JPS6134612Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is used to manufacture Phillips-type magnetic tape cartridges, VTR magnetic tape cartridges, etc., by preparing an empty cartridge case in which both ends of the leader tape are connected to two tape hubs. Then, each cartridge case is fed in a fixed posture to the magnetic tape assembly position of the device main body, and at this magnetic tape assembly position, the leader tape is pulled out from the cartridge case in a loop shape and cut in the middle. Relating to a magnetic tape assembly device that sequentially connects a predetermined length of magnetic tape between both cut ends and winds it around one tape hub,
In particular, it is designed to detect whether the cartridge case supplied to the magnetic tape assembly position is facing correctly, thereby preventing the occurrence of defective assembly.

That is, this type of magnetic tape assembly apparatus is already known. The problem here is that even if an empty cartridge case is supplied upside down to the magnetic tape assembly position of the device, the magnetic tape can be assembled without any problem. . However, the magnetic tape that should be wound on one of the left and right tape hubs is wound on the other tape hub. As a result, for example, in a Phillips-type magnetic tape cartridge, the so-called A side and B side are reversed, that is, the tape running direction is reversed.

In addition, in a product magnetic tape cartridge, leader tapes of the same length should be connected to both ends of the magnetic tape, but the lengths of the leader tapes are different on the left and right sides, which sometimes causes an inconvenience.

This invention has been proposed to overcome the above-mentioned drawbacks of the conventional technology, and will be described in detail below with reference to the drawings.

This device is intended for a Philips type magnetic tape cartridge, and as shown in Fig. 1, the cartridge case 1 has upper and lower plastic half-cases 1a and 1b with metal tappings at a total of 5 locations at the four corners and the front center. The lids are screwed together by screws 2, and both sides of the leader tape RT are passed through a predetermined tape running path and locked and connected to the left and right internal hubs 3, 3. The magnetic tape MT is assembled into the storage case 1 from the bag. Each tapping screw 2 is screwed in from one side of the front and back, and its head 2a is exposed to the outside while being embedded under the surface of the case.

FIG. 2 shows a front view of the proposed device, and FIG. 3 shows a side view thereof. In front of the main body 5 of the device, a large number of empty cartridge cases 1 are linearly dropped and fed along a guide 6. 1 supply path 7 is formed. Each cartridge case 1 is aligned above the device main body 1 by a mechanism not shown in the drawings in an upright position with the front side of the case facing downward, and in that position the first supply path 7
It is supplied falling sequentially. Within the first supply path,
A large number of cartridge cases 1 are connected in series and fall under their own weight.

A second supply path 10 is formed below the first supply path 7 to allow the cartridge case 1 to drop straight downward along a guide 9 recessed further inside the device body 5. . A relay frame 11 is fixed to the lower end of the first supply path 7 to receive and store the cartridge cases 1 that are about to fall one by one.
A synthetic resin pushing tool 13 that is moved back and forth by an air cylinder 12 is supported on the relay frame 11 . The upper surface of this pushing tool 13 is formed into a smooth receiving surface 13a. By retracting the pushing tool 13, the first
The lower end of the supply channel 7 is opened, and only one cartridge case 1 at the lowest stage in the first supply channel falls into the relay frame 11 and is stored therein, and then, as the pushing tool 13 moves forward, its receiving surface 13a is The lower end of the first supply path 7 is closed to receive and support the subsequent cartridge case group in the first supply path, and the cartridge case 1 already stored in the relay frame is moved to the upper part of the second supply path 10. Push it in and load it. In this way, the empty cartridge cases 1 are sequentially fed one by one from the first supply path 7 to the second supply path 10 at the innermost part.

A brake roller 15 is provided at an intermediate position between the upper and lower sides of the first supply path 7 to buffer the impact of the cartridge case 1 from falling.
A detection switch 16 is provided at the upper end of the first supply path 7 to detect whether or not the cartridge case 1 is in the supply path. As a result of the activation of the detection switch 16, the cartridge cases 1 are sequentially supplied to the first supply path 7 from above the apparatus main body 5 so that the first supply path 7 does not become empty. Further, at the lower end of the first supply path 7, there is a detection switch 1 for checking whether or not the cartridge case 1 is correctly pushed into the second supply path 10 from the relay frame 11.
7 are arranged.

The cartridge case 1 pushed and loaded into the second supply path 10 is held at that position and stands by, and the position immediately below it is set as the magnetic tape assembly position P.
At this magnetic tape assembly position P, the preceding cartridge case 1 is received and supported by support members 19, 19 which are swingably supported on the left and right sides of the lower end of the second supply path 10.

At the magnetic tape assembly position P of the second supply path 10, there is a rotary drive shaft 20 that protrudes and retracts from the front of the apparatus main body 5.
In addition, a proximity switch 21 is provided, and the drive shaft 20 is connected to the hub 3 on the right side of the figure for each cartridge case 1 supported at the assembly position P.
The proximity switch 21 is arranged to be close to and face the exposed head 2a of one tapping screw 2. The operation of these drive shaft 20 and detection switch 21 will be described later.

A known magnetic tape assembly mechanism 23 is disposed below the second supply path 10. The details are shown in, for example, Japanese Unexamined Patent Publication No. 52-153718, but the gist is that the tape splicing block 24 is located diagonally below and to the left of the magnetic tape assembly position P;
A slider 26 that slides along oblique guide rods 25, 25, a cutter 27 for cutting the tape,
It consists of means for leading out the magnetic tape MT from the magnetic tape winding body 28 onto the block 24, and means for leading out the splicing tape ST from the original fabric roll 29 onto the block. And slider 2
At step 6, insert the internal leader tape from the downward facing front of each cartridge case 1 at the assembly position P.
The RT is held under vacuum suction and pulled out to the upper surface of the splicing block 24, and the cutter 27 cuts the middle. Next, the tip of the magnetic tape MT fed out from the magnetic tape winding body 28 is spliced and connected to the cut end of the leader tape portion connected to the right hub 3 with splicing tape ST, and then the drive shaft 20
The right hub 3 is rotationally driven to wind a predetermined amount of magnetic tape MT onto the hub 3. Magnetic tape on right hub 3
When a predetermined amount of MT has been wound up, the drive shaft 20 is stopped, the magnetic tape MT is cut by the cutter 27 on the block 24, and the cut end of the magnetic tape part connected to the right hub 3 is connected to the left hub 3. The cut ends of the leader tape portions are connected again in the same manner using the splicing tape ST, and then the final winding is performed on the right hub 3 to complete the magnetic tape assembly.

Now, as described above, the magnetic tape assembly mechanism 23
is activated and each cartridge case 1 at assembly position P
The magnetic tape is assembled at this assembly position P.
This is only when each cartridge case 1 is guided and supplied with the correct front and back orientation. In other words,
When the front and back sides of each cartridge case 1 are correctly placed in the assembly position P, the head 2a of one tapping screw 2 and the proximity switch 21 are closely opposed to each other, and the proximity switch 21 is attached to the metal head 2a. In response, the magnetic tape assembly mechanism 23 is activated.
However, when the cartridge case 1 is set in the assembly position P with the front and back facing reversely, the proximity switch 21 faces the plastic surface of the case 1 and does not operate the magnetic tape assembly mechanism 23, and the support member 19, 19 are opened to the left and right, and the cartridge case 1 is dropped and discharged as a defective product. In addition, even if the cartridge case 1 is set in the assembly position P with the front and back facing correctly, and the magnetic tape assembly mechanism 23 is activated, the leader tape RT inside it may be too short for some reason. , if jamming occurs inside the case or the leader tape RT gets caught between the half cases 1a and 1b, and the slider 26 cannot reliably hold and pull out the leader tape RT,
The magnetic tape assembly mechanism 23 stops its operation at that point, and the cartridge case 1 is considered to be a defective product and is dropped and discharged downward.

When the magnetic tape MT is assembled to each cartridge 1 at the assembly position P of the second supply path 10, the processed cartridge case 1 is attached to the supporting member 1.
9 and 19 are opened to the left and right and are dropped and discharged downward, and the subsequent cartridge case 1 that was above the second supply path 10 is guided and supplied to the assembly position P as the pushing tool 13 retreats. .

Note that below the magnetic tape assembly mechanism 23, there is a collection mechanism 30 that separates and collects processed cartridge cases 1 dropped from the assembly position P and unprocessed defective cartridge cases 1. is provided.

5 to 8 illustrate the recovery mechanism 30. The processed cartridge case 1 dropped from the magnetic tape assembly position P is received and supported by a carrier 33 having integral left and right guides 31, 31 and a separate stopper 32. This carrier 33 has a motor 34 capable of forward and reverse rotation and gears 35, 3.
6, and rotates back and forth 90 degrees back and forth around the vertical axis indicated by the symbol X in the figure. The stopper 32 is located in a horizontal position at the lower ends of the left and right vertical guides 31, 31, and is swung around the same vertical axis X by an air cylinder 37. Then, the aforementioned defective cartridge case 1 moves from the assembly position P to the guide 3.
1 and 31, the stopper 32 has been retracted forward in advance, and the defective cartridge case 1 is not caught by the carrier 33 but passes through and is guided to the defective product delivery chute 38.
However, the treated cartridge case 1 is supported by the stopper 32 with its lower surface received, and after the carrier 33 is rotated 90 degrees forward by the forward rotation of the motor 34, as shown in FIGS. 7 and 8. When the stopper 32 is opened by the extension operation of the cylinder 37, the liquid is discharged into the downward recovery path 39 in a sideways standing position, and is appropriately recovered. After that, the motor 34
The carrier 33 returns to its original receiving posture by the reverse operation of the cylinder 37 and the contraction operation of the cylinder 37, and this is detected by the limit switch 40 and the motor 34
stops. Thereafter, the process of receiving the processed cartridge cases 1 one after another in the same manner, changing the feeding posture by 90 degrees, and discharging them into the recovery path 39 below is repeated.

The entire structure of the proposed device is as described above.
This is only one specific example of the present invention, and various changes in design are possible in terms of details.

For example, if the target is a magnetic tape cartridge for a VTR, the cartridge case 1
is guided to the magnetic tape assembly position P in an upright position with the front of the case facing sideways, and at that position P the internal leader tape RT is pulled out laterally and outwardly to assemble the magnetic tape MT. Good too.

As explained above, according to this invention, the proximity switch 21 disposed at the magnetic tape assembly position P determines whether the front and back sides of each cartridge case 1 guided and supplied to this assembly position are correct. If the feeding posture of each cartridge case 1 is normal, the magnetic tape MT is installed, and if the feeding posture of each cartridge case 1 is bad, the magnetic tape MT is dropped and discharged without being assembled. It is possible to obtain a product magnetic tape cartridge in which the magnetic tape MT is accurately wound onto a predetermined one of the left and right tape hubs 3, 3 of the cartridge case 1, and to produce a product with the tape running direction in the opposite direction. This can be easily and reliably prevented.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a cartridge case to which the present invention is directed. FIG. 2 is a front view of the assembly device according to the present invention, FIG. 3 is a side view thereof, and FIG. 4 is a cross-sectional view of the main parts thereof. Figures 5 to 8 show the recovery mechanism for processed cartridge cases, with Figure 5 being a front view, Figure 6 being a plan view, Figure 7 being a side view, and Figure 8 being the same as in Figure 7. FIG. DESCRIPTION OF SYMBOLS 1...Cartridge case, 1a, 1b...Half case, 2...Tapping screw, 2a...Tapping screw head, 3...Hub, 5...Device main body, 6...Guide, 7...No. 1 supply route, 9... guide, 10... second supply route, 11... relay frame, 1
2... Relay frame driving means (air cylinder), 13
...Pushing tool, 13a...Pushing tool receiving surface, 1
9... Support member, 20... Drive shaft, 21... Proximity switch, 23... Magnetic tape assembly mechanism, 24...
...Joining block, 25...Guide rod, 26...
...Slider, 27...Cutter, 30...Recovery mechanism, 31...Guide, 32...Stopper, 3
3...Carrier, 38...Defective product delivery chute,
39... Recovery path, P... Magnetic tape assembly position,
RT...Leader tape, MT...Magnetic tape,
ST...Splicing tape.

Claims (1)

[Scope of utility model registration request] At the magnetic tape assembly position P of the apparatus main body 5, a proximity switch 21 is provided that faces the exposed head 2a of the tapping screw 2 of each cartridge case 1, and the proximity switch 21 is used to control the magnetic tape assembly position. It is detected whether each cartridge case 1 is correctly set with the front and back sides facing P, and the magnetic tape MT is installed in the cartridge case 1 whose front and back sides are correctly set at the magnetic tape installation position P.
A device for assembling magnetic tape onto a cartridge case, characterized in that the cartridge case 1, which is set with the front and back facing the opposite direction, allows the magnetic tape MT to be dropped and discharged without being assembled.