JPH01171846A - Sealing device - Google Patents

Abstract

PURPOSE:To improve the activity rate of a sealing device, by removing an object to be sealed from a pair of rollers when said object to be sealed clogs between said rollers. CONSTITUTION:An application sealing device 10 is provided with a first through third pairs of rollers 100 which are comprised of upper application rollers 14A-14C and lower application rollers 19A-19C confronting to the respective upper rollers 14A-14C, at a position 3 on a trestle 11 along a flowing direction of an object to be sealed. When a form clogs between the pair of rollers 100, a detecting device provided with passing sensors 62, 64 detects the generation of the clogging. In response to the detecting operation of the detecting device, namely, the controlling operation by a controlling device 41 based on a signal indicative of an abnormality, a gap controlling motor 31 which constitutes a rotary angle adjusting device is driven, so that the gap between the rollers is enlarged. Accordingly, the form clogging between the rollers can be easily removed in a short time. Thus, the activity rate of the sealing device 10 is improved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to stacking objects to be sealed such as multiple sheets of envelope paper, postcard paper, etc., or folding one sheet of objects to be sealed, etc. The present invention relates to a sealing device that joins under overlapping conditions.

[Prior Art] In the manufacturing process of multi-fold (bi-fold, tri-fold, etc.) envelopes, postcards, etc., sealing devices are used to join these forms (sheets) together.

Conventional sealing devices forcibly drive both rollers that are supported by a pedestal and constitute a roller pair, and the objects to be sealed are fed between these rollers in an overlapping state and pressed together to join the objects. Nattiru.

In addition, in the above-mentioned conventional sealing device, when an object to be sealed becomes clogged between both rollers constituting a roller pair, a clogging detection device detects the occurrence of the clog, and the forced drive state of both rollers is manually detected by the operator. It is designed to be stopped by operation or automatic control.

[Problems to be Solved by the Invention] However, in the sealing device, since the gap between the rollers in the pair of rollers is very small, even if both rollers are stopped as described above at the time of occurrence, the sealing target that has become clogged Objects cannot be easily removed from between the rollers.

According to the present invention, when an object to be sealed becomes clogged between both rollers of a pair of rollers, the clogged object to be sealed can be easily removed from between both rollers in a short time, thereby increasing the operating rate of the sealing device. The purpose is to improve.

Means for Solving the Problems] The present invention forcibly drives both rollers that are supported by a pedestal and constitute a roller pair, and supplies the object to be sealed in an overlapping state between the two rollers and pinches the object. The sealing device for joining objects to be sealed includes a gap adjustment device that adjusts a gap between both rollers constituting a roller pair, and a gap adjustment device that is driven by input of an abnormal signal to enlarge a gap between both rollers constituting the roller pair. A control device is provided.

[Operation 1 According to the present invention, when an abnormal signal is input to the control device,
The gap adjusting device is activated by the control operation of the control device to enlarge the gap between the two rollers. As a result, the clogged object to be sealed can be easily removed from between both rollers in a short time, and the operating rate of the sealing device can be improved.

[Example] Fig. 1 is a partially cutaway front view of a crimp seal device according to an embodiment of the present invention, Fig. 2 is a side sectional view of Fig. 1, and Fig.
The figure is a schematic diagram showing a drive system for a pair of rollers.

The pressure sealing device 10 has an upper pressure roller side plate 12 fixed to both sides of a pedestal 11, and a first pressure roller side plate 12, a first pressure roller side plate 12, a second pressure roller side plate 12, and a second pressure roller side plate 12 fixed on both sides of a pedestal 11. Third upper pressure roller 14 (14A
-14C).

The crimping sealing device 10 also supports a lower crimping roller base 16 via a gap adjustment screw 15 on a pedestal 11, and lowers the lower crimping roller base 16 at each of three positions along the flow direction of the material to be sealed on both sides of the lower crimping roller base 16. The pressure roller bearing stand 17 is fixed, and a bearing 18 is attached to each lower pressure roller bearing stand 17.
The first, second) and third lower pressure rollers 19 (19A
~19G).

That is, the pressure sealing device filO has upper pressure rollers 14A to 14C and a lower pressure roller 19 at each of three positions along the flow direction of the object to be sealed on the pedestal 11.
Three sets of roller pairs too (100A to 100C), first to third, each forming a pair with each of rollers A to 19C are provided.

As detailed below, the pressure sealing device MIO sets the gap between the upper and lower rollers 14 and 19 in each roller pair lOO to the optimum gap g necessary to obtain the optimum pressure bonding force for the form as the object to be sealed. At the same time, both the upper and lower rollers 14
, 19 are forcibly driven, and the foam is fed between the two rollers 14 and 19 in an overlapping state and pinched, so that the foam is pressed and joined.

Below, first, the northward roller 14 in each roller pair lOO
, 19 will be explained.

That is, as shown in FIGS. 1 and 2, the crimping sealing device 10 stores the spring receiving part 211 of the spring receiving part 20 installed on the pedestal 11 in the lower crimping roller base 16.
The spring 22 interposed between the spring receiver 21 of 20 and the lower pressure roller base 16 adjusts the gap installed between the lower pressure roller base 16 and the pedestal 11 (the rust 15 is held under pressure). ing. <The hole provided in the wedge 15 and through which the bolt 20 passes is a long hole portion 23 that is long in the direction of movement of the wedge 15.

Further, the lower pressure bonding roller base 16 has both side surfaces in the roller axis direction guided by the pedestal 11, and screw shaft housings 24 each fixed to the pedestal 11 on both side surfaces in the direction perpendicular to the roller axis.
It is guided by each of the guide plates 25. Further, the bearings 18 mounted on both sides of the lower pressure roller 19 are mounted on the bearing stand 17 as described above, and are guided by the vertical wall surface of the window 26 provided in the upper pressure roller side plate 12. ing.

A feed screw shaft 28 is supported via a bearing 27 in the screw shaft housing 24 which is fixed to the pedestal 11 as described above.
The feed screw shaft 28 is screwed into a nut 29 fixed to the end face of the gap adjusting screw 15. On the other hand, a rotation angle control motor (stepping motor, pulse motor, servo motor, etc.) 31 is attached to the mount 11 via a mounting plate 30, and the rotation of the motor 31 is controlled by a toothed pulley 32), a toothed belt 33, and a toothed pulley. 34 to the feed screw shaft 28. That is, when the feed screw shaft 28 is driven by the operation of the one-rotation angle control motor 31, the gap adjustment wedge 15 moves between the pedestal 11 and the lower pressure roller base 16.
1, and moves up and down the set level of the lower pressure bonding roller base 16 relative to the pedestal 11, whereby each roller pair 1
The gap between the upper pressure roller 14 and the lower pressure roller 19 in 00 is adjustable.

A sensor dog 35 is provided on the gap adjustment wedge 15, and an origin sensor 37 is provided on the pedestal 11 via a mounting plate 36.
A rising end sensor 38 is provided. Further, the rotation angle control motor 31 is provided with a sensor cam 39 having a slit, and the pedestal 11 is provided with an origin sensor 40.

Further, the crimp sealing device 10 has a control device 41 and a form type setting device 42. The control device 41 is the input/output section 4
3. It consists of a CPU 44, a RAM 45, and a ROM 46.

Here, the crimping sealing device 10 is configured such that: (1) the origin sensor 37 is turned on by the sensor dog 35 provided on the gap adjustment wedge 15 mentioned above, and the origin sensor 40 is turned on by the sensor cam 39 provided on the rotation angle control motor 31; 19
(1) The state in which the rising end sensor 38 is turned on by the sensor dog 35 is the rising end of the lower pressure roller 19.

In addition, in the pressure sealing device 10, the lower pressure roller 1
The gap between the upper pressure roller 14 and the lower pressure roller 19 when the pressure roller 9 is at the descending origin is actually measured and stored in the ROM 46 of the control device 41 as the maximum gap C.

Therefore, the ROM 46 of the control device 41.

For each type of foam, the optimal gap g required to obtain the optimal pressure bonding force is stored in advance according to the paper thickness of the foam, the number of stacked sheets, etc. As a result, the control device 41
The type of foam to be crimped this time is the foam type setting device 4.
2, the optimal gap g for the form;
From the above-mentioned maximum gap C, calculate the current upward control amount d of the lower pressure roller 19 from the descending origin using d = c - g, and calculate the rotation amount of the rotation angle control motor 31 that matches this upward control amount d. The rotation amount is set digitally, and the motor 31 is driven and controlled using this rotation amount. This causes the motor 31 to move to the feed screw shaft 28.
The gap adjustment wedge 15 is moved by an appropriate amount via the . Create the required optimum gap.

Next, the upper and lower rollers 14.1 in each roller pair 100
The forced drive mechanism No. 9 will be explained.

That is, the crimp seal device 10, as shown in FIG.
A drive pulley 48 disposed on a drive motor 47 and each roller pair 100 (100A-Zo).

C) Each lower pressure bonding roller 19 (19A to 19C)
An endless chain 50 is wound around each of the driven pulleys 49 (49A to 49C) provided in the drive pulleys 49 (49A to 49C). 51 and 52 are idle pulleys. As a result, the pressure sealing device RIO transmits the rotational force of the drive motor 47 to each lower pressure roller 19, and transfers the rotational force transmitted to each lower pressure roller 19 to the lower pressure roller 19 of each roller pair 100. The signal is transmitted to the opposing upper pressure roller 14 through a gear 53 and a gear 54 provided on the upper pressure roller 14 . In addition, in FIG. 3, 200 is a form.

Furthermore, the sealing device 10 has a clogging detection device as described below that detects the occurrence of foam clogging between the upper and lower rollers constituting each roller pair lOO.

That is, this clogging detection device is, for example, the foam introduction conveyor 61 of the sealing device 10! - first roller pair 10
0A, and an exit side passage sensor 64 provided between the foam discharge conveyor 63 and the 30th pair 100c. The entry side passage sensor 62 and the exit side passage sensor 64 are formed of a form 200.
generates an on-signal when passing through, and transfers this on-signal to the control device 41. The control device 41 includes an entrance passage sensor 62
A counter (not shown) is incremented by the ON signal of the exit passage sensor 64, and the counter is subtracted by the ON signal of the exit passage sensor 64. When the counter value exceeds a preset value, the 10th-Ra pair 100A
It is determined that the form 200 is clogged between the 30th and 30th pairs 100C.

Therefore, the control device 41, on the condition that the detection device detects the occurrence of foam clogging as described above,
■ Automatically stop and control the roller drive motor 47 described above to stop the forced drive state of the rollers in each roller pair lOO, and ■ operate the rotation angle control motor 31 described above to increase the roller gap between each roller pair 100. g is rapidly expanded toward the maximum gap C. Note that the above operation (2) can be replaced by stopping the roller drive motor 47 by a manual operation by an operator who recognizes the alarm, which is made up of sounds, lights, etc. from an alarm device activated by the control device 41.

Next, the operation of the above embodiment will be explained.

According to the above embodiment, when a foam blockage occurs between both rollers of each roller pair 100, the blockage detection device having the passage sensor 62, 64 immediately detects the occurrence of the blockage, and furthermore, the blockage detection device operates to detect the blockage. That is, the gap control motor 31 constituting the rotation angle adjusting device is operated by the control operation of the control bag 941 based on the abnormal signal, and the gap between the two rollers is expanded. Thereby, the clogged foam can be easily removed from between both rollers in a short time, and the operating rate of the sealing device 10 can be improved.

In the above embodiment, the case where the gap between both rollers is automatically enlarged based on the detection operation of the detection device has been described, but when a blockage occurs, the operator operates an activation switch such as a push button, This operation signal may be configured to be input to the control device as an abnormal signal.

Furthermore, in addition to the above embodiment, after removing the clogged foam, the roller gap may be returned to the state before the expansion by pressing a return button or the like.

Furthermore, the present invention is widely applicable to both devices having a single pair of pressure rollers and devices having a plurality of pairs of pressure rollers. In an apparatus equipped with a plurality of pressure roller pairs,
The gap between each pressure roller pair may be individually adjustable.

Furthermore, of the upper and lower pressure rollers, the upper pressure roller side may be moved up and down by a wedge, or both the upper and lower pressure rollers may be moved up and down by wedges.

Further, in carrying out the present invention, the wedge driving means includes a stroke control cylinder device that is supported by a frame and moves the wedge, and a control device that drives and controls the stroke control cylinder device based on the amount of gap that should be provided between the pressure rollers. It may also consist of

Furthermore, in the implementation of the present invention, the detection device may have other configurations that do not use the one-pass sensor 62,64.

Furthermore, in implementing the present invention, the gap adjustment device may have another configuration that does not use a wedge.

The object to be sealed to which the present invention is applied can be applied to any bonding property, such as one that has adhesive properties due to heat, or one that has adhesive properties only due to pressure.

[Effects of the Invention] As described above, according to the present invention, when an object to be sealed is stuck between both rollers of a pair of rollers, the object to be sealed can be easily removed from between the rollers in a short time. This can improve the operating rate of the sealing device.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of a crimp seal device according to an embodiment of the present invention, FIG. 2 is a side sectional view of FIG. 1, and FIG.
The figure is a schematic diagram showing a drive system for a pair of rollers. DESCRIPTION OF SYMBOLS 10... Pressure sealing device, 11... Frame, 14... Upper pressure roller, 15... Gap adjustment wedge, 19... Lower pressure roller. 28... Feed screw shaft, 31... Rotation angle control motor, 41... Control device, 62.64... Passage sensor. Agent Patent Attorney Osamu Shiokawa Figure 2 Figure 3

Claims (4)

[Claims] (1) In a sealing device that forcibly drives both rollers that are supported by a pedestal and constitute a roller pair, and supplies an object to be sealed between the two rollers in an overlapping state and presses it to join the object to be sealed, It is characterized by having a gap adjustment device that adjusts the gap between the two rollers constituting the roller pair, and a control device that drives the gap adjustment device by inputting an abnormal signal to enlarge the gap between the two rollers constituting the roller pair. Sealing device. (2) In claim 1, the gap adjusting device is provided with a gap adjusting wedge between at least one roller support part of the roller pair and the pedestal, and a wedge driving means for moving the wedge. A sealing device consisting of. (3) Claim 1 or 2 is characterized in that the abnormal signal is an output signal from a detection device that detects clogging of the object to be sealed between both rollers constituting a roller pair. Sealing device. (4) The sealing device according to claim 1 or 2, wherein the abnormal signal is an operation signal from an operation switch such as a push button.