JPH07172539A - Conveyor device - Google Patents

Abstract

PURPOSE:To lower the height of a conveyor device in which a supporting level for an object to be conveyed in an upper conveying passage can be automatically varied. CONSTITUTION:A conveyor device is provided with plural supporting means, which continuously rotate in the upper conveying passage and the lower returning passage, for an object to be conveyed, and the supporting means for an object to be conveyed consists of a base platform 19, a supporting member 17 for an object to be conveyed, a cross link type pantograph mechanism 18 supporting the supporting member 17 for an object to be conveyed elevatably against the base platform 19, and a driving means 21, which is arranged between the base platform 19 and the supporting member 17 for an object to be conveyed and drives to elevate and lower the pantograph mechanism 18 and is provided with a motor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a plurality of conveyed object supporting means for rotating an upper conveying path and a lower return path in series, and the conveyed object on the conveying path of the conveyed object supporting means. The present invention relates to a conveyor device adapted to automatically change a support level.

[0002]

2. Description of the Related Art As a conveyor device of this type, for example, as described in Japanese Utility Model Publication No. 59-28974, an object to be transferred is provided at an outer end of an elevating member provided at each supported position of the object to be transferred of a slat conveyor. There is known a structure in which a supporting member is supported and a guide roller axially supported by the inner end of the elevating member is engaged with an elevating control guide rail arranged below the conveying path.

[0003]

In the conventional conveyor device as described above, it is necessary to provide the lifting control guide rail with the same level difference as the lifting stroke of the transported object supporting member, and yet to support the transported object. Since the amount of protrusion of the lifting member into the slat conveyor when the member is closest to the slat conveyor is very large, the distance between the upper conveyance path and the lower return path of the slat conveyor must be large. However, there is a drawback that the height of the entire device becomes very large. In addition, even if it is necessary to change the height adjustment position or the adjustment height of the transported object support member on the transport path,
Since it was necessary to change the configuration of the guide rails for raising and lowering control, it could not be carried out easily and easily.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, the features of which will be described with reference numerals of embodiments described later in parentheses. Shown is a conveyor device comprising a plurality of conveyed object supporting means (8) that rotate in a manner connecting the upper conveying path (12) and the lower return path (12). ) Is the base
(19), the transported object support member (17), a cross-link type pantograph mechanism (18) for supporting the transported object support member (17) so that it can be raised and lowered with respect to the base (19), and the base (19 ) And transported object support member
It is characterized in that it comprises a motor-equipped driving means (21) which is located between (17) and drives the pantograph mechanism (18) up and down.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 2, reference numeral 1 denotes a slat conveyor, which is provided between a driving toothed wheel 2 and a driven toothed wheel 3. It is provided with a stretched endless slat assembly 4 and a motor 7 for driving the driving toothed wheel 2 to rotate via a reduction gear 5 and a chain transmission means 6. The endless slat assembly 4 is provided with the transported object support means 8 at appropriate intervals. Reference numeral 9 denotes a transported object receiving work position set at the start end position of the upper transport path 10, and 11 denotes a transported object delivery work position set at the end position of the upper transport path 10. Reference numeral 12 is a guide rail arranged along the lower return path 13.

As shown in FIGS. 1 and 3, the endless slat assembly 4 of the slat conveyor 1 comprises slats 15 provided at equal intervals between a pair of left and right endless roller chains 14. The roller chain 14 is stretched between the driving toothed wheel (left and right pair) 2 and the driven toothed wheel (left and right pair) 3 shown in FIG. It is supported by the pair of left and right chain guide rails 16 and rotates. The transported object support means 8 is provided on each slat 15A at every transported object support pitch, and the transported object support member 17 and the pantograph mechanism 1 are provided.
8 and a base 19. The transported object support member 17 is
It is configured to fit the size and shape of the transported object W to be handled, and in this illustrated example, four transported object supporting portions 17a are provided.

The base 19 is attached to the slat 15A, extends forward and backward in the slat rotation direction, and has an upper transport path 12
In this case, it is supported on a plurality of slats 15 which are separated from the slats 15A in the front-rear direction. The pantograph mechanism 18 supports the transported object support member 17 so as to be capable of moving up and down with respect to the base 19, and includes a pair of left and right cross links 20 and a motor-equipped driving means 21. The pair of left and right cross links 20 are two links 22a and 22b each pivotally attached to an X-shape by a support shaft 23.
The lower end of the link 22b and the upper end of the other link 22b are pivotally supported at fixed positions of the base 19 and the transported object support member 17 by pins 24 and 25, and the upper end of the one link 22a and the other end of the other link 22b. The lower end of the link 22b is the slide guides 26, 2 in the front-rear direction attached to the transported object support member 17 and the base 19.
Guide roller 2 loosely fitted in 7 so as to be rollable in the front-back horizontal direction
8, 29 are pivotally supported. The guide rollers 28 and 29 are rotatably supported by common support shafts 28a and 29a which are provided between the pair of left and right cross links 20 (see FIGS. 3 and 4).

As shown in FIGS. 1, 3 and 4, the motor-equipped driving means 21 is pivotally supported between the pair of left and right cross links 20 concentrically with the central support shaft 23. A pair of left and right screw shafts 30a, 30b extending horizontally at right angles to the support shaft 23, a moving body 31 screwed into the two screw shafts 30a, 30b, and supported on both left and right ends of the moving body 31. Shake the rollers 32a and 32b. Screw shaft 30
The a and 30b are interlockingly connected to a motor 33 via a speed reduction mechanism, and are rotationally driven in the same forward and reverse directions by the motor 33. The rollers 32a and 32b of the moving body 31 which moves back and forth by the forward and reverse rotations of the two screw shafts 30a and 30b are fitted into the horizontally-oriented horizontal corners 34 of the pair of left and right cross links 20. As shown in FIG. 4, each of the rollers 32a and 32b is composed of two rollers that individually come into contact with the links 22a and 22b and that are individually rotatable.

The upper conveyance path 10 has slats 15 and 1
The cable 35 for contactless power feeding on the lower side of the moving path of 5A
A contactless power supply coil unit 36 corresponding to the cable 35 and a control box 37 are attached to the lower side of the slat 15A to which the transported object supporting means 8 is attached. Thus, the motor 33 of the motor-equipped driving means 21 in each of the transported object supporting means 8 is driven by the electric power supplied from the cable 35 through the coil unit 36 in a contactless manner when in the upper side transport path 10. However, the control of the motor 33 can be automatically performed by reading the control code plate or the like arranged at a predetermined position of the upper conveyance path 10 by the reading means on the conveyed object supporting means 8. I can. As shown in FIG. 1 and FIG. 3, a guide roller 38 that engages with the guide rail 13 when moving on the lower return path 12 shown in FIG. It is pivotally supported.

In the conveyor device constructed as described above, when the endless slat assembly 4 is rotated by the driving toothed wheel 2, each object supporting means 8 is moved to the upper conveying path 10.
Transported object receiving work position 9 to transported object delivery work position 1
It moves horizontally to 1, and then circulates so that the lower return path 12 moves in the opposite direction and returns to the transported object receiving work position 9 of the upper transfer path 10 again. Thus, in the transported object supporting means 8 which arrives at the transported object receiving work position 9, the transported object supporting member 17 is at the lower limit position, and the transported object W is transferred onto the transported object supporting member 17. Put it.
After that, the screw shafts 30a and 30b are rotationally driven in the forward direction by the motor 33 of the motor-equipped drive means 21 to move the moving body 31.
By moving the rollers 32a and 32b of the moving body 31 in the direction in which the rollers 32a and 32b of the movable body 31 approach the central support shaft 23 in the horizontally laterally entering corners 34 of the pair of left and right cross links 20, Will be exercised from the prone position to the standing position.

By moving the pair of left and right cross links 20 to the upright posture by the motor-equipped driving means 21 as described above, the object support member 17 supported by the cross links 20 moves upward in parallel. By this action, the transported object W on the transported object supporting member 17 can be raised to an arbitrary level suitable for work. At this time, the guide rollers 28 and 29 of the cross link 20 are
The drive means 21 with a motor rolls in the slide guide 26 on the transported object support member 17 side and the slide guide 27 on the base 19 side in a direction approaching the central support shaft 23, and the central support shaft 23 rises. Move up.

Further, the motor 3 of the motor-equipped driving means 21
The screw shafts 30a and 30b are reversely driven by the moving body 3
By pushing and moving, the rollers 32a and 32b of the moving body 31 move in the direction in which the rollers 32a and 32b of the moving body 31 are separated from the central support shaft 23 in the horizontally laterally entering corner portions 34 of the pair of left and right cross links 20, so that the cross link 20 Moves from the standing posture to the lying posture, and the transported object support member 17 supported by the cross link 20 moves downward in parallel.
By this action, the transferred object W on the transferred object supporting member 17 is
Can be lowered to any level suitable for work. At this time, the guide rollers 28, 2 of the cross link 20
Reference numeral 9 denotes a central support shaft 23 in the slide guide 26 on the side of the transported object support member 17 and the slide guide 27 on the base 19 side.
The motor-equipped driving means 21 rolls in a direction away from the motor.
Moves downward together with the descending central support shaft 23.

When the transported object support means 8 arrives at the transported object delivery work position 11 at the end of the upper transport path 10, the motorized driving means 21 is operated as described above to lower the transported object support member 17. The transported object W may be carried out by lowering it to the limit level. After that, the transported object supporting means 8 enters the lower return path 12, but at this time, the guide roller 38 of the transported object supporting member 17 at the lower limit level enters the guide rail 13 and rolls. The transported object support member 17 of the transported object support means 8 moving on the lower return path 12 moves in the ascending direction away from the base 19 by gravity (in other words, the cross link 20 changes from the lying posture to the standing posture). Movement) can be prevented by the guide rail 13.

The transported object supporting means 8 is provided on one slat 15A, but when moving along the upper transport path 12, a base for supporting the transported object supporting member 17 via the pantograph mechanism 18. 19 is the slat 15
It is stably supported in a horizontal state by A and a plurality of slats 15 located in front of and behind it. In addition, the transported object support member 1 when moving in the reverse direction on the lower return path 12
The height control method of No. 7 is not limited to the method of the above embodiment. In some cases, the transported object support member 17 may be moved by gravity to a position corresponding to the rising limit (the position most distant from the endless slat assembly 4) without forcibly controlling the height. I can.

As in the above embodiment, the lower return path 1
The transported object supporting member 1 of the transported object supporting means 8 moving 2
When holding 7 at the position corresponding to the lower limit (position closest to the endless slat assembly 4), it is possible to use locking means for automatically locking the transported object support member 17 at the position corresponding to the lower limit. For example, as shown in FIGS.
One of the slide guides 27 on the side is provided with a locking device 39 and a spring 40 for holding the locking device 39 in the locking action position.
It is also possible to provide the lock means 42, which is composed of a solenoid 41 that moves the locking tool 39 to the unlocked position against the biasing force of the spring 40. The locking device 39 is
The guide roller of the cross link 20 is pivotally mounted around the vertical support shaft 43, and when the transported object support member 17 reaches the lower limit equivalent position in a state where the solenoid 41 is not excited. 29 is automatically locked to prevent the transported object support member 17 from moving in the ascending direction due to gravity (the cross link 20 standing up).

Accordingly, the transported object support member 17 lowered to the descent limit level at the end of the upper transport path 10 is
Since it is automatically locked by the locking means 42, even if the guided object supporting member 17 is not supported by the guide rail 13, the conveyed object supporting member 17 moving in the lower return path 12 is gravitationally moved in the upward corresponding direction. It can be prevented from descending.
When the conveyed object supporting means 8 enters the upper conveying path 10, the solenoid 41 is excited immediately before the motorized driving means 21 of the pantograph mechanism 18 is operated to move the conveyed object supporting member 17 upward. The locking device 39 may be switched to the locking release position by using.

The cross-link type pantograph mechanism 1
The specific structure of the motor-equipped driving means 21 for moving the motor 8 up and down, the power supply method of the motor-equipped driving means 21 to the motor 33, and the like are not limited to those in the above-described embodiment.

[0018]

As described above, according to the conveyor apparatus of the present invention, the object supporting member for supporting the object can be moved up and down via the cross-link type pantograph mechanism. Since the pantograph mechanism is moved up and down by the driving means with a motor to move up and down the transported object support member, it is not necessary to dispose the up-down control guide rail between the upper transport path and the lower return path. Of course, the elevating member that ascends and descends in conjunction with the transported object support member does not project between the upper and lower paths. Therefore, it is possible to significantly reduce the distance between the upper transport path and the lower return path, and reduce the height of the entire apparatus.

Moreover, since the driven object supporting level of the transferred object supporting means can be arbitrarily changed at any point in the upper transfer path by simply operating the motor-equipped driving means, the transferred object to be handled is handled. Depending on the type and work content, it is possible to always support and carry the object to be conveyed at the most suitable support level.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a main part.

FIG. 2 is a schematic side view showing the entire conveyor device.

FIG. 3 is a vertical sectional front view of a main part.

FIG. 4 is a plan view showing a pantograph mechanism.

5A and 5B show another embodiment, in which FIG. 5A is a vertical sectional side view thereof, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slat conveyor 4 Endless slat assembly 8 Object support means 10 Upper conveyance path 12 Lower return path 13 Guide rail 14 A pair of left and right roller chains 15 Slats 15A Slat 16 with object support means 16 Chain guide rail 17 Transported object support member 18 Cross-link type pantograph mechanism 19 Base 20 Cross-link 21 Drive means with motor 22a Link 22b Link 23 Central support shaft 26 Slide guide 27 Slide guide 28 Guide roller 29 Guide roller 30a Screw shaft 30b Screw shaft 31 Moving body 32a Roller 32b Roller 33 Motor 34 Horizontal side-entry corner of cross link 35 Non-contact power feeding cable 36 Non-contact power feeding coil unit 38 Guide roller 42 Locking means

Claims (2)

[Claims] 1. An upper conveying path (12) and a lower return path (12)
A conveyor device comprising a plurality of conveyed object supporting means (8) which rotate in series, wherein the conveyed object supporting means (8) comprises a base (19) and a conveyed object supporting member (17). ), And a cross-link type pantograph mechanism (18) that supports the object support member (17) so that it can be raised and lowered with respect to the base (19).
And a driving means with a motor for driving the pantograph mechanism (18) up and down between the base (19) and the transported object support member (17)
A conveyor device comprising (21) and. 2. The pantograph mechanism (18) comprises a pair of cross links (20), and the motorized drive means (21) is swingable concentrically with the central support shaft (23) of the cross links (20). And the screw shafts (30a, 30b) extending horizontally at right angles to the central support shaft (23) and capable of rotating in the forward and reverse directions.
(0a, 30b), and a roller (32a, 32b) that is screwed to the movable body (31) and that is pivotally supported by the movable body (31) and that fits into the horizontal side-entry corner (34) of the cross link (20). The conveyor apparatus according to claim 1, further comprising: