JPH0519287B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is capable of automatically adjusting the inner diameter and outer diameter of a cylindrical plastic magnet after molding without having to manually adjust it. This invention relates to an apparatus for adjusting the inner and outer diameters of cylindrical plastic magnets that can be processed.

[Conventional technology]

Conventionally, there are cylindrical plastic magnets used to drive small motors such as stepping motors and spindle motors. The cylindrical plastic magnets can be manufactured by press molding or injection molding, but it is known that burrs occur on the end faces of cylindrical plastic magnets manufactured by these methods. If such burrs occur, remove them by barrel polishing or other methods, and then place the cylindrical plastic magnet in a synthetic resin of the same type as the plastic magnet's constituent material, such as a thermosetting resin such as phenol. The inner and outer surfaces of the cylindrical plastic magnet are coated.

[Problem to be solved by the invention]

However, when a cylindrical plastic magnet whose surface is treated with such a synthetic resin is coated with an uneven amount of synthetic resin, for example, if the dip-coated resin becomes partially thick due to dripping, the inner diameter may change. The outer diameter may become smaller or the outer diameter may become larger.

If a cylindrical plastic magnet with such a difference in inner diameter or outer diameter is used in a small motor, installation may be difficult or malfunction may occur. It is desirable to adjust the diameter.

To adjust the inner diameter, it is possible to insert a pin gauge inside the cylinder of a cylindrical plastic magnet, and to adjust the outer diameter, it is possible to pass a cylindrical plastic magnet through a ring gauge. If the work was done manually, it would not be possible to quickly process large quantities of magnets, which would increase the cost of products incorporating cylindrical plastic magnets, and would not be able to keep up with demand.

Under these circumstances, an automatic device for adjusting the inner and outer diameters of cylindrical plastic magnets after surface coating is desired. The present invention aims to provide such an inner/outer diameter adjusting device.

[Means to solve the problem]

The apparatus for adjusting the inner and outer diameters of a cylindrical plastic magnet according to the present invention, which solves the above problems, has the following configuration.

a work shooter for supplying the cylindrical plastic magnets after molding; and a work shooter located at the end of said work shooter to receive the supplied cylindrical plastic magnets, and transport the cylindrical plastic magnets through a transfer path onto the transfer path. a workpiece supply section that transports the workpiece to a predetermined position and stops; and a transfer path constituting the workpiece supply section that performs a horizontal approach/separation operation and an upward/downward operation from the side toward a cylindrical plastic magnet set at a predetermined position; A picker of a cylindrical plastic magnet associated with a picker horizontal/vertical movement control mechanism having the function of holding and transferring a cylindrical plastic magnet, and a base that moves towards and away from a work supply section by means of a push/pull means. The above-mentioned horizontal and vertical motion control mechanism for the pick car is formed by engaging a pick car mounting member, on which the pick car is attached, to a guide rail erected on a table so as to be able to move up and down; A ring gauge for adjusting the outer diameter of a workpiece, which is set slightly larger than the specified outer diameter of a plastic magnet, and a ring gauge for adjusting the outer diameter of the workpiece, located on the side opposite to the side where the picker is located across the ring gauge for adjusting the outer diameter of the workpiece, and having an outer diameter of a cylindrical plastic magnet. The inner diameter of the magnet is set slightly smaller than the predetermined inner diameter of the magnet, and at the forward limit, the tip that passes through the ring gauge for adjusting the outer diameter of the workpiece protrudes toward the picker side and contacts or approaches the tip of the picker at the front of the picker in the axial direction. A pin gauge for adjusting the inner diameter of the workpiece, the length of which is set, is connected to the push/pull means, and the outer diameter of the outer diameter of the outer diameter of the picker, which is slidably slidable in the axial direction of the picker, is inserted into the ring gauge for adjusting the outer diameter of the workpiece. A pusher is connected to a pusher and a puller, and the pusher is set to a large size.

Alternatively, the width of the work shooter may be set to be slightly larger than the outer diameter of the cylindrical plastic magnet so that the magnet can roll within the work shooter.

In addition, the workpiece supply section includes a U-shaped groove member with an upwardly opened opening formed at a suitable location on one side wall, and a workpiece holding section in the shape of a concave opening upwardly for receiving the workpiece, which is formed at an appropriate location in the length direction of the rod-shaped member. The side shape of the opening of the work holding part is set to be substantially the same as the opening of the groove member, and the rod-shaped member forming the work holding part having such a shape is related to the pushing/pulling means. It is preferable to use a rod-shaped workpiece feeding member that is loosely fitted into the front groove member so as to be movable back and forth in the length direction in the groove of the groove member, and this workpiece feeding member is U-shaped. By setting it in the groove member and moving it in the length direction, the plastic magnet supplied in the work holding part can be moved to the open position and placed on standby for the next processing while controlling the set position. preferable.

Then, the picker performs a picking action on the cylindrical plastic magnet, that is, the workpiece, which is in a standby state. A rod is usually used for the picker, and a tube is used for the ring gauge. It is desirable that the ring gauge be set on one side above the work supply section.

Furthermore, between the ring gauge and the pin gauge push/pull means,
It is preferable that a stopper having a through hole through which a pin gauge can pass is provided upright, and a trough-like shooter is provided below the ring gauge side of the stopper to collect the workpieces whose inner and outer diameters have been adjusted.

Further, a tube body with a fitting groove formed in the proximal side wall is used as a pusher, and both pieces of the inverted U-shaped push/pull piece are externally fitted into this fitting groove, and the longitudinal groove of the inverted U-shaped push/pull piece is fitted. It is desirable to provide a structural relationship in which the pusher can move up and down along the pusher, and at the same time to associate a push/pull means with this push/pull piece.

Note that an air cylinder is generally used as such push/pull means.

[Effect]

The device for adjusting the inner and outer diameters of a cylindrical plastic magnet as described above operates in the following manner.

First, a cylindrical plastic magnet after molding is supplied to a work holding section of a work supply section through a work shooter. Next, by moving the workpiece feeding member located in the U-shaped groove member by the push/pull means, the workpiece supplying part is overlapped at the open position with the workpiece being supplied to the workpiece supplying part, and the U-shaped groove is moved. The workpiece inside the workpiece holding section is exposed from one side of the side wall of the member outward.

Next, the picker is moved by the picker horizontal/vertical movement control mechanism. That is, by moving the picker mounting member up and down while being guided by a guide rail, the picker tip position is moved to a position facing the opening and then stopped. Further, in this state, the base is moved forward by its push/pull means to insert the picker tip into the hole of the workpiece whose position is regulated, and while the picker mounting member is guided by the guide rail in this state. Move it up,
Raise it to the same height as the outer diameter adjustment ring gauge and stop. At this time, the ring gauge for outer diameter adjustment, the picker, and the workpiece are at the same height position.

Next, when the pin gauge for adjusting the inner diameter of the workpiece is inserted into the through hole of the ring gauge and pushed out, the tip of the pin gauge approaches or contacts the tip of the picker while facing the tip. In this state, when the pusher is pushed forward by advancing the pusher, the workpiece pushed by the tip of the pusher is first fitted onto the pin gauge and then inserted into the ring gauge. If this is pushed in further, the workpiece passes through the ring gauge and moves on the pin gauge toward its base end, stopping at a position in front of the stopper.

When this operation is completed, the push/pull means is returned to the base end of the picker, and the pin gauge is pulled back to the base end by the push/pull means, so that the workpiece fitted onto the pin gauge hits the stopper and is removed. . The removed workpiece then falls into the workpiece shooter below and is guided by the shooter and taken out of the apparatus. In this way, by fitting the work into the pin gauge, its inner diameter is adjusted, and by passing through the ring gauge, its outer diameter is adjusted.

〔Example〕

The details of the present invention will be explained based on further illustrated embodiments.

In the figure, 1 is a cylindrical plastic magnet, which is manufactured by press molding a mixture of phenolic resin, other thermosetting resin, and magnetic metal material, and has burrs. Sometimes, this is subjected to a burr removal treatment such as barrel polishing, and its surface is coated with the same material as the synthetic resin of the base material of the plastic magnet 1, such as phenol resin. The cylindrical plastic magnet after this surface treatment is the object of adjustment of the inner and outer diameters by the apparatus of the present invention. Hereinafter, this surface-coated cylindrical plastic magnet will also be referred to as a workpiece.

Also, what is shown as 2 in the figure is a work shooter for guiding the cylindrical plastic magnets 1 supplied in large numbers by various parts supply means, such as a parts feeder (not shown). At least one of both sides is surrounded by walls, and the inner diameter thereof is set to be slightly larger than the outer diameter of the cylindrical plastic magnet 1 so that the magnet 1 can roll. A work supply section 3 is located at the tip of the work shooter 2 which is branched into one or more branches.

This work supply section 3 is a part for correcting the posture of the work 1 supplied from the work shooter 2 when transferring it to the next process. It is configured to receive a shaped plastic magnet 1 and to control its attitude. As shown in the figure, the structure includes a groove member 6 having a generally U-shaped cross section with an upwardly open opening 5 formed in one side wall 4, and a groove loosely fitted in the groove member 6 in the longitudinal direction. It is composed of a workpiece feeding member 9 that moves back and forth. An air cylinder serving as push/pull means 7 is associated with one longitudinal end of the workpiece feeding member 9 so that it can move back and forth within the groove member 6. Further, the workpiece feeding member 9 is formed with a recessed portion opening upward and having a top surface width slightly larger than the outer diameter of the workpiece 1.
This concave portion serves as a work holding portion 8 for receiving the work 1. The shape of the recessed part of the workpiece holding part 8 is set to be approximately the same shape as the opening 5 of the groove member 6, and by overlapping with the opening 5, the workpiece 1 in the workpiece holding part 8 is processed through the opening 5. It is configured to be easy to use.

In this way, the workpiece feeding member 9 is connected to the U-shaped groove member 6.
The end of the work shooter 2 and the opening 5 are set so as to be slightly shifted from each other. Therefore, the work 1 fed by the work shooter 2 is accommodated in the work holding part 8 of the work feed member 9 located at the end of the work shooter 2, and in this state, the push/pull means 7 is operated to move the workpiece 1 into the groove. If the workpiece holder 8 is moved in the direction of the opening 5, the workpiece holder 8 moves to a position where it overlaps the opening 5 while still receiving the workpiece 1. At this time, the through hole 1a of the workpiece 1 is exposed through the opening 5, so that the process for moving to the next step can be performed from the outside of the side wall 4 of the groove member 6 where the opening 5 is provided.

Next, numeral 10 in the figure is a picker made of a cylindrical plastic magnet 1. For this purpose, a rod is usually used, and by inserting the tip of the picker 10 into the through hole 1a of the work 1 in the work holder 8, the work 1 can be picked. The base end of the picker 10 is fixed to a picker mounting member 11 as shown in the figure, and to one side of a plate in the illustrated example. In addition, when installing a plurality of sets of this inner and outer diameter adjustment mechanisms, a plurality of pickers 10 are attached to the picker mounting member 11.
may be installed in parallel. In this embodiment, for convenience, one set of devices will be explained.

The picker 10 is configured to be capable of horizontal and vertical movement by means of a picker horizontal and vertical movement control mechanism. That is, the picker mounting member 11 is associated with a push/pull means 12 such as a cylinder, and is movable up and down through a dovetail groove fitting relationship with a guide rail 13 provided at the side end of the picker mounting member 11 . The vertical position of the picker 10 is set by the push/pull movement (up/down push/pull movement in the illustrated example). Guide rail 1
3 is erected on a base 14, and the base 14 itself is provided on a rail 16 set on the base 15 of the device, and is pushed and pulled by a push/pull means 17. The picker 10 moves toward or away from the work supply section 3. By performing this operation in conjunction with the push/pull movement of the push/pull means 12 (up/down push/pull movement in the illustrated example), the forward or backward movement and the upward or downward movement of the picker 10 are performed at the same time. .

Next, reference numeral 18 denotes a ring gauge for adjusting the outer diameter of the workpiece, which is installed in front of the raised position of the picker 10, and whose inner diameter is set slightly larger than the predetermined outer diameter of the cylindrical plastic magnet 1. The ring gauge 18 for adjusting the outer diameter of the workpiece is fixed to the upper side of the workpiece supply section 3, in the illustrated example, on the right side of the workpiece supply section 3 with a support 19, and the workpiece 1 is fixed to the right side of the workpiece supply section 3. By passing it through the through hole 18a, its outer diameter can be adjusted. Also, 2 in the diagram
0 is a pin gauge for adjusting the inner diameter of the workpiece, and is installed on the opposite side of the picker 10 with the ring gauge 18 in between. The pin gauge 20 for adjusting the inner diameter of the workpiece has an outer diameter set to be slightly smaller than a predetermined inner diameter of the cylindrical plastic magnet 1 that is the workpiece, and its length is set to be slightly smaller than the predetermined inner diameter of the cylindrical plastic magnet 1 that is the workpiece.
It is set so that when the pin gauge 20 passes through the through hole 18a of the ring gauge 18 at the forward limit of the pin gauge 18, its tip protrudes toward the picker 10 and reaches a position where it linearly approaches or contacts the tip of the picker 10. ing. The pin gauge 20 is connected to an air cylinder or the like as a push/pull means 21, and is configured to be able to move back and forth.

22 in the figure is fitted loosely into the picker 10, and the outer diameter of the tip is connected to the through hole 18 of the ring gauge 18.
The pusher 22 is set to a size that can be inserted into the pusher 22, and the pusher 22 is configured to be able to move back and forth in relation to the push/pull means 23. The illustrated pusher 22 is a tubular body, and a groove is provided on the outer periphery to form a fitting groove 24 at least on the upper and lower sides of the proximal side wall, and both pieces of the inverted U-shaped pusher piece 25 are inserted into this groove. The pusher 22 is configured to be able to move up and down along the vertical groove 26 of the push/pull piece 25.
Push/pull means 23 for moving this push/pull piece 25 back and forth
is fixed to the body of the apparatus, which is not in a cooperative relationship with the picker mounting member 11 and the base 14. In addition, 27 in the figure is a through hole 27 through which the pin gauge 20 can be inserted.
A is a stopper provided between the ring gauge 18 and the push/pull means 21, and the lower part 28 is a bucket-shaped shooter for taking out the workpiece 1 whose inner and outer diameters have been adjusted out of the apparatus.

The present device having the above configuration operates as follows. First, the work 1 supplied from the work shooter 2 to the work supply section 3 is transferred to the work supply section 3.
The workpiece is held in the workpiece holding section 8. By moving the workpiece feeding member 9 in this state, the workpiece 1 is moved in a substantially U-shaped manner so that the workpiece holder 8 overlaps the opening 5 position of the substantially U-shaped groove member 6 with the workpiece 1 held in the workpiece holder 8. The workpiece 1 is exposed outwardly on one side of the side wall of the letter-shaped groove member 6.

Next, the picker 10 uses the push/pull means 12 to
The height of the opening 5 is adjusted to be the same as the position of the opening 5 (see FIG. 3 A), and then the base 14 is
Move the picker mounting member 11 to the workpiece supply section 3.
By moving the picker 10 to the side, the tip of the picker 10 is inserted into the through hole 1a of the workpiece 1 in the workpiece holder 8 (see FIG. 3B), and is temporarily stopped in this state.

Next, by operating the push/pull means 12, the picker mounting member 11 is moved upward, and the picker 10 is moved upward.
After lifting it to the same height as the ring gauge 18, it is stopped at the same position (see Fig. 3, c). still,
In this way, when the picker 10 moves up and down, the pusher 2 fitted on the picker 10
2 can freely move up and down while being guided by the vertical groove 26 of the push/pull piece 25.

Next, by operating the push/pull means 21, the inner diameter adjusting pin gauge 20 passes through the stopper 27, further penetrates the ring gauge 18, and protrudes to a position where its tip approaches or contacts the tip of the picker 10 ( (See Figure 3 D). On the other hand, the push/pull means 23
is activated, both pieces of the inverted U-shaped push/pull piece 25 push out the pusher 22 and move it toward the pin gauge 20 side, thereby removing the workpiece 1 held at the tip of the picker 10.
is fitted onto the tip of the pin gauge 20, and by further moving the pusher 22 forward, the workpiece 1 is fitted into the ring gauge 18 and the inner and outer diameters of the workpiece are adjusted.
After this, from the ring gauge 18 to the stopper 27
The workpiece 1 is moved to the right side in the figure, and stopped with the workpiece 1 supported by the pin gauge 20 (see FIG. 3E). Next, the pin gauge 20,
When the push/pull means 21 is operated to move the work 1 toward the push/pull means 21, the position of the work 1 fitted on the pin gauge 20 is regulated by the stopper 27, and when the pin gauge 20 comes out of the stopper 27, the work 1 is moved toward the push/pull means 21 side. 20 , the workpiece 1 whose inner and outer diameters have been adjusted falls and is accommodated in the shooter 28 . The adjusted workpiece 1 stored in the shooter 28 is guided out of the apparatus by the shooter 28, while the picker 10 and pusher 22 return to their original positions to process the next workpiece.

〔Effect of the invention〕

As described above, according to the apparatus for adjusting the inner and outer diameters of a cylindrical plastic magnet according to the present invention, the following effects can be achieved.

1. Adjustment of the inner and outer diameters of cylindrical plastic magnets, such as deburring and surface coating, can be done automatically and quickly in large quantities. In this process, the workpiece held at the tip of the picker by the pusher is fitted onto the pin gauge inserted inside the ring gauge, and the pusher is moved forward to penetrate the ring gauge, simultaneously processing the inner and outer diameters. The work can be done quickly. Moreover, since the workpiece immediately after adjusting the inner and outer diameters is held by the pin gauge for adjusting the inner diameter, it is easy to carry out the workpiece after processing.

2. Since a ring gauge and a pin gauge penetrating through the ring gauge are used as the inner and outer diameter adjustment means, adjustment can be made accurately without failure, and installation of the work supply section, inner and outer diameter adjustment means, and extraction devices is easy. Moreover, since these devices can be combined into a small space, it is easy not only to use a single device but also to combine multiple devices into one device.

3 By using a U-shaped groove member and a work feed member that is inserted into this groove and moves in the length direction, it is possible to provide the work shooter end and the picker processing position in different locations, and the work feed and picker processing position can be separated. Position control becomes easy and accurate.

4 When moving the pusher, an inverted U with vertical grooves is used.
By using the shape push/pull piece, it is possible to easily allow the picker and pusher to move up and down.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the arrangement of essential parts of the apparatus according to the present invention, FIG. 2 is a side view of a specific apparatus, and FIG. 3 is an explanatory diagram of the process performed by the apparatus. 1... Cylindrical plastic, 1a... Through hole, 2...
...Work shooter, 3...Work supply section, 4...
...Side wall, 5...Opening, 6...Substantially U-shaped groove member, 7
...Push/pull means, 8... Work holding part, 9... Work feeding member, 10... Picker, 11... Picker mounting member, 12... Push/pull means, 13... Guide rail, 14... Base , 15...substrate, 16...
Rail, 17... Push/pull means, 18... Ring gauge for adjusting the outer diameter of the workpiece, 19... Pillar, 20... Pin gauge for adjusting the inner diameter of the workpiece, 21... Push/pull means,
22... pusher, 23... push/pull means, 24...
...Fitting groove, 25...Inverted U-shaped push/pull piece, 26...Vertical groove, 27...Stopper, 28...Gutter-shaped shooter.

Claims (1)

[Scope of Claims] 1. A work shooter for supplying a cylindrical plastic magnet after molding; A work shooter located at the end of the work shooter to receive the supplied cylindrical plastic magnet, A workpiece supply section that transports the workpiece through a transfer path to a predetermined position on the transfer path and stops; and a horizontal approach/separation operation from the side toward a cylindrical plastic magnet set at a predetermined position on the transfer path constituting the workpiece supply section. and a picker of a cylindrical plastic magnet associated with a picker horizontal/vertical movement control mechanism, which has the function of holding and transferring a cylindrical plastic magnet by performing upward and downward movements, and a picker of a cylindrical plastic magnet that has the function of holding and transferring a cylindrical plastic magnet. The above-mentioned horizontal and vertical movement control mechanism for the pick car, in which a pick car mounting member, on which a pick car is attached, is engaged with a guide rail erected on a base that moves toward and away from the pick car so as to be able to move up and down; A ring gauge for adjusting the outer diameter of the workpiece, whose inner diameter is set slightly larger than the predetermined outer diameter of the cylindrical plastic magnet, and a ring gauge for adjusting the outer diameter of the workpiece are located on the opposite side of the picker. , the outer diameter is set slightly smaller than the predetermined inner diameter of the cylindrical plastic magnet, and at the forward limit, the tip that passes through the ring gauge for adjusting the outer diameter of the workpiece protrudes toward the picker and meets the tip of the picker at the front of the picker in the axial direction. A pin gauge for adjusting the inner diameter of the workpiece, the length of which is set so as to be in contact with or close to each other, and the pin gauge is connected to the push/pull means and is slidably mounted on the picker in the axial direction of the picker, and the outer diameter of the tip is adjusted to the outer diameter of the workpiece. A device for adjusting the inner and outer diameters of a cylindrical plastic magnet, consisting of a pusher connected to a push-pull means and set to a size that can be inserted into an adjustment ring gauge. 2. The cylindrical plastic magnet according to claim 1, wherein the width of the work shooter is set to be slightly larger than the outer diameter of the cylindrical plastic magnet, so that the magnet can roll within the work shooter. Inner/outer diameter adjusting device. 3. The workpiece supply section has a U-shaped groove member with an upwardly opened opening formed in a proper position on one side wall, and a workpiece holding part in the form of a concave opening upwards for receiving the workpiece is formed at a proper position along the length of the rod-shaped member. and the side shape of the opening of the work holding part is set to be approximately the same shape as the opening of the groove member,
In addition, a rod-shaped member formed with a work holding portion having such a shape is loosely fitted into the front groove member so that it can be moved back and forth in the longitudinal direction within the groove of the groove member in relation to the pushing/pulling means. An apparatus for adjusting the inner and outer diameters of a cylindrical plastic magnet according to claim 1 or 2, which comprises: a workpiece feeding member; 4. The inner and outer diameter adjusting device for a cylindrical plastic magnet according to claim 1, wherein the picker is a rod. 5. The inner and outer diameter adjusting device for a cylindrical plastic magnet according to any one of claims 1 to 4, wherein the ring gauge is a tubular body. 6. The inner and outer diameter adjusting device for a cylindrical plastic magnet according to claim 5, wherein a ring gauge is set on one side above the work supply section. 7. A patent claim in which a stopper having a through hole through which the pin gauge can pass is installed between the ring gauge and the pin gauge pushing/pulling means, and a gutter-like shooter is provided below the ring gauge side of the stopper to collect the workpiece whose inner and outer diameters have been adjusted. An apparatus for adjusting the inner and outer diameters of a cylindrical plastic magnet according to any one of items 1 to 6. 8. As a pusher, a tube body with a fitting groove formed on the proximal side wall is used, and both pieces of the inverted U-shaped push/pull piece are externally fitted into this fitting groove, and the longitudinal groove of the inverted U-shaped push/pull piece is fitted. The cylindrical plastic magnet according to any one of claims 1 to 7, wherein the pusher is provided with a structural relationship along which the pusher can move up and down, and at the same time, a push-pull means is associated with the push-pull piece. Inner/outer diameter adjusting device. 9. An apparatus for adjusting the inner and outer diameters of a cylindrical plastic magnet according to claim 8, which utilizes an air cylinder as the pushing and pulling means.