阅读说明：本技术 一种旋切效果好的旋切机 (Rotary cutter with good rotary cutting effect ) 是由 黄泽辉 黄毅聪 于 2020-07-06 设计创作，主要内容包括：本发明公开一种旋切效果好的旋切机,包括旋切机主体,所述旋切机主体包括定心装置和旋切机构；还包括驱动旋切机主体翻转90°使圆木处于竖直状态的翻转装置。在对圆木进行切削前,先使用定心装置将原木两端的中心定位出来,然后直接通过定心装置上的第一定位轴机构与第二定位轴机构继续将圆木夹紧,再然后通过翻转装置,将旋切机主体翻转90°,使圆木在保持竖直状态下对其进行切削,此时,不会出现偏心误差,圆木也不容易发生抖动,旋切出的薄木板就不会出现断断续续的情况,提高薄皮木材的旋切质量。(The invention discloses a rotary cutter with good rotary cutting effect, which comprises a rotary cutter main body, wherein the rotary cutter main body comprises a centering device and a rotary cutting mechanism; the turning device is used for driving the rotary cutter main body to turn 90 degrees so that the log is in a vertical state. Before cutting the log, the centers at two ends of the log are positioned by using the centering device, then the log is continuously clamped by directly using the first positioning shaft mechanism and the second positioning shaft mechanism on the centering device, and then the rotary cutter body is turned by 90 degrees by using the turning device, so that the log is cut under the condition of keeping the vertical state, at the moment, the eccentric error cannot occur, the log is not easy to shake, the broken and continuous condition of the rotary cut veneer cannot occur, and the rotary cutting quality of the veneer is improved.)

1. A rotary cutter with good rotary cutting effect comprises a rotary cutter main body, wherein the rotary cutter main body comprises a centering device and a rotary cutting mechanism; the method is characterized in that: the turning device is used for driving the rotary cutter body to turn 90 degrees so as to enable the log to be in a vertical state; the turnover device comprises two turnover driving oil cylinders positioned at the bottom of the rotary cutter main body and a bearing frame for bearing the turnover driving oil cylinders and the rotary cutter main body; a first connecting block which is connected with the bearing frame in the axial direction is arranged at the bottom of the cylinder body of the turnover driving oil cylinder, the first connecting block is provided with a first connecting hole which is perpendicular to the output shaft of the turnover driving oil cylinder and penetrates through the first connecting block, a second connecting block which is connected with the bottom of the rotary cutter main body is arranged at the top of the output shaft of the turnover driving oil cylinder, and a second connecting hole which is parallel to the first connecting hole and penetrates through the second connecting block is arranged on the second connecting block; the bearing frame comprises a bearing base, and a first supporting column, a second supporting column, a third supporting column and a fourth supporting column which are perpendicular to the bearing base and are sequentially arranged at four corners of the bearing base; a connecting beam which can be used for turning the rotary cutter main body is arranged between the first supporting column and the second supporting column; a supporting beam capable of bearing the rotary cutter main body is arranged between the third supporting column and the fourth supporting column; the bearing base is also provided with a first connecting frame connected with the turnover driving oil cylinder, and the first connecting frame is provided with a first connecting shaft matched with the first connecting hole; the bottom of the rotary cutter main body is provided with a second connecting frame connected with the turnover driving oil cylinder, and the second connecting frame is provided with a second connecting shaft matched with the second connecting hole; the rotary cutter main body is also provided with a turning hole which penetrates through the rotary cutter main body and is matched with the connecting cross beam.

2. A rotary cutting machine with good rotary cutting effect according to claim 1, characterized in that: the centering device comprises a first clamping part at one end of the log and a second clamping part at the other end of the log.

3. A rotary cutting machine having a good rotary cutting effect according to claim 2, wherein: the first clamping part comprises a first base plate perpendicular to the log, a first positioning shaft mechanism penetrating through the first base plate, a first positioning sleeve mechanism sleeved outside the first positioning shaft mechanism, a first positioning shaft rotating motor driving the first positioning shaft mechanism to rotate, and a first positioning sleeve rotating motor driving the first positioning sleeve to rotate; the second clamping part comprises a second base plate perpendicular to the log, a second positioning shaft mechanism penetrating through the second base plate, a second positioning sleeve mechanism sleeved outside the second positioning shaft mechanism, a second positioning shaft rotating motor driving the second positioning shaft mechanism to rotate, and a second positioning sleeve rotating motor driving the second positioning sleeve to rotate.

4. A rotary cutting machine having a good rotary cutting effect according to claim 3, wherein: the first positioning shaft mechanism comprises a first positioning rotating shaft which is contacted with one end of a log and propped against the end of the log, a first positioning cylinder which penetrates through the first base plate and drives the first positioning rotating shaft to be close to or far away from the log, and a one-way adaptive extending piece which is connected between the first positioning rotating shaft and the first positioning cylinder; the first positioning sleeve mechanism comprises a first hollow shaft and a first positioning rotating sleeve, the first hollow shaft is sleeved outside the first positioning shaft mechanism and fixedly connected with the first base plate, the first positioning rotating sleeve is sleeved outside the first hollow shaft and rotatably connected with the first hollow shaft, and three first positioning arms are uniformly distributed around the axis of the first positioning sleeve on the first positioning rotating sleeve; the second positioning shaft mechanism comprises a second positioning rotating shaft which is contacted and propped against the other end of the log and a second positioning cylinder which penetrates through the second base plate and drives the second positioning rotating shaft to be close to or far away from the log; the second positioning sleeve mechanism comprises a second hollow shaft which is sleeved outside the second positioning shaft mechanism and is fixedly connected with the second substrate, and a second positioning rotating sleeve which is sleeved outside the second hollow shaft and is rotatably connected with the second hollow shaft, wherein three second positioning arms which are uniformly distributed around the axis of the second positioning sleeve are arranged on the second positioning rotating sleeve.

5. A rotary cutting machine with good rotary cutting effect according to claim 4, wherein: the unidirectional adaptive extension piece comprises a shell fixedly connected with an output shaft of the first positioning cylinder, a sliding ejector block fixedly connected with the first positioning rotating shaft, and a pressure spring arranged between the shell and the sliding ejector block; an accommodating cavity for the sliding top block to move is formed in the shell; one end of the pressure spring is fixedly connected to the bottom of the accommodating cavity, and the other end of the pressure spring is fixedly connected to the bottom of the sliding ejector block; a limiting step for limiting the sliding top block is arranged at the cavity opening of the accommodating cavity, a first clamping step matched with the inner end of the limiting step is arranged at the root of the sliding top block, and a second clamping step matched with the outer end of the limiting step is arranged on the peripheral surface of the sliding top block; the limiting step is positioned between the first clamping step and the second clamping step.

6. A rotary cutting machine with good rotary cutting effect according to claim 5, wherein: and the bottom of the accommodating cavity of the unidirectional adaptive extension piece is also provided with a displacement sensor for sensing the moving distance of the sliding ejector block.

7. A rotary cutting machine with good rotary cutting effect according to claim 1, characterized in that: the rotary cutting mechanism comprises a rotary cutter for cutting the log, a sliding cutter handle for bearing the rotary cutter, and a rotary cutting cylinder for driving the sliding cutter handle to be close to or far away from the log.

8. A rotary cutting machine having a good rotary cutting effect according to claim 7, wherein: the rotary cutter main body is also provided with a guide rail for the sliding cutter handle to slide.

Technical Field

The invention relates to the field of wood processing, in particular to a rotary cutter with good rotary cutting effect.

Background

The rotary cutter is used for processing round timbers with certain length and diameter into continuous thin-skin timbers for producing plywood, and the conventional rotary cutter has the defects that the round timbers are irregular, the diameters of some places are larger, the diameters of some places are smaller, and even some places can be subjected to some knots in the rotary cutting process, so that the round timbers are easy to shake up and down in the rotary cutting process, the cut thin-skin timbers are intermittent and continuous, and the quality is not over-critical.

In view of the above, the applicant has made an intensive study to solve the above problems and has made the present invention.

Disclosure of Invention

The invention mainly aims to provide a rotary cutter with good rotary cutting effect.

In order to achieve the above purpose, the solution of the invention is: a rotary cutter with good rotary cutting effect comprises a rotary cutter main body, wherein the rotary cutter main body comprises a centering device and a rotary cutting mechanism; the turning device is used for driving the rotary cutter body to turn 90 degrees so as to enable the log to be in a vertical state; the turnover device comprises two turnover driving oil cylinders positioned at the bottom of the rotary cutter main body and a bearing frame for bearing the turnover driving oil cylinders and the rotary cutter main body; a first connecting block which is connected with the bearing frame in the axial direction is arranged at the bottom of the cylinder body of the turnover driving oil cylinder, the first connecting block is provided with a first connecting hole which is perpendicular to the output shaft of the turnover driving oil cylinder and penetrates through the first connecting block, a second connecting block which is connected with the bottom of the rotary cutter main body is arranged at the top of the output shaft of the turnover driving oil cylinder, and a second connecting hole which is parallel to the first connecting hole and penetrates through the second connecting block is arranged on the second connecting block; the bearing frame comprises a bearing base, and a first supporting column, a second supporting column, a third supporting column and a fourth supporting column which are perpendicular to the bearing base and are sequentially arranged at four corners of the bearing base; a connecting beam which can be used for turning the rotary cutter main body is arranged between the first supporting column and the second supporting column; a supporting beam capable of bearing the rotary cutter main body is arranged between the third supporting column and the fourth supporting column; the bearing base is also provided with a first connecting frame connected with the turnover driving oil cylinder, and the first connecting frame is provided with a first connecting shaft matched with the first connecting hole; the bottom of the rotary cutter main body is provided with a second connecting frame connected with the turnover driving oil cylinder, and the second connecting frame is provided with a second connecting shaft matched with the second connecting hole; the rotary cutter main body is also provided with a turning hole which penetrates through the rotary cutter main body and is matched with the connecting cross beam.

Further, the centering device comprises a first clamping part at one end of the log and a second clamping part at the other end of the log.

Further, the first clamping part comprises a first base plate perpendicular to the log, a first positioning shaft mechanism penetrating through the first base plate, a first positioning sleeve mechanism sleeved outside the first positioning shaft mechanism, a first positioning shaft rotating motor driving the first positioning shaft mechanism to rotate, and a first positioning sleeve rotating motor driving the first positioning sleeve to rotate; the second clamping part comprises a second base plate perpendicular to the log, a second positioning shaft mechanism penetrating through the second base plate, a second positioning sleeve mechanism sleeved outside the second positioning shaft mechanism, a second positioning shaft rotating motor driving the second positioning shaft mechanism to rotate, and a second positioning sleeve rotating motor driving the second positioning sleeve to rotate.

Further, the first positioning shaft mechanism comprises a first positioning rotating shaft which is contacted with one end of the log and abuts against the end of the log, a first positioning cylinder which penetrates through the first base plate and drives the first positioning rotating shaft to be close to or far away from the log, and a one-way adaptive extending piece which is connected between the first positioning rotating shaft and the first positioning cylinder; the first positioning sleeve mechanism comprises a first hollow shaft and a first positioning rotating sleeve, the first hollow shaft is sleeved outside the first positioning shaft mechanism and fixedly connected with the first base plate, the first positioning rotating sleeve is sleeved outside the first hollow shaft and rotatably connected with the first hollow shaft, and three first positioning arms are uniformly distributed around the axis of the first positioning sleeve on the first positioning rotating sleeve; the second positioning shaft mechanism comprises a second positioning rotating shaft which is contacted and propped against the other end of the log and a second positioning cylinder which penetrates through the second base plate and drives the second positioning rotating shaft to be close to or far away from the log; the second positioning sleeve mechanism comprises a second hollow shaft which is sleeved outside the second positioning shaft mechanism and is fixedly connected with the second substrate, and a second positioning rotating sleeve which is sleeved outside the second hollow shaft and is rotatably connected with the second hollow shaft, wherein three second positioning arms which are uniformly distributed around the axis of the second positioning sleeve are arranged on the second positioning rotating sleeve.

Further, the one-way adaptive extension piece comprises a shell fixedly connected with an output shaft of the first positioning cylinder, a sliding ejector block fixedly connected with the first positioning rotating shaft, and a pressure spring arranged between the shell and the sliding ejector block; an accommodating cavity for the sliding top block to move is formed in the shell; one end of the pressure spring is fixedly connected to the bottom of the accommodating cavity, and the other end of the pressure spring is fixedly connected to the bottom of the sliding ejector block; a limiting step for limiting the sliding top block is arranged at the cavity opening of the accommodating cavity, a first clamping step matched with the inner end of the limiting step is arranged at the root of the sliding top block, and a second clamping step matched with the outer end of the limiting step is arranged on the peripheral surface of the sliding top block; the limiting step is positioned between the first clamping step and the second clamping step.

Furthermore, the bottom of the accommodating cavity of the one-way adaptive extension piece is also provided with a displacement sensor for sensing the moving distance of the sliding ejector block.

Further, the rotary cutting mechanism comprises a rotary cutter for cutting the log, a sliding cutter handle for bearing the rotary cutter, and a rotary cutting cylinder for driving the sliding cutter handle to be close to or far away from the log;

Further, a guide rail for sliding the sliding tool handle is further arranged on the rotary cutter main body.

After the structure is adopted, the rotary cutter with good rotary cutting effect related by the invention is characterized in that before rotary cutting, a log is clamped by a first positioning arm on a first positioning rotating sleeve and a second positioning arm on a second positioning rotating sleeve, then the first positioning rotating sleeve and the second positioning rotating sleeve are driven to rotate so as to drive the log to rotate, at the moment, a first positioning rotating shaft and a second positioning rotating shaft are respectively driven by a first positioning air cylinder and a second positioning air cylinder to be close to the two ends of the log, a central hole is respectively cut at the two ends of the log, then the first positioning arm and the second positioning arm are retracted, the log is continuously clamped by the first positioning rotating shaft and the second positioning rotating shaft, at the moment, a rotary cutter main body is jacked up by a turnover driving oil cylinder in a turnover device so as to be turned over 90 degrees around a connecting cross beam, so that a first positioning shaft mechanism is positioned above, and a second positioning shaft mechanism is positioned below, in the upset in-process, because the change of gravity, the log can take place breaking away from to a certain extent with first locating shaft, at this moment, the pressure spring in the one-way adaptation extension piece can in time drive the slip kicking block and remove to first locating shaft, makes first locating shaft support the top contact with the log in real time, and at the in-process of one-way adaptation extension piece motion, first location cylinder drives the whole first locating shaft that is close to of one-way adaptation extension piece simultaneously, makes the log remain stable. After the turning is finished, the first positioning shaft rotating motor and the second positioning shaft rotating motor drive the first positioning shaft mechanism and the second positioning shaft mechanism to rotate so as to drive the log to rotate, and finally the rotary cutting knife is driven by the rotary cutting cylinder to approach the log, so that the cutting is finished. When the round timber is cut in a vertical state, eccentric errors cannot occur, the round timber is not easy to shake, the rotary cut veneer timber cannot be interrupted, and the rotary cutting quality of the veneer timber is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention before being turned over;

FIG. 2 is a schematic diagram of the inverted structure of the present invention;

FIG. 3 is an exploded view of the first and second engaging portions of the present invention;

FIG. 4 is a schematic cross-sectional view of a single direction accommodating elongate member of the present invention;

FIG. 5 is a schematic structural view of the roll-over actuating cylinder of the present invention;

FIG. 6 is a schematic view of the construction of the loading frame of the present invention;

fig. 7 is a schematic structural view of a rotary cutting machine body according to the present invention.

In the figure: 1-a rotary cutter main body, 11-a rotary cutting mechanism, 111-a rotary cutter, 112-a rotary cutting cylinder, 113-a sliding cutter handle, 12-a turning hole and 13-a second connecting shaft;

2-turnover device, 21-turnover driving oil cylinder, 211-first connecting hole, 212-second connecting hole, 22-bearing frame, 221-bearing base, 2211-first supporting column, 2212-second supporting column, 2213-third supporting column, 2214-fourth supporting column, 2215-connecting beam, 2216-supporting beam and 2217-first connecting shaft;

3-centering device, 31-first clip, 311-first base plate, 312-first positioning shaft mechanism, 3121-first positioning shaft, 3122-first positioning cylinder, 3123-one-way adaptive extension piece, 31231-housing, 31232-pressure spring, 31233-sliding top block, 31234-accommodating cavity, 31235-limit step, 31236-first stop step, 31237-second stop step, 31238-displacement sensor, 313-first positioning sleeve mechanism, 3131-first hollow shaft, 3132-first positioning rotating sleeve, 3133-first positioning arm, 314-first positioning shaft rotating motor, 315-first positioning sleeve rotating motor, 32-second clip, 321-second base plate, 322-second positioning shaft mechanism, 3221-second positioning shaft mechanism, 3223-second positioning shaft mechanism, 3222-a second positioning cylinder, 323-a second positioning sleeve mechanism, 3231-a second hollow shaft, 3232-a second positioning rotating sleeve, 3233-a second positioning arm, 324-a second positioning shaft rotating motor and 325-a second positioning sleeve rotating motor;

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

As shown in fig. 1-7, a rotary cutting machine with good rotary cutting effect comprises a rotary cutting machine main body 1, wherein the rotary cutting machine main body 1 comprises a centering device and a rotary cutting mechanism 11; the rotary cutting machine also comprises a turnover device 2 for driving the rotary cutting machine main body 1 to turn 90 degrees so that the log is in a vertical state; the turnover device 2 comprises two turnover driving oil cylinders 21 positioned at the bottom of the rotary cutter main body 1 and a bearing frame 22 for bearing the turnover driving oil cylinders 21 and the rotary cutter main body 1; the bottom of the cylinder body of the turning driving cylinder 21 is provided with a first connecting block which is connected with the bearing frame 22 in a radial direction, the first connecting block is provided with a first connecting hole 211 which is vertical to the output shaft of the turning driving cylinder 21 and penetrates through the first connecting block, the top of the output shaft of the turning driving cylinder 21 is provided with a second connecting block which is connected with the bottom of the rotary cutter main body 1, and the second connecting block is provided with a second connecting hole 212 which is parallel to the first connecting hole 211 and penetrates through the second connecting block; the bearing frame 22 comprises a bearing base 221, and a first supporting column 2211, a second supporting column 2212, a third supporting column 2213 and a fourth supporting column 2214 which are perpendicular to the bearing base 221 and are sequentially arranged at four corners of the bearing base 221; a connecting beam 2215 which can be used for turning the rotary cutter main body 1 is arranged between the first supporting column 2211 and the second supporting column 2212; a supporting beam 2216 capable of bearing the rotary cutter main body 1 is arranged between the third supporting column 2213 and the fourth supporting column 2214; the bearing base 221 is further provided with a first connecting frame connected with the turnover driving oil cylinder 21, and the first connecting frame is provided with a first connecting shaft 2217 matched with the first connecting hole 211; the bottom of the rotary cutter main body 1 is provided with a second connecting frame connected with the turnover driving oil cylinder 21, and the second connecting frame is provided with a second connecting shaft 13 matched with the second connecting hole 212; the rotary cutter body 1 is also provided with an overturning hole 12 which penetrates through the rotary cutter body 1 and is matched with the connecting cross beam 2215. Before cutting the log, firstly, a groove is respectively cut in the centers of two ends of the log through the centering device 3, so that the centering device 3 clamps the log through the groove, thus the log can be guaranteed not to have center deviation when being cut, then the rotary cutter main body 1 is jacked up through the overturning driving oil cylinder 21 in the overturning device 2, the rotary cutter main body is overturned for 90 degrees around the connecting cross beam 2215, the horizontal clamping of the log is changed into the vertical clamping, finally, the rotary cutter 11 is used for rotary cutting the log, when the log is cut in the vertical state, the shaking is not easy to occur, the rotary cut veneer can not be broken and continuous, and the rotary cutting quality of the veneer can be improved.

Preferably, the turning device 2 includes two turning drive cylinders 21 located at the bottom of the rotary cutting machine body 1. The rotary cutting machine main body 1 can be overturned by 90 degrees through the overturning driving oil cylinder 21, so that the rotary cutting machine is overturned from the original horizontal state to the vertical state.

Preferably, the centering device 3 comprises a first catch 31 at one end of the log, and a second catch 32 at the other end of the log. Through setting up first card portion 31 and second card portion 32 at the both ends of log, can press from both sides tight location to the log better, make the log be difficult to drop.

Preferably, the first clamping portion 31 includes a first base plate 311 perpendicular to the log, a first positioning shaft mechanism 312 penetrating through the first base plate 311, a first positioning sleeve mechanism 313 sleeved outside the first positioning shaft mechanism 312, a first positioning shaft rotating motor 314 driving the first positioning shaft mechanism 312 to rotate, and a first positioning sleeve rotating motor 315 driving the first positioning sleeve to rotate; the second locking portion 32 includes a second base plate 321 perpendicular to the log, a second positioning shaft mechanism 322 penetrating through the second base plate 321, a second positioning sleeve mechanism 323 sleeved outside the second positioning shaft mechanism 322, a second positioning shaft rotating motor 324 driving the second positioning shaft mechanism 322 to rotate, and a second positioning sleeve rotating motor 325 driving the second positioning sleeve to rotate. Firstly, the log is clamped by the first positioning sleeve mechanism 313 and the second positioning sleeve mechanism 323, then the first positioning sleeve mechanism 313 and the second positioning sleeve mechanism 323 are driven to rotate by the first positioning sleeve motor and the second positioning sleeve motor, so as to drive the log to rotate, then the first positioning shaft mechanism 312 and the second positioning shaft mechanism 322 are driven to approach to two ends of the log, so that positioning cutters (not shown in the figure) on the first positioning shaft mechanism 312 and the second positioning shaft mechanism 322 respectively cut a positioning central hole at two ends of the log, finally the first positioning shaft mechanism 312 and the second positioning shaft mechanism 322 continue to clamp the log at the position of the positioning central hole, and the first positioning shaft rotation motor 314 and the second positioning shaft rotation motor 324 drive the first positioning shaft mechanism 312 and the second positioning shaft mechanism 322 to rotate, so as to drive the log to rotate.

Preferably, the first positioning shaft mechanism 312 includes a first positioning rotating shaft 3121 contacting and abutting against one end of the log, a first positioning cylinder 3122 penetrating through the first base plate 311 and driving the first positioning rotating shaft 3121 to approach or separate from the log, and a unidirectional adaptive extension 3123 connected between the first positioning rotating shaft 3121 and the first positioning cylinder 3122; the first positioning sleeve mechanism 313 includes a first hollow shaft 3131 sleeved outside the first positioning shaft mechanism 312 and fixedly connected to the first substrate 311, and a first positioning rotating sleeve 3132 sleeved outside the first hollow shaft 3131 and rotatably connected to the first hollow shaft 3131, wherein the first positioning rotating sleeve 3132 is provided with three first positioning arms 3133 uniformly distributed around an axis of the first positioning sleeve; the second positioning shaft mechanism 322 comprises a second positioning rotating shaft 3221 contacting and abutting against the other end of the log, and a second positioning cylinder 3222 penetrating through the second base plate 321 and driving the second positioning rotating shaft 3221 to approach or depart from the log; the second positioning sleeve mechanism 323 comprises a second hollow shaft 3231 sleeved outside the second positioning shaft mechanism 322 and fixedly connected with the second substrate 321, and a second positioning rotating sleeve 3232 sleeved outside the second hollow shaft 3231 and rotatably connected with the second hollow shaft 3231, wherein the second positioning rotating sleeve 3232 is provided with three second positioning arms 3233 uniformly distributed around the axis of the second positioning sleeve. Firstly, a log is clamped by a first positioning arm 3133 on a first positioning sleeve and a second positioning arm 3233 on a second positioning sleeve, then the log is driven to rotate by driving the first positioning sleeve and the second positioning sleeve to rotate, at this time, a first positioning air cylinder 3122 and a second positioning air cylinder 3222 respectively drive a first positioning rotating shaft 3121 and a second positioning rotating shaft 3221 to approach to two ends of the log, a positioning center hole is respectively cut at two ends of the log by positioning cutters (not shown in the figure) on the first positioning rotating shaft 3121 and the second positioning rotating shaft 3221, and then the first positioning arm 3133 and the second positioning arm 3233 are retracted (the first positioning arm 3133 and the second positioning arm 3233 can be mounted on the first positioning sleeve and the second positioning sleeve in a hinged manner), so that the first positioning rotating shaft 3121 and the second positioning rotating shaft 3221 continue to clamp the log.

Preferably, the one-way adaptive extending member 3123 includes a housing 31231 fixedly connected to the output shaft of the first positioning cylinder 3122, a sliding top block 31233 fixedly connected to the first positioning rotating shaft 3121, and a pressure spring 31232 disposed between the housing 31231 and the sliding top block 31233; a containing cavity 31234 which can be used for moving the sliding top block 31233 is arranged in the shell 31231; one end of the pressure spring 31232 is fixedly connected with the bottom of the accommodating cavity 31234, and the other end is fixedly connected with the bottom of the sliding top block 31233; a limiting step 31235 for limiting the sliding top block 31233 is arranged at the opening of the accommodating cavity 31234, a first clamping step 31236 matched with the inner end of the limiting step 31235 is arranged at the root of the sliding top block 31233, and a second clamping step 31237 matched with the outer end of the limiting step 31235 is arranged on the circumferential surface of the sliding top block 31233; the limit step 31235 is located between the first latching step 31236 and the second latching step 31237. When overturning the rotary cutting machine main body 1, due to the change of the gravity center of the log, the log can break away from the first positioning rotating shaft 3121 to a certain extent, at this time, the pressure spring 31232 in the one-way adaptive extension piece 3123 of the first positioning shaft mechanism 312 can timely move the sliding top block 31233 to the first positioning rotating shaft 3121, thereby driving the first positioning rotating shaft 3121 to draw close to the log, preventing the first positioning shaft mechanism 312 from breaking away from the log, and through the matching of the limiting step 31235 of the cavity opening of the accommodating cavity 31234 and the clamping step on the sliding top block 31233, preventing the sliding top block 31233 from being completely popped up by the pressure spring 31232.

Preferably, displacement sensor 31238 is located at the bottom of cavity 31234 of one-way compliant elongate member 3123 to sense the distance traveled by sliding top block 31233. The displacement sensor 31238 senses the moving distance of the sliding ejector block and transmits the moving distance to the first positioning cylinder, and then the first positioning cylinder drives the shell of the one-way adaptive extension piece to move the same distance to the log, so that the log is kept stable.

Preferably, the rotary cutting mechanism 11 includes a rotary cutter 111 for rotary cutting the log, a sliding cutter handle 113 for carrying the rotary cutter, and a rotary cutting cylinder 112 for driving the sliding cutter handle 113 to move closer to or away from the log. When the turning is finished, the log can be cut, and at the moment, the rotary cutting cylinder 112 can be used for driving the rotary cutting knife 111 to be close to the log so as to cut the log.

Preferably, the rotary cutting machine body 1 is further provided with a guide rail for sliding the sliding tool shank 113. Through the guide rail, the sliding knife handle 113 can be more stable when sliding.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.