JPS6244882Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tube opening device for packaging small products such as electronic components, and more specifically, the present invention relates to a tube opening device for packaging small products such as electronic components. The present invention relates to a device for unsealing a tube at a downward pulling point when the tube is pulled out and packaged.

FIG. 1 is a simplified perspective view for explaining the opening of a conventional tube. tube reel 1
A long tube 2 made of vinyl resin, etc., for enclosing and packaging electronic parts, for example, is wound around the tube 2 with its inner surface in close contact with each other.
A vacuum chuck 3 facing both outer surfaces of the tube 2 is provided for unsealing the tube 2. Both outer surfaces of the tube 2 are vacuum chucks 3 which are sequentially sent downward from the free end (downward in FIG. 1) as shown by arrow 4 and are placed so as to face both outer surfaces of the tube 2. The seal is released by suction and the seal is opened. However, tube 2
Since the opposing inner surfaces of the tube are in close contact with each other, the tube cannot be opened reliably unless a considerably large suction force is applied.

Furthermore, in order to open the tube 2 to a certain opening size, the vacuum chucks 3, 3 must be placed facing each other with an interval corresponding to the opening size, but if this facing interval is wide compared to the suction force, The tube 2 is attracted to one vacuum chuck 3, and the suction force of the other vacuum chuck 3 ceases to act. Therefore, there is a limit to the size of the opposing distance that can be set between the pair of vacuum chucks 3, 3, and there is a problem in that the opening dimension of the tube 2 cannot be made sufficiently large.

On the other hand, for tubes for large packages, a core with a sharp point on the insertion side and a widened rear side is inserted into the tube, and the tube can be opened to the required opening size using this core alone. A device has already been proposed (Japanese Unexamined Patent Publication No. 57-37525). However, since the core of the above device has a complicated structure, it is difficult to apply it to narrow tubes such as tubes for packaging electronic components.
Further, when the tube is pulled out at high speed, there is a risk that the tube may be damaged if the core has a complex shape as described above.

An object of the present invention is to make it possible to reliably unseal and expand the tube to a required opening size while pulling out the tube at high speed without damaging the tube using a member having a simple structure.

In order to achieve the above object, the present invention includes a spherical peeling member that is inserted into the tube from the free end of the tube that is pulled out downward, and a spherical peeling member that is supported from below so that it can move in the width direction of the tube. a pair of rod-shaped support members parallel to each other;
A tube opening device was constructed including a pair of vacuum chucks disposed below each support member and facing each outer surface of the tube.

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 2 is a perspective view of one embodiment of the present invention, FIG. 3 is a partially sectional side view thereof, and FIG. 4 is an enlarged sectional view of the tube 6 taken along the cutting plane line - in FIG. It is a diagram. tube reel 5
A long tube 6 made of synthetic resin for enclosing and packaging electronic components is wound around the tube 6 with its inner surface 11 in close contact.

The tube opening device according to the present invention is inserted into the free end of the tube 6, that is, the end on the side to be opened;
A spherical peeling member 7 for separating and peeling the inner surfaces 11 of the tube in close contact with each other, and a pair for supporting the peeling member 7 to prevent the peeling member 7 from falling downward (downward in FIGS. 2 and 3). rod-shaped support member 8
including. The distance between the pair of support members 8 is selected to be smaller than the diameter of the peeling member 7. A pair of vacuum chucks 9 are provided below the support member 8 and are placed facing both outer surfaces 12 of the tube 6, respectively. The pair of support members 8 are arranged in parallel with each other along the width direction of the tube 6, and the vacuum chucks 9 below the support members 8 are spaced apart from each other at an opposing interval centered on the parallel interval between the support members 8 and wider than the parallel interval. facing each other.

To unseal the tube 6, first insert the peeling member 7 into the tube 6 from its free end. Next, the tube 6 is passed between the pair of support members 8. Thereafter, the tube 6 is sent downward sequentially from its free end as indicated by the arrow 10. As the tube 6 is successively fed downward, the peeling member 7 within the tube 6 supported by the support member 8 sequentially peels off the tight inner surface 11 of the tube 6.
The pair of support members 8 only prevent the peeling member 7 from falling downward, and other displacements of the peeling member 7 are permitted. Tube 6 below support member 8
Both outer surfaces 12 are suctioned by the vacuum chuck 9 to form the inner surface 1 of the tube 6 as shown in FIG.
1 are separated from each other and the tube 6 is opened.

In the tube opening auxiliary device according to the present invention, before the vacuum chuck 9 sucks both outer surfaces 12, the tube 6 is previously opened by the peeling member 7.
Since the close contact state of the inner surface 11 of the tube 6 is partially released, opening of the tube 6 by the vacuum chuck 9 is reliably achieved.

After the electronic components to be packaged are placed in the unsealed tube 6, both ends of the tube 6 containing the electronic components are sealed by heat welding and then cut.

As described above, according to the present invention, the inner surfaces of the tubes are separated from each other in advance by the peeling member and the close contact is partially released, so there is no need to apply a large vacuum suction force when opening the tube with a vacuum chuck or the like. The opening of the tube can also be achieved reliably.

Moreover, since the peeling member is spherical and can move in the width direction of the tube while being supported by the support member, when the tube is pulled down, the peeling member moves to a part of the tube where the adhesion is weak and moves to that part. Since the tube is pushed open from the peeling member, no undue force is applied to the tube. Therefore, without damaging the tube,
The tube can be opened by pulling it down at high speed.

Furthermore, since the pair of supporting members guides the tube to a substantially central position between the vacuum chucks, the tube is not attracted to one of the vacuum chucks, and the suction force of each vacuum chuck is always evenly applied to each outer surface of the tube. can be made to act.
Therefore, the gap between the vacuum chucks can be set sufficiently wide to allow the tube to be unsealed and expanded to the required unsealing dimensions.

In addition, since the peeling member and the support member have extremely simple shapes, these members can be formed into small diameter dimensions to easily form narrow tubes. It plays the role of supporting and preventing slippage, and the overall configuration is simplified and can be implemented at low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional example, FIGS. 2 to 4 show an embodiment of the present invention, FIG. 2 is a perspective view, FIG. 3 is a partially sectional side view, and FIG. FIG. 3 is an enlarged sectional view of the tube 6 taken along the section line - in FIG. 2; 5...Tube reel, 6...Tube, 7...
...Peeling member, 8... Supporting member, 9... Vacuum chuck, 11... Inner surface, 12... Both outer surfaces.

Claims (1)

[Claims for Utility Model Registration] A device for sequentially unsealing a tube that is wound with its inner surface in close contact with each other and pulled out downward, starting from the free end of the tube. a peeling member, a pair of mutually parallel rod-shaped support members that support the peeling member from below in a state in which the peeling member can move in the width direction of the tube, and are respectively disposed below each support member facing each outer surface of the tube. A tube opening device comprising a pair of vacuum chucks.