JP2014176575A - Shell cracking machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an improved shell cracking machine enabling the shell of a seed to be more efficiently cracked than before.SOLUTION: A shell cracking machine M includes a shell cracking device 1 for cracking the shell of a seed B, the shell cracking machine M comprising: a feeding device 2 for transporting the seed B with a shell from an upstream which supplies the seed B, toward a downstream where the shell cracking device 1 is disposed; and a separator 3 which is disposed upstream of the shell cracking device 1 and separates the seeds B transported by the feeding device 2 into two lines. The shell cracking device 1 further comprises: a first shell cracking section 1L for cracking the shells of the seeds B on one line separated by the separator 3; and a second shell cracking section 1R for cracking the shells of the seeds B on the other line separated by the separator 3.

Description

  The present invention relates to an improvement of a shell splitting machine.

  Incainchi (scientific name Plukenetia volubilis L.), also known as green nut or satchainchi, is a Euphorbiaceae plant that inhabits South America and produces seeds in star-shaped fruits. And the oil extracted from the seed of this inca inch is conventionally utilized for food.

  Incainchi seeds have a hard brown shell, and when oil is extracted from seeds with this shell attached, the yield of oil falls. For this reason, it is preferable to divide the brown shell of the seed of the inca inch and extract the oil from the seed from which the shell has been removed.

  The brown shell of the inca inch seed can be broken with, for example, a ginkgo husk. The ginkgo shell splitter disclosed in Patent Document 1 is formed in a pliers shape, and can grip a ginkgo shell by gripping the grip with the ginkgo sandwiched between the front split shell portions.

JP-A-8-56858

  However, when the conventional ginkgo husk is used to break the seed shell, the efficiency is poor. Therefore, an object of the present invention is to provide a shell splitting machine capable of splitting a seed shell more efficiently than in the past.

  Means for solving the above-mentioned problem is that, in the splitting machine provided with a splitting device for splitting the seed shell, the seed is directed from the upstream where the seed with the shell is supplied to the downstream where the splitting device is located. And a separator that is arranged on the upstream side of the shell splitting device and that separates the seeds that are moved by the feed device into two rows, wherein the shell splitting device is divided into one row by the separator. A first split portion for splitting the seed shell, and a second split portion for splitting the seed shell in the other row separated by the separator.

  According to the present invention, the seeds moved by the feeding device are divided into two rows by the separator, and the shell splitting device splits the seed shells in one row, and the seed shells in the other row. Since the second splitting portion is provided, the seed shell can be broken more efficiently than in the past.

It is the top view which showed the shell splitter which concerns on one embodiment of this invention. It is the perspective view which expanded and showed a part of shelling machine which concerns on one embodiment of this invention. It is the longitudinal cross-sectional view which expanded and showed the center clamping piece and the side clamping piece part of the shell splitter which concerns on one embodiment of this invention. It is explanatory drawing which shows operation | movement of the shell splitter which concerns on one embodiment of this invention, and shows a dividing process. It is explanatory drawing which shows operation | movement of the shell splitting machine which concerns on one embodiment of this invention, and shows the transition process to the shell splitting process. (A) is explanatory drawing which shows operation | movement of the shell splitting machine which concerns on one embodiment of this invention, and shows a shell splitting process. (B) is a longitudinal cross-sectional view which expands and shows the 1st splitting part in the splitting process of the splitting machine which concerns on one embodiment of this invention.

  Hereinafter, a shell splitting machine according to an embodiment of the present invention will be described with reference to the drawings. The same reference numerals used throughout the several drawings indicate the same parts.

  As shown in FIG. 1, the shell splitting machine M according to the present embodiment includes a shell splitting device 1 that splits the shell of the seed B, and the above-mentioned seed B with the shell is supplied from the upstream side. A feeding device 2 that moves the seed B toward the downstream side of the shell splitting device 1 and a separator 3 that is arranged upstream of the shell splitting device 1 and that is moved by the feeding device 2 and divides the seed B into two rows. And. Then, the shell splitting device 1 splits the first shell splitting portion 1L that splits the shells of the seed B in one row divided by the separator 3, and the shell of the seed B in the other row split by the separator 3. And a second split portion 1R.

  Hereinafter, in detail, the shell splitting machine M according to the present embodiment is used to split the brown shell of the inca inch seed B and remove the shell from the seed B. Thereby, oil can be efficiently extracted from the seed from which the shell has been removed (hereinafter referred to as the target portion).

  Subsequently, the shell splitting machine M in the present embodiment includes the above-described shell splitting device 1, the feeding device 2, and the separator 3, and also supports the support base 4 that supports them and the seed B with the shell feeding device 2. A hopper (not shown) that is fed to the shell, a split roller 6 that further splits the shell of the seed B that has been split by the splitting device 1, and a seed shell B that has been split by the splitting device 1 and the split roller 6 And a separation device (not shown) for separating the target portion and the target portion. It should be noted that the hopper and the sorting device (not shown) may adopt any configuration, and since various configurations are known as the hopper and the sorting device, detailed description thereof is omitted here.

  Further, the seed B processing step by the shell splitting machine M in the present embodiment is moved by the feeding step of feeding the seed B with the shell from the hopper (not shown) to the feeding device 2 and the feeding device 2. Separation process of dividing seed B into two rows by separator 3, shell splitting step of splitting seed B shells of each row by shell splitting device 1, and auxiliary shell splitting step of further splitting seed B shells by shell splitting roller 6 And a separation process in which the seed B which has been broken is divided into a brown shell and a target part by a separation device (not shown). Then, the auxiliary shell splitting process is passed to the most downstream sorting process.

  The feeding device 2 that moves the seed B and shifts the process feeds the wide belt 20 formed in a ring shape in the direction indicated by the arrow Y in FIG. 1 and moves the seed B serving as a transported article on the belt 20 to move. It consists of a belt conveyor. Hereinafter, the left side in the belt 20 feeding direction (arrow Y in FIG. 1) is referred to as “left side”, and the right side in the belt 20 feeding direction is referred to as “right side”. In the present embodiment, the drive source for driving the belt 20 is a motor, but may be another actuator, or the belt 20 may be driven manually.

  Subsequently, the separator 3 that divides the seed B moved by the feeding device 2 into two rows rises along the feeding direction of the belt 20 so as not to contact the belt 20 on the upper side of the belt 20, as shown in FIG. And a connecting portion 31 extending downstream from the plate 30 (on the side of the shell splitting device).

  Returning, as shown in FIG. 1, the shell splitting device 1 that is arranged on the downstream side of the separator 3 and breaks the shell of the seed B is a central clamping piece that stands up so as not to contact the belt 20 at the center of the belt 20. 10 and a pair of side clamping pieces 11L, 11R that stand upright so as not to contact the belt 20 and a drive device 5 that drives the side clamping pieces 11L, 11R.

  Support pieces 40, 40 arranged across the belt 20 and crossing the upper side of the belt 20 are fixed to the support base 4 on the upstream side and the downstream side, and the upstream side of the center clamping piece 10. The end portion is connected to the support piece 40 on the upstream side, and the downstream end portion of the center holding piece 10 is connected to the support piece 40 on the downstream side. That is, the center clamping piece 10 is fixed to the support base 4 via the pair of support pieces 40 and 40.

  Further, as shown in FIG. 3, the center clamping piece 10 is a columnar member having a shape in which pipes cut in half are joined back to back, and stands up along the feeding direction of the belt 20. Further, on the left side and the right side of the center clamping piece 10, center support surfaces 10a and 10b having a C-shaped cross section with a recessed central part are formed.

  On the other hand, the pair of side clamping pieces 11L and 11R arranged on the left and right sides of the central clamping piece 10 are columnar members having a shape obtained by cutting a pipe in half, and are along the feed direction of the belt 20 like the central clamping piece 10. Standing up. That is, the center clamping piece 10 and the side clamping pieces 11L and 11R are arranged substantially in parallel. Furthermore, side support surfaces 11a and 11b having a C-shaped cross section with a recessed central portion are formed on one side of each of the side clamping pieces 11L and 11R.

  The side support surface 11a formed on the left side sandwiching piece 11L is disposed to face the left center support surface 10a of the center sandwich piece 10, and the side support surface 11a and the center support surface 10a disposed on the left side. Becomes mirror-symmetrical and constitutes the first split portion 1L. On the other hand, the side support surface 11b formed on the right side sandwiching piece 11R is disposed to face the right center support surface 10b of the center sandwich piece 10, and the side support surface 11b and the center support surface 10b disposed on the right side. Becomes mirror-symmetrical and constitutes the second split portion 1R.

  Furthermore, as shown in FIG. 1, guide pieces 12L and 12R extending while being inclined toward the upstream side are connected to the upstream side (hopper side) ends of the side clamping pieces 11L and 11R, respectively. The pieces 12L and 12R are spaced apart toward the upstream side and are arranged in a C shape. Further, the upstream end portions 12a and 12a of the guide pieces 12L and 12R are set so as to be arranged outside the belt 20 even when the side clamping pieces 11L and 11R are driven by the driving device 5. .

  The both side holding pieces 11L and 11R are connected via a pair of connecting pieces 13 and 13 arranged on the upstream side and the downstream side. The upstream connecting piece 13 is connected to the separator 3 The connection part 31 (FIG. 2) is connected. The both side holding pieces 11L and 11R constitute a movable body A together with the separator 3 and the two guide pieces 12L and 12R. For this reason, the separator 3, the side clamping pieces 11L and 11R, and the both guide pieces 12L and 12R are simultaneously and integrally driven by the driving device 5 as the movable body A.

  Further, each of the connecting pieces 13 and 13 is disposed substantially perpendicular to the feeding direction of the belt 20 (arrow Y in FIG. 1), and the left side in FIG. The movable body A includes an input piece 14 that is bridged between connecting pieces 13 and 13 protruding from the belt 20.

  Subsequently, the driving device 5 that drives the movable body A is supported by the support 4 and is disposed on the left side of the belt 20 that carries the seed B. The driving device 5 includes a cam 50 that rotates to push the movable body A to the right side, springs 51 and 51 that pull back the movable body A pushed by the cam 50 to the left side, and a drive source that rotates the cam 50. (Not shown). In the present embodiment, the feeding device 2 and the driving device 5 share a driving source, and can rotate the cam 50 and drive the belt 20 with one driving source. However, the drive source for the feeding device 2 and the drive source for the drive device 5 may be provided separately. In this case, the drive source for the drive device 5 may be composed of a motor or other actuator, similarly to the drive source for the feed device 2, or the cam 50 may be manually rotated.

  The cam 50 is formed in a disc shape, and the outer peripheral surface 50 a is in sliding contact with the input piece 14 of the movable body A. Furthermore, the rotating shaft 50b of the cam 50 is provided eccentrically, and the distance from the rotating shaft 50b to the outer peripheral surface 50a is not uniform. On the other hand, the springs 51, 51 are arranged along the feeding direction of the belt 20 and are arranged so as to sandwich the cam 50, and the one side 51 a on the side opposite to the movable body is fixed to the support base 4, and the movable body side The other side 51b is connected to the input piece 14 and urges the movable body A to be pulled toward the cam side (left side in FIG. 1).

  Subsequently, the splitting roller 6 that further splits the shell of the seed B that has been split by the splitting device 1 is supported by the support base 4 and arranged so as to cross the upper side of the belt 20. The split roller 6 rotates so as to send the seed B to the downstream side, and is arranged with a predetermined gap from the belt 20. When the seed B passes through the gap, the seed roller is separated from the belt 20. B is sandwiched.

  Next, the operation of the shell splitting machine M according to this embodiment will be described. The seed B with the shell is supplied from a hopper (not shown) onto the belt 20 of the feeding device 2 (supply process), and rides on the belt 20 and moves downstream.

  Then, as shown in FIG. 4, when the seed B moving on the belt 20 comes into contact with the separator 3, it rolls to the left side or the right side, and the left side row that moves the left side of the separator 3 and the right side of the separator 3 It is divided into a moving right column (sequencing step).

  Moreover, in this Embodiment, the separator 3 comprises the movable body A with the side clamping pieces 11L and 11R, and can move right and left in FIG. For this reason, when the movable body A is pushed out by the cam 50 and the separator 3 moves to the right side as indicated by a two-dot chain line in FIG. 4, the seed B mainly moves on the left side of the separator 3. Further, as shown by the solid line in FIG. 4, when the separator 3 moves to the left side, the seed B mainly moves on the right side of the separator 3. Thereby, the row | line | column of the seed B which moves the left side of the separator 3 (left side column), and the row | line | column of the seed B which moves the right side of the separator 3 can be made alternately (right side column).

  Subsequently, when the seed B in the left row moving on the belt 20 and moving on the left side of the separator 3 abuts on the left guide piece 12L as shown in FIG. 5, the belt 20 along the left guide piece 12L. It moves up and is guided between the left side pinching piece 11L and the center pinching piece 10. Further, when the seed B in the right row that moves on the belt 20 and moves on the right side of the separator 3 comes into contact with the right guide piece 12R, the seed B moves on the belt 20 along the right guide piece 12R, and moves to the right side. It is guided between the clamping piece 11R and the central clamping piece 10.

  6A, the cam 50 is rotated, and the input piece 14 of the movable body A is in contact with a portion of the outer peripheral surface 50a of the cam 50 that is away from the rotation shaft 50b. Then, the movable body A is pushed to the right side by the cam 50 against the urging force of the springs 51, 51, and the left side clamping piece 11L and the central clamping piece 10 approach each other. Thereby, as shown in FIG. 6 (b), the seed B in the left row is placed between the side support surface 11a of the left side sandwiching piece 11L and the left central support surface 10a constituting the first split portion 1L. And the seed B shell is split (shell splitting step). At this time, although not shown in FIG. 6, the right side sandwiching piece 11 </ b> R is separated from the center sandwiching piece 10, so that the shells of the seeds B in the right row are not broken.

  Further, when the cam 50 further rotates and the input piece 14 of the movable body A comes into contact with a portion of the outer peripheral surface 50a of the cam 50 close to the rotation shaft 50b as shown by a solid line in FIG. The movable body A is pulled back to the left side by the urging force of the springs 51, 51, and the right clamping piece 11R and the central clamping piece 10 approach each other. As a result, the seed B in the right row is sandwiched between the side support surface 11b of the right side holding piece 11R and the right center support surface 10b of the second side splitting portion 1R, and the seed B shell is split. (Shell splitting process). At this time, since the left side sandwiching piece 11L is separated from the center sandwiching piece 10 as shown by the solid line in FIG. 6A, the shell of the seed B in the left row is not broken.

  Subsequently, when the seeds B of each row into which the shells are broken by the shell splitting device 1 enter the gap between the shell splitting roller 6 and the belt 20, the shells of the seeds B are sandwiched between the shell splitting roller 6 and the belt 20. Further cracking (auxiliary shell splitting process).

  Then, the seeds B in each row where the shells are broken fall from the belt 20 of the feeding device 2 and are supplied to a separation device (not shown) to be separated into the shells of the seeds B and target portions (sorting step).

  Next, the effect of the shell splitting machine M according to the present embodiment will be described. The splitting machine M according to the present embodiment includes a splitting device 1 that splits the shell of the seed B, and from the upstream where the seed B with the shell is supplied to the downstream where the splitting device 1 is located. A feed device 2 that moves the seed B toward the target and a separator 3 that is arranged on the upstream side of the shell splitting device 1 and that separates the seed B that is moved by the feed device 2 into two rows. The first splitting portion 1L that splits the shells of the seed B in the left (one) row divided by the separator 3 and the right (other) row divided by the separator 3 And a second splitting portion 1R that splits the shell of seed B.

  Therefore, the seed B moved by the feeding device 2 is divided into two rows by the separator 3, and the shells of the seeds B in each row are divided by the first splitting portion 1L and the second splitting portion 1R of the splitting device 1. Compared to the case of using a conventional ginkgo husk that requires each seed B to be held and broken, the seed B shell can be broken efficiently.

  Further, in the present embodiment, the shell splitting machine M includes the support device 4 that supports the feeding device 2 and the shell splitting device 1. Further, the shell splitting device 1 includes a central clamping piece 10, side clamping pieces 11L and 11R standing on both sides of the central clamping piece 10, and a driving device 5 for driving the side clamping pieces 11L and 11R. At the same time, the center clamping piece 10 is fixed to the support base 4.

  Further, center support surfaces 10a and 10b are formed on both sides of the center holding piece 10, respectively, and side support surfaces 11a and 11b are formed on one side of the side holding pieces 11L and 11R, respectively. The side support surface 11a of the left side (one) side clamping piece 11L is arranged to face the left side (one) center support surface 10a, and the first shell split together with the left side center support surface 10a. Part 1L is configured. Further, the side support surface 11b of the right (other) side clamping piece 11R is arranged to face the right (other) central support surface 10b, and the second shell split together with the right central support surface 10b. Part 1R is configured.

  Therefore, by driving the side clamping pieces 11L and 11R with the driving device 5 and sandwiching the seed B between the central clamping piece 10 and the side clamping pieces 11L and 11R, the shell of the seed B can be easily broken. .

  Further, since both the central support surfaces 10a and 1b are disposed between the side support surfaces 11a and 11b, if one of the central sandwich piece 10 or the both side sandwich pieces 11L and 11R is moved, the side located on the left side The seed B can be sandwiched between the support surface 11a and the center support surface 10a and between the side support surface 11b and the center support surface 10b located on the right side. Therefore, when the seed B is divided into two rows, the shell of the seed B can be efficiently divided.

  Further, in the present embodiment, the both side holding pieces 11L and 11R are connected via the connecting piece 13 to constitute the movable body A, and the driving device 5 rotates and pushes the movable body A. And a spring 51 that pulls back the movable body A pushed out by the cam 50.

  For this reason, using the force of the cam 50 that pushes out the movable body A, the left side holding piece 11L is brought close to the center holding piece 10, and the seed B shells in the left row are broken by the first shell splitting portion 1L. Can do. In addition, by using the force of the spring 51 that pulls back the movable body A, the right side holding piece 11R is brought close to the center holding piece 10 and the shells of the seed B in the row are split on the right side by the second shell splitting portion 1R. it can. Therefore, even if the seed B is divided into two rows, the configuration of the driving device 5 can be simplified.

  In the present embodiment, the feeder 2 includes a belt 20 that moves the seed B from the upstream side toward the downstream side with the seed B placed thereon. Furthermore, the separator 3 includes a rectangular plate-like plate 30 that rises along the feeding direction of the belt 20 on the upper side of the belt 20, and is connected to the both side holding pieces 11L and 11R. The movable body A is configured together with the side clamping pieces 11L and 11R.

  For this reason, when the movable body A moves so that the left side clamping piece 11L approaches the central clamping piece 10, the separator 3 also moves in the same manner so that the seed B mainly passes through the left side of the plate 30. Become. When the movable body A moves so that the right side clamping piece 11R approaches the central clamping piece 10, the separator 3 also moves in the same manner so that the seed B mainly passes through the right side of the plate 30. .

  That is, in the present embodiment, by providing the above configuration, the left seed B rows and the right seed B rows can be substantially alternately arranged. Therefore, in the case of splitting the seed B shells alternately between the first splitting portion 1L and the second splitting portion 1R as in the present embodiment, the first splitting portion 1L and the second splitting portion 1R are efficient. In particular, seed B can be supplied, which is particularly effective.

  Further, in the present embodiment, the guide pieces 12L and 12R extending while being inclined toward the upstream side are connected to the upstream end portions of the side clamping pieces 11L and 11R, respectively, and both the guide pieces 12L and 12R are connected. Are spaced apart toward the upstream side and are arranged in a letter C shape, and are set so that the upstream end portions 12a, 12a of the guide pieces 12L, 12R are always arranged outside the belt 20. .

  Therefore, the seed B can be guided by the guide pieces 12L and 12R between the side support surfaces 11a and 11b and the central support surfaces 10a and 10b constituting the first split portion 1L and the second split portion 1R. The shell of the seed B on the belt 20 can be reliably broken.

  Further, in the present embodiment, the splitting machine M includes a splitting roller 6 disposed downstream of the splitting device 1. The split roller 6 is supported by the support 4 and is disposed so as to cross the upper side of the belt 20. Further, the split roller 6 rotates so as to send the seed B to the downstream side, and is arranged with a predetermined gap from the belt 20, and when the seed B passes through the gap, the seed 20 is separated from the belt 20. B is sandwiched.

  For this reason, the shell of the seed B can be split by the shell splitting device 1 from the left and right sides, and the shell of the seed B can be split by the split roller 6 and the belt 20 from the top and the bottom. Therefore, the shell of the seed B can be broken more reliably.

  In the present embodiment, both the central support surfaces 10a and 10b and the both side support surfaces 11a and 11b are curved and formed in a C-shaped cross section, and the central support surface and the side support surfaces (10a and 11a, 10b and 11b) are mirror-symmetrical.

  Therefore, even if the seed B is flat like an inca inch, the seed B can be scooped up and sandwiched between the central support surfaces 10a, 10b and the side support surfaces 11a, 11b, and the seed B shell can be reliably broken. it can.

  Although preferred embodiments of the present invention have been described in detail above, it should be understood that modifications, variations and changes may be made without departing from the scope of the claims.

  For example, in the above embodiment, the shell splitting machine M is used to split the shells of seed B of Inca inches, but it may be used to split shells of other seeds such as ginkgo shells. Good. Moreover, although the said shell splitting machine M is equipped with the split roller 6 which splits the shell of the seed B supplementarily, you may abbreviate | omit the split roller 6.

  Further, in the above-described embodiment, the shell splitting device 1 fixes the fixed clamping piece 10 to the support base 4 and drives the side clamping pieces 11L and 11R by the driving device 5. However, although not shown, the side clamping pieces 11L and 11R may be fixed to the support base 4 and the fixed clamping piece 10 may be driven by the driving device 5.

  Moreover, in the said embodiment, the shell split parts 1L and 1R both break the seed B shell by sandwiching the seed B from the left and right. However, although not shown, one or both of the split portions 1L and 1R may sandwich the seed B from above and below, and the method of breaking the seed B shell can be changed as appropriate.

  Moreover, in the said embodiment, although the center support surfaces 10a and 10b and the side support surfaces 11a and 11b which comprise the split parts 1L and 1R are formed in C-shaped cross section, it is not restricted to this, A center support surface The shapes of 10a and 10b and the side support surfaces 11a and 11b can be appropriately selected.

  Moreover, in the said embodiment, both the side clamping pieces 11L and 11R are connected, the movable body A is comprised, and it drives simultaneously and integrally with the drive device 5. FIG. However, although not shown, the left and right side clamping pieces 11L and 11R may be driven by the driving device 5 separately.

  Moreover, in the said embodiment, although the feeder 2 consists of a belt conveyor, as long as the seed B can be moved from the upstream to the downstream, the structure of the feeder 2 can be selected suitably. is there.

  Moreover, in the said embodiment, the separator 3 comprises the movable body A with both side clamping pieces 11L and 11R, and is driven with the drive member 5. FIG. However, although not shown, the separator 3 may be fixed to the support base 4. The shape of the separator 3 is not limited to the above, and can be changed as appropriate.

  Moreover, in the said embodiment, although the separator 3, the center clamping piece 10, and both side clamping pieces 11L and 11R have a clearance gap between the belt 20 and are arrange | positioned so that it may not contact with the belt 20, 20 may be in sliding contact.

A movable body B seed M shell splitting machine 1 shell splitting device 1L first shell splitting portion 1R second shell splitting portion 2 feeding device 3 separator 4 support base 5 driving device 10 center clamping pieces 10a, 10b center support surfaces 11L, 11R side Nipping pieces 11a, 11b Side support surfaces 12L, 12R Guide piece 12a Upstream end 20 of guide piece Belt 30 Plate 50 Cam 51 Spring

Claims (5)

In a shell splitting machine equipped with a shell splitting device that splits the seed shell,
A feed device that moves the seed from an upstream side to which the seed with a shell is supplied toward a downstream side of the splitting device, and a seed that is arranged upstream of the splitting device and is moved by the feeding device With a separator that divides the
The splitting device includes a first splitting portion that splits the seed shells in one row divided by the separator, and a second splitting portion that splits the seed shells in the other row divided by the separator. A shell splitting machine characterized by A support for supporting the feeder and the splitting device;
The shell splitting device includes a central clamping piece, side clamping pieces that stand on both sides of the central clamping piece, and a driving device that drives one of the central clamping piece or both side clamping pieces, and the central clamping piece. The other of the piece or the both side clamping pieces is fixed to the support base,
A center support surface is formed on both sides of the center clamping piece, and a side support surface is formed on one side of each side clamping piece,
The side support surface of one of the side clamping pieces is arranged facing one of the central support surfaces, and constitutes the first split portion together with the one central support surface,
The said side support surface of the other said side clamping piece is arrange | positioned facing the said other said center support surface, and comprises the said 2nd split part with this other said center support surface. A shell splitting machine described in 1. The both side clamping pieces are connected via a connecting piece to form a movable body,
3. The shell splitting machine according to claim 2, wherein the driving device includes a cam that rotates and pushes out the movable body, and a spring that pulls back the movable body pushed out by the cam. The feeding device includes a belt that moves from the upstream side toward the downstream side with the seeds on the separator, and the separator is a rectangular plate-like shape that stands above the belt along the feeding direction of the belt. 4. The shell splitting machine according to claim 3, further comprising a plate, connected to the both side holding pieces, and constituting the movable body together with the both side holding pieces. A guide piece extending while being inclined toward the upstream side is connected to the upstream end of each side clamping piece,
The two guide pieces are spaced apart toward the upstream side, are arranged in a letter C shape, and are set so that the upstream end portions of the two guide pieces are always arranged outside the belt. The shell splitting machine according to claim 4.

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