JP3489433B2 - Bag binding machine safety device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a bag binding machine for binding resin bags for packaging food or the like, and more particularly, to a binding device packed in a binding machine. The present invention relates to a safety device for a bag tying machine for ensuring safety when removing a tool. 2. Description of the Related Art In order to quickly and surely bind the opening of a resin bag containing goods such as fruits and vegetables and bread, the applicant of the present application has proposed a method of binding resin plates. A bag binding machine (Japanese Patent Application No. 8-267542) for automatically fastening a tool to a converging portion of a bag has been proposed. The above-described bag binding machine is configured to automatically perform one cycle from the feeding of the binding device to the fastening thereof, and the binding portion of the bag to the guide groove for bag insertion formed from one side of the frame toward the center. Is inserted, the motor is started by the trigger lever. Then, the motor drives the tying member carrier forward from the standby position via the main gear and the cam mechanism, fits the gate-shaped tying member outside at the converging portion of the bag, and then crosses both legs of the tying member with both legs. Let
Crimping is performed with a tying tool. At the end of crimping, the tying device feed device is retracted to the standby position, and the operator pulls the tied bag down the guide groove to complete one cycle of operation. [0003] In rare cases, however, accidents may occur in which the tying tool does not come off the punch of the crimping device or the clogging device is clogged for some reason. At this time, the cover provided in the crimping device built-in part must be opened to remove the tying tool, but if the operator accidentally touches the trigger lever near the crimping device when removing the tying device, the motor starts up. As a result, there is a risk that a finger may be pinched between the feeding device and the crimping device, or the finger may be damaged by a cutter device that cuts off the upper surplus portion of the bag. [0004] Therefore, there arises a technical problem to be solved in order to ensure safety during the operation of removing the binding device, and an object of the present invention is to solve the above problem. SUMMARY OF THE INVENTION The present invention proposes to achieve the above-mentioned object, and externally fits a connecting-type tying member which is a gate-shaped flat plate made of synthetic resin to a converging portion of a bag. A tying device feeding device, and a tying device that presses and intersects both legs of the tying device in the closing direction and crosses or crimps the two legs, and rotates the trigger lever for one cycle. A bag binding machine that performs a binding operation, wherein in the bag binding machine provided with a flap lid that can be opened and closed at a binding device built-in portion of an outer casing, a stopper portion that regulates rotation of a trigger lever is provided on the flap lid. When the flap lid is opened, the stopper advances into the rotation path of the trigger lever to prevent the rotation of the trigger lever, and when the flap lid is closed, the stopper retracts from the rotation path of the trigger lever and triggers. An object of the present invention is to provide a safety device for a bag binding machine configured to be able to rotate a gulever. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a bag binding machine 1, and a right side is a binding tool magazine section 2, which accommodates a roll of a binding tool connected in a belt shape. A flat L-shaped guide groove 4 is formed in the table portion 3 projecting leftward from the binder magazine portion 2 to the left from the front left / right intermediate portion and then refracting leftward. Guide groove 4 in table part 3
Has a built-in tying device feeder 5 on the right and a crimping device 6 on the left
Is built-in. [0007] A cutter device 7 is disposed behind the crimping device 6, and an arm portion 7a rotatably pivotally mounted on the upper surface of the table portion 3 is rotated to the front side so that the front guide groove 7b is moved to the table. If it matches the guide groove 4 of the part 3, a cutter blade (not shown) that slides back and forth in the arm part 7a in conjunction with the bundling operation cuts the upper surplus part of the bound bag. [0008] Feeding device 5, crimping device 6, and cutter device 7
Is driven by one motor (not shown) via a reduction gear mechanism, a cam and a link mechanism. A main trigger lever 8 is pivotally mounted on the left side of the guide groove 4, and the leading end of the main trigger lever 8 extends rightward and crosses the guide groove 4, converges at the opening of the bag and guides the guide groove 4. When inserted into the back of
The main trigger lever 8 is rotated by being pushed by the bag, and the table portion 3 is rotated.
Then, a trigger switch (not shown) is turned on to start the motor. As shown in FIG. 2, the tying member 9 is a substantially gate-shaped resin flat plate, and a retaining claw portion 11 is provided at the inner base of the left and right legs 10 in the form of an internal gear. Both legs 1
0 has a hole 12 for engaging a pin of an arm of the feeding device 5 described later, and a groove 13 extending from an outer surface to an inner front is provided at a distal end portion, and a hook portion 14 is formed. . Then, a roll of an integrally formed product in which a number of binding tools 9 are connected in a line in a belt shape is loaded into the binding tool magazine 2 of the bag binding machine 1. FIG. 3 shows the arrangement of the feeding device 5 and the crimping device 6. As shown in FIG. 3, the carrier 16 is engaged with a carrier guide 15 provided on the base of the bag binding machine 1 so as to be slidable back and forth. 16 advances the binding device 6 toward the crimping device 6 and externally fits the binding device 9 to the bag, and the crimping device 6 fastens the binding device 9 attached to the bag. A tying member guide 17 mounted on a carrier 16 of the feeder 5 so as to be slidable back and forth comprises an upper case and a lower case, and the gap between the upper case and the lower case has a middle height (a shape in cross section). It is a tie passage. A binding device table 18 similar in shape to the binding device 9 is formed at the front part (left side in the figure) of the binding device guide 17, and the binding device 9 supplied forward through the binding device passage is exposed on the binding device table 18. A pair of left and right C-shaped binding arms 19 are coaxially pivoted behind the binding tool table 18.
The arm shifter 20 and the binding arm 19 slidable back and forth are connected by a link 21. A vertical pin 22 protrudes from the distal end of the binding arm 19 and engages with the holes 12 on both sides of the binding tool 9 shown in FIG. A pin 17 a fixed to the tying member guide 17 is engaged with a groove 20 a provided in the arm shifter 20. A large-diameter main gear 23 is provided below the carrier 16.
Are arranged, and a crank roller 24 provided near the outer edge of the main gear 23 is provided with a cam groove 16 a formed in the rear portion of the carrier 16.
And the main gear 23 has a plurality of stages of reduction gears (not shown).
Through a motor. Although not shown, a known feed claw mechanism (not shown) using a swinging claw is interposed between the carrier 16 and the tying guide 17, and the feed is pivotally attached to the tying guide 17. The pawl engages the carrier 16 and the tying guide 17 is pushed by the carrier 16 and advances with the carrier 16. When the tying member guide 17 comes into contact with the stopper and stops after a certain distance, the feed claw is separated from the carrier 16 and the carrier 16 and the arm shifter 20 are moved.
Is further advanced, and the pair of left and right binding arms 19 are pushed by the arm shifter 20 and rotate in the closing direction. A disk 25 provided with a notch 25a is fitted on the shaft of the main gear 23, and the light emitting portion and the light receiving portion of the photo interrupter 26 fixed to a frame (not shown) are connected to the disk 25.
Are vertically opposed to each other with the outer edge portion of. The photo interrupter 26 is connected to a motor control unit (not shown), and the motor control unit controls the stop position of the carrier 16 based on the output of the photo interrupter 26. A flap lid 27 is pivotally attached to a front portion of the crimping device 6, and the flap lid 27 closes a lower open surface of the guide groove 4. As shown in an enlarged manner in FIG. 4, the stopper 27a for regulating the rotation of the main trigger lever 8 and the sub-trigger lever 28 is located on the left end (upper side in the figure) of the flap lid 27 when viewed from the feeder side. The center of the leading edge is formed in a concave shape so as not to hinder the insertion of the bag into the guide groove 4. The flap lid 27 is pressed against the lower surface of the table unit 3 of the bag binding machine 1 by a tension coil spring (not shown) provided between the lug 27b rising from the right rear end and the binding machine frame. The main trigger lever 8 exposed on the housing of the bag binding machine 1 and the shaft 29 of the sub trigger lever 28 below the main trigger lever 8 are exposed.
Is disposed in front of the left end of the flap lid 27, and the upper main trigger lever 8 and the sub trigger lever 28 in the housing are connected by a pin 30. The auxiliary trigger lever 28 is formed with a claw 28a projecting toward the left edge of the flap lid 27 at the initial position. The stopper 27a at the left end of the flap lid 27 and the claw 2 of the auxiliary trigger lever 28 are formed.
8a constitutes a safety device. Main trigger lever 8 and auxiliary trigger lever 28
4 rotates counterclockwise from the initial position shown in FIG. 4 when the bag is inserted, and the pin 30 pushes the lever of the trigger switch 31 to start the bag binding machine 1. The sub-trigger lever 28 is displaced about 90 ° clockwise with respect to the main trigger lever 8 in the figure, and when the bag is pressed by the main trigger lever 8, the bag is sandwiched between the main trigger lever 8 and the sub-trigger lever 28. And is pushed by the auxiliary trigger lever 28 to be surely inserted into the feed path of the binding device. When the bag is taken out, the main trigger lever 8 and the sub trigger lever 2
8 returns to the initial position by a spring (not shown). As shown in FIG. 5, the front lower end of the semicircular stopper 27a of the flap lid 27 is
The main trigger lever 8 and the auxiliary trigger lever 28 can be freely rotated when the flap lid 27 is at the initial position as shown in FIG. it can. Then, as shown in FIG. 6, when the flap lid 27 is rotated downward, the stopper portion 27a advances within the radius of rotation of the claw portion 28a of the auxiliary trigger lever 28,
When the main trigger lever 8 and the sub trigger lever 28 are to be rotated from the initial positions, the claw portions 28a
a, the main trigger lever 8 and the auxiliary trigger lever 28
Is prevented from turning. Therefore, when the flap lid 27 is opened, the trigger lever cannot be rotated, and the safety is achieved when the flap lid 27 is opened to remove the binding device jammed in the crimping device 6. The structure of the crimping device 6 is known and will not be described in detail. The base plate 32 is fixed to a lower portion of the crimping device frame 6a, and a fixed shaft 6b provided above the base plate 32.
The lower release plate 33 and the intermediate die plate 3
4 and the upper press plate 35 are pivotally connected. The three plates 33, 34, 35 are driven downward and upward by a shifter 36 that moves back and forth, and the base plate 32 on which punches are erected and the upper die plate 34 having pin holes, which are dies, form the binding device 9. The dowel is formed by pinching the intersection of both legs from above and below, and the press plate 35 above the die plate 34 is swaged from above the pin hole by swaging pins, and the release plate 33 is
Pull out the tie 9 from the punch No. 2. Next, the operation of the bag binding machine 1 in one cycle 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 4 shown in FIG. 1 while being bundled by hand, the main trigger lever 8 is pushed by the bag and pivots, as shown in FIG. The pin 30 connecting the sub-trigger lever 8 to the sub-trigger lever 28 turns on the trigger switch 31 to start the motor. When the main gear 23 is rotated by the motor,
The carrier 16 is pushed by the crank roller 24 shown in FIG.
In addition, the binding device guide 17 moves forward. Since the leading tying member of the connecting tying member 9 is engaged with the pin 22 of the tying arm 19, the leading tying member advances with the tying member guide 17 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 17 cuts the connecting part 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 9 has entered the front portion of the plate of the crimping device 6, the feed claw of the tying tool guide 17 is disengaged from the carrier 16 and the tying tool guide 17 stops, and the carrier 16 and the arm shifter 20 are further moved. Advance. As a result, a pair of left and right binding arms 19 pivotally attached to the binding device guide 17 rotate in the closing direction, and the leading binding device 9 is rotated.
And the binding member 9 is elastically deformed in a dome shape. At this time, both legs of the binding tool 9 enter between the die plate 29 and the release plate 28 of the crimping device 6. Then, the crimping device 6 caulks and tightens the tying tool 9, and after the caulking process, the feeding device 5 enters a return process.
After the carrier 16 has retreated a certain distance, the tying member guide 1
7 is engaged with the carrier 15, the tying member guide 17 is retracted integrally with the carrier 16, and it is detected by the disk 25 and the photo interrupter 26 that it has reached the standby position, and the standby shown in FIG. Stop at position. If the operator pulls the bag down after the crimping, the bag is pulled out below the table 3 of the bag binding machine 1. FIG. 7 shows a state in which the binding device 9 is fastened to the bag B. If the binding device 9 is clogged with the crimping device 6 for any reason, the flap lid 27 on the lower surface of the table 3 is opened downward to remove the binding device 9 remaining in the crimping device 6. do it. At this time, since the stopper portion 27a of the flap lid 27 prevents the rotation of the trigger levers 8 and 28 as shown in FIG. 6, even if the main trigger lever 8 is accidentally touched, the stopper portion 27a can rotate to the start position. And the binding device can be safely removed. It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope of the present invention, and it goes without saying that the present invention extends to those modifications. As described above, according to the present invention, when the binding device clogged in the binding machine is removed and the flap lid covering the binding mechanism is opened, the trigger lever is turned. Since it is configured not to be able to move, an accidental accident due to an erroneous operation of the trigger lever can be prevented, and safety is 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 front view of the binding device. FIG. 3 is a plan view showing a feeding device and a crimping device of the bag binding machine. FIG. 4 is a plan view showing a flap lid and a trigger lever. FIG. 5 is a side view showing a trigger lever and a flap lid in an initial position. FIG. 6 shows a trigger lever and an open flap lid,
(A) is a plan view and (b) is a side view. FIG. 7 is a front view showing the binding state of the bags. [Description of Signs] 1 Bag binding machine 2 Binding tool magazine 3 Table section 4 Guide groove 5 Feeding device 6 Crimping device 7 Main trigger lever 9 Binding tool 10 Leg 16 Carrier 17 Binding tool guide 18 Binding tool table 19 Binding arm 20 Arm shifter 21 Link 27 Flap lid 27a Stopper portion 28 Secondary trigger lever 28a Claw portion 29 Axis 30 Pin 31 Trigger switch

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-10-59334 (JP, A) JP-A-53-95794 (JP, A) JP-A 7-15511 (JP, U) JP-A 6-15511 51107 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65B 67/00 B65B 67/06 B65B 51/04 B65B 7/02

Claims (1)

(57) [Claims] 1. A tying tool feeding device for externally fitting a connecting tying tool, which is a synthetic resin gate-shaped flat plate, to a converging portion of a bag, and closing both legs of the tying tool. A binding device that presses and crosses in the direction to cross each other, crosses or crimps both legs, and performs a one-cycle binding operation by rotating a trigger lever. In a bag binding machine provided with a flap lid that can be opened and closed in a part where the binding device is built-in, a stopper portion that regulates rotation of a trigger lever is provided on the flap lid, and when the flap lid is opened, the stopper portion rotates the trigger lever. A safety device for a bag binding machine configured to advance into a path and prevent rotation of the trigger lever, and when the flap lid is closed, the stopper is retracted from the rotation path of the trigger lever and the trigger lever can be rotated. .