, hardened, or coated to extend its service life and improve the surface quality of the formed part.
[0043] refer to Figure 2 , Figure 6 and Figure 7 As shown, the upper mold assembly 3 includes an upper mold base 31, on which an upper mold spindle 32 with its axis extending in the front-rear direction is rotatably mounted on the front outer wall. The upper mold spindle 32 is located directly above the lower mold spindle 22, and a spinning punch 33 is mounted on its outer wall, with the spinning punch 33 and spinning die 23 arranged vertically correspondingly. On both the left and right sides of the front wall of the upper mold base 31, vertically extending transmission grooves 34 are provided, with the lower end of each transmission groove 34 penetrating the upper mold base 31. Vertically extending transmission racks 35 are fixedly mounted on adjacent sides of the two transmission grooves 34.
[0044] The upper die base 31 serves as the main structure of the upper die assembly 3, used for mounting and fixing other components. The upper die spindle 32 is rotatably mounted on the front outer wall of the upper die base 31 via bearings or other means, with its axis extending in the front-rear direction to ensure stable rotation and low frictional loss. The upper die spindle 32 mainly serves as a support and drive component for the spinning punch 33, working in conjunction with the lower die spindle 22 to complete the spinning forming of the sealing ring 7.
[0045] The spinning punch 33 is mounted on the outer wall of the upper die spindle 32 and is made of high-strength, wear-resistant tool steel, and has undergone precision machining and heat treatment. During the forming process, the spinning punch 33 and the spinning die 23 together apply pressure and rotational force to the workpiece, causing it to plastically deform and form the required sealing ring 7 shape.
[0046] The transmission grooves 34 on the left and right sides of the front wall of the upper mold base 31 are designed to pass through the lower end, which facilitates the connection and cooperation between the transmission components and the external mechanism.
[0047] refer to Figure 2 As shown, the upper mold fixing assembly 4 is located above the upper mold assembly 3, used to support and guide the vertical movement of the upper mold assembly 3, and to carry the drive assembly 5. This assembly provides a stable mounting platform for the drive assembly 5, enabling precise vertical movement control of the upper mold assembly 3. The upper mold fixing assembly 4 includes a top plate 41, which is parallel to the top surface of the base 1. Support columns 42 are fixedly installed between the four bottom corners of the top plate 41 and the four top corners of the base 1.
[0048] The top plate 41, as the core component of the upper mold fixing assembly 4, adopts a flat plate structure with sufficient rigidity and strength. Its main functions include serving as a load-bearing platform to install the drive assembly 5 and related components, and bearing the loads generated during the movement of the upper mold assembly 3.
[0049] The top plate 41 is made of high-strength steel, cast iron, or aluminum alloy, and is precision machined to ensure surface flatness and dimensional accuracy, guaranteeing the overall stability and positioning accuracy of the component. The parallel arrangement of the top plate 41 and the base 1 provides a precise reference plane, avoiding deviations in the movement trajectory and ensuring the stability of the spinning process and the precision of the product.
[0050] The support column 42 is a structural component connecting the top plate 41 and the base 1, and is a columnar member with high compressive and bending resistance. The support column 42 forms a four-point support frame structure between the four bottom corners of the top plate 41 and the four top corners of the base 1, achieving a rigid connection through bolting, welding, or integral casting. This design effectively resists the vertical load, lateral force, and torque generated during the spinning process. The support column 42 is made of high-strength structural steel, and its length and verticality are precisely controlled to ensure the accurate position and orientation of the top plate 41.
[0051] refer to Figure 2 and Figure 3As shown, the drive assembly 5 is mounted on the top plate 41 of the upper mold fixing assembly 4, and is used to drive the upper mold assembly 3 to move vertically. The drive assembly 5 is the core for achieving precise vertical lifting and lowering of the upper mold assembly 3, and is crucial for controlling the pressure and clearance during the molding process. The drive assembly 5 can take various forms, such as hydraulic cylinders, pneumatic cylinders, servo motors combined with ball screws, gear and rack mechanisms, etc. Its installation position and method should ensure that the output force can be applied stably and evenly to the upper mold assembly 3, avoiding uneven loading.
[0052] In this embodiment, the driving assembly 5 includes a transmission plate 51 located between the top plate 41 and the upper mold assembly 3, and a driving component 54 mounted on the top plate 41. The transmission plate 51 and the top surface of the base 1 are arranged parallel to each other. At least two transmission columns 52 are fixedly connected between the bottom of the transmission plate 51 and the top of the upper mold assembly 3. The multiple transmission columns 52 extend circumferentially along the upper mold assembly 3. A transmission screw 53 with its axis extending vertically is mounted on the top of the transmission plate 51. The top end of the transmission screw 53 rotates through the top plate 41 and then connects with the driving component 54. The output end of 4 is connected to the transmission. The bottom end of the transmission screw 53 passes through the transmission plate 51 and is threadedly connected to it. At least two limiting guide holes 311 are provided at the top edge of the upper mold base 31. Multiple limiting guide holes 311 are evenly distributed along the circumference of the upper mold base 31. Multiple limiting guide pins 55 with their axes extending vertically are fixedly installed at the top edge of the lower mold base 21. The number of limiting guide pins 55 is the same as the number of limiting guide holes 311. Multiple limiting guide pins 55 are slidably sleeved in multiple limiting guide holes 311.
[0053] The transmission column 52 is a structural component connecting the bottom of the transmission plate 51 and the top of the upper mold assembly 3. Its core function is to accurately transmit the vertical movement of the transmission plate 51 to the upper mold assembly 3. This application provides at least two transmission columns 52, evenly distributed along the circumference of the upper mold assembly 3. This multi-point connection and support method effectively disperses the vertical load, preventing the upper mold assembly 3 from tilting, swaying, or jamming during lifting, thus ensuring the smoothness and verticality of the upper mold assembly 3's movement. The transmission column 52 is typically made of high-strength, wear-resistant metal materials, such as precision-machined and heat-treated alloy steel, to ensure it can withstand repeated vertical movements and forming pressures during long-term operation. The connection between the transmission column 52 and the transmission plate 51 and the upper mold assembly 3 can be achieved through bolting, welding, or fixing with pins to ensure the strength and rigidity of the connection.
[0054] The transmission screw 53 is the core component for converting rotary motion into linear motion. Its axis extends vertically, aligning with the vertical movement direction of the upper mold assembly 3. The top end of the transmission screw 53 is designed to rotatably penetrate the top plate 41 and connect to the output end of the drive component 54, meaning that the rotational torque generated by the drive component 54 can be directly and efficiently transmitted to the transmission screw 53. The bottom end of the transmission screw 53 penetrates the transmission plate 51 and is threadedly connected to it. When the drive component 54 drives the transmission screw 53 to rotate, due to the precise fit of the threads, the transmission plate 51 (and the upper mold assembly 3 connected via the transmission column 52) will move precisely vertically along the axial direction of the transmission screw 53. The transmission screw 53 can employ various thread types, such as trapezoidal threads, ball screws, or ACME threads.
[0055] The drive component 54 is the power source for the entire vertical lifting mechanism. Its function is to drive the transmission screw 53 to rotate, thereby achieving precise vertical movement of the upper mold assembly 3. The drive component 54 can be of different types depending on actual needs. For example, it can be a motor (such as a stepper motor, servo motor, or AC motor), a hydraulic motor, or a pneumatic motor.
[0056] In this embodiment, the driving component 54 is a motor. The motor has the advantages of fast response speed, high control accuracy and easy automation control, which can ensure that the upper mold assembly 3 achieves precise vertical positioning and movement during the spinning process. A fixing plate 541 for mounting the motor is fixedly installed on the outer wall of the top plate 41. A transmission component 542 is connected between the output shaft of the fixing plate 541 and the top end of the transmission screw 53. The transmission component 542 is a coupling.
[0057] refer to Figure 2 , Figures 8-10 As shown, the auxiliary forming component 6 provides support and positioning for the metal blank during the spin forming process to ensure the stability and accuracy of the forming process. The auxiliary forming component 6 includes a mounting post 61, a mounting base 62, an adjusting support rod 63, a mounting shaft 64, and an auxiliary support component 65. The mounting post 61 is fixedly installed on the left and right sides of the top of the base 1. The mounting base 62 is fixedly sleeved on the outer wall of the mounting post 61. The mounting shaft 64 is fixedly installed on the front outer wall of the mounting base 62, and its axis extends in the front-rear direction. One end of the adjusting support rod 63 has a mounting hole 631 with its axis extending in the front-rear direction. The mounting shaft 64 is sleeved in the mounting hole 631, thereby fixing the adjusting support rod 63 to the mounting base 62. The auxiliary support component 65 is installed on the other end of the adjusting support rod 63.
[0058] Mounting column 61 is a structural component used to support and fix auxiliary molding component 6. It is a columnar component with certain strength and rigidity, made of solid or hollow metal, and is firmly installed on the top left and right sides of the base 1 by bolts or welding to provide a stable base.
[0059] Mounting base 62 is an intermediate structure connecting mounting post 61 and mounting shaft 64, used to support and position mounting shaft 64. Mounting base 62 is a metal block or bracket with a corresponding shape and size, whose internal or external structure is tightly fitted and fixed to the outer wall of mounting post 61, achieved through interference fit, key connection or bolt connection. At the same time, its front outer wall provides a stable mounting interface for fixing mounting shaft 64.
[0060] Mounting shaft 64 is a key component used to support and position the adjusting support rod 63, with its axis extending in the front-rear direction. Mounting shaft 64 is a precision-machined cylindrical rod, one end of which is fixedly mounted on the front outer wall of mounting base 62 by press-fitting, threaded connection, or welding. Its surface is hardened or coated to improve wear resistance and reduce the coefficient of friction.
[0061] Mounting hole 631 is a precision-machined round hole that mates with mounting shaft 64, its inner diameter matching the outer diameter of mounting shaft 64 to achieve a sliding or rotational fit. Mounting shaft 64 is fitted into mounting hole 631, fixing adjusting support rod 63 to mounting base 62. This connection method ensures the adjusting support rod 63 maintains a stable axis during rotational adjustment, preventing radial or axial displacement and guaranteeing adjustment accuracy. To ensure smooth rotation and reduce friction, a bearing can be bushed inside mounting hole 631, or lubricant can be applied between mounting shaft 64 and mounting hole 631.
[0062] The auxiliary support 65 acts directly on the sealing ring 7 to be formed, providing necessary support and clamping force. The auxiliary support 65 includes an auxiliary support shaft 651 rotatably mounted on one end of the adjusting support rod 63, with its axis extending in the front-rear direction. The rear end of the auxiliary support shaft 651 passes through the adjusting support rod 63 and is fitted with a transmission gear 654, which is located within the transmission groove 34 and meshes with a transmission rack 35. A torsion spring 655 is provided between the inner wall of the transmission gear 654 and the outer wall of the adjusting support rod 63.
[0063] Two auxiliary clamping wheels 652 are threaded onto the outer wall of the auxiliary support shaft 651. When the adjusting support rod 63 rotates forward or backward, the two auxiliary clamping wheels 652 can move closer or further apart. Both ends of the outer wall of the auxiliary support shaft 651 are threaded, and the two threads rotate in opposite directions. The two auxiliary clamping wheels 652 are connected to the auxiliary support shaft 651 via threads. A limiting member 653 extending in the front-rear direction is fixedly installed on the front side of one end of the adjusting support rod 63. The front end of the limiting member 653 slides through the two auxiliary clamping wheels 652 to prevent the auxiliary clamping wheels 652 from rotating on the auxiliary support shaft 651.
[0064] Each of the two auxiliary clamping wheels 652 has a ball bearing 6521 installed on one side edge that is close to each other. Each auxiliary clamping wheel 652 has multiple balls bearing 6521, which are evenly distributed along the circumference of the auxiliary clamping wheel 652.
[0065] The sealing ring 7 is installed on the spinning punch 33. The bottom of the sealing ring 7 abuts against the top of the groove of the spinning die 23, and the left and right ends of the sealing ring 7 abut against the two auxiliary support shafts 651 respectively.
[0066] The implementation principle of this invention is as follows: The drive assembly 5 is activated, causing the upper mold assembly 3 to rise. At this time, the transmission rack 35 in the transmission groove 34 of the upper mold base 31 rises along with the upper mold base 31, driving the transmission gear 654 to rotate. The transmission gear 654, through a torsion spring 655, drives the auxiliary support shaft 651 to rotate. The auxiliary support shaft 651, through a threaded connection with two auxiliary clamping wheels 652, causes the two auxiliary clamping wheels 652 to move away from each other along the axial direction of the auxiliary support shaft 651.
[0067] The operator places the metal billet onto the spinning punch 33, with the bottom of the billet abutting the top of the groove in the spinning die 23, and the left and right ends of the billet abutting against the two auxiliary support shafts 651 respectively. Then, the drive assembly 5 lowers the upper die assembly 3. At this time, the transmission rack 35 in the transmission groove 34 of the upper die base 31 drives the transmission gear 654 to rotate in the opposite direction as the upper die base 31 descends. The transmission gear 654 drives the auxiliary support shaft 651 to rotate in the opposite direction via a torsion spring 655. The auxiliary support shaft 651 is threadedly connected to two auxiliary clamping wheels 652, causing the two auxiliary clamping wheels 652 to move closer together along the axis of the auxiliary support shaft 651 and clamp the metal billet, preventing it from wobbling back and forth during the spinning process.
[0068] Once clamping is complete, as the upper die holder 31 continues to descend, the two auxiliary clamping wheels 652 can no longer approach each other, and the torsion spring 655 can no longer drive the auxiliary support shaft 651 to rotate and begins to compress itself, thus avoiding damage to the metal billet due to excessive clamping force.
[0069] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention.
Claims
1. A sealing ring spinning forming device, comprising a lower mold assembly, an upper mold assembly, and auxiliary forming assemblies installed on the left and right sides of the lower mold assembly, wherein the auxiliary forming assemblies include adjusting support rods and auxiliary support components, characterized in that, The upper mold assembly includes an upper mold base. The upper mold base has vertically extending transmission grooves on both the left and right sides of its front wall. The lower side of the transmission grooves penetrates the upper mold base. A vertically extending transmission rack is fixedly installed on the side of each of the two transmission grooves that are close to each other. The auxiliary support component includes an auxiliary support shaft rotatably mounted on one end of the adjusting support rod. The axis of the auxiliary support shaft extends in the front-rear direction. The rear end of the auxiliary support shaft passes through the adjusting support rod and is sleeved with a transmission gear. The transmission gear is located in the transmission groove and meshes with the transmission rack. A torsion spring is provided between the inner wall of the transmission gear and the outer wall of the adjusting support rod. Two auxiliary clamping wheels are threaded onto the outer wall of the auxiliary support shaft. When the auxiliary support shaft rotates in the forward or reverse direction, the two auxiliary clamping wheels can move closer to or further away from each other. Both ends of the outer wall of the auxiliary support shaft are threaded, and the two threads are in opposite directions. The two auxiliary clamping wheels are connected to the auxiliary support shaft through the threads. A limiting member extending in the front and rear directions is fixedly installed on the front side of one end of the adjusting support rod. The front end of the limiting member slides through the two auxiliary clamping wheels. Each of the two auxiliary clamping wheels has balls installed on one side edge that is close to each other. Each auxiliary clamping wheel has multiple balls, which are evenly distributed along the circumference of the auxiliary clamping wheel.
2. The sealing ring spinning forming equipment according to claim 1, characterized in that: It also includes a base and an upper mold fixing assembly. The lower mold assembly is fixedly installed on the top of the base, the upper mold assembly is installed on the top of the lower mold assembly, the upper mold fixing assembly is located above the upper mold assembly, and a drive assembly for driving the upper mold assembly to move vertically is installed on the upper mold fixing assembly.
3. The sealing ring spinning forming equipment according to claim 2, characterized in that: The auxiliary molding assembly also includes mounting columns fixedly installed on the left and right sides of the top of the base. A mounting seat is fixedly sleeved on the outer wall of the mounting column. A mounting shaft with an axis extending in the front-back direction is fixedly installed on the front outer wall of the mounting seat for installing an adjustment support rod. The end of the adjustment support rod away from the auxiliary support is provided with a mounting hole with an axis extending in the front-back direction. The mounting shaft is sleeved in the mounting hole, thereby fixing the adjustment support rod on the mounting seat.
4. The sealing ring spinning forming equipment according to claim 2, characterized in that: The upper mold fixing assembly includes a top plate, which is arranged parallel to the top surface of the base, and support columns are fixedly installed between the four bottom corners of the top plate and the four top corners of the base.
5. The sealing ring spinning forming equipment according to claim 4, characterized in that: The drive assembly includes a transmission plate located between the top plate and the upper mold assembly, and a drive component mounted on the top plate. The transmission plate and the top surface of the base are arranged parallel to each other. At least two transmission columns are fixedly connected between the bottom of the transmission plate and the top of the upper mold assembly. Multiple transmission columns extend circumferentially along the upper mold assembly. A transmission screw with its axis extending vertically is installed on the top of the transmission plate. The top end of the transmission screw rotates through the top plate and is connected to the output end of the drive component. The bottom end of the transmission screw passes through the transmission plate and is threadedly connected to it.
6. The sealing ring spinning forming equipment according to claim 5, characterized in that: The driving component is a motor. A mounting plate for mounting the motor is fixedly installed on the outer wall of the top plate. A transmission component, which is a coupling, is connected between the output shaft of the mounting plate and the top end of the transmission screw.
7. A sealing ring spinning forming equipment according to claim 5, characterized in that: The lower die assembly includes a lower die base, and a lower die spindle with its axis extending in the front-rear direction is rotatably mounted on the front side of the outer wall of the lower die base. A spinning die is mounted on the outer wall of the lower die spindle.
8. The sealing ring spinning forming equipment according to claim 7, characterized in that: The upper die base has an upper die spindle rotatably mounted on the front side of its outer wall, with its axis extending in the front-rear direction. The upper die spindle is located directly above the lower die spindle. A spinning punch is mounted on the outer wall of the upper die spindle, with the spinning punch located directly above the spinning die. At least two limiting guide holes are provided at the top edge of the upper die base, and the multiple limiting guide holes are evenly distributed along the circumference of the upper die base. The lower die base has multiple limiting guide posts fixedly mounted at its top edge, with their axes extending in the vertical direction. The number of limiting guide posts is the same as the number of limiting guide holes, and the multiple limiting guide posts are slidably sleeved in the multiple limiting guide holes.