JPH0230061Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a small rotary pellet sorting machine.
It is especially devised so that it can be carried freely, for example by placing and using the sorted product storage box as a table board, and the pellets after sorting can be discharged into the storage box.

<Prior Art> The present applicant has already proposed a rotary sorting machine for synthetic resin pellets, such as Utility Model No. 55-4067 and Utility Model Publication No. 55-26070, and has achieved considerable results through its implementation.

However, as a result of continued intensive research,
In the case of the above-mentioned known device, it has been found that the following problems still need to be improved mainly due to changes in the method of use.

<Problems to be solved by the invention> In other words, taking the above-mentioned Utility Model Publication No. 55-26070 as an example, this is a so-called stand type that is installed directly on the work floor, and is installed on its tall support legs 15 and 34. In addition to the hopper 1, a pellet transport cylinder 2, a dust removal cylinder 3, and a sorting cylinder 10 are installed.
The overall size and weight of the pellets are significantly increased, and the pellets are placed in a narrow space below, such as those directly connected to a crusher for synthetic resin molded products, and the pellets after crushing the molded products are directly introduced into the hopper of the sorting machine. I can't find a way. Furthermore, it is not possible to easily carry the sorted product storage box, for example, use it as a table board, place the sorting machine on top of it, and discharge the sorted pellets into the storage box.

Furthermore, as for the chute structure for discharging the pellets after sorting, the chute 13a with the discharge port 14 for good pellets, the chute 32 for defective pellets and the cover 27 with the discharge port 27a are connected to the support legs 15, 34. Separately and independently, the sorting tube 10
It has to be attached and installed at a corresponding location around the dust removal cylinder 3, and its structure is extremely complicated, leading to high costs, and there is also the problem that cleaning work cannot be carried out with high efficiency.

<Means for Solving the Problems> The purpose of this invention is to solve these problems, and for that purpose, we have developed a main body frame that is integrated into a flat frame that can be placed on a tabletop, and the main body. A pellet sorting drum is supported rotatably around a horizontal cylinder core line on a frame, a hopper is fixedly installed on the main body frame to feed pellets into the drum, and a cross section that encloses the drum is almost inverted. It is U-shaped and includes a cover case with a portable handle that is integrally erected from the main body frame, and the pellets are to be sorted and discharged into standard and non-standard products on the cylindrical surface of the drum. Two types of holes with different opening diameters are provided, and a pellet drop port corresponding to the discharge hole for the standard product and a pellet drop port corresponding to the discharge hole for the non-standard product are provided in the main body. The main feature is that by forming a partition in the main body frame itself using reinforcing ribs on the frame, the pellets are automatically discharged from the through hole of the sorting drum through the drop opening of the main body frame. It is something to do.

<Embodiment> Hereinafter, the specific structure of the present invention will be described in detail based on the illustrated embodiment. In Figs. The frame is made of channel-shaped materials such as stainless steel and is integrated into a flat plate with an overall rectangular outline when viewed from above. 11 crosses the main body frame 10 along the width direction,
This is an intermediate partition wall that is fixedly installed in a vertical state, and the rear half of the main body frame 10 divided by this is set as a falling port S1 for undersized pellets and dust.

S2 is a standard pellet drop opening also opened in the front half of the main body frame 10, and is defined by a funnel-shaped chute wall 12 that traverses the main body frame 10 in a fixed state. Of course, it is also possible to define the chute walls 12 vertically as a pair facing each other instead of the funnel shape.

Further, an oversized pellet dropping port S3 is provided at the front end of the main body frame 10, so that the oversized pellets fall along a front downwardly inclined wall 13 which also crosses the main body frame 10. Due to its structure, the main body frame 10 has both the function of a base for placing the sorting machine on a tabletop, etc., and the function of guiding pellets and dust to fall.
The intermediate partition wall 11, the chute wall 12, and the inclined wall 13 all also serve as reinforcing ribs for the main body frame 10 itself.

Reference numeral 14 is located in the rear half facing the falling port S1 for small pellets and dust, and the main body frame 10
This is a rotary drive roller for the pellet sorting drum that is disposed biased to either the left or right side of the drum, and the illustrated example shows a special structure with a built-in motor. Its structure is extracted from Fig. 6, and the motor output shaft 15
and the end of the mounting shaft 16 are respectively connected to the rotation stopper 1.
7, the intermediate partition wall 11 in the main body frame 10 and the rear wall 1 parallel to the partition wall 11.
8, and the outer cylinder 19 rotates around the fixed output shaft 15.

That is, the rotational force of the rotor 20 forming the motor is transferred from the shock absorption device 21 to the first sun gear 22.
First planetary gear 23 Second sun gear 24, 24
The second planetary gears 25 and 25 are sequentially transmitted to the internal gear 26, and the outer cylinder 19, which is connected and integrated with the internal gear 26, is configured to rotate, and its rotational speed is It is approximately 70 rpm. The outer cylinder 19 has a hollow cylindrical shape, and rubber linings 27 are integrally baked on both front and rear ends of the outer cylinder 19 to increase the frictional force of contact with the pellet sorting drum D. 28 is a stator that pairs with the rotor 20, 29 is a current-carrying lead wire led out from the fixed output shaft 15, 30 is a compression coil spring that allows the mounting shaft 16 to move forward and backward, and 31 is a large number of bearings.

Reference numeral 32 designates a pair of front and rear driven rollers which are biased toward the remaining one side of the main body frame 10 and are respectively pivotally supported by the intermediate partition wall 11 and the rear wall 18, forming a left and right pair with the drive roller 14; Both rotate freely around the fixed support shaft 33 via a bearing 34. 35 is a fixing nut screwed onto the support shaft 33, and 36 is the driven roller 3.
This is a rubber lining baked on the outer peripheral surface of the drum 2, which also increases the frictional force of contact with the sorting drum D.

The drive roller 14 and both driven rollers 32 stably support the outer peripheral surface of a pellet sorting drum D, which will be described later, from below, and in this state it is rotated by the drive roller 14. In other words, at least one of the plurality of rollers 14 and 32 (total three in the illustrated example) that contact and support the outer circumferential surface of the sorting drum D is driven by a motor without using any transmission means such as a chain or belt. The sorting drum D is driven to rotate at a speed of about 18 rpm by the contact friction force between the rubber lining 27 of the drive roller 14 and the outer peripheral surface of the sorting drum D. In other words, it is becoming more and more common.

Reference numeral 37 denotes a cover case erected on the main body frame 10, and has an approximately inverted U-shaped cross section, and its lower opening edge is fixedly installed on the upper surface of the main body frame 10 via an angle-shaped member. ing. Reference numeral 38 denotes a carrying handle that integrally extends from the center of the upper surface of the cover case 37, 39 indicates a hopper outlet provided at the center of the rear wall of the cover case 37, and 40 indicates a handle extending from the front and back inside the cover case 37. This is an intermediate partition plate that divides the pellet into two, and prevents dust from scattering from the rear to the front and mixing with the standard pellet product.

Further, 41 is a frame for attaching a hopper which is fixedly installed at the center of the rear wall of the cover case 37 so as to stand up from the rear end of the main body frame 10.
The frame is integrated into an almost square outline when viewed from the front from an angle-shaped member. 42 is a hopper for feeding pellets, 43 is a mounting seat plate welded in advance to the front downwardly inclined cylinder part of the hopper 42, which is connected to the underframe 41 in a closed state from the rear, and The hopper 42 is stably mounted and supported on the main body frame 10 by fixing it to the angle-shaped member of the underframe 41 with a plurality of bolts 44.

The pellet sorting drum D that I mentioned earlier consists of a primary sorting drum D1 and a secondary sorting drum D that rotate integrally with each other around the horizontal cylinder core line XX.
First, the primary sorting drum D1 has a roughly truss-shaped cross section, and its cylindrical surface has an inclined slope surface that gradually widens as it goes toward the end (front) in the pellet conveying direction. It has been finished.
Reference numeral 45 denotes the rear flange of the primary sorting drum D1, and as is clear from FIGS. 9 to 11, the circular outer peripheral surface thereof has a pair of front and rear receiving step surfaces a for the cylinder and contact step surfaces b for the rollers. It's cut out. Reference numeral 46 designates a hopper inlet opened at the center of the rear flange 45, and reference numeral 47 designates a plurality of connecting rod receiving holes formed in a radially symmetrical manner around the periphery.

On the other hand, 48 is a nearly symmetrical front flange facing the rear flange 45, and its circular outer peripheral surface is also provided with a pair of front and rear contact stepped surfaces c for the roller and receiving stepped surfaces d for the barrel cylinder. There is. Reference numeral 49 denotes a communication port opened at the center of the front flange 48, which communicates with the secondary sorting drum D2. 5
Reference numeral 0 designates a plurality of screw holes for receiving connecting rods which are penetrated at positions around the communication port 49, and correspond correctly to the above-mentioned blank holes 47.

Then, the front end portions of the plurality of connecting rods 51 are screwed into the screw holes 50 of the front flange 48, and the rear end portions of the plurality of connecting rods 51 are also passed through the hole 47 of the rear flange 45, and a nut 52 is screwed into the rear end portion. By being fastened together, the flanges 45 and 48 are removably assembled, and the distance between the front and back (the length of the primary sorting drum) is regulated by the connecting rod 51. . Reference numeral 53 denotes a cylinder that defines the cylindrical surface of the primary sorting drum D1, and although the example shown in the figure shows a configuration in which it is wrapped with a wire mesh material, there are a number of cylinders from which dust and undersized pellets are to be discharged. Hole 5
4, for example, punched metal previously prepared as a cylindrical body or other surrounding material may be employed. In the case of the illustrated example, the barrel cylinder 53 is the receiving step surface a of both flanges 45, 48,
d from the outside so as to cover the connecting rod 51, and is tightened and integrated with a fixing band 55 so that it can be disassembled and cleaned.

Reference numeral 56 designates a plurality of hammers suspended from the connecting rod 51 in a so-called pendulum type, and serve to strike the cylindrical surface of the primary sorting drum D1, thereby preventing the clogging of the through hole 54. Prevent. That is, as suggested from FIGS. 10 and 11, the hammers 56 revolve together with the rotational movement of the primary sorting drum D1, and also rotate independently of each other. Next sorting drum D1
The barrel cylinder 53 is instantaneously and repeatedly hit hard from the inside. However, if there is no need to remove dust and the primary sorting drum D1 only needs to select and discharge undersized pellets, the installation of the hammer 56 may be omitted.

The secondary sorting drum D2 is made of a cylindrical body made of punched metal, and its cylindrical surface is also given an inclination gradient that gradually widens toward the terminal end (front) in the pellet transport direction. . Moreover,
The cylindrical surface has the above-mentioned through hole 5 of the primary sorting drum D1.
A large number of through holes 57 having an opening diameter larger than 4 are opened. 58 is a joining flange integrally extending from the rear end of the secondary sorting drum D2, and is connected to the front flange 4 of the primary sorting drum D1.
8 and is fixedly connected to the primary sorting drum D1 by a plurality of bolts 59 screwed into threaded holes 50 of the front flange 48 so as to rotate integrally with the primary sorting drum D1. It is also possible to disassemble it by removing the bolt 59.

Reference numeral 60 denotes a pair of rotary bucket blades facing the boundary between the primary sorting drum D1 and the secondary sorting drum D2, which are substantially in the form of a rain gutter or scoop, and whose protruding base end is the third. 7 As shown in Figure 1
It is fixed to the front flange 48 of the next sorting drum D1 via bolts 61, support stays 62, etc. so that it can rotate together. The pellets in the primary sorting drum D1 are scooped out by a rotating bucket blade 60 and can be automatically transferred into the secondary sorting drum D2.

As is clear from the diagram, the outer peripheral surfaces of the front flange 48 and the rear flange 45 of the primary sorting drum D1 are supported from below by the front and rear pair of driven rollers 32 and the drive roller 14, so that the drive roller 14, the primary sorting drum D1 and the secondary sorting drum D2 are driven to rotate through the contact friction force between the rubber lining 27 and the outer peripheral surfaces of the flanges 44, 48. In that case, as is clear from FIG. 5, both driven rollers 32 are maintained in a correct contact state so as to engage with the contact step surfaces b and c of both flanges 45 and 48, so that the sorting drum D There is no risk of the device slipping in the front-back direction and becoming misaligned.

In any case, both the cylindrical surfaces of the primary sorting drum D1 and the secondary sorting drum D2 are provided with an inclination gradient that gradually widens toward the front as described above. Since through holes 54 and 57 with different opening diameters are also formed on the cylindrical surface,
When the pellet sorting drum D is driven to rotate as a whole, the pellets fed from the hopper 42 are automatically conveyed forward in sequence based on the difference in circumferential speed of the sorting drum D, as shown in FIGS. 12 and 13. During this process, the dust adhering to the surface of the pellets and the undersized pellets are first transferred from the through hole 54 of the primary sorting drum D1 to the drop opening S1 of the main body frame 10 directly below the through hole 54. The remaining standard pellets and oversized pellets are then automatically sorted in the secondary sorting drum D2. The standardized products are discharged from a through hole 57 opened in the cylindrical surface of the secondary sorting drum D2, through the standardized product drop port S2 of the main body frame 10,
The remaining oversized products fall from the open front end of the secondary sorting drum D2 through the forward downwardly inclined wall 13.

Therefore, the main body frame 10 of the sorting machine is placed between the sorted product storage box B1 that receives the falling dust and pellets that are too small, and the storage boxes B2 and B3 that separately receive standard and oversized pellets. By placing the sorter from above, the sorter can be used as a so-called tabletop type. Further, the sorting machine can be directly connected to a crusher for synthetic resin molded products by installing it at a position near the bottom thereof, and the hopper 42 of the sorting machine can be easily communicated with the drop opening of the crusher. In the illustrated example, the outer circumferential surface of the primary sorting drum D1 is frictionally rotated by the drive roller 14, but as long as the above-mentioned sorting action can be achieved, the outer circumferential surface of the secondary sorting drum D2 can be rotated in a similar manner as shown in FIG. The drive roller 14 may be arranged to rotate the drive roller 14 by friction.

In addition, instead of the drive roller 14 with a built-in special motor, various small motors 63 such as a geared motor, DD motor, stepping motor, etc. are connected to the main body frame 10 as shown in FIG.
is installed and fixed, and a drive roller 14 is fixed on the rotary output shaft 64 so as to be able to rotate together with the drive roller 14, and the sorting drum D is It can also be configured to rotate. This is also because the sorting drum D can be directly rotated by the drive roller 14 without requiring a transmission means such as a chain or a belt. Needless to say, the number of driving rollers 14 and driven rollers 32 can be freely increased or decreased as long as they can support the sorting drum D stably as a whole.

<Effects of the invention> As described above, the small rotary pellet sorting machine according to the invention includes a main body frame 10 that is integrated into a flat plate-shaped frame large enough to be placed on a tabletop, and a main body frame 10 that has an integrated frame. Horizontal cylinder core line X-X
A pellet sorting drum D is rotatably supported, and a hopper 42 is fixedly installed on the main body frame 10 to feed pellets into the drum D.
and a cover case 37 with a portable handle 38 that is integrally erected from the main body frame 10 and has a substantially inverted U-shaped cross section and also covers the drum D. Two types of through holes 54 and 57 with different opening diameters are provided to separate and discharge standard products and non-standard products, and a pellet drop port S2 corresponding to the discharge hole 57 for the standard products is provided. and a pellet drop port S1 corresponding to the discharge hole 54 for non-standard products are provided in the main body frame 10 itself in the form of a partition wall formed by the reinforcing ribs 11 and 12 of the main body frame 10. The through holes 54 and 57 of the sorting drum D
Since the liquid is discharged through the drop ports S1 and S2 of the main body frame 10, it is possible to overcome all the problems of the prior art described at the beginning.

In other words, in the case of the present invention, the body frame 1 of the sorting machine
The sorting drum D is integrated into a frame in the form of a flat plate of a size that can be placed on a table top, and the sorting drum D is
Since pellet drop ports S1 and S2 corresponding to the two types of pellet discharge holes 54 and 57 are defined, it is necessary to install a chute structure that is separate and independent from the main body frame 10 attached to the sorting drum D. By making the main body frame 10 a so-called monocot structure, the overall size and weight of the sorting machine can be significantly reduced.

In addition, since a cover case 37 with a portable handle 38 is integrally erected from the main body frame 10, combined with the overall flat shape of the main body frame 10, the sorting machine For example, sorted product storage boxes B1, B2, B
3, it can be conveniently used as a so-called tabletop type. The sorting machine as a whole is small, and the sorting drum D is covered by a cover case 37, and the hopper 42 is fixedly exposed from the case 37, so it can be used as a crusher for synthetic resin molded products, for example. As in the case of direct connection, it is also possible to place the sorter in a narrow dead space below it, communicate the hopper 42 of the sorter with the pellet drop opening of the crusher, and introduce the pellets directly into the sorting drum D. It is.

[Brief explanation of drawings]

Figure 1 is an overall side view of the pellet sorting machine according to the present invention, Figures 2 and 3 are front and bottom views, and Figures 4 and 5 are taken along lines 4-4 and 5-5 in Figure 2. Each sectional view, FIG. 6 is a partially cutaway plan view showing an enlarged view of the mounting state of the driving roller and driven roller, and FIGS. 9 is a partially cutaway side sectional view showing the disassembled state of the sorting drum, FIG. 10 is a side sectional view showing the assembled state of the primary sorting drum, and FIG. 11 is 11 of FIG. -11 line sectional view, Figure 12 is a side sectional view showing how the pellet sorter is used, Figure 13 is a 13-13 line sectional view of Figure 12, and Figure 14 is the 5th
It is a cross-sectional schematic diagram which shows the modification corresponding to a figure. 10...Main frame, 11...Intermediate partition wall,
12... Chute wall, 13... Inclined wall, 14...
Drive roller, 32... Driven roller, 37...
Cover case, 38...handle, 42...hopper, 54, 57...through hole, S1, S2, S3...
...Drop port, D...Sorting drum, D1...Primary sorting drum, D2...Secondary sorting drum, B1, B2,
B3... Sorted product storage box.

Claims (1)

[Claims for Utility Model Registration] A main body frame 10 that is integrated into a flat plate shape that can be placed on a tabletop, and a horizontal cylindrical core line X-X on the main body frame 10.
A pellet sorting drum D is rotatably supported, and a hopper 42 is fixedly installed on the main body frame 10 to feed pellets into the drum D.
and a cover case 37 with a portable handle 38, which is integrally erected from the main body frame 10 and has a substantially inverted U-shaped cross section and also covers the drum D. Two types of through holes 54 and 57 with different opening diameters are provided to separate and discharge standard products and non-standard products, and a pellet drop port S2 corresponding to the discharge hole 57 for the standard products is provided. and a pellet drop port S1 corresponding to the discharge hole 54 for non-standard products are provided in the main body frame 10 itself in the form of a partition wall formed by the reinforcing ribs 11 and 12 of the main body frame 10. The through holes 54 and 57 of the sorting drum D
A small rotary type pellet sorting machine characterized in that the pellets are discharged from the main body frame 10 through drop ports S1 and S2.