JP2008253191A - Rotating drum type peeling machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new rotating drum type peeling machine, while utilizing an original form (indeterminate form), as it is, of an object to be treated, such as root vegetables, surely performing whole peeling, and eliminating as much as possible the situation where fruits are cut wastefully. <P>SOLUTION: This rotating drum type peeling machine 1 has as the main constituting element, a rotary drum 2 which comprises a drum body 21 and a cutting blade 22. The machine comprises setting an attitude changing body 3, such as a screw 30 installed, substantially along the rotation center of the drum in a treatment space R, in the drum body 21 extending through substantially the entire length of the drum, and variously making the attitude of an object (A) to be treated varied with the drum body 21 and the attitude changing body 3 during peeling operation; while the object (A) to be treated in the treatment space R is subjected to thinly and thoroughly scraping away the surface of the object (A) to be treated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a peeling machine using vegetables (root vegetables) and fruits as objects to be processed, and in particular, to ensure that the entire skin is peeled off according to the original shape (undefined shape) of the objects to be processed. In addition, the present invention relates to a novel rotating drum type peeling machine that eliminates as much as possible the situation where fruit is cut unnecessarily.

  A plurality of peeling machines have been devised and put into practical use as devices for automatically peeling vegetables and fruits (see Patent Documents 1 and 2, for example). Among these, for example, Patent Document 1 is an application related to the present applicant, and while dropping an object to be processed such as taro along an arc-shaped conveyance path, the skin is peeled off with a cutting blade, and the object to be processed is almost completely removed. It is shaped into a sphere. This allows the surface (skin) of the object to be processed to be peeled off completely without being left uncut, and it is finished in a nearly spherical shape, so that the finished state is beautiful and beautiful, and has received a good evaluation in the market. However, this skinning machine is a method suitable only when it is desired to shape the workpiece into a sphere, and when the workpiece does not have to be finished into a sphere, that is, the shape after peeling (the shape of the workpiece) It is not necessarily suitable when it is more important to peel the skin evenly overall. For this reason, when not sticking to the final shape, the cutting method of Patent Document 1 has a tendency to excessively cut the fruit of the object to be processed, and the yield is not necessarily good.

  In Patent Document 2, a screw is provided concentrically inside a cutting blade corresponding to a rotating drum, and a workpiece received in the drum (cutting blade) is fed with a screw that rotates in a direction opposite to the cutting blade. The skin of the object to be processed is cut with a cutting blade. However, with such a cutting technique, it is difficult to uniformly cut the workpiece as a whole, and shaving unevenness often occurs.

That is, the object A to be treated such as potato has an indefinite shape because it is a natural product, protrudes in a certain direction (so-called an elliptical shape), or stands out particularly in a portion having surface irregularities. In the state, for example, as shown in FIG. 9A, a part that is easily grounded and a part that is difficult to ground are generally generated. For this reason, in the cutting method as in Patent Document 2, the portion of the workpiece A that contacts the cutting blade (the inner peripheral surface of the drum) hardly changes, and the portion that does not easily contact the cutting blade does not peel off. Was real.
Further, if such cutting is performed on the workpiece A for a long time, the uncut portion itself may be reduced, but in that case, a part of the workpiece A (a portion that is easily grounded) is inevitably required. As a result, the yield was deteriorated.

Thus, it is extremely difficult to develop an automatic machine (peeling machine) that can uniformly peel the entire surface while maintaining the irregular shape of the workpiece, because the workpiece A has an irregular shape. Actually, there is no practical thing as an automatic machine yet.
JP 2003-275994 A JP 2004-33 A

  The present invention has been made in view of such a background, and is capable of stripping the surface of an irregularly shaped object to be processed evenly on the entire surface without leaving uncut, thereby improving the yield. In addition, the present inventors have attempted to develop a new peeling machine that can sufficiently cope with the difference in the size of the object to be processed and the difference in unevenness of the surface of the object to be processed.

  That is, the rotary drum-type skinning machine according to claim 1 is mainly composed of a rotary drum comprising a drum body rotatably supported and a cutting blade attached to a side body of the drum body. In the peeling apparatus in which the surface of the object to be processed is cut by the cutting blade by rotating the rotating drum in a state where the object to be processed is put into the processing space in the drum body, the apparatus includes the processing space, A posture changing body approximately along the rotation center of the drum main body is provided over almost the entire length of the drum main body, and when the workpiece is cut, the drum main body and the posture changing body are covered by the drum main body and the posture changing body during the transfer in the processing space. It is characterized in that the posture of the workpiece is changed variously, and the surface of the workpiece is scraped off almost uniformly.

  According to a second aspect of the present invention, in addition to the requirement of the first aspect, the posture changing body is a screw having a blade formed in a spiral shape with respect to the shaft portion, The inside is characterized in that this screw is paired with the drum body and is rotated in a direction in which the workpiece is raised along the inner peripheral surface of the drum.

  According to a third aspect of the present invention, in addition to the requirements of the first or second aspect, the posture changing body is provided at a position shifted from a position just below the rotation center of the rotary drum to the front side in the rotation direction. It is characterized by this.

  According to a fourth aspect of the present invention, in addition to the requirements of the first, second, or third aspect, the rotary drum is provided with a lift bar on the inner peripheral surface of the drum main body, and the drum main body rotates. Thus, the object to be processed located near the bottom is lifted.

  Moreover, in addition to the requirements of the first, second, third, or fourth aspect, the rotary drum-type peeling machine according to claim 5 has a scraping body for scraping off the workpiece that has pierced the cutting blade. It is characterized by being provided in a fixed state.

  According to a sixth aspect of the present invention, in addition to the requirements of the first, second, third, fourth, or fifth aspect, the cutting blade is a blade-like shape provided along the longitudinal direction of the rotary drum. In addition, when the cutting blade is attached, the cutting allowance is attached to be adjustable.

  According to a seventh aspect of the present invention, in addition to the requirements of the first, second, third, fourth, fifth, and sixth aspects, the workpiece to be put into the processing space of the rotary drum has an indefinite shape. In addition, the skinning operation is characterized in that the surface of the object to be processed is cut almost uniformly as a whole so that the indefinite shape of the object to be processed is maintained.

The rotary drum-type skinning machine of the present invention can solve the above problems by using the configuration of the invention described in each of the claims.
That is, according to the first aspect of the present invention, since the posture changing body is provided inside the rotating drum having the cutting blade on the circumferential surface of the body portion, the workpiece is sufficiently stirred during the transfer, and various postures are obtained. As a result, the surface of the object to be processed can be shaved almost uniformly.

  Further, according to the invention described in claim 2, in order to use the screw in which the blades are spirally formed with respect to the shaft portion as the posture change body, for example, the object to be processed after ascending along the inner peripheral surface of the drum It can be supported by screw blades (grooves) and shafts, so that the posture of the workpiece can be effectively changed not only to the normal permanent posture but also to the standing posture and the inclined posture. Can be cut evenly.

  According to the third aspect of the present invention, since the posture changing body is provided by being shifted from the rotation center of the rotating drum or a position directly below the rotating drum, the space immediately below the rotation center of the rotating drum can be effectively utilized as the processing space. In addition, even if the object to be processed is the same potato, for example, the size may vary greatly depending on the time, place of production, growth conditions, etc., even in such a case, a single peeler should be used. And the versatility of the peeling machine can be improved. In other words, if the posture changing body is provided at the same position as the central axis of the rotating drum, the workpiece having a size about the radius of the rotating drum cannot necessarily be accommodated in the rotating drum, It cannot be cut.

  Further, according to the invention described in claim 4, the shape, size, weight with respect to the bulk (specific gravity), properties such as slime, etc. are different, and the posture changing action (blow) of the workpiece is reduced. Even in this case, by providing a lift bar on the drum inner peripheral surface, the workpiece to be processed located near the bottom of the rotating drum can be lifted (raised). Thereby, it is possible to promote exposure of the object to be processed in the drum, to activate the posture change, and to uniformly cut the surface of the object to be processed described above.

  According to the invention described in claim 5, since the scraped body is provided, for example, the object to be processed stuck into the cutting blade can be efficiently removed, and the subsequent cutting can be performed smoothly.

  Further, according to the invention described in claim 6, in order to provide a blade-shaped cutting blade so that the cutting allowance can be changed as appropriate, the cutting allowance dimension is changed in accordance with, for example, the size or property of the workpiece. Therefore, the skinning operation can be performed under an optimized condition that evenly cuts the surface of the workpiece while considering the yield.

  According to the seventh aspect of the present invention, since the object to be processed having an indefinite shape is subjected to the skinning operation in a state in which this shape is maintained, the surface of the object to be processed is not left uncut and has a high yield. be able to.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention includes one described in the following examples, and further includes various methods that can be improved within the technical idea.

  First, the outline (principle) of the rotating drum type peeling machine will be described. As described above, the rotary drum-type peeling machine is attached to the drum body of the drum while rotating the drum A into which the workpiece A has been placed, and rotating the workpiece A on the drum inner circumferential surface. This is an apparatus for scraping the surface (skin) of the workpiece A with a cutting blade. In the following description, taro or potato is mainly assumed as the object to be processed A, but other root vegetables or fruits can be applied as the object to be processed A. In particular, according to the present invention, the surface of the workpiece A having an indefinite shape is substantially maintained, and the surface of the workpiece is uniformly peeled as a whole so that the skinning operation can be performed with a high yield. For this purpose, it is important that the workpiece A is reversed in various directions in the rotating drum during the transfer to take various postures. Therefore, first, the posture of the workpiece A is defined. To do.

First, the state shown in FIG. 9 (a) is a posture in which the workpiece A naturally takes its state when the workpiece A having an indefinite shape is placed on the drum inner peripheral surface or a horizontal plane. “Permanent posture”. In this permanent posture, a portion that is easily grounded and a portion that is difficult to ground are generated on the placement surface (for example, a table). .
Further, when the workpiece A is an ellipse (in two dimensions, an ellipse), the axis corresponding to the long axis is the axis j of the workpiece A, and the portions corresponding to both ends of the axis j are processed. Let it be the end t of the object A. Further, a portion having a large actual bulge in the vicinity of the central portion of the shaft j is defined as a trunk portion d, and a portion from the trunk portion d to the end portion t is defined as an intermediate portion m. In the permanent posture, the axis j of the workpiece A usually forms a substantially horizontal direction, and at this time, the trunk portion d often serves as a ground contact portion.

On the other hand, with respect to such a standing posture, the posture shown in FIG. 9B, that is, the posture in which the axis j is oriented substantially vertically and the top and bottom in the standing posture is oriented almost horizontally is referred to as “standing posture”. In other words, this is a posture in which the workpiece A stands up.
In addition, the posture shown in FIG. 9C is an intermediate posture between the standing posture and the standing posture with the axis j inclined, and this is referred to as an “inclined posture”. Note that the workpiece A normally does not take the above-described standing posture or tilting posture.

  In the present invention, during the transfer (during the cutting operation), the workpiece A is changed to various postures such as a standing posture, a standing posture, and an inclined posture. In other words, the shaft of the workpiece A during the transfer is changed. It is to change j in various directions. Incidentally, in Patent Document 2 described above, there is a screw, which is exclusively responsible for the transporting action of feeding the workpiece A. For this reason, in Patent Document 2, even if the workpiece A rolls during the transfer, the roll rolls in a substantially stationary posture, that is, even though the axis j may be shaken, the shake of the axis j is almost horizontal. Therefore, it is considered that it was difficult to cut the workpiece A evenly as a whole because the body portion d serving as the ground contact surface was mainly cut during rolling.

From the basic structure as described above, the rotary drum-type peeling machine 1 of the present invention also includes a rotary drum 2 provided with a cutting blade on the body as shown in FIGS. Also, the posture changing body 3 (here, the screw 30 is applied as an example) is provided inside the rotary drum 2, and this is one of the major features of the present invention.
In the present specification, the portion of the workpiece A to be cut with a peeling machine is mainly described as “surface”. For example, when the taro is the workpiece A, the outermost hard skin (outer shell) ) Is roughly peeled off in advance and put into a peeling machine in this state, and the surface of the object A to be processed, for example, the fruit which is an appropriate edible portion, is generally cut and shipped together with the skin. It is. That is, the “surface” here includes not only the skin (including the epidermis) that becomes the non-appropriate edible portion but also the fruit that originally becomes the edible portion. Also, for this reason, the operation of peeling the whole of the object A to be processed with a peeling machine is also referred to as “peeling”.

Hereinafter, the rotating drum 2 and the posture changing body 3 which are the main constituent members of the rotating drum peeler 1 of the present invention will be described in more detail.
First, the rotating drum 2 will be described. As shown in FIGS. 1 and 3 as an example, the rotary drum 2 includes a drum main body 21 having a cylindrical body portion 210 having both ends opened, and a cutting blade 22 attached to the drum main body 21.
As an example, the drum body 21 is rotatably attached to the frame 10 so that the center of rotation is substantially horizontal. Note that the drum body 21 is rotatably supported from the outer peripheral portion, and there is no substantial member as the center of rotation, but in the present specification, this is referred to as a rotating shaft 211 for convenience.

In addition, the drum main body 21 is configured to input the workpiece A from one end 212 and to discharge the workpiece A after the completion of peeling from the other end 212. Are respectively referred to as an input end 212a and a discharge end 212b.
The charging end portion 212a is provided with a charging chute 11 for guiding the workpiece A before cutting into the drum body 21. Further, the workpiece A is peeled off before the charging chute 11 ( An input conveyor C for supplying the input chute 11) is appropriately provided.
On the other hand, the discharge end portion 212b is provided with a bucket B for storing the workpiece A that has been peeled off. This can also be received by a conveyor or the like as appropriate.
In addition, as described above, the cutting blade 22 is attached to the drum portion 210 of the rotary drum 2 so as to protrude inside the drum main body 21, so that an attachment hole 213 for this purpose is formed along the longitudinal direction of the drum portion 210. (See FIG. 2). In addition, how to attach the cutting blade 22 including the attachment hole 213 will be described later.

Further, in this specification, the term “drum” is used alone or in combination with other terms other than the terms “rotating drum” and “drum body” (for example, “drum inner circumferential surface”, “in drum”). , “Drum bottom” etc.). However, this is not because there is a separate “drum” as a special member for “rotating drum” or “drum body”, but as a general term for “rotating drum” or “drum body” (shape It is used generically as a term that is frequently used for
Furthermore, in this specification, in order to cut the surface of the workpiece A inside the drum main body 21 (on the inner peripheral surface), a space that greatly contributes to cutting in the drum main body 21 is particularly referred to as a “processing space R”. It is called.

Next, the cutting blade 22 provided on the peripheral surface of the body part 210 will be described. The cutting blade 22 is used to cut the surface of the workpiece A thinly, and is provided in the shape of a scissors blade over substantially the entire length in the longitudinal direction of the drum body 21 as shown in FIG. 3 as an example. In the present embodiment, the rotary drum 2 is viewed from the side (viewed from the end direction), and the cutting blades 22 are provided in four equal positions with respect to the drum main body 21. The size can be appropriately changed depending on the size of the processed material A (see FIG. 2).
Moreover, as shown in the enlarged view of FIG. 2 as an example, the cutting blade 22 is attached to the rotary drum 2 by a bracket 220 at an appropriate angle, and the cutting allowance (the allowance of the blade from the inner peripheral surface of the body portion) is set. It is considered so that it can be adjusted appropriately. Specifically, an adjustment portion 221 having a long hole shape or a groove shape is formed in the cutting blade 22, while a fixing screw 222 having a female screw shape is formed in the bracket 220 and is passed through the adjustment portion 221. 223 is fixed to the fixing hole 222 of the bracket 220 by screwing.

In this embodiment, the adjusting portion 221 is formed in a groove shape with one end of an ellipse cut out so that the cutting allowance can be adjusted steplessly. However, the adjusting portion 221 has a circular hole through which the fixing bolt 223 is passed. It is also possible to form several and use this as the adjusting portion 221 to adjust the cutting allowance step by step. Further, the specific cutting allowance dimension is appropriately determined according to various conditions such as properties (size, degree of surface irregularities, hardness, slime, etc.) of the workpiece A and processing conditions.
Further, when the cutting blade 22 is attached to the drum body 21, the blade-shaped gap formed in the attachment hole 213 becomes a discharge hole 214 on the cut surface (this is referred to as “skin a”). Along with this, the rotary drum 2 is provided with a removable cover 12 that mainly covers the upper side of the drum body 21 to prevent the cut skin a from scattering outside (see FIG. 1). .

Next, the posture change body 3 will be described. The posture changing body 3 changes various postures of the workpiece A to be cut, and is provided so as to penetrate the inside of the drum body 21 in the longitudinal direction (axial direction). In this embodiment, as an example, As shown in FIGS. 2 and 5, a screw 30 formed by forming a blade 32 in a spiral shape (reverse screw shape here) on the shaft portion 31 is applied.
The screw 30 is rotated in the same direction as the drum main body 21 as viewed from the end 212, that is, in a direction that makes a pair with the drum and raises the workpiece A along the inner peripheral surface of the drum. The workpiece A is changed to various postures such as a standing posture, a standing posture, and an inclined posture. Note that the screw 30 is rotated in the same direction as the drum because, when the screw 30 is rotated in the opposite direction to the drum, the workpiece A is caught between the drum body 21 and the screw 30 and only on one side. This is because it is scraped off.

By such rotation of the drum body 21 and the screw 30, the workpiece A positioned on the inner peripheral surface of the bottom of the rotary drum 2 is rolled up, for example along the inner peripheral surface of the drum, and then dropped. Repeat the movement. This is a rolling operation as if the workpiece A is stirred or swung in the vertical direction. At this time, since the screw 30 is horizontally installed inside the drum, the workpiece A subjected to such an operation is subjected to the rolling operation. However, for example, as shown in the enlarged view of FIG. 2 and FIGS. 5 and 6, the screw 30 is instantaneously fitted into the groove of the screw 30 (between the blade 32 and the blade 32) or is momentarily leaned against the screw 30. It takes a standing posture or an inclined posture. Further, at this time, the portion (end t or intermediate portion m) that is in contact with the inner peripheral surface of the drum is thinly scraped off by the cutting blade 22. Of course, it is considered that the body portion d is often cut when the workpiece A takes a permanent posture at the bottom of the drum.
As described above, in this embodiment, mainly by the action of the screw 30, the workpiece A in the rotary drum 2 is reversed in various directions so as to be intentionally exposed, thereby causing the workpiece A to have various postures. The axis j is changed in various directions.

It should be noted that the workpiece A takes various postures such as a standing posture and an inclined posture as well as a permanent posture, because the workpieces A lean on each other or ride on each other. However, the main factors of the posture change are considered to be the lift effect (lifting effect) of the workpiece A by the rotation of the drum body 21 and the screw 30 and the support effect of the workpiece A by the screw 30. . Actually, the workpiece A can be rolled in the drum only with the rotating drum 2 without using the posture changing body 3 (screw 30). In this case, as shown in FIG. Although the object A slightly swings the axis j on the horizontal plane, the object A is rolled while maintaining a substantially stationary posture. In this posture, only the body portion d serving as the ground contact portion is mainly cut, and the object to be processed It is impossible to cut the surface of A thinly and uniformly. Therefore, the posture changing body 3 that dispels the workpiece A inside the rotating drum 2 is extremely important, and is an essential component in the present invention.
And while the to-be-processed object A is transferred to the discharge end part 212b from the injection | throwing-in end part 212a, since such an attitude | position change is repeated continuously, the surface is cut almost uniformly and uniformly.

  Further, as an example, the screw 30 as the posture change body 3 is provided in an inscribed state with some clearance with respect to the inner peripheral surface of the body portion 210 of the rotary drum 2 as shown in FIGS. However, in this embodiment, the axial center position is provided at a position slightly shifted from directly below the rotation shaft 211 to the front side (front side) in the rotation direction. As a result, the inner lower side of the rotary drum 2 can be effectively used as a processing space R, that is, a space for cutting the surface by removing the object A to be processed. In other words, when the screw 30 is provided at the rotation center (rotary shaft 211) of the rotating drum 2 or a position directly below the rotating shaft 211, the processing space R becomes narrower, for example, about the radius of the rotating drum 2. The object A to be processed cannot be accommodated (cut). The outer diameter of the screw 30 is about 1/3 of the inner diameter of the drum body 21 as an example.

  Further, as shown in FIGS. 2 and 4, the frame 10 is provided with a scraping body 23 that acts on the inner peripheral surface (upward) of the rotating drum 2. This scraping body 23 is for piercing the cutting blade 22 and for removing the workpiece A that rotates as it is with the drum body 21 (in FIG. 4, the workpiece A that has been shredded during cutting is shown). Here, since the bottom of the inner peripheral surface of the drum main body 21 mainly serves as the processing space R (surface cutting space), the scraping body 23 is provided on the upper side in the rotary drum 2.

  Further, as shown in FIG. 7 as an example, a lift bar 24 can be provided on the inner peripheral surface of the rotary drum 2 along the longitudinal direction of the body portion 210. The lift bar 24 lifts the workpiece A positioned at the bottom of the inner peripheral surface of the drum more effectively and causes the posture change to be reliably performed. The lift bar 24 is not an essential component in the present invention. For example, the property or size of the workpiece A changes, and the posture change of the workpiece A can be changed only by the lift effect of the screw 30 or the drum body 21. It is only necessary to provide a case where the above cannot be performed sufficiently. In other words, when the size, properties, etc. of the workpiece A change, even if the stripping operation of the workpiece A does not work as it is, by attaching the lift bar 24, a single rotary drum type peeling machine 1 is attached. Can respond. For this reason, the versatility as a peeling machine can be improved and a user's cost burden can also be reduced.

Further, as shown in FIG. 7 as well, the lift bar 24 is preferably provided at a substantially intermediate position between the cutting blades 22 in consideration of not inhibiting the cutting operation. Further, when the lift bar 24 is provided, it is also considered that the lift bar 24 is not in contact with the scraping body 23 described above.
Further, although the illustrated lift bar 24 is provided substantially straight along the rotation axis 211 of the rotary drum 2, the lift bar 24 is provided obliquely with respect to the rotation axis 211, for example, in order to promote the posture change of the workpiece A. (So-called “twisted position”), the amount of protrusion of the lift bar 24 toward the inside of the body portion can be changed as the discharge end portion 212b is approached. Moreover, although the illustrated lift bar 24 has a rectangular cross section, it can be appropriately changed.

Next, members for rotating the drum body 21 and the screw 30 will be described. As described above, the drum main body 21 is rotatably supported from the outer peripheral side, and in this embodiment, the roller-shaped support body 13 fixed to the frame 10 performs the above-described operation. As shown in FIG. 2 as an example, the support 13 is provided in three equal positions when viewed from the side, and supports a flange portion 25 formed at the end of the rotary drum 2. Incidentally, the flange portion 25 is a portion used as a connection portion for connecting relatively short drums when it is desired to secure a long transfer length of the workpiece A, that is, a distance for performing the cutting operation.
On the other hand, the screw 30 as the posture change body 3 has a shaft portion 31 rotatably held by a bearing 33 fixed to the frame 10 (see FIGS. 2 and 6).

And when rotating the said drum main body 21, it drives by the motor M1 installed in the lower space of this thing. That is, the belt 28 is wound around the pulley 27 provided on the output shaft of the motor M1 and the outer peripheral portion of the drum body 21, and the rotation of the motor M1 is transmitted to the drum body 21 via the pulley 27 and the belt 28. In addition, a speed reduction mechanism is appropriately incorporated in the motor M1.
On the other hand, the screw 30 is connected to a motor M2 having a shaft portion 31 provided with a speed reduction mechanism at the charging end portion 212a of the rotary drum 2, from which the drive is transmitted.

In addition, the rotation speed (rotation speed) of the drum main body 21 is about 400 rpm as an example, and on the other hand, the rotation speed of the screw 30 is controlled to a low speed or a very low speed. Of course, such setting of the rotational speed, in particular, the rotational speed of the screw 30 can be appropriately changed according to the properties of the workpiece A and the like, but in the present invention, the screw 30 relative to the rotational speed of the drum body 21. It has been confirmed by the present applicant that the workpiece A can be peeled thinly and evenly when the rotational speed of is slow.
In other words, when the screw 30 is rotated relatively fast, the workpiece A is not cut, but the screw 30 moves the workpiece A from the input end 212a to the discharge end 212b. The function of stopping the transfer of the object to be processed A is rather not large, and it is considered that the effect of causing the object to be processed A to stay in the processing space R while being retained is large.
In other words, the fact that the screw 30 is formed in a left-handed shape in this embodiment and that the screw 30 is slowly rotated in the same direction as the drum main body 21 rather than transferring the workpiece A. Rather, it is considered that the surface of the workpiece A having an irregular shape can be cut evenly because it greatly contributes to exposing the workpiece A within the drum body 21.

  Further, during the peeling operation, scraps are generated, and the component (for example, starch, etc.) of the object to be processed A adheres to the cutting blade 22. It is preferable to wash away. For this reason, in this embodiment, a water pipe is provided above the screw 30 (not shown), and the skinning operation is performed while water is sprayed from here into the drum (object A). Of course, such sprinkling also has an action of cleaning the discharge hole 214 and an action of removing (washing away) the waste when the workpiece A is taro, for example.

The rotating drum type peeling machine 1 of the present invention has the basic structure as described above. Hereinafter, an aspect in which the surface of the workpiece A is cut evenly by the apparatus will be described.
(1) Pre-cleaning This step is a step of roughly washing off mud and the like adhering to the workpiece A, and by doing this, the durability of the cutting blade 22 can be improved. Conversely, if the workpiece A is cut with mud attached, the cutting blade 22 may be chipped by the mud or the life of the cutting blade 22 may be shortened. Work. Of course, the pre-cleaning is a process that is adopted when the root vegetables, which are considered to be naturally attached with mud, are used as the object to be processed A. It is also possible to substitute a fruit soaked in water for a certain period of time.

(2) Stripping of the outermost shell This is a work for peeling the hard skin, which is the outermost shell of the workpiece A, and is an operation performed mainly when the taro is the workpiece A. Further, by peeling off the outermost shell, it is possible to surely remove mud or the like that could not be washed away by the pre-cleaning, and to further improve the durability of the cutting blade 22.
Incidentally, the above steps (1) and (2) are not necessarily essential, and it is possible to separately apply the workpiece A to which these steps have already been performed in another factory or the like. Further, depending on the type and properties of the workpiece A, it is possible to omit all the steps (1) and (2).

(3) Loading into the rotating drum When the above preparatory work is completed, the rotating drum 2 and the screw 30 are driven, and water is sprinkled in the drum main body 21 while the workpiece A is appropriately fed from the loading conveyor C. It is supplied (introduced) into the rotary drum 2 through the input chute 11. Of course, when the workpiece A is put into the rotary drum 2, it can be performed manually by the operator.

(4) Cutting in the drum (substantial cutting work)
The workpiece A supplied into the rotary drum 2 is rotated in the same direction by the drum main body 21 and the screw 30 and is therefore lifted upward from the bottom along the inner peripheral surface of the drum while rolling. . Since the workpiece A that has been lifted by lifting is naturally returned (moved) so as to drop near the bottom of the drum, the workpiece A is supported by the screw 30 as shown in FIGS. Various postures are changed. Therefore, normally, the workpiece A that rolls in a permanent posture takes a standing posture or an inclined posture, and at that time, the end t and the middle portion m that are in contact with the drum are thinned by the cutting blade 22 (skin). a) is peeled off.
In this way, the operation of cutting the surface of the workpiece A while randomly changing the posture of the workpiece A is repeatedly performed until the workpiece A reaches the discharge end portion 212b. While maintaining the shape substantially, the entire surface is cut evenly.
Of course, the cut leather a is discharged to the outside of the drum through the discharge hole 214 of the drum main body 21, but the cover 12 prevents the scattering to the outside of the apparatus.

(5) Action of scraping body In the peeling operation, for example, when the workpiece A sticks into the cutting blade 22 and sticks to the inside of the rotary drum 2 For example, as shown in FIG. 4, the scraper 23 can quickly wipe off. Therefore, the workpiece A that has pierced the cutting blade 22 does not hinder the continuation of the cutting operation, and the skinning operation can proceed efficiently.

(6) Extraction As described above, the workpiece A having the entire surface cut substantially uniformly is subsequently extracted from the discharge end 212b. In the present embodiment, it is shown that the workpiece A after stripping is completed is put into the bucket B, but it can also be taken out by a conveyor or the like. Moreover, the taken-out to-be-processed object A is used for the inspection of a peeling condition etc. suitably after that.

  As described above, in the present invention, the workpiece A is intentionally exposed in the rotary drum 2 or moved so that the workpiece A is agitated randomly. In addition to the standing posture, various postures such as a standing posture and an inclined posture are taken. Then, by actively performing such a posture change, the end t and the intermediate portion m, which are non-grounding portions in the permanent posture, are uniformly brought into contact with the drum inner peripheral surface, and the workpiece A having an indefinite shape is formed. The surface is cut reliably and with a high yield. Of course, the skinning operation can be performed with the original shape (undefined shape) of the workpiece A substantially maintained.

[Other Examples]
The present invention has the above-described embodiment as one basic technical idea, but the following modifications can be considered. That is, the drum body 21 in which the input end portion 212a and the discharge end portion 212b have substantially the same diameter is applied to the embodiments shown in FIGS. However, the drum body 21 does not necessarily have the same diameter at both ends. For example, as shown in FIG. 8, it is possible to apply a tapered drum 21A having a discharge end 212b larger in diameter than the input end 212a. It is.

In this case, since the bottom of the drum inner peripheral surface is formed to have a downward slope toward the discharge end portion 212b, a transfer action (feed action) by the taper drum 21A can be expected. Further, as shown in FIG. 8B, for the workpiece A located at the bottom of the drum inner peripheral surface, a difference in peripheral speed occurs between the input end portion 212a side and the discharge end portion 212b side. It can be expected that the discharge end side of the object to be processed A is greatly shaken, and this works to change the posture of the object to be processed A.
Also, in this case, in order to efficiently change the posture of the workpiece A, the screw 30 (posture changing body 3) penetrating the inside of the drum in the longitudinal direction is also shown, but as described above, Since the transfer of the workpiece A can be performed by the inclination of the taper drum 21A, it is considered that the screw 30 is not necessarily rotated.

Further, in the case of the taper drum 21A, although depending on the size and properties of the workpiece W, the blade 32 is not formed, for example, the posture changing body 3 with only the shaft portion 31 or the posture changing body 3 with knurling formed on the shaft portion 31. However, it is conceivable that the posture of the workpiece A can be changed sufficiently. In this case, the posture changing body 3 that does not require the blades 32 may be used. The posture change body 3 in this case no longer deviates from the concept of the normal screw 30 and can be said to be a simple hook-like member. Therefore, in this specification, the screw 30 and the hook-like member having only the shaft portion 31 or the knurling are formed. The term “posture change body 3” is used including the hook-shaped member.
In FIG. 8 as well, the rotating shaft 211 of the taper drum 21A is set to be almost horizontal, but can be provided obliquely so as to descend to the discharge end 212b side as appropriate.

It is a perspective view which shows the rotating drum type peeling machine of this invention, and a side surface sectional view which shows the mode of the to-be-processed object from which the attitude | position was changed from the permanent attitude | position by the attitude | position change body. It is the side view which looked at the rotating drum from the side surface same as the above, and the enlarged view which shows a mode that the edge part vicinity of a to-be-processed part is scraped off. It is a perspective view which shows the condition of the cutting blade attached to a rotating drum. It is side surface sectional drawing which shows the effect | action of a scraping body. It is explanatory drawing which shows a mode that a to-be-processed object is sent to the discharge end part side, changing a attitude | position variously with a screw from the V direction of FIG. It is the perspective view which looked at a to-be-processed object being cut from the discharge end part side of a rotating drum. It is side surface sectional drawing which shows the state which provided the lift bar inside the trunk | drum part of a rotating drum. It is side surface sectional drawing (a) which shows the outline of a rotating drum type peeling machine at the time of applying a taper drum, and plane sectional drawing (b). It is explanatory drawing which shows the various attitude | positions of a to-be-processed object. It is a perspective view which shows roughly the state which rolls a to-be-processed object on the internal peripheral surface of the rotating drum comprised only with the drum main body without using a posture change body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotating drum type peeling machine 2 Rotating drum 3 Posture change body 10 Frame 11 Input chute 12 Cover 13 Support body 21 Drum main body 21A Taper drum 22 Cutting blade 23 Scraping body 24 Lift bar 25 Flange part 27 Pulley 28 Belt 30 Screw 31 Shaft part 32 Blade 33 Bearing 210 Body 211 Rotating shaft (Rotation center)
212 end portion 212a input end portion 212b discharge end portion 213 mounting hole 214 discharge hole 220 bracket 221 adjusting portion 222 fixing hole 223 fixing bolt M1 motor (for drum driving)
M2 motor (for screw drive)
A Object to be treated a Skin (surface)
B bucket C loading conveyor d trunk j axis m middle part R processing space t end

Claims (7)

A state in which a rotating drum comprising a drum body that is rotatably supported and a cutting blade attached to a side body portion of the drum body is a main component, and an object to be processed is put into a processing space in the drum body. Then, in the peeling apparatus that is configured to cut the surface of the object to be processed by the cutting blade by rotating the rotating drum,
In this apparatus, in the processing space, a posture changing body substantially along the rotation center of the drum body is provided over almost the entire length of the drum body.
When cutting the workpiece, the posture of the workpiece is changed variously by the drum body and the posture changing body during the transfer in the processing space, so that the surface of the workpiece can be scraped almost uniformly. Rotating drum type peeling machine characterized by   The posture changing body is a screw having blades spirally formed with respect to the shaft portion, and during the peeling operation, this screw is paired with the drum body so that the object to be processed is placed on the inner peripheral surface of the drum. 2. The rotary drum type peeling machine according to claim 1, wherein the rotary drum type peeler is rotated in a direction to be raised along.   The rotary drum type peeling machine according to claim 1 or 2, wherein the posture changing body is provided at a position shifted from a position just below a rotation center of the rotary drum to a front side in the rotation direction.   The rotary drum is provided with a lift bar on the inner peripheral surface of the drum main body, and the workpiece located near the bottom is lifted by the rotation of the drum main body. Rotating drum type peeling machine as described.   The rotary drum-type skinning machine according to claim 1, wherein the rotary drum is provided with a scraping member for scraping off an object pierced by a cutting blade in a fixed state.   The cutting blade is a blade-shaped one provided along the longitudinal direction of the rotary drum, and the cutting blade is attached with an adjustable cutting margin. The rotary drum type peeling machine according to 3, 4, or 5.   The object to be processed that is put into the processing space of the rotating drum has an indefinite shape, and the surface of the object to be processed is almost uniformly cut during the peeling operation, and the indefinite shape of the object to be processed is substantially maintained. The rotary drum type peeling machine according to claim 1, 2, 3, 4, 5 or 6.

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