JPH0928169A - Grain-grading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grain-grading device capable of preventing its deformation due to an molded product-pulling operation, etc., and capable of always surely obtaining the accurately integrally molded grading board by disposing on a grading board a stopper pin for preventing the deformation of the grading board on the detachment of a side mold after the molding work. SOLUTION: In a grain-grading device whose grading board 22 having an approximately U-shaped cross section is integrally molded with an upper mold 57, a lower mold 58 and a side mold 59 for molding the side part of the grading board 22, a stopper pin for preventing the deformation of the grading board 22 on the detachment of the side mold 59 after the molding work is disposed on the grading board 22. Therein, a core part 59a for forming a sealing groove 53 is preferably formed on the side mold 59 in the shape protruded in the inside direction. A melted resin is preferably filled into a space formed between the combined upper, lower and side molds 57, 58 and 59 to mold the main body of the grading board 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain sorting device such as an oscillating sorting disc used in a threshing unit such as a combine.

[0002]

Conventionally, in the case of integrally molding a rocking sorting board with resin, in addition to the upper die and the lower die, the undulations such as the recesses on the side surface of the sorting board are formed by using a side die called a side core. When processing is performed and these molds are removed after processing, the side mold is first removed, and when this side mold is removed, the contact part of the sorting board that contacts the core part of the side mold is in the removal direction. It deforms when it is pulled.

[0003]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a grain is formed by integrally molding a sorting board having a substantially cross-section in cross section with an upper die and a lower die and a side die for molding a side portion of the sorting board. In the sorting machine, a stopper pin is provided on the sorting board to prevent deformation of the sorting board when removing the side die after processing.When removing the side die, the contact part with the core of the side die on the sorting board side is removed. Even if it is pulled in the same direction, the fitting relationship between the upper or lower mold that forms the stopper pin and this pin prevents deformation of this part due to pulling out, etc. It can be possible to obtain goods.

[0004]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 is an explanatory side view of a forming state of an oscillating sorting machine, FIG. 2 is an overall side view of a combine, and FIG. 3 is a plan view of the same. In FIG. 1, (1) is a truck on which a traveling crawler (2) is mounted. A frame, (3) is a machine frame installed on the track frame (1), and (4) is a feed chain (5) stretched to the left side, and has a built-in handling cylinder (6) and a processing cylinder (7). Threshing section, (8) is a mowing section provided with a cutting blade (8a) and a grain culm transport mechanism, and (9) is attached to the rear side of the threshing section (4), and has a straw chain (10) and a straw tine. (11) A straw processing unit facing the end, (12) a driver's cab provided with a driver's seat (13) and a driving operation unit (14), (1)
5) is installed in the front part on the right side of the machine base (3) and the engine (1
6) is an engine part internally provided, and (17) is a grain tank which is arranged at the rear of the engine part (15) and stores the grain from the threshing part (4) through the fried cylinder (18), It is configured to continuously perform mowing and threshing work.

Further, as shown in FIGS. 4 to 6, (1
9) is a handling chamber in which an axial-flow-type handling barrel (6) axially mounted in the longitudinal direction of the machine body is installed, (20) is a handling port for inserting grain culms into the handling chamber (19), and (21) is The crimp net stretched under the handling chamber (19), and (22) is a rocking sorter which is rockably supported in the front-rear direction via a rocking link (23) and a guide roller (24). The feed pan (25) located below the front part of the crimp net (21) and the chaff sheave (2 located below the rear part of the crimp net (21).
6) and the Glen Sheave (27) disposed below the chaff sheave (26) constitute the rocking sorter (22), and the upper and lower sieve lines (22) are provided behind the rocking sorter (22). 28) and (29) are integrally mounted.

Further, in the figure, (30) is the sorting board (2
2) Karatomi which sends the sorting wind in the direction, (31) is the first conveyor to take out the grains to the grain tank (17) through the fried cylinder (18), and (32) is the second conveyor. A second conveyor for returning to the front part of the rocking sorting board (22) through a tube (33), and (34) threshing by facing the dust outlet at the rear end of the processing chamber above the sieving line (28). Suction port (35) on the left side wall
And a swing sorter (22) for oscillating the grains threshed by the handling cylinder (6) and the processing cylinder (7).
, And only the sizing is taken out to the grain tank (17), and the straw is discharged through a straw chain (10) and a tine (11). 9), and is configured to be cut and discharged outside the machine after cutting.

As shown in FIGS. 7 to 9, the sorting board (2
2) is a resin-integral molded product made of synthetic resin such as polypropylene and formed into a dish-shaped saucer shape whose upper and rear surfaces are open, and a feed pan (25) and a rear transfer rack connected to the rear part of the feed pan (25). (38), the Glen Sheave (27), and the left and right side walls (39) (40) are integrally formed, and a pair of left and right support arms (41) that are connected to the swing link (23) are integrally formed on the bottom surface of the front end. are doing.

The chaff sheave (26) has an inverted T-shaped cross section between the left and right side walls (39) (40) of the sorting board (22).
Nine chaff sheave fins (42) are laterally mounted in a front-back-rear-high tilted posture at regular intervals in the front-rear direction. This fin (42) and this fin (42)
A chaff sheave (26) is composed of left and right flanges (43) provided on the left and right end surfaces, and a rotation fulcrum shaft (44) and a rotation amount regulating shaft (45) which are two parallel shafts provided on both outer ends of the flange (43). The fins (42) are also used in the sorting board (2
As in 2), it is integrally molded with a synthetic resin such as polypropylene.

Furthermore, the left side wall (3) of the sorting board (22)
9) has a fin inlet / outlet (46) for inserting / removing the fin (42) from the left side, and a closing plate (47) for closing the inlet / outlet (46) is bolted to the outer surface of the left side wall (39). While being freely fixed, the fin (42) has nine pivotal support holes (4) in the closing plate (47) and the right side wall (40).
8) and nine arc-shaped long holes (49) centered on the hole (48), and the closing plate (47) and the right side wall (4) are formed.
0), the fulcrum shafts (44) and the regulating shafts (45) at both ends of the fin (42) are fitted into the fulcrum holes (48) and the elongated holes (49), and the elongate holes (44) are centered on the fulcrum shafts (44). The angle of inclination of the fin (42) can be adjusted within the range of (49).

Furthermore, the left and right side walls (39) (40) of the sorting board (22) and the left and right side walls (50) (5) of the thresher casing.
The seal material (52) for filling the gap with 1) is provided, and the seal grooves (53) for mounting the seal material (52) are provided with the left and right side walls (39) (40) of the sorting board (22).
Is formed over the entire outer surface of the upper part of the upper and lower sides of the left and right side walls (39) (40) and has upper and lower protruding edges (54).
(55) is projected horizontally to form a U-shaped cross section,
An inner side surrounded by the protruding edges (54) and (55) is formed in a seal groove (53), and a sealing material (52) is fitted into the seal groove (53), so that a side wall ( 39) The retaining portion (52a) of the sealing material (52) is fitted into the circular fitting hole (56) formed in (40), and the tip of the lip (52b) is attached to the inner surface of the side wall (50) (51). It is configured to be slid and prevented from leaking from a gap between the sorting board (22) and the side walls (50) and (51).

By the way, as shown in FIG. 1, the molding dies for molding the sorting board (22) are an upper mold (57) and a lower mold (58), and a side core for molding the seal groove (53). A side mold (59) is used. A core part (59a) forming the seal groove (53) is formed in the side mold (59) so as to project inward, and the upper mold (57) and the lower mold (59) are formed. When the mold (58) and the left and right molds (59) are united, a gap formed inside is filled with molten resin to mold the main body of the sorting board (22).

After the molding process, the side mold (59) is first removed, and then the upper mold (57) and the lower mold (58) are divided from the mold of the sorting board (22) which is a molded product. In this case, five stopper pin portions (54a) are integrally formed on the upper surfaces of the upper protruding edges (54) on both the left and right sides of the sorting board (22), and five stopper pin portions (54a) are formed in the upper die (5).
7) so that the side mold (59) is removed in the lateral direction, the projecting edge (5) wrapping the core (59).
4) The pin portion (54) is not moved without following the (55).
The movement is regulated by a) so that the proper shape is maintained.

As shown in FIGS. 7 and 9, a horizontal rib (60a) is provided between the left and right support arms (41) on the bottom of the sorting board (22).
Also, the vertical wall (61) formed between the feed pan (25) and the rear transfer rack (38) and the support arm (4).
1) Left and right vertical side ribs (62) are formed between the left and right vertical side ribs (62), and three parallel horizontal ribs (60b) (60c) (60d) and a horizontal rib (60a) are formed between the left and right vertical side ribs (62). And three parallel central longitudinal ribs (63a) (63b) (63c) are formed between the vertical ribs (61) and the side wall (62), respectively.
3b) (63c) has a large height, and the central vertical rib (63c)
a) Three lateral ribs (6) on the front end side of (62b) (63c)
0a, 60b, and 60c are formed to have a large height, and the lateral ribs (60d) on the rear end side are formed to have substantially the same height as the side ribs (62). Then, a rib with a high rib height (60
b) Gates (gates) are provided at two substantially central positions (a) and (b) of (63c), and these ribs (60a) to
(60d) By increasing the number of (62), (63a) to (63c) and increasing the height, the flow rate at the time of pouring the resin is increased so that the resin spreads to every corner to facilitate molding. It is configured to be performed. (Note that the lower die (5
8), the ribs (60b) and (63c) are provided with gates. ) As a result, it is possible to prevent the occurrence of resin discontinuities or non-fusion portions that do not integrally melt in the molded product of the sorting board (22), and it is possible to improve strength and durability and to stably improve quality. Is.

The ribs (60a) to (60d) (6)
2) (63a) to (63c) and feed pan (25)
Each corner part (R1) with the bottom surface and the vertical wall surface (61)
(R2) and (R3) are formed on a small arc surface or slope (R is attached to all corners), and these corners (R
1) It is configured to prevent concentration of stress applied to (R2) and (R3) and to disperse force to improve durability.

Further, as shown in FIG. 7 and FIG. 11, in the Glen sieve (27), the height dimension (B) of the wall portion (65) between the hole portions (64) is changed to the width dimension. It is formed to be larger than (A) (B> A) to improve the hot water flow at the time of molding, and to improve the strength and the sorting performance.

As shown in FIG. 10, the flange (43)
The rib (66) is provided on the side of the restricting shaft (45) that partially connects to the fulcrum shaft (44) that connects all of the end faces to each other, and the rib (66) between the fin (42) and the restricting shaft (45). Triangular ribs (66) are integrally formed on the connecting corners so as to improve the hot water flow in this portion and prevent shrinkage cavities (contraction cavities).
Especially for the length (L1) of the fin (42), the fulcrum shaft (4
4) and the length (L2) between the shaft centers of the regulation shaft (45) is large (L2> L1), it is necessary to install the ribs (66). Further, the tip end shapes of the fulcrum shaft (44) and the regulation shaft (45) are formed in a taper shape having a longer inclination (α) (α≅30 °) and a longer length (C) than in the conventional case, and the assembly work is performed. It is provided to facilitate the above.

As shown in FIGS. 7 and 11, an iron plate gren pan (67) is separately attached to the rear part of the feed pan (25), and the rear part of the feed pan (25) has a step and has a low height. The upper surface of the feed pan (25) and the upper surface of the Glen pan (67) are formed to be substantially flush with each other when they are formed on the mounting portion (25a) and the Glen pan (67) is mounted on the mounting portion (25a). Bread (2
5) The front side of the step (25b) of the feed pan (25) serving as a joint of (67) is the thickness (e) of the Glen pan (67).
The feed pan (25) is formed to have a larger step size (f), and the feed pan (25) is gently raised in front of the step (25b).
It is configured to promote smooth flow-down without catching the objects to be sorted on 7).

[0018]

As is apparent from the above embodiments, according to the present invention, a sorting board (22) having a substantially upside-down cross section is provided with an upper die (57) and a lower die (58) and side portions of the sorting board (22). In a grain selection device that is integrally formed with a side die (59) to be formed, a sorting board (2) is attached when the side die (59) is removed after processing.
Since the stopper pin portion (54a) for preventing the deformation of 2) is provided on the sorting board (22), the core portion of the side die (59) on the sorting board (22) side when the side die (59) is removed. (5
The upper die (57) for molding the stopper pin portion (54a) even when the contact portion with 9a) is pulled in the removing direction.
Alternatively, due to the fitting relationship between the lower die (58) and the pin portion (54a), deformation of this portion due to withdrawal or the like is prevented, and a proper integrally molded product of the sorting board (22) is always ensured without loss. It is possible to obtain such a remarkable effect.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a molding processing state of an oscillating sorting board.

FIG. 2 is an overall side view of the combine.

FIG. 3 is an overall plan view of the combine.

FIG. 4 is an explanatory sectional view of a threshing unit.

FIG. 5 is a side view of a swing sorting board.

FIG. 6 is a cross-sectional explanatory view of a swing sorting board.

FIG. 7 is a cross-sectional side view of a swing sorting board.

FIG. 8 is an explanatory plan view of a swing sorting board.

FIG. 9 is an explanatory bottom view of the swing sorting board.

FIG. 10 is a partial explanatory view of a swing sorting board.

FIG. 11 is a partially enlarged view of the swing sorting board.

[Explanation of symbols]

 (22) Sorting board (54a) Stopper pin section (57) Upper mold (58) Lower mold (59) Side mold

Claims (1)

[Claims] 1. A grain selecting device in which an upper die and a lower die of a sorting board having a substantially cross-sectional shape in cross section and a side die for molding a side portion of the sorting board are integrally formed. A grain sorting apparatus, wherein a stopper pin portion for preventing deformation of the sorting board at the time of removal is provided on the sorting board.