JPH06104497B2 - Work reversing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is capable of decelerating a reversing machine for reversing a plate-shaped work by rotating it before stopping, and improving the accuracy of the stop position of the reversing machine. Reversing device

[Conventional technology]

For example, in a dry rear building, a panel body such as a wall panel or a floor panel used for forming a wall body, a floor body or the like is often turned upside down during production in a factory or the like. As such a device for reversing, a reversing device is known in which a frame for accommodating a panel, which is a work, is rotated by 180 degrees.

Conventionally, in such a reversing device, the frame body is rotated by using an electric motor, but the electric motor is repeatedly turned on and off at high speed and stopped repeatedly.

[Problems to be Solved by the Invention]

However, when the electric motor is directly controlled to be turned on and off, the frame body suddenly stops at the time of stop, and there is a problem that the work cannot be stopped at a position to be inverted accurately due to variations in stop accuracy.

Further, there is a problem that the sudden stop causes a shock to the work and damages the work.

According to the present invention, a detector having a contact piece that abuts against a ring of a rotating frame is provided near a reversing machine that reverses a work, and the amount of positional deviation from the reference plane is reduced as the frame approaches a stop position. It is an object of the present invention to provide a work reversing device which can gradually stop the frame body as the stop position is approached and which can solve the above-mentioned problems, based on the provision of a ring body having an increasing cam surface.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the work reversing device of the present invention has a frame body that rotates around a horizontal center line in one direction and stops at every 180 degrees, with both ends opened and the frame body stopped. A work reversing device having a reversing device for reversing a work inserted into the work insertion gap by providing a work insertion gap that is horizontal at a position, and biasing the work body in the vicinity of the reversing device toward the frame body. And a detector with a contact piece that can be extended and held in the retracted position,
A reference surface that abuts the biased contact piece on the frame body and holds the contact piece at a fixed position during rotation, and a reference surface that is continuous with the reference surface and approaches the stop position of the frame body from the reference surface. An annular body having a cam surface having a receiving portion that locks the contact piece at the end while moving the contact piece by increasing the amount of positional deviation is provided, and the detector is configured such that the contact piece has the reference At the first position of the contact piece that comes into contact with the surface, the first detection output that detects the amount of positional deviation and rotates the frame is used, and at the second position of the contact piece where the contact piece comes into contact with the cam surface. The second detection output that detects the amount of positional deviation and slows down the rotation speed of the frame body and the third position of the contact piece where the contact piece is locked to the receiving portion detect the positional deviation amount. And a third counter output that causes the frame to stop. It is a transfer device.

[Action]

The frame with the work insertion gap rotates in one direction and
The insertion gap is leveled and stopped every 0 degree. Therefore,
Since it is not necessary to reversely rotate the frame body in an empty state, idle time is eliminated and work efficiency can be improved. Further, the frame is provided with an annulus having a reference surface and a cam surface that is displaced from the reference surface as the stop position is approached, while a detector having a contact piece that abuts the annulus is provided. Therefore, when the rotating frame body is stopped, it can be stopped gently, the reversing accuracy for reversing the work can be enhanced, and the impact at the time of stopping can be prevented to prevent the work from being damaged.

〔Example〕

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

1 and 2, a work reversing device 1 according to the present invention inserts a work into a frame 2 that rotates around a horizontal center line L and stops at every 180 degrees so that the work is horizontal at a stop position of the frame 2. It comprises a reversing machine 4 having a gap 3.

In this embodiment, a carry-in conveyor 31 made of a roller conveyor is provided on the upstream side, that is, one end A side of the reversing machine 4, and a carry-out conveyor 32 made of a roller conveyor is provided on the downstream side, that is, the other end B, like the carry-in conveyor 31. They are arranged on the extension lines of the center line L, respectively.

The work reversing device 1 is a device for reversing a work carried in from a carry-in conveyor 31 provided at one end A thereof and sending it to a carry-out conveyor 32 provided at the other end B.

The work is a rectangular plate body, and in this embodiment, is a panel body such as a wall panel in which face plates are attached to the front and back sides of a frame in which frame materials are arranged in a rectangular shape.

The work reversing device 1 is provided with a detector 5 near the reversing machine 4, which is provided with a contact piece 6 which is urged toward the frame 2 and which can be extended and held in the retracted position. The body 2 has an annular body 7 that abuts against the biased contact piece 6, and when the frame body 2 rotates, the contact surface is provided by a reference surface 9 and a cam surface 10 provided on the annular body 7. 6 can move.

The frame body 2 is formed by connecting three rotating plates 21, 21, 21 arranged side by side around the center line L by connecting frames 23, 23.

The rotary plate 21 has a doughnut-shaped base 21A in which a groove-shaped material having a U-shaped cross section is formed into a circular shape with the groove 22 facing inward. The rotating plates 21, 21 are arranged so as to face each other with respect to the center line, and the flanges facing each other have a connecting frame made of grooved steel.
23, 23 are installed and welded at positions symmetrical with respect to the center line L with the groove members 25, 25 facing each other.

The frame 2 can be rotated by the guide rollers 29 that are pressed against the outer peripheral surfaces of the rotary plates 21. The guide roller 29
Are connected by a rotary shaft 30 that is axially supported by bearing pieces 27 that are erected on the base plate 26. The rotary plate 21 constituting the frame body 2 is axially supported by a frame body 19 which is erected on the base plate 26 and on the one end A side and the other end B side, respectively, and is provided with an outer flange of the rotary plate 21. The pair of pulleys 20 and 20 that are fitted prevent the floating.

The guide roller 29 is a roller with a flange having a flange into which the rotary plate 21 is fitted, and the guide roller 29 ... Is the frame body 2 with its center line L horizontal and the carry-in conveyor 31 and carry-out conveyor 32. Pivot parallel to the longitudinal axis. Also, the guide roller
29 ... Are respectively arranged on both sides of a vertical plane including the center line L. The rotating shaft 30 is driven by an electric motor (not shown) that rotates in a fixed direction.

Further, the frame body 2 is arranged vertically with the center line L interposed therebetween.
A work insertion gap 3 whose both ends are open is provided between the pair of conveyors 36, 36.

The conveyors 36, 36 are rollers that are installed inside the frame 2 between a pair of partition walls 33, 33 that are bridged in parallel over substantially the entire length of the frame 2 with a gap equal to or larger than the width dimension of the work. 37
, 39, which is a roller conveyor, and forms the transfer surfaces 15, 15 on which the work inserted from one end A can be transferred to the other end B.

The rollers 37, 39 are pivotally supported by the partition walls 33, 33 in parallel with each other at a symmetrical position with the center line L sandwiched between them and a surface facing each other with a gap into which the work can be inserted.

The partition wall 33 has a substantially rectangular shape and is provided with protruding pieces 33B, 33B protruding in the same direction and at right angles to the substrate 33A on both long sides of the substrate 33A pivotally supporting the rollers 37 ,. Then, the substantially U-shaped groove portions are faced to each other and arranged inside the frame body 2.

The partition walls 33, 33 have the respective protruding pieces 33B, 33B as the rotary plate.
It is fixed to the frame body 2 by being fixed to the mounting members 40, 40 which are laid in parallel inside each of 21 ...

The rollers 37, 39, ... are adjacent rollers 37, 37, 39,
One end of 39 is sequentially linked by an endless string 41 such as a belt, and the output shafts of the electric motors M1 and M2 and one roller 37, 39 are connected.
By connecting and using, for example, a belt transmission mechanism, they rotate in the same direction at the same time.

The electric motors M1 and M2 are the protruding pieces 33B and 3 of the partition walls 33 and 33, respectively.
It is fixed to the plate members 42, 42 that bridge 3B.

The transport conveyor 36 located below is horizontal at the stop position of the frame body 2, and the upper surface of the transport conveyor 36 is aligned with the carry-in conveyor 31. The pair of conveyors 36, 36 constitute the reversing machine 4 together with the frame 2.

In the vicinity of the reversing machine 4, in this embodiment, the rotary plate 21 on the other end B side.
A detector 5 is provided below.

As shown in FIGS. 1 and 2, the detector 5 pivotally supports a disc 44 having an upper end over the rod on the rod upper side and the unloading side of the cylinder 43, and is constantly rotated by the urging force of the cylinder 43.
The disk 44 is therefore urged toward
The circular plate 44 contacts the peripheral surface of the rotary plate 21 and rotates with the rotation of the rotary plate 21, and is urged and extended toward the frame body 2, that is, upward in this embodiment. Can be moved to.

Further, on the peripheral surface of the rotary plate 21, a groove portion into which the disc 44 can be fitted so that the cylinder 43 has the longest stroke at a position in which the work insertion gap 3 is horizontal and is displaced toward the carry-out side.
13 and 13 are engraved in two places.

The groove portion 13 gradually becomes deeper along the rotation direction of the reversing machine 4. Therefore, when the rotary plate 21 rotates, the contact piece 6 is rotated.
The reference surface 9 that is a peripheral surface that does not have the groove portion 13 that holds the reference position at a fixed position, and the amount of positional deviation from the reference surface 9 increases as it approaches the reference surface 9 and is stopped by the frame 2. The annular body 7 having the cam surface 10 formed of the groove portion 13 for moving the contact piece 6 upward by gradually increasing the stroke of the cylinder 43 is formed. The cam surface
As shown in FIG. 4 (c), 10 is a receiving portion 10 for locking the disc 44 forming the contact piece 6 at the end of the ring body 7 in the rotation direction.
Have an A.

As shown in FIG. 4 (a), the detector 5 detects the amount of positional deviation of the contact piece 61 at the first position of the contact piece 61 where the contact piece 6 contacts the reference surface 9, that is, the shortest stroke position of the cylinder 43.
To generate a first detection output for rotating the frame body 2 at a high speed. Further, the detector 5 is displaced at the second position of the contact piece 6 where the contact piece 6 abuts on the cam surface 10 as shown in FIG. 4 (b), that is, the position where the cylinder 43 gradually extends its stroke. A second detection output for decelerating the rotation speed of the frame body 2 is generated by detecting the amount by the contact Y. Further detector 5
The contact piece 6 has the receiving portion 10A as shown in FIG. 4 (c).
To the third position of the contact piece 6 which is locked to the cylinder 43
A positional deviation amount is detected by the contact point Z at the longest stroke position, and a third detection output for stopping the frame body 2 is generated. Further, a switch for forcibly retracting the rod of the cylinder 43 and rotating the frame body 2 again from the stopped state is provided in, for example, a control box (not shown), whereby the contact piece 6 is moved to the retracted position (fourth position).
It is temporarily held at the position shown in FIG. Here, "temporary" means a period until the contact piece 6 is released from the engagement with the receiving portion 10A and again comes into contact with the reference surface 9.

The reversing machine 4 is provided on the other end B side of the frame body 2 with the transfer conveyor 36.
Has a pair of stoppers 16 that move back and forth at a right angle to the transport surface 15 and are attached upside down at the stop position, and move the stopper 11 forward in the vicinity of the reversing machine 4. It is provided with actuators 17 having a push-up piece 18.

The stop 16 is shown in FIGS. 2 and 3 (a)-(b) at the stop position.
As shown in FIG. 3, the fixing plate 46 is fixed along the mounting member 40 to be mounted on the rotary plate 21, and penetrates the fixing plate 46 at right angles to the both ends of the fixing plate 46 extending inward of the frame 2. Cylinder-shaped push-up shaft 1 fitted in the hollow cylinders 47, 47 fixed by
On the upper ends of 4 and 14, the contact piece 11 is placed and laid horizontally and in parallel with the fixed plate 46. This piece 11 has a vertical piece 11B that rises at right angles from the end of the horizontal piece 11A on the inner side of the frame 2 and has a base body with an L-shaped cross section. The base body has a trapezoidal reinforcing piece 11C in its recess.
Are separated. A lifting plate 49 is installed in parallel with the fixing plate 46 at the lower ends of the push-up shafts 14 and 14 and below the fixing plate 46.

The lifting plate 49 is a shaped steel material having substantially the same structure as that of the abutting piece 11 and is turned upside down, and at both ends of the horizontal piece 49A, pendants 51 and 51 having a horizontal small plate 50 at the lower end are provided. Mounted. The pendant 51 is, for example, a bolt, the head of which is the small plate 50,
It is formed by suspending with bolts in bolt insertion holes formed at both ends of the lifting plate 49. The spring C is attached by winding the push-up shaft 14 between the cylinder 47 and the lifting plate 49.

Below the spring C, that is, below the small plate 50, and above the base plate 26.
A pair of actuators 17, 17 are arranged side by side.

The actuator 17 has a structure in which, for example, a hard rubber cap 54 is attached to the upper end of a cylinder 53 having a rod protruding upward,
The rubber cap 54 forms the push-up piece 18.

In the stop position, the actuator 17 raises the push-up piece 18 as the cylinder 53 extends. As a result, as shown in FIG. 3 (b), the small plate 50 is moved forward, that is, raised, so that the contact piece 11 connected to the small plate 50 is perpendicular to the transport surface 15 and inside the insertion gap 3. Project to and stop the work.

As shown in FIG. 3 (a), the stopper 16 is always urged by the spring C to urge the lifting plate 49 so that the contact piece 11 is inserted into the insertion gap 3
Is moved backward to the open position, that is, lowered in the stopped state. On the other hand, the actuator 17 depresses the push-up piece 18 by reducing the rod of the cylinder 53, and pushes the push-up piece 18 further below the lower surface of the small plate 50 of the stopper 16 to provide a gap between the push-up piece 18 and the small plate 50. That is, it is arranged separately from the stopper 16. Therefore, the stopper 16 and the actuator 17 do not interfere with each other when the frame 2 rotates.

As shown in FIG. 2, a pair of stoppers 16 are provided upside down, and each of them is moved forward and backward by an actuator 17 at a position where the frame 2 is stopped every 180 degrees.

〔The invention's effect〕

As described above, the work reversing device of the present invention is provided with a detector having a contact piece that advances and retracts toward the frame in the vicinity of the reversing machine, and the reference surface and the cam surface of the annular body formed in the frame. The contact piece is moved by and the contact piece is locked to the receiving portion provided at the end of the cam surface. Therefore, the work insertion gap can be stopped with high horizontal accuracy by the detector and the cam surface. Further, since the cam surface is continuous with the reference surface, the frame body can be gradually stopped, and damage to the work due to sudden stop can be prevented. The detector detects a positional deviation amount at a first position of the contact piece where the contact piece comes into contact with the reference surface, and rotates the frame body.
And a second detection output for detecting the positional deviation amount at the second position of the contact piece where the contact piece comes into contact with the cam surface to reduce the rotation speed of the frame body, and the contact piece A third detection output that detects the amount of positional deviation and stops the frame body at the third position of the contact piece that is locked to the receiving portion, so that the frame body rotates at high speed, decelerates, and stops. It becomes possible to easily perform the above series of operations using a single detector with a simple configuration.

[Brief description of drawings]

1 is a perspective view showing a work reversing device of the present invention, FIG. 2 is a side view showing the other end of the work reversing device, and FIG. 3 (a).
-(B) is a front view which details a stop and an actuator, and FIGS. 4 (a)-(c) is a front view which shows the effect | action of a detector roughly. 2 ... frame body, 3 ... work insertion gap, 4 ... reversing machine, 5 ... detector, 6 ... contact piece, 7 ... annular body, 9 ... reference surface, 10 ... cam surface,
10A ... Receiving part.

Claims (1)

[Claims] 1. Rotating in one direction about a horizontal center line and
A reversing machine that reverses the work inserted into the work insertion gap by providing a work insertion gap that is open at both ends across the center line and is horizontal at the stop position of the frame in the frame that stops every 0 degrees. A work reversing device having, wherein, in the vicinity of the reversing machine, a detector provided with a contact piece that is urged toward the frame and extends and can be held in a retracted position is provided in the frame, A reference surface that contacts the biased contact piece and holds the contact piece at a fixed position during rotation, and increases the amount of positional deviation from the reference surface that is continuous with the reference surface and approaches the stop position of the frame body. By providing a ring body having a cam surface having a receiving portion that locks the contact piece at the end while moving the contact piece, and the detector is configured so that the contact piece makes contact with the reference surface. In the first position of the piece A first detection output that detects the amount of positional deviation and rotates the frame, and a rotation of the frame that detects the amount of positional deviation at the second position of the contact piece where the contact piece contacts the cam surface. A second detection output for decelerating the speed and a third detection output for detecting the positional deviation amount at the third position of the contact piece where the contact piece is locked to the receiving portion and stopping the frame body. A work reversing device characterized by being generated.