JPH09104408A - Automatic bundling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To let off a string smoothly by providing a bobbin holder at a front part of a vertical wall of an axis of rotation and holding a bobbin rotatably by the bobbin holder in such a manner that the axial core of the bobbin is in parallel with the axial core of the axis of rotation. SOLUTION: A bobbin holder 31 is arranged at a front part of a vertical wall 9 of an axis of rotation 12. A U-shaped main body 32 of the bobbin holder 31 is fixed to the axis of rotation 12 through a pair of brackets 33. In a front wall 32a of the main body 32, an axis of rotation 35 whose axial core is directed in the back-and-forth direction is fitted rotatably through a bearing. To the back end of the axis of rotation 35, a pinching disk 36 having a bobbin fitting protrusion 36a arranged at the central part is attached. In a back wall 32b of the main body 32, a sleeve 39 coaxial with the axis of rotation 35 is fitted rotatably back and forth but not rotatably against the back wall 32b. In the sleeve 39, the axis of rotation 35 is rotatably fitted. To the front end of the axis of rotation 35, the pinching disk 36 having the bobbin fitting protrusion 36a arranged at the central part is attached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an automatic binding machine.

[0002]

2. Description of the Related Art Conventionally, the following types of automatic binding machines have been known. That is, the machine frame, a vertical wall erected on the rear portion of the machine frame, a rotary shaft rotatably provided on the vertical wall with the axis centered in the front-rear direction, and this rotary shaft It was fixed to the machine frame so as to form a cord passage between the hanging plate provided so as to be rotatable relative to each other so as not to rotate together, the rear table provided under the hanging plate, and the rear table. A front table, a substantially L-shaped string winding arm provided on the front side of the vertical wall of the rotary shaft and adapted to rotate around the rear table, and provided on the lower side of the front table. A cord end clamp, a cord tie / cutting machine having a cord tie and a cutter, and a bobbin holder provided via a bracket on the rear portion of the rotary shaft protruding rearward from the vertical wall, The free end of the string winding arm is a string passage. The tubular bobbin is arranged to face each other, and the tubular bobbin is rotatably held so that the axis of the tubular bobbin is orthogonal to the axis of the rotating shaft. A string passage formed in the rotary shaft (a cord passage having an inlet at the rear end of the rotary shaft and a transverse outlet at the front of the vertical wall of the rotary shaft) provided on the cord winding arm. It is known that after it is hung on a string guide roller or the like, it is clamped by a cord end clamp of a cord tying / cutting machine through a cord insertion ring at a free end of a cord winding arm (special feature). See Japanese Patent Publication No. 57-13451).

[0003]

Disadvantages of the Prior Art The conventional automatic binding machine has the following drawbacks. Firstly, since the bobbin holder was provided via the bracket at the rear part of the rotary shaft projecting rearward from the vertical wall, that is, the bobbin holder largely protruded rearward of the machine frame, There is a drawback that it requires an extra installation space for the automatic binding machine. Second
In addition, since the string of the tubular bobbin held by the bobbin holder provided at the rear of the vertical wall passes through the vertical wall to reach the string winding arm, the string is connected to the string passage formed on the rotating shaft. (The string passage has an inlet at the rear end of the rotary shaft and a lateral outlet at the front of the vertical wall of the rotary shaft) to reach the string winding arm. Had to change the direction of 90 degrees, which hindered the smooth unwinding of the string.

[0004]

[Means for Solving the Disadvantages] The present invention employs the following means in order to eliminate the above disadvantages. According to the invention of claim 1, a machine frame, a vertical wall erected on a rear portion of the machine frame, a rotary shaft rotatably provided on the vertical wall so that an axial center thereof is oriented in the front-rear direction, and A hanging plate provided on the rotating shaft so as to be rotatable relative to it so as not to rotate with it,
A rear table provided in the lower part of the hanging plate, a front table fixed to the machine frame so as to form a cord passage between the rear table and the rotary shaft, in front of the vertical wall. A substantially L-shaped string winding arm that is provided and is configured to rotate around a rear table, and a string knot having a string end clamp, a string knot, and a cutter that are provided on the lower side of the front table. A cutting machine and an automatic binding machine in which the free end of the string winding arm faces the string passage, a bobbin holder is provided in front of the vertical wall of the rotary shaft. The bobbin is rotatably held by the bobbin holder with its axis parallel to the axis of the rotary shaft.

[0005]

The first aspect of the present invention has the following functions. Since the bobbin holder is provided in front of the vertical wall of the rotary shaft, that is, the bobbin holder does not project to the rear of the machine frame unlike the conventional case, the installation space of the automatic binding machine is compared with the conventional one. Can be narrowed. In addition, since the bobbin is rotatably held in the bobbin holder with its axis parallel to the axis of the rotation shaft, the direction of the cord is set to 90 degrees.
° It is possible to reach the string winding arm straight without changing it, so it is possible to realize a smooth payout of the string compared to the conventional one.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In this description, the front means the front side of FIG. 1, the rear means the back side of FIG. 1, and the left means FIG.
The left side means the right side.

On the upper part of the machine frame 2 of the automatic binding machine 1, there is provided a binding object placing table 5 having a string passage 6 which is long in the left-right direction. The bundled object placement table 5 will be described in detail below by forming a string passage 6 between the front table 5A fixed to the machine frame 2 and long in the left-right direction, and the front table 5A. It has a rear table 5B provided on the machine casing 2 by means.

The rear table 5B is provided on the machine casing 2 as follows. That is, a vertical wall 9 is provided at the rear portion of the machine frame 2 so as to project upward, and a bearing 10 is provided at a central portion in the upper left-right direction of the vertical wall 9 so that its axial center is oriented in the front-back direction. The rotating shaft 12 is rotatably fitted, and a hanging plate 13 is rotatably provided at the front end of the rotating shaft 12 via a bearing. At the lower end of the hanging plate 13, the upper surface is flush with the upper surface of the front table 5A. The rear table 5B is attached so that it becomes one. With this configuration, the rear table 5B does not rotate together with the rotating shaft 12 even if the rotating shaft 12 rotates. An arm passage gap 14 is formed between the left and right portions of the rear table 5B and the machine frame 2 and between the vertical wall 9 and the hanging plate 13 to allow passage of a cord winding arm 16 described later.

The rotary shaft 12 is rotated clockwise in FIG. 3 by an arm operating motor (not shown). An L-shaped string winding arm 16 is fixed to the rotating shaft 12.
Is designed to rotate in the same direction as the rotary shaft 12 rotates clockwise in FIG. The string winding arm 16 has a first arm 17 which is substantially parallel to the vertical wall 9, and a longitudinal direction of the first arm 17 which is oriented in the front-rear direction.
The second arm 18 is provided so as to form 0 °. It should be noted that the string winding arm 16 is the rotating shaft 1
No member is projected into the movement locus of the string winding arm 16 so that the string winding arm 16 can be rotated 360 degrees together with 2.

The first arm 17 has a required number (for example, three) of cord guide rollers 20 with the axis centered in the front-back direction.
A, 20B, and 20D are rotatably provided. Further, the first arm 17 is provided with a known tension device 23. The tension device 23 includes a swing arm 24 that is swingably provided on the first arm 17 via a pivot 25 having an axis centered in the front-rear direction, and the swing arm 24.
3 has an urging mechanism 26 including a spring or the like for urging clockwise in FIG. At the free end of the swing arm 24, a cord guide roller 20C having an axis in the front-back direction is rotatably provided. The string guide roller 20A,
Each of 20B, 20C, and 20D has a middle-high body 28 and a pair of flanges 29 provided at both ends of the body 28 via rounded portions. The length of the body 28 is several times the width of the flat string S having a width of about 20 mm in the string guide roller 20A (the reason will be described later), and in the string guide rollers 20B, 20C, 20D, Na string S
It is made slightly larger than the width of.

A bobbin holder 31, which will be described in detail below, is provided in front of the vertical wall 9 of the rotary shaft 12. As shown in FIGS. 4 and 5, the main body 32 of the bobbin holder 31, which is U-shaped in FIG. 4, is fixed to the rotary shaft 12 via a pair of brackets 33. On the front wall 32a of the main body 32, a rotary shaft 35 having an axial center in the front-rear direction is rotatably fitted via a bearing, and a bobbin fitting projection 36a is provided at the center of the rear end of the rotary shaft 35. A sandwiching disc 36 is attached. The main body 32
A sleeve 39 having a common axis with the axis of the rotary shaft 35 is movable back and forth on the rear wall 32b, but a key 39, a spline structure or the like (not shown) is used for the rear wall 32b. It is fitted so as not to rotate, and the rotary shaft 35 is rotatably fitted to this sleeve 39 via a bearing.
A bobbin fitting protrusion 36a is formed at the center of the front end of the rotary shaft 35.
A sandwiching disc 36 having is attached. With such a configuration, the bobbin fitting projection 36a is fitted into the cylindrical bobbin 41 (the string S is wound) with the front and rear ends of the shaft centered in the front-rear direction, and the rear sandwiching circle. By moving the plate 36 together with the sleeve 39 forward, the cylindrical bobbin 41 can be clamped by the front and rear clamping discs 36, and the cylindrical bobbin 41 can be rotatably attached to the main body 32.

A block 44 having a substantially rectangular shape in FIG. 6 is attached to the rear end of the sleeve 39, and a pair of step-down engaging portions 45 are formed by the block 44 and the rear end surface of the sleeve 39. A sliding body 47 having an engaging claw 46 that engages with the engaging portion 45 is attached to a guide 48 provided on the rear wall 32b of the main body 32 by an arrow M1 in FIG.
It is provided slidably in the direction of M2. The sliding body 4
7 is formed with a long hole 49 which is long in the directions of the arrows M1 and M2, and a screw 50 fixed to the rear wall 32b is fitted in the long hole 49 so that its axial center is oriented in the front-rear direction.
A spring 51 for biasing the sliding body 47 backward is attached to the screw 50.
The nut 52 for biasing the sliding body 47 forward against the force of the spring 51 is screwed into the screw 50. With such a structure, the nut 52 is loosened and the nut 52 shown in FIG.
The sleeve 39 can be moved rearward by moving the engaging claw 46 from the step-down engaging portion 45 by moving it toward the arrow M1 side. That is, the tubular bobbin 41 can be removed from the front and rear holding discs 36 by the above operation. On the other hand, after the cylindrical bobbin 41 is clamped by the clamping disc 36, the sliding body 47 is moved in the direction of the arrow M2, and the engaging claw 46 is moved.
Is engaged with the step-down engaging portion 45, and then the nut 52 is tightened, so that the cylindrical bobbin 41 can be clamped and held by the front and rear clamping disks 36.

The brake device 54 will be described in detail with reference to FIGS. 5 and 6. In the block 44,
On the side opposite to the sliding body 47, there is a pivot 5 with its axis oriented vertically.
An oscillating body 57, which is one of the constituent members of the brake device 54, is provided so as to be able to oscillate back and forth in the middle of the length through the intermediary 5 of FIG. The opposite side is an arc member 59 having the center of the rotary shaft 12 as its center. The rocking body 57 is biased by a spring 60 in a direction in which the brake piece portion 58 moves away from the rotating shaft 35. Then, the brake piece 58
The brake plate 62 is attached to the end of the rotary shaft 35 that penetrates the block 44 so as to face the. With such a configuration, the brake piece portion 58 is connected to the brake plate 6
The rotation of the rotary shaft 35 and thus the cylindrical bobbin 41 can be stopped by pressing the rotary shaft 35 against the rotary shaft 35.

The rotating shaft 12 (string winding arm 16)
The roller 64 is positioned inside the tip of the arc member 59 in the rotational direction at a position slightly before the stop, and the roller 64 is attached to the tip of the connecting rod 67 fixed to the rod 66 of the linear solenoid 65. It is rotatably provided with its axis facing forward and backward.
The main body of the linear solenoid 65 is fixed to the vertical wall 9. With such a configuration, the rotating shaft 12
When the (string winding arm 16) approaches the stop position, the rod 66 that has been protruding so far is retracted to press the roller 64 against the inner surface of the arc member 59 and the brake piece portion 58 against the brake plate 62. Thus, the rotation of the tubular bobbin 41 can be stopped. In addition,
The operation timing of the linear solenoid 65 is adjusted by using a known position sensor that detects the position of the string winding arm 16 or a counter that counts the number of rotations of the string winding arm 16.

A cord passage 70 is formed in the rotary shaft 12 in a manner orthogonal to the axis of the rotary shaft 12, that is, with both ends open on the peripheral surface of the rotary shaft 12, and the bobbin holder of the cord passage 70 is formed. A string guide roller 71 having an axis centered in the front-rear direction is provided on the rotating shaft 12 on the 31 side so as to be rotatable.

As shown in FIGS. 7 and 8, in order to convert the direction of the flat string S by 90 degrees to the corner part of the string winding arm 16, that is, the corner part of the first arm 17 and the second arm 18. , A direction changing member 73 made of a roller is provided via a support 72, and the direction changing member 73 and the string winding arm 16 (specifically, a fixing plate portion of the support 72 fixed to the string winding arm 16). ) And a string passing gap 74 are formed between the two. The direction changing member 73 is inclined at an angle of 45 ° or about 45 ° with the outer edge of the string S (the side edge on the side not facing the rear table 5B) along the longitudinal direction of the first arm 17 and the second arm 18. It has a rim 73a. The inclined edge 73a is formed by the outer edge of the roller because the direction changing member 73 is formed by the roller.

As shown in FIGS. 9 and 10, a direction changing member 77 for changing the direction of the flat string S by 90 degrees is provided at the free end of the string winding arm 16, that is, at the tip of the first arm 18. 9, a string guide groove 78 is formed on the upper surface of the direction changing member 77 in the longitudinal direction of the second arm 18, and the direction changing member is orthogonal to the string guide groove 78 in FIG. A string guide groove 78 is formed on the lower surface of 77 in FIG. The direction changing member 7
7 has an inclined edge 77a having an angle of 45 ° or approximately 45 ° with the outer edge (side edge on the side not facing the rear table 5B) of the string S along the longitudinal direction of the second arm 18. A retaining plate 80 is attached to the direction changing member 77 so as to form a string passage 79 with the inclined edge 77a.

Below the right end of the front table 5A,
A known string tying / cutting machine 82 having a string end holding tool 83, a string tying tool (not shown) and a cutter (not shown) is provided. The cord tying / cutting machine 82 is an operating mechanism (not shown) such as a cam provided on a rotary cam shaft (not shown) rotated by a cord tying / cutting machine operating motor (not shown).
The predetermined operation is performed by the.
That is, while the rotary cam shaft makes one revolution, for example, the actuating mechanism (not shown) such as a cam causes the components of the string tying / cutting machine 82 (the string end holding tool 22 and the like) to move into a position of Japanese Patent Publication No. 57-59130.
Official Gazette / Jikken 4-41047 Official Gazette / Japanese Patent Publication Sho 57-1
It can be operated in a known manner in Japanese Patent No. 3451 or the like.

The string S wound around the cylindrical bobbin 41 rotatably held by the bobbin holder 31 passes through the string guide roller 71 and the string passage 70, and then the string guide roller 20.
After being hung on A, 20B, 20C, 20D (see FIG. 3), it is hung on to hit the inclined edge 73a of the direction changing member 73 and changed in direction, and then hit on the inclined edge 77a of the direction changing member 77. It is hung and changed in direction, and is clamped by the cord end clamp 83 of the cord tying / cutting machine 82. Note that the string S is kept flat at any position.

[0020]

Next, the operation of the embodiment of the present invention will be described. When the main switch (not shown) is turned on after placing the bound object W at the set position of the bound object placement table 5, the cord winding arm 16 rotates clockwise in FIG. The string S is wound in a flat state. Then, after the string winding arm 16 rotates once less than the set number of times, the string knotting / cutting machine 82 starts a predetermined operation and then stops when the operation is completed. In that state (when the string S is cut), the string winding arm 1
The string S on the 6 side is automatically clamped by the cord end clamp 83. The cord winding arm 16 continues to rotate during that time, and when the remaining one rotation is completed, the cord winding arm 16 is moved to a predetermined position (the direction changing member 77 is bound by the stopper) (not shown). It stops at a position slightly left of the object mounting table 5). Then, just before the string winding arm 16 is stopped, the brake piece portion 58 is pressed against the brake plate 62 to prevent the string S from being excessively fed out due to the inertial rotation of the tubular bobbin 41, and the string S is It can prevent loosening. When the string S is unwound from the tubular bobbin 41, the unwinding end portion of the string S swings with the width of the tubular bobbin 41. Therefore, the widths of the string guide roller 20A and the string guide roller 71 are flat in consideration of the movement. It is made several times the width of the string S.

[0021]

[Modifications and the like] Modifications and the like will be described below. (1) The mechanism of the brake device 54 is arbitrary. (2) The direction changing member 73 may have a simple plate shape.

[0022]

According to the present invention, the following effects can be obtained by the above-described configuration. Since the bobbin holder is provided in front of the vertical wall of the rotary shaft, that is, the bobbin holder does not project to the rear of the machine frame unlike the conventional case, the installation space of the automatic binding machine is compared with the conventional one. Can be narrowed. Since the bobbin is rotatably held in the bobbin holder with the axis of the bobbin parallel to the axis of the rotating shaft, the bobbin can be straightened without changing the direction of the cord by 90 °. Since it can reach the string winding arm, it is possible to realize the smooth feeding of the string as compared with the conventional one.

[Brief description of the drawings]

FIG. 1 is a simplified front view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged view of a partial crush of a portion A in FIG.

FIG. 4 is an enlarged sectional view taken along line IV-IV of FIG. 3;

5 is an enlarged view of a part of the portion B of FIG. 4 being crushed. FIG.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;

FIG. 7 is an enlarged view of part C of FIG.

8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is an enlarged view of part D of FIG.

FIG. 10 is an arrow view of partial crushing taken along line XX of FIG.

[Explanation of symbols]

 2 machine frame 5A front table 5B rear table 6 string passage 9 vertical wall 12 rotary shaft 13 hanging plate 16 string winding arm 31 bobbin holder 41 tubular bobbin 82 string tying / cutting machine 83 string end clamp

Claims (1)

[Claims] 1. A machine frame, a vertical wall erected on a rear portion of the machine frame, a rotary shaft rotatably provided on the vertical wall with its axis oriented in the front-rear direction, and the rotary shaft. In the machine frame, a hanging plate provided so as to be rotatable relative to it so as not to rotate with it, a rear table provided under the hanging plate, and a cord passage between the rear table and the rear table are formed. A fixed front table, a substantially L-shaped string winding arm provided on the front side of the vertical wall of the rotary shaft and adapted to rotate around the rear table, and a lower side of the front table An automatic tying machine having a string tying device, a tying device, and a tying / cutting device having a cutter, wherein the free end of the tying wire winding arm faces the tying path. , The bobbin of the rotary shaft in front of the vertical wall An automatic binding machine is provided with a holder, and the bobbin is rotatably held on the bobbin holder with its axis parallel to the axis of the rotary shaft.