JP5481722B2 - Adjusting mechanism of the clamping angle of the clamping arm - Google Patents

Description

  The present invention relates to a rotary wrapping machine and relates to a holding angle of a holding arm for holding a packaging bag, in particular, a fine adjustment mechanism.

A packaging machine in which a pair of clamping arms, which is one type of conventional rotary packaging machines, is processed in each step will be described with reference to FIG.
When the opening / closing roller 224 slides on the circumferential portion of the opening / closing disk body 227, the first holding arms (200a, 200b) and the second holding arms (201a, 201b) are arranged according to the outer peripheral shape of the opening / closing disk body 227. Is opened and closed, and both packaging bags are opened and closed.
The reference clamping angle of the first clamping arm (200a, 200b) and the second clamping arm (201a, 201b) is adjusted at the position of the width adjustment link body 226 by the adjustable adjustment disk 205.

Further, when the first clamping arms (200a, 200b) and the second clamping arms (201a, 201b) adjusted to the reference clamping angle reach the convex part of the opening / closing disc body 227, they slide on the convex part. Thus, the open / close lever 223 is rotated clockwise about the rotation shaft 223a.
Then, the second holding arms (201a, 201b) are opened and closed through a link mechanism constituted by the opening / closing lever 223, the opening / closing link body 222, the link body 221, and the width adjusting link body 226. In the clockwise rotation, the left clamping lever 209b is rotated counterclockwise about the clamping shaft 206b, and the right clamping lever 209a connected by the connecting link 208 is rotated clockwise about the clamping shaft 206a. Rotate.
For this reason, the second clamping arm 201a and the second clamping arm 201b rotate in opposite directions to increase the clamping angle of the second clamping arms 201a and 201b, thereby closing the packaging bag.
The first clamping arms (200a, 200b) have the same clamping angle as the second clamping arms 201a, 201b via the link 220.

  On the other hand, when the open / close roller 224 reaches the recess of the open / close disc 227, the open / close lever 223 that slides in the recess rotates in the opposite direction to the first clamp arms 200a and 200b and the second clamp arm 201a. , 201b becomes smaller and the packaging bag is opened.

JP 2006-131309 A

The packaging bags are processed every one or two bags, and the reference holding angle of the packaging bags is adjusted at the position of the width adjusting link body 226 by the adjusting disk 205.
That is, the reference clamping angle between the first clamping arms 200a and 200b and the second clamping arms 201a and 201b is adjusted only by the width adjustment link body 226. For this reason, the reference clamping angles of the first clamping arms 200a and 200b and the second clamping arms 201a and 201b are different from each other, and an unfavorable case may occur, for example, a wrinkle may occur in a packaging bag in heat sealing or the like.
In view of this, a mechanism is provided in which fine adjustment can be made independently of each other with respect to the reference clamping angles of the first clamping arms 200a and 200b and the second clamping arms 201a and 201b.

The packaging machine according to claim 1 of the present application is a mechanism that enables fine adjustment of the clamping angle of the first clamping arm.
The packaging machine according to claim 1 is provided with a first clamping arm having a clamping claw and a fixing claw at the end for clamping the packaging bag. The first clamping arm is set at a reference clamping angle predetermined by a reference clamping angle mechanism.
Further, this packaging machine is a rotary type, and the opening angle of the first clamping arm is changed via an opening / closing lever attached to an adjusting wheel that slides on the rotating lower opening / closing disk body to open the packaging bag. Perform closure.
And the recessed part is provided in the location of the lower opening-and-closing disc body which opens and closes a packaging bag, and the adjustment body which can be projected and retracted is attached to the recessed part. Fine adjustment is performed with respect to a preset reference clamping angle of the first clamping arm according to the positional relationship between the adjusting body and the peripheral edge of the lower opening / closing disk.
When the adjustment body is at the same height as the peripheral edge of the lower opening / closing disc body, the first clamping arm has a preset reference clamping angle, but when it is protruding or buried, the amount is Accordingly, the clamping angle of the first clamping arm is changed.

Furthermore, the packaging machine of Claim 1 has a 2nd clamping arm which equips an edge part with a clamping nail and a fixed nail | claw in order to clamp a packaging bag. That is, this packaging machine is provided with the 1st clamping arm and the 2nd clamping arm, and is processed for every 2 packaging bags. The reference clamping angle of the first clamping arm and the second clamping arm is set in advance by the same reference clamping angle mechanism. That is, the reference clamping angle of the first clamping arm and the second clamping arm is set by one reference clamping angle mechanism.
An opening / closing lever and a recess are provided on each of the first holding arm and the second holding arm with respect to the lower opening / closing disk. Then, depending on the relationship between the position of the adjusting body attached to each recess and the peripheral edge of the lower opening / closing disc body, the first holding arm and the second holding arm are respectively set with respect to a preset reference holding angle. To make fine adjustments.

According to a second aspect of the present invention, there is provided a packaging machine comprising a lever, a link body, an opening / closing link body, and an opening / closing lever as a reference holding angle mechanism for setting a reference holding angle of the first holding arm and the second holding arm. Done through.
Then, the second width adjusting link body is attached to the common rotating shaft of the link body and the opening / closing link body, and the other end portion of the second width adjusting link body is coupled to the rotatable adjusting wheel. With this rotation, the reference clamping angle of both the first clamping arm and the second clamping arm is set.

  In the present invention, fine adjustment with respect to the reference clamping angle of the clamping arm is possible. Further, the reference clamping angle of the two clamping arms can be set as the reference clamping angle of the first clamping arm and the second clamping arm by rotating the common adjusting wheel.

It is a top view of the clamping arm and link mechanism which concern on this invention. It is a right view of FIG. It is a top view of the handle for finely adjusting the holding angle of the holding arm. It is a side view which shows the attachment of the handle | steering_wheel to adjust finely. It is a top view of the clamping arm and link mechanism of a prior art.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a plan view of a clamping arm and a link mechanism. The first clamping arms 10a and 10b and the second clamping arms 11a and 11b are rotary packaging machines that sequentially perform the same process. 1A is a plan sectional view of the first clamping arms 10a and 10b, and FIG. 1B is a plan view of the second clamping arms 11a and 11b. FIG. 2 is a right side view of FIG.
Since the first clamping arm 10a and the first clamping arm 10b have the same structure, the first clamping arm 10a will be described. The structures of the two pairs of first clamping arms 10a and 10b and second clamping arms 11a and 11b are well known and will be described briefly.

The first clamping arm 10a sandwiches the packaging bag 1 with a movable claw 15b and a fixed claw 15a at the tip, and the clamping claw 15b is constantly pressed by the elastic body 14 to maintain the clamping state. .
On the other hand, when dropping the sandwiched packaging bag with the sandwiching claws 15b and the fixed claws 15a, the link body 12a is rotated and sandwiched by pressing the opening body 12 toward the center of the packaging machine with the operation lever 13. The claw 15b rotates around the rotation shaft 15c, and the fixed claw 15a and the clamping claw 15b are opened (FIG. 4).

The first clamping arm 10a is attached to a left lever 16A that can be rotated by a fixed left clamping shaft 16a, and the other first clamping arm 10b is rotatable by a fixed right clamping shaft 16b. Is attached to the right lever 16B.
Further, the first clamping arms 10a and 10b are mutually pulled by a tension spring 17, and the connecting member 18 so that the rotation directions of the left lever 16A and the right lever 16B are opposite to each other. It is linked with.
That is, the first clamping arms 10a and 10b and the second clamping arms 11a and 11b rotate in directions opposite to each other.

Next, a reference clamping angle mechanism for setting a reference clamping angle will be described.
The end of the left lever 16A is coupled to a lever 20 having an end rotatably attached to the left clamping shaft 16a by a pin 16c. The other end of the lever 20 is coupled to the end of the link body 21 so as to be rotatable by a connecting shaft 21a, and the other end of the link body 21 is rotatable by a connecting shaft 21b. The end of the opening / closing link body 22 is connected.
The other end of the opening / closing link body 22 is attached to an opening / closing lever 23 rotatably attached to the left pinching shaft 16a so as to be rotatable about the connecting shaft 22a. The link body 22 and the opening / closing lever 23 form a four-bar link.

  A width adjusting link body 26 is rotatably attached to the connecting shaft 21b, and the other end of the width adjusting link body 26 is connected to a rotatable adjusting wheel 28 via a connecting shaft 28a. It is. That is, when the adjustment wheel 28 is rotated to change the position of the connecting shaft 28a, the width adjusting link body 26, the four-bar link lever 20, the link body 21, the opening / closing link body 22 and the opening / closing lever 23 are used. It is possible to change the clamping angle of the first clamping arm 10a and the clamping angle of the first clamping arm 10b via the connecting member 18, that is, the width (reference clamping angle) for clamping the packaging bag 1. It is.

The reference clamping angle mechanism for setting the reference clamping angle is the adjustment wheel 28, the width adjustment link body 26, and the four-bar link (the lever 20, the link body 21, the opening / closing link body 22, and the opening / closing lever 23). In addition to the holding arms 10a and 10b, when a second width adjusting link body 26 described later is coupled to the adjusting wheel 28, the holding angle of the second holding arms 11a and 11b is caused by the rotation of the common adjusting wheel 28. Can also be adjusted.
The adjusting wheel 28 and the width adjusting link body 26 are respectively adjusted so that the reference holding angle adjusting mechanism of the first holding arms 10a and 10b and the second holding arms 11a and 11b can be adjusted independently. It can also be configured by providing.

  Further, as an operation of the reference clamping angle mechanism, for example, when the adjusting wheel 28 is rotated clockwise, the lever 20 of the four-bar link, that is, the left lever 16A coupled by the pin 16c is counterclockwise. When the adjusting wheel 28 is turned counterclockwise, the holding angle of the first holding arms 10a and 10b is reduced.

Next, with respect to the state where the first clamping arms 10a and 10b are set at the reference clamping angle, the present invention further includes a fine adjustment mechanism.
An opening / closing roller 24 is attached to an end of the opening / closing lever 23, and the lower opening / closing disk body (lower cam) fixed as the first clamping arms 10a, 10b rotate in each step in turn. ) 27 and slides and rotates.
The edge shape of the lower opening / closing disc body (lower cam) 27 is such that the filling angle of the first holding arms 10a and 10b is reduced when filling, the packaging bag is opened, and the first is set when heat sealing is performed. The position of the opening / closing roller 24 is determined so that the holding angle of the holding arms 10a and 10b is increased to close the packaging bag.

That is, the angle of the open / close lever 23 with the lower open / close disc body (lower cam) 27 changes depending on the position of the open / close roller 24, and the lever 20, the link body 21, the open / close link body 22 and the open / close lever 23 of the four-bar link The sandwiching angle of the first sandwiching arm 10a is changed via the connecting member 18, and the sandwiching angle of the first sandwiching arm 10b is also changed via the connecting member 18, so that the width for sandwiching the packaging bag 1 is changed. .
The position of the opening / closing roller 24, that is, the holding angle of the first holding arms 10a, 10b is not the holding angle due to the shape of the lower opening / closing disc body (lower cam) 27 as in the prior art, but the lower opening / closing circle. A location where the packaging bag of the plate body (lower cam) 27 is opened and closed can be finely adjusted via a position adjusting mechanism of the adjusting body 30 described later.

That is, the shape of the edge of the lower opening / closing disc body (lower cam) 27 is that when the filling is filled, the packaging bag is opened, so that the holding angle of the first holding arms 10a and 10b is reduced and heat sealing is performed. Since the packaging bag is closed when performing, the opening and closing lever 23 is formed in a shape corresponding to the holding angle of the first holding arms 10a and 10b in each step so as to increase the holding angle of the first holding arms 10a and 10b. The opening and closing of the packaging bag 1 is controlled via
However, the opening and closing of the first clamping arms 10a and 10b is performed based on the reference clamping angle. In the present invention, a fine adjustment mechanism is further provided for the reference clamping angle of the packaging bag.

Therefore, a fine adjustment mechanism for opening and closing the first holding arms 10a and 10b will be described.
The lower opening / closing disc body (lower cam) 27 is formed with a recess 31 corresponding to the opening / closing positions (at the time of filling and heat sealing) of the first clamping arms 10a, 10b.
The adjusting body 30 is inserted into the recess 31, and the opening / closing roller 24 has a holding angle of the first holding arms 10 a and 10 b corresponding to the contact position of the adjusting body 30. In other words, the first clamping arm 10a depends on whether the opening / closing roller 24 abuts on the same surface as the lower opening / closing disc body (lower cam) 27, a depression surface, or a projection surface. The holding angle of 10b is determined.

Therefore, the position adjusting mechanism of the adjusting body 30 will be described with reference to FIG. 3 (planar) and FIG. 4 (side).
A pressing body 35 is attached to the handle shaft 34, and a bearing body 37 is attached to the end of the handle shaft 34. An L-shaped adjustment plate 36 is fitted on the handle shaft 34 adjacent to the pressing plate 35, and an elastic body 38 is fitted between the adjustment plate 36 and the bearing body 37. The elastic force is always acting between the adjusting plate 36 and the bearing body 37. The adjustment plate 36 can be rotated by a rotation shaft 36 a, and an adjustment body 30 is attached to an end of the adjustment plate 36.

When the handle 33 is rotated clockwise, the distance between the pressing plate 35 and the bearing body 37 is shortened, the elastic force of the elastic body 38 acts, and the adjustment plate 36 is rotated clockwise by the rotation shaft 36a. As a result, the adjusting body 30 moves in the protruding direction from the lower opening / closing disk body (lower cam) 27.
By this operation, the opening / closing roller 24 contacts the adjusting body 30 protruding from the lower opening / closing disk body (lower cam) 27, and the left lever 16A is counterclockwise and the right lever 16B is clockwise through the opening / closing lever 23. The holding angle of the first holding arms 10a and 10b is increased. That is, this increasing clamping angle is a “finely adjusted clamping angle” with respect to the reference clamping angle.

On the other hand, when the handle 33 is reversed, the adjusting plate 405 b is rotated counterclockwise, and the adjusting body 30 moves in the center direction of the lower opening / closing disc body (lower cam) 27. In other words, the opening / closing roller 24 contacts the lower opening / closing disk body (lower cam) 27 with a recessed surface.
By this operation, the left lever 16A can be rotated clockwise, the right lever 16B can be rotated counterclockwise, and fine adjustment can be made to decrease the holding angle of the first holding arms 10a and 10b.

Next, the mechanism that constitutes the second clamping arms 11a and 11b will be described. The second clamping arms 11a and 11b are the same as the mechanisms of the first clamping arms 10a and 10b, and the same acting members include The same symbol is attached.
The adjustment of the reference clamping angle of the second clamping arms 11a and 11b is the same as the mechanism of the first clamping arms 10a and 10b, and is performed by turning the adjustment wheel 28. That is, the adjustment of the reference clamping angle of the first clamping arms 10a, 10b and the second clamping arms 11a, 11b is changed by rotation of the common adjustment wheel 28, and the independent width adjustment link body 26 and width adjustment link body. This is done through the different four-bar links at 26 positions.

On the other hand, an opening / closing roller 24 and an opening / closing roller 24a are provided corresponding to each of the first holding arms 10a, 10b and the second holding arms 11a, 11b, and the opening / closing roller 24a for the second holding arms 11a, 11b is: It slides on an upper opening / closing disk (upper cam) 27 a disposed on the lower opening / closing disk (lower cam) 27. The upper opening / closing disk (upper cam) 27a is provided with an adjusting body 30 whose position can be adjusted.
The upper opening / closing disk body 27a and the lower opening / closing disk body 27 are provided in different positions where the first clamping arms 10a, 10b and the second clamping arms 11a, 11b are opened and closed, and the respective clamping angles. This is to make it possible to make fine adjustments.

As described above, the two pairs of packaging bags including the first clamping arms 10a and 10b and the second clamping arms 11a and 11b are processed by the first clamping arm (10a 10b) and the second holding arm (11a, 11b) are set with a common adjusting wheel 28, and the fine adjustment of each holding angle is performed on the packaging bag in the lower opening / closing disk (27). It adjusts with the amount of protrusions and depressions with respect to the edge part of the lower opening / closing disc body (27) of the adjusting body 30 provided at the location to be opened and the location to be heat sealed.
It should be noted that the clamping claws 15b and the fixing claws 15a attached to the first clamping arms 10a and 10b, the second clamping arms 11a and 11b, the detaching method of the packaging bag 1, and the like are not limited to those of the above mechanism. Not too long.

10a, 10b 1st clamping arm 11a, 11b 2nd clamping arm 15a Fixed claw 15b Holding claw 16A Left lever 16B Right lever 18 Connecting member 20 Lever 21 Link body 22 Opening / closing link body 23 Opening / closing lever 26 Width adjusting link body 27 Lower opening / closing circle Plate body 27a Upper opening / closing disk body 28 Adjustment wheel 30 Adjustment body

Claims (2)

In order to sandwich the packaging bag, a first clamping arm provided with a clamping claw and a fixing claw at the end,
The first clamping arm is set to a reference clamping angle predetermined by a reference clamping angle mechanism;
The opening and closing of the packaging bag is performed by changing the holding angle of the first holding arm via an opening / closing lever attached to the adjusting wheel that slides on the rotating lower opening / closing disk body,
A recess is provided at the location of the lower opening / closing disk that opens and closes the packaging bag,
The possible adjusting member infested in the recess, have a row a fine adjustment to the reference nip angle is preset in the first clamping arm,
In order to sandwich the packaging bag, a second clamping arm having a clamping claw and a fixing claw at the end is provided,
The first clamping arm and the second clamping arm are set to a reference clamping angle predetermined by the same reference clamping angle mechanism,
An opening / closing lever and a recess are provided in each of the first holding arm and the second holding arm with respect to the lower opening / closing disc body,
A packaging machine that performs fine adjustment with respect to the reference clamping angle set in advance of the first clamping arm and the second clamping arm by an adjusting body attached to each of the recesses. The packaging machine of claim 1 ,
As a reference clamping angle mechanism for setting a reference clamping angle of the first clamping arm and the second clamping arm, a lever, a link body, an opening / closing link body, and an opening / closing lever form a four-bar link,
A width adjusting link body is attached to a common rotating shaft of the link body and the opening / closing link body,
A packaging machine in which the other end portion of the width adjusting link body is coupled to the rotatable adjustment wheel, and the reference holding angle of the first holding arm and the second holding arm is set by rotation of the adjusting wheel.

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