JP2014148002A - Cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an epoch-making cutting device for efficiently performing work by reducing a burden on legs and loins of a worker by decreasing bending and stretching of the worker during cutting work.SOLUTION: The cutting device comprises an engage and hold mechanism 9 formed from a rotary lock part 10 which is provided in one of a receiver part 3 and a movable part 4 so as to freely rise, fall and rotate, and a lock part 11 provided in the other. The lock part 11 is made proximate and abutted to the rotary lock part 10 in a tilted state, the rotary lock part 10 is caused to rise and rotate. The rising and rotating rotary lock part 10 is engaged and locked to the lock part 11 or brought into a lock enabled state to be engaged and locked by cutting an operation rod 7, thereby holding an engaged state of the receiver part 3 and the movable part 4. The rotary lock part 10 includes a foot operation part 12 for performing a tilting and rotating operation to cancel the engagement and lock of the rotary lock part 10 and the lock part 11 by a foot.

Description

  The present invention relates to a cutting device for cutting a long object such as an L-shaped angle.

  Conventionally, when a long object such as an L-shaped angle is cut, a cutting device as shown in Patent Document 1 is used.

  The cutting device of Patent Document 1 (hereinafter referred to as a conventional device) includes an engagement portion that can engage and dispose the object to be cut and connected to a fitting connection portion that can be fit and connected to a long object to be cut. A moving portion provided at a position opposite to the engaging portion and capable of moving toward and away from the engaging portion, and an arm portion serving as an operating arm via an operating mechanism such as a ratchet mechanism or a link mechanism. And when the moving part is moved closer to the engaging part by the reciprocating operation of the arm part, the moving part and the engaging part can sandwich and cut the object to be cut. In this conventional device, the locking member is suspended from the tip of the upper facing member that constitutes the fitting coupling portion, and the tip locking portion of the locking member is locked in a state of being biased by the spring. And an opening prevention mechanism composed of a locking step provided at the tip of the lower facing member. Open 擺動 countercurrent member is prevented, is configured so as to be fitted coupling state sandwich the object to be cut at a predetermined position is reliably maintained.

Japanese Patent No. 4202846

  The release prevention mechanism of this conventional apparatus is configured to release the release prevention state, that is, when releasing the engagement state between the engagement member and the engagement step portion, the operator pulls the engagement member by hand and rotates. The engagement member is released from the engagement step portion to release the engagement, but since this release prevention mechanism is located at the operator's foot, the operator bends during the release operation. The release work had to be done in the state.

  For this reason, when cutting an object to be cut using this conventional apparatus, the operator first bends and places the object to be engaged in the engaging portion, and then stands up and reciprocates the arm portion. Cleave the cut object, and after the nipping cut is finished, bend once to release the release prevention mechanism, rise up, operate the arm part and swing the upper facing member to open the fitted connection part, and bend again It has been necessary to perform bending and stretching operations such as bending and standing up many times in one cutting operation, such as taking out a workpiece to be engaged and disposed in the engaging portion.

  Therefore, the cutting operation using this conventional apparatus has been a very difficult operation that puts a heavy burden on the operator's legs.

  In view of the present situation as described above, the present invention is an epoch-making cutting device that can reduce the burden on the operator's legs, reduce the operator's bending and stretching operations during cutting work, and can perform the work efficiently. The purpose is to provide.

  The gist of the present invention will be described with reference to the accompanying drawings.

  The receiving portion 3 includes an receiving portion 3 provided with an engaging arrangement portion 2 capable of engaging and disposing the workpiece 1 and a moving portion 4 provided so as to be movable toward and away from the receiving portion 3. An object to be cut 1 is engaged and disposed on the engagement disposing part 2, and the moving part 4 is brought close to and engaged from above the receiving part 3 on which the object 1 is engaged and disposed. The moving part 4 and the receiving part 3 are provided with a clamping / fixing part 5 configured to sandwich and fix the object 1 to be cut, and the object 1 clamped and fixed by the clamping / fixing part 5 is connected to the receiving part 3. The receiving portion side cutting blade 6 provided on the moving portion 4 and the moving portion side provided on the moving portion 4 so as to be movable toward and away from the receiving portion side cutting blade 6 by operating the operating rod 7 provided on the moving portion 4. In the cutting apparatus configured to be able to be nipped and cut by the cutting blade 8, an engagement holding mechanism 9 for holding the engagement state between the receiving portion 3 and the moving portion 4 is provided. The engagement holding mechanism 9 includes a rotation locking portion 10 provided at either one of the receiving portion 3 and the moving portion 4 so as to be rotatable up and down, and a rotation locking portion provided at the other. 10 is formed by a locking portion 11 to be locked, and the moving portion 4 is moved relatively close to the receiving portion 3 so that the locking portion 11 is tilted. The rotation locking portion 10 is pushed up and rotated upright by relatively approaching and coming into contact with the rotation locking portion 10, and the rotation locking portion 10 that is turned upright is engaged with and locked to the locking portion 11. Or is engaged and locked by cutting the operating rod 7 in a lockable state, and the engagement state between the receiving portion 3 and the moving portion 4 is maintained. With the foot, the tilting / rotating operation is performed on the pivotal locking unit 10 by returning the pivotal locking unit 10 to the tilted state and releasing the locking engagement between the pivotal locking unit 10 and the locking unit 11. The foot operation unit 12 to be operated The present invention relates to a cutting device characterized by projecting toward the side of the rotation locking part 10.

  Further, the rotation locking portion 10 is hooked to a rotation portion 10A which is pivotally attached to a pivoting portion 13 provided at the front side end portion 3A of the receiving portion 3 so as to be tiltable and rotatable forward. The portion 10B protrudes upward and has a configuration in which a locking portion abutting portion 14 with which the locking portion 11 abuts is provided. In the tilted state in which the portion 10B is tilted forward, the separation distance between the front end portion 3A of the receiving portion 3 and the locking hook portion 10B extends to a separation distance through which the locking portion 11 can be inserted. In addition, the locking portion abutting portion 14 is configured so that the position of the locking portion abutting portion 14 rises to a position where the locking portion abutting portion 11 can be abutted. The locking portion 11 is inserted between the front end portion 3A of the receiving portion 3 and abuts on the locking portion abutting portion 14 in the raised position to push the rotation locking portion 10. As a result, when the rotation locking portion 10 is raised and rotated to be in the standing state, the locking hook portion 10B is engaged with the locking portion 11 that has pushed the rotation locking portion 10. When the operating rod 7 is engaged or locked by engaging or locking, the engagement holding mechanism 9 is locked, and the receiving portion 3 and the moving portion 4 are engaged. The cutting device according to claim 1, wherein the engagement state is held in an unreleasable state.

  Since the present invention is configured as described above, it is possible to perform the release operation of the engagement holding mechanism when the clamping and fixing unit is opened with the foot while the operator is standing, thereby releasing the operator. It is no longer necessary to bend one by one for operation, and the bending and stretching movements of the worker during cutting work are reduced compared to the case of using a conventional device, the burden on the operator's legs and feet is reduced, and cutting work is performed efficiently. It becomes an epoch-making cutting device with excellent practicality.

  Further, in the invention described in claim 2, it is possible to exhibit the lock / release function of the engagement holding mechanism with a simple configuration, and it becomes a cutting device excellent in practicality that can be easily realized in design.

It is a perspective view which shows a present Example. It is operation | movement explanatory drawing of the eccentric cam mechanism of a present Example. It is state explanatory drawing of the engagement holding mechanism of a present Example. It is state explanatory drawing of the engagement holding mechanism of a present Example. It is state explanatory drawing of the engagement holding mechanism of a present Example. It is state explanatory drawing of the engagement holding mechanism of a present Example. It is state explanatory drawing of the engagement holding mechanism of a present Example. It is explanatory drawing which shows the use condition of a present Example.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  In order to engage and dispose the workpiece 1 to the engagement disposing portion 2 of the receiving portion 3, and sandwich and fix the object 1 engaged and disposing to the engaging disposing portion 2 by the sandwiching and fixing portion 5. When the moving part 4 is moved relatively close to the receiving part 3, the locking part 11 constituting the engagement holding mechanism 9 rotates as the moving part 4 moves relative to the receiving part 3. It moves relatively close to the moving locking part 10 and comes into contact with the rotation locking part 10 in the tilted state.

  When the locking portion 11 comes into contact with the tilted rotation locking portion 10, the rotation locking portion 10 is pushed up by the locking portion 11 and pivots upright, and changes from the tilted state to the standing state.

  When the rotation locking portion 10 is in an upright state, the workpiece 1 is pinched and fixed by the engagement between the clamping and fixing portion 5, that is, the receiving portion 3 and the moving portion 4, and further, the rotation locking portion. The locking portion 11 that has pushed 10 and the rotation locking portion 10 are engaged and locked, or the rotation locking portion 10 and the locking portion 11 are locked, and the operation rod 7 is When the cutting operation is performed, the engaging and holding mechanism 9 is locked by engaging with the engaging portion 11, and the engaging state between the receiving portion 3 and the moving portion 4 is held in an unreleasable state. Even if a force that pushes upward and urges the moving part 4 does not move, the moving part 4 does not move upward, and the clamping and fixing state of the workpiece 1 by the clamping and fixing part 5 is maintained, so that a smooth cutting operation is performed. Can be performed.

  Further, after the cutting operation is completed, in order to release the locked state of the engagement holding mechanism 9, the rotation locking portion 10 is returned to the tilted state, and the engagement engagement between the rotation locking portion 10 and the locking portion 11 is restored. When performing the tilting rotation operation to release the stop state, the operator operates the foot operation unit 12 projecting sideways on the rotation locking unit 10 with his / her foot while turning. The movable locking portion 10 can be tilted and rotated, and the locked state of the engagement holding mechanism 9 is released by the tilting and rotating operation of the rotation locking portion 10 by this foot operation, and the object 1 is clamped and fixed. The opening / fixing operation of the holding and fixing unit 5 can be performed.

  In this way, according to the present invention, the unlocking operation of the engagement holding mechanism 9 can be performed by operating the foot while the worker is standing, so that the worker does not have to bend for the unlocking operation. As a result, the bending and stretching movements of the worker during the cutting operation are reduced compared to the case of using the conventional device, and the burden on the operator's legs is reduced, so that the cutting operation can be performed efficiently. It becomes an epoch-making cutting device excellent in practicality that can be performed.

  Specific embodiments of the present invention will be described with reference to the drawings.

  In this embodiment, the cutting device of the present invention is configured as a cutting device for an L-shaped angle, and as shown in FIG. A clamping / fixing portion 5 for clamping and fixing the mold angle 1 is provided, and the L-shaped angle 1 clamped and fixed by the clamping / fixing portion 5 is operated by reciprocating the operating rod 7 provided on the clamping / fixing portion 5 to fix the clamping angle 5. The receiving part side cutting blade 6 provided in the part 5 and the moving part side cutting blade 8 are configured to be nipped and cut (sheared).

  Below, each part which concerns on the cutting device of a present Example is demonstrated in detail.

  The rod-shaped main body portion 15 of this embodiment is provided with a grounding portion 15A on each end side (front end side and base end side) in the length direction, and further, a clamping and fixing portion 5 is attached to the grounding portion 15A provided on the front end side. The mounting fixing plate portion 15B to be fixed is erected.

  Further, the clamping and fixing portion 5 attached and fixed to the tip end portion of the rod-shaped main body portion 15 is composed of a receiving portion 3 and a moving portion 4 which are disposed to face each other in the vertical direction.

  The receiving part 3 constituting the lower side of the clamping and fixing part 5 is composed of a rectangular plate-like block body arranged in an upright state, and an engagement disposing part 2 for engaging and disposing the L-shaped angle 1. The receiving portion side cutting blade 6 that is one side of the cutting blade that sandwiches and cuts (shears) the L-shaped angle 1 is provided.

  More specifically, the engagement disposing portion 2 is formed by cutting the upper edge portion of the receiving portion 3 into a V shape. In this embodiment, the engagement disposing portion 2 An edge on one side in the thickness direction of the bottom surface portion is a receiving portion side cutting blade 6, and the L-shaped angle 1 is sheared and cut by passing between the receiving portion side cutting blade 6 and a moving portion side cutting blade 8 described later. It is composed.

  Further, the receiving portion 3 of the present embodiment has a configuration in which a rotating connecting portion 16 that rotatably connects the moving portion 4 is provided. Specifically, the rotating connecting portion 3 is provided on the rear side of the upper surface of the receiving portion 3. The configuration is such that the portion 16 protrudes upward.

  Similarly to the receiving portion 3, the moving portion 4 that constitutes the upper side of the clamping and fixing portion 5 is formed of a rectangular plate-like block body arranged in an upright state, and the rear lower corner portion is the receiving portion 3. The rotary connecting portion 16 is pivotally attached to the rotary connecting portion 16 so as to be freely rotatable, and is configured to be swingable in the vertical direction with respect to the receiving portion 3.

  In addition, the moving unit 4 is provided with a moving unit side cutting blade 8 that is the other side of the cutting blade that sandwiches and cuts (shears) the L-shaped angle 1, and the moving unit side cutting blade 8 includes the receiving unit 3. It is set as the structure provided so that the contact part side cutting blade 6 provided in this was movable to and away from and passable.

  Specifically, the moving part side cutting blade 8 is formed by operating the operating rod 7 provided in the moving part 4 to form the cutting blade through-hole 17 penetrating in the vertical direction provided in the moving part 4 by the eccentric cam mechanism. It is configured to move up and down along the inner surface.

  More specifically, as shown in FIG. 2, an eccentric cam 18 is provided on the rotating shaft portion 7A of the operating rod 7, and the rotating shaft portion 7A of the operating rod 7 provided with the eccentric cam 18 is connected to the moving portion side. When the operating rod 7 is operated to rotate up and down by being fitted and disposed in the fitting hole 20A of the slide portion 20 provided slidably in the slide portion moving space portion 19 provided in the cutting blade 8, The eccentric cam 18 rotates and rotates in the fitting hole 20A of the slide portion 20 together with the rotation shaft portion 7A serving as the rotation shaft of the operation rod 7, and the slide portion 20 is moved by the rotation rotation of the eccentric cam 18. The moving portion side cutting blade 8 is configured to move in the vertical direction while moving the slide portion moving space portion 19 of the side cutting blade 8 in the front-rear direction. In this embodiment, the operating rod 7 is rotated downward. When operated, the moving part side cutting blade 8 moves downward, that is, in a direction approaching the receiving part side cutting blade 6, and rotates upward. When it is made, the moving part side cutting blade 8 is configured to move upward, that is, in a direction away from the receiving part side cutting blade 6.

  Further, in this embodiment, when the L-shaped angle 1 is cut, the receiving portion 3 which is the clamping and fixing portion 5 and the moving portion 4 are engaged to sandwich and fix the L-shaped angle 1 so as to be clamped and cut (sheared). However, the engagement between the receiving portion 3 and the moving portion 4 is prevented so that the moving portion 4 is pushed upward by the cutting resistance generated at the time of nipping and cutting and the engagement state between the receiving portion 3 and the moving portion 4 is not released. An engagement holding mechanism 9 that holds the state is provided.

  The engagement holding mechanism 9 includes a rotation locking portion 10 provided in the receiving portion 3 and a locking portion 11 provided in the moving portion 4.

  Specifically, the rotation locking portion 10 is locked to the rotation portion 10A that is pivotally attached to the pivot attachment portion 13 provided at the front side end portion 3A of the receiving portion 3 so as to be tiltable and rotatable forward. The hook portion 10B protrudes upward and is provided with a locking portion abutting portion 14 with which the locking portion 11 of the moving portion 4 abuts. The rotating portion 10A is tilted forward and engaged. When the stop hook portion 10B is tilted forward, the front end portion 3A (tip surface) of the receiving portion 3 provided with the rotation locking portion 10 and the tip end of the locking hook portion 10B are provided. The distance between the engaging portion 11 and the engaging portion 11 is increased so that the engaging portion 11 can be inserted into the engaging portion 11, and the engaging portion abutting portion 14 is raised to a position where it can come into contact with the engaging portion 11.

  Furthermore, the rotation locking part 10 is provided with a foot operation part 12 for operating the tilting rotation of the rotation locking part 10 with a foot. Specifically, the foot operation part 12 Is configured to project toward the side of the rotation locking portion 10.

  More specifically, in the present embodiment, a plate-like foot contact portion 12A provided in an inclined state that rises forward and inclines toward the front end portion of the foot operation portion 12 is provided in this inclined shape. The rotation locking portion 10 is configured to tilt and rotate forward by operating the foot contact portion 12A so as to kick it forward with a foot.

  In addition, this foot operation part 12 is provided only on one side of the rotation locking part 10 so that it can be replaced, or the foot operation part 12 is provided on the side of the operator's dominant foot as a structure provided on both sides. Therefore, the operability can be further improved.

  Further, the locking portion 11 that engages and locks with the rotation locking portion 10 is formed in a hook shape on the tip side, and the hook-shaped tip portion 11A is placed downward on the front side end portion 4A of the moving portion 4. It is configured to hang down.

  Furthermore, the locking portion 11 of the present embodiment is configured to be movable in the vertical direction by the height adjusting mechanism 21.

  The height adjusting mechanism 21 includes a male screw portion 21A projecting from the base end portion of the locking portion 11 and an operation knob 21B formed with a female screw screwed into the male screw portion 21A. The male screw portion 21A provided in the locking portion 11 is inserted from the lower side into the tip protruding portion 22 protruding from the tip portion of the moving portion 4, and the male screw portion 21A protruding upward from the tip protruding portion 22 is operated. The locking part 11 is moved upward by screwing the part 21B, tightening and turning the operation knob 21B, and moving downward by loosening and turning.

  Further, in this embodiment, the positioning fixing mechanism 23 for positioning and fixing the locking portion 11 whose height position is adjusted by the height adjusting mechanism 21 is provided, and the positioning fixing mechanism 23 is provided on the locking portion 11. A vertically long through hole is formed, a female screw part is formed on the tip surface of the moving part 4, a fixing screw provided with an operation handle 24 is inserted into the through hole formed in the locking part 11, and the female screw of the moving part 4 The locking portion 11 is clamped and fixed between the fixing screw and the distal end surface of the moving portion 4 so as to be immovable and fixed by screwing the operating handle 24 and tightening the fixing screw. It is configured as follows.

  Further, in this embodiment, the moving part 4 is provided with an abutting part 25 which comes into contact with the L-shaped angle 1 sandwiched and fixed between the moving part 4 and the receiving part 3 from above or in a close proximity state. Specifically, the abutment portion 25 protrudes toward the side that is not cut off by pinching and cutting in a state where the receiving portion 3 and the moving portion 4 sandwich and fix the L-shaped angle 1 and is cut off. As a configuration in which the tip portion is in contact with or close to the upper surface of the L-shaped angle 1 that is not cut, the one that is not cut off at the time of nipping and cutting is prevented from floating upward and becoming inclined. The cutting blade moves perpendicularly to the L-shaped angle 1 so as to form a good cut surface.

  The operation and effect of the present embodiment configured as described above will be described along the work procedure when cutting the L-shaped angle 1 using the present embodiment.

  When cutting the L-shaped angle 1 using this embodiment, first, as shown in FIG. 3, the operating rod 7 is pulled upward to open and move the moving portion 4 to open the clamping and fixing portion 5. An opening operation is performed so that the L-shaped angle 1 that is the workpiece 1 is engaged and disposed in the engagement disposing portion 2 of the receiving portion 3.

  After engaging and disposing the L-shaped angle 1 of the engaging and disposing portion 2 of the receiving portion 3, the operating rod 7 is pushed downward to close and move the moving portion 4 to move the moving portion 4 to the receiving portion 3. The L-shaped angle 1 is sandwiched and fixed between the receiving portion 3 and the moving portion 4.

  As the moving part 4 approaches the receiving part 3, the engaging part 11 provided on the moving part 4 moves closer to the rotation engaging part 10 provided on the receiving part 3, and as shown in FIG. The tip of the locking part 11 comes into contact with the locking part contact part 14 of the rotation locking part 10 in the tilted state.

  When the locking portion 11 comes into contact with the tilted rotation locking portion 10, as shown in FIG. 5, the rotation locking portion 10 is pushed by the locking portion 11 and the rotation portion 10A is raised. The locking hook portion 10B moves from the tilted state to the upright state (upright state).

  When this rotation locking part 10 (locking hook part 10B) is in an upright state, the locking hook part 10B of this rotation locking part 10 is locked by pushing this rotation locking part 10. It will be in the state which can be latched with the hook-shaped front-end | tip part 11A of the part 11. FIG.

  In a state where the locking hook portion 10B of the rotation locking portion 10 and the hook-shaped tip portion 11A of the locking portion 11 can be locked, the operating rod 7 is rotated downward and the L-shaped angle 1 6, as shown in FIG. 6, the front side provided with the locking portion 11 of the moving portion 4 slightly moves upward due to the reaction when the moving portion side cutting blade 8 abuts against and presses the L-shaped angle 1. Thus, the hook-shaped tip portion 11A of the locking portion 11 is engaged and locked with the locking hook portion 10B of the rotation locking portion 10.

  When the locking hook portion 10B of the rotation locking portion 10 and the hook-shaped tip portion 11A of the locking portion 11 are engaged and locked, the upward movement of the moving portion 4 on the front side is suppressed, and the receiving portion is received. The engaged state between the part 3 and the moving part 4 is maintained.

  That is, in this embodiment, when the L-shaped angle 1 sandwiched and fixed by the clamping and fixing portion 5 starts to be cut, the rotation locking portion 10 of the receiving portion 3 and the locking portion 11 of the moving portion 4 are engaged and locked. As a result, the engagement holding mechanism 9 is locked, the engagement state between the receiving portion 3 and the moving portion 4 is held in an unreleasable state, and a force that pushes upward and biases the moving portion 4 during the cutting operation. Even if it acts, the moving part 4 does not move upward, and the sandwiching and fixing state of the L-shaped angle 1 by the sandwiching and fixing part 5 is well maintained, and a smooth cutting operation can be performed.

  When the cutting operation is completed and the operating rod 7 is turned upward to move the moving part-side cutting blade 8 upward, the upward biasing of the moving part 4 on the front side is released. The engagement locking state between the locking hook portion 10B of the dynamic locking portion 10 and the hook-shaped tip portion 11A of the locking portion 11 is released, and the rotation locking portion 10 can be tilted and rotated. State (non-locking state).

  As shown in FIGS. 7 and 8, in a state where the engagement locking state between the locking hook portion 10B of the rotation locking portion 10 and the hook-shaped tip portion 11A of the locking portion 11 is released, as shown in FIGS. Put the foot on the foot contact portion 12A of the foot operation portion 12 provided on the movement locking portion 10, and tilt the pivotal locking portion 10 by operating the foot so as to kick the foot contact portion 12A forward. When the moving operation is performed, the rotation locking portion 10 is in the original tilted state, and the lock of the engagement holding mechanism 9 is released.

  Since the engagement holding mechanism 9 is released, the holding / fixing portion 5 can be opened. Therefore, the operating rod 7 is moved upward to open and move the moving portion 4 to open the clamping / fixing portion 5. By operating, the clamping and fixing portion 5 is opened, and when the clamping and fixing portion 5 is opened, the L-shaped angle 1 that is engaged and arranged in the engagement and arranging portion 2 of the receiving portion 3 can be taken out. The L-shaped angle 1 can be taken out from the engagement arrangement portion 2 and the operation is completed.

  In this way, in this embodiment, the unlocking operation of the engagement holding mechanism 9 can be performed with the foot while the operator is standing, and therefore the operator needs to bend for the unlocking operation one by one. As a result, the bending and stretching movements of the worker during the cutting operation are reduced compared to the case of using a conventional device, and the burden on the operator's legs is reduced, so that the cutting operation can be performed efficiently. It becomes an epoch-making cutting device excellent in practicality that can be performed.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 To-be-cut object 2 Engagement arrangement | positioning part 3 Reception part 3A Front side edge part 4 Moving part 5 Clamping fixing | fixed part 6 Reception part side cutting blade 7 Operation rod 8 Moving part side cutting blade 9 Engagement holding mechanism
10 Rotation locking part
10A rotating part
10B Locking hook
11 Locking part
12 foot control
13 pivot
14 Locking part contact part

Claims (2)

  The receiving part is provided with an engaging part for engaging and disposing an object to be cut, and a moving part provided so as to be movable toward and away from the receiving part. An object to be cut is engaged and arranged, and the moving part is brought close to the receiving part to which the object to be cut is engaged and is engaged from above, and the moving part and the receiving part serve as the object to be cut. A clamping / fixing portion configured to sandwich and fix a cut object is provided, and a workpiece to be cut and fixed by the clamping / fixing portion is provided on the receiving portion-side cutting blade provided in the receiving portion, and the moving portion is provided with the moving portion. In the cutting apparatus configured to be able to be sandwiched and cut by a moving part side cutting blade provided so as to be movable toward and away from the receiving part side cutting blade by operation of an operating rod provided on the receiving part, the receiving part and the moving part An engagement holding mechanism that holds the engagement state between the receiving portion and the moving portion. A rotation locking portion provided so as to be able to be pivoted up and down, and a locking portion which is provided on either side and is locked by the rotation locking portion. By moving the locking portion closer, the locking portion relatively approaches and comes into contact with the tilted rotation locking portion, and pushes the rotation locking portion to stand up and rotate. The pivotal locking part that has been turned upright is engaged and locked with the locking part, or is engaged and locked by cutting the operating rod in a lockable state. It is configured to maintain the engagement state with the moving portion, and the rotation engagement portion is returned to the tilted state by engaging the rotation engagement portion with the rotation engagement portion. A cutting device characterized in that a foot operation part for operating a tilting and turning operation for releasing the lock with a foot protrudes toward a side of the turning and locking part. The rotation locking portion projects with a locking hook portion facing upward on a rotation portion that is pivotally attached to a pivoting portion provided at a front end portion of the receiving portion and is tiltable forward. The tilting state in which the locking portion abutting portion with which the locking portion abuts is provided, the pivoting portion tilting forward and the latching hook portion tilting forward In this case, the separation distance between the front end of the receiving portion and the locking hook portion extends to a separation distance through which the locking portion can be inserted, and the position of the locking portion contact portion is the locking portion. The locking portion is inserted between the locking hook portion of the tilted rotation locking portion and the front side end portion of the receiving portion, and is in the rising position. When the pivotal locking part is erected and turned upright by pushing the pivotal locking part in contact with the locking part abutting part at The locking hook portion engages and locks with the locking portion that has pushed the rotation locking portion, or enters the lockable state and engages and locks by operating the cutting operation of the operating rod. The cutting apparatus according to claim 1, wherein the engagement holding mechanism is in a locked state, and the engagement state between the receiving unit and the moving unit is held in an unreleasable state.

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