JP2023058245A - Filling and packaging machine - Google Patents

Abstract

To provide a packaging machine having a structure with two rotary blades that are adjustable while being viewed from their axial directions.SOLUTION: A packaging machine 1 includes: a first frame 43 arranged in front of a body frame 10; a shaft 81 extending in a horizontal direction; and a second frame 61 swingably supported on the first frame via the shaft. Rotary blades 20, 21 are arranged so as to be rotatable in opposite directions around two shafts 22, 23 arranged at an interval in a longitudinal direction of the body frame. The second frame is arranged on the first frame so as to be movable between an operation position at which the two shafts are oriented upward and an adjustment position at which the two shafts are oriented obliquely upward in front of the body frame from the rear toward the front.SELECTED DRAWING: Figure 3

Description

The present invention relates to filling and packaging machines.

In Patent Document 1, a belt-shaped packaging material made of a laminated film containing a plastic film is continuously folded in half, and the folded packaging material is conveyed along a circumferential conveying path at predetermined intervals in the conveying direction. By opening and heat-sealing, a bag portion for containing a filler is formed between a sealed portion and an adjacent sealed portion at a certain interval, and each bag portion is filled with a filler (for example, powder). machine is known.

JP-A-2000-355303

In this type of packaging machine, a pair of rotary blades rotating in opposite directions about two parallel axes are provided, and the packaging material is passed between these rotary blades to seal the adjacent bag portions. The wrapper is cut in the area or perforated in the seal area.

In particular, in packaging machines that cut or perforate horizontally conveyed packaging material, the central axis of the rotary blade is oriented vertically. Also, the height of the rotary blade is usually set approximately at the line of sight of the user standing in front of the packaging machine. Therefore, although it is desirable to adjust the interval between the rotary blades by viewing the rotary blades from the direction of the center axis, the adjustment has to be done by viewing the rotary blades from the side. In addition, it takes a long time to adjust the interval between the rotary blades.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a packaging machine having a configuration that allows adjustment of the distance between rotary blades when viewed from the axial direction.

In order to achieve this object, the packaging machine according to an embodiment of the invention comprises:
It has two rotating blades (20, 21) rotating in opposite directions about two vertically oriented axes (22, 23), and a horizontal direction between the two rotating blades (20, 21). A packaging machine (1) comprising a cutting section (18) for cutting at regular intervals a package (105) moving to
a body frame (10) of the packaging machine (1);
a first frame (43) provided on the front surface of the body frame (10);
a shaft (81) extending horizontally along the front surface of the body frame (10);
a second frame (61) swingably supported with respect to the first frame (43) via the shaft (81);
Two rotary blades ( 20, 21),
The second frame (61) has an operating position in which the two shafts (22, 23) are directed upward, and a position in which the two shafts (22, 23) are in front of the main body frame (10) from rear to front. is provided on the first frame (43) so as to be movable between an adjustment position directed obliquely upward toward the

According to the packaging machine having such a configuration, when the rotary blades are adjusted, the gap (40) between the rotary blades (20, 21) is adjusted to the axes (22, 21) by tilting the second frame (61) to the adjustment position. 23) can be adjusted with high accuracy while viewed from an oblique direction (90) parallel to 23).

FIG. 2 is a partial front view of a continuous bag body manufactured by the packaging machine according to the embodiment of the present invention; 1 is a front view of a packaging machine according to an embodiment of the present invention; FIG. The top view which looked at the rotary blade of the cutting part from upper direction. FIG. 4 is a side view of the rotary blade support mechanism in which the second frame is set at the operating position; FIG. 4 is a side view of the rotary blade support mechanism in which the second frame is set at the adjustment position; The front view which shows a part of rotary blade support mechanism.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A packaging machine according to an embodiment of the present invention, particularly a packaging material cutting device incorporated in the packaging machine, will be described below with reference to the accompanying drawings.

[1. Packaging machine]
A packaging machine according to an embodiment of the present invention, as shown in FIG. 1, transports a packaging material 100 (see FIG. 2) made of a strip-shaped film or sheet in the horizontal direction and folds it in half along its longitudinal center line. Then, the packaging material 100 folded in half is adhered at predetermined intervals in the longitudinal direction to provide vertical seals 101 to form a bag portion 102 between the adjacent vertical seals 101, and a filling material 103 is filled in the bag portion 102. A continuous bag body 105 is formed by forming a continuous bag body 105 by providing a top seal 104 by filling and adhering the upper end opening of the bag part 102 , and cutting the continuous bag body 105 along the vertical seal 101 between the adjacent bag parts 102 . The bags containing the filling material 103 are continuously manufactured by separating into individual bags or by perforating the vertical seal 101 without separating the continuous bag 105 .

As shown in FIG. 2, the packaging machine 1 has a body frame 10. As shown in FIG. The body frame 10 is fixed to the floor of a building or the like. A packaging material supply unit 13 for supplying the packaging material 100 is arranged on the front surface of the body frame 10 (the surface that appears in FIG. 2 and faces the operator). The body frame 10 guides the packaging material 100 supplied from the packaging material supply part 13 in a substantially horizontal direction, and folds the packaging material 100 into a substantially V shape around the longitudinal center line of the packaging material 100 as a fulcrum. have The main body frame 10 is formed by heat-bonding the left and right packaging material pieces folded up by the packaging material fold-up portion 14 with a predetermined interval in the longitudinal direction, thereby forming a bag portion positioned between the vertical seals 101 and the adjacent vertical seals 101 . 102, a filling material filling part 15 for filling each bag part 102 with a filling material, a filling material supplying part 16 for feeding the filling material to the filling material filling part 15, and each filled with the filling material. A top seal portion 17 forming a top seal 104 by thermally adhering the upper end of the bag portion 102, and a continuous bag body 105 cut along the vertical seal 101 between adjacent bag portions or perforations 106 in the vertical seal 101. It supports a cutting section 18 into which the

[2. Cut part]
As shown in FIG. 3 , the cutting section 18 has a pair of rotary blades 20 and 21 arranged to face each other across a transport path 19 for the packaging material when the packaging machine 1 is viewed from above. The rotary blades 20,21 have shaft portions 24,25 extending along the shafts 22,23. Axle portions 24 and 25 have blade support portions 26 and 27 which are spaced apart by 90 degrees about axes 22 and 23 . The blade support portions 26 and 27 have blade support surfaces 28 and 29 on planes extending parallel to the shafts 22 and 23, and plate blades 30 and 31 for cutting or perforation are supported on the blade support surfaces 28 and 29. are doing. The plate blades 30 and 31 are formed with a plurality of through holes 32 and 33 at predetermined intervals in the direction of the shafts 22 and 23, and are formed on the blade supporting surfaces 28 and 29 through the through holes 32 and 33. It is fixed to the blade supporting surfaces 28, 29 by screwing bolts 36, 37 into the threaded holes 34, 35, respectively. The through-holes 32 and 33 are made slightly larger than the outer diameters of the bolts 36 and 37 in order to adjust the gap 40 between the cutting edge 38 of one rotary blade 20 and the cutting edge 39 of the other rotary blade 21 facing it. There is.

[Guide rail]
The rotary blades 20 and 21 are supported by a rotary blade support mechanism 41 shown in FIGS. The rotary blade support mechanism 41 has a pair of left and right guide rails 42 fixed to the front surface of the body frame 10 . The guide rails 42 are arranged in the vertical direction and are fixed along the front surface of the body frame 10 at regular intervals in the horizontal direction (hereinafter referred to as the “horizontal direction”).

[First frame]
The guide rail 42 supports the first frame 43 so as to be able to move up and down. The first frame 43 has a pair of frame portions (a right frame portion and a left frame portion) 44 appearing in a square or rectangular shape when viewed from the lateral direction. The left and right frame portions 44 respectively include an upper horizontal member 45 and a lower horizontal member 46 extending forward from the guide rail 42 with a space therebetween in the vertical direction (a direction parallel to this direction is hereinafter referred to as a "front-rear direction"). , a front vertical member 47 and a rear vertical member 48 connecting the upper horizontal member 45 and the lower horizontal member 46 to each other at their ends (the distal end remote from the body frame and the proximal end close to the body frame). The left and right frame portions 44 include a lower connecting member 48 that connects the left and right lower horizontal members 46 to each other, a front connecting member 49 that connects the left and right front vertical members 47 to each other, and left and right upper horizontal members 45 on the proximal end side. They are connected by an upper connecting member 50 that connects the left and right upper horizontal members 45 . An upper sliding portion (slider) 51 and a lower sliding portion (slider) 52 are fixed to upper and lower portions of the left and right frame portions 44 on the proximal end side, respectively. The vertical sliding portions 51 and 52 are connected to the guide rail 42 so as to be able to move up and down.

A through hole 53 is formed in the lower connecting member 48 so as to extend through the upper and lower surfaces of the lower connecting member 48 , and an internal screw member (nut) 54 is fixed to the through hole 53 . As shown, the central axis of the inner screw member 54 is oriented vertically.

An externally threaded member (screw shaft) 55 is screwed onto the internally threaded member 54 . A cylindrical portion 56 having no external thread is formed at the lower portion of the externally threaded member 55 , and the cylindrical portion 56 is rotatably supported by the body frame 10 via a bracket 57 . A lower end of the tubular portion 56 extends below the bracket 57, and a worm wheel 58 is fixed thereon. As shown in FIG. 6, the worm wheel 58 is meshed with a worm 60 drivingly connected to a motor (reverse rotation motor) 59 fixed to the body frame 10 . Therefore, when the motor 59 rotates forward and backward, the rotation is transmitted to the worm 60, the worm wheel 58, and the external threaded member 55, and the internal threaded member 54 and the first frame 43 holding it move to the raised position (FIG. 4) and the lowered position. position (FIG. 5).

[Second frame]
The first frame 43 supports the second frame 61 . The second frame 61 is composed of a horizontal member 62 extending in the front-rear direction in the operating state shown in FIG. Each has a vertical member 63, 64 extending upwardly from the proximal end).

The front and rear vertical members 63 and 64 are connected by a connecting member 65 at substantially middle portions. Arms 66 and 67 extending toward the other vertical members 64 and 63 are fixed to the upper ends of the vertical members 63 and 64, respectively.

Upper and lower through-holes 68, 69, 70, 71 are formed in the connecting member 65 and the arms 66, 67 respectively along the two shafts 22, 23 extending in the vertical direction with a gap in the front-rear direction in the state of FIG. The shaft 72 of one rotary blade 20 is rotatably inserted through the through holes 68 and 70 , and the shaft 73 of the other rotary blade 21 is rotatably inserted through the through holes 69 and 71 .

A through hole 74 is formed in the horizontal member 62 as an extension of the shaft 23 , and a shaft 73 is inserted through the through hole 74 . The horizontal member 62 also supports a motor 75 which is drivingly connected to the shaft 73 .

External gears 76, 77 are fixed to the shafts 70, 71 of the rotary blades 20, 21, and the external gears 76, 77 mesh with each other.

Although not shown, the first frame 43 and the second frame 61 are provided with a locking mechanism for fixing the second frame 61 in the operating state shown in FIG.

Accordingly, during operation (during manufacture of the bag body), the first frame 43 and the second frame 61 are held at the raised position shown in FIG. The force is transmitted to the external gears 77 and 76, which causes the rotating blades 20 and 21 to rotate in opposite directions, cutting the continuous bag body 105 conveyed along the conveying path 19 (see FIG. 3) at the portion of the vertical seal 101. Alternatively, the vertical seal 101 is perforated 106. - 特許庁

[3. Rotary Blade Adjustment Mechanism]
As described above, the cutting unit 18 accurately cuts or uniformly perforates the thin film or sheet packaging material at the longitudinal seal 101, so that the spacing between the rotary blades 20 and 21 is highly precise. must be adjusted to Moreover, in order to adjust the gap between the rotary blades 20 and 21 with high accuracy, it is preferable that the gap between the rotary blades 20 and 21 can be checked from a direction parallel to the shafts 22 and 23 during adjustment. Therefore, in the packaging machine 1 of the embodiment, the second frame 61 is placed in an operating position in which the shafts 22 and 23 of the rotary blades 20 and 21 are oriented vertically as shown in FIG. The shafts 22 and 23 of the rotary blades 20 and 21 are configured so as to be movable between adjustment positions inclined obliquely upward from the rear to the front.

Specifically, in the embodiment, the first frame 43 and the second frame 61 are a pair of left and right brackets 80 (one is not shown) fixed to the front connecting member 49 of the first frame 43 with a lateral space therebetween. ), a horizontal shaft 81 extending laterally and rotatably supported by a pair of brackets 80 , and an arm 82 connecting the horizontal shaft 81 and the horizontal member 62 of the second frame 61 . Also, the second frame 61 is configured such that a portion thereof (for example, the lower end of the horizontal member 62 or the proximal vertical member 65) is supported by the upper connecting member 50 of the first frame 43 in the operating position. ing. Accordingly, the second frame 61 is supported by the first frame 43 at the front and rear portions thereof in the operating position.

The second frame 61 is positioned by the positioning mechanism 85 at the adjustment position. The positioning mechanism 85 has a support portion 86 projecting forward from the front connecting member 49 of the first frame 43 and a supported portion 87 provided on the horizontal member 62 of the second frame 61 . In the embodiment, a screw hole 88 is formed in the vertical direction at a portion (part of the support portion 86) facing the supported portion 87 at the adjustment position so that the tilt angle of the second frame 61 can be adjusted. A screw (bolt) 89 is also screwed into the screw hole 88 , and the head of the screw 89 is configured to support the supported portion 87 of the second frame 61 .

[4. Rotary blade adjustment]
According to the cutting unit 18 having the above configuration, when adjusting the rotary blades 20 and 21, the motor 59 is driven to move the first frame 43 and the second frame 61 from the raised position (FIG. 4) to the lowered position (FIG. 4). 5). Next, the locking mechanism is released to rotatably release the second frame 61 from the first frame 43, and the second frame 61 is held and tilted from the operating position to the adjusting position. The inclination angle of the second frame 61 can be adjusted by manipulating the height of the screw 89 according to the physique of the operator and the work environment.

Therefore, as shown in FIG. 5, the operator OP views the gap 40 between the rotary blades 20 and 21 from an obliquely upward direction 90 parallel to the shafts 22 and 23, and the plate blades 30 and 31 of the rotary blades 20 and 21 (particularly, , cutting edge 38, 39 or cutting surface) can be adjusted with high accuracy.

In the above explanation, the term "horizontal direction" is used, but it should be understood that this term includes not only a completely horizontal direction but also a slightly inclined direction with respect to the completely horizontal direction. is. Similarly, the term "vertical direction" should be understood to include not only a completely vertical direction (the direction of gravity) but also a direction slightly inclined with respect to the direction of gravity.

18: Cutting units 20, 21: Rotary blades 22, 23: Shaft 41: Rotary blade support mechanism 43: First frame 61: Second frame 85: Positioning mechanism

Claims (3)

It has two rotating blades (20, 21) rotating in opposite directions about two vertically oriented axes (22, 23), and a horizontal direction between the two rotating blades (20, 21). A packaging machine (1) comprising a cutting section (18) for cutting a package (105) moving to the above with the two rotary blades (20, 21),
a body frame (10) of the packaging machine (1);
a first frame (43) provided on the front surface of the body frame (10);
a shaft (81) extending horizontally along the front surface of the body frame (10);
a second frame (61) swingably supported with respect to the first frame (43) via the shaft (81);
Two rotary blades ( 20, 21),
The second frame (61) has an operating position in which the two shafts (22, 23) are directed upward, and a position in which the two shafts (22, 23) are in front of the main body frame (10) from rear to front. A packaging machine, characterized in that it is mounted on said first frame (43) so as to be movable between an adjustment position directed obliquely upwards towards the front. 2. The packaging machine according to claim 1, further comprising a mechanism (42, 51, 52, 59) for raising and lowering the first frame (43). 3. The packaging machine according to claim 1, further comprising a mechanism (85) for adjusting the tilt angle of said second frame (61) in said adjustment position.

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