JPH0553708B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Scope of Industrial Application The present invention relates to a buckle folding machine (buckle folding type folding machine) which is arranged parallel to each other in one frame and driven by a common electric motor. Four rollers are provided which are driven in this way, and whose outer peripheral surfaces are in contact with each other in pairs to form one folding position and two successive folding positions. and further provided with one folding pocket before and after the first folding position, an insertion table oriented primarily toward the folding position, and a casing surrounding at least the four rollers and the folding pocket. , the casing has a transfer opening, and three of the four rollers each form a folding position and a second folding position in pairs and together with the insertion table and the transfer opening. , located on one side of the tangential plane extending through the first fold position, and the remaining one
one roller, together with two folding pockets and a drive motor, is arranged on the other side of the tangential plane.

PRIOR ART Bacchulf folding machines of this type are known in the art (German patent no.
856442). In this known buckle folding machine, the folding pockets are formed by arcuately extending slits provided in a plurality of sheet metal partitions. The sheet metal partitions are arranged between the two frame walls at a uniform distance from each other. A drive motor is arranged in a cutout in the partition located between the slits. The insertion table is located above the folded product storage area. The entire frame is completely open. No casing is provided. Paper jams are difficult to avoid in this known bag folding machine. Furthermore, the insertion table and the folded product storage area require a very large amount of space, thereby requiring a large amount of floor space when installing this folding machine. Moreover, in this known folding machine, in order to correctly fold the sheets that are delivered one by one, it is necessary to align them with the guide rails of the insertion table. An insert table is indispensable for perfect folding. Due to the large floor space required and the difficulty of avoiding failures due to paper jams or the like, such backfolding machines are suitable for handling small volumes of mail in offices and other locations. is not suitable for folding, for example in a simple zigzag or roll fold.

Problems to be Solved by the Invention An object of the present invention is to provide a buckle folding machine of the type mentioned at the beginning, which can be manufactured easily and inexpensively, is easy to operate, and can be installed in any office workspace. To provide a space-saving and compact structure suitable for folding a letter consisting of a large number of sheets, for example, DIN (German Industrial Standard) A4 or DINA5 size, one by one. It is. Moreover, it is to be carried out with as little noise as possible and also to provide the possibility that faults caused by paper jams, for example between folding rollers or in folding pockets, can be easily removed even by untrained personnel.

Means for Solving the Problem The present invention solves this problem, in that the frame and the casing completely surrounding the frame are each divided into two parts that can be separated within the tangential plane of the first folding position. , these two parts are foldably and/or releasably connected to each other by a hinge and/or by a self-retaining locking element.

Effect By virtue of this construction, the two frame and casing parts are arranged in the first part in order to make the roller and the folding pocket accessible from the outside over their entire width and over the entire height of the casing. can be separated from each other in the tangential plane area of the folding point, so that sheets that are incorrectly inserted, become combed, or cause some other operational malfunction can be easily removed from the machine. can.

By means of the hinge and/or the locking element, the two parts of the frame and the casing can be simply and easily disassembled from each other and, in particular, reassembled.
In this case, the hinge is arranged near the casing bottom and has a hinge axis running parallel to this casing bottom or to the rollers, or it is arranged with a hinge axis perpendicular to the side wall of the casing. ing.

Embodiment According to an embodiment which is particularly advantageous in terms of space and handling and manufacturing technology, the rollers forming the second folding position with respect to each other are mounted in a frame part that can be folded away from the other two rollers. has been done.

With this arrangement, the roller frame can be opened very easily, for example when a paper jam is deposited, so that all the rollers can be accessed very easily.

At this time, in the foldable frame part,
If the separate casing part with the delivery opening is fixed, a further advantage is obtained that the casing does not have to be opened separately. Opening and closing of the casing and frame takes place together.

If the rollers that are in contact with one another are connected in a known manner in a transmission manner via gear wheels, then the rollers, which are journaled in the frame part on which the electric motor is also mounted, can be continuously connected to the electric motor, for example by means of a belt transmission. A transmission connection is made. When the two frame or casing parts are disassembled and reassembled, the engagement between the gears of the two rollers forming the first folding position is immediately released and brought into engagement again.

With this fold folding machine, for example, if you want to fold only two sizes of paper, DIN A4 and DIN A5, in the same folding format, DIN A4
An immovable stopper can be provided in the folding pocket adjusted to 1/3 of the paper length, and it is also possible to configure the folding pocket to be flat rather than arched in order to obtain a structure as flat as possible. . In order to be able to fold DIN A5 size paper, which is smaller than DIN A4 size paper, into the same folding size, that is, in half.
One of the two folding pockets needs to be closed. This is achieved in a known manner by providing the folding pocket arranged behind the first folding position with an externally adjustable flap which at the same time serves as a guide plate to the second folding position. is achieved.

In order to facilitate the handling of the folding machine according to the invention, it is necessary to manually feed the sheets so that the sheets are It must be aligned before being drawn between two rollers. According to a further embodiment of the invention, this means that the plug-in table or at least the end section of this plug-in table which is oriented towards the plug-in position E is connected to the roller of one of the two rollers forming the plug-in position E. This is achieved by being directed towards the outer peripheral surface of the

Furthermore, if an insertion table is provided that extends diagonally into the casing from the top to the bottom, each inserted sheet (even two or three sheets) can be inserted.
can be aligned automatically or manually before the rollers are rotated. Starting the rollers is facilitated by a manually operable switch. With this switch, the electric motor can thus be switched on and off manually.

For safety reasons and to avoid that the machine is switched on for a longer time than is absolutely necessary, according to a further embodiment of the invention, the insertion table is also A key switch is arranged on the track, which key switch cooperates with an electric or electronic timing element to delay the start of the electric motor when the folded product is inserted and to turn it off again after one working cycle. It's summery.

In order to switch off the electric motor late after the working circuit has been completed, a second part is provided in the area of the running track leading to the transfer opening, which cuts off the electric motor when the folded sheet projects from the transfer opening.
A key switch may be provided.

In this way, the two parts that form the retracted position
By aligning the folded products on the outer circumferential surface of one of the two rollers, it is advantageous that the insertion table can be configured in the insertion direction to such a length that the sheet to be folded can be placed at least almost entirely on it. However, if a motor-driven alignment device is provided, the insertion table can be made significantly shorter in the insertion direction, which results in further space savings. For this purpose, however, a motor-driven aligning device is required to place the front edge of the folded product fed in each case on the outer circumferential surface of one of the two rollers forming the drawing-in position, before the two rollers are rotated. It is necessary to make contact. In order to make this possible, according to a further embodiment of the invention, the switch is switched on without delay by a key switch arranged in the insertion path defined by the insertion table and by a timing element. The motor shaft of the electric motor, which is then switched off again by a second key switch located in the pick-up track or in the take-off track, is brought into transmission connection with the roller via a time delay-responsive clutch.

Such an arrangement provides the advantage that the electric motor for driving the rollers is also used for driving the alignment device.

According to a further embodiment of the invention, the insertion table is provided with a conveyor roller, the outer circumferential surface of the conveyor roller slightly protrudes into the insertion track, and is pressed onto the outer circumferential surface of the conveyor roller. At least two balls or pressure rollers arranged in a stationary manner at a distance from each other as elements are mounted loosely or spring-elastically and rotatably, the conveyor rollers being controlled without delay by a key switch. A direct transmission connection is made to the motor shaft of the switched-on electric motor, with respect to which the roller is driven in each case with a delay by the electric motor via a delayed-response clutch.

According to this type, although a common drive device is provided for the rollers and the conveyance rollers, the retracting position is formed before the rollers that perform the folding product retracting and folding operations are rotated. The still stationary outer circumferential surface of one of the two rollers ensures a reliable and precise alignment of the folded products.

An electronic time switch can be used to delay the electric motor to switch on at the beginning of the folding process and switch off at the end of the folding process, but this time switch requires expensive circuitry. Therefore, according to another embodiment of the present invention, an inexpensive structure
at least one mechanical key switch operated by the folding product or manually is arranged at or near the running track defined by the guide surface for switching on and off the electric motor; Connected in parallel to the key switch is a shield disconnect switch which is operated by the stray magnetic field of the electric motor and which is closed while the electric motor is switched on, and a shield disconnect switch is connected in series with the key switch and the switch. 1 during the folding process.
The rotating cam disc is adapted to be temporarily opened to shut off the electric motor at the end of the folding stroke.

Furthermore, in order to obtain as high a safety factor as possible, according to another embodiment of the invention, even if the transport section between the transport roller, which rotates synchronously with the motor shaft, and the insertion position is long, the outer circumference of the transport roller Since the length is the same as that of the conveyor roller, the front edge of the inserted folded product immediately comes into contact with the surface of the roller to be aligned after one rotation of the conveyor roller, whereas the clutch is configured to have the same length as the motor shaft at the earliest. Connect after about 3 rotations.

In order to further facilitate the operation, it is provided, in accordance with a further embodiment of the invention, that the housing part with the insert table has a platform arranged on the underside of the casing bottom, which platform is located on the front side. It forms an inclined surface that rises from the side to near the partition line of the casing and then descends.

The provision of such a platform ensures that the two casing parts foldably connected to each other via a hinge with a horizontal pivot axis located near the bottom can be The flat bottom makes it easier to fold than the type that rests directly on the table surface. In other words, if the flat bottom rests directly on the table surface, the entire device must be lifted off the table in order to open the casing.

In order to further save space, the insert table has two plate sections hinged to each other, these two plate sections
They are each configured to be pivotable relative to the casing so as to be attached to the casing wall on the outside.

In order to obtain particularly good handling, it is also provided, in accordance with a further embodiment of the invention, that the transfer opening is arranged above the insert table at a distance from the second folding position, the distance being It corresponds to approximately half the final fold size and is at least almost completely covered by the contact surface.

According to such a form, the machine can be adjusted so that each half of the fully folded folded product emerges from the casing and comes to rest protruding from the delivery opening, so that the folded product can be easily removed without falling. It can be removed and does not require any other mounting surfaces protruding from the casing contour.

Embodiment Next, the structure of the present invention will be specifically described with respect to an embodiment shown in the drawings.

The buckle folding machine shown in Figs. 1 to 5 has a total of four rollers W1, W2,
Equipped with W3 and W4. These rollers W1, W
2, W3, and W4 are arranged in the frame 5 so that they extend parallel to each other and their outer circumferential surfaces contact each other as a pair to form a folding position E and first and second folding positions. has been done. The frame 5 consists of two frame parts 5/1, 5/2, and these two frame parts 5/1, 5/
2 each have vertical substrates 11, 12 or 13, 14 extending parallel to each other and connected at a distance from each other by horizontally extending supports 7, 8 or 9, 10, and the contours of these substrates are is a casing 15 that completely surrounds the frame 5.
conforms at least substantially without play to the inner shape of the Substrates 11, 13 and 1 are arranged in the same row in the same vertical plane, respectively.
2, 14 are the vertical terminal edges 16, 17, 18,
19 abut one another in a vertical partition plane 20 and, in the embodiment according to FIG. combined. The hinges 22 are connected to the substrate 1, respectively.
3 or 14, which tongue 24 extends to a certain extent into the substrate 11 or 12 and has a horizontal hole 25 in this position. Inside this horizontal hole 25 is a hinge pin 2 fixed to the substrate 11 or 12.
6 is coming in.

Each latch 23 is pivotably journalled on a horizontal pin 27 of the base plate 13 or 14 in the vicinity of a cover wall 28 (casing wall) of the housing 15 and is provided with a locking pawl 29 (locking member).
This locking pawl 29 is connected to the substrate 11 or 1, respectively.
It engages with the locking pin 30 (locking member) of No. 2 from below in a form-fitting manner. A torsion spring 31 keeps the locking pawl 29 engaged with the locking pin 30.
By means of a cam 33 projecting upwardly through a slit opening 32 in the cover wall 28, the latch 23 is pivoted downwards and the locking connection between the locking pawl 29 and the locking pin 30 is released. Instead of a hinge, a locking device or latch may be provided that allows the two frame parts to be disassembled.

The casing 15 has two parts 15/1, 15/
2, and these two parts 15/1,
15/2 form-fittingly along the partition line 34, however, these two parts 15/1, 1
5/2 is connected in a collapsible manner around a common axis of the two hinges 22 together with the frame parts 5/1, 5/2 attached to these hinges 22 as shown in FIG. However, it is removably assembled.

Three rollers W1, W2 and W4 each forming a folding position E and a second folding position in pairs;
are one above the other in the frame part 5/1 in a vertical plane 35 extending parallel to the partition plane 20,
That is, while the other roller W3 is arranged on the other side of the tangential plane 20', which also extends vertically, at the folding position between the substrates 13 and 14, , rollers W in the substrates 11 and 12 forming the other frame portion 5/2
2 and when the two frame parts 5/1, 5/2 are connected and locked to each other in the manner shown in FIG.
2 and W3 are journalled to form a folding position.

In front and behind the folding position, a folding pocket 36 or 37 is provided with a stationary end stop 38 or 39, respectively, in the frame part 5/2.
is located. These two fold pockets 3
6 and 37 are configured in an arch shape so as to occupy as little space as possible in the vertical direction. An electric motor 40 is provided between the end sections of these folding pockets 36, 37. This electric motor 40
A belt transmission device 42 is provided on the motor shaft 41 . This belt transmission device 42 is a belt 43
It is transmission connected to the belt disk 44 by
This belt disc 44 is fixed to the shaft end 45 of the roller W3. As can be seen in Figure 3, the roller W
3. A gear 47 is provided at the shaft end opposite to the shaft end 45.
is provided. This gear 47 is engaged with a gear 48 of roller W2. The rollers W1 and W2 are also each provided with a gear 48, and these gears 48
Since the rollers W1 to W4 are rotationally connected to the roller W2 in an interlocking manner through the rollers W1 to W4, all the rollers W1 to W4 rotate synchronously in the directions of the arrows. When the casing 15 is opened in two in the manner shown in FIG.
The meshing between the gear 47 and the gear 48 of the roller W2 is released. When the casing is closed, these gears 47, 48 mesh with each other again.

This folding machine is mainly used for postal paper,
In other words, the two stoppers 38 and 39 of the two folding pockets 36 and 37 are used to fold sheets of DIN (German Industrial Standard) A4 size in a so-called roll-folding manner. 37 is arranged such that it has an insertion depth for folded products at least corresponding to approximately 1/3 of the length of the DIN A4 size.

However, as a result of this, there is a possibility that a sheet of DIN A5 size will be folded to the same fold size as that which occurs when rolling and folding a DIN A4 size sheet, so the folding pocket located behind the folding position may be 37 is provided with a flap 49 at its insertion opening 37', which flap 49 is fixed to a shaft 50 extending parallel to the roller W3. By means of this shaft 50, the flap 49 is pivoted from the position shown in solid lines in FIG. 1 in which it forms part of the opening insertion opening 37' to the position shown in broken lines. At the position indicated by this dashed line, flap 4
9 is also used as a turning plate for closing the folding pocket 37 and at the same time guiding the folded product directly to the second folding position. For this purpose, a shaft 50 is rotatably mounted in the two base plates 11, 12 of the frame part 5/2 and extends through a side wall 51, which is shown in side view in FIG. and is extended outward. By means of this adjustment button 52, the shaft 50 is pivoted in the manner described above between the two markings A4 and A5.

In FIG. 3, the second folding pocket 37 is only partially shown for clarity. Axle 50 with flap 49 and adjustment button 52 is also not visible. In addition, rollers W1, W2, W3 and W
4 are of identical construction, each consisting of a metal core 53 and a rubber-like elastic jacket.

2 and 3, instead of the hinge 22 having a common horizontal hinge axis,
The two casing parts 15/1, 15/2 may be connected to each other by a hinge 55, 56 with a common vertical pivot axis 57 and by the two side walls 51, 51/1. In this case the sides facing each other are the two substrates 12 and 14 or the two lateral casing walls 51/2 and 15/3.
It is sufficient to provide one latch 23 which locks the two together.

Otherwise, the two frame parts 5/1,
5/2 must be fixed immovably with the respective casing part 15/1 or 15/2. The hinges 55, 56 having a vertical pivot axis 57, in contrast to the hinge 22 having a horizontal axis, have the advantage that when opening the casing 15, there is no need to lift the casing from its installation surface as shown in FIG. There are advantages.

Whereas the rear end wall 58 of the casing part 15/2 is flat and extends perpendicularly to the bottom 21 of the entire casing 15, the front end wall 59 of the casing part 15/1 is triangular. It has a protruding shaped lower wall section 59/1. This wall section 59/1 extends with respect to the floor plane 60 at an angle α of approximately 45° and at an angle β of approximately 120°.
It transitions into the wall section 59/2 via a bend 61 forming a . This upper wall section 59/2 is provided with a window-like opening 62 through which an insert table 63 is guided into the insertion position E inside the casing. The plug-in table 63 has a total of three parts: a plate 64 fixedly arranged inside the casing and a short plate section 65 extending outwards following this plate 64.
and a long plate section 66 which is continuous with this plate section 65. The two plate sections 65, 66 are connected to each other by hinges 67 of the side wall members 68 in such a way that the plate section 66 can be folded upwards from the position of use shown in FIG. The shorter plate section 65 is additionally engaged via a hinge 69 to the casing part 15/1, so that the two plate sections 65, 66 can Plate section 65 occupies a substantially vertical position and plate section 66
is foldable in the manner shown in FIG. 5 so that it rests on the cover wall 28 of the entire casing 15 in an approximately horizontal position. Insert table 6
In the use position of 5, the two plate sections 6
5 and 66 are located in one inclined plane together with the plate 64. This slanted plane is not directly oriented toward entry position E, but approximately
It is directed toward the outer peripheral surface of the lower roller W1 at an inclination angle γ of 30°. As a result, as long as the sheet 70 inserted by hand into the insertion table 63 remains stationary, the front side edge of each sheet 70 is held at the roller W1.
Directed to the outer circumferential surface of the At this time, the sheets 70 are guided by their own weight to the lower rollers W along the diagonal insertion table 63 and aligned automatically, or alternatively, they are moved downward by hand and aligned. The question of whether to do so is the same either way.
It is left to the user's discretion. On the other hand, in order that the electric motor 40 can be started automatically by inserting the sheet 70 into the insertion table 63, a reflex light barrier is provided in the plate 64. A key switch 71 is arranged. Also, on the other hand,
Sheet 70 is applied to roller W1 which is still stopped.
In order to have sufficient time to align the keys, the key switch 71 is equipped with an electronic timer.
This timing element is connected to the electric motor 4 in relation to the time in which the key switch 71 reacts to the inserted sheet.
0 starts with a delay of a few seconds.
The electric motor 40 is controlled by a further timing element or by a second timing element located behind the folding position.
It is controlled by a key switch and activated for the respective work cycle.

The light beam sent from the key switch 71 is reflected by a guide plate 72 (contact surface) arranged at a small distance from the plate 64, unless a sheet 70 is inserted.
This guide plate 72 has an upper section 73 that is slightly curved upward and enters into the opening 62, and a support plate 74 that extends slightly tangentially to the outer peripheral surface of the roller W2 in the vicinity of the roller W2.
It is equipped with Terminal edge 75 of guide plate 72
A slit-shaped transfer opening 77 is formed between the opening 62 and the upper end edge 76 of the opening 62, over which a further guide plate 78 is arranged. This guide plate 78 guides the folded product 79 coming from the folding position in the running direction into the transfer opening 77 . In this case, the distance of the delivery opening 77 from the second folding position is approximately half the length of the folded product 79. In this way, the folded product 79 is placed on the plate 7 in the state shown in FIG.
It remains supported by the terminal edge 75 of 2. Also, at this position, the folded product 79 is supported by the support plate 74,
It protrudes approximately half way out of wall section 59/2 and remains stationary for easy access. The alternative type of buckle folding machine shown in FIGS. 6, 7 and 8 differs from that shown in FIG. 1 only in the following respects. In other words, the alignment device 80 driven by a motor and the short casing part 1 are placed on a short insertion table 63/1 with a different arrangement.
Another end wall 59/3 of 5/3 is provided, and the inner shape of this end wall 59/3 is similar to that of the rollers W1, W.
It matches the shape of the board bearing W2 and W4. Moreover, the second folding position and the end wall 59/
3, there are two parallel guide plates 81 and 82 (of which guide plate 82
is used as a contact surface).
By providing the motor-driven alignment device 80, the insert table 63/1 can be kept very short and the insert table 63/1
can be arranged so that it is guided to the retracted position E in a raised position rather than in a lowered state. At this time, the folding product to be folded is made by terminating the front end edge of the insertion table 63/1 in the same plane as the installation surface, similar to the insertion table 63/2 in FIG. 9. It is also possible to configure it so that it is sent from the installation surface along the insertion table to the alignment device 80. The insert table 63/1 consists of a guide plate 84 which is guided into the interior of the casing, rising at an angle of inclination δ of approximately 15°, through a slot opening 83 arranged in the lower region of the front end wall 59/3. It's on. The slightly upwardly bent end section 85 of this guide plate 84 is directed above its entry position E toward the outer periphery of the roller W2. On the outside of the front casing wall 51/3, the guide plate 84 is provided with two lateral deflection elements 86. Guide plate 8
4, a second guide plate 87 is arranged inside the casing, extending parallel to this guide plate 84 and keeping a small distance therefrom. A conveyance roller 88 is provided immediately behind the key switch 71 when viewed in the input direction. This conveying roller 88 penetrates the guide plate 84 from below and enters the input track a little, and at least two balls 89 are loosely placed on this conveying roller 88 by their own weight. These two balls 89 are held stationary on the guide plate 87, but rotatably with play in the vertical direction. Furthermore, these two balls 89 maintain a distance from each other in the axial direction of the transport roller 88, which corresponds to at least approximately half the length of the transport roller. The conveyance roller 88 and the two balls 89 are such that the front edge of the sheet inserted by hand is connected to the roller W2.
The sheets are immediately brought close to the outer circumferential surface of the roller W2 in such a manner that they can be aligned on the outer circumferential surface of the roller W2, thereby forming an aligning device 80. For this purpose, roller W2, or all other rollers, must still be stopped while the transport roller 88 is already being rotated.

The electric motor 4 is configured so that the rollers W1 to W4 and the conveying roller 88 can be driven together by the electric motor 40 and rotated at staggered times.
A time-delayed clutch 90 in the form of a centrifugal clutch and a belt transmission 91 are arranged on the motor shaft 4/1. This belt transmission 91 is immovably fixed to the motor shaft 41/1 by means of a screw 92. The belt transmission 91 is in driving connection with a gearwheel 94 via a crossed belt 93 . This gear 94 is connected to the roller W3 on the outside of the substrate 12.
It is rotatably supported on a bearing pin 95 near the lower partition plane 20 . This gear 94 meshes with another gear 96. This further gearwheel 96 is arranged on a bearing pin 97 of the base plate 11/1 and is electrically connected via a belt 98 to a belt transmission 99. This belt transmission device 99 is fixed to the shaft end 100 of the conveying roller 88 . By providing two gear wheels 94, 96 forming a separable transmission clutch, the motor shaft 4
A type of direct transmission connection is formed between 1/1 and the transport roller 88. However, this transmission connection can be immediately separated by opening the two housing parts 15/2 and 15/3 in the manner shown in FIG. 4 or FIG. 3, 15/2 can be immediately re-engaged by closing.

Clutch 90 consists of a disc 101 which is integrally molded onto belt transmission 91. This disk 10
1, two centrifugal weights 104, 105, which are pulled radially inward by tension springs 102, 103 and diametrically opposite each other, are mounted for radial movement. These centrifugal weights 104,
105 has friction linings 106, 10 on the outside thereof.
It has 7. These friction linings 10
When a predetermined rotational speed is obtained, the rings 6 and 107 overcome the tensile forces 102 and 103 directed inward in the radial direction and come into contact with the inner surface of the bowl-shaped ring body 108.
The ring body 108 is equipped with a hub 109 which is designed as a belt transmission. This boss 109 is connected to the motor shaft 41 by a bearing 110 with low friction.
1 and is secured in the axial direction by a safety disc 110'. This clutch 90 is such that when the motor is started, the ring body 108 is entrained once by the abutting friction linings 106, 107 of the two centrifugal weights 104, 105 for approximately three revolutions of the rotating motor shaft. It has been adjusted so that Boss 109 is belt 43
is connected directly to the belt transmission 44 of the roller W3. Therefore, rollers W1, W2,
W3 and W4 are first rotated according to the motor shaft 41/1 when a sheet of paper is inserted into the slit opening 83, and the conveying roller 88 is rotated about three times by this motor shaft 41/1. The conveyance section where the front edge of the inserted sheet travels between the conveyance roller 88 and the outer peripheral surface of the roller W2 is
8 is at least as long as or smaller than the outer circumference of the conveyor roller 88, so that the inserted sheet is at least the same as or smaller than the length of the outer circumference of the conveyor roller 88, so that after at least one revolution of the transport roller 88, and before the roller W2 rotates together with the other rollers W1, W3 and W4, the inserted sheet will pass through the roller. They can be reliably aligned on the outer peripheral surface of W2.

The folding process is the same in all examples. The aligned folded products are transported by rollers W1 and W.
2. When W3 and W4 rotate, they pass through the entry position E and first pass through the inside of the folding pocket 36 to the stopper 3.
It hits number 8 and stops. Next, the folded product is placed in the first
A second fold is formed at the second folding position, the paper passes through the folding position, passes through the folding pocket 37, and reaches the stopper 39, and then a second fold is formed at the second folding position, reaching the delivery opening 77, and this delivery opening 7
It can be taken out by hand from 7. When folding DIN A4 size sheets, this folding process can be performed in a roll-folding manner. When folding a sheet of DIN A5 size, first switch the adjustment button 52 from adjustment position A4 to A5, then the flap 49 occupies the position shown in FIG. Pocket 37 is closed. The folded product emerging from the folding pocket 36 through the first folding position is deflected directly into a second folding position from which it reaches the transfer opening 77 again.

These folding steps are performed on the casing 15 or 1.
It is clear that this can be done in the closed state of 5'.

If a sheet jams in the casing, for example in the folding pocket or between the two rollers, this can be done by manipulating the latch 23 and opening the casing in two in this manner to expose the folding pocket and the rollers. It can be removed by Once the cause of the malfunction has been easily eliminated in this way and the casing 15' has been closed and locked again, the buckle folding machine is again ready for operation.

In the embodiments of FIGS. 1, 4 and 6, in which the horizontal hinge axis of the hinge 25 is located near the casing bottom 21, when opening in the manner shown in FIGS. Its adjustment surface, for example on the casing part 15/1 or 15/3 in which the insert table 63 or 63/1 or 63/2 and the rollers W1, W2 and W4 are arranged, in order to avoid having to lift it off the table. It is advantageous to provide a platform 111.
This platform 111 rises from the front side to near the partition line 34 of the casing and descends from there to form an inclined surface 112 (see FIG. 9). The platform frame 111 is made up of two plate-shaped pedestals 113 and 114 arranged below the casing bottom 21 and spaced apart from each other. This slope 1
12, the entire folding machine in its closed state has an inclined position that rises from the front side towards the rear, but this does not have an adverse effect on the mode of action, handling and operation, but rather The advantage is that the rear casing part 15/1 can be opened easily, as can be seen in FIG.

All illustrated embodiments of the buckle folding machine have the advantage of a compact, ie space-saving, construction and ease of operation and handling. Rollers W1 to W4
The casing 15 or 15', which completely surrounds the folding pockets 36, 37, not only provides contact protection to prevent accidents, but also has an equally effective noise-absorbing effect. In this case, the noise prevention effect is achieved by the casing 15 or 1
It is further improved if the casing 5' is made of a sound-insulating material or the inside of the casing is lined with a sound-insulating material.

11, 12 and 13 show further sectional views or front views of further embodiments. Also in this embodiment, the alignment device 80/1
is provided. Aligning device 8 according to this embodiment
0/1 consists of a roller 88 provided on the shaft 100 and a number of pressure rollers 89/1. These pressing rollers 89/1 instead of the balls 89 provided in the embodiment of FIG.

All parts in FIGS. 11 to 13 that are the same as those in the embodiment shown in FIGS. 1 to 10 are marked with the same reference numerals. This figure 11~
The embodiment shown in FIG. 13 is as shown in FIGS.
Unlike the embodiment shown in FIG. 10, it has a stationary frame section 5/4. On this stationary frame part 5/4 the rollers W1 and W3 are fixedly bearing, while the two other rollers W2, W4 are fixedly mounted on the movable frame part 5/3.
bearings. This movable frame part 5/3 itself consists of two frame plate bearing tongues 24/1 forming the movable frame part 5/3.
It is rotatably supported on a shaft 100 by. In FIG. 11, which shows the folding machine in the closed operational readiness state, the roller W2 is shown in the conventional manner, on the one hand forming the folding position E with the roller W1, and on the other hand forming the first folding position with the roller W3. There is. In this case too, the partition plane lies in the tangential plane 20'. In the open state, the movable frame part 5/3 occupies the position shown in FIG. 12, so that the two folding pockets 36, 37 and 4 are
All rollers are well accessible. A movable casing part 15/4 is fixed to this frame part 5/3. This housing part 15/4 has a slot-like delivery opening 77/1 and also has a removable support 77/2 for temporarily accommodating an additional folded product 79.

The following is clear from the drawings: In this example, therefore, a significantly smaller frame portion 5/3 and a significantly smaller casing portion 15/4
are arranged more movably than in the embodiments of FIGS. 1 to 10 above, and the roller frame and the opening of the casing are arranged in such a way that the movable casing part 5/3 with the movable casing part 15/4 This can be done simply by pivoting the casing 15/5, without having to move the remaining casing 15/5 in any way. In the stationary frame part 5/4, a guide plate 84/1 is arranged between the alignment device 80/1 and the entry position E. This guide plate 84/1 likewise has an end section 85 which is at least slightly bent. This end section 85 is adapted to guide the front edge of the inserted folded product toward the outer peripheral surface of the roller W2. This causes the leading edge of the folded product to be aligned as shown in FIGS. 6 and 9. As shown in Figure 11,
The folded product to be folded is placed in a slit-shaped supply opening 8.
3/1 to the alignment device 80/1.
In this case, the obliquely extending casing surface 84/2 of the casing part 15/5 is used as a guide surface. In this embodiment, the above-mentioned FIGS.
In contrast to the embodiment according to FIG. 0, an undivided housing base 21/1 is provided, on which the stationary housing part 15/5 rests.

Shaft 10 with rollers 88 of alignment device 80/1
0 is driven in a manner similar to that shown in FIGS. 6, 7 and 8 or 9. Of course, there are the following advantages in this case. That is, since the entire alignment device 80/1 is bearing on the stationary frame part 5/4, the two gear wheels 9
4,96 can be omitted, and the belt transmission 99 of the shaft 100 can be connected to the motor shaft 4 by means of the belt 98/1.
A direct transmission connection with the 1/1 belt transmission 91 is possible. This also provides further simplification.

Electric motor 4 configured as a split pole motor
11, 12 and 13, a control device (schematically shown in FIG. 14) is used to control 0. The control device has two parallel connected manually operated key switches T1 and T2. These key switches T1, T2 are connected to the stationary casing part 15/1 next to the slit-like supply opening 83/1.
It is located at 5. A switch S1 in the form of a closing switch is also connected in parallel to these two key switches T1 and T2. This switch S1 is arranged near the yoke 40/1 of the electric motor 40 and is closed by the switch lever 120 as soon as the electric motor 40 is started by operating the two key switches T1 or T2. Ru. That is, the switch lever 120 is attracted by the yoke 40/1 due to the magnetic stray electric field, and the switch S1 is closed. Key switch T1 or T2 is thus opened again, but the motor remains switched on via switch S1.

Within the array of switches S1, T1 and T2 is a slit switch T operated by a cam disk 121.
3 is placed. The cam disk 121 has a switch cam 122 with a very short outer circumference and is driven in the clockwise direction via a friction lining 123 directly by, for example, the shaft 124 of the roller W1 in the following manner. . That is, during the folding operation, the cam disk 121 rotates once, and the switch cam 122 is driven in such a manner that the shingle cutting switch T3 is temporarily opened. By temporarily opening the disconnect switch T3, the coil 40/2 of the electric motor 40 is temporarily disconnected. This breaks the electromagnetic field and the switch S1 opens immediately. This is Switchcam 1
Closing of the cut-off switch T3 again after 22 has passed means that the motor is kept switched off. According to FIG. 14, the coil 40/
One coil end 125 of 2 is the key switch T.
1, T2 and the stationary contacts of switch S1, whereas the other coil end 12
6 is directly connected to the current source 127. The movable contacts of the two key switches T1, T2 and switch S1 are connected to the stationary contacts of the breaker switch T3, the movable contacts of the breaker switch T3 being connected to the other pole of the current source 127. There is.

This switchgear operates as follows.

The front edge of the sheet to be folded is located at the supply opening 83/
1 until it comes into contact with the roller 88 or the pressure roller 89/1, the motor 40 is switched on by actuating the two key switches T1 or T2. At this time, the electromagnetic field instantaneously generated pulls the switch lever 120 and closes the switch S1. This switch S1 maintains the automatic control state until the motor is cut off again by opening the cut-off switch T3 at the end of the folding process. In this embodiment, the motor shaft 41/1 is equipped with a flip disc (not shown) in order to achieve slow rotation. For example, the disk 101 shown in FIG. 7 can be constructed as a bounce disk. This delayed rotation allows the roller W to remain stationary in communication with the centrifugal clutch.
2 begins to rotate and start pulling the folded product,
Roller W on which the sheet whose leading edge is conveyed to the outer periphery of roller W2 by alignment device 80/1 is stationary
2 will ensure alignment. The cam disk 121 is also rotated by the rollers W1 to W4. At this time, the gear ratio between the shaft 124 of the roller W1 and the cam disc 121 is such that the cam disc 121
1 is rotated exactly one revolution, which causes the shrinkage switch T3 to be temporarily opened and then closed again. Also in this example,
The spring disk works as follows. In other words, when the motor 40 is cut off when the cut-off switch T3 is opened, the cam disk 121 does not stop instantaneously, but rotates by an angle of approximately 10° to 15° before stopping. It acts on

The control device has the advantage that it does not require any electrical components and therefore has a high degree of reliability, low susceptibility to failure and, furthermore, low manufacturing costs.

Effects As described above, the present invention is simple to manufacture, inexpensive to manufacture, easy to operate, has a compact structure that saves space, and has low operating noise. A buckle folding machine was obtained that can easily remove paper jams that occur.

[Brief explanation of the drawing]

1 is a cross-sectional view of a buckle folding machine according to an embodiment of the present invention, FIG. 2 is a partial side view of a casing portion, and FIG. 3 is a horizontal cross-section of the buckle folding machine according to FIG. 1. 4 is a cross-sectional view of the buckle folding machine according to FIG. 1 in a state opened in two, and FIG. 5 is a view of the insertion table of the buckle fold folding machine according to FIG. 1. A cross-sectional view showing only the casing part in the folded state.
6 is a side view, partially cut away, of a buckle folding machine according to another embodiment of the invention with an alignment device for folded products; FIG. 7 is a partially cutaway side view of a buckle folding machine according to FIG. FIG. 8 is a sectional view taken along the line - in FIG. 6; FIG. 9 is a cross-sectional view of the buckle folding machine according to FIG. 6 in the open state; FIG. 9 is a front partial view of the buckle folding machine according to FIG. 9, FIG. 11 is a cross-sectional view of a buckle folding machine according to another embodiment, and FIG. 12 is a buckle folding machine according to FIG. 11. 13 is a front view of FIG. 11, and FIG. 14 is a schematic circuit diagram of the drive control type of the buckle folding machine according to FIG. 11. W1, W2, W3, W4...roller, 5...frame, 5/1, 5/2, 5/3, 5/4...frame part, 7, 8, 9, 10...post, 11,
12, 13, 14... Board, 15, 15'... Casing, 15/1, 15/2, 15/3, 1
5/4, 15/5...Casing part, 16,1
7, 18, 19... End edge, 20... Partition plane, 20'... Tangent plane, 21, 21/1... Casing bottom, 22... Hinge, 23... Latch, 24... Tongue piece, 24 /1...Bearing tongue piece, 2
5... hole, 26... hinge pin, 27... pin,
28...Cover wall, 29...Latching pawl, 30...
Locking pin, 31...Torsion spring, 32...Slit opening, 33...Cam, 34...Partition line, 35
... Vertical plane, 36, 37 ... Folding pocket, 3
7'...Insertion opening, 38, 39...Terminal stopper,
40...Electric motor, 40/1...Yoke, 4
0/2...Coil, 41, 41/1...Motor shaft, 42...Belt transmission device, 43...Belt,
44... Belt disc, 45, 46... Shaft end, 4
7, 48...gear, 49...flap, 50...
Shaft, 51... Side wall, 51/2, 51/3... Casing wall, 52... Adjustment button, 53... Metal core, 54... Jacket, 55, 56... Hinge, 57... Rotating shaft, 58, 59...end wall, 5
9/1, 59/2... Wall section, 59/3... End wall, 60... Floor plane, 61... Curved portion, 62...
Opening, 63, 63/1, 63/2... Insert table, 64... Plate, 65, 66... Plate division, 67... Hinge, 68... Wall member, 6
9... Hinge, 70... Sheet, 71... Key switch, 72... Guide plate, 73... Division, 74... Support plate, 75, 76... End edge, 7
7, 77/1...Delivery opening, 77/2...Support part, 78...Guide plate, 79...Folded product, 8
0,80/1...Alignment device, 81,82...Guide plate, 83...Slit opening, 83/1...Supply opening, 84,84/1...Guide plate, 8
4/2...Casing surface, 85...Terminal section, 8
6... Direction changing member, 87... Guide plate, 88
...Transport roller, 89...Ball, 89/1...Press roller, 90...Clutch, 91...Belt transmission device, 92...Screw, 93...Belt, 94...
Gear, 95... Bearing pin, 96... Gear, 97...
...Bearing pin, 98,98/1...Belt, 99...
... Belt transmission device, 100 ... Shaft, 101 ... Disk, 102, 103 ... Tension spring, 104, 1
05... Centrifugal weight, 106, 107... Friction lining, 108... Ring body, 109... Boss,
110...Bearing, 110'...Safety disc, 11
1... Platform frame, 112... Inclined surface, 113, 11
4...Pedestal, 120...Switch lever, 121
...Cam disc, 122...Switch cam, 123
...Friction coupling, 124...Shaft, 125,
126...Coil end, 127...Current source,
...Folding position, A4, A5...Marking, E
...Input position, S1...Switch, T1, T2
...key switch, T3...shrink switch,
α, β, γ, δ...Inclination angle.

Claims (1)

[Claims] 1. A bucket folding machine, comprising:
Four rollers W1, W2, W3, and W4 are provided in one frame 5 and are arranged parallel to each other and driven by a common electric motor 40, and each of these four rollers has a pair of outer peripheral surfaces. The folding pockets 36 and 37 are in contact with each other to form one folding position E and two consecutive folding positions. Plug-in table 63, 63/1, 63/2 directed towards insertion position E
and at least the four rollers W1, W2, W
3, W4 and a casing 15 surrounding said folding pockets 36, 37, said casing 15 having delivery openings 77, 77/1, three of said four rollers each forming an input position E and a second folding position in a pair and being arranged together with the insertion table and the delivery opening on one side of a tangential plane 20' extending through the first folding position; ,
The remaining one roller has two folding pockets 36,
37 and the drive motor 40 together with the tangential plane 2
In the type placed on the other side of 0',
two casing parts 5/1, 5/2 and two frames in which the frame 5 and the casing 15, 15' completely surrounding this frame 5 are separable in the range of the tangential plane 20' of the first folding position; It is divided into parts 15/1, 15/2, and 15/3, and these two parts are the hinge 2.
Burkle folding machine, characterized in that it is foldably and/or releasably connected to one another by means 5, 55, 56 and/or by locking members 29, 30 with self-retaining action. 2 The two rollers W2 and W4 that form the second folding position with each other are connected to the other two rollers W1 and W4.
2. Buckle folding machine according to claim 1, wherein the buckle folding machine is mounted in a frame part 5/3 which is foldable in a direction away from W3. 3. Buckle folding machine according to claim 2, in which a separate casing part 15/4 with a delivery opening 77/1 is fastened to the foldable frame part 5/3. 4 Rollers W1, W2 that are in contact with each other; W2,
W3 and W2, W4 are gears 47 and 48, respectively.
Claim 1, which is transmission-connected via
The buckle folding machine according to any one of paragraphs 1 to 3. 5. Buckle folding machine according to claim 1, in which the folding pockets 36, 37 with stationary stops 38, 39 are at least partially arch-shaped. 6 The folding pocket 37 arranged behind the first folding position can be closed by means of an externally adjustable flap 49, which at the same time serves as a guide plate to the second folding position. A buckle folding machine according to claim 1. 7 The plug-in table 63, 63/1 or at least the end section 64, 85 of this plug-in table which is oriented towards the plug-in position E
The buckle folding machine according to any one of claims 1 to 4, wherein the buckle folding machine is directed toward the outer circumferential surface of one of the two rollers W1 or W2 forming the folding machine. 8 Insert table 63, 63/1, 63/2
The key switch 7 enters the trajectory defined by
1 is arranged, and the key switch 71 cooperates with an electric or electronic timing element to delay the switching on of the electric motor 40 when inserting the folded product and to switch off again after one working cycle. A buckle folding machine according to claim 1 or claim 7. 9 switched on without delay by a key switch 71 located in the entry track defined by the plug table 63/1 and by a timer or by a second key switch located in the removal track. The motor shaft 41/1 of the electric motor 40, which is then switched off again, is connected to the rollers W1, W via a clutch 90 which responds to the time delay.
8. The buckle folding machine according to claim 1 or 7, wherein the buckle folding machine is adapted to be electrically connected to W2, W3 and W4. 10 A conveyance roller 88 is provided on the insertion tables 63/1 and 63/2, and the conveyance roller 8
The outer circumferential surface of 8 is slightly protruding into the entering orbit,
At least two balls 89 or pressing rollers 89/1 as pressing members, which are fixedly arranged at a distance from each other, are loosely or spring-elastically mounted on the outer circumferential surface of the conveying roller 88 so as to be rotatable. The conveyance roller 88 is driven by the electric motor 4 which is switched on without delay by the key switch 71.
0 motor shaft 41/1, and rollers W1, W2, W3, W4
10. A bucket folding machine according to claim 9, wherein the buckle folding machine is adapted to be driven in each case with a delay by the electric motor 40 via a delay-responsive clutch 90. 11. The buckle folding machine according to claim 8, wherein the length of the conveyance section between the conveyance roller 88 and the loading position E is the same as the outer circumferential length of the conveyance roller 88, even if it is long. 12 At least one mechanical key switch T1 operated by a folding product or manually in or near the running track defined by the guide surface 84/2 for switching on and off the electric motor 40 , T2 are arranged, and connected in parallel to the key switches T1, T2 is a break switch S1 which is operated by the stray magnetic field of the electric motor 40 and which is closed while the electric motor 40 is switched on. A shedding cutoff switch T3 is connected in series with key switches T1, T2 and switch S1, and the shedding cutoff switch T3 is electrically operated at the end of the folding process by a cam disc 121 that rotates once during the folding process. 11. A buckle folding machine as claimed in claim 1 or claim 10, which is adapted to be temporarily opened to cut off the motor. 13 The housing part 15/3 with the plug-in table 63/2 has a platform 111 arranged below the housing bottom 21, which platform 111 extends from the front side to the partition line 34 of the housing 15/1. Slope 1 that rises to the vicinity and then descends
12. A buckle folding machine according to claim 1, wherein the buckle folding machine is configured to have a shape of 12. 14 The insert table 63 has two plate sections 65, 66 hinged to each other, which are attached to the casing 15 on the outside, respectively, to the casing walls 59/2, 28. 2. A buckle folding machine as claimed in claim 1, which is pivotable relative to the folding machine. 15 The delivery opening 77 is connected to the insertion table 6
3, 63/1, 63/2 at a distance from the second folding position, this distance corresponds to approximately half of the final fold size, and at least almost completely covers the contact surfaces 72, 82. A buckle folding machine as claimed in claim 1, wherein the folding machine is covered by a folding mechanism.