JPH01184125A - Synthetic resin film perforating apparatus and perforating mechanism, release mechanism and gusset folding mechanism thereof - Google Patents

Abstract

PURPOSE:To reduce the abrasion of perforating pins and to enhance the durability thereof without applying large load to said perforating pins, by holding a synthetic resin film between a rotary heat roller having a large number of the perforating pins vertically provided thereto and the press roller rotating in the state engaged with said heat roller to form perforations to said film. CONSTITUTION:A perforating mechanism A is constituted of a heat roller 1, the press roller 2 engaged therewith and a brush roller 3. A predetermined number of perforating pins 7 are vertically provided to the outer peripheral surface 6 of the roller main body 4 of the heat roller 1. The tubular synthetic resin film D fed to a perforating mechanism A is held between the rotary heat roller 1 and the press roller 2 having elasticity and, at this time, small drain holes are efficiently and continuously provided to the tubular synthetic resin film D by the perforating pins 7 arranged to the outer peripheral surface 6 of the roller main body 4 of the heat roller 1. By this method, the small drain holes are provided under extremely small load by thermal pin perforating work by the perforating pins 7 of the heat roller 1.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a synthetic resin film perforation device for making a plurality of small holes in a synthetic resin film. , a synthetic resin film hole punching device for punching a plurality of small holes in a sheet-like synthetic resin film such as a tubular synthetic resin film for vegetable bags or an agricultural vinyl sheet, as well as a mechanism for punching the holes, a peeling mechanism, and a gusset folding mechanism. It is related to.

[Conventional technology]

BACKGROUND ART Generally, bags for draining fresh sprouts or vegetables used in the kitchen are bags in which one end of a tubular synthetic resin film is heat-sealed. There are a plurality of small holes for draining water or ventilation holes.

The small holes to be made in the fresh sprout draining bag or vegetable bag, etc.
Conventionally, after heat-sealing one end of a tubular synthetic resin film and separating it into bags, the bags are stacked and the protruding holes are inserted into a press machine equipped with pins to form multiple small bags. It was manufactured by drilling holes.

[Problem to be solved by the invention]

However, since the punching with a press machine is carried out with a large number of stacked synthetic resin film bags, a large load is applied to the pins during punching, resulting in significant wear and tear, resulting in a short life span. Further, since the hole drilling work is performed intermittently, the work efficiency is not good and it is time consuming. Moreover, hole opening is limited due to restrictions on pin attachment, and it is difficult to narrow the interval between the bins to a predetermined value or less. Therefore, there are problems in that it is difficult to obtain a synthetic resin film bag with a sufficient number of small holes for drainage and ventilation.

The present invention was made to solve the above-mentioned problems, and its objectives are to provide durability, improve work efficiency, allow a sufficient number of small holes to be drilled, and extend service life. The present invention is intended to provide a synthetic resin film perforation device, a perforation mechanism, a peeling mechanism, and a gusset folding mechanism.

[Means to solve the problem]

In order to achieve the above object, the synthetic resin film aperture device of the present invention includes a heat roller having a pipe heater built into the roller body and a plurality of aperture pins erected on the outer peripheral surface of the roller body. and a peeling mechanism consisting of a support roller and a divider plate provided with a divider hanging roller that is engaged and supported by the support roller. and a gusset folding mechanism comprising two distant plates attached to the peeling mechanism and gusset folding plates for going in and out provided on the left and right sides of the two distant plates. It is something.

[For production]

When the synthetic resin film is fed into the hole punching mechanism, the synthetic resin film is held between a heat roller and a press roller,
A desired and sufficient number of small holes are punched with a small load by the punching action of the heat of the pin, which is provided on the heat roller. When the synthetic resin film is tubular (cylindrical), it is then conveyed to a peeling mechanism, and the heat-adhered inner surface of the tubular synthetic resin film is peeled off by a divider plate. When a tubular synthetic resin film is made into a gusset, it is further conveyed to a gusset folding mechanism and folded into a gusset by left and right gusset folding plates that go in and out between the two distant plates.

〔Example〕

Examples will be described below with reference to the drawings.

Example 2 Figure 1 shows an example of a synthetic hole punching device for punching small holes for drainage in a tubular synthetic resin film, such as a bag for draining fresh sprouts in the kitchen.

This synthetic resin film hole punching device is composed of a hole punching mechanism A, a peeling mechanism B provided below the hole punching mechanism A, and a gusset folding mechanism C installed below the peeling mechanism B. The hole punching mechanism A is composed of a heat roller 1, a press roller 2 that engages with the heat roller 1, and a brush roller 3. As shown in FIGS. 2 and 3, the heat roller 1 has a shaft 5 provided at the center of the roller body 4, and a plurality of pins 7 arranged vertically in a predetermined number of holes in the outer peripheral surface 6 of the roller body 4. has been done.

The shaft 5 has a built-in pipe heater 8 that heats the roller body 4 in which the pin 7 is provided, and a temperature sensor 9 that detects the temperature of the roller body 4. The pipe heater 8 and the temperature sensor 9 are connected to the controller 10. The temperature of the roller body 4 is maintained at a desired temperature. For the hole opening, the pin 7 has the shape of the hole to be opened, for example, circular,
square.

The hole is shaped like a diamond, and the number and arrangement of the holes correspond to the number and arrangement of the holes to be made. The presser roller 2 is a heat-resistant and elastic roller made of silicone rubber, for example, and is engaged with the heat roller 1 to form a tube shape.
The synthetic resin film D is held in between. Incidentally, above the hole opening mechanism A, there are a pinch roller 11 and a guide roller 12. The peeling mechanism B provided below the hole opening mechanism is composed of a divider plate 15 provided with a support roller 13 and a divider hanging roller 14 that is engaged and supported by the support roller 13. The divider plate 15 separates the inner surface of the tubular synthetic resin film D, and has a shape similar to a baseball field pitcher, as shown in FIG. As shown in FIG. 5, the divider plate 15 is supported by a pair of support rollers 13 provided on both sides via a divider hanging roller 14 while being completely covered by the synthetic resin film D being conveyed. . Directly below the peeling mechanism B, a gazette folding mechanism C is attached. The gusset folding mechanism C includes two distant plates 17a and 17b provided close to each other via a fixed rod 16, and a gusset folding plate 18a provided on the left and right sides of the two distant plates 17a and 17b, which go in and out between the two distant plates 17a and 17b. 18b and two distant plates 17a.

Consisting of holding rollers 19 provided before and after 17b,
It is fixed to the divider plate 15 of the peeling mechanism B with screws. Further, below the gazette folding mechanism C, there is a guide roller 2.
0 and a pinch roller 21.

The tubular synthetic resin film D, which has passed through the upper guide roller 12 and pinch roller 11 and is conveyed to the perforation mechanism A, is held between a rotating heat roller 1 and an elastic presser roller 2, and is heated at this time. The holes arranged on the outer circumferential surface 5 of the roller main body 4 of the roller 1 are used to form a predetermined number of draining small holes 22 in a predetermined arrangement in a tubular synthetic resin film D using pins 7 as shown in FIG. are efficiently and continuously drilled. The temperature of the roller main body 4 at this time varies depending on the material and thickness of the synthetic resin film D, the number of small holes 22 to be formed, etc., and therefore, the holes are maintained at an appropriate temperature while forming the holes. As a result of this perforation, debris adheres to the outer circumferential surface 6 of the roller main body 4 of the heat roller, but this is removed by the brush roller 3 that rotates while engaging with the heater roller.

The holes of the heat roller are punched by the heat using the pin 7, and the holes are punched with an extremely small load. Therefore, the number of pins 7 is not limited to the number of holes arranged on the outer peripheral surface 6 of the roller body 4, and the necessary number of holes are formed, and the synthetic resin film D has a predetermined sufficient number of small holes 22.
is drilled.

Next, the synthetic resin film D is conveyed downward to the side of the peeling mechanism B, and the inner surface, which has been brought into close contact with the film by heat, is peeled off by the divider plate 15 of the peeling mechanism B. At this time, the front and rear films of the synthetic resin film D are held and spread by the divider suspension roller 4 and the support roller 3, and are simultaneously branched by the divider plate 15, so that the closely adhered inner surface can be peeled off well. Thereafter, the synthetic resin film D is further conveyed to the lower gusset folding plate C. Then, two distant plates 17a separate the films before and after the synthetic resin film D.

Discund plate 17a is further separated by 17b.
, 17b, the left and right gazette folding plates 18a and 1
At step 8b, fold the left and right sides of the tubular synthetic resin film D into the gusset. After that, the lower end of each bag is sealed by a heat sealing machine (not shown) through the lower guide roller 20 and pinch roller 21 of the gusset folding mechanism C, and then each bag is separated by a cutting machine. A gusset bag made of synthetic resin film is produced by cutting.

Example (2) Example (2) is an example of making a synthetic resin film bag, such as a vegetable bag, which does not require gusset folding.

In this case, a synthetic resin film hole punching device is used which is equipped with only the hole punching mechanism A and the peeling mechanism B without the gusset folding mechanism C. And tubular synthetic resin film D
To make a hole, a small hole 22 is made by mechanism A, and then the inner surface, which has been tightly sealed by heat, is peeled off by the divider plate 15 of peeling mechanism B, and then a portion corresponding to the lower end of the bag is sealed using a heat sealing machine. The bag is sealed and then cut into individual bags using a cutting machine to produce flat type bags made of synthetic resin film. Incidentally, if it is not necessary to seal the lower end, the sealing step is omitted, and the sheet is transported to a cutting machine and cut into cylindrical pieces.

Example (2) Example (2) is an example in which holes to serve as ventilation holes are made in a sheet-shaped synthetic resin film D, such as an agricultural vinyl sheet, which does not need to be folded into a gazette or made into a bag or cylinder shape.

In this case, the synthetic resin film hole punching apparatus is provided with only the hole punching mechanism A without the gusset folding mechanism C and the peeling mechanism B. And sheet-shaped synthetic resin film D
The holes are formed by the heat roller 1 having a plurality of pins 7 erected thereon by the mechanism A, thereby producing a synthetic resin film D having a plurality of small holes 22 formed therein.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

Holes are punched by holding the synthetic resin film between a rotating heat roller with multiple pins installed and a presser roller that rotates while engaging with the rotating heat roller, so a large load is not applied to the pins during hole punching. Therefore, wear is reduced, durability is increased, and of course, life span is also increased.

Further, since the holes are continuously punched by a rotating heat roller, the work efficiency is improved and the effort required is reduced.

Furthermore, holes placed upright on a rotating roller are not simply drilled with a pin, but are heated by a heat roller with a built-in pipe heater, so holes with such high mechanical strength cannot be drilled using pins. Holes can be easily drilled without any holes. Therefore, there are no restrictions on pin installation, and the pin spacing can be narrowed to below a specified value, and a bag or sheet-like synthetic resin film with a sufficient number of small holes for drainage or ventilation is used. can get.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of an embodiment of the synthetic resin film aperture apparatus according to the present invention, Figs. 2 and 3 show the heat roller of the apparatus shown in Fig. 1, and Fig. 2 is a front view thereof. 3 is an enlarged sectional view in the side direction, FIG. 4 is an enlarged perspective view of the peeling mechanism and gusset folding mechanism of the device shown in FIG. 1, and FIG. 5 is an enlarged side view of the peeling mechanism. , FIG. 6 is a front view of a synthetic resin film in which small holes are formed by the present device. A: Hole opening mechanism B: Peeling mechanism C: Gazette folding mechanism D: Synthetic resin film: Heat roller 2. ...Press roller 4 ...Roller body 6 ...Outer peripheral surface 7 ... Hole is pin 13 ... Support roller 14 ... ...Divider hanging roller 15...Divider plates 17a, 17b...Distant plates 18a, 1
8b・・・・・・Gazette folding plate -ICO Figure 6 8θ Rin A opening h film)

Claims (4)

[Claims] (1) A hole consisting of a heat roller with a built-in pipe heater in the roller body and a plurality of hole punching pins erected on its outer circumferential surface, and a presser roller that engages with the heat roller to clamp the synthetic resin film. an opening mechanism, a peeling mechanism composed of a divider plate provided with a support roller and a divider hanging roller that is engaged and supported by the support roller, two distant plates attached to the peeling mechanism;
A synthetic resin film punching device comprising a gusset folding mechanism comprised of gusset folding plates that are provided on the left and right sides of two distant plates and that move in and out. (2) The roller body has a built-in pipe heater, and is composed of a heat roller with a plurality of hole-punching pins erected on its outer peripheral surface, and a presser roller that engages with the heat roller and clamps the synthetic resin film. A hole punching mechanism featuring (3) A peeling mechanism characterized by comprising a divider plate provided with a support roller and a divider hanging roller that is engaged and supported by the support roller. (4) A gusset folding mechanism comprising two distant plates and a gusset folding plate provided on the left and right sides of the two distant plates to move in and out.