Steel pipe cut-off machine for manufacturing shock absorber bushing

Abstract

The steel pipe cut-off machine comprises a machine body, a discharging groove, a rolling material conveying mechanism, a cutting tool and a scrap iron collecting device, and the scrap iron collecting device comprises a collecting cavity, a pair of opening and closing cover plates, an opening and closing control device for controlling actions, a pair of scrap iron adsorption devices and a pair of cleaning devices. The cleaning devices are symmetrically arranged on the left side and the right side of the collecting cavity, each cleaning device comprises a cleaning wheel, a telescopic mechanism and a rotary driving mechanism and is used for sweeping scrap iron in the opening and closing cover plate in the shape of a V-shaped groove into the collecting cavity, and in daily use, by means of the technical scheme, cut-off shock absorber bushings fall into the discharging groove, and the scrap iron in the V-shaped groove-shaped opening and closing cover plate is removed. When the scrap iron cleaning device rolls downwards from the pair of opening and closing cover plates, scraps are adsorbed to the top surfaces of the pair of opening and closing cover plates by the scrap iron adsorption device, and when cleaning is needed, the opening and closing control device controls the pair of opening and closing cover plates to change the V-shaped groove shape and the cleaning device to act, so that the cleaning wheel enters the space between the pair of opening and closing cover plates, the scrap iron is cleaned into the collecting cavity, and waste scraps are conveniently collected.

Description

Technical Field

[0001] The invention relates to the field of shock absorber bushing manufacturing, in particular to a steel pipe cutting machine for shock absorber bushing manufacturing. Background Art

[0002] The bushings used in automobile shock absorbers are generally annular structures, which are sleeved on the piston rod or other key parts of the shock absorber. Some iron bushings may have some special patterns or grooves inside to increase the friction with other parts or better accommodate lubricating grease. Shock absorber bushings are mainly made of iron or iron alloys, have high strength and hardness, and can withstand greater pressure and friction. During the manufacturing process, it is necessary to cut the steel pipe to obtain the rough blank of the shock absorber bushing. In the prior art, a Chinese invention patent with a notice number of CN211438947U is used to cut the steel pipe. The equipment reasonably combines the feeding device, cutting device, stamping device, external cylindrical processing device, and automatic material picking device together, and effectively controls the overall equipment by setting a new control system, but its defects are: When the cutting device cuts the steel pipe, spiral waste chips and powdered iron chips will be generated. The treatment method adopted by this equipment is "the iron chip removal mechanism located on the side of the first station blows air to the steel pipe", which will cause the iron chips to fly everywhere and is inconvenient to clean. Summary of the invention

[0003] The present invention aims to solve one of the technical problems existing in the prior art.

[0004] The present application provides a steel pipe cutting machine for manufacturing a shock absorber bushing, comprising a machine body, a material discharge chute, a rolling material conveying mechanism, a material cutting tool and an iron chip collecting device, wherein the iron chip collecting device comprises: A collecting chamber is arranged in the machine body and below the feeding chute; A pair of opening and closing cover plates are movably mounted at the bottom of the feeding chute, and the adjacent ends are movably connected by hinge shafts. The movement is controlled by an opening and closing control device, so that the pair of opening and closing cover plates form a flat plate or a V-shaped groove; A pair of iron filings adsorption devices, with electromagnets that can be powered on and off, adsorb iron filings on each opening and closing cover plate through magnetic force; A pair of cleaning devices are symmetrically arranged on the left and right sides of the collecting chamber, including cleaning wheels, telescopic mechanisms and rotary drive mechanisms, and are used to sweep iron filings in the V-shaped opening and closing cover into the collecting chamber.

[0005] The opening and closing control device includes: A fixed rotating shaft, the middle of which is rotatably matched with the lower end of the lower opening and closing cover plate, and the two ends are respectively fixedly connected to the left and right inner walls of the collecting chamber; A pair of inclined guide grooves are symmetrically arranged on the left and right inner walls of the collecting chamber, and the lower ends thereof are inclined below the lower material trough; A movable rotating shaft, the middle part of which is rotatably matched with the upper end of the upper opening and closing cover plate, and the two ends of which are respectively slidably matched with the corresponding inclined guide grooves; The lower end of the opening and closing control cylinder is hinged to the inner wall of the front end of the collecting chamber, and the outer end of the piston is hinged to the bottom surface of the lower opening and closing cover plate.

[0006] The iron chips adsorption device includes: A lifting chamber is arranged in the opening and closing cover plate, with side through grooves at the bottom of both left and right ends and a plurality of upper through grooves arranged at intervals at the top; A floating plate, which can be lifted and lowered in the lifting chamber by a lifting control mechanism, and has a plurality of electromagnets on the top; Among them, each electromagnet is slidably matched with the corresponding upper through slot, and each electromagnet can rise until the top surface is flush with the top surface of the corresponding opening and closing cover plate. Each electromagnet is powered off when it descends and powered on when it rises.

[0007] The lifting control mechanism includes: A pair of slide plates are slidably mounted in the lifting chamber, a number of return springs are arranged between adjacent end surfaces, and the top surfaces are both transmission-connected to the bottom surface of the floating plate through a number of swing rods; A pair of protrusions are respectively fixed on the outer ends of each slide plate; A pair of top blocks are symmetrically fixed on the left and right inner walls of the collecting chamber, and the top ends are inclined.

[0008] The telescopic mechanism includes: An upper vertical groove, which is arranged on the left inner wall / right inner wall of the collecting chamber; A lower vertical groove, which is arranged at the bottom of the upper vertical groove, and the lower end of which is flush with the bottom surface of the collecting chamber; A telescopic frame, which is laterally slidably mounted at the bottom of the upper vertical slot; A swing arm, one end of which is hinged to the outer end of the telescopic frame through a driven rotating shaft; A lifting control cylinder is fixed at the bottom of the lower vertical slot, and the top end is hinged to the top end of the swing arm through an active rotating shaft; Wherein, the cleaning wheel is installed on the driven rotating shaft.

[0009] Telescopic frame includes: An outer sliding frame is installed in a transverse sliding manner at the bottom of the upper vertical slot; An inner sliding frame, which is laterally slidably mounted on the outer sliding frame; A plurality of transverse sliding grooves are respectively arranged on the inner walls on opposite sides of the upper vertical groove and the outer sliding frame; A plurality of horizontal sliding blocks are respectively arranged on the outer walls of both sides of the outer sliding frame and the inner sliding frame; Wherein, notches are arranged on the bottom surfaces of the inner and outer ends of the outer sliding frame and the inner sliding frame.

[0010] The rotary drive mechanism includes: A pair of side grooves are arranged on the inner wall of the collecting chamber, respectively located on both sides of the upper vertical groove, and both are connected to the upper vertical groove through the long through groove; A pair of racks are respectively arranged on the inner end surface of each side groove; A pair of gears are fixedly mounted on both ends of the driving shaft and mesh with corresponding racks.

[0011] The rotary drive mechanism also includes: A pair of pulleys are respectively fixed on the driven rotating shaft and the driving rotating shaft; A transmission belt is mounted on a pair of pulleys.

[0012] The beneficial effects of the present invention are as follows: 1. Through the arrangement of a collecting chamber, a pair of opening and closing covers, an opening and closing control device, a pair of iron chip adsorption devices and a pair of cleaning devices, iron chips are adsorbed on the top surface of a pair of opening and closing covers. When cleaning is required, the pair of opening and closing covers are closed into a V shape, and the electromagnet is powered off. Then, the cleaning device cleans the waste chips at the bottom of the V-shaped groove formed by the pair of opening and closing covers into the collecting chamber, so as to facilitate the centralized treatment of iron chips. 2. By setting a fixed rotating shaft, a pair of inclined guide grooves, a movable rotating shaft and an opening and closing control cylinder, a pair of opening and closing cover plates can be turned around the hinge shaft by simply controlling the piston extension of the opening and closing control cylinder to form a flat plate to block the bottom of the material chute or form a V-shaped groove to extend into the collection chamber, which can effectively prevent iron chips from escaping outside the material chute and improve the collection efficiency of iron chips; 3. Through the arrangement of the lifting chamber, the side through slots, a plurality of upper through slots, the floating plates, a plurality of electromagnets, a pair of slide plates, a plurality of return springs, a plurality of swing rods, a pair of protrusions and a pair of top blocks, when a pair of opening and closing covers are closed / opened, each electromagnet is controlled to rise to push the iron filings out of the upper through slots / fall down to expose the upper through slots, so that the surface of the opening and closing covers can accommodate more iron filings, thereby extending the interval between two cleaning actions of the equipment and improving the production efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional diagram of a steel pipe cutting machine for manufacturing a shock absorber bushing in an embodiment of the present application; Figure 2 A top view of a steel pipe cutting machine for manufacturing a shock absorber bushing in an embodiment of the present application; Figure 3 A three-dimensional diagram of a steel pipe cutting machine for manufacturing a shock absorber bushing in an embodiment of the present application (cut from the left side of the center); Figure 4 This is a three-dimensional diagram of the lifting control mechanism in the embodiment of the present application; Figure 5 A stereoscopic diagram of a pair of opening and closing cover plates, an opening and closing control device, a pair of iron filings adsorption devices and a pair of cleaning devices in an embodiment of the present application; Figure 6 for Figure 5 A schematic diagram of the partially enlarged structure at center A; Figure 7 This is a three-dimensional view of a steel pipe cutting machine for manufacturing a shock absorber bushing in an embodiment of the present application (cut from the left side).

[0014] Reference numerals 1-body, 2-feeding chute, 3-rolling conveying mechanism, 4-cutting tool, 5-iron chip collecting device, 51-collecting chamber, 52-opening and closing cover, 6-opening and closing control device, 61-fixed rotating shaft, 62-oblique guide groove, 63-movable rotating shaft, 64-opening and closing control cylinder, 7-iron chip adsorption device, 71-electromagnet, 72-side through groove, 73-upper through groove, 74-lifting control mechanism, 741-slide plate, 742-swing rod, 743-bump, 74 4-top block, 8-cleaning device, 81-cleaning wheel, 82-telescopic mechanism, 821-upper vertical groove, 822-lower vertical groove, 823-swing arm, 824-driven rotating shaft, 825-lifting control cylinder, 826-driving rotating shaft, 83-rotation driving mechanism, 831-side groove, 832-rack, 833-gear, 834-pulley, 835-transmission belt, 9-telescopic frame, 91-outer sliding frame, 92-inner sliding frame, 93-horizontal sliding block. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0016] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0017] The steel pipe cutting machine for manufacturing the shock absorber bushing provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0018] Embodiment 1: like Figures 1 to 7As shown, the embodiment of the present application provides a steel pipe cutting machine for manufacturing shock absorber bushings, including a machine body 1, a feed chute 2, a rolling conveying mechanism 3, a cutting tool 4 and an iron chip collecting device 5, the iron chip collecting device 5 including a collecting chamber 51, which is arranged in the machine body 1 and is located below the feed chute 2; a pair of opening and closing cover plates 52, movably mounted at the bottom of the feed chute 2, adjacent ends movably connected by hinge shafts, and the movement is controlled by an opening and closing control device 6, so that the pair of opening and closing cover plates 52 form a flat plate or a V-shaped groove; a pair of iron chip adsorption devices 7, having an electromagnet 71 that can be turned on and off, and adsorbing iron chips on each opening and closing cover plate 52 by magnetic force; a pair of cleaning devices 8, symmetrically arranged on the left and right sides of the collecting chamber 51, including cleaning wheels 81, a telescopic mechanism 82 and a rotating drive mechanism 83, for sweeping iron chips in the V-shaped opening and closing cover plate 52 into the collecting chamber 51.

[0019] Furthermore, the opening and closing control device 6 includes a fixed rotating shaft 61, a middle portion of which is rotatably matched with the lower end of the lower opening and closing cover plate 52, and both ends are respectively fixedly connected to the left and right inner walls of the collecting chamber 51; a pair of inclined guide grooves 62, which are symmetrically arranged on the left and right inner walls of the collecting chamber 51, and the lower ends are inclined toward the bottom of the lower material trough 2; a movable rotating shaft 63, a middle portion of which is rotatably matched with the upper end of the upper opening and closing cover plate 52, and both ends are respectively slidably matched with the corresponding inclined guide grooves 62; an opening and closing control cylinder 64, a lower end of which is hinged to the inner wall of the front end of the collecting chamber 51, and the outer end of its piston is hinged to the bottom surface of the lower opening and closing cover plate 52.

[0020] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the rolling conveyor mechanism 3 sends the steel pipe to the cutting range of the cutting tool 4 for cutting, and the cut shock absorber bushing falls to the top of the discharge chute 2, and under the action of gravity, rolls down from the top of a pair of opening and closing cover plates 52. At this time, the electromagnet 71 is energized to adsorb iron filings on the surface of the openable and closable cover plates 52, and the magnetic field strength of the electromagnet 71 is set to a level that it cannot adsorb the shock absorber bushing and can only adsorb iron filings. When it is necessary to clean the iron filings on the top surface of the pair of opening and closing cover plates 52, the opening and closing control cylinder 64 is actuated, and the piston rod is retracted, driving the lower opening and closing cover plate 52 to flip around the fixed rotating shaft 61 into the collecting chamber 51, and in conjunction with this, the upper opening and closing cover plate 52 is dragged to move into the collecting chamber 51, and the movable rotating shaft 63 slides toward the lower end of a pair of inclined guide grooves 62, and the lower end of the lower opening and closing cover plate 52 and the upper end of the upper opening and closing cover plate 52 approach each other, and finally the upper end of the lower opening and closing cover plate 52 and the upper end of the upper opening and closing cover plate 52 are at the same horizontal height. At this time, the pair of opening and closing cover plates 52 form a V-shaped groove, the electromagnet 71 is powered off, and iron filings fall to the bottom of the V-shaped groove formed by the pair of opening and closing cover plates 52, and the telescopic mechanisms 82 of the pair of cleaning devices 8 are actuated, so that the pair of cleaning wheels 81 are simultaneously extended into the V-shaped groove formed by the pair of opening and closing cover plates 52 from both sides, and each rotating drive mechanism 83 is actuated successively, so that the pair of cleaning wheels 81 are successively extended into the V-shaped groove formed by the pair of opening and closing cover plates 52 and rotated at the same time, so as to sweep the debris at the bottom of the V-shaped groove formed by the pair of opening and closing cover plates 52 into the collecting chamber 51.

[0021] Embodiment 2: like Figures 3 to 5 As shown, in the present embodiment, in addition to the structural features of the aforementioned embodiments, the iron chip adsorption device 7 includes a lifting chamber, which is arranged in the opening and closing cover plate 52, and side through grooves 72 are provided at the bottoms of the left and right ends, and a plurality of upper through grooves 73 arranged at intervals are provided on the top; a floating plate, which can be lifted and installed in the lifting chamber through a lifting control mechanism 74, and a plurality of electromagnets 71 are provided on the top; wherein each electromagnet 71 is slidably matched with the corresponding upper through groove 73, and each electromagnet 71 can rise to the top surface flush with the top surface of the corresponding opening and closing cover plate 52, and each electromagnet 71 is powered off when descending and powered on when ascending.

[0022] Furthermore, the lifting control mechanism 74 includes a pair of slides 741, which are slidably installed in the lifting chamber, and a number of return springs are provided between adjacent end faces. The top surfaces are transmission-connected to the bottom surface of the floating plate through a number of rocker rods 742; a pair of protrusions 743 are respectively fixed on the outer ends of each slide 741; a pair of top blocks 744 are symmetrically fixed on the left and right inner walls of the collecting chamber 51, and the top ends are inclined.

[0023] In this embodiment of the present application, due to the adoption of the above-mentioned structure, when a pair of opening and closing cover plates 52 form a flat plate to block the bottom of the discharge chute 2, each return spring (not shown in the figure) is extended, the adjacent ends of a pair of slide plates 741 are in a state of maximum spacing, and the top surface of the pair of slide plates 741 abuts against the bottom surface of the floating plate, and the swing arms 823 respectively located on the pair of slide plates 741 are in an eight-shaped shape, and each electromagnet 71 is located at the bottom of the corresponding upper through groove 73, and each protrusion 743 is away from the corresponding top block 744. In the process of the pair of opening and closing cover plates 52 closing together, each protrusion 743 moves downward and contacts with the inclined top surface of each top block 744, and each protrusion 743 slides toward the adjacent side wall of the corresponding top block 744, and the distance between each protrusion 743 is reduced. The pair of slide plates 741 approach each other, and each return spring is compressed and shortened. After storing elastic potential energy, each swing arm 823 flips over and pushes the floating plate to rise until the outer end of each protrusion 743 contacts the side wall of the corresponding top block 744, and each electromagnet 71 rises to the top surface flush with the top surface of the corresponding opening and closing cover plate 52. Each electromagnet 71 is powered off, and each swing arm 823 located on a pair of slides 741 is parallel to each other. Conversely, when a pair of opening and closing cover plates 52 are unfolded, each protrusion 743 first slides from the side wall of each top block 744 to the inclined top, and finally separates from the corresponding top block 744. Each reset spring releases elastic potential energy and pushes the pair of slides 741 to separate, and pulls the floating plate down through the pair of swing arms 823. Each electromagnet 71 descends at the same time, and each upper through groove 73 is exposed. When each protrusion 743 is completely separated from the corresponding top block 744, the top surface of each slide 741 contacts the bottom surface of the floating plate.

[0024] Each upper through slot 73 and the corresponding electromagnet 71 may be arranged in an inclined shape to prevent iron filings from sliding downward from the gaps between the upper through slots 73 .

[0025] Embodiment 3: like Figures 5 to 7 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the telescopic mechanism 82 includes an upper vertical groove 821, which is arranged on the left inner wall / right inner wall of the collecting chamber 51; a lower vertical groove 822, which is arranged at the bottom of the upper vertical groove 821, and the lower end is flush with the bottom surface of the collecting chamber 51; a telescopic frame 9, which is laterally slidably installed at the bottom of the upper vertical groove 821; a swing arm 823, one end of which is hinged to the outer end of the telescopic frame 9 through a driven shaft 824; a lifting control cylinder 825, which is fixed at the bottom of the lower vertical groove 822, and the top end is hinged to the top end of the swing arm 823 through an active shaft 826, and the cleaning wheel 81 is installed on the driven shaft 824.

[0026] Furthermore, the telescopic frame 9 includes an outer sliding frame 91, which is laterally slidably installed at the bottom of the upper vertical groove 821; an inner sliding frame 92, which is laterally slidably installed in the outer sliding frame 91; a plurality of transverse sliding grooves, which are respectively arranged on the inner walls on the opposite sides of the upper vertical groove 821 and the outer sliding frame 91; a plurality of transverse sliding blocks 93, which are respectively arranged on the outer walls on both sides of the outer sliding frame 91 and the inner sliding frame 92, and the inner and outer bottom surfaces of the outer sliding frame 91 and the inner sliding frame 92 are both provided with notches.

[0027] Furthermore, the rotating drive mechanism 83 includes a pair of side grooves 831, which are arranged on the inner wall of the collecting chamber 51, respectively located on both sides of the upper vertical groove 821, and are connected to the upper vertical groove 821 through a long through groove; a pair of racks 832, respectively arranged on the inner end surfaces of each side groove 831; a pair of gears 833, respectively fixedly mounted at both ends of the active rotating shaft 826, and meshing with the corresponding racks 832.

[0028] Furthermore, the rotary drive mechanism 83 also includes a pair of pulleys 834 , which are respectively fixed on the driven rotating shaft 824 and the driving rotating shaft 826 ; and a transmission belt 835 , which is installed on the pair of pulleys 834 .

[0029] In this embodiment of the present application, due to the adoption of the above-mentioned structure, a pair of lifting control cylinders 825 are operated successively, so that each piston rod first descends and then rises, driving the upper end of each swing arm 823 to descend and then rise, and the lower end of each swing arm 823 first pushes the corresponding inner sliding frame 92 and the corresponding outer sliding frame 91 to slide into the V-shaped groove formed by the pair of opening and closing cover plates 52, and then pulls the corresponding inner sliding frame 92 and the corresponding outer sliding frame 91 away from the V-shaped groove formed by the closing cover plates 52, and each cleaning wheel 81 first extends into the V-shaped groove formed by the pair of opening and closing cover plates 52, and then leaves the V-shaped groove formed by the pair of opening and closing cover plates 52, and the corresponding gear 833 is engaged with the corresponding rack 832 to drive the active shaft 826 to rotate, and then drives the driven shaft 826 through a pair of pulleys 834 and a transmission belt 835. The rotating shaft 824 and the cleaning wheel 81 rotate, and when the cleaning wheel 81 enters the V-shaped groove formed by a pair of opening and closing cover plates 52, the debris at the bottom of the V-shaped groove is swept outward into the collecting chamber 51. When the cleaning wheel 81 moves outward of the V-shaped groove, the remaining debris in the V-shaped groove is swept toward the opposite cleaning wheel 81. Since a pair of lifting control cylinders 825 are actuated successively, when the first cleaning wheel 81 enters the V-shaped groove formed by the pair of opening and closing cover plates 52 and exits outward, the other cleaning wheel 81 enters the V-shaped groove formed by the pair of opening and closing cover plates 52. During the process of entering the V-shaped groove formed by the pair of opening and closing cover plates 52, the second cleaning wheel 81 maintains a small distance from the first cleaning wheel 81 to prevent iron filings swept toward the second cleaning wheel 81 when the first cleaning wheel 81 exits from flying out of the collecting chamber 51.

[0030] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0031] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A steel pipe cutting machine for manufacturing shock absorber bushings, comprising a machine body (1), a feeding chute (2), a rolling material conveying mechanism (3), a cutting tool (4) and an iron chip collecting device (5), characterized in that: The iron filings collecting device (5) comprises: A collecting chamber (51), which is arranged in the machine body (1) and is located below the material discharge chute (2); A pair of opening and closing cover plates (52) are movably mounted on the bottom of the material discharge chute (2), and the adjacent ends are movably connected via hinge shafts. The movement is controlled by an opening and closing control device (6) so that the pair of opening and closing cover plates (52) form a flat plate shape or a V-shaped groove shape; A pair of iron filings adsorption devices (7) having an electromagnet (71) that can be turned on and off, and adsorbing the iron filings onto each of the opening and closing cover plates (52) by magnetic force; A pair of cleaning devices (8) are symmetrically arranged on the left and right sides of the collection chamber (51), comprising cleaning wheels (81), a telescopic mechanism (82) and a rotary drive mechanism (83), and are used to sweep iron filings in the V-grooved opening and closing cover plate (52) into the collection chamber (51).

2. A steel pipe cutting machine for manufacturing shock absorber bushings according to claim 1, characterized in that: The opening and closing control device (6) comprises: A fixed rotating shaft (61), the middle of which is rotatably matched with the lower end of the opening and closing cover plate (52) below, and the two ends of which are respectively fixedly connected to the left and right inner walls of the collecting chamber (51); A pair of inclined guide grooves (62) are symmetrically arranged on the left and right inner walls of the collecting chamber (51), with the lower ends inclined toward the bottom of the lower material trough (2); A movable rotating shaft (63), the middle portion of which is rotatably engaged with the upper end of the opening and closing cover plate (52) above, and the two ends of which are respectively slidably engaged with the corresponding inclined guide grooves (62); The lower end of the opening and closing control cylinder (64) is hinged to the inner wall of the front end of the collecting chamber (51), and the outer end of the piston is hinged to the bottom surface of the opening and closing cover plate (52) below.

3. The steel pipe cutting machine for manufacturing shock absorber bushing according to claim 1, characterized in that: The iron filings adsorption device (7) comprises: A lifting chamber, which is arranged in the opening and closing cover plate (52), with side through grooves (72) at the bottom of both left and right ends, and a plurality of upper through grooves (73) arranged at intervals at the top; A floating plate, which can be lifted and lowered in the lifting chamber by means of a lifting control mechanism (74), and has a plurality of electromagnets (71) disposed on the top; Wherein, each electromagnet (71) is slidably matched with a corresponding upper through slot (73), and each electromagnet (71) can rise until its top surface is flush with the top surface of the corresponding opening and closing cover plate (52); each electromagnet (71) is powered off when descending and powered on when ascending.

4. A steel pipe cutting machine for manufacturing shock absorber bushings according to claim 3, characterized in that: The lifting control mechanism (74) comprises: A pair of slide plates (741) are slidably mounted in the lifting chamber, a plurality of return springs are arranged between adjacent end surfaces, and the top surfaces are both transmission-connected to the bottom surface of the floating plate via a plurality of swing rods (742); A pair of protrusions (743) are respectively fixed on the outer ends of the slide plates (741); A pair of top blocks (744) are symmetrically fixed on the left and right inner walls of the collecting chamber (51), with their top ends inclined.

5. The steel pipe cutting machine for manufacturing shock absorber bushings according to claim 1, characterized in that: The telescopic mechanism (82) comprises: An upper vertical groove (821) disposed on the left inner wall / right inner wall of the collecting chamber (51); A lower vertical groove (822) disposed at the bottom of the upper vertical groove (821), with a lower end flush with the bottom surface of the collection chamber (51); A telescopic frame (9) which is laterally slidably mounted on the bottom of the upper vertical slot (821); A swing arm (823), one end of which is hinged to the outer end of the telescopic frame (9) via a driven rotating shaft (824); A lifting control cylinder (825) is fixedly mounted at the bottom of the lower vertical slot (822), and the top end of the cylinder is hingedly connected to the top end of the swing arm (823) via an active rotating shaft (826); Wherein, the cleaning wheel (81) is mounted on the driven rotating shaft (824).

6. A steel pipe cutting machine for manufacturing shock absorber bushings according to claim 5, characterized in that: The telescopic frame (9) comprises: An outer sliding frame (91) is transversely slidably mounted on the bottom of the upper vertical groove (821); An inner sliding frame (92) which is laterally slidably mounted in the outer sliding frame (91); A plurality of transverse sliding grooves, respectively arranged on the inner walls of opposite sides of the upper vertical groove (821) and the outer sliding frame (91); A plurality of horizontal sliding blocks (93) are respectively arranged on the outer walls of both sides of the outer sliding frame (91) and the inner sliding frame (92); Wherein, notches are provided on the bottom surfaces at both inner and outer ends of the outer sliding frame (91) and the inner sliding frame (92).

7. The steel pipe cutting machine for manufacturing shock absorber bushings according to claim 5, characterized in that: The rotary drive mechanism (83) comprises: A pair of side grooves (831) are arranged on the inner wall of the collecting chamber (51), respectively located on both sides of the upper vertical groove (821), and both are connected to the upper vertical groove (821) through a long through groove; A pair of racks (832) are respectively arranged on the inner end surfaces of the side grooves (831); A pair of gears (833) are respectively fixedly mounted on both ends of the driving shaft (826) and mesh with corresponding racks (832).

8. The steel pipe cutting machine for manufacturing shock absorber bushings according to claim 7, characterized in that: The rotary drive mechanism (83) further comprises: A pair of pulleys (834) are respectively fixed on the driven rotating shaft (824) and the driving rotating shaft (826); A transmission belt (835) is mounted on a pair of pulleys (834).

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