JPH0681904U - General purpose binding machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a general-purpose binding machine that has a large width along the transfer direction and can bind smoothly even if it is an object to be bound with a different width. [Structure] A detection sensor is provided for detecting that an object to be bound placed and transferred along a work table 7 has passed a predetermined position, and a string is tied to the object to be bound based on the detection operation of the detection sensor. In a general-purpose binding machine equipped with a binding mechanism 3 for operating, an auxiliary member for forming a stepped portion D in which a transfer upper hand side is located at an upper level and a transfer lower hand side is located at a lower level at a portion to be bound to be transferred on a work table The table 63 is attached, and the detection sensor is provided at the step D,
The step portion D is configured so that the detection sensor operates when the object to be bound is lowered, and the auxiliary base 63 is configured to be positionally changeable and fixable along the direction of transferring the object to be bound. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is provided with a detection sensor for detecting that the object to be bound placed and transferred along the work table has passed a predetermined position, and the string is attached to the object to be bound based on the detection operation of the detection sensor. The present invention relates to a general-purpose binding machine equipped with a binding mechanism that performs a binding operation.

[0002]

[Prior art]

 In the above-mentioned general-purpose binding machine, conventionally, as disclosed in, for example, Japanese Patent Laid-Open No. 4-346716, a switch-type detection sensor is arranged on the lower side of a workbench, and a contact detection piece of the switch-type detection sensor is disposed slightly below the binding action position. The bundled object is projected upward from the work table on the upper side in the transfer direction, and as the worker manually transports the bundled object, the bundled object abuts and swings on the detection piece, and the detection operation is started. Was configured.

[0003]

[Problems to be solved by the device]

 However, when a box body (lunch box, etc.) made of foamed polystyrene material is bound using the general-purpose binding machine in the above-mentioned conventional configuration, such a box body has a long width dimension. When such a box is placed and transferred on a workbench to perform a bundling operation, when the detection piece is abutted and oscillated at the tip of the box in the transfer direction side, the bundling operation is started. The needle may start descending before the end of the box in the transfer direction passes through the passage point of the string guide needle, which may damage the box, leaving room for improvement. It is an object of the present invention to solve the above-mentioned problems and to enable a bundle having a large width along the transfer direction and having a different width to be smoothly bound without fear of damage. I am trying.

[0004]

[Means for Solving the Problems]

 The characteristic configuration of the present invention is that, in the general-purpose binding machine described at the beginning, a stepped portion in which the upper transfer side is located at an upper level and the lower transfer side is located at a lower level is provided at a transfer position of the binding object on the workbench. The auxiliary table to be formed is attached, and the detection sensor is arranged on the step portion so that the detection sensor detects and operates when the object to be bound moves down the step portion. It is configured so that it can be positionally adjusted and fixed along the direction in which the objects to be bound are transferred.

[0005]

[Action]

 When the object to be bound is lowered along the step after the object to be bound is placed and transferred along the auxiliary table and the end side in the transfer direction of the object to be bound passes through the step, the detection sensor The detection operation is performed and the binding operation of the binding mechanism is started. Moreover, since the auxiliary base is provided so that it can be positionally adjusted and fixed along the transfer direction of the object to be bound, the position of the auxiliary base along the transfer direction can be adjusted according to the width of the object to be transferred in the transfer direction. By changing and adjusting it, it is possible to perform the bundling operation with the stepped portion corresponding to an appropriate position with respect to various bound objects having different widths.

[0006]

[Effect of device]

 Therefore, even if the object to be bound has a relatively large width in the transfer direction such as a box, the position can always be adjusted so that the string supply member (needle) acts after the object to be bound passes. Thus, even when the widths of the objects to be bound are different in the transport direction, it is possible to prevent problems such as the objects to be bound colliding with the string supply member and being damaged. However, it is also possible to change the position of the knot of the string so that it is located not on the top surface of the box but on the side surface, even if the objects to be bound have the same width, by changing the position of the step as described above. Thus, it is possible to improve practical convenience such as easy loading of the objects to be bound after binding.

[0007]

【Example】

 Embodiments will be described below with reference to the drawings. 1 to 6 show a general-purpose binding machine for binding soft vegetables, cut flowers, or an object to be bound a such as a lunch box using a rubber cord. This binding machine includes an electric motor 2 as a drive source and a knotting mechanism 3 inside the box body 1, and a winding cord storage section 5 in which a binding rubber cord 4 is wound and stored above the outside of the box body 1. And a needle 6 for feeding the rubber cord 4 from the winding cord storage portion 5 toward the knotting mechanism 3, and artificially guides the object to be bound a along the upper working table 7 of the box 1. It is configured so that it is placed and supplied to perform binding operation.

As shown in FIG. 7, a pulley 9 provided on the output shaft 8 of the electric motor 2 and a pulley 13 provided on a relay shaft 12 supported by a bearing member 10 standing upright from the bottom of the box body 1. A transmission belt 14 is stretched over the gear shaft 15, and a gear 15 provided on the relay shaft 12 and a large-diameter gear 17 that is freely fitted onto the driven shaft 16 are engaged with each other. The large-diameter gear 17 and the driven shaft 16 are engaged with each other. A one-rotation clutch mechanism 18 is interposed between the two and 16. A driven crank mechanism 19 for driving the needle 6 is provided at one end of the driven shaft 16 and interlockingly connected to a drive shaft 21 of the knot mechanism 3 via a bevel gear mechanism 20 provided at the other end. It is a branch transmission. As shown in FIG. 8, the one-rotation clutch mechanism 18 is provided with a pawl clutch 22 between the boss portion of the large-diameter gear 17 and the driven shaft 16, and the driven side meshing portion of the pawl clutch 22. 22A and the drive side meshing portion 22b, the locking plate 23 is inserted from the upper side inward in the axial radial direction with a pressing force to set the clutch disengaged state. The stop plate 23 is configured to be set in a clutch engaged state by swinging the stop plate 23 in a direction in which it is separated from the pawl clutch 22 by driving an electromagnetic solenoid 25 via an operating plate 24. Immediately after the clutch is engaged, the electromagnetic solenoid 25 is turned off to operate the driven shaft 16 once, and the locking plate 23 is engaged along the inclined cam surface 26 formed on the outer peripheral surface of the driven side meshing portion 22a. Then, the driven side meshing portion 22a is gradually slid toward the clutch disengagement side and is rotationally driven only once.

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, which is arranged at the foot of an operator. It is configured to operate only for a short time by the operation of. The changeover is performed by the changeover switch SW3. The first limit switch SW2 is supplied with the operation piece 27 protruding upward from the work table 7 at the upper hand side position of the knot mechanism 3 in the passing position when the object to be bound a is placed and supplied. It is configured so that it automatically enters and operates upon contact with a.

The needle 6 is provided so as to be exposed upward from the workbench 7, and is pivotally supported by a needle support case 28 protruding upward from the workbench 7 so as to be swingable around a horizontal axis X1. . That is, the rotary shaft 29 is inserted into the cylindrical frame 30 extending from the needle support case 28, and the needle 6 is connected to the rotary shaft 29. As shown in FIG. 9, the drive mechanism 32 mounted on the rotating shaft 29 inside the needle support case 28 and the crank mechanism 19 are interlockingly connected via a push-pull rod 33 to form a crank mechanism. The drive arm 32, that is, the needle 6 is swingably driven by 19 to supply the rubber cord 4 to the knot mechanism 3. Further, the needle 6 is urged to return to the upper standby position by a spring 34 arranged in the needle support case 28, and when the one-rotation clutch mechanism 18 is in the disengaged state, The elastic force prevents the vehicle from stopping at an unstable position displaced downward from a predetermined standby position.

The winding cord storage section 5 rotatably supports the cord storage roll 36 by a support member 35 extending from the needle support case 28, and is provided with a slack eliminating rod 37 that acts on a payout cord. A pair of cord guide rollers 39, 40 are attached to the free end of the frame 30. The feeding string is wound around the guide roller 40 located on the lower side of the string supply once, and then supplied to the needle 6. An angle for pivotally supporting the support member 35 about the horizontal axis and pressing against the outer peripheral surface of the string storage roll 36 by its own weight to prevent excessive extension of the string storage roll 36 due to the string supply. A brake member 60 having a rod shape is provided. The brake member 60 is made of a metal material, and a resin sheet S having a small coefficient of friction is attached to one side surface of the brake member 60. By properly using the state in which the seat S side operates, the adjustment range of the brake load can be increased (see FIG. 27).

As shown in FIG. 14, the bundling rubber cord 4 has a strip-shaped rubber plate body 4a on the surface of which a cord-shaped unevenness 4b continuous in the longitudinal direction is formed to improve sliding in the longitudinal direction. It is configured so that an appropriate tension force can be obtained in the state where the objects to be bound a are bundled.

The knot mechanism 3 is provided in a knotter bill type, holds and holds one end of the rubber cord 4, and puts a new cord portion supplied by the needle 6 and a cord portion on the held side in an overlapping state. A string holder 42 to be set and a knotting building 43 for knotting by winding both overlapping string portions as described above are provided, and the string holder 42 and the knotting building 43 have their rotation drive axes parallel to each other. Are arranged in this way and supported by a support bracket 44, and a pair of timing gears 45, 46 for driving them are attached to the knot drive shaft 21. Then, at the position near the upper side of the knotted building 43, when the cord winding operation of the knotted building 43 is performed, that is, the rubber cord portion 4c clamped and held by the cord holder 42 and the rubber cord portion after the object to be bound is wound. 4d is wound to form a knot, a string guide member 47 is provided for locking and holding each of the string portions 4c, 4d at a predetermined actuated position, and after the knot building 43 completes the string winding operation. A moving means A for moving the string guide member 47 in a direction substantially orthogonal to the direction of supplying the string by the needle 6 is provided. More specifically, as shown in FIGS. 10 and 13, the cord inner member 47 is provided in the shape of a plate that covers the upper portion of the knot building 43, and both cord portions are arranged along the moving direction of the object to be bound a. A locking concave portion 48 that engages with the inside is formed, and is pivotally supported on the support bracket 44 by a swinging support arm 49 so as to be swingable around an axis along the axial direction of the knot drive shaft 21. The swing support arm 49 is urged by a spring 50 to swing toward the working posture, and a cam follower 52 is abuttingly engaged with a cam 51 provided on the knot drive shaft 21, so that the working posture and the knot building can be obtained. The moving means A is configured so as to swing and move so as to retract from the upper position. In this way, when the string guide member 47 is switched to the retracted posture while being wound by the knot building 43, the string comes off from the knot building 43 and the knot operation is completed. The rotation shaft 29 of the needle 6 is arranged so as to be positioned above the center of the rotation axis of the knot building 43 and the rotation axis of the string holder 42, and the rubber string 4 is connected to the knot building 43 and the string. It is supplied to the holder 42 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 secured. In the vicinity of the string guide member 47, there is provided a string pulling member 53 which can be switched between a stop position for closing the entrance part of the locking recess 48 and a position for opening the entrance part, and a string by the knot building 43. Attitude switching means B is provided for switching the string-pulling member 53 to a position that prevents the cord-pulling member 53 from coming off during the winding operation. That is, as shown in FIG. 11, the string-placing member 53 is pivotally supported on the support bracket 44 so as to be swingable around an axis X2 orthogonal to the axis of the knot drive shaft 21, and is rocked toward the open position by the spring 54. The cam followers 55 connected to each other are configured to be urged dynamically and abut on a cam 56 provided on the knot drive shaft 21 to switch and swing. In addition, as shown in FIGS. 21 to 23, between the knot building 43 and the string holder 42, the rubber string 4 whose one end is held by the string holder 42 when the needle 6 is retracted is moved to a predetermined standby position. A string guide plate 57 for restricting is provided, and the string guide plate 57 is arranged so as to approach the outer end rotation locus of the string cutting cutter 58 provided in the string holder 42 with a minute gap smaller than the thickness of the rubber string. I am doing it. A concave groove 7a is formed on the work table 7 along the transfer direction of the objects to be bound. By forming this groove 7a, a space for the thick roots of leaf ginger or lacquer to enter is formed, and the stalks to be bound do not bend at the binding operation position and pass through in a horizontal position. It is configured to be possible. The vertical wall surface 7b of the groove 7a on the side of the cord storage portion 5 is formed in a slanted posture so that an elongated bundled object such as a cut flower is not caught. When a box-shaped object to be bound a such as a lunch box is to be bound, a step in which the upper transfer side is located at the upper level and the lower transfer side is located at the lower level is located at the target object transfer location on the work table 7. The auxiliary base 63 on which the part D is formed and the insertion part 64 of the needle 6 is formed is attached. A second limit switch SW3 [an example of a detection sensor] is provided in the step portion D, and when the object a to be bound a descends the step portion D, the second limit switch SW3 comes into contact with the detection piece 65 of the second limit switch SW3. It is configured to detect. 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 thereof. The auxiliary table 63 is configured so as to be detachably tightened and fixed to the work table 7 with screws 66, and the insertion hole 67 of the screws 66 is formed into a long hole so that the position of the auxiliary object 63 can be changed and adjusted along the transfer direction of the object to be bound a. It is also configured to be fixed. When this auxiliary base 63 is attached, the detection piece 27 of the first limit switch SW2 is covered by the auxiliary base 63, and the first limit switch SW2 does not erroneously detect and operate when the second limit switch SW3 is used. Is done. On the operator side of the auxiliary table 63, a space 63a is formed for allowing a finger to pass when the box-shaped object to be bound is transferred while being gripped, and the vertical surface portion 63b where the step D is formed is in an oblique posture. It is formed so that the detection operation of the second limit switch SW3 can be reliably performed. With this configuration, as shown in, for example, the twenty-sixth aspect, the knot can be changed to the lateral side of the box to facilitate later handling (stacking, etc.).

Next, a binding operation procedure will be described. From the stand-by state in which the end of the rubber cord 4 is clamped and held by the cord holder 42 and the needle 6 is in the upper standby position, the object to be bound a is placed on the workbench 7 and supplied along the lower side of the cord. When the bound object a reaches near the binding action point, the bound object a comes into contact with the detection pieces 27, 65 of either the first limit switch SW2 or the second limit switch to operate the one-rotation clutch mechanism 18. Then, the driven shaft 16 is driven to rotate once. 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 wound in the direction in which it is further wound with the operation of the needle 6, and the unwinding of the string is almost stopped. Then, before the needle 6 reaches the maximum plunging position, first, the string pulling member 53 is switched from the open position to the retaining position. Immediately after that, the knot building 43 is rotationally driven, 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 knot operation (FIG. 16). At this time, the string guide member 47 is set to the working position. After that, when the needle 6 reaches the maximum plunging position, the cord holder 42 rotates from that point to align both the cord portions 4c and 4d and to be wound up by the knot building 43 (Fig. 17, Fig. 17). 18). Then, when the winding operation of the knot building 43 is completed, the string pulling member 53 is switched to the open posture, and the cutting cutter 58 provided in the string holder 42 approaches the string guide plate 57 to cut the string portion, Then, the string guide member 47 swings laterally from the working posture to remove the string wound around the knot building 43, and the knot operation is completed (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 clamped portion of the retained cord portion 4c, and the needle 6 newly clamps and retains the supply cord portion 4d, After that, the supply cord portion 4d is cut by the cutting cutter 58. As described above, since the rubber cord 4 is hardly paid out from the needle 6 side, the rubber cord 4 is in the extended state during the knotting operation, and when the cord is cut, the rubber cord 4 is first held and held by the cord holder 42. Since the cord portion 4c is in an extremely extended state due to the winding action, when the pinching state is released, the cord portion 4c comes off from the loop portion formed by the knot building 43, and The knot is in a so-called single knot state (see FIG. 24). As a result, when the elastic cord 4 is removed from the bound object a, if the above-mentioned elastic cord portion is pulled, there is one passing cord in the loop of the knot, and the elastic action of the elastic cord and the rubber Due to the sliding action due to the unevenness 4b formed on the string, it can be easily pulled out and removed, and after coming out of the loop, the remaining loop acts so as to spread and the bound state can be easily released. Moreover, since the knot building 43 and the string holder 42 are provided such that the drive shaft cores of the knot building 43 are parallel to each other, when the winding operation of the string holder 42 is performed, the two knots of the two string parts positioned with the knot building 43 are positioned. The posture and the rotation direction of the string holder 42 are substantially parallel to each other, and the knotting operation is not hindered by being wound around the arrangement portion of the holding spring 42a (FIG. 22). Moreover, by forming the stripe-shaped irregularities 4b on the surface of the rubber cord 4, it becomes possible for the cord holder 42 to appropriately slide in the longitudinal direction and to maintain an appropriate clamping force in the clamping action by the cord holder 42. It can be done smoothly. Then, when the needle is retracted to the standby position, the winding of the cord acts from the guide roller 40 in a loosening direction, and the rubber cord 4 is paid out from the accommodating portion 5 in accordance with the retracting operation.

As the detection sensor, a non-contact 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 provided for easy comparison with the drawings, but the invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

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

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

FIG. 3 is a vertical sectional side view of a general-purpose binding machine when binding boxes.

FIG. 4 is a vertical sectional side view of a general-purpose binding machine when binding boxes.

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

FIG. 6 is a vertical sectional side view of the 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 the one-rotation clutch mechanism arrangement portion.

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

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

FIG. 11 is an explanatory view of the action of the string bringing member.

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

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

FIG. 14 is a sectional view of a rubber cord.

FIG. 15 is an explanatory view of bundling operation

FIG. 16 is an explanatory view of bundling operation.

FIG. 17 is an explanatory view of bundling operation

FIG. 18 is an explanatory view of bundling operation

FIG. 19 is an explanatory view of bundling operation.

FIG. 20 is an explanatory view of bundling operation.

FIG. 21 is an explanatory view of bundling operation

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

FIG. 23 is an explanatory view of the operation of the string guide plate.

FIG. 24 is a perspective view of a bound object after 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 operating state of a brake member.

[Explanation of symbols]

 3 Bundling mechanism 7 Working table 63 Auxiliary table D Step section SW3 Detection sensor

Claims (1)

[Scope of utility model registration request] 1. A detection sensor (SW3) for detecting that an object to be bound placed and transferred along a workbench (7) has passed a predetermined position, and the detection operation of the detection sensor (SW3) is performed. A general-purpose binding machine equipped with a binding mechanism (3) for performing a string binding operation on an object to be bound based on a work transfer position on the workbench (7), with the upper transfer side being at an upper level. Then, an auxiliary stand (63) that forms a step portion (D) whose lower transfer side is located at a lower level is attached, and the detection sensor (SW3) is arranged on the step portion (D) to set the step portion (D). D) is configured such that the detection sensor (SW3) detects and operates when the object to be bound is lowered,
A general-purpose binding machine in which the auxiliary table (63) is configured to be positionally adjustable and fixed along the transfer direction of the objects to be bound.