Scrap iron overhead prevention device of single-shaft scrap iron crusher

Abstract

The utility model discloses a scrap iron overhead prevention device of a single-shaft scrap iron crusher, which comprises a push pawl, a support, a screw rod joint nut column, a limit block, a guide rail, a cylinder piston rod, a cylinder, an electromagnetic directional valve and the like, and the cylinder piston rod pushes the push pawl to press bulk scrap iron downwards to a cutter head of the crusher, so that the bulk scrap iron is crushed. The device is simple in structure and convenient to maintain, can solve the problem that the lump scrap iron is suspended in the single-shaft crusher, saves the time of manual shutdown treatment due to the suspension of the scrap iron, improves the efficiency, and also ensures the safety.

Description

Technical Field

[0001] The utility model relates to the field of machining, in particular to the field of iron chip processing in machining. Background Art

[0002] The iron chips generated during the machining process take up storage space, and the iron chips are easily oxidized and rusted when exposed to the air for a long time. The new treatment method is to centrally process the iron chips, crush them, dry them, and press them into blocks. The iron chip crusher is a professional machine that processes large-sized metal chips to the required size.

[0003] Iron chip crushers are divided into single-axis iron chip crushers and double-axis iron chip crushers. Double-axis iron chip crushers have double-axis cutter discs that rotate in opposite directions. When iron chips fall into the crusher, they will be engaged by the double-axis cutter discs, which will automatically pull the iron chips to feed and complete the crushing action. The single-axis iron chip crusher adopts a "single-axis motor + reducer" drive design. It is usually used for fine crushing of long, rolled, and lumped iron chips. When the hardness is relatively high or the spherical and lumpy iron chips enter the hopper of the single-axis crusher, the lumpy and spherical iron chips are in a fluffy state. Since there is only one crushing cutter disc, sometimes the iron chips will be suspended above the crushing cutter disc and cannot fall on the cutter disc below the crusher. This causes the cutter disc below to idle, and the lumpy iron chips cannot be crushed. The machine can only be stopped for manual processing, which reduces the processing efficiency. Utility Model Content

[0004] The solution of the utility model is to provide a single-axis iron chip crusher anti-iron chip overhead device, which presses the agglomerated iron chips down to the cutter disc of the crusher, thereby achieving the crushing of the agglomerated iron chips.

[0005] The technical solution adopted by the utility model is an anti-iron chip overhead device for a single-axis iron chip crusher, comprising a push claw, a box body, a hopper, a cylinder, and a bracket, and is characterized in that the hopper is mounted on the box body by screws, the cylinder is fixed to a connecting support by fasteners, the connecting support is welded to the upper end of the hopper, and the push claw, the bracket and the cylinder are all fixed to the inner side of the hopper by the connecting support.

[0006] Preferably, the push claw is welded on the bracket, a screw joint nut column is welded on the back of the bracket, a cylinder piston rod is slidably connected inside the cylinder, a threaded head is provided on the top of the cylinder piston rod, the threaded head and the internal thread of the screw joint nut column are connected, and a locking nut is installed on the outer end of the connected threaded head and the screw joint nut column.

[0007] Preferably, two left and right limit blocks are welded on the bracket, and the limit blocks are slidably connected to guide rails on both sides, and the guide rails are fixed to the inner side of the hopper by fasteners.

[0008] Preferably, a cutter disc is mounted in the box, and fixed knives are fixed on both sides of the cutter disc by screws.

[0009] Preferably, an electromagnetic reversing valve is installed on the outer side of the hopper, and the electromagnetic reversing valve is electrically connected to the cylinder piston rod.

[0010] Preferably, a throttle valve is installed on the electromagnetic reversing valve.

[0011] The beneficial effect of the utility model is that the device operates reliably. Through the coordinated design of the push claw and the cylinder as well as the electromagnetic reversing valve and the throttle valve, the problem of the agglomerated iron filings being suspended in the single-shaft crusher is solved, thereby saving the time required for manual shutdown due to the suspended iron filings, thereby improving efficiency and ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the appearance of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the push claw part of the utility model;

[0015] Figure 4 It is a working schematic diagram of the utility model;

[0016] Explanation of the numbers in the figure: 1. Push claw; 2. Bracket; 3. Cylinder piston rod; 4. Cylinder; 5. Hopper; 6. Solenoid reversing valve; 7. Cutter disc; 8. Box body; 9. Connecting support; 10. Guide rail; 11. Limit block; 12. Fixed knife; 13. Lump iron filings; 14. Nut column; 15. Locking nut.

[0017] The above drawings are only used to schematically illustrate and explain the utility model, and do not limit the scope of the utility model. DETAILED DESCRIPTION

[0018] The specific implementation of this utility model is further described in conjunction with the drawings and embodiments.

[0019] A device for preventing iron chips from being lifted off a uniaxial iron chip crusher comprises a push claw 1, a housing 8, a hopper 5 and a cylinder 4. The hopper 5 is mounted on the housing 8 by screws. The push claw 1 is welded to a bracket 2. A screw joint nut column 14 is welded to the back of the bracket 2. Left and right limit blocks 11 are welded to the bracket 2. The limit blocks 11 are slidably connected to guide rails 10 on both sides. The guide rails 10 are fixed to the inner side of the hopper 5 by fasteners. A cylinder piston rod 3 is slidably connected to the inside of the cylinder 4. A threaded head is provided at the top end of the cylinder piston rod 3. The threaded head is connected to the internal thread of the screw joint nut column 14. A locking nut 15 is installed at the outer end of the connected threaded head and the screw joint nut column 14. The cylinder 4 is fixed to a connecting support 9 by fasteners. The connecting support 9 is welded to the upper end of the hopper 5. The push claw 1, the bracket 2 and the cylinder 4 are all fixed to the inner side of the hopper 5 through the connecting support 9, a cutter disc 7 is mounted in the box body 8, fixed knives 12 are fixed on both sides of the cutter disc 7 by screws, an electromagnetic reversing valve 6 is installed on the outer side of the hopper 5, the electromagnetic reversing valve 6 is electrically connected to the cylinder piston rod 3, and a throttle valve is installed on the electromagnetic reversing valve 6.

[0020] The front end of the device is provided with five push claws 1, and the front end of the push claws 1 is arc-shaped, which is consistent with the outer arc of the cutter disc 7, and can better fit the iron filings when pressed down. The push claws 1 are evenly welded on the bracket 2 at certain intervals, and the back of the bracket 2 is welded with the screw joint nut column 14, and the internal thread of the screw joint nut column 14 is M20. The cylinder 4 is connected to the cylinder piston rod 3, and the top of the cylinder piston rod 3 is an M20 threaded head. The threaded head is connected to the internal thread of the screw joint nut column 14, and the bracket 2 and the cylinder piston rod 3 are connected together. The outer end is locked with the locking nut 15 to prevent loosening. The cylinder 4 is fixed to the connecting support 9 by fasteners, and the connecting support 9 is welded to the upper end of the hopper 5. Therefore, the push claw 1, the bracket 2, and the cylinder 4 are all fixed to the inner side of the hopper 5 by the connecting support 9. Two left and right limit blocks 11 are welded on the bracket 2. The limit blocks 11 are slidably connected to the guide rails 10 on both sides. The guide rails 10 are fixed to the inner side of the hopper 5 by fasteners. The limit blocks 11 cooperate with the guide rails 10 on both sides. When the push claw 1 moves up and down, it will drive the limit blocks 11 to slide along the guide rails 10. The guide rails 10 limit the left and right displacement of the push claw 1. The maximum downward pressure position of the push claw 1 has a certain distance from the cutter disc 7 to prevent excessive elongation from interfering with the cutter disc 7.

[0021] During operation, the push claw 1 installed on the inner side of the hopper 5 will be extended and retracted up and down along the guide rail 10 under the extension and retraction drive of the cylinder piston rod 3. When the lump iron filings 13 enter the hopper 5, the iron filings are in a fluffy state, and sometimes they will be suspended on the hopper 5 of the crusher and cannot fall onto the cutter disc 7 at the bottom. Driven by the cylinder piston rod 3, the push claw 1 will press down the lump iron filings 13 suspended on the upper part of the hopper 5 along the guide rail 10, compact the fluffy iron filings with a certain thrust, and press the iron filings down to the position of the cutter disc 7. The rotating cutter disc 7 cooperates with the fixed knife 12 in the box body 8 to complete the extrusion and shredding of the lump iron filings 13.

[0022] The electromagnetic reversing valve 6 is installed on the outside of the hopper 5. The extension and retraction of the cylinder piston rod 3 is controlled by the electromagnetic reversing valve 6. The duration of pressing down, pausing and retracting can be set through PLC. A throttle valve is installed on the electromagnetic reversing valve 6. The throttle valve is connected to an external gas source and can adjust the pressure and flow of the gas, thereby controlling the pressing pressure of the push claw 1. The operation of the pulverizer and the anti-overhead device can be controlled by a separate electric control box, or it can be connected to the PLC system of the machine tool to achieve linkage control.

[0023] The device operates reliably and solves the problem of the agglomerated iron filings 13 being suspended in the single-shaft crusher, thereby saving the time required for manual downtime processing due to the suspended iron filings, thereby improving efficiency and ensuring safety.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for preventing iron chips from being lifted off a uniaxial iron chip crusher, comprising a push claw (1), a box (8), a hopper (5), a cylinder (4), and a bracket (2), characterized in that: The hopper (5) is mounted on the box body (8) by means of screws, the cylinder (4) is fixed on a connecting support (9) by means of fasteners, the connecting support (9) is welded to the upper end of the hopper (5), and the push claw (1), the bracket (2) and the cylinder (4) are all fixed to the inner side of the hopper (5) by means of the connecting support (9).

2. The device for preventing iron chips from being lifted off a single-shaft iron chip crusher according to claim 1, characterized in that: The push claw (1) is welded to the bracket (2); a screw joint nut column (14) is welded to the back of the bracket (2); a cylinder piston rod (3) is slidably connected inside the cylinder (4); a threaded head is provided at the top end of the cylinder piston rod (3); the threaded head is connected to the internal thread of the screw joint nut column (14); and a locking nut (15) is installed at the outer end of the connected threaded head and the screw joint nut column (14).

3. The device for preventing iron chips from being lifted off a single-shaft iron chip crusher according to claim 1, characterized in that: Two left and right limit blocks (11) are welded to the bracket (2); the limit blocks (11) are slidably connected to guide rails (10) on both sides; and the guide rails (10) are fixed to the inner side of the hopper (5) via fasteners.

4. The device for preventing iron chips from being lifted off a single-shaft iron chip crusher according to claim 1, characterized in that: A cutter disc (7) is mounted inside the box body (8), and fixed knives (12) are fixed on both sides of the cutter disc (7) by screws.

5. The device for preventing iron chips from being lifted off a single-shaft iron chip crusher according to claim 2, characterized in that: An electromagnetic reversing valve (6) is installed on the outer side of the hopper (5), and the electromagnetic reversing valve (6) is electrically connected to the cylinder piston rod (3).

6. The device for preventing iron chips from being lifted off a single-shaft iron chip crusher according to claim 5, characterized in that: A throttle valve is installed on the electromagnetic reversing valve (6).

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