JPS6025369Y2 - Width expansion guide drawer for synthetic resin cylindrical net - Google Patents

Description

[Detailed description of the invention] This invention consists of a net-like bag made of synthetic resin that can accommodate several pieces of fruit, etc. 1. Initially, when the bag is continuous in a cylindrical shape, In an apparatus for fusing film-like sign pieces of appropriate size, in order to expand the cylindrical net, which is initially made up of strands and is in a condensed state, to an appropriate thickness at the position where the sign pieces are welded. This invention relates to a device that guides and pulls out a continuous cylindrical net in the longitudinal direction using a core used in the invention and a pair of upper and lower rollers positioned opposite to each other in front of the core.

More specifically, in order to partially widen a continuous cylindrical net by inserting a core inside the net, the core must be supported at a predetermined position by some means. Therefore, the present invention places the core on a horizontal base and properly opposes the middle part of the roller as a pair of upper and lower parts in front of the core, thereby making the cylindrical net The guide drawer can be smoothly drawn out.

To explain this with reference to the embodiment shown in the figure, 1 is a rectangular parallelepiped-shaped core having a rectangular cross section and elongated from front to back, and several cores are spaced apart at regular intervals and have approximately the width of a film-like sign piece to be described later. A smooth base 2 with a horizontal upper receiving surface 1a.
The outer circumference of the core is guided by a drum 3 at the rear, and a pair of upper and lower rollers 4 at the front.
A long cylindrical net made of synthetic resin that is intermittently pulled out in the longitudinal direction by the core 1 is wrapped in an enlarged shape, and the net is kept in an expanded state by the core 1. is the above core 1. The net conductor is supported by a pin 1b so as to be able to move up and down at the front surface, and has a semicircular cross section, and the front arcuate surface 1c is brought into approximately equal contact with both circumferential surfaces of the upper and lower rollers 4 at the front. This prevents the core from moving in the direction of drawing out the net.

(The figure exaggerates the gap between the upper and lower rollers 4 and the guide member 10.) 5 is designed to be moved left and right over approximately the middle upper part of the front and back of the core 1 in a direction perpendicular to the direction in which the cylindrical net is pulled out. It is a vacuum suction type conveyor that is connected to a vacuum pump (not shown), and when moving from the right side to the left side in Figure 2,
A long continuous film wound around the drum 6 is held by suction so as to cross over the core 1.

Reference numerals 7 and 8 indicate a film presser and a pedestal, which are adapted to sandwich the film roller from above and below at the side of the drum 6.

Reference numeral 9 denotes a movable body installed in a direction across the upper part of the core 1, and a heating plate 10 is provided on the lower surface of the core 1 so as to face the upper surface 1a of the core 1. A heat-resistant receiving plate 1 with elasticity such as silicone rubber installed on the surface 1a
A spring member 11 is provided on the lower surface of the heating plate 10 to press the intermediate upper surface of the film roller supplied to the upper surface of the cylindrical net eye that is in a stopped state when descending. is provided so that a portion thereof protrudes below the heating plate.

Reference numeral 12 denotes an injection pipe for ejecting cooling air onto the receiving plate 1b in the core when the movable body 9 is raised; 13 is a cutting blade provided at both ends of the movable body 9; A film cutter 14 is provided in the middle of each of the cores 1 at a forward position where the film roll fused to the net moves together with the net. It is a fixed blade.

In the present invention, the core for expanding the width of the cylindrical net is prevented from moving forward by a semicircular guide body 1c interposed between a pair of upper and lower rollers at the front part of the core, and the core is prevented from moving forward. By holding the net movably up and down relative to the core, the cylindrical net can be drawn out smoothly by the rollers.

Next, regarding the function of the device of the present invention, first, several cylindrical nets pulled out from the drum 3 are intermittently adjusted to an appropriate size by the front roller 4, each of which has a core 1 encapsulated inside. Furthermore, when the movable body 9 is in the raised position as shown in FIGS. 1 and 2, the end of the long film roll is attracted by the conveyor 5 and pulled out to the left in the illustrated state. When the movable body 9 is lowered when the feeding of the net and film is stopped, the film roller is pressed against the surface of the receiving plate 1b by the spring member 11, and at the same time both ends of the film are cut by the cutting blade 13, and immediately The periphery of the film is heated and fused by the heating plate 10, and then, at the moment when the movable body 9 moves upward, the injection tube 1
2 blows out cooling air to cool the area around the fused portion.

Next, as the movable body 9 rises, the net toy is pulled out one pitch, and the film is cut into net units by the fixed blade 14 on the front side.
This is because the same operation as described above is then carried out to fuse the desired size of the indicator end to the body of the cylindrical net, as shown in FIG.

By the way, according to the present invention, when supporting the core in a fixed position with the core, which is made by covering the outer periphery with a long continuous cylindrical net and expanding the net, placed on the base, A guide member with a semicircular cross section is attached to the front part of the child so as to be able to move up and down, and the front arcuate surface is brought into sliding contact with the middle of a pair of upper and lower rollers for pulling out the cylindrical net. This makes it possible to hold the core in a fixed position on the base, even though it is about to move forward as it is being pulled out, and also prevents misalignment between the center of the core and the contact surfaces of the upper and lower rollers, or the partial thickness of the passing net. If abnormal friction occurs on a part of the drawer net due to discrepancy, 1. The guide body is automatically adjusted so that it can move up and down and always come into contact with the upper and lower rollers on the front surface evenly, resulting in the effect that the cylindrical net can be drawn out and guided smoothly.

[Brief explanation of the drawing]

Figure 1 is a cutaway side view of the main part equipped with the device of the present invention, Figure 2
The figure is a front view of the same, Figure 3 is an enlarged sectional view of the main part of Figure 1, and Figure 4 is a front view of the same.
The figure is a perspective view of the cylindrical net after film fusion. 1 is the core, 1c is the derivative, 1e is the arc surface, 2 is the base,
4 is the upper and lower rollers, A is the cylindrical net, and the opening is the film.

Claims (1)

[Scope of utility model registration request] By encasing the core, which has a substantially rectangular cross section and is placed on a smooth base, the long cylindrical net is expanded by a pair of upper and lower rollers at the front and pulled forward in the longitudinal direction. In the device, a guide member having a semicircular cross section is attached to the front surface of the core so as to be movable up and down, and the front arcuate surface of the guide member is brought into sliding contact with the cylindrical net retracting portion of the above-mentioned upper and lower rollers. Width expansion guide drawer for synthetic resin cylindrical net.