JPS5836644Y2 - Seal cutting mechanism safety device for filling and packaging machines - Google Patents

Description

[Detailed description of the invention] This invention mainly relates to a filling and packaging machine for packaging foods.
In particular, the present invention relates to a safety device for a seal cutting mechanism in the packaging machine.

A continuous cylindrical bag made of heat-weldable material is put into a filling cylinder for filling, stored, and the items are sequentially input, and the opening is welded by the impulse method, and the bottom of the next bag is welded.
In a filling and packaging machine that welds and cuts at the same time, it is necessary to press the presser and the heating member together with a force of 50 to 200 kg, and it is also necessary to manually assist in filling the products and arranging the bags.

At this time, due to operational errors, hands, fingers, etc. may be caught between the presser and the heating member, and in machines without safety devices, there is a risk of cut fingers or burns.

An object of the present invention is to provide a filling and packaging machine that can be used extremely safely by eliminating the above-mentioned dangers.

Therefore, the present invention includes a part 7 having a current intermittent switch 12 for operating the heating/cutting system of the packaging material 30 together with a locking element 6 that reciprocates over a predetermined distance, and a part 7 that is slidably attached to the part 7. Lock the spring 16 which is weaker than the hardness of your fingers 6
It has a pressing elastic piece 11 that rotatably supports an operating piece 9 provided with an engaging stepped portion 8 that is moored to the locking element 6, and that operates the current intermittent switch 12. Support 1
0, an operation stopper 14 for operating an operation piece 9 provided with an engagement step 8 in the direction of engagement with the locking element 6, and the locking element 6.
This is a seal cutting mechanism safety device for a filling and packaging machine, which is comprised of a support rod 3 attached to the front of the machine frame 19, and a presser 1 which clamps a packaging material 30 between a heating member 2 fixed to a machine frame 19.

To explain based on the illustrated embodiment, the opening of the (packaging material 30) of a continuous plastic bag containing food etc. is welded and cut.
A filling and packaging machine of the type that forms the bottom at the same time, comprising a presser 1 for welding and cutting the upper part of the cylindrical packaging material 30 containing the food, etc., and a support rod 3 for bringing the heating member 2 into and out of contact with each other, A compression coil spring 4 acts on the support rod 3.

A reciprocating lever 5 that moves left and right has a portion with a switch 12 having a locking element 6, that is, a movable rod 7 supported by a shaft 27, and a microswitch 12 is attached to the locking element 6.

A switch operation piece 9 provided with an engagement step 8 moored to the locking element 6 is pivotally connected to a support tube 10 loosely inserted into the movable rod 7, and then attached to the support rod 3.

Further, a microswitch pressing piece 11 is attached to the support tube 10, and the microswitch pressing piece 11 is brought into contact with the protrusion 13 of the microswitch 12 fixed to the movable rod 7.

The machine frame 19 has a sliding tube 15 provided with a stopper 14 for the switch operation piece 9, and a locking element 6 on the movable rod 7 and a support tube 10.
Coil springs 16 and 17 are applied to the gap and the sliding tube 15, respectively.

Spring 17 is set weaker than spring 16 (see Figure 2).

In the figure, reference numeral 18 denotes a guide rod of the sliding tube 15 which is screwed onto a fixed screw tube 20 attached to the machine frame 19 and fixed with a nut 21.

22 is the operating cam of the lever 5, 23 is the return coil spring of the lever 5, 25 is the pivot of the switch operation cable 9, and 26 is a mounting piece for the switch operation piece 9 and the microswitch pressing piece 11, which is fixed to the support tube 10. .

28 is a spring acting on the switch operation piece 9, 29 is a filling material, and 31 is a filling cylinder.

Since the present invention has the above-described structure, in a normal state, as shown in FIG. The packaging material 30 placed between the bags is pressed against the mouth of the manufactured continuous bag and cut by heating. At this time, the switch operation piece 9 is moved backward and rotated by the stopper 14, so that the moving rod 7
The engagement step 8 is engaged with the stopper 6 of the microswitch, and the pressing piece 11 does not press the protrusion 13 of the microswitch.

Further movement compresses the coil springs 4, 17 and current flows through the heating member 2 to heat compress and bond the sheets.

Next, when an object such as a hand is caught, the coil spring 16 is compressed as shown in FIG. 3 (the coil spring 16 has a weaker spring constant than the fingers).

), since only the moving rod 7 moves, the protrusion 11 of the pressing piece 11
Since a pushes the protrusion 13 of the microswitch 12, electricity is cut off.

Since the switch operation piece 9 moves further and is in the raised state by the spring 28, even if the stopper 14 is touched, the locking element 6 does not engage with the retaining step 8 of the switch device piece 9.

Therefore, the electric current is cut off and the pressure bond between the presser 1 and the heating member 2 is reduced to only the force of the coil spring 16, which is set at a weak force of 7 to 8 kg, eliminating the risk of cutting fingers or burning, making it safe to use. be able to.

[Brief explanation of drawings]

The drawings show an embodiment of the seal fusing mechanism safety device for a filling and packaging machine according to the present invention. Fig. 1 is a side view, Fig. 2 is a side view of the same in normal operation, and Fig. 3 is a side view of the same when the device is in normal operation. FIG. 4 is a side view of the same as above in the case of a pinched abnormality, and FIG. 4 is a partially vertical side view of the main part. 1...Press element, 2...Heating member, 3.
...Support rod, 4...Coil spring, 5...
...Reciprocating lever, 6...Latcher, 7.
...Moving rod, 8...Engagement step, 9...
...Switch operation piece, 10...Support pipe, 11
... Pressing membrane piece, 11a ... Convex portion, 12
...Micro switch, 13...Protrusion, 14...Stopper, 15...Sliding tube, 16.17...Coil spring , 19...
...Machine frame, 30...Packaging material.

Claims (1)

[Scope of utility model registration request] A portion 7 has a current intermittent switch 12 that operates the heating/cutting system for the packaging material 30 along with a locking element 6 that reciprocates in a predetermined stroke, and the stiffness of the fingers that are slidably attached to the portion 7 An operation piece 9 having a weak spring 16 between it and the lock 6 and having an engagement step 8 moored to the lock 6 is rotatably supported, and the current intermittent switch 12 is operated. A support body 10 having a pressing elastic piece 11 and an engaging stepped portion 8
An operating stopper 14 for operating the operating piece 9 provided with a locking element 6 in the direction of engagement with the locking element 6, a heating member 2 fixed to the machine frame 19, and a support rod 3 attached in front of the locking element 6. A seal cutting mechanism safety device for a filling and packaging machine, which includes a presser 1 that clamps a packaging material 30 between.