JPH02109046A - Pressure applying device - Google Patents

Abstract

PURPOSE:To miniaturize the pressure applying device, and also, to reduce its manufacturing cost by rotating one of work rolls by one driving source, and also, executing a separating/contact operation of the other work roll opposed thereto. CONSTITUTION:A rotational force storage device T of a pressure applying device for pressing a sheet-like substance is provided with a cam mechanism consisting of a nip use cam roll 127 and an intermediate roll 126, etc., for constituting a cam axis, by which the lower work roller 112 is brought to separating- contact operation. In this case, in a pressure developing device 300, between a work roll 107 of the upper side and a roll 112 of the lower side, a photosensitive recording medium 108 and developing paper 127 are superposed and pass through, while pressing force is being applied simultaneously, and immediately after the developing paper 127 comes out of the work roll, a cam mechanism is operated, and the roll 112 and the roll 107 are separated. Subsequently, the recording medium 108 being in a state that there is no developing paper 127 is pressed, a capsule on the recording medium 108 is separated, and while the developing paper 127 is not fed, necessity for rotating the roll 107 is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pressurizing device for pressurizing sheet materials such as photosensitive recording media and developer paper for color copying machines.

[Conventional technology]

As an example of a pressure bone Ij-device for pressurizing a sheet-like material, there is a color image 1 recording device M as shown in FIG. This color image one-image recording device M has a mask original creating section 700 consisting of a monochrome laser printer, and this mask original creating section 700 is placed on a color image recording section 701. In the mask original creating unit 700, a mask original 703 is created, and this mask original 70
3 is sent into an exposure device 702 installed in the center of the color image recording section. In this exposure device 702, an exposure device 7 [ ] 6 is installed so that it can move back and forth in 14 directions, and a photosensitive recording medium 708 extends from the exposure position of this exposure device 702, and this photosensitive recording medium is attached to a cartridge. 709, the mask original 70 is
It is designed to be exposed through 3. The exposed photosensitive recording medium 708 is then fed into the pressure developing device 705 from the cassette 704 to a developing paper 720.1! : The images on the photosensitive recording medium A are transferred to the color developer paper 720 after being superimposed, and the color developer paper after the transfer is discharged to the paper discharge tray 711. The photosensitive recording medium 708 is wound up by a winding roll 710. The pressure developing device 7()5 passes two work rolls 107 and 112 between which the photosensitive recording medium 7C) 8 and the developing paper 720 superimposed thereon pass.

As shown in FIG. 8, the pressure developing device 705 has a frame 120, and an upper frame 1.30 is provided at the upper part of the frame 120. This upper frame 130
A spring 122 is provided therein, the spring force of which can be adjusted by means of a screw 121, and the lower end of this spring 122 presses against a support member 123, which supports the backup rollers 1.13, 1.13. There is. These backup rollers 11.3, 113 support the upper work roll 1, 07, and this upper work roll 107
is rotated by drive motor 128.

On the other hand, below the frame 120 is an F frame 124.
A backup roll 125 is supported on two sides of this F frame 124, and this backup roll 125 supports the lower work roll 112, and a photosensitive recording medium and a color developer paper are provided between the rolls 107 and 112. pass together. An intermediate roll 126 is supported on the lower surface of the F frame 124, and this intermediate roll 126 is in contact with a nip cam roll 127 that rotates eccentrically.
This nip cam roll 127 is rotated by a drive motor 129, thereby causing the intermediate roll 126,
The work roll 112 on the F side moves toward and away from the work roll 107 on the upper side facing the F side via the lower frame 124 and the backup roll 125.

[Issue that Ichimei tries to solve]

However, in the conventional pressure device 1 and device 705, two drive motors are required: an AI drive motor 128 for rotating the upper work roll 107 and a drive motor 129 for rotating the nip cam roll 127. However, since these drive motors 128 and 129 require human power, not only does the device itself become expensive, but also the pressure developing device 105 becomes large.
I had a husband.

Therefore, the present invention provides a single drive motor that requires large output.
One object of the present invention is to provide a pressure applying device which requires only one pressure applying device and can be manufactured into a miniature and can be miniaturized.

[L stage for solving problems]

Therefore, the present invention provides +7. A plurality of work rolls facing each other are placed in a direction, at least one of the work rolls is placed so as to be able to move toward and away from the other work rolls, and a sheet-like material is passed between the work rolls facing each other. The pressure port is configured to apply pressure to the sheet-like material by applying a rotational driving force to rotate a work roll opposite to the separating work roll. As a power source for the contact device, this contact and separation device consists of a rotating cam mechanism.
A rotational force storage device is connected to the camshaft of M, and the rotational force of the work roll facing the separation work roll is transmitted to the rotational force storage device to store the rotational force, and this # product is The generated rotational force was released by a release device to rotate the rotary cam machine (1 inch camshaft).

[Effect]

A rotary drive source is connected to one of the plurality of work rolls facing the work roll, and this rotary drive source is further used as a power source for a work roll approaching/detachment device that is capable of approaching and separating the work roll facing the work roll. The rotational force is transmitted to the camshaft in the rotating cam mechanism of the device, and a rotational force storage device is connected to this camshaft, and the rotational force of the drive source is stored in this rotational force reduction h7 device, and this rotational force accumulation The device is released by a release device at a predetermined timing. With this configuration, one drive source provides the power source for the device for moving the work rolls that are installed so that they can move toward and away from each other, and only one drive source is required, making the device more compact and inexpensive. can be manufactured.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

1 and 2, a pressure developing device 300 to which the present invention is applied has a frame 120, and an upper frame 130 is provided above the frame 120.
Inside this upper frame 130 are springs 122, 122...
122 is disposed, the lower end of this spring 122 abuts on support frames 12'3, 123, . . . , 123, and this support frame 123 backs up the backup roll 113.

This backup roller 113 is the upper work roll 1
07 is suppressed downward, and the lower work roll 112 is opposed to the upper work roll 107 in a contact/separation manner. The pressing force between these two work rolls 107.1.1.2 is adjusted by rotating the adjusting screw 121 relative to the upper plate P of the frame 120. Said frame 1
A lower frame 124 is provided on the do side of the lower frame 124, and a lower backup roll 12 is provided on the upper part of the lower frame 124.
5 is supported, and an intermediate roll 126 is engaged with this frame 124, and this intermediate roll 126 is moved up and down by an eccentrically arranged nip cam roll 127. This nip cam roll 127 is arranged as shown in FIG.
iI at a predetermined timing within the range LtfJ of 80″:
Recapturing the turn and reversal.

That is, the bearing portion 190 of the side plate of the casing 120 that supports the nip cam roll 127 has a stop surface that acts to stop the nip cam roll 127 when the nip cam roll 127 rotates forward or reverse in the range 1/11 of 1.80'. 12
8a and 1.28a are formed, and this stop surface 1
The protrusions 127a formed on the nip cam roll 127 abut against the nip cam rolls 128a and 128a, thereby regulating normal and reverse rotation within a range of 18 (3 degrees) of the nip cam roll 127.

A reduction gear device 15 is connected to the protruding end of the upper work roll 107 to the outside of the casing 120 via a coupling 151.
0 is connected, and a drive motor 1 is connected to these reduction gears 1 and 50.
28 are connected.

A sprocket 153 is disposed in front of a protruding shaft 152 protruding from the reduction gear 150, and an upper end portion of a chain 154 is engaged with the sprocket 153.

This pressure developing device 300 uses the driving force of the drive motor 28 to transfer the driving force of the drive motor 28 to the lower work roll 112.
The driving force of the drive motor 128 can be used as a power source for the engagement and separation operations of the sprocket 1.
53 and a chain 154, the torque is transmitted to the rotational force storage device T. The rotational force storage device T has a case 156 that houses a helical spring S attached to one end of a shaft 158, and the case 156 that houses the helical spring S is rotatably attached to the support 158. There is. As shown in FIG. 4, a ratchet gear 157 is mounted in a circular tube in the boss portion 156a of the case 156, and the ratchet teeth 157 cooperate with a pawl 159, and the pawl 159 meshes with the teeth of the ratchet gear 157. Accordingly, only rotation in the one-horn direction is permitted. A string-wound spring S as shown in FIG. 3 is housed in the case 156, and its inner end S
, is a circular tube attached to the shaft 158, and its outer end So is accommodated in the case 156.

On the other hand, a ratchet tooth 160 is further formed on the shaft 158, and a pawl 161 is engaged with the ratchet tooth 160, and this pawl 161 is operated by a solenoid 162. That is, this claw 161 has the function of stopping the clockwise rotation of the shaft 158. In FIG. 2, the shaft 15
A gear 161 is placed at the left end of the figure in Figure 8.
A gear 162 is provided apart from If, 161, and the southeast 162 is accommodated in the bearing protruding end of the nip cam roll 127.

A variable transmission mechanism (MR) is provided between the gears 161 and 162, as shown in FIG. It has a gear 163 that meshes with the gear 161, and a gear 162 that is fixed to the protruding end of the nip river cam roll is located apart from these gears 161 and 163. A freely movable lever 200 is connected, and this lever 200 is swung by solenoids 203 and 204 provided at both ends thereof.

A gear 201 is provided on the upper part of this lever 2 (,) 0, a gear 202 is provided on the F side of the lever 200,
These gears 201 and 202 mesh with the gear 162.

The solenoid 203 is used to rotate the nip cam roll 127 in the forward and reverse directions.

Interchange the operation of 204 r7. and set the gear 201 to 16.
’3 or the teeth! The fi 202 is directly aligned with the gear 161 by one precision.

Next, the operation of the present invention will be explained.

The rotational force accumulating device T has a cam mechanism consisting of a nip cam roll 127 and an intermediate roll 126 that constitute a camshaft.
The cam mechanism operates as follows.

In the pressure developing device 300, the photosensitive recording medium 108 and the color developing paper 127 are overlapped between the upper work roll 107 and the lower work roll 112, and are passed through while being simultaneously applied with a pressing force. Immediately after the developer paper leaves the work roll, it is necessary to operate the cam mechanism to separate the lower work roll from the upper work roll. That is, if a photosensitive recording medium without developer paper is pressed, the capsules on the photosensitive recording medium will break and the roll will become dirty. Said work roll 1.07
Since it is not necessary to rotate while the developer paper is not being fed, the coupling 151 releases the power transmission between the work roll 107 and the drive motor 128 at that time. In this state where power transmission is canceled, the rotational force of the drive motor 128 is transferred to the speed reducer 150 and the sprocket 15.
3. Rotate the ratchet wheel 157 and the helical spring S 156 via the chain 154 and sprocket 155. Now, if the rotational driving force is applied in the time direction 1 as shown in Fig. 4, then in Fig. The rotational force is applied to the helical spring Mla. At this time, the ratchet gear 16
0 and the action of the pawl 161, the shaft 158 rotates at 0 and 1. has been done. The helical spring forming the rotational force storage device d therefore exerts a force on said shaft 158 tending to rotate it clockwise. In this state, when the solenoid [62] is pulled, the pawl 161 moves against the bottle 16.
It rotates about 1a to release the ratchet gear 160 and at the same time release the shoulder 158.

Therefore, the lever 158 rotates clockwise, thereby causing the gear 161 attached thereto to rotate in the J1 direction. At this time, whether the rotational force is forward or reversed as shown in FIG. J-transmission machine fM
R operates at the same time, for example, solenoid 2
03 and meshes the gear 163 with the gear 201, the clockwise rotation of the shaft 158 is transmitted as the counterclockwise rotational force of the gear 162, and this is coupled to the If you attract 202, gear 16
1 and CM 'ti 2 f) 2 mesh with each other, and the clockwise rotation of the gear 161 is transmitted as the clockwise rotational force of the gear 162. Note that it is not necessary to store the rotational force in the rotational force storage device only when the coupling 151 is disconnected to cut off the transmission of the rotational force of the drive motor 128 to the work roll 107 as described above; This can be done even when the transmission force of the drive motor 128 is being transmitted to the work roll 107 on the upper side of one grip via the coupling 151.

In the present invention, the pressure phenomenon device is
Although the present invention has been described as an example of a pressure applying device, the principles of the present invention can also be applied to other pressure applying devices such as a rolling device.

[Efficacy of invention]

Since the present invention is configured as described above, one drive source rotates one of the work rolls, and the other work roll facing the same is moved toward and away from the work roll.
If the pressure applying device can be manufactured at low cost, it can be manufactured compactly.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of a pressure developing device which is an example of the present invention, Fig. 2 is a vertical sectional view of the pressure developing device of the present invention, Fig. 3 is a front view of a rotational force accumulating device, and Fig. 4 is a rotating A front view of the ratchet mechanism of the force storage device. Figure 5 is a configuration diagram of the 1F reverse = iJ i transmission mechanism of the rotational force for forward or reverse rotation of the nip cam roll. Figure 6 is the bearing part of the nip cam roll. 7 is a cross-sectional view, and FIG. 8 is a configuration diagram of the color image recording device.
The figure is a (1η configuration diagram) of a conventional pressure developing device. ...Drive motor, 150...
Reduction device, 1. ．． 57,160...Ratchet southeast,
156...Casing, S...String spring. Do300 〆□

Claims (1)

[Claims] It has a plurality of work rolls facing each other, at least one of the work rolls is installed so as to be separable from the other work rolls, and a sheet-like material is passed between the facing work rolls to produce the sheet-like material. In a pressure applying device configured to apply pressure to a substance, a rotational driving force for rotating a work roll facing the separating work roll is used as a power source for a separating device for moving the separating work rolls toward and away from each other. However, this separation device consists of a rotating cam mechanism,
A rotational force storage device is connected to the camshaft of the rotating cam mechanism, and the rotational force of the work roll facing the separating work roll is transmitted to the rotational force storage device to accumulate the rotational force. A pressure applying device, characterized in that the camshaft of the rotary cam mechanism is rotated by releasing the rotational force by a release device.