JPH039957Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a conveying pallet for conveying articles, such as cathode ray tubes, which are relatively heavy and have a vertically and horizontally symmetrical planar shape, such as cathode ray tubes.

[Prior Art] In cathode ray tube manufacturing factories, finished cathode ray tube products or cathode ray tube panels are placed one by one on a transport pallet and transported between work stations using roller conveyors, etc. Since the cathode ray tube panel faces downward, the pallet is provided with a seat corresponding to the size of the panel. For items with large dimensional differences between sizes, such as large cathode ray tubes, special pallets for each size with seats fixed at predetermined intervals are used. For small ones,
A common pallet is used which can be used in common for two or more sizes and has a plurality of stepped seats.

[Problems to be solved by the invention] However, in such conventional pallets with stepped seats, there is a gap between the seats and the edge of the cathode ray tube panel supported. Since the cathode ray tube is simply placed on the receiving seat, it is likely that the cathode ray tube will shift or vibrate during transportation, resulting in surface scratches on the surface of the panel that contacts the receiving seat. Each work station also requires a device for positioning the cathode ray tube. Furthermore, especially in the case of a shared pallet, a stepped seat is required for each size of cathode ray tube, making the pallet structure complicated.

Therefore, an object of the present invention is to provide a conveying pallet that can hold conveyed articles in a predetermined position without causing any displacement, and can convey articles of various sizes using a common pallet. be.

[Means for Solving the Problems] In order to achieve this object, the conveying pallet of the present invention has one side edge of the conveyed object at the edge of two opposing sides of a substantially rectangular base. A conveying pallet having a holding jig for holding the object, and a guide plate for guiding and placing the other side edge of the conveyed object on the other two opposing edges of the base, The jig includes a rotating shaft that extends horizontally along the edge of the base, and two arms that are pivotally supported by the rotating shaft and extend in a substantially perpendicular direction in the same plane as the conveyance object loading direction. A receiving member provided at the tip of one arm to support the bottom surface of the side edge of the transported object, a presser member provided at the end of the other arm to press the side surface of the transported object, and a support member provided at the tip of the other arm to press the side surface of the transported object, and a biasing member that always biases the arm into an upright state. It is equipped with means of force.

[Operation] When the conveyed object descends into the pallet from above, the conveyed object passes between the opposing press members of the holding jig in the upright state, and its bottom surface abuts on the receiving member. As the object to be transported further descends, this receiving member is pressed downward, causing the holding jig to rotate around the rotation axis, thereby bringing the pressing member of the holding jig into contact with the side surface of the object to be transported. During this time, the center of the conveyed object is moved to the center of the pallet by the pressure of both opposing presser members, and then its both side edges are held between the presser and receiver members. Note that when the size of the conveyed object differs, the holding jig is rotated to a rotation angle corresponding to the size.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIGS. 1 to 3, the pallet for conveyance has objects G ( For example, a holding jig 2 for holding one side edge Ga of a cathode ray tube) is provided,
A guide plate 3 for guiding and placing the other side edge Gb of the cathode ray tube G is provided on the other two opposing edges. As shown in an enlarged view in FIG. 4, the holding jig 2 includes a rotating shaft 4, two arms 5a and 5b pivotally supported by the rotating shaft 4, and a receiver attached to the tip of the arm 5a. member 6, a pressing member 7 attached to the tip of the other arm 5b, and biasing means 8.
and a stopper device 9.

The holding jig 2 will be explained in detail below. A holding jig support 2a is bolted to an end of one frame 1b of the base 1. Holding jig support stand 2
Both shaft ends 4b of the rotating shaft 4 are rotatably supported by a bracket 4a erected on the base 1, and are horizontally suspended along the edge of the base 1. two arms 5a,
5b is a common boss portion 5c fixed to the rotating shaft 4
It extends in a direction substantially perpendicular to the loading direction of the cathode ray tube G in the same plane. The receiving member 6 and the holding member 7 are made of a smooth elastic body, such as synthetic rubber, and are attached to the tips of the arms 5a and 5b, respectively, via attachment washers. The biasing means 8 includes a support plate 8a attached to a sleeve 4c fixed to the rotating shaft 4 so as to face the base 1 outward.
and the holding jig support base 2a facing the support plate 8a, mounting brackets 8b, 8 are provided, respectively.
It is composed of a tension spring 8d that is tensioned through a spring 8c. The stopper device 9 includes a stopper plate 9a attached to the sleeve 4c facing outward from the base 1, a Z-shaped bracket 9b one piece of which is fixed to the support base 2a, and the bracket 9b parallel to the base 1. The adjusting nut 9 is inserted through a through hole (not shown) provided at the end of the other piece.
Screw stopper 9 that moves forward and backward in the vertical direction via c
It is composed of d.

Further, the guide plate 3 is attached to a bracket 3 on a guide plate support 3a bolted to the end of the base frame 1c.
b, and is made of a relatively soft elastic body, such as a sponge, and is formed into a wedge shape with the surface facing the loaded cathode ray tube G bulging downward.

Next, a case will be described in which a cathode ray tube is placed on the conveyance pallet of the present invention having such a structure.

When placing the tube, first, the holding jig 2 is installed in accordance with the size and weight of the cathode ray tube G to be placed.
The biasing means 8 and the stopper device 9 are adjusted. That is, the tension spring 8 of the biasing means 8
d is selected, and the supporting force of the receiving member 6, which is applied to the receiving member 6 by the tension spring 8d via the rotating shaft 4 and the arm 5a, is set to a strength that can sufficiently support the weight of the cathode ray tube G. Further, the screw stopper 9d of the stopper device 9 is moved back and forth via the adjustment nut, the arm 5b is held in an upright state via the stopper plate 8a and the rotating shaft 4, and the distance between the two holding members 7, 7 is adjusted by adjusting the cathode ray tube. Set the dimensions to be sufficiently larger than the size of G.

Next, the cathode ray tube is lowered and placed in the pallet adjusted in this way (see Fig. 5), but in this case, even if there is a misalignment La between the cathode ray tube G and the pallet, or Even if the cathode ray tube G is inclined as shown by the two-dot chain line, there is a sufficient distance between the holding members 7, 7, so that the cathode ray tube G passes between the holding members 7, 7, Then, the panel surface Gc of the left side edge Ga is brought into contact with the left receiving member 6 of the holding jig 2. In this state, the right receiving member 6 and both presser members 7, 7 are not in contact with the cathode ray tube G. Next, as shown in Figure 6, as the cathode ray tube G is further lowered, the cathode ray tube panel surface
The left receiving member 6 in contact with Gc is pressed downward by the weight of the cathode ray tube, thereby rotating the arms 5a and 5b, and the holding member 7 attached to the tip of the arm 5b is pressed against the cathode ray tube panel. Contacts the side Gd. Then, as the cathode ray tube G is further lowered, the left receiving member 6 is further rotated in the toward direction, and the presser member 7 is further rotated and protruded.
A pressing force F is applied to the side surface Gd of the panel. As a result, the cathode ray tube G moves to the right, and the lateral misalignment Lb is reduced. On the other hand, the right receiving member 6 also comes into contact with the panel surface Gc. Note that in the illustrated state, the right pressing member 7 is not yet in contact with the cathode ray tube G. Next, when the cathode ray tube G is further lowered, as shown in FIG.
The pressing force F of 7 moves the pallet to the center and eliminates the lateral misalignment. At the same time, both side edges G of the cathode ray tube are held between the holding member 7 and the receiving member 6, and the cathode ray tube G is reliably held in the holding jig 2 without any displacement or vibration.

On the other hand, while one side edge Ga of the cathode ray tube G is held between the holding jig 2 in this way,
The other peripheral edge Gb of the cathode ray tube G is guided along the inclined surface of the guide plate 3, as shown in FIG. 3, so that the vertical center of the cathode ray tube G is positioned approximately at the center of the pallet. At this time, if the bracket 3b that supports the guide plate 3 is made movable and the gap between both guide plates 3 is adjusted according to the size of the cathode ray tube G, the centers of the cathode ray tube and the pallet can be aligned accurately. I can do it.

FIG. 8 shows another embodiment in which a support plate is added to support the bottom surface of the central part of the conveyed object. That is, a support arm 11 is pivotally supported via a coupling 10 that transmits rotation by a certain angle to the horizontal rotating shaft 4, and a smooth elastic body such as a synthetic rubber plate is pasted on the top surface of the tip of the support arm 11. The support plate 12 is freely supported via a pivot pin. The height position of this support plate 12 is set to approximately the same height position as the receiving member 6 at the angular position of the rotating shaft 4 when the holding jig 2 is in the upright state, and approximately to the floor level of the base 1 at the rotation limit angular position of the coupling 10. It is set to be located at the location. In this way, when the cathode ray tube G is placed on the pallet, the central part Ge of the panel surface of the cathode ray tube G is first supported on the support plate 12 (FIG. 8), and then the cathode ray tube G is placed on the receiving member of the holding jig 2. 6 and the holding member (FIG. 9), there is an advantage that the cathode ray tube G can be placed stably and smoothly.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications and modifications can be devised. For example, hydraulic pressure or pneumatic pressure may be used as the biasing means for the holding jig.

[Effects of the invention] As explained above, the conveying pallet of the present invention has holding jigs for holding both side edges of the conveyed object disposed at the opposite end edges of the pallet, and this holding jig. By supporting the jig so that it can rotate under the weight of the conveyed object on which it is placed, the conveyed object can be positioned at the center of the pallet regardless of the size of the conveyed object,
Moreover, since it is constructed so that it can be held securely, it is possible to prevent the conveyed articles from shifting or vibrating during conveyance, which could not be avoided with conventional pallets with stepped seats. Therefore, the transported object will not be damaged, and a positioning device for the transported object at each work station can be made unnecessary. Furthermore, the palette according to the present invention is
Unlike conventional pallets, it does not require multiple stepped receiving seats, so the structure is simple and it can be used not only for conveying objects with large dimensional differences, but also for conveying many sizes of objects with extremely small dimensional differences. be able to.

[Brief explanation of drawings]

Fig. 1 is a plan view of a conveying pallet according to the present invention, Fig. 2 is a side view taken along the - line in Fig. 1,
Figure 3 is a side view taken along the - line in Figure 1;
The figure is a perspective view of the holding jig in Figure 1, 5th to 7th
The figure is a schematic side view for explaining the situation in which objects are placed on the conveying pallet of the present invention, FIG. 8 is a side view of another embodiment, and FIG. 9 is a side view of the conveying pallet shown in FIG. 8. FIG. 3 is a schematic side view for explaining a situation in which an object to be transported is placed. DESCRIPTION OF SYMBOLS 1... Base, 2... Holding jig, 3... Guide plate, 4... Rotating shaft, 5a, 5b... Arm, 6...
...receiving member, 7...pressing member, 8...biasing means,
8d... tension spring, 9... stopper device, 9d... screw stopper, 10... coupling ring, 11... support arm, 12... support plate, G...
...Conveyed object (cathode ray tube), Ga, Gb...side edge,
Gc...Panel surface, Gd...Panel side, Ge...Center of panel surface.

Claims (1)

[Claims for Utility Model Registration] 1. A holding jig for holding one side edge of the conveyed object is provided at the end edges of two opposing sides of a substantially rectangular base; The conveying pallet is provided with a guide plate for guiding and placing the other side edge of the conveyed object on the edge of the side, and each of the holding jigs has a rotating shaft horizontally suspended along the edge of the base. , two arms that are pivotally supported on the rotating shaft and extend in a substantially perpendicular direction in the same plane as the direction in which the transported object is loaded, and a bottom surface support for the side edge of the transported object provided at the tip of one of the arms. A pallet for conveyance, which has a receiving member for holding the object, a pressing member provided at the tip of the other arm for pressing the side surface of the conveyed object, and a biasing means for always biasing the arm in an upright state. 2. The guide plate is a wedge-shaped plate that bulges downward in the loading direction of the conveyed object, and is attached to a bracket vertically erected on the edge of the base. Palette. 3. The conveying pallet is equipped with a support plate that supports the bottom surface of the central part of the conveyed object through a support arm pivotally supported by a coupling that transmits rotation by a certain angle to the horizontal rotating shaft. A pallet for transportation according to scope 1.