Drum chipper knife roll with blade convenient to replace

Abstract

The utility model relates to the technical field of wood processing equipment, in particular to a drum chipper knife roll with blades convenient to replace, which comprises a drum wheel and a plurality of blades. A plurality of mounting grooves are formed in the periphery of the drum wheel in a circumferential array mode, sinking grooves are formed in the side walls of the mounting grooves, one ends of springs are connected into the sinking grooves, and the other ends of the springs are connected with limiting rods; a cutter groove is formed between the partition plate and the side wall of the mounting groove; the blades are inserted into the blade grooves in a one-to-one correspondence mode, each blade is provided with a limiting hole and a strip-shaped opening which are communicated, the width of each strip-shaped opening is smaller than the diameter of the corresponding limiting hole, and the end, away from the corresponding limiting hole, of each strip-shaped opening is communicated with the lower edge of the corresponding blade; when the spring is in a natural state, one end of the limiting rod penetrates through the partition plate and is clamped in the limiting hole, and the other end of the limiting rod is inserted into the sinking groove. The fly cutter can solve the problems that the fly cutter of the drum chipper cutter roll wastes time and labor and is not efficient enough.

Description

TECHNICAL FIELD

[0001] The utility model relates to wood processing equipment technical field, concretely relates to a drum chipper knife roll convenient to replace blade. BACKGROUND

[0002] The drum chipper is a commonly used mechanical equipment in the wood processing industry, which mainly cuts the wood raw material by the high-speed rotating knife roll driving the blade. In the production of artificial board, the drum chipper is used to process wood into wood chips, and these wood chips can be made into plywood, shaving board, fiber board and other artificial board materials through subsequent drying, gluing, hot pressing and other processes. During the process of wood chipping, the flying knife rotates at high speed under the driving of the knife roll. Although the flying knife is made of special material and is quenched, the blade tip will still be curled and bent after running for 4-8 hours. Therefore, the flying knife must be replaced, otherwise the chipping qualification rate will be affected and the wood chips will be too large and thick.

[0003] At present, the flying knife assembly structure on the drum chipper knife roll on the market is that the flying knife is fixed by the fastening bolt through the pressing block and the flying knife fixing seat. During the replacement of the flying knife, the fastening bolt needs to be repeatedly tightened and loosened for installation and disassembly, which consumes a lot of physical energy of the operator and slows down the replacement speed, thereby affecting the chipping operation efficiency and the practical performance needs to be improved. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a drum chipper knife roll convenient to replace blade to solve the problem of time-consuming and laborious flying knife of the drum chipper knife roll and low efficiency.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The drum chipper knife roll convenient to replace blade comprises a drum wheel and a plurality of blades. A plurality of installation grooves are arranged in the circumferential direction of the outer periphery of the drum wheel. A recess is arranged in the side wall of the installation groove. One end of a spring is connected to the recess. The other end of the spring is connected to a limiting rod. A partition plate is arranged in the installation groove. A blade slot is formed between the partition plate and the side wall of the installation groove. A plurality of blades are respectively and correspondingly inserted into the blade slots. A limiting hole and a strip-shaped opening are arranged in each blade in communication. The width of the strip-shaped opening is smaller than the diameter of the limiting hole. The strip-shaped opening is connected to the lower edge of the blade at the end away from the limiting hole. When the spring is in a natural state, one end of the limiting rod penetrates through the partition plate and is clamped in the limiting hole. The other end of the limiting rod is inserted into the recess. A rod with a diameter smaller than the width of the strip-shaped opening is used to completely press the limiting rod into the recess, so that the upward movement of the blade is not limited.

[0007] As a further scheme of the utility model: two limiting holes and strip-shaped openings are symmetrically arranged at both ends of the blade, and the two limiting holes and strip-shaped openings are alternately arranged upward and downward.

[0008] As a further scheme of the utility model: the end face of the limiting rod away from the spring is a concave surface.

[0009] As a further scheme of the utility model: a slanted groove is formed in the bottom wall of the mounting groove and communicates with the inner bottom of the blade groove.

[0010] As a further scheme of the utility model: positioning strips are arranged at both ends of the blade, positioning grooves corresponding to the positioning strips are arranged at both ends of the partition plate, and the positioning grooves can be sleeved on the positioning strips.

[0011] Due to the adoption of the above technical scheme, the utility model has the following beneficial effects:

[0012] The drum-type chipper knife roller provided by the utility model has the advantages that: the limiting holes and strip-shaped openings are arranged on the blade and communicate with the lower edge of the blade, so that when the rod with a diameter smaller than the width of the strip-shaped opening is completely pressed into the sink groove, the blade loses the limiting effect of the limiting rod, the rod can enter the strip-shaped opening downward and move away from the blade along the strip-shaped opening, the upward movement of the blade is not limited, and the blade can be taken out of the blade groove; when the spring is in a natural state, one end of the limiting rod penetrates through the partition plate and is clamped in the limiting hole, and the other end of the limiting rod is inserted into the sink groove, so that the blade can be limited from separating from the blade groove under the action of centrifugal force when the blade rotates at a high speed, and the movement of the blade is limited by the blade groove when wood is chipped, so that the stability of cutting is ensured.

[0013] Compared with the dismounting mode of tightening and loosening the fastening bolt in the prior art, the utility model adopts the mode of pressing and loosening the limiting rod to limit or not limit the blade, so that the fly knife is more time-saving and labor-saving to dismount and assemble, and the chipper operation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0015] Figure 1 The utility model discloses a drum-type chipper knife roller convenient for replacing the blade, which has the advantages that:

[0016] Figure 2 The utility model discloses a drum-type chipper knife roller convenient for replacing the blade, which has the advantages that:Figure 1 Exploded view;

[0017] Figure 3 for Figure 1 Front view of the drum chipper cutter roller for easy blade replacement as described in the embodiment;

[0018] Figure 4 for Figure 3 Cross-sectional view at the blade along the AA direction;

[0019] Figure 5 for Figure 1 Front view of the blade described in the embodiment;

[0020] Figure 6 for Figure 1 A perspective view of the drum chipper's blade roller, which facilitates blade replacement, during disassembly and assembly, as described in the embodiment.

[0021] The correspondence between the labels and component names in the attached figures is as follows:

[0022] 1. Drum wheel; 11. Mounting groove; 12. Sinking groove; 13. Inclined groove; 2. Blade; 21. Limiting hole; 22. Strip opening; 23. Positioning strip; 31. Spring; 32. Limiting rod; 4. Partition plate; 41. Positioning groove; 5. Rod; 51. Square frame; 52. Handle. Detailed Implementation

[0023] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the following description is to be considered exemplary in nature and not restrictive.

[0024] Please refer to Figures 1-6 In one embodiment of the drum chipper cutter roller of this utility model, which facilitates the replacement of blades 2, the drum chipper cutter roller includes a drum 1 and four blades 2:

[0025] The drum 1 is provided with four mounting grooves 11 in the outer circumferential direction, the side wall of the mounting groove 11 is provided with a recess 12, one end of the spring 31 is fixedly connected in the recess 12, and the other end of the spring 31 is fixedly connected with a limiting rod 32; a partition plate 4 is welded in the mounting groove 11, and a knife groove is formed between the partition plate 4 and the side wall of the mounting groove 11; four knife blades 2 are correspondingly inserted in the knife grooves, the limiting hole 21 and the strip-shaped hole 22 are provided on each knife blade 2 and are in communication, the width of the strip-shaped hole 22 is smaller than the diameter of the limiting hole 21, and the end of the strip-shaped hole 22 away from the limiting hole 21 is in communication with the lower edge of the knife blade 2; when the spring 31 is in a natural state, the one end of the limiting rod 32 penetrates through the partition plate 4 and is clamped in the limiting hole 21, and the other end of the limiting rod 32 is inserted in the recess 12, so that the knife blade 2 is limited from being separated from the knife groove under the action of centrifugal force when the knife blade 2 rotates at a high speed, and the movement of the knife blade 2 is limited by the knife groove when the wood is being cut, so that the stability of cutting is ensured.

[0026] When the knife blade 2 is disassembled, the limiting rod 32 is completely pressed into the recess 12 by the rod 5 with a diameter smaller than the width of the strip-shaped hole 22, so that the limiting effect of the limiting rod 32 on the knife blade 2 is lost, and the rod 5 can enter the strip-shaped hole 22 from the limiting hole 21 and move along the strip-shaped hole 22 to separate from the knife blade 2, so that the upward movement of the knife blade 2 is not limited, and the knife blade 2 can be taken out of the knife groove.

[0027] As a preferred embodiment, as shown in Figure 5 , two limiting holes 21 and strip-shaped holes 22 are symmetrically arranged at the two ends of the knife blade 2, and the two limiting holes 21 and strip-shaped holes 22 are alternately arranged in an up-down manner, one of the strip-shaped holes 22 is in communication with the two limiting holes 21, and the other strip-shaped hole 22 is in communication with the lower limiting hole 21 and the lower edge of the knife blade 2, a plurality of limiting holes 21 are used for limiting, and the symmetric distribution can improve the limiting effect on the knife blade 2.

[0028] On this basis, as shown in Figure 6 , in order to facilitate pressing the plurality of limiting rods 32, a square frame 51 can be used to fixedly connect the plurality of limiting rods 32 on the same plane, and a handle 52 is fixedly connected in the middle of the square frame 51, so that the handle 52 can control the plurality of limiting rods 32 to press the corresponding limiting rods 32 at the same time.

[0029] As a preferred embodiment, as shown in Figure 4 , the end face of the limiting rod 32 away from the spring 31 can be provided as a concave surface, so that the rod 5 is more easily aligned with the limiting rod 32 under the guidance of the concave surface, and is not easily separated from the limiting rod 32 in the process of pressing the limiting rod 32.

[0030] As a preferred embodiment, as shown in Figure 1 and Figure 2As shown, considering the shorter part of the blade 2 exposed to the knife groove, even if not limited by the limiting rod 32, it is not easy to take out the blade 2; based on this, a chute 13 can be opened in the middle position of the bottom wall of the installation groove 11, the deeper end of the chute 13 is communicated with the bottom of the knife groove on one side of the partition plate 4, and the shallow end of the chute 13 is located on the other side of the partition plate 4, so that the shallow end of the chute 13 is used as a fulcrum, and the blade 2 is pried out of the knife groove by using an L-shaped crowbar or other tools.

[0031] As a preferred embodiment, as shown in Figure 1 and Figure 2 As shown, a positioning strip 23 extending upward and downward can be integrally connected at both ends of the blade 2, and a positioning groove 41 corresponding in shape and size to the positioning strip 23 can be opened at both ends of the partition plate 4, and the positioning groove 41 can be sleeved on the positioning strip 23 when the blade 2 is placed in the knife groove, thereby improving the limiting effect of the left and right movement of the blade 2.

[0032] The use method or working principle of the utility model is as follows:

[0033] The utility model under the drive of drum type chipper carries out the chip of wood, when the blade 2 produces roll blade and bounce blade and needs to be replaced in this process, first stop the rotation of drum 1, then press limiting rod 32 using rod 5 with diameter less than the width of strip-shaped mouth 22, until limiting rod 32 enters sunken groove 12 completely, at this time, the blade 2 loses the limiting action of limiting rod 32, and because the diameter of rod 5 is less than the width of strip-shaped mouth 22, rod 5 can enter strip-shaped mouth 22 from limiting hole 21 downward and move along strip-shaped mouth 22 to separate from the blade 2, that is to say, rod 5 will not limit the upward movement of the blade 2;Then insert L-shaped crowbar or other tools into chute 13, and pry the blade 2 out of the knife groove with the shallow end of the chute 13 as the fulcrum, take out the damaged blade 2 and put in new blade 2, finally loosen rod 5 to make limiting rod 32 restore the original state under the elastic force of spring 31, that is, one end penetrates partition plate 4 and is clamped in limiting hole 21, and the other end is inserted into sunken groove 12, so that the blade 2 can be limited to separate from the knife groove under the action of centrifugal force when the blade 2 rotates at high speed, and at the same time, the movement of the blade 2 is limited by the knife groove when the wood is chipped to ensure the stability of cutting.

[0034] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. Drum chipper knife roll facilitating the exchange of the knives (2), characterized in that The utility model provides a cutting device, including drum (1) and a plurality of blades (2), drum (1) is provided with a plurality of installation groove (11) in the outer circumferential circumference array, the side wall of installation groove (11) is provided with sunken groove (12), one end of spring (31) is connected in sunken groove (12), the other end of spring (31) is connected with limiting rod (32), installation groove (11) is equipped with baffle (4), and the knife slot is formed between baffle (4) and the side wall of installation groove (11), a plurality of blades (2) are respectively inserted in the knife slot one by one, and the limiting hole (21) and strip mouth (22) that are connected are set up on each blade (2), the width of strip mouth (22) is less than the diameter of limiting hole (21), and the one end of strip mouth (22) away from limiting hole (21) is connected with the lower edge of blade (2), when spring (31) is in natural state, the one end of limiting rod (32) penetrates baffle (4) and is clamped in limiting hole (21), and the other end of limiting rod (32) is inserted in sunken groove (12), limiting rod (32) is completely pressed into sunken groove (12) through the rod member (5) of the diameter less than the width of strip mouth (22), so that the upward movement of blade (2) is not restricted.

2. Drum chipper knife roller with easy exchangeable knives (2) according to claim 1, characterized in that Two limiting holes (21) and strip mouths (22) are respectively arranged symmetrically at both ends of the blade (2), and the two limiting holes (21) and strip mouths (22) are alternately arranged up and down.

3. Drum chipper knife roller with easy exchangeable knives (2) according to claim 1, characterized in that The end of the limiting rod (32) away from the spring (31) is concave.

4. Drum chipper knife roller with easy exchangeable knives (2) according to claim 1, characterized in that The bottom wall of the installation groove (11) is provided with an inclined groove (13) communicating with the bottom of the knife slot.

5. A drum chipper knife roll facilitating replacement of the knives (2) according to claim 1, characterized in that The blade (2) is provided with a positioning strip (23) at both ends, and the baffle (4) is provided with a positioning groove (41) corresponding to the positioning strip (23) at both ends, and the positioning groove (41) can be sleeved on the positioning strip (23).

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