JPS6349890Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention consists of a magnetic disk enclosed in a jacket made of vinyl chloride, etc., and the jacket can be inserted into a computer, word processor, etc. The present invention relates to an apparatus for manufacturing a jacket for a so-called floppy disk used in a floppy disk.

[Prior Art] This type of jacket is used with the jacket set in a computer as described above, and therefore, high precision is required for its dimensions. This is because if there is a problem with dimensional accuracy, it will cause problems in setting and operability.

Therefore, in the past, efforts have been made to achieve high precision in the production of jackets. One method for achieving this is to securely fix the jacket sheet in a predetermined position and then fold it based on this fixed position, or use point heat. There is a proposal to do a seal. The invention related to Publication of Utility Model Publication No. 56-53504 relates to a means for fixing the jacket sheet before folding.
The mold sheet mounting base 9 is provided with a boss 10, and the sheet is positioned by fitting the boss 10 into the hole 6 on the sheet side.

[Problems with the Prior Art] However, in this known example, when the sheet is folded, the boss 10 separates from the sheet on the reversing side, and remains unfixed during the reversal. As a result, when the sheet is inverted and superimposed on the fixed side sheet, the hole 6 shifts from side to side and does not match the fixed side boss 10, and is forcibly held down by the folding member 14, causing the hole 6 to The disadvantage is that the edges of the paper may be damaged or peeled off. If the accuracy of the holes 6 deteriorates in this way, the rotation of the magnetic disk or the rotation of the disk rotating shaft may be inhibited, or fine particles may be generated due to contact friction, causing errors.

From this point of view, the present invention, when setting the jacket sheet in the manufacturing equipment, does not fit the bosses into the center hole of the jacket sheet as in the above-mentioned known example, but instead inserts bosses into the head holes of the jacket sheet. The present invention proposes an apparatus that can manufacture high-performance jackets by fitting the bosses and keeping the bosses fitted in the head holes even while the folding side jacket sheet is being turned over, thereby eliminating the cause of so-called left-right misalignment. is the purpose.

[Means for Solving the Problems] The configuration of the present invention proposed to achieve the above object is as follows.

A boss having the same shape as the head hole of the jacket sheet and into which the head hole fits is protrudingly provided on the upper surface of the flat jacket sheet mounting plate at a position corresponding to the head hole on the front side of the jacket sheet. A concave portion is formed by cutting out the center of the jacket sheet mounting plate, and one side of the jacket sheet mounting plate on the boss side is folded onto the upper surface of the jacket sheet mounting plate or horizontally
A reversing plate that can be expanded 180° is provided, and the upper surface of the reversing plate on the folding side,
The jacket sheet mounting plate has an inverted boss that is located at the center of the head hole on the back side of the jacket sheet and that can be fitted into the recess of the boss and that is slightly wider than the head hole width. A magnetic disk jacket manufacturing device having head holes facing both the front and back surfaces of the jacket, characterized in that a flat mandrel with a hole into which a boss of a jacket sheet mounting plate can be inserted is disposed above the mandrel so as to be freely descendable.

[Function] In the above device, the front side of the jacket sheet is placed on the jacket sheet placement plate,
The back side is laid out on the reversal plate, and the head holes of the jacket sheet fit into the bosses on the plate and the bosses on the reversal side, respectively.

Once the jacket sheet is set in this manner, the mandrel descends and presses the front side of the jacket sheet on the jacket sheet mounting plate. At this time, the boss fits into the hole on the mandrel side and is exposed on the upper surface of the mandrel.

Next, the inversion plate is inverted, and the back side of the jacket sheet is folded 180 degrees onto the mandrel and overlapped.

At this time, the reversing side boss of the reversing plate is fitted into the recess of the mounting plate side boss, and the position is fixed.

In this way, with the jacket sheet folded and fixed, the sealing margins formed on the three front sides of the jacket sheet on both sides are folded over the reverse side, that is, the inverted side, and sealed. Configure the jacket.

[Example] Fig. 1 is a perspective view showing the entire apparatus according to the present invention, in which 1 is a machine base, 2 is a flat jacket sheet mounting plate fixed on the machine base 1, and 3 is the same as described above. A reversing plate is attached to the distal end side of the mounting plate 2 so as to be foldable and reversible by 180 degrees by a shaft 4, and 5 is a reversing frame for reversing the reversing plate 3 to the mounting plate 2 side about the shaft 4, This inversion frame 5 is supported by a shaft 6. Reference numeral 7 denotes a mandrel set on the mounting plate 2 so as to be able to rise and fall freely, and this mandrel 7 is used to secure a storage space for the magnetic disk when folding the jacket sheet.

8, 8' are side reversing plates on both sides of the mounting plate 2 for reversing the heat sealing margin formed on the jacket sheet, and 9, 9' are the rotation shafts of these side reversing plates 8, 8'. be.

Reference numeral 10 denotes the upper surface of the mounting plate 2, and there is a boss protruding at the position where the head hole on the front side of the jacket sheet is located when the front side of the jacket sheet is placed. It has a size that allows it to fit, and a recess 11 is formed in the middle width direction.

Reference numeral 12 is the upper surface of the reversing plate 3, and when the back side of the jacket sheet is placed, there is a reversing side boss protruding at the position where the head hole on the back side of the jacket sheet is located. It fits into the recess 11 of the boss 10 on the writing plate 2 side and has a width slightly smaller than the head hole width. In the figure, 7' is a hole in the mandrel 7 that escapes the boss 10.

FIG. 3 is a perspective view of the mounting plate 2 and the reversing plate 3.

Figure 2 is a developed view of jacket sheet a.
This jacket sheet a has a center hole b and an oval head hole c at symmetrical positions with respect to the X-X line, that is, the folding line. Heat sealing margins d, d', and d'' are formed on the three sides of the front side that is placed on the mounting plate 2 side.In the case of the example, the jacket sheet a is made of vinyl chloride. be.

Next, the operation of the apparatus of the above embodiment will be explained. As shown in Figure 4, the jacket sheet a
The front side is placed on the mounting plate 2, and the back side is placed on the reversing plate 3. At this time, the boss 10 and the reverse side boss 12 are fitted into the head hole c of the jacket sheet a, respectively, and the position of the jacket sheet a is fixed.

Next, as shown in FIG. 5, the mandrel 7 descends onto the jacket sheet a on the mounting plate 2 side and presses the jacket sheet a. On this occasion,
The boss 10 enters the hole 7' and is exposed on the upper surface of the mandrel 7.

Next, as shown in FIG. 6, the reversing frame 5 operates to reverse the reversing plate 3, folding the jacket sheet a along the match.

In this overlapping state, the reversal side boss 12 on the reversal plate 3 side is fitted into the recess 11 of the boss 10 on the mounting plate 2 side.

Next, as shown in FIG. 8, the reversing plate 3 is
When it is reversed 180 degrees and returned to its original position, the side reversing frames 8 and 8' are activated to bend the heat sealing margins d and d'' on both sides of the jacket sheet a, and perform point sealing at several locations. The jacket thus completed is shown in FIG.

[Effects of the present invention] As described above, the present invention provides bosses that fit into the head holes of the jacket sheet on the mounting plate side, and also provides bosses on the reversal side that fit into the head holes on the reversal plate side. Since the jacket sheet on the folding side is fixed by the boss on the reversing side when folding the jacket, the jacket sheet on the folding side does not move from side to side during folding.

As a result, in the jacket, the center hole and head hole match on both the front and back sides, and there is no left-right misalignment as in the conventional case, so a high-performance jacket can be provided. Furthermore, in the past, it was not possible to increase the manufacturing speed much because high precision was required, but according to the present invention, it is also possible to manufacture jackets by a high-speed automatic method.

The boss on the reverse side may have any shape as long as it matches the width of the head hole, and in this case, the recess on the boss side is shaped to match the boss on the reverse side.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a developed view of a jacket sheet, Fig. 3 is a perspective view showing a mounting plate and a reversing plate, Figs. FIG. 9 is a perspective view of the completed jacket. 1... Machine stand, 2... Placement plate, 3... Inversion plate, 5... Inversion frame, 7... Mandrel, 8, 8'... Side inversion frame, 10...
Boss, 11... recess, 12... reverse side boss.

Claims (1)

[Scope of Claim for Utility Model Registration] On the upper surface of the flat jacket sheet mounting plate, a boss is provided protrudingly in a position corresponding to the head hole on the front side of the jacket sheet, into which the head hole of the jacket sheet fits exactly. In addition, the center of the boss is cut out to form a concave portion, and one side of the jacket sheet mounting plate on the boss side is folded onto the upper surface of the jacket sheet mounting plate or unfolded at 180° in the horizontal direction. A reversing plate is provided on the upper surface of the reversing plate on the folding side, located in the center of the head hole on the back side of the jacket sheet, capable of fitting into the recess of the boss, and having a width slightly smaller than the width of the head hole. a reversing side boss is provided protrudingly above the jacket sheet mounting plate;
A magnetic disk jacket manufacturing device having head holes facing each other on both the front and back sides of the jacket, characterized in that a flat mandrel with a hole is arranged so that the boss of the jacket sheet mounting plate can be freely lowered.