JPS6039097A - Drill for continuous plastic film band - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Sealing] This invention is a device that makes holes in a soft plastic film band, and is one of the most widely used equipment for bag making equipment and packaging equipment. It is for use as a reserve.

[Known technology]

Make holes in the plastic film strip 111 as shown in Fig. 1 and Fig. 2: As a device for making holes,
6. As shown in Figure 5, there is a punching device consisting of a punch 1 and a die 2, and a punching device that rotates the punch 1 around its axis.
Alternatively, it is known that the punch 1 is heated to such an extent that the film strip P is softened or melted.

It is also known to drill holes by attaching a cylindrical cutter 20 to a stand made of wood or hard synthetic resin.

However, when using 8σ bunches 1 and dies 2, it is difficult to align these 76 holes, and it is difficult to align all the bunches 1 and dies 2, especially when a large number of holes are to be punched at the same time. In addition, if heat is applied to the die, a part of the material in the film strip will swell out of heat, producing irritating gases, which will worsen the unfinished product market and cause problems in the work environment. Heat is applied to the cutting process, and if the bunch 1 is not moved far away from the film strip i+1 during a temporary stop, the film strip i11 will be burned out.

Furthermore, in Shunsei's model, since the cylindrical cutter 20 is pressed against the large pedestal 6, the cutting depth of the cylindrical cutter 2° immediately lowers, and the cut is made by the holder 86 or the PJ cylindrical cutter 20. However, it is difficult to remove the punching waste 4.

[eye fishing]

The present invention is intended to address some of the drawbacks of these known techniques, and is to perforate a film strip F consisting of a very small number of rolled films, one or less than four. The purpose of this invention is to use only a cylindrical cutter instead of a pair of upper and lower matching cutters, and to use a pouch for the mandrel, thereby making it easier to simultaneously drill multiple holes and significantly reducing wear and tear on the pedestal. It is something to do.

〔composition〕

This invention includes a presser foot that presses the plastic film to be punched in the pedestal in the vicinity of the position where the hole is to be punched, at least one chuck that supports a circular cutter whose end is a cutting edge, and a cutting presser. %'AM and lower the chuck,
A punching device x, VC, having means for pressing the holding member and the cylindrical cutter up the pedestal, and a rotation means for rotating or rotating the chuck around its axis with the cylindrical cutter pressed against the pedestal. Upstream of a pair of sandwiched film strip conveying means for intermittently conveying a continuous plastic film strip, at least the surface portion of which the film receiving surface moves in synchronization with the conveying means is made of an elastic layer. The pedestal is provided in the cylindrical cutter, and a knockout pin is provided in the cylindrical cutter. The continuous plastic film is provided so as to be slidable in the l direction, and its upper limit is such that the lower end surface of the knockout pin is at the cutting edge position of the cylindrical cutter. It is a hole device.

In Figure 5, which congratulates the apparatus of this invention based on a typical embodiment shown in the lower figure, 40 is a film intermittent feeding means consisting of a pair of clamping rollers; A support 5'45 is provided in the position blind, and the support 5'45 is made of a roller 4ba whose surface layer is made of elastic rubber or the like, and whose surface is supported by a frame 41Vc horizontally. The pedestal 45 is synchronized with the transfer mechanism 40 and rotates intermittently in the direction of conveying the film strip 11' in the same direction (via the transmission mechanism 46). ! This is the conclusion. The surface speed of the roller 45a does not necessarily have to be the same as that of the conveyance means 40, and it is sufficient that the feed size of the roller 45a is smaller than the diameter d of the pores H should be formed.

A knock 7 out pin 21 that is slidable in the axial direction is provided inside the cylindrical cutter 20 whose cylindrical end is a cutting blade 26, and its outer diameter is the same as the inner diameter of the cylindrical cutter 20. The above-mentioned cylindrical cutter 20 is attached to a chuck 23 together with a knockout pin 21, and the structure of this chuck 26 may be a commercially available one similar to that used in the drilling machine that Tsutomi Machine Tools covets. The cylindrical cutter 20 is installed or removed by opening or closing the fan claw 24 (see Figure 7, J). When the cylindrical cutter 20 is attached to the chuck 26 and the knock 7 out pin 21 is pushed up to the upper limit, the upper end 25 becomes the cutting edge 26 of the cylindrical cutter 20! Adjust so that the surface is negative (see Figure 7, Figure 10, Figure 11)
.

The previous day, the chuck 26 was brought closer to the pedestal 45 each time it stopped, and the cylindrical cutter 20 (with a diameter of 1 country) was attached to the chuck 26.
7) As a means for pressing the cutting blade 26 against the pedestal 45 and pivoting or rotating it around this 411m, for example, a means such as Kyjs 8 and Kyjs 9 is used.

That is, the vertical sliding movement member 60 is removably attached to the lower end of the circular cam 28 rotatably supported by the chuck 237, and has a pin 29 that engages with the circular cam 28. It is provided so as to be able to slide only in the vertical direction with respect to the support tube 27, and eight upper ends 61 thereof project upwardly from the support tube 27, and are always urged upward by springs 62. By fixing the interlocking station 27 and lowering the vertical sliding movement member 60 against the spring 62, the round cam 28 moves around its axis. . This prudence can be easily understood by looking at the screwdriver used to tighten screws into clothes.

In the embodiment shown in the figure, the circular tomb cam 28 is
It is made to be able to move up and down by a slight dimension, for example, about 50,000JQMM, with respect to the support cylinder 27 together with the #I member 60 made by I11jJ, and these are made by the above-mentioned spring 32 (this spring waits for the flexibility of the above-mentioned buffer spring). is pushed upward by. Historically, in this embodiment ~7- The support tube 27 is fixed to a horizontal support frame 66 by a suitable fastener 64, and the support frame 66 is moved up and down each time the pedestal 45 stops. During the downward stroke of the push-down member 65, the support frame 66 is lowered together with the push-down member 65, and when the cutting blade 26 of the cylindrical cutter 20 comes very close to the pedestal 45, the support frame 66 is suspended. A stopper 46 is provided in a part of the machine frame 41, and when the push-down member 65 is lowered to its full height, the lower surface of the stopper 46 hits the vA portion of the vertically sliding movement S member 60, which causes the inner cam 28 to stop. At the same time, the cylindrical cutter 20, which is held by the chuck 26, hits the surface of the strut 45 together with the knock pin 21, and when the push-down member 65 is lowered, the vertical sliding member 60 is lowered, and the circular mound is removed. cam 2
8 is the lQ together with the chuck 26 and the cylindrical cutter 20.
[Turn around 2 to 6 times. Push-down member 65
If you raise it, the upper and lower I'M! Q member 60 is spring 32
It is designed so that it will quickly return to its original position due to its restoring power.

66 is the pedestal 8- for the film emitter around the cylindrical cutter. 45 is a film pressing member.

Next, as shown in FIG. A stand 47 is provided.

In the case using the endless belt conveyor 45b which is a part of the Cono Si'E54b, a large number of chucks 26 are attached in parallel and used separately when drilling holes.

In this case, the direction of the endless belt conveyor 4bbcO should be the same as the northward direction of the film.

As a shōse kakuei with annotation 45 in the history, it may be composed of kyōken 45 or kaiten demori 4bC (see figure 12).

In this invention, which has been established as described above, the PIT foot size (-bag 1
Method) When the intermittent transfer is carried out, the push-down member 65 is lowered every time it stops, the chuck 26 gripping the cylindrical cutter 20 is lowered, and the cutting blade 26 of the cylindrical cutter 20 is used to cut the material on the pedestal 45. Press the film resistor onto the receiver 845. At this time, the cutting blade 26 and the knockout pin 2
Since the lower end surface 25 of 1 is flush with the horizontal plane, the elastic layer 4 on the surface of the support base 45 is pressed together with the film band F by the pressing force.
2 is compressed and pushed in, and the cutting blade 26 comes into pressure contact with the film strip y.

The cylindrical cutter 20 rotates around its am along with the push-down member 65, and the cutting edge 26 cuts out the film strip F in a circular shape. As the push-down member 65 rises, the cylindrical cutter 20 also rises. Knock 7 Utohi 0n 21 depends on its weight or +tne 22 [, its lower 4 fields j
25 presses the hollowed out chips 4 onto the pedestal 45 within the range of its stroke.

When the push-down member 65 rises, the knockout pin 21 also separates from the pedestal 45, the cylindrical cutter 20 also retreats upward, the pedestal 45 moves, and the chips 4 thereon are removed.

In order to remove the layer of chips 4 deposited on the part 845,
In the case of a receiver 845 or a roller 46a and a belt conveyor, a circular mound-shaped rotating slider 46 is brought into contact.

〔effect〕

In this way, in the apparatus of the present invention, the film strip is pressed onto the surface of the pedestal 45 by the cylindrical cutter 20;
Since the cylindrical cutter 20 is turned or rotated, the cylindrical cutter 20 on the M side is sufficient as the cutting blade.
There is no need to worry about alignment, and the position of the cylindrical cutter 20 may be moved to the left or right of the MU Shun, or a large number of cylindrical cutters 20 may be
It is also easy to install them in parallel.

Also, since the chuck 26 is provided with a layer release function,
The cylindrical cutter 20 can also be easily replaced with one of the same diameter or when it is young.

In particular, in the apparatus of the present invention, since the knockout pin 21 is provided which slides on the cylindrical cutter 20 attached to the chuck 26 within the movable range as described above, the film strip F
Place the knockout pin 2 together with the inner cutter 20 on the pedestal 45.
1, so after the cylindrical cutter 20 rotates or rotates to cut out the film strip F, it barely touches the surface of the pedestal 450. Therefore, even if the cylindrical cutter 20 rotates slightly after cutting the film strip 1, the depth at which the surface of the pedestal is damaged is extremely small, and furthermore, the pedestal 45 has a surface that is Coupled with the fact that the position of contact with the cylindrical cutter 20 changes each time the knockout pin 21 of the present invention moves, the life of the pedestal is long. When compared with C.
There are several times to several ten times as many holes as this, and even if the holes are normally punched 60 times per minute, they will last about 10 months.

[Effect of actual flow mode]

Separately stated In the case where a large number of chucks 26 are installed in parallel on a common support holder 66, each chuck 26 can be moved up and down slightly independently.
In the case where the pedestal 45 is provided so that it can be moved upwardly against a slight loosening resistance spring, the surface of the pedestal 45 may be somewhat uneven, or the mounting position of each cylindrical cutter 20 may have a slight difference in the vertical position. Even if there is, the film strip r is pressed by all the cylindrical cutters 20 and has the effect of being perforated.

2- As a means for rotating the chuck 26 around its axis, one side is provided so as to rotate around 111] m by a circular force 428 and a member engaged with this, and the chuck 23 is attached to this. In the embodiment in which the other member is provided to move in the vertical direction 6, the cylindrical cutter 2 can be moved by simply pushing down the NJJtJ material 60 in this vertical movement.
0 can be rotated around that @ gland, l! ;! Rather than requiring a special motor for one rotation, it is also possible to install a large number of motors in parallel in a horizontal location.

One spring serves two purposes.

In addition, when the diameter of the cylindrical cutter 20 is large, a torsion prevention member 6 that can freely rotate is attached to the tip of the knock 7 out pin 21.
7 may be attached (see fig. 10).

[Brief explanation of the drawing]

The drawings show things related to this invention, and Figures 1 and 2 are of a bag material band, which is a type of plastic film band. ! ! Figure 1 is a perspective view showing the drilling process, and Figure 6 is a partially longitudinal side view of the conventional drilling machine during drilling. ? Figure 4 is a partially longitudinal side view of another known device, Figure 5 is a side view of the principle of an embodiment of the present invention, Figure 6 is a side view of the principle of another device, and Figure 7 is a side view of the principle of another embodiment of the present invention. A longitudinal cross-sectional view of the chuck part, 8-8 arrows are shown in Figure 8, and 9 are arrows.
Figure 10 shows the relationship between the knockout pin and the cylindrical cutter, Figure 11 is the cross-sectional side view of the knockout pin and the cylindrical cutter. Figure 12 is a square diagram showing another embodiment of the present invention. In the figure, reference numeral 40...°° Film transfer means, 41...
...Shinjun, 42...Elastic layer, 46...
・Includes transmission, 45...9:, stand, 46a...
...Ro-y, 1 45b...Mendou Funbeya-145C...IP! 1 Inner disc, 20...Cylindrical cutter, 21 Kawakawa notch 7 out pin, 26...Chuck, 24...3
- Claw, 25...lower surface, 25...lower end surface, 26...cutting blade, 27...support tube, 28... Inner cam, 29... Pin, 60... Up and down nI movement member, 31...
...Top end, 62...Spring, 66...
・・Supply ＜, 34・・・・Fastening tool, 65・・・・
...Pushing down member. Shaft discharge fine insert Mesai Kasei Kojo Co., Ltd.

Claims (1)

[Scope of Claims] 1) A pressing member that presses the vicinity of the position where the plastic film to be perforated in 28 is to be perforated, and at least one chuck that supports a circumferential cutter having a cutting blade having a circle ms;
Lower the presser member and chuck, press the presser material and the cylindrical cutter onto the pedestal, and the cylindrical cutter is pressed against the pedestal, cutting the chuck around its @ gland. In a perforation device having a tgI moving mechanism that rotates or rotates 1g/1g, there is a pair of film transporting means of a pair of cooking type for intermittently transporting a slow-rolling plastic film roll. In sync, film 9! (2) is provided with a WJ recording pedestal whose at least the surface extension part is made of an elastic layer, and a knockout pin is provided in the circular cutter so as to be slidable in the aS direction with respect to the cylindrical cutter; A continuous plastic film band perforation device characterized in that the lower end surface of the knockout pin is positioned so as to coincide with the cutting edge position of the cylindrical cutter. 2) The chucks supporting the circumferential cutter can independently move upwardly against the common support frame that approaches and moves away from the pedestal each time the chuck is stopped, slightly resisting the buffer spring. A continuous plastic film strip perforation device according to claim 1, characterized in that it is provided as follows. 6) The device for pivoting or rotating the chuck around the shaft is a circular cam with 411ffM of the chuck and a negative gland, and one member of the pin that engages with this inner cam. Directly or indirectly integrated with the chuck, provided on the common support member, and equipped with another member so as to be slidable only in the axial direction without rotating around the common support member. The upper and lower underwear operating mta members are respectively biased by springs and protrude upward from the common support member, and each time the common support member is lowered, they are lowered in synchronization with the lowering of the common support member. 2. A continuous plastic film strip perforation device according to claim 1, further comprising a common push-down member for pushing down the vertically sliding movement member. 4) The cradle on which the film receptacle moves is a part of a roller, an endless belt conveyor, or a rotating disc supported on a machine frame in the horizontal direction. Continuous plastic film as described in Section 1 of Section 1.