JPH0435290Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a plate reversing device, which is particularly installed in the middle of a conveyor line to reverse the plate material that has been conveyed to the preceding conveyor to the subsequent conveyor, etc. Regarding the reversing device for handing over.

[Prior Art] In a press manufacturing line for a vehicle, for example, when manufacturing a door panel with a symmetrical shape, steel plates (blanks) of the same shape are pressed from opposite sides, and in such cases, the steel plates are It is necessary to turn it over and feed it to the press.

Conventionally, a dedicated reversing device or a crane has been used for reversing steel plates.

In addition, as a dedicated reversing device, for example,
There is No. 36407.

[Problems that the invention aims to solve] By the way, conventional reversing devices use motors and cylinders to operate automatically, and there are problems in that they consume a lot of energy and have complicated mechanisms. .

Further, the use of a crane requires auxiliary workers such as wire hookers, requires a relatively large work area, and has the problem of poor work efficiency.

The present invention aims to solve these problems, and provides a plate reversing device that does not require the supply of operating energy, has a simple mechanism, requires a small installation space, and has high work efficiency. .

[Means for Solving the Problems] As shown in FIG. 1, the reversing device of the present invention operates in the conveying direction (arrow in the figure) of the conveyor 2 that conveys the plate material P.
A rotating shaft 11 provided along the rear end, and a base end fixed to the rotating shaft 11 extend horizontally in the conveying direction to receive the conveyed plate material P and a stopper 121 provided at the tip to stop the plate material P. A cradle 12 that stops the front end and rotates downward in a substantially vertical position around the rotating shaft 11 due to the weight of the plate material P, and a weight 142 is attached to the tip of a support rod 141 that projects from the outer periphery of the rotating shaft 11. a weight balancer 14 that is fixed and biases the rotating shaft 11 so as to return the pedestal 12 to a horizontal position in the absence of the plate material P; It has a push-up member 13 that is moved upward as the plate material P moves and pushes up the rear end portion of the plate material P at its tip.

[Function] To explain the operation of the reversing device with reference to FIGS. 2 to 5, the plate material P conveyed by the conveyor 2 reaches the receiving table 12 (FIG. 2), and the front end thereof reaches the stopper 1.
21 and stops. The pedestal 12 rotates downward against the rotational force of the weight balancer 14 due to the weight of the plate material P, and assumes a substantially vertical position (FIG. 3).
During this time, the push-up member 13 moves upward and pushes up the rear end portion of the plate material P.

As a result, the plate P is rotated around the stopper 121 (FIG. 4). Plate material P
When the weight balancer 1 runs out, the cradle 12 becomes the weight balancer 1.
It is returned to the horizontal position and rotated by the rotational force of step 4 (Fig. 5).

[Effect] As described above, since the reversing device of the present invention operates by counterbalancing the weight of the plate material and the weight balancer, there is no need to provide a motor or cylinder.
Therefore, no energy supply is required.

Since the reversing device operates automatically, there is no need for auxiliary workers, and it has excellent workability, has a simple mechanism, and requires only a small installation space.

[Example] In FIG. 1, the front stage of the rear stage conveyor 3 is located below the rear end of the front stage conveyor 2 with a head difference, and the plate material P is conveyed on the conveyor 2 in the direction of the arrow shown in the figure. There is. A reversing device 1 is provided at the rear end of the conveyor 2.

The reversing device 1 has a rotating shaft 11 disposed along the lower edge of the rear end of the conveyor 2. The rotating shaft 11 is supported on both sides by bearings 21, and these bearings 21 are fixed to the tips of stays 22 extending rearward from both sides of the rear end of the conveyor 2.

A pair of parallel receiving arms 12 extend rearward from the rotating shaft 11, and the distal end of each receiving arm 12 is bent downward into a chevron shape, with the top serving as a stopper portion 121. The receiving arm 12 is provided with rollers 122 at its tip and at a bent portion in the middle.

The rotating shaft 11 also includes each receiving arm 12.
A pinion gear 131 is provided near the extension of the gear, each gear 131 meshing with a rack 132 disposed substantially vertically. Push-up rollers 13 are supported and fixed at the upper ends of these racks 132, and the push-up rollers 13 are substantially flush with the conveyor surface along the upper edge of the rear end of the front-stage conveyor 2. Note that the rack 132 is actually inclined at an angle of about 10 degrees with its upper end facing rearward.

A weight balancer 14 is provided at one end of the rotating shaft 11, and the weight balancer 14 includes a support rod 141 extending through the rotating shaft 11 and a weight 142 fixed to the tip thereof. The support rod 141 is screwed to the rotating shaft 11 by a threaded portion, and the support rod 141
By rotating the rotating shaft 11 and the weight 14
The distance between the two can be varied to adjust the rotational moment created by the weight 142. In the state shown in the figure, the weight 142 is in a downward position due to its own weight, and in this state, both receiving arms 12 are moved as shown in the figure.
It is held in a horizontal position facing backwards.

The other end of the rotating shaft 11 is connected to a reduction shaft 161 via a ratchet type clutch 15. A pulley 162 is provided on the deceleration shaft 161, and a belt 163 is suspended from the pulley 162. One end of the belt 163 is fixed to a stay 23 protruding from the side surface of the conveyor 2, and the other end of the belt 163 passing through the pulley 162 is connected to a spring 164 whose one end is fixed to the stay 23. The belt 163 is pressed against the outer periphery of the pulley 162 by the spring force of a spring 164, and the frictional force between the belt 163 and the pulley 162 causes the deceleration shaft 161 to rotate with resistance.

The clutch 15 separates the rotary shaft 11 from the deceleration shaft 161 when the rotary shaft 11 rotates clockwise as seen in the drawing, and separates the deceleration shaft 161 from both shafts 11 and 16 when the rotary shaft 11 rotates counterclockwise.
Connect 1.

The operation of the reversing device having the above structure will be explained below with reference to FIGS. 2 to 5.

In FIG. 2, the plate material P conveyed by the front conveyor 2 passes over the push-up roller 13, is guided by the roller 122 of the receiving arm 12, reaches the arm bending part, and the front end of the plate material P is brought to the stopper part 12.
1 and stops. When the load of the plate material P is applied, the receiving arm 12 rotates downward against the rotational moment of the weight balancer 14, and assumes a substantially vertical position as shown in FIG. This receiving arm 1
2, the rotating shaft 11 rotates clockwise, and the rack 132 is moved upward as shown in the figure via a pinion gear 131 provided on the rotating shaft 11. Then, the push-up roller 13 provided at the upper end of the rack 132 pushes up the rear end of the plate material P.
As a result, the plate material P is reversed around the stopper portion 121 as shown by the chain line in the figure, and is transferred onto the subsequent conveyor 3 (FIG. 4).

When the plate material P is transferred, the receiving arm 12 is returned upward and rotated by the rotational moment of the weight balancer 14. During this return rotation, the rotating shaft 11 is connected to the deceleration shaft 161, and the pulley 162
It is decelerated by the frictional force of the belt 163 and returns to the horizontal position shown in FIG. 5 at a sufficiently low speed without overshooting. In this state, the next plate material P is received and the above process is repeated to perform the reversal.

According to the reversing device having the above structure, since the reversing operation is performed by counterbalancing the weight of the plate and the weight balancer, there is no need to provide a motor or the like, and therefore there is no need to supply operating energy.

Furthermore, since the reversing device operates automatically, no auxiliary worker is required, and the reversing device has excellent workability, has a simple mechanism, and requires only a small installation space.

In the above embodiment, since the rack 132 supporting the push-up roller 13 is tilted rearward, the rear end of the plate material P can be pushed up sufficiently in the reverse direction.

Furthermore, since the receiving arm 12 has its front end bent downward, it is possible to reliably reverse even a plate material which is curved upward in a convex manner as in the above embodiment.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a reversing device provided on a conveyor line, and FIGS. 2 to 5 are schematic side views showing the operation of the reversing device. DESCRIPTION OF SYMBOLS 1... Reversing device, 11... Rotating shaft, 12... Receiving arm (cradle), 121... Stopper part, 1
3...Pushing roller (pushing member), 131
...Pinion gear, 132...Rack, 14...
Weight balancer, 141...Support rod, 142...
... Weight, 15 ... Ratchet type clutch, 161
... Deceleration shaft, 162 ... Pulley, 163 ... Belt, 164 ... Spring, 2 ... Front stage conveyor (conveyor), 3 ... Back stage conveyor.

Claims (1)

[Claims for Utility Model Registration] (1) A rotating shaft provided along the rear end of a conveyor for conveying plate materials in the conveying direction, and a conveyor whose base end is fixed to the rotating shaft and extends horizontally in the conveying direction. a cradle that receives the plate material and stops the front end of the plate material with a stopper provided at the tip thereof, and rotates downward in a substantially vertical position around the rotation axis due to the weight of the plate material; and a cradle that projects from the outer periphery of the rotation shaft A weight balancer has a weight fixed to the tip of a support rod and urges a rotating shaft to return the cradle to a horizontal position when there is no plate material; A device for reversing a plate material, comprising a push-up member that is moved upward as the plate material is rotated downward and pushes up a rear end portion of the plate material with its tip. (2) Request for registration of a utility model in which the above-mentioned cradle is composed of a pair of receiving arms extending from a rotating shaft, and the tips of the receiving arms are bent downward into a chevron shape, with the top of the chevron serving as a stopper. The device for reversing plate materials according to item 1. (3) The plate material according to claim 1 of the utility model registration claim, in which the push-up member is composed of a pinion gear provided on a rotating shaft, a rack that meshes with the pinion gear and moves up and down, and a push-up roller fixed to the upper end of the rack. reversing device. (4) One end of the rotating shaft is connected to a deceleration shaft via a ratchet type clutch, and a pulley is provided on the deceleration shaft, and a belt is suspended from the pulley to generate friction and provide rotational resistance when the pulley rotates. The plate reversing device according to claim 1, wherein the clutch is configured to connect the rotary shaft to the deceleration shaft only when the pedestal returns to a horizontal position and rotates.