JPH0718063B2 - Pressing equipment for cotton dust - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressing device for cotton dust and the like.

[0002]

2. Description of the Related Art For example, there is a technique in which fine powder such as cotton dust collected by a dust filter or the like in a spinning factory is compressed and solidified into a briquette by a pressing device and then discharged. As such a pressing device, a block body having a compression hole communicating with the molding chamber and having both axially open sides inside is disposed on the axially outlet side of the molding chamber open on both axial sides. A wall body (valve body) that opens and closes the outlet of the compression hole is arranged on the outlet side of the compression hole, and the fine powder filled in this molding chamber is pushed into the compression hole and solidified on the inlet side of the molding chamber. There is one in which a piston is provided so as to be able to move back and forth in the axial direction, and conventionally, a block body having only one compression hole is fixed to one molding chamber (JP-A-3-119129).

[0003]

However, in the above-mentioned prior art, since the molding chamber and the compression hole are fixed in a one-to-one correspondence, the fine powder (briquettes) solidified in the compression hole is fixed. In order to discharge to the outside of the press device, the compression piston must be projected further forward than the compression completion position after opening the valve body, which has been a cause of increasing the cycle time of compression work.

Further, in order to allow one compression piston to perform two types of work, that is, the work of compressing the fine powder and the work of discharging the briquette thereafter, a special hydraulic control circuit or the like for operating the compression piston is used. Needs to be configured,
It has also been a cause of increasing the design and manufacturing cost of the press machine. In view of such circumstances, it is an object of the present invention to improve the cycle time of the compression work as much as possible by allowing the briquette that has already been solidified to be discharged to the outside of the device at the same time as the compression work of the compression piston. .

[0005]

[Means for Solving the Problems] In order to achieve the above object,
The present invention has taken the following technical means. That is, according to the first aspect of the invention, the molding chamber 28 is provided on the exit side in the axial direction.
A block body 37 having a compression hole 38 communicating with 28 and open on both sides in the axial direction is disposed, and a wall body 30 for closing the outlet of the compression hole 38 is disposed on the exit side of the block body 37. On the inlet side of the molding chamber 28, the fine powder 53 filled in the molding chamber 28
In a pressing device such as cotton dust in which a compression piston 34 for extruding and solidifying into the compression hole 38 is provided so as to be capable of retracting in the axial direction, in the block body 37, the plurality of compression holes 38 are separated in the radial direction. And a switching means 40 for communicating any one of the compression holes 38 with the molding chamber 28.
Reference numeral 30 denotes a compression hole 38 other than the compression hole 38 communicating with the molding chamber 28.
A discharge hole 45 communicating with the discharge hole 45 is provided on the side of the compression piston 34 in synchronization with the extrusion of the compression piston 34.
A discharge piston 48 for transferring the solidified fine powder 54 in the compression hole 38 communicating with the discharge hole 45 side is provided.

According to the second aspect of the present invention, the molding chambers 28 are arranged at equal intervals along a straight line direction orthogonal to the axial direction, and the number of compression holes 38 twice that of the molding chambers 28 are the same. Arranged side by side at intervals of half of the molding chambers 28 along the linear direction, the compression pistons 34 corresponding to the molding chambers 28 are connected so as to be synchronously extrudable, and the block body 37 and the block body 37 are linearly connected. It is characterized in that a switching means 40 is provided for reciprocating along the direction by the distance between the compression holes 38.

Further, the invention according to claim 3 is a block body.
37 is rotatably attached to a pivot 55 that is parallel to the axial direction of the molding chamber 28 and is eccentric from the molding chamber 28, and a compression hole 38 is formed in the block body 37 in the circumferential direction around the pivot 55. The block bodies 37 are provided at regular intervals and the compression holes 38
It is characterized in that a switching means 40 for intermittently rotating in a constant direction by an interval therebetween is provided.

[0008]

For example, as shown in FIG. 7, the discharge piston 48 provided on the side of the compression piston 34 discharges the briquette 54 formed in the previous compression process in synchronization with the compression process of the fine powder 53 by the compression piston 34. Transfer to the hole 45 side. In the invention according to claim 2, the molding chambers 28 are arranged at equal intervals along a straight line direction orthogonal to the axial direction, and the plurality of molding chambers are arranged.
When the fine powder 53 in 28 is synchronously compressed by the compression piston 34,
The discharge piston 48 transfers the same number of briquettes 54 as the forming chambers 28 formed in the previous compression step to the discharge hole 45 side at once in synchronization with the compression step.

According to the third aspect of the present invention, the block body 37 is intermittently rotated in the fixed direction by the distance between the compression holes 38, and the briquette 54 in the compression hole 38 which is communicated with the discharge hole 45 by the intermittent rotation. The discharge piston 48 that is pushed out in synchronization with the compression piston 34 is transferred to the discharge hole 45 side.

[0010]

Embodiments of the present invention will be described in detail below with reference to the drawings. 1 to 8 show a first embodiment of the present invention. In the figure, reference numeral 1 denotes a pressing device for cotton dust or the like according to the present embodiment. The pressing device 1 includes a material feeding device 2 for receiving fine powder such as cotton dust and conveying it to one side, and a material feeding device 2. A first compression device 3 for compressing the fine powder supplied from the device 2 downward, and a second compression device 4 for further compressing the fine powder primary-compressed by the first compression device 3 in the horizontal direction to solidify it. Each is equipped on the base 5.

As shown in FIG. 3, the material supply device 2 includes a hopper 7 supported in an upward opening shape by a pedestal 6 standing on a base 5, and a screw feeder 8 rotatably provided inside the hopper 7. This screw feeder 8 is cantilevered via a bearing 9 fixed to the outer surface of the hopper 7. A driven pulley 11 is fixed to the base end of a spindle 10 of the screw feeder 8, and a transmission belt 14 is provided between the driven pulley 11 and a drive pulley 13 of an electric motor 12 fixed below the bearing 9. It is wrapped around.

The first compression device 3 is provided with a slide cylinder 15 having a rectangular cross section, which is erected on the base 5, and a compression slider 16 which is vertically movably installed in the slide cylinder 15. An elevating cylinder 17 for vertically moving the compression slide 16 is provided upright on the upper end of the slide cylinder 15. A supply port 18 for fine powder is opened in the middle of the side of the slide cylinder 15, and a discharge port 19 of the hopper 7 is connected to the supply port 18, and the inner periphery of the supply port 18 is A cutter ring 20 for shearing and separating the fine powder is provided around.

Reference numeral 21 denotes a molding table fixed on the base 5. On the upper surface of the molding table 21, a lower molding groove 22 having a semi-cylindrical shape whose axial direction is oriented in the longitudinal direction of the cross section of the slide cylinder 15 is directed upward. It is formed in an opening shape. The slide cylinder 15 is erected on the base 5 by fitting the lower end opening of the slide cylinder 15 into the forming base 21. The compression slider 16 is provided with an intermediate cylindrical body 23 having an outer peripheral cross-section that is substantially the same shape as the inner hollow cross section of the slide cylindrical body 15 and having a length capable of closing the supply port 18, and at the upper end of this intermediate cylindrical body 23. A connecting body 25 to which the moving rod 24 of the lifting cylinder 10 is connected is fitted, and a molded body 26 corresponding to the molding table 21 is fitted to the lower end.

On the lower surface of the molded body 26, a semi-cylindrical upper molding groove 27 that faces the same direction as the lower molding groove 22 is formed in a downward opening shape. Therefore, when the compression slider 16 descends and the molded body 26 at its lower end is joined to the molding table 21, the upper and lower molding grooves 27, 22 are united to form a cylindrical molding chamber 28. . Further, sharp blade portions are formed on both sides of the lower end of the molded body 26, and the fine powder continuously supplied from the supply port 18 into the slide cylindrical body 15 by the screw feeder 8 is lowered when the compression slider 16 descends. The blade portion is cut by sliding contact with the cutter ring 20.

As shown in FIG. 4, a glass visual window 29 is provided in the lower part of the slide cylinder 15 for checking the molding state of fine powder and cleaning the inside of the slide cylinder 15. It can be done through the viewing window 29. The second compression device 4
As shown in FIGS. 1, 2, 5 and 6, a press frame 33 configured by connecting front and rear wall bodies 30 and 31 fixed to each other on a base 5 with four connecting rods 32, and this press frame 33. A compression piston 34 that further compresses and solidifies the fine powder in the molding chamber 28 that is disposed inside 33, and a main cylinder 35 that supports the compression piston 34 in a forward and backward direction of the press frame 33 so as to be retractable. There is.

As shown in FIG. 6, in the molding table 21 of the first compression device 3, the compression piston 34 is formed such that the axial center direction of the lower molding groove 22 thereof coincides with the front-back direction of the press frame 33.
A guide bracket 36, which is arranged in front of the molding table 21 and slidably supports a front portion of the compression piston 34 and a piston rod 50, which will be described later, is provided behind the molding table 21.

The compression piston 34 has an outer diameter substantially the same as the inner diameter of the molding chamber 28, and is slightly engaged with the rear end side of the lower molding groove 22 when the compression piston 34 retreats last. As a result, the compression-side inlet side of the molding chamber 28 is closed by the compression piston 34. 37 is a block body,
Between the molding table 21 (molding chamber 28) and the front wall 30 in the compression direction (molding chamber
It is interposed so that it can slide in a direction perpendicular to the (28 axial direction). This block body 37 is provided with a pair of left and right compression holes 38, which are in the shape of a cylinder having the same diameter as the molding chamber 21 and whose axial center sides are open, spaced apart in the radial direction, and fixed to the rear side surface of the front wall body 30. It is installed inside a U-shaped slide guide 39.

Reference numeral 40 denotes a switching means, which selectively slides the block body 37 by the distance between the compression holes 38 so that either one of the compression holes 38 communicates with the molding chamber 28 coaxially. It is what makes me. That is, this switching means 40 is the base 5
A switching cylinder 42 arranged laterally via a bracket 41 standing upright from the
43 is connected to one end of the block body 37 in the sliding direction via a rectangular escape frame 44.

Reference numeral 45 denotes a pair of left and right discharge holes provided in the front wall body 30. The discharge hole 30 is formed to have the same diameter as the compression hole 38, and the switching cylinder 42 is operated to operate the block. When the body 37 is switched to either one, it is provided at a position coaxially communicating with the compression holes 38 other than the compression hole 38 communicating with the molding chamber 28. That is, as shown in FIG. 7, the discharge hole 45 on the right side (lower side in the figure) communicates with the compression hole 38 on the right side when the block body 37 is set on the right side, and as shown in FIG. The discharge hole 45 (upper side in the drawing) communicates with the left compression hole 38 when the block body 37 is set on the left side. In this case, the outlet of the compression hole 38 communicating with the molding chamber 28 is closed by the front wall body 30.

As shown in FIG. 5, the slide guide 39 has a central hole 46 corresponding to the molding chamber 28 and a front wall 30.
A pair of left and right guide holes 47 corresponding to the discharge holes 45 are provided side by side in a line. Reference numeral 48 denotes a discharge piston for transferring the solidified fine powder (briquettes) from the compression hole 38 to the discharge hole 45 in synchronization with the extrusion of the compression piston 34. It is installed on both sides.

That is, a mounting bracket 49 is provided at the rear end of the compression piston 34 so as to project to the left and right in the radial direction. Piston rods 50 are provided at both ends of the mounting bracket 49.
The bolt 51 is fastened. The front portion of the piston rod 50 is supported by the guide bracket 36 via the bush 52 in parallel with the compression piston 34, and the discharge piston 48 is fixed to the front end portion of the piston rod 50.

The position of the discharge piston 48 in the left-right direction is
The discharge piston 45 is positioned coaxially with the discharge hole 45 and the guide hole 47, and the position of the discharge piston 48 in the front-rear direction is equal to or more than the axial length of the compression hole 38.
It is supposed to be located forward of the tip of 34 in the compression direction. Next, the operation of the press device 1 having the above configuration will be described.

First, fine powder made of cotton dust or the like collected in a spinning factory or the like is put into the hopper 7 and conveyed by the screw feeder 8 into the slide cylinder 15 of the first compression device 3. After that, when the elevating cylinder 17 is operated to lower the compression slider 16, the fine powder is primarily compressed between the compact 26 of the compression slider 16 and the compacting table 21 below the compact 26, and
As shown in (a), the molding chamber 28 is filled with the fine powder 53.

Next, when the main cylinder 35 is actuated and the compression piston 34 is projected, the compression piston 34 is moved to the molding chamber.
The fine powder 53 in 28 is secondarily compressed, for example, in the compression hole 38 on the left side, whereby the fine powder 53 is solidified. At this time, the fine powder (briquettes 54) already solidified in the previous compression step is filled in the compression hole 38 on the right side of the block body 37. As shown in FIG. During the current compression process, the discharge piston 48 on the right side, which projects in synchronization with the compression piston 34, transfers the discharge piston 45 to the discharge hole 45 on the right side.

Then, as shown in FIG. 8A, after the compression piston 34 and the discharge piston 48 are retracted, the switching cylinder
At 42, the block body 37 is set on the left side, and the newly filled fine powder 53 is solidified in the compression hole 38 on the right side at the same time, and is shifted to the left side together with the block body 37 as shown in FIG. 8B. The briquette 54 is transferred to the discharge hole 45 on the left side by the discharge piston 48 on the left side.

Thereafter, the compression piston 34 and the discharge piston 48
Back and reset the block body 37 to the right,
The compression and discharge steps described above are sequentially repeated. As described above, according to the press device 1 of the present embodiment, the discharge piston 48 provided on the side of the compression piston 34 is
Since the briquette 54 formed last time is sequentially transferred to the discharge hole 38 side in synchronism with the compression process of 34, there is no need to push the compression piston 34 further forward than the compression completion position as in the conventional case, and the cycle of the compression work. The time can be shortened significantly.

Further, since the compression piston 34 need only perform the compression work, the hydraulic control circuit of the main cylinder 35 can be simple and the designing and manufacturing cost of the press machine 1 can be reduced. FIG. 9 shows a second embodiment of the present invention.
This embodiment is different from the first embodiment in that the molding chambers 28 are arranged side by side in two rows, and two fine powders 53 are simultaneously compressed at a time in one compression step, and the two previously compressed It is that the briquette 54 can be ejected at the same time,
Other configurations are substantially the same as those in the first embodiment.

That is, in this embodiment, the two molding chambers 28, 28 are connected.
The compression pistons 34, 34 corresponding to are respectively connected so that they can be synchronously extruded, and the left and right sides of the compression pistons 34, 34 are
The discharge pistons 48,48,48 are mounted alternately. The block body 37 has twice the number of molding chambers 28, that is, four compression holes.
38 are arranged side by side in the left-right direction, and the space between the compression holes 38 is set to be half the space between the molding chambers 28. Also,
The front wall 30 is provided with three discharge holes 45 lined up in the left-right direction, and these discharge holes 45 are displaced from the molding chamber 28 in the left-right direction by half the distance between the molding chambers 28. The slide guide 39 is provided with three guide holes 47 respectively corresponding to the discharge holes 45. The block body 37
The second embodiment is similar to the first embodiment in that the switching means 40 selectively slides by the distance between the compression holes 38.

Although not shown in the drawing, two molding chambers are also provided.
28, 28 are constructed by arranging the first compression devices 3 side by side on the base 5, and each of the first compression devices 3
The material supply devices 2 are connected to each other separately. According to this embodiment, the compression of the two fine powders 53 and the discharge of the two briquettes 54 can be performed at the same time in one compression process, so that the cycle time of the compression work can be further shortened.

It should be noted that the molding chamber 28 may be provided with three or more stations. In this case, the molding chambers 28 are arranged at equal intervals along the left-right direction, and the compression chamber is compressed by twice the number. Hole 38
Are arranged side by side at a half interval of the molding chamber 28 along the left-right direction, and the discharge holes 45, by one more than the molding chamber 28, may be provided at the same intervals and positions as the above. .

10 and 11 show a third embodiment of the present invention. In this embodiment, the block body 37 has a disk shape, and at regular intervals in the circumferential direction within the block body 37,
Six compression holes 38 are provided. 55 is the axis, molding room
It is attached so as to penetrate through the front wall body 30 in the front-rear direction at a position eccentric to a position higher than 28, and the block body 37 is rotatably attached to the front wall body 30 via the pivot 55.

The switching means 40 according to the present embodiment includes the pivot 55
The sprocket 56 fixed to the front end of the sprocket and an intermittent drive motor (not shown) interlockingly connected to the sprocket 56 via a chain 57, and the intermittent drive motor keeps the block body 37 constant by the distance of the compression holes 38. It can rotate intermittently in any direction. Further, only one discharge hole 45 of the front wall body 30 is provided at a position displaced from the molding chamber 28 by one intermittent rotation of the block body 37, and only one discharge piston 48 corresponding thereto is attached. Has been.

Reference numeral 58 denotes a protective cover for covering the block body 37, which is bolted to the rear side surface of the front wall body 30 and has one guide hole 47 corresponding to the discharge hole 45 of the front wall body 30. The upper portion of the protective cover 58 is opened so that a part of the block body 37 is exposed to the outside through this opening portion, whereby the compression hole 38 can be easily cleaned. it can.

The switching means 40 according to this embodiment may employ various power transmission mechanisms such as other winding mechanism or gear mechanism. In this embodiment having the above-described structure, as shown in FIG. 11, the briquette 54 in the compression hole 38 solidified by the compression piston 34 is aligned coaxially with the discharge hole 45 by the intermittent rotation of the block body 37. Then, it is transferred to the discharge hole 45 side by the discharge piston 48 in the next compression process.

[0035]

According to the present invention, the discharge piston 48 synchronizes with the compression process of the fine powder 53 by the compression piston 34 and discharges the fine powder (briquettes 54) solidified in the previous compression process to the discharge hole 45.
Since it is transferred to the side, the compression piston 34 need only perform the compression work of the fine powder 53, and the cycle time of the compression work can be significantly shortened, and the design and manufacturing cost of the press device 1 can be reduced.

According to the second aspect of the invention, a plurality of fine powders 53 are compressed in one compression step and the same number of briquettes are compressed.
Since 54 can be discharged, the cycle time of the compression work can be further shortened. According to the third aspect of the invention, since the compression hole 38 having the briquette 54 therein is communicated with the discharge hole 45 by the block body 37 which intermittently rotates in a fixed direction, the discharge piston 48 and the discharge hole 45 are blocked. It is sufficient to dispose the body 37 on one side in the rotation direction, and the manufacturing cost of the press device 1 can be further reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a pressing device for cotton dust and the like according to a first embodiment.

FIG. 2 is a side view of the same.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

5 is a cross-sectional view taken along line CC of FIG.

6 is a cross-sectional view taken along the line DD of FIG.

FIG. 7 is an explanatory view of the operation of the compression and discharge process.

FIG. 8 is an explanatory view of the same operation.

FIG. 9 is a plan cross-sectional view of a main part of a pressing device for cotton dust and the like according to a second embodiment.

FIG. 10 is a longitudinal cross-sectional view of the main parts of a pressing device for cotton dust and the like according to a third embodiment.

11 is a cross-sectional view taken along the line EE of FIG.

[Explanation of symbols]

 1 Pressing Device 2 Material Supplying Device 3 First Compressing Device 4 Second Compressing Device 28 Molding Chamber 30 Front Wall Body 34 Compression Piston 37 Block Body 38 Compression Hole 40 Switching Means 45 Discharge Hole 48 Discharge Piston 53 Fine Powder 54 Briquette

Claims (3)

[Claims] 1. The molding chamber (28) is provided on the exit side in the axial direction of the molding chamber (28).
Compressed hole (38) communicating with (28) and open on both axial sides
The block body (37) having the inside is arranged, and the block body (37)
The wall (30) for closing the outlet of the compression hole (38) is disposed on the outlet side of the fine powder (53) filled in the molding chamber (28) on the inlet side of the molding chamber (28). ) Is compressed into the compression hole (38) and solidified, and a compression piston (34) for solidifying the compression piston (34) is provided in the axial direction so that the block body (37) has a plurality of compression holes. (38) are provided separately in the radial direction, a switching means (40) for communicating any of the compression holes (38) with the molding chamber (28) is provided, and the wall body (30) is provided with the A discharge hole (45) communicating with the compression hole (38) other than the compression hole (38) communicating with the molding chamber (28) is provided, and the compression piston (34) is extruded to the side of the compression piston (34). A discharge piston (48) for transferring the solidified fine powder (54) in the compression hole (38) communicating with the discharge hole (45) to the discharge hole (45) side is provided. Characteristic press device for cotton dust, etc. 2. The molding chambers (28) are arranged at equal intervals along a straight line direction orthogonal to the axial direction, and twice as many compression holes (38) as the molding chambers (28) are formed in the straight line direction. Along the molding chamber (2
8) Arranged side by side at half the spacing, each molding chamber (28)
And a compression piston (34) corresponding to the above are synchronously extrudablely coupled to each other, and the block body (37) is reciprocated along the linear direction by the distance between the compression holes (38). The pressing device for cotton dust according to claim 1, further comprising a switching means (40). 3. A pivot shaft (5) provided with a block body (37) parallel to the axial direction of the molding chamber (28) and eccentric from the molding chamber (28).
5) Pivotally attached to the block body (37),
The switching means (40) for providing the (38) at constant intervals in the circumferential direction around the pivot axis (55) and for intermittently rotating the block body (37) in the constant direction by the interval between the compression holes (38). The pressing device for cotton dust according to claim 1, wherein the pressing device is provided.