Spiral steel cutter shaft

Abstract

The utility model discloses a spiral steel cutter shaft which comprises a connecting shaft, the bottom of the connecting shaft is integrally and fixedly connected with a connecting cylinder, the interior of the connecting cylinder is detachably connected with a first shaft rod, the bottom of the first shaft rod is fixedly connected with a second shaft rod, and the bottom of the second shaft rod is integrally and fixedly connected with a cutter holder. When the tool apron needs to be replaced, only a limiting bolt needs to be loosened, then a second shaft rod is rotated clockwise, the second shaft rod drives a threaded hole to slide on the inner surface of a second guide groove, after the second shaft rod slides to the position of a first guide groove, a protruding block on the top of a first shaft rod is ejected open through the elastic design of a limiting structure, and then the tool apron is replaced. When a new tool apron is installed, a guide block is inserted into the connecting cylinder through a guide groove I, a convex block is limited through a limiting structure, then a shaft rod II is rotated anticlockwise to enable the guide block to slide on the inner surface of a guide groove II, so that a threaded hole corresponds to a limiting bolt, and the tool apron is installed. And the limiting bolt is rotated for fastening.

Description

Technical Field

[0001] The utility model belongs to the technical field of knife shafts, in particular to a spiral steel knife shaft. Background Art

[0002] The spiral cutter shaft is a shaft rod for connecting a spiral blade. The existing spiral cutter shaft and the cutter seat are generally fixedly connected by welding or by a plurality of screws on a connecting plate.

[0003] When the knife seat connected to the bottom of the knife shaft is damaged and needs to be replaced, the existing two types of connection are inconvenient to disassemble or install, which increases the difficulty of the replacement operation and the cumbersomeness of the replacement. Utility Model Content

[0004] The utility model aims to provide a spiral steel body knife shaft, which is convenient for disassembly and assembly of the knife seat, thereby achieving the purpose of convenient replacement, so as to solve the above-mentioned background technical problems.

[0005] The utility model solves the above technical problems with the following technical solutions: a spiral steel body knife shaft, comprising a connecting shaft, the bottom of the connecting shaft is integrally fixedly connected to a connecting cylinder, the interior of the connecting cylinder is detachably connected to a shaft rod 1, the bottom of the shaft rod 1 is fixedly connected to a shaft rod 2, the bottom of the shaft rod 2 is integrally fixedly connected to a knife seat, both sides of the surface of the shaft rod 1 are fixedly connected to guide blocks, the outer side of the surface of the guide block is provided with a threaded hole, both sides of the inner cavity of the connecting cylinder are vertically provided with a guide groove 1, the end surface of the inner surface of the guide groove 1 is annularly provided with a guide groove 2, the The guide groove 2 and the guide groove 1 are connected to each other at a 90-degree angle, and the guide groove 2 is symmetrically arranged with respect to the axis center of the connecting tube. After the threaded hole slides vertically on the inner surface of the guide groove 1, it rotates counterclockwise and is slidably connected with the inner surface of the guide groove 2. The inner surface of the threaded hole is threadedly connected to a limiting bolt, and the outer side of the limiting bolt passes through the connecting tube and extends to the outside of the connecting tube. An inner hole is opened at the axis center of the top of the inner cavity of the connecting tube, and a limiting structure for limiting the position of the shaft rod 1 is arranged in the inner cavity of the inner hole, and a protrusion corresponding to the limiting structure is fixedly connected to the top of the shaft rod 1.

[0006] Preferably, the limiting structure includes a spring welded to the top of the inner cavity of the inner hole, the bottom of the spring is fixedly connected with a connecting plate, the initial position of the connecting plate is located on the inner surface of the inner hole, and the outer surface of the connecting plate is slidably connected to the inner surface of the inner hole.

[0007] Preferably, the diameter of the protrusion is smaller than the diameter of the inner hole, and the top of the protrusion fits tightly with the bottom of the connecting plate.

[0008] Preferably, a through hole is provided on the surface of the connecting tube at a position corresponding to the threaded hole, and the limiting bolt passes through the through hole and is threadedly connected to the inner surface of the threaded hole.

[0009] Preferably, the surface of the knife seat is spirally connected to the blade by means of a mounting screw, and the rotating handle of the screw is designed in the shape of an inner plum blossom.

[0010] 1. The beneficial effect of the utility model is that when the knife holder needs to be replaced, it is only necessary to loosen the limiting bolt to loosen the limiting bolt, and then rotate the shaft rod two clockwise to make the shaft rod two drive the threaded hole to slide on the inner surface of the guide groove two. When sliding to the position of the guide groove one, the elastic design of the limiting structure is used to push open the convex block on the top of the shaft rod one, so that the shaft rod one leaves the inner surface of the connecting tube. When installing a new knife holder, it is only necessary to insert the guide block into the interior of the connecting tube through the guide groove one, and at the same time limit the convex block through the limiting structure, and then rotate the shaft rod two counterclockwise to make the guide block slide on the inner surface of the guide groove two, so that the threaded hole corresponds to the limiting bolt, and the limiting bolt is rotated to tighten it, thereby facilitating the disassembly and assembly of the knife holder and achieving the purpose of convenient replacement.

[0011] 2. The utility model can limit the top of the shaft rod 1 during installation by arranging the spring and the connecting plate, and can conveniently pop out the shaft rod 1 during disassembly.

[0012] 3. The utility model can facilitate the insertion or exit of the limit bolt by providing a through hole.

[0013] 4. The utility model is fixedly connected with a blade by arranging mounting screws. When the blade is damaged, the blade can be conveniently disassembled and assembled, thereby achieving the effect of timely replacement of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] in:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the guide groove 1 and the guide groove 2 of the utility model;

[0017] Figure 3 It is a schematic diagram of the disassembly of the structure of the utility model.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Connecting shaft; 2. Connecting tube; 3. Shaft rod 1; 4. Shaft rod 2; 5. Knife holder; 6. Guide block; 7. Threaded hole; 8. Guide groove 1; 9. Guide groove 2; 10. Limit bolt; 11. Inner hole; 12. Spring; 13. Connecting plate; 14. Bump; 15. Through hole; 16. Knife blade. DETAILED DESCRIPTION

[0020] Hereinafter, embodiments of the spiral steel body cutter shaft of the present invention will be described with reference to the accompanying drawings.

[0021] Embodiment 1:

[0022] Figure 1-3A spiral steel blade shaft of an embodiment of the utility model is shown, comprising a connecting shaft 1, a connecting cylinder 2 is integrally fixedly connected to the bottom of the connecting shaft 1, a shaft rod 3 is detachably connected to the interior of the connecting cylinder 2, a shaft rod 4 is fixedly connected to the bottom of the shaft rod 3, a blade holder 5 is integrally fixedly connected to the bottom of the shaft rod 4, guide blocks 6 are fixedly connected to the surface of the shaft rod 3 on both sides, threaded holes 7 are provided on the outer side of the surface of the guide block 6, guide grooves 8 are vertically provided on both sides of the inner cavity of the connecting cylinder 2, guide grooves 9 are provided in an annular shape on the end surface of the inner surface of the guide grooves 8, guide grooves 9 and guide grooves 8 are connected to each other at 90 degrees, and guide grooves 9 The connecting tube 2 is symmetrically arranged at the axis center. After the threaded hole 7 slides vertically on the inner surface of the guide groove 8, it rotates counterclockwise and is slidably connected with the inner surface of the guide groove 9. The inner surface of the threaded hole 7 is threadedly connected with a limiting bolt 10. The outer side of the limiting bolt 10 penetrates the connecting tube 2 and extends to the outer side of the connecting tube 2. An inner hole 11 is opened at the axis center of the top of the inner cavity of the connecting tube 2. The inner cavity of the inner hole 11 is provided with a limiting structure for the position of the limiting shaft rod 3. The limiting structure includes a spring 12 welded to the top of the inner cavity of the inner hole 11. The bottom of the spring 12 is fixedly connected with a connecting plate 13. The initial position of the connecting plate 13 is located at the inner hole 11. The inner surface of the connecting plate 13 is slidably connected to the inner surface of the inner hole 11. The diameter of the protrusion 14 is smaller than the diameter of the inner hole 11. The top of the protrusion 14 fits tightly with the bottom of the connecting plate 13. By setting the spring 12 and the connecting plate 13, the top of the shaft rod 3 can be limited during installation. When disassembly, the shaft rod 3 can be easily popped out. The top of the shaft rod 3 is fixedly connected with a protrusion 14 corresponding to the limiting structure. When the knife seat 5 needs to be replaced, it is only necessary to loosen the limiting bolt 10 to loosen the limiting bolt 10, and then rotate the shaft rod 2 4 clockwise so that the shaft rod 2 4 drives the threaded hole 7 in the guide groove 2 9, and when it slides to the position of the guide groove 8, the elastic design of the limiting structure is used to push open the protrusion 14 on the top of the shaft rod 3, so that the shaft rod 3 leaves the inner surface of the connecting tube 2. When installing a new tool holder 5, it is only necessary to insert the guide block 6 into the interior of the connecting tube 2 through the guide groove 8, and at the same time limit the protrusion 14 through the limiting structure, and then rotate the shaft rod 4 counterclockwise to make the guide block 6 slide on the inner surface of the guide groove 9, so that the threaded hole 7 corresponds to the limiting bolt 10, and the limiting bolt 10 is rotated to tighten it, thereby facilitating the disassembly and assembly of the tool holder and achieving the purpose of convenient replacement.

[0023] Embodiment 2:

[0024] Figure 1-3The utility model shows a spiral steel body knife shaft of an embodiment of the utility model, including a connecting shaft 1, the bottom of the connecting shaft 1 is integrally fixedly connected with a connecting tube 2, the interior of the connecting tube 2 is detachably connected with a shaft rod 3, the bottom of the shaft rod 3 is fixedly connected with a shaft rod 2 4, the bottom of the shaft rod 2 4 is integrally fixedly connected with a knife seat 5, the surface of the knife seat 5 is spirally fixedly connected with a blade 16 by installing screws, and the rotating handle of the screw is designed as an inner plum blossom shape, and the blade 16 is fixedly connected by setting the installing screws. When the blade 16 is damaged, the blade 16 can be conveniently disassembled and assembled, which plays a role in timely replacement of the blade 16, both sides of the surface of the shaft rod 3 are fixedly connected with guide blocks 6, the outer side of the surface of the guide block 6 is provided with threaded holes 7, both sides of the inner cavity of the connecting tube 2 are vertically provided with guide grooves 8, and the end surface of the inner surface of the guide groove 8 is annularly provided with guide grooves 2 9, and the guide The groove 29 and the guide groove 18 are connected to each other at a 90-degree angle. The guide groove 29 is symmetrically arranged with respect to the axis of the connecting tube 2. After the threaded hole 7 slides vertically on the inner surface of the guide groove 18, it rotates counterclockwise and is slidably connected with the inner surface of the guide groove 29. The inner surface of the threaded hole 7 is threadedly connected with a limiting bolt 10. A through hole 15 is provided on the surface of the connecting tube 2 at a position corresponding to the threaded hole 7. The limiting bolt 10 passes through the through hole 15 and is threadedly connected with the inner surface of the threaded hole 7. By providing the through hole 15, the limiting bolt 10 can be easily inserted or exited. The outer side of the limiting bolt 10 passes through the connecting tube 2 and extends to the outer side of the connecting tube 2. An inner hole 11 is provided at the axis center of the top of the inner cavity of the connecting tube 2. A limiting structure for limiting the position of the shaft rod 3 is provided in the inner cavity of the inner hole 11. A protrusion 14 corresponding to the limiting structure is fixedly connected to the top of the shaft rod 3.

[0025] Working principle: When the utility model is used, when it is necessary to replace the knife holder 5, it is only necessary to loosen the limit bolt 10 to loosen the limit bolt 10, and then rotate the shaft rod 2 4 clockwise to make the shaft rod 2 4 drive the threaded hole 7 to slide on the inner surface of the guide groove 2 9. When sliding to the position of the guide groove 1 8, the elastic design of the connecting plate 13 is popped out by the spring 12, so that it pushes open the convex block 14 on the top of the shaft rod 3, so that the shaft rod 3 leaves the inner surface of the connecting tube 2. When installing a new knife holder 5, it is only necessary to insert the guide block 6 into the interior of the connecting tube 2 through the guide groove 1 8, and at the same time limit the convex block 14 through the connecting plate 13, and then rotate the shaft rod 2 4 counterclockwise to make the guide block 6 slide on the inner surface of the guide groove 2 9, so that the threaded hole 7 corresponds to the limit bolt 10, and rotate the limit bolt 10 to tighten it, and it is threadedly connected with the inner surface of the threaded hole 7, thereby facilitating the disassembly and assembly of the knife holder and achieving the purpose of convenient replacement.

Claims

1. A spiral steel blade shaft, comprising a connecting shaft (1), the bottom of the connecting shaft (1) is integrally fixedly connected to a connecting tube (2), the interior of the connecting tube (2) is detachably connected to a shaft rod (3), the bottom of the shaft rod (3) is fixedly connected to a shaft rod (4), the bottom of the shaft rod (4) is integrally fixedly connected to a blade holder (5), characterized in that: Guide blocks (6) are fixedly connected to both sides of the surface of the shaft rod (3), and threaded holes (7) are provided on the outer sides of the surface of the guide blocks (6). Guide grooves (8) are vertically provided on both sides of the inner cavity of the connecting tube (2), and guide grooves (9) are provided in an annular shape on the end surface of the inner surface of the guide groove (8). The guide grooves (9) and (8) are connected to each other at a 90-degree angle, and the guide grooves (9) are centrally symmetrically arranged with respect to the axis of the connecting tube (2). The threaded holes (7) are provided in the inner side of the guide grooves (8). After the surface slides vertically, it rotates counterclockwise and is slidably connected to the inner surface of the guide groove 2 (9). The inner surface of the threaded hole (7) is threadedly connected to a limit bolt (10). The outer side of the limit bolt (10) passes through the connecting tube (2) and extends to the outer side of the connecting tube (2). An inner hole (11) is opened at the axial center of the top of the inner cavity of the connecting tube (2). The inner cavity of the inner hole (11) is provided with a limit structure for limiting the position of the shaft rod 1 (3). The top of the shaft rod 1 (3) is fixedly connected with a protrusion (14) corresponding to the limit structure.

2. The spiral steel blade shaft according to claim 1, characterized in that: The limiting structure comprises a spring (12) welded to the top of the inner cavity of the inner hole (11); a connecting plate (13) is fixedly connected to the bottom of the spring (12); the initial position of the connecting plate (13) is located on the inner surface of the inner hole (11); and the outer surface of the connecting plate (13) is slidably connected to the inner surface of the inner hole (11).

3. The spiral steel blade shaft according to claim 2, characterized in that: The diameter of the protrusion (14) is smaller than the diameter of the inner hole (11), and the top of the protrusion (14) is tightly fitted with the bottom of the connecting plate (13).

4. The spiral steel blade shaft according to claim 1, characterized in that: A through hole (15) is provided on the surface of the connecting tube (2) at a position corresponding to the threaded hole (7), and the limiting bolt (10) passes through the through hole (15) and is threadedly connected to the inner surface of the threaded hole (7).

5. The spiral steel blade shaft according to claim 1, characterized in that: The surface of the knife seat (5) is spirally connected to a blade (16) via a mounting screw, and the rotating handle of the screw is designed in an inner plum blossom shape.

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