JP2000313419A - Method and apparatus for automatically attaching/ removing bag of columnar work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automate attachment/removal of a columnar work to improve productivity by pushing out the work while a form of an opening expanded by a mouth expanding machine is kept and by holding a tip with a work chuck for drawing out of a bag. SOLUTION: While a work is supported by bag chucks 5, 6, the chucks 5, 6 are raised in parallel to a position where a tip of an opening of a bag is hooked on a pin. An aperture of a mouth expanding machine 4 is opened, and while a form of the opening expanded by the expanding machine 4 is kept, pressure-welding force of the front bag chuck 5 is loosened. Further, as soon as the rear bag chuck 6 is raised by a predetermined distance, the work W is pushed out, and a tip of the pushed work W is held by a work chuck 2. Finally when the bag chucks 5, 6 are released, a bag B hangs down by its own weight and returns to an original cylindrical form. Since a space thus occurs between the work W and the bag B, the work W can be easily removed out of the bag B by raising the work chuck 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process for performing a desired process on a columnar work housed in a packaging bag longer than the columnar work. The present invention relates to a technique for automatically returning to an original bag and sealing after completion of processing.

[0002]

2. Description of the Related Art Conventionally, for example, in manufacturing an optical fiber, as a first step, a columnar optical fiber preform (preform) is manufactured. Until it is finally drawn into an optical fiber, processing and stocking such as various processes and inspections are performed, and during that time, to prevent scratches and dirt,
It was often stored in packaging bags, but the work of attaching and detaching the bags was mostly dependent on humans, so it took a long time to work, handling heavy objects was dangerous, and the work efficiency was reduced. There were problems such as an increase in cost.

Hitherto, in order to automatically perform bag removal and attachment, bag removal and bag attachment are performed separately and independently, and there has been an automatic device for each work unit such as opening and sealing. There is no equipment that automatically automates bagging and bagging. As described above, when the bag removal and the bag attachment are performed separately, the removed bag is usually discarded as a waste product, and a new bag is used when covering the bag. However, such a method has drawbacks such as the cost of bags, the generation of large amounts of waste, and the cost of equipment for dealing with various types of workpieces due to differences in dimensions.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and has been made in consideration of the above-mentioned problems. A main object of the present invention is to provide a method and an apparatus for automatically attaching and detaching bags of columnar work, which can reduce the amount of waste by reusing bags, improve productivity and reduce costs.

[0005]

According to a first aspect of the present invention, there is provided a method for automatically removing a bag of a package which wraps both ends of a columnar work. After gripping the conveyed package with the bag chuck, one end of the bag is opened with an automatic opening machine, and the columnar work and the bag are slid relative to each other, and the tip of the work is pushed out from the opening portion of the bag to open the opening. After forming and holding the shape of the opening, the tip of the work is pulled back, the opening is expanded by a mouth-opening machine, and while the shape of the opening expanded by the mouth-opening machine is maintained, This is an automatic bag removing method for a columnar work, wherein the work is extruded, the tip of the extruded work is gripped by a work chuck, and then the work is extracted from the bag.

According to the automated bag removing method,
If there is a little extra space between the bag and the columnar work, it is possible to remove the bag very easily and in a short time, and to prevent the work that is stored in the bag and goes through the manufacturing process and the auxiliary process to prevent scratches and dirt. Processing such as processing and inspection can be continuously and automatically performed, stabilizing operation, improving yield and productivity, and reducing costs.

According to a second aspect of the present invention, there is provided a method for automatically putting on a bag wrapping up to both ends of a columnar work, wherein an opening device is inserted into one end of the bag for putting the work. Is formed, and after inserting the columnar work held by the work chuck into the bag from a position where the axis of the work is aligned with the axis of the opening, the work is held by the bag chuck, and then the work and the bag are relatively moved. Move and insert until the end of the work reaches the bottom of the bag, hold the bag and the work with the bag chuck, release the work chuck and the mouth opening machine, and seal the opening of the bag with the automatic sealing machine An automatic bagging method for a bag of a columnar work.

[0008] According to the automated bag wearing method,
If there is a little extra space between the bag and the columnar work, it will be possible to automatically and automatically bag the work in a short time in a short time in a work that has completed processing such as manufacturing and auxiliary processes and processing such as inspection. It is possible to prevent scratches and dirt, stabilize operation, improve yield and productivity,
Cost can be reduced.

Further, according to a third aspect of the present invention, there is provided a method for automatically removing a bag of a packaging body wrapping up to both ends of a columnar work, wherein the bag is removed by the method described in the first aspect. The bag after the work is subjected to a desired treatment is a method for automatically attaching and detaching a bag of a columnar work, which is performed by the method described in claim 2.

[0010] If the process adopting the automated bag desorption method is incorporated into the manufacturing process and the auxiliary process, the de-bagged columnar work is subjected to processing such as processing and inspection in another process. Returning to the main process, it can be put back in the original bag and sealed, so that the bag can be reused and the number of discarded bags can be reduced. Since the operations can be continuously and automatically performed, safety can be ensured and operation can be stabilized, yield and productivity can be improved, and cost can be improved.

In this case, as described in claim 4, the relative movement of the work and the bag is controlled by a friction between the work and the bag by a bag chuck which can be pressed against and detached from the side of the work and the bag. It can be grasped and performed so as to generate. In this way, the bag can be moved in a bellows shape,
Because it can be stretched back to its original cylindrical shape, it can correct the crushed or broken part of the bag, and can easily make a funnel-shaped opening,
The bag can be easily and reliably attached and detached irrespective of the length of the work, and even if the bag comes into contact with or sticks to the work at various places.

Next, the invention described in claim 5 of the present invention is:
In a device for automatically unbagging and wrapping a bag wrapping up to both ends of a columnar work, at least one end of the columnar work in the axial direction is gripped, and a work chuck capable of moving the work in the axial direction, Guide means for moving along the axial direction of the gripped work, including a plurality of bag chucks which can be pressed and released via a bag on the side surface of the work, and further, a guide means for aligning the axis of the columnar work with the axis of the bag. And a bundle of many pins, and an opening / closing machine capable of expanding and reducing the position of these pins on the radiation, and an automatic opening and closing machine for automatic opening and closing of a columnar work bag. Device.

With the use of the automatic columnar work bag attaching / detaching apparatus constructed as described above, the operation of removing the bag from the columnar work packed in the bag and the operation of putting the work in the bag and sealing it can be performed continuously. Since this system is automated, if this device is incorporated into the manufacturing process and auxiliary processes, almost all processes can be continuous and automated, ensuring safety, stabilizing operation, and improving yield and productivity. It is an apparatus for automatically attaching and detaching a bag of columnar work that can be improved and cost can be improved.

In this case, as described in claim 6, the bag chuck is provided with a control means for controlling the pressing force so as to cause relative movement between the work and the bag so as to generate a friction between the work and the bag. It can be provided. By using such a bag chuck, the bag can be pulled up in a bellows shape or stretched back to the original cylindrical shape, so that the crushed or broken portion of the bag can be corrected,
Since a funnel-shaped opening can be formed, it is easy to remove the bag, and the bag can be easily attached and detached regardless of the length of the work. Moreover, it can be performed reliably.

In this case, the bag chuck includes an elastic contact member, a shock absorber, and a mechanism for moving the contact member in a direction perpendicular to the axis of the work and in an axial direction. can do. With this configuration of the bag chuck, the elastic contact body and the bag are almost integrated, and the elastic contact body and the bag are almost integrated into a work piece due to shear friction. The apparatus for automatically attaching and detaching a bag of a columnar work provided with a bag chuck capable of controlling a desired pressure until a side surface can be slid, and further, a state in which the bag and the work become free.

Further, as set forth in claim 8, the mouth opener may be one in which a number of pins are erected on a number of aperture plates of an iris aperture. Like this,
If a large number of pins are planted on the multiple aperture plates of the iris aperture, the aperture of the aperture can be adjusted to the aperture of the bag as the aperture plate is continuously operated. The aperture can be limited and its shape can be maintained. Therefore, the bag is almost completely free from entanglement or clinging to the work when the bag is detached and attached, and an automatic detaching device for a columnar work bag equipped with a mouth opening machine capable of being easily detached is provided.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto. Here, FIG. 1A is a schematic configuration diagram of an apparatus for automatically attaching and detaching a bag of a columnar work according to the present invention.
(B) is a schematic plan view of the bag chuck.

An example of the configuration of the automatic columnar workpiece bag attaching / detaching apparatus 1 according to the present invention will be described with reference to FIG. This device 1
Is an apparatus for automatically unbagging and bagging the bag B wrapping up to both ends of the columnar work W, gripping at least one end of the columnar work W in the axial direction, and holding the work W in the axial direction. A movable workpiece chuck 2 and a movable workpiece chuck W along the axial direction of the gripped workpiece W;
A front bag chuck 5 which can be pressed and released via a bag B on the side surface of the bag and a rear bag chuck 6 which is separated at a predetermined interval.
And an opening machine 4 having a bundle of many pins and capable of enlarging and reducing the positions of these pins on the radiation, an automatic opening machine 10 and an automatic sealing machine 11.

The front bag chuck 5 or the rear bag chuck 6 includes a resilient contact member 7, a shock absorber 8, and a moving mechanism 9 for moving the resilient contact member in the direction perpendicular to the axis of the workpiece and in the axial direction.
And is supported by the chuck support shaft 12. The elastic contact body 7 is generally a rubber-like elastic body, but the friction coefficient between the bag B and the work W is larger than the friction coefficient between the elastic contact body 7 and the bag B. When B is integrated and does not slide on the side surface of the work, or when the weight of the work W is heavy and easily slips off, as shown in FIG. It is good to use a tool with a nail in the shape of a hook and slide it over the surface of the work by hooking it on a bag. As a further effect, the number of catch points can be increased by making the nail plate double as shown in FIG. Further, the material of the nail plate is preferably softer than the work when the work is hard like glass, and aluminum, acrylic resin or the like is used. With this configuration of the bag chucks 5, 6, the elastic contact body 7 and the bag B are changed from a strong state in which the pressing force of the elastic contact body 7 and the bag B to the work W can be supported so that the work W does not move. Can be controlled to a desired pressing force until a state in which the side surface of the work can be slid by shear friction, and further, a state in which the bag B and the work W become free. In the shock absorber 8,
Steel springs, hydraulic dampers, pneumatic dampers and the like are used.

If the number of bag chucks is at least two, the operation of attaching and detaching bags can be reliably performed by sequence control, but depending on the length and weight of the columnar work,
There are cases where three or more units are installed. Further, of the plurality of units, one having a bag chuck function may be provided as one unit, and the remaining unit may have the same function as the work chuck 2.
Further, the combination of the elastic contact body 7, the shock absorber 8 and the moving mechanism 9 in the bag chuck is preferably at least three or more.
With a set, the work can be easily centered and a heavy work can be reliably supported.

For example, assuming that a large number of pins are planted on a large number of aperture plates of an iris aperture used for a camera aperture, as the aperture plate is continuously operated, the mouth opening device 4 has a large aperture. Since the caliber can be adjusted to the caliber of the bag, the bag can be maximally opened by a large number of pins, and the form can be maintained. Therefore, when the bag is attached or detached, the bag hardly entangles or clings to the work, and can be easily attached or detached.

The guide means 3 connects the axis of the columnar work W to the bag B
It has an adjusting function to match the axes of the bag chucks 5 and 6, and is composed of, for example, at least two or more rubber rollers. Further, a driving mechanism for moving the package P or the work W in the axial direction may be added.

The automatic opening machine 10 and the automatic sealing machine 11
Conventionally known and commercially available automatic opening machines include knife-running type, scissor type, tearing type and the like. Also,
The automatic sealing machine includes a heat seal type, a string type knot type, a tape type seal type, and the like, which is selected in consideration of the material, form, dimensions, number of reuses, and the like of the bag.

Next, an example of the bag removing method of the present invention using the columnar workpiece bag removing apparatus 1 will be described. First, unbagging is performed in (a), (b), (c),
It is performed in the order of the steps (d) and (e). After supporting the package P wrapping up to both ends of the columnar workpiece W conveyed to the bag attaching / detaching device 1 with the bag chucks 5 and 6, one end of the bag is opened by an automatic opening machine (not shown). Next, if the pressing force of the front bag chuck 5 is relaxed and the rear bag chuck 6 is moved upward by a predetermined distance, the work W moves upward but the bag B is moved to the front bag chuck 5. Since the work and the bag cannot be moved because they are held down, the work and the bag are relatively slid, the tip of the work W is pushed out from the opened portion of the bag, and the opened portion of the crushed or broken bag is corrected and the circumferential length of the bag is corrected. (See FIG. 2A).

Next, while maintaining the shape of the opening,
After the work W and the rear bag chuck 6 are moved to their original positions and the tip of the work W is pulled back into the bag, the bundle of pins of the opening device 4 is set at the center of the opening (see FIG. 2B). ). Then, while the work is supported by the bag chucks 5 and 6,
After the tip of the opening of the bag is raised in parallel to a position where the tip of the opening is hooked on the pin (see FIG. 2 (c)), the aperture of the mouth-opening machine 4 is opened, and the opening is widened with the pin. 4. While maintaining the shape of the opening expanded by the step 4, the pressing force of the front bag chuck 5 is loosened, the rear bag chuck 6 is raised by a predetermined distance, and at the same time, the work W is pushed out, and the tip of the pushed work W is released. Is gripped by the work chuck 2 (see FIG. 2D).

Finally, when the bag chucks 5 and 6 are released, the bag B hangs down by its own weight and returns to the original cylindrical shape. In this manner, a space is created between the work W and the bag B, so that the work W can be easily extracted from the bag B by raising the work chuck 2 (see FIG. 2E). Here, when the empty bag B is reused, the work W is processed or inspected in another process while maintaining the state in which the opening is expanded by the pin of the mouth expander 4. Wait until you come back. Alternatively, when replacing the bag with a new bag B, the bag is removed by a handling machine (not shown).

Next, the bag is attached as shown in FIGS.
The processes are performed in the order of (c), (d), and (e). The bag B after extracting the work W at the end of the bag removal is directly mounted on the opening device 4 of the bag attaching / detaching device 1 and is in a waiting state, or a new bag B for storing the work W is not shown. Is transported to below the opening device 4 by the handling machine described above, and the opening device 4 is inserted to form an opening, and hangs down by its own weight to form a cylindrical portion (see FIG. 3A). Stop at the position where the work W gripped by the work chuck 2 is inserted into the bag B by about 80% from the position where the axis of the work W is aligned with the axis of the opening portion of the bag B for inserting the work W by the guide means 3. After doing
The work W is supported from above the bag B by the bag chucks 5 and 6 (see FIG. 3B).

Subsequently, the pressing force of the rear bag chuck 6 is released, and the bag B is moved up until the bottom of the bag B reaches the tip of the work W (see FIG. 3C). Next, after supporting the work W with the rear bag chuck 6, the work chuck 2 is released, and the rear bag chuck 6 is lowered until the bellows-shaped bag between the bag chucks 5 and 6 is fully extended (FIG. 3D). )reference). Next, the aperture of the mouth expander 4 is closed, the pin is moved toward the center to release the opening of the bag, and the bag chucks 5 and 6 are lowered in parallel to the original position (see FIG. 3E). Finally, the tip of the bag is sealed with an automatic sealing machine (not shown) to complete the bag attachment.

The columnar work that can be handled in the present invention is not limited to a circular column, a polygonal column, or any other cross-sectional shape. Materials are metal, glass, ceramics,
Plastics, woods and the like can be mentioned. The material of the bag is preferably a plastic film, paper, woven fabric, non-woven fabric, or the like. The diameter of the cylindrical portion of the bag preferably has an allowance of about 5 to 10% greater than the diameter of the cylindrical work or the cross-sectional diagonal line of the polygonal work.

[0030]

Next, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples. (Embodiment) Using a columnar work bag attaching / detaching apparatus 1 shown in FIG. 1, a diameter of 30 to 100 mm and a length of 600 to 2000 are used.
When automatically measuring and inspecting the characteristics of synthetic quartz preforms of mm in the middle of the manufacturing process, one end of the polyethylene bag of the delivered package is automatically opened, unbagged, and the removed preform is removed. After the characteristic measurement and inspection, the sample was automatically stored in the original bag and sealed. When this operation was continuously performed for 100 lots in which preforms having the above-mentioned size range were mixed, the operation was normal without any particular abnormality or accident. Also, no scratches or stains were made on the preforms handled. Reuse of the polyethylene bag was implemented without any problems. However, when the opening is sealed by heat sealing, a part of the bag is lost at the time of opening, so that the number of reuses is only about several times.

The present invention is not limited to the above embodiment. The above embodiment is an exemplification, and has substantially the same configuration as the technical idea described in the scope of the claims of the present invention. It is included in the technical scope of the invention.

For example, in the above embodiment, the description has been made assuming that the package and the columnar work are arranged in a vertical state, but the present invention is in principle irrespective of the arrangement direction of the package and the columnar work. For example, the present invention can be applied even when the work is placed at a horizontal position.

When the columnar work and the bag are slid relatively to each other, the work is mainly held by the rear bag chuck and is slid by the front bag chuck.

[0034]

As described in detail above, according to the present invention,
Regarding the automatic attachment and detachment of the bag of the columnar work, the bag removal and the bag attachment can be performed independently, or the bag removal and the bag attachment can be successively performed in this order. Especially when continuous,
If the unbagged bag is left in the device, the work that has been processed and inspected in another process can be accepted again and bagged, so that the bag can be reused and the unbagged bag can be discarded. lost. Therefore, there was almost no need to refill new bags.

In addition, if the automatic bag attaching / detaching process is incorporated into the existing manufacturing process and auxiliary process, processing such as processing and inspection is continuously performed on the work housed in the bag and distributed through each process in order to prevent scratches and dirt. Can be done automatically. Furthermore, since it supports many types of columnar workpieces and many types of bags, there is no need to prepare a large number of single-purpose machines by type as in the past, and the equipment can be miniaturized. Savings can be achieved. In addition, the desorption time is shortened, and human operation is hardly performed except for operation monitoring and maintenance, and high safety and stability of operation can be maintained. Therefore, the rationalization effect on all the manufacturing and auxiliary processes is extremely large, and it is possible to improve the product yield and the productivity and to improve the cost.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a configuration example of an automatic attachment / detachment device for a bag of a columnar work according to the present invention. (A) A schematic vertical cross-sectional view of the automatic desorption device, (b) a schematic plan view of a bag chuck.

FIG. 2 is a process chart in the case of bag removal using the columnar workpiece automatic desorption device of the present invention. (A) a step of opening one end of the bag, sliding the columnar work and the bag relative to each other, and extruding the tip of the work from the opening of the bag to form the opening; (b) forming the opening of the bag; After the tip of the work is pulled back while being held, a step of setting the mouth expander to the operation start position, (c) a step of operating the mouth expander to radially spread the pins to expand the opening, (D) a step of extruding the work while holding the shape of the opening of the bag and holding the work with a work chuck; and (e) a step of releasing the bag chuck and extracting the work from the bag with the work chuck.

FIG. 3 is a process diagram in a case where a bag is put on using the automatic columnar workpiece desorption apparatus of the present invention. (A) a step of aligning the axis of the columnar work gripped by the work chuck with the axis of the bag by a guide means after opening one end of the bag with the opening device; (b) lowering the work chuck and bringing the tip of the work to the bottom of the bag. A step of gripping the work with the bag chuck before landing, (c) a step of pulling up the rear bag chuck until the bottom of the bag comes into contact with the tip of the work, and (d) supporting the work with the rear bag chuck. Releasing and returning the rear bag chuck to the original position; (e) returning the pin of the mouth-opening device to the original position to release the opening, and paralleling the front bag chuck and the rear bag chuck to the original position. Step of returning to

FIG. 4 is an explanatory view showing an elastic contact body of the bag chuck. (A) A perspective view of an elastic contact body, (b) A perspective view of another example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Automatic removal apparatus of bag of columnar work, 2 ... Work chuck, 3 ... Guide means, 4 ... Opener, 5 ... Front bag chuck, 6 ... Rear bag chuck, 7 ... Elastic contact body, 8
... buffer, 9 ... elastic contact body moving mechanism, 10 ... automatic opening machine, 11 ... automatic sealing machine, 12 ... chuck support shaft, W ...
Work, B: bag, P: package.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Keitaro Fukui 2-13-1, Isobe, Annaka-shi, Gunma Shin-Etsu Chemical Industry Co., Ltd. 13-1 Shin-Etsu Kagaku Kogyo Co., Ltd. Gunma Office F-term (reference) 3E058 AA04 BA05 CA01 CB03 CB10 EA05

Claims (8)

[Claims] In a method of automatically unpacking a bag of a package wrapping up to both ends of a columnar work, after gripping a conveyed package by a bag chuck, one end of the bag is opened by an automatic opening machine. The bag was opened, the columnar work and the bag were slid relative to each other, and the tip of the work was extruded from the opening of the bag to form an opening, and the tip of the work was pulled back into the bag while maintaining the shape of the opening. Thereafter, the opening is expanded by a mouth expander, the work is extruded while maintaining the shape of the opening expanded by the mouth expander, and the tip of the extruded work is gripped by a work chuck. Automatically removing the bag of the columnar work from the bag. 2. A method for automatically bagging a bag wrapping up to both ends of a columnar work, wherein an opening is formed by inserting a mouth-opening machine into one end of the bag in which the work is to be put, and a work is mounted on a shaft of the opening. After inserting the columnar work gripped by the work chuck into the bag from the position where the axes are aligned, grip the bag with the bag chuck, then move the work and the bag relatively so that the tip of the work reaches the bottom of the bag After the bag and the work are held by the bag chuck, the work chuck and the mouth opening machine are released, and the opening of the bag is sealed with an automatic sealing machine. Bag way. 3. A method of automatically removing a bag of a packaging body wrapping up to both ends of a columnar work, wherein the bag is removed according to the method described in claim 1, and after performing a desired treatment on the work. A method for automatically attaching and detaching a bag of a columnar work, wherein the bag is attached by the method according to claim 2. 4. The method according to claim 1, wherein the relative movement of the work and the bag is performed by grasping such that a friction between the work and the bag is generated by a bag chuck which can be pressed against and detached from the side surface of the work and the bag. The method for automatically attaching and detaching a bag of a columnar work according to any one of claims 1 to 3. 5. An apparatus for automatically removing and bagging a bag wrapping up to both ends of a columnar work, wherein at least one end of the columnar work in the axial direction is gripped, and the work is movable in the axial direction. And a plurality of bag chucks which are movable along the axial direction of the work and which can be pressed and released via a bag on the side surface of the work, and furthermore, align the axis of the columnar work with the axis of the bag. A guide means, a bundle of a large number of pins, an opening machine capable of enlarging and reducing the positions of these pins on radiation, and an automatic opening machine and an automatic sealing machine. Automatic desorption device. 6. The bag chuck according to claim 1, wherein said bag chuck is provided with control means for controlling a pressing force such that a relative friction between said work and said bag is generated between said work and said bag. The apparatus for automatically removing and attaching a bag of a columnar work according to claim 5. 7. The bag chuck according to claim 5, wherein the bag chuck comprises an elastic contact member, a shock absorber, and a moving mechanism for moving the contact member in a direction perpendicular to the axis of the workpiece and in an axial direction.
7. The apparatus for automatically attaching and detaching a bag for a columnar work according to claim 6. 8. The columnar structure according to claim 5, wherein the widening device is formed by erecting a number of pins on a number of aperture plates of an iris aperture. Automatic desorption device for work bags.