JPH0248324A - Molded product taking-up device - Google Patents

Abstract

PURPOSE:To perform smooth take-out of products by providing a stopper running control part which controls rotation of endless running-round members so that a stopper starts running in one and the same direction at a speed lower than a prod feed speed, and after the product makes contact with the stopper, it is stopped in a position. CONSTITUTION:Stopper running control is applied on endless running-round members 19 and 21, running-round is started before a molded product conveyed to a take-out conveyor 15 is conveyed to stoppers 20 and 22. Since the running speed of the stopper is lower than a product feed speed, the product catches up the stopper and is collided therewith. Since a relative speed between the product and the stopper during this collision is low, a shock force is low and the generation of noise is also reduced. The stopper with which the tip of the product makes contact is stopped in position responding to the product. This constitution positions a tip position during piling up of the products, and consecutively causes the products to be piled up, in order, by dropping the products at this position to provide a given type of package.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a molded product for stacking molded products of different lengths sent to a collection conveyor into a desired packaging form and taking them out. Enter the extraction device.

[Prior Art] In roll forming equipment, generally after forming, the molded products are cut by a running cutter and sent to a take-out device, where they are taken out in a stacked state. In this case, if the length of the products is constant, there is no particular difficulty because it is sufficient to align the ends of the products being sent, take them out, and stack them.

In such a case, the packaging will be as shown in FIG. 7(a), for example. Note that this figure shows the state after applying a buckle and binding with a band using a binding machine.

However, as shown in Figure 7 (B), (C), and (D), there are cases where it is required to perform cross-packing of different lengths. For example, in the case of deck plates used as floor slabs for buildings. If the planar shape of one floor is not square or rectangular, the lengths of the deck plates to be laid will differ.

In such a case, it will be more efficient to pack the materials in the order in which they will be laid out at the construction site.
As shown in (c) and (d), there are cases where items of different lengths are required to be laid out and packed together according to the order in which they are lined up.

Conventionally, there is a take-out device shown in FIG. 8, which has been filed by one of the applicants (Japanese Unexamined Patent Publication No. 124-1989
(Refer to No. 28), this take-out device includes a stopper support frame 2 which is arranged so as to be reciprocally movable in the feed direction along the pick-up conveyor 1 and which is long in the feed direction, and a stopper support frame 2 that is spaced apart in the feed direction from the stopper support frame 2. A plurality of end stoppers 3 for positioning the tip of the product, which are open and installed so that they can be raised and lowered.
A moving drive mechanism 4, such as a rack and pinion, for moving the stopper support frame 2 in the feeding direction; a vertical drive mechanism 5, for example, an air cylinder, for raising and lowering the end stopper 3; For each molded product, the end stopper 3 close to the tip position during stacking is selected, the vertical drive mechanism 5 lowers the end stopper 3, and the end stopper 3 is brought to the tip position during stacking. This configuration includes a stopper positioning control section 6 that calculates the amount of movement for correct matching and causes the movement drive mechanism 4 to move the stopper support frame 2 by the amount of movement. Reference numeral A indicates a molded product, 7 is a runout table, 8 is a lifter for receiving the product, and 9 is a servo motor incorporating a pulse generator 10 and driving the binion 4 under the control of the stopper positioning control section 6.

[Problems to be Solved by the Invention] The above-mentioned conventional take-out device has the following features: the product can be positioned at any position by selecting one of the plurality of end stoppers 3; the end stopper position changing operation is easy and quick; Although it has advantages such as being able to perform the process accurately, it has the disadvantage that it requires a large number of end face stoppers, which makes the device large-scale and increases the equipment cost.

In addition, since the molded product is positioned by colliding with the stationary end stopper 3, the impact force is large and the entire device must have sufficient rigidity, which also increases equipment costs. There are problems such as loud noise at times.

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and it is possible to smoothly take out a product in a desired packaging state with different tip positions or with the tip positions aligned. An object of the present invention is to obtain a device for taking out a molded product, which can reduce the impact force of the product, prevent crushing of the tip of the product, reduce noise, and reduce equipment costs.

[Means for Solving the Problems] In order to solve the above problems, the present invention has an endless circulating member disposed along the take-out conveyor and driven to revolve back and forth in the molded product feeding direction, and an endless circulating member attached to the endless circulating member. The stopper and the stopper start traveling in the same direction at a speed αV (0 × α<1) smaller than the product feed speed V before the molded product sent to the take-out conveyor reaches the stopper, and the product reaches the stopper. and a stopper travel control section that controls the rotation of the endless rotating member so that the endless rotating member stops at a predetermined position after coming into contact with the endless rotating member.

[Function] In the above configuration, the endless circulating member is controlled by the stopper travel control section, starts circulating before the molded product sent to the take-out conveyor reaches the stopper, and starts traveling around the stopper in the product feeding direction. let Since the traveling speed U of this stopper is smaller than the product feed speed ■,
The product catches up with the ST tube and collides with it. Since the relative speed between the product and the stopper at the time of this collision is small, the impact force is small and the noise is small.Next, the stopper with which the tip of the product comes into contact stops at a predetermined position corresponding to the product.

In this way, the position of the leading edge of the products is determined when stacking the products, and then the products are dropped at that position and stacked one after another to obtain a predetermined packaging appearance with different leading edge positions or with the leading edge positions aligned.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 6.

In FIG. 1, reference numeral 11 indicates a cold roll forming machine, and reference numeral 12 indicates a cutting machine.A molded product formed by the forming machine 11 and cut to a predetermined length by cutting 8112 is placed on a runout table 13.
It is conveyed on the top and fed into the take-out device 14.

15 is a take-out conveyor of the take-out device 14, which receives the molded product A sent on the run-out table 13;
Product A is further moved and positioned at a predetermined position.
As will be described later, they are opened left and right, dropped, and stacked on the lifter 16. 17 is a photo sensor that detects the tip of the product;
For example, as shown in the figure, each endless belt 19.2 described below
1, respectively, are provided on the upstream side thereof.

Above the take-out conveyor 15, as shown in FIGS. 3 and 4, there is one first endless belt (endless loop member) in two rows arranged vertically in two sets in the feeding direction;
On both sides of each first endless belt in the width direction, two sets of second endless belts are arranged vertically in two rows so as to have a staggered arrangement with overlapped portions with each of the first endless belts 19 in the feeding direction. (Endless circulating member)
21, and each of the first endless belt 19 and the second endless belt 21 is provided with a first stopper 2o and a second stopper 2o for positioning against the leading end of the product.
2 are provided respectively.

The first stopper 20 is attached to two parts equally divided in the length direction of each of the first endless belts 19 by a member 20.
a (see FIG. 5), and the second stopper 22 is housed in two places that divide each second endless belt 21 into two in the length direction. (see). Although the first endless belt 19 and the second endless belt 21 are arranged at the same height, in FIG.
The position of the second endless belt 21 is illustrated above.

As shown in FIG. 5, each of the first endless belts 1
The rotating shaft 24 of the drive-side sprocket 23 wrapped around the
A pulley 25 is fixed to the center of the frame, and a stand 27 is fixed to a vertical frame member 26 fixed to a device body frame 36, which will be described later.An AC servo motor 28 is arranged on this stand 27. A pulley 29 fixed to the output shaft and a pulley 25 of the rotating shaft 24@ are connected by a timing belt 30. The same applies to the second endless belt 21, and each second endless belt 2
The drive-side sprocket 31 around which the belt 1 is wound is driven by an AC servo motor 32 for the second endless belt. In FIG. 5, the rotating shaft of the sprocket 31 on the second endless belt 21 side, the pulley on this rotating shaft, the pulley of the AC servo motor 32, the connecting timing belt, etc. are those on the first endless belt 19 side. This is the position that overlaps with the drawing and is not displayed in the drawing.

An outline of the control system of the take-out device 14 is shown in a block diagram in FIG.
The AC servo motor 32 driving the endless belt 21 is controlled to rotate the first stopper 20 and the second stopper 20, respectively.
A stopper travel control section that controls the travel of the stopper 22,
The product length and the end position when stacking products are inputted to this stopper travel control section 33 from the personal computer 24, and the stopper travel control section 33 controls the first endless belt 19 having the input end position when stacking products.
Alternatively, one first endless belt or the second endless belt 21 is activated in response to a detection signal from the photosensor 17 immediately before the second endless belt 21 (other photosensors are not activated at this time). The first stopper 20 or the second stopper 22 is started to run by circular driving, and the running speed U of this stopper 20 or 22 is set to a speed αV (0.
1), and decelerates the stopper 20 or 22 where the leading end of the delivered product contacts the stopper 20 or 22 to stop the stopper 20 or 22 at the leading end position when stacking the products. conduct.

The travel control of the stopper 20 or 22 by the stopper travel control section 33, that is, the servo motor 28 or 3
In the second control, the rotation angle of the servo motor 28.32 is cumulatively calculated and controlled by counting the pulses of the pulse generators 28a and 32a attached to the shaft of the servo motor 2832. The rotation angle is cumulatively calculated, the circumferential distance of the endless belt 19, 21 is calculated, and the stopper running is controlled as described above. This stopper travel control section 33 and the molding machine 1
1. The cutting machine 12 is controlled by a personal computer 34.

The detailed structure of the take-out conveyor 15 etc. of the take-out device 14 will be explained with reference to FIG.
is attached to the lower end of an inverted arm 30 which is rotated by an air cylinder 35 via a link i structure 38 around a fulcrum shaft 37 on a take-out device main body frame 36, and is used to drop the molded product A. It is said that it can be opened and closed to the left and right respectively. In addition, the left and right intermediate receivers 40 below the take-out conveyor 15 are also attached to the lower ends of similarly inverted arms 41 that are rotationally driven by a similar mechanism, and can be opened and closed to the left and right, respectively. This intermediate receiver 40 is used to temporarily hold one bundle of products stacked on the lifter 16 while being carried out to the side (leftward in FIG. 5). Although the arm 41 is illustrated in a simplified manner, the shaft portion 41a extends downward due to the vertical movement tj% ellipse 42 by a motor, worm, worm wheel, etc., and the intermediate receiver 40 is lowered.

Next, we will explain the operation.

Please check the product type, length, number, stacking order, etc. in advance.
Stacking mode (i.e., (b) in FIG. 7).

(c), (d), etc.), the number of products in one bundle, etc., are input into the personal computer 34. The molding machine 11, the cutting machine 12, and the take-out device 14 are operated under the control of a personal computer 34.

The product molded into a predetermined cross-sectional shape by the molding machine 1 is cut into a predetermined length by a cutting machine 12, sent onto a run-out table 13, and sent to a take-out conveyor 15. The tip of the sent product is placed on the first endless belt or the second endless belt 2, which has a tip position when stacking the products.
When the photosensor 17 immediately before No. 1 (the other photosensors are turned off) detects the detection signal, the detection signal is sent to the stopper travel control section 33, which controls the stopper travel control section 33. The servo motor 28 or 32 starts, and the rotation is transmitted to the sprocket 23 via the timing bells 1 to 30, the pulley 25, and the rotating shaft 24, or similarly, the rotation is transmitted to the sprocket 31, and the rotation is transmitted to the sprocket 31, and The bell l-19 or the second endless bell 21 is driven to revolve, and a predetermined first stopper 20 or second stopper 22 is driven to revolve. In addition, for each product that is sent, the process is performed from the start of running to the positioning and stopping within the length of one endless belt where the end position is at the time of stacking the product. In other words,
Only one vertical endless heald is used. In this case, which of the two parallel endless belts should be selected, it is best to select the endless belt that will be used so that the tip position when stacking products is downstream from the one-half point in the feeding direction of the endless belt. Good (this is done by the personal computer 24). Furthermore, the two stoppers attached to one endless belt alternately act as stoppers as the endless belt rotates half a turn at a time.

The speed control of the stoppers 20 and 22 is performed as follows. As shown in the time chart of FIG. 6, the stopper 20 is driven by the endless belt 19 or 21.
Or, the speed U of 22 is accelerated to a speed smaller than the feed speed V of the take-out conveyor 15, for example, 0.9V t!
k (acceleration period t+') and run at this constant speed of 0.9■ (constant speed running period t2). During this constant speed running period, the product is 0.0% relative to the stopper 20 or 22. It approaches the stopper 20 or 22 at a relative speed of IV. Note that the traveling speed U of the stopper 20 or 22 is U-05 to 0, considering both the impact mitigation effect and the equipment space.
, 9V is appropriate.

Since the contact between the product and the stopper 22 is at a small relative speed, the impact force at the time of collision is sufficiently small, and the contact is a so-called soft touch.

Therefore, the noise is small, and the first. The rigidity of the second endless belt 19, 21, the vertical frame member 26, the dispensing device main body frame 36, etc. is not required so much, and it is possible to avoid increasing the equipment cost or increasing the equipment cost. It also prevents the product from being damaged by impact.

Subsequently, the servo motor 28 or 32 is decelerated to reduce the traveling speed of the stopper 20 or 22, and the product is positioned on the conveyor 15 during the deceleration period t3) so as to stop at the tip position when stacking the product.

Note that the first endless belt 19 and the second endless belt 21 are arranged so as to have an overlapping portion because each endless belt 19.21 is divided into a plurality of parts in the longitudinal direction.
However, when stopping the leading end of the product at the boundary position on one side, it is necessary to use the other endless belt to stop the product tip. The length and rotation speed of each of the first endless belt 19 and the second endless belt 21 need to be appropriately set to correspond to the range of molding speed and product length.

As mentioned above, when the product is positioned and stopped by the stopper 2o or 22, the air cylinder 35 is activated, the arm 39 rotates around the fulcrum shaft 37, the take-out conveyor 15 opens left and right, and the product is positioned. The finished product is dropped onto the lifter 16. In addition, at this time, the intermediate receiver 40
is open at the position indicated by the two-dot chain line (see Figure 5), so it does not get in the way of the product falling. Note that when a product falls, the endless belt 19 or 21 rotates in the same direction again and stops with the two stoppers on one endless belt swapped positions, and is in a standby state for the next product.

When the above operations are repeated and the products are stacked on the lid 16 in the desired packaging configuration with different tip positions,
The lifter 16 is further lowered from the upper surface of the traverse conveyor chain (indicated by a dashed line (A) in FIG. 5). The lifter 16 in FIG. 5 shows a state in which the lifter 16 is at its lower limit. Subsequently, one bundle is sent to the left in FIG. 5 by the lateral conveyor chain (A) and carried out from the lifter 16. During this time, that is, until the products for one bundle are stacked or the lid 16 is lowered, emptied, and then raised again to a predetermined height position, the arm 41 rotates and the intermediate receiver 40 is moved from the left and right. The product comes to the position shown by the solid line and is temporarily held in place to catch the subsequent product from falling. Then, after receiving, for example, three products, the intermediate receiver 40 is lowered, and the products on the intermediate receiver 40 are placed on the lifter 16. The intermediate receiver 40 then opens left and right, rises, and returns to the original position shown by the two-dot chain line, where it does not interfere with the product falling.

By repeating the above operations, the product becomes as shown in Figure 7 (b), (
They are taken out in a predetermined packaging form such as c) and (d), and are bound by a binding machine (not shown).

In addition, in the example, the endless belt was divided into multiple parts in the feeding direction and a plurality of stoppers were provided in the feeding direction, but if the time cycle for product removal is met, it is possible to divide one or two stoppers into one long endless belt.・It can also be provided with a brim.

Further, the means for taking out the product from the take-out conveyor is not limited to the one in which the take-out conveyor 15 is opened left and right to allow the product to fall, as in the embodiment. For example, it is also possible to employ a mechanism in which a product positioned on a take-out conveyor is gripped with a magnet or the like and moved in the width direction while remaining in that position, or other mechanisms.

[Effects of the Invention] As explained above, according to the present invention, there is provided an endless circumferential member disposed along the take-out conveyor and driven to rotate back and forth in the molded product feeding direction, a stopper attached to the endless circumferential member, and a stopper attached to the endless circumferential member. The stopper starts traveling in the same direction at a speed αV (0 × α × 1) smaller than the product feed speed V before the molded product sent to the pick-up conveyor reaches the stopper, and the product reaches the stopper. The stopper travel control section controls the rotation of the endless rotating member so that the endless rotating member stops at a predetermined position after contacting the end, so that products can be smoothly taken out in a packaged state with a different tip position. In addition, it is possible to improve the stacking position accuracy, reduce the impact force when products collide, reduce noise, eliminate product damage, and further reduce equipment costs. did it.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of a molded product retrieval 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 schematic plan view of a 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, Fig. 6 is a time chart of the stopper operation, and Figs. ) and (d) are explanatory diagrams of how the molded product is packaged, and FIG. 8 is a schematic configuration diagram showing a conventional molded product take-out device. 14... Molded product take-out device, 15... Take-out conveyor, 19.21... Endless belt (endless circulating member), 20.22... S1 to collar 33...
Stopper travel control section.

Claims (1)

[Claims] 1. A take-out conveyor is provided, and molded products of different lengths that are sequentially sent to the take-out conveyor are stacked with their tip positions changed or aligned so that the desired packaging appearance is achieved. The molded product take-out device includes: an endless circulating member disposed along the taking-out conveyor and driven to revolve back and forth in the molded product feeding direction; a stopper attached to the endless circulating member; A speed αV smaller than the product feed rate V before the molded product reaches
a stopper travel control unit that controls the rotation of the endless rotating member so that the product starts traveling in the same direction at (0<α<1) and stops at a predetermined position after the product contacts the stopper. A molded product removal device characterized by: 2. Set the stopper so that the circumference of the endless circumferential member is 2.
Claim 1 characterized in that it is attached at two equally divided locations.
The device for removing the molded product described. 3. The molded product take-out device according to claim 1 or 2, wherein the endless rotating member to which the stopper is attached is arranged in a staggered manner so as to have an overlapping portion in the product feeding direction.