JPH084679Y2 - Ring fluorescent tube chuck device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Use The present invention relates to a chuck device that allows a single device to grip different types of annular fluorescent tubes of different sizes in the manufacturing process of the annular fluorescent tube.

(B) Prior Art As a conventional chuck device for holding different kinds of annular fluorescent tubes having different sizes, there is one disclosed in Japanese Utility Model Laid-Open No. 63-135754. As shown in FIG. 7, in the chuck device according to this conventional technique, the movable arms b are rotatably attached to the tips of the three fixed arms a in the circumferential direction and the like. Is provided with a rotating body c, and the rotating body c is connected to a movable arm b by a link d. The tip of each movable arm is connected to the inner or outer circumference of the fluorescent tube to be held as shown in FIG. It is configured by forming first and second engaging portions e and f that engage with each other. When holding a small-diameter fluorescent tube, the first engaging portion e is engaged with the outer circumference of the fluorescent tube B, Further, when holding a large-diameter fluorescent tube, the second locking portion f is adapted to engage with the inner circumference of the fluorescent tube.

By the way, in the manufacturing process of the annular fluorescent lamp, there is an operation of heating and softening the fluorescent tube with a tube bending device to form an annular shape, but since this forming operation takes time by necessity, the operation performed after that, For example, the work of mounting the cap is relatively short (less than half). For this reason, there occurs a phenomenon that the capacity is surplus at the place where the work on the downstream side of the molding work is performed. For this reason, if there are a plurality of molding devices for one downstream device, the remaining capacity of the downstream device can be effectively utilized, but the upstream molding device is used to make different types of fluorescent tubes of different sizes. In the case of using a plurality of devices, it is desirable to have a chuck device that can transfer or transfer a plurality of different types of fluorescent tubes with one device in order to simplify the entire manufacturing line.
In addition, in the work of attaching the base, the chuck device used for transferring the fluorescent tube is also a part of the fluorescent tube, that is, a circular fluorescent tube, regardless of the diameter of the fluorescent tube, rather than holding the different fluorescent tubes concentrically. It is desirable to be able to hold the pipe between the pipe ends facing each other such that, for example, the mouthpiece mounting portion is always in a fixed position.

However, the conventional chuck device as described above has a problem that different types of fluorescent tubes having different sizes can be held only concentrically. Moreover, there is a problem that only two types of fluorescent tubes can be handled.

(C) Problem to be Solved by the Invention The problem to be solved by the invention is that in a chuck device for an annular fluorescent tube, different fluorescent tubes of different sizes are not aligned in the center of the fluorescent tube, The part, particularly the mouthpiece mounting part, is always arranged and held at substantially the same position of the chuck device.

(D) Means for Solving the Problems In a chuck device for an annular fluorescent tube according to the present invention, a plurality of guide members are attached to a support arm in parallel with each other, and each of the guide members is diametrically symmetrical with the peripheral surface of the fluorescent tube. A pair of holding devices that are engaged at the positions are movably attached to each other, and the distance between the pair of holding devices is changed according to the size of the fluorescent tube to be held. A common rotating member to be moved is attached to connect one point of the peripheral portion of the rotating member to one of the holding devices of each pair, and a position substantially diametrically symmetric to the one point. It should be connected to the other retaining device of each pair of retaining devices and maintain the distance between the line passing through the center of each retaining device of one pair and the line passing through the center of each retaining device of the other pair. Consists of almost half the difference in the diameter of the fluorescent tube ing.

(E) Action In the above configuration, when holding the annular fluorescent tube, all the holding devices start moving at the same time when the turning member is turned by the driving device, but the intervals are small when the diameter of the fluorescent tube to be held is small. A pair of holding devices engage the peripheral surface of the annular fluorescent tube to hold the fluorescent tube. Further, when the diameter is large, a pair of holding devices having a large space are engaged with the peripheral surface of the fluorescent tube to hold the fluorescent tube.

(F) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 4, a chuck device 1 for an annular fluorescent tube of this embodiment is shown. In the figure, the chuck device 1 is moved to the support arm 2 and a pair of guide members 3 and 4 attached to the support arm at substantially right angles and at predetermined intervals w so as to project to both sides, respectively. A pair of holding devices 5 (5a, 5b) attached so that they are possible
And a pair of holding devices 6 (6a, 6b) movably attached to the guide member 4. The cross-sectional shape of the guide members 3 and 4 is substantially inverted trapezoidal so as to be movably connected to the holding devices 5 and 6 in a known dovetail type, as is apparent from FIG.

The holding device 5 has a movable member 7 movably attached to the guide member 3 in the manner of a dovetail groove as described above, and a pair of holding members 8 fixed to both sides of the movable member. As shown in FIG. 2, a semicircular notch 9 which engages with the inner circumference of the fluorescent tube is formed in the portion 8. Like the holding device 5, the holding device 6 also has a movable member 11 and a pair of holding members 12, and a semicircular cutout 13 is formed in the holding member. The distance between the pair of holding devices 5a and 5b is smaller than the distance between the other pair of holding devices 6a and 6b. This is because the holding device 5 holds a fluorescent tube having a smaller diameter than the holding device 6.

The central axis O-O of the guide member 3 and the central axis O'-O 'of the guide member 4 are lines connecting the centers of the pair of holding devices 5 and 6 in this embodiment, that is, the pair of holding members 8 of the holding device, It almost coincides with the line that connects the midpoints of 12 points. The distance w between the central axis, in order to engage the holding member and the fluorescent tubes in the vicinity of a line passing through the center of the fluorescent tube to be held at the position in the diameter direction of symmetry, the pipe center diameter D of the fluorescent tube B ₂ it is preferable to almost one-half of the difference between the ₂ and the tube center diameter D ₁ of the fluorescent tube B _1. Note that the center axis of the guide member and the line connecting the intermediate points between the holding members may be displaced without being coincident with each other.

A rotation member, that is, a rotation lever 15 is rotatably attached to the support arm 2 between the two guide members 3 and 4. One end of the rotation lever 15 is connected to the movable members 7 and 11 of the holding devices 5a and 6a via links 16 and 17, respectively, so that the movement of the rotation lever 15 allows each holding device to move along the guide member. Has become. Similarly, the other end of the turning lever 15 is connected via the links 18 and 19 to the holding devices 5b and 6b.
Of the rotary lever 15 connected to the movable members 7 and 11 respectively.
The respective holding devices can be moved along the guide member by the rotation of.

The support arm 2 is further provided with a driving device 22 such as an air cylinder for turning the turning lever 15, and the driving device is formed integrally with the turning lever 15 via a connecting device 25 or its rotation. It is connected to an arm 21 fixed to the moving lever. As shown in FIG. 4, the coupling device 25 includes a first rod 26 having one end coupled to the arm 21 side, and one end movably inserted into an axial hole of the first rod. A second rod 27, the other end of which is connected to the drive device 25
A pin 29 extending through a slit 28 extending in the axial direction of the first rod and fixed to the second rod 27; a spring bearing 31 fixed to the first rod 26 and a spring bearing 32 abutting on the pin 29. And a spring 30 provided between the two. The pin 29 is movable in the slit 28. This connecting device 25 prevents the driving device 22 from transmitting a force of a certain value or more determined by the spring 30 to the holding device when holding the fluorescent tube by the holding device.

The support arm 2 of the chuck device 1 having the above-mentioned configuration is, for example, Japanese Patent Application No. 56-80161 (Japanese Utility Model Application Laid-Open No. 57-19265) filed by the present applicant.
Similar to the support arm of the "annular insertion device" in No. 4),
It is attached to a mechanism that swings the support arm and at the same time reverses it. Note that the reversing mechanism is not the subject of the present invention, so a description thereof will be omitted.

When the fluorescent device is chucked by the chuck device 1 having the above-described configuration, first, the holding devices 5 and 6 of each pair are brought closer to the center line XX side of the support arm 2. In this state, fluorescent tube B ₁ or
B ₂ is placed on a conveyor 50, for example, as shown in FIG. 6, and a pair of feed claws 51 and a positioning block 52 are used to keep the base A of the annular fluorescent tubes B ₁ and B ₂ fixed between the tube ends. Once in position and brought into position, the support arm 2 is moved to place the retainers 5 and 6 in the ring of the fluorescent tube. That is, when the fluorescent tube B ₁ having a small diameter is sent to the predetermined position, as is apparent from FIG. 1, only the holding device 5 enters the ring of the fluorescent tube B ₁ and has a large diameter. Fluorescent tube B ₂
Is sent, the holding devices 5 and 6 enter into the ring of the fluorescent tube B ₂ .

Thereafter, when the drive device 22 is operated to move the rotary lever 15 in the counterclockwise direction (in FIG. 1), the holding devices 5 and 6 move in the direction away from the center line XX. Then, when holding the fluorescent tube B ₁ having the smaller diameter, the holding member 8 of the holding device 5 engages and holds the peripheral surface of the fluorescent tube at the notch 9. Further, when holding the fluorescent tube B ₂ having a large diameter, the holding member 12 of the holding device 6 engages or contacts with the notch 13 so that the holding device 6 holds the fluorescent tube B ₂ . In this case, the holding member 12 of the holding device 6 is the holding member 8 of the holding device 5.
It contacts the peripheral surface of the fluorescent tube earlier than before.

After holding the fluorescent tube B ₁ or B ₂ by the chuck device 1 in this way, the support arm 2 is swung and the angle is about 180 ° as shown in Japanese Utility Model Laid-Open No. 192654/1982.
The fluorescent tube which is rotated and carried by the conveyor 50 is moved to another position. Drive device when removing the fluorescent tube from the chuck device
22 can be operated in reverse.

In FIG. 5, a chuck device 1'of another embodiment is shown. In this embodiment, the holding member 12 'of the holding device 6'for chucking a fluorescent tube having a large diameter comes into contact with the outer periphery of the ring of the fluorescent tube, and therefore, the rotating member, that is, the rotating member. The method of connecting the lever and each pair of holding devices is slightly different from that of the above-described embodiment, but is otherwise the same. That is, holding devices 5a and 6b '
Are connected to one end of the turning lever 15 and holding devices 5b and 6
a'is connected to the other end of the rotating lever 15. The operation of the chuck device of this embodiment is also the same as the operation of the chuck device of the above embodiment except for the above-mentioned difference. Therefore, detailed description is omitted.

In the above embodiment, the case where two guide members are provided and two pairs of holding devices are provided has been described, but three or more guide members may be provided and three or more holding devices may be provided.

(G) Effects According to the present invention, the following effects can be achieved as compared with the conventional chuck device.

Different types of fluorescent tubes of different sizes can be chucked without making the centers of the fluorescent tubes substantially coincident with each other, for example, by making a part of the ring common to the base mounting portion.

The chuck device can be made to hold three or more types of fluorescent tubes.

[Brief description of drawings]

1 is a plan view of an embodiment of a chuck device for an annular fluorescent tube of the present invention, FIG. 2 is a side view of a holding device, FIG. 3 is a view taken along line III-III of FIG. FIG. 4 is a sectional view of the connecting device, FIG. 5 is a plan view of another embodiment of the chuck device, and FIG.
FIG. 7 is a diagram showing a state in which an annular fluorescent tube is carried on a conveyor belt and fed, and FIGS. 7 and 8 are diagrams showing a conventional chuck device. 1: chuck device, 2: support arm 3, 4: guide member, 5, 6: holding device 15: rotating member, 22: drive device

Claims (1)

[Scope of utility model registration request] 1. A plurality of guide members are attached to a support arm in parallel to each other, and a pair of holding devices that engage with the peripheral surface of the fluorescent tube at positions diametrically symmetrical to each other are movably attached to the guide members. The distance between the pair of holding devices is made different according to the size of the fluorescent tube to be held, and a common rotating member that is rotated by a drive device is attached to the supporting arm to attach the rotating member. One point of the peripheral portion is connected to one of the holding devices of each pair, and a position substantially diametrically symmetrical to the one point is connected to the other holding device of the pair of holding devices; The distance between the line passing through the center of each holding device of one pair and the line passing through the center of each holding device of the other pair is set to be approximately one half of the difference in diameter of the fluorescent tubes to be held. An annular fluorescent tube chuck device.