Preparation device of TC4 titanium alloy bar

Abstract

The utility model discloses a TC4 titanium alloy bar preparation device in the field of metal processing equipment, which comprises a lower die holder, an upper die holder and a bar forming chamber mounted on the lower die holder, a piston rod capable of stretching downwards is arranged on the upper die holder, the bar forming chamber is of a barrel-shaped structure aligned with the piston rod, and the cross section of the barrel-shaped structure is matched with that of the piston rod. A lower die plate capable of sliding up and down is arranged in the bottom of the bar forming chamber, a lower die ejector rod capable of stretching upwards is arranged on a bottom plate of the lower die base, and the upper end of the lower die ejector rod penetrates through the lower die base and the bottom of the bar forming chamber and then is connected with the lower die plate. According to the TC4 titanium alloy bar extrusion forming device, the piston rod moving downwards is used for extruding loose raw materials in the bar forming chamber to form compact blocky or strip-shaped bars, then the lower die ejector rod is used for driving the lower die plate to move upwards, the formed bars are ejected out of the bar forming chamber, the TC4 titanium alloy bars formed through extrusion are obtained, the whole device is simple in structure, the cost is low, and the production efficiency is high. The device is convenient and flexible to use, can realize quick preparation and transfer of bars, and is high in production efficiency.

Description

Technical Field

[0001] The utility model relates to the field of metal processing equipment, in particular to a preparation device for TC4 titanium alloy bars. Background Art

[0002] TC4 titanium alloy has excellent comprehensive properties and is widely used in many fields such as aerospace. TC4 plates can be used as load-bearing components of aircraft, accounting for about 70% to 80% of the amount of titanium alloy used for load-bearing components. In recent years, new aircraft have put forward requirements such as large size, high weight reduction, and long life, which can significantly increase the demand for large-size titanium alloy plates for aircraft and significantly improve the manufacturing efficiency of aircraft. TC4 titanium alloy is generally obtained by smelting in a vacuum consumable arc furnace, and the raw material preparation method for smelting TC4 titanium alloy is rarely mentioned at present, because the raw materials of TC4 titanium alloy are mostly in the form of thin sheets and loose in volume, which is not convenient for smelting. In this regard, the applicant tried to first prepare the thin sheet or sponge-like TC4 titanium alloy raw materials into compact block or strip materials, and then smelt them. Since there is no similar process in the prior art, and there is no device for making the TC4 titanium alloy raw materials into block or strip structures, it is necessary to study a preparation device for TC4 titanium alloy bars. Utility Model Content

[0003] In order to realize the process of preparing TC4 titanium alloy by using compact block or strip TC4 titanium alloy raw materials, the technical problem to be solved by the utility model is: to provide a preparation device for TC4 titanium alloy bar.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] The preparation device of TC4 titanium alloy bar comprises a lower die base, an upper die base located above the lower die base and a bar forming chamber installed on the lower die base, the upper die base is provided with a piston rod which can be extended downward, the bar forming chamber is a barrel-shaped structure which is aligned with the piston rod and has a matching cross-section, a lower template which can slide up and down is provided at the bottom of the bar forming chamber, the bottom plate of the lower die base is provided with a lower die push rod which can be extended upward, and the upper end of the lower die push rod passes through the lower die base and the bottom of the bar forming chamber and is connected to the lower template.

[0006] Furthermore, four guide pillars are provided around the lower die base, the upper die base is installed on the top of the four guide pillars, the upper and lower ends of the guide pillars are provided with threaded structures, and the lower die base and the upper die base are fixed to the guide pillars by die base nuts.

[0007] Furthermore, it also includes a push plate, which is slidably connected to four guide pillars on all sides, the lower end of the piston rod is fixedly connected to the top of the push plate, and an upper mold column is provided at the bottom of the push plate, and the upper mold column is aligned with the bar forming chamber and the cross-section matches.

[0008] Furthermore, the piston rod and the upper mold column are respectively fixed to the push plate by a piston fixing plate and an upper mold fixing plate pressed on their end flanges, and the piston fixing plate and the upper mold fixing plate are fixed to the push plate by fastening bolts passing through the push plate and fastening nuts matching therewith.

[0009] Furthermore, a workbench is provided on the top of the lower die base, and the bar forming chamber is installed on the lower die base through the workbench. The lower die base is provided with a bolt mounting groove extending along its length direction, and the bolt head of the connecting bolt can be slidably set in the bolt mounting groove, and the other end of the connecting bolt passes through the strip holes on the workbench and the bottom flange of the bar forming chamber and cooperates with the clamping nut to press and fix the workbench and the bar forming chamber on the lower die base, and the length direction of the strip hole is perpendicular to the length direction of the bolt mounting groove.

[0010] Furthermore, the cross section of the bar forming chamber is rectangular, and the lower end of the upper mold column and the top of the lower mold plate are provided with symmetrical semicircular long grooves; the lower mold ejector rods include four, and the four lower mold ejector rods are arranged at intervals at the bottom of the lower mold plate.

[0011] Furthermore, a mechanical arm for clamping the formed bar is provided on the guide column near the top of the bar forming chamber.

[0012] Furthermore, a lower hydraulic cylinder is provided at the bottom of the lower die base, a piston plate is provided in the lower hydraulic cylinder, the lower end of the lower die push rod is fixed on the piston plate, a lower hydraulic fixing plate and a lower sealing ring are provided at the bottom opening of the lower hydraulic cylinder, the lower hydraulic fixing plate presses the lower sealing ring to the lower die base through the lower screws, and a lower hydraulic pipe interface is provided in the middle of the lower hydraulic fixing plate.

[0013] Furthermore, an upper hydraulic cylinder is provided on the top of the upper die base, the upper end of the piston rod is located in the upper hydraulic cylinder, an upper hydraulic fixing plate and an upper sealing ring are provided at the top opening of the upper hydraulic cylinder, the upper hydraulic fixing plate presses and fixes the upper sealing ring on the upper die base through upper screws, and an upper hydraulic pipe interface is provided in the middle of the upper hydraulic fixing plate.

[0014] Furthermore, the lower hydraulic pipe interface and the upper hydraulic pipe interface are respectively connected to a three-way valve through a hydraulic pipe, and the three-way valve is connected to a pressure-controllable hydraulic pump through another hydraulic pipe.

[0015] The beneficial effects of the utility model are as follows: the loose raw materials in the bar forming chamber are squeezed by a downwardly moving piston rod to form compact block or strip bars, and then the lower die plate is driven to move upward by a lower die push rod to push the formed bar out of the bar forming chamber to obtain extruded TC4 titanium alloy bars; the entire device has a simple structure, is convenient and flexible to use, can realize rapid preparation and transfer of bar materials, and has high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the front view of the structure of the utility model;

[0017] Figure 2 It is a top view of the structure of the utility model;

[0018] Figure 3 It is a structural schematic diagram of an upper mold column and a lower mold plate of the utility model.

[0019] Marked in the figure are, 1-lower die base, 2-upper die base, 3-bar forming chamber, 4-guide column, 5-push plate, 6-workbench, 7-mechanical arm, 8-raw material, 11-lower die push rod, 12-lower hydraulic cylinder, 13-piston plate, 14-lower hydraulic fixing plate, 15-lower sealing ring, 16-lower screw, 17-lower hydraulic pipe interface, 18-bolt mounting groove, 21-piston rod, 22-upper hydraulic cylinder, 23-upper hydraulic fixing plate, 24-upper sealing ring, 25-upper screw, 26-upper hydraulic pipe interface, 31-lower template, 32-strip hole, 41-die base nut, 51-upper die column, 52-piston fixing plate, 53-upper die fixing plate, 54-fastening bolt, 55-fastening nut, 56-semicircular long groove, 61-connecting bolt, 62-tightening nut. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] It should be noted that if there are directional indication terms in the present invention, such as up, down, left, right, front, and back directions and orientation terms, they are for the purpose of facilitating the description of the relative position relationship between components, and are not for the absolute position of the related components or the position relationship between components. They are only used to explain the relative position relationship and movement of the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly. If there are terms related to quantity in the present invention, such as "multiple", "multiple", "several", etc., they specifically refer to two or more.

[0022] like Figure 1As shown, the preparation device of TC4 titanium alloy bar of the utility model comprises a lower die base 1, an upper die base 2 located above the lower die base 1 and a bar forming chamber 3 installed on the lower die base 1, the upper die base 2 is provided with a piston rod 21 which can be extended downward, the bar forming chamber 3 is a barrel-shaped structure which is aligned with the piston rod 21 and has a matching cross-section, a lower template 31 which can slide up and down is provided at the bottom of the bar forming chamber 3, a lower die top rod 11 which can be extended upward is provided at the bottom of the lower die base 1, and the upper end of the lower die top rod 11 passes through the lower die base 1 and the bottom of the bar forming chamber 3 and is connected to the lower template 31. The use process of the utility model is to first put the loose raw material 8 into the bar forming chamber 3, then control the piston rod 21 to move downward so that it extends into the bar forming chamber 3, squeeze the raw material, and after reaching a predetermined pressure, move the piston rod 21 upward until it exits the bar forming chamber 3, then control the lower mold push rod 11 to move upward, and use the lower mold plate 31 to push the molded bar out of the bar forming chamber 3. After taking away the bar with other tools, the lower mold plate 31 returns to the bottom of the bar forming chamber 3 to prepare the secondary bar.

[0023] As for the arrangement of the lower die base 1 and the upper die base 2, the solution adopted by the utility model is that the lower die base 1 is used as a base, four guide pillars 4 are arranged around the lower die base 1, the upper die base 2 is installed on the top of the four guide pillars 4, the upper and lower ends of the guide pillars 4 are provided with threaded structures, and the lower die base 1 and the upper die base 2 are fixed on the guide pillars 4 through die base nuts 41. The four guide pillars 4 can ensure the reliability of the connection between the lower die base 1 and the upper die base 2, thereby better resisting the force exerted by the piston rod 21 on the raw material and ensuring the molding quality of the bar material.

[0024] Furthermore, it also includes a push plate 5, the four guide pillars 4 are slidably connected around the push plate 5, the lower end of the piston rod 21 is fixedly connected to the top of the push plate 5, and the bottom of the push plate 5 is provided with an upper die column 51, and the upper die column 51 is aligned with the bar forming chamber 3 and the cross section matches. After the upper die column 51 is used to extrude the raw material, the piston rod 21 can be of any shape and size, and does not have to match the bar forming chamber 3. Since the push plate 5 is slidably connected to the four guide pillars 4 at the same time, the push plate 5 can always move up and down on the vertical plane, and the stability of the movement is ensured, thereby avoiding the upper die column 51 from always being skewed during the pressing process, affecting the forming quality of the bar. In addition, after the push plate 5 is set, because the support area is increased, the upper die column 51 and the bar forming chamber 3 with larger lateral dimensions can be used, so as to produce larger-sized bars, thereby improving production efficiency.

[0025] As for the fixing method of the piston rod 21 and the upper die column 51 to the push plate 5, in order to facilitate replacement and maintenance, the solution adopted by the utility model is that the piston rod 21 and the upper die column 51 are fixed to the push plate 5 by the piston fixing plate 52 and the upper die fixing plate 53 pressed on the flanges at their ends, respectively, and the piston fixing plate 52 and the upper die fixing plate 53 are fixed to the push plate 5 by the fastening bolts 54 passing through the push plate 5 and the fastening nuts 55 matched therewith. In order to ensure the integrity of the structure, grooves for accommodating the flange, the piston fixing plate 52 and the upper die fixing plate 53 can be firstly provided on the upper and lower surfaces of the push plate 5 to ensure that the piston fixing plate 52 and the upper die fixing plate 53 are in a flush state with the upper and lower surfaces of the push plate 5 after the flanges are pressed. In order to reduce the number of connecting parts, the piston fixing plate 52 and the upper die fixing plate 53 share the same set or multiple sets of bolts and nuts for connection and fixing.

[0026] In order to facilitate the installation and adjustment of the position of the bar forming chamber 3, a workbench 6 is provided on the top of the lower die base 1, and the bar forming chamber 3 is installed on the lower die base 1 through the workbench 6. The lower die base 1 is provided with a bolt installation groove 18 extending along its length direction. The bolt head of the connecting bolt 61 is slidably arranged in the bolt installation groove 18, and the other end of the connecting bolt 61 passes through the bar hole 32 on the bottom flange of the workbench 6 and the bar forming chamber 3 and cooperates with the clamping nut 62 to press and fix the workbench 6 and the bar forming chamber 3 on the lower die base 1. Figure 2 As shown, the length direction of the strip hole 32 is perpendicular to the length direction of the bolt installation groove 18. The cross section of the bolt installation groove 18 is an inverted T-shaped structure, which can limit the bolt head of the connecting bolt 61 in the bolt installation groove 18 and can slide along the bolt installation groove 18. When installing the workbench 6 and the bar forming chamber 3, first pass the connecting bolt 61 through the strip hole 32 on the workbench 6 and the bar forming chamber 3, and then adjust the position of the workbench 6 and the bar forming chamber 3 so that the piston rod 21 or the upper mold column 51 can be inserted into the bar forming chamber 3. After ensuring alignment, tighten the clamping nut 62 to press and fix the workbench 6 and the bar forming chamber 3 on the lower mold base 1, ensuring that the upper mold column 51 is aligned with the bar forming chamber 3.

[0027] In order to press out long bars, such as Figure 3 As shown, the cross section of the bar forming chamber 3 can be set to a rectangular shape, and symmetrical semicircular long grooves 56 are set at the lower end of the upper mold column 51 and the top of the lower mold plate 31, so that a cylindrical or elliptical-cylindrical bar can be pressed out. After the lateral size of the bar forming chamber 3 is increased, in order to smoothly push out the bar, the lower mold push rods 11 preferably include four, and the four lower mold push rods 11 are arranged at intervals at the bottom of the lower mold plate 31 to ensure that the lower mold push rods 11 can smoothly push up the lower mold plate 31.

[0028] In addition, in order to facilitate the removal of the formed bar, a mechanical arm 7 for clamping the formed bar is provided on the guide column 4 near the top of the bar forming chamber 3. The mechanical arm 7 can grab the bar according to the set program and send it to the designated location, thereby reducing the labor intensity of the workers.

[0029] For the specific lifting and lowering method of the piston rod 21 and the lower die push rod 11, a ready-made hydraulic mechanism or pneumatic mechanism can be used. In order to simplify the structure, the utility model adopts an integrated solution, specifically, a lower hydraulic cylinder 12 is provided at the bottom of the lower die seat 1, a piston plate 13 is provided in the lower hydraulic cylinder 12, the lower end of the lower die push rod 11 is fixed on the piston plate 13, a lower hydraulic fixing plate 14 and a lower sealing ring 15 are provided at the bottom opening of the lower hydraulic cylinder 12, and the lower hydraulic fixing plate 14 presses and fixes the lower sealing ring 15 on the lower die seat 1 through the lower screw 16, so that the lower hydraulic cylinder 12 becomes a closed chamber, and a lower hydraulic pipe interface 17 is provided in the middle of the lower hydraulic fixing plate 14. Its working principle is similar to that of an ordinary hydraulic mechanism. By using a hydraulic pump connected to the lower hydraulic pipe interface 17 to pass hydraulic oil into the lower hydraulic cylinder 12, the piston plate 13 can be pushed to move upward, and vice versa, the piston plate 13 can be moved downward by extracting the hydraulic oil, thereby realizing the lifting and lowering of the lower die push rod 11.

[0030] Similar to the lower hydraulic cylinder 12, an upper hydraulic cylinder 22 is provided on the top of the upper die seat 2, and the upper end of the piston rod 21 is located in the upper hydraulic cylinder 22. An upper hydraulic fixing plate 23 and an upper sealing ring 24 are provided at the top opening of the upper hydraulic cylinder 22. The upper hydraulic fixing plate 23 presses and fixes the upper sealing ring 24 on the upper die seat 2 through the upper screw 25, so that the upper hydraulic fixing plate 23 becomes a closed chamber. An upper hydraulic pipe interface 26 is provided in the middle of the upper hydraulic fixing plate 23. By using a hydraulic pump connected to the upper hydraulic pipe interface 26 to pass hydraulic oil into the upper hydraulic cylinder 22, the piston rod 21 can be pushed to move downward, and vice versa, the piston rod 21 can be moved upward by extracting the hydraulic oil, thereby realizing the lifting and lowering of the piston rod 21.

[0031] In order to simplify the structure, only one hydraulic pump is used to realize the lifting and lowering of the lower die push rod 11 and the piston rod 21. The lower hydraulic pipe interface 17 and the upper hydraulic pipe interface 26 can be connected to a three-way valve through a hydraulic pipe respectively, and the three-way valve is connected to a hydraulic pump with controllable pressure through another hydraulic pipe. The hydraulic pump and the three-way valve are controlled according to the set program to make the lower die push rod 11 and the piston rod 21 work alternately to complete the pressing and ejection of the bar material.

Claims

1. The preparation device of TC4 titanium alloy bar is characterized by: The invention comprises a lower die base (1), an upper die base (2) located above the lower die base (1), and a bar forming chamber (3) installed on the lower die base (1); the upper die base (2) is provided with a piston rod (21) which can be extended downward; the bar forming chamber (3) is a barrel-shaped structure which is aligned with the piston rod (21) and has a matching cross section; a lower mold plate (31) which can slide up and down is provided at the bottom of the bar forming chamber (3); a lower die top rod (11) which can be extended upward is provided at the bottom of the lower die base (1); the upper end of the lower die top rod (11) passes through the lower die base (1) and the bottom of the bar forming chamber (3) and is connected to the lower mold plate (31).

2. The device for preparing TC4 titanium alloy bar according to claim 1, characterized in that: Four guide pillars (4) are arranged around the lower die base (1), the upper die base (2) is mounted on the top of the four guide pillars (4), the upper and lower ends of the guide pillars (4) are provided with threaded structures, and the lower die base (1) and the upper die base (2) are fixed to the guide pillars (4) by die base nuts (41).

3. The device for preparing TC4 titanium alloy bar according to claim 2, characterized in that: It also includes a push plate (5), the four sides of the push plate (5) are slidably connected to the four guide pillars (4), the lower end of the piston rod (21) is fixedly connected to the top of the push plate (5), and the bottom of the push plate (5) is provided with an upper mold column (51), and the upper mold column (51) is aligned with the bar forming chamber (3) and the cross section matches.

4. The device for preparing TC4 titanium alloy bar according to claim 3, characterized in that: The piston rod (21) and the upper die column (51) are fixed to the push plate (5) by means of a piston fixing plate (52) and an upper die fixing plate (53) pressed on the end flanges thereof, respectively; the piston fixing plate (52) and the upper die fixing plate (53) are fixed to the push plate (5) by means of a fastening bolt (54) passing through the push plate (5) and a fastening nut (55) matched therewith.

5. The device for preparing TC4 titanium alloy bar according to claim 1, characterized in that: A workbench (6) is provided on the top of the lower die base (1), and the bar forming chamber (3) is installed on the lower die base (1) through the workbench (6). The lower die base (1) is provided with a bolt mounting groove (18) extending along its length direction. The bolt head of the connecting bolt (61) is slidably arranged in the bolt mounting groove (18). The other end of the connecting bolt (61) passes through the strip hole (32) on the bottom flange of the workbench (6) and the bar forming chamber (3) and then cooperates with the clamping nut (62) to clamp and fix the workbench (6) and the bar forming chamber (3) on the lower die base (1). The length direction of the strip hole (32) is perpendicular to the length direction of the bolt mounting groove (18).

6. The device for preparing TC4 titanium alloy bar according to claim 3, characterized in that: The cross section of the bar forming chamber (3) is rectangular, and the lower end of the upper mold column (51) and the top of the lower mold plate (31) are provided with symmetrical semicircular long grooves (56); the lower mold ejector rods (11) include four, and the four lower mold ejector rods (11) are arranged at intervals at the bottom of the lower mold plate (31).

7. The device for preparing TC4 titanium alloy bar according to claim 2, characterized in that: A mechanical arm (7) for clamping the formed bar is provided on the guide column (4) at a position close to the top of the bar forming chamber (3).

8. The device for preparing TC4 titanium alloy bar according to any one of claims 1 to 7, characterized in that: A lower hydraulic cylinder (12) is provided at the bottom of the lower die base (1), a piston plate (13) is provided in the lower hydraulic cylinder (12), the lower end of the lower die push rod (11) is fixed on the piston plate (13), a lower hydraulic fixing plate (14) and a lower sealing ring (15) are provided at the bottom opening of the lower hydraulic cylinder (12), the lower hydraulic fixing plate (14) presses and fixes the lower sealing ring (15) on the lower die base (1) by means of lower screws (16), and a lower hydraulic pipe interface (17) is provided in the middle of the lower hydraulic fixing plate (14).

9. The device for preparing TC4 titanium alloy bar according to claim 8, characterized in that: An upper hydraulic cylinder (22) is provided at the top of the upper die seat (2), the upper end of the piston rod (21) is located in the upper hydraulic cylinder (22), an upper hydraulic fixing plate (23) and an upper sealing ring (24) are provided at the top opening of the upper hydraulic cylinder (22), the upper hydraulic fixing plate (23) presses and fixes the upper sealing ring (24) on the upper die seat (2) via upper screws (25), and an upper hydraulic pipe interface (26) is provided in the middle of the upper hydraulic fixing plate (23).

10. The device for preparing TC4 titanium alloy bar according to claim 9, characterized in that: The lower hydraulic pipe interface (17) and the upper hydraulic pipe interface (26) are respectively connected to a three-way valve via a hydraulic pipe, and the three-way valve is further connected to a pressure-controllable hydraulic pump via another hydraulic pipe.

Images