A high-neck flange fully enclosed rolling forming die and forming process

Abstract

The present invention belongs to the technical field of non-cutting processing of metal plates, and in particular to a fully enclosed rolling forming die and forming process for a high-neck flange. Aiming at the problems that the existing process has many steps, low rolling efficiency, and cannot accurately roll the shape, the following scheme is proposed, including a base, a box body is fixed on the top of the base, and two doors are slidably matched on one side of the box body for closing the interior of the box body; it also includes a moving box sliding on the inner wall of the top of the box body, a mandrel passes through the bottom of the moving box, and the mandrel is used for punching and rolling the blank. A rotating ring is rotatably arranged on the top of the base. After punching, the mandrel of the present invention cooperates with the rolling die and the tire mold to directly perform the rolling operation, thereby reducing the rolling process and greatly improving the rolling efficiency. In addition, during the rolling process, the height of the blank can be limited by the cooperation of the cylinder, the lower moving ring and the conical wheel, thereby greatly controlling the accuracy of the blank forming.

Description

Technical Field

[0001] The invention relates to the technical field of non-cutting processing of metal plates, and in particular to a fully enclosed rolling forming die and a forming process for a high-neck flange. Background Art

[0002] High-neck flange, also known as long-neck flange, is a disc-shaped part widely used in petrochemical, urban water supply system, power company and other fields, mainly to achieve the connection between pipes. Due to its high and thin neck and significant difference in upper and lower cross-sections, the forming process is relatively complicated.

[0003] The high neck flange processing technology in traditional technology mainly includes the following steps: material preparation, extrusion of rough blank, punching and expanding, edge pressing and rolling forming.

[0004] However, there are still some obvious disadvantages in the high neck flange rolling forming process of the prior art:

[0005] 1. There are many process steps. The rough blank needs to be punched, expanded and edge pressed before it can be rolled and formed, which greatly reduces the rolling efficiency of the high neck flange;

[0006] 2. It is difficult to accurately control the shape of the high-neck flange during the rolling process, resulting in the need for large-scale trimming in the subsequent finishing stage.

[0007] In view of the above problems, the present invention document proposes a fully enclosed rolling forming die and forming process for a high-neck flange. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the existing process steps, low rolling efficiency and inability to accurately roll the shape, and to propose a high-neck flange fully enclosed rolling forming die and forming process.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A fully enclosed rolling forming die for a high-neck flange comprises a base, a box body is fixed on the top of the base, and two doors are slidably matched on one side of the box body to seal the inside of the box body;

[0011] It also includes a moving box that slides on the top inner wall of the box body, a mandrel runs through the bottom of the moving box, the mandrel is used for punching holes in the blank and rolling the blank, a rotating ring is rotatably arranged on the top of the base, and the rotating ring is used to carry the blank and reduce the friction between the blank and the base;

[0012] It also includes a rolling die and a tire mold, and the rolling die and the tire mold are both located above the base, and the rolling die, the tire mold and the mandrel are used to roll the blank. The top of the base is slidably connected with a mounting seat, and a conical wheel is rotatably provided on one side of the mounting seat close to the mandrel, which is used to limit the height of the blank;

[0013] A punching structure, arranged in the moving box, for punching holes in the blank;

[0014] The rolling structure is arranged on the top of the base and is used to drive the rolling die, tire mold and mandrel to rotate to complete the rolling of the billet;

[0015] The forming structure is arranged in the rolling die and is used to enable the tire die to complete the rolling of the neck of the blank;

[0016] The guiding structure is arranged on one side of the mounting seat and is used to ensure that the conical wheel always touches the top of the blank.

[0017] In a possible design, the punching structure includes a hydraulic cylinder fixed to the inner wall of the top of the moving box, the output shaft of the hydraulic cylinder is fixedly connected to the top of the core shaft, the cooperation between the hydraulic cylinder and the core shaft is used for punching, the bottom end of the core shaft is fixed with a punching cone head for punching, the top of the base is provided with a moving groove for making way for the core shaft and the punching cone head, the top of the box is provided with a rectangular hole, a nut block fixedly connected to the top of the moving box is slidably connected in the rectangular hole, the top of the box is rotatably connected to a first screw rod through a base plate, and the first screw rod is threadedly connected to the nut block, and the top of the box is connected to the first screw rod through a base plate. A first motor is fixed on the frame, and the output shaft of the first motor is fixedly connected to one end of the first screw rod through a coupling. The cooperation of the first screw rod and the nut block is used to drive the core shaft to move in the direction of the rolling die; the output shaft of the hydraulic cylinder pushes the core shaft to move downward, punches the blank through the core shaft, and the punching cone head extends into the moving groove, and then the first motor drives the first screw rod to rotate, and the first screw rod drives the core shaft and the blank to move in the direction of the rolling die and the tire mold through the nut block. Initially, the rolling die and one side of the tire mold are in the same plane until the blank touches the rolling die and the tire mold at the same time.

[0018] In a possible design, the rolling structure includes a sliding groove arranged on the top of the base, the bottom inner wall of the sliding groove is slidably connected to the first U-shaped frame, the top of the first U-shaped frame is rotatably connected to the first rotating shaft through a base plate, the outer wall sliding sleeve of the first rotating shaft is provided with a second rotating shaft, the outer wall rotating sleeve of the second rotating shaft is provided with a base, and the base is fixed to the bottom of the moving box, the outer wall of the core shaft is provided with a fourth bevel gear through the sliding groove and the sliding sleeve of the slider, and the fourth bevel gear rotates at the bottom of the moving box, one end of the second rotating shaft is fixed with a fourth bevel gear meshing with the third bevel gear, the first U-shaped frame is rotatably connected with a driving shaft, the top end of the driving shaft rotates and extends to the top of the first U-shaped frame and is fixed with the first bevel gear, the outer wall fixed sleeve of the first rotating shaft is provided with a second bevel gear meshing with the first bevel gear, the first rotating shaft and The rotation of the second rotating shaft can synchronously drive the driving shaft and the core shaft to rotate. The tire mold is fixedly sleeved on the outer wall of the driving shaft, and a circular track is fixed on the top of the base. The rolling mold sliding sleeve is arranged on the outer wall of the circular track. The top of the rolling mold touches the bottom of the tire mold, and the bottom end of the driving shaft passes through the rolling mold; the third motor drives the second bevel gear and the third bevel gear to rotate through the cooperation of the first rotating shaft and the second rotating shaft, and the third bevel gear drives the core shaft to rotate through the fourth bevel gear. The friction between the core shaft and the blank drives the blank to rotate, and the first rotating shaft drives the driving shaft and the tire mold to rotate through the second bevel gear, and the driving shaft drives the pin shaft to rotate through the sliding rod, and the pin shaft drives the rolling mold to rotate synchronously through the pin hole, and the rotation directions of the rolling mold, the tire mold and the core shaft are opposite, so the blank can be driven to rotate and the blank can be rolled.

[0019] In one possible design, the forming structure includes a pin hole arranged at the bottom of the rolling die, a pin shaft is arranged in the pin hole, a sliding rod is slidably passed through the driving shaft, the pin shaft is fixed to the top of one side of the sliding rod, and the driving shaft drives the rolling die to rotate synchronously through the cooperation of the sliding rod, the pin shaft and the pin hole, and the top of the base is rotatably connected to a second screw rod through a base plate, and the second screw rod rotates and extends to one side of the box body at one end away from the driving shaft, and a second motor is fixed to the top of the base, and the output shaft of the second motor is fixedly connected to one end of the second screw rod through a coupling, and the first U-shaped frame is threadedly connected to the second screw rod, and the second screw rod is used to control the movement of the tire mold, and the rolling mold and the tire mold cooperate to roll the billet; the second motor drives the second screw rod to rotate, and the second screw rod drives the first U-shaped frame, the driving shaft and the tire mold to move slowly. When the rolling die rolls the bottom of the billet, the tire mold extends outward to roll the neck of the billet.

[0020] In one possible design, the guiding structure includes a sliding rod fixed to the side of the mounting seat away from the conical wheel, one end of the sliding rod slides through the box body and fixes a limiting block, the outer wall of the sliding rod is provided with a second spring fixedly connected to the inner wall of one side of the box body, and the other end of the second spring is fixedly connected to the mounting seat, a pull rope is fixed to the side of the mounting seat away from the conical wheel, the other end of the pull rope is fixedly connected to one side of the moving box, and a plurality of guide wheels are rotatably arranged on one side of the box body for pulling the pull rope, and the cooperation of the moving box and the pull rope is used to drive the mounting seat to move; as the rolling die, tire mold and core shaft cooperate to roll, the diameter of the billet gradually expands, and when the moving box and the core shaft gradually move toward the direction of the driving shaft, the moving box pulls the mounting seat and the conical wheel outward through the pull rope to ensure that the conical wheel always touches the top of the billet during the expansion process.

[0021] In a possible design, two mounting grooves are provided on the top of the base, and the two mounting grooves are respectively located on both sides of the sliding groove. A second U-shaped frame is fixed in each of the two mounting grooves, and two movable holes are provided in the second U-shaped frame. Fixed rods are fixed in each of the two movable holes. The outer walls of the two fixed rods are slidingly sleeved with the same fixed shaft, and the outer walls of the two fixed rods are sleeved with a first spring. One end of the two first springs is fixedly connected to one side of the fixed shaft, and the other ends of the two first springs are respectively fixedly connected to the inner walls of one side of the two movable holes. The outer wall of the fixed shaft is rotatably sleeved with a guide roller that cooperates with the blank for guiding the blank. With the coordinated rolling of the rolling die, tire mold and core shaft, the diameter of the blank gradually expands, and the fixed shaft and the guide roller are tightly attached to the outer wall of the blank under the elastic force of the first spring. The guide roller cooperates with the bottom and neck of the blank to guide the forming of the blank.

[0022] In a possible design, a clearance groove connected to the sliding groove is provided on the top of the base, and the clearance groove is used to make way for the sliding rod and the pin shaft.

[0023] In one possible design, a liquid spray pipe is fixed to one side of the bottom of the moving box, and the liquid spray pipe is connected to an external water pump through a hose, and the water pump is used to transport coolant to the liquid spray pipe for cooling the core shaft. A moving block is slidably connected to the mounting seat through a strip groove, and the conical wheel rotates on one side of the moving block. A hydraulic cylinder is provided in the mounting seat, and the output shaft of the hydraulic cylinder is fixedly connected to the bottom of the moving block for controlling the height of the conical wheel.

[0024] In one possible design, a cylinder is fixed to the inner wall of one side of the moving box, and two guide rods slide through the moving box. The bottom ends of the two guide rods extend to the bottom of the moving box and are fixed with the same lower moving ring for controlling the height of the blank. The top ends of the two guide rods extend into the moving box and are fixed with the same upper moving ring, and the core shaft passes through the upper moving ring and the lower moving ring. The output shaft of the cylinder is fixedly connected to one side of the upper moving ring through a connecting plate, which is used to control the lifting and lowering of the upper moving ring and the guide rod; the output shaft of the cylinder pushes the upper moving ring and the lower moving ring to move downward, and the lower moving ring presses the top of the blank to control the height of the neck above the blank.

[0025] In this application, the forming process based on the fully enclosed rolling forming die of the high-neck flange includes the following steps:

[0026] S1, placing the blank heated to 1000°C on a rotating ring, the hydraulic cylinder pushes the mandrel downward to punch holes, and then the first motor drives the mandrel and the blank to move toward the rolling die and tire mold until they are in contact;

[0027] S2, during rolling, the third motor drives the mandrel, the rolling die, and the tire mold to rotate synchronously in opposite directions, the first screw drives the mandrel to move slowly for rolling, and the liquid spray pipe cools the mandrel;

[0028] S3, to form the top neck of the blank, the second motor drives the tire mold to move slowly outward, cooperates with the rolling die and the mandrel to roll and expand the diameter of the blank, and the guide roller is closely attached to the blank under the action of the first spring to guide the forming;

[0029] S4. The cylinder pushes the upper and lower moving rings to control the height of the neck above the blank. The conical wheel contacts the top of the blank to further control the height. The moving box ensures that the conical wheel is always in contact with the blank during the expansion process through the pull rope.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] In the present invention, the top of the first U-shaped frame is rotatably connected with the first rotating shaft, the outer wall sliding sleeve of the first rotating shaft is provided with a second rotating shaft, the outer wall sliding sleeve of the core shaft is provided with a fourth bevel gear, one end of the second rotating shaft is fixed with a fourth bevel gear meshing with the third bevel gear, the first U-shaped frame is rotatably connected with the driving shaft, the top end of the driving shaft is fixed with the first bevel gear, and the outer wall fixed sleeve of the first rotating shaft is provided with a second bevel gear meshing with the first bevel gear; the second bevel gear and the third bevel gear rotate synchronously, the third bevel gear drives the core shaft to rotate through the fourth bevel gear, the first rotating shaft drives the driving shaft and the tire mold and the rolling die to rotate through the second bevel gear, and the rolling die, the tire mold and the core shaft rotate in opposite directions, so the blank can be driven to rotate and the blank can be rolled;

[0032] In the present invention, the punching structure includes a hydraulic cylinder fixed on the inner wall of the top of the moving box, the output shaft of the hydraulic cylinder is fixedly connected to the top of the core shaft, the bottom end of the core shaft is fixed with a punching cone head, a nut block fixedly connected to the top of the moving box is slidably connected in the rectangular hole, and the top of the box body is connected to a first screw threadedly connected to the nut block by rotation; the output shaft of the hydraulic cylinder pushes the core shaft to move downward, punches the blank through the core shaft, and after the punching is completed, the blank can be driven to move to one side, and cooperates with the rolling die and the tire die to complete the rolling operation of the blank, and the punching and rolling are carried out simultaneously, thereby improving the work efficiency;

[0033] In the present invention, the forming structure includes a pin hole arranged at the bottom of the rolling die, a pin shaft is arranged in the pin hole, a sliding rod is slidably penetrated in the driving shaft, the pin shaft is fixed to the top of one side of the sliding rod, and the top of the base is rotatably connected to a second screw rod threadedly connected to the first U-shaped frame through a base plate; the second screw rod drives the first U-shaped frame, the driving shaft and the tire mold to move slowly, and when the rolling die rolls the bottom of the billet, the tire mold extends outward, and the rolling die and the tire mold rotate synchronously, and then the neck of the billet is rolled under the cooperation of the rolling die and the tire mold, and the high neck flange can be rolled without edge pressing, thereby improving the rolling efficiency;

[0034] In the present invention, two guide rods are slidably penetrated in the moving box, the bottom ends of the two guide rods are fixed with the same lower moving ring, the top ends of the two guide rods are fixed with the same upper moving ring, and the output shaft of the cylinder is fixedly connected to one side of the upper moving ring through a connecting plate; the second motor drives the second screw rod to rotate, and the second screw rod drives the first U-shaped frame, the driving shaft and the tire mold to move slowly, and when the rolling die rolls the bottom of the billet, the tire mold extends outward to roll the neck of the billet, and with the cooperation of the rolling die, the tire mold and the mandrel, the height of the billet can be controlled;

[0035] In the present invention, after the core shaft is punched, the rolling operation is directly carried out in cooperation with the rolling die and the tire mold, which reduces the rolling process and greatly improves the rolling efficiency. In addition, during the rolling process, the height of the blank can be limited by the cooperation of the cylinder, the lower moving ring and the conical wheel, which greatly controls the accuracy of the blank forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the three-dimensional structure of a fully enclosed rolling forming die for a high-neck flange provided in Example 1 of the present invention;

[0037] Figure 2 A schematic cross-sectional view of a fully enclosed rolling forming die for a high-neck flange provided in Example 1 of the present invention;

[0038] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of a moving box of a fully enclosed rolling forming die for a high-neck flange provided in Example 1 of the present invention;

[0039] Figure 4 A schematic diagram of a three-dimensional exploded structure of a base, a first U-shaped frame, and a second U-shaped frame of a high-neck flange fully enclosed rolling forming die provided in Example 1 of the present invention;

[0040] Figure 5 A schematic diagram of a three-dimensional cross-sectional structure of a first U-shaped frame, a tire mold and a rolling die of a high-neck flange fully enclosed rolling forming mold provided in Example 1 of the present invention;

[0041] Figure 6 A schematic diagram of a three-dimensional exploded structure of a rolling die, a tire die and a fourth bevel gear of a high-neck flange fully enclosed rolling forming die provided in Example 1 of the present invention;

[0042] Figure 7 A schematic diagram of a three-dimensional exploded cross-sectional structure of a base, a blank and a tapered wheel of a high-neck flange fully enclosed rolling forming die provided in Example 1 of the present invention;

[0043] Figure 8 A schematic diagram of a three-dimensional exploded structure of a second U-shaped frame and a fixed shaft of a fully enclosed rolling forming die for a high-neck flange provided in Example 1 of the present invention;

[0044] Fig. 9 This is a schematic diagram of the three-dimensional cross-sectional structure of a moving box of a high-neck flange fully enclosed rolling forming die provided in Example 2 of the present invention.

[0045] In the figure: 1, base; 2, box body; 3, door; 4, rotating ring; 5, blank; 6, rolling die; 7, tire mold; 8, mandrel; 9, mounting seat; 10, conical wheel; 11, moving box; 12, hydraulic cylinder; 13, nut block; 14, first screw rod; 15, first motor; 16, rectangular hole; 17, moving groove; 18, sliding groove; 19, first U-shaped frame; 20, second screw rod; 21, second motor; 22, driving shaft; 23, circular track; 24, sliding rod; 25, pin shaft; 26, pin hole; 27, first bevel gear; 28, first A rotating shaft; 29, a second bevel gear; 30, a third motor; 31, a base; 32, a second rotating shaft; 33, a third bevel gear; 34, a fourth bevel gear; 35, a clearance groove; 36, a mounting groove; 37, a second U-shaped frame; 38, a moving hole; 39, a fixing rod; 40, a first spring; 41, a fixing shaft; 42, a guide roller; 43, a sliding rod; 44, a second spring; 45, a limiting block; 46, a pull rope; 47, a guide wheel; 48, a cylinder; 49, an upper moving ring; 50, a guide rod; 51, a lower moving ring; 52, a liquid spraying pipe; 53, a stamping cone head. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0047] Example 1: Reference Figure 1 The rolling forming die is used in the field of mine parts processing. The die includes a base 1, and a box 2 is fixedly installed on the top of the base 1. Two doors 3 are designed on one side of the box 2. The two doors 3 slide with the box 2 and can be easily opened or closed to seal the inside of the box 2 to ensure safety and stability during the rolling process.

[0048] Reference Figure 2 A moving box 11 is slidably mounted on the top inner wall of the box body 2. A mandrel 8 runs through the bottom of the moving box 11. The main function of the mandrel 8 is to punch and roll the blank 5. In order to reduce the friction between the blank 5 and the base 1, a rotating ring 4 is rotatably arranged on the top of the base 1, and the rotating ring 4 is used to carry the blank 5.

[0049] Reference Figure 2 and Figure 5 In addition, the mold also includes a rolling die 6 and a tire die 7, both of which are located above the base 1. The rolling die 6, the tire die 7 cooperate with the mandrel 8 to complete the rolling of the blank 5. On the top of the base 1, there is also a mounting seat 9 slidably connected, and a conical wheel 10 is rotatably provided on the side of the mounting seat 9 close to the mandrel 8. The conical wheel 10 is used to limit the height of the blank 5 to ensure the stability of the blank 5 during the rolling process.

[0050] Reference Figure 2 and Figure 3Next, the various structures of the mold are described in detail: Punching structure: A hydraulic cylinder 12 is fixedly installed on the top inner wall of the moving box 11. The output shaft of the hydraulic cylinder 12 is fixedly connected to the top of the mandrel 8. Through the extension and contraction of the hydraulic cylinder 12, the mandrel 8 can be driven to move up and down, thereby punching the blank 5. A punching cone head 53 is fixed to the bottom end of the mandrel 8 for actual punching operation. At the top of the base 1, a moving groove 17 is designed to make way for the mandrel 8 and the punching cone head 53. At the same time, a rectangular hole 16 is provided at the top of the box body 2, and a nut block 13 is slidably connected in the rectangular hole 16, and the nut block 13 is fixedly connected to the top of the moving box 11. The top of the box body 2 is also rotatably connected to a first screw rod 14 through a base plate, and the first screw rod 14 is threadedly connected to the nut block 13. At the top of the box body 2, a first motor 15 is also fixedly installed through a frame, and the output shaft of the first motor 15 is fixedly connected to one end of the first screw rod 14 through a coupling. The first motor 15 drives the first screw rod 14 to rotate, and then drives the moving box 11 and the core shaft 8 to move horizontally through the nut block 13 .

[0051] During operation, the output shaft of the hydraulic cylinder 12 pushes the mandrel 8 downward, punches holes in the blank 5 through the mandrel 8, and the punching cone 53 extends into the moving groove 17. Then, the first motor 15 drives the first screw 14 to rotate, and the first screw 14 drives the mandrel 8 and the blank 5 to move toward the rolling die 6 and the tire mold 7 through the nut block 13. Initially, the rolling die 6 and one side of the tire mold 7 are in the same plane until the blank 5 contacts the rolling die 6 and the tire mold 7 at the same time.

[0052] Reference Figure 2 , Figure 4 and Figure 5 , rolling structure: A sliding groove 18 is designed at the top of the base 1, and a first U-shaped frame 19 is slidably connected to the bottom inner wall of the sliding groove 18. A first rotating shaft 28 is rotatably connected to the top of the first U-shaped frame 19 through a base plate, and a second rotating shaft 32 is provided on the outer wall sliding sleeve of the first rotating shaft 28. A base 31 is rotatably provided on the outer wall of the second rotating shaft 32, and the base 31 is fixed to the bottom of the moving box 11. A fourth bevel gear 34 is provided on the outer wall of the core shaft 8 through a sliding groove and a sliding sleeve, and the fourth bevel gear 34 rotates on the bottom of the moving box 11. A third bevel gear 33 meshing with the fourth bevel gear 34 is fixed at one end of the second rotating shaft 32. A driving shaft 22 is rotatably connected in the first U-shaped frame 19, and the top end of the driving shaft 22 rotates and extends to the top of the first U-shaped frame 19 and is fixed with a first bevel gear 27. A second bevel gear 29 meshing with the first bevel gear 27 is fixedly provided on the outer wall of the first rotating shaft 28. Through such a design, the rotation of the first rotating shaft 28 and the second rotating shaft 32 can synchronously drive the driving shaft 22 and the core shaft 8 to rotate.

[0053] Reference Figure 2 , Figure 5 and Figure 6 The tire mold 7 is fixedly sleeved on the outer wall of the driving shaft 22. A circular track 23 is also fixed on the top of the base 1, and the rolling die 6 is slidably sleeved on the outer wall of the circular track 23. The top of the rolling die 6 touches the bottom of the tire mold 7, and the bottom end of the driving shaft 22 passes through the rolling die 6. In order to drive these components to rotate, a third motor 30 can be provided, and the output shaft of the third motor 30 can be connected to the first rotating shaft 28 through an appropriate transmission mechanism.

[0054] During operation, the third motor 30 drives the second bevel gear 29 and the third bevel gear 33 to rotate through the cooperation of the first rotating shaft 28 and the second rotating shaft 32. The third bevel gear 33 drives the mandrel 8 to rotate through the fourth bevel gear 34, and the friction between the mandrel 8 and the blank 5 drives the blank 5 to rotate. At the same time, the first rotating shaft 28 drives the driving shaft 22 and the tire mold 7 to rotate through the second bevel gear 29. The driving shaft 22 also drives the pin 25 to rotate through the sliding rod 24, and the pin 25 drives the rolling die 6 to rotate synchronously through the pin hole 26. Since the rolling die 6, the tire mold 7 and the mandrel 8 rotate in opposite directions, they can drive the blank 5 to rotate and roll the blank 5.

[0055] Reference Figure 2 , Figure 5 and Figure 6 , Molding structure: An appropriate molding mechanism can be set in the rolling die 6 to enable the tire mold 7 to complete the rolling of the neck of the blank 5 during the rolling process to form the required high-neck flange shape. At the bottom of the rolling die 6, we specially set a pin hole 26, and a pin shaft 25 is embedded in the pin hole 26. In order to drive the rotation of the rolling die 6, we slide and install a sliding rod 24 inside the driving shaft 22, and the pin shaft 25 is fixed on the top of one side of the sliding rod 24. This structure ensures that when the driving shaft 22 rotates, the rolling die 6 can be driven to rotate synchronously through the cooperation of the sliding rod 24, the pin shaft 25 and the pin hole 26.

[0056] Reference Figure 2 and Figure 5 At the top of the base 1, we have a second screw rod 20 connected to the base plate. One end of the second screw rod 20 extends to one side of the box body 2 and is fixedly connected to the output shaft of the second motor 21 through a coupling. The start of the second motor 21 can drive the rotation of the second screw rod 20. The first U-shaped frame 19 and the second screw rod 20 are threadedly connected. Therefore, when the second screw rod 20 rotates, the first U-shaped frame 19, the drive shaft 22 and the tire mold 7 will slowly move along the axis direction of the second screw rod 20.

[0057] Specifically, during the rolling process, the rolling die 6 rolls the bottom of the blank 5, while the tire mold 7 extends outward to roll the neck of the blank 5. By driving the second lead screw 20 by the second motor 21, we can accurately control the movement of the tire mold 7, thereby achieving accurate rolling of the blank 5.

[0058] Reference Figure 2 and Figure 7 , Guiding structure: On one side of the mounting seat 9, a guiding mechanism can be provided to make the conical wheel 10 always touch the top of the blank 5 to ensure the stability of the blank 5 during the rolling process. On the side of the mounting seat 9 away from the conical wheel 10, we fixed a slide bar 43, one end of which slides through the box body 2 and fixes a limiting block 45 to prevent the slide bar 43 from completely sliding out of the box body 2. On the outer wall of the slide bar 43, we sleeved a second spring 44, one end of which is fixedly connected to the inner wall of one side of the box body 2, and the other end is fixedly connected to the mounting seat 9. Such a design can ensure that the mounting seat 9 can have a certain amount of moving space when subjected to external force, and at the same time can be restored to its original position by the elastic force of the second spring 44. On the side of the mounting seat 9 away from the conical wheel 10, we also fixed a pull rope 46, the other end of which is fixedly connected to one side of the moving box 11. On one side of the box body 2, we rotate a plurality of guide wheels 47, which are used to pull the pull rope 46 to ensure that the pull rope 46 can move smoothly.

[0059] Specifically, as the rolling die 6, the tire mold 7 and the mandrel 8 cooperate to roll, the diameter of the blank 5 will gradually expand. In this process, the moving box 11 and the mandrel 8 will gradually move toward the driving shaft 22. The movement of the moving box 11 will pull the mounting seat 9 and the conical wheel 10 outward through the pull rope 46, thereby ensuring that the conical wheel 10 always keeps in contact with the top of the blank 5 during the expansion of the blank 5.

[0060] Reference Figure 4 , Figure 7 and Figure 8 At the top of the base 1, we set two installation grooves 36, which are respectively located on both sides of the sliding groove 18. In the installation grooves 36, we fixed the second U-shaped frame 37, and each second U-shaped frame 37 is provided with two moving holes 38. In the two moving holes 38, we fixed the fixing rod 39, and a fixing shaft 41 is slidably sleeved on the outer wall of the fixing rod 39. In order to maintain the stability of the fixing shaft 41, we sleeved two first springs 40 on the outer wall of the fixing rod 39, one end of the two first springs 40 is fixedly connected to one side of the fixing shaft 41, and the other end is fixedly connected to the inner wall of one side of the moving hole 38.

[0061] Reference Figure 8, we rotatably sleeve a guide roller 42 on the outer wall of the fixed shaft 41, and the guide roller 42 cooperates with the blank 5 to guide the blank 5. As the rolling die 6, the tire mold 7 and the mandrel 8 cooperate to roll, the diameter of the blank 5 will gradually expand. In this process, the fixed shaft 41 and the guide roller 42 will cling to the outer wall of the blank 5 under the elastic force of the first spring 40. The guide roller 42 cooperates with the bottom and neck of the blank 5 to guide the forming of the blank 5 and ensure that the rolled high-neck flange has precise size and shape.

[0062] Reference Figure 4 and Figure 6 The top of the base 1 of the mold is not only provided with a sliding groove 18, but also provided with a clearance groove 35 connected to the sliding groove 18. The design of the clearance groove 35 is mainly to provide enough space for the sliding rod 24 and the pin 25 so that they will not be hindered during the movement, thereby ensuring the smooth operation between the various parts of the mold.

[0063] Reference Figure 2 Furthermore, a liquid spraying pipe 52 is fixed to one side of the bottom of the moving box 11. The liquid spraying pipe 52 is connected to an external water pump through a hose, forming a coolant delivery system. When the temperature of the mandrel 8 rises during a long period of operation, the water pump can deliver the coolant to the liquid spraying pipe 52, and the mandrel 8 is cooled through the liquid spraying pipe 52 to ensure the working performance and life of the mandrel 8.

[0064] A strip groove is designed in the mounting seat 9, and a moving block is slidably connected through the strip groove. The conical wheel 10 rotates on one side of the moving block. In addition, a hydraulic cylinder is also provided in the mounting seat 9, and its output shaft is fixedly connected to the bottom of the moving block. When the height of the conical wheel 10 needs to be adjusted, it is only necessary to start the hydraulic cylinder, and the output shaft of the hydraulic cylinder will push the moving block up and down, thereby driving the conical wheel 10 to adjust its height.

[0065] Through the above-mentioned design and implementation method, the various parts of the mold can work together to achieve efficient and accurate rolling forming of the blank 5 and meet the production requirements of the high-neck flange. At the same time, the spraying of the coolant and the height adjustment of the conical wheel 10 can also ensure the stability and durability of the mold during the working process.

[0066] Example 2: Reference Fig. 9, improved on the basis of Example 1: in the internal structure of the moving box 11, a cylinder 48 is fixed to the inner wall of one side. In the moving box 11, two guide rods 50 are also slidably penetrated. The bottom ends of the two guide rods 50 extend to the bottom of the moving box 11, and a lower moving ring 51 is fixed together. The design of this lower moving ring 51 is mainly used to control the height of the blank 5. At the same time, the top ends of the two guide rods 50 extend into the moving box 11, and an upper moving ring 49 is fixed together. The core shaft 8 penetrates this upper moving ring 49 and the lower moving ring 51.

[0067] In order to realize the lifting and lowering control of the upper moving ring 49 and the guide rod 50, the output shaft of the cylinder 48 is fixedly connected to one side of the upper moving ring 49 through a connecting plate. When it is necessary to adjust the height of the neck above the blank 5, just start the cylinder 48, and the output shaft of the cylinder 48 will push the upper moving ring 49 to move up and down along the guide rod 50. Since the lower moving ring 51 is fixedly connected to the bottom end of the guide rod 50, the lower moving ring 51 will also move synchronously. When the lower moving ring 51 is pressed on the top of the blank 5, the height of the neck above the blank 5 can be effectively controlled.

[0068] A forming process of a high-neck flange fully enclosed rolling forming die comprises the following steps:

[0069] S1. Place the blank 5 heated to 1000°C on the rotating ring 4. When punching and expanding the blank 5, the output shaft of the hydraulic cylinder 12 pushes the mandrel 8 downward, punches the blank 5 through the mandrel 8, and the punching cone head 53 extends into the moving groove 17. Then the first motor 15 drives the first screw 14 to rotate. The first screw 14 drives the mandrel 8 and the blank 5 to move toward the rolling die 6 and the tire mold 7 through the nut block 13. Initially, one side of the rolling die 6 and the tire mold 7 is in the same plane until the blank 5 touches the rolling die 6 and the tire mold 7 at the same time.

[0070] S2. During rolling, the third motor 30 drives the second bevel gear 29 and the third bevel gear 33 to rotate through the cooperation of the first rotating shaft 28 and the second rotating shaft 32, and the third bevel gear 33 drives the core shaft 8 to rotate through the fourth bevel gear 34. The friction between the core shaft 8 and the blank 5 drives the blank 5 to rotate, and the first rotating shaft 28 drives the driving shaft 22 and the tire mold 7 to rotate through the second bevel gear 29. The driving shaft 22 drives the pin 25 to rotate through the sliding rod 24, and the pin 25 drives the rolling die 6 to rotate synchronously through the pin hole 26. The rotation directions of the rolling die 6, the tire mold 7 and the core shaft 8 are opposite. When the rolling die 6, the tire mold 7 and the core shaft 8 rotate, the first screw 14 drives the core shaft 8 to move slowly toward the driving shaft 22, so that the blank 5 can be rolled, and the spray pipe 52 is connected with the external coolant to cool the core shaft 8 during the rolling process of the core shaft 8;

[0071] S3. In addition, during the rolling process, in order to roll the neck of the top of the blank 5 into shape, the second motor 21 drives the second screw 20 to rotate, and the second screw 20 drives the first U-shaped frame 19, the drive shaft 22 and the tire mold 7 to move slowly. When the rolling die 6 rolls the bottom of the blank 5, the tire mold 7 extends outward to roll the neck of the blank 5. With the coordinated rolling of the rolling die 6, the tire mold 7 and the core shaft 8, the diameter of the blank 5 gradually expands. The fixed shaft 41 and the guide roller 42 are tightly attached to the outer wall of the blank 5 under the elastic force of the first spring 40. The guide roller 42 cooperates with the bottom and neck of the blank 5 to guide the forming of the blank 5.

[0072] S4. In addition, when the blank 5 is rolled and formed, the output shaft of the cylinder 48 pushes the upper moving ring 49 and the lower moving ring 51 to move downward, and the lower moving ring 51 presses the top of the blank 5 to control the height of the neck above the blank 5. When the rolling die 6, the tire mold 7 and the core shaft 8 extrude the blank 5, the blank 5 is synchronously driven to rotate, and the bottom of the conical wheel 10 touches the top of the blank 5 to further control the height of the blank 5. In addition, when the moving box 11 and the core shaft 8 gradually move toward the driving shaft 22, the moving box 11 pulls the mounting seat 9 and the conical wheel 10 outward through the pull rope 46 to ensure that the conical wheel 10 always touches the top of the blank 5 during the expansion process.

[0073] However, as is well known to those skilled in the art, the working principles and wiring methods of the air cylinder 48, the hydraulic cylinder 12, the second motor 21, the third motor 30 and the first motor 15 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0074] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fully enclosed rolling forming die for a high-neck flange, characterized in that: It comprises a base (1), a box body (2) is fixed on the top of the base (1), and two doors (3) are slidably matched on one side of the box body (2) for sealing the interior of the box body (2); It also includes a movable box (11) sliding on the top inner wall of the box body (2), a mandrel (8) passing through the bottom of the movable box (11), the mandrel (8) being used for punching holes in the blank (5) and rolling the blank (5), a rotating ring (4) being rotatably arranged on the top of the base (1), and the rotating ring (4) being used for carrying the blank (5) and reducing the friction between the blank (5) and the base (1); It also includes a rolling die (6) and a tire die (7), and the rolling die (6) and the tire die (7) are both located above the base (1), and the rolling die (6), the tire die (7) and the mandrel (8) cooperate to roll the blank (5), and the top of the base (1) is slidably connected to a mounting seat (9), and a conical wheel (10) is rotatably provided on a side of the mounting seat (9) close to the mandrel (8) for limiting the height of the blank (5); A punching structure, arranged in the moving box (11), and used for punching holes in the blank (5); A rolling structure, arranged on the top of the base (1), used for driving the rolling die (6), the tire die (7) and the mandrel (8) to rotate to complete the rolling of the blank (5); A forming structure, arranged in the rolling die (6), used to enable the tire die (7) to complete the rolling of the neck of the blank (5); A guide structure, arranged on one side of the mounting seat (9), and used to ensure that the conical wheel (10) always contacts the top of the blank (5); The rolling structure comprises a sliding groove (18) arranged at the top of the base (1); the bottom inner wall of the sliding groove (18) is slidably connected to a first U-shaped frame (19); the top of the first U-shaped frame (19) is rotatably connected to a first rotating shaft (28) through a base plate; the outer wall of the first rotating shaft (28) is slidably sleeved with a second rotating shaft (32); the outer wall of the second rotating shaft (32) is rotatably sleeved with a base (31); and the base (31) is fixed to the bottom of the moving box (11); the outer wall of the core shaft (8) is slidably sleeved with a fourth bevel gear (34) through a sliding groove and a sliding block; and the fourth bevel gear (34) rotates on the bottom of the moving box (11); one end of the second rotating shaft (32) is fixed with a fourth bevel gear (34) meshing with a third bevel gear (33); A driving shaft (22) is rotatably connected inside the U-shaped frame (19); the top end of the driving shaft (22) is rotatably extended to the top of the first U-shaped frame (19) and is fixed with a first bevel gear (27); the outer wall of the first rotating shaft (28) is fixedly sleeved with a second bevel gear (29) meshing with the first bevel gear (27); the rotation of the first rotating shaft (28) and the second rotating shaft (32) can synchronously drive the driving shaft (22) and the core shaft (8) to rotate; the tire mold (7) is fixedly sleeved on the outer wall of the driving shaft (22); the top of the base (1) is fixedly sleeved with an annular track (23); the rolling die (6) is slidably sleeved on the outer wall of the annular track (23); the top of the rolling die (6) contacts the bottom of the tire mold (7), and the bottom end of the driving shaft (22) passes through the rolling die (6).

2. The fully enclosed rolling forming die for high-neck flange according to claim 1, characterized in that: The punching structure comprises a hydraulic cylinder (12) fixed to the inner wall of the top of the movable box (11); the output shaft of the hydraulic cylinder (12) is fixedly connected to the top of the core shaft (8); the cooperation between the hydraulic cylinder (12) and the core shaft (8) is used for punching; a punching cone head (53) is fixed to the bottom end of the core shaft (8) for punching; a movable groove (17) is provided on the top of the base (1) for making way for the core shaft (8) and the punching cone head (53); a rectangular hole (16) is provided on the top of the box body (2); A nut block (13) is slidably connected and fixedly connected to the top of the moving box (11); the top of the box body (2) is rotatably connected to a first screw rod (14) through a base plate, and the first screw rod (14) is threadedly connected to the nut block (13); a first motor (15) is fixed to the top of the box body (2) through a frame, and the output shaft of the first motor (15) is fixedly connected to one end of the first screw rod (14) through a coupling; the first screw rod (14) and the nut block (13) cooperate to drive the core shaft (8) to move in the direction of the rolling die (6).

3. The fully enclosed rolling forming die for high-neck flange according to claim 2, characterized in that: The molding structure comprises a pin hole (26) arranged at the bottom of the rolling die (6), a pin shaft (25) being arranged in the pin hole (26), a sliding rod (24) slidingly passing through the driving shaft (22), the pin shaft (25) being fixed to the top of one side of the sliding rod (24), the driving shaft (22) driving the rolling die (6) to rotate synchronously through the cooperation of the sliding rod (24), the pin shaft (25) and the pin hole (26), and the top of the base (1) is rotatably connected to a second screw rod (20) through a base plate. The second screw rod (20) has one end away from the driving shaft (22) and is rotated to extend to one side of the box body (2); a second motor (21) is fixed to the top of the base (1); an output shaft of the second motor (21) is fixedly connected to one end of the second screw rod (20) via a coupling; the first U-shaped frame (19) is threadedly connected to the second screw rod (20); the second screw rod (20) is used to control the movement of the tire mold (7); the rolling die (6) and the tire mold (7) cooperate to roll the blank (5).

4. The fully enclosed rolling forming die for high-neck flange according to claim 3, characterized in that: The guide structure comprises a slide bar (43) fixed to a side of the mounting seat (9) away from the conical wheel (10), one end of the slide bar (43) slides through the box body (2) and fixes a limit block (45), the outer wall of the slide bar (43) is sleeved with a second spring (44) fixedly connected to an inner wall of one side of the box body (2), and the other end of the second spring (44) is fixedly connected to the mounting seat (9), a pull rope (46) is fixed to a side of the mounting seat (9) away from the conical wheel (10), and the other end of the pull rope (46) is fixedly connected to a side of the moving box (11), and a plurality of guide wheels (47) are rotatably provided on one side of the box body (2) for pulling the pull rope (46), and the cooperation between the moving box (11) and the pull rope (46) is used to drive the mounting seat (9) to move.

5. The fully enclosed rolling forming die for high-neck flange according to claim 4, characterized in that: Two mounting grooves (36) are provided on the top of the base (1), and the two mounting grooves (36) are respectively located on both sides of the sliding groove (18). A second U-shaped frame (37) is fixed in each of the two mounting grooves (36), and two movable holes (38) are provided in the second U-shaped frame (37). A fixing rod (39) is fixed in each of the two movable holes (38). The outer walls of the two fixing rods (39) are slidingly sleeved with the same fixing shaft (41), and the outer walls of the two fixing rods (39) are sleeved with a first spring (40), one end of each of the two first springs (40) is fixedly connected to one side of the fixing shaft (41), and the other ends of each of the two first springs (40) are respectively fixedly connected to the inner walls of one side of the two movable holes (38), and the outer wall of the fixing shaft (41) is rotatably sleeved with a guide roller (42) that cooperates with the blank (5) for guiding the blank (5).

6. A fully enclosed rolling forming die for a high-neck flange according to claim 5, characterized in that: The top of the base (1) is provided with a clearance groove (35) which is connected to the sliding groove (18), and the clearance groove (35) is used to make way for the sliding rod (24) and the pin shaft (25).

7. A fully enclosed rolling forming die for a high-neck flange according to claim 6, characterized in that: A liquid spray pipe (52) is fixed to one side of the bottom of the movable box (11), and the liquid spray pipe (52) is connected to an external water pump through a hose, and the water pump is used to transport coolant to the liquid spray pipe (52) for cooling the core shaft (8). A movable block is slidably connected to the mounting seat (9) through a strip groove, and the conical wheel (10) rotates on one side of the movable block. A hydraulic cylinder is provided in the mounting seat (9), and the output shaft of the hydraulic cylinder is fixedly connected to the bottom of the movable block for controlling the height of the conical wheel (10).

8. The fully enclosed rolling forming die for high-neck flange according to claim 7, characterized in that: A cylinder (48) is fixed to an inner wall of one side of the moving box (11); two guide rods (50) are slidably inserted into the moving box (11); the bottom ends of the two guide rods (50) extend to the bottom of the moving box (11) and are fixed with a same lower moving ring (51) for controlling the height of the blank (5); the top ends of the two guide rods (50) extend into the moving box (11) and are fixed with a same upper moving ring (49); the core shaft (8) passes through the upper moving ring (49) and the lower moving ring (51); the output shaft of the cylinder (48) is fixedly connected to one side of the upper moving ring (49) through a connecting plate, and is used to control the lifting and lowering of the upper moving ring (49) and the guide rods (50).

9. A forming process of a fully enclosed rolling forming die for a high-neck flange according to claim 8, characterized in that: The following steps are involved: S1, placing a blank (5) heated to 1000° C. on a rotating ring (4), a hydraulic cylinder (12) pushing the mandrel (8) downward to punch a hole, and then a first motor (15) driving the mandrel (8) and the blank (5) to move toward the rolling die (6) and the tire mold (7) until they are in contact; S2, during rolling, the third motor (30) drives the mandrel (8), the rolling die (6), and the tire mold (7) to rotate synchronously in opposite directions, the first screw rod (14) drives the mandrel (8) to move slowly for rolling, and at the same time the liquid spray pipe (52) cools the mandrel (8); S3, in order to shape the top neck of the blank (5), the second motor (21) drives the tire mold (7) to slowly move outward, cooperates with the rolling die (6) and the mandrel (8) to roll and expand the diameter of the blank (5), and the guide roller (42) is closely attached to the blank (5) under the action of the first spring (40) to guide the shaping; S4, the cylinder (48) pushes the upper moving ring (49) and the lower moving ring (51) to control the height of the neck above the blank (5), and the conical wheel (10) contacts the top of the blank (5) to further control the height. The moving box (11) ensures that the conical wheel (10) is always in contact with the blank (5) during the expansion process through the pull rope (46).

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