JP4696541B2 - Bag binding machine - Google Patents

Description

  The present invention relates to a bag tying machine for bundling a bag by overlapping both legs of a gate-type tying tool made of a plastic sheet, and more particularly to a bag tying machine for improving the feeding position accuracy of a tying tool. is there.

  The bag binding machine previously proposed by the applicant of the present application (Patent Documents 1, 2, 3, etc.) is formed by hanging the legs of a plastic sheet gate binding tool around the mouth of the bag and superimposing both legs. It is a structure in which bags are bound by caulking and crimping, and is already commercially available and generally used.

  FIG. 9 shows a binding tool used in the bag binding machine. This binding tool 1 is a belt-like member formed continuously in series, wound in a roll shape, loaded into a binding tool storage part of a bag binding machine (not shown), and the tip part thereof is a binding tool feed mechanism. Is passed through. During the binding operation, the belt-like binding tool is sequentially forwarded by the binding tool feeding mechanism (the left hand side in the drawing in FIG. 9 is the feeding direction), and the bag mouth or the gap between the pair of left and right legs 2 of the leading binding tool The neck is inserted, the bundling arm presses the leg 2 of the bundling tool 1 in the closing direction and overlaps, and a pair of caulking crimping mechanisms placed in front of the bundling arm are caulked and crimped To do. FIG. 10 shows the bag P bounded by the tying tool 1, where the leg parts 2 on both sides of the tying tool 1 cross and overlap each other, and a dowel 3 is formed in the center of the overlapping portion to join the two leg parts 2 together. ing.

  The binding device feeding mechanism of the bag binding machine includes a carrier that reciprocates back and forth, and a binding guide guide slider that can move back and forth within a certain range with respect to the carrier, and the binding arm mechanism is located at the front of the carrier. It is installed. The binding tool guide slider is provided with a T-shaped swing arm. The swing arm is engaged with the carrier at the standby position, and the binding tool guide slider and the binding arm mechanism advance together with the carrier when the carrier moves forward.

When the binding tool guide slider advances to a predetermined position in the forward travel, the tip of the swing arm of the binding tool guide slider reaches the position of the escape hole of the main body frame, and the tip of the swing arm enters the escape hole, The engagement between the carrier and the binder guide slider is released, and the binder guide slider stops (see Patent Document 1, paragraph numbers 0011 to 0013, 0019, and 0021). At this time, the mouth of the bag is inserted into both legs of the binding tool. Then, the carrier and the arm shifter of the binding arm mechanism further advance, and the arms of the binding arm mechanism push the both legs of the binding tool from the outside to overlap each other. Subsequently, a caulking mechanism disposed in front of the binding arm mechanism sandwiches the overlapped leg portions from above and below, and forms dowels on the pair of leg portions by punch pins and presses them.
Japanese Patent No. 3147006 Japanese Patent No. 3514060 Japanese Unexamined Patent Publication No. 2001-130515

  In a bag binding machine that binds the bag by overlapping and caulking the legs of a plastic sheet gate binding tool, the positional relationship between the binding tool hung on the bag by the binding tool feeding mechanism and the caulking mechanism is accurate. Need to control. However, a certain amount of error is inevitable in the size and position of the parts constituting the binder feed mechanism and the escape holes formed in the main body frame, and the forward end position of the binder guide slider of the binder feed mechanism varies. If the deviation from the specified forward end position is greater than the tolerance, the dowel forming position by the caulking mechanism is greatly deviated forward or backward from the specified position, resulting in poor crimping of the binding tool, or simple coupling. There is a risk of losing.

  Therefore, there is a technical problem to be solved in order to eliminate the variation in the forward end position of the binding tool feeding mechanism and stabilize the binding performance, and the present invention aims to solve the above problem. To do.

The present invention is proposed in order to achieve the above-mentioned object, and the invention according to claim 1 holds the portal tie to advance and hangs the pair of legs of the tie to the converging portion of the bag. The binding tool feed mechanism, the binding arm mechanism that closes and overlaps the pair of leg portions of the binding tool that is hung on the bag by the binding tool feed mechanism, and the pair of leg portions of the overlapped binding tool are crimped together. to Ri bag tying machine der provided with a caulking mechanism, a swing arm provided on the tie feed mechanism, the tip portion of the swing arm forms a clearance hole for engaging the base frame for supporting the tie feed mechanism, bundling in the forward stroke of the tool feed mechanism, meet configured bag tying machine as engaged with the swing arm escapes the hole binder feeding mechanism stops advancing,
In the bag binding machine , the stopper plate formed with the relief hole is attached to the base frame so that the front and rear positions thereof can be adjusted, and the front and rear positions of the stopper plates are adjusted to adjust the forward end position of the binding tool feeding mechanism . ,
The front end of the central lateral side of the stopper plate is bent downward, and the bent portion projects to the lower surface side through a slot formed in the base frame,
A bracket for fixing the stopper plate is fixed behind the slot in the base frame. The bracket and the bent portion of the stopper plate are opposed to each other, and a spacer is interposed in the female screw hole formed in the bracket. A bag binding machine characterized in that it is fixed so that it can be finely adjusted,
And the invention of claim 2 forms a bolt hole in the bent portion and inserts the bolt, and is fixed to the female screw hole formed in the bracket with a spacer so that it can be finely adjusted. 2. The bag binding machine according to claim 1, wherein the spacer is a washer .

The bag binding machine of the present invention forms a relief hole in the stopper plate separate from the base frame of the bag binding machine to engage the swing arm of the binding tool feeding mechanism and stop the advancement of the binding tool feeding mechanism. Since the front / rear position of the stopper plate can be adjusted with respect to the frame, the front / rear position of the stopper plate can be changed to adjust the forward end position of the binding tool feeding mechanism. Therefore, it is possible to eliminate the possibility of poor crimping due to variations in the forward end position of the binding tool feeding mechanism due to dimensional errors of parts and the possibility of easy disconnection, and the binding performance is stabilized.
The front end of the central horizontal side of the stopper plate is bent downward, the bent portion protrudes to the lower surface side through a slot formed in the base frame, and the stopper plate is fixed behind the slot in the base frame. The bracket is fixed, and the bracket and the bent portion of the stopper plate are opposed to each other, and are fixed to the female screw hole formed in the bracket through a spacer so that the fine adjustment is possible. The position of the clearance hole that defines the forward end position of the binder feed mechanism can be finely adjusted by shifting the front / rear position of the binder, so that the binder feed caused by the dimensions of parts such as the binder feed mechanism and assembly errors Variations in the forward end position of the mechanism can be eliminated.

  Hold the portal tie and move forward to hang the pair of legs of the tie to the converging part of the bag, and arm the pair of legs of the tie tied to the bag by the tie feed mechanism A bag binding machine having a binding arm mechanism that closes and overlaps with each other, and a caulking mechanism that crimps and crimps a pair of legs of the stacked binding tools, and includes a swing arm in the binding tool feed mechanism, A clearance hole that engages the tip of the swing arm is formed in the frame that supports the feed mechanism, and the swing arm engages with the escape hole and the binding tool feed mechanism moves forward in the forward travel of the binding tool feed mechanism. In the bag binding machine configured to stop, a stopper plate having a relief hole is attached to the frame so that the front-rear position can be adjusted. The position of the binding tool relative to the caulking mechanism can be optimally adjusted by changing the front-rear position of the stopper plate and adjusting the forward end position of the binding tool feed mechanism.

  FIG. 1 is a plan view of the bag binding machine 11, and FIG. 2 is a view showing a state in which the top cover 12 and the cutter mechanism 13 in FIG. 1 are removed. The binding tool sheet is loaded into the binding tool magazine 14 at the rear part (right in FIG. 1) shown in FIG. 1, and the leading end of the binding tool sheet is inserted to the vicinity of the front end of the binding tool feed mechanism 15 shown in FIG. . As shown in FIG. 1, a guide groove 16 is provided on the front side surface (lower side in FIG. 1) of the bag binding machine 1, and an operator grasps the mouth portion of the bag and goes to the back of the guide groove 16. When inserted, the gate lever 17 is pushed by the bag, an activation switch (not shown) is turned on, the bundling material feeding mechanism 15 moves forward, and the bundling device is attached to the mouth of the bag. A pair of leg portions of the binding tool are overlapped by the binding arm mechanism 18 provided at the front portion of the binding tool feeding mechanism 15 shown in FIG. 2, and a caulking mechanism disposed in front of the binding tool feeding mechanism 15 is shown in FIG. As shown in FIG. 10, the pair of legs 2 of the binding tool 1 are crimped.

  3 shows a state in which the upper unit (including the binding arm mechanism 18) of the binding tool feeding mechanism 15 is removed, and FIG. 4 shows the removed upper unit 20. As shown in FIG. 3, the base frame 21 of the bag binding machine 11 is provided with a carrier 22 that is slidable back and forth, and the lower slider 23 of the binding tool feeding mechanism 15 is mounted on the carrier 22, and the lower slider 23 is engaged with the carrier 22 so as to be slidable back and forth. A crank pin 24a provided on the carrier driving gear 24 is engaged with the cam groove 22a at the rear of the carrier 22, and when the carrier driving gear 24 makes one rotation, the carrier 22 reciprocates back and forth once.

  FIG. 5 shows details of the carrier 22 and the lower slider 23, and a T-shaped swing arm 25 that can be turned up and down is attached to the side edge of the lower slider 23 in the forward direction. Is provided with a wing 26 protruding on the moving path of the swing arm 25. FIG. 5 shows a state where the carrier 22 and the lower slider 23 are in the standby position. The T-type head 25a of the swing arm 25 is placed on a stopper plate 27 fixed to the base frame 21, and the wing 26 of the carrier 22 is The swing arm 25 is located on the back side of the T-type head 25a. Therefore, when the carrier 22 moves forward, the wing 26 of the carrier 22 contacts the back surface of the T-type head 25a of the swing arm 25 and pushes forward, whereby the carrier 22 and the lower slider 23 move forward together.

  A clearance hole 27a for engaging the T-type head 25a of the swing arm 25 is formed in the front part of the stopper plate 27, and the wing 26 of the carrier 22 extends from the rear side of the upper back of the T-type head 25a of the swing arm 25. As shown in FIG. 6, when the T-type head 25a of the swing arm 25 reaches the position of the escape hole 27a, the swing arm 25 rotates in the downward direction due to the rotational moment due to the pressing of the wing 26, as shown in FIG. The T-shaped head 25a is fitted into the relief hole 27a. When the bag binding machine is installed so that the base frame 21 is in a substantially horizontal state, the swing arm 25 is also rotated in the downward direction by its own weight, and the T-type head 25a is fitted in the escape hole 27a. To do. As a result, the lower slider 23 stops moving forward, and the T-type head 25a of the swing arm 25 is detached from the wing 26 of the carrier 22, and only the carrier 22 further moves forward.

  The upper unit 20 of the binding tool feeding mechanism shown in FIG. 4 is mounted on the lower slider 23, and advances and stops integrally with the lower slider 23 during the binding operation. An arm shifter 28 of the bundling arm mechanism 18 is slidably attached to the front and rear intermediate parts of the upper unit 20 so as to be slidable back and forth within a certain range. 28 are connected by a link 30.

  When the lower slider 23 and the upper unit 20 of the binding tool feeding mechanism 15 stop at the above-mentioned advance end position and the carrier 22 further advances, the left and right side walls 22b of the carrier 22 shown in FIG. 3 push the arm shifter 28 forward, By rotating the binding arm 29 in the closing direction via the link 30 shown in FIG. 4, the left and right leg portions of the binding tool (not shown) are overlapped. When the tie feeding mechanism 15 stops moving forward at a predetermined position, the tying tool is located between the upper and lower caulking plates (not shown) of the caulking mechanism 19 shown in FIG. It is pressed from above and below by the mechanism 19 and is crimped as shown in FIG.

  Next, the forward end position adjusting mechanism of the tie feeding mechanism 15 will be described. FIG. 7 is an enlarged view of the binding tool feeding mechanism shown in FIG. 3 with the lower slider 23 and the carrier 22 removed, and 31 is a check claw for the binding tool provided on the base frame 21. FIG. The stopper plate 27 is a plate having a substantially H-shaped planar shape, and has a clearance hole 27a formed on the left and right inner surfaces of the front part. The stopper plate 27 is attached to the slide guide 32 provided on the base frame 21 and can be slid back and forth. it can. The front end of the central lateral side of the H-shaped stopper plate 27 is bent downward, and the bent portion 27b protrudes to the lower surface side of the base frame 21 through a slot 21a formed in the base frame 21.

  FIG. 8 is a view of the portion shown in FIG. 7 as viewed from the lower surface side, and an L-shaped cross-section bracket 33 for fixing the stopper plate 27 is fixed behind the slot 21a of the base frame 21, The bent portion 27b of the stopper plate 27 faces the front surface of the bracket 33. A female screw hole is formed in the bracket 33, and the stopper plate 27 is fixed by inserting the bolt B into the bolt hole of the bent portion 27b of the stopper plate 27 and fastening it to the female screw hole of the bracket 33. Therefore, the front and rear positions of the stopper plate rate 27 can be finely adjusted by interposing a spacer such as a washer W between the bracket 33 and the bent portion 27b of the stopper plate 27. The base frame 21 is formed with a hole 21b that matches the escape hole 27a of the stopper plate 27, but by making the longitudinal length of the hole 21b of the base frame 21 longer than the escape hole 27a of the stopper plate 27, The hole 21b of the base frame 21 is prevented from touching the T-type head 25a of the swing arm 25 in the front / rear position adjustment range of the stopper plate 27.

  In this way, the position of the escape hole 27a that defines the forward end position of the binder feeding mechanism 15 can be finely adjusted by shifting the front and rear positions of the stopper plate 27, so the dimensions and assembly of parts such as the binder feeding mechanism can be adjusted. The variation in the forward end position of the binding tool feeding mechanism caused by the error can be eliminated.

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

The top view of a bag binding machine. The perspective view of the bag binding machine which removed the upper surface cover. The perspective view of the bag binding machine which removed the upper unit of the upper surface cover and the binding tool feed mechanism. The perspective view of the upper unit of a binding tool feed mechanism. The perspective view which shows the carrier and lower slider of a binding tool feed mechanism. The perspective view which shows the carrier and lower slider of a binding tool feed mechanism. The perspective view which shows the stopper plate of a binding tool feed mechanism. The bottom perspective view which shows the stopper plate of a binding tool feed mechanism. The top view of a binding tool. Explanatory drawing which shows the binding state of the bag by a binding tool.

Explanation of symbols

11 Bag binding machine
15 Binder feeding mechanism
18 Bundling arm mechanism
19 Caulking mechanism
20 Upper unit (Binder feed mechanism)
21 Base frame
21a Slot
22 Carrier
23 Lower slider (Binder feed mechanism)
25 Swing arm
25a T type head
26 Wing
27 Stopper plate
27a clearance hole
27b Bending part
28 Arm shifter
29 Bundling arm
30 links
31 Check jaw
32 Slide guide
33 Bracket
B bolt
W washer

Claims (2)

Hold the portal tie and move forward to hang the pair of legs of the tie to the converging part of the bag, and arm the pair of legs of the tie tied to the bag by the tie feed mechanism a bundling arm mechanism superimposable closed at, Ri bag tying machine der provided with a crimping mechanism for crimping by caulking a pair of leg portions of the closure superimposed, a swing arm provided on the tie feed mechanism, tie A clearance hole that engages the tip of the swing arm is formed in the base frame that supports the feeding mechanism, and the swing arm engages with the relief hole in the forward travel of the binding tool feeding mechanism to We met configured bag binding machine to stop the advance,
In the bag binding machine , the stopper plate formed with the relief hole is attached to the base frame so that the front and rear positions thereof can be adjusted, and the front and rear positions of the stopper plates are adjusted to adjust the forward end position of the binding tool feeding mechanism . ,
The front end of the central lateral side of the stopper plate is bent downward, and the bent portion projects to the lower surface side through a slot formed in the base frame,
A bracket for fixing the stopper plate is fixed behind the slot in the base frame. The bracket and the bent portion of the stopper plate are opposed to each other, and a spacer is interposed in the female screw hole formed in the bracket. A bag tying machine characterized by being fixed and finely adjustable. A bolt hole is formed in the bent portion, a bolt is inserted, and the spacer is a washer when the spacer is interposed in a female screw hole formed in the bracket so as to be finely adjustable. The bag binding machine according to claim 1.

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