Extrusion die for pipes with various wall thicknesses

Abstract

The invention discloses an extrusion die for pipes with various wall thicknesses, and relates to the field of pipe extrusion dies. When the extrusion die for pipes with various wall thicknesses needs to adjust the wall thickness of the extruded pipe, a worker only needs to observe the pipe at a pipe extrusion opening of an extrusion die head, and a moving assembly is controlled by operating a control device; according to the device, the moving assembly moves the moving part to the position corresponding to the adjusting screw needing to be adjusted, then the adjusting screw can be automatically rotated and adjusted through the adjusting assembly, frequent manual movement between the adjusting screw and the pipe discharging port is not needed, manual screw adjusting work is not needed, the manual operation steps are greatly reduced, and the labor intensity of workers is reduced. According to the wall thickness adjusting device, the operation complexity is reduced, the wall thickness adjusting work is more convenient to operate, manpower is saved, meanwhile, due to the fact that a worker operates the control device and does not need to rotate the adjusting screw manually, the operation precision of the adjusting screw does not need to be controlled manually, the universality of the whole adjusting work is higher, and manual operation of the worker with insufficient experience is better facilitated.

Description

Technical Field

[0001] The invention relates to a pipe extrusion die, in particular to a pipe extrusion die with various wall thicknesses. Background Art

[0002] The existing pipe extrusion die has five adjustment screws threadedly connected at equal angles on the extrusion die head, and the ends of the adjustment screws extend to the inside of the extrusion die head and abut against the outer wall of the die, thereby achieving the effect of adjusting the wall thickness of the extruded pipe; During adjustment, workers make judgments based on their experience and fine-tune multiple adjustment screws in sequence to adjust the wall thickness of the extruded pipe. During adjustment, they need to continuously operate the screwdriver to rotate the adjustment screws. After each rotation, they return to the pipe extrusion site to observe the pipe extrusion situation, cut off the extruded waste pipe, and then return to the adjustment screw column to adjust the corresponding adjustment screw again. The entire adjustment process is very cumbersome, and the rotation control of the adjustment screw requires workers to have relatively rich experience to be able to effectively control it, which results in a high dependence of the adjustment accuracy on the workers' operating experience. The operation is not universal, which is not conducive to adjustments by inexperienced operators. Summary of the invention

[0003] The purpose of the present invention is to provide a multi-wall thickness pipe extrusion die which can automatically rotate an adjustment screw, reduce the complexity of operation, and improve the universality of operation.

[0004] In order to solve the problems existing in the prior art, the technical solution of the present invention is as follows: A variety of wall thickness pipe extrusion dies include an extrusion die head, a plurality of adjustment screws are threadedly connected at equal angles through threaded holes on the outer wall of the extrusion die head, a moving part is slidably mounted on the outer wall of the extrusion die head, a moving component for driving the moving part to move around on the outer wall of the extrusion die head is mounted on the moving part, an adjustment component for adjusting the adjustment screw is mounted on the moving part, and a lubrication component for lubricating the adjustment screw is also mounted on the moving part.

[0005] Preferably, a positioning assembly is installed on the moving member, and the positioning assembly is used to position the moving member at a position of the outer wall of the extrusion die head corresponding to the adjusting screw.

[0006] Preferably, the positioning assembly includes a socket symmetrically opened at one end of the moving part close to the extrusion die head, a positioning rod is slidably connected to the inner wall of the socket, the positioning rod is spherically arranged at the end close to the extrusion die head, a plurality of pairs of limiting holes are opened at equal angles on the outer wall of the extrusion die head, and the position of each pair of limiting holes corresponds to an adjusting screw, the positioning holes cooperate with the limiting holes, a first spring is fixed to the end of the positioning rod away from the extrusion die head, and the end of the first spring away from the extrusion die head is fixed to the outer wall of the moving part.

[0007] Preferably, an annular slide rail is fixed on the outer wall of the extrusion die head, and the moving part is slidably connected to the annular slide rail via an arc-shaped slide groove.

[0008] Preferably, the moving component includes a gear ring fixed on the outer wall of the extrusion die head, the middle part of the moving member away from the extrusion die head is rotatably connected to a rotating shaft through a bearing, a fan-shaped gear is fixed to one end of the rotating shaft, and the fan-shaped gear cooperates with the gear ring, a first motor is fixed to one end of the moving member close to the rotating shaft, and an end of the rotating shaft close to the first motor is fixed to the output end of the first motor.

[0009] Preferably, the adjustment assembly includes a lifting bar slidably connected to the end of the moving part away from the extrusion die head through a sliding hole, a second motor is fixed to the end of the lifting bar away from the moving part, and a screwdriver is rotatably connected to the end of the lifting bar close to the second motor through a bearing, one end of the screwdriver is fixed to the output end of the second motor, the screwdriver cooperates with the adjusting screw, and a lifting assembly driven by the moving assembly and mechanically linked to the moving assembly is installed on the lifting bar, and the lifting assembly is used to drive the lifting bar to move at the end of the moving part.

[0010] Preferably, the lifting assembly includes a driving column fixed to an end of the lifting bar close to the moving part, a cam plate is fixed to an end of the sector gear close to the driving column, the driving column abuts against the outer periphery of the cam plate, a groove is formed in the middle of an end of the moving part away from the extrusion die head, a second spring is fixed to the inner wall of the groove, and an end of the second spring away from the groove is fixed to the outer wall of the lifting bar.

[0011] Preferably, the lubrication assembly includes a carrier plate fixed on one end of the movable part close to the extrusion die head, a storage tank is fixed on the carrier plate, a nozzle is fixed on the outer wall of the carrier plate close to the adjusting screw, the nozzle is directly opposite to the adjusting screw, a disc is fixed on the end of the nozzle close to the adjusting screw, bristles are fixed at equal intervals on the side of the disc close to the adjusting screw, the bristles cooperate with the adjusting screw, and a discharge control assembly for controlling the grease in the tank to be extruded from the nozzle is installed on the storage tank.

[0012] Preferably, the discharge control assembly includes a push head slidably connected to the inner wall of the storage tank, a push assembly is fixed between the push head and the inner wall of the storage tank for pushing the push head toward the side of the extrusion die, the middle part of the nozzle is bent toward the side away from the extrusion die and extends to the side of the storage tank away from the extrusion die, a ball valve is fixed to the middle part of the nozzle, the ball valve includes an adjusting handle, a block is fixed on the ball valve, the adjusting handle is placed on the surface of the block, a connecting plate is fixed to the middle part of the nozzle, a fourth spring is fixed between the adjusting handle and the connecting plate, and a pressure sensor is fixed to the end of the adjusting handle away from the ball valve.

[0013] Preferably, the pushing assembly includes a third spring fixed to a side of the pushing head away from the extrusion die head, and one end of the third spring away from the pushing head is fixed to the inner wall of the storage tank.

[0014] Compared with the related art, the present invention has the following beneficial effects: 1. When workers need to adjust the wall thickness of the extruded pipe, they only need to observe the pipe at the pipe extrusion port of the extrusion die head, and control the moving component by operating the control device, so that the moving component moves the moving part to the position of the adjusting screw corresponding to the need to be adjusted, and then the adjusting screw can be automatically rotated and adjusted by the adjusting component, so that there is no need for manual frequent movement between the adjusting screw and the pipe outlet, and there is no need to manually adjust the screw, which greatly reduces the manual operation steps and the cumbersomeness of the operation, making the wall thickness adjustment operation more convenient and saving manpower. At the same time, because the worker can operate the control device without manual control to rotate the adjusting screw, the operating accuracy of the adjusting screw rotation does not need to be manually controlled, and the operation of the entire adjustment work is more universal, which is more conducive to the operation of inexperienced workers; 2. By installing a lubrication component on the moving part, while the moving part, the moving assembly and the adjusting assembly are performing adjustment work, the lubrication component can cooperate with the moving part, the moving assembly and the adjusting assembly to achieve the effect of automatically lubricating the adjusting screw, thereby eliminating the need for manual regular lubrication of the adjusting screw, ensuring smooth rotation of the adjusting screw and reducing the probability of the adjusting screw getting stuck. Similarly, no manual operation is required, further saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the position of the arc chute of the present invention; Figure 3 It is a schematic diagram of the structure of the lifting assembly of the present invention; Figure 4 It is a schematic diagram of the position of the limiting hole of the present invention; Figure 5 It is a schematic diagram of the lifting strip structure of the present invention; Figure 6 It is a schematic diagram of the shape of the cam disc of the present invention; Figure 7 It is a schematic diagram of the state in which the screwdriver of the present invention is inserted into the inner wall of the adjusting screw; Figure 8 This is a schematic diagram of Embodiment 2 of the present invention; Fig. 9 For the present invention Figure 8 A magnified image of point A; Fig.10This is one of the structural schematic diagrams of the discharge control assembly of the present invention; Fig.11 A schematic diagram of the shape of bristles of the present invention; Fig.12 It is a schematic diagram of the pusher head shape of the present invention; Fig.13 This is the second schematic diagram of the structure of the material discharging control component of the present invention; Fig.14 This is a schematic diagram of embodiment 3 of the present invention.

[0017] 1. Extrusion die head; 2. Adjusting screw; 3. Moving part; 311. Socket; 312. Positioning rod; 313. Limiting hole; 314. First spring; 4. Annular slide rail; 5. Arc slide groove; 6. Gear ring; 7. Rotating shaft; 8. Fan gear; 9. First motor; 10. Lifting strip; 11. Second motor; 12. Screwdriver; 13. Lifting assembly; 131. Drive column; 132. Cam plate; 133. Sink; 134. Second spring; 14. Carrier plate; 15. Storage tank; 16. Nozzle; 17. Disc; 18. Bristles; 19. Discharge control assembly; 191. Push head; 192. Third spring; 193. Ball valve; 1931. Adjusting handle; 194. Stop block; 195. Connecting plate; 196. Fourth spring; 197. Pressure sensor; 198. Hydraulic telescopic rod. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] For example, see Figures 1 to 7 The present embodiment provides a variety of wall thickness pipe extrusion dies, including an extrusion die head 1, on the outer wall of the extrusion die head 1, five adjustment screws 2 are threadedly connected through threaded holes at equal angles, a moving part 3 is slidably mounted on the outer wall of the extrusion die head 1, an annular slide rail 4 is fixed on the outer wall of the extrusion die head 1, and the moving part 3 is slidably connected to the annular slide rail 4 through an arc-shaped slide groove 5; The movable member 3 is symmetrically provided with a socket 311 at one end close to the extrusion die head 1, and a positioning rod 312 is slidably connected to the inner wall of the socket 311. The end of the positioning rod 312 close to the extrusion die head 1 is spherical, and five pairs of limiting holes 313 are provided on the outer wall of the extrusion die head 1 at equal angles, and the position of each pair of limiting holes 313 corresponds to an adjusting screw 2, and the positioning holes match the limiting holes 313. A first spring 314 is fixed to the end of the positioning rod 312 away from the extrusion die head 1, and the end of the first spring 314 away from the extrusion die head 1 is fixed to the outer wall of the movable member 3; When the moving member 3 is facing an adjusting screw 2, the ends of the two positioning rods 312 are pressed against and inserted into the inner wall of the limiting hole 313 by the elastic force of the first spring 314. The positioning rods 312 are pressed against the inner wall of the limiting hole 313 to keep the moving member 3 positioned on the extrusion die 1. It should be emphasized that when the moving member 3 is in an inclined posture, the elastic force of the two first springs 314 is large enough to ensure that the moving member 3 is stable. A moving component for driving the moving component 3 to move around the outer wall of the extrusion die head 1 is installed on the moving component 3, and the moving component includes a gear ring 6 fixed on the outer wall of the extrusion die head 1, and the middle part of the moving component 3 away from the extrusion die head 1 is rotatably connected to a rotating shaft 7 through a bearing, and a sector gear 8 is fixed to one end of the rotating shaft 7, and the sector gear 8 cooperates with the gear ring 6, and a first motor 9 is fixed to the end of the moving component 3 close to the rotating shaft 7, and the end of the rotating shaft 7 close to the first motor 9 is fixed to the output end of the first motor 9; When the moving member 3 needs to move to face another adjusting screw 2, the rotating shaft 7 is driven to rotate by driving the first motor 9, thereby driving the sector gear 8 to rotate, and the sector gear 8 is driven to rotate one circle, and the sector gear 8 rotates one circle to toggle the gear ring 6, so that the moving member 3 is rotated 72 degrees on the outside of the extrusion die head 1, so that the moving member 3 is moved to face another adjusting screw 2, and when the moving member 3 is driven to rotate, the elastic force of the first spring 314 can be overcome so that the end of the positioning rod 312 is staggered with the limiting hole 313, until the moving member 3 is rotated 72 degrees, the two positioning rods 312 are again facing the other pair of limiting holes 313, and under the action of the rebound force of the first spring 314, the positioning rods 312 are inserted and pressed against the pair of limiting holes 313, so that the moving member 3 is positioned at the adjusted position, and then the adjusting screw 2 facing the moving member 3 can be adjusted; The moving part 3 is provided with an adjustment assembly for adjusting the adjusting screw 2. The adjustment assembly includes a lifting bar 10 which is slidably connected to the end of the moving part 3 away from the extrusion die head 1 through a sliding hole. The end of the lifting bar 10 away from the moving part 3 is fixed with a second motor 11. The end of the lifting bar 10 close to the second motor 11 is rotatably connected with a screwdriver 12 through a bearing. One end of the screwdriver 12 is fixed to the output end of the second motor 11. The screwdriver 12 cooperates with the adjusting screw 2. The lifting bar 10 is provided with a lifting assembly which is driven by the moving assembly and mechanically linked with the moving assembly. 13, the lifting assembly 13 is used to drive the lifting bar 10 to move at the end of the moving member 3; the lifting assembly 13 includes a driving column 131 fixed to the end of the lifting bar 10 close to the moving member 3, a cam plate 132 is fixed to the end of the sector gear 8 close to the driving column 131, the driving column 131 abuts against the outer periphery of the cam plate 132, a sinking groove 133 is formed in the middle of the end of the moving member 3 away from the extrusion die 1, a second spring 134 is fixed to the inner wall of the sinking groove 133, and the end of the second spring 134 away from the sinking groove 133 is fixed to the outer wall of the lifting bar 10; In the process of the moving member 3 moving from facing an adjusting screw 2 to facing an adjusting screw 2 adjacent to the adjusting screw 2, the first motor 9 rotates to rotate the sector gear 8, and the initial posture of the sector gear 8 is as follows: Figure 6 The initial posture of the cam plate 132 is as follows: Figure 6 In each movement, the rotating shaft 7 follows Figure 6 When the rotating shaft 7 rotates initially, the position of the moving member 3 is fixed, but the rotation of the cam plate 132 pushes the driving column 131 to rise, thereby pushing the lifting strip 10 to slide upward on the moving member 3, thereby driving the screwdriver 12 to be pulled out from the inner wall of the adjusting screw 2. After being pulled out, the rotating shaft 7 continues to rotate and the fan-shaped gear 8 meshes with the gear ring 6 and drives the moving member 3 to slide on the outer side of the extrusion die head 1, until the moving member 3 moves from the original adjusting screw 2 to the original adjusting screw 2 adjacent to the adjusting screw 2, at this time, the fan gear 8 has been separated from the gear ring 6 and is not meshed, and the moving member 3 is positioned by the positioning rod 312, and at this time, the rotating shaft 7 has not completed a circle, and the driving column 131 is in contact with the outermost periphery of the cam plate 132, and then the rotating shaft 7 continues to rotate until it rotates a circle, until the depression on the outer periphery of the cam plate 132 rotates to face the driving column 131, at this time, at the second spring The lifting bar 10 is pulled under the action of the rebound force of 134 so that the lifting bar 10 slides close to the moving part 3, and the driving column 131 finally hits the deepest part of the depression on the outer periphery of the cam plate 132. In this process, the screwdriver 12 approaches an adjusting screw 2 directly opposite to the moving part 3 and is inserted into the inner wall of the adjusting screw 2. If the angles of the screwdriver 12 and the adjusting screw 2 are not corresponding, the screwdriver 12 hits the end of the adjusting screw 2. Then, the second motor 11 can be controlled to rotate until the screwdriver 12 rotates to the angle opposite to the adjusting screw 2, and the screwdriver 12 can continue to be inserted into the end of the adjusting screw 2. It should be emphasized that the rebound force of the second spring 134 hits the screwdriver 12 against the end of the adjusting screw 2, and the friction between the adjusting screw 2 and the screwdriver 12 is much smaller than the friction between the adjusting screw 2 and the inner wall of the threaded hole on the extrusion die 1 and between the end of the adjusting screw 2 and the outer wall of the die, so the adjusting screw 2 will not be driven to rotate at this time. And it is also possible to utilize known technology to record the angle posture of the second motor 11 each time the screwdriver 12 pulls out the adjusting screw 2 through the controller, and each time the moving member 3 faces the adjusting screw 2, the second motor 11 automatically rotates to adjust the angle posture of the screwdriver 12 to reset to the recorded angle posture; After the screwdriver 12 is inserted into the inner side of the end of the adjusting screw 2, the second motor 11 can be driven to rotate, thereby adjusting the rotation of the adjusting screw 2 to achieve the effect of adjusting the wall thickness of the extruded pipe. The first motor 9 and the second motor 11 are both worm gear reduction motors, which have a self-locking effect. When no power is supplied, the output end will not rotate at will. It should be noted that the screwdriver 12 may be a hexagonal screwdriver 12, and the corresponding adjusting screw 2 may be a hexagon socket screw, which are both prior arts, and therefore the detailed structures of the screwdriver 12 and the adjusting screw 2 are not described in detail; It should be emphasized that the entire mold can be connected to an external control device, which is a prior art, that is, the staff can control the adjustment component and the moving component by operating the control device to control which adjustment screw 2 is adjusted. The adjustment includes screwing in and screwing out, and specifically the screwing-in depth and the screwing-out depth can be controlled. All of this can be operated through a handheld control device, and the worker only needs to control at the pipe extrusion port and observe the extrusion shape of the pipe. There is no need to frequently manually adjust the adjustment screw 2, which greatly saves manpower, reduces the tediousness of operation, and is more convenient to use. By automatically adjusting the adjustment screw 2, the adjustment accuracy is highly controllable, the dependence on manual experience is low, and the universality of operation is greatly improved.

[0020] For example 2, please refer to Figures 8 to 13 This embodiment provides a further technical solution based on the first embodiment. A lubrication assembly for lubricating the adjusting screw 2 is also installed on the moving part 3. The lubrication assembly includes a carrier plate 14 fixed to one end of the moving part 3 close to the extrusion die head 1. A storage tank 15 is fixed on the carrier plate 14. A nozzle 16 is fixed on the outer wall of the carrier plate 14 close to the adjusting screw 2. The nozzle 16 faces the adjusting screw 2. A disc 17 is fixed on one end of the nozzle 16 close to the adjusting screw 2. Bristles 18 are fixed at equal intervals on the side of the disc 17 close to the adjusting screw 2. The bristles 18 cooperate with the adjusting screw 2. A discharge control assembly 19 for controlling the grease in the storage tank 15 to be extruded from the nozzle 16 is installed on the storage tank 15. The discharge control assembly 19 includes a push head 191 slidably connected to the inner wall of the storage tank 15, a third spring 192 is fixed to the side of the push head 191 away from the extrusion die 1, and one end of the third spring 192 away from the push head 191 is fixed to the inner wall of the storage tank 15, the middle part of the nozzle 16 is bent toward the side away from the extrusion die 1 and extends to the side of the storage tank 15 away from the extrusion die 1, a ball valve 193 is fixed to the middle part of the nozzle 16, the ball valve 193 includes an adjustment handle 1931, a stopper 194 is fixed on the ball valve 193, and the adjustment handle 1931 is built on the surface of the stopper 194, a connecting plate 195 is fixed to the middle part of the nozzle 16, a fourth spring 196 is fixed between the adjustment handle 1931 and the connecting plate 195, and a pressure sensor 197 is fixed to the end of the adjustment handle 1931 away from the ball valve 193; After each rotation of the moving part 3 by 72 degrees, the bristles 18 rotate with it around the axis of the extrusion die head 1 and abut against the outer wall of an adjusting screw 2 that is opposite to the moving part 3 after the rotation is completed. When lubrication work is required for the adjusting screw 2 that is opposite to the moving part 3, the second motor 11 is controlled to rotate so that the screwdriver 12 drives the adjusting screw 2 to rotate and screw out of the extrusion die head 1. It should be emphasized that in the process of the adjusting screw 2 being rotated and screwed out of the extrusion die head 1 by the screwdriver 12, the end of the adjusting screw 2 will also push the screwdriver 12 to drive the lifting strip 10 to slide to the side away from the moving part 3. The second spring 134 is stretched during the sliding process until the end of the adjusting screw 2 contacts the pressure sensor 197. At this time, the controller receives the signal and then continues to control the second motor 11 to rotate the set number of circles, so that the adjusting screw 2 continues to rotate the set distance to the side away from the extrusion die 1. Thereafter, during the process of rotating, the adjusting screw 2 pushes the adjusting handle 1931 of the ball valve 193 to rotate, so that the ball valve 193 is opened. After the ball valve 193 is opened, the second motor 11 stops rotating, and at this time, a section of the end of the adjusting screw 2 is still located inside the extrusion die 1. , ensuring that the adjusting screw 2 will not separate from the extrusion die 1, and then because the nozzle 16 is opened, the push head 191 is pushed to slide toward the inner side of the storage tank 15 under the action of the elastic force of the fourth spring 196, squeezing the grease inside the storage tank 15 into the nozzle 16 and extruding it to the outer side of the adjusting screw 2. After a certain period of extrusion, the second motor 11 rotates in the opposite direction, so that the screwdriver 12 drives the adjusting screw 2 to rotate and screw into the inner side of the extrusion die 1. At this time, the lifting bar 10 slides toward one side of the moving part 3 under the action of the rebound force of the second spring 134. Since the top opening of the adjusting screw 2 is lost, , under the action of the fourth spring 196, the adjusting handle 1931 is pulled to rotate so that the ball valve 193 is closed, and finally the adjusting handle 1931 is pressed against the surface of the stopper 194 again, and then the adjusting screw 2 is continuously screwed into the extrusion die 1 and separated from the pressure sensor 197 on the adjusting handle 1931 until the adjusting screw 2 is reset. Since the ball valve 193 is closed, the push head 191 cannot be pushed in further, and the adjusting screw 2 is continuously rotated and screwed into the extrusion die 1 during the resetting process, and the bristles 18 can evenly apply the grease on the outer wall of the adjusting screw 2; It should be noted that the relationship between the ball valve 193 and the adjustment handle 1931 is prior art. In the prior art, it is a known technology to complete the opening and closing of the ball valve 193 by rotating the adjustment handle 1931. Therefore, the specific structure and working principle of the ball valve 193 and the adjustment handle 1931 are not described in detail here. It should be emphasized that each time the moving member 3 moves to face an adjusting screw 2, after the screwdriver 12 is inserted into the inner wall of the adjusting screw 2, the screwdriver 12 is inserted into the inner wall of the adjusting screw 2 for a certain distance, and the end of the screwdriver 12 is still at a certain distance from the deepest part of the inner wall of the adjusting screw 2, such as Figure 7As shown, the adjustment of the adjusting screw 2 belongs to fine adjustment and will not rotate a large angle. Therefore, when the wall thickness is subsequently adjusted, the adjusting screw 2 is rotated by the screwdriver 12 and still has a certain margin for screwing in and out of the extrusion die head 1. When the wall thickness is adjusted, the rotation of the adjusting screw 2 will not cause the screwdriver 12 to move away from or close to the extrusion die head 1. When lubricating, the adjusting screw 2 is driven to screw out of the extrusion die head 1. Only when the adjusting screw 2 is screwed out and the end of the screwdriver 12 hits the deepest inner wall of the adjusting screw 2, the screwdriver 12 can move away from the extrusion die head 1 along with the adjusting screw 2. Thereby, the effect of automatic lubrication of the adjusting screw 2 is achieved, the manual operation steps are further reduced, and the use is more convenient.

[0021] For example 3, please refer to Fig.14 The present embodiment is different from the second embodiment in that: the discharge control assembly 19 includes a push head 191 slidably connected to the inner wall of the storage tank 15, the push head 191 is fixed with the extended end of the hydraulic telescopic rod 198 on the side away from the extrusion die head 1, the end of the hydraulic telescopic rod 198 away from the push head 191 is fixed to the storage tank 15, the middle part of the nozzle 16 is bent toward the side away from the extrusion die head 1 and extends to the side of the storage tank 15 away from the extrusion die head 1, and the middle part of the nozzle 16 is fixed with a ball valve 193, and the ball valve 193 includes an adjustment handle 19 31. A stopper 194 is fixed on the ball valve 193, an adjusting handle 1931 is placed on the surface of the stopper 194, a connecting plate 195 is fixed to the middle of the nozzle 16, a fourth spring 196 is fixed between the adjusting handle 1931 and the connecting plate 195, a pressure sensor 197 is fixed to the end of the adjusting handle 1931 away from the ball valve 193, and the push head 191 is pushed by a hydraulic telescopic rod 198 instead of the spring, that is, after the nozzle 16 is opened, the protruding end of the hydraulic telescopic rod 198 pushes the push head 191 to slide.

[0022] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A multi-wall thickness pipe extrusion die, comprising an extrusion die head (1), wherein a plurality of adjusting screws (2) are threadedly connected at equal angles through threaded holes on the outer wall of the extrusion die head (1), characterized in that: A moving part (3) is slidably mounted on the outer wall of the extrusion die (1); a moving component for driving the moving part (3) to move around on the outer wall of the extrusion die (1) is mounted on the moving part (3); an adjusting component for adjusting the adjusting screw (2) is mounted on the moving part (3); and a lubricating component for lubricating the adjusting screw (2) is also mounted on the moving part (3).

2. The various wall thickness pipe extrusion die according to claim 1, characterized in that: A positioning assembly is installed on the moving part (3), and the positioning assembly is used to position the moving part (3) at a position on the outer wall of the extrusion die head (1) corresponding to the adjusting screw (2).

3. The various wall thickness pipe extrusion die according to claim 2, characterized in that: The positioning assembly comprises a socket (311) symmetrically arranged at one end of the moving member (3) close to the extrusion die (1); a positioning rod (312) is slidably connected to the inner wall of the socket (311); the end of the positioning rod (312) close to the extrusion die (1) is spherically arranged; a plurality of pairs of limiting holes (313) are arranged on the outer wall of the extrusion die (1) at equal angle intervals, and the position of each pair of limiting holes (313) corresponds to an adjusting screw (2); the positioning holes are matched with the limiting holes (313); a first spring (314) is fixed to one end of the positioning rod (312) away from the extrusion die (1); and the end of the first spring (314) away from the extrusion die (1) is fixed to the outer wall of the moving member (3).

4. The various wall thickness pipe extrusion die according to claim 1, characterized in that: An annular slide rail (4) is fixed on the outer wall of the extrusion die head (1), and the moving part (3) is slidably connected to the annular slide rail (4) via an arc-shaped slide groove (5).

5. The various wall thickness pipe extrusion die according to claim 1, characterized in that: The moving assembly comprises a gear ring (6) fixed on the outer wall of the extrusion die head (1); the middle part of the end of the moving member (3) away from the extrusion die head (1) is rotatably connected to a rotating shaft (7) via a bearing; a sector gear (8) is fixed to one end of the rotating shaft (7); the sector gear (8) cooperates with the gear ring (6); a first motor (9) is fixed to one end of the moving member (3) close to the rotating shaft (7); and an end of the rotating shaft (7) close to the first motor (9) is fixed to an output end of the first motor (9).

6. The various wall thickness pipe extrusion die according to claim 5, characterized in that: The adjustment component comprises a lifting bar (10) which is slidably connected to an end of a moving member (3) away from an extrusion die head (1) through a sliding hole, a second motor (11) being fixed to the end of the lifting bar (10) away from the moving member (3), a screwdriver (12) being rotatably connected to the end of the lifting bar (10) close to the second motor (11) through a bearing, one end of the screwdriver (12) being fixed to an output end of the second motor (11), the screwdriver (12) being matched with an adjustment screw (2), a lifting component (13) driven by the moving component and mechanically linked to the moving component being installed on the lifting bar (10), the lifting component (13) being used to drive the lifting bar (10) to move at the end of the moving member (3).

7. The various wall thickness pipe extrusion die according to claim 6, characterized in that: The lifting assembly (13) comprises a driving column (131) fixed to an end of the lifting bar (10) close to the moving member (3); a cam plate (132) is fixed to an end of the sector gear (8) close to the driving column (131); the driving column (131) abuts against the outer periphery of the cam plate (132); a sink groove (133) is formed in the middle of an end of the moving member (3) away from the extrusion die head (1); a second spring (134) is fixed to an inner wall of the sink groove (133); and an end of the second spring (134) away from the sink groove (133) is fixed to the outer wall of the lifting bar (10).

8. The various wall thickness pipe extrusion die according to claim 1, characterized in that: The lubrication assembly comprises a carrier plate (14) fixed to one end of the moving part (3) close to the extrusion die head (1), a storage tank (15) being fixed on the carrier plate (14), a nozzle (16) being fixed on the outer wall of the carrier plate (14) close to the adjusting screw (2), the nozzle (16) being directly opposite to the adjusting screw (2), a disc (17) being fixed to one end of the nozzle (16) close to the adjusting screw (2), bristles (18) being fixed at equal intervals on one side of the disc (17) close to the adjusting screw (2), the bristles (18) being matched with the adjusting screw (2), and a discharge control assembly (19) for controlling the grease in the storage tank (15) to be extruded from the nozzle (16) being installed on the storage tank (15).

9. The various wall thickness pipe extrusion die according to claim 8, characterized in that: The discharge control assembly (19) comprises a push head (191) slidably connected to the inner wall of the storage tank (15), a push assembly for pushing the push head (191) toward one side of the extrusion die (1) is fixed between the push head (191) and the inner wall of the storage tank (15), the middle portion of the nozzle (16) is bent toward a side away from the extrusion die (1) and extends to a side of the storage tank (15) away from the extrusion die (1), a ball valve (193) is fixed to the middle portion of the nozzle (16), and the ball valve (193) 193) comprises an adjusting handle (1931), a stopper (194) is fixed on the ball valve (193), the adjusting handle (1931) is mounted on the surface of the stopper (194), a connecting plate (195) is fixed in the middle of the nozzle (16), a fourth spring (196) is fixed between the adjusting handle (1931) and the connecting plate (195), and a pressure sensor (197) is fixed at one end of the adjusting handle (1931) away from the ball valve (193).

10. The various wall thickness pipe extrusion die according to claim 9, characterized in that: The pushing assembly comprises a third spring (192) fixed to a side of the pushing head (191) away from the extrusion die (1), and one end of the third spring (192) away from the pushing head (191) is fixed to the inner wall of the storage tank (15).

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