JPH0725283Y2 - Driver guide device for sealed binding machine - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a hermetically binding machine for packing a bag body such as a so-called poly bag and then sealing the mouth with staples.
The present invention relates to a driver guide device for guiding a driver who bends the leg portion of the staple.

(Prior art and its problems) In a hermetically binding machine that uses aluminum staples to hermetically bind the mouth of a plastic bag or the like in which the contents are stored together with water, the supply is performed from the supply unit. A guide groove is provided for supporting both legs of the staple and guiding the staple to a bundling portion provided at one end of the guide groove, and a guide groove for slidingly guiding a driver for driving the staple is provided, and the guide groove is also provided. An opening for binding is formed near one end of the groove so that the mouth of the plastic bag or the like can be inserted and discharged. A clincher groove is formed at the end of the binding portion.

The mouth portion of the bag body is inserted into the opening portion in advance, and the staple fed to the guide groove is guided to the binding portion by driving the driver, and is further driven into the clincher groove of the binding portion to staple the leg. The part is bent and the above plastic bag is bound.

By the way, in order to reliably guide the staples from the supply unit to the binding unit, it is necessary to close the binding opening. Therefore, Japanese Patent Publication No. Sho 49-42040 discloses a technique in which a rotary driver guide is provided that interlocks with a driver member that presses the staples to fill the guide groove formed by the opening.

In this rotary driver, a large force is applied to the side of the driver guide when binding the staples, and the driver guide is pushed back, which may cause a defective clinch. In the above-mentioned known technology, in order to solve this problem,
A pin projecting from the clincher groove side toward the concave portion of the rotary driver guide by a spring force is provided, and the rotary driver guide is fixed to the closed position by fitting the pin into the concave portion.

However, since this pin is configured to project by the spring force, when dust or the like adheres to the sliding portion of the pin, the movement of the pin becomes slow and the driver guide may not be fixed.

In addition, in place of the rotary driver guide, a slide driver guide that slides along the driver's operating direction when the driver is operated is formed.
No. 6 is disclosed.

In this type of driver guide, the driver guide is slid together with the driver and the staples while the staples are moved to the bundling portion according to the operation of the driver. The formed protrusion is fitted into the recess formed on the clincher groove member side to prevent the protrusion from escaping in the lateral direction of the guide during clinching.

Further, in this known technique, there is provided a poly bag guide (rotary member) which operates before the sliding operation of the driver guide and focuses the poly bag arranged on the upper surface of the clincher groove inside the staple guide. The plastic bag is designed so as not to be damaged by the operation of the driver guide.

Therefore, according to the above-mentioned technique, two members, that is, a sliding driver guide and a rotating plastic bag guide must be provided, and there is a problem that a complicated configuration is required to set these operation sequences.

(Object of the Invention) It is an object of the present invention to solve the problems of the above-mentioned respective prior arts, and to provide a sealing and binding machine capable of sealing and binding a plastic bag containing a content with moisture with a simple structure in an inflated state. For that purpose, more specifically, the operation of a movable driver guide that guides the sliding of the staples focuses the plastic bag so as to enter between the staple legs, and
An object of the present invention is to provide a driver guide device that surely prevents lateral escape of the staple guide during bundling, thereby ensuring reliable sealed bundling.

(Means for Solving the Problems) In order to achieve the above object, a driver guide device for a hermetically bound machine according to the present invention includes a driver that is reciprocally driven by a drive mechanism, and a guide that slides and guides the driver and the staple. A driver guide having a groove, an opening for inserting and discharging a material to be bound formed in the vicinity of the binding portion at one end of the guide groove and lacking one side thereof, and the driver arranged in the binding portion. A clincher member having a clincher groove for cooperating and shaping the staples together, and the driver guide includes a guide groove for filling the opening and guiding the staple and the driver. Is provided with a movable driver guide that is rotatably supported between a closed position that fills the opening and an open position that opens. The tip of the sequence rod that interlocks with the operation of the lever is engaged with the cam groove formed in the movable driver guide, and is linked to the operation of the sequence rod to move the movable driver guide from the open position to the closed position at the beginning of the operation stroke of the driver. While rotating to, the movable driver guide,
A set pin is arranged so that the tip of the set pin can be retracted toward the recessed member formed in the clincher member when the set pin is rotated to the closed position, and the base end of the set pin is linked with the sequence rod, and the movable driver guide is provided. The set pin is fitted into the concave portion after being rotated to the closed position.

(Operation of the Invention) In the hermetically bound machine having the above-mentioned configuration, for example, when the mouth of the plastic bag or the like containing the contents together with water is inflated and the mouth is to be sealed, the mouth of the hermetically bound machine is narrowed down. Insert in the department. Next, when the driver is driven by the drive mechanism after supplying the staples into the guide groove, the sequence rod is also driven in conjunction with this, and the tip of the sequence rod engages with the cam groove of the movable driver guide. The movable driver guide also rotates in association with the operation of the sequence rod and finally closes the opening. Similarly, the set pin is also linked to the operation of the sequence rod, and the tip of the set pin projects from the movable driver guide and fits into the recess formed in the clincher member, and the opening is reliably closed. The driver slides along the guide groove while pushing the staple supplied to the guide groove, and when the staple reaches the opening, the movable driver guide has already filled in the missing portion of the guide groove. And the driver is smoothly guided in the guide groove of the movable driver guide in the opening, and the driver presses the staples into the clincher groove of the binding part so as to surround the staple bag from the three sides with respect to the mouth part of the plastic bag, Is folded in cooperation with the clincher groove to hermetically bind the mouth of the plastic bag.

(Example) Hereinafter, the present invention will be described with reference to the drawings.

1 and 2 are a plan view and a side view, respectively, of a hermetic binding machine, which includes a driver 2 reciprocally driven by a drive mechanism 1 using an air cylinder.
And a driver guide 5 having a guide groove 4 for slidingly guiding the driver 2 and the staple 3, and an opening 7 formed in the vicinity of the binding portion 6 at one end of the guide groove 4 by lacking one side thereof. A clincher member 9 having a clincher groove 8 formed in the binding portion 6 for binding and forming the staple 3 in cooperation with the driver 2, and a staple supply portion 10 for feeding the staple 3 to the guide groove 4. I have it.

The opening 7 is for inserting and ejecting the object to be bound 11, but since the staple 3 smoothly passes through the opening 7, the driver guide 5 is provided with a movable driver guide 12. There is. The movable driver guide 12 is filled with the above-mentioned opening 7, and the staple 3 and the driver 2
A guide groove 4a that guides the guide groove 4a is formed, and a support shaft 13 provided in the driver guide 5 closes the guide groove 4 at the closed position where the guide groove 4 fills the opening portion 7 and the opening portion 7 is opened. It is rotatably supported between an open position where 11 can be inserted and ejected.

Further, the movable driver guide 12 is configured to rotate in association with the operation of the sequence rod 14 interlocking with the driver 2. That is, the engagement member 15 is fixed to the base of the driver 2, and the engagement recess 17 of the sequence plate 16 is engaged with the engagement member 15. The sequence plate 16 is attached to the driver guide 5 so as to be capable of reciprocatingly sliding on a guide member 18 formed in parallel with the driving direction of the driver 2, and its base end side is attached to one end of the sequence rod 14 by a support shaft 19. It is rotatably attached. An engagement protrusion 20 is formed on the other end of the sequence rod 14,
As shown in FIG. 3, the engaging projection 20 is a movable driver guide.
It engages with a cam groove 21 formed in 12. A bent portion 22 is formed at the end of the cam groove 21 on the spindle 13 side. In addition,
When the sequence plate 16 is disengaged from the tip of the guide member 18 during the forward movement, it loses its support and rotates about the support shaft 19, and its engaging recess 17 and the engaging member 15 of the sequence rod 14 are engaged.
Are disengaged from each other, and are engaged again when returning.

The movable driver guide 12 is set to rotate from the open position of the opening 7 to the closed position at the beginning of the operation stroke of the driver 2 in association with the operation of the sequence rod 14.

Further, a sliding groove 23 is formed on the movable driver guide 12 in the extending direction from the groove edge of the cam groove 21, and a set pin 24 is slidable on the sliding groove 23 and a tip portion thereof is slidable. It is housed so that it can appear and disappear from the end of the moving groove 23. Set pin 24
A set pin bracket 26 having a square ring-shaped fitting hole 25 is attached to the base end portion of the. Then, in the ring-shaped fitting hole 25, the cam groove 21 of the movable driver guide 12 is formed.
The engagement projection 20 at the tip of the sequence rod 14 engaged with is loosely fitted.

Next, the clincher member 9 provided in the binding portion 6 is formed with a clincher groove 8 for bending the leg portion of the staple 3 pushed by the driver 2 along the guide grooves 4 and 4a. A recess 27 having a size that allows the set pin 24 to be fitted therein so as to face the end of the sliding groove 23 when the movable driver guide 12 is rotated to the closed position of the opening 7.
Are formed.

In the hermetically bound machine having the above structure, for example, when the mouth 11a of the object 11 to be bound, such as a plastic bag containing the contents together with water, is inflated, the mouth 11a is closed as shown in FIG. Is narrowed down and inserted into the opening 7 of the hermetically bound machine. Next, after the staple 3 is supplied from the staple supply unit 10 into the guide groove 4, the driver 2 is driven by the drive mechanism 1.
When driven, the sequence plate 16 moves forward along the guide member 18, so that the sequence rod 14 is also driven, and the engaging projection 20 at the tip moves along the sliding groove 23 of the movable driver guide 12, and The movable driver guide 12 also rotates in association with each other to finally close the opening 7 (see FIG. 4). Similarly, the sequence rod 14 is inserted into the fitting hole 25 of the set pin 24.
Since the engaging projection 20 at the tip is loosely fitted, the set pin 24
Also moves along the sliding groove 23 in association with the operation of the sequence rod 14, and the movable driver guide 12 is fitted into the recess 27 of the clincher member 9 after being rotated to the closed position of the opening 7.
The opening 7 is securely closed (see FIG. 5). At this time, the sequence plate 16 disengages from the tip of the guide member 18 and rotates about the support shaft 19, and the engagement recess 17 and the engagement member 15 of the sequence rod 14 are disengaged. Can't move any more. On the other hand, the driver 2 slides along the guide groove 4 while pressing the staple 3 supplied to the guide groove 4, and when the staple 3 reaches the opening 7, the movable driver guide 12 has already moved the guide groove 4 to the guide groove 4. Since the lacking portion of the staple 3 and the driver 2 are filled in, the movable driver guide 12 in the opening 7
Smoothly guided in the guide groove 4 of the driver 2, the driver 2 presses the staple 3 into the clincher groove 8 of the binding portion 6 so as to surround the staple 3 in the opening 7 from the mouth 11a of the plastic bag 11 from three sides, Is folded at the clincher groove 8 to hermetically bind the mouth of the plastic bag.

After the binding is completed, the driver 2 is retracted, so that the engaging member 15 is engaged with the engaging recess of the sequence plate 16 in the middle thereof.
17 and the sequence rod 14 moves backward together with the sequence plate 16.
Is pulled back and pulled out from the concave portion of the clincher member 9 to be recessed in the movable driver guide 12, and when the engaging projection 20 of the sequence rod 14 passes the curved portion 22 of the cam groove 21, the movable driver guide 12 moves in the opposite direction. And the opening 7 is opened. Then, the sealed plastic bag is discharged from the binding unit 6, and the sealed binding work is completed.

(Effects of the Invention) As described above, according to the present invention, since the movable driver guide and the set pin can be operated in conjunction with the operation of the sequence rod driven by the driver, the mechanism is simplified,
The operation is also reliable.

In addition, since the set pin is provided in the movable driver guide, it is not necessary to arrange the structure for operating linkage on the clincher groove side as in the conventional case, and therefore, the volume of the clincher groove portion can be reduced and workability is improved. A binding machine is obtained.

Furthermore, since the set pin does not project due to the spring force but is fitted into the recess of the clincher member in conjunction with the sequence rod, the movable driver guide with the opening of the driver guide closed can be reliably fixed. Therefore, it is possible to effectively prevent the phenomenon in which the movable driver guide laterally escapes at the time of bundling and the staples cannot be properly guided, so that the leg portion bulges in the lateral direction and a bad binding occurs.

[Brief description of drawings]

1 and 2 are a plan view and a side view, respectively, showing in cross section a part of a hermetic binding machine equipped with a driver guide device according to the present invention, and FIG. 3 is a movable driver guide, a set pin, and a sequence rod. And FIG. 4 and FIG. 5 are explanatory views of the operating mode of the hermetically bound machine described above. Reference numeral 2 ... driver, 3 ... staple, 4 ... guide groove, 5
... driver guide, 6 ... binding portion, 7 ... opening, 8 ... clincher groove, 9 ... clincher member, 11 ... binding portion, 12 ... driver guide, 14 ... sequence rod, 24 ... set pin

Claims (1)

[Scope of utility model registration request] 1. A driver which is reciprocally driven by a drive mechanism, a driver guide having a guide groove for slidingly guiding the driver and staples, and one side of the guide groove in the vicinity of a binding portion which is lacking. And a clincher member having a clincher groove formed in the binding portion for binding and forming staples in cooperation with the driver, and the driver guide. Is provided with a guide groove that fills the opening and guides the staple and the driver, and the guide groove is rotatably supported between a closed position that fills the opening and an open position that opens. A movable driver guide is provided, and the tip of the sequence rod that interlocks with the operation of the driver is engaged with the cam groove formed in the movable driver guide. The movable driver guide is rotated from the open position to the closed position at the beginning of the operation stroke of the driver in association with the operation of the sequence rod. A set pin that can project and retract toward the inside of the recess formed in the clincher member is arranged, and the base end of the set pin is linked with the sequence rod,
A driver guide device for a hermetically bound machine, wherein a set pin is fitted into the recess after the movable driver guide is rotated to a closed position.