Large end socket spinning forming equipment

Abstract

The invention relates to the technical field of end socket machining equipment, in particular to large end socket spinning forming equipment. Comprising a bottom frame, a machine frame is installed on the bottom frame, a lower spinning roller and an upper spinning roller are arranged on the machine frame, the bottom frame is provided with a first conveying device, the machine frame is provided with a second conveying device, the second conveying device is fixedly connected with a hydraulic push rod, the telescopic end of the hydraulic push rod is fixedly connected with an assembling block, and the assembling block and the first conveying device are both rotationally connected with clamping blocks. The assembling block is fixedly connected with bearing frames distributed in a circumferential array mode, the bearing frames are in sliding connection with a sliding frame, the sliding frame is rotationally connected with a rotating sleeve, the rotating sleeve is in sliding connection with a sliding shell, the sliding shell is in sliding connection with a piston rod, a spring is arranged between the piston rod and the sliding shell, and the piston rod is fixedly connected with a fixing frame. According to the device, circumferential multi-point type auxiliary fixing is conducted on the end socket through the fixing frame, the probability that polarization deflects to the rotating axis of the end socket during traditional single-point type fixing is reduced, and the stability of equipment during working is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of head processing equipment, and in particular to a large head spinning forming equipment. Background Art

[0002] A head spinning machine is a mechanical device used to manufacture pressure vessel heads. Its working principle is to gradually process metal plates or blanks into the required shape by rotation and applying pressure. During the spinning process of the head spinning machine, the metal material will undergo plastic deformation, resulting in uneven distribution of thickness or shape. This non-uniformity will cause changes in the mass distribution of the workpiece itself (i.e., the head). Since the head is constantly rotating, the uneven mass distribution will generate an eccentric force, thereby causing eccentric vibration. And this vibration is mostly small-amplitude vibration. Especially in the processing of large-diameter or thin-walled heads, the non-uniformity of deformation is more likely to cause eccentric vibration. And due to the prior art mostly fixing at a single point in the center of the head, the appearance of polarization is likely to cause the rotation axis of the head to shift. Eccentric vibration will lead to uneven pressure distribution during the spinning process, affecting the forming accuracy and surface quality of the head. When the eccentric vibration is severe, the shift of the rotation axis will cause vibration of the main shaft and fixture of the spinning machine, and will also cause equipment resonance, reducing the stability of the equipment, resulting in equipment damage or interruption of the processing process, having a two-way impact on economy and safety. Summary of the Invention

[0003] In order to overcome the above-mentioned drawbacks, the purpose of the present invention is to provide a large head spinning forming equipment.

[0004] The technical solution is as follows: A large head spinning forming equipment, including a chassis, a frame is installed on the chassis, a lower spinning wheel and an upper spinning wheel are arranged on the frame, a first conveying device is arranged on the chassis, a second conveying device is arranged on the frame, a hydraulic push rod is fixedly connected to the second conveying device, a telescopic end of the hydraulic push rod is fixedly connected to an assembly block, the second conveying device is slidably connected to the assembly block, clamping blocks are rotatably connected to both the assembly block and the first conveying device, a circumferentially arrayed bearing frame is fixedly connected to the assembly block, a sliding frame is slidably connected to the bearing frame, a rotating sleeve is rotatably connected to the sliding frame, a sliding shell is slidably connected to the rotating sleeve, a piston rod is slidably connected to the sliding shell, a spring is arranged between the piston rod and the sliding shell, a fixed frame is fixedly connected to the piston rod, and a one-way damping mechanism for providing one-way damping for the piston rod is arranged on the piston rod.

[0005] Preferably, the lower side of the fixed frame is fan-shaped, and the diameter of the circle where the arc edge on the side away from the clamping block is located is larger than the diameter of the circle where the arc edge on the side close to the clamping block is located.

[0006] Preferably, the one-way damping mechanism includes a flow guide member. Through holes are arranged on the piston rod in a circumferentially arrayed manner, and the flow guide members are arranged in the through holes on the piston rod in a circumferentially arrayed manner. The flow guide member is formed by splicing a front flow guide plate and a rear flow guide plate. After the front flow guide plate and the rear flow guide plate are spliced, a drainage channel is formed. The circumferentially arrayed flow guide members and the through holes on the piston rod jointly form a flow blocking round hole.

[0007] Preferably, the flow area of the flow blocking round hole is equal to the sum of the cross-sectional areas of the adjacent circumferentially arrayed drainage channels.

[0008] Preferably, the sliding shell is rotatably connected with a telescopic rod, and the telescopic rod is threadedly connected with the rotating sleeve.

[0009] Preferably, the rotating sleeve is fixedly connected with mirror-image fixed disks, and electromagnets are fixedly connected to one side of the fixed disks close to the bearing frame.

[0010] Preferably, a rotating ring is arranged on the piston rod, a driving module for driving the rotating ring to rotate is arranged in the piston rod, a circumferentially arrayed sealing plate is fixedly connected to the rotating ring, the piston rod is rotatably connected with a rotating frame, and the circumferentially arrayed sealing plates are fixedly connected to the rotating frame. The sealing plates are used for blocking the flow blocking round holes.

[0011] Preferably, the two opposite sliding shells are jointly communicated with a first communication pipe and a second communication pipe. The piston rod divides the sliding shell into a damping cavity and a reset cavity. The damping cavity and the reset cavity are mutually communicated through the flow blocking round holes on the piston rod. The first communication pipe is communicated with the reset cavity, and the second communication pipe is communicated with the damping cavity.

[0012] Preferably, there is also a temporary fixing mechanism with the same number as the fixed frame and used for assisting in fixing the head. The temporary fixing mechanism is arranged on the fixed frame. The temporary fixing mechanism includes a fastening frame. The fastening frame is slidably connected in the fixed frame. A spring is arranged between the fastening frame and the fixed frame. A limiting component for limiting the position of the fastening frame is arranged on the rotating ring.

[0013] Preferably, the limiting component includes symmetrically distributed limiting frames. The limiting frames are fixedly connected to the rotating ring. Both the piston rod and the fixed frame are slidably connected to the limiting frames. The fixed frame is fixedly connected with a limiting block. The limiting frames are used for limiting the position of the limiting block.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention uses a fixing frame to assist in circumferentially fixing the head in a multi-point manner, reducing the probability of polarization causing skewing of the rotation axis of the head during traditional single-point fixing, and improving the stability of the equipment during operation; by changing the flow direction of the fluid through the drainage channel to generate damping for the fluid passing through the flow-blocking round holes, thereby suppressing the vibration of the head and reducing the impact of the head vibration on the spinning of the head. Compared with the existing method of providing damping by reducing the flow area, this device relies on the flow characteristics of the fluid (fluid impact against fluid) to achieve the damping effect, ensuring stable damping to suppress polarization; by connecting the opposite sliding shells through the first connecting pipe, using the polarization force when the head shows polarization to adjust the other side of the head, ensuring the fastening force between the fixing frame and the head, and preventing the offset of the fixing position of the head due to the sudden decrease or disappearance of the fastening force, thereby affecting the spinning of the head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the second conveying device and the hydraulic push rod of the present invention; Figure 3 is a three-dimensional structural schematic diagram of the assembly block and the bearing frame of the present invention; Figure 4 is a three-dimensional structural schematic diagram of the assembly block and the clamping block of the present invention; Figure 5 is a three-dimensional structural schematic diagram of the rotating sleeve and the sliding shell of the present invention; Figure 6 is a cross-sectional view of the three-dimensional structure of the rotating sleeve and the sliding shell of the present invention; Figure 7 is an exploded view of the three-dimensional structure of the front guide plate and the rear guide plate of the present invention; Figure 8 is a three-dimensional structural schematic diagram of the fixed disk and the electromagnet of the present invention; Figure 9 is a three-dimensional structural schematic diagram of the rotating ring and the plugging plate of the present invention; Figure 10 is a three-dimensional structural schematic diagram of the fastening frame and the spring of the present invention; Figure 11 is a three-dimensional structural schematic diagram of the limiting frame and the limiting block of the present invention.

[0016] The reference numerals are: 1 - chassis, 2 - frame, 3 - lower rotating wheel, 4 - upper rotating wheel, 5 - first conveying device, 6 - second conveying device, 7 - hydraulic push rod, 8 - assembly block, 9 - clamping block, 10 - carrier frame, 11 - sliding frame, 12 - rotating sleeve, 13 - sliding housing, 14 - piston rod, 15 - fixing frame, 16 - flow guiding member, 161 - front flow guiding plate, 162 - rear flow guiding plate, 163 - drainage channel, 164 - flow blocking round hole, 17 - telescopic rod, 18 - fixing disk, 19 - electromagnet, 20 - rotating ring, 21 - blocking plate, 22 - rotating frame, 23 - first connecting pipe, 231 - second connecting pipe, 24 - damping cavity, 25 - reset cavity, 26 - fastening frame, 27 - spring, 28 - limiting frame, 29 - limiting block. Detailed implementation manners

[0017] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Embodiment 1

[0018] A large-scale head spinning forming device disclosed in this embodiment is used to spin the edge of a large-scale head that has not been formed yet, so as to change its shape.

[0019] The specific structure and connection relationship of the spinning device are as follows: As Figures 1 - 5As shown in the figure, it includes a chassis 1, on which a frame 2 is installed. Both the chassis 1 and the frame 2 are steel structures, and they are tightly connected by bolts. A servo system (not shown in the figure) is installed on the chassis 1. The servo system has high precision and fast response capabilities to meet the requirements of automated processing. On the frame 2, a lower spinning wheel 3 and an upper spinning wheel 4 are provided. The lower spinning wheel 3 and the upper spinning wheel 4 cooperate with each other during operation to gradually extrude the edge of the head. Both of them are made of high-speed tool steel, with high hardness and wear resistance to cope with the friction and deformation of metal materials during the spinning process. Moreover, the angles of the lower spinning wheel 3 and the upper spinning wheel 4 can be adjusted by the servo system to meet the forming requirements of different heads. And the servo system also provides the driving force and pressure required for spinning, and controls the feeding of the spinning wheels. A first conveying device 5 is arranged on the chassis 1, and a second conveying device 6 is arranged on the frame 2. A hydraulic push rod 7 is fixedly connected to the second conveying device 6. The telescopic end of the hydraulic push rod 7 is fixedly connected to an assembly block 8. The second conveying device 6 is slidably connected to the assembly block 8. Clamping blocks 9 are rotatably connected to both the assembly block 8 and the first conveying device 5. The above-mentioned parts are all components of an existing head spinning machine. Four bearing frames 10 distributed in a circumferential array are fixedly connected to the assembly block 8. A sliding frame 11 is slidably connected to the bearing frames 10. The first conveying device 5, the second conveying device 6, the hydraulic push rod 7 and the bearing frames 10 are all part of the servo system. Among them, the first conveying device 5, the second conveying device 6 and the bearing frames 10 are all electric slide rails, and the first conveying device 5 and the second conveying device 6 move synchronously. Their moving positions are adjusted according to the specific size of the head. A rotating sleeve 12 is rotatably connected to the sliding frame 11. A sliding shell 13 is slidably connected to the rotating sleeve 12. An incompressible transmission medium, which is a high-viscosity fluid, is filled in the sliding shell 13 to increase the moving damping force. A piston rod 14 is slidably connected to the sliding shell 13. A spring is arranged between the piston rod 14 and the sliding shell 13. The piston rod 14 is fixedly connected to a fixing frame 15, and they are connected by bolts. And initially, the lower side of the fixing frame 15 is lower than the lower side surface of the upper clamping block 9, which is used to initially assist the worker in positioning the fixing points of the head by the four fixing frames 15. The lower side of the fixing frame 15 is set as a sector, and the diameter of the circle where the arc edge on the side far from the clamping block 9 is located is larger than the diameter of the circle where the arc edge on the side close to the clamping block 9 is located, so as to conform to the specific shape characteristics of the head and make the forces on each part of the head more uniform when the four fixing frames 15 assist in fixing the head. A one-way damping mechanism is arranged on the piston rod 14 to provide one-way damping for the piston rod 14.

[0020] As Figure 6 、 Figure 7 and Figure 9As shown in the figure, the one-way damping mechanism includes a flow guide member 16. Four through holes are arranged on the piston rod 14 in a circumferentially arrayed manner. The four through holes are only shown schematically in the figure, and the specific number can be changed according to requirements. The flow guide member 16 is arranged in the through holes on the piston rod 14 in a circumferentially arrayed manner. The flow guide member 16 is formed by splicing a front flow guide plate 161 and a rear flow guide plate 162. The front flow guide plate 161 and the rear flow guide plate 162 are mirror parts. The two are spliced together, and the interference fit between the spliced flow guide member 16 and the piston rod 14 ensures the structural strength of the flow guide member 16 embedded in the piston rod 14. Bent grooves are formed on both the front flow guide plate 161 and the rear flow guide plate 162 by turning. The two bent grooves on the front flow guide plate 161 and the rear flow guide plate 162 are spliced to form a drainage channel 163. The upper end of the drainage channel 163 is the head end, and the other end is the tail end. The tail end of the drainage channel 163 tilts upward to change the fluid flow direction, so that the fluid passing through it moves upward. The circumferentially arrayed flow guide members 16 and the through holes on the piston rod 14 are jointly spliced into a flow blocking round hole 164. When the piston rod 14 moves upward, part of the fluid on the upper side of the piston rod 14 flows through the flow blocking round hole 164 to the lower side of the piston rod 14. Part of the fluid on the upper side of the piston rod 14 changes its flow direction under the guidance of the drainage channel 163 and thus flows upward, and finally flows out at the tail end of the drainage channel 163 and impacts the part of the fluid flowing downward through the flow blocking round hole 164, thereby generating damping on the fluid passing through the flow blocking round hole 164. The flow area of the flow blocking round hole 164 is equal to the sum of the cross-sectional areas of the adjacent and circumferentially arrayed drainage channels 163, which is used to ensure that the flow rate of the fluid providing the damping force is similar to the flow rate of the fluid normally passing through the flow blocking round hole 164, thereby ensuring the stability of the damping force.

[0021] As Figure 5 and Figure 6 shown in the figure, the sliding shell 13 is rotatably connected with a telescopic rod 17. A handle is arranged at the telescopic end (i.e., the upper end) of the telescopic rod 17 for the convenience of the staff to rotate. The telescopic rod 17 is threadedly connected with the rotating sleeve 12. The staff can adjust the initial position of the fixing frame 15 by rotating the telescopic rod 17 according to the thickness and material of the head to be processed, that is, change the auxiliary fixing effect of the fixing frame 15 during the head processing.

[0022] As Figure 3 and Figure 8 shown in the figure, the rotating sleeve 12 is fixedly connected with mirror-image fixed disks 18. An electromagnet 19 is fixedly connected to the side of the fixed disk 18 close to the bearing frame 10. In this embodiment, the materials of the bearing frame 10 and the sliding frame 11 are both high-carbon steel, and can also be changed to other ferromagnetic metals according to requirements. In the preparation stage, the staff can change the inclination angle of the sliding shell 13 according to the shape of the head to be processed. After the adjustment is completed, the staff can re-energize the electromagnet 19, and the electromagnet 19 is re-energized and adsorbed on the bearing frame 10 to fix the sliding shell 13, thereby completing the adjustment of the inclination angle of the sliding shell 13.

[0023] As Figure 9 shown, a rotating ring 20 is provided on the piston rod 14. A driving module for driving the rotating ring 20 to rotate is provided inside the piston rod 14. Four blocking plates 21 distributed in a circumferential array are fixedly connected to the rotating ring 20. Initially, the circumferential deflection angle between the blocking plate 21 and the flow-blocking round hole 164 is 90°. The piston rod 14 is rotatably connected to a rotating frame 22. The blocking plates 21 distributed in a circumferential array are fixedly connected to the rotating frame 22. The blocking plate 21 and the piston rod 14 are in dynamic sealing. The cross-sectional area of the blocking plate 21 is larger than the cross-sectional area of the flow-blocking round hole 164. The blocking plate 21 is used to block the flow-blocking round hole 164.

[0024] As Figure 3 and Figure 4 shown, two opposite sliding shells 13 are jointly communicated with a first communication pipe 23 and a second communication pipe 231. The flow areas of the first communication pipe 23 and the second communication pipe 231 are equal and smaller than the cross-sectional area of the flow-blocking round hole 164, so as to prevent the first communication pipe 23 and the second communication pipe 231 from having a greater impact on the damping between the sliding shell 13 and the piston rod 14. The piston rod 14 divides the sliding shell 13 into a damping cavity 24 and a reset cavity 25. The damping cavity 24 and the reset cavity 25 are communicated with each other through the flow-blocking round hole 164 on the piston rod 14. The first communication pipe 23 is communicated with the reset cavity 25, and the second communication pipe 231 is communicated with the damping cavity 24.

[0025] In this embodiment, the working process of the spinning forming equipment is as follows: Spinning preparation: According to the size of the head, adjust the positions of the two clamping blocks 9 through the first conveying device 5 and the second conveying device 6, and adjust the initial position and angle of the sliding shell 13 according to the shape, material and thickness of the head. Then move the head between the two clamping blocks 9. The staff drives the rotating ring 20 to rotate 90° through the driving module inside the piston rod 14. The rotating ring 20 drives the blocking plate 21 to rotate 90° and block the flow-blocking round hole 164, thereby separating the damping cavity 24 and the reset cavity 25. Then control the clamping blocks 9 and the four fixing frames 15 to move down together through the hydraulic push rod 7. If the initial position of the head is offset, some fixing frames 15 first contact the head. Since the damping cavity 24 and the reset cavity 25 are separated, the piston rod 14 and the fixing frames 15 are equivalent to being fixedly connected to the sliding shell 13. As the four fixing frames 15 gradually move down, the four fixing frames 15 position the head, thereby reducing the work intensity of the staff. After the positioning is completed, the staff releases the blocking of the flow-blocking round hole 164 by the blocking plate 21 through the rotating ring 20. As the four fixing frames 15 continue to move down, the spring between the piston rod 14 and the sliding shell 13 is compressed until the two clamping blocks 9 complete the fixation of the head. The staff adjusts the lower spinning wheel 3 and the upper spinning wheel 4 to the positions required for spinning.

[0026] Spinning process: The staff drives the lower spinning wheel 3 and the upper spinning wheel 4 to rotate through the servo system, thereby driving the head to rotate. And during the rotation, the spatial positions of the lower spinning wheel 3 and the upper spinning wheel 4 are continuously adjusted to gradually spin the head.

[0027] If polarization occurs during the spinning process, taking the upward vibration on the side close to the lower spinning wheel 3 and the upper spinning wheel 4 as an example, the left fixing frame 15 moves upward under the influence of the head vibration. The fixing frame 15 drives the piston rod 14 to move upward and squeeze the spring, changing the flow direction of the fluid through the drainage channel 163 to generate damping for the fluid moving downward through the flow-blocking round holes 164, thereby suppressing the vibration of the head and reducing the influence of the head vibration on the spinning of the head. Compared with the existing method of providing damping by reducing the flow area, this device relies on the flow characteristics of the fluid (fluid impact against fluid) to achieve the damping effect, ensuring stable damping to suppress polarization.

[0028] While the left side of the head is polarized upward, its right side will be polarized downward. When the left piston rod 14 moves upward as described above, part of the fluid in the left damping cavity 24 flows to the right damping cavity 24 through the second connecting pipe 231, and the left reset cavity 25 extracts part of the fluid in the right reset cavity 25, so that the right piston rod 14 has a tendency to move downward. When the right side of the head is polarized downward, the fastening force between the right fixing frame 15 and the head is ensured, preventing the offset of the fixing position of the head due to the sudden reduction or disappearance of the fastening force, thereby affecting the spinning of the head. Embodiment 2

[0029] A large-scale head spinning and forming device disclosed in this embodiment is further improved on the basis of Embodiment 1.

[0030] The structure, connection relationship, and working process of the spinning and forming device in Embodiment 1 will not be elaborated again. The working principle of the following structure will be mainly described.

[0031] As Figures 9 - 11 shown, it further includes a temporary fixing mechanism for assisting in fixing the head. The temporary fixing mechanism is arranged on the fixing frame 15. The temporary fixing mechanism includes a fastening frame 26. The fastening frame 26 is slidably connected to the fixing frame 15. A spring 27 is arranged between the fastening frame 26 and the fixing frame 15. The spring 27 is always in a compressed state. A limiting component for limiting the position of the fastening frame 26 is arranged on the rotating ring 20. The limiting component includes symmetrically distributed limiting frames 28 at the center. The upper ends of the limiting frames 28 are fixedly connected to the rotating ring 20. Both the piston rod 14 and the fixing frame 15 are slidably connected to the limiting frames 28. The fixing frame 15 is fixedly connected with a limiting block 29. Two symmetrically distributed limiting grooves are arranged on the limiting block 29. The limiting frames 28 can slide in the corresponding limiting grooves. The limiting frames 28 are used to limit the position of the limiting block 29.

[0032] The working process of this embodiment is similar to that of Embodiment 1, and is described in detail as follows: Since the movement of the piston rod 14 always has a certain damping force, even with the assistance of the fluid in the opposite sliding shell 13, the movement of the right piston rod 14 still requires a certain reaction time. In Example 1, after the rotating ring 20 drives the sealing plate 21 to rotate 90° (the sealing plate 21 loses the obstruction of the flow-blocking circular hole 164), the rotating ring 20 drives the two limit frames 28 to rotate 90° synchronously, so that the limit frames 28 rotate to the limit groove of the limit block 29. When the above-mentioned polarization occurs, the compressed spring 27 drives the fastening frame 26 to move downward relative to the fixed frame 15, that is, the fastening frame 26 is always close to the head and applies a temporary fastening force to it, to prevent the head from being offset at its fixed position due to the sudden disappearance of the fastening, thereby affecting the spinning of the head.

[0033] The technical principles of the embodiments of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present invention and cannot be interpreted in any way as limiting the protection scope of the embodiments of the present invention. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the embodiments of the present invention without creative work, and these methods will fall within the protection scope of the embodiments of the present invention.

Claims

1. A large head spinning forming device, characterized in that: It includes a chassis (1), on which a frame (2) is installed. On the frame (2), a lower rotating wheel (3) and an upper rotating wheel (4) are provided. On the chassis (1), a first conveying device (5) is provided. On the frame (2), a second conveying device (6) is provided. The second conveying device (6) is fixedly connected with a hydraulic push rod (7). The telescopic end of the hydraulic push rod (7) is fixedly connected with an assembly block (8). The second conveying device (6) is slidably connected with the assembly block (8). Clamping blocks (9) are rotatably connected to both the assembly block (8) and the first conveying device (5). On the assembly block (8), a circumferentially arrayed bearing frame (10) is fixedly connected. The bearing frame (10) is slidably connected with a sliding frame (11). The sliding frame (11) is rotatably connected with a rotating sleeve (12). The rotating sleeve (12) is slidably connected with a sliding shell (13). The sliding shell (13) is slidably connected with a piston rod (14). A spring is provided between the piston rod (14) and the sliding shell (13). The piston rod (14) is fixedly connected with a fixed frame (15). A one-way damping mechanism is provided on the piston rod (14) for providing one-way damping to the piston rod (14).

2. The large head spinning forming equipment according to claim 1, characterized in that: The lower side of the fixed frame (15) is fan-shaped, and the diameter of the circle where the arc edge on the side away from the clamping block (9) is located is larger than the diameter of the circle where the arc edge on the side close to the clamping block (9) is located.

3. A large head spinning forming device according to claim 1, characterized in that: The one-way damping mechanism includes a flow guiding member (16). The piston rod (14) is provided with through holes circumferentially arrayed. The flow guiding members (16) circumferentially arrayed are arranged in the through holes on the piston rod (14). The flow guiding member (16) is formed by splicing a front flow guiding plate (161) and a rear flow guiding plate (162). After the front flow guiding plate (161) and the rear flow guiding plate (162) are spliced, a drainage channel (163) is formed. The circumferentially arrayed flow guiding members (16) and the through holes on the piston rod (14) jointly form a flow blocking round hole (164).

4. A large head spinning forming device according to claim 3, characterized in that: The flow-through area of the flow blocking round hole (164) is equal to the sum of the cross-sectional areas of the adjacent and circumferentially arrayed drainage channels (163).

5. A large head spinning forming device according to claim 1, characterized in that: The sliding shell (13) is rotatably connected with a telescopic rod (17), and the telescopic rod (17) is threadedly connected with the rotating sleeve (12).

6. A large head spinning forming device according to claim 5, characterized in that: The rotating sleeve (12) is fixedly connected with mirror-image fixed disks (18). On the side of the fixed disk (18) close to the bearing frame (10), an electromagnet (19) is fixedly connected.

7. A large head spinning forming device according to claim 3, characterized in that: A rotating ring (20) is provided on the piston rod (14). A driving module for driving the rotating ring (20) to rotate is arranged in the piston rod (14). The rotating ring (20) is fixedly connected with circumferentially arrayed blocking plates (21). The piston rod (14) is rotatably connected with a rotating frame (22). The circumferentially arrayed blocking plates (21) are all fixedly connected with the rotating frame (22). The blocking plates (21) are used for blocking the flow blocking round hole (164).

8. A large head spinning forming device according to claim 7, characterized in that: A first connecting pipe (23) and a second connecting pipe (231) are commonly communicated with the sliding shell (13). The piston rod (14) divides the sliding shell (13) into a damping cavity (24) and a reset cavity (25). The damping cavity (24) and the reset cavity (25) are communicated with each other through a flow blocking round hole (164) on the piston rod (14). The first connecting pipe (23) is communicated with the reset cavity (25), and the second connecting pipe (231) is communicated with the damping cavity (24).

9. A large head spinning forming device according to claim 8, characterized in that: It further includes a temporary fixing mechanism with the same quantity as the fixing frame (15) and used for assisting in fixing the head. The temporary fixing mechanism is arranged on the fixing frame (15). The temporary fixing mechanism includes a fastening frame (26). The fastening frame (26) is slidably connected in the fixing frame (15). A spring (27) is arranged between the fastening frame (26) and the fixing frame (15). A limiting component for limiting the position of the fastening frame (26) is arranged on the rotating ring (20).

10. A large head spinning forming device according to claim 9, characterized in that: The limiting component includes limiting frames (28) symmetrically distributed at the center. The limiting frames (28) are fixedly connected to the rotating ring (20). Both the piston rod (14) and the fixing frame (15) are slidably connected to the limiting frames (28). The fixing frame (15) is fixedly connected with a limiting block (29). The limiting frames (28) are used for limiting the position of the limiting block (29).

Images