TW201540380A - Filtering apparatus for conveyed objects - Google Patents

Abstract

The disclosure provides a filtering apparatus for conveyed objects which can filter a variety of conveyed objects. The disclosure includes: a transporting conveyor 30 for conveying the variety of conveyed objects 3; a plurality of shooters 34 disposed on a side in a direction orthogonal to a conveying direction of the transporting conveyor 30 for exhausting the conveyed objects 3. The transporting conveyor 30 leans downwards toward the shooters 34. A plurality of shutters 35 are disposed on a side of the shooters 34 of the transporting conveyor 30, and the shutters 35 prevent each of the conveyed objects 3 to be exhausted to the shooters 34 when the shutters 35 are in a closed status, and the shutters 35 allow each of the conveyed objects 3 to be exhausted to the shooters 34 when the shutters 35 are in an open status. Determine apparatuses 37 for determining types of the conveyed objects 3 are disposed closer to an upstream side of the transporting conveyor 30 than each of the shooters 34. Each of the determine apparatuses 37 enables the shutters 35 to be in an open status when the conveyed objects 3 are predetermined types, and otherwise enables the shutters 35 to be in a closed status.

Description

Transport screening device

The present invention relates to a transport screening device.

In the prior art, it is known to filter the conveyed material on the belt conveyor in the continuous operation according to the type, that is, to apply the object to the conveyed object by the cylinder from the left-right direction with respect to the conveyance direction. An external force such as extrusion is performed, and the conveyed matter is discharged to the outside of the belt conveyor (for example, other belt conveyors or chutes, etc.), and is filtered.

Further, Patent Document 1 discloses a sorting device for a multi-variety multi-shaped electric component, which is provided by sorting and supplying a plurality of types of multi-shaped parts in each step for use in manufacturing each printed circuit board. The sorting device includes: a length measuring unit that measures the length of the electrical parts transported on the conveyor; a bar code reader that reads the bar code; a control unit that performs classification control; and a sorting unit that uses a plurality of varieties and shapes The electrical parts are classified into figure numbers corresponding to a plurality of product numbers, and the plurality of product numbers are used to respectively mount a plurality of types of multi-shaped electrical parts.

The classification unit includes a sorting conveyor that transports when the electric component is placed, and a plurality of chutes that are disposed on both sides of the sorting conveyor and that house the electric components. The classification conveyor uses the control corresponding to the result recognized by the barcode reader The control of the portion is driven to be input into a designated chute in one of two directions orthogonal to the advancing direction. By configuring as described above, it is possible to distribute a multi-shape and multi-weight motor component to a plurality of chutes at high speed.

[Prior Art Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2001-19146

However, in the sorting device described in Patent Document 1, it is necessary to arrange a plurality of chutes on both sides of the sorting conveyor, and in addition to including the sorting conveyor, it is also necessary to include transport capable of being transported to the sorting conveyor. The belt moves in a direction perpendicular to the direction, and thus the configuration of the apparatus and the control related to the classification become complicated.

The present invention has been made in view of the above circumstances, and it is an object of the invention to provide a transport object screening device capable of reliably screening a conveyed object while having a simple configuration.

The object of the present invention is achieved by the following constitution.

(1) A conveyance screening device comprising: a conveyance conveyor that conveys a plurality of conveyed objects; and a plurality of chutes disposed on one side in a direction orthogonal to a conveyance direction of the conveyance conveyor, and the discharges are the same type The transporting object; the transport screening device is characterized by: The conveyance conveyor is inclined downward toward the chute side, and a plurality of shutters are disposed on the chute side of the conveyance conveyor, and the plurality of shutters prevent the respective conveyed objects from being oriented in a closed state. The chute is discharged, and the respective conveyed materials are allowed to be discharged to the chute in an open state, and the type of the conveyed object is disposed on the upstream side of the transport conveyor from each of the chutes. In the discriminating device, each of the discriminating devices determines the type of the transported object, and when the transported object is of a predetermined type, the shutter is opened, and the transported object is discharged to the chute. When the conveyed material is other than the predetermined type, the shutter is closed, and the conveyed object is conveyed to the downstream side of the conveyance conveyor.

(2) The transport object screening device according to the above aspect, wherein the sensing device detects that the transported object has passed by being disposed on an upstream side of the transport conveyor from each of the chutes. The discriminating device receives the sensor's perception of the passage of the conveyed object, and determines the type of the transported object.

(3) The transport object screening device according to (1) or (2), wherein the other side of the direction opposite to the transport direction of the transport conveyor is disposed on the other side facing the chute. In the air blowing unit, the air blowing unit moves the conveyed object toward the chute side by blowing compressed air, and the discriminating device determines the type of the transported object, and the transported object is of a predetermined type In the case where the air blowing unit blows the compressed air to the transport object The air is discharged to the chute, and when the conveyed material is other than a predetermined type, the air blowing unit does not blow compressed air to the conveyed object.

(4) The conveyance screening device according to any one of (1) to (3), wherein a return conveyor is connected to a downstream end of the conveyance conveyor, and the return conveyor is used for the return conveyor The conveyed object is returned to the upstream end of the conveying conveyor.

(5) The transport object screening device according to any one of (1), wherein the conveyance is a pull tab used in a slide fastener, and the pull tab is in a thickness direction thereof The conveyance conveyor is conveyed to the conveyance conveyor in a vertical manner.

When the type of the conveyed object is a predetermined type, the transporting object screening device discharges the transported material to the chute when the shutter is in an open state, and when the type of the transported object is other than a predetermined type, When the shutter is closed, the conveyed object is conveyed to the downstream side of the conveyance conveyor. Therefore, each chute discharges the same type of conveyed material, and the conveyed object can be screened.

At this time, the conveyance conveyor is inclined such that the chute side is downward, whereby the conveyance can be discharged to the chute by its own weight as long as the shutter is opened, so that the conveyance can be reliably discharged with a simple configuration. .

Further, the conveyed object is conveyed along the side of the chute while being guided by the shutter in the closed state, and can be immediately discharged to the chute when the shutter is opened. The discharge of the conveyed material can be performed more reliably.

1‧‧‧Transport screening device

3, 3A, 3B‧‧‧ pull film (transport)

5‧‧‧Part feeder

6‧‧‧ Input

7‧‧‧ Track

8‧‧‧Exciting body

9, 16, 23, 41‧ ‧ slopes

10‧‧‧Supply conveyor (transport conveyor)

11‧‧‧First guiding member

11a, 42a‧‧‧ side

12‧‧‧ One end of the width direction

13‧‧‧First gas injection hole

14‧‧‧ gas supply nozzle

15‧‧‧ Third guiding member

20‧‧‧Upstream conveyor (transport conveyor)

21, 31‧‧‧ drive motor

22‧‧‧ Passing the sensor

23a‧‧‧The other side wall of the width direction

23b‧‧‧width side wall

30‧‧‧ downstream conveyor (transport conveyor)

32‧‧‧Measurement device

33‧‧‧ wall members

34‧‧‧ chute

34a‧‧‧Export

34b‧‧‧ observation window

35‧‧‧1.

36‧‧‧Sensor

37‧‧‧ discriminating device

37a‧‧‧Light source

37b‧‧‧Image inspection device

38‧‧‧Frame

39‧‧‧Blowing unit

40‧‧‧Return conveyor

42‧‧‧Second guiding member

43‧‧‧ drive mechanism

44‧‧‧width side of the other side

45‧‧‧ gas supply unit

46‧‧‧fourth guiding member

47‧‧‧Second gas injection hole

L‧‧‧Transport distance

Fig. 1 is a perspective view of a conveyor screening device.

Fig. 2 is a perspective view of the conveyance screening device as seen from a direction different from Fig. 1;

Fig. 3 is a plan view of the transport object screening device in which the parts feeder is omitted.

Figure 4 is a perspective view of the periphery of the supply conveyor.

Fig. 5 is a perspective view of the periphery of the upstream conveyor.

Figure 6 is a front elevational view of the downstream conveyor.

Fig. 7 is a front elevational view showing a side surface of the first guiding member.

Fig. 8 is a perspective view showing the periphery of a gas supply unit.

Hereinafter, an embodiment of the transport object screening device of the present invention will be described in detail based on the drawings.

As shown in FIG. 1 to FIG. 3, the transport object sorting apparatus 1 of the present embodiment includes a component feeder 5 that accommodates a plurality of pull tabs (transports) 3 used in the zipper, and the plurality of pull tabs (transports) 3) discharges one by one; the conveyor conveys the pull-tab 3 supplied from the component feeder 5 to the downstream side; and the return conveyor 40 whose upstream side end is connected to the downstream end of the conveyance conveyor, and The downstream side end portion is connected to the part feeder 5. The conveyor conveyor includes a plurality of conveyors arranged along the transport direction Machine 10, conveyor 20, conveyor 30. In the present embodiment, the conveyance conveyor includes a supply conveyor 10, an upstream conveyor 20 whose upstream side end is connected to the downstream end of the supply conveyor 10, and a downstream conveyor 30 whose upstream end is provided. It is connected to the downstream side end of the upstream side conveyor 20.

The part feeder 5 includes an input port 6 into which a plurality of pull tabs 3 are inserted, a spiral track 7 for transporting the loaded pull tab 3 to the next step, and an exciter 8 for applying vibration to the rail 7. The rail 7 is connected to the upstream end portion of the supply conveyor 10 via the slope 9, and the tab 3 is conveyed to the supply conveyor 10 side by the vibration of the vibrating body 8. Further, the pull tab 3 is conveyed such that its thickness direction is perpendicular to the upper surface of the rail 7. In the following steps, the pull tab 3 is also conveyed so that its thickness direction is perpendicular to the upper surfaces of the supply conveyor 10, the upstream conveyor 20, the downstream conveyor 30, and the return conveyor 40.

The supply conveyor 10 is horizontally extended with respect to the floor on which the conveyed object screening apparatus 1 is provided, and is driven by a drive motor (not shown), whereby the handle 3 is conveyed to the downstream side by the upper surface. Further, the first guide member 11 is disposed above the supply conveyor 10 with a small gap equal to or less than the thickness of the pull tab 3, and the pull tab 3 on the supply conveyor 10 is along the side of the first guide member 11. 11a guidance.

Further, the first guiding member 11 is displaced toward the downstream side toward the side in the width direction of the supply conveyor 10 (the side of the return conveyor 40). Thereby, the width direction distance of the side surface 11a of the 1st guide member 11 and the edge part 12 side of the width direction of the supply conveyor 10 decreases toward the downstream side. Further, the side surface 11a of the first guiding member 11 is spaced from the width direction side end portion 12 of the supply conveyor 10 in the width direction. The distance is set to be substantially equal to the width corresponding to one of the pull tabs 3 at a position overlapping the downstream end portion of the first guide member 11 in the transport direction. Thereby, the supply conveyor 10 prevents the plurality of pull tabs 3 from being aligned in the width direction at a position overlapping the downstream end portion of the first guide member 11 in the transport direction, and only one pull tab 3 is transported. Further, the supply conveyor 10 can supply the plurality of tabs 3 to the upstream conveyor 20 in a state in which the plurality of tabs 3 are arranged side by side in the transport direction.

Here, when the supply conveyor 10 is overlapped with the downstream end portion of the first guide member 11 in the conveyance direction, and the plurality of tabs 3 are arranged side by side in the width direction, the tab 3 is dropped to the supply and conveyance. One side of the width direction of the machine 10. However, in the present embodiment, the return conveyor 40 is disposed adjacent to one side in the width direction of the supply conveyor 10. Further, as shown in FIG. 4, the supply conveyor 10 is located above the return conveyor 40 at a position overlapping the downstream end portion of the first guide member 11 in the conveyance direction. Therefore, the pull tab 3 dropped from the supply conveyor 10 is supported by the return conveyor 40. Further, the pull tab 3 can be returned to the upstream end portion of the supply conveyor 10 via the component feeder 5 by the return conveyor 40, and can be transported to the downstream side by the supply conveyor 10 again.

Further, as shown in FIG. 4, a plurality of first gas injection holes 13 are formed on the side surface 11a of the first guiding member 11. Each of the first gas injection holes 13 is formed at a predetermined interval in the longitudinal direction of the first guiding member 11. According to the present embodiment, six first gas injection holes 13 are formed. Each of the first gas injection holes 13 injects gas toward one side in the width direction of the supply conveyor 10. Each of the first gas injection holes 13 and the gas supply nozzle 14 provided at an upper portion of the first guiding member 11 are in the first guiding structure The internal connection of the piece 11. The gas supply nozzle 14 is connected to a gas supply source (not shown). The air supplied from the gas supply nozzle 14 is ejected from the first gas injection hole 13.

Here, as shown in FIG. 7, the distance between the respective first gas injection holes 13 and the upper surface of the supply conveyor 10 in the vertical direction is different. Each of the first gas injection holes 13 selects which first gas injection hole 13 to eject the gas depending on the type of the pull tab 3 to be supplied. That is, the first gas injection hole 13 is selected such that the distance in the vertical direction from the upper surface of the supply conveyor 10 to the first gas injection hole 13 is larger than twice the thickness of the handle 3 and is twice or less. Thereby, the gas supply source supplies the gas to the gas supply nozzle 14 so that the gas is injected from the selected first gas injection hole 13.

Thus, by selecting an appropriate first gas injection hole 13, when the plurality of pull tabs 3 are overlapped in the up and down direction, the pull tab 3 located at the lowermost position (abutting on the upper surface of the supply conveyor 10) is directly The side surface 11a of the first guiding member 11 is guided, and only the tab 3 that overlaps above can be removed by the gas. That is, the first gas injection hole 13 prevents the plurality of tabs 3 from overlapping in the vertical direction. Thereby, the supply conveyor 10 can supply the handle 3 to the upstream conveyor 20 one by one.

As described above, the first guide member 11 prevents the overlap of the direction (width direction) orthogonal to the conveyance direction, and prevents the slider 3 that overlaps in the vertical direction by the first gas injection hole 13 Continue to guide along the third guiding member 15 toward the downstream side. The third guide member 15 is disposed above the supply conveyor 10 with a small gap equal to or less than the thickness of the pull tab 3, and is displaced toward the other side in the width direction of the supply conveyor 10 toward the downstream side. The sheet 3 is guided to the intermediate portion in the width direction of the supply conveyor 10.

A slope 16 is disposed at the downstream end of the supply conveyor 10. The slope 16 is inclined downward toward the upper surface of the upstream side conveyor 20. The pull tab 3 is slid down along the slope 16 from the intermediate portion in the width direction of the supply conveyor 10, and is supplied to the upstream conveyor 20.

The upstream side conveyor 20 extends horizontally with respect to the ground and is driven by the drive motor 21, whereby the pull tab 3 is conveyed to the downstream side by the upper surface thereof. Further, at the downstream portion of the upstream conveyor 20, as shown in Fig. 5, a passing sensor 22 for detecting the passage of the pull tab 3 is provided. When the pull tab 3 detected by the sensor 22 satisfies the condition described later, it is transported to the downstream side by the upstream conveyor 20 and is supplied from the upstream conveyor 20 to the downstream conveyor 30. .

The downstream side conveyor 30 is driven by the drive motor 31, whereby the handle 3 is conveyed to the downstream side by the upper surface. Here, the measuring device 32 that measures the conveyance distance of the handle 3 is provided on the downstream conveyor. The measuring device 32 has an encoder disposed at the downstream end of the downstream conveyor 30 on the side of the return conveyor 40. The encoder measures the conveying speed of the downstream conveyor 30.

Here, as shown in FIG. 3, the pull tab 3 on the upstream side of the two pull tabs 3 that are continuously transported is the upstream pull tab 3A, and the pull tab 3 on the downstream side is the downstream pull tab 3B. . The measuring device 32 performs the transport distance L of the downstream side pull tab 3B from when the downstream side pull tab 3B is detected by the sensor 22 until the passage of the upstream side pull tab 3A by the sensor 22 is detected. Determination. According to the present embodiment, when the passage of the downstream side pull piece 3B is detected by the sensor 22, the encoder measures the conveyance speed of the downstream side conveyor 30. The measuring device 32 is based on the downstream side conveying The conveyance speed of the machine 30 starts the measurement of the conveyance distance L of the downstream side pull piece 3B. Then, when the sensor device 22 detects the passage of the upstream side pull tab 3A, the measuring device 32 ends the measurement of the transport distance L of the downstream side pull tab 3B. At this time, when the conveyance distance L is equal to or greater than the predetermined value A, the drive motor 21 continuously operates the upstream conveyor 20 to convey the upstream side pull tab 3A downstream. When the conveyance distance L is smaller than the predetermined value A, the drive motor 21 stops the operation of the upstream conveyor 20 until the conveyance distance L is equal to or higher than the predetermined value A.

As described above, the upstream conveyor 20 can maintain the distance between the downstream side pull tab 3B and the upstream side pull tab 3A on the downstream side conveyor 30 at a predetermined value A or more by intermittent operation. Thereby, the distance between the plurality of pull tabs 3 is always equal to or greater than the predetermined value A, and the recognition at the time of screening according to the type becomes easy. Further, when the plurality of pull tabs 3 are discharged by the chute 34 to be described later, they can be reliably discharged one by one.

Here, the predetermined value A of the present embodiment is set to be larger than the width of the shutter 35 in the transport direction to be described later. Further, the predetermined value A is set based on the time required for the conveyance speed of the downstream conveyor 30 and the opening and closing of the shutter 35. That is, the predetermined value A is set such that the pull tab 3 is not transported to a position in contact with the shutter 35 until the shutter 35 is changed from the open state to the closed state. Thereby, the effect of preventing the discharge of the different types of tabs 3 to the same chute 34 can be achieved.

Further, the conveyance speed of the upstream conveyor 20 is set to be faster than the conveyance speed of the supply conveyor 10. Thereby, the distance of the plurality of tabs 3 on the upstream conveyor 20 can be made more distant than the distance of the plurality of tabs 3 on the conveyor 10. Moreover, the upstream side conveyor 20 pulls the state in which the distances of the plurality of pull tabs 3 are separated in advance. Since the sheets 3 are supplied to the downstream conveyor 30 one by one, it is easy to maintain the distance of the plurality of tabs 3 on the downstream conveyor 30 at a predetermined value A or more.

Further, the conveyance speed of the downstream conveyor 30 is set to be faster than the conveyance speed of the upstream conveyor 20. Thereby, it is easier to maintain the distance of the plurality of tabs 3 on the downstream conveyor 30 at a predetermined value A or more on the downstream conveyor 30.

Unlike the supply conveyor 10 or the upstream conveyor 20, the downstream conveyor 30 is inclined downward so that the other side in the width direction is lower than the one side in the width direction with respect to the horizontal direction. In other words, the downstream conveyor 30 is inclined downward toward the side of the chute 34 to be described later. Therefore, when the pull-tab 3 is conveyed by the downstream side conveyor 30, it shifts to the other side of the width direction by its own weight. The wall member 33 that prevents the falling of the tab 3 is disposed on the other side in the width direction of the downstream conveyor 30. As shown in FIG. 5, the wall member 33 protrudes upward from the upper surface of the downstream conveyor 30. The pull tab 3 is guided along the wall member 33.

A slope 23 is disposed at a downstream end portion of the upstream conveyor 20. The slope 23 is inclined downward toward the upper surface of the downstream side conveyor 30. The pull tab 3 is slid down along the slope 23 from the intermediate portion in the width direction of the upstream conveyor 20 and supplied to the downstream conveyor 30.

As shown in FIG. 5, the slope 23 includes a width direction one side wall portion 23b and a width direction other side wall portion 23a which are spaced apart in the width direction. The other side wall portion 23a in the width direction is disposed in the vicinity of the wall member 33 of the downstream side conveyor 30, and is disposed substantially parallel to the wall member 33. On the other hand, the one side wall portion 23b in the width direction is inclined so as to approach the other side wall portion 23a in the width direction toward the downstream side. Configuration. Therefore, the pull tab 3 is guided to the vicinity of the wall member 33 of the downstream conveyor 30 by the other side wall portion 23a in the width direction and the side wall portion 23b in the width direction. Thereby, the handle 3 is supplied to the downstream conveyor 30 in a state where the thickness direction is perpendicular to the downstream conveyor 30. That is, the pull tab 3 can be prevented from being on the downstream side conveyor 30, and the upper surface or the lower surface of the pull tab 3 is supported by the wall member 33.

Further, the chute 34 is provided on the other side in the width direction of the downstream conveyor 30. The chutes 34 are disposed at a predetermined interval in the transport direction of the downstream conveyor 30. Each of the chutes 34 discharges only the same type of tabs 3 from the downstream side conveyor 30. In the present embodiment, four chutes 34 are provided so that the shapes of the first chute 34 and the third chute 34 from the upstream side are equal, and the shapes of the second chute 34 and the fourth chute 34 are equal. Thereby, the arrangement portion of the container for accommodating the tabs 3 discharged from the discharge ports 34a of the respective chutes 34 can be secured. In addition, the shape of the chutes 34 is not particularly limited. Further, an observation window 34b may be provided in each of the chutes 34 so that the discharge state of the handle 3 can be visually observed from the outside.

The shutter 35 is disposed between each of the chutes 34 and the downstream side conveyor 30. The shutter 35 is displaceable in the up and down direction, and in the closed state (the state in the lower state), the tab 3 is prevented from being discharged to the chute 34. Further, the shutter 35 allows the tab 3 to be ejected from the chute 34 in the open state (the state in the upper state). Further, the wall member 33 is not disposed at a position where the shutter 35 is disposed.

As shown in FIG. 3, the sensor 36 that has detected that the pull tab 3 has passed is disposed on the upstream side of the downstream conveyor 30 than the respective chutes 34. The sensor 36 is preferably a non-contact sensor such as a photo-sensing sensor or a proximity sensor. Moreover, the pull tab 3 As shown in FIG. 6, the discriminating device 37 for discriminating the type is disposed on the upstream side of the downstream conveyor 30 than the respective chutes 34. The discrimination device 37 is disposed above the sensor 36 and has a light source 37a attached to the frame 38 and an image inspection device 37b. The image inspecting device 37b has a camera that images the pull tab 3 or an analysis device that analyzes an image of the pull tab 3 captured by the camera, and can determine the type of the pull tab 3 based on the image analysis result. The light source 37a provides sufficient illuminance to the periphery of the pull tab 3 so that the image inspecting device 37b can surely perform image analysis.

Each of the discriminating devices 37 receives the perception of the passage of the pull tab 3 by the sensor 36, and discriminates the type of the pull tab 3. Further, when each of the pull tabs 3 has a predetermined type, each of the discriminating devices 37 opens the shutter 35 to the chute 34. In addition, when the pull tab 3 is other than the predetermined type, each of the discriminating devices 37 brings the shutter 35 into a closed state, and conveys the pull tab 3 to the downstream side of the downstream conveyor 30.

Therefore, each of the chutes 34 discharges only the tabs 3 of the same kind, and the tabs 3 can be screened. At this time, the downstream conveyor 30 is inclined such that the chute 34 side is downward. Therefore, the slider 3 conveyed in the downstream conveyor 30 is positioned on the chute 34 by the weight of the tab 3 . Thereby, the pull tab 3 is surely discharged to the chute 34 by the simple configuration using the weight of the pull tab 3 when the shutter 35 is opened. Further, when the shutter 35 is in the closed state, the pull tab 3 is conveyed along the side of the chute 34 while being guided along the wall member 33 and the shutter 35. Thereby, the pull tab 3 can be immediately discharged to the chute 34 when the shutter 35 is opened.

Moreover, as described, the pull tab 3 has its thickness direction and the downstream side conveyor Since the conveyance of the handle 3 to the downstream side conveyor 30 is carried out in a vertical manner, when the slider 3 is discharged to the chute 34, the shutter 35 can be opened and closed by an amount corresponding to the thickness of the tab 3, and the shutter 35 can be reduced. Actions. Further, the outer shape of the pull tab 3 or the mark or the like provided on the pull tab 3 is easily recognized by the discriminating device 37, so that the type of the pull tab 3 can be surely determined.

Further, in the downstream conveyor 30, the air blowing unit 39 is disposed on the side (the side in the width direction) facing the chute 34. The blower unit 39 blows compressed air to the pull tab 3 conveyed by the downstream conveyor 30, whereby the pull tab 3 is positioned on the side of the chute 34. The air blowing unit 39 determines the type of the pull tab 3 by the discriminating device 37, and when the pull tab 3 has a predetermined type, the compressed air is blown to the pull tab 3. At this time, the discriminating device 37 turns the shutter 35 into an open state. Thereby, the pull tab 3 is pressed toward the chute 34 by the compressed air, and is discharged to the chute 34. On the other hand, the air blowing unit 39 determines the type of the pull tab 3 in the discriminating device 37, and when the pull tab 3 is other than the predetermined type, the compressed air is not blown to the pull tab 3. At this time, the discriminating device 37 brings the shutter 35 into a closed state. Thereby, the pull tab 3 is not discharged to the chute 34, but is conveyed to the downstream side of the downstream side conveyor 30.

In this manner, the pull tab 3 can be more reliably discharged by blowing the compressed air by the air blowing unit 39 in addition to the self-weight of the pull tab 3.

In addition, when the type of the pull tab 3 cannot be discriminated by the discriminating device 37 or the distance between the plurality of tabs 3 is smaller than the predetermined value A, the pull tab 3 is not discharged to any of the chutes 34, but is transported to the downstream side. The downstream side end of the conveyor 30. The reason is that different types of pull tabs 3 are discharged to the same chute 34.

A slope 41 is disposed at a downstream end portion of the downstream conveyor 30. The ramp 41 is inclined downward toward the upper surface of the return conveyor 40. The pull tab 3 is slid down from the downstream side conveyor 30 along the slope 41 and supplied to the return conveyor 40. The pull tab 3 that cannot be screened in the downstream side conveyor 30 is transported by the return conveyor 40.

The return conveyor 40 is driven by a drive motor (not shown) and extends adjacent to one side in the width direction of the supply conveyor 10, the upstream conveyor 20, and the downstream conveyor 30. Further, the return conveyor 40 is inclined upward as it goes from the upstream side toward the downstream side. Further, as shown in FIG. 4, the return conveyor 40 is located below the supply conveyor 10 at a position overlapping the downstream end portion of the first guide member 11 in the conveyance direction.

Further, above the downstream portion of the return conveyor 40, more specifically, the second guiding member 42 is disposed above the position where the first guiding member 11 overlaps in the conveying direction. The second guiding member 42 is displaceable in the up and down direction by the driving mechanism 43, and the tab 3 is guided along the side surface 42a in the closed state (in the lower state), in the open state (the state in the upper state) The lower pull tab 3 is allowed to be transported to the downstream side.

The second guiding member 42 is disposed substantially in parallel with the first guiding member 11, and is displaced toward the other side in the width direction of the return conveyor 40 toward the downstream side of the return conveyor 40, and extends to the returning path. The other end portion 44 of the conveyor 40 in the width direction. Further, the return conveyor 40 is located above the supply conveyor 10 at a position overlapping the downstream end portion of the second guiding member 42 in the conveying direction.

Therefore, the pull tab 3 transported by the return conveyor 40 is made to make the second guide The member 42 is in a closed state and is guided by the side 42a of the second guiding member 42 so as to be returned to the supply conveyor 10. Thereby, the return conveyor 40 can quickly supply the handle 3 to the supply conveyor 10 when the handle 3 of the supply conveyor 10 is insufficient.

Further, the gas supply unit 45 is disposed on the upstream side of the second guide member 42 of the return conveyor 40. The gas supply unit 45 is disposed above the return conveyor 40 and extends in the width direction of the return conveyor 40. The gas supply unit 45 has a plurality of second gas injection holes 47 as shown in FIG. Each of the second gas injection holes 47 is disposed at a predetermined interval in the longitudinal direction of the gas supply unit 45. Each of the second gas injection holes 47 blows the gas toward the upstream side pull tab 3 from the second gas injection hole 47 (refer to an arrow in FIG. 8). Thereby, the movement of the tab 3 toward the downstream side can be restricted. Therefore, the gas supply unit 45 restricts the movement of the tab 3 toward the downstream side before the second guiding member 42 is changed from the open state to the closed state, whereby the second guiding member 42 and the returning stroke in the closed state can be prevented. The case where the tab 3 is sandwiched between the upper surfaces of the conveyor 40.

Further, in the case where the second guiding member 42 is in the open state, the pull tab 3 is guided to the downstream side end portion by the fourth guiding member 46 disposed on the downstream side than the second guiding member 42, and is put into To the input port 6 of the part feeder 5. The pull tab 3 is again supplied to the upstream end portion of the supply conveyor 10 via the component feeder 5.

In addition, the present invention is not limited to the above-described embodiments, and can be appropriately modified without departing from the spirit and scope of the invention.

For example, in the above embodiment, a zipper is applied as a conveyed object. The handle 3 to be used is not particularly limited, and any conveyance such as a button, a mechanical part, or a food can be applied.

Further, the measuring device may use a laser speedometer that irradiates a laser beam to the conveyed object and measures the transport speed based on the reflected light.

1‧‧‧Transport screening device

3, 3A, 3B‧‧‧ pull film (transport)

9, 16, 23, 41‧ ‧ slopes

10‧‧‧Supply conveyor (transport conveyor)

11‧‧‧First guiding member

11a, 42a‧‧‧ side

12‧‧‧ One end of the width direction

15‧‧‧ Third guiding member

20‧‧‧Upstream conveyor (transport conveyor)

21, 31‧‧‧ drive motor

22‧‧‧ Passing the sensor

30‧‧‧ downstream conveyor (transport conveyor)

32‧‧‧Measurement device

33‧‧‧ wall members

34‧‧‧ chute

34b‧‧‧ observation window

35‧‧‧1.

36‧‧‧Sensor

39‧‧‧Blowing unit

40‧‧‧Return conveyor

42‧‧‧Second guiding member

43‧‧‧ drive mechanism

44‧‧‧width side of the other side

45‧‧‧ gas supply unit

46‧‧‧fourth guiding member

L‧‧‧Transport distance

Claims (5)

A conveyance screening device (1) includes a conveyance conveyor (30) that conveys a plurality of conveyed objects (3), and a plurality of chutes (34) disposed orthogonal to a conveyance direction of the conveyance conveyor (30) One of the directions is discharged to the conveyance (3) of the same kind; wherein: the conveyance conveyor (30) is inclined downward toward the chute (34) side, and the conveyance conveyor ( 30), a plurality of shutters (35) are disposed on the side of the chute (34), and the plurality of shutters (35) prevent each of the conveyed objects (3) from being discharged to the chute (34) in a closed state And, in the open state, each of the conveyed objects (3) is allowed to be discharged to the chute (34), and is disposed on the upstream side of the transport conveyor (30) than each of the chutes (34). The discriminating device (37) for determining the type of the transported object (3), each of the discriminating devices (37) discriminating the type of the transported object (3), and the transported object (3) is defined In the case of the type, the shutter (35) is opened, and the conveyed object (3) is discharged to the chute (34), and when the conveyed object (3) is other than a predetermined type. ,Make Said stop gate (35) to a closed state, the conveyance (3) to the transfer conveyor (30) conveying the downstream side. The transport object screening device (1) according to claim 1, wherein the transport is detected on the upstream side of the transport conveyor (30) than each of the chutes (34). a sensor (36) that has passed (3), The discrimination device (37) receives the perception of the passage of the conveyance (3) by the sensor (36), and determines the type of the conveyance (3). The transport object screening device (1) according to the first or second aspect of the invention, wherein the chute (34) faces the direction orthogonal to the transport direction of the transport conveyor (30) The other side is provided with a blower unit (39) that moves the conveyed object (3) toward the chute (34) side by blowing compressed air, the discriminating device ( 37) determining the type of the transported object (3), and when the transported object (3) is of a predetermined type, the air blowing unit (39) blows compressed air to the transported object (3) The conveyance (3) is discharged to the chute (34), and when the conveyance (3) is other than a predetermined type, the air blowing unit (39) does not feed the conveyance ( 3) Blow compressed air. The transport object screening device (1) according to any one of the first to third aspect, wherein a return conveyor (40) is connected to a downstream end of the transport conveyor (30). The return conveyor (40) is for returning the conveyed object (3) to the upstream end of the conveying conveyor (30). The transport object screening device (1) according to any one of the above-mentioned claims, wherein the transport object (3) is a pull tab (3) used in a zipper, the pull tab ( 3) perpendicular to the conveying conveyor (30) in its thickness direction The method is transported to the transport conveyor (30).