JPS6234614Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an apparatus for applying adhesive to a core metal roll.

(Prior art) The heat fixing roll or paper feed roll of a copying machine is provided with a structure in which a core metal roll is covered with a rubber layer. In order to firmly adhere the coating rubber layer to the roll, it is necessary to apply a suitable adhesive to the roll, which is generally done by hand by an operator.

(Problem that the invention aims to solve) However, hand-coating is not only inefficient, but also tends to result in uneven coating thickness, and the adhesive contains volatile organic solvents such as toluene and ethyl acetate. There was a problem that workers were placed in a bad working environment due to the effects of

The present invention was developed as a result of careful consideration from various aspects to improve this problem.

(Means for Solving the Problems) That is, the device for applying adhesive to the core roll according to the present invention grips both end shafts of the core roll in a coating booth equipped with an air conditioning device and an exhaust device. a roll drive device that rotates the core metal roll; a coating device that brings a brush into contact with the rotating core metal roll and moves it in the axial direction of the core metal roll to apply adhesive; A conveyor device that transports the gold roll from the entrance to the exit of the application booth in a tact manner, and receives the core metal roll coated with adhesive from the roll drive device and supplies it to the conveyor device while the tact transport is stopped. At the same time, as this roll is tact-fed to the exit side of the application booth, the core roll to which the adhesive is to be applied is received from the conveyor device and is supplied to the roll drive device. It is characterized by being equipped with a roll transfer device.

(Example) To explain more specifically based on the drawings below, in FIG. 1, 1 indicates a coating booth, and this booth 1 is equipped with an air conditioner 2 and an exhaust device 3.

That is, the air conditioner 2 is installed so that air can be supplied from the air conditioner 4 to maintain the inside of the coating booth 1 at a predetermined temperature and humidity, and the exhaust device 3 is installed so that the organic solvent in the adhesive can be kept at a predetermined temperature and humidity. The coating booth 1 is equipped with an exhaust fan 5 so that the atmosphere inside the coating booth 1, which has been contaminated by oxidation, can be exhausted to the outside.

In addition, the coating booth 1 thus provided
Inside, roll driving devices 6A and 6B, coating devices 7A and 7B, a conveyor device 8, and roll transfer devices 9A and 9B are arranged.

In addition, in FIG. 2, which is a longitudinal cross-sectional view of FIG. 1,
Although one roll drive device 6A, coating device 7A, and roll transfer device 9A are shown in an enlarged scale, the other roll drive device 6B, coating device 7B, and roll transfer device 9B are similarly provided.

In the same figure, the roll drive device 6A is trying to grip and rotate the shaft portions at both ends of the core metal roll 10a, on which adhesive is to be applied for the first time, with gripping devices 11 and 12. teeth,
They are fixed to the upper ends of conveyor brackets 13a and 13b, respectively.

Specifically, in FIG. 3, the gripping device 12 is attached to a shaft support 14 fixed to a conveyor bracket 13b.
A cylinder 16 is rotatably mounted on the shaft support 14 via a bearing 15, and a gripper 17 is fixed to one end of the cylinder 16.
A piston 19 is inserted into the cylinder 16 and is biased by a compression spring 18 so that one end thereof protrudes from the tip of the gripping tool 17, and a blind flange is fixed to close the cylinder 16. It consists of 20.

As shown in the figure, the tip of the gripping tool 17 is provided with a tapered hole for chucking, and the tip of the piston 19, which has been moved to the maximum extent toward the gripping tool 11, protrudes slightly from the tip of the gripping tool 17. has been done.

On the other hand, the gripping device 11 is attached to the conveyor bracket 1
3a, a cylinder 23 rotatably mounted on the shaft support 21 via a bearing 22, a gear 24 fixed on the outer periphery of the cylinder 23, and a The piston 25 and the compression spring 76 are inserted into the piston 25 and the compression spring 76, the gripper 26 is fixed to one end of the piston 25, the flange 27 is fixed to close the cylinder 23, and pressurized air is supplied into the cylinder 23. It is comprised of a pipe line 28 that is connected to the supply port of the flange 27 so as to be able to absorb water, and a compressed air supply device that supplies pressurized air to the pipe line 28 via a rotary joint 29.

The piston 25 and the cylinder 23 are engaged with each other via a parallel key 30 fixed to the piston 25, so that they can rotate together and the piston 25 can rotate independently in the axial direction. Can be moved. In addition, the gripping tool 26
Similar to the gripping tool 17, a tapered hole for chucking is provided at the tip of the gripping tool 17.

As described above, since the roll drive device 6A is configured with the pair of gripping devices 11 and 12 coaxially facing each other, the core metal roll is moved to the illustrated position by the roll transfer device 9A, which will be described later. 10
When a is delivered, it can be received and rotated in a predetermined manner. At this time, the cylinder 23 is supplied from the compressed air supply source (not shown) of the gripping device 11 via the rotary joint 29 and the pipe line 28. When pressurized air is supplied therein, the piston 25 is projected toward the gripping device 12, so that a gripping tool 26 is attached to one axial end of the core roll 10a supported by the roll transfer device 9A. contact and slightly move the core metal roll 10a toward the gripping device 12. Then, the core metal roll 10a
The other shaft end of the gripper contacts the gripping tool 17 of the gripping device 12, so that the core roll 10a touches the gripping tools 17, 26.
It is held as shown in the figure.

In addition, in the gripped state, each shaft end of the core metal roll 10a is slightly inserted into the chucking taper hole provided at the tip of the gripping tools 17, 26, and A piston 19 is urged by a compression spring 18 and pressed against one shaft end.

Next, the core metal roll 10a gripped in this manner is driven to rotate, and this rotational drive is performed by a gear of a drive source (not shown) that is meshed with the gear 24.

When the gear 24 is driven, the cylinder 23 and the piston 25 rotate together, and the core roll 10a is rotated together with both the grippers 17 and 26. Of course, the cylinder 16 is also rotated together with the gripper 17.

Since the core metal roll 10a does not vibrate excessively during rotational driving, the adhesive can be applied evenly by brushing as described later, and the roll transfer device 9A can be used after applying the adhesive.
It is also easy to transfer rolls to and from.

That is, when the adhesive is applied to a predetermined value and the rotational drive of the core metal roll 10a is stopped, the supply of pressurized air into the cylinder 23 is stopped and the piston 25 is depressed by the action of the compression spring 76, and
The core roll 10a is pushed by the piston 19 of the gripping device 12, moves a little toward the gripping device 11, and tries to fall, but the roll transfer device has previously carried it to the roll receiving position. 9A
be accepted by In this way, according to the roll drive device 6A, rolls can be received and delivered extremely easily.

Next, referring to the coating device 7A, this coating device 7A has shaft support brackets 30 and 31 fixed to the coating booth 1 in FIG. 2 and FIG. , a screw shaft 34 rotatably supported via shaft supports 32 and 33 fixed to these brackets 30 and 31, and a driving shaft connected to one end of this screw shaft 34 to form a shaft support bracket 30. a motor 35 fixed to the shaft support brackets 30 and 31; a movable bracket 37 fitted to the guide shaft 36 and screwed to the threaded shaft 34; an air cylinder 38 fixed to the cylinder 38; a connecting shaft 40 having one end connected to the piston rod of the cylinder 38 and the other end fixed to the brush holder 39; a brush 41 fixed to the brush holder 39; The brush 41 is configured with an adhesive supply device 42 (see FIG. 1) that supplies adhesive to the brush 41.

The adhesive supply device 42 is provided so that adhesive can be supplied from the tank 43a shown in FIG. 1 through the supply port 44 of the brush holder 39 shown in FIG. There is.

That is, in a state where the nozzle screwed onto the supply port 44 and the pipe line 45 connected to the pump 44 are connected via the flexible tube 46, and the valve 47 shown in FIG. 2 is opened. Nitrogen gas 4 is pumped from the tank 43a and introduced into the tank 43a at this time.
Pumped together with 8.

By allowing nitrogen gas 48 to coexist in this way, it is possible to prevent the adhesive from deteriorating due to the influence of moisture. This not only eliminates the need to install a pump, but also reduces the amount of nitrogen gas used.

The adhesive used is one suitable for fixing the liquid silicone rubber to the core metal roll 10a, which is dissolved in a predetermined amount with a volatile organic solvent such as toluene or ethyl acetate.

The brush 41 is made of synthetic resin foam, animal hair,
It is made of one or more materials selected from synthetic fibers, etc., and is provided so that adhesive can be supplied through the supply port 44 of the brush holder 39.

Therefore, according to this coating device 7A, the adhesive can be applied satisfactorily by bringing the brush 41 into contact with the core metal roll 10a which is gripped and rotationally driven by the roll drive device 6A.

The brush 41 is moved above the core roll 10a before the application starts, but when a predetermined control signal is sent to the air cylinder 38 and its piston rod is pushed downward, the brush holder 39
are the guide walls 48a and 48b of the movable bracket 37.
The brush 41 descends while being guided by the core metal roll 10a.
is abutted in a predetermined manner. At the same time, the motor 35 is activated, the screw shaft 34 rotates, and the movable bracket 37 is guided by the guide shaft 36 and moved in a predetermined direction. Therefore, the brush 41 is also moved in the same direction, and the adhesive can be applied over the entire length of the roll portion of the core metal roll 10a.

In this case, the motor 35 is driven to rotate in reverse when the side end of the brush 41 is moved to the end of the roll section. The number of times the brush 41 is reciprocated in the axial direction of the core roll 10a, the rotational speed of the core roll 10a, the moving speed of the brush 41, etc. are appropriately selected depending on conditions such as the type of adhesive used. When the coating is finished, the air cylinder 38
The piston rod of the brush 41 is depressed.
is moved to its original position on the core metal roll 10a, and the driving of the motor 35 is stopped.

Next, referring to the roll transfer device 9A, the roll transfer device 9A in FIG.
Air cylinder 50 fixed to coating booth 1
and a pair of guide bearings 51a, 51b, guide bars 52a, 52b supported by the guide bearings 51a, 51b so as to be able to move up and down, and an arm fixed to the guide bars 52a, 52b and the piston rod of the air cylinder 50. 53, and a pair of roll supports 54 fixed to this arm 53.
a, 54b.

Note that a V-shaped recess is provided at the upper end of the roll supports 54a, 54b to support the shaft of the core metal roll. Therefore, as shown in FIG. 2, when the core metal roll 10a is conveyed by the conveyor device 8, which will be described later, to the location where the roll transfer device 9A is disposed, the air cylinder 50 is activated. By projecting the piston rod upward, the arm 53 and the roll supports 54a, 54b are moved upward to support the core metal roll 10a in the V-shaped recess.

The piston rod of the air cylinder 50 is initially sunk downward, and the arm 53 and roll supports 54a, 54b are connected to the core metal roll 10 conveyed by the roll transfer device 9A.
a, but as mentioned above, it is raised by the operation of the air cylinder 50, and in the rising process, the roll supports 54a, 54b
supports the core metal roll 10a and raises it to a position where it is delivered to the roll drive device 6A.

In addition, the core metal roll 1 lifted in this way
0a is received by the roll drive device 6A, the piston rod of the air cylinder 50 is immediately returned to its original lower position, and along with this, the arm 53 and roll supports 54a, 54b are also returned to their original lower position. returned to position.

Further, when the coating on the core metal roll 10a is completed, the core metal roll 10a rises again to receive it, and in the process of descending, the core metal roll 10a which has been primarily coated is delivered to the conveyor device 8. Then, the conveyor device 8, which had been stopped, is driven again, and the roll 10a is tact-fed toward the roll transfer device 9B. Note that after one tact feeding, the core metal roll 10a to be coated next is conveyed to the roll transfer device 9A.

Thereafter, the next core metal roll 10a is produced through the same process.
can also be applied automatically.

The supports 54a, 54b are guided by guides fixed to the brackets 13a, 13b when moving up and down. In FIG. 1, the primary coating is performed in this way and the roll transfer device 9B
The core metal roll that is tact-fed toward
is shown.

Next, the conveyor apparatus 8 is shown with one conveyor bracket 13a enlarged in FIG. 5, but the other conveyor bracket 13b is provided in substantially the same manner.

That is, in FIGS. 2, 3, and 5, this device 8 includes endless chains 62a, 62b mounted across sprockets fixed to a drive shaft 60 and a driven shaft 61, and endless chains 62a, 62b. 62b, chain guide rails 64a, 65a fixed to the conveyor bracket 13a, chain guide rails 64a, 65a fixed to the bracket 13b, and roll feeding attachments 63a fixed to the conveyor bracket 13b. Detected object 66, proximity switch 67 fixed to conveyor bracket 13a, and roll support rail 6
8a, and a roll support rail 68b fixed to the bracket 13b.

Note that the attachments 63a and 63b are
A large number of endless chains 62a, 62b are fixed at regular intervals over the entire length, and a group of detection objects 66 is fixed only to one group of roll feeding attachments 63a.

Therefore, according to this conveyor device 8, the drive shaft 60 is intermittently operated via a drive device (not shown).
is rotated in one direction, and the chain 6
By running the rollers 2a and 62b, the core metal roll can be fed in a predetermined tact from the entrance side to the exit side of the coating booth 1.

To be more specific, the core metal roll 10a transported from the previous process is transferred onto the roll support rails 68a, 68b by the roll feeding device 69 installed at the entrance of the coating booth 1, and then
Near the entrance of coating booth 1, both rails 6
It rolls on the downward slope of 8a and 68b, and stops when it reaches the upward slope connected to the slope.

Next, when the endless chains 62a and 62b are driven, both rails 68a and 68b are driven.
Attachment 63a for roll feeding from below,
63b is moved above both rails and from the entrance side to the exit side of the coating booth 1,
Therefore, the core metal roll 10a is pushed by the roll feeding attachments 63a, 63b and transferred to the exit side of the coating booth 1.

In this case, the roll feeding attachments 63a, 63b are brought into contact with the shaft end of the core roll 10a as shown in FIG. They are guided by guide portions 70a, 70b provided on the rails 68a, 68b.

In this way, when the core metal roll 10a is transported to the roll transfer device 9A, the proximity switch 67 moves the roll feeding attachment 6
The detected object 66 fixed to the chain 3a is detected, and based on this, the driving of the endless chains 62a and 62b is stopped.

Next, as described above, the roll transfer device 9A
The core metal roll 10a is delivered to the roll drive device 6A, the coating device 7A applies a predetermined coating to the passed core metal roll 10a, and the core metal roll 10a that has been coated is transferred to the roll transfer device. 9
When the detected object 6 is moved onto the rails 68a and 68b by A, the endless chains 62a and 62b are driven again, and the detected object 6 that is subsequently moved is moved onto the rails 68a and 68b.
6 is detected by the proximity switch 67, the drive is stopped again.

In this way, primary coating can be performed continuously while the core metal roll 10a, which is supplied from the entrance of the coating booth 1 by the roll feeding device 69, is fed in a tact. In addition, in this example,
The coating is provided so that a second coating can be applied subsequent to this first coating.

That is, when the core metal roll 10b to which the primary coating has been applied is tact-fed a predetermined number of times by the endless chains 62a, 62b, this roll 10b is conveyed to the roll transfer device 9B, and hereafter, in the case of the primary coating described above, Similarly, secondary coating can be performed using the roll transfer device 9B, the roll drive device 6B, and the coating device 7B.

The core metal roll 10c that has been subjected to the second coating is pushed by the attachments 63a and 63b fixed to the endless chains 62a and 62b, and is transferred toward the exit side of the coating booth 1, and is attached to this exit section. The roll is transferred to the outside of the coating booth 1 by a roll take-out device 71.

This roll take-out device 71 is similar to the endless chains 62a and 62b.
2 is driven intermittently, and an attachment fixed to this chain 72 is provided so that the core metal roll 10c can be pushed and transferred, and a movable stopper 75 controls roll feeding to the subsequent process.

Note that the intermediate portions of the rails 68a and 68b are provided so as to be inclined upward toward the exit of the coating booth 1, but the end portions connected thereto are inclined downward from the vicinity of the exit of the coating booth 1. Therefore, the core roll 10c pushed and transferred by the attachments 63a and 63b can roll forward on this downward slope and reach the take-out device 71. .

In addition, the adhesive is supplied to the secondary coating device 7B described above from the tank 43b as in the case of the primary coating device 7A, and the roll feeding device 69 is supplied with the air cylinder 73. Feed is performed by swinging the roll receiver 74.

As described above, according to the present apparatus, it is possible to feed the core metal roll from the entrance of the application booth, automatically apply adhesive, and automatically take it out of the booth. In addition to being able to apply adhesive multiple times, there is no need for workers to enter the application booth during application, so there is no need to worry about the adverse effects on the human body due to volatile organic solvents in the adhesive. Therefore, it is advantageous in terms of hygiene.

During coating, it is preferable to use an air conditioner to maintain the atmosphere inside the coating booth at around 25°C ± 5°C, and to use an exhaust system to prevent the gas concentration in the atmosphere where the organic solvent is vaporized from reaching the explosive limit. It is preferable that the conveyor device, coating device, etc. be provided so that the conveyor device, coating device, etc. are not driven until a certain period of time has elapsed after appropriate exhaustion and operation of the exhaust device.

In addition, in the above-mentioned embodiments, the mode in which the adhesive is applied secondarily is shown, but the adhesive is not limited to this, and it may be applied in a tertiary or more than this manner. In the case where the coating device is provided so as to apply the coating to another layer, a pair of a coating device, a roll drive device, and a roll transfer device may be additionally provided.

(Effects of the invention) As detailed above, according to the invention, it is possible to obtain a device that can automatically apply adhesive to a core metal roll, and therefore, it is possible to obtain a device that can automatically apply adhesive to a core metal roll. It is possible to prevent adverse effects on the human body, and it is also possible to apply it uniformly, thereby improving quality.

[Brief explanation of the drawing]

1 to 5 show embodiments of the present invention.
The figure is a front view showing a schematic configuration of an apparatus for applying adhesive to a core metal roll, FIG. 2 is a longitudinal sectional view of FIG. 1, and FIG. 3 is an enlarged longitudinal sectional view of the roll drive device.
4 is a view taken along the X arrow in FIG. 2, and FIG. 5 is a partially enlarged front view of the conveyor device. 1...Coating booth, 2...Air conditioner, 3...Exhaust device, 6A and 6B...Roll drive device, 7A and 7B...Coating device, 8...Conveyor device, 9A and 9B...Roll transfer device , 10a-10c...
...core metal roll, 41...brush.

Claims (1)

[Scope of utility model registration request] In a coating booth equipped with an air conditioning device and an exhaust device, there is provided a roll drive device that grips both end shaft portions of a core metal roll and rotates the same, and a brush that is brought into contact with the rotating core metal roll. a coating device that moves the core metal roll in the axial direction of the core metal roll to apply the adhesive; a conveyor device that tact-feeds the core metal roll from the entrance to the exit of the coating booth;
Receive the core metal roll coated with adhesive from the roll drive device and supply it to the conveyor device, which is stopping tact feeding, and as this roll is tact fed to the exit side of the application booth. A core metal roll characterized in that it is provided with a roll transfer device that receives the conveyed core metal roll to which adhesive is to be applied from the conveyor device and supplies it to the roll drive device. A device that applies adhesive.