JPH0623391Y2 - Rotating pallet - Google Patents

Description

TECHNICAL FIELD The present invention relates to a pallet that is conveyed by a conveyor and used in, for example, an assembly line of various electric products.

Conventional technology and its problems Conventionally, since the pallet that is conveyed and used by the conveyor is a single plate, it is difficult to work on the opposite side (opposite side) of the work. There was a problem that workers had to be assigned.

Also, the lower surface side of the work was blocked by the pallet and it was impossible to work.

MEANS FOR SOLVING PROBLEMS AND ACTION The present invention relates to a first pallet, a second pallet rotatably provided on an upper part of the first pallet for mounting a work, and a rotation of the second pallet. The above problem is solved by a rotary pallet having a rotation restricting means for restricting, and concentric holes are bored in the first and second pallets respectively so that the centers thereof coincide with the rotation center of the second pallet. When working on the opposite side of the work, the second pallet may be rotated to bring it to the front side of the worker.

Also, when it is necessary to work from the bottom side of the work,
Since holes are formed in each pallet, it is possible to insert a tool, a jig, or the like through the holes to perform work.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The rotary pallet 10 is mainly composed of a first pallet 11, a second pallet 12, a rotary support means 13 for rotatably supporting the second pallet 12 with respect to the first pallet 11, and a second pallet.
The rotation regulating means 14 for regulating the rotation of the pallet 12 of FIG.

The first pallet 11 is a portion to be placed on the conveyor, and is composed of a substantially rectangular flat plate 20 having a hole 21 in the center.

The second pallet 12 is rotatably supported by the first pallet 11 by a rotation supporting means 13 which will be described later. As with the first pallet 11, the second pallet 12 is composed of a substantially rectangular flat plate 30 and has a hole 31 at the center. Has been drilled. The hole 31 and the hole 21 are concentric circles with the center of rotation of the second pallet 12 as the center (“L” in FIG. 1), and the hole 31 has a larger diameter.
At four corners of the upper surface 30a, a support member 32 made of resin for supporting the work, for example, the cathode ray tube B is provided. Support member 3
Each of 2 is a stair-like mounting surface 33 on which the work is set inside.
Is formed. Of the four support members 32, two support members 32a and 32b at diagonal positions are inserted with a pin P (FIG. 3) when the work is automatically transferred onto the pallet from the outside. Each locator hole 34 is formed to determine the exact rest position of the pallet 12.

The rotation supporting means 13 is the flat plate 3 of the second pallet 12.
Of the flat plate 20 of the first pallet 11 at 120 ° intervals at the periphery of the hole 21 and the rotation guide 40 formed of a ring having a U-shaped cross section provided on the lower surface 30b of the hole 31. The upper surface 20a includes three rotation support rollers 41, a rotation guide roller 42, and a slip-off prevention member 43.

The rotation support roller 41 is located on the outer periphery of the rotation guide 40, contacts the lower surface 30b of the flat plate 30 of the second pallet 12, and supports the rotation of the second pallet 12. The rotation guide roller 42 is in contact with the inner circumference 40a of the rotation guide 40 and rotates and guides the second pallet 12 around the rotation center "L". The slip-out preventing member 43 is engaged with the rotation guide 40 from the outside and prevents the second pallet 12 from separating upward from the first pallet 11.

The rotation restricting means 14 includes a plurality of cutout recesses 50 formed in the lower surface 40a of the rotation guide 40, and a stopper 51 that engages with the cutouts 50.

The stopper 51, as shown in FIGS.
Of the support member 52 provided on the pair of L-shaped support members 52 installed on the upper surface 20a of the support member 5 for tilting.
2 and the pin 54 provided on the stopper 51.
The tip end 51a is constantly urged toward the second pallet 12 by the spring 54 stretched between b. The tip end 51a is provided with a roller 55 that comes into contact with a guide G provided along a conveyor (not shown). Stopper 5
A guide body 56 having a trapezoidal cross section is fixed to the rear surface of the guide 1 to guide the engagement with the notch 50.

Next, the operation will be described by taking the assembly of the cathode ray tube B as an example.

The rotating pallet 10 sent to the worker by the conveyor is stopped by a stopper (not shown) on the conveyor. In this case, if the conveyor is, for example, a roller conveyor, a slip occurs between the rollers and a support shaft that rotatably supports the rollers, and the rotation pallet 10 is stopped without any trouble. Further, as shown in FIG. 8, the guide G pushes down the roller 55 at the working position, the stopper 51 of the rotation restricting means 14 is disengaged from the notch 50, and the rotation of the second pallet 12 becomes free.

The panel P of the cathode ray tube B is mounted on the mounting surface 33 of the support member 32, and the mask M and the like are assembled in sequence. At this time, when it is necessary to work on the opposite side, the second pallet 12 may be manually rotated by using the rotation supporting means 13 as a guide to bring the opposite side to the front.

After the assembly of one side of the cathode ray tube B is completed, the cathode ray tube B is turned upside down and placed on the placing surface 33 again as shown by the phantom line in the right half of FIG. The chips and dust that have fallen inside and accumulated,
It is blown off from below by a clean air blowing nozzle (not shown) inserted through the holes 21 and 31 through the rollers of the roller conveyor.

According to the rotary pallet 10 of the above embodiment, during transportation,
The rotation restricting means 14 restricts the rotation of the second pallet 12, and the working position is free to rotate so that the assembling work can be performed efficiently. Therefore, the worker can be placed on only one side to perform the assembly work.

Further, the holes 21 and 31 of the first and second pallets 11 and 12 are
It is possible to insert a tool or the like from the bottom to work from the lower surface of the cathode ray tube B, and the workability is improved.

In addition to the above embodiments, the following embodiments may be considered in order to achieve the same object.

First, the stopper 51 may not be automatically pushed down by the guide G, but may be manually pushed down by an operator at any time, or may be pushed down by an air cylinder, an electromagnetic plunger (not shown) or the like.

Further, the rotation support of the second pallet 12 is performed by the rotation support roller 41 in the vertical state and the rotation guide roller 42 in the horizontal state.
As shown in FIG. 9, the linear movement is performed between the inner circumference 40a of the rotation guide 40 and the ring-shaped support body 70 provided on the upper surface of the first pallet 11 so as to face the inner circumference 40a. Bearings in the form of rings (for example,
There is one in which rollers are used as rolling elements and are arranged so as to cross each other. ) May be used.

Further, as shown in FIG. 10, the rotation guide 40 and a corner 30c formed by the lower surface 30b of the flat plate 30 of the second pallet 12 are in contact with each other in an inclined state, and the rollers 41, 4
The second pallet 12 may be rotatably supported by the guide support roller 80 that performs both of the two functions.

Further, instead of the notch 50 of the rotation restricting means 14, the first
It may be a V-shaped depression (recess) 90 as shown in FIG. In this case, the stopper 51 may be provided with a positioning roller 91 for immersion, and this may be recessed in the dent 90. As a result, the rotation guide 40 and the stopper 5
The contact of 1 is a rolling contact. Further, as shown in FIGS. 12 (a) and 12 (b), the second pallet 95 is formed into a disc shape, and the roller 92 provided on the motor M is pressed against the outer periphery of the second pallet 95 to automatically stop the rotation. It is also possible to efficiently regulate the rotation of the second pallet 95.

Effects of the Invention As described above, according to the rotating pallet of the present invention, the second pallet can be rotated, so that the assembly work can be performed even if the worker is arranged only on one side of the assembly line. Further, since the holes are formed in the first and second pallets, the work can be performed from the lower surface of the work, so that the workability is improved.

If the rotation restricting means is an elastic biasing system provided on the first and second pallets, the operator can operate it at any time.

Further, when it is desired to rotate the second pallet in a specific section of the conveyor, for example, a guide may be provided in the specific section along the conveyor.

[Brief description of drawings]

The drawings are embodiments of the present invention. FIG. 1 is a front view of a cross section of part 1, FIG. 2 is a cross-sectional view taken along line 1-1 of FIG. 2, FIG. 2 is a plan view of FIG. 1, and FIG. Fig. 4 is a partial cross-sectional view of the right side view of Fig. 1, Figs. 4 to 7 are views of rotation restricting means, Fig. 4 is a cross-sectional view taken along line 4-4 in Fig. 5, and Fig. 5 is Top view, No. 6
FIG. 7 is a right side view of FIG. 4, FIG. 7 is a view partially omitted in a sectional view taken along the line 7-7 in FIG. 4, and FIGS. 8 to 12 are other embodiments of each part. FIG. 8 is a diagram showing the relationship between guides and rollers, FIG. 9 is a diagram in which the second pallet is guided and supported by one guide support, and FIG. 10 is a diagram in which the second pallet is guided and supported by one roller. FIG. 11 is a view of another embodiment of the rotation restricting means, FIG. 12 is a view of another rotating means of the second pallet, (a) is a plan view, and (b) is a front view. B ... CRT (work), P ... Pin L ... Rotation center, 10 ... Rotation pallet 11 ... First pallet, 12 ... Second pallet 13 ... Rotation support means, 14 ... Rotation restriction Means 21, 31 ... Hole, 34 ... Positioning hole

Claims (2)

[Scope of utility model registration request] 1. A pallet conveyed by a conveyor, which comprises: a first pallet; a second pallet rotatably provided on an upper part of the first pallet for mounting a work;
And a rotation restricting means for restricting rotation of the pallet, and concentric holes are formed in the first and second pallets so that their centers coincide with the center of rotation of the second pallet. And a rotating palette. 2. The rotation restricting means is provided with a plurality of recesses provided in the second pallet and elastically biased so as to be recessed in the recesses provided in the first pallet. The rotary pallet according to claim 1, comprising a stopper that can be removed from the recess against the bias.