JPS638564Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention stores spherical fruits or other stored items in a bag-like object such as a net bag or an airtight synthetic resin bag, and The present invention relates to a starting operation device for a bag binding machine that closes the opening of a bag-like object by clinching a U-shaped binding fitting to the opening of the bag-like object in a state where the opening of the bag-like object is converged.

<Prior Art> Previously, the applicant disclosed a pneumatically driven bag stitching machine in Japanese Patent Application No. 56-66577 (see Japanese Patent Publication No. 61-49173). This bag binding machine consists of a clincher that is held on the front side of the body and bends the U-shaped binding fittings into a closed loop, a blade-like driver that is driven to move forward or backward with respect to the clincher, and a driver that reciprocates. a pneumatic piston-cylinder mechanism to be driven; a trigger valve for starting the pneumatic piston-cylinder mechanism; and a trigger valve for starting the pneumatic piston-cylinder mechanism; and a focusing guide member having a trigger valve pressing part on the end side, and the trigger valve is pushed by inserting the opening of the bag-like object into the bag-like object focusing notch and pivoting the focusing guide member downward. This is what I did.

<Problems to be solved by the invention> In the above-mentioned conventional bag stitching machine, the convergence process at the mouth of the bag-like object and the trigger lever pressing operation are integrally combined, so it is difficult to stuff the contents inside the bag. If the bag is not compact, when trying to correct it, there is no time to correct it and the user accidentally presses the trigger valve, causing the screwdriver to advance and clinch the U-shaped binding fitting to the mouth of the bag. Accidents may occur.

In addition, even if you accidentally push down the focusing guide member without inserting the opening of the bag-like object into the focusing notch, the stem of the trigger valve is pressed and the driver advances, so the U-shaped binding bracket An accident may occur in which the clincher remains in a bent state.

SUMMARY OF THE INVENTION In view of the drawbacks of the prior art described above, an object of the present invention is to provide a starting operation device for a bag stitching machine that allows the stem of a trigger valve to be pressed after confirming the condition of the items stored in a bag-like article.

<Means for Solving the Problems> The present invention includes a driver that is driven forward and backward with respect to a clincher held on the front side of a body and bends a U-shaped binding fitting in a closed loop shape in cooperation with the clincher; A driver advancing and retracting drive unit, a trigger means for starting the driver advancing and retracting drive unit, and a gap for converging the mouth of a bag-like object which is pivoted by a fixed pivot whose mounting position is fixed with respect to the body. The trigger means is pivoted in a state where it is elastically biased in the return direction by a movable pivot attached to the focusing guide member and moved toward the trigger means when the focusing guide member is pressed down. a manual actuating lever which pushes this trigger lever so that it pivots about a movable pivot towards the triggering means, the focusing guide member is depressed and actuated. The trigger means is pressed only when the lever presses the trigger lever.

<Operation> Insert the mouth of the bag into the gap between the converging member and the guide member to converge it, and from this state, when the guide member is pushed down so as to rotate around the fixed pivot, the movable pivot will move the trigger lever. When the guide member is pushed down, the pin of the actuating lever, which is manually rotated around a fixed pivot, moves the lower end of the trigger lever toward the trigger means. The trigger valve stem is moved in the direction of the trigger means and the trigger valve stem is pressed to start the valve.

<Embodiments> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 5. FIG. 1 is a partially cutaway longitudinal sectional view showing the entire bag stitching machine 2 equipped with the starting operation device 1 of the present invention. The bag stitching machine 2 has a body 3 whose side profile is approximately a right triangle, and on the oblique side of the right triangle body 3 there are provided a driver advancement/retraction drive unit 4, a blade-shaped driver 5, a focusing guide member 6, and a clincher 7. and a clincher position adjustment device 8 are arranged in this order.

The driver advancement/retraction drive unit 4 includes a main cylinder 9 into which compressed air is introduced, a double-acting main piston 10 that is slidably housed in the main cylinder 9 and reciprocated by the compressed air, and It has a sub-piston 11 and a push rod 12 that are paired with the main piston 10 to assist in operation. main piston 10
is integrally connected to the driver 5 via a hollow piston rod 10a and a driver holder 10b. The sub-piston 11 has one binding fitting 13
When separating from the binding bracket row of parallel connections,
It operates to push the main piston 10 downward by a certain stroke from the position shown in FIG. The push rod 12 is integrally connected by a bolt 15 to a slide guide 14 that conveys the binding fitting 13 toward the bending groove 7a of the clincher 7 in cooperation with the driver 5. The maximum amount of advance of the main piston 10 is determined by a main piston stopper 16 fitted into the front end of the main cylinder 9.

An advancing compressed air passage 17 and a retreating compressed air passage 18 are connected to the rear end side and the front end side of the main cylinder 9, respectively. A main valve 19 is provided between the advancing compressed air passage 17 and the retreating compressed air passage 18.
9 is operated by a trigger valve 20 as a trigger means (see FIG. 2).

A binding fixture guide 21 is fixed to the body 3 below the slide guide 14 at a constant distance from the slide guide 14, and cooperates with the slide guide 14 to hold the binding fixture 13 so that it does not fall.

The front part of the body 3 (in Fig. 1, the body 3
A clincher holder 22 is integrally connected to the body 3 at the left end portion of the body 3. A clincher moving groove 23 is formed in this clincher holder 22,
The clincher 7 is slidably inserted into this groove 23. The leg portion 13a of the binding fitting 13 is bent in the bending groove 7a of the clincher 7.

The fixed position of the clincher 7 is adjusted by an adjustment block 25 moved by a screw 24a.

The focusing guide member 6 is constructed by integrally joining two focusing guide plates 6a of the same shape on the left and right,
The whole thing is almost bird-shaped. In the part corresponding to the bird-shaped head, a wide upper focusing tongue 24 and a narrow lower focusing tongue 25 are formed with a gap 26 at a constant distance from the upper focusing tongue 24. It is set aside.

The focusing guide member 6 is pivotally supported by a fixed pivot 27 fixed to the body 3 at a portion corresponding to the bird-shaped rear upper part of the focusing guide member 6 .

A trigger lever 29 is pivotally supported by a movable pivot 28 which is fixed to the focusing guide member 6 and whose position is movable with respect to the body 3 at a portion corresponding to the bird-shaped rear lower portion of the focusing guide member 6 .

At a position above the fixed pivot 27, a cutter lever 30 is pivotally supported by a fixed pivot 31 fixed to the body 3. A torsion coil spring 32 is interposed between the fixed pivot 31 and the upper surface side 6c of the focusing guide member 6, with its coil portion 32a mounted on the fixed pivot 27. As a result, the focusing guide member 6 is always elastically biased clockwise in FIG.

On the other hand, the rotation of the focusing guide member 6 is restricted by a stopper (not shown) so that the lower focusing tongue 25 remains at a position above the clincher 7.

One end 30a of the cutter lever 30 is normally stationary in a state where it projects toward the driver 5. In this normal state, the other end 30b of the cutter lever 30 is in contact with the stem 33 of the cutter operating valve 33.
It is stationary in contact with a.

The cutter lever 30 pushes the stem 33a of the cutter operation valve 33 when its one end side 30a is pushed by the driver holder 10b to rotate clockwise in FIG. 3.

An insertion hole 29a is formed in the non-pivotally supported end 29b of the trigger lever 29, and the tip of a rod 35 equipped with a compression coil spring 34 is inserted through the insertion hole 29a. The compression coil spring 34 always elastically biases the trigger lever 29 in the counterclockwise direction in FIG.

The trigger lever 29 is used to press the stem 36 of the trigger valve 20, and normally stands stationary apart from the stem 36.

The left focusing guide plate 6a of the focusing guide member 6
A substantially L-shaped operating lever 38 is pivotally supported on the left side of the body 3 by a fixed pivot 37 fixed to the body 3. The actuating lever 38 is manually operated by an operator, and has a pin 39 fixed to its lower end 38a, which abuts on the trigger lever 29. This pin 39 allows the actuation lever 38 to move the trigger lever 29 to the third position around the movable pivot 28.
Rotate clockwise in the figure.

The tip side 38b of the operating lever 38 is connected to the body 3.
It extends to the front side. The operator inserts the opening of the bag-like object containing the stored items into the gap 26 of the focusing guide member 6 to focus the bag, and then inserts the focusing guide member 6 through the focused opening of the bag-like object. Press down (3rd
3), thereby moving the movable pivot 28 to the left in FIG. 3 and fixing it.

Furthermore, after confirming that the mouth of the bag-like object has been properly focused by the focusing guide member 6, the distal end side 38b of the operating lever 38 is pushed down. This results in
The trigger lever 29 is a movable pivot 28 that is temporarily fixed.
3 in the clockwise direction in FIG. 3, pushing the stem 36 of the trigger valve 20.

The left focusing guide plate 6a of the focusing guide member 6
On the right side (i.e., inside the focusing guide member 6),
A blade-like cutter 41 integrally connected to a cutter piston 40 is arranged so that it can advance toward or retreat from the clincher 7.

Hereinafter, the operation of the starting operation device 1 will be explained.

First, as shown in FIG. 3, the focusing guide member 6
is pushed down and the gap 26 between the upper focusing tongue 24 and the lower focusing tongue 25 reaches a position opposite to the bending groove 7a of the clincher 7, the operating lever 38 is also pushed down. If not, the stem 36 of the trigger valve 20 is not pushed to the left by the trigger lever 29.

Next, as shown in FIG.
is pressed down and rotated clockwise, and the pin 39 rotates the trigger lever 29 clockwise, if the focusing guide member 6 is stationary at its top dead center, the trigger lever 29 will not move. trigger valve 20
stem 36 cannot be pushed to the left.

Finally, as shown in FIG. 5, the opening of a bag-like object (not shown) is inserted into the gap 26 of the focusing guide member 6, and the focusing guide member 6 is pushed down.
6 reaches the position facing the bending groove 7a of the clincher 7, and in this state, the operator confirms that the mouth of the bag-like object is converged in a good condition in relation to the stored items. When the trigger lever 38 is pushed down, the trigger lever 29 is rotated clockwise around the movable pivot 28 which moves to the left and is temporarily fixed in that position, pushing the stem 36 of the trigger valve 20 to the left. .

<Effects of the invention> As described above, according to the invention, the entire bag stitching machine cannot be started unless both the focusing guide member and the manual actuation lever are operated, which results in poor focusing of bag-like objects. Even if you can fix it completely.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway vertical sectional view of the bag stitching machine according to the present invention, Fig. 2 is a pneumatic circuit diagram of the bag stitching machine, and Fig. 3 is a diagram of the present invention when only the focusing guide member is pressed down. 4 is a left side view of the starting operating device, FIG. 4 is a left side view of the starting operating device when only the operating lever is pressed down, and FIG. 5 is a left side view of the starting operating device when both the focusing guide member and the operating lever are pushed down. FIG. 3 is a left side view of the starting operation device. 1... Start operation device, 2... Bag stitching machine, 3...
Body, 4...Driver advancement/retraction drive section, 5...
Driver, 6... Focusing guide member, 7... Clincher, 13... Binding fitting, 20... Trigger valve, 26... Gap, 27... Fixed pivot, 28...
Movable pivot, 29... trigger lever, 34... compression coil spring, 36... stem, 38... operating lever, 39... pin.

Claims (1)

[Scope of utility model registration request] a clincher held on the front side of the body; a driver that is driven forward and backward with respect to the clincher and bends the U-shaped binding fitting into a closed loop shape in cooperation with the clincher; and a driver advancement and retraction drive section;
a trigger means for starting the driver advancement/retraction drive section; a focusing guide member that is pivoted by a fixed pivot fixed at a mounting position with respect to the body and has a gap for focusing the mouth of the bag-like object; a trigger lever for pressing the trigger means, which is pivoted in a state where it is elastically biased in the return direction by a movable pivot attached to the focusing guide member and moved toward the trigger means when the focusing guide member is pressed down; a manual actuating lever that pushes the trigger lever so that the trigger lever pivots about a movable pivot toward the trigger means, the focusing guide member being depressed and the actuating lever pushing the trigger lever; A starting operation device for a bag stitching machine in which a trigger means is operated by pressing only when the case occurs.