A detachable alloy bar extrusion forming die

Abstract

The present invention relates to the technical field of metal extrusion molding equipment, and discloses a detachable alloy bar extrusion molding die, comprising a die base arranged on the outside of an extruder; the die base is slidably connected to a die bracket via a slide rail base arranged on the top thereof, and the die bracket is provided with two and symmetrically distributed along the center of the die base, a limit member is provided in the die bracket, the die bracket is connected to the die body via the limit member, and an adjustment member that can be used to drive the limit member to move is provided on the outer surface of the die bracket. The detachable alloy bar extrusion molding die can effectively solve the problem in the prior art that during the installation and disassembly of the die, multiple bolts need to be tightened or loosened one by one, the process is cumbersome and inefficient, especially in the production scenario of rapid switching of multiple specifications of products and frequent replacement of dies, which greatly extends the downtime and affects production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of metal extrusion forming equipment, and in particular to a detachable alloy bar extrusion forming die. Background Art

[0002] In the processing of alloy bars, in order to meet the high-precision processing requirements of complex cross-sectional shapes such as round, square, and special shapes, the alloy billet is usually placed in an extrusion die. Through the preset forming die hole structure inside the die, the billet undergoes plastic flow under the action of the high-pressure extrusion pressure of the extruder, and the alloy billet can be directly processed into a bar product with a target cross-sectional profile.

[0003] In existing technology, the die body and bracket of an extrusion die are commonly assembled using bolt fastening. This involves creating screw holes in corresponding locations on the die body and bracket, and then using bolts to achieve a rigid connection between the two. However, during the installation and removal of the die, multiple bolts must be tightened or loosened one by one, creating a cumbersome and inefficient process. This is particularly true in production scenarios involving rapid switching between multiple product specifications and frequent die changes. This not only significantly increases downtime but also significantly increases labor costs, making it difficult to adapt to the demands of modern, efficient production. Summary of the Invention

[0004] In response to the above-mentioned shortcomings of the prior art, the present invention provides a detachable alloy bar extrusion forming die, which can effectively solve the problem in the prior art that during the installation and disassembly of the die, multiple bolts need to be tightened or loosened one by one, the process is cumbersome and inefficient, especially in the production scenarios of rapid switching of multiple specifications of products and frequent replacement of molds, which greatly extends the downtime and affects production efficiency.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a detachable alloy bar extrusion forming die, comprising:

[0007] A die holder disposed outside the extruder;

[0008] The mold base is slidably connected to a mold bracket via a slide rail base provided on the top thereof, and the mold bracket is provided with two and symmetrically distributed along the center of the mold base. A limit member is provided in the mold bracket, and the mold bracket is connected to the mold body via the limit member, and the central axis of the mold body coincides with the central axis of the output end of the extruder. An adjustment member is provided on the outer surface of the mold bracket that can be used to drive the limit member to move;

[0009] The adjusting member is used to drive the limiting member to move toward the mold body. When the limiting member is in contact with the outer surface of the mold body, the mold body is fixed in the mold support.

[0010] Furthermore, a driving unit that can be used to drive the two mold brackets to move toward each other along the slide rail base is fixedly connected to the top of the mold base. A shift rod is fixedly connected to the top of the mold base, and two shift rods are provided and symmetrically distributed along the center of the mold base.

[0011] Furthermore, the limiting part includes a guide rod that passes through the outer surface of the mold bracket, and the guide rods are provided in multiple groups and distributed in a circular array along the center of the mold bracket. Each group of the guide rods is fixedly connected to a limiting arc plate that fits the outer surface of the mold body at one end close to the mold body, and the limiting arc plate is connected to the inner wall of the mold bracket through an elastic part arranged on its outer surface.

[0012] Furthermore, the limiting arc plate is fixedly connected to the limiting rod, and the interior of the limiting rod is hollow. The limiting rod is slidingly connected to the limiting ball through a slot hole set on its outer surface. A movable rod is slidingly connected to the interior of the limiting rod, and the outer surface of the movable rod is provided with an annular groove that fits the spherical surface of the limiting ball. The movable rod is connected to the top of the limiting rod through a reset spring set on its outer surface.

[0013] Furthermore, the adjusting part includes a ring plate rotatably connected to the mold bracket, and the outer side of the ring plate is fixedly connected to a docking arc plate that fits with the end of the guide rod. The ring plate is slidably connected to a docking block that fits with the outer surface of the limit rod through a sliding groove opened on its inner side, and the docking block is connected to the inner wall of the sliding groove through an elastic part arranged on its side wall. A driving part that can be used to drive the ring plate to rotate is provided inside the mold bracket.

[0014] Furthermore, the mold body includes a guide mold body and an extrusion mold body, and the outer surfaces of the guide mold body and the extrusion mold body are both provided with a limiting groove that fits with the outer surface of the limiting rod, and the inner wall of the limiting groove is provided with a tapered matching surface.

[0015] Furthermore, a mold core is provided in the extrusion mold body on one side close to the guide mold body;

[0016] The mold core includes a fixed core body, and the outer surface of the fixed core body can be detachably installed in the extrusion mold body. The fixed core body is slidably connected to a sliding rod through a sliding hole arranged inside it, and two sliding rods are provided and distributed in a circular array along the center of the fixed core body. The sliding rod is connected to the outer side of the fixed core body through a compression spring arranged on its outer surface, and the sliding rod is fixedly connected to the movable core body at one end away from the compression spring.

[0017] Furthermore, the extrusion die body is slidably connected to a connecting plate fixedly connected to the end of the slide rod through a movable slot hole provided on its outer surface, and the connecting plate extends away from one end of the slide rod to the outside of the movable slot hole.

[0018] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] The present invention provides a mold core with a limiter and a separation design. The adjustment member drives the limiter to move radially, replacing the traditional bolt. The driving member rotates the ring plate, and the docking arc plate pushes the guide rod to drive the limiter arc plate to fit the outer surface of the mold body. The limiter rod is inserted into the limiter groove to achieve rapid positioning. The limit can be released by rotating the ring plate in the opposite direction. There is no need to remove multiple bolts, which simplifies the disassembly and assembly steps. No other tools are required for the entire process. The linkage of multiple groups of limiter structures is completed in a single step, greatly improving the disassembly and assembly efficiency of the mold body. When the mold is separated, the gear rod contacts the connecting plate of the extrusion mold body, pushing the slide rod to drive the movable core body to separate from the fixed core body, thereby releasing the constraint on the dead zone waste in the mold core. The dead zone waste automatically falls due to gravity, and there is no need to manually disassemble the mold core to remove the residue. This is especially true for high-hardness alloy waste remaining after extrusion, avoiding the time-consuming and labor-intensive traditional manual cleaning and the risk of tool damage, thereby improving the convenience of mold use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0021] Figure 1 This is a schematic diagram of the main three-dimensional structure of an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the three-dimensional separation structure of the mold base, mold bracket and mold body according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the three-dimensional separation structure of the mold support according to an embodiment of the present invention;

[0024] Figure 4 For the embodiment of the present invention Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0025] Figure 5 Schematic diagram of the three-dimensional separation structure of the limiting member according to an embodiment of the present invention;

[0026] Figure 6 Schematic diagram of the three-dimensional separation structure of the mold body according to an embodiment of the present invention;

[0027] Figure 7 Schematic diagram of the three-dimensional separation structure of the mold core according to an embodiment of the present invention;

[0028] Figure 8Schematic diagram of the cross-sectional structure of the extrusion die body according to an embodiment of the present invention;

[0029] Figure 9 For the embodiment of the present invention Figure 8 A schematic diagram of the structure with a partial enlargement at point B in the middle;

[0030] Figure 10 Schematic diagram of the three-dimensional state transformation structure of the mold core according to an embodiment of the present invention.

[0031] The numbers in the figure represent: 1. Mold base; 11. Gear rod; 2. Mold bracket; 3. Limiting part; 31. Guide rod; 32. Limiting arc plate; 33. Limiting rod; 331. Limiting ball; 34. Movable rod; 341. Ring groove; 4. Mold body; 41. Guide mold body; 42. Extrusion mold body; 43. Limiting groove; 44. Mold core; 441. Fixed core body; 442. Sliding rod; 443. Movable core body; 444. Movable slot hole; 445. Connecting plate; 5. Adjusting part; 51. Ring plate; 52. Docking arc plate; 53. Docking block; 6. Driving unit. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] The present invention will be further described below with reference to the embodiments.

[0034] Example:

[0035] See also Figures 1-10 The present invention provides a technical solution: a detachable alloy bar extrusion die, comprising:

[0036] A die base 1 is arranged outside the extruder;

[0037] The mold base 1 is slidably connected to the mold bracket 2 via a slide rail base provided on the top thereof. The mold bracket 2 is provided with two mold brackets 2 and is symmetrically distributed along the center of the mold base 1. A limit member 3 is provided inside the mold bracket 2. The mold bracket 2 is connected to the mold body 4 through the limit member 3. The central axis of the mold body 4 coincides with the central axis of the output end of the extruder. An adjustment member 5 is provided on the outer surface of the mold bracket 2 for driving the limit member 3 to move.

[0038] The adjusting member 5 is used to drive the limiting member 3 to move toward the mold body 4 . When the limiting member 3 fits the outer surface of the mold body 4 , the mold body 4 is fixed in the mold support 2 .

[0039] A driving unit 6 is fixedly connected to the top of the mold base 1 and can be used to drive the two mold brackets 2 to move toward each other along the slide rail base. A shift rod 11 is fixedly connected to the top of the mold base 1, and two shift rods 11 are provided and symmetrically distributed along the center of the mold base 1.

[0040] The limiting member 3 includes a guide rod 31 that passes through the outer surface of the mold bracket 2, and the guide rod 31 is provided with multiple groups and distributed in a circular array along the center of the mold bracket 2. Each group of guide rods 31 is fixedly connected to one end close to the mold body 4 with a limiting arc plate 32 that fits the outer surface of the mold body 4, and the limiting arc plate 32 is connected to the inner wall of the mold bracket 2 through an elastic member arranged on its outer surface.

[0041] The limiting arc plate 32 is fixedly connected to the limiting rod 33 inside, and the limiting rod 33 is hollow inside. The limiting rod 33 is slidingly connected to the limiting ball 331 through a slot hole set on its outer surface. The limiting rod 33 is slidingly connected to the movable rod 34 inside, and the outer surface of the movable rod 34 is provided with an annular groove 341 that fits the spherical surface of the limiting ball 331. The movable rod 34 is connected to the top of the limiting rod 33 through a reset spring set on its outer surface.

[0042] The adjusting member 5 includes a ring plate 51 rotatably connected to the mold bracket 2, and a docking arc plate 52 is fixedly connected to the outside of the ring plate 51 and fits with the end of the guide rod 31. The ring plate 51 is slidably connected to a docking block 53 that fits with the outer surface of the limit rod 33 through a slide groove opened on its inner side, and the docking block 53 is connected to the inner wall of the slide groove through an elastic member arranged on its side wall. A driving member that can be used to drive the ring plate 51 to rotate is provided inside the mold bracket 2.

[0043] The mold body 4 includes a guide mold body 41 and an extrusion mold body 42. The outer surfaces of the guide mold body 41 and the extrusion mold body 42 are both provided with a limiting groove 43 that fits with the outer surface of the limiting rod 33, and the inner wall of the limiting groove 43 is provided with a tapered matching surface.

[0044] A mold core 44 is provided in the extrusion mold body 42 on one side close to the guide mold body 41;

[0045] The mold core 44 includes a fixed core body 441, and the outer surface of the fixed core body 441 can be detachably installed in the extrusion mold body 42. The fixed core body 441 is slidably connected to a slide rod 442 through a sliding hole arranged inside it, and the slide rod 442 is provided with two and distributed in a circular array along the center of the fixed core body 441. The slide rod 442 is connected to the outer side of the fixed core body 441 through a compression spring arranged on its outer surface, and the slide rod 442 is fixedly connected to the movable core body 443 at one end away from the compression spring.

[0046] The extrusion die body 42 is slidably connected to a connecting plate 445 fixedly connected to the end of the slide rod 442 through a movable slot hole 444 set on its outer surface, and the connecting plate 445 extends away from one end of the slide rod 442 to the outside of the movable slot hole 444.

[0047] Mold disassembly and assembly process:

[0048] The operator controls the drive assembly on the mold base 1, which adopts a double-headed screw transmission structure. The drive unit is symmetrically arranged at both ends of the screw to synchronously drive the two mold supports 2 to move toward or away from each other along the slide base. Because the threads at both ends of the double-headed screw rotate in opposite directions and have equal pitches, when the drive motor drives the screw to rotate, the two mold supports 2 achieve constant and synchronous movement through the nut seat that cooperates with the screw, ensuring that the guide mold body 41 and the extrusion mold body 42 installed on the mold support 2 are evenly separated or closed along the central axis of the slide base. During this process, the movement trajectory of the mold support 2 is constrained by the high-precision guide rails of the slide base, forming a linear guide motion pair to ensure the consistency of the mold opening and closing movements.

[0049] After the mold support 2 is separated to the predetermined position, the drive element within the mold support 2 is activated, driving the ring plate 51 to rotate at a constant speed about the central axis of the mold support 2. The drive element can be a gear ring mechanism, a worm gear, or other components, with a gear ring mechanism being used here. The docking arc plate 52, mounted on the outer circumference of the ring plate 51, rotates with the ring plate 51. Its curved surface forms a cam-follower contact pair with the end of the guide rod 31 (the end of the guide rod 31 has been chamfered). As the rotation angle of the ring plate 51 increases, the docking arc plate 52 exerts a radial compressive force on the guide rod 31, forcing the guide rod 31 to move along its axis (toward the extrusion die body 42), thereby driving the synchronous translation of the limit arc plate 32, which is fixed to the guide rod 31.

[0050] Because the elastic buffer layer provided on the inner side of the limiting arc plate 32 first contacts the circumferential outer surface of the extrusion die 42, forming a flexible resistance, the elastic buffer layer can be made of polyimide elastomer, silicone rubber, fluororubber, etc., and polyimide elastomer with high temperature resistance is selected here. When the ring plate 51 continues to rotate, the axial thrust of the guide rod 31 is transmitted to the extrusion die 42 through the elastic buffer layer, causing the limiting arc plate 32 to undergo a slight elastic deformation and fully conform to the die surface. At the same time, the limiting rod 33 on the inner side of the limiting arc plate 32 is precisely inserted into the preset limiting groove 43 of the extrusion die 42, forming a preliminary positioning.

[0051] During the engagement of the limiting arc plate 32, the movable rod 34 within the limiting rod 33 is initially maintained in a pre-elevated position by a return spring. Guided by the tapered surface of the annular groove 341 on the outer circumference of the movable rod 34, the limiting ball 331 partially protrudes from the slot on the outer circumference of the limiting rod 33, forming an initial positioning fit with the tapered surface of the inner wall of the limiting groove 43. During this process, as the docking arc plate 52 pushes the guide rod 31 to move, the docking block 53 on the annular plate 51 contacts the side of the movable rod 34, forcing the movable rod 34 to move along the inner groove of the annular plate 51 until the docking block 53 reaches its maximum compression stroke (at which point the elastic member's compression reaches the designed threshold).

[0052] As the ring plate 51 continues to rotate, the docking block 53 compresses the movable rod 34, forcing it to slide along the axis of the limiting rod 33 toward the limiting arc plate 32. Consequently, the limiting ball 331 moves with the movable rod 34 into the "gap" formed by the annular groove 341 and the inner wall of the limiting rod 33. This reduces the height of the ball protruding from the slot, facilitating insertion of the limiting rod 33 into the limiting groove 43 on the outer circumferential surface of the extrusion die 42. As the ring plate 51 continues to rotate, the guide rod 31 passes the highest point of the arc surface of the docking block 53. The movable rod 34 is then squeezed downward by the docking block 53, and the return spring pushes the movable rod 34 back into its original position. The limiting ball 331, acting under the action of the conical surface of the annular groove 341, re-protrudes from the slot, forming an interference fit with the conical surface of the limiting groove 43, thus rigidly locking the limiting arc plate 32 and the extrusion die 42, thereby completing the installation of the extrusion die 42. Similarly, repeating the above operation completes the positional fixation of the guide die 41.

[0053] After the extrusion die 42, the guide die 41 and the die support 2 are installed, the drive unit 6 will close the die 42 and the guide die 41, and the guide die 41 and the extrusion die 42 are provided with positioning rods and positioning holes on the docking surface. During the docking process, the positioning rods will be inserted into the positioning holes, thereby ensuring the accuracy of the closing die. After the closing die is completed, the extruder will push the alloy billet into the guide die 41. Along with the guide die cavity in the guide die 41, the billet will contact the die core 44 in the extrusion die 42. As the extruder continues to apply extrusion force, the alloy billet will undergo plastic deformation and pass through the die hole in the die core 44, thereby being extruded into a bar that meets production requirements.

[0054] When the guide die 41 and the extrusion die 42 need to be disassembled, the driving member drives the ring plate 51 to rotate in the opposite direction. As the docking block 53 rotates in the opposite direction with the ring plate 51, it will come into contact with the inner wall of the slide groove away from the elastic member. At this time, the docking block 53 will directly contact and squeeze the movable rod 34, causing the movable rod 34 to move along the axis of the limiting rod 33 toward the limiting arc plate 32. At this time, the limiting ball 331 will move back into the "gap", thereby releasing the limit between the limiting rod 33 and the limiting groove 43. The ring plate 51 continues to rotate in the opposite direction, so that the limiting arc plate 32 can gradually separate from the circumferential outer surface of the extrusion die 42 and the guide die 41. When the limiting rod 33 is completely separated from the limiting groove 43, the limit between the extrusion die 42, the guide die 41 and the die support 2 is completely released.

[0055] Compared to the traditional assembly and disassembly process of an extrusion die, the ring plate 51 is rotated by a driver, and the cam-follower contact pair formed by the docking arc plate 52 and the guide rod 31 can push the limit arc plate 32 to move. At the same time, the cooperation between the limit rod 33 and the limit groove 43, and the subsequent rigid locking, ensure the accuracy and firmness of the die installation. During the die disassembly process, the limit can be easily released by driving the ring plate 51 in the opposite direction. This simple and efficient operation improves the convenience and efficiency of die disassembly.

[0056] Waste separation process:

[0057] After the extruded rod is severed from the end of the extrusion die 42 by an external cutting device, the material near the inner wall of the die 44, due to radial constraints and frictional resistance, flows much slower than the material in the central area. The shear stress in this area exceeds the critical shear stress, resulting in a stationary dead zone. This dead zone remains inside the die 44, unable to flow out with the main stream of material after the extrusion process.

[0058] The driving unit 6 on the die base 1 can drive the extrusion die 42 and the guide die 41 to separate along the slide rail base. During this movement, when the extrusion die 42 moves smoothly along the slide rail, the shift rod 11 will come into contact with the connecting plate 445 in the movable slot 444 on the outer surface of the extrusion die 42. As the extrusion die 42 continues to move, the relative movement between the shift rod 11 and the connecting plate 445 prompts the connecting plate 445 to move along the movable slot 444. Since the connecting plate 445 is fixedly connected to the end of the slide bar 442, the connecting plate 445 and the shift rod 11 are made of high-strength material to avoid contact between the two, which may cause the connecting plate 445 or the shift rod 11 to break, affecting the normal separation of the waste. The movement of the connecting plate 445 will drive the slide bar 442 to move synchronously. During the movement of the slide bar 442, it will apply a thrust to the movable core 443, thereby pushing the movable core 443 to gradually separate from the fixed core 441.

[0059] When the movable core 443 and the fixed core 441 produce relative displacement, the dead zone waste originally constrained by the mold core 44 loses its restriction. At this time, under the action of gravity, these wastes will automatically fall and be discharged, which simplifies the cleaning steps of the mold and effectively improves the mold's ease of use and production efficiency.

[0060] The present invention adopts the limiter 3 and the mold core 44 with a separate design, which has the following advantages:

[0061] Advantage 1: Quick disassembly and assembly, greatly improving efficiency. The limit member 3 is driven to move radially by the adjusting member 5 to replace the traditional bolt. The driving member rotates the ring plate 51, and the docking arc plate 52 pushes the guide rod 31 to drive the limit arc plate 32 to fit the outer surface of the mold body 4. The limit rod 33 is inserted into the limit groove 43 to achieve rapid positioning. The limit can be released by rotating the ring plate 51 in the opposite direction. There is no need to remove multiple bolts, which simplifies the disassembly and assembly steps. No other tools are required for the entire process. The linkage of multiple sets of limit structures is completed in a single step, which greatly improves the disassembly and assembly efficiency of the mold body 4.

[0062] Advantage 2: Synchronous drive ensures the consistency of mold opening and closing. The drive unit 6 on the top of the mold base 1 adopts a double-headed screw transmission structure. The threads at both ends rotate in opposite directions and have equal pitches, driving the two mold supports 2 to move synchronously toward or away from each other along the slide base. When the screw rotates, the nut seat drives the mold support 2 to move at a constant speed, and cooperates with the high-precision guide rail constraint trajectory of the slide base to ensure that the guide mold body 41 and the extrusion mold body 42 are evenly separated or closed along the central axis, so that the central axis of the mold body 4 is strictly aligned with the output end of the extruder. When the mold is closed, the docking surface of the guide mold body 41 and the extrusion mold body 42 is precisely matched with the positioning rod and the positioning hole, avoiding the deviation caused by traditional manual centering, ensuring that the mold is evenly stressed during the extrusion process, and improving the forming accuracy of the bar.

[0063] Advantage three: The combination of flexible positioning and rigid locking ensures installation stability. The outer surface of the limiting arc plate 32 is provided with an elastic member. Upon initial contact with the mold body 4, a flexible resistance is formed, absorbing positional deviations and impact loads during installation. The limiting rod 33 is then inserted into the limiting groove 43. The limiting ball 331 within it forms interference contact with the tapered mating surface on the inner wall of the limiting groove 43 (the movable rod 34, via a return spring, pushes the limiting ball 331 out of the slot), achieving rigid locking. This avoids mold damage caused by rigid collisions, and the multi-point contact between the ball and the tapered surface enhances shear resistance, ensuring that the mold body 4 does not shift during high-pressure extrusion.

[0064] Advantage four: the mold body 4 is divided into a guide mold body 41 and an extrusion mold body 42, which are connected to the limit part 3 of the mold bracket 2 through a limit groove 43, and the mold core 44 is designed to be separated. When it is necessary to produce rods with different cross-sections, it is only necessary to replace the corresponding guide mold body 41, extrusion mold body 42 and mold core 44, without disassembling the entire mold bracket 2 or adjusting the basic structure, which greatly shortens the switching time of molds of multiple specifications.

[0065] Advantage five: automatic waste discharge simplifies the cleaning process. When the mold is separated, the lever 11 contacts the connecting plate 445 of the extrusion mold body 42, pushing the slide bar 442 to separate the movable core 443 from the fixed core 441, releasing the constraint on the waste in the dead zone within the mold core 44. The waste in the dead zone automatically falls due to gravity, eliminating the need to manually disassemble the mold core 44 to remove the residue. This is especially effective for high-hardness alloy waste left after extrusion, avoiding the time-consuming and labor-intensive traditional manual cleaning process and the risk of tool damage, thereby improving mold convenience.

[0066] Advantage 6: Automated drive reduces manual operation. The adjustment member 5, drive member, and drive unit 6 are all automatically controlled, eliminating the need for manual tightening of bolts or handling of heavy molds during assembly and disassembly. Moving parts within the limiter 3, such as the guide rod 31 and movable rod 34, are automatically positioned and locked by the drive, reducing manual fatigue and the risk of operator error, and minimizing safety hazards.

[0067] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A detachable alloy bar extrusion die, characterized in that: include: A die base (1) is arranged outside the extruder; The mold base (1) is slidably connected to a mold bracket (2) via a slide rail base arranged on the top thereof, and the mold bracket (2) is provided with two and symmetrically distributed along the center of the mold base (1), a limiting member (3) is provided in the mold bracket (2), the mold bracket (2) is connected to the mold body (4) via the limiting member (3), and the central axis of the mold body (4) coincides with the central axis of the output end of the extruder, and an adjusting member (5) is provided on the outer surface of the mold bracket (2) for driving the limiting member (3) to move; The adjusting member (5) is used to drive the limiting member (3) to move toward the mold body (4); when the limiting member (3) is in contact with the outer surface of the mold body (4), the mold body (4) is fixed in a limited position within the mold support (2); The limiting member (3) includes a guide rod (31) that passes through the outer surface of the mold support (2), and the guide rod (31) is provided with multiple groups and is distributed in a circular array along the center of the mold support (2). Each group of the guide rods (31) is fixedly connected to a limiting arc plate (32) that fits the outer surface of the mold main body (4) at one end close to the mold main body (4), and the limiting arc plate (32) is connected to the inner wall of the mold support (2) through an elastic member provided on its outer surface. The limiting rod (33) is fixedly connected to the limiting rod (33), and the limiting rod (33) is hollow inside. The limiting rod (33) is slidably connected to the limiting ball (331) through a slot hole arranged on its outer surface. The limiting rod (33) is slidably connected to a movable rod (34) inside. The outer surface of the movable rod (34) is provided with an annular groove (341) that fits the spherical surface of the limiting ball (331). The movable rod (34) is connected to the top of the limiting rod (33) through a return spring arranged on its outer surface.

2. The detachable alloy bar extrusion die according to claim 1, characterized in that: A driving unit (6) is fixedly connected to the top of the mold base (1) and can be used to drive two mold brackets (2) to move toward each other along the slide rail base. A shift rod (11) is fixedly connected to the top of the mold base (1), and two shift rods (11) are provided and symmetrically distributed along the center of the mold base (1).

3. The detachable alloy bar extrusion die according to claim 1, characterized in that: The adjusting member (5) includes a ring plate (51) rotatably connected to the mold bracket (2), and a docking arc plate (52) that fits the end of the guide rod (31) is fixedly connected to the outer side of the ring plate (51), and the ring plate (51) is slidably connected to a docking block (53) that fits the outer surface of the limit rod (33) through a sliding groove provided on the inner side thereof, and the docking block (53) is connected to the inner wall of the sliding groove through an elastic member provided on the side wall thereof. A driving member that can be used to drive the ring plate (51) to rotate is provided inside the mold bracket (2).

4. The detachable alloy bar extrusion die according to claim 1, characterized in that: The mold body (4) comprises a guide mold body (41) and an extrusion mold body (42); the outer surfaces of the guide mold body (41) and the extrusion mold body (42) are both provided with a limiting groove (43) that fits with the outer surface of the limiting rod (33); and the inner wall of the limiting groove (43) is provided with a tapered matching surface.

5. The detachable alloy bar extrusion die according to claim 4, characterized in that: A mold core (44) is provided in the extrusion mold body (42) on one side close to the guide mold body (41); The mold core (44) includes a fixed core (441), and the outer surface of the fixed core (441) can be detachably installed in the extrusion mold (42). The fixed core (441) is slidably connected to a slide rod (442) through a slide hole arranged inside the fixed core (441), and the slide rods (442) are provided with two and are distributed in a circular array along the center of the fixed core (441). The slide rods (442) are connected to the outer side of the fixed core (441) through a compression spring arranged on the outer surface of the slide rods (442), and the slide rods (442) are fixedly connected to a movable core (443) at one end away from the compression spring.

6. The detachable alloy bar extrusion die according to claim 4, characterized in that: The extrusion die (42) is slidably connected to a connecting plate (445) fixedly connected to the end of the slide rod (442) through a movable slot hole (444) provided on its outer surface, and the connecting plate (445) extends away from one end of the slide rod (442) to the outside of the movable slot hole (444).

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