JPS5816846Y2 - Forming drum string hook device for paper bag handle piece manufacturing machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a forming drum string hook device for a paper bag handle piece manufacturing machine.

The strap hooks of the forming drum of the conventionally proposed paper bag handle piece manufacturing machine are slidably attached to both sides of the drum in a staggered manner so that they protrude vertically into and out of the drum. Further, a roller is attached to the base of the claw, and the roller rolls on the circumferential surface of a plate cam surface attached to the outer periphery of the drum shaft, and at the convex part of the cam, the string hook part resists the tension spring and protrudes from the outer circumferential surface of the drum. When the handle edge is supplied, the string is wound around the string hanging part in a staggered manner according to the rotation of the forming drum to form a handle string loop.

Next, paper was pasted on the upper and lower surfaces of the staggered handle string ring, and at the same time, the string hooking part was recessed from the drum surface to remove the formed handle string ring from the string hooking part. The continuous paper strip on the handle had peeled off from the forming drum.

However, in the case of the conventional lanyard, there is a risk that the string hooked to the lanyard may come off midway due to the string's curl, and the string to be hung may be braked to apply a strong tensile force. Therefore, when the string hanging part was pulled vertically downward, the hanging string was also pulled in, making it uncertain whether the handle edge would come off.

The present invention was proposed in order to eliminate the above-mentioned drawbacks of the conventional method, and by making the movement of the strapping part an up-and-down motion of swinging the fulcrum by a pin joint, when the tip of the strapping part retracts from the drum surface, the handle The formed drum string of a paper bag handle piece making machine tries to escape by tilting while entering the inside of the string ring, and the string that has been pulled strongly loosens and the nail can escape easily, and the string does not come off in the middle. It is an object of the present invention to provide a hooking device.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a forming drum, on both sides of which string hanging parts 2 are provided in a staggered manner, and on the outer peripheral surface of the drum 1 there is a handle mount (not shown). The surface is wrapped with glue.

The string a is supplied from the outside through the string guide nozzle 3, is hooked to the string hooking parts 2, 2 in a staggered manner, and is meanderingly mounted on the handle mount, on which a handle upper mount (not shown) is placed. When these are overlapped and pressed together, the forming of the handle strip is completed.

The string hooks 2 provided on the left and right outer sides of the forming drum 1 are attached to a lever 7 which is swingably attached to a flange 6 fixed to the drum shaft 5 with a fulcrum pin 4. A tapered protruding piece 8 is provided on the top.

Further, 9 is a frame that supports the drum shaft 5, and a lever pin 10 is provided on the portion of the balance lever 7 extending toward the frame 9, and the pin 10 and the roller lever 11 attached to the flange 6 are connected by a link 12. has been done.

13 is a plate cam attached to the outer periphery of the drum shaft 5, and a roller 16 provided on the opposite side of the lever pin 15 which pivots the link 12 to the fulcrum pin 14 of the roller lever 11 rolls on the surface of the plate cam 13. It looks like this.

Reference numeral 17 denotes a tension spring that urges the strap hanging portion 2 to be recessed from the surface of the drum 1, and resists the tension spring 17 to cause the plate cam 13 to
At the convex portion, the strap hooking portion 2 is aligned so as to protrude from the surface of the forming drum 1 and become horizontal.

Then, in the state where the string hooking part 2 is protruding, the string a is supplied from the string guide nozzle 3, and the string a is wound around the ends of the left and right string hooking parts 2 in a staggered manner.

After completing the handle molding and adhesion, when the rollers 16 come to the four parts of the plate cam 13, the rollers 16 are lowered by the tension springs 17.

That is, the lever 10 on the opposite side of the balance lever 7 has a tension spring 17.
The link 12 is raised by the action of the link 12.

Therefore, the balance lever 7 is in the state shown by the two-dot chain line in Fig. 3,
On the other hand, the string hanging part 2 side is lowered by the tension spring 17 to a height where the roller 16 contacts the plate cam 13 and rolls.

In other words, the strap hanging portion 2 tilts inward of the handle strap at the same time as the handle strap is removed.

When the movement of the strap hook 2 is shown in FIG. 3, the state where the strap hook 2 protrudes from the drum surface is the state indicated by the solid line I, and the roller 16 is located on the convex portion of the plate cam 13. The strap hanging part 2 is horizontal as shown by the solid line.

Also, in the recessed part of the plate cam 13, the roller 16 is
falls down while rolling on the cam surface, the lever pin 10 of the lever 7 rises from I to II, and the strap hook 2 moves from I' to II.
', and the handle string a, which had been hung in a staggered manner on the string hooking parts 2, 2, remains in the same position, and only the string hooking device descends to the position II', so that the handle string a hangs on the string hooking parts 2, The hanging handle string can be easily removed.

As explained in detail above, in the present invention, the pin member located on the opposite side to the up-and-down rotation fulcrum of the strap-hanging portion is connected to the strap-hanging portion by a plate cam provided on the outer periphery of the forming drum shaft. from the lowered position where the strapping part protrudes from the drum surface and is in a horizontal state, to the raised position where the strapping part retracts from the drum surface to remove the handle strap loop and at the same time tilts inward to the strap loop. Swings up and down around the fulcrum pivot point.

Therefore, when the handle string ring is removed, the string hook part of the string hanging part does not descend vertically from the horizontal position where the string can be hung in a staggered manner, but instead sinks from the drum surface and at the same time tilts inside the string ring. There is no risk that the hanging part will pull in the hanging string, so the handle string can be reliably removed.

In addition, if a protruding piece is provided on the upper part of the strap hooking part, it is possible to prevent the handle strap loop from coming off the strap hooking part unnecessarily.

[Brief explanation of drawings]

Fig. 1 is a partially sectional front view of a string hook device showing an embodiment of the present invention, Fig. 2 is a sectional view taken along line XX in Fig. 1, and Fig. 3 is an enlarged view of the main parts in Fig. 1. , FIG. 4 is a view taken along the Y arrow in FIG. Explanation of the main parts of the diagram 1. Forming drum, 2.
...String hanging part (string hanging part integrated with the strap hanging part), 4...
...Fully pin (lifting rotation fulcrum), 5...Drum shaft, 7...Take-up lever (string hanging part), 10...
... Lever pin (pin member), 12 ... Link, 13 ... Plate cam, 16 ... Roller, 17 ... Tension spring.

Claims (1)

[Scope of utility model registration request] In a handle piece manufacturing machine having retractable strap hooks arranged in a left and right staggered manner on both ends of the outer peripheral surface of the forming drum, and on which strings are hung in a staggered manner to form a handle strap loop, the strap hooks The fulcrum of the up-and-down rotation of the part is set at a position recessed in the axial direction from the surface of the forming drum and further outside the outer edges of both ends of the drum, and the rotation of the strap part is A pin member is provided on the opposite side to the fulcrum and swings between up and down positions about the rotation fulcrum by a plate cam provided on the outer periphery of the forming drum shaft, and at the lower end position of the pin member, the The strapping part of the strapping part protrudes from the drum surface and is in a horizontal state, and at the rising end position of the pin member, the strapping part retracts from the drum surface to remove the handle strap ring, and at the same time, it moves inside the strap ring. A forming drum string hooking device for a paper bag handle piece manufacturing machine, characterized in that it is tiltable.