JPS591660B2 - Tape insertion part of automatic tape insertion device for green veneer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic tape insertion device for beef veneer tape that inserts rewetting gummed tape (hereinafter referred to as tape) into the side of the beef veneer when it is wound up by a reeling machine. This is related to the earlier application ``Automatic insertion device for rewetting gummed tape for side reinforcement of soil veneers for plywood'' and ``Unexamined Japanese Patent Publication No. 1983-
2101 Publication (Patent No. 1104335)" (excluding the original fabric support part), a beef veneer winding part of a reeling machine that transports or assists in transporting the tape fed out from the tape mounting part. The present invention relates to a device that inserts the tape into the winding section or cuts the tape being fed out as necessary, feeds out the cut tape again, and inserts it into the beef veneer winding section.

What is required for this device is that the tape does not fly out at the entrance or halfway through the device, that the tape transport does not stop due to the tip of the tape getting caught on the way, and that the tape does not stop at the entrance, halfway or at the exit. The absolute conditions are that the tape does not turn over between the insertion point and the insertion point, and that the tape is accurately and reliably inserted into the cow veneer winding section of the reeling machine.

The present invention has been made to solve the above problems, and provides a long tape transport body that can be carried over the tape path from the tape feeding section of the tape mounting section 18 to the veneer winding section of the ring machine. However, the conveyance body is formed of an upper and lower conveyance body with a narrow conveyance space, and a tape cutter is connected to the terminal end of the conveyance body, and a tape cutter is provided for feeding out the tape after cutting the tape (by tape cutting). A part of the mechanism of the transport body is reused. The structure of the present invention will be described below based on its embodiments.

The main components of this structure are a tape transport auxiliary conveyor, a feeding section, and a tape cutter. As shown in FIGS. 1 and 2, the tape conveyance auxiliary conveyor is composed of side frames 1, 1', belt conveyors 2, 2', etc.

The gap between the opposing belts of the belt conveyors 2 and 2' is set to an appropriate value, and the conveyance capacity is set to a level that merely assists the conveyance of the tape (for example, from the tape loading section 187) to the feeding roll 13 of the tape feeding section and the nip roll 14. The structure is such that it does not have the ability to forcibly convey the tape by itself (to the extent that the tape end that has been fed out will not get caught midway and conveyance is stopped). As shown in Fig. 1, it is installed so that it is connected directly to the feed roll 13 of the tape feed section of the tape loading section 18 directly behind the nip roll 14, and the end of the tape feed section immediately contacts the conveyor belt, which is a movable part. This structure prevents the tape from coming out from the joints. Also, the drive shaft of the belt conveyor is 3' and 3', respectively.
The transmission of the heat is taken from the feed roll 13 through one-way clutches. As shown in FIG. 2, the feeding section has a structure that is rotatable around a fulcrum 19, and the tip of the link 19 is attached to the driven shaft 41 of the upper belt conveyor 21, and is operated against the force of the spring 51. When the tape cut by the tape cutter 1 is fed out, and when a new tape is fed out from a new original tape, the lower part of the solenoid 5 is operated until the tip of the tape is wound around the green veneer winding section of the reeling machine. The belt conveyor 2 and the driven shafts 4, 4' of the upper belt conveyor 21 have a structure in which the tape can be held and fed under pressure. The tape cutter 1 is composed of a movable blade 6, a fixed blade 7, a solenoid 8, a spring 8', etc., as shown in FIGS. The husband driven shaft 4 presser roll 4' is attached to the side frame 1 in a freely rotatable state via the
When the veneer cutting and reeling machine finishes winding up the green veneer, the solenoid 8 cuts the tape against the tension of the spring 8'. The gutter-like tape guide is composed of a gutter 9 and an air cylinder 10, etc., and the gutter 9 is slidably attached to the side frame 1, V. Tape insertion at the beginning of winding raw veneer using a reeling machine As shown in FIG. 1, it is conceivable to construct the tape so that it can be extended to the nip between the take-up 15 and the winding roll 15', thereby preventing the tape from turning over and ensuring reliable insertion.

As shown in FIG. 1, the phototube device consists of two reflectors installed near the green veneer winding section on the machine frame of this insertion device, a reflective phototube 11, and a reflector plate 12 installed on the machine frame of the conveyor 17. It consists of a left-right swing motor 121 for changing the position of the tape insertion part, which detects the meandering of the edge of the raw veneer 16 being wound up on the winder 15, and thereby tracks the tape insertion position so that the edge of the raw veneer 16 is always adjusted. The tape can be pasted immediately after it is inserted into a predetermined position.

At this time, if the tracking accuracy is increased, signals may be output from two phototubes at the same time, and in order to eliminate interference with the control system due to this, a priority circuit is provided in the control circuit to give priority to one of the signals. Because of the above structure, when using
When the end of the green veneer 16 is inserted between the two and the winding roll 15 is set in a predetermined position, the gutter 9 is extended to the nip between the winding roll 15 and the winding roll 151 by the operation of the cylinder 10, and at the same time The belt conveyors 2, 2' immediately begin to be driven in the direction of the arrow by the operation of the feeding motor of the tape loading section 18. Next, when the reeling machine starts winding up the green veneer, the driven shafts 4 and 47 of the upper and lower conveyors are activated by the solenoid 5 to nip the tip of the tape, which is stopped just in front of the tape cutter, and the tape stops being fed out. At first, the tape passes through the trough-like tape guide and reaches the nip between the take-up 15 and the winding roll 15/, and begins to be inserted. Incidentally, since the phototube circuit starts operating as soon as the tape is inserted, the tape is inserted into the predetermined position and the edge is then followed. Also, belt conveyor 2, 2
1 is initially set at appropriate intervals over its entire length, so even if 1 is driven, there is no forced conveyance capability, and the driven shaft 4,
Forced conveyance capability is generated only when 4' is nipped. When the insertion of the leading end of the tape into the raw veneer winding section is completed, the gutter 9 gradually retreats as the winding 15 thickens, and the nip of the presser roll 4' relative to the belt conveyor 2 is also released. Next, when replacing a new tape with an old one, the end of the new tape is fed out by the operation of the nip roll 14 in the tape feeding section of the tape loading section 18, but the tape end that comes in from the tape feeding section is already driven. The raw veneer is inserted between the belt conveyors 2 and 21 without coming into contact with the belt conveyor 2 that is in the state of being in the state, and is assisted in conveyance without jumping out from the connecting part, and is passed through the gutter-shaped tape guide and inserted into the raw veneer winding part.

At this time, the presser roll 4' of the feeding section is also operated at the same time. There is a problem in harmonizing the green veneer winding speed and the tape feeding speed when inserting the green veneer into the green veneer winding section, but in order to prevent the tape from breaking due to excessive tension during high-speed reeling operation, it is necessary to It is also necessary to set the speed to an appropriate value, but in this structure, the conduction of the tape feed roll and the auxiliary conveyor is done through a one-way clutch, and the tape "taluminum" during low-speed operation is In order to prevent this, the nips of each feeding mechanism for feeding out the tape are removed at the same time as the tape is inserted into the winding section. Next, when the raw veneer winding is finished or the raw veneer is cut, the detector detects this, activates the tape cutter, and cuts the raw veneer with the tip of the device.

As described above, the present device according to the present invention is capable of handling the “knob” of the tape in the middle of feeding, which is the most required part of the tape insertion device.
This completely eliminates the possibility of tape popping out, and also enables reliable insertion of the tape into the raw veneer edge, fully satisfying the essential conditions for an automatic machine.

[Brief explanation of the drawing]

The drawings show an example of carrying out the present invention, and FIG. 1 shows the entire structure, FIG. 2 shows the tip thereof, and FIG. 3 shows the outline structure of the tape cutter. In the figure, 1 and 1' are the side frames, 2 is the lower belt conveyor,
2' is the upper belt conveyor, 3 and 31 are the drive shafts, 4 is the driven shaft of the lower belt conveyor, 4' is the driven shaft of the lower belt conveyor, 5 is the solenoid, 51 is the spring, 6 is the movable blade, and 61 is the fulcrum. , 7 is fixed blade, 8 is solenoid＼ 8
/ is a spring, 9 is a gutter, 10 is an air cylinder, 11
is a photocell, 12 is a reflector, 12' is a left-right swing motor,
13 is a feed roll, 14 is a nip roll, 15 is a winder, 15' is a winding roll, 16 is a green veneer, 17 is a conveyor, 18 is a tape mounting section, 19 is a linter, and 19' is a fulcrum.

Claims (1)

[Claims] 1. Forcibly driven tape conveyance auxiliary conveyors arranged vertically and connected to the tape feeding section of the tape loading section;
The main component is a tape cutter connected to the tip of the upper and lower conveyor, and the feeder has a structure that allows one of the driven shafts at the tip of the upper and lower conveyors to be pressed against the other. A tape insertion section of an automatic raw tape insertion device.