Cutter disk of coat-peeling machine

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

Detailed Description of the Invention [Technical field]

[0001] The present invention relates to a blade disc of a peeler for peeling chestnuts, potatoes, and other objects that need to be peeled. [Background technology]

[0002] Conventionally, there is a peeling machine for peeling chestnuts, potatoes, and other objects, as disclosed in Patent No. 5329455 (see Patent Document 1). The blade disk 61 used in this peeling machine is shown in Fig. 9 and Fig. 10, and a plurality of blades 62 are attached radially toward the axis on the outer periphery of the upper surface of the blade disk 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 along the radial direction centered on the rotation axis. Fig. 9 and Fig. 10 are plan views of the blade disk 61, where 61a is a blade mounting seat and 61b is a linear peel waste discharge groove. Another patent is Japanese Patent No. 6575760. (See Patent Document 2). The blade disk 71 used in this peeler is shown in Figs. 11 and 12. A plurality of blade bodies 72 inclined with respect to the rotation direction of the blade disk 71 are attached to the outer periphery of the upper surface of the blade disk 71, which rotates continuously in the X direction in a horizontal plane. The blade disk 71 is arranged such that the cutting edge 72a of the blade body 72 faces the rotation direction of the blade disk 71, and the blade body 72 is arranged and fixed obliquely so that the inner peripheral end is located further in the direction of the rotation of the blade disk 71 than the outer peripheral end. Fig. 12 is a plan view of the blade disk 71 with the blade body 72 removed, where 71a is a blade body mounting seat and 71b is a straight peel waste discharge groove. P is 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 Patent No. 5329455 (Patent Document 1), as shown in FIG. 9, the linear blade tips 62a of the multiple blade bodies 62 arranged on the upper surface of the blade disk 61 are arranged so as to be parallel to the imaginary center line P along the radial direction centered on the rotation axis, so that as the blade disk 61 rotates in the direction of the arrow X, the object W to be peeled, such as chestnuts or potatoes, is urged by the rotation of the blade disk 61 to float and rotates at a slightly delayed speed in the same direction as the blade disk 61. At this time, the rotation speed of the blade bodies 62 is the same as that of the blade disk 61, and the object W to be peeled, which is in front of the blade tips 62a, strongly collides with the blade tips 62a at a substantially right angle to be peeled. Therefore, damage to the object W to be peeled is large, and the surface of the peeled object is scratched (bruised), or the scratched part is discolored, making it look bad, and the commercial value is reduced. In addition, since the object W to be skinned collides with the cutting edge 62a of the blade body 62 at a right angle, the hard skin of the object W to be skinned is pushed through (the blade is pressed against the object to be skinned and cut with strong force without moving the blade back and forth), and if the cutting edge 62a is not always kept sharp, the cutting edge 62a is difficult to cut into the skin, and a clean cut cannot be obtained. In order to keep the cutting edge 62a sharp, frequent sharpening of the cutting edge is necessary. Furthermore, since the skin is only cut for a short time when the object W to be skinned collides with the cutting edge 62a, it takes time to peel the entire object evenly. Even if the object W to be skinned collides with the cutting edge 62a, not all of the object W to be skinned is necessarily cut by the cutting edge 62a, and some objects are bounced back by the strong collision with each other and skin is not peeled. This may affect the increase in the overall skinning time.

[0005] To solve the above problems, a cutting disk of a peeling machine disclosed in Japanese Patent No. 6575760 is provided. In this cutting disk 71 shown in FIG. 11, the linear cutting edges 72a of a plurality of cutting bodies 72 arranged on the upper surface of the cutting disk 71 are obliquely arranged and fixed on the cutting disk 71 such that the inner peripheral side end is positioned further forward in the rotation progress direction of the cutting disk than the outer peripheral side end. Therefore, when the object to be peeled W strongly collides with the cutting edge 72a of the cutting body 72 and is peeled, the object to be peeled W moves slightly laterally (in the outer peripheral direction) with respect to the cutting edge 72a, approaching a "cutting-off" state. Accordingly, even a hard chestnut husk can be easily cut. However, since the cutting body 72 rotates together with the cutting disk 71 and the cutting edge shape is linear, the contact time between the object to be peeled W and the cutting edge 72a is extremely short, and it is immediately bounced off. Therefore, the contact time between each of a large number of objects to be peeled W and the cutting edge 72a is short, and it takes time for all the objects to be peeled W to be completely peeled. Even with the above-described configuration, for example, in the case of a chestnut with particularly tough skin as the object to be peeled, there are still quite a few chestnuts that bounce back without being cut when they collide with the linear cutting edge 72a. Chestnuts that bounce back many times are likely to have more impact marks, and when the peeled chestnuts are carefully inspected, those with many marks and discoloration and inferior quality can be found. This invention was made to solve the above-described conventional drawbacks, and its object is to obtain a product with few impact marks and discoloration on the surface of the core of the object to be peeled, a clean cut surface, and high commercial value. Further, by making a side slip while contacting the arc-shaped cutting edge for a longer time and cutting in, the cutting length on the surface of the object to be peeled W is increased, aiming to shorten the peeling time.

Means for Solving the Problem

[0006] The cutting disk in the peeling machine according to this invention has the following configuration in order to achieve the above object. The cutting edge of the blade body arranged on the upper surface of the blade disk is not formed in a straight line, but is formed in an arc in the length direction of the blade body. In a blade body of this shape, the object to be skinned W slides sideways along the arc-shaped cutting edge and moves in the outer circumferential direction, which is not achieved with a straight cutting edge even if the blade body is arranged diagonally or radially. This lengthens the time to cut into the object to be skinned W, shortens the overall processing time, and improves processing efficiency. The invention described in claim 1 is A peeling machine comprising a blade disk supported rotatably within a horizontal plane, a body portion surrounding the upper side of the blade disk, opening toward the blade disk and having an upper portion with an inlet through which objects to be peeled such as chestnuts and potatoes are fed, and a plurality of blades having cutting edges for peeling objects to be peeled are provided on the outer periphery of the upper surface of the blade disk, The blades on the blade disc have cutting edges formed in an arc in the longitudinal direction, the arc-shaped cutting edges are positioned toward the rotational direction of the blade disc, and a peeling waste discharge groove is provided below the cutting edges, penetrating the blade disc from top to bottom, in an arc-shaped manner 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 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 and cuts the hard skin on the surface of the object to be skinned by "pull cutting" (meaning that the blade is placed against the object to be skinned and moved back and forth to cut). Therefore, the sharpness is improved compared to the previous case where the object to be skinned was in a "push cut" state (meaning that the blade is pressed against the object to be skinned and cuts with a strong downward force without moving the blade back and forth). Rather than a "push cut" or a "pull cut" in a short time, Instead, the peeled object slides sideways along the arc-shaped cutting edge, resulting in a "pull-cut" that is in contact with the object for a long period of time, which increases the cutting length and eliminates the need to apply strong force to the object, reducing bruising and discoloration of the "peeled fruit" and improving its appearance. The fruit is also less likely to bounce back from impacts with the cutting edge as 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, improving overall processing efficiency. Effect of the Invention

[0008] According to this invention, the object to be skinned slides sideways along the arc-shaped cutting edge of the blade body while moving in an arc toward the outer periphery of the blade disc, lengthening the contact time with the cutting edge and enabling the cutting edge to dig deeper into the skin, thereby shortening the skinning time. Therefore, compared to the conventional method in which the bark was bounced back by repeatedly hitting the cutting edge and the peeling process was difficult, the processing time is shortened and the occurrence of scratches and discoloration is reduced. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is an exploded perspective view of an embodiment of the present invention. [Diagram 2] FIG. 1 is a plan view of an embodiment of the present invention. [Diagram 3] FIG. 2 is a plan view of the blade disc of the embodiment of the present invention with the blade body removed. [Figure 4] FIG. 2 is an enlarged cross-sectional view of a blade attachment portion according to an embodiment of the present invention. [Diagram 5] 1 is a perspective view of a skin scraping blade attached to the underside of the blade disc. FIG. [Figure 6] FIG. 2 is a front view of the blade body of the present invention. [Figure 7] FIG. 11 is a plan view of a second embodiment of the present invention. [Figure 8] FIG. 11 is a plan view of a blade disc according to a second embodiment of the present invention, with the blade body removed. [Figure 9] FIG. 1 is a plan view of a conventional blade disk. [Figure 10] FIG. 1 is a plan view of a conventional blade disc with the blade body removed. [Figure 11] FIG. 13 is a plan view of another conventional blade disk. [Figure 12] FIG. 13 is a plan view of another conventional blade disk with the blade body removed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[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 with a short cylindrical tube 4 formed on the upper surface side thereof, which is provided with a drive means (not shown) such as a motor for rotating the blade disc 2. A polygonal body 6 is connected to the upper side of the tube 4, which opens toward the blade disc 2 and surrounds the upper side of the blade disc 2, and into which the object to be peeled W is fed. The inner peripheral shape of the body 6 is formed into a hexagonal shape surrounding the rotation axis 2d of the blade disc 2. The upper side of the body 6 is closed by an upper lid 7. A hopper 7b having an input port 7a is provided on the upper side of the upper lid 7, and the input port 7a can be freely 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 object to be peeled W is input, and closes again when the input is completed. A bearing 8 is provided in the center of the upper surface 5a of the support base 5, and a rotating shaft 9 rotated by the driving 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 rotating shaft 9. A protrusion 10a is formed on the upper surface side 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 rotating shaft 9, so that the blade disc 2 and the rotating shaft 9 rotate together.

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

[0014] The blade body mounting seats 2a are portions where the blade body 3 having a sharp cutting edge is screwed to the upper surface of the blade disc 2, and are slightly recessed to match the shape of the blade body 3, and are arranged radially on the upper surface of the blade disc 2. In this embodiment, the blade body mounting seats 2a are provided at six locations every 60 degrees in the circumferential direction. (See Figs. 2 and 3). A skin waste discharge groove 2b that penetrates the blade disc 2 from top to bottom is formed under the arc-shaped cutting edge 3a of the blade body 3 attached to the blade body mounting seats 2a. In this embodiment, the skin waste discharge groove 2b is formed so as to follow the cutting edge 3a of the blade body 3 and to cut out to the outer periphery of the blade disc 2. It is sufficient that the front side of the skin waste discharge groove 2b in the rotation direction of the blade disc 2 follows the shape of the arc-shaped cutting edge 3a. At least two screw holes 2c are provided in each blade body mounting seat 2a, and the blade body 3 is screwed.

[0015] The blade body 3 has a cutting edge 3a formed in an arc shape, and the lower surface side is cut diagonally 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 central part is slightly bulged and wider than both ends in the longitudinal direction. The opposite side of the cutting edge 3a (the back side) is formed in a straight line, but is not limited to this.

[0016] On the upper surface of the rear part of the blade body 3, an inclined raised portion 3b is formed to bounce up the skin peeling object W passing over the blade body 3 (see Fig. 4). The upper surface of the blade body 3 is formed horizontally from the blade tip 3a to the central part, and an inclined raised portion 3b is formed from the central part to the trailing edge part on the side opposite to the blade tip 3a so as to be slightly higher than the blade tip 3a. Further, the blade body 3 is formed such that the horizontally formed blade tip 3a on its upper surface protrudes about 0.2 mm to 0.8 mm from the upper surface of the cutting disk 2, and is screwed to the blade mounting seat 2a of the cutting disk 2. The protruding value of the blade tip 3a is not limited to the above range. When rough peeling, 0.5 mm is preferred, and when finish peeling, about 0.2 to 0.3 mm is preferred, but it is determined according to various conditions such as the type and hardness of the skin peeling object.

[0017] The cylindrical portion 4 enclosing the cutting disk 2 is provided with a flat skin residue receiving portion 4a for receiving the skin residues peeled off by the blade body 3, and a skin residue discharge port 4b for discharging the peeled skin residues to the outside is opened in the skin residue receiving portion 4a. Further, on the lower surface side of the cutting disk 2, a plurality of scraping blades 11 (see Fig. 5) for rotating together with the cutting disk 2 and scraping the skin residues to the skin residue discharge port 4b are screwed. The scraping blade 11 includes an inclined blade portion 11a and moves the skin residues to the skin residue discharge port 4b while scooping up the skin residues. The scraping blade 11 is made of metal or synthetic resin.

[0018] The skin residue discharge port 4b communicates with a discharge chute 5b that guides the skin residues to the outside of the skin peeling machine 1, and the skin residues are discharged to the outside through the discharge chute 5b.

[0019] An actual discharge port 6a is opened on one surface of the hexagonal body 6, and a shutter 6b for opening and closing the actual discharge port 6a is vertically openable and closable by an actuator such as an air cylinder (not shown). A buffer material layer 6c such as a rubber sponge is attached to the inner wall of the body 6.

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

[0021] The process of peeling the skin of the object W (for example, the outer skin of a chestnut) by the peeler 1 will be described. The following process is automatically operated by an electrical signal. 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 disk 2 starts rotating in a predetermined direction (X direction). Next, when a fixed amount of the object W to be peeled is input from the hopper 7b, the object W to be peeled stays on the closed shutter 7c. After a preset time has elapsed, the shutter 7c moves horizontally to open the input port 7a, and the object W to be peeled that has stayed on the shutter 7c falls into the body 6. When the object W to be peeled falls, the shutter 7c closes. At this time, the actual discharge port 6a of the body 6 is blocked by the lowered shutter 6b, and the body 6 is in a closed state with no opening. In this state, the blade body 3 attached to the blade disk 2 rotating at high speed collides with the object W to be peeled, and the skin is peeled by the blade tip 3a. The peeled object W fed into the body 6 is urged by the centrifugal force generated by the rotation of the blade disk 2, and moves around inside the body 6 while being bounced off the buffer layer 6c provided on the inner wall of the body 6, and is displaced in the vertical direction, and the peeling is performed by the blade body 3 attached to the blade disk 2. When the peeling progresses and a predetermined time has passed, the shutter 6b that closes the fruit discharge port 6a of the body 6 rises and opens, so that the peeled fruit is discharged one after another from the fruit discharge port 6a as the blade disk 2 rotates. The opening time of the fruit discharge port 6a is also set in the control device. When the predetermined opening time has passed and the discharge of the fruit is completed, the shutter 6b descends and closes the fruit discharge port 6a again, and the peeled object W is waited for to be fed into the hopper 7b of the upper cover 7. The peeled object W may be fed manually by an operator or intermittently using a conveyor or the like. This series of steps is repeated.

[0022] The effects of the peeling machine 1 having the above configuration will be described. In this peeling machine 1, since the inner peripheral shape of the body 6 is hexagonal, the inserted object W to be peeled is urged by the centrifugal force generated by the rotation of the turntable 2, and while colliding with the buffer layer 6c provided on the inner wall and being bounced off, it moves around while changing its position many times. During this time, it hits the cutting edge 3a of the blade body 3 and is peeled. The cutting edge of the blade body 3 is formed in an arc shape, and the moving speed of the blade body 3 in the rotation direction is faster than the movement of the object W to be peeled, so the object W to be peeled moves toward the outer periphery while contacting the arc-shaped cutting edge 3a and is peeled. The object W to be peeled moves laterally along the arc-shaped cutting edge 3a for a longer time, so the "pull-cut" state is maintained for a longer time than in the case of a straight cutting edge. Therefore, even the hard outer skin of chestnuts can be cut quickly and easily.

[0023] The blade disc 21 of the second embodiment shown in Fig. 7 has the blade body 3 arranged at an angle, which allows for more efficient peeling compared to 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 a bolt hole 21c for mounting the above-mentioned blade body 3.

[0024] In this embodiment, the blade body 3 is arranged at an angle to the rotational direction of the blade disc 21, so that the object W to be skinned is maintained in contact for a long time on the blade disc 21 due to the centrifugal force causing it to move in the outer circumferential direction and the interaction with the arc-shaped blade tip 3a, thereby enabling 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 shortened and it takes a long time to finish peeling the entire object W to be peeled.

[0025] [Explanation of symbols]

[0026] 1. Peeling machine 2. Blade 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 waste discharge groove 5...Support stand 5b Discharge chute 6... Body 6a Actual discharge port 7...Top lid 7a...Inlet 21...Cutting disk of the second embodiment 21a Blade mounting seat 21b・Leather dregs discharge groove P...Center line

Claims

[Claim 1] A peeling machine comprising a blade disk supported rotatably within a horizontal plane, a body portion surrounding the upper side of the blade disk, opening toward the blade disk and having an upper portion with an inlet through which objects to be peeled such as chestnuts and potatoes are fed, and a plurality of blades having cutting edges for peeling objects to be peeled are provided on the outer periphery of the upper surface of the blade disk, 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 peeling 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.

Images