JPH055855Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of industrial application This invention relates to a terminal structure of a wire cable for feeding out a binding string in an automatic stringing device of a binding machine.

(b) Prior art The automatic string threading device in a tying machine has been developed by the applicant of the invention in Japanese Patent Application No. 144458/1982 and Utility Application No. 99482/1983.
This automatic lace threading device is equipped with a feeding gear that is operated in the forward and reverse directions by a recoil mechanism, and is installed in the string feeding path, and the feeding gear is connected to the feeding gear. The spiral grooves on the circumferential surface of the wire cable are engaged, and the wire cable is advanced along the feeding guide tube by the normal rotation of the feeding gear, and the binding string, which is hooked to the string hooking part at the tip of the wire cable, is attached to the needle string. After inserting the wire cable into the hole and threading it through, the wire cable is pulled back to the storage position by reversing the feed gear.

(c) Problems to be solved by the invention By the way, there is a structure in which the spiral groove on the circumferential surface of the wire cable is engaged with the feeding gear of the feeding operation part, and the wire cable is forcibly fed out and threaded through the rotation of the feeding gear. In the automatic lace threading device, the wire cable receives thrust in the rotational direction due to the operation of the feeding gear, and also receives thrust from the bending of the feeding guide tube that is laid in a curved manner between various devices. Since the wire cable moves forward and backward while bending to follow the movement, the wire cable tends to rotate during the forward and backward movement, and as the wire cable rotates, the forward and backward movement stroke changes, making it difficult to place the binding cord in the specified position. A problem has arisen that makes it impossible to play.

In addition, if the wire cable is paid out too much without noticing a change in the forward/backward movement stroke of the wire cable, or if the wire cable is paid out too much due to carelessness even under normal conditions, the wire cable may be pulled out from the feeding operation part. There have also been problems where it has become detached and it is difficult to re-equip it.

(d) Means for solving the problem The present invention aims to solve the above-mentioned problem, and has a simple structure that can accurately prevent the rotation of the wire cable and accidental disconnection at all times. It is provided as follows.

That is, in the present invention, the string hooking section 14 is installed at the tip of the spiral grooved wire cable 13 that is moved forward and backward in the feeding guide tubes 15a, 15b by the feeding operation section K. Spiral grooved wire cable 13
In the automatic lace threading device that inserts the lace into the lace hole 2a of the needle 2 when the needle 2 moves forward, an end fitting 31 for preventing the wire from coming off is fixed to the end portion of the spiral grooved wire cable 13, and the guide tube is attached to the end fitting 31. Rotating fins 32, 32 that slide into contact with the inner surface of
It is characterized by having a wire cable structure with.

(E) Function and Effect of the Invention In the automatic string threading device to which the structure of the present invention having the above-mentioned configuration is applied, the binding string M is hooked to the string hooking portion 14 at the tip of the spiral grooved wire cable 13. When the feeding operation section K is rotated in the normal direction, the spiral grooved wire cable 13 is moved forward in the feeding guide tube by the operation of the feeding gear of the feeding operation section K that engages with the spiral groove, and the binding string M is latched. The string hooking part 14 is drawn out to a position where it passes through the string hole 2a of the needle 2. Then, when the binding string M that has passed through the string hole 2a of the needle is pulled out from the string hooking part 14 at the feeding position and a predetermined action is performed, the feeding actuating part K is operated in the reverse direction, and the spiral grooved wire cable 13 is The feeding guide tube is drawn into the storage section and returned to the original storage position, and in both the advancing and retracting processes, the end fitting 31 fixed to the end of the spiral grooved wire cable 13 is Since the rotation stopper fins 32, 32 are in wing-like sliding contact with the inner surface of the feeding guide tube to prevent the rotation of the spiral grooved wire cable 13, the forward and backward movement stroke of the spiral grooved wire cable does not change. The spiral grooved wire cable always operates properly, and even if the spiral grooved wire cable is operated in the advancing direction beyond the set stroke, excessive extension can be stopped by the end fitting 31. This will surely prevent the spiral grooved wire cable from coming off.

(F) Embodiments Next, embodiments of the present invention will be described with reference to the attached drawings.

First, the overall structure of the binder to which the present invention is applied will be explained with reference to FIG. 7. The pretreatment section of the binder has a stem culm pulling device A obliquely installed at the front end with a low front and rear height, and a stem culm A stem culm leaning guide plate B is erected at the rear of the cutting blade mechanism 1 installed horizontally at the lower rear of the pulling device, and the stem culm is trimmed by the stem culm lifting device A and cut by the cutting blade mechanism 1. It is configured to transport the stem culm to one side of the fuselage.

A tying machine C is connected to the end of the conveyance path that conveys the stem culms to one side of the machine body, and the front side of the tying passage of the tying machine C consists of a knot cover, a knotter bill, a string holder, etc. A knotter and a bundle discharge arm are provided, and a needle 2, a door/binding clutch operating body, a packer, etc. are provided at the rear of the binding passage.

The above-mentioned pre-processing section is attached to the front part of the traveling vehicle body, and the traveling vehicle body is configured to run by driving the wheels with the installed engine E, and to be operated by the handle section 3. A string cheese holder 4 is arranged on the traveling mechanism between the leaning guide plate B, and a binding string M is let out from the string cheeses D and D stored therein and directed toward the string hole 2a at the tip of the needle 2. A feed-out operating section K of an automatic string threading device is installed in the middle of the string feed-out path.

The string cheese holding section 4 accommodates and holds the two string cheeses D, D horizontally (with the longitudinal direction perpendicular to the direction of movement of the aircraft) in front and back parallel, and the string cheeses D, D are The feeding ports D1, D1 for taking out the string ends are placed at approximately the same distance from the string gripping position (detailed structure will be described later) in the feeding operation section K, and the string grips are placed in substantially the same condition from both string cheeses D, D. The structure is such that the string M can be supplied to the section.

Next, the detailed structure of the feeding operation part K will be explained. A case 5 is fixedly attached to the handle part 3 of the traveling vehicle body, and a recoil mechanism 6 is disposed within the case 5.

The recoil mechanism 6 is configured by equipping a vertical recoil shaft 10 with a drum 8 around which a recoil cable 7 is wound and a recoil spring 9.

When the recoil handle 7a connected to the end of the recoil cable 7 is pulled in a direction perpendicular to the handle part 3, the recoil shaft 10 and the drum 8 rotate in the forward rotation direction, and the recoil handle 7a When the tensile force applied to is released, the recoil shaft 10 and drum 8 are rotated in the reverse direction by the unwinding force of the recoil spring 9, so that the recoil cable 7 is wound around the drum 8.

A feeding gear 11 is fitted and fixed to the upper end of the recoil shaft 10, and a guide roller 12 is disposed opposite to the outer circumference of the feeding gear 11, and a guide roller 12 is provided between the two 11 and 12 for feeding the binding cord. The spiral grooved wire cable 13 is inserted, and the spiral protrusion formed on the outer periphery of the spiral grooved wire cable 13 is engaged with the teeth of the feeding gear 11, and the forward rotation of the gear 11 forces the spiral grooved wire cable 13 to rotate in the normal direction. It is configured to be rolled out.

The spiral grooved wire cable 13 is provided with a string hooking part 14 installed at its tip for hooking and holding the string end of the binding string M, and is normally drawn and stored in the storage part 15a of the feeding guide tube. .

The storage section 15a of the feeding guide tube is divided into a front storage section and a rear storage section, which are arranged before and after the portion where the feeding gear 11 and the guide roller 12 are located.
The rear storage part serves to completely store the spiral grooved wire cable 13 in the retracted state, and the front storage part has a string for hooking the binding string M to the string hooking part 14 of the spiral grooved wire cable. A set groove 16 is provided.

When the binding string M is to be hooked to the string setting groove 16, the string hooking portion 14 is pulled in and stored behind the string setting groove 16.

A string guide plate 17 is provided on the front upper surface of the case 5, and the binding string M is inserted into the guide hole 17a of the plate. street needle 2
A string brake device 18 and a slack removing rod 19 are installed on the string feeding path, and the binding string M is fed out through these as well. , delivery pipe 15b
The front end of the needle 2 is opened near the back of the tip of the needle 2 in the standby position.

The string brake device 18 is installed in a portion adjacent to the exit side of the guide hole 17a, between the front end of the front storage portion of the feeding guide tube and the rear end of the feeding pipe 15b, and applies elastic pressure toward the brake roller 18a. The binding string M that passes between the brake plate 18b and the brake plate 18b that is pressed
The braking force can be adjusted by changing the pressure of a spring 21 using a braking force adjustment handle 20.

The slack-reducing rod 19 is made of a spring material, and is attached by hooking the spring end of the coiled spring portion at the base to a support plate 23 fixed to the brake roller shaft 22, and extends from the coiled spring portion. The other end is configured with a ring portion 19a for inserting the binding string, and the ring portion 19a through which the binding string M is inserted is the pipe 1.
By being positioned laterally from 5b, the slack in the binding string is taken up.

Note that when the spiral grooved wire cable 13 is fed out by the feeding actuator K, if the above-mentioned brake device 18 is in the braking state, the spiral grooved wire cable 13 passes through the string brake device 18 portion. Moreover, if the slack removing rod 19 is positioned sideways from the feeding pipe 15b, the binding string M cannot be inserted through the ring portion 19a. Therefore, when threading the string, a mechanism is installed to release the braking state of the string brake device 18 and move the slack-removal rod 19 to a position where its ring portion 19a concentrically coincides with the delivery pipe 15b. .

That is, the brake release roller 24 is installed on the support plate 23 fixed to the upper part of the brake roller shaft 22 together with the above-mentioned slack removing rod 19, and the base of the actuating arm 25 is fitted to the lower end of the brake roller shaft 22. A pin 26 is provided protruding from the tip of the operating arm 25, and the pin 26 is inserted into the elongated hole 28 of the interlocking arm 27.
is engaged with.

The interlocking arm 27 is rotatably fitted to a pivot shaft 29 installed on the opposite side of the recoil shaft 10 across the brake roller shaft 22, and the tip extending in the direction of the recoil shaft 10 is connected to the drum 8. It is engaged with a guide portion 30a of a guide wheel 30 that is integrally connected to the lower side of the guide wheel 30.

When the recoil shaft 10 is rotated in the normal direction by the recoil mechanism 6, the interlocking arm 27 swings and bends in the axial direction of the recoil shaft due to the guiding action of the guiding portion 30a. 27 is moved to release the braking state of the brake device, and at the same time the slack-reducing rod 19 is moved to a position concentric with the delivery pipe 15b, and the recoil shaft 10 is corrected. The spiral grooved wire cable 13 that is fed out by the feeding gear 11 in the rolling action easily passes through the brake device 18 in the brake release state, passes through the ring portion 19a of the slack removal lever 19, and enters the string hole 2 at the tip of the needle.
It advances to a position where it passes through a.

By the way, spiral grooved wire cable 1
3 is advanced or retracted by the feeding operation part K, the spiral grooved wire cable 1 is moved by the operation of the feeding gear 11 that meshes with the spiral protrusion.
3 tends to rotate, so in order to prevent the rotation, an end fitting 31 is fixed to the end of the spiral grooved wire cable 13, and a wing-shaped circumference that slides on the inner surface of the feeding guide tube is attached to the end fitting 31. The stop fins 32, 32 are provided in series.

Next, the operation of the embodiment will be explained. String cheese D
As shown in FIG. 1, the binding cord M derived from the recoil cord M is set in the cord setting groove 16, and then the recoil handle 7a of the recoil mechanism 6 is pulled. The recoil shaft 10 is rotated clockwise in the figure, and the feeding gear 11 fitted on the coaxial shaft 10 is rotated, so that the spiral grooved wire cable 13 is fed out by the feeding gear 11 and the guide roller 12, and the string setting groove is 16
The string locking protrusion 14 hooks and holds the binding string M set in the cable and feeds it out from the storage section 15a of the feeding guide tube to the feeding pipe 15b.In this case, the spiral grooved wire cable The rotation-preventing fins 32, 32 of the end fitting 31 fixed to the end of the spiral grooved wire cable 13 contact the inner surface of the feeding guide tube in the shape of both wings to prevent rotation, so that the spiral grooved wire cable 13 can be accurately pitched without rotating. It is rolled out.

The spiral grooved wire cable 13 to be let out has to pass through the brake device 18 and the ring portion 19a of the slack-removal rod 19, but before the string locking protrusion 14 at the tip reaches the brake device 18 etc. The actuating arm 25 swings by the interlocking arm 27, which is caused to swing by engaging with the guide portion 30a of the guide wheel 30 that rotates together with the drum 8, to actuate the support plate 23, and the brake release roller installed on it swings. 24 and brake plate 18b.
The spiral grooved wire cable 13 is pushed down so as to be separated from the brake roller 18a, and at the same time the slack removing rod 19 is moved to a position where the ring portion 19a matches the delivery pipe 15b. 1
It easily passes through the brake device 18, which is in a brake release state with the separation of 8a, and is fed out into the payout pipe 15b through the ring portion 19a of the slack-removal rod 19, so that the string locking protrusion 14 at the tip engages the string of the needle 2. It is advanced to a position where it passes through the hole 2a. If the spiral grooved wire cable 13 is about to be paid out beyond a predetermined value, the end fitting 31 fixed to the end of the wire cable 13 will be connected to the feeding gear 11 in the feeding operation section K and the guide. The wire cable 13 cannot be passed through once it gets caught in the space between the rollers 12 and the wire cable 13 is automatically prevented from being drawn out excessively.

The retraction of the spiral grooved wire cable 13 is performed by the unwinding force of the recoil mechanism 6, and when the recoil mechanism 6 operates to unwind, the retracting of the spiral grooved wire cable 13 is performed by the interlocking force that engages with the guide wheel 30, which rotates in the reverse direction. The arm 27 returns to its original state, and the brake device 18 is returned to the braking state, and the slack-removal rod 19 is also returned to the slack-removal position displaced laterally from the delivery pipe 15b, and the tied string M that has been passed through the arm 27 is returned to its original state. This applies the desired braking force and takes up the slack.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the automatic lace threading device according to the present invention in the lace set state, Fig. 2 is a cross-sectional side view thereof, Fig. 3 is a plan view of the lace threading device of the present invention in the finished state, and Fig. 4 is the present invention FIG. 5 is a cross-sectional side view, FIG. 6 is a view taken in the direction of the arrow in FIG. 5, and FIG. 7 is an overall plan view of the binder to which the present invention is applied. K... Feeding operation part, M... Binding string, 2... Needle, 2a... Needle string hole, 13... Spiral grooved wire cable, 14... String hanging part,
15a, 15b... feeding guide tube, 31... end metal fitting, 32... rotation stopper fin.

Claims (1)

[Scope of utility model registration request] The feeding guide tubes 15a, 15 are controlled by the feeding operation section K.
A string latching portion 14 is installed at the tip of the spiral grooved wire cable 13 that can be moved forward and backward in b, and the binding string M that is latched to the string latching portion 14 can be attached even when the spiral grooved wire cable 13 moves forward and backward. In the automatic string threading device for inserting the string into the string hole 2a of the needle 2, the spiral grooved wire cable 13
Automatic string threading in a tying machine, characterized in that an end fitting 31 for preventing slipping off is fixed to the end portion of the tying machine, and the end fitting 31 is provided with rotation-preventing fins 32, 32 that slide into contact with the inner surface of the feeding guide tube. Wire cable structure of the device.