JPH0679932B2 - Molded product take-out device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a molded product for sequentially stacking and taking out molded products of different lengths which are sequentially fed by a drive run-out table so as to have a desired packing shape. Regarding the take-out device.

[Prior Art] Generally, in a roll forming equipment, formed products cut by a cutting machine after forming are sent to a take-out device and taken out in a stacked state by the take-out device. In this case, if the length of the product is constant, there is no particular difficulty because the tips of the products sent may be taken out and stacked. In such a case, for example, the packing and packaging as shown in FIG. It should be noted that the figure shows a state after applying a pad and binding with a band using a binding machine.

However, there are cases where it is required to carry out tie-packing of different lengths as shown in FIGS. 6B, 6C, and 6D. For example, in the case of a deck plate used as a floor slab for a building, when the floor shape of one floor is not square or rectangular, the length of the deck plates to be laid out is different. In such a case, it is efficient in construction if they are packed in the order in which they are laid out at the construction site. Therefore, as shown in Fig. 6 (b), (c), and (d), those with different lengths are laid out in the order. May be required to be tie-packed in accordance with.

Conventionally, there is a take-out device shown in FIG. 7 already filed by the applicant of the present invention as a take-out device for performing tie-up packing of different lengths as described above (see Japanese Patent Laid-Open No. 63-12428). This take-out device is attached to a stopper support frame, which is arranged so as to be reciprocally movable in the feed direction along a take-out conveyor, and long in the feed direction, and is attached to the stopper support frame 2 at an interval in the feed direction and can be moved up and down. A plurality of end face stoppers 3 for positioning the end of the product, a movement drive mechanism 4 for moving the stopper support frame 2 in the feed direction, for example, a rack and a pinion, and the end face stopper 3
A vertical drive mechanism 5 such as an air cylinder for moving up and down, and an end face stopper 3 close to the tip position at the time of stacking are selected for each molded product sent to the take-out conveyor 1, and the vertical drive mechanism 5 is used. The end face stopper 3 is lowered, and a movement amount for the end face stopper 3 to correctly match the stacking front end position is calculated, and the movement driving mechanism 4 moves the stopper support frame 2 by the movement amount. This is a configuration including a stopper positioning control unit 6 for moving. Reference numeral A denotes a molded product, 7 is a runout table, 8 is a lifter for receiving the product, and 9 is a servomotor which incorporates a pulse generator 10 and drives the pinion 4 under the control of the stopper positioning control unit 6.

[Problems to be Solved by the Invention] In the above-mentioned conventional take-out device, the product can be positioned at an arbitrary position by selecting any of the plurality of end face stoppers 3, and the end face stopper position changing operation is easy, quick, and However, it requires a large number of end face stoppers and the like, so that there is a drawback that the device becomes large in size and the equipment cost becomes high.

Further, since the molded product is positioned by colliding with the stationary end face stopper 3, its impact force is large and sufficient rigidity of the entire apparatus is required, which also causes a high equipment cost, and further the collision. However, there is a problem that the noise is great and the end surface of the product may be damaged at the time of collision.

Further, the take-out conveyor 1 is a drive roller table that feeds a product with a roller rotating force similarly to the drive run-out table 7, and normally, the rotation of a motor is transmitted by a rotation transmission mechanism such as a gear or a chain. Is driven to rotate, but the noise of these gears, chains, etc. is large. Moreover, the equipment cost of such a drive equipment is not necessarily low.

The present invention has been made in order to solve the above-mentioned conventional drawbacks, and it is possible to smoothly take out a product in a package packing form in which the tip position is changed, and reduce the impact force at the time of product collision to reduce noise. It is an object of the present invention to provide a molded product take-out device that can reduce the number of times, does not damage the end face of the product at the time of collision, eliminates the noise accompanying the driving of the take-out conveyor, and can reduce the equipment cost.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a non-driving take-out roller table that is continuous with a driven run-out table and an upper position that allows contact with the product rear end of the take-out roller table. A pusher movably provided forward and backward in the product feeding direction, a magnet provided on a surface of the pusher that contacts the product rear end, and a pusher for driving the pusher to move forward and backward in the feeding direction, a traveling drive mechanism, and Based on the product rear end detection sensor that detects the rear end of the product sent to the take-out roller table and the detection signal of the product rear end detection sensor, the pusher travels from the rear of the product rear end to the front in the feeding direction and takes out the product. After touching the rear end of the product sent to the roller table and pushing the product forward in the sending direction, the length of the product and the product The pusher traveling control unit that controls the pusher traveling drive mechanism is configured to stop at a predetermined position set according to the order in which the products are sent.

[Operation] In the above configuration, when a product is sent, the product rear end detection sensor detects this, and the pusher traveling control unit causes the pusher to travel forward in the feeding direction based on the detection signal. The pusher is controlled by the pusher traveling control unit and runs from the rear of the product rear end to the front in the feeding direction to contact the product rear end, and attracts the product with the magnet, and pushes the product as it is on the non-driven take-out roller table. , Stop at a predetermined position set according to the length of the product and the order in which the product is sent. In this way, the rear end position of the products is positioned at the time of stacking, and then the products are sequentially stacked by dropping the products at that position to obtain a predetermined packing shape with different front end positions.

In the above operation, since the pusher and the product come into contact with each other at a small relative speed, the impact at the time of the contact is extremely small and the noise is also small. Further, since the take-out roller table is not driven, there is no noise caused by transmission members such as gears and chains. Further, since the pusher attracts the product by the magnet, even if the pusher pushes the rear end of the product, the product can be properly stopped at a predetermined position without overtaking.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

In FIG. 1, 11 is a cold roll forming machine and 12 is a cutting machine. The molded product, which has been molded into a predetermined cross-sectional shape such as a deck plate by the molding machine 11 and cut into a predetermined length by the cutting machine 12, has a runout table 13 driven by a driving roller.
It is conveyed by the rotating force of the roller above and sent to the molded product take-out device 14.

Reference numeral 15 denotes a non-driven take-out roller table of the take-out device 14, which receives the molded product A sent on the driven run-out table 13 and receives a first pusher 20 or a second pusher 20 to be described later.
The product A positioned by the pusher 22 is opened leftward and rightward to be dropped and stacked on the lifter 16 as described later. 17 is a photo sensor that detects the rear edge of the product (product rear edge detection sensor)
For example, as shown in the drawing, it is provided in the vicinity of the upstream end position of the most upstream endless belt among a plurality of endless belts 19 and 21 described later to which the pushers 20 and 22 are attached.

Above the take-out roller table 15, a first pusher 20 and a second pusher 22, which will be described later, that drive the rear end of the product A and stop it at a predetermined position to position the rear end position when the products are stacked are driven to run. The pusher traveling drive mechanism 18 is arranged. This pusher traveling drive mechanism 18
As shown in FIG. 3 and FIG. 4, for example, in the embodiment, four sets of first endless belts 19 are arranged vertically in the feeding direction, and the first endless belts 19 are provided on both sides in the width direction in the same feeding direction. The first endless belt 19 and three sets of second endless belts 21 arranged vertically in a zigzag arrangement are provided, and the first pusher 20 is arranged in the longitudinal direction of each of the first endless belts 19. The second pusher 22 is attached to the second pusher 22 at two places equally divided into
Are attached to the respective second endless belts 21 at two places that are divided into two equal parts in the lengthwise direction via attachment members 22a. Magnets 20b and 22b are provided on the contact surfaces of the first and second pushers 20 and 22 with the product rear ends, respectively. Although the first endless belt 19 and the second endless belt 21 are arranged at the same height, the position of the second endless belt 21 is shown above in FIG. 4 for explanation of the front-back relationship.

Arranging the first endless belt 19 and the second endless belt 21 in a zigzag manner as described above enables the pusher that pushes the rear end of the product to easily cope with the time cycle of the products sent one after another. This is because. This will be described in detail later. As shown in FIG. 5, the pulley 25 is fixed to the center of the rotary shaft 24 of the sprocket 23 on the drive side around which the first endless belts 19 are wound, while it is fixed to the device body frame 36 described later. A table 27 is fixed to the vertical frame member 26, the AC servomotor 28 is arranged on the table 27, and a pulley fixed to the output shaft of the AC servomotor 28.
29 and the pulley 24 on the side of the rotary shaft 24 together with the timing belt 30.
Are connected by. The same applies to the second endless belt 20, and the drive-side sprocket 31 around which each second endless belt 21 is wound is driven by the AC servomotor 32 for the second endless belt. In FIG. 5, the sprocket on the second endless belt 21 side
31 rotation axis, pulley on this rotation axis, AC servo motor
The 32 pulleys, the timing belt to be connected, and the like are positions that overlap with the respective ones on the first endless belt 19 side in the drawing, and are not shown in the drawing. The first and second endless belts 19, 21, the AC servomotors 28, 32, the pulley 29, the timing belt 30 and the like constitute a pusher traveling drive mechanism.

An outline of the control system of the take-out device 14 is shown in a block diagram in FIG. Reference numeral 33 designates the AC servomotor 28 on the side of the first endless belt 19 and the second endless belt 21.
The pusher traveling control unit 33 controls the AC servo motor 32 on the side to control traveling of the first pusher 20 and the second pusher 22, respectively. The pusher traveling control unit 33 receives the detection signal of the photo sensor 17 The first pusher 20, by driving the first endless belt 19 or the second endless belt 21,
Or, while the traveling of the second pusher 22 is started,
The pushers 20 and 22 run from the rear of the rear end of the product to the front in the feeding direction, contact the rear end of the delivered product, push the product forward in the feeding direction, and then stop at a predetermined position. The pushers 20 and 22 are controlled to stop at the rear end position when the products are stacked.

Servo motors 28, 32 by the pusher traveling control unit 33
Is controlled by counting the pulses of the pulse generators 28a, 32a mounted on the axes of the servomotors 28, 32 and cumulatively calculating the rotation angle of the servomotors 28, 32. Of the endless belts 19 and 21 is cumulatively calculated to perform the pusher traveling control as described above. The pusher traveling control unit 33, the molding machine 11 and the cutting machine 12 are controlled by a personal computer 34.

The detailed structure of the take-out roller table 15 and the like of the take-out device 14 will be described with reference to FIG. 5. The take-out roller table 15 is rotated by an air cylinder 35 about a fulcrum shaft 37 on the take-out device body frame 36 via a link mechanism 38. It is attached to the lower end of an inverted L-shaped arm 39 that is driven, and can be opened and closed to the left and right to drop the molded product A. Further, the left and right intermediate receivers 40 below the take-out roller table 15 are also attached to the lower ends of similarly inverted L-shaped arms 41 which are rotationally driven by a similar mechanism, and can be opened and closed left and right respectively. This intermediate receiver 40
Is for temporarily holding one bundle of products stacked on the lifter 16 while being laterally (leftward in FIG. 5). Although the arm 41 is shown in a simplified manner, a shaft 42a is extended downward by an up-and-down moving mechanism 42 including a motor, a worm, a worm wheel, etc.
To lower.

Next, the operation will be described.

In advance, product type, length, number of products, stacking order,
Stacking mode (that is, (b), (c) in FIG. 6,
(Either (2) or the like)) The product take-out data such as the number of one bundle is input to the personal computer 34. Molding machine 1
1, the cutting machine 12 and the take-out device 14 move under the control of the personal computer 34.

The product molded into a predetermined cross-sectional shape by the molding machine 11 is cut by the cutting machine 12
Is cut into a predetermined length, is fed on the drive run-out table 13, and is fed to the take-out roller table 15. When the photo sensor 17 detects the rear end of the sent product,
The detection signal is sent to the pusher traveling control unit 33, the servo motor 28 or 32 is activated by being controlled by the pusher traveling control unit 33, and the Sfu rocket 23 is rotated via the timing belt 30, the pulley 24, and the rotary shaft 25. The rotation is transmitted to the sprocket 31 in the same manner, or the rotation is transmitted to the sprocket 31, the first endless belt 19 or the second endless belt 21 is driven to rotate, and the first pusher 20 or the second pusher 22 is driven to rotate. The first pusher 20 or the second pusher 22 follows the rear end of the product (upstream side; left side in FIG. 1 and the like) and comes into contact with the rear end surface of the product, and the magnets 20b and 22b on the surface push the end surface of the product. Is adsorbed and the product is pushed forward in the feeding direction (downstream side; rightward in FIG. 1 etc.).

In this case, the take-out roller table 15 is just a non-driven free roller, so the product is simply the pusher 20 or
It is only pushed by 22, and is controlled by the pusher traveling control unit 33 so that the pusher 20 or 22 is at a predetermined position, that is,
When the product is stopped at the rear end position during stacking, the product rear end is positioned at the pusher position. The magnets 20b, 20b provided on the contact surface of the pushers 20, 22 with the product
Prevents the product from traveling excessively due to inertia and stops the product together with the pushers 20 and 22.

The first pusher 20 and the second pusher 22 in the above operation
The details of the control will be described. In FIG. 4, the case where the rear end of the product is to be positioned at the point B will be described. The positions before the pushers 20 and 22 are actuated, that is, the initial positions are shown for the first and second endless belts 19 and 20, respectively. When the photo sensor 17 to which the product is sent detects the rear end of the product, the pusher traveling control unit 33 causes the first first endless belt 19 ₁ to circulate. . Thus, the first pusher 20 ₁ of the first first endless belt 19 ₁ Te circulating on the downstream side as indicated by an arrow from the position of FIG, per product rear,
Push the product as it is. Next, the product rear end is the upstream end position of the _first second endless belt 21 ₁ (P ₁ position in the figure)
When the pusher traveling control unit 33 detects that the vehicle has passed through the moving distance by the moving distance calculation, the first second endless belt 21 ₁ is activated and the second push 22 ₁ hits the rear end of the product and the product A together with the first pusher 20 _1. Soon after, the first pusher 20 ₁ is separated from the product A, and the product A is pushed only by the second pusher 22 ₁ . When the rear end of the product passes the point P ₂ and enters the area of the _second first endless belt 19 ₂ , the second first endless belt 19 ₂ is also activated by the control of the pressure traveling control unit 33, and the second endless belt 19 ₂ is activated. The pusher 20 ₂ advances to hit the rear end of the product, thus delivering from the first first pusher 20 ₁ to the first second pusher 22 ₁ and from this second pusher 22 ₁ to the second first pusher 20 _2. Is delivered to. In these operations, the first pusher 20 or the second pusher that has finished the product feeding operation in its own area
22 returns to the initial position of the upstream end by the circulation of the endless belts 19 and 21, and waits for the next product. Thus, instead of a single long endless belt, a plurality of short first endless belts 19 and second endless belts 21 are arranged zigzag so that they can be delivered to each other as new ones. With regard to the endless belts 19 and 21, the pushers 20 and 22 have a short return time, which makes it possible to cope with the cycle of products sent one after another. It is necessary to properly set the length of one of the first endless belt 19 and the second endless belt 21 and the revolving speed so as to correspond to the range of the molding speed and the product length.

As described above, when the product is positioned in the first pusher 20 or the second pusher 22 and stopped, the air cylinder 35 is subsequently operated and the arm 39 rotates about the fulcrum shaft 37,
The take-out roller table 15 opens left and right, and the positioned product is dropped on the lifter 16. At this time, the intermediate receiver 40 is opened at the position indicated by the chain double-dashed line, so that it does not interfere with the product drop.

When the above operations are repeated and the products are stacked on the lifter 16 in a desired packing form with different tip positions, the lifter 16 is moved to the upper surface of the transverse feed conveyor chain (indicated by a chain line (a) in FIG. 4). (Shown). The lifter 16 in FIG. 5 shows a state in which the lifter 16 is at the lower limit. Then, one bundle is sent to the left side in FIG. 5 by the horizontal feed conveyor chain (a) and is carried out from the lifter 16.
During this time, that is, the lifter 16 in which products for one bundle are stacked
The arm 41 rotates until the intermediate receiver 40 closes from the left and right until it falls to the empty position and rises to the predetermined height position again, and then the position shown by the solid line in FIG. Hold it temporarily after receiving it. Then, for example, when three products are received, the intermediate receiver 40 descends, and the products on the intermediate receiver 40 are placed on the lifter 16. The intermediate receiver 40 then opens to the left and right and rises to the original 2 position that does not interfere with the product falling.
Return to the position shown by the dotted line.

By repeating the above operation, the product is
(C), (d), etc. are packed in a predetermined packing form, taken out, and bound by a binding machine (not shown).

In the above-mentioned product taking-out operation, the pushers 20 and 22 move forward and come into contact with the rear end surface of the product.
Since the contact between the pusher 20 and the pusher 20 is a contact at a small relative velocity, the impact force at the time of collision is sufficiently small, so to speak, a soft touch contact. Therefore, the noise is low, and the first endless belt 19 and the second endless belt 2 are
1, rotary shaft 25, vertical frame material 26, take-out device body frame 3
Rigidity such as 6 is not required so much, and it is possible to avoid a large facility cost or an increase in facility cost. Also, the product is prevented from being damaged by impact.

Further, since the take-out roller table 15 is a simple free roller that is not driven, there is no noise caused by transmission members such as gears and chains.

In the embodiment, the endless belt is divided into a plurality of parts in the feed direction and a plurality of pushes are provided in the feed direction. However, one pusher is provided for one endless belt if the product removal time cycle is completed. But it's okay. In this case, there is no need to transfer between the two pushers, so there is no need for a double row.

Further, in the embodiment, the push for pushing the rear end of the product is attached to the endless belt to circulate, but a pusher having a mechanism of linearly reciprocating may be used. In this case, the pusher performs operations such as tilting horizontally and returning so as not to hit the product when returning.

Further, the means for taking out the product from the take-out roller table is not limited to the one for opening the take-out roller table 15 left and right to drop the product as in the embodiment. For example, a mechanism that holds the product positioned on the take-out roller table with a magnet or the like and moves the product in the width direction at that position, or another mechanism may be employed.

[Effects of the Invention] As described above, according to the present invention, a non-driving take-out roller table continuous to a driven run-out table
The pusher provided movably forward and backward in front of the product feed at a position above the product rear end of the take-out roller table, the magnet provided on the surface of the pusher that contacts the product rear end, and the pusher. Based on a pusher traveling drive mechanism that drives the front and rear of the feeding direction, a product rear end detection sensor that detects the rear end of the product sent to the take-out roller table, and a pusher based on the detection signal of the product rear end detection sensor. Runs from the rear of the product to the front in the feeding direction, contacts the rear end of the product sent to the take-out roller table, and pushes the product forward in the feeding direction as it is. To stop at a predetermined position set according to the order in which they are sent,
Since the pusher traveling control unit for controlling the pusher traveling drive mechanism is provided, it is possible to smoothly take out the product in a packed package with a different tip position and reduce the impact force at the time of product collision. As a result, the noise can be reduced, the product can be prevented from being damaged, and the facility cost can be reduced. Further, since the take-out roller table is not driven, the noise at the take-out roller table can be reduced.

According to the second aspect, since the pusher on the upstream side and the pusher on the downstream side are arranged so that a part of their moving ranges overlap, it is possible to secure a wide positioning range as a whole. The movement range of each pusher is small, so it can easily cope with the time cycle of products sent one after another, effectively functioning as a molded product takeout device for roll forming equipment.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a molded product take-out device showing an embodiment of the present invention, FIG. 2 is a block diagram showing a control system of the device, and FIG. 3 is a plan view schematically showing a position part of the device,
FIG. 4 is a side view for explaining the operation of the device, FIG. 5 is a detailed sectional view of the device, and FIG. 6 is (a), (b),
(C) and (D) are explanatory views of the package packing of the molded product, and FIG. 7 is a schematic configuration diagram showing a conventional molded product takeout device. 13 …… Runout table, 14 …… Molded product take-out device, 15 …… Take-out roller table, 16 …… Lifter, 17…
… Photo sensor (product front end detection sensor), 19 …… First endless belt, 20 …… First pusher, 21 …… Second endless belt, 22 …… Second pusher, 28,32 …… Servo motor (above 19 , 20, 21, 22, 28, 32, etc. constitute a pusher traveling drive mechanism), 33 ... Pusher traveling control unit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-59-31208 (JP, A) JP-A-63-12428 (JP, A) Actual opening 61-46931 (JP, U) Actual opening Sho- 60- 126424 (JP, U) JP 58-22417 (JP, B2)

Claims (2)

[Claims] 1. A molded product take-out apparatus for stacking molded products of different lengths sequentially sent by a drive run-out table by changing the tip position so as to obtain a desired packing load, and continuously connecting the drive run-out table. A non-driving take-out roller table, a pusher provided movably forward and backward in the product feeding direction at an upper position where the take-up roller table can come into contact with the product rear end, and a surface of the pusher that comes in contact with the product rear end. A magnet provided, a pusher traveling drive mechanism that drives the pusher to move forward and backward, a product rear end detection sensor that detects the rear end of the product sent to the take-out roller table, and the product rear end detection sensor. On the basis of the detection signal of Contact the rear end of the product sent, push the product forward as it is, and then stop at a predetermined position set according to the length of the product and the order in which the product is sent. A molded product take-out device, further comprising: a pusher traveling control unit for controlling the pusher traveling drive mechanism. 2. The upstream pusher, wherein the pusher moves forward and backward within a certain distance range on the take-out roller table, and the upstream portion of the front part of the moving range of the upstream pusher partially overlaps. The molded product take-out apparatus according to claim 1, comprising a downstream pusher that moves back and forth within a certain distance range in front of the pusher moving range.