JP2013066979A - Grinding device for rotating round blade and grinding control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To grind a round blade for an appropriate grinding time by making grinding wheels come into contact with the round blade at an appropriate pressure without depending on an experience of a user, enable stable grinding, safely grind the round blade by making the grinding wheels come into contact with the round blade by using a control part without making the user directly touch the round blade, and eliminate the necessity of external electric power by providing a power generation part.SOLUTION: This grinding device for grinding the rotating round blade and grinding control method include: a surface side grinding wheel and a back face side grinding wheel which are used for grind the round blade; a grinding wheel moving mechanism moving the grinding wheels so as to make the grinding wheels come into contact with the round blade; a positioning sensor detecting a first position where the grinding wheels are not brought into contact with the round blade; the control part performing movement from the first position to a second position which permits contact with the round blade so as to perform grinding at a predetermined pressure for a predetermined grinding time; the power generation part using the rotation of the round blade; and an attachment part attached to the round blade.

Description

  The present invention provides an apparatus and a polishing method for polishing a round blade of a meat slicer mainly using a rotary round blade for cutting meat.

Conventionally, there has been a polishing apparatus for polishing a round blade of a meat slicer by attaching a polishing apparatus on which a grindstone is disposed to the slicer. When this conventional polishing apparatus is attached to a slicer with a bolt or the like, the grindstone comes into contact with the round blade, and when the round blade is rotated, the round blade is polished by the grindstone.
As another conventional example, there is a polishing apparatus described in Patent Document 1.
(For example, refer to Patent Document 1).

JP 2000-94278 A

In the conventional meat slicer polishing apparatus, the grinding wheel comes into contact with the round blade when the user attaches the polishing apparatus to the slicer and the user turns the driving tool such as a handle. The pressure and polishing time have been performed based on many years of user experience. In this polishing apparatus, the polishing pressure and time were changed every time the user was changed, and optimum polishing was not performed.
The polishing apparatus described in Patent Document 1 is also the same in that the user brings the grindstone into contact with the rotary blade with the handle and leaves it to the user's many years of experience.
In addition, these conventional polishing apparatuses may cause the user to be injured due to misuse because the user arbitrarily contacts the grindstone.

  Therefore, there has been a demand for a polishing apparatus that automatically attaches a grindstone to a round blade at a predetermined pressure when attached to a slicer, and that the grindstone does not contact the round blade after a predetermined polishing time has elapsed.

  Therefore, the polishing device for a rotating round blade in the present invention is a polishing device for polishing a rotating round blade, and moves the grindstone for polishing the round blade so that the grindstone can come into contact with the round blade. In response to the grindstone moving mechanism and a signal to start polishing, the grindstone moving mechanism moves from the first position where the grindstone does not contact the round blade to the second position where the grindstone contacts the round blade with a predetermined pressure. And a controller that moves the grindstone from the second position to the first position after a predetermined polishing time has elapsed.

  The grindstone is composed of a front-side grindstone that grinds the surface of the round blade and a back-side grindstone that grinds the back surface of the round blade. After moving the surface side grindstone from the first position that does not contact the surface of the surface to the surface side second position where the surface side grindstone contacts the surface of the round blade, the back surface side grindstone contacts the back surface of the round blade It is preferable to move the back surface side grindstone to the back surface side second position and then move the front surface side grindstone and the back surface side grindstone to the first position.

The grindstone moving mechanism is fixed to the drive motor, a feed screw connected to the drive motor, a feed block that is movably engaged in the longitudinal direction of the feed screw by forward and reverse rotation of the drive motor, and the feed block. The first position is detected by detecting the detected portion formed on the feed block with a positioning sensor and recognizing the position of the feed block. It is preferable.

  Also, a power generation roller that abuts near the center point of the surface of the rotating round blade and rotates in accordance with the rotation of the round blade, a power generation motor that generates power by the rotation of the power generation roller, and the power generation roller near the center of the rotating round blade It is preferable that a power generation arm that is in contact with the motor is provided, the drive motor is driven by electric power generated by the power generation motor, and is controlled by the control unit.

  Moreover, it is preferable that the attachment / detachment part which can be attached to the grinding | polishing position of the rotating round blade so that attachment or detachment is possible was provided.

  Further, the polishing control method of the rotating round blade in the present invention is a control method for polishing the rotating round blade with a grindstone, and is positioned while the grindstone is moved by the grindstone moving mechanism in response to a signal to start polishing. A first step of moving the grindstone to a first position where the grindstone does not contact the round blade by a sensor, a second step of moving the grindstone to a second position where the grindstone contacts the round blade with a predetermined pressure, and a predetermined polishing time And a third step of moving the grindstone from the second position to the first position after the passage.

  The grindstone is composed of a front-side grindstone that grinds the surface of the round blade and a back-side grindstone that grinds the back surface of the round blade. The positioning sensor has either the front-side grindstone or the back-side grindstone of either the front or back of the round blade. A first step of moving the front surface side grindstone and the back surface side grindstone to the first position, and the first position from the first position to the front surface side. The front surface side second step for moving the front surface side grindstone to the front surface side second position where the grindstone contacts the surface of the round blade, and the back surface side grindstone to the rear surface side second position where the rear surface side grindstone contacts the back surface of the round blade It is preferable to include a second step for moving the back surface side and a third step for moving the front surface side grindstone and the back surface side grindstone to the first position.

  In the second step on the front side and the second step on the back side, the remaining time was counted once as the number of times that the time set as the time for the grindstone to contact the round blade could be subtracted from the selected polishing time. It is preferable to carry out continuously the number of times added.

According to the first aspect of the present invention, the grindstone can be brought into contact with the round blade with an appropriate pressure without depending on the experience of the user, and the round blade can be polished with an appropriate polishing time, thereby stably polishing. be able to.
Further, by making contact between the grindstone and the round blade by the control unit, the user can polish the round blade safely without touching the round blade directly.

  According to the second aspect of the invention, the front and back surfaces of the round blade can be polished with a grindstone, and both sides of the round blade can be properly polished.

  According to the third aspect of the present invention, the front-side grindstone and the back-side grindstone can be brought into contact with the rotary round blade by forward rotation and reverse rotation of the drive motor, and the appropriate pressure can be obtained without depending on the user's experience. It becomes possible to polish stably by polishing time.

  According to the invention of claim 4, electric power is generated by the power generation roller and the power generation motor, and the movement and control of the grindstone can be performed by this power, and polishing can be performed without supplying power from the outside. Become.

  According to the fifth aspect of the present invention, the polishing apparatus can be attached to and detached from the round blade, and a plurality of round blades can be polished with one polishing apparatus.

According to the sixth aspect of the present invention, the grindstone can be brought into contact with the round blade with an appropriate pressure without depending on the user's experience, and the round blade can be polished with an appropriate polishing time, thereby stably polishing. be able to.
In addition, the contact between the grindstone and the round blade is performed by the control unit, so that the user can polish the round blade safely without touching the round blade directly.

  According to the seventh aspect of the present invention, the front and back surfaces of the round blade can be polished with a grindstone, and both sides of the round blade can be appropriately polished.

  According to the eighth aspect of the present invention, when a long time polishing is required, such as blade attachment, even if the grinding stone is brought into contact with the round blade at a predetermined pressure, the round blade is ground after a certain period of time. The pressure at the time of contact is not applied. Therefore, after a certain period of time has elapsed, the grindstone is again brought into contact with the round blade at a predetermined pressure, so that a certain pressure is continuously applied, and stable polishing becomes possible.

It is a perspective view which shows an example of the meat slicer which attaches the grinding | polishing apparatus of this invention, Comprising: (a) is the whole, (b) shows the state which removed the round blade accommodating part and exposed the rotary round blade. The front view which shows an example of the meat slicer which can attach the grinding | polishing apparatus of this invention. It is a polish device of the present invention, and is the whole perspective view showing the state where a defense wall was removed. The right view which shows the grinding | polishing apparatus of this invention. The state which attaches the grinding | polishing apparatus of this invention to a rotation round blade is shown, Comprising: (a) is a perspective view which shows the rotation round blade before attachment, (b) is a perspective view which shows the rotation round blade after attachment, (C) is the perspective view which showed the state after attaching from the front side. The perspective view which showed the feed block of the grinding | polishing apparatus of this invention from diagonally lower side. It is a grindstone moving mechanism of this invention, Comprising: The top view which shows the state which removed the upper surface. The right view which expands and shows the state which attached the grinding | polishing apparatus of this invention to the rotary round blade. The flow of the 1st step of the grinding | polishing control method of this invention is shown. The flow in the case of normal polishing among the second step and the third step of the polishing control method of the present invention is shown. The flow in the case of blade attachment among the 2nd step and the 3rd step of the polish control method of the present invention is shown.

The polishing apparatus of the present invention will be described with reference to the drawings.
1 and 2 show a meat slicer to which the polishing apparatus 9 is attached. FIGS. 3 and 4 are general views showing the polishing apparatus 9. FIG. 5 shows a state in which the polishing apparatus 9 is attached to the rotating round blade 7. FIG. 7 and 8 show a state in which the grindstone of the polishing apparatus 9 moves. 9, 10, and 11 show the flow of the polishing control method.

  The meat slicer 1 using the rotary round blade 7 for grinding | polishing with the grinding | polishing apparatus 9 of this invention is shown to Fig.1 (a). The rotating round blade 7 to be polished by the polishing apparatus 9 is preferably used for the meat slicer 1, but a slicer for cutting other foods such as vegetables and a slicer for manufacturing a workpiece such as woodworking. It may be used for.

  The meat slicer 1 according to this embodiment includes a round blade storage unit 2 that stores a rotating round blade 7, a meat box conveyor 3 that supplies uncut meat to the round blade storage unit 2, and a conveyor that conveys the cut meat. 4 and a mounting table 5.

FIG.1 (b) removes the door of the round blade accommodating part 2, the meat box conveyor 3, and the conveyance conveyor 5 from the meat slicer 1 of Fig.1 (a). A mounting board 6 and two rotating round blades 7 and 7 are housed inside the round blade housing portion 2. The rotary round blades 7 and 7 are attached to a mounting board 6 that is rotatably attached to a round blade installation base 8. As the mounting plate 6 rotates, the rotating round blades 7 and 7 also rotate to cut meat.
In addition, as for rotary round blades 7 and 7, back surface 7b, 7b appears in the near side of FIG.1 (b).

The polishing apparatus of the present invention is not limited to the one that polishes the rotating round blades 7 and 7 attached to the mounting board 6, and can be used for a slicer using other rotating round blades.
For example, as shown in FIG. 2, one rotating round blade 92 arranged on the installation table 94 and a meat box 93 that conveys meat to the rotating round blade 92 while continuously sliding in a direction facing the rotating round blade. The meat slicer 91 can also be used.

Next, a polishing apparatus 9 of the present invention is shown in FIGS.
The polishing apparatus 9 includes a grindstone moving mechanism 21, a front surface side grindstone 11, a back surface side grindstone 12, a power generation unit 31, a control unit 41, and an attachment / detachment unit 51.

  Both the front surface side grindstone 11 and the back surface side grindstone 12 are cylindrical, and the peripheral portion thereof is a grindstone that can be polished, and is rotatably supported by the front surface side grindstone support rod 24 and the back surface side grindstone support rod 25. Yes. The back surface side grindstone 12 is disposed below the upper surface 17 of the polishing moving mechanism 9 and in a direction perpendicular to the upper surface 17, whereas the front surface side grindstone 11 is disposed behind the back surface side grindstone 12 (see FIG. 4). (Right side) and the back side (back side in FIG. 4), and is slightly inclined with respect to the surface side grindstone 11. This inclination angle is about 15 to 30 degrees.

As shown in FIG. 8, the inclined round blade 7 of the meat slicer 1 generally has only the surface 7 a inclined and sharpened, so that only the surface side grindstone 11 is inclined. It is.
In addition, when inclining both the surface 7a and the back surface 7b of the round blade 7, both the surface side grindstone 11 and the back surface side grindstone 12 are respectively inclined.

  Moreover, as shown in FIG. 4, you may attach the defense plate 29 made from an acrylic so that the circumference | surroundings of the surface side grindstone 11 and the back surface side grindstone 12 may be covered. It is possible to prevent small pieces of grindstones and round blades from being scattered when the protective plate 29 is polished.

As shown in FIGS. 3, 4, and 7, the grindstone moving mechanism 21 includes a drive motor 22, a feed screw 26, a feed block 23, a front surface side grindstone support rod 24, and a back surface side grindstone support rod 25. Become.
The feed block 23 is engaged with a feed screw 26 at a protruding portion above the feed block 23, and the feed screw 26 is connected to the drive motor 22. The forward rotation and reverse rotation of the drive motor 22 cause the feed screw 26 to rotate forward and reverse, and the feed block 23 engaged according to the threading groove of the feed screw is in the longitudinal direction of the feed screw 26 (the direction of the arrow line B in FIG. 7). )

  As shown in FIG. 7, the back surface side grindstone support rod 25 is connected to the feed block 23, and the front surface side grindstone support rod 24 is also fixed to the feed block, so that these also move as the feed block 23 moves. Thereby, the front-side grindstone 11 and the back-side grindstone 12 can be moved by forward and reverse rotation of the drive motor 22.

As shown in FIG. 6, the feed block 23 is disposed on the table 27, but a rail 28 is attached to the table 27, and the rail 28 facilitates movement.
A positioning sensor 42 is attached to the base 27 so as to be positioned below the feed block 23. On the other hand, a groove 43 is formed on the lower surface of the feed block 23, and the first position can be detected by detecting the groove 43. If the positioning sensor 42 is positioned below the groove 43, the groove 43 becomes a first position where the front surface side grindstone 11 and the back surface side grindstone 12 do not contact the front surface 7a and the rear surface 7b of the rotary round blade 7, respectively. So that it is formed. Thereby, the first position can be detected by the positioning sensor 42.

As shown in FIGS. 3 and 4, the power generation unit 31 includes a power generation roller 32, a power generation motor 33, and a power generation arm 34.
The power generation roller 32 is made of resin and has a cylindrical shape with a tapered tip, and is rotatably attached to a vertical wall 38b at the lower end of the power generation arm 34. The power generation roller 32 is attached to the inside (right side in FIG. 4) of the vertical wall 38b at the lower end of the power generation arm 34, and the power generation motor 33 is attached to the outside (left side in FIG. 4) of the vertical wall 38b.

The power generation roller 32 is pivotally fixed to the power generation arm 34 by a rotation shaft 35, and the rotation of the power generation roller 33 is transmitted to the power generation roller 32 through the rotation shaft 35 and can be generated by the power generation roller.
When power is generated by the power generation roller, the power is sent to the drive motor 22 and the control unit 41 through a power transmission line (not shown). Since the drive motor 22 and the control unit 41 are operated by this electric power, the polishing apparatus 9 can be operated without supplying electric power from the outside.

  The power generation arm 34 is rotatably attached to the upper surface 17 in the vicinity of the upper end thereof, and the upper end thereof is a vertical wall 38a extending in a vertical direction from the attachment position with the upper surface 17. A pressing portion 36 is formed on the upper surface 17, and a force that pushes the vertical wall 38 a of the power generation arm 34 outward (leftward in FIG. 4) acts by the pressing rod 37 of the pressing portion 36.

  The power generation arm 34 extends obliquely outward from the attachment position with the upper surface 17 (left side in FIG. 4), bends to about 90 degrees, and further bends in the vertical direction at the lower end, An end vertical wall 38b is formed. The bending of the power generation arm 34 is not limited to such a shape, and may have a plurality of bent portions or a curved shape.

  Due to the shape of the power generation arm, the pressure rod 37 of the pressing portion 36 is pressed to push the vertical surface 38a at the upper end of the power generation arm 34 to the outside (left side in FIG. 4), and the power generation is attached to the upper surface 17 so as to be rotatable. The arm 34 receives a force by which the vertical surface 38b at the lower end thereof is pushed inward (right side in FIG. 4). When the power generation roller 32 is attached to the vertical surface 38b, the power generation roller 32 is pressed against the rotating round blade 7, and the state can be maintained.

  As shown in FIG. 5C, the length of the power generation arm 34 is such that the power generation roller 32 is attached to the center point 7 c of the back surface 7 b of the rotating round blade 7 when the polishing device 9 is attached by the attaching / detaching portion 51. A length that can be used is required.

  As shown in FIGS. 3 and 4, a control unit 41 containing a box control circuit and the like is disposed in the central portion of the polishing apparatus 9. The control unit 41 is attached to the back surface 18 of the polishing apparatus 9.

  As shown in FIGS. 3 and 4, the attaching / detaching portion 51 is located on the right side (the right side in FIG. 4) of the polishing apparatus 9. The attaching / detaching portion includes hooks 52 and 52 formed by partially removing between the back surface 18 and the side surfaces 19 and 19, and an attaching / detaching rod 53 attached to the back surface.

  The detachable rod 53 is attached so as to penetrate between the locking pieces 54, 54 protruding in the vertical direction from the back surface 18 from the upper and lower positions of the back surface 18. The detachable rod 53 has a lower end 55 threaded, and a grip 56 is attached to the upper end. When the user picks up the grip portion 56 and turns it, the screw at the lower end 55 rotates.

Next, attachment / detachment of the polishing apparatus 9 will be described.
FIG. 5A shows the back side of the rotary round blade 7 and the mounting board 6 shown in FIG.
The rotating round blade 7 is pivotally attached to the tip of a support arm 61 extending from the round blade mounting base 8 at the center of the surface 7a. The rotating round blade 7 is supplied with electric power from the outside and rotates around its center point (not shown) by the operation of a motor incorporated in the meat slicer 1.

  Protruding clasps 62 and 62 are attached to the upper surface 66 and the lower surface 67 of the support arm 61. In addition, a locking piece 63 is formed on the surface 65 of the support arm 61 so as to stand vertically from the surface, and a circular locking hole 64 is formed in the center of the locking piece 63.

  As shown in FIG. 5B, the polishing device 9 is attached along the longitudinal direction of the support arm 61. It attaches to the upper surface 66 and the lower surface 67 of the support arm 61 so that the side surfaces 19 and 19 of the grinding | polishing apparatus 9 may cover. At this time, the clasps 62, 62 of the support arm 61 are in positions to engage with the hooks 52, 52 of the polishing apparatus 9, and can be positioned by this.

  Further, at the position where the clasps 62, 62 and the hooks 52, 52 are engaged, the engaging piece 54 of the polishing apparatus 9 and the engaging piece 64 of the support arm 61 are arranged to engage with each other. In this state, when the gripping portion 56 of the attaching / detaching rod 53 is rotated, the screw at the lower end 55 of the attaching / detaching rod 53 is rotated and inserted into the locking hole 63 of the support arm 61. Thereby, the polishing apparatus 9 can be attached to the support arm 61.

  When removing the polishing apparatus 9 from the support arm 61, if the gripping portion 56 is rotated in the reverse direction, the screw at the lower end 55 of the detachable rod 53 is rotated in the reverse direction and is removed from the locking hole 63 of the support arm 61. Accordingly, the polishing apparatus 9 can be detached from the support arm 61 and can be detached.

  FIG. 5C shows a state in which the polishing apparatus 9 is attached to the support arm 61 from the back surface 7 b side of the rotating round blade 7. As shown in FIG. 8, when the polishing apparatus 9 is attached, the tip of the cutter of the rotary round blade 7 is located between the front side grindstone 11 and the back side grindstone 12. This position is the polishing position.

  As shown in FIG. 5C, the power generation roller 32 of the power generation unit 31 is joined to the center point 7 c of the back surface 7 b of the rotary round blade 7. By the pressing of the pressing portion 36, the power generation roller 32 is pressed in the direction of the rotary round blade 7 (the direction of the arrow line A in FIG. 5C), and the state where it is joined to the center point 7c of the rotary round blade 7 is maintained. . In this state, the power generation roller 32 is also rotated by the rotation of the rotary round blade 7, and power is generated by the power generation motor 33.

Next, a polishing method by the polishing apparatus 9 will be described.
FIG. 9 shows the first step of the control method by the polishing apparatus.
When the user presses a switch (not shown) for starting the operation of the meat slicer 1 with the polishing apparatus 9 attached to the polishing position, the rotating round blade 7 rotates and power is supplied to the polishing apparatus 9 by the power generation unit 31. Then, the start switch of the polishing apparatus 9 is automatically turned on. At this time, the meat slicer 1 is configured such that only the rotary round blade 7 rotates and the mounting board 6 does not rotate.
The timer before operation is activated, and the polishing apparatus 9 is operated after a timer time of several seconds elapses. The reason why the timer is activated after the elapse of the timer is to secure the safety by taking the time for the user to release the hand, and to store the generated power in the capacitor.

Next, the front surface side grindstone 11 and the back surface side grindstone 12 are moved to the first position.
The first position is a position where neither the front surface side grindstone 11 nor the back surface side grindstone 12 is in contact with the front surface 7a or the rear surface 7b of the rotary round blade 7, and preferably both are of the same degree from the rotary round blade 7. A position that is far away.

First, when the polishing apparatus 9 is attached and the groove 43 can be detected by the positioning sensor 42, the positioning sensor is turned OFF, and the grindstone moving mechanism 21 is not operated and is in the first position.
However, if the positioning sensor 42 is not at the position where the groove 43 is detected, the drive motor 22 is reversed. When the drive motor 22 is reversed, the back surface side grindstone 12 moves in the direction of the rotating round blade 7, and the front surface side grindstone 11 moves in a direction away from the rotating round blade 7. At this time, the position may be a position detected by the positioning sensor, but if it is not detected, the drive motor 22 is reversed until the limit time elapses or the drive motor 22 detects an overcurrent. In the first reverse rotation of the drive motor 22, the limit time is prioritized over the overcurrent detection.

Here, the limit time is a preset travel time.
The case where the drive motor 22 detects an overcurrent is to detect an overcurrent that occurs when the grindstone contacts the rotating round blade 7 with a predetermined pressure. The predetermined pressure refers to a case where the rotary round blade 7 is contacted with a pressure of about 3 kg.
The predetermined pressure may be changed depending on the roughness of the grindstone, but when a diamond grindstone is used, the pressure is 5 kg or less, preferably 3 kg.
When only one surface of the rotary round blade 7 is bladed, the back-side grindstone 12 does not need to be polished as much as the front-side grindstone 11, so the pressure is 2 kg or less, preferably about 1.5 kg. It is preferable that

Thereafter, after a predetermined time has elapsed, the drive motor 22 is rotated forward to move the front surface side grindstone 11 toward the rotating round blade 7 and the back surface side grindstone 12 away from the rotating round blade 7, and a positioning sensor. If 42 detects the groove | channel 43, the surface side grindstone 11 and the back surface side grindstone 12 will exist in a 1st position. Also in this case, if overcurrent is detected or the limit time elapses, the forward rotation of the drive motor 22 is stopped.
Then, the drive motor 22 is reversed again, and if the positioning sensor 42 detects or the limit time has elapsed, the reverse rotation of the drive motor 22 is stopped.
This position is the first position.

Next, the second step and the third step on the front side and the back side will be described.
First, the user selects normal polishing or blade attachment.
Ordinary polishing refers to polishing a blade that has been used. Blade attachment refers to applying a blade to a round blade that has not yet been attached, and generally requires a large amount of polishing on the front side.

  As shown in FIG. 10, when normal polishing is selected, first, the drive motor 22 is rotated forward to move the surface side grindstone 11 from the first position toward the rotary round blade 7. And when the surface side grindstone 11 contacts the surface 7a of the rotary round blade 7 and becomes a pressure of about 3 kg, the drive motor 22 detects an overcurrent, and the forward rotation of the drive motor 22 stops. Also at this time, it is sufficient that the limit time elapses. The position where the surface side grindstone 11 contacts the surface 7 a of the rotary round blade 7 is the second position on the surface side of the surface side grindstone 11.

A forward sharpening time is set in advance, and when the forward sharpening time elapses, the drive motor 22 is reversed to move the front side grindstone 11 away from the rotary round blade 7 and the rear side grindstone 12 is rotated round. Move to approach the blade 7.
Also in this case, as in the normal rotation of the drive motor 22, the drive motor 22 is reversed until the drive motor 22 detects an overcurrent or the limit time elapses, and the back surface side grindstone 12 is placed on the back surface 7b of the rotary round blade 7. Contact with a pressure of about 5 kg. The position where the back surface side grindstone 12 contacts the back surface 7 b of the rotary round blade 7 is the second position on the back surface side of the back surface side grindstone 12.

  Then, the sharpening time for reverse rotation is set in advance, and when the sharpening time for reverse rotation elapses, the drive motor 22 is rotated forward, and the positioning sensor 42 is moved to the first position where the groove 43 is detected. Is stopped, the operation end LED is turned on, and the operation is completed.

It is desirable to set the forward rotation sharpening time set in advance according to the frequency of polishing by the user. In the case of normal polishing, such as when polishing every day or when polishing every two days, about 10 seconds is desirable. Therefore, the predetermined time is generally about 10 seconds.
However, in the case of polishing once a week, the polishing time should be 20 to 30 seconds, and it is necessary to set the polishing time appropriately.

The reversing sharpening time is preferably about 2 seconds. This is because the rotating round blade 7 has the shape of a blade sharpened from only one side as shown in FIG. 8, and therefore the reverse rotation is sufficient to remove burrs and the like generated by polishing the surface 7a.
In addition, when sharpening from both of the blades, it is preferable to set the sharpening time for reverse rotation to the same level as that for normal rotation.

As shown in FIG. 11, when the blade is selected, the first step is the same as that of normal polishing, but the number of polishing is different.
In the case of blade attachment, it is necessary to increase the polishing time of the surface-side grindstone 11, and the user selects a sharpening time between 0 to 30 minutes, but approximately 20 to 25 minutes is preferable. The time selected here is the selected sharpening time for forward rotation.

  On the other hand, after about 10 minutes have passed since the surface-side grindstone 11 contacts the surface 7a of the rotary round blade 7, the surface 7a of the rotary round blade 7 is scraped and no longer comes into contact with the original pressure. Therefore, after 10 minutes, it is necessary to bring the surface side grindstone 11 into contact with the surface of the rotating round blade 7a again. Therefore, the time set as the time for the grindstone to contact the round blade is 10 minutes. This set time may be about 7 to 12 minutes, but should preferably be 10 minutes.

Therefore, in the case of blade attachment, if the selected sharpening time is, for example, 25 minutes, the drive motor 20 rotates in the forward direction, and the surface side second wheel that makes the surface side grindstone 11 contact the surface 7a of the rotary round blade 7 from the first position. Until the drive motor detects an overcurrent.
Then, the number of times that the set time (10 minutes) can be subtracted from the selected sharpening time (25 minutes in the present embodiment) and the remaining time (5 minutes in the present embodiment) as one time, a total of 3 Polish once.

Therefore, after polishing the front surface 7a with the front surface side grindstone 11 for a set time of 10 minutes, the drive motor 22 is reversed to polish the back surface 7b. If the remaining time of the selected sharpening time (15 minutes in this embodiment) is longer than the set time of 10 minutes, the surface 7a is again ground for 10 minutes of the set time with the surface side grindstone 11, and the drive motor 22 is reversed. The back surface 7b is polished.
When the remaining time of the selected sharpening time (5 minutes in this embodiment) is less than 10 minutes of the set time, the surface 7a is polished with the surface side grindstone 11 only for the remaining time, and the drive motor 22 is reversed. Then, the back surface 7b is polished.
The normal grinding is the same as the movement of other grindstones.

  As a result, the surface 7a can be brought into contact with the surface 7a at a predetermined pressure every 10 minutes of the set time, and efficient blade attachment becomes possible. The pressure that contacts the front surface 7a and the rear surface 7b of the rotating round blade 7 is the same as that in normal polishing.

DESCRIPTION OF SYMBOLS 1 ... Meat slicer, 7 ... Rotary round blade, 7a ... Front surface, 7b ... Back surface, 9 ... Polishing apparatus, 11 ... Surface side grindstone, 12 ... Back surface side grindstone, 21 ... Grinding wheel movement mechanism, 22 ... Drive motor, 31 ... Electric power generation , 41 ... control unit, 42 ... positioning sensor, 51 ... detachable part

Claims (8)

A polishing apparatus for polishing a rotating round blade,
A grindstone for polishing a round blade;
A grindstone moving mechanism for moving the grindstone so that it can come into contact with the round blade,
Upon receiving a signal to start polishing, the grindstone moving mechanism moves the grindstone from a first position where the grindstone does not contact the round blade to a second position where the grindstone contacts the round blade with a predetermined pressure, and then performs predetermined polishing. After the elapse of time, a control unit that moves the grindstone from the second position to the first position;
A rotary round blade polishing apparatus comprising: The grindstone consists of a front-side grindstone that grinds the surface of the round blade and a back-side grindstone that grinds the back surface of the round blade.
The control unit moves from the first position where the front-side grindstone and the back-side grindstone do not contact any surface of the round blade to the second surface-side position where the front-side grindstone contacts the surface of the round blade. After moving the front side grindstone, move the back side grindstone to the second side on the back side where the back side grindstone contacts the back side of the round blade, and then move the front side grindstone and the back side grindstone to the first position. The rotary round blade polishing apparatus according to claim 1, wherein The grindstone moving mechanism includes a drive motor,
A feed screw connected to the drive motor;
A feed block engaged so as to be movable in the longitudinal direction of the feed screw by forward rotation and reverse rotation of the drive motor;
It consists of a front side grindstone support bar and a back side grindstone support bar fixed to the feed block,
3. The rotary round blade polishing apparatus according to claim 2, wherein the first position is detected by detecting a detected portion formed on the feed block with a positioning sensor and recognizing the position of the feed block. . A power generation roller that abuts near the center point of the surface of the rotating round blade and rotates in accordance with the rotation of the round blade;
A power generation motor that generates power by rotation of the power generation roller;
It has a power generation arm that contacts the power generation roller near the center of the rotating round blade,
4. The polishing apparatus for a rotating round blade according to claim 3, wherein the driving motor is driven by the electric power generated by the power generation motor and is controlled by the control unit.   The polishing apparatus for a rotating round blade according to any one of claims 1, 2, 3, and 4, wherein an attaching / detaching portion that can be detachably attached to a polishing position of the rotating round blade is provided. A control method for polishing a rotating round blade with a grindstone,
A first step of moving the grindstone to a first position where the grindstone does not contact the round blade by the positioning sensor while the grindstone is moved by the grindstone moving mechanism in response to a signal to start polishing;
A second step of moving the grindstone to a second position for contacting the round blade with a predetermined pressure;
And a third step of moving the grindstone from the second position to the first position after elapse of a predetermined polishing time. The grindstone consists of a front-side grindstone that grinds the surface of the round blade and a back-side grindstone that grinds the back surface of the round blade.
The positioning sensor consists of a back surface side positioning sensor that detects a first position where the front surface side grindstone and the back surface side grindstone do not contact any of the front and back surfaces of the round blade,
A first step of moving the front surface side grindstone and the back surface side grindstone to the first position;
A surface side second step of moving the surface side grindstone from the first position to the surface side second position where the surface side grindstone contacts the surface of the round blade;
Back side second step of moving the back side grindstone to the back side 2nd position where the back side grindstone contacts the back side of the round blade;
Thereafter, a third step of moving the front surface side grindstone and the back surface side grindstone to the first position;
The grinding | polishing control method of the rotary round blade of Claim 6 characterized by the above-mentioned.   In the second step on the front surface side and the second step on the back surface side, the number of times that the remaining time is counted as one time can be subtracted from the selected polishing time to the number of times that the time set as the time when the grindstone contacts the round blade can be subtracted. The polishing control method for a rotating round blade according to claim 7, wherein the polishing is performed continuously for the number of times added.

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