JPS5921301B2 - Spout welding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spout welding device for welding a spout to the opening of a bag body, and in particular, the present invention relates to a spout welding device for welding a spout to the opening of a bag body, and in particular, by incorporating a spout automatic feeding mechanism and a single automatic bag body feeding mechanism, the spout The present invention relates to a device that can fully automatically weld a bag to a bag body.

Generally, when welding the spout to the bag, it is extremely difficult to ensure accurate welding position and strong welding.
In particular, when attaching a spout to a bag made of thermoplastic synthetic resin such as polyethylene, polypropylene, polyester, or polyvinyl chloride, it is difficult to secure a more accurate welding position due to the flexibility of the bag.

The present invention provides a device for accurately and firmly welding a synthetic resin pouring spout to the downward opening of a thermoplastic synthetic resin bag, and in which the welding surface of the spout and the welded portion of the bag are connected. There are no unwelded parts or loose parts, and there is no gap between them, so there is no leakage of the liquid contained therein.

More specifically, there is an intermittent running mechanism in which a large number of spout supports and bag body holding frame supports are connected in an endless manner, a feeding mechanism that fits the spout into the spout support, and an upper run mechanism for the intermittent traveling mechanism. A suction mechanism that is disposed near the starting end and opens both sides of the downward opening of the bag to face each other, and a spout attachment that is brought into the opened downward opening and is fitted and held in the spout support. A heat welding mechanism for thermally welding the attachment part and both sides of the opening and closing the opening with the spout interposed therebetween, and a rubber pressure welding mechanism for firmly fixing the spout. The present invention provides a spout welding device.

An actual example of the device of the present invention will be explained with reference to the drawings.

Referring to FIG. 1, this device includes a main body 1, an automatic spout feeding mechanism 2 that aligns a large number of spouts and sequentially feeds them one by one, and separates bags one by one from a group of many bags. The main body 1 consists of an automatic bag body supply mechanism 3 that feeds the bag body, and an automatic take-out mechanism 4 that automatically picks up and takes out the bag body after the spout has been attached.
has an intermittent traveling mechanism 7 in which a spout support 5 and a bag body holding frame support 6 are connected, and a spout automatic feeding mechanism 2 is disposed close to the starting end of the intermittent traveling mechanism I. The automatic bag supply mechanism 3 is arranged close to the upward running start end of the intermittent running mechanism 7, and the automatic bag take-out mechanism 4 is arranged close to the terminal end of the intermittent running mechanism γ.

The intermittent traveling mechanism 7 includes a spout support 5 and a bag holding frame support 6, each of which is connected at both ends to an intermittent traveling endless check 78 which is connected to a prime mover driven by a Maltese cross mechanism and a driven vehicle. Both ends are tied together, and the spout support 5 is connected to the first
1, it has an elevating body 10 in which a fitting recess 9 is formed.

As shown in FIG. 8, the bag holding frame support 6 is open vertically and forms a rectangular bag insertion hole 11 along the direction of movement of the intermittent traveling mechanism 7, and is located above the lower edge of the side wall 12.12. Notches 13, 13 are cut out in the bag body A, and an adjustable abutment plate 14 is provided at the rear end of the bag body insertion hole 11 in the advancing direction to abut the side edge opening of the bag body A to position the bag body A from front to back. It is.

In this case, the pouring donkey made of thermoplastic synthetic resin has a beak end 2, rib holes provided inside in the width direction, and both ends as shown in FIGS. 4 to 6. It consists of a hem-like attachment part with a sharp point and a substantially boat-shaped cross-sectional profile, and a beak groove at the second end of the beak, from which the stored material is poured out.

The automatic spout feeding mechanism 2 attached to the main body 1 is arranged in a single column through the outlet 17 connected to the outlet 16 of the tray-shaped vibrating alignment machine 15 as shown in FIGS. 1 and 7. A slide 18 is provided facing the end of the outlet path 17 of the automatic feeding mechanism 2 that automatically feeds a large number of upwardly directed pouring donkeys, H... (shown in FIG. 7) one by one, A spout pedestal 19a is provided in contact with this slide 18, and this spout pedestal 19a is movable up and down by an air cylinder 19. A spout cradle 19 is disposed directly below the stop position, and the spout cradle 19 on which the spout donkey with the beak end facing upward is placed is raised, and the spout donkey is placed in the fitting recess 9 of the spout support 5. A dispensing mechanism 20 for delivery is formed, and the dispensing donkey that is received is inserted into the center hole of the fitting recess 9 and is turned upside down toward the hem-like attachment portion. (Figure 7 and 1
(See Figure 1).

The spout support 5 moves from the starting end side lower running surface to the upper running surface by the intermittent running of the chain 8, and eventually the bag body holding frame support 6
It is formed so that it moves downward.

The bag holding frame support 6 is temporarily stopped at a position corresponding to the automatic bag supply mechanism 3 on the upper running surface of the intermittent traveling mechanism 7.

As shown in Figure 9, the automatic bag supply mechanism 3 is configured to vacuum suction, separate and take out arms from the bag group standing standby device 21 for the bags A and A, the lower ends of which are closed by heat welding and the upper parts of which are not bonded. 22, take out one bag at a time, invert it, and hit the upper part of the bag against the guide member 23 disposed above the intermittent traveling mechanism 7 with the heat-welded part at the lower end facing the upper end, and then release the vacuum. Compressed air is instantaneously blown out from the compressed air outlet 24 to cause the bag body I to fall.

When the bag body I collides with the guide member 23 and falls, the bag body holding frame support 6 is located directly below the guide member 23, and the bag body I is located below the bag body holding frame support 6. A platform 25 is provided on which the lower edge of the bag is placed to regulate the vertical position of the bag 1.
(see FIG. 14a), the bag body passage 2 is connected to the guide member 23.
Two guide wall plates 27 and 27 forming a 6 are arranged side by side.

Further, with reference to FIG. 8, the side wall 12 of the bag holding frame support 6
A bag holding piece 31 is fixed to the end of the horizontal part 30 of the support rod 29 which is vertically installed on the support part 281 protruding from the upper part of the bag body 281, and the bag holding piece 31 is fixed to the bottom of the bag body inserted into the bag body holding frame support 6. After the edge collides with the platform 25 to determine the vertical position, the next intermittent run of the chain 8 causes the end of the support portion 28 of the bag holding frame support 6 to engage with the operating rail cam 45 (see Figure 2). At this time, the bag holding pieces 31, 31 are formed so as to come close to each other in a timely manner to suppress and hold the bag.

Note that before the bag body holding pieces 31 and 31 press down the bag body A, the rear edge of the bag body I comes into contact with the abutment plate 14 due to the intermittent running of the bag body holding frame support 6, and the front and rear edges of the bag body A are The position is determined.

Next, a suction mechanism 32 is disposed in the main body 1 to open both sides of the downward opening of the bag at a predetermined distance in the forward direction from the position where the bag is inserted into the bag holding frame support 6.

That is, as shown in FIG.
The sliding guide portion 34t is provided with a holding rod 35 that can move forward and backward, and a vacuum suction hole 3 is provided in a branch piece 36 fixed to the end of the holding rod 35.
A tube body 38 having a diameter of 7 is fixed, and an air cylinder 39 is operated in a timed manner, and the holding rods 35, 35, which are not rotatable, are made movable forward and backward by a keyway, and the holding rods 35 and 35 are moved forward. It is so formed that it is brought into contact with both sides of the downward opening of the bag body A and retracted while applying vacuum suction to open the both sides.

In this way, with the bag body A held down by the holding pieces 31 and 31, both sides of the downward gap 10 are opened, and then the spout is opened via the action surface of the horizontal cam 58 (see Fig. 11). The support 5 is raised to insert the attachment part of the pouring donkey into the downward opening of the bag body I, and then the vacuum suction by the tubes 38 and 38 is released.

Inside the downward opening of the bag (at a predetermined distance in the forward direction from the point where the pouring donkey is inserted 40 to form a thermal welding mechanism 41 (see FIGS. 8 and 14).

This thermal welding mechanism 41 has heating plates 40 and 40 arranged near the notches 13 and 13 in the bag holding frame support 6, respectively, and these heating plates 40 and 40 are fixed to holding plates 42 and 42, respectively, and are The plate 42 has a trochanter 44 which is pivotally connected to a branch 43 provided on the back side of the plate 42, and when the trochanter 44 is brought into contact with the operating surface of a hot plate operating cam (not shown), the hot plate 40.40 is moved into a bag body. The both sides of the downward opening of A are brought close to each other, and the attachment part of the pouring donkey is sandwiched between both sides of the bag A, and the downward opening is welded and closed using hot discs 40, 40.

Next, when the thermal welding mechanism 411 moves forward from the point where the spouting donkey has been attached to the bag body A, the heating plate 40° 40 retreats and the spout support 5 descends (see Figure 11).
.

The heat of 7 J [] in the heating plates 40, 40 is generated by the electric power t introduced through the brush that is in sliding contact with the trolley wire of the energizing mechanism 39 installed in the main body 1 (see FIG. 13).

The advancing and retreating of the heating plates 40, 40 and the advancing and retreating of the hold-down pieces 31 and 31 are performed in a timed manner via the operating surface of a rail cam installed in the main body 1, and is designated by the reference numeral 45 in FIG.
is a rail cam for operating the holding piece 31.

Furthermore, a rubber pressure contact mechanism 46 is provided on the main body 1 at a predetermined distance in the forward direction so as to further strengthen the fixation by heat welding between the attachment part of the pouring donkey and both sides of the downward opening of the bag body. .

As shown in FIG. 12, this rubber plate pressure contact mechanism 46 is arranged so as to face the passage of the holding frame support 6 and to correspond to both sides of the notches 13, A fixing member 49 (
It has a fixed rubber plate 50, and these rubber plates 50.50
is movable forward and backward, and is strongly compressed by rubber plates 50, 50 that press the sides of the downward opening of the heat-welded bag body I and the attachment part of the spouting donkey from the outside of the sides. Push back to strengthen the attachment.

When the rubber plate pressure welding mechanism 46 is in operation, the hot platens 40, 40 of the heat welding mechanism 41 are moved away, and the rubber plates 50, 50 are removed.
There is no problem in pressure welding.

Next, an automatic take-out mechanism 4 is provided near the upper short surface on the terminal side of the intermittent traveling mechanism 7.

This automatic take-out mechanism 4 is connected to a column 51 as shown in FIG.
The upper end is attached to the protruding piece 52 protruding from the soil part, and a rod 55 is provided which fits into the air cylinder 54 whose intermediate part is supported by the supporting piece 53, and the gripping piece 56.56 (see Fig. 14). The air cylinder 54 is actuated to allow the rod 55 to move up and down (just before the lowest point, the gripping pieces 56 and 56 are opened to open the passage 2 of the bag body A).
Both sides of the upper part of the bag body A located at the 6th end are held by the gripping pieces 56, 5.
6ζ, the bag is gripped and picked up, and then the projecting piece 52 and the support piece 53 are rotated, and then the gripping pieces 56 and 56 are opened and the bag is dropped into the bag dropping area.

The upward movement of the spout support 5 is performed by a horizontal cam 5 as shown in Figure 11.
The heating plates 40 and 40 are moved forward and backward at the same time by the opposing operating cam surfaces of plate cams (not shown) arranged in parallel on the main body 1 with their cam surfaces facing each other.
, 40 after welding the bag body I and the pouring donkey, the bag body I is moved backward to release the bag body I and descend.

Thereafter, a pressure welding process using the rubber plates 50, 50 begins.

Since the device of the present invention is configured as described above, the intermittent traveling mechanism γ is rotated to cause the spout support 5 and the bag body holding frame support 6 to travel intermittently, and the lower running surface of the starting end side of the intermittent traveling mechanism 7 is rotated. The pouring donkey fed from the spout automatic feeding mechanism 2 and placed on the pedestal 19 is delivered to the downward spout support 5 which is temporarily stopped at the position of the spout support 5, and then the spout donkey placed on the pedestal 19 is transferred to the spout support 5 which is pointing downward and is temporarily stopped. A single bag sent from the automatic bag feeder groove 3 is loaded into the bag holding frame support 6, and the vertical position is regulated by the platform 25, and the front and back position is adjusted by the adjusting plate 14. It is regulated and placed in the fixed position (see Fig. 11), and then the tube body is held down from both sides by the pieces 31, 31) (see Fig. 14), and then the vacuum suction mechanism is activated to remove the tube body. Both sides of the downward opening of the bag body I are opened through the suction holes 37 of 38 (see FIG. 14C), and the spouting donkey fitted and held in the spout support 5 is raised to open the opening. Bring the opening to the attachment part of the pouring donkey, release the vacuum, and join both sides of the opening to the attachment part of the pouring donkey located in the downward opening [ ] of the bag body A. (See Fig. 14 d), move the heating discs 40, 40 close to each other and sandwich the attachment part of the pouring donkey from the outside of both sides of the opening to thermally weld and close the opening (see Fig. 14 C). Remove the plates 40, 40 and lower the spout support 5 (see Fig. 14C), and then press the rubber plates 50, 50.
to firmly fix the heat welded parts, including the welded parts between the pouring donkey and both sides and sides of the opening of the bag body A (Fig. 14g).
), then remove the rubber plate 50.50 (see diagram 14), and use the upper surface of the terminal end side of the intermittent traveling mechanism 7 to grasp the upper part of the bag body A with the pouring donkey attached to the downward opening. 56.56, pick it up (see Fig. 14C), rotate it, release the grip of the gripping pieces 56.56 above a predetermined location, and let it fall.

In this way, the spout is automatically and reliably attached to the bag body A, and in particular, it is firmly secured by the rubber plate that presses both sides of the downward opening and the attachment part of the spout from the outside of both sides. Since the spout can be fixed to the bag body, the attachment state of the pouring spout is extremely strong.If you leave only the downward opening [ ] of the bag body in an unobstructed state in advance, the spout can be attached to the bag body A by this device. This immediately results in a bag with a spout.

The present invention has significant effects such as being able to fully automatically attach the bag and the spout in manufacturing a bag with a spout, making the welded part extremely strong, and eliminating any leakage of liquid. It is.

[Brief explanation of the drawing]

Fig. 1 is a front view of the device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a right end view of Fig. 1, and Fig. 4 is a slope view of the spout used in an embodiment of the device of the present invention. , FIG. 5 is a bottom view of the spout, FIG. 6 is an end view taken from the line Vl-Vl in FIG. An explanatory view showing the state, FIG. 8 is a perspective view of the bag holding frame support, FIG. 9 is a perspective view of the main part of the bag automatic supply mechanism, FIG. 10 is a perspective view of the vacuum suction mechanism, and FIG. 11 is a perspective view of the bag body holding frame support. Figure 12 is a sectional view of the main parts of the spout support, and Figure 12 is a slope view of the rubber plate pressure contact mechanism.
The figure is an explanatory view of the heating plate heating mechanism, and FIG. 14 is an explanatory view sequentially showing the process of attaching the spout to the bag body in the apparatus of the present invention. 1...Main body, 2...Automatic spout feeding mechanism, Meter...Automatic bag feeding mechanism, 4...Automatic ejection mechanism, 5... ... Outlet support, 6...
...Bag body holding frame support, 7...Intermittent traveling mechanism, 8...Endless check 7.9...Fitting recess for spout support 5, 19. ...Spout cradle, 20
...Salary organization, 31...Bag holding piece,
32... Suction mechanism, 40... Heat plate, 4
1...Heat welding mechanism, 46...Rubber plate pressure contact mechanism, 50...Rubber plate, A...Bag body, C... Pour spout, to...the hem-like attachment part of the spout, to the spout of the spout.

Claims (1)

[Claims] 1. An intermittent running mechanism in which a large number of spout supports and bag body holding frame supports are connected in an endless manner, a feeding mechanism that fits the spout into the spout support, and an upper run start end of the intermittent travel mechanism. a suction mechanism disposed in the bag body and configured to open both sides of the downward opening of the bag so as to face each other; A heat welding mechanism that heat-welds the attachment portion of the outlet and both sides of the opening and closes the opening; A spout welding device characterized by having rubber plates facing each other so as to be pressed from the outside of both sides and movable back and forth, and a rubber plate pressure contact mechanism for firmly fixing the spout.