A die forging machine air blowing device

Abstract

This invention relates to the field of jet cleaning technology for forging machines, specifically to a jet cleaning device for forging machines. The device includes at least two columns, one positioned on the opposite side of the material guide chute of the forging machine, and the other positioned along the movement path of the loading ladle. A first air supply assembly and a second air supply assembly are mounted on the column on the opposite side of the material guide chute. The first air supply assembly has an air supply pipe connected to a first jet branch pipe, and the second air supply assembly has an air supply pipe connected to a second jet branch pipe. The jet ends of the first and second jet branch pipes are attached to each other and fixed by fasteners. The jet direction of the first air supply assembly is directed towards the bottom wall of the material guide chute to blow up the oxide scale. The combined jet branch pipes 1 and 2 work together to blow the blown oxide scale out of the material guide chute. This invention, through the optimized layout of coordinated blowing by two branch pipes on the material guide chute side and upward tilting jetting along the ladle path, significantly improves the efficiency and integrity of oxide scale removal, effectively preventing surface defects in forgings.

Description

Technical Field

[0001] This invention relates to the field of jet purging technology for forging machines, and specifically to a jet purging device for forging machines. Background Technology

[0002] In the aluminum alloy forging process, after the high-temperature molten aluminum cools in the guide trough and feeding ladle, a dense alumina film (referred to as "oxide scale") easily forms. If not removed in time, this oxide scale will enter the mold cavity with the aluminum material, causing defects such as inclusions and pits on the surface of the forging, seriously affecting the appearance and mechanical properties of the product. Therefore, compressed air is commonly used in industry for online cleaning of the guide trough and feeding ladle. However, existing purging devices typically only have a single nozzle on one side of the feed chute, with a fixed airflow direction. This makes it difficult to simultaneously achieve the dual functions of blowing up the oxide scale attached to the bottom and completely removing debris from the chute. As a result, the oxide scale often falls back and accumulates after being blown up. For the feeding ladle, due to its deep and narrow structure and its location in the moving path, most devices lack a dedicated purging mechanism or simply use general-purpose nozzles that are installed arbitrarily, which cannot effectively remove the residual oxide scale inside the ladle, leading to cross-contamination.

[0003] In addition, most existing nozzles and air supply rods use threaded or quick-connect connections, which are convenient for replacement. However, the circumferential angle and axial position of the nozzle cannot be reproduced after each disassembly and assembly, affecting the purging effect on oxide scale. The machine must be stopped and the purging direction readjusted, which is not only inefficient, but also causes unstable purging effect due to human error. Although some devices are equipped with adjustable brackets to lock the overall angle, once the nozzle or air supply rod is replaced, the bracket must still be loosened and recalibrated, which cannot truly achieve the process requirements of one-time debugging, long-term stability and quick replacement. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention solves the problems that the existing die forging blowing device cannot simultaneously and efficiently remove oxide scale and discharge debris from the bottom of the guide groove, lacks directional blowing capability for the feeding ladle, and cannot reproduce the blowing angle after the nozzle is replaced, requiring repeated adjustments.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a jet purging device for a forging machine, comprising at least two columns. One column is positioned on the opposite side of the material guide trough of the forging machine, and the other column is positioned along the moving path of a feeding ladle. A first air supply assembly and a second air supply assembly are mounted on the column on the opposite side of the material guide trough. The air supply pipe of the first air supply assembly is connected to a jet branch pipe one, and the air supply pipe of the second air supply assembly is connected to a jet branch pipe two. The jet ends of the first and second jet branch pipes are attached to each other and fixed by a fastener. The jet direction of the first air supply assembly is towards the bottom wall of the material guide trough. The combined jet pipes 1 and 2 blow the scale out of the feed chute. A third air supply component is installed on the column located at the moving path of the feeding ladle. Its jet nozzle is tilted upward to blow away the scale inside the feeding ladle. The first, second, and third air supply components are all installed on the corresponding columns through angle adjustment support mechanisms. The angle adjustment support mechanisms are locked after being initially adjusted to the specified blowing angle, so that each air supply component always maintains the specified angle during subsequent use and replacement without the need for readjustment.

[0006] Furthermore, the first air supply assembly includes a metal air supply rod, the air inlet end of which is connected to an air supply pipe, and the air outlet end of which is inserted with a nozzle. An annular positioning seat is fixedly provided on the outer periphery of the metal air supply rod, and at least two positioning grooves are distributed circumferentially on the positioning seat. A thrust sleeve is fixedly fitted on the outer periphery of the nozzle, and a positioning key corresponding to the positioning groove is provided on the inner circumferential side of the thrust sleeve. The positioning key engages with the positioning groove to restrict the circumferential rotation of the nozzle relative to the metal air supply rod and to achieve axial positioning.

[0007] Furthermore, the outer sliding sleeve of the metal air supply rod is provided with a fixed threaded sleeve. The inner wall of the fixed threaded sleeve is provided with an annular groove, and the two sides of the annular groove are respectively provided with internal threads. The fixed threaded sleeve is simultaneously threadedly connected to the thrust sleeve and the outer periphery of the positioning seat through its internal threads, thereby locking the nozzle onto the metal air supply rod.

[0008] Furthermore, the angle adjustment support mechanism includes a sliding sleeve that is slidably sleeved on the column. An arc-shaped elastic pad is fixedly provided on one inner wall of the sliding sleeve, and a first arc-shaped clamp is movably provided on the other side. A first fastening bolt passes through the sliding sleeve and is rotatably connected to the first arc-shaped clamp. The first fastening bolt is threadedly engaged with the sliding sleeve. After tightening, the first arc-shaped clamp and the arc-shaped elastic pad clamp the column, thereby locking the position of the sliding sleeve on the column.

[0009] Furthermore, a rotating rod is rotatably provided on one side of the sliding sleeve, one end of which is fixedly connected to the rotating sleeve. The metal air supply rod passes through the rotating sleeve, and a second arc-shaped clamp is movably provided inside the rotating sleeve. A second fastening bolt passes through the rotating sleeve and is rotatably connected to the second arc-shaped clamp. The second fastening bolt is threadedly engaged with the rotating sleeve. After tightening, the second arc-shaped clamp clamps the metal air supply rod, thereby locking the angle between the metal air supply rod and the nozzle.

[0010] Furthermore, elastic rings are embedded at both ends of the rotating sleeve to elastically fix the metal air supply rod.

[0011] Furthermore, one end of the rotating rod passes through the sliding sleeve, and the outer periphery of this end is provided with circumferentially distributed positioning tooth grooves. Threaded holes are respectively opened on both sides of the corresponding positioning tooth grooves on the sliding sleeve. Threaded clamps are threadedly connected in the threaded holes, and the end of the threaded clamps passes into the corresponding positioning tooth grooves to limit the rotation angle of the rotating rod, so as to realize the rapid positioning of the metal air supply rod and the nozzle after the angle is adjusted.

[0012] Furthermore, an elastic pull rope is connected between the upper end of the fixed threaded sleeve and the rotating sleeve to prevent the fixed threaded sleeve from completely detaching from the nozzle and being lost during disassembly.

[0013] Furthermore, a fixed base is fixedly connected to the bottom of the column, and the fixed base has an oblong mounting hole for adjusting the horizontal installation position of the column and realizing multi-condition adaptation.

[0014] Furthermore, the first and second jet manifolds are made of flexible metal hoses with an internal spiral steel wire skeleton and an external high-temperature resistant rubber coating, which can maintain their shape after being manually bent to the required purging angle.

[0015] Beneficial effects 1. This invention sets up a first air supply component and a second air supply component on opposite sides of the material guide trough, and attaches and fixes the jet ends of jet branch pipe one and jet branch pipe two to form a collaborative blowing structure. The nozzle of the first air supply component faces the bottom wall of the material guide trough, accurately blowing up the attached oxide scale, while the combined airflow from the two branches is concentrated and sprayed along the trough opening, efficiently blowing the already lifted oxide scale completely out of the material guide trough. At the same time, a third air supply component with an upwardly tilted jet nozzle is set at the moving path of the feeding ladle, which can directly blow away the high-temperature oxide scale remaining in the ladle. The jet direction, position and airflow pattern of each air supply component are optimized and arranged, which significantly improves the removal efficiency and coverage integrity of oxide scale in the material guide trough and the feeding ladle, and effectively avoids surface defects of forgings caused by oxide scale accumulation.

[0016] 2. This invention introduces a mechanical positioning and locking structure consisting of a positioning seat, a thrust sleeve, a positioning key, and a fixing threaded sleeve into the air supply assembly. Combined with a multi-stage locking mechanism of the angle adjustment support mechanism, this allows each air supply assembly to be securely locked after initial adjustment to the optimal purging angle. When subsequent maintenance requires replacement of the nozzle or metal air supply rod, the new component is simply assembled according to the original structure. The snap-fit ​​between the positioning key and the positioning groove automatically reproduces the original circumferential angle. The thrust structure ensures consistent axial position. Combined with the locked overall support posture, no readjustment of the angle adjustment support mechanism is required to maintain the original purging angle, significantly reducing downtime and improving process stability and overall equipment efficiency. 3. This invention utilizes a composite purging structure consisting of a first air supply component, a second air supply component, and two parallel fixed jet branch pipes on opposite sides of the material guide trough. This, combined with a third air supply component tilted upwards at 15°–45° along the path of the loading ladle, enables directional high-speed blowing of the bottom wall of the material guide trough and the inner cavity of the ladle. This effectively removes residual oxide scale. This dual cleaning action blocks the path of impurities into the molten aluminum, significantly improving the purity of the melt. This reduces inclusions and micropore defects within the forging, promotes dynamic recrystallization and uniform grain refinement, and ultimately achieves synergistic optimization of the internal density and mechanical properties of the forging. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall mechanism of the present invention in its installation state; Figure 2 This is a schematic diagram of the purge airflow direction of the present invention; Figure 3 This is a schematic diagram of the first gas supply component of the present invention; Figure 4 This is a cross-sectional schematic diagram of the metal air supply rod of the present invention; Figure 5 This is a schematic diagram of the angle adjustment support mechanism of the present invention; Figure 6 This is a schematic diagram showing the disassembled threaded clamp of the present invention; Figure 7 For the present invention Figure 3 A top-down view; Figure 8 For the purposes of this invention Figure 7 Schematic diagram of cross-section from point A to point A.

[0019] Reference numerals: 1. Column; 11. Fixed base; 2. First air supply assembly; 21. Metal air supply rod; 22. Nozzle; 23. Positioning seat; 24. Thrust sleeve; 25. Positioning key; 26. Fixed threaded sleeve; 27. Elastic pull rope; 3. Second air supply assembly; 4. Third air supply assembly; 5. Angle adjustment support mechanism; 51. Sliding sleeve; 511. Threaded hole; 52. Arc-shaped elastic pad; 53. First arc-shaped clamp; 54. First fastening bolt; 55. Rotating sleeve; 56. Rotating rod; 561. Positioning groove; 562. Threaded clamp; 57. Second arc-shaped clamp; 58. Second fastening bolt; 59. Elastic ring; 6. Jet branch pipe one; 7. Jet branch pipe two; 8. Fixing component. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to embodiments.

[0022] See attached document Figure 1-8 A jet purging device for a forging machine includes at least two columns 1, one of which is installed on the opposite side of the guide chute of the forging machine (i.e., the side facing the opening of the guide chute), and the other column 1 is located near the moving path of the feeding ladle during operation.

[0023] On the column 1 located on the opposite side of the feed chute, a first air supply assembly 2 and a second air supply assembly 3 are installed. The air supply pipe of the first air supply assembly 2 is connected to a jet branch pipe 6 at the end, and the air supply pipe of the second air supply assembly 3 is connected to a jet branch pipe 7 at the end.

[0024] refer to Figure 2 and Figure 3 As shown, the jet ends of jet manifold 6 and jet manifold 7 are fitted together and rigidly fixed by fasteners 8 (such as stainless steel cable ties or clamps), so that the two form a stable side-by-side structure.

[0025] During operation, the jet direction of the first air supply component 2 is precisely directed towards the bottom wall of the guide trough, using high-speed airflow to blow up the oxide scale attached to the bottom of the trough. At the same time, the composite airflow formed by the merging of jet branch pipe 1 6 and jet branch pipe 2 7 is concentrated and sprayed along the outlet direction of the guide trough, completely blowing the oxide scale particles that have been lifted away from the guide trough and preventing them from falling back and accumulating.

[0026] A third air supply component 4 is installed on the column 1 at the moving path of the feeding ladle. The air jet of the third air supply component 4 is designed to be tilted upward (preferably at an angle of 15° to 45°) so that the airflow can be directly injected into the interior of the feeding ladle, effectively removing the residual high-temperature oxide scale inside the ladle and preventing the aluminum liquid from carrying impurities into the mold.

[0027] The aforementioned efficient purging mechanism not only significantly improves the cleanliness of the guide trough and the feeding ladle, but more importantly, it blocks the path of non-metallic inclusions (such as oxide scale, slag, etc.) into the molten aluminum from the source. In the die forging process, the optimization of the internal structure quality of the forging refers to the process of controlling the purity of the melt, the hot deformation regime and the cooling conditions to form a dense microstructure with fine grains, uniform distribution, no macroscopic segregation, pores or inclusion defects inside the forging, thereby obtaining high density, good isotropy and excellent comprehensive mechanical properties (such as tensile strength, elongation and fatigue life).

[0028] It should be noted that the cleanliness of raw materials and melt is the primary prerequisite for determining the final microstructure quality of forgings. Once impurities such as oxide scale enter the mold with the molten aluminum, they are difficult to weld completely during the subsequent high-pressure forming process. This can easily lead to the formation of microcrack sources or weakening of grain boundaries inside the forging, resulting in local stress concentration, reduced plasticity, and even early service failure.

[0029] This device establishes a dual cleaning guarantee mechanism by setting up multi-directional precision spraying systems at the outlet side of the guide trough and at the running path of the feeding ladle. On the one hand, the composite airflow formed by the parallel fixed jet branch pipe 6 and jet branch pipe 7 has stronger penetration and coverage, which can efficiently remove the stubborn oxide scale attached to the bottom of the guide trough. On the other hand, the third air supply component 4 blows the inner cavity of the ladle at an upward tilt angle of 15° to 45° to ensure that there is no residual oxide film on the aluminum liquid contact surface. This synergistic effect significantly improves the metallurgical purity of the aluminum liquid before entering the mold, creating ideal conditions for the full dynamic recrystallization, effective reorganization of dislocation structure, and uniform grain refinement during the subsequent hot forging process.

[0030] It is worth emphasizing that the organization's quality optimization effect does not rely on additional heat treatment processes or complex process parameter adjustments, but rather achieves preventive cleanliness control through the innovative mechanical structure of this device. It is a low-cost and high-efficiency process assurance method, which is particularly suitable for high-end aluminum alloy parts manufacturing fields such as aerospace and new energy vehicles, where the requirements for the internal integrity and reliability of forgings are extremely stringent.

[0031] The first air supply component 2, the second air supply component 3, and the third air supply component 4 are all installed on the corresponding columns 1 through the angle adjustment support mechanism 5. The angle adjustment support mechanism 5 can be adjusted in multiple degrees of freedom during the initial installation. After being adjusted to the optimal purging angle, it is locked to ensure that each air supply component maintains the specified purging angle during subsequent long-term use and component replacement without repeated adjustments.

[0032] Specifically, the structural housings of the first air supply component 2, the second air supply component 3, and the third air supply component 4, taking the first air supply component 2 as an example, include a hollow metal air supply rod 21. The air inlet end of the metal air supply rod 21 is sealed and connected to an external compressed air pipeline, and the air outlet end is connected to a detachable nozzle 22.

[0033] like Figure 4 As shown, an annular positioning seat 23 is integrally machined or welded to the outer periphery of the metal air supply rod 21 near the air outlet end. The positioning seat 23 has at least two axially extending positioning grooves in the circumferential direction.

[0034] A thrust sleeve 24 is fixedly fitted around the outer periphery of the nozzle 22. The thrust sleeve 24 can be made of stainless steel or engineering plastic and is fixedly connected to the nozzle 22. On the inner circumferential surface of the thrust sleeve 24, a positioning key 25 matching the positioning groove is provided. When the nozzle 22 is inserted into the metal air supply rod 21, the positioning key 25 is embedded in the positioning groove, thereby restricting the circumferential rotation of the nozzle 22 relative to the metal air supply rod 21. The precise axial positioning is achieved by the fit between the end face of the thrust sleeve 24 and the end face of the positioning seat 23.

[0035] To further tighten the seal, a fixed threaded sleeve 26 is slidably fitted on the outer side of the metal air supply rod 21. An annular groove is formed in the middle of the inner wall of the fixed threaded sleeve 26, and internal threads with the same direction of rotation are machined on both sides of the annular groove's inner wall. The fixed threaded sleeve 26 engages with the external threads on the outer periphery of the thrust sleeve 24 and the external threads on the outer periphery of the positioning seat 23 via its internal threads. Tightening the fixed threaded sleeve 26 securely locks the nozzle 22 onto the metal air supply rod 21, preventing loosening or air leakage.

[0036] like Figure 5 and Figure 6As shown, the angle adjustment support mechanism 5 mainly includes a sliding sleeve 51, which can slide and be positioned along the axial direction of the column 1. An arc-shaped elastic pad 52, such as rubber or polyurethane material, is fixed on one inner wall of the sliding sleeve 51. A movable first arc-shaped clamp 53 is provided on the other side. A first fastening bolt 54 passes through the side wall of the sliding sleeve 51, and its end is rotatably connected to the first arc-shaped clamp 53. The first fastening bolt 54 is threadedly engaged with the sliding sleeve 51. After tightening the first fastening bolt 54, the first arc-shaped clamp 53 presses the column 1 inward, and together with the arc-shaped elastic pad 52, clamps the column 1, thereby locking the height and circumferential position of the sliding sleeve 51 on the column 1.

[0037] On one side of the sliding sleeve 51, a rotating rod 56 is rotatably mounted via a rotating shaft. One end of the rotating rod 56 is fixedly connected to the rotating sleeve 55. The metal air supply rod 21 passes through the inside of the rotating sleeve 55. The rotating sleeve 55 is provided with a second arc-shaped clamp 57. The second fastening bolt 58 passes through the rotating sleeve 55 and is rotatably connected to the second arc-shaped clamp 57. At the same time, it is threadedly engaged with the rotating sleeve 55. After tightening the second fastening bolt 58, the second arc-shaped clamp 57 clamps the metal air supply rod 21, thereby locking its pitch angle.

[0038] To improve sealing and vibration reduction performance, elastic rings 59, such as O-rings or silicone rings, are embedded at both ends of the rotating sleeve 55 to provide elastic support and cushioning for the passing metal air supply rod 21.

[0039] In addition, a circumferentially distributed positioning tooth groove 561 is provided on the outer periphery of the end of the rotating rod 56 that extends out of the sliding sleeve 51. On the sliding sleeve 51, corresponding to the two sides of the positioning tooth groove 561, threaded holes 511 are respectively provided. Threaded locking rods 562 are threadedly connected to the threaded holes 511. When the rotating rod 56 is adjusted to the required angle, the two threaded locking rods 562 are screwed in and their ends are simultaneously inserted into the same set of positioning tooth grooves 561, so that the angle of the rotating rod 56 can be quickly positioned and prevented from loosening.

[0040] To prevent the fixed threaded sleeve 26 from accidentally falling off and being lost during maintenance, an elastic pull rope 27 is connected between the upper end of the fixed threaded sleeve 26 and the rotating sleeve 55. It is made of stainless steel wire wrapped with silicone, and its length is slightly shorter than the maximum distance between the two. This does not affect the operation and can also play a role in limiting and preventing loss.

[0041] Furthermore, each column 1 is fixedly connected to a base 11 at its bottom. The base 11 has a waist-shaped mounting hole, which can be bolted to install the entire device on the forging machine frame. It also allows for fine adjustment of the position of the column 1 in the horizontal direction to adapt to different models of equipment or process layouts and improve versatility.

[0042] Finally, jet manifold 6 and jet manifold 7 are preferably made of flexible metal hoses. These hoses have an internal spiral stainless steel wire skeleton and are externally covered with a high-temperature resistant rubber or silicone layer. During on-site installation, operators can manually bend jet manifold 6 and jet manifold 7 to the optimal purging angle according to the actual structure of the feed chute. After releasing the hose, it retains its shape due to its own rigidity, combining the advantages of flexible installation and rigid shaping, significantly improving the purging coverage accuracy.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A jet purging device for a die forging machine, characterized in that, The machine includes at least two columns (1), one of which is located on the opposite side of the guide trough of the forging machine, and the other column (1) is located at the moving path of the loading ladle. A first air supply assembly (2) and a second air supply assembly (3) are installed on the column (1) located on the opposite side of the guide trough. The air supply pipe of the first air supply assembly (2) is connected to a jet branch pipe one (6), and the air supply pipe of the second air supply assembly (3) is connected to a jet branch pipe two (7). The jet ends of the jet branch pipe one (6) and the jet branch pipe two (7) are attached to each other and fixed by a fastener (8). The jet direction of the first air supply assembly (2) is towards the bottom wall of the guide trough to blow up the material. The combined jet pipe 1 (6) and jet pipe 2 (7) blow the oxide scale out of the guide trough. A third air supply component (4) is installed on the column (1) located at the moving path of the feeding ladle. Its jet nozzle is tilted upward to blow away the oxide scale in the feeding ladle. The first air supply component (2), the second air supply component (3) and the third air supply component (4) are all installed on the corresponding column (1) through the angle adjustment support mechanism (5). The angle adjustment support mechanism (5) is locked after being adjusted to the specified blowing angle for the first time, so that each air supply component always maintains the specified angle during subsequent use and replacement, without the need for readjustment.

2. The jet purging device for a forging machine according to claim 1, characterized in that, The first air supply component (2) includes a metal air supply rod (21). The air inlet end of the metal air supply rod (21) is connected to the air supply pipe, and the air outlet end is connected to a nozzle (22). An annular positioning seat (23) is fixedly provided on the outer periphery of the metal air supply rod (21). At least two positioning grooves are distributed circumferentially on the positioning seat (23). A thrust sleeve (24) is fixedly sleeved on the outer periphery of the nozzle (22). A positioning key (25) corresponding to the positioning groove is provided on the inner circumferential side of the thrust sleeve (24). The positioning key (25) is engaged with the positioning groove to restrict the circumferential rotation of the nozzle (22) relative to the metal air supply rod (21) and achieve axial positioning.

3. The jet purging device for a forging machine according to claim 2, characterized in that, The outer side of the metal air supply rod (21) is provided with a fixed threaded sleeve (26). The inner wall of the fixed threaded sleeve (26) is provided with an annular groove. The two sides of the annular groove are respectively provided with internal threads. The fixed threaded sleeve (26) is connected to the thrust sleeve (24) and the outer thread of the positioning seat (23) through its internal thread, thereby locking the nozzle (22) onto the metal air supply rod (21).

4. The jet purging device for a forging machine according to claim 3, characterized in that, The angle adjustment support mechanism (5) includes a sliding sleeve (51) that is slidably sleeved on the column (1). An arc-shaped elastic pad (52) is fixedly provided on one inner wall of the sliding sleeve (51), and a first arc-shaped clamp (53) is movably provided on the other side. A first fastening bolt (54) passes through the sliding sleeve (51) and is rotatably connected to the first arc-shaped clamp (53). The first fastening bolt (54) is threadedly engaged with the sliding sleeve (51). After tightening, the first arc-shaped clamp (53) and the arc-shaped elastic pad (52) clamp the column (1), thereby locking the position of the sliding sleeve (51) on the column (1).

5. The jet purging device for a forging machine according to claim 4, characterized in that, A rotating rod (56) is rotatably provided on one side of the sliding sleeve (51). One end of the rotating rod (56) is fixedly connected to the rotating sleeve (55). The metal air supply rod (21) passes through the rotating sleeve (55). A second arc-shaped clamp (57) is movably provided inside the rotating sleeve (55). A second fastening bolt (58) passes through the rotating sleeve (55) and is rotatably connected to the second arc-shaped clamp (57). The second fastening bolt (58) is threadedly engaged with the rotating sleeve (55). After tightening, the second arc-shaped clamp (57) clamps the metal air supply rod (21), thereby locking the angle between the metal air supply rod (21) and the nozzle (22).

6. The jet purging device for a forging machine according to claim 5, characterized in that, Both ends of the rotating sleeve (55) are fitted with elastic rings (59) for elastically fixing the metal air supply rod (21).

7. The jet purging device for a forging machine according to claim 6, characterized in that, One end of the rotating rod (56) passes through the sliding sleeve (51), and the outer periphery of the end is provided with circumferentially distributed positioning grooves (561). The sliding sleeve (51) is provided with threaded holes (511) on both sides corresponding to the positioning grooves (561). A threaded clamp (562) is threadedly connected in the threaded hole (511). The end of the threaded clamp (562) is inserted into the corresponding positioning groove (561) to limit the rotation angle of the rotating rod (56) and realize the rapid positioning of the metal air supply rod (21) and the nozzle (22) after the angle is adjusted.

8. The jet purging device for a forging machine according to claim 4, characterized in that, An elastic pull rope (27) is connected between the upper end of the fixed threaded sleeve (26) and the rotating sleeve (55) to prevent the fixed threaded sleeve (26) from being completely detached from the nozzle (22) and lost during disassembly.

9. The jet purging device for a forging machine according to claim 1, characterized in that, The bottom of the column (1) is fixedly connected to a fixed base (11), and the fixed base (11) has a waist-shaped mounting hole for adjusting the installation position of the column (1) in the horizontal direction and realizing multi-condition adaptation.

10. The jet purging device for a forging machine according to claim 1, characterized in that, The first jet pipe (6) and the second jet pipe (7) are made of flexible metal hoses with a spiral steel wire skeleton inside and a high-temperature resistant rubber coating on the outside. They can maintain their shape after being manually bent to the required blowing angle.

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