Wood cutting device

Abstract

The invention discloses a wood cutting device, which relates to the technical field of wood processing, and comprises a driving unit comprising a motor shaft, a chuck arranged on one side of the motor shaft, and a stop assembly arranged between the chuck and the motor shaft. The device has the beneficial effects that when nails on timber are sawed, power can be interrupted in time, the saw blade can be stopped in time, mounting and withdrawing of the saw blade are more time-saving and labor-saving, operation is convenient and fast, it can be guaranteed that the device can quickly enter a rework state, in addition, the risk of tipping can be reduced, and the working efficiency is improved. And the motor, the saw blade and accessory structures can be well protected.

Description

Technical Field

[0001] The invention relates to the technical field of wood processing, in particular to a wood cutting device. Background Art

[0002] In the existing wood sawing process, in addition to logs, recycled wood is also needed. It is usually difficult to completely clean the nails on these recycled woods, especially the nails that are inside the wood and not exposed. When sawing, these unprocessed nails will be directly cut, which will cause the saw blade to get stuck and break, which will not only affect the life of the saw blade, but also bring personal safety hazards due to flying fragments. In addition, the motor and transmission rod will also be damaged due to excessive torque load at this time. Summary of the invention

[0003] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0004] Therefore, the purpose of the present invention is to provide a wood cutting device, which can solve the problem that when the saw blade cuts the nails on the wood, it cannot stop in time, causing equipment damage, the personnel safety problem caused by chipping and flying, and the time-consuming and labor-intensive saw blade replacement problem.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: A wood cutting device, comprising a driving unit, including a motor shaft, a chuck disposed on one side of the motor shaft, and a stop assembly disposed between the chuck and the motor shaft; The chuck and the motor shaft are connected via a stop assembly.

[0006] As a preferred solution of the wood cutting device of the present invention, the chuck includes a driven shaft arranged on one side thereof.

[0007] As a preferred solution of the wood cutting device described in the present invention, the motor shaft includes a spring seat arranged on its outer wall, a cylindrical cavity arranged on the end face of the motor shaft, at least one shuttle-shaped hole penetrating the inner wall of the cylindrical cavity, and a first protrusion arranged on one side of the spring seat.

[0008] As a preferred solution of the wood cutting device of the present invention, the driven shaft includes a column arranged at one end thereof, a first annular groove arranged on the outer wall of the column, and a second protruding column arranged on the outer wall of the driven shaft.

[0009] As a preferred solution of the wood cutting device of the present invention, the stop assembly includes a sleeve, a spring arranged on one side of the sleeve, and a round ball arranged inside the shuttle hole.

[0010] As a preferred solution of the wood cutting device of the present invention, the sleeve includes a T-hole penetrating through the surface thereof, a trapezoidal opening penetrating through one end of the sleeve, and a second annular groove arranged on the inner wall of the sleeve.

[0011] As a preferred solution of the wood cutting device of the present invention, the second annular groove is adjacent to the trapezoidal opening.

[0012] As a preferred solution of the wood cutting device of the present invention, it further includes a motor and a saw blade.

[0013] The beneficial effects of the present invention are as follows: the present invention can interrupt the power in time and stop the saw blade when encountering a nail sawed into the wood. The installation and withdrawal of the saw blade are more time-saving and labor-saving, and the operation is convenient. It can also ensure that the work can be resumed quickly. In addition, the device can reduce the risk of chipping and can provide good protection for the motor, saw blade and auxiliary structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is an overall three-dimensional view of the present invention.

[0016] Figure 2 It is a top view of the present invention.

[0017] Figure 3 It is a partial cross-sectional view of the driving unit of the present invention.

[0018] Figure 4 A supplementary view of the drive unit structure of the present invention.

[0019] In the figure: 1, driving unit; 11, motor shaft; 12, chuck; 13, stop assembly; 121, driven shaft; 111, spring seat; 112, cylindrical cavity; 113, shuttle hole; 114, first boss; 1211, column; 1212, first annular groove; 1213, second boss; 131, sleeve; 132, spring; 133, ball; 1311, T-hole; 1312, trapezoidal mouth; 1313, second annular groove; M, motor; N, saw blade. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0023] Example 1

[0024] Reference Figure 1~Figure 4 , which is a first embodiment of the present invention, provides a wood cutting device, which includes a driving unit 1, including a motor shaft 11, a chuck 12 arranged on one side of the motor shaft 11, and a stop assembly 13 arranged between the chuck 12 and the motor shaft 11; The chuck 12 and the motor shaft 11 are connected via a stop assembly 13 .

[0025] Furthermore, it also includes a motor M and a saw blade N.

[0026] It should be noted that the motor shaft 11 is the rotating shaft of the motor M, the saw blade N is connected to the end face of the chuck 12 through bolts, and the motor shaft 11 and the chuck 12 are connected through a stop assembly 13. When the motor shaft 11 rotates, it can drive the saw blade N to rotate for cutting wood.

[0027] Preferably, the stop assembly 13 can adopt a torque limiter, when the saw blade N cuts wood and cuts a nail in the wood and stops suddenly, the power of the motor M is interrupted in time to protect the motor M and the saw blade N. In addition, the risk of the blade of the saw blade N being broken off can be reduced.

[0028] Preferably, a bracket is fixed on the upper end surface of the motor M, and the device can be fixed to the bottom of the workbench by bolts.

[0029] Example 2

[0030] Reference Figure 1~Figure 4 , which is the second embodiment of the present invention, is different from the first embodiment in that it also includes a chuck 12 including a driven shaft 121 arranged on one side thereof.

[0031] Furthermore, the motor shaft 11 includes a spring seat 111 arranged on its outer wall, a cylindrical cavity 112 arranged on the end face of the motor shaft 11 , at least one shuttle hole 113 penetrating the inner wall of the cylindrical cavity 112 , and a first protrusion 114 arranged on one side of the spring seat 111 .

[0032] Furthermore, the driven shaft 121 includes a column 1211 disposed at one end thereof, a first annular groove 1212 disposed on an outer wall of the column 1211 , and a second protruding column 1213 disposed on the outer wall of the driven shaft 121 .

[0033] Furthermore, the stopping assembly 13 includes a sleeve 131 , a spring 132 disposed on one side of the sleeve 131 , and a round ball 133 disposed inside the shuttle-shaped hole 113 .

[0034] Furthermore, the sleeve 131 includes a T-shaped hole 1311 penetratingly provided on the surface thereof, a trapezoidal opening 1312 penetratingly provided at one end of the sleeve 131 , and a second annular groove 1313 provided on the inner wall of the sleeve 131 .

[0035] Furthermore, the second annular groove 1313 is adjacent to the trapezoidal opening 1312 .

[0036] It should be noted that a driven shaft 121 is fixed to one end surface of the chuck 12, and a column 1211 is also fixed to the outer end of the driven shaft 121. A second protrusion 1213 perpendicular to the axis of the driven shaft 121 is also fixed to the shaft body of the driven shaft 121, and the second protrusion 1213 is close to the column 1211. A first annular groove 1212 is also provided on the outer wall of the column 1211. The cross-sectional shape of the first annular groove 1212 is not limited, and it only needs to be able to accommodate a part of the ball 133 as a whole.

[0037] Preferably, a cylindrical cavity 112 is further provided at the center of the end face of the motor shaft 11, and its inner diameter is consistent with the outer diameter of the second protrusion 1213. A first protrusion 114 perpendicular to the axis of the motor shaft 11 is also fixed on the shaft body of the motor shaft 11, and the first protrusion 114 is adjacent to the outer end of the motor shaft 11. A plurality of shuttle holes 113 distributed circumferentially are provided on the inner wall of the cylindrical cavity 112, and the shuttle holes 113 have a shuttle-shaped cross section, with a large space in the middle and small openings at both ends. A round ball 133 is installed inside each shuttle hole 113, and the round ball 133 can move at both ends in the shuttle hole 113, and a part of the round ball 133 can be exposed from the shuttle hole 113.

[0038] Preferably, the spring seat 111 is fixed on the inner side of the motor shaft 11 to limit the spring 132 sleeved on the motor shaft 11, and the other side of the spring 132 is limited by one side of the sleeve 131 sleeved on the motor shaft 11. Therefore, the spring 132 is located between the spring seat 111 and the sleeve 131, and always provides a force to the sleeve 131 toward the chuck 12.

[0039] Preferably, the sleeve 131 is cylindrical, and a through T-hole 1311 is provided on its surface, and the T-hole 1311 is adjacent to the end of the sleeve 131. A trapezoidal opening 1312 is provided at the other end opening of the sleeve 131, and the trapezoidal opening 1312 does not need to be aligned with the T-hole 1311.

[0040] Preferably, the trapezoidal opening 1312 is inverted in the sleeve 131. A second annular groove 1313 is provided on the inner wall of the sleeve 131 adjacent to the trapezoidal opening 1312. The shape of the second annular groove 1313 is consistent with the function and shape of the first annular groove 1212.

[0041] Preferably, for ease of description, refer to Figure 2 , the first protrusion 114 completely passes through the T-hole 1311, and when the spring 132 acts on the sleeve 131, the first protrusion 114 fits the leftmost side of the T-hole 1311, and the bottom of the trapezoidal opening 1312 contacts the second protrusion 1213. At this time, the ball 133 is pressed toward the first annular groove 1212 by the sleeve 131, so the chuck 12 cannot be separated from the stop assembly 13 at this time.

[0042] When using, refer to Figure 2 During installation, personnel need to overcome the action of the spring 132 to push the sleeve 131 toward the motor M, and then rotate the sleeve 131 until the first boss 114 enters into either side of the longitudinal portion of the T-hole 1311. At this time, the sleeve 131 is limited and no longer reset, and the second annular groove 1313 is aligned with the position of the shuttle hole 113.

[0043] It should be noted that the shape of the T-hole 1311 does not matter the direction of the motor M, that is, no matter which direction the motor shaft 11 is in, the power interruption effect of the device can be guaranteed.

[0044] Then, the column 1211 on the chuck 12 is inserted into the cylindrical cavity 112. When the column 1211 passes through the shuttle hole 113, each ball 133 is pushed into the second annular groove 1313 until the end of the driven shaft 121 fits with the end face of the motor shaft 11. At this time, the shuttle hole 113, the first annular groove 1212 and the second annular groove 1313 are all aligned.

[0045] After the access work is completed, the chuck 12 needs to be finally limited. The personnel reversely rotates the sleeve 131 until the lateral part of the T-hole 1311 is aligned with the first protrusion 114. Under the action of the spring 132, the sleeve 131 is reset, and the second annular groove 1313 is staggered with the shuttle hole 113 and the first annular groove 1212. Under the action of the inner wall of the sleeve 131, each ball 133 is pushed into the first annular groove 1212. At this time, the chuck 12 is limited by each ball 133.

[0046] It should be noted that the second protruding column 1213 needs to be aligned with the trapezoidal opening 1312 .

[0047] When the motor M is working, the motor shaft 11 drives the sleeve 131 to rotate through the contact between the first protrusion 114 and the transverse groove wall of the T-hole 1311, and the inclined wall of the trapezoidal opening 1312 drives the second protrusion 1213 to rotate, thereby driving the chuck 12 and the saw blade N to rotate, and the device can cut wood at this time.

[0048] When there are nails on the wood and the blade of the saw blade N cuts them, the saw blade N will be blocked and stop suddenly. At this time, the driven shaft 121 on the chuck 12 stops rotating. Under the action of the two side walls of the trapezoidal opening 1312 and the second protrusion 1213, the sleeve 131 is forced to move toward the direction of the motor M. Then, as the motor shaft 11 continues to rotate, the first protrusion 114 will enter the longitudinal hole of the T-hole 1311. At this time, the sleeve 131 will no longer reset, and the second protrusion 1213 will no longer contact with the sleeve 131. The chuck 12 is no longer driven to rotate by the sleeve 131, and the power is interrupted. This can effectively avoid damage to the motor M and the saw blade N due to excessive torque, and can also reduce the risk of chipping of the saw blade N.

[0049] When the saw blade N needs to be replaced, the chuck 12 can be easily removed, and when the saw blade N is not replaced and the work is resumed, the motor M is disconnected and the sleeve 131 is reversely rotated until it is reset. The efficiency of saw blade replacement and resumption of work is ensured.

[0050] In summary, this design can interrupt the power in time and stop the saw blade N when encountering a nail on the wood. The installation and withdrawal of the saw blade N is more time-saving and labor-saving, and the operation is convenient, and it can also ensure that the work can be resumed quickly. In addition, this device can reduce the risk of chipping and can provide good protection for the motor M, saw blade N and its auxiliary structures.

[0051] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wood cutting device, characterized in that: include, A drive unit (1) comprising a motor shaft (11), a chuck (12) arranged on one side of the motor shaft (11), and a stop assembly (13) arranged between the chuck (12) and the motor shaft (11); The chuck (12) and the motor shaft (11) are connected via a stop assembly (13).

2. The wood cutting device according to claim 1, characterized in that: The chuck (12) comprises a driven shaft (121) arranged on one side thereof.

3. The wood cutting device according to claim 2, characterized in that: The motor shaft (11) comprises a spring seat (111) arranged on an outer wall thereof, a cylindrical cavity (112) arranged on an end surface of the motor shaft (11), at least one shuttle-shaped hole (113) penetrating the inner wall of the cylindrical cavity (112), and a first protruding column (114) arranged on one side of the spring seat (111).

4. The wood cutting device according to claim 3, characterized in that: The driven shaft (121) comprises a column (1211) arranged at one end thereof, a first annular groove (1212) arranged on the outer wall of the column (1211), and a second protruding column (1213) arranged on the outer wall of the driven shaft (121).

5. The wood cutting device according to claim 4, characterized in that: The stop assembly (13) comprises a sleeve (131), a spring (132) arranged on one side of the sleeve (131), and a round ball (133) arranged inside the shuttle-shaped hole (113).

6. The wood cutting device according to claim 5, characterized in that: The sleeve (131) comprises a T-shaped hole (1311) provided through the surface thereof, a trapezoidal opening (1312) provided through one end of the sleeve (131), and a second annular groove (1313) provided on the inner wall of the sleeve (131).

7. The wood cutting device according to claim 6, characterized in that: The second annular groove (1313) is adjacent to the trapezoidal opening (1312).

8. The wood cutting device according to claim 7, characterized in that: Also included is a motor (M) and a saw blade (N).

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