JPH11240512A - Binding tool table of bag binding machine - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent bending of a retaining claw portion of a binding device in a bag binding device in which both legs of a gate-shaped bag binding device are crossed and crimped. SOLUTION: A binding device table 22 for supporting the binding device 1 and externally fitting the binding device into a bag is provided with a claw support portion 23a for supporting a retaining claw portion 3 between both legs of the binding device 1 from below. The tying tool table 22 moves forward to fit the tying tool on the tying tool table into the bag, the tying arm crosses both legs 2 of the tying tool 1, and the crimping device crimps. Since the claw support portion 23 supports the retaining claw portion 3, even if the bag is pulled down before the process is completed, the retaining claw portion 3 does not bend and the tying member 1 has an inverted dome shape. No warping.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tying tool table for supporting a tying tool of a bag tying machine for tying resin bags for packaging food or the like, and more particularly to a tying tool table for preventing deformation of the tying tool. It is about.

[0002]

2. Description of the Related Art For example, in order to quickly and surely bind an opening of a resin bag containing goods such as fruits and vegetables and bread, the applicant of the present application has disclosed a method of binding a resin plate binding device to a bag. (Japanese Patent Application No. 8-267542) which automatically tightens the sewn portion to the convergence portion of the bag.

FIG. 5 shows a tying tool 1, which is formed by punching a resin sheet into a belt shape in which a number of tying tools 1 are connected in series. At the inner bases of the left and right legs 2 of the tying tool 1, a retaining claw 3 is provided in the form of an internal gear, and a hole 4 for engaging a pin of a feeder of the bag tying machine is provided near the outer edge. ing. Further, a hook portion 6 is formed at a distal end portion of the leg portion 2 by a groove 5 extending from the outer surface to the inner front side.

A bag binding machine (not shown) is configured to automatically perform one cycle from the feeding of the binding device 1 to the tightening. When a binding portion of the bag is inserted into the guide groove for bag insertion, a trigger is provided. The switch starts the motor. Then, the motor drives the tying device feeding device forward through the gear and the cam mechanism, and after externally fitting the tying device on the tying device table provided at the leading end of the feeding device to the converging portion of the bag, both legs of the tying device As shown in FIG. 6, the tying tool 1
A dowel D is formed and caulked at the intersection. At the end of the crimping, the tying device feeding device is retracted to the standby position, and the operator pulls out the tied bag B below the guide groove to complete one cycle of operation.

[0005] However, if the operator pulls the bag downward before the binding tool crimping step is completely completed, the retaining claw portion of the binding tool is pulled downward by the bag, as shown in FIG. The retaining claw 3 may be bent downward, or the outer edge of the tying tool 1 may have an inverted dome shape that is warped upward as shown in FIG. 8, so that attention must be paid to the timing of pulling the bag.

Therefore, regardless of the timing at which the worker pulls the bag, the tying member 1 is mounted in a normal form as shown in FIG. 6 to prevent a work error and improve the operability. Therefore, the present invention has an object to solve the above problems.

[0007]

SUMMARY OF THE INVENTION The present invention proposes to achieve the above-mentioned object, and a retaining claw is arranged in a semicircular shape at the back of a groove between both legs of a synthetic resin portal plate. A binding device supporting member provided in a bag binding machine that binds the legs by pressing the both legs of the binding device in the closing direction, crossing the legs, or crimping the bags together by using the binding device. A fork-type binder table of a bag binding machine that is provided at the front end of the binding device feeding device and supports both legs of the binding device and fits outside the convergence portion of the bag; The present invention provides a tying tool table for a bag tying machine, wherein a semicircular claw supporting portion for supporting the lower surface of the portion is formed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a bag tying machine 11, and a right side thereof is a tying tool magazine section 12 for accommodating rolls of tying tools connected in a belt shape. The table 13 protruding left from the tying tool magazine 12 has a flat surface L that refracts to the left after moving from the front left / right middle part to the back.
A letter-shaped guide groove 14 is formed. In the table section 13, a tying device feeder 15 is built in the right side of the guide groove 14, and a crimping device 16 is built in the left side.

Behind the crimping device 16, a cutter device 17 is provided.
Is arranged, and the arm portion 17a pivotally attached to the upper surface of the table portion 13 is pivoted toward the front side, so that the front guide groove 1 is formed.
When the guide groove 7b is aligned with the guide groove 14 of the table portion 13, a cutter blade (not shown) that slides back and forth in the arm portion 17a in conjunction with the binding operation cuts off the excess portion of the bound bag.

The feeding device 15, the pressure bonding device 16 and the cutter device 17 are driven by a single motor (not shown) via a reduction gear mechanism, a cam and a link mechanism. A trigger lever 18 is pivotally mounted on the left side of the guide groove 14, and the distal end of the trigger lever 18 extends rightward and crosses the guide groove 14, converges at the opening of the bag, and is Then, the trigger lever 18 is pushed by the bag and rotates, a trigger switch (not shown) in the table 13 is turned on, and the motor starts.

FIG. 2 shows the arrangement of the feeding device 15 and the crimping device 16. As shown in FIG. 2, the carrier 20 is slidably engaged with a carrier guide 19 provided on the base of the bag binding machine 11. The binding tool 1 is fitted onto the bag while the tool 20 advances toward the crimping device 16, and the crimping device 16 fastens the binding device 1 attached to the bag.

A binding device guide 21 slidably mounted on a carrier 20 of the feeder 15 is composed of an upper case and a lower case, and a gap between the upper case and the lower case has a middle height (a cross-sectional shape). It is a tie passage. A binder table 22 is formed at the front (right side in the figure) of the binder guide 21, and the binder 1 supplied forward through the binder passage is exposed on the binder table 22.

As shown in FIG. 3, the tying tool table 22 has a plan shape substantially similar to that of the tying tool 1, and a fork portion 22a projects forward (downward in FIG. 3) from both left and right sides. A claw support portion 23 for supporting the retaining claw portion 3 of the binding device 1 from below is formed in a semicircular shape at the back of the groove portion. As shown in FIG. 3B, the right side of the tying tool table 22 is higher than the left side of the tying tool table 22 when viewed from the front, so that the right leg overlaps the left leg when closing the two legs of the tying tool 1. Is formed.

As shown in FIG. 2, a pair of left and right C-shaped binding arms 24 are coaxially pivoted behind the binding device table 22, and the arm shifter 25 and the binding arm 24 are slidable forward and backward behind the binding arm 24. Are connected by a link 26. A vertical pin 27 protrudes from the distal end of the binding arm 24.
Engages. Also, a groove 25a provided in the arm shifter 25 is provided.
Is engaged with a pin 21a fixed to the binder guide 21.

Below the carrier 20, a large-diameter main gear 28
And a cam groove 20a formed in the rear portion of the carrier 20 by a crank roller 29 provided near the outer edge of the main gear 28.
And the main gear 28 has a plurality of reduction gears (not shown).
Through a motor.

Although not shown, a known feeding claw mechanism (not shown) using a swinging claw is interposed between the carrier 20 and the tying member guide 21, and the feeder is pivotally attached to the tying member guide 21. The pawl is engaged with the carrier 20, and the tying member guide 21 is pushed by the carrier 20 and advances with the carrier 20. Then, when the tying member guide 21 comes into contact with the stopper and stops after a predetermined distance, the feed claw is separated from the carrier 20 and the carrier 20 and the arm shifter 25 are moved.
Is further advanced, and the pair of left and right binding arms 24 are pushed by the arm shifter 25 and rotate in the closing direction.

A disk 30 provided with a notch 30a is fitted on the shaft of the main gear 28, and the light emitting portion and the light receiving portion of the photo interrupter 31 fixed to a frame (not shown) are connected to the disk 30.
Are vertically opposed to each other with the outer edge portion of. The photo interrupter 31 is connected to a motor control unit (not shown), and the motor control unit controls a stop position of the carrier 20 based on an output of the photo interrupter 31.

The structure of the crimping device 16 is known and will not be described in detail. However, the lower plate on which the punches are erected and the upper die plate having pin holes, which are dies, form the binding device 1. A dowel is formed by pressing the intersection of both legs 2 from above and below, and a swaging plate above the die plate is swaged from above the pin hole by a swaging pin.

Next, the operation of the bag binding machine 11 will be described. When the upper end opening of the resin bag into which fruits and vegetables are put is inserted into the guide groove 14 shown in FIG. 1 while being bundled by hand, the trigger lever 18 is pushed by the bag and pivots, and the trigger lever 18 is turned on the table 1.
The trigger switch in 3 is turned on to start the motor.

When the main gear 28 is rotated by the motor,
The carrier 20 and the binder guide 21 shown in FIG. 2 are pushed forward by the crank roller 29. Since the leading tying member of the connecting tying member 1 is engaged with the pin 27 of the tying arm 24, the leading tying member advances with the tying member guide 21 and is fitted to the converging portion of the bag. At this time, though not shown, a cutter mounted on the upper surface of the tying tool guide 21 cuts the connecting portion between the first tying tool and the next tying tool as in the conventional bag tying machine.

Then, at a position where the tying tool on the tying tool table 22 of the tying tool guide 21 has entered the front portion of the crimping device 16, the feeding claw of the tying tool guide 21 is disengaged from the carrier 20 and the tying tool guide 21 stops. Then, the carrier 20 and the arm shifter 25 further advance. Thereby, a pair of left and right binding arms 24 pivotally attached to the binding device guide 21.
Is rotated in the closing direction, and from the state shown in FIGS. 4 (a1) and (a2), as shown in FIGS. 4 (b1), (b2) and (c1) (c2), both leg portions 2 of the leading binding device 1 And the binding device 1 is elastically deformed into a dome shape.

At this time, since the retaining claw portion 3 of the binding device 1 is supported by the claw support portion 23 of the binding device table 22, the bag (not shown) in which the binding device is fitted is pulled downward. Even if it does, the retaining claw portion 3 does not bend, and the binding device 1 does not warp in an inverted dome shape.

When the state shown in FIGS. 4 (c1) and 4 (c2) is reached, the press pins of the crimping device 16 are located immediately below the two legs 2 of the binding device 1, and Form a dowel at the intersection and crimp the dowel.

Then, the upper and lower plates of the crimping device 16 open and return to the standby position, the feeding device 15 also enters a return stroke, and after the carrier 20 has retreated a predetermined distance, the guide feeding claws of the tying member guide 21 are brought into contact with the carrier 20. And the binding device guide 21 is retracted integrally with the carrier 20, and is detected by the disk 30 and the photo interrupter 31 to reach the standby position, and stops at the standby position shown in FIG. If the worker pulls the bag down after the crimping, the bag is pulled out below the table 13 of the bag binding machine 11.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the technical scope of the present invention, and it is natural that the present invention extends to those modifications.

[0026]

As described above, the binding device table of the bag binding device according to the present invention is provided with the claw support portion for supporting the lower surface of the retaining claw portion of the binding device, so that the binding device table is provided before the completion of the binding process. Even if the bag is pulled in the pulling-out direction, the retaining claw does not bend downward or the tying tool does not turn into an inverted dome shape, so that tying failure can be prevented, and operability and workability are improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a bag binding machine according to an embodiment of the present invention.

FIG. 2 is a plan view showing a feeding device and a crimping device of the bag binding machine.

FIG. 3 shows a tying tool table, (a) is a plan view,
(B) is a front view.

FIG. 4 shows a closing process of the tying tool, and (a1) and (b1).
(C1) is a plan view, and (a2), (b2), and (c2) are front views.

FIG. 5 is a plan view of the binding device.

FIG. 6 is an explanatory view showing a tying device attached to a bag in a normal shape.

FIG. 7 is a cross-sectional view showing a state in which a retaining claw of the binding device is bent downward.

FIG. 8 is an explanatory view showing a tying device attached to the bag in an inverted dome shape.

[Description of Signs] 1 Bundling Tool 2 Legs 3 Retaining Claws 4 Hole 11 Bag Bundling Machine 12 Binding Tool Magazine 13 Table 14 Guide Groove 15 Feeding Device 16 Crimping Device 17 Cutter Device 18 Trigger Lever 20 Carrier 21 Binding Tool Guide 22 Binding tool table 22a Fork section 23 Claw support section 24 Binding arm 25 Arm shifter 26 Link 27 Pin 28 Main gear

Claims (1)

[Claims] 1. A binding tool in which retaining claws are arranged in a semicircular shape at the back of a groove between both legs of a synthetic resin gate-shaped flat plate, and both legs of the binding tool are pressed in the closing direction to cross each other. A tying tool supporting member provided in a bag tying device that ties the legs together, or ties the bags by crimping, and is provided at the front end of the tying tool feeding device, and supports both legs of the tying tool. A bag characterized in that a semicircular claw support portion for supporting a lower surface of a retaining claw portion of a binding device is formed between fork portions in a fork-shaped binding device table of a bag binding device that is fitted to a convergence portion of a bag. Binding tool table of binding machine.