JP2015116556A - Selection tray carriage for selection tray conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems for example, in a carriage having a selection tray, in a state that a central part of lateral width has a support shaft, and a carriage boss for being fitted and supported in a state it is laterally rotatable around the support shaft is provided, a rotation state of the carriage boss to the support shaft is easily changed, and correct measurement by a load cell is difficult.SOLUTION: The selection tray conveyor is configured so that: an annular recess part 10 with predetermined width is formed on a boss hole 20 inner peripheral surface of a bearing width central part or on four peripheral surfaces of a support shaft on a carriage boss part 9 for being supported to the support shaft 4 in a laterally rotatable state, and a front and rear both ends of the annular recess part 10 have respectively a bearing surface 11 narrower than width of the annular recess part 10.

Description

  Accurate and stable weight measurement of sorting dishes on sorting tray conveyors that weighs with load cells and sorts and discharges each specified weight category while transporting objects such as vegetables, fruits, and shellfish on a sorting dish. This relates to a sorting tray carriage to be performed.

  While transporting the carriage with the sorting tray, slide the sliders on both the left and right sides to the upper surface of the measuring rail supported by the load cell, measure the weight supported by this measuring rail with the load cell, and discharge it to the sorting position. A sorting tray conveyor technique (see, for example, Patent Document 1) is known.

  JP-A-5-32313

  In the carriage having the sorting tray, a support shaft is provided in the center portion of the left and right widths, and in the form of providing a carriage boss that is fitted and supported around the support shaft so as to be turnable in the left and right directions, the carriage boss is rotated with respect to the support shaft. The dynamic state is easy to change and it is difficult to perform accurate measurement with a load cell. Due to long-term use, a part of the bearing part wears out, foreign matter or dust intervenes in the bearing interference part of the fitting part between the support shaft and the carriage boss, and this intervening dust condenses, The solidification or the like makes it difficult for the carriage to turn smoothly from side to side, and causes carriage vibration and swinging, making it difficult to maintain accurate measurement.

According to the first aspect of the present invention, a carriage 2 having a sorting tray 1 that can be turned to the outer side is supported by a transport chain 3 around a support shaft 4 that extends in the front-rear direction. The carriage 2 is provided with sliders 6 that are slidably supported on the upper surface of the measurement rail 5, and the carriage 2 is provided with the sliders 6 on both the left and right sides, the guide rails 7 on the conveyance path, and the measurement rails. 5. A sorting tray conveyor that measures the weight slidably supported on the upper surfaces of the left and right measuring rails 5 with the load cell 8 and measures the weight of the object to be sorted on the sorting tray 1 while weighing it. In
The carriage boss 9 that supports the support shaft 4 so as to be pivotable to the left and right is mounted on the inner peripheral surface of the boss hole 20 (see FIG. 4) or the peripheral surface of the support shaft 4 (see FIG. 5). A sorting tray carriage for a sorting tray conveyor, wherein an annular recess 10 having a predetermined width is formed, and bearing surfaces 11 narrower than the width of the annular recess 10 are formed at both front and rear ends of the annular recess 10. The configuration is as follows.

The transport chain 3 of the sorting tray conveyor 15 is driven and rotated to transport the carriage 2 supporting each sorting tray 1 to the front F. In the start-end side supply process A of the sorting tray conveyor 15, the sorting object is fed and placed on the sorting tray 1 in a horizontal posture on each carriage 2 from the feeding belt 35 disposed on the upper side.
The slider 6 of the sorting tray 1 carriage 2 on which the object to be sorted is placed is transferred from the guide rail 7 in the supply stroke A to the upper surface of the measurement rail 5 in the measurement stroke B and conveyed to the front F. While the slider 6 of the carriage 2 slides on the upper surface of the measurement rail 5, the weight of the object to be sorted on the carriage 2 that is slidably supported on the measurement rail 5 and the sorting tray 1 is measured on both the left and right sides. It is measured by the load cell 8 supporting the rail 5.

  The carriage 2 having the slider 6 supported by the measurement rail 5 is connected to and supported by the mounting bracket 17 of the transport chain 3 through a parallel link 39 so as to be swingable up and down. In this state, the slider 6 on both sides of the carriage 2 that supports the sorting tray 1 is supported by the measurement rail 5 and is measured by the load cell 8.

  Even when the accommodation form in which such an object to be sorted is placed on the sorting dish 1 is, for example, a placement state in which the sorting object 1 is shifted to the left and right sides with respect to the sorting dish 1, the carriage 2 is moved together with the sorting dish 1. In this state, the support shaft 4 is pivoted toward the displacement side, and the engagement position between the guide pin 32 of the mounting bracket 17 and the engagement hole 38 of the carriage 2 is left and right or up and down. Even if there is a form in which it deviates and swings, such a weighing load is received from each of the left and right sliders 6 by each measurement rail 5 immediately below the same side, and this is measured by the load cell 8. Even in such a form in which the measurement weight ratios to the left and right measurement rails 5 are different, the left and right branches via the left and right sliders 6 and the measurement rails 5 by the smooth left and right rotation around the support shaft 4 of the carriage 3. The weight measured and linked to the form is aggregated and measured by the load cell 8. Moreover, since the annular recess 10 is formed between the support shaft 4 and the boss hole 20 of the carriage boss 9 fitted to the outer peripheral surface, the bearing surface 11 is interposed via the annular recess 10. It is formed at a position separated from the front end portion and the rear end portion of the carriage boss 9, and maintains a stable rotation state by maintaining the bearing fitting state of the front and rear end support forms in a constant tight state at all times. To do.

  Further, even if foreign matter, dust, or the like intervenes in the bearing surface 11 during the conveyance measurement by the carriage 2, the width of the bearing surface 11 is narrow, so that the speed is increased to the annular recess 10 in the central portion and the front and rear outer end portions. The crab is extruded and discharged. Since the width of each of the front and rear bearing surfaces 11 is narrow, the bearing support on the bearing surfaces 11 at both front and rear ends of the boss hole 20 is always maintained, and the carriage boss 9 is supported on the support shaft 4 portion. A stable bearing support posture is maintained by bearing support in the form of a cantilever at the front and rear ends, which is difficult to perform center swing swing, tilt swing, rattling or tilting.

  As shown in FIG. 4, the annular recess 10 is formed in the shape of a ring groove having an appropriate depth and width on the inner peripheral surface of the boss hole 20 of the carriage boss 9, or as shown in FIG. 2 is formed on the peripheral surface of the support shaft 4 at the center portion of the bearing width, and at both front and rear ends of the annular recess 10, The bearing surface 11 narrower than the width of the annular recess 10 may be formed on the peripheral surface of the support shaft 4.

  Accordingly, the slider 6 of the carriage 2 that supports the sorting tray 1 moves up and down while sliding on the measurement rail 5 or rotates in the left-right direction with respect to the support shaft 4, thereby supporting the measurement rail 5. The weights of the sorting tray 1 and the sorting objects of the sorting tray 1 are measured by the load cell 8 in the same manner as described above. This rotation of the carriage 2 with respect to the support shaft 4 is a smooth and stable bearing as a bearing form for supporting both ends of the bearing surface 11 formed on both front and rear sides of the annular recess 10 on the circumferential surface of the support shaft 4. Maintained in form. Further, when dust is intervened in the bearing portion during such transport and measurement of the carriage 2, the dust is pushed into the annular recess 10 from the bearing surface 11 portion of the peripheral surface of the support shaft 4, or outside the bearing surface 11. In the same manner as in the form formed on the inner peripheral surface side of the boss hole 20, smooth bearings on the bearing surfaces 11 at the front and rear ends of the annular recess 10 are maintained.

According to the first aspect of the present invention, in the fitting bearing portion of the carriage boss 9 with respect to the support shaft 4 of the shaft bracket 30, the inner peripheral surface of the boss hole 20 at the center portion of the bearing width or the peripheral surface of the support shaft 4 Since the annular recess 10 is formed and the narrow bearing surfaces 11 are formed at the front and rear ends of the annular recess 10, the carriage 2 boss 9 can be smoothly rotated around the support shaft 11. It is possible to reduce the tilting and swinging of the carriage 2 in the axial direction and the rotation resistance around the support shaft 11 to reduce the fluctuation of the measurement load on the load cell 8, thereby stabilizing accurate and highly accurate weighing. Can be done. Further, since the annular recess 10 having an appropriate depth and width is formed in the center portion of the front and rear width of the support shaft 4, the configuration can be simplified and simplified. Foreign matter and dust that enter 11 parts can be quickly released to the annular recess 10 in the central part and the outer end part of the bearing surface 11, and can always be maintained on the clean bearing surface 11 for accurate weighing. Can be maintained. In addition, by removing the carriage boss 9 from the support shaft 4, cleaning maintenance of the annular recess 10 can be performed easily and easily. In particular, the carriage 2, the support shaft 4 and the like are often formed mainly of a synthetic resin material, but in this embodiment as well, damage and clogging of the bearing surface 11 can be reduced, and the smooth carriage 2 can be prevented. The rotation support state can be maintained.
Further, in the form in which the annular recess 10 is formed on the inner peripheral surface of the carriage boss 9, the annular recess 10 is not formed on the support shaft 4 side, but is formed in a simple round bar form. Although it is possible, in such a configuration, the configuration can be further simplified, the carriage 9 can be easily fitted and removed from the outer peripheral portion, and the maintenance can be facilitated.

  Partial plan view (A), (B) and partial side view (C) of the sorting tray conveyor.   The enlarged rear view of the sorting tray conveyor part.   The rear view (A), bottom view (B), and side view (C) of the carriage boss part.   The side view which carries out a partial cross section of the carriage boss part.   The side view which shows another Example of the carriage boss | hub part.   The arrangement | positioning top view (A) of the measurement rail part, and the one part enlarged side view (B).

  On the basis of the drawing, the sorting tray conveyor 15 has a fan-shaped carriage 2 in a front view in which the sorting tray 1 is mounted on the transport chain 3 that is spanned between the front and rear sprockets 60 on the conveyor frame 16. Attach and place the sorting tray 1 in an endless belt-like form, and drive and rotate it with an electric motor. Under the weighing action, the sorting dish 1 is tumbled and discharged while being transported to a designated sorting position based on this weighing, and the sorting action of the object to be sorted is performed. The carriage 2 is supported by a carriage boss 9 positioned at the fan-shaped main portion so as to be rotatable in the left-right direction around a support shaft 4 of a mounting portion with respect to the transport chain 3. 1 is supported around the support pin 29 so as to be rotatable to the side of the conveyance direction path. Further, the carriage 2 supports the sorting dish 1 on which the object to be sorted is placed in a horizontal horizontal posture, and the measuring process for measuring the weight of the sorting dish 1 from the supply process A in which the object to be sorted is placed on the sorting dish 1. After passing through B, the sorting tray 1 is turned over to the side, and conveyed through a sorting process C for discharging the sorting object to the sorting position.

Regarding the mounting structure of the support shaft 4, the carriage 2, the sorting tray 1, and the like are formed and configured mainly using a hard synthetic resin material, and are mounted on the chain link 61 or the link pin 62 of the transport chain 3. A mounting bracket 17 is detachably provided on the chain bracket 26, and a pair of upper and lower parallel links 39 project rearward on both left and right sides of the mounting bracket 17, and are provided so as to be rotatable up and down around the link pin 18.
The upper and lower end portions of the shaft bracket 30 having the support shaft 4 are pivotally connected to the rear end portions of the parallel links 39 by link pins 19, and the support shaft 4 and the shaft bracket 30 are connected to the chain 3. It is configured to be swingable up and down in a parallel form with respect to the side mounting bracket 17.

  The support shaft 4 is formed so as to protrude horizontally toward the rear side of the shaft bracket 30, and the carriage 2 that is rotatable to the left and right around the support shaft 4 is fitted and supported by a carriage boss 9. The support shaft 4 is formed with an annular recess 10 having an appropriate depth and width on the outer peripheral surface (FIG. 5), and bearing surfaces 11 are formed at both front and rear ends of the annular recess 10, and these front, rear The inner peripheral surface 21 of the boss hole 20 of the carriage boss 9 of the carriage 2 is rotatably fitted to the outer periphery of the bearing surface 11 at both ends to be supported. The front and rear end surfaces of the carriage boss 9 fitted to the outer peripheral portion of the support shaft 4 are opposed to the shaft shoulder portion 22 of the shaft bracket 30 and the retaining disk 23 attached to the end portion of the support shaft 4 by tightening bolts 24. Provided and supported between the shaft bracket 30 and the retaining disk 23 so as to be rotatable around the support shaft 4.

  Instead of forming the annular recess 10 on the bearing outer peripheral surface of the support shaft 4 (FIG. 5), the annular recess 10 is formed on the inner peripheral surface of the boss hole 20 on the carriage boss 9 side as shown in FIG. The support shaft 4 is fitted to the front and rear end portions of the annular recess 10 on the inner periphery, the front and rear end bearing surfaces 11 are formed, and the support shaft 4 is supported at both ends by the front and rear bearing surfaces 11. It is also configured.

  The carriage 2 has a shape in which the upper peripheral portion extends in a fan shape centered on the carriage boss 9 on both the left and right sides, and sliders 6 that support and slide on the upper surface of the measurement rail 5 are provided at both left and right ends. ,. A cam follower 63 is formed so as to protrude from the upper outer position of the slider 6. The sorting tray 1 is supported at the upper end of the carriage 2 so as to be able to turn and rotate to the laterally outer side around the support pins 29 at the bottom of the left and right sides. The sorting tray 1 is formed in a funnel shape by forming a discharge port 27 on the overturning rotation side, and can smoothly and accurately carry out the overturning discharge of the object to be sorted that has been accommodated and supported. In addition, when the carriage 2 is in a horizontal conveying posture, the bottom bottom surface is supported on the center upper portion of the carriage 2 to perform stable conveyance.

  In addition, an arcuate guide hole 31 for fitting a guide pin 32 protruding rearward from the upper end of the mounting bracket 17 is formed in the upper portion of the carriage 2, and the support shaft 4 around the carriage 2 is formed. It is set as the form which regulates the right-and-left rotation angle. Further, an engaging hole 38 is formed at the upper end of the guide hole 31 so as to be partitioned by a guide protrusion 34 projecting downward, and the guide pin 32 is fitted and guided into the guide hole 31 to rotate. When the moving carriage 2 is released from the lifted state by the guide rail 7 of the slider 6 or the measurement rail 5, the guide protrusion 34 of the guide hole 31 is brought to the transport posture position immediately above the support shaft 27. Gets over the guide pin 32 and is fitted into the upper end edge 64 of the engagement hole 38 so that the carriage 2 is supported by the guide pin 32 portion. In the support state of the carriage 2 by the guide pins 32 and the lower support shaft 4, the sorting tray 1 is stabilized in the horizontal and horizontal transport posture position in the forward stroke from the feeding stroke A to the sorting stroke C of the sorting tray conveyor 15. It can be supported and transported.

Therefore, in the embodiment in which the weight of one part of the sorting tray is measured through the slide of the carriage 2 by the measurement rail 5, the slider 6 is supported by the measurement rail 5, the carriage 2 is lifted, and the guide pin 32 is used. The engagement hole 38 is suspended in a suspended state. At this time, the carriage 2 is movable up and down with respect to the guide pin 32 between the upper and lower end edges 64 and 65 of the engagement hole 38, thereby reducing the frictional resistance associated with the measurement. In this state, the weight of the carriage 2 on which the object to be sorted is placed, the sorting dish 1 and the like are measured.
Further, the carriage in the supply stroke A and the sorting stroke C is carried in a form in which the carriage 2 is lowered and the upper end edge 64 of the engagement hole 38 is engaged and supported by the guide pin 32.
In the backward stroke of transporting from the end portion to the start end portion of the sorting tray conveyor 15, the carriage 2, the sorting tray 1 and the like are in a suspended posture in an inverted state, and the lower end of the engagement hole 38 of the carriage 2 The edge 65 is engaged with the guide pin 32 and is conveyed while maintaining the suspended posture.

In the carriage 2, when the left and right sliders 6 are pushed up by the guide rail 7 in the measurement stroke B portion or the measurement rail 5, the upper edge 64 of the engagement hole 38 at the upper end portion of the guide hole 31 of the carriage 2 is formed. The guide pin 32 is lifted above the guide pin 32 and disengaged from the guide pin 32 to guide the tilt rotation of the carriage 2 toward the sorting and discharging side of the guide hole 31.
Further, the lower end edge 65 of the engagement hole 38 is formed slightly lower than the lower edge of the guide hole 31 so that the guide pin 32 can be engaged. In the return stroke from the end of the sorting stroke C to the supply stroke A by the engagement of the lower end edge 65 of the engagement hole 38 of the carriage 2 with the guide pins 32, the carriage 2, the sorting tray 1, etc. The carriage 2 in the suspended form is suspended by engaging the lower end garden 65 of the engagement hole 38 with the guide pin 32 of the attachment bracket 17. Can be maintained, and the carriage 2 can be maintained in a stable conveying posture.

  The carriage blade 42 that protrudes to the left and right sides of the carriage 2 is provided with the slider 6 and the cam follower 63, and the upper surface of the guide rail 37, the measuring rail 5, or the sorting rail is slid and conveyed. invite. Further, a discharge cam 47 that operates to scoop up the cam follower 63 of the carriage 2 is arranged on one side and the sorting discharge side of the sorting step C, and the object to be sorted of the sorting tray 1 to be weighed and transported is designated. In this configuration, the sorting position 49 is overturned and discharged.

  The guide rail 7 for guiding the carriage 2, the measurement rail 5, the discharge cam 47, the sorting rail, and the like are provided on the conveyor frame 16 along the lateral side and the left and right sides of the carriage 2. . A guide rail 7 is provided at the start end of the sorting conveyor 15 from the end position of the supply stroke A to the start end of the measurement stroke B, and the measurement rail 5 is provided at the measurement stroke B located at the subsequent portion. The same guide rail 7 as described above is arranged and arranged from the end position of the measurement process B to the start position of the selection process C in which the selection dish 1 is turned over. In addition, sliders 41 having an inverted U-shaped cross section are formed on both left and right sides of the transport path of the chain bracket 26 attached to the transport chain 3, and the sliders 41 are connected to the left and right side conveyor frames of the transport chain 3. The guide rail 37 provided on 16 is fitted and supported on the upper edge of the guide rail 37, and is guided for transfer over the entire length of the sorting tray conveyor 15 from the start end to the end.

  The carriage 2 supported by the measurement rail 5 and the load cell 8 for measuring the weight of the sorting tray 1 on which the object to be sorted is placed are provided at the start end of the conveyor frame 16 and both ends of the measuring shaft 43 projecting to the left and right sides. A support bracket 44 is provided at the portion, and the measurement rail 5 is attached and supported on the support bracket 44. The weight acting on the load cell 8 is measured by slidingly supporting the sliders 6 on the left and right sides of the carriage 2 that supports the sorting tray 1 on the upper surfaces of the pair of left and right measuring rails 5. Is electronically input to the controller 45.

  A guide rail 7 is provided on the conveyor frame 16 on the upper side of the measurement rail 5 (starting end side of the sorting conveyor 15). The guide rail 7 is inclined at the start end to facilitate scooping up the slider 6 of the carriage 2 transferred from the start end of the sorting conveyor 15 to the measurement rail 5 side, and smoothly slides on the upper surface of the measurement rail 5. invite. A guide rail 7 is also provided on the lower position of the measurement rail 5 so as to be supported by the conveyor frame 16. The end portion of the guide rail 7 is formed on a downwardly inclined surface, and the guide rail 7 is sequentially guided downward to the transport posture position of the carriage 2.

  The measurement rail 5 is at the same height as the front and rear guide rails 7, and slides and guides the slider 6 of the carriage 2 supporting the upper side to the front F in a horizontal posture. The guide rails 7 and the measurement rails 5 are formed to have a constant rail width d, and slidably support the lower end surface of the slider 6 formed in a warped shape. A connecting interval 12 is appropriately formed between the rail edge 13 at the front and rear ends of the measurement rail 5 and the rail edge 14 facing the guide rail 7. These are formed parallel to each other so as to be inclined α toward the side in plan view with respect to the transport direction F. The inclination α directions of the rail edges 13 and 14 in the measurement rail 5 on both the left and right side portions and the guide rail 7 portion are formed in the same shape in the left and right in the illustrated example. It can also be formed into a shape.

  In the sorting step C located on the lower side of the guide rail 7, a cam follower located on the opposite side of the carriage 2 from the falling side from the carrying posture in which the sorting plate 1 is supported in a horizontal horizontal posture on the carriage 2. 63 is scooped up by the rotation of the discharge cam 47, and the carriage 2 is rotated around the support shaft 4 in an outward direction. The discharge cam 47 is arranged at each sorting position, and the discharge cam 47 at the sorting position is rotated by an output from the controller 45, and the carriage 2 conveyed to the sorting position of the discharge cam 47 is moved outward. In addition, the sorting tray 1 on the carriage 2 is turned over and rotated around the support pin 29 so that the object to be sorted on the sorting tray 1 is discharged to the sorting position 49. Further, on the lower side of each of the discharge cams 47, a sorting rail can be provided for rotating the carriage 2 that has been turned and turned back to the discharge posture position, or for maintaining the carriage 2 in a predetermined transport posture position. .

DESCRIPTION OF SYMBOLS 1 Sorting plate 2 Carriage 3 Carrying chain 4 Support shaft 5 Measuring rail 6 Slider 7 Guide rail 8 Load cell 9 Carriage boss 10 Annular recessed part 11 Bearing surface 15 Sorting conveyor 17 Mounting bracket 20 Boss hole 30 Shaft bracket 39 Parallel link

Claims (1)

A carriage 2 having a sorting tray 1 that can be turned to the outside is provided to be supported around a support shaft 4 along the front-rear direction with respect to the transport chain 3 so as to be able to turn left and right. The slider 6 is slidably supported on the upper surface of the measurement rail 5, and the carriage 2 is transported by sliding the sliders 6 on both the left and right sides on the guide rail 7 and the upper surface of the measurement rail 5. On the other hand, in the sorting tray conveyor for measuring the weight slidably supported on the upper surfaces of the left and right measuring rails 5 with the load cell 8 and sorting while weighing the object to be sorted in the sorting tray 1,
An annular recess 10 having a predetermined width is formed on the inner peripheral surface of the boss hole 20 at the center of the bearing width or on the peripheral surface of the support shaft 4 in the carriage boss 9 which supports the support shaft 4 so as to be pivotable to the left and right. A sorting tray carriage for a sorting tray conveyor, wherein bearing surfaces 11 narrower than the width of the annular recess 10 are formed at both front and rear ends of the annular recess 10.

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