JPH0219232A - Size altering mechanism of carton feed apparatus - Google Patents

Abstract

PURPOSE:To control the interval between both sprockets without moving a gear train along an interlocking shaft by arranging the gear train to the cooperation shaft on one side thereof and arranging the rotary engaging part with movable sprockets thereto on the other side thereof in a state freely movable in the axial direction. CONSTITUTION:An interlocking shaft 2a has an interlocking linkage shaft part 2a on the base end side thereof and parallel shaft parts 2b formed on the leading end side thereof in a split state and, when the front and rear width dimensions of a carton D are altered, a control shaft 6a is rotated to rotate the inner gear 5c1 of an annular member 5c and each planetary gear 5b is rotated to rotate the cooperative connection shaft 2a and, with the rotation of said shaft 2a, the parallel shaft parts 2b are rotated to rotate only two drive sprockets 9, 9. As a result, only two rows of inside chains A2, A2 are advanced to change the phases of movable sprocket 4, 4 to fixed sprockets 3, 3 and only feed pawls B2, B2 are moved in the feed direction, and the front and rear width dimensions with the other feed pawls B1, B2 are changed. Therefore, the interval between both sprockets can be controlled without moving the gear train along the interlocking shaft.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention holds the rear side of a square-opened carton in an upright position by sandwiching the rear side of the carton with conveying claws set up at a constant pitch on a plurality of parallel chains. The present invention relates to a carton transport device for transporting cartons to a carton packing machine, and more particularly to a size change mechanism that adjusts the interval between transport claws in response to changes in carton size.

<Prior Art> Conventionally, as a size changing mechanism for this type of carton conveying device, a fixed sprocket and a movable sprocket are supported on a drive shaft and interlocked with the drive shaft, as disclosed in, for example, Japanese Patent Laid-Open No. 183325/1983. A bevel gear train that rotationally engages with the movable sprocket is provided on the interlocking shaft, and when the fixed sprocket and the movable sprocket are rotated at a constant speed by the rotation of these two shafts, the rotation of the bevel gear train is adjusted. As a result, the phase of the movable sprocket with respect to the fixed sprocket changes, and the front width dimension between the respective conveyor jaws installed upright on each chain is changed. Furthermore, the intermediate arm connected from the bevel gear train to the movable sprocket is changed. By moving together with the bevel gear train and the movable sprocket in the axial direction of the drive shaft and the interlocking shaft, the spacing between the two sprockets changes, thereby changing the relative left-right length between the respective conveyance claws.

<Problems to be Solved by the Invention> However, in the size changing mechanism of such a conventional carton conveying device, the intermediary arm, bevel gear train, and movable subblock h must be linked each time the left and right length of the carton is changed. Axis and drive! f! Since it is necessary to move along the lI axis,
Due to the weight of these champions, they are heavy to move and adjustment work is difficult, and if these champions are frequently moved, the meshing of the gears may become slightly out of alignment.

Also, since the movable sprocket rotates through multiple gears from this C-8gA, when trying to rotate the movable sub [''kerat] at high speed, the meshing part of the tooth width is severely worn. There is also the problem that it is difficult to respond quickly, and in order to solve this problem, it is possible to make the above gear part into an AI bus, but if it is written like this, the small opening will become difficult and it will be necessary to change the left and right dimensions of the carton. There is a problem in that it becomes difficult to carry out adjustment work corresponding to the above.

SUMMARY OF THE INVENTION In view of the conventional circumstances, it is an object of the present invention to make it possible to adjust the distance between both sprockets without moving the gear train along the interlocking shaft.

<Means for Solving the Problems> The technical means taken by the present invention to solve the above problems is to divide the drive II shaft and the interlocking shaft into two and link them to each other, and to connect one of the drive shafts with the interlocking shaft. A fixed sprocket and a movable sprocket are arranged on the other side, and a gear train is arranged on one side of the interlocking shaft, and a rotational linking part with the movable sprocket 1 is arranged on the other side so as to be movable in the axial direction of the shaft. This is a piece of music that is characterized by the fact that

According to the above-mentioned technical means, the present invention rotates one of the interlocking shafts by adjusting the rotation of the gear train, and the other interlocking shaft linked therewith is rotated, and is connected to the movable sprocket via the rotational linking part. By changing the phase of the movable sprocket relative to the fixed sprocket 1-, and largely moving the rotation linking part to the rotating sprocket and the movable sprocket along the other drive shaft and the other interlocking shaft. , which changes the spacing between both sprockets.

<Example> Hereinafter, one embodiment of the present invention will be explained based on the drawings.

In this embodiment, as shown in FIG. 1, four rows of wires are arranged, and two rows of wires (A +
Conveyance claws (B+) set up at a constant pitch on A+)
(B+) and 62 rows of die (Az) placed on the inside.
(A2) Conveyance claws (82) each set up at a constant pitch
(82) and the carton (D> supported on the rail (C)), and the outer chain (A+) (A
+ ) is a fixed sprocket (
3) In (3), the movable sprockets (4) (4) are respectively engaged with the inner sprockets (A2) (A2).

The drive shaft (1) has a horizontal drive connection shaft part (1a) on its blade side, that is, the proximal end, which connects to the drive source and has a linkage part (1") with the interlocking shaft (2), which will be described later. ) on the other side, and the sprocket support shaft lim on which the fixed sprocket 1-(3) (3) and the movable sprocket (4) (4) are supported.
b) are formed separately, and these two shaft parts (1a) (Ib)
link.

In this embodiment, a case is shown in which the drive connecting shaft (1a) and the sprocket support shaft (1b) are arranged orthogonally, and the connecting shaft (1C) is inserted between these two shafts (1a) and (lb). established,
The drive communication shaft (1a) and the connection shaft (1c) are meshed and connected by a worm gear (1d), and the connection shaft (1C) and the sprocket support shaft (1b) are meshed and connected by a spur gear (10). ing.

Further, the drive connection shaft section (1a) is a worm gear (1!1') that is separate from the worm gear (1d) that meshes with the connection shaft section (1c).
(if) is engaged with the interlocking shaft (2).

11, this worm gear (1t) constitutes a linking portion with the interlocking shaft (2).

Furthermore, two fixed sprockets (3) (3) are non-rotatably supported on the sprocket support shaft (1b) at appropriate intervals, and two fixed sprockets (3) (3) are supported between the two fixed sprockets (3) (3). movable sprockets (4) (4) rotatably supported at predetermined intervals, and two sprockets <3 located on the linking part (1C) side with the connecting shaft part (1C).
') (4) is attached so as to be movable in the axial direction of the sprocket support shaft (1b), and the two sprockets (4) and (3) located on the opposite side are attached so as not to be movable in the axial direction.

On the other hand, the interlocking shaft (2) has the drive connection shaft portion (
1a) and a gear train (5) are provided, the interlocking connecting shaft part (2a) is arranged below and parallel to the sprocket support shaft part (1b) on the tip side and will be described later. Rotation linkage part (9) (9) to movable sprocket (4) (4)
Parallel shaft portions (2b) on which are provided are separately formed, and both shaft portions (2aH2b) are meshed and connected by a spur gear (2C).

The gear train (5) has a plurality of i-star gears (5b) meshed at appropriate intervals around the outer periphery of a sun gear (5a) integrally formed on the interlocking connection shaft (2a), and each of these planetary gears (5b).
An internal gear (
5C+), and the annular member (5C)
The adjustment means (6) is linked to the outer circumferential surface of.

The adjusting means (6) can be adjusted manually or by a drive unit such as a motor.
6a) is rotated to rotate the internal gear (5c1).
In this embodiment, the adjustment shaft (6a) and the interlocking communication shaft (2a) are arranged orthogonally, and both (6a) and (2a) are connected to the worm gear (6b).
A manual operation handle (6C) is connected to one end of the adjustment shaft (6a).

and the connecting shaft part (1C) excluding the linking part (10) with the drive communication shaft part (1a) and the sprocket support shaft part (1b) of the drive shaft (1), and the interlocking part except the parallel shaft part (2b). shaft(
2) interlocking communication shaft (2a) and operating handle (6C)
The adjusting shaft (6a) of the adjusting means (6) except for the adjusting shaft (6a) of the adjusting means (6) is housed in a hollow case (7), and an appropriate amount of oil is poured into the case (7) to form an oil bath.

In addition, two driven sprockets (8) (8) are rotatably mounted on the parallel shaft portion (2b) directly below the fixed sprockets (3) (3) supported on the sprocket support shaft (1b). The two driving sprockets (9) (9) are non-rotatably supported directly below the movable sprockets t-(4) (4), and the connecting portion (2C) with the interlocking connecting shaft portion (2a). ) side two sprockets (8)
(9) is attached so as to be movable in the axial direction of the parallel shaft portion (2b), and two sprockets (9) (8) located on the opposite side are attached.
) is installed so that it cannot move in the axial direction.

Then, four rows of die (A+)(A2)(A2)(
A1) are respectively wound on a rack, and movable sprockets (4) (4)
Two drive sprockets (9) (9) linked via nitrogen (A2) (A2) are connected to the movable sprocket (4).
04).

Furthermore, the connecting portion (1e) of the sprocket support shaft (1b)
Adjustment that extends vertically from the 162 sprockets (3) and (4) located on the ) side to the two sprockets (8 and 9) located on the linking part (2C) side of the parallel shaft part (2b). By constructing the member (10), these four sprockets are connected, and by horizontally moving the adjusting member (10) manually or by a drive unit such as a motor, the four sprockets are aligned with each shaft (Ib). ) (2b).

Next, the operation of the size change ijA of such a carton conveying device will be explained.

Normally, when the drive connecting shaft (1a) of the drive shaft (1) rotates, the connecting shaft (1C) rotates via the worm gear (1d), and accordingly, the sprocket support shaft rotates via the spur gear (1e). part (1b) rotates and the fixed sprocket (3) (3
) and rotate another worm gear (1[
), the interlocking shaft (2a) of the interlocking shaft (2) rotates, and along with this, the parallel shaft (2b) rotates through the spur gear (2C).
) rotates to rotate the drive sprockets (9) (9).

At this time, the sun gear (5a) rotates as the interlocking connection shaft (2a) rotates, and the planetary gears (5b) rotate along the outer periphery of the sun gear (5a), and the internal gears (5c, ) rotate. However, since the annular member (5C) on which the internal gear (5c, ) is carved is self-locked by the worm gear (6b), each 'iti star gear (5b) rotates 5c, ), respectively.

As a result, the fixed sprockets (3) (3) and the drive sprockets (9) (9) are rotated at a constant speed, and four rows of chains (A
+ )(A2)(A2)(A1) move in the same direction, and each conveying claw (B+)(B2)(B2)(Bl)
Transfer the sandwiched carton (D).

In addition, when the front and rear width dimensions of the carton (D>) are changed, use the operation handle (6C) to rotate the adjustment 'fill (6a), and insert the 'c annular member (5C) through the worm gear (6b).
) by rotating the internal gear (5C+), each planetary gear (5b) rotates, and the connection part (2a) forming the sun gear (5a) rotates. Accordingly, the parallel shaft portion (2b) rotates, causing only the two driving sprockets (9) to rotate.

As a result, only the inner two rows of gears (A2 HΔ2) move forward, and the phase of the movable sprockets 1-(4) (4) relative to the fixed sprockets 1-(3) (3) changes, causing both blocks to move forward. ” - (A2) (Az > Conveying claw (B2) (
Only B2) moves in the transport direction and the other transport claw (B+
) (B+) and the front and rear width dimensions change.

Historically, when the left-right length dimension of the carton (D) is changed, by horizontally moving the adjustment member (10), the linking part between the sprocket support shaft (1b) and the parallel shaft part (2b) is adjusted. (le) The two sprockets (3) (4) (8) (9) located on the (2c) side are connected to the respective shafts (Ib) (2b)
and move along each of the other two sprockets (4) (3
)(9H8) changes.

As a result, the front and rear transport claws (B+ HB2) erected on the movable side bunks (A+) (A2), and the front and rear transport claws erected on the fixed side buns (A2) (A+). <8
2) The relative left and right length with ([J+) changes.

In this embodiment, the rail (C) is also configured to move in conjunction with the horizontal movement of the adjustment member (10).

Moreover, what is not shown in FIG. 4 is another embodiment of the present invention,
This item has two chains arranged, one chain (A1
) to the fixed sprocket (3), and the other chain (A2)
The movable sprocket (4) is engaged with each of the movable sprocket (4), and the link tooth width (11) that meshes with the gear part (4a) connected to the movable sprocket (4) is connected to the parallel shaft part (2) of the eight shafts (2).
b) By bearing the movable sprocket (4)
It constitutes a rotation linking part with.

In the above-mentioned embodiment, the drive communication shaft (1a) and the subroutes 1 to the support shaft (1b) are arranged orthogonally, so that both shafts (1a)
) (1b) are connected by the connecting shaft (1c), but the invention is not limited to this, and when the two shafts (1a) and (lb) are arranged parallel to each other, the drive connecting shaft (1a) is connected to two sets of spur gear transmission. As a result, the interlocking communication shaft portion (2a) of the interlocking shaft (2) and the sprocket support shaft portion (1b) are meshed and connected with each other.

<Effect of the invention> Since the present invention has the above configuration, it has the following advantages.

■ By adjusting the rotation of the gear train, one of the interlocking shafts rotates, and the other interlocking shaft linked to it rotates, changing the phase of the movable sprocket relative to the fixed sprocket through the rotational link to the movable sprocket, and driving! By moving the rotating sprocket and the rotating linking part to the movable sprocket along the other side of e@ and how to use the linking shaft, respectively,
Since the spacing between both subrockets is changed, the spacing between both subrockets can be adjusted without moving the gear train along the interlocking shaft.

Therefore, compared to conventional rails that require moving the intermediate arm, bevel gear train, and movable sprocket in response to changes in the left and right length of the carton, it is easier to move and adjust, and the oil bath This enables high-speed response.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention, and FIG.
A vertical side view taken along line I (II), Figure 3 is similar to Figure 2 (
FIG. 4 is a longitudinal sectional front view of a size changing mechanism of a car transport device showing another embodiment of the present invention. A+, A2... Chain B + s 82... Conveyance claw D... Carton 1... Drive shaft 1a...
One side of the drive shaft 1b... The other side of the drive shaft 1r... Interlocking part with the interlocking shaft 2... Interlocking shaft 2a... One side of the interlocking shaft 2b
...The other side of the interlocking shaft 3...Fixed sprocket 4.
・・Movable sprocket 5・・Gear train 9.11・・Rotation linkage part with movable sprocket Patent applicant: Tokyo Jido Machinery Works Co., Ltd.

Claims (1)

[Claims] A fixed sprocket that engages with a plurality of chains parallel to a drive shaft connected to a drive source is fixed, a movable sprocket is supported rotatably and movably in the axial direction of the drive shaft, and the interlocking shaft that interlocks with the drive shaft has the above-mentioned In a size changing mechanism for a carton conveying device, which is provided with a gear train that rotationally engages with a movable sprocket, and by adjusting the rotation of the gear train, the phase of both sprockets is changed to adjust the interval between conveying pawls provided upright on each chain, The driving shaft and the interlocking shaft are divided into two parts and interlocked with each other, and a linking part with the interlocking shaft is arranged on one side of the drive shaft, and a fixed sprocket and a movable sprocket are arranged on the other side, and a gear train is arranged on one side of the interlocking shaft. A size changing mechanism for a carton conveying device, characterized in that a rotation linking portion with a movable sprocket is disposed on the other side so as to be movable in the axial direction of the shaft.