JP2586253Y2 - General purpose binding machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention comprises a detection sensor for detecting that an object to be tied placed and transported along a worktable has passed a predetermined position, and the detection object is detected based on the detection operation of the detection sensor. The present invention relates to a general-purpose binding machine provided with a binding mechanism for performing a string binding operation on a binding object.

[0002]

2. Description of the Related Art In the general-purpose binding machine described above, conventionally, for example, as disclosed in Japanese Patent Application Laid-Open No. 4-346716,
A switch-type detection sensor is arranged below the worktable, and the contact detection piece is protruded upward from the worktable slightly closer to the binding object transfer direction than the binding operation position. The object to be bound is configured to be brought into contact with and swinging on the detection piece as the work is transferred, and the detection operation is started.

[0003]

However, in the case where a box (eg, a lunch box) made of, for example, styrofoam material is bound using a general-purpose binding machine having the above-described conventional configuration,
Since the width of such a box is long,
When such a box is placed and transferred on the worktable to perform the binding operation, when the detecting piece is brought into contact with and swinging at the leading end of the box in the transfer direction, the binding operation is started. The needle may start descending before the end of the body in the transport direction passes through the passage point of the string guiding needle, and the box body may be damaged, leaving room for improvement. An object of the present invention is to eliminate the above-mentioned disadvantages and to make it possible to smoothly bind even objects to be tied having a large width along the transfer direction and having a different width. I have.

[0004]

The feature of the present invention is that, in the general-purpose binding machine described at the beginning, the upper side of the transfer is located at the upper level and the lower side of the transfer is at the lower level at the transfer position of the object to be bound on the work table. Attaching an auxiliary table that forms a step portion located at, and arranging the detection sensor at the step portion, the detection sensor is configured to operate when the object to be bound descends the step portion, In addition, the auxiliary table is configured to be adjustable in position and fixed along the direction in which the binding object is transported.

[0005]

The object to be tied is placed and transported on the auxiliary table, and when the object to be tied goes down the step after the end of the object to be tied in the transfer direction passes through the step, it is detected when the object descends. The detection operation of the sensor starts the binding operation of the binding mechanism. In addition, since the auxiliary table is provided so as to be able to change the position and to be fixed along the direction in which the binding object is transported,
By changing and adjusting the position of the auxiliary table along the transfer direction in accordance with the width of the tied object in the transfer direction, the step portion corresponds to an appropriate position for various tied objects having different widths. Then, the binding operation can be performed.

[0006]

Therefore, even if the object to be tied has a relatively large width along the transfer direction such as a box, the cord supply member (needle) always operates after the object to be tied has passed. Therefore, even if the width of the material to be tied is different along the transfer direction, the tying of the material to be tied to the cord supply member can be prevented from being adversely affected. Moreover, even if the objects to be tied have the same width, if the position of the step is changed as described above, the position of the knot of the string can be changed so as to be located on the side surface instead of the upper surface of the box body. In addition, it is possible to improve the practical convenience such as easy loading of the objects to be tied after binding.

[0007]

Embodiments will be described below with reference to the drawings. FIG.
~ Vegetables and cut flowers using rubber strings in Fig. 6, or
1 shows a general-purpose binding machine that binds a binding target a such as a lunch box. The binding machine includes an electric motor 2 as a driving source and a knot mechanism 3 inside the box 1, and a cord storage unit 5 in which a rubber cord 4 for binding is wound and stored above the outside of the box 1. A needle 6 for supplying the rubber string 4 from the winding string storage section 5 toward the knot mechanism 3, and the object a to be bound is artificially placed along the upper work table 7 of the box body 1. It is configured to supply and supply and perform the binding operation.

As shown in FIG. 7, a pulley 9 provided on an output shaft 8 of the electric motor 2 and a pulley 13 provided on a relay shaft 12 supported by a bearing member 10 erected from the bottom of the box 1. A transmission belt 14 is stretched over and a gear 15 provided on the relay shaft 12 is engaged with a large-diameter gear 17 which is fitted around the driven shaft 16 in a freely rotatable manner, and the large-diameter gear 17 and the driven shaft 16 are engaged. And a one-turn clutch mechanism 18 is interposed therebetween. A driving crank mechanism 19 for driving the needle 6 is provided at one end of the driven shaft 16, and is linked to a driving shaft 21 of the knot mechanism 3 via a bevel gear mechanism 20 provided at the other end to branch off. It has been transmitted.
As shown in FIG. 8, the one-rotation clutch mechanism 18
A pawl clutch 22 is provided between the boss portion of the large-diameter gear 17 and the driven shaft 16, and between the driven-side meshing portion 22 a and the driving-side meshing portion 22 b of the claw clutch 22 from above in the axial direction. The locking plate 23 is inserted in a state of being pressed and pressed inward to set the clutch to a disengaged state, and the locking plate 23 is driven by an electromagnetic solenoid 25 via an operation plate 24 to thereby engage the pawl clutch 22. It is configured so that it can be set to a clutch engaged state by swinging in a direction away from the clutch. Immediately after the clutch is engaged, the electromagnetic solenoid 25 is turned off and the driven shaft 16 makes one rotation.
The inclined cam surface 2 formed on the outer peripheral surface of the driven side engagement portion 22a
6, the engagement plate 22 is engaged, and the driven side engagement portion 22a is gradually slid to the clutch disengagement side.
It is configured to rotate only rotation.

As shown in FIG. 25, the electromagnetic solenoid 25 is either a foot switch SW1 as a foot operation switch or a first limit switch SW2 as a passage detection switch disposed at the foot of an operator. By the operation, it is configured to be turned on only for a short time. These switching operations are performed by a changeover switch SW3. The first limit switch SW2 is connected to the object a
The operation piece 27 is projected upward from the worktable 7 on the upper side of the knot mechanism 3 at the passing position at the time of loading and supply, and automatically enters and operates by contact with the supplied material a to be bound. I have.

The needle 6 is provided so as to be exposed upward from the worktable 7, and is pivotally supported by a needle support case 28 projecting upward from the worktable 7 so as to be swingable about a horizontal axis X1. . That is, the rotating shaft 29 is inserted into the cylindrical frame 30 extending from the needle support case 28, and the needle 6 is connected to the rotating shaft 29. And FIG.
As shown in FIG. 7, a drive arm 32 attached to the rotation shaft 29 and the crank mechanism 19 are interlockedly connected via a push-pull rod 33 inside the needle support case 28, and the drive arm 32 is driven by the crank mechanism 19. 32, that is, the needle 6 is swingably driven over a predetermined range to supply the rubber string 4 to the knot mechanism 3. The needle 6 is urged to return to the upper standby position by a spring 34 disposed in the needle support case 28. When the one-rotation clutch mechanism 18 is in the disengaged state, the elastic force of the rubber cord 4 that extends extends. It is configured not to stop at an unstable position displaced downward from a predetermined standby position.

The winding string storage section 5 rotatably supports the string storage roll 36 with a support member 35 extending from the needle support case 28, and has a slack removing rod 37 acting on the feeding string. A pair of string guide rollers 39 and 40 are attached to the free end of the frame 30. The feeding cord is connected to the guide roller 40 located on the lower side of the cord supply by one.
After the winding, the needle 6 is supplied. Further, the rod member is pivotally supported by the support member 35 so as to be rotatable around the horizontal axis, and is pressed against the outer peripheral surface of the string storage roll 36 by its own weight to prevent excessive supply of the string storage roll 36 when the string is supplied. The brake member 60 is provided. The brake member 60 is made of a metal material, and a resin sheet S having a small friction coefficient is attached to one side surface thereof. By selectively using the state in which the S side acts, it is possible to increase the adjustment range of the brake load (see FIG. 27).

[0012] As shown in FIG.
On the surface of the band-shaped rubber plate main body 4a, streak-like irregularities 4b extending in the longitudinal direction of the string are formed to improve the sliding in the longitudinal direction, and an appropriate tension can be obtained in a state where the objects to be bound a are bundled. It is configured as follows.

The knot mechanism 3 is provided in the form of a knotter bill, holds and holds one end of a rubber string 4 and overlaps the new string supplied by the needle 6 with the held string. A string holder 42 to be set,
A knot building 43 for winding and knotting the two overlapping string portions as described above is provided, and the string holder 42 and the knot building 43 are arranged such that their respective rotational drive axes are parallel to each other. A pair of timing gears 45 and 46 for driving these are mounted on the node drive shaft 21. And knot building 43
When the knot building 43 is being wound around, the rubber string portion 4 held and held by the string holder
c and a rubber guide portion 47 for winding the rubber string portion 4d after winding the material to be tied to form a knot, and a string guide member 47 for locking and holding each of the string portions 4c and 4d at a predetermined affected position. And a moving means A for moving the string guide member 47 in a direction substantially perpendicular to the string supply direction by the needle 6 after the string winding operation by the knot building 43 is completed. More specifically, as shown in FIGS. 10 and 13, the string guide member 47 is provided in a plate shape that covers the upper part of the knot building 43, and the two string portions enter along the moving direction of the object to be bound a. A locking recess 48 is formed to fit the swing support arm 4.
Reference numeral 9 indicates that the joint drive shaft 21 is pivotally supported by the support bracket 44 so as to be swingable about an axis along the axis of the node drive shaft 21. The swing support arm 49 is urged by a spring 50 to swing toward the above-mentioned working posture, and a cam follower 52 is brought into contact with and engaged with a cam 51 provided on the knot driving shaft 21, so that the above-mentioned working posture and the knot building The moving means A is configured so as to swing and move from the position of retreating from the upper position. In this way, while being wound by the knot building 43,
When the string guide member 47 is switched to the retracted posture, the string comes off from the knot building 43, and the knot operation ends. Note that the rotation shaft 29 of the needle 6 is disposed so as to be located substantially above the rotation axis of the knot building 43 and the rotation axis of the string holder 42.
And the cord holder 42 are supplied at a substantially uniform level, and the needle support case 28 is provided in an inclined posture so that a large knot space can be taken. In the vicinity of the string guide member 47, the locking recess 48 is provided.
A string pulling member 53 that can be switched between a retaining position for closing the entrance portion and a position for opening the entrance portion is provided.
A position switching means B for switching the position 3 to the retaining position is provided. That is, as shown in FIG.
Numeral 3 is pivotally supported by a support bracket 44 so as to be swingable around an axis X2 perpendicular to the axis of the knot drive shaft 21, and is urged by a spring 54 to swing toward an open position. It is configured to contact a cam 56 provided on the drive shaft 21 to perform switching and swinging operation. FIG.
23, a knot building 43 and a string holder 42 are provided.
Between the cord holder 4 and the needle holder 6 when the needle 6 is withdrawn.
2, a string guide plate 57 for regulating the rubber string 4 having one end held at a predetermined standby position is provided.
7 is a string cutting cutter 58 provided in the string holder 42.
Are arranged so as to approach the outer end rotation trajectory at a minute interval smaller than the thickness of the rubber cord. The worktable 7 has a concave groove 7a formed along the direction in which the objects to be bound are transported. By forming the concave groove 7a, a space is formed for the thick roots of the leaves ginger and raccoon to enter, so that the stem to be bound can be passed and supplied in a horizontal posture without bending at the binding operation position. It is composed. The vertical wall surface 7b of the concave groove 7a on the string storage portion 5 side is formed in an oblique posture so that an elongated object to be tied such as a cut flower is not caught. And
When bundling a box-shaped material to be tied such as a lunch box, a step portion D in which the upper side of the transfer is located at the upper level and the lower side of the transfer is located at the lower level is provided at the transfer point of the object to be bound on the worktable 7. At the same time, the auxiliary table 63 having the insertion portion 64 of the needle 6 is attached. A second limit switch SW3 (an example of a detection sensor) is provided in the step portion D,
When the binding object a descends the stepped portion D, it comes into contact with the detection piece 65 of the second limit switch SW3 to perform a detection operation. The second limit switch SW3 is connected in parallel with the first limit switch SW2, and is configured to activate the binding mechanism 3 based on the detection operation. The auxiliary table 63 is configured to be removably fastened and fixed to the work table 7 by screws 66.
The insertion hole 67 is formed as an elongated hole so that the position can be adjusted and fixed along the transfer direction of the binding object a.
When the auxiliary base 63 is attached, the detection piece 27 of the first limit switch SW2 is covered by the auxiliary base 63, and the detection operation of the first limit switch SW2 is not erroneously performed when the second limit switch SW3 is used. It is like that. Further, a space 63a is formed on the worker side of the auxiliary table 63 so that a finger can pass when the box-shaped material to be bound is transferred while being gripped, and a vertical surface portion 63b for forming a step portion D is formed.
Is formed in an oblique attitude so that the detection operation of the second limit switch SW3 can be performed reliably. With this configuration, for example, as shown in FIG. 26, the knot can be changed to the side of the box to facilitate later handling (such as stacking).

Next, the binding operation procedure will be described. From the standby state in which the end of the rubber string 4 is sandwiched and held by the string holder 42 and the needle 6 is in the upper standby position, the tied object a is placed on the worktable 7 and supplied along the lower side of the string. When the object to be bound a comes close to the binding action point, the object to be bound a comes into contact with the detecting piece 27 or 65 of either the first limit switch SW2 or the second limit switch, and the one-rotation clutch mechanism 18 operates. Thus, the driven shaft 16 is driven one rotation.
Then, as shown in FIG. 13, the needle 6 operates to supply the rubber cord 4 toward the knot mechanism 3. At this time,
The string wound around the string guide roller 40 is further wound in a direction in which the string is wound with the operation of the needle 6, and the feeding of the string is almost stopped. Then, before the needle 6 reaches the maximum entry position, first, the string pulling member 53 switches from the open position to the retaining position. Shortly thereafter, the knot building 43 is driven to rotate, and the string portion 4c held by the string holder 42 and the string portion 4d supplied by the needle 6
Are wound together to start the knotting operation (FIG. 16). still,
At this time, the string guide member 47 is set at the operating position. Thereafter, when the needle 6 reaches the maximum rush position, the string holder 42 rotates from that point and the two string portions 4c, 4c,
4d are aligned and act to be wound by the knot building 43 (FIGS. 17 and 18). When the winding operation of the knot building 43 is completed, the string pulling member 53 switches to the open position, and the cutting cutter 58 provided on the string holder 42 approaches the string guide plate 57 to cut the string portion, After that, the string guide member 47 swings laterally from the action posture, pulls out the string wound around the knot building 43, and the knot operation ends (FIGS. 19 to 21). At this time, near the end of the winding operation of the knot building 43, the string holder 42 releases the holding of the held string portion 4c, and the needle 6 newly holds and holds the supply string portion 4d. Then, the supply cord portion 4d is cut by the cutting cutter 58. As described above, since the rubber string 4 is hardly extended from the needle 6 side, the rubber string 4 during the knot operation is in an extended state, and is held and held by the string holder 42 first when the string is cut. Since the cord portion 4c is in an extremely elongated state due to the winding action, when the sandwiched state is released, the cord portion 4c comes off from the loop portion formed by the knot building 43, and the knot of the tying string is knotted. However, it becomes a so-called single-knot state (see FIG. 24). As a result, when the rubber string 4 is removed from the tied object a, when the above-mentioned single string portion is pulled, the number of passing strings in the loop of the knot is one, and the stretching action of the rubber string and the rubber string From the sliding action by the formed irregularities 4b,
It can be easily pulled out, and after falling out of the loop, the remaining loop acts so as to spread, so that the binding state can be easily released. Moreover, since the knot building 43 and the string holder 42 are provided such that their respective drive shafts are parallel to each other, when the winding operation by the string holder 42 is performed, the two string portions positioned between the knot building 43 and The posture and the direction of rotation of the string holder 42 are substantially parallel, so that the knot operation is not hindered by being wound around the arrangement portion of the holding spring 42a (FIG. 22). In addition, by forming the streaky irregularities 4b on the surface of the rubber string 4, the holding action by the string holder 42 can be appropriately slipped in the longitudinal direction and a proper holding force can be maintained, and the holding action is smooth. Can be done. Then, when the needle is retracted to the standby position, the winding of the string is loosened from the guide roller 40, and the rubber string 4 is drawn out of the storage section 5 with the retraction operation.

As the detection sensor, a non-contact type detection sensor for a reflection type optical sensor may be used instead of the limit switch SW3.

In the claims of the utility model registration, reference numerals are written to facilitate comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a general-purpose binding machine when binding a box-shaped body.

FIG. 2 is an overall perspective view of a general-purpose binding machine.

FIG. 3 is a longitudinal sectional side view of a general-purpose binding machine when binding a box-shaped body.

FIG. 4 is a longitudinal side view of a general-purpose binding machine when binding a box-shaped body.

FIG. 5 is a longitudinal sectional side view of a general-purpose binding machine.

FIG. 6 is a longitudinal side view of a general-purpose binding machine.

FIG. 7 is a cross-sectional plan view of a general-purpose binding machine.

FIG. 8 is a side view of a part where a one-turn clutch mechanism is provided.

FIG. 9 is a side view of a needle drive system.

FIG. 10 is a side view of a drive cam mechanism of the string pulling member.

FIG. 11 is an explanatory view of the operation of the string pulling member.

FIG. 12 is a side view of the string feeding section.

FIG. 13 is a perspective view of a string guide member.

FIG. 14 is a sectional view of an elastic cord.

FIG. 15 is an explanatory diagram of a binding operation.

FIG. 16 is an explanatory diagram of a binding operation.

FIG. 17 is an explanatory view of a binding operation.

FIG. 18 is an explanatory view of a binding operation.

FIG. 19 is an explanatory view of a binding operation.

FIG. 20 is an explanatory diagram of a binding operation.

FIG. 21 is an explanatory diagram of a binding operation.

FIG. 22 is a side view of the string knot mechanism.

FIG. 23 is a diagram illustrating the operation of the string guide plate.

FIG. 24 is a perspective view of an object to be bound after the binding.

FIG. 25 is an electric circuit diagram

FIG. 26 is a perspective view showing a binding state.

FIG. 27 is a diagram showing an operation state of a brake member.

[Explanation of symbols]

 3 binding mechanism 7 work table 63 auxiliary table D stepped part SW3 detection sensor

Claims (1)

(57) [Scope of request for utility model registration] 1. A detection sensor (SW3) for detecting that an object to be tied placed and transported along a work table (7) has passed a predetermined position, and a detection operation of the detection sensor (SW3) is provided. A general-purpose tying machine comprising a tying mechanism (3) for performing a tying operation on an object to be tied based on the object to be tied. Then, an auxiliary table (63) forming a step (D) whose lower side is located at a lower level is attached, and the detection sensor (SW3) is disposed at the step (D), and the step (D) is provided. D) is configured such that the detection sensor (SW3) performs detection operation when the object to be bound descends,
In addition, a general-purpose binding machine in which the auxiliary table (63) is configured to be adjustable in position and fixed along the direction in which the binding object is transported.