JPS6218321B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transportation roller that is constantly driven at the same circumferential speed as a pressing roller for carrying a strip-shaped or thin plate-shaped material made of plywood or synthetic resin, and a material that can be inserted and removed in a radial direction. a press roller that presses the corner of a workpiece of a corner gluing machine, having a freely rotating press roller that presses the workpiece against the transport roller in the inserted state and a quick-cut cutter that is arranged between the press roller and the transport roller; The present invention relates to a device for supplying materials to a person.

This type of equipment has proven to be effective in practice and can be used universally because both strips and strips of material can be processed without major preparation changes. It is.

When a strip of material is processed by such a known device, the lifting suction device removes the strip of material at the forefront of the stack of strips deposited in the respective magazine. The front end of the pressing roller pivots between the stack and the lifted strip of material, and subsequently the strip of material is directed from the pressing roller to the constantly driven transport roller. Lift as much as possible when pressed. The strip-shaped material, which now lies between these rollers, is then pulled out of the stack via transport rollers and inserted by its front end into the wedge-shaped gap between the pressure roller and the corner of the workpiece. It can be done. As soon as the pressure roller has picked up the strip-shaped material and pressed it against the corner of the workpiece, the pressure roller is removed from the transport roller. The strip-like material is now entrained by the workpiece and withdrawn from the device. If the workpiece to be glued to the material is shorter than the length of the strip-like material, the quick-cutting cutter placed between the pressure roller and the transport roller is activated and the workpiece is glued to the length of the corner of the workpiece. The required length is cut from the strip of material (by a limit switch controlled by the workpiece). Then, the supply of the beginning of a new strip of material is carried out until the pressure roller and the workpiece receive the beginning of the strip of material, a new insertion of the pressing roller and the feeding of the strip of material to the transport roller. This is done by pressing.

On the other hand, if a strip of material is to be processed, the magazine of strip material is removed and placed flat on a table or disk with a vertical axis next to the magazine. The front end of the roll of band material being placed must be placed in the material passage path between the transport roller and the associated pressing roller. The feeding of the front end of the strip-shaped material and the acquisition of the strip of material of the required length for each corner of the workpiece to be glued then takes place in the same manner as for the strip-shaped material.

In the case of the above-mentioned processing of strip-shaped material, a new separate process begins when the preceding strip-shaped material passes by the transport roller with its trailing end and is carried out by the lifting suction device. It has the disadvantage that it can only be started once. In other words,
The insertion of the pressing roller, the arrival of the lifting suction device on top of the stack of material, the lifting of the front end of the next strip of material from the stack by the lifting suction device and the new insertion of the pressing roller are preceded by the arrival of the lifting suction device on top of the stack of material. It can only begin when the rear end of the plate-like material has passed the transport rollers. Therefore, a certain distance arises between the rear end of the preceding strip-like material and the front end of the following strip-like material, which contributes to the succession of workpieces in the machine, i.e., the feed through the machine. determines the spacing of the workpieces to be glued and therefore influences the machining capacity of the machine, ie the effective length of the corner of the workpieces to be glued per unit time.

Now, if the speed of passage of the workpiece through the machine is increased, this has the disadvantage that the processing capacity of the machine does not increase proportionally to the speed of passage of the workpiece. The reason for this goes back to the fact that the operating speed of the lifting suction device cannot be increased beyond a certain value. This is because lifting suction devices can no longer reliably suction plate-like material above a certain speed. Therefore, the operating speed of the lifting suction device is essentially constant, so that increasing the workpiece passage speed necessarily results in too large a workpiece spacing and therefore , resulting in only a relatively small increase in the machine's production capacity.

The object of the invention is, in keeping with this fundamental concept, which has proven to be effective, to provide a device of the type mentioned at the outset, in the case of the processing of sheet-shaped materials.
Even at high passing speeds of the workpieces, the distance between the workpieces is kept as small as possible, so that the machining capacity of the machine is reduced, thereby reducing drawbacks with respect to breakdowns and the possibility of using common materials. The goal is to expand so that it can be improved without sacrificing anything.

This object is achieved according to the invention by arranging, in the material passage path upstream of the transport roller, a feed roller with an attached insertable and removable pressing roller, which is always driven at a higher circumferential speed than the transport roller. It is solved by

By arranging according to the invention a feed roller rotating at a higher circumferential speed than the transport roller in front of the transport roller, the strip-like material lifted in each case by the lifting suction device is From the stacking, the conveying roller feeds the strip-like material to the pressure roller at a certain speed that is greater than the speed at which the strip-like material is carried by the workpiece after being picked up by the pressure roller. It is removed and transported to transport rollers. Based on this mode of operation, the following strip-like material tracks at a higher velocity P than the preceding strip-like material, and thus between the strip-like materials based on the constant working mode of the lifting suction device. The spacing of the workpieces can be significantly reduced by rapid subsequent transport, so that the spacing of the workpieces fed through the machine can be reduced. Moreover, due to the increased circumferential speed of the feed roller, the respective strip-shaped material is quickly drawn out of the area of the lifting suction device, so that the lifting suction device can start a new work cycle earlier. You will be able to start with This accelerated state of readiness of the plate-like material is
With the arrangement according to the invention, this is achieved without increasing the operating speed of the lifting suction device, so that the lifting suction device can be driven at the optimum operating speed.

A mechanically simple construction is obtained in that the drive of the supply roller is connected with the same rotational speed to the transport roller via a chain or belt. A higher circumferential speed of the supply roller relative to the transport roller is achieved in such a case simply by the larger outer diameter. In one recommended embodiment, the diameter ratio is 1:1.15.

In order to avoid an expensive cam arrangement, it is expedient for the pressure roller of the feed roller to be inserted and removed via a bent lever linkage connected to the pneumatic main actuating cylinder. In this case, the bending lever linkage preferably consists of two pivotably interconnected one-armed levers, at the connection point of which the piston of the main cylinder is mounted, in which case the first lever The free end of the second lever is pivotable about a pin fixed in place, and the free end of the second lever is pivotable about a pin fixed in place.
It is pivoted to one arm of a third lever bent into an L-shape, and its second arm supports the journal of the pressing roller. In this case, the lifting suction of the magazine on the strip-shaped material is
It is expedient to arrange it at the end of the fifth lever, which lever is connected via an operating rod to the second arm of the third lever, which supports the journal of the pressure roller.

In addition to its simple construction and its reliable mode of operation, such an arrangement also has the advantage that emptying strokes of the main working cylinder per working cycle are avoided. Because, due to the bent lever linkage, one working cycle is carried out by driving the piston outward and the other working cycle by driving the piston inward of the main working cylinder. It is from.

Furthermore, in such an arrangement, a journal fixed in place is fixed on one arm of the two-armed L-shaped fourth lever, and a second actuating lever is attached to the other arm. Advantageously, the cylinder can be mounted. With such an arrangement, the pressing roller is moved via a bent lever linkage onto its main working path of its main working cylinder. The actual pressing process of the pressing roller in the radial direction against the supply roller on its own small path can be carried out precisely and quickly via the second actuating cylinder.

The configuration according to the invention allows the use of common materials, ie the processing of strips and strips of material, while maintaining the basic concept that has proven to be effective. The use of this common material is further improved according to the invention in that, in addition to the transport roller, a second transport roller is provided which has an attached insertable and removable pressing roller. I can do it. The pressing rollers of the first and second transport rollers each have a
It is expedient for it to be pluggable and unmovable via its own pneumatically actuated cylinder. Therefore, in addition to the main passageway, another secondary passageway is created in close proximity, via which the strip of material of the second material roll is processed for this purpose without the need for changes in the preparation. be able to. In each case, the following mode of operation is possible because of the transport rollers, which are present for each path and have an associated, respectively separately controllable pressing roller. In other words, (1) the length of the strip of material is 1.1 the total length of the strip, 1.2 the supply of only one type of material as a piece by charging the quick-cutting cutter, and (2) the length of the strip of material passing through the main passage path. One type of supply (3) Only one type of supply of material in the form of a strip via a secondary path (4) In the case of a series of operating machines and workpieces that remain the same, without any preparatory modifications, the supply of material in the form of a strip ( (5) Conversion of material in the form of strips (main passage path) from material in the form of strips (main passage path) (5) In the case of an operating machine and a succession of the same workpieces, the material in the form of strips (main passage path) can be changed without preparatory modifications. from the passing route) to the strip of material (secondary passing route)
(6) Alternate transport of different strips of material via the main or secondary passageways; (7) Superimposed feeding of strips of material via the main or secondary passageways.

According to the invention, the transport roller and the feed roller are always arranged between the corner of the workpiece and the strip or strip of material to be fed. Therefore,
Disturbances due to roller scratches in the material on the visible side of the plywood are avoided, since there the flat pressing roller simply rolls on its outside.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings showing embodiments thereof.

As shown in FIGS. 1 and 2, in the feeding situation, i.e. in the case of processing a strip of material which is taken from two rolls of strip material W1 and W2, on the upper side of the magazine plate 1 there is a Rollers 2 and 3 and pairs of rollers A, B and C are arranged. The deflection roller 2 together with the roller pair A and B forms a main passage path H, while the deflection roller 3 and the roller pair C form a secondary passage path N.
The two passage paths H and N meet approximately in one place S at the edge of the right magazine plate and are concentrated through the gap of the quick-cutting cutter 6 formed by the cutting plate 4 and the cutting cutter 5. drive.

In the feeding situation shown in FIG. 3, in which either the material in the form of strips or the material in the form of a strip of the roll W2 of material in the form of a material is processed, the deflection roller 2
is removed from the magazine plate 1. In this state of supply, the strip-shaped material has the shape of strip-shaped material stacked on top of each other in the stack 7;
It is brought into the main passageway H by means of a lifting suction device 8 (which will be explained in more detail later). The strip-shaped material pulled out from the strip-shaped material roll W2 via the sub-passage path N is processed.

Both in the supply state and in the supply state;
The material passes between the cutting plate 4 and the cutting cutter 5 of the quick cutting cutter 6 and is then passed through the pressure roller 9 of the corner gluing machine.
and the workpiece 11 which is moved in the direction of the arrow 10 beside the roller 9 into a wedge-shaped space. As soon as the material is captured by the workpiece 11, as it travels further,
The workpiece is pulled out of the device without the support of roller pairs A, B and C.

The mode of operation of the device according to the invention in the feeding state shown in FIGS. 1 and 2 is as follows.

The front end drawn out of the web W1 of material in the form of a strip lies in the main passage H between the roller pair B consisting of the transport roller 12 and the pressing roller 13. The pressing roller 13 is connected to the operation cylinder 14
radially inserted and retracted, i.e. pressed against the transport roller 12,
Alternatively, it can be removed from the transport rollers 12. The roller pair A, which lies upstream in front of the transport rollers 12 of the roller pair B in the main passage path H, consists of a supply roller 15, whose diameter is smaller than the diameter of the transport rollers 12. bigger. Supply roller 15
is likewise associated with a pressing roller 16, which can be pressed against the supply roller 15 in the radial direction via a link arrangement, which will be explained in more detail later, or can be removed from it. During the processing of the material of the roll W1 of material in the form of a strip, the pressing roller 16 is removed from the supply roller 15, so that the material can freely pass between the two rollers 15 and 16. Make it. Now, when a signal is given via the limit switch by the front corner of the workpiece that is traveling by, the pressing roller 1 of roller pair B
3 is pressed by a transport roller 12 which is constantly rotating at the same circumferential speed as the pressure roller 9. The transport roller 12 entrains the strip of material by friction and transports it between the cutting plate 4 and the cutting cutter 5 and between the pressure roller 9 and the workpiece 11. Workpiece 11
As soon as the pressure roller 9 has captured the front end of the strip of material, the actuating cylinder 14 receives a signal and moves the pressure roller 13 away from the transport roller 12 . Then, the workpiece 11 and the pressure roller 9 are
The quick cutting cutter receives a signal (controlled by a limit switch by the rear corner of the workpiece 11).
The band material is pulled out from the roll W1 until the band material is cut.

This process is repeated anew as each workpiece 11 passes by.

Now, if the roll of material in the form of a strip W1 is to be empty or transferred to the material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material roll W1, the material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a material in the form of a roll W1 is empty or is to be transferred into a material web of material in the form of a material in the form of a web W2, the roller pair C in the sub-passage path N is actuated; , transport roller 17
and a pressing roller 18, and the roller 18, like the pressing roller 13, can be pushed in and removed via an operating cylinder 19. The operating mode within the sub-passage path N is as follows:
This corresponds to the mode of operation in the main passageway H described above. The material of the strip-shaped material rolls W1 and W2 can therefore also be processed one after the other or, if necessary, alternately, without the need for preparatory modifications of the equipment for this purpose. If necessary, roller pairs B and C can also be driven "superimposed" for a completely separate mode of operation. That is, the beginning of a new strip of material can also be conveyed between the pressure roller 9 and the workpiece 11 superimposed on the end of an old strip of material.

In the feeding situation shown in FIG. 3, in which strips or strips of material can be processed alternately or one after the other, the lifting suction device 8 in each case removes the frontmost strip. The front end of the shaped material 20 is lifted into the position shown in FIG. During this lifting process of the lifting suction device 8, the pressing roller 16 of roller pair A is in its displaced position behind the striking rod 21 against the front corner of the strip-shaped material. Then, the thin plate material 2
As soon as the front end of 0 is in the position shown in FIG. Supply roller 15 of pressing roller 16
The thin plate-like material is stacked by pressing on 7
and is brought to a feeding position between its pair of rollers B via the main passage path H. Then, the workpiece 11 traveling nearby operates and gives a signal to the cylinder 14, thereby causing the cylinder 14 to
presses the pressing roller 13 against the transport roller 12, and the strip-like material is inserted between the pressing roller 9 and the workpiece 11.

During the course of this insertion process, the lifting suction device 8 has already moved the next thin plate material into the magazine 7.
and is pressed against the supply roller 15 by the pressing roller 16. Supply roller 15
has a larger circumferential speed than the transport roller 12, so that the captured subsequent strip material can be moved out of the device by the preceding strip material passing between the pressure roller 9 and the workpiece 11. than the speed at which it is drawn out,
It is withdrawn from the stack 7 at a greater speed and brought to the supply state.

Therefore, the distance between the rear corner of the leading strip-like material and the front corner of the following strip-like material is reduced, thereby making it possible to reduce the distance between the rear corner of the leading strip-like material and the front corner of the following strip-like material, thereby making it possible to The spacing between the sheet materials is significantly reduced, so that the spacing between the workpieces running through the machine can be reduced.

The movement of the lifting suction device 8 and the pressing roller 16 of the supply roller 15 is controlled by a lever mechanism located below the magazine plate 1, which mechanism is shown in FIGS. 3 and 4.

As can be seen from Figures 3 and 4, magazine plate 1
The main operating cylinder 22 is located below, but its piston is bent and the lever link mechanism 2
It is attached to 3. This link mechanism 23
consists of a first one-arm lever 24 and a second one-arm lever 25, and the piston of the main operating cylinder 22 is attached to the connection point between these levers 24 and 25. ing. The free end of the first lever 24 is pivotable about an axis 26, while the free end of the second lever 25 is connected to one arm of a third lever 28 which is bent into a two-armed shape. The second arm 29 supports the journal of the pressing roller 16.

The journal 26 is fixed on one arm 30 of the fourth lever, and on the other arm 32 a second actuating cylinder 33 is attached.

The lifting suction device 8 is placed at the end of a fifth lever 34, which lever 34 is connected via an operating rod 35 to the second arm 29 of a third lever 28, which supports the journal of the pressing roller 16. .

This arrangement allows the main actuating cylinder 22 to be bent due to the lever linkage 23 and the lifting suction device 8
A complex operating cycle is carried out in each case by means of outward or inward movements, whereby:
This has the advantage that the stroke of the main working cylinder 22 is eliminated.

The main actuating cylinder 22 pivots the pressing roller 16 through the maximum part of its path of movement, while the second actuating cylinder 33 performs the last part of the insertion movement, so that the pressing process of the pressing roller 16 is precise. It has the advantage of being adjustable.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the entire embodiment of the device of the present invention in a feeding state, FIG. 2 is an enlarged front view of its magazine plate, and FIG. 3 is an enlarged front view of FIG. 2 in a feeding state. FIG. 4 is a reduced view showing the link arrangement shown in FIG. 3. 7... Magazine, 12, 17... Transport roller,
14, 19... pneumatic actuation cylinder, 15... supply roller, 13, 16, 18... pressing roller,
22...Pneumatic main operating cylinder, 23...Bent lever link mechanism, 24, 25...Single arm lever, 26...Fixing pin, 27, 29...Arm, 2
8, 31... lever, 30, 32... arm, 33...
...Operating cylinder, 34...Lever, 25...Operation rod.

Claims (1)

[Claims] 1. A transport roller that is constantly driven at the same circumferential speed as the pressing roller for carrying a strip or thin plate-like material made of plywood or synthetic resin, and a roller into which the material can be inserted and removed in the radial direction. In a device for feeding material to a pressing roller pressing a corner of a workpiece of a corner gluing machine, having a quick-cutting cutter placed between the freely rotating pressing roller pressing it against the transport roller in a state , characterized in that a feed roller 19 with an insertable and removable pressing roller 16 is arranged upstream from the transport roller 12 in the passage path of the material and is always driven at a higher circumferential speed than this roller. Device. 2. The device according to claim 1, wherein the supply roller 15, which is driven at the same rotational speed as the transport roller 12, has a larger diameter than the transport roller 12. 3. The apparatus according to claim 2, wherein the diameter ratio of the transport roller 12 and the supply roller 15 is 1:1.15. 4. Device according to claim 1, 2 or 3, characterized in that the pressure roller 16 of the supply roller 15 can be inserted and removed via a pneumatic main actuating cylinder 22. 5. Device according to claim 4, characterized in that the pressing roller (16) can be inserted and removed via a bending lever linkage (23) by means of a pneumatic main actuating cylinder (22). 6 The bent lever linkage 23 connects two pivotably interconnected one-arm levers 24, 2.
5, at the connection point of which the piston of the pneumatic main working cylinder 22 is mounted, and the free end of the first lever 24 is pivotable about a pin 26 fixed in place; The free end of the second lever 25 is pivoted to one arm 27 of a two-armed, L-shaped third lever 28, the second arm 29 of which supports the journal of the pressing roller 16. An apparatus according to claim 5, wherein the apparatus is configured as follows. 7 The pin 26 fixed in place has two arms,
One arm 3 of the fourth lever 31 bent into an L shape
7. Device according to claim 6, in which the other arm 32 has a second actuating cylinder 33 attached thereto. 8 a lifting suction device 8 for the magazine 7 against the strip-shaped material is arranged at the end of the fifth lever 34;
8. The device according to claim 4, wherein the device is pivotable via a pneumatic main operating cylinder. 9. Device according to claim 8, characterized in that the fifth lever (34) is connected via an operating rod (35) to the second arm (29) of the third lever (28) which attaches the journal of the pressure roller (16). 10. Device according to claim 1, 2 or 3, characterized in that, in addition to the transport roller 12, a second feed roller 17 is provided with an attached insertable and removable pressure roller 18. 11. According to claim 1 or 10, the pressure rollers 13, 18 of the first and second transport rollers are respectively insertable and removable via their own pneumatically actuated cylinders 14, 19. Device. 12 Transport rollers 12, 17 and supply roller 15
11. The device according to claim 1, wherein the material is arranged between a corner of the workpiece and the strip-like and strip-like material to be fed.