Peeler blade disc

Abstract

To provide a cutter disk capable of reducing damages and discoloration on the surface of a fruit of a peeling subject, obtaining a cleanly cut fruit with a high commercial value, and enhancing the efficiency of peeling work.SOLUTION: A coat-peeling machine comprises a cutter disk 2 supported to be rotatable in a horizontal plane and a trunk 6 that opens toward the cutter disk so as to surround the upper direction of the cutter disk 2 and has an input port 7a for putting the peeling subjects such as chestnuts and potatoes in its inside, with a plurality of blade bodies 3 that have a tip 3a for peeling the coat of a peeling subject disposed on a periphery of the upper face of the cutter disk 2. In the coat-peeling machine, the cutter disk 2 is configured in the manner where the tip 3a formed in the shape of a circular arc of the blade body 3 is arranged and fixed to face the rotational direction of the cutter disk 2, and a coat and waste drainage groove 2b that vertically penetrates the cutter disk 2 is provided below the tip 3a of the blade body 3.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a blade disc for a peeler that peels the skin of objects such as chestnuts and potatoes. [Background technology]

[0002] A conventional peeler for peeling chestnuts, potatoes, and other peeled objects is disclosed in Patent No. 5329455 (see Patent Document 1). The blade disc 61 used in this peeler is shown in Figures 9 and 10, and has a plurality of blades 62 attached radially toward the axis on the outer periphery of the upper surface of the blade disc 61, which rotates continuously in the X direction in a horizontal plane, and the blades 62 are arranged so that their cutting edges 62a are parallel to an imaginary center line P that runs along the radial direction from the rotation axis. Figures 9 and 10 are plan views of the blade disc 61, with 61a representing a blade mounting seat and 61b representing a linear peel residue discharge groove. Another patent is Japanese Patent No. 6575760 (see Patent Document 2). The blade disc 71 used in this peeler is shown in Figures 11 and 12. The blade disc 71 rotates continuously in the X direction in a horizontal plane. A plurality of blades 72 are attached to the outer periphery of the upper surface of the blade disc 71, tilted relative to the rotational direction of the blade disc 71. The blade disc 71 is arranged so that the cutting edges 72a of the blades 72 face the direction of rotation of the blade disc 71, and the blades 72 are fixed at an angle so that the inner end of the blade disc 71 is positioned further in the direction of rotation of the blade disc 71 than the outer end. Figure 12 is a plan view of the blade disc 71 with the blades 72 removed. 71a denotes a blade mounting seat, and 71b denotes a linear peel waste discharge groove. P denotes an imaginary center line. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5329455 [Patent Document 2] Patent No. 6575760 Summary of the Invention [Problem to be solved by the invention]

[0004] In the peeler of Japanese Patent No. 5329455 (Patent Document 1), as shown in FIG. 9, the linear cutting edges 62a of the multiple blades 62 arranged on the upper surface of the blade disk 61 are arranged parallel to an imaginary center line P that extends radially from the rotation axis. As a result, as the blade disk 61 rotates in the direction of arrow X, the peeled object W, such as chestnuts or potatoes, is forced to float by the rotation of the blade disk 61 and rotates in the same direction as the blade disk 61 at a slightly delayed speed. At this time, the rotational speed of the blades 62 is the same as that of the blade disk 61, and the peeled object W in front of the cutting edges 62a strongly collides with the cutting edges 62a at approximately right angles, resulting in peeling. This causes significant damage to the peeled object W, resulting in scratches (bruises) on the surface of the peeled fruit and discoloration of the scratched areas, which deteriorates the appearance and reduces the commercial value of the peeled fruit. Furthermore, because the object W to be dehulled collides with the cutting edge 62a of the blade body 62 at a nearly right angle, the hard skin of the object W to be dehulled is cut through (meaning that the blade is pressed against the object to be dehulled and cut with strong force without moving the blade back and forth). Unless the cutting edge 62a is kept sharp, the cutting edge 62a has difficulty cutting into the skin, resulting in a clean cut. To maintain the sharpness of the cutting edge 62a, frequent sharpening is required. Furthermore, because the skin is only cut through for a short time when the object W to be dehulled collides with the cutting edge 62a, it takes time to evenly peel the entire object. Even when the object W to be dehulled collides with the cutting edge 62a, not all of the object W to be dehulled is necessarily cut through by the cutting edge 62a. Some of the object W is repelled by the strong collision, resulting in no skin being peeled. This can potentially increase the overall dehulling time.

[0005] To solve the above problem, Japanese Patent No. 6575760 proposed a blade disc for a peeler. In this blade disc 71 shown in Figure 11, the linear cutting edges 72a of the multiple blades 72 arranged on the upper surface of the blade disc 71 are fixed at an angle so that the inner periphery of the blade disc 71 is positioned further in the direction of rotation than the outer periphery. When the peeled object W strikes the cutting edges 72a of the blades 72 with force and is peeled, the peeled object W moves slightly laterally (toward the periphery) relative to the cutting edges 72a, creating a "pull-cut" effect. This makes it easy to cut even the tough outer skin of chestnuts. However, because the blades 72 rotate with the blade disc 71 and the cutting edges are linear, the contact time between the peeled object W and the cutting edges 72a is extremely short, resulting in the object being quickly thrown off. Therefore, the contact time between the numerous objects W to be peeled and the cutting edge 72a is short, and it takes time to complete peeling of all the objects W to be peeled. Even with the above-mentioned configuration, when the skin of the peeled object is particularly hard, for example, chestnuts, many chestnuts bounce back without being cut into when they collide with the straight cutting edge 72a. Chestnuts that bounce back many times are more likely to suffer bruises, and a detailed inspection of the peeled chestnuts reveals that some are of poor quality with many scratches and discolorations. This invention was made to solve the above-mentioned drawbacks of the conventional method, and its purpose is to obtain a product with high commercial value, with less scratches and discoloration on the surface of the peeled fruit and a clean cut. Furthermore, the cutting length into the surface of the peeled fruit W is increased by sliding the cutting edge sideways while making contact with the arc-shaped cutting edge for a longer period of time, thereby shortening the peeling time. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the blade disc of the peeler according to the present invention has the following configuration. The cutting edges of the blades placed on the upper surface of the blade disc are not formed in a straight line, but are formed in an arc in the longitudinal direction of the blade. With blades of this shape, the object to be dehulled (W) slides sideways along the arc-shaped cutting edge, an effect that cannot be achieved with straight cutting edges, even when the blades are arranged diagonally or radially. This lengthens the time required to cut into the object to be dehulled (W), shortening the overall processing time and improving processing efficiency. The invention described in claim 1 is A peeling machine comprising a blade disc supported rotatably in a horizontal plane, a body surrounding the upper part of the blade disc and opening toward the blade disc, and having an upper opening through which objects to be peeled, such as chestnuts and potatoes, are fed, and a plurality of blades having cutting edges for peeling the objects to be peeled are provided on the outer periphery of the upper surface of the blade disc, The blades on the blade disc have cutting edges formed in an arc shape in the longitudinal direction, the arc-shaped cutting edges are arranged facing the direction of rotation of the blade disc, and a peel waste discharge groove is provided below the cutting edges in an arc shape that passes through the blade disc from top to bottom to follow the arc-shaped cutting edges.This is a blade disc for a peeling machine.

[0007] In the above invention, when the arcuate cutting edge of the blade collides with the object to be de-skinned while the blade disc is rotating, the blade, which is arranged on the upper surface of the blade disc, moves in the direction of rotation, causing the hard skin on the surface of the object to be de-skinned to be "pull-cut" (meaning that the blade is placed against the object to be de-skinned and moved back and forth to cut). Therefore, the sharpness is improved compared to the previous method, where the object to be de-skinned is "pushed-cut" (meaning that the blade is pressed against the object to be de-skinned and cuts with a strong downward force without moving the blade back and forth). This is not a "pushed-cut" or a "pull-cut" for a short period of time. Instead, the peeled object slides sideways along the arc-shaped cutting edge, resulting in a "pull-cut" with a long contact, which increases the cutting length and eliminates the need to apply strong force to the peeled object, reducing bruising and discoloration on the "peeled fruit" and improving its appearance. The peeled fruit is also less likely to bounce back from impact with the cutting edge, as is the case with a straight cutting edge, and the longer "pull-cut" with the arc-shaped cutting edge reduces the peeling time for each peeled object W, resulting in improved overall processing efficiency. [Effects of the Invention]

[0008] According to this invention, the object to be peeled slides sideways along the arc-shaped cutting edge of the blade body, moving in an arc toward the outer periphery of the blade disc, which increases the contact time with the cutting edge and makes it easier for the cutting edge to dig deeper into the skin, thereby shortening the peeling time. Therefore, compared to the conventional method in which the peeling process was difficult due to the repeated collision with the cutting edge and the peel being bounced back, the processing time is shortened and the occurrence of scratches and discoloration is reduced. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is an exploded perspective view of an embodiment of the present invention; [Figure 2] 1 is a plan view of an embodiment of the present invention; [Figure 3] FIG. 2 is a plan view of the cutter disk according to the embodiment of the present invention, with the blade body removed. [Figure 4] FIG. 2 is an enlarged cross-sectional view of a blade body mounting portion according to an embodiment of the present invention. [Figure 5] FIG. 10 is a perspective view of a skin scraping blade attached to the underside of the blade disc. [Figure 6] FIG. 2 is a front view of the blade body of the present invention. [Figure 7] FIG. 10 is a plan view of a second embodiment of the present invention. [Figure 8] FIG. 10 is a plan view of a cutter disc according to a second embodiment of the present invention, with the blades removed. [Figure 9] FIG. 1 is a plan view of a conventional cutter disk. [Figure 10] FIG. 1 is a plan view of a conventional cutter disc with the blade body removed. [Figure 11] FIG. 10 is a plan view of another conventional cutter disk. [Figure 12] FIG. 10 is a plan view of another conventional cutter disk with the blade body removed. DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a peeler according to the present invention will be described with reference to the drawings.

[0011] Figures 1 to 6 show a first embodiment of the present invention, Figures 7 and 8 show a second embodiment, and Figures 9 to 12 show a conventional embodiment. In the figures, reference numeral 1 denotes a peeler for peeling the skin of objects to be peeled, such as chestnuts and potatoes (for example, the outer skin and inner skin of chestnuts).

[0012] The peeling machine 1 has a rectangular parallelepiped support base 5, which houses a drive means (not shown), such as a motor, for rotating the blade disc 2. A short cylindrical tube 4 is formed on the upper surface of the support base 5. A polygonal body 6 is connected to the upper side of the tube 4. The body 6 opens toward the blade disc 2 and surrounds the upper side of the blade disc 2, and the material W to be peeled is fed into the body 4. The inner periphery of the body 6 is hexagonal, surrounding the rotation axis 2d of the blade disc 2. The upper side of the body 6 is closed by a top lid 7. A hopper 7b with an inlet 7a is provided on the top side of the top lid 7, and the inlet 7a can be opened and closed by a shutter 7c. The shutter 7c is opened and closed by an actuator (not shown), such as an air cylinder. The shutter 7c is normally closed, opens after the material W to be peeled is fed, and closes again when feeding is complete. A bearing 8 is provided in the center of the upper surface 5a of the support base 5, and a rotary shaft 9 rotated by the drive means is supported on the bearing 8 so as to protrude upward. A circular flange 10 is detachably attached to the upper end of the rotary shaft 9. A protrusion 10a is formed on the upper surface of the flange 10, and is screwed to the underside of the blade disc 2. An engagement groove 10b formed on the lower end of the flange 10 engages with an engagement pin 9a protruding in a direction perpendicular to the upper end of the rotary shaft 9, allowing the blade disc 2 and the rotary shaft 9 to rotate together.

[0013] The blade disc 2 is formed in a circular shape centered on its rotation axis, and blade mounting seats 2a for attaching blades 3 are provided at multiple locations on its outer periphery. The blade disc 2 is made of a lightweight metal such as aluminum, or synthetic resin, and is formed in a circular shape that is slightly smaller in diameter than the inner periphery of the body 6. A flange 10 attached to the upper end of a rotating shaft 9 is connected to the center of the underside of the blade disc 2 with a screw, so that the blade disc 2 and the rotating shaft 10 rotate together.

[0014] The blade body mounting seats 2a are portions on the upper surface of the cutter disc 2 to which blade bodies 3 having sharp cutting edges are screwed. The blade body mounting seats 2a are slightly recessed to match the shape of the blade bodies 3 and are radially arranged on the upper surface of the cutter disc 2. In this embodiment, six blade body mounting seats 2a are provided at 60-degree intervals in the circumferential direction (see Figures 2 and 3). Below the arc-shaped cutting edges 3a of the blade bodies 3 attached to the blade body mounting seats 2a, skin scrap discharge grooves 2b are formed, penetrating the cutter disc 2 from top to bottom. In this embodiment, the skin scrap discharge grooves 2b are formed to match the cutting edges 3a of the blade bodies 3 and extend to the outer periphery of the cutter disc 2. It is sufficient that the front side of the skin scrap discharge grooves 2b in the rotational direction of the cutter disc 2 matches the shape of the arc-shaped cutting edges 3a. Each blade body mounting seat 2a has at least two screw holes 2c, into which the blade bodies 3 are screwed.

[0015] The cutting edge 3a of the blade body 3 is formed in an arc shape, and the underside is cut off at an angle to form a sharp point (see Figure 4). The arc part of the cutting edge 3a is located above the skin scraps discharge groove 2b, and is attached in front of the cutting edge 3a so that there is a small gap C (see Figure 4) that allows the skin scraps to pass through. The cutting edge 3a of the blade body 3 is formed in an arc shape in the longitudinal direction, and the center part is slightly bulged and wider than both ends in the longitudinal direction. The opposite side (back side) of the cutting edge 3a is formed in a straight line, but this is not limited to this.

[0016] The rear upper surface of the blade body 3 is formed with an inclined raised portion 3b for lifting up the object W to be dehulled as it passes over the blade body 3 (see Figure 4). The upper surface of the blade body 3 is horizontal from the cutting edge 3a to the center, and from the center to the rear edge opposite the cutting edge 3a, an inclined raised portion 3b is formed so that it is slightly higher than the cutting edge 3a. The cutting edge 3a, which is formed horizontally on the upper surface of the blade body 3, protrudes approximately 0.2 to 0.8 mm from the upper surface of the blade disc 2 and is screwed to the blade body mounting seat 2a of the blade disc 2. The protrusion value of the cutting edge 3a is not limited to the above range. Approximately 0.5 mm is preferred for rough peeling, and approximately 0.2 to 0.3 mm is preferred for finish peeling, but it is determined depending on various conditions such as the type and hardness of the object to be dehulled.

[0017] The cylindrical portion 4 containing the blade disc 2 is provided with a flat skin scraps receiving portion 4a that receives the skin scraps peeled by the blade body 3, and the skin scraps receiving portion 4a has a skin scraps discharge port 4b that opens for discharging the peeled skin scraps to the outside. In addition, multiple scraping blades 11 (see Figure 5) are screwed to the underside of the blade disc 2 to rotate together with the blade disc 2 and scrape the skin scraps to the skin scraps discharge port 4b. These scraping blades 11 have inclined blade portions 11a that scoop up the skin scraps and move them to the skin scraps discharge port 4b. The scraping blades 11 are made of metal or synthetic resin.

[0018] The peel residue discharge port 4b is connected to a discharge chute 5b that leads the peel residue to the outside of the peeler 1, and the peel residue is discharged to the outside through this discharge chute 5b.

[0019] An open discharge port 6a is provided on one side of the hexagonal body 6, and a shutter 6b that opens and closes the discharge port 6a can be opened and closed in the vertical direction by an actuator (not shown) such as an air cylinder. A cushioning material layer 6c such as rubber sponge is attached to the inner wall of the body 6.

[0020] The top lid 7 is made of metal such as stainless steel, and is fitted onto the body 6. The body 6 and the top lid 7 are detachably fixed together by a fastener (not shown) such as a clamp.

[0021] The process of peeling the skin of a peeled object W (e.g., the outer skin of a chestnut) using the peeler 1 will be described. The following process is automatically operated by electrical signals. When the operation switch of the automatic operation control device (not shown) is pressed, the motor (not shown) in the support base 5 starts, and the blade disc 2 begins to rotate in a predetermined direction (X direction). Next, a fixed amount of peeled object W is loaded from the hopper 7b, and the peeled object W remains on the closed shutter 7c. After a preset time has elapsed, the shutter 7c moves horizontally to open the loading port 7a, and the peeled object W remaining on the shutter 7c falls into the body 6. Once the peeled object W falls, the shutter 7c closes. At this time, the discharge port 6a of the body 6 is blocked by the lowered shutter 6b, leaving the body 6 in a closed state with no opening. In this state, the blade 3 attached to the blade disc 2, which is rotating at high speed, collides with the peeled object W, and the peeling is performed by the cutting edge 3a. The peeled material W fed into the body 6 is urged by centrifugal force generated by the rotation of the blade disc 2, moving around within the body 6 and being deflected vertically by the buffer layer 6c on the inner wall of the body 6, where it is peeled by the blades 3 attached to the blade disc 2. After a predetermined time has passed since the peeling process, a shutter 6b closing the fruit discharge port 6a of the body 6 rises and opens, and the peeled fruit is sequentially discharged from the fruit discharge port 6a as the blade disc 2 rotates. The opening time of the fruit discharge port 6a is also set in the control device. After the predetermined opening time has passed and the fruit discharge is complete, the shutter 6b descends and closes the fruit discharge port 6a again, waiting for the peeled material W to be fed into the hopper 7b of the top cover 7. The peeled material W can be fed manually by an operator or intermittently using a conveyor or other device. This series of processes is repeated.

[0022] The effects of the peeler 1 configured as described above will now be described. In this peeler 1, the inner periphery of the body 6 is hexagonal. The inserted object W is urged by centrifugal force generated by the rotation of the turntable 2 and bounces off the buffer layer 6c on the inner wall, repeatedly changing position as it moves around. During this movement, the object comes into contact with the cutting edge 3a of the blade 3 and is peeled. The cutting edge of the blade 3 is arc-shaped, and the speed of the blade 3 in the rotational direction is faster than the movement of the object W. Therefore, the object W moves toward the outer periphery while in contact with the arc-shaped cutting edge 3a and is peeled. The object W moves laterally along the arc-shaped cutting edge 3a for a longer period of time, maintaining the "pull-cut" state for a longer period of time compared to a straight cutting edge. This allows even the tough outer skin of chestnuts to be cut quickly and easily.

[0023] The blade disc 21 of the second embodiment shown in Figure 7 has the blade bodies 3 arranged at an angle, allowing for more efficient peeling than the first embodiment. A blade body mounting seat 21a is provided on the upper surface of the blade disc 22, and unlike the first embodiment, this blade body mounting seat 21a is formed at an angle α with respect to the center line P on the plane of the blade disc 21. The blade body mounting seat 21a is provided with bolt holes 21c for mounting the above-mentioned blade bodies 3.

[0024] In this embodiment, the blade body 3 is arranged diagonally relative to the rotational direction of the blade disc 21, so that the object W to be skinned remains in contact for a long time on the blade disc 21 due to the movement toward the periphery caused by centrifugal force and the interaction with the arc-shaped cutting edge 3a, allowing a long cut to be made into the skin of the object W to be skinned. When the cutting edge is straight, the contact between the cutting edge and the object W to be peeled is limited to a very short time, and the object quickly moves away from the cutting edge, so the time for peeling the skin is short and it takes time to finish peeling the entire object W to be peeled.

[0025] [Explanation of symbols]

[0026] 1. Peeling machine 2. Cutting disk of the first embodiment 2a Blade mounting seat 2b... Skin dregs discharge groove 3...Blade body 3a Cutting edge 3b...ridge 4...Cylinder part 4b··Skin residue discharge groove 5...Support stand 5b Discharge chute 6. Torso 6a Actual discharge port 7...Top lid 7a...Inlet 21 ··Cutting disc of the second embodiment 21a Blade mounting seat 21b・Leather dregs discharge groove P...center line

Claims

[Claim 1] A blade disc supported so as to be freely rotatable in a horizontal plane in a rotational direction, used in a peeler comprising the blade disc and a body portion surrounding the blade disc from above, opening toward the blade disc, and having an inlet at the top for inserting objects such as chestnuts and potatoes into which peeling is to be carried out, A plurality of blades having cutting edges for peeling the skin of the object to be peeled are provided on the outer periphery of the upper surface, The blade body has a cutting edge formed in an arc shape in the longitudinal direction, and a central portion thereof is slightly bulged and wider than both ends in the longitudinal direction, and the arc-shaped cutting edge is disposed toward the rotation direction side, The blade disc of the peeler has a peel residue discharge groove formed in an arc shape below the cutting edge so as to follow the arc-shaped cutting edge and to penetrate it vertically.

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