Drum chipper fly cutter with adjusting structure
By designing an adjustment structure on the fly knife of the drum chipper, the problem of misfit caused by the fixed depth of the cutter inlet seat was solved, realizing easy adjustment and observation functions, and improving the cutting quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-04-14
AI Technical Summary
The blade insertion depth of the fly knife in a drum chipper is fixed and cannot be adjusted according to actual needs, resulting in a deviation in the fit between the fly knife and the fixed knife, which affects the cutting effect.
A flying knife with an adjustable structure was designed, including components such as a pre-grooved top, a tool holder connecting block, a positioning plate, countersunk screws, and scale lines, which enables easy adjustment of the tool's insertion depth into the tool holder and observation of its balance.
This design allows for easy adjustment of the tool entry depth, ensuring precise matching between the fly knife and the stationary knife, preventing uneven slicing, and improving cutting quality.
Smart Images
Figure CN224116357U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chipper blade technology, specifically a drum chipper blade with an adjustable structure. Background Technology
[0002] Drum chippers are specialized equipment for producing wood chips. They can cut logs and small-diameter timber into high-quality industrial wood chips with uniform length, smooth cuts, and uniform thickness. They can also cut branches and boards. They are suitable for paper mills, particleboard factories, fiberboard factories, wood chip production bases, and wood chip export bases.
[0003] Drum chippers cut wood primarily through the shearing force generated by the combination of fly cutters and stationary cutters. The fly cutters are mounted on the drum and are generally made of high-strength steel, with plate-shaped blades and slots and screw holes at the head. In actual use, they have some functional shortcomings and room for improvement. For example, the depth of the blade entering the blade holder is fixed, but after the blade is ground and trimmed, the cutting edge moves back, making the original installation position seem too far back. This can easily cause deviations in the fit between the fly cutter and the stationary cutter. The fly cutter cannot be adjusted outwards as needed, and it lacks the function of easily adjusting the depth of the blade entering the blade holder.
[0004] Now, a novel type of drum chipper fly knife with an adjustable structure is proposed to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a drum chipper fly knife with an adjustable structure to solve the problem mentioned in the background art of not having the function of easily adjusting the depth of the cutter inlet.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a drum chipper blade with an adjustable structure, comprising a blade body, a blade edge at the bottom end of the blade body, multiple pre-grooved slots at the top end of the blade body, two blade holder connecting blocks at the top end of the blade body, bolt grooves inside the blade holder connecting blocks, side threaded holes on both sides of the blade body, a fixing rod inserted laterally into the side threaded holes, a plastic handwheel fixedly connected to the end of the fixing rod, multiple scale lines on both sides of the front end of the blade body, multiple sets of numerical markings printed on both sides of the front end of the blade body, and an adjusting component at the top end of the blade body for adjusting the depth of the blade insertion into the blade holder.
[0007] The adjustment assembly includes two sets of positioning plates, which are respectively set on both sides above the main body of the flying knife. Adjustment plates are welded to both sides of the bottom of the positioning plates. Multiple sets of positioning screw holes are opened inside the adjustment plates. Two sets of vertical slots are opened on both sides of the top of the main body of the flying knife. Countersunk screws are inserted into the top of the left and right sides of the main body of the flying knife.
[0008] As a further technical solution of this utility model, the positions and dimensions of the vertical groove and the adjusting plate are in one-to-one correspondence, and the adjusting plate can slide up and down along the inside of the vertical groove.
[0009] As a further technical solution of this utility model, the countersunk screw penetrates the interior of the flying knife body and the adjusting plate, and the outer side of the countersunk screw is flush with the side of the flying knife body.
[0010] As a further technical solution of this utility model, the outer diameter of the countersunk screw and the inner diameter of the positioning screw eye are matched, and the positioning screw eyes are arranged at equal intervals.
[0011] As a further technical solution of this utility model, the outside of the fixing rod is threaded, and the internal thread of the fixing rod matches the internal thread of the side threaded hole.
[0012] As a further technical solution of this utility model, the scale lines and the numerical markings correspond one-to-one, and the scale lines are symmetrically distributed about the vertical center line of the flying knife body.
[0013] Compared with the prior art, the beneficial effects of this utility model are: the fly knife of the drum chipper with the adjustable structure not only realizes the function of facilitating the adjustment of the depth of the blade into the blade holder, but also realizes the function of facilitating the pushing of the blade, and also realizes the function of facilitating the observation of the balance state at both ends;
[0014] (1) By setting up a vertical groove, countersunk screw, positioning plate, adjusting plate and positioning screw hole, when in use, the flying knife body is inserted into the knife holder, the top pre-grooved groove and the rib inside the knife holder are matched, the bolt is driven in from the top of the knife holder, and the bolt groove in the connecting block of the knife holder is passed through to complete the installation. After the blade is ground and trimmed, the exposed part of the blade will be slightly shorter. At this time, it is necessary to readjust the installation depth of the blade. Loosen the countersunk screw and pull it out. Then pull the positioning plate and the adjusting plate out from the vertical groove. After adjusting to the appropriate position, drive the countersunk screw in again. The countersunk screw is inserted into the positioning screw hole, and the position of the positioning plate is fixed. Then insert the blade back into the knife holder for fixation. The positioning plate and adjusting plate compensate for the length of the part of the blade edge that is ground, and realize the function of easily adjusting the depth of the blade into the knife holder.
[0015] (2) With the side internal threaded hole, fixing rod and plastic handwheel, when the flying knife body is pushed into the knife holder, it is inconvenient to push by hand because the cutting edge is facing outward. The fixing rod is screwed in along the side internal threaded hole. The plastic handwheel is easy to turn. As the fixing rod is screwed into the side internal threaded hole, the exposed part of the fixing rod can be grasped to easily push the flying knife body into the knife holder. After the installation is completed, the fixing rod can be loosened and removed, which realizes the function of easy to push the blade in.
[0016] (3) By setting scale lines and numerical markings, when using the knife body, as it is pushed into the knife holder, the positional relationship between the knife holder and the scale lines and numerical markings on both sides can be observed to see if the two sides are horizontal, thus avoiding problems caused by the knife body tilting. The numerical markings are easy to compare and interpret, thus realizing the function of easy observation of the balance state at both ends. Attached Figure Description
[0017] Figure 1 This is a front view structural diagram of the present utility model;
[0018] Figure 2 This is a side view enlarged structural diagram of the main body of the throwing knife of this utility model;
[0019] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;
[0020] Figure 4 This is a front enlarged structural schematic diagram of the fixing rod of this utility model.
[0021] In the diagram: 1. Body of the flying knife; 2. Blade; 3. Vertical groove; 4. Countersunk screw; 5. Positioning plate; 6. Adjusting plate; 7. Positioning screw eye; 8. Side internal threaded hole; 9. Fixing rod; 10. Plastic handwheel; 11. Top pre-grooved slot; 12. Knife holder connecting block; 13. Bolt groove; 14. Scale line; 15. Numerical marking. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Example: Please refer to Figure 1-4A drum chipper blade with an adjustable structure includes a blade body 1, a blade 2 at the bottom end of the blade body 1, multiple sets of top pre-grooves 11 at the top end of the blade body 1, two sets of blade holder connecting blocks 12 at the top end of the blade body 1, bolt grooves 13 inside the blade holder connecting blocks 12, and an adjustment component at the top end of the blade body 1 that can adjust the depth of the blade entering the blade holder.
[0024] Please see Figure 1-4 A drum chipper blade with an adjustable structure also includes an adjustment assembly. The adjustment assembly includes two sets of positioning plates 5, which are respectively set on both sides above the blade body 1. Adjustment plates 6 are welded to both sides of the bottom of the positioning plates 5. Multiple sets of positioning screw holes 7 are opened inside the adjustment plates 6. Two sets of vertical grooves 3 are opened on both sides of the top of the blade body 1. Countersunk screws 4 are inserted into the top of the left and right sides of the blade body 1.
[0025] The vertical groove 3 and the adjusting plate 6 are in one-to-one correspondence in position and size. The adjusting plate 6 can slide up and down along the inside of the vertical groove 3. The countersunk screw 4 passes through the inside of the flying knife body 1 and the adjusting plate 6. The outer side of the countersunk screw 4 is flush with the side of the flying knife body 1. The outer diameter of the countersunk screw 4 is matched with the inner diameter of the positioning screw eye 7. The positioning screw eyes 7 are arranged at equal intervals to facilitate adjustment of the depth of the blade into the tool holder.
[0026] Specifically, such as Figure 1 and Figure 2 As shown, loosen and pull out the countersunk screw 4, then pull the positioning plate 5 and the adjusting plate 6 outward from the vertical groove 3, adjust to the appropriate position, and then drive the countersunk screw 4 back in. The countersunk screw 4 is inserted into the positioning screw hole 7, and the position of the positioning plate 5 is fixed. Then, insert the blade back into the tool holder to fix it. The positioning plate 5 and the adjusting plate 6 compensate for the length of the part of the cutting edge that has been ground.
[0027] The main body 1 of the flying knife has side internal threaded holes 8 on both sides. A fixing rod 9 is horizontally inserted into the side internal threaded hole 8. A plastic handwheel 10 is fixedly connected to the end of the fixing rod 9. The outside of the fixing rod 9 is threaded. The thread inside the fixing rod 9 matches the thread inside the side internal threaded hole 8, which makes it easy to push in the blade.
[0028] Specifically, such as Figure 3 and Figure 4 As shown, screw the fixing rod 9 into the side internal threaded hole 8. The plastic handwheel 10 is easy to screw in. As the fixing rod 9 is screwed into the side internal threaded hole 8, you can easily apply force to push the flying knife body 1 into the knife holder by grasping the exposed part of the fixing rod 9. After the installation is completed, loosen the fixing rod 9 and remove it.
[0029] Multiple sets of scale lines 14 are opened on both sides of the front end of the flying knife body 1, and multiple sets of numerical markings 15 are printed on both sides of the front end of the flying knife body 1. The scale lines 14 and numerical markings 15 correspond one-to-one. The scale lines 14 are symmetrically distributed about the vertical center line of the flying knife body 1, which makes it easy to judge the balance state of the two ends of the blade entering the blade holder.
[0030] Specifically, such as Figure 1 and Figure 3 As shown, observe the positional relationship between the blade holder and the scale lines 14 and the number markings 15 on both sides. Observe whether the two sides are horizontal to avoid problems with the slice caused by the blade tilting. The number markings 15 are convenient for comparison and interpretation.
[0031] Working principle: When using this utility model, firstly, the main body 1 of the flying knife is inserted into the knife holder. The pre-grooved slot 11 at the top cooperates with the rib inside the knife holder. The bolt is driven in from the top of the knife holder, passing through the bolt groove 13 in the connecting block 12 of the knife holder, and the installation is completed. After the blade 2 is ground and trimmed, the exposed part of the blade will be slightly shorter. At this time, it is necessary to readjust the installation depth of the blade. Loosen and pull out the countersunk screw 4. Then, pull the positioning plate 5 and the adjusting plate 6 outward from the vertical groove 3. After adjusting to the appropriate position, drive in the countersunk screw 4 again. The countersunk screw 4 is inserted into the positioning screw hole 7, and the position of the positioning plate 5 is fixed. Then, insert the blade back into the knife holder for fixation. The positioning plate 5 and the adjusting plate 6 compensate for the length of the part of the blade edge that has been ground. When pushing the main body 1 of the flying knife into the knife holder, it is inconvenient to push it by hand because the cutting edge faces outwards. Screw the fixing rod 9 into the internal threaded hole 8 on the side. The plastic handwheel 10 facilitates turning. As the fixing rod 9 is screwed into the internal threaded hole 8, you can easily apply force to push the main body 1 into the knife holder by grasping the exposed part of the fixing rod 9. After installation, loosen and remove the fixing rod 9. As the main body 1 of the flying knife is pushed into the knife holder, you can observe the positional relationship between the knife holder and the scale lines 14 and numerical markings 15 on both sides. Observe whether the two sides are level to avoid problems with slicing due to knife tilt. The numerical markings 15 facilitate comparison and interpretation.
[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A drum chipper blade with an adjustable structure, comprising a blade body (1), characterized in that: The bottom end of the throwing knife body (1) is provided with a blade (2), the top end of the throwing knife body (1) is provided with multiple sets of top pre-cut slots (11), the top end of the throwing knife body (1) is provided with two sets of knife holder connecting blocks (12), the inside of the knife holder connecting block (12) is provided with a bolt groove (13), the sides of the throwing knife body (1) are respectively provided with side internal thread holes (8), the inside of the side internal thread holes (8) is horizontally inserted with a fixing rod (9), the end of the fixing rod (9) is fixedly connected with a plastic handwheel (10), the front end of the throwing knife body (1) is respectively provided with multiple sets of scale lines (14), the front end of the throwing knife body (1) is respectively printed with multiple sets of digital markings (15), the top end of the throwing knife body (1) is provided with an adjustment component that can adjust the depth of the blade entering the knife holder; The adjustment assembly includes two sets of positioning plates (5), which are respectively set on the two sides above the main body of the flying knife (1). Adjustment plates (6) are welded to the two sides of the bottom of the positioning plates (5). Multiple sets of positioning screw holes (7) are opened inside the adjustment plates (6). Two sets of vertical grooves (3) are opened on the two sides of the top of the main body of the flying knife (1). Countersunk screws (4) are inserted into the top of the left and right sides of the main body of the flying knife (1).
2. The fly knife of a drum chipper with an adjustable structure according to claim 1, characterized in that: The vertical groove (3) and the adjusting plate (6) are in one-to-one correspondence in position and size. The adjusting plate (6) can slide up and down along the inside of the vertical groove (3).
3. The fly knife of a drum chipper with an adjustable structure according to claim 1, characterized in that: The countersunk screw (4) penetrates the interior of the flying knife body (1) and the adjusting plate (6), and the outer side of the countersunk screw (4) is flush with the side of the flying knife body (1).
4. The fly knife of a drum chipper with an adjustable structure according to claim 1, characterized in that: The outer diameter of the countersunk screw (4) is matched with the inner diameter of the positioning screw hole (7), and the positioning screw hole (7) is arranged at equal intervals.
5. The fly knife of a drum chipper with an adjustable structure according to claim 1, characterized in that: The fixing rod (9) has threads on its exterior, and the threads on the exterior of the fixing rod (9) match the threads inside the side threaded hole (8).
6. The fly knife of a drum chipper with an adjustable structure according to claim 1, characterized in that: The scale lines (14) and the number markings (15) correspond one-to-one, and the scale lines (14) are symmetrically distributed about the vertical center line of the flying knife body (1).