JP3543169B2 - Apron conveyor - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to, for example, an apron conveyor used to scrape bottles collected and stored in a hopper for recycling from the hopper.
[0002]
[Prior art]
As shown in FIG. 9, as this type of conveyor, there is known a conveyor in which a workpiece engaging blade 63 is provided at the downstream end of the upper surface of an apron 61 in the conveyor transport direction.
[0003]
[Problems to be solved by the invention]
Waste glass bottles are mixed with bottles of various sizes and shapes, from extremely small or small bottles containing medicine bottles or drinks to oversized bottles such as laver bottles and fruit wine bottles. These mixed waste glass bottles are stored in a hopper and scraped out of the hopper using an apron conveyor.
[0004]
Aprons Conveyor aprons are made to fit oversized bottles. Assuming that the mixing ratio of the bottles is large and small, two to four bottles are placed on average in one apron. However, only small bottles may be unevenly distributed in the hopper, and if there are only small bottles, one apron may have as many as seven to ten bottles.
[0005]
As shown in FIG. 9B, when the apron 61 moves on the reverse path from the upper movement path to the lower movement path, the apron 61 is turned over, and the bottles B on the apron 61 fall at the same time. The falling bottle B is sent by the belt conveyor 64 to the next size sorting / aligning device.
[0006]
If a large number of bottles are placed on one apron, many bottles will be transferred from the apron conveyor to the belt conveyor and sent to the size sorting / aligning device. If the number of bottles sent exceeds the processing capacity of the size sorting and sorting device, the accuracy of sorting and sorting will be reduced, and the bottle collection rate will be reduced.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to provide an apron conveyor in which the number of bottles falling from the end of the transport path of the apron conveyor is reduced so as not to hinder the processing in the next step.
[0008]
[Means for Solving the Problems]
In the apron conveyor according to the present invention, a workpiece engaging blade is provided at a position where the upper surface of the bottom plate of the apron is bisected in the conveyor transport direction.
[0009]
In the apron conveyor according to the present invention, a bottle accommodating space is formed between the blade of the preceding apron and the blade of the succeeding apron, and the apron is moved so that the space is divided into two during the inversion of the apron. Approximately half of the bottles on the upstream side of the bottle that has fallen first fall, and then the other half of the bottles fall second. Therefore, it is possible to reduce the variation in the number of bottles falling from the end of the transport path of the apron conveyor.
[0010]
Furthermore, the blade is swingable in the conveyor conveyance direction with respect to the bottom plate of the apron, and the swing of the blade to the upstream side in the conveyor conveyance direction is regulated by the stopper, and the blade is urged by a spring so that the blade comes into contact with the stopper. If the blade of the apron moving on the reversing path from the upper moving path to the lower moving path contacts the fixing member and is tilted to the downstream side in the conveyor conveyance direction, the first drop and the second The timing of the second drop can be freely set.
[0011]
Further, it is preferable that the conveyor conveyance path is inclined so that the end thereof is higher than the start end thereof, and the start end of the conveyor conveyance path faces the discharge port of the conveyed product storage hopper.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
[0013]
In the following description, the front and rear refer to the right side of FIG. 1 as a front and the opposite side to the rear with reference to FIG. 1, and the left and right refer to the left and right sides thereof as viewed from the front. .
[0014]
Referring to FIG. 1, a bottle storage hopper 11, an apron conveyor 12 having a transport path extending forward and obliquely upward from the bottle storage hopper 11, and a belt having a transport path extending forward and obliquely upward from below the transport path end of the apron conveyor 12. Conveyor 13 is shown.
[0015]
A forward discharge port 15 is provided at the center in the left-right direction at the lower end of the front wall 14 of the bottle storage hopper 11. The transport path of the apron conveyor 12 has its start end facing the inside of the hopper 11 through the discharge port 15. Between the end of the conveyance path of the apron conveyor 12 and the beginning of the bell conveyor 13, a forwardly inclined guide plate 16 is provided. A size selection / alignment device (not shown) is arranged along the transport path of the belt conveyor 13.
[0016]
The apron conveyor includes an endless chain 21 extending in parallel with each other and a number of aprons 22 extending between the two chains 21, as shown in detail in FIGS.
[0017]
Both ends of a support shaft 23 corresponding to each apron 22 are attached to both chains 21 by bearings 24.
[0018]
The apron 22 includes a flat bottom plate 31, a pair of left and right side plates 32 provided on both left and right edges of the bottom plate 31 so as to be orthogonal to the bottom plate 31, and the bottom plate 31 so as to pass over the center of the both side plates 32 in the front-rear direction. And a plate-like blade 33 provided in a fixed manner so as to be orthogonal to the upper surface.
[0019]
A boss 34 wound around the support shaft 23 is integrally provided at the rear edge of the bottom plate 31. A pair of left and right long holes 35 extending forward from near the left and right ends of the boss 34 are provided in the bottom plate 31. The front part of the bottom plate 31 of the rear apron 22 is overlapped on the rear part of the bottom plate 31 so as to cover the long hole 35 of the front apron 22. On the lower surface of the bottom plate 31, a pair of right and left substantially U-shaped connecting rods 36 are provided. The connecting rod 36 of the rear apron 22 is slidably engaged with the boss 34 of the front apron 22 from below, and the front vertical portion of the connecting rod 36 of the rear apron 22 is connected to the rear side. Of the apron 22.
[0020]
When the connecting rod 36 slides with respect to the boss 34, the pitch of the adjacent aprons 22 can be changed. The portion where the bottom plate 31 of the subsequent apron 22 is overlapped lacks the side plate 32 so that the side plates 32 of the adjacent apron 22 do not overlap. One bottle accommodating space is formed between the blades 33 of the adjacent aprons 22.
[0021]
Next, with reference to FIG. 4, the bottle transport operation by the apron conveyor 12 will be described.
[0022]
FIG. 4A shows that the first apron 22 preceding the reversing path of the transport path is A1, the second apron 22 following it is A2, and the third apron 22 at the end of the upper moving path of the transport path is A3. Are indicated respectively. A bottle accommodating space is formed between the same blades 33 adjacent to these three aprons A1, A2, A3, and the bottom plate 31 forming each bottle accommodating space has a U-shape when viewed from the side. It is bent. The second apron A2 shows a state immediately before the bottom plate 31 becomes horizontal. The bottle on the downstream side of the blade 33 of the first apron A1 has been dropped, and the second bottle group B2 remains on the upstream side. A first bottle group B1 and a fourth bottle group B4 are placed on the second apron A2 on the upstream and downstream sides of the blade 33, respectively.
[0023]
When the apron conveyor 12 is further driven from the state shown in FIG. 4 (a), as shown in FIG. 4 (b), the bottom plate 33 of the second apron A2 is inclined forward and downward, and the blades of the second apron A2 The first group of bottles B1 that was downstream of 33 falls. This is the first drop of the bottle groups B1 and B2 in one bottle storage space.
[0024]
Subsequently, when the apron conveyor 12 is driven, the second group of bottles B2, which is located upstream of the blade 33 of the first apron A1, falls. This is the second drop of the bottle groups B1 and B2 in one bottle storage space.
[0025]
Further, when the apron conveyor is driven, the bottle group B3 and the bottle group B4 in the bottle storage space following the bottle storage space fall in this order.
[0026]
Another embodiment will be described with reference to FIGS. Here, portions corresponding to those of the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different points will be described.
[0027]
Referring to FIGS. 5 and 6, the blade 33 is attached to the bottom plate 31 of the apron 22 by a hinge 41 so as to be swingable back and forth. A pair of left and right triangular plate-like stoppers 42 are provided on both right and left edges of the upper surface of the bottom plate 31 adjacent to the blade 33 on the upstream side in the conveyor conveyance direction. Right below the blade 33 near the hinge 41, the bottom plate 31 is provided with a pair of left and right openings 43. A lower extension 44 is provided at the lower edge of the blade 33, and projects below the bottom plate 31 through the opening 43. One end of a tension coil spring 45 is attached to the tip of the extension 44, and the other end is attached to the lower surface of the bottom plate 31 in front of the extension 44.
[0028]
The blade 33 is urged to swing counterclockwise in FIG. 5 by the spring 45, and the blade 33 is brought into contact with the stopper 42, so that the blade 33 is held perpendicular to the bottom plate 31. It has become so.
[0029]
Referring to FIGS. 7 and 8, a blade tilting member 51 is disposed and fixed inside the apron inversion path. The blade tilting member 51 is a horizontal round bar extending in the left-right direction in the movement path of the extension portion 44 of the blade 33, and is fixed to a pair of left and right forward-facing arms 53 provided on the conveyor side frame 52. . A conveyor drive shaft 54 is supported by the frame 52, and a sprocket 55 around which a chain is wound is fixed to the drive shaft 54. The arm 53 has a hole 56 through which the drive shaft 54 passes.
[0030]
When the blade extension portion 44 of the apron 22 moving on the reversing path is brought into contact with the blade tilting member 51, the blade 33 is tilted to the downstream side in the conveyor conveyance direction. Thereby, in the above embodiment, the fall of the second bottle group B2 on the first apron A1 is accelerated as compared with the case of the above embodiment. By appropriately setting the position of the blade tilting member 51, the timing of dropping the bottle group B2 is set. The order of dropping the bottles is shown in FIGS. 4A and 4B. It is preferable that the second bottle group B2 is set to start dropping at an intermediate point between the drop start time of the first bottle group B1 and the drop start time of the third bottle group B3.
[0031]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the fluctuation | variation of the number of bottles which fall from the terminal of the conveyance path of an apron conveyor can be reduced.
[Brief description of the drawings]
FIG. 1 is a side view of a peripheral device including an apron conveyor according to the present invention.
FIG. 2 is a longitudinal sectional view of the apron conveyor.
FIG. 3 is a plan view of the apron conveyor.
FIG. 4 is an explanatory view of a bottle unloading operation of the apron conveyor.
FIG. 5 is a longitudinal sectional view corresponding to FIG. 2 and showing a modification of the apron conveyor.
FIG. 6 is a plan view corresponding to FIG. 3, showing a modification of the apron conveyor.
FIG. 7 is an explanatory diagram of a bottle unloading operation of an apron conveyor according to the modification.
FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7;
FIG. 9 is an explanatory view of a bottle unloading operation of an apron conveyor showing a conventional example.
[Explanation of symbols]
11 Hopper 15 Discharge port 22 Apron 31 Apron bottom plate 33 Blade 42 Stopper 45 Spring 51 Blade tilting member

Claims (2)

At the position where the upper surface of the bottom plate 31 of the apron 22 is bisected in the conveyor transport direction, a transport object engaging blade 33 is provided,
The blade 33 is swingable with respect to the bottom plate 31 of the apron 22 upstream and downstream in the conveyor conveyance direction, the blade 33 is urged by a spring 45 to swing upstream in the conveyor conveyance direction, and the stopper 42 is The blade 33 is arranged so as to restrict the swing of the blade 33 to the upstream side in the conveyor conveyance direction and hold the blade 33 in a state perpendicular to the bottom plate 31 , and the blade tilting member 51 is moved downward from the upper movement path. apron conveyor reverse path is abutted against the blade 33 of the apron 22 in the moving and is disposed fixed to the moving path inside of the blade 33 so as to tilt the conveyor downstream side toward the path. 2. The apron conveyor according to claim 1 , wherein the conveyor conveyance path is inclined so that the end thereof is higher than the start end thereof, and the start end of the conveyor conveyance path faces the discharge port 15 of the article storage hopper 11.

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