JPH0440437Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is a Notterbil type binding machine.
This relates to a string threading device improved and devised so that a binding string can be easily passed through a string threading hole at the tip of a needle.

(b) Conventional technology In the Notterville type tying machine, when starting work or breaking the string, the string led out from the string is extended from the string brake, through the string guide pipe, through the string passage hole at the tip of the needle, and then passed through the needle. Preparations are made to start tying by holding the pieces in a string holder, but when threading the string, the string brake, string guide pipe, etc. The disadvantage is that the work is extremely difficult as the user has to insert the string inside the device, pull it out, pass it through the hole in the needle, and then clamp the end of the string in the string holder. It is something.

Therefore, some conventional techniques include
As seen in Publication No. 104913, the front end opening of the string guide pipe extending from near the storage section for the winding string is
Place it opposite the string hole of the needle at the stop position,
There is a device that automatically threads the string by providing an elastic rod feeding and storing mechanism that pushes an elastic rod with a string locking part at the tip from the rear end opening of the string guide pipe, winds it up, and stores it. ing.

(c) Problems to be solved by the invention By the way, in the conventional structure described above, the tip of the string is locked in the string locking part formed at the tip of the elastic rod that is let out from the elastic rod payout and storage mechanism. hand,
Guide the elastic rod through the string guide pipe, insert the elastic rod and string through the string passage hole of the needle, then remove the string that is locked to the string locking part at the tip of the elastic rod, and insert the tip of the string into the needle. The elastic rod remains in the string passage hole and is stored in the elastic rod feeding and storing mechanism, but when the elastic rod is stored, the elastic rod comes into contact with the string in the string guide pipe, and the string is taken back. There is a problem in that the string inserted through the string passing hole of the needle slips out and enters the string guide pipe, so after passing the string through the string passing hole of the needle with an elastic rod, immediately hold the end of the string. It is something that must be kept.

In addition, since the elastic rod is pushed through a bent string guide pipe by hooking a string, it must have a certain degree of rigidity. Sometimes it is necessary to increase the winding angle,
There is a problem in that the elastic rod extension and storage mechanism inevitably becomes larger.

The present invention was carried out with the aim of providing a device that solves the above-mentioned problems of conventional string threading devices.

(d) Means for Solving the Problems In order to achieve the above object, the present invention provides a string guide pipe 17 on the back side of the needle 11 with the string passing hole 13 at the tip of the needle 11 as a reference.
Pass the string through the needle 11 on the ventral side of the guide pipe 1.
9 is provided, and an automatic winding device B for the string threading body 22 is provided at the side end of the string passing guide pipe 19 far from the needle 11, and a string locking portion 23 is provided at the tip of the string passing body 22.
This is a string threading device for a tying machine equipped with a tying machine.

(E) Function Therefore, in the lace threading device of the present invention, when the lace threading body 22 of the automatic winding device B is pulled out and extended, the lace threading body 22 passes through the lace threading guide pipe 19 and the lace of the needle 11. Through hole 13, string guide pipe 17
Since the string guide pipe 17 extends from the tip through the string guide pipe 17, the string passing body 22 is in that state.
The binding string that has been fed out from the winding string and passed through the string brake is hooked to the string locking part 23 formed at the extending end of the string by means of tying or the like, and the automatic winding device B is operated to rewind. If so, the binding string unwound from the winding string will automatically pass through the string guide pipe 17 and the needle 1.
1 is inserted into the string passing hole 13 and pulled into the string passing guide pipe 19 side, and when the automatic winding tool B fully winds the string and operates and stops, the string passing body 2
The end of the string is held in place by the latched side. When the tying machine is operated after the string has been threaded as described above, the needle 11 moves toward the string holder at the knot and performs a predetermined operation, causing the string holder to automatically grab the string. The work of threading the string through the string guide pipe 17 and the string passing hole 13 of the needle 11, as well as the work of making the string end grip the string holder, are all carried out without the operator approaching dangerous parts such as the needle 11 or the string holder. This can be done safely without any problems.

(f) Examples Hereinafter, embodiments of the present invention will be described in detail based on drawings of specific examples.

The drawings of specific examples illustrate the case where the present invention device is implemented in a single-row type binder (reaping and binding machine),
As seen in FIG. 4, the main part of the binder is that a reciprocating cutting blade 3 is installed horizontally at the rear end of a stem culm pulling guide path 2 formed between the reaping frames 1, 1. The binding machine A is installed in a region extending from a lateral conveyance path formed at the rear of the cutting blade 3 to one lateral side of the cutting blade 3.

The bundling machine A is formed in a Notterville type like the well-known one, and has a bundling passage 5 located approximately in the center of the upper surface of the bundling mission 4 in the front and rear direction connected to the horizontal conveyance passage. A knot part consisting of a knot cover 6, a knotter bill 7, a string holder 8, etc., and a bundle release arm 9 are arranged on the front side, and a packer 10, a needle 11,
It is formed by disposing a door 12 etc. which also serves as a binding clutch actuating body.

A string brake 15, a slack removing rod 16, a string guide pipe 1, which is fed out from the winding string 14, is inserted into a string hole 13 formed at the tip of the needle 11.
A string 18 extending through the string 7 is passed through the string holder 8, and the string end can be held by the string holder 8.

The string guide pipe 17 is arranged on the back side of the needle 11, and an opening 17a at one end thereof is located near the slack removing rod 16, and an opening 17b at the other end is at a standby stop position. It is located close to the string passing hole 13 at the tip of the needle 11 so as to communicate with the string passing hole 13 at the tip of the needle 11.

Further, on the ventral side of the needle 11, a string guide pipe 19 corresponding to the string guide pipe 17 is provided.
is installed, and its tip opening 19a is located opposite the opening 17b of the string guide pipe 17 across the string passing hole 13 of the needle 11 in the standby position, and the opening at the other end 19b is
A slit 20 is provided in a portion located near the automatic winding tool B and having an appropriate length extending from the opening 19b toward the tip opening 19a.

A string passing body 22 connected to the recoil spring 21 of the automatic winding tool B is inserted into the string passing guide pipe 19, and the string passing body 22 is formed of a spring material or the like and has a string hooked at the tip. A handle 24 is provided at a position spaced apart from the tip by a predetermined distance.

When the string passing body 22 is moved toward the front end of the string passing guide pipe 19 along the slit 20 while resisting the recoil spring 21 with the handle 24, the needle 1 is moved from inside the string passing guide pipe 19.
Pass the string guide pipe 17 through the string passing hole 13 of No. 1.
The string hooking part 23 at the tip of the string extends inward and passes through the opening 17a of the string guide pipe 17 to the slack removing rod 16.
The automatic winding tool B is in a state of advancing in the direction of
When the cord is unwound, the cord is contracted from the extended state, and the cord hooking portion 23 at the tip is pulled back into the cord passing guide pipe 19.

The automatic winder B is provided with a lock mechanism 25, and by operating the lock mechanism 25, the recoil spring 21 can be fixed at any extended or contracted position.

Next, the operation of the specific example device will be explained. In normal cases, the recoil spring 21 in automatic winding tool B
is fully wound up, and the string passing body 22 connected thereto is in a state where the entire string passing body 22 is retracted and retracted into the string passing guide pipe 19 as shown by the solid line in FIG. The string passing hole 13 at the tip of the needle 11 is connected to the opening 17b of the string guide pipe 17 and the opening 19 of the string passing guide pipe 19.
It is located between A and A.

In this state, if you hold the handle 24 and move it along the slit 20 in the direction of the needle 11 while resisting the recoil spring 21, the string threading body 22 will expand and the tip hooking portion 23 will be inserted into the string threading hole of the needle 11. 13. The string passes through the guide pipe 17 and advances toward the slack-removal rod 16 from the opening 17a on the opposite side of the pipe (the state shown by the phantom line in FIG. 1).

Next, the string hooking part 2 advanced from the opening 17a.
3, the string 18 that is let out from the winding string 14 and extended through the brake 15 and the slack removing rod 16 is locked, and the automatic winding device B is operated to recoil.
The string passing body 22 is contracted in the opposite manner to the above, and the string hooking portion 23 passes through the string guide pipe 17 and the string passing hole 13 of the needle 11 and is pulled back to the position shown by the solid line in FIG. String 18 drawn out from 14
is drawn into the string passing guide pipe 19 through the string guide pipe 17 and the string passing hole 13, and when this state is reached, the automatic winding tool B
If the locking mechanism 25 is operated to fix the recoil spring 21 so that it does not expand or contract, and then the binding clutch is inserted, the needle 11 will be attached to the string holder 8 at the knot.
By performing a predetermined operation toward this point, the string holder 8 automatically grasps the string 18 passed through the string hole 13.

(G) Effect of the device As is clear from the above explanation, in the present invention, a string guide pipe 17 is provided on the back side of the needle 11 with the string passing hole 13 at the tip of the needle 11 as a reference.
Pass the string through the needle 11 on the ventral side of the guide pipe 1.
9 is provided, and an automatic winding device B for the string threading body 22 is provided at the side end of the string passing guide pipe 19 far from the needle 11, and a string hooking portion 23 is provided at the tip of the string threading body 22.
Since the lace threading device for a tying machine is characterized by having the following features, it is possible to insert the string not only into the string guide pipe 17 but also into the string threading hole 13 in the needle 11 and to grip the string end with the string holder 8. All processes up to this point can be carried out automatically and efficiently, and the operator can stay away from dangerous parts such as the needle 11 and the string holder 8 during the work, making it safer. There is an advantage that the cord passing body 22 is connected to the cord guide pipe 1.
Pass the string 18 through the hole 13 of the needle 11 through the hole 13 of the needle 11.
After passing the string through the string passing guide pipe 19, the elastic rod corresponding to the string passing body 22 of the present invention, like in the conventional device, passes the string through the string passing hole of the needle through the string guide pipe. , the elastic rod is in contact with the string in the string guide pipe, and the string passed through the string passing hole of the needle is
There is no risk of being dragged into the string guide pipe, and furthermore, since the string passing body 22 of the present invention hooks the string 18 on the string hooking part 23 at the tip and pulls it in, this string passing When the body 22 is made of an elastic body, there is no need to increase its rigidity, and even if the body 22 is wound into the automatic winder B,
The winding angle may be small, and the automatic winding tool B can be configured compactly.

[Brief explanation of the drawing]

The drawings show a specific example of the present invention; FIG. 1 is a partial view showing the main structure of the specific device, FIG. 2 is an enlarged cross-sectional view of FIG. 1, and FIG. 3 is an explanatory diagram of the operation; FIG. 4 is a plan view of a portion of a binder in which the device of the present invention is implemented. 11... Needle, 13... String hole, 17...
... String guide pipe, 18... String, 19... String passing guide pipe, 22... String passing body, B... Automatic winding tool.

Claims (1)

[Scope of utility model registration request] A string guide pipe 17 is installed on the back side of the needle 11 with reference to the string passing hole 13 at the tip of the needle 11.
A string passing guide pipe 19 is provided on the ventral side of the needle 11, and an automatic winding tool B for the string passing body 22 is provided at the end of the string passing guide pipe 19 that is far from the needle 11, and a string hooking portion is provided at the tip of the string passing body 22. 23. A string threading device in a binding machine, characterized by comprising: