JPH0451038Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a molding and extrusion device for a roll forming machine that compresses and molds grass etc. into briquettes.
More specifically, the present invention relates to a forming and extruding device for a roll forming machine that can always form and extrude briquettes of uniform density even if the amount of grass etc. supplied to the roll forming chamber varies.

[Conventional technology]

Conventionally, in a roll forming machine that forms grass, etc. into briquettes, grass, etc. is supplied from one end on the inlet side to a roll forming chamber consisting of a plurality of compression rolls with both ends pivoted, and the briquettes formed into a cylinder are fed into a roll forming chamber consisting of a plurality of compression rolls with both ends pivoted. There is known a device in which it is pushed out from the other end on the exit side by a feeding action.

[Problems that this invention attempts to solve]

However, in this type of roll forming machine, when the amount of grass, etc. supplied increases during operation, it is necessary to increase the feeding speed of the briquettes. At this time, if a plurality of compression rolls are moved in the twisting direction, it is possible to increase the delivery speed of the compression rolls, but the molding chamber formed by the compression rolls moved in the twisting direction is As the center becomes smaller and the entire molding chamber becomes a slender shape, the grass, etc. is strongly compressed by the compression rolls, increasing the density of the briquettes, and in extreme cases, briquettes may be Sometimes it gets clogged. So the 12th
As shown in the figure, it has been proposed that the bearing part a of the compression roll is supported by a spring b, so that the extrusion side of the compression roll is expanded against the bias of the spring due to the reaction force of grass, etc. However, in this case, the degree of spread of the compression rolls is not necessarily constant for each compression roll due to fluctuations in the amount of grass supplied. As a result, the formed briquettes become eccentric, making it impossible to extrude briquettes with uniform density in a stable manner, causing problems such as grass protruding from small gaps in the device, making it impossible to cut smoothly with the cutter. Moreover, there was a further drawback that the entire device inevitably became large.

The present invention was devised to solve the above problems, and its purpose is to twist the compression roll in the torsional direction when the amount of grass etc. supplied to the roll forming chamber fluctuates. An object of the present invention is to provide a forming extrusion device for a roll forming machine that can always extrude briquettes of uniform density in a stable state even though the feeding speed is adjusted by moving the briquettes.

[Means for solving problems]

The technical means adopted by this invention in order to solve the above problems is that grass, etc. is supplied from one end on the inlet side to a roll forming chamber consisting of a plurality of compression rolls with both ends pivoted, and compression molded into a cylindrical shape. In a roll forming machine in which the briquettes are pushed out from the other end on the exit side by the feeding action of the compression roll, the exit side pivot portion of the compression roll is rotatable in the circumferential direction with respect to the inlet side via an elastic device. A feed-out speed adjusting device is formed to increase the torsion angle of the compression roll as the amount of grass etc. supplied increases, and the pivot metal of the compression roll is eccentrically supported on the outlet side pivot part. An eccentric metal is provided to form a roll forming chamber expansion device that moves the outlet side of the compression roll outward by rotation of the eccentric metal, and a sprocket for rotating the eccentric metal is fixed to the machine body side. It is characterized in that it meshes with the ring body and expands and contracts the roll forming chamber in conjunction with adjustment of the delivery speed of the compression roll.

[Effect of invention]

Therefore, according to the present invention, a plurality of compression rolls compress and mold the grass etc. supplied from one end on the entrance side of the roll forming chamber into a cylindrical briquette, and extrude it from the other end on the exit side by the feeding action of the compression rolls. I can do it. During this series of forming operations, when the amount of grass, etc. supplied increases, the outlet side pivot of the compression rolls rotates in the circumferential direction relative to the inlet side, twisting the multiple compression rolls at a large twist angle. Adjust the feed speed by moving it in the direction of . In conjunction with this speed adjustment, the sprocket meshed with the ring body rotates, and the eccentric metal rotates accordingly to move the outlet side of the compression roll outward, thereby enlarging the roll forming chamber. Therefore, the roll forming chamber expands and contracts in response to changes in the feed speed, so that even if the amount of grass etc. supplied varies, briquettes compressed to a uniform density can always be extruded in a stable state.

〔Example〕

Embodiments of the present invention will be described in detail with reference to the attached drawings. In FIGS. 3 and 4, 1 is a tractor, 2 is a roll forming machine towed by the tractor 1, and the roll forming machine is The front of the 2 aircraft is equipped with a pick-up 3 for raking up grass, etc. in the field. At the rear of the aircraft, there are multiple compression rolls 4, 4.
... are pivotally supported between opposing gear cases 5 on the outside of the machine body and wheels 6 provided on the tractor 1 side of the machine body, and a roll forming chamber 7 is formed by the inscribed circle of the compression rolls 4, 4.... Then, the grass etc. supplied from one end on the entrance side of the roll forming chamber 7 is formed into a cylindrical briquette by the compression action of the compression roll 4, and the briquette is provided on the wheel 6 by the feeding action of the compression roll 4 toward the other end on the exit side. It is designed to be pushed out through a guide hole 8 shown in FIG.

The wheel 6, which pivots on the exit side of the compression roll 4, has its outer circumferential surface supported by a plurality of rollers 9, 9... pivoted on the machine body, and as shown in FIG. The outlet side of the compression roll 4 is rotatable in the circumferential direction relative to the inlet side within the range where the pin 10 contacts the stopper 12, and the pin 10 is normally biased via a spring 13 to a position where the pin 10 contacts one of the stoppers 11. It is held. The wheel 6 rotates against the bias of the spring 13.
Thus, an adjustment device is formed that increases the feeding action by moving the plurality of compression rolls 4, 4, .

Reference numeral 14 denotes a bearing as a pivot metal that pivots the delivery side of the compression roll 4 to the wheel 6. As shown in FIG. The inner periphery of the bearing 14 is provided on the shaft 4a that protrudes from the compression roll 4 side to the wheel 6 side, and the metal 15 is fitted so that its center line of rotation is the bearing. By constructing an eccentric metal 15 that is eccentric by l with respect to the center line of the compression roll 4 and supporting the bearing 14 eccentrically, when the eccentric metal 15 rotates, the bearing 14 of the compression roll 4 is moved to the roll forming chamber 7. An expanding device is formed to expand the roll forming chamber 7 by moving it outward.

16 is a sprocket fixed to the rotating shaft of the eccentric metal 15, and on the outer periphery of the sprocket 16, a ring body 17 arranged concentrically with the wheel 6 is fixed to the body side via a bracket 18. The sprocket 16 meshes with pins 19 provided at the same pitch as the sprocket 16 over the entire circumference of the ring body 17.

Then, the wheel 6 rotates and the compression rolls 4, 4
The sprockets 16, 16... rotate while meshing with the pin 19, and the eccentric metal 15 moves the bearing 14 to the outside of the roll forming chamber 7. The exit side of the tube is expanded at the same time.

Reference numeral 20 denotes a briquette guide tube provided on the extrusion side of the guide hole 8, and as shown in FIGS. 5 and 6, a briquette length detection sensor 21 is attached to the tip of the guide tube 20. At the proximal end are cutters 23 and 24 operated by a one-turn clutch 22.
is provided, and when the detection sensor 21 detects a briquette that has been pushed out to a predetermined length, the cutters 23 and 24 are activated to cut the briquette, and the lower half of the guide tube 20 is opened to cut the briquette. Release briquettes.

25 is a rotatable idle ring provided on the inner surface of the guide hole 8, and a spiral protrusion 26 is formed on the inner peripheral surface of the idle ring 25, as shown in FIG. Due to the frictional resistance of the extruded briquettes, the idle ring 25 rotates and can smoothly extrude the briquettes toward the guide tube 20.

Moreover, FIGS. 8 and 9 show an example in which the idling ring is rotated by a drive mechanism to improve the extrusion action.

That is, an idle ring 28 provided with a spiral protrusion 27 is provided with engaging holes 29, 29...
A sprocket 30 that meshes with the meshing hole 29 is operatively connected to a drive shaft 32 via a chain 31. 33 is an arm that supports the sprocket 30;
A fixed arm 34 fixes the arm 33 to the body frame 35.

In the configuration as described above, when the roll forming machine 2 is towed by the tractor 1 and travels through a field, the pick-up 3 installed at the front of the machine will rake up grass and the like. Next, the grass and the like supplied to the roll forming chamber 7 are compressed into cylindrical briquettes by a plurality of compression rolls 4, 4, . . . . At this time, the wheel 6 is rotated by an appropriate amount in advance, and the compression roll 4,
If 4... is twisted, the compression roll 4,
The briquette can be smoothly pushed out from the guide hole 8 by the feeding action of 4.... and,
When the detection sensor 21 detects that the briquettes in the guide tube 20 have reached a predetermined length, the one-turn clutch 22 is operated, and the cutters 23 and 24 cut the briquettes and discharge them into the field.

During the series of briquette forming operations mentioned above, if the amount of grass etc. fluctuates and a large amount of grass etc. is supplied to the roll forming chamber 7 at once, due to the drive reaction force of the compression rolls 4, 4... against the grass etc. Since the wheel 6 rotates against the bias of the spring 13 and moves the compression rolls 4, 4... in a direction where the torsion angle increases, the feeding action of the compression rolls 4, 4... can be increased. can. Then, in conjunction with the rotation of the wheel 6, the sprocket 16 meshed with the pin 19 of the ring body 17 rotates, and at the same time, the eccentric metal 15 rotates to move the bearing 14 to the outside of the roll forming chamber 7, and the roll forming chamber 7 is rotated. Since the forming chamber 7 is expanded at the same time, even if the compression rolls 4, 4 move in the twisting direction, the grass etc. will not be tightly compressed and clogged in the roll forming chamber 7.

After that, when the amount of grass, etc. supplied decreases, the wheel 6 rotates in the opposite direction due to the bias of the spring 13 and reduces the roll forming chamber 7, so that the roll forming chamber 7 expands and contracts in response to changes in the feeding speed. As a result, briquettes formed to a constant density can be extruded in a stable manner.

Furthermore, even if the molding operation is interrupted and the briquettes remain stuck in the guide hole 8, when the molding operation is restarted, the idle ring 25 will rotate due to the extrusion action of the briquettes formed later. The briquettes do not clog the roll forming chamber 7 and can be smoothly extruded into the guide tube 20. Furthermore, in the case of the idle ring 28 which is rotationally driven, the extrusion action is further promoted and the extrusion work is reliably performed. be able to.

[Effect of idea]

In short, the present invention involves feeding grass, etc. into a roll forming chamber consisting of a plurality of compression rolls with both ends pivotally supported from one end on the inlet side, and compressing briquettes into a cylindrical shape through the feeding action of the compression rolls to the other end on the exit side. In a roll forming machine configured to extrude pasture grass, etc., the outlet side pivot portion of the compression roll is rotatably supported in the circumferential direction with respect to the inlet side via an elastic device, and as the amount of grass etc. to be supplied increases, forming a feed-out speed adjusting device for increasing the torsion angle of the compression roll, and providing an eccentric metal on the outlet side pivot portion to eccentrically support the pivot metal of the compression roll;
A roll forming chamber expanding device is formed that moves the outlet side of the compression roll outward by rotation of the eccentric metal, and a sprocket for rotating the eccentric metal is engaged with a ring body fixed to the machine body. Since the roll forming chamber is expanded or contracted in conjunction with the adjustment of the feeding speed of the compression roll, when the grass etc. supplied to the roll forming chamber is formed into briquettes, even if the amount of grass etc. supplied changes, the compression roll An adjustment device installed on the exit side of the chamber moves the multiple compression rolls in the torsional direction, and can adjust the feed speed according to the amount of grass, etc., and in conjunction with the adjustment device, the compression rolls can be moved into the roll forming chamber. Since the roll forming chamber is expanded and contracted in accordance with the feed speed, briquettes of uniform density can always be compressed and extruded in a stable state.

[Brief explanation of the drawing]

The drawings show an embodiment of the extrusion device in the roll forming machine according to the present invention.
The figure is a side view of the main parts, Figure 2 is a rear view of the same as above, Figure 3 is an overall side view, Figure 4 is a plan view of same as above, Figure 5 is a rear view showing the extrusion side, and Figure 6 is a side view of same as above. , FIG. 7 is a perspective view of the idling ring, FIG. 8 is a perspective view showing another embodiment of the idling ring, FIG. 11 is a plan view showing a conventional example, and FIG. 12 is a side view showing still another conventional example. In the figure, 4... compression roll, 6... wheel, 7
...Roll forming chamber, 13...Spring, 14...
... Pivotal metal, 15 ... Eccentric metal, 16 ... Sprocket, 17 ... Ring body.

Claims (1)

[Scope of utility model registration request] A roll forming chamber consisting of a plurality of compression rolls with both ends pivotally supported, in which grass, etc. is supplied from one end on the inlet side, and briquettes compressed into a cylindrical shape are pushed out from the other end on the exit side by the feeding action of the compression rolls. In the forming machine, the outlet side pivot part of the compression roll is rotatably supported in the circumferential direction with respect to the inlet side via an elastic device, and the torsion angle of the compression roll is adjusted as the amount of grass etc. supplied increases. An eccentric metal is provided on the outlet side pivot portion to eccentrically support the pivot metal of the compression roll, and rotation of the eccentric metal causes the feed speed to be increased at the exit side of the compression roll. At the same time, a sprocket for rotating the eccentric metal is engaged with a ring body fixed to the machine body, and the roll is expanded in conjunction with the adjustment of the feeding speed of the compression roll. A molding extrusion device for a roll forming machine characterized by expanding and contracting a molding chamber.