Continuous progressive head shrinking machine

Abstract

The invention relates to the technical field of head shrinking machines, and provides a continuous progressive head shrinking machine which can realize the necking operation of two materials, namely a pipe and a bar, is simpler and more convenient in switching between necking modes formed corresponding to the two materials, can be matched with an object to be necked before necking to form preheating, is stronger in functionality and is more convenient to use. Automatic conveying, taking and placing of materials can be achieved, the overall automation degree of the equipment is higher, practicability is good, the equipment comprises a workbench, and further comprises a head shrinking part and an induction heater, the induction heater is arranged on the left side of the workbench, and the head shrinking part comprises two installation barrel shells and two installation head shells; the two installation barrel shells and the two installation head shells are all installed on the workbench, the two installation barrel shells are fixedly connected with the two installation head shells correspondingly, the two installation head shells communicate with the two installation barrel shells correspondingly, an installation opening is formed in the front end of each installation head shell, a first-stage necking barrel is fixedly installed at the installation opening, and a second-stage necking barrel is fixedly installed at the second-stage necking barrel. And a second-stage necking cylinder is arranged at the rear end of the first-stage necking cylinder.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of head shrinking machines, in particular to a continuous step-by-step head shrinking machine. BACKGROUND

[0002] It is well known that a head shrinking machine is an auxiliary device that mainly shrinks the diameter of the end of a pipe or a bar material through die extrusion or mechanical processing to achieve connection, sealing or forming requirements. In order to improve the necking efficiency and quality of the head shrinking machine, a continuous step-by-step head shrinking machine is proposed.

[0003] According to the search, a press for pipe blank head shrinking operation is disclosed in Chinese patent application No. CN202223282823.7, which is generally described as including an upper press head and a lower press head, the lower press head being located below the upper press head, the shapes of the lower press head and the upper press head being symmetrical, the bottom of the upper press head and the top of the lower press head being provided with semicircular arc grooves, the two symmetrical semicircular arc grooves forming a pipe blank head shrinking channel, the pipe blank head shrinking channel including a forming portion, a connecting portion and a circular table portion, the connecting portion being located between the forming portion and the circular table portion, the top of the upper press head being connected with an upper pressure disc, the upper pressure disc being connected with the press, when in use, the upper press head of the press performs head shrinking operation on the pipe blank, and a seamless pipe head shrinking and forming device is disclosed in Chinese patent application No. CN202223552019.6, which is generally described as including a workbench, the workbench being provided with a clamp for clamping an aluminum pipe, the workbench being further provided with an extruder for extruding the aluminum pipe, when in use, the upper clamp can be adjusted between the upper clamp and the lower clamp by the adjusting mechanism to perform feeding and discharging.

[0004] The above-mentioned prior art can realize the necking operation of the pipe material, but considering that the pipe material is a hollow structure, it is inevitable that the pipe wall will be wrinkled during the necking process of the pipe, the practicality needs to be further improved, and the stability of the necking quality of the pipe needs to be further strengthened. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a continuous step-by-step head shrinking machine, which can realize the necking operation of two kinds of materials, i.e. pipe and bar, the switching between the necking modes corresponding to the two kinds of materials is more simple, the object to be necked can be preheated before necking, the functionality of the equipment is stronger, the automatic conveying and taking and placing of the material can be realized, the overall automation degree of the equipment is higher, and the practicality is better.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a continuous step-by-step necking machine, comprising a workbench, a necking part and an induction heater, the induction heater is arranged on the left side of the workbench, the necking part comprises two installation cylinder shells and two installation head shells, the two installation cylinder shells and the two installation head shells are installed on the workbench, the two installation cylinder shells are fixedly connected with the two installation head shells respectively, the two installation head shells are communicated with the two installation cylinder shells respectively, the front end of each installation head shell is provided with an installation port, a first necking cylinder is fixedly installed at the installation port, the rear end of the first necking cylinder is provided with a second necking cylinder, the rear end of the second necking cylinder is rotatably connected with a third necking cylinder, the second necking cylinder and the third necking cylinder are rotatably installed in the installation head shell, and a linkage gear for transmission between the second necking cylinder and the third necking cylinder is arranged in the installation head shell, the two installation cylinder shells are rotatably connected with transmission pipe shafts, the front ends of the two transmission pipe shafts are in transmission connection with the third necking cylinder, a pipe inner supporting piece is arranged in the transmission pipe shaft, a power system for driving the transmission pipe shaft and the pipe inner supporting piece is installed on the workbench, and a taking and placing system is installed on the two installation head shells.

[0007] Preferably, the pipe inner supporting piece comprises a prismatic cylinder shaft, a prong hole ring is slidably connected to the outer side of the prismatic cylinder shaft, the prong hole ring is rotatably connected in the transmission pipe shaft, the front end of the prismatic cylinder shaft is fixedly connected with an insertion cylinder, the front end of the insertion cylinder is fixedly connected with a plurality of outward expanding arc plates, the plurality of outward expanding arc plates are matched with each other, an expanding shaft is arranged in the insertion cylinder, the front end of the expanding shaft is provided with a tapered column table, the plurality of outward expanding arc plates are matched with the tapered column table, the expanding shaft is fixedly connected with a transmission rod, the electric position adjusting rod is installed at the rear end of the prismatic cylinder shaft, and the execution rod of the electric position adjusting rod is connected with the transmission rod.

[0008] Preferably, the front end of the transmission pipe shaft is provided with a plurality of abutting positioning grooves, the rear end of the third necking cylinder is provided with a plurality of abutting positioning sharp heads, the plurality of abutting positioning sharp heads are matched with the plurality of abutting positioning grooves respectively, the rear end of the second necking cylinder and the front end of the third necking cylinder are fixedly connected with end face tooth rings engaged with the linkage gear.

[0009] Preferably, the taking and placing system comprises a cantilever frame, the cantilever frame is fixedly connected with the installation head shell, a lifting frame is slidably connected to the cantilever frame, an electric lifting rod is installed on the cantilever frame, the execution rod of the electric lifting rod is connected with the lifting frame, a regulating frame is slidably connected to the bottom end of the lifting frame, a counter-rotating grabbing structure is installed in the regulating frame, an electric pushing rod is installed in the lifting frame, and the execution rod of the electric pushing rod is connected with the regulating frame.

[0010] Preferably, the counter rotating grabbing structure comprises an electric telescopic control rod and two lifting frames, both of the lifting frames are fixedly connected with the adjusting frame, a support pipe frame is fixedly connected between the two lifting frames, two counter rotating shafts are rotatably connected in the support pipe frame, a front counter rotating clamping frame and a rear counter rotating clamping frame are fixedly connected on each of the two counter rotating shafts, the front counter rotating clamping frame and the rear counter rotating clamping frame on the counter rotating shaft on the right side are both fixedly connected with a lower extension blocking rod, an eccentric shaft is arranged on each of the two counter rotating shafts, a transmission bent rod is rotatably connected on each of the two eccentric shafts, the electric telescopic control rod is installed in the adjusting frame, a transmission double connecting frame is fixedly connected with the execution rod of the electric telescopic control rod, and both of the transmission bent rods are connected with the transmission double connecting frame.

[0011] Preferably, two side strip holes are formed in the adjusting frame, a hinged ear frame is slidably connected in each of the two side strip holes, both of the hinged ear frames are hinged with the two transmission bent rods respectively, both of the hinged ear frames are fixedly connected with the transmission double connecting frame, a plurality of side stepped guide rods are fixedly connected on the overhanging frame, and a plurality of insertion alignment sleeves are fixedly connected outside the lifting frame, and each of the plurality of side stepped guide rods is matched with a corresponding insertion alignment sleeve.

[0012] Preferably, the power system comprises two electric telescopic rods, two speed reduction motors and two transmission pulleys, both of the electric telescopic rods and both of the speed reduction motors are installed on the workbench, a drive pulley is installed on the main shaft of each of the two speed reduction motors, both of the drive pulleys are transmissionally connected with a transmission belt set, both of the transmission belt sets are transmissionally connected with the two transmission pulleys respectively, the two transmission pulleys are spline-connected with two transmission pipe shafts respectively, a transmission plate is fixedly connected on the execution rod of each of the two electric telescopic rods, and both of the transmission plates are fixedly connected with the two prismatic cylinder shafts respectively.

[0013] Preferably, an installation ring is rotatably connected on each of the secondary necking cylinder and the tertiary necking cylinder, a plurality of installation hole ears are fixedly connected in the installation head shell, an installation bolt is arranged in each of the plurality of installation hole ears, a plurality of assembly holes are arranged on each of the two installation rings, and each of the plurality of installation bolts passes through a corresponding assembly hole.

[0014] Preferably, a supporting frame is arranged at the left end of the workbench, the induction heater is installed on the supporting frame, a track frame is fixedly installed at the front end of the workbench, a moving vehicle is installed on the track frame, a supporting frame is arranged at the left end of the track frame, a heating conveying belt and an auxiliary conveying belt are respectively installed on the supporting frame and the moving vehicle, and the installation position of the heating conveying belt is higher than that of the auxiliary conveying belt.

[0015] Preferably, the right end of the workbench is provided with a slag collecting box, the top end of the workbench is provided with a slag collecting groove, the inner bottom wall of the slag collecting groove is provided with a gradually decreasing inclined structure from left to right, the left end of the slag collecting box is communicated with the right end of the slag collecting groove at the lowest position, and the front end of the workbench is provided with an extended slag receiving plate for receiving the waste slag falling forward in the necking process.

[0016] Compared with the prior art, the application provides a continuous progressive necking machine, which has the following beneficial effects: (1) In the application, the necking part is designed to form an execution function part of the necking operation, which can realize the necking operation of both pipe materials and bar materials, and the switching between the necking modes formed by the two materials is more simple.

[0017] (2) In the application, the taking and placing system is designed to form a lifting and aligning insertion function structure for the material to be necked, which can realize the automatic conveying and taking and placing of the material, and the overall automation degree of the equipment is higher, and the practicability is better.

[0018] (3) In the application, the pipe support is provided, which can form internal support for the pipe material during the necking operation of the pipe material, reduces the occurrence of wrinkles in the pipe necking process, and ensures the necking quality of the pipe material.

[0019] (4) In the application, the power system is provided to provide rotating driving power for the transmission pipe shaft and operating power for the pipe support, which ensures the operation of the continuous progressive necking machine. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the application; Figure 2 It is a schematic diagram of the overall three-dimensional structure of the application; Figure 1 It is a schematic diagram of the local enlarged structure of A in the application; Figure 3 It is a schematic diagram of the local enlarged structure of B in the application; Figure 1 It is a schematic diagram of the local enlarged structure of C in the application; Figure 4 It is a schematic diagram of the local enlarged structure of C in the application; Figure 5 Figure 4 It is a schematic diagram of the local enlarged structure of C in the application; Figure 6 It is a schematic diagram of the local enlarged structure of C in the application; Figure 7 It is a schematic diagram of the local enlarged structure of C in the application; Figure 8 It is a schematic diagram of the local enlarged structure of C in the application;​Figure 7 Partial enlarged structural schematic view at D; Figure 9 Overall perspective structural schematic view from the back side of the present application; Figure 10 Overall perspective structural schematic view from the back side of the present application; Figure 9 Partial enlarged structural schematic view at E; Figure 11 Overall perspective structural schematic view from the back side of the present application; Figure 9 Partial enlarged structural schematic view at F; Figure 12 Overall perspective structural schematic view from the back side of the present application; Figure 9 Partial enlarged structural schematic view at G; Figure 13 Overall perspective structural schematic view from the bottom side of the present application; Figure 14 Overall perspective structural schematic view from the bottom side of the present application; Figure 13 Partial enlarged structural schematic view at H; Figure 15 Overall perspective structural schematic view from the bottom side of the present application; Figure 13 Partial enlarged structural schematic view at L; Figure 16 Partial sectional perspective structural schematic view of the cooperation of the lifting frame, the hoisting frame and the downward extending blocking rod of the present application; Figure 17 Exploded perspective structural schematic view from the bottom side of the cooperation of the hoisting frame, the supporting pipe frame and the counter rotating shaft of the present application; Figure 18 Partial sectional perspective structural schematic view of the cooperation of the adjusting frame, the electric telescopic control rod and the transmission double connecting frame of the present application; Figure 19 Partial sectional perspective structural schematic view of the cooperation of the workbench, the installation cylinder shell and the installation head shell of the present application; Figure 20 Partial enlarged structural schematic view at K; Figure 19 Figure 21 Partial sectional perspective structural schematic view of the cooperation of the edge hole ring, the insertion cylinder and the outward expanding arc plate of the present application.

[0021] ​In the figure: 1, workbench; 2, induction heater; 3, installation cylinder shell; 4, installation head shell; 5, first-stage necking cylinder; 6, second-stage necking cylinder; 7, third-stage necking cylinder; 8, linkage gear; 9, transmission tube shaft; 10, prismatic cylinder shaft; 11, electric position adjusting rod; 12, prismatic hole ring; 13, insertion cylinder; 14, outward expanding arc plate; 15, expanding shaft; 16, conical column table; 17, transmission rod; 18, abutting alignment pointed head; 19, abutting alignment slot; 20, end surface tooth ring; 21, overhanging frame; 22, lifting frame; 23, electric lifting rod; 24, adjusting frame; 25, electric pushing rod; 26, electric telescopic control rod; 27, hoisting frame; 28, support tube frame; 29, counter shaft; 30, front counter clamping frame; 31, rear counter clamping frame; 32, lower extension blocking rod; 33, eccentric shaft; 34, transmission bent rod; 35, transmission double linkage frame; 36, side strip hole; 37, hinged ear frame; 38, side stepped guide rod; 39, insertion alignment sleeve; 40, electric telescopic rod; 41, speed reducer motor; 42, transmission pulley; 43, drive pulley; 44, transmission belt set; 45, transmission plate; 46, installation ring; 47, installation hole ear; 48, installation bolt; 49, assembly hole; 50, supporting frame; 51, track frame; 52, moving vehicle; 53, support frame; 54, heating conveyor belt; 55, auxiliary conveyor belt; 56, slag collecting box; 57, slag collecting groove; 58, extended slag collecting plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0023] Embodiment, please refer to Figures 1-21The utility model provides a continuous step -by -step necking machine, including workstation 1, still include necking part and inductive heater 2, inductive heater 2 is arranged at the left side of workstation 1, and the left end of workstation 1 is provided with support frame 50, and inductive heater 2 is installed on support frame 50, and the front end of workstation 1 is fixedly installed with track frame 51, and mobile car 52 is installed on track frame 51, and the left end of track frame 51 is provided with support frame 53, and heating conveyor belt 54 and auxiliary conveyor belt 55 are respectively installed on support frame 53 and mobile car 52, and the installation position of heating conveyor belt 54 is higher than the installation position of auxiliary conveyor belt 55, and heating conveyor belt 54 is used for the mobile delivery of material relative to inductive heater 2, and the material to be necked can form slow uniform movement relative to inductive heater 2, realize the effective heating of material and guarantee the consistency of the effective heating time of multiple materials, and the right end of workstation 1 is provided with slag collecting box 56, and the top end of workstation 1 is provided with slag collecting groove 57, the inner bottom wall of slag collecting groove 57 adopts the inclined structure that gradually reduces from left to right, the left end of slag collecting box 56 is communicated with the right end lowest position of slag collecting groove 57, and the front end of workstation 1 is installed with extension slag receiving plate 58 for receiving the waste slag falling forward in the necking process of material, after the oxidation layer on the surface of material falls off in the necking process, can be received through slag collecting groove 57, and the waste slag received through slag collecting groove 57 can slide into slag collecting box 56 under the action of gravity, after forming waste slag collection through slag collecting box 56, the centralized recovery of waste slag is convenient, and the necking part includes two installation cylinder shells 3 and two installation head shells 4, and the two installation cylinder shells 3 and two installation head shells 4 are fixedly installed on workstation 1, and the two installation cylinder shells 3 are fixedly connected with two installation head shells 4, and two installation head shells 4 are communicated with two installation cylinder shells 3, and the front end of two installation head shells 4 is provided with installation port, and one -level necking cylinder 5 is fixedly installed in installation port, and the rear end of one -level necking cylinder 5 is provided with two -level necking cylinder 6, and three -level necking cylinder 7 is rotatably connected with the rear end of two -level necking cylinder 6, and two -level necking cylinder 6 and three -level necking cylinder 7 are rotatably installed in installation head shell 4, and installation ring 46 is rotatably connected on two -level necking cylinder 6 and three -level necking cylinder 7, and a plurality of mounting lugs 47 are fixedly connected in installation head shell 4, and a plurality of mounting lugs 47 are provided with mounting bolt 48, and a plurality of mounting lugs 47 are provided with a plurality of assembly holes 49 on two installation rings 46, and a plurality of assembly holes 49 are passed through a plurality of mounting bolts 48, and the linkage gear 8 for transmission between two -level necking cylinder 6 and three -level necking cylinder 7 is arranged in installation head shell 4, and two transmission pipe shafts 9 are rotatably connected with two installation cylinder shells 3, and the front end of two transmission pipe shafts 9 is in transmission connection with three -level necking cylinder 7, through the design of necking part, the execution function part of necking operation is formed, and the necking operation of pipe and bar two materials can be realized, and the switching between the necking mode formed by the two materials is more simple.

[0024] It needs to be further explained that the transmission pipe shaft 9 is provided with an inner pipe support, which includes a prism cylinder shaft 10 and an electric positioning rod 11. The prism cylinder shaft 10 is slidingly connected with a prism hole ring 12, and the prism hole ring 12 is rotationally connected in the transmission pipe shaft 9, which ensures that the transmission pipe shaft 9 does not rotate when rotating, and the prism cylinder shaft 10 can move axially with the transmission plate 45. The front end of the prism cylinder shaft 10 is fixedly connected with an insertion cylinder 13, the front end of the insertion cylinder 13 is fixedly connected with a plurality of outward expanding arc plates 14, the plurality of outward expanding arc plates 14 are matched with each other, the insertion cylinder 13 is provided with an enlarged shaft 15, the front end of the enlarged shaft 15 is provided with a tapered column table 16, the plurality of outward expanding arc plates 14 are matched with the tapered column table 16, the rear end of the enlarged shaft 15 is fixedly connected with a transmission rod 17, the electric positioning rod 11 is installed at the rear end of the prism cylinder shaft 10, and the actuator rod of the electric positioning rod 11 is connected with the transmission rod 17. The front end of the transmission pipe shaft 9 is provided with a plurality of abutting positioning grooves 19, the rear end of the three-stage necking cylinder 7 is provided with a plurality of abutting positioning sharp heads 18, and the plurality of abutting positioning sharp heads 18 are matched with the plurality of abutting positioning grooves 19 respectively. The rear end of the secondary necking cylinder 6 and the front end of the three-stage necking cylinder 7 are both fixedly connected with an end face tooth ring 20 engaged with the linkage gear 8. When the pipe material is subjected to necking operation, the inner support of the pipe material can be formed by the provision of the inner pipe support, which reduces the occurrence of wrinkles during the pipe necking process, ensures the necking quality of the pipe material, and the workbench 1 is provided with a power system for driving the transmission pipe shaft 9 and the inner pipe support. The power system includes two electric telescopic rods 40, two speed reduction motors 41 and two transmission pulleys 42. The two electric telescopic rods 40 and the two speed reduction motors 41 are both installed on the workbench 1. The main shaft of the two speed reduction motors 41 is both provided with a drive pulley 43. The two drive pulleys 43 are both transmissionally connected with a transmission belt group 44. The two transmission belt groups 44 are respectively transmissionally connected with the two transmission pulleys 42. The two transmission pulleys 42 are respectively splined with the two transmission pipe shafts 9. The actuator rod of the two electric telescopic rods 40 is both fixedly connected with a transmission plate 45. The two transmission plates 45 are respectively fixedly connected with the two prism cylinder shafts 10. The provision of the power system provides rotational driving power for the transmission pipe shaft 9 and operating power for the inner pipe support, which ensures the operation of the continuous progressive head shrinking machine.

[0025] It needs to be further explained that the two mounting head shells 4 are provided with taking and placing systems, the taking and placing systems comprise cantilever frames 21 fixedly connected with the mounting head shells 4, the cantilever frames 21 are slidably connected with lifting frames 22, the cantilever frames 21 are provided with electric lifting rods 23, the execution rods of the electric lifting rods 23 are connected with the lifting frames 22, the bottom ends of the lifting frames 22 are slidably connected with adjusting frames 24, the adjusting frames 24 are provided with counter-rotating grabbing structures, the lifting frames 22 are provided with electric pushing rods 25, the execution rods of the electric pushing rods 25 are connected with the adjusting frames 24, the counter-rotating grabbing structures comprise electric telescopic control rods 26 and two hoisting frames 27, the two hoisting frames 27 are fixedly connected with the adjusting frames 24, the two hoisting frames 27 are fixedly connected with support pipe frames 28, the support pipe frames 28 are rotatably connected with two counter-rotating shafts 29, the two counter-rotating shafts 29 are fixedly connected with front counter-rotating clamping frames 30 and rear counter-rotating clamping frames 31, the front counter-rotating clamping frames 30 and the rear counter-rotating clamping frames 31 on one of the counter-rotating shafts 29 are fixedly connected with lower extension blocking rods 32, eccentric shafts 33 are arranged on the two counter-rotating shafts 29, the two eccentric shafts 33 are rotatably connected with transmission bent rods 34, the electric telescopic control rods 26 are arranged in the adjusting frames 24, the execution rods of the electric telescopic control rods 26 are fixedly connected with transmission double connecting frames 35, the two transmission bent rods 34 are connected with the transmission double connecting frames 35, two side strip holes 36 are formed in the adjusting frames 24, hinged ear frames 37 are slidably connected in the two side strip holes 36, the two hinged ear frames 37 are hinged with the two transmission bent rods 34 respectively, the two hinged ear frames 37 are fixedly connected with the transmission double connecting frames 35, a plurality of side stepped guide rods 38 are fixedly connected with the cantilever frames 21, a plurality of insertion alignment sleeves 39 are fixedly connected outside the lifting frames 22, the plurality of side stepped guide rods 38 are matched with the plurality of insertion alignment sleeves 39 respectively, through the design of the taking and placing systems, the function structure of lifting and insertion of the material to be necked for the necked part is formed, the automatic conveying and taking and placing of the material can be realized, the overall automation degree of the equipment is higher, and the practicability is better.

[0026] The induction heater 2, the electric positioning rod 11, the electric lifting rod 23, the electric pushing rod 25, the electric telescopic control rod 26, the electric telescopic rod 40, the speed reducer motor 41, the moving vehicle 52, the heating conveying belt 54 and the auxiliary conveying belt 55 in the embodiment are all conventional devices known by the person skilled in the art and purchased on the market, in the application, we only use them, and do not improve their structures and functions, the setting mode, the mounting mode and the electrical connection mode can be understood by the person skilled in the art as long as they are debugged and operated according to the requirements of the instruction manual, and here, they will not be described in detail.

[0027] In summary, the working principle of the continuous progressive neck-in machine is as follows: before use, the continuous progressive neck-in machine is first installed and placed as a whole at the desired use location, and the control circuit is installed for the induction heater 2, the electric positioning rod 11, the electric lifting rod 23, the electric pushing rod 25, the electric telescopic control rod 26, the electric telescopic rod 40, the reduction motor 41, the moving vehicle 52, the heating conveying belt 54, and the auxiliary conveying belt 55. Then, the controller is connected to the control circuit, and the operation of the controller and the control circuit can realize the coordinated operation of the induction heater 2, the electric positioning rod 11, the electric lifting rod 23, the electric pushing rod 25, the electric telescopic control rod 26, the electric telescopic rod 40, the reduction motor 41, the moving vehicle 52, the heating conveying belt 54, and the auxiliary conveying belt 55. During use, the induction heater 2 is first started. The front of the induction heater 2 is provided with an insertable through slot. When the material enters the through slot, the material can be heated. Then, the two reduction motors 41 are started. Under the transmission of the transmission pulley 42, the drive pulley 43, and the transmission belt set 44, the two reduction motors 41 drive the two transmission shafts 9 to rotate, respectively. The two transmission shafts 9 drive the two three-stage necking cylinders 7 to rotate, respectively. When the three-stage necking cylinders 7 rotate, the end face tooth rings 20 on them follow the movement. Through the meshing transmission of the linkage gear 8, the end face tooth rings 20 on the two-stage necking cylinders 6 will rotate in the opposite direction, so that the two two-stage necking cylinders 6 and the corresponding three-stage necking cylinders 7 form synchronous reverse rotation.

[0028] The material to be necked is placed on the heating conveyor belt 54. Since the heating conveyor belt 54 is provided with multiple spacing plates, the material between two adjacent spacing plates will move under the pushing action of the spacing plates to avoid the material slipping relative to the heating conveyor belt 54. The material placed on the heating conveyor belt 54 will move with the heating conveyor belt 54 into and through the through slot. The material passing through the through slot will be heated by the induction heater 2 to form the heated head of the material to be necked. The heated material will be conveyed by the heating conveyor belt 54 onto the auxiliary conveyor belt 55, and the further conveying of the heated material will be realized by the electric operation of the auxiliary conveyor belt 55. The electrically operated lifting rod 23 controls the lowering of the lifting frame 22. During the lowering of the lifting frame 22, the electrically operated telescopic control rod 26 realizes the relative lowering of the transmission double frame 35 in the adjusting frame 24. Since the transmission double frame 35 will drive the synchronous lowering of the two hinged ear frames 37, the lowering of the two hinged ear frames 37 will drive the two transmission curved rods 34, which will finally drive the two eccentric shafts 33, and finally realize the synchronous relative rotation of the two counter-rotating shafts 29. When the two counter-rotating shafts 29 rotate synchronously, the corresponding front counter-rotation clamping frames 30 on the two counter-rotating shafts 29 will open, and the corresponding rear counter-rotation clamping frames 31 on the two counter-rotating shafts 29 will also open. During this process, the lower extension blocking rod 32 will also rotate and lift. When the corresponding front counter-rotation clamping frames 30 on the two counter-rotating shafts 29 are fully opened, the corresponding rear counter-rotation clamping frames 31 on the two counter-rotating shafts 29 will also be fully opened. The height of the lifting frame 22 is continuously controlled by the electrically operated lifting rod 23 until the lower end of the lower extension blocking rod 32 is lower than the supporting conveying surface of the auxiliary conveyor belt 55, and the lowest end of the front counter-rotation clamping frame 30 and the rear counter-rotation clamping frame 31 is higher than the highest position of the material on the auxiliary conveyor belt 55. In this state, when the material is conveyed from left to right by the operation of the auxiliary conveyor belt 55, the material can pass under the front counter-rotation clamping frame 30 and the rear counter-rotation clamping frame 31, and the material can be blocked by the lower extension blocking rod 32 to avoid excessive displacement of the material through the working area of the taking and placing system. The text and drawings of the present embodiment only include a single heating conveyor belt 54 and a single auxiliary conveyor belt 55. In actual use, multiple heating conveyor belts 54 and multiple auxiliary conveyor belts 55 can be used according to the specific length of the material.

[0029] Further, when the downwardly extending blocking rod 32 forms a block to the material, the electric telescopic control rod 26 controls the transmission double connecting frame 35 to form a position elevation in the adjusting frame 24 to realize the reverse rotation clamping of the two front counter-rotating clamping frames 30 which are in a rotating state of separation, and also causes the reverse movement of the two rear counter-rotating clamping frames 31 which are in a rotating state of separation to form a movement closure. In this process, the downwardly extending blocking rod 32 forms an auxiliary pushing from right to left to the blocked material to make the material enter between the two front counter-rotating clamping frames 30 which are about to be closed by rotation, and at the same time, the material also enters between the two rear counter-rotating clamping frames 31 which are about to be closed by rotation, and when the two front counter-rotating clamping frames 30 are closed by rotation, they can form clamping to the material, and when the two rear counter-rotating clamping frames 31 are closed by rotation, they can also form clamping to the material. Then the electric lifting rod 23 works to control the lifting frame 22 to form a relative elevation with respect to the cantilever frame 21 to realize the lifting of the material clamped between the two front counter-rotating clamping frames 30 and the two rear counter-rotating clamping frames 31. When the material enters the height matching with the primary necking cylinder 5, the electric pushing rod 25 is electrically operated to realize the sliding adjustment of the adjusting frame 24 with respect to the lifting frame 22 to make the material form insertion with respect to the primary necking cylinder 5. Since the primary necking cylinder 5, the secondary necking cylinder 6 and the tertiary necking cylinder 7 are sequentially arranged from front to back, during the insertion of the material, the material will enter the primary necking cylinder 5, the secondary necking cylinder 6 and the tertiary necking cylinder 7 in sequence according to the insertion range of the material. Since the inner diameters of the primary necking cylinder 5, the secondary necking cylinder 6 and the tertiary necking cylinder 7 are gradually reduced, the necking degree formed by the primary necking cylinder 5, the secondary necking cylinder 6 and the tertiary necking cylinder 7 is gradually increased. Since the secondary necking cylinder 6 and the tertiary necking cylinder 7 are in a relatively synchronous rotating state, because the secondary necking cylinder 6 and the tertiary necking cylinder 7 form a relative rotation with respect to the material, it can reduce the friction force during the insertion of the material and help the necking end of the material to better adapt to the shape and position in the secondary necking cylinder 6 and the tertiary necking cylinder 7, so the rotating insertion of the material is easier than the direct insertion, and the necking efficiency and quality of the material are also better. After the necking of the material is completed, the electric pushing rod 25 is operated to realize the relative forward movement of the adjusting frame 24 to make the material be drawn out with respect to the tertiary necking cylinder 7, the secondary necking cylinder 6 and the primary necking cylinder 5 in sequence. After the material necked completely is completely drawn out of the primary necking cylinder 5 and has a sufficient safety distance with respect to the primary necking cylinder 5 and the workbench 1, the electric pushing rod 25 stops running, the electric lifting rod 23 is operated to realize the lowering of the material, and finally the electric telescopic control rod 26 is operated to control the relative rotation opening of the two front counter-rotating clamping frames 30 which clamp the material and also control the relative rotation opening of the two rear counter-rotating clamping frames 31 which clamp the material to make the material fall on the auxiliary conveying belt 55 again. When the material is repositioned with respect to the auxiliary conveying belt 55, the lifting frame 22 should be lifted again after the material falls on the auxiliary conveying belt 55, and the lifting range of the lifting frame 22 is based on the premise that the material can move from the lower side of the downwardly extending blocking rod 32 again,After the auxiliary conveying belt 55 runs to realize the continuous right movement of the materials re-falling on the auxiliary conveying belt 55 until the movement and unloading of the materials on the auxiliary conveying belt 55 are completed.

[0030] Further, when the corresponding work material is a rod, the transmission plate 45 is pushed backward by the electric telescopic rod 40, the transmission plate 45 drives the insertion cylinder 13 to move backward through the prismatic cylinder shaft 10, and the multiple outwardly expanding arc plates 14 at the front end of the insertion cylinder 13 are synchronously moved backward to exit the three-stage necking cylinder 7. Since the tapered column table 16 moves backward synchronously with the multiple outwardly expanding arc plates 14, the interference between the tapered column table 16 and the multiple outwardly expanding arc plates 14 and the rod inserted into the three-stage necking cylinder 7 to form necking work can be avoided. When the corresponding work material is a pipe, the transmission plate 45 is pulled forward by the electric telescopic rod 40, the multiple outwardly expanding arc plates 14 at the front end of the insertion cylinder 13 are synchronously moved forward to sequentially insert into the three-stage necking cylinder 7, the two-stage necking cylinder 6, and the one-stage necking cylinder 5, then the pipe to be reduced in diameter is sequentially inserted into the one-stage necking cylinder 5, the two-stage necking cylinder 6, and the three-stage necking cylinder 7, and the tapered column table 16 is moved by the electric positioning rod 11 through the transmission rod 17 and the expansion shaft 15 to control the movement of the tapered column table 16, so that the tapered column table 16 is further inserted into the area surrounded by the multiple outwardly expanding arc plates 14 to push the multiple outwardly expanding arc plates 14 outward, so as to expand the overall external size of the multiple outwardly expanding arc plates 14, thereby facilitating the auxiliary support of the pipe in the reduced diameter state, reducing the wrinkles of the pipe during necking, ensuring the necking quality of the pipe, and after the necking is completed, the electric positioning rod 11 is operated to move the tapered column table 16 forward relative to the multiple outwardly expanding arc plates 14, so that the elastic outward expansion of the multiple outwardly expanding arc plates 14 disappears, then the electric telescopic rod 40 is operated to move the multiple outwardly expanding arc plates 14 backward relative to the pipe, and finally the electric pushing rod 25 is operated to sequentially extract the material in the three-stage necking cylinder 7, the two-stage necking cylinder 6, and the one-stage necking cylinder 5, thereby completing the necking work of the pipe. Since the prismatic hole ring 12 is rotationally connected with the transmission pipe shaft 9, the prismatic cylinder shaft 10 in the prismatic hole ring 12 has good support effect, and the prismatic cylinder shaft 10 is fixedly connected with the transmission plate 45, so the prismatic cylinder shaft 10 has a limit in the rotation direction, that is, the transmission pipe shaft 9 rotates relative to the prismatic cylinder shaft 10, thereby ensuring that the multiple outwardly expanding arc plates 14 form stable support relative to the pipe during use, which can reduce the torsion of the pipe caused by the three-stage necking cylinder 7 and the two-stage necking cylinder 6 during rotation necking, thereby ensuring the necking quality of the pipe. Since two lifting frames 22 are used in this embodiment, the two lifting frames 22 are adjusted to form staggered lifting and lowering operation modes during actual operation, so as to facilitate the alternating taking and placing of the materials on the auxiliary conveying belt 55 by the two taking and placing systems. Thus, the operation interference between the two taking and placing systems can be reduced, and the overall operation efficiency of the continuous progressive head shrinking machine can be improved.

[0031] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A continuous progressive necker, comprising a worktable, characterized in that, Also include the neck part and induction heater, the induction heater is arranged in the left side of the workbench, the neck part includes two installation cylinder shell and two installation head shell, two installation cylinder shell and two installation head shell are installed on the workbench, two installation cylinder shell is fixedly connected with two installation head shell respectively, two installation head shell is communicated with two installation cylinder shell respectively, the front end of each installation head shell is provided with installation port, the installation port is fixedly installed with primary necking cylinder, the rear end of the primary necking cylinder is provided with secondary necking cylinder, the rear end of the secondary necking cylinder is rotatably connected with tertiary necking cylinder, the secondary necking cylinder and tertiary necking cylinder are rotatably installed in the installation head shell, and the installation head shell is provided with linkage gear for transmission between the secondary necking cylinder and the tertiary necking cylinder, two installation cylinder shell is rotatably connected with transmission pipe shaft, the front end of two transmission pipe shaft is in transmission connection with the tertiary necking cylinder, the transmission pipe shaft is provided with pipe support, the workbench is provided with power system for driving transmission pipe shaft and pipe support, two installation head shell is provided with taking and placing system.

2. A continuous stepwise necker as claimed in claim 1, characterized in that The pipe support includes a prismatic cylinder shaft and an electric position adjusting rod, the prismatic cylinder shaft is slidably connected with a prismatic hole ring, the prismatic hole ring is rotatably connected in the transmission pipe shaft, the front end of the prismatic cylinder shaft is fixedly connected with an insertion cylinder, the front end of the insertion cylinder is fixedly connected with a plurality of outward expanding arc plates, the plurality of outward expanding arc plates are matched with each other, an expanding shaft is arranged in the insertion cylinder, a tapered column table is arranged at the front end of the expanding shaft, the plurality of outward expanding arc plates are matched with the tapered column table, the expanding shaft is fixedly connected with a transmission rod, the electric position adjusting rod is installed at the rear end of the prismatic cylinder shaft, and the actuating rod of the electric position adjusting rod is connected with the transmission rod.

3. A continuous stepwise necker as claimed in claim 2, characterized in that The front end of the transmission pipe shaft is provided with a plurality of abutting alignment grooves, the rear end of the tertiary necking cylinder is provided with a plurality of abutting alignment sharp heads, the plurality of abutting alignment sharp heads are matched with the plurality of abutting alignment grooves respectively, the rear end of the secondary necking cylinder and the front end of the tertiary necking cylinder are fixedly connected with end face tooth rings engaged with the linkage gear.

4. A continuous stepwise necker as claimed in claim 3, wherein, The taking and placing system includes a cantilever frame, the cantilever frame is fixedly connected with the installation head shell, the cantilever frame is slidably connected with a lifting frame, the cantilever frame is provided with an electric lifting rod, the actuating rod of the electric lifting rod is connected with the lifting frame, the bottom end of the lifting frame is slidably connected with an adjusting frame, the adjusting frame is provided with a counter-rotating grabbing structure, the lifting frame is provided with an electric pushing rod, and the actuating rod of the electric pushing rod is connected with the adjusting frame.

5. A continuous stepwise necker as claimed in claim 4, characterized in that The counter rotating grabbing structure comprises an electric telescopic control rod and two lifting frames, both of which are fixedly connected with the adjusting frame, a support pipe frame is fixedly connected between the two lifting frames, two counter rotating shafts are rotationally connected in the support pipe frame, front and rear counter rotating clamping frames are fixedly connected on both of the counter rotating shafts, the front and rear counter rotating clamping frames on one of the counter rotating shafts on the right are fixedly connected with a lower extension blocking rod, eccentric shafts are arranged on both of the counter rotating shafts, transmission bent rods are rotationally connected on both of the eccentric shafts, the electric telescopic control rod is installed in the adjusting frame, and the execution rod of the electric telescopic control rod is fixedly connected with a transmission double connecting frame, and both of the transmission bent rods are connected with the transmission double connecting frame.

6. A continuous stepwise necker as claimed in claim 5, characterized in that Two side strip holes are formed in the adjusting frame, hinged ear frames are slidingly connected in both of the side strip holes, both of the hinged ear frames are hinged with both of the transmission bent rods, both of the hinged ear frames are fixedly connected with the transmission double connecting frame, a plurality of side stepped guide rods are fixedly connected on the overhanging frame, and a plurality of insertion alignment sleeves are fixedly connected outside the lifting frame, and the plurality of side stepped guide rods are matched with the plurality of insertion alignment sleeves respectively.

7. A continuous stepwise neck-in machine according to claim 6, characterized in that The power system comprises two electric telescopic rods, two speed reduction motors and two transmission pulleys, both of the electric telescopic rods and both of the speed reduction motors are installed on the workbench, drive pulleys are installed on the main shafts of both of the speed reduction motors, both of the drive pulleys are transmissionally connected with transmission belt groups, both of the transmission belt groups are transmissionally connected with both of the transmission pulleys, both of the transmission pulleys are spline-connected with two transmission pipe shafts, transmission plates are fixedly connected on the execution rods of both of the electric telescopic rods, and both of the transmission plates are fixedly connected with both of the prismatic cylinder shafts.

8. A continuous stepwise neck-in machine according to claim 7, characterized in that, Both of the secondary necking cylinders and the tertiary necking cylinder are rotationally connected with mounting rings, a plurality of mounting hole ears are fixedly connected in the mounting head shell, mounting bolts are arranged in the plurality of mounting hole ears, a plurality of assembly holes are arranged on both of the mounting rings, and the plurality of mounting bolts pass through the plurality of assembly holes respectively.

9. A continuous stepwise necker as claimed in claim 8, characterized in that The left end of the workbench is provided with a supporting frame, the induction heater is installed on the supporting frame, the front end of the workbench is fixedly provided with a track frame, the track frame is provided with a moving vehicle, the left end of the track frame is provided with a supporting frame, heating conveying belts and auxiliary conveying belts are respectively installed on the supporting frame and the moving vehicle, and the installation position of the heating conveying belts is higher than that of the auxiliary conveying belts.

10. A continuous stepwise neck-in machine according to claim 9, characterized in that, The right end of the workbench is provided with a slag collecting box, the top end of the workbench is provided with a slag collecting groove, the inner bottom wall of the slag collecting groove adopts an inclined structure gradually decreasing from left to right, the left end of the slag collecting box is communicated with the right end of the slag collecting groove at the lowest position, and the front end of the workbench is provided with an extension slag receiving plate for receiving waste slag falling forward in the necking process.

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