JPH0776054B2 - Method and device for removing molded products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a molded product takeout device for stacking and taking out molded products sent to a takeout conveyor and having different lengths so as to have a desired packing load. Regarding

[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 hand 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 of arrangement. 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 arranged along the take-out conveyor 1 so as to be capable of reciprocating in the feed direction, and a stopper support frame 2 that is long in the feed direction, and can be moved up and down at a distance from the stopper support frame 2 in the feed direction. A plurality of end face stoppers 3 for positioning the front end of the product, a movement driving mechanism 4 for moving the stopper support frame 2 in the feed direction, for example, a rack and a pinion, and an air lift for raising and lowering the end face stopper 3. For the vertical drive mechanism 5 using a cylinder or the like, and for each molded product sent to the take-out conveyor 1, the end face stopper 3 near the tip position at the time of stacking is selected, and the vertical drive mechanism 5 causes the end face stopper 3 to be selected. And the end face stopper 3 is moved so that the end face stopper 3 is correctly aligned with the leading end position at the time of stacking. The mechanism 4 is a mechanism including a stopper positioning control unit 6 for moving the stopper support frame 2 by the amount of movement. 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 has a feature that it can be performed accurately, and that even if short products are sent one after another in an extremely short time cycle, it can be easily accommodated. However, since many end face stoppers are required, There is a drawback that the equipment becomes large 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. There is a problem that the noise is great and the end surface of the product may be damaged at the time of collision.

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 desired packing load with the tip position changed or the tip positions aligned, and an extremely short time is required. Molding that can easily and surely respond to cycles, reduce the impact force at the time of product collision, reduce noise, do not damage the end surface of the product at the time of collision, and further reduce the equipment cost The object is to obtain a product removal method and an apparatus therefor.

[Means for Solving the Problems] A method of the present invention for solving the above problems comprises a plurality of endless members vertically arranged above a take-out conveyor, and each endless member is brought into contact with a front end surface or a rear end surface of a product. A first traveling mechanism having a possible end face contact member attached thereto, and a plurality of endless members vertically arranged so as to form a staggered pattern having an overlapping portion with each endless member of the first traveling mechanism. And a second traveling mechanism in which each endless member is provided with an end surface contact member capable of contacting the front end surface or the rear end surface of the product, and the end surface contact member of the first or second traveling mechanism is provided in front of the product. The product is run at a speed slower than the product feed speed to receive the front end surface of the product, and then the other first or second end surface contact member is run from the rear of the product at a higher feed speed than the product to the product rear end surface. Sandwiching a product traveling by touching the front and back, it slowed while nipping by the travel distance control of the end face contact member, characterized in that stopping the product in place.

Further, the device of the present invention comprises a plurality of endless members arranged vertically above the take-out conveyor, and a first traveling mechanism in which each endless member is provided with an end surface contact member capable of contacting the front end surface or the rear end surface of the product. And a plurality of endless members that are vertically arranged in a zigzag pattern and have an overlapping portion with each endless member of the first traveling mechanism, and each endless member has a front end surface or a rear end surface of a product. A second traveling mechanism having an end surface contact member that is capable of contacting the front end surface of the product, and an end surface contact member of the first or second traveling mechanism that travels in front of the product at a speed slower than the product feed speed. After receiving it, the other first or second end face contact member was made to run from the rear of the product at a feed speed faster than that of the product and brought into contact with the product rear end face to sandwich the running product from the front and back, and to sandwich it. Also decelerated, characterized in that the product by the running distance control of the end face contact member having an end face contacting member travel control unit stopping at a predetermined position.

[Operation] In the above configuration, the product sent to the take-out conveyor travels in front of the product tip at the end face contact member of the first or second traveling mechanism (this end face contact member is The other end face contact member of the first or second traveling mechanism that has traveled at a speed higher than the product feed speed from behind the product rear end after colliding with the mechanism as a stopper (the end face contact member functions as a pusher). ), The rear end surface of the product is pushed, and it is clamped by these two end face contact members during traveling, and the end face contact members decelerate while being clamped,
The end surface contact member that functions as the stopper is stopped at a predetermined position by controlling the travel distance until the stop. In this way, the tip position is determined when stacking products,
Then, the products are sequentially stacked by dropping the product at that position to obtain a predetermined packing shape in which the tip positions are different or the tip positions are aligned.

In this case, the first and second traveling mechanisms are both
Since it consists of a plurality of short endless members instead of a single long endless member, the end-face contact members on one endless member can return to the initial state in a short time and are sent one after another. It can respond to the cycle of. That is, the time cycle is significantly shortened.

The endless member of the first traveling mechanism and the endless member of the second traveling mechanism, which are arranged in a staggered manner, have an overlapping portion, and products can be transferred between the first and second traveling mechanisms. Therefore, there is no inconvenience associated with the division into a plurality of endless members, and it is possible to set the stop position in a wide range at the same time as realizing the above-mentioned drastic shortening of the time cycle.

Further, in the above operation, since the end face contact member that functions as a stopper and the tip of 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 product is stopped while being sandwiched by the two end face contact members, the products are reliably positioned when stopped, the stopping accuracy is improved, and the stacking position accuracy is improved.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

In FIG. 1, 11 is a cold roll forming machine and 12 is a cutting machine. The molded product molded by the molding machine 11 and cut into a predetermined length by the cutting machine 12 is conveyed to the run-out table 13 and sent to the molded product takeout device 14.

Denoted at 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, opens the product A positioned at a predetermined position, drops it left and right, and stacks it on the lifter 16. Reference numeral 17 denotes a photo sensor (product front end detection sensor) for detecting the front end of the product, which is provided at a position slightly upstream of the take-out conveyor 15 as shown in the figure.

Above the take-out conveyor 15, as shown in FIGS. 3 and 4, four sets of first endless belts (first traveling mechanism) 19 arranged vertically in four sets in the feeding direction, and Two sets of second endless rows are also vertically arranged in three sets so as to have a zigzag arrangement having overlapping portions with the first endless belts 19 on both sides in the width direction of each first endless belt 19. A belt (second running mechanism) 21 is provided, and the first endless belt 19 and the second endless belt 21 are provided with a function as a stopper for positioning by hitting the tip of the product and a pusher for pushing the rear end of the product. A first flapper 20 and a second flapper 22 that also have the functions are provided respectively. The first flapper 20 and the second flapper 22 form an end face contact member. The first flapper 20
Are attached to the first endless belts 19 at two positions equally divided in the lengthwise direction through attachment members 20a (see FIG. 5), and the second flapper 22 is attached to each of the second endless belts. The belt 21 is attached via two attachment members 22a (see FIG. 5) at two locations that divide the belt 21 into two equal parts. 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 20 is shown above in FIG. 4 for explanation of the front-back relationship.

As shown in FIG. 5, each of the above-mentioned first endless belts 19
A pulley 25 is fixed to the center of a rotary shaft 24 of a sprocket 23 on the drive side around which a base 27 is fixed to a vertical frame member 26 fixed to a device body frame 36 described later.
The AC servomotor 28 is disposed on the 27, and the pulley 29 fixed to the output shaft of the AC servomotor 28 and the rotary shaft 24
The side pulley 25 is connected by a timing belt 30. The same applies to the second endless belts 21, and the drive side sprocket 31 around which the second endless belts 21 are wound is driven by the AC servomotor 32 for the second endless belt. In FIG. 5, the rotary shaft of the sprocket 31 on the side of the second endless belt 21, the pulley on this rotary shaft, the pulley of the AC servomotor 32, the timing belt to be connected, etc. are the same as those on the side of the first endless belt 19 respectively. It does not appear in the drawing because it overlaps with the drawing on the drawing.

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 AC servo motor 32 on the side is controlled by a flapper traveling control unit (end face contact member traveling control unit) that controls traveling of the first flapper 20 and the second flapper 22, respectively. For the first flapper
20 or the second flapper 22 is controlled to run in front of the product tip that has been sent at a speed slower than the product feed speed to make contact with the product tip surface, that is, to function as a stopper, and The product is fed from the rear of the product at a speed faster than the product feed speed to make contact with the product rear end face, that is, control to function as a pusher, and the product is fed by the front and rear flappers 20 or 22. It is controlled so that it is clamped back and forth in the state, and then stopped at a predetermined position.

Each servo motor 28, 32 by this flapper 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 flapper traveling control as described above. The flapper 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 conveyor 15 and the like of the take-out device 14 will be described with reference to FIG. 5. The take-out conveyor 15 is rotationally driven by an air cylinder 35 about a support 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, and can be opened and closed left and right to drop the molded product A. Further, the left and right intermediate receivers 40 below the take-out conveyor 15 are also attached to the lower end of an inverted L-shaped arm 41 which is rotationally driven by a similar mechanism, and can be opened and closed left and right respectively. The intermediate receiver 40 is for temporarily holding one bundle of products stacked on the lifter 16 while being carried laterally (leftward in FIG. 5). Although the arm 41 is shown in a simplified manner, the shaft portion is formed by a vertical movement mechanism 42 such as a motor, a worm, and a worm wheel.
41a extends downward to lower the intermediate receiver 40.

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 shaped into a predetermined cross-section by the molding machine 11 is cut by the cutting machine 12
Is cut into a predetermined length, sent on the run-out table 13, and sent to the take-out conveyor 15. When the photo sensor 17 detects the tip of the sent product, the detection signal is sent to the flapper travel control unit 33, and the servo motor 28 or 32 is activated by the flapper travel control unit 33 to activate the dimming belt. The rotation is transmitted to the sprocket 23 via the 30, the pulley 25, and the rotary shaft 24, or in the same manner, the rotation is transmitted to the sprocket 31, and the first endless belt 19 or the second endless belt 21 is orbitally driven to rotate the first flapper. 20 or the second flapper 22 is orbitally driven.
In this case, the first flapper 20 and the second flapper 22 function as stoppers for the tip of the product. That is,
For each endless belt 19 or 20, when the product tip approaches, the flapper 20 or 22 in front of the product tip (downstream side; to the right in FIG. 1, etc.) starts running at a speed slower than the product feed speed and runs. While receiving the tip of the product. On the other hand, it functions as a pusher for the rear end of the product. That is, when the rear end of the product passes, it is behind (upstream side;
The flapper 20 or 22 on the left side in FIG. 1 etc. starts traveling at a speed higher than the product feed speed, and catches up with the rear end of the product whose front end is already received by the front flapper. In this way, the front and rear flappers 20 or 22 hold the product from the front and rear sides while traveling, and then the servo motor 28 and
32 is decelerated and the traveling speed of the two flappers 20 or 22 is decelerated and stopped at a predetermined position, thus positioning the product tip on the take-out conveyor 15 at the tip position when stacking the products.

If the position at which the flapper starts traveling and the position at which the flapper should be finally stopped do not fit within the length of one endless belt and straddle a plurality of endless belts, the product is the flapper 20 of the first endless belt 19. To the flapper 22 of the second endless belt 21, or
The flapper 22 of the second endless belt 21 is delivered to the flapper 20 of the first endless belt 19 while being delivered. This is the same both when operating as a stopper and when operating as a pusher. The delivery between the first endless belt 19 and the second endless belt 21 can be accurately realized by the flapper traveling control unit 33 calculating and controlling the moving distance of each flapper. As described above, the first endless belt 19 and the second endless belt 21, which are divided into a plurality of pieces, are arranged in a zigzag manner so that the products can be delivered to each other instead of one long endless belt. 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. The first endless belt 19 and the second endless belt 21
Are arranged in a zigzag pattern with overlapping portions so that when the front end or the rear end of the product is stopped at the boundary position on one of the endless belts 19 and 21 divided into a plurality in the longitudinal direction, the other endless belt This is because it is necessary to deal with it. The length of one of the first end s belt 19 and the second endless belt 21 and the revolving speed must be appropriately set so as to be compatible with the range of the molding speed and the product length.

As mentioned above, the product has two flappers 20 or pushers.
Positioned at 22 and stopped, then the air cylinder
35 operates, the arm 39 rotates about the fulcrum shaft 37, the take-out conveyor 15 opens left and right, and the positioned product is dropped onto the lifter 16. At this time, the intermediate receiver 40 is opened at the position indicated by the chain double-dashed line (see FIG. 5) so that it does not interfere with the product drop.

When the above operations are repeated and the products are stacked in a desired packing form in which the tip position on the lifter 16 is different, the lifter 16 is placed on the upper surface of the transverse feed conveyor chain (indicated by the one-dot chain line (a) in FIG. 5). (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-described product take-out operation, the contact between the tip of the product and the flapper that works as a stopper is a contact at a small relative speed, so the impact force at the time of collision is sufficiently small, so to speak,
It is a soft touch contact. Therefore, the noise is small, and the rigidity of the first endless belt 19, the second endless belt 21, the rotary shaft 24, the vertical frame member 26, the take-out device main body frame 36, etc. is not so required, and the equipment cost becomes large. Increasing equipment costs can be avoided.
Also, the product is prevented from being damaged by impact. Further, the product rear end is pushed forward by the flapper acting as a pusher, and the product is positioned while being sandwiched by the two flappers. Therefore, when the stopper is stopped, the product front end does not recede from the stopper, and the stopper does not move. Accurate positioning is performed as compared with the case of positioning only.

It is not always necessary to deliver the product between the first flapper 20 and the second flapper 22, and by setting a short distance from when the flapper 20 or 22 comes into contact with the front or rear end of the product until it stops, It is also possible to control so that the same flapper performs the operations from the contact of the flappers 20, 22 to the end surface of the product to the stop thereof.

Further, the take-out conveyor 15 may be a driven roller conveyor, but a flapper that works as a pusher in contact with the rear end of the product pushes the product forward in the feed direction, and thus a non-driven simple free roller may be used. When the non-driving free roller is used, noise in the drive mechanism of the take-out conveyor 15, for example, noise due to transmission members such as gears and chains does not occur.

Further, the means for taking out the product from the take-out conveyor is not limited to the one that opens the take-out conveyor 15 to the left and right to drop the product as in the embodiment. For example, a mechanism that holds a product positioned on the take-out conveyor 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, each endless member is composed of a plurality of endless members arranged vertically above the take-out conveyor, and each endless member is in contact with an end face or a rear end face of a product. A first operation mechanism having a member attached,
The first traveling mechanism is composed of a plurality of endless members which are vertically arranged in a zigzag pattern and have an overlapping portion with each endless member, and each endless member comes into contact with a front end surface or a rear end surface of a product. A second traveling mechanism having a possible end face contact member attached thereto, and the end face contact member of the first or second traveling mechanism is made to travel in front of the product at a speed slower than the product feed speed After receiving the contact, the other 1st or 2nd end face contact member is made to run from the rear of the product at a higher feed speed than the product and makes contact with the rear end face of the product to pinch the running product from the front and back, and decelerate while holding it. However, since the product is stopped at a predetermined position by controlling the travel distance of the end face contact member, it is possible to smoothly take out the product in a packing form in which the tip position is changed or the tip positions are aligned. It is possible to improve the stacking position accuracy, further, to reduce the impact force during product collision, reduce noise, and eliminate damage to the product can further reduce equipment costs. If the take-out conveyor is not driven, noise on the take-out conveyor can be reduced.

In addition, each of the first and second traveling mechanisms has a long 1
Since it is not a book endless member but a short endless member divided into multiple parts, the end face contact members on one endless member can return to the initial state in a short time,
It can reliably handle product sills that are sent one after another.
In other words, the time cycle for product removal is greatly shortened.

Since the endless members of the first traveling mechanism and the endless members of the second traveling mechanism, which are arranged in a zigzag pattern, have overlapping portions and can transfer products to each other,
There is no inconvenience caused by dividing into multiple endless members, and at the same time the time cycle is greatly shortened,
It is possible to set the stop position in a wide range.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a molded product take-out apparatus showing an embodiment of the present invention, FIG. 2 is a block diagram showing a control system of the apparatus, and FIG. 3 is a partially schematic plan view of the apparatus. 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. 14 …… Molded product takeout device, 15 …… takeout conveyor, 16 …… lifter, 19 …… first endless belt (first
Traveling mechanism), 20 ... first flapper (end face contact member; stopper and pusher), 21 ... second endless belt (second traveling mechanism), 22 ... second flapper (end face contact member;
Stopper / pusher), 33 ...... Flapper travel controller (end surface contact member travel controller).

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location B65G 57/03 A (56) Reference JP-A 63-12428 (JP, A) JP-A 53-64371 ( JP, A) JP-A-1-285524 (JP, A) JP-B-51-43261 (JP, B2)

Claims (2)

[Claims] 1. A method for taking out a molded product, in which molded products of different lengths sequentially sent to a take-out conveyor are stacked by changing the tip position or aligning the tip positions so as to obtain a desired packing shape. Of a plurality of endless members arranged vertically above the first traveling mechanism in which an end surface contact member capable of contacting the front end surface or the rear end surface of the product is attached to each endless member; Each endless member is composed of a plurality of endless members vertically arranged in a zigzag pattern with overlapping portions, and each endless member is provided with an end face contact member capable of contacting the front end face or the rear end face of the product. A second traveling mechanism attached is provided, and the end face contact member of the first or second traveling mechanism is caused to travel in front of the product at a speed lower than the product feeding speed. After receiving the front end surface of the product, the other first or second end surface contact member is made to run from the rear of the product at a higher feed speed than the product, and is brought into contact with the product rear end surface to clamp the running product from the front and back, A method for taking out a molded product, comprising decelerating while holding the product, and stopping the product at a predetermined position by controlling the travel distance of the end face contact member. 2. A molded product unloading apparatus for stacking molded products of different lengths sequentially sent to a unloading conveyor by changing the tip position or aligning the tip positions so as to form a desired packing load. Of a plurality of endless members arranged vertically above the first traveling mechanism in which an end surface contact member capable of contacting the front end surface or the rear end surface of the product is attached to each endless member; Each endless member is composed of a plurality of endless members that are vertically arranged in a zigzag pattern with overlapping portions, and each endless member is provided with an end face contact member that can contact the front end face or the rear end face of the product. The second traveling mechanism and the end face contact member of the first or second traveling mechanism are caused to travel in front of the product at a speed slower than the product feeding speed, and then the tip of the product. After the surface is received, the other first or second end face contact member is made to travel from the rear of the product at a higher feed speed than the product, and is brought into contact with the product rear end face to sandwich the running product from the front and back, and still hold it An end product contact member travel control unit that decelerates and stops the product at a predetermined position by controlling the travel distance of the end product contact member.