Detachable alloy bar extrusion forming die

Abstract

The invention relates to the technical field of metal extrusion forming equipment, and discloses a detachable alloy bar extrusion forming die which comprises a die base arranged on the outer side of an extruder. The mold base is connected with two mold supports in a sliding mode through a sliding rail base arranged at the top of the mold base, the two mold supports are symmetrically distributed along the center of the mold base, limiting pieces are arranged in the mold supports, the mold supports are connected with the mold body through the limiting pieces, and adjusting pieces used for driving the limiting pieces to move are arranged on the outer surfaces of the mold supports. The detachable alloy bar extrusion forming die can effectively solve the problems that in the prior art, in the die mounting and dismounting process, a plurality of bolts need to be screwed or loosened one by one, the working procedure is tedious, efficiency is low, and particularly under the production scene that multi-specification products are rapidly switched and dies are frequently replaced, the downtime is greatly prolonged, and the production cost is reduced. And the production efficiency is influenced.

Description

Technical Field

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

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

[0003] In the prior art, the assembly of the die body and the bracket of the extrusion die generally adopts the bolt fastening method, that is, by opening screw holes at the corresponding positions of the die body and the bracket, and using bolts to achieve the rigid connection between the two. However, during the installation and disassembly of the die, it is necessary to tighten or loosen multiple bolts one by one, with cumbersome procedures and low efficiency. Especially in the production scenarios of rapid switching of multiple specifications of products and frequent replacement of dies, it not only significantly prolongs the downtime but also significantly increases the labor cost, and it is difficult to meet the requirements of modern high-efficiency production. Summary of the Invention

[0004] Aiming at the above-mentioned drawbacks of the prior art, the present invention provides a detachable alloy bar extrusion forming die, which can effectively solve the problems in the prior art that during the installation and disassembly of the die, it is necessary to tighten or loosen multiple bolts one by one, with cumbersome procedures and low efficiency. Especially in the production scenarios of rapid switching of multiple specifications of products and frequent replacement of dies, it significantly prolongs the downtime and affects the production efficiency.

[0005] To achieve the above purposes, the present invention is realized through the following technical solutions: The present invention provides a detachable alloy bar extrusion forming die, including: A die seat arranged outside the extruder; The die seat is slidably connected with a die bracket through a slide rail base arranged on its top, and there are two such die brackets which are symmetrically distributed along the center of the die seat. A limiting member is arranged inside the die bracket, and the die bracket is connected with a die body through the limiting member. The central axis of the die body coincides with the central axis of the output end of the extruder. An adjusting member for driving the movement of the limiting member is arranged on the outer surface of the die bracket; Wherein, the adjusting member is used to drive the limiting member to move towards the die body. When the limiting member is in contact with the outer surface of the die body, the die body is limited and fixed inside the die bracket.

[0006] Further, a driving unit is fixedly connected to the top of the mold base, which can be used to drive two mold brackets to move towards each other along the slide rail base. A stop bar is fixedly connected to the top of the mold base, and there are two such stop bars, which are symmetrically distributed along the center of the mold base.

[0007] Further, the limiting member includes guide rods penetrating the outer surface of the mold bracket, and there are multiple groups of such guide rods, which are circumferentially arrayed along the center of the mold bracket. One end of each group of guide rods close to the mold body is fixedly connected with a limiting arc plate that fits the outer surface of the mold body, and the limiting arc plate is connected to the inner wall of the mold bracket through an elastic member arranged on its outer surface.

[0008] Further, a limiting rod is fixedly connected inside the limiting arc plate, and the inside of the limiting rod is designed to be hollow. The limiting rod is slidably connected with limiting balls through slot holes arranged on its outer surface. An active rod is slidably connected inside the limiting rod, and an annular groove that fits the spherical surface of the limiting ball is opened on the outer surface of the active rod. The active rod is connected to the top of the limiting rod through a return spring arranged on its outer surface.

[0009] Further, the adjusting member includes an annular plate rotatably connected inside the mold bracket, and a docking arc plate that fits the end of the guide rod is fixedly connected to the outside of the annular plate. The annular plate is slidably connected with a docking block that fits the outer surface of the limiting rod through a chute opened on its inner side, and the docking block is connected to the inner wall of the chute through an elastic member arranged on its side wall. A driving member for driving the annular plate to rotate is arranged inside the mold bracket.

[0010] Further, the mold body includes a guiding die body and an extrusion die body. Limiting grooves that fit the outer surface of the limiting rod are opened on the outer surfaces of the guiding die body and the extrusion die body, and a tapered mating surface is arranged on the inner wall of the limiting groove.

[0011] Further, a mold core is arranged inside the extrusion die body close to the guiding die body side; The mold core includes a fixed core body, and the outer surface of the fixed core body is detachably installed inside the extrusion die body. The fixed core body is slidably connected with sliding rods through slide holes arranged inside it, and there are two such sliding rods, which are circumferentially arrayed along the center of the fixed core body. The sliding rods are connected to the outside of the fixed core body through compression springs arranged on their outer surfaces, and an active core body is fixedly connected to one end of the sliding rod far from the compression spring.

[0012] Further, the extrusion die body is slidably connected with a connecting plate fixedly connected to the end of the sliding rod through an active slot hole arranged on its outer surface, and one end of the connecting plate far from the sliding rod extends to the outside of the active slot hole.

[0013] The technical solution provided by the present invention has the following beneficial effects compared with the prior art: The present invention is provided with a mold core with a limited member and a separation design. The adjustment member drives the limited member to move radially, replacing the traditional bolts. The driving member rotates the ring plate, and the docking arc plate pushes the guide rod to drive the limited arc plate to fit the outer surface of the mold body. The limit rod is inserted into the limit 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 limit structures is completed in a single step, which greatly improves 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, and 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, especially for the high-hardness alloy waste remaining after extrusion, avoiding the time-consuming and labor-intensive traditional manual cleaning and the risk of tool damage, and improving the convenience of mold use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the main stereoscopic structure of an embodiment of the present invention; Figure 2 It is a schematic diagram of the three-dimensional separation structure of the mold base, the mold support and the mold body according to an embodiment of the present invention; Figure 3 It is a schematic diagram of the three-dimensional separation structure of the mold support according to an embodiment of the present invention; Figure 4 For the embodiment of the present invention Figure 3 A schematic diagram of the structure with a partial enlargement at the center; Figure 5 It is a schematic diagram of the three-dimensional separation structure of the limiting member according to an embodiment of the present invention; Figure 6 It is a schematic diagram of the three-dimensional separation structure of the mold body according to an embodiment of the present invention; Figure 7 It is a schematic diagram of the three-dimensional separation structure of the mold core according to an embodiment of the present invention; Figure 8 It is a schematic cross-sectional structure diagram of an extrusion die body according to an embodiment of the present invention; Figure 9 For the embodiment of the present invention Figure 8 A schematic diagram of the structure with a partial enlargement at B in the middle; Figure 10 It is a schematic diagram of the three-dimensional state transformation structure of the mold core according to an embodiment of the present invention.

[0016] The reference numerals in the figure respectively represent: 1, mold base; 11, shift lever; 2, mold bracket; 3, limiting member; 31, guide rod; 32, limiting arc plate; 33, limiting rod; 331, limiting ball; 34, movable rod; 341, annular groove; 4, mold body; 41, guiding 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 member; 51, annular plate; 52, docking arc plate; 53, docking block; 6, drive unit. Detailed implementation manners

[0017] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] The present invention will be further described below with reference to the embodiments.

[0019] Embodiment:

[0020] Please refer to Figures 1 - 10 , the present invention provides a technical solution: a detachable alloy bar extrusion forming mold, comprising: A mold base 1 disposed outside the extruder; The mold base 1 is slidably connected with a mold bracket 2 through a slide rail base provided on its top, and two such mold brackets 2 are provided and symmetrically distributed along the center of the mold base 1. A limiting member 3 is disposed inside the mold bracket 2. The mold bracket 2 is connected to the mold body 4 through 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. An adjusting member 5 for driving the movement of the limiting member 3 is provided on the outer surface of the mold bracket 2; Wherein, the adjusting member 5 is used to drive the limiting member 3 to move towards 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 limited and fixed inside the mold bracket 2.

[0021] A drive unit 6 for driving the two mold brackets 2 to move towards each other along the slide rail base is fixedly connected to the top of the mold base 1. A shift lever 11 is fixedly connected to the top of the mold base 1, and two such shift levers 11 are provided and symmetrically distributed along the center of the mold base 1.

[0022] The limiting member 3 includes guide rods 31 that penetrate the outer surface of the mold bracket 2, and multiple groups of such guide rods 31 are provided and distributed in a circumferential array along the center of the mold bracket 2. One end of each group of guide rods 31 close to the mold body 4 is fixedly connected 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 provided on its outer surface.

[0023] A limiting rod 33 is fixedly connected inside the limiting arc plate 32, and the inside of the limiting rod 33 is designed to be hollow. The limiting rod 33 is slidably connected with a limiting ball 331 through a slot hole provided on its outer surface. An active rod 34 is slidably connected inside the limiting rod 33, and an annular groove 341 that fits the spherical surface of the limiting ball 331 is formed on the outer surface of the active rod 34. The active rod 34 is connected to the top of the limiting rod 33 through a return spring provided on its outer surface.

[0024] The adjusting member 5 includes an annular plate 51 rotatably connected inside the mold bracket 2, and a docking arc plate 52 that fits the end of the guide rod 31 is fixedly connected to the outside of the annular plate 51. The annular plate 51 is slidably connected with a docking block 53 that fits the outer surface of the limiting rod 33 through a chute formed on its inner side, and the docking block 53 is connected to the inner wall of the chute through an elastic member provided on its side wall. A driving member for driving the annular plate 51 to rotate is provided inside the mold bracket 2.

[0025] The mold body 4 includes a guiding die body 41 and an extrusion die body 42. Limiting grooves 43 that fit the outer surface of the limiting rod 33 are formed on the outer surfaces of the guiding die body 41 and the extrusion die body 42, and a tapered mating surface is provided on the inner wall of the limiting groove 43.

[0026] A die core 44 is provided on one side of the extrusion die body 42 close to the guiding die body 41; The die core 44 includes a fixed core body 441, and the outer surface of the fixed core body 441 is detachably installed inside the extrusion die body 42. The fixed core body 441 is slidably connected with a slide rod 442 through a slide hole formed in its inside, and two such slide rods 442 are provided and distributed in a circumferential array along the center of the fixed core body 441. The slide rod 442 is connected to the outside of the fixed core body 441 through a compression spring provided on its outer surface. One end of the slide rod 442 away from the compression spring is fixedly connected with a movable core body 443.

[0027] The extrusion die body 42 is slidably connected with a connecting plate 445 fixedly connected to the end of the slide rod 442 through a movable slot hole 444 formed on its outer surface, and one end of the connecting plate 445 away from the slide rod 442 extends to the outside of the movable slot hole 444.

[0028] The process of mold disassembly and assembly: The operator controls the drive assembly on the mold base 1. This drive assembly adopts a double-headed screw drive structure. By using the drive parts symmetrically arranged at both ends of the screw, two mold brackets 2 are synchronously driven to move towards or away from each other along the slide rail base. Since the thread pitches at both ends of the double-headed screw are equal but the thread helix directions are opposite, when the drive motor drives the screw to rotate, the two mold brackets 2 achieve equal-speed synchronous movement through the nut seats that cooperate with the screw, ensuring that the guiding die body 41 and the extrusion die body 42 installed on the mold brackets 2 are evenly separated or closed along the central axis of the slide rail base. During this process, the movement trajectory of the mold brackets 2 is restricted by the high-precision guide rails of the slide rail base, forming a linear guiding kinematic pair to ensure the consistency of the mold opening and closing actions.

[0029] When the mold brackets 2 are separated to the predetermined working positions, the drive parts inside the mold brackets 2 are activated, which can drive the ring plate 51 to rotate at a constant speed around the central axis of the mold brackets 2. The drive parts can adopt components such as gear-ring mechanisms, worm gears, etc. Here, a gear-ring mechanism is selected. When the docking arc plate 52 arranged on the outer peripheral surface of the ring plate 51 rotates with the ring plate 51, its curved surface contour 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 generates a radial extrusion force on the guide rod 31, forcing the guide rod 31 to move along its axis direction (pointing to the extrusion die body 42), and then pushing the limiting arc plate 32 fixedly connected to the guide rod 31 to translate synchronously.

[0030] Since the elastic buffer layer arranged on the inner side of the limiting arc plate 32 first contacts the circumferential outer surface of the extrusion die body 42 to form a flexible resistance, the elastic buffer layer can adopt polyimide elastomers, silicone rubbers, fluororubbers, etc. Here, a polyimide elastomer that can withstand high temperatures is selected. When the ring plate 51 continues to rotate, the axial thrust of the guide rod 31 is transmitted to the extrusion die body 42 through the elastic buffer layer, causing the limiting arc plate 32 to generate a small amount of elastic deformation and completely fit the die body surface. At the same time, the limiting rod 33 on the inner side of the limiting arc plate 32 is accurately inserted into the preset limiting groove 43 of the extrusion die body 42 to form a preliminary positioning.

[0031] During the fitting process of the limiting arc plate 32, the movable rod 34 inside the limiting rod 33 is initially held in a pre-lifted position by the return spring. Due to the guiding action of the conical surface of the annular groove 341 on the circumferential outer surface of the movable rod 34, part of the limiting ball 331 protrudes from the slot hole on the circumferential outer surface of the limiting rod 33 to form an initial positioning fit with the conical surface on the inner wall of the limiting groove 43. During this process, when the docking arc plate 52 pushes the guide rod 31 to move, the docking block 53 on the ring plate 51 contacts the side of the movable rod 34, forcing the movable rod 34 to move along the inner chute of the ring plate 51 until the docking block 53 reaches the maximum compression stroke (at this time, the compression amount of the elastic part reaches the design threshold).

[0032] As the ring plate 51 continues to rotate, the docking block 53 squeezes the movable rod 34, forcing it to slide along the axis of the limiting rod 33 towards the limiting arc plate 32. As a result, the limiting ball 331 moves with the movable rod 34 into the "gap" area formed between the annular groove 341 and the inner wall of the limiting rod 33. Furthermore, the height of the ball protruding from the slot hole can be reduced, facilitating the insertion of the limiting rod 33 into the limiting slot 43 on the circumferential outer surface of the extrusion die body 42. When the ring plate 51 continues to rotate, at this time, the guiding rod 31 will pass through the highest point of the arc surface of the docking block 53. Subsequently, the extrusion force on the movable rod 34 gradually decreases. The return spring will push the movable rod 34 to reset, and the limiting ball 331 protrudes from the slot hole again under the action of the conical surface of the annular groove 341, forming an interference fit with the conical surface of the limiting slot 43, achieving the rigid locking of the limiting arc plate 32 and the extrusion die body 42, thus completing the installation of the extrusion die body 42. Similarly, repeating the above operation can complete the limiting and fixing of the guiding die body 41.

[0033] After the installation of the extrusion die body 42, the guiding die body 41 and the die holder 2 is completed, at this time, the driving unit 6 will close the mold between the extrusion die body 42 and the guiding die body 41. And the docking surfaces of the guiding die body 41 and the extrusion die body 42 are provided with positioning rods and positioning holes. During the docking process of the two, the positioning rod will be inserted into the positioning hole, thus ensuring the mold closing accuracy. After the mold closing is completed, the extruder will push the alloy blank into the guiding die body 41. Along with the guiding die cavity in the guiding die body 41, the blank will contact the die core 44 in the extrusion die body 42. As the extruder continues to apply extrusion force, the alloy blank will undergo plastic deformation and pass through the die hole in the die core 44, thereby extruding the alloy blank into a bar that meets the production requirements.

[0034] When the guiding die body 41 and the extrusion die body 42 need to be disassembled, the driving part drives the ring plate 51 to rotate in the reverse direction. Since the docking block 53 will fit against the inner wall of the side of the chute away from the elastic part when rotating in the reverse direction with the ring plate 51, at this time, the docking block 53 will directly contact and squeeze the movable rod 34, realizing the movement of the movable rod 34 along the axis of the limiting rod 33 towards the limiting arc plate 32. At this time, the limiting ball 331 will move back into the "gap", thus losing the limit between the limiting rod 33 and the limiting slot 43. The ring plate 51 continues to rotate in the reverse direction, and the limiting arc plate 32 can be gradually separated from the circumferential outer surfaces of the extrusion die body 42 and the guiding die body 41. When the limiting rod 33 completely disengages from the limiting slot 43, the limiting between the extrusion die body 42, the guiding die body 41 and the die holder 2 is completely released. Compared with the traditional disassembly and assembly process of the extrusion die, by driving the ring plate 51 to rotate with a driving member and relying on the cam follower contact pair formed by the docking arc plate 52 and the guide rod 31, the limiting arc plate 32 can be pushed to move. At the same time, the cooperation between the limiting rod 33 and the limiting groove 43 and subsequent rigid locking ensure the accuracy and firmness of the die body installation. During the disassembly process of the die body, the ring plate 51 is rotated in the reverse direction to conveniently release the limit, with simple and efficient operation, improving the convenience and efficiency of the die body disassembly.

[0035] Scrap separation process: When the external cutting device cuts off the extruded bar from the end of the extrusion die body 42, due to the radial constraint and frictional resistance of the inner die core 44 in the extrusion die body 42 on the blank, the material flow velocity near the inner wall of the die core 44 is significantly lower than that in the central region. The shear stress received by the material in this region exceeds the critical shear stress value of the material, thus forming dead zone material that remains stationary. Such dead zone material cannot flow out with the main stream material after the extrusion process ends and remains inside the die core 44 as scrap. The driving unit 6 on the die seat 1 can drive the extrusion die body 42 and the guiding die body 41 to move along the sliding rail base. During this movement process, when the extrusion die body 42 moves smoothly along the sliding rail, the stop rod 11 will come into contact with the connecting plate 445 in the movable slot hole 444 on the outer surface of the extrusion die body 42. As the extrusion die body 42 continues to move, the relative movement between the stop rod 11 and the connecting plate 445 causes the connecting plate 445 to move along the movable slot hole 444. Since the connecting plate 445 is fixedly connected to the end of the sliding rod 442 and both the connecting plate 445 and the stop rod 11 are made of high-strength materials, contact between the two is avoided to prevent the connecting plate 445 or the stop rod 11 from breaking and affecting the normal separation of the scrap. The movement of the connecting plate 445 will drive the sliding rod 442 to move synchronously. During the movement of the sliding rod 442, a thrust will be applied to the movable core body 443, thereby pushing the movable core body 443 to gradually separate from the fixed core body 441.

[0036] When the movable core body 443 and the fixed core body 441 generate relative displacement, the dead zone scrap originally restricted by the die core 44 loses its restraint. At this time, under the action of gravity, these scraps will automatically fall off and be discharged, simplifying the cleaning steps of the die and effectively improving the convenience of die use and production efficiency.

[0037] The present invention adopts the limiting member 3 and the die core 44 with a separated design, which has the following advantages: 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 bolts. 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 in the whole 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.

[0038] 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, with opposite threads at both ends and equal pitches, driving the two mold brackets 2 to move synchronously toward or away from each other along the slide rail base. When the screw rotates, the nut seat drives the mold bracket 2 to move at a constant speed, and cooperates with the high-precision guide rail constraint trajectory of the slide rail 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 closing the mold, the docking surface of the guide mold body 41 and the extrusion mold body 42 is accurately matched through 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 rod.

[0039] Advantage three: flexible positioning and rigid locking are combined to ensure installation stability. The outer surface of the limiting arc plate 32 is provided with an elastic member. When it initially contacts the mold body 4, a flexible resistance is first formed to absorb the position deviation and impact load during the installation process. Then the limiting rod 33 is inserted into the limiting groove 43, and the limiting ball 331 inside it forms an interference contact with the conical mating surface of the inner wall of the limiting groove 43 (the movable rod 34 pushes the limiting ball 331 to protrude from the slot through the reset spring), achieving rigid locking. It avoids mold damage caused by rigid collision, and enhances the shear resistance through multi-point contact between the ball and the conical surface, ensuring that the mold body 4 does not move during high-pressure extrusion.

[0040] Advantage four, the mold body 4 is divided into a guide mold body 41 and an extrusion mold body 42, the two 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.

[0041] Advantage Five: The waste is automatically discharged, simplifying the cleaning process. When the mold is separated, the shift lever 11 contacts the connecting plate 445 of the extrusion die body 42, pushing the slide bar 442 to drive the movable core 443 to separate from the fixed core 441, releasing the constraint on the waste in the dead zone of the die core 44. The waste in the dead zone automatically falls due to gravity, eliminating the need for manual disassembly of the die core 44 to remove residues. Especially for the high-hardness alloy waste remaining after extrusion, it avoids the time-consuming and laborious manual cleaning and the risk of tool damage in the traditional method, enhancing the convenience of using the mold.

[0042] Advantage Six: Automated drive reduces the intensity of manual operation. The adjusting part 5, the driving part, and the driving unit 6 all adopt automated control, and there is no need for manual tightening of bolts or handling heavy molds during the disassembly and assembly process. The moving parts such as the guide rod 31 and the movable rod 34 in the limiting part 3 are automatically positioned and locked by the driving part, reducing the risk of manual fatigue and operation errors, and having relatively low potential safety hazards.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. However, such 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 mold, characterized in that, Including: A die holder (1) arranged outside the extruder; The die holder (1) is slidably connected with a die bracket (2) through a slide rail base arranged on its top, and two such die brackets (2) are provided and symmetrically distributed along the center of the die holder (1). A limiting member (3) is arranged inside the die bracket (2), and the die bracket (2) is connected with a die body (4) through the limiting member (3). The central axis of the die body (4) coincides with the central axis of the output end of the extruder. An adjusting member (5) for driving the movement of the limiting member (3) is arranged on the outer surface of the die bracket (2); Wherein, the adjusting member (5) is used to drive the limiting member (3) to move towards the die body (4). When the limiting member (3) is in contact with the outer surface of the die body (4), the die body (4) is limited and fixed inside the die bracket (2).

2. The detachable alloy bar extrusion forming die according to claim 1, characterized in that: A driving unit (6) for driving the two die brackets (2) to move towards each other along the slide rail base is fixedly connected to the top of the die holder (1). Two stop rods (11) are fixedly connected to the top of the die holder (1) and symmetrically distributed along the center of the die holder (1).

3. A detachable alloy bar extrusion mold according to claim 1, characterized in that: The limiting member (3) includes guide rods (31) penetrating through the outer surface of the die bracket (2), and multiple groups of such guide rods (31) are provided and circumferentially arrayed along the center of the die bracket (2). One end of each group of guide rods (31) close to the die body (4) is fixedly connected with a limiting arc plate (32) in contact with the outer surface of the die body (4), and the limiting arc plate (32) is connected with the inner wall of the die bracket (2) through an elastic member arranged on its outer surface.

4. A detachable alloy bar extrusion forming die according to claim 3, characterized in that: A limiting rod (33) is fixedly connected inside the limiting arc plate (32), and the inside of the limiting rod (33) is designed to be hollow. The limiting rod (33) is slidably connected with a limiting ball (331) through a slot arranged on its outer surface. An active rod (34) is slidably connected inside the limiting rod (33), and an annular groove (341) in contact with the spherical surface of the limiting ball (331) is arranged on the outer surface of the active rod (34). The active rod (34) is connected with the top of the limiting rod (33) through a return spring arranged on its outer surface.

5. A detachable alloy bar extrusion mold according to claim 1, characterized in that: The adjusting member (5) includes an annular plate (51) rotatably connected inside the die bracket (2), and a docking arc plate (52) in contact with the end of the guide rod (31) is fixedly connected to the outside of the annular plate (51). A docking block (53) in contact with the outer surface of the limiting rod (33) is slidably connected to the annular plate (51) through a chute arranged on its inner side, and the docking block (53) is connected with the inner wall of the chute through an elastic member arranged on its side wall. A driving member for driving the rotation of the annular plate (51) is arranged inside the die bracket (2).

6. A detachable alloy bar extrusion mold according to claim 1, characterized in that: The die body (4) includes a guiding die body (41) and an extrusion die body (42). Limiting grooves (43) in contact with the outer surface of the limiting rod (33) are arranged on the outer surfaces of the guiding die body (41) and the extrusion die body (42), and a tapered mating surface is arranged on the inner wall of the limiting groove (43).

7. A detachable alloy bar extrusion forming die according to claim 6, characterized in that: A die core (44) is provided on one side of the extrusion die body (42) close to the guiding die body (41). The die core (44) includes a fixed core body (441), and the outer surface of the fixed core body (441) is detachably installed in the extrusion die body (42). A slide bar (442) is slidably connected to the fixed core body (441) through a slide hole provided in the fixed core body (441). There are two such slide bars (442) and they are circumferentially arrayed along the center of the fixed core body (441). The slide bar (442) is connected to the outside of the fixed core body (441) through a compression spring provided on its outer surface. One end of the slide bar (442) away from the compression spring is fixedly connected to a movable core body (443).

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

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