JPH072490B2 - Device for changing the support angle of the packaging bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The apparatus for varying the support angle of the packaging bag of the packaging machine according to the present invention has no technical idea of changing the angle from upright to horizontal or from horizontal to upright. A pair of bag grips is freely supported so that it can be moved upright and horizontally with reference to the supporting portion at a required station, and the packaging bag can be moved from horizontal to vertical or from vertical to horizontal. .

(Prior art and problems) Conventionally, there are linear packaging machines and rotary packaging machines as packaging machines, but since the packaging bags are supported by a bag grip at a vertical or horizontal invariable angle, vertical to horizontal packaging machines can be used. Or, there is no model that can change the angle from horizontal to vertical. However, now that the range of automatic packaging with packaging bags has expanded, measures to prevent damage to the packaged item or to improve the packaging effect, or vertically support the packaged item such as thin and hard spaghetti. There is a problem that some kind of countermeasure is required to prevent the trouble of being broken by the impact when filling the packaging bag.

The present invention has an object and an object to solve such a problem.

(Problems to be Solved and Means for Solving the Problems) A packaging bag supporting angle varying device for a packaging machine according to the present invention fixes a moving plate 3 to an endless timing belt 2 which is provided in a machine frame 1 and intermittently horizontally moves. , The shaft 6 is rotatably mounted on the movable plate 3 in parallel with the endless timing belt 2, and the grips G ₁ and G ₂ for holding the packaging bag a are mounted on the shaft 6 so as to rotate integrally. A roller mechanism 23 is rotatably assembled to an arm 22 provided integrally with G ₁ and G ₂ , a base end portion of the machine frame 1 is rotatably assembled, and a link mechanism 25, 26 operated by a cam 41,
A roller support member 35a is attached to the free end sides of 32 and 33 so as to move between a horizontal position and a vertical position along an arcuate locus having the shaft 6 as the center of curvature, and the grips G ₁ and G ₂ are linear. The roller 23 in the section where the roller 23 moves dynamically
When the roller support member 35a is in the horizontal position, the packaging bag a sandwiched by the grips G ₁ and G ₂ is held horizontally, and when the roller support member 35a is in the vertical position, the grip G is held.
₁ , the rotation position of the roller 23 is regulated by the roller support member 35a so that the packaging bag a sandwiched by G ₁ and G ₂ is held vertically.

(Embodiment) The attached drawings show an embodiment of the present invention. Fig. 1 is a schematic plan view, Fig. 2 is a plan view of essential parts, Fig. 3 is a front view of the same, and Fig. 4 is Fig. 3A. FIG. 5 is a side view cut along line A, FIG. 5 is a side view of the same operating state, and FIG. 6 is a perspective view of the non-rotating shaft 5.

FIG. 1 shows linear moving parts I and I'and semicircular moving parts II at both ends.
A linear moving packaging machine is shown in which a machine frame 1 provided with II ′ is provided with an intermittently rotating endless timing belt 2 that pauses during a half rotation of the drive shaft 40 of the packaging machine and moves during the remaining half rotation. The bending device of the present invention is provided with the stations Ic and If of the linear movement unit I.
To be installed.

The endless timing belt 2 is provided with movable plates 3 having protruding frame pieces 4 and 4 formed at both ends, the number of which corresponds to the number of stations including idle stations, which is the same as in a normal packaging machine, and the protruding frame pieces 4 and 4 are circular at both ends. The shaft 6 is rotatably passed, and the non-circular shaft 5 having a square cross section is mounted between the circular shafts 6, 6.

This example semicircular moving part II of the non-circular shaft 5 with the axis in the direction of travel, Yes in the short to facilitate the rotational movement of the II ', the grip G ₁ prior line of the bag grips pair 11 respectively or Any one of the trailing grips G ₂ is attached to the bifurcated protrusion 8 of the holding piece 7 which is fitted on the non-circular shaft 5 so as to be movable in the axial direction.

As shown in FIG. ₂ , the grips G ₁ and G ₂ are composed of a fixed support piece 12 and a movable support piece 14 arranged in an X shape on the piece 12 and pivotally supported by a shaft 14a. Shaft provided at the rear end
The roller 16 of 15 is pushed in the direction of arrow w in FIG.
The outer shaft 17 of the fixed jaw 13 and the shaft of the protruding end of the movable support piece 14
The movable jaw piece 20 which is connected via a link 19 by means of 18 is closed so that both longitudinal edges of the packaging bag a can be gripped.
The construction is symmetrical, and the base of the fixed support piece 12, which is substantially the base of the grips G ₁ and G ₂ , is attached to the bifurcated projection 8 of the hugging piece 6. The pair of grips G ₁ and G ₂ are for controlling the bag mouth of the packaging bag a to be expanded or tensioned as shown in FIG. 2, but this control is not the gist of the present invention. Omit it.

A fixed armature 21 is fixed to one side surface of the non-circular shaft 5 which is in contact with the protruding frame piece 4, and a grip G ₁ , as shown in FIG.
An arm 22 extending downward when G ₂ has a horizontal angle is provided, and a roller 23 is attached to the lower end of the arm 22. A vertically fixed link 24 is attached to the front surface of the stations Ic and If of the machine frame 1, and the first link 25 and the second link 26 having different lengths are vertically supported and axially supported. First link 25
Is a shaft that vertically matches the shaft 27 of the tip of the second link 26.
28, a shaft 29 between the shaft of the shaft 28 and the base, and a shaft 30 of a protruding tip, and a rod 31 extending downward is connected to the shaft 29 to form shafts 27, 28. The movable link 32 is axially connected, and the lower end of the roller support link 33 is axially connected to the shaft 30. The axis 34 of the distal end of the roller supporting link 33 is formed in an L-shaped support rollers 23 at the short side 35a when the grip G _1, G ₂ in the upright angle of FIG. 4, the grip G _1, G ₂ a 5 When the horizontal angle of FIG. 5 is used, the protrusion 36 of the roller support piece 35 that supports the roller 23 at the short side 35a is pivotally supported, and the protrusion end of the "square" shaped piece 37 extended upward from the shaft 28 of the movable link 32. A support piece 39 for pressing and fixing the long side of the roller support piece 35 from the side opposite to the shaft 34 is pivotally supported on the shaft 38.

At the lower end of the rod 31, the cam 41 attached to the drive shaft 40 comes into contact with the contact rollers 44 and 45, and the grip G ₁ (or G ₂ ) is supported.
It is connected to one swinging end of an L-shaped lever 43 which swings around 42 at the angle of FIG. 4 and the angle of FIG.

In this embodiment, when the bag grip pair 11 (grip G ₁ , G ₂ ) is changed from the vertical angle in FIG. 4 to the horizontal angle in FIG.
The lever 43 is rocked by the cam 41 from the angle shown in FIG. 4 at the connecting portion with the rod 31 as shown in FIG. Then, the first link 25, the second link 26, the movable link 32, and the roller support link 33 projecting piece 36 rotate from the position shown in FIG. 4 to the position shown in FIG. It moves along an arcuate locus with the center of curvature. Along with this, the roller support piece 35
The short piece 35a of the is moved from the horizontal position shown in FIG. 4 to the vertical position shown in FIG. At that time, the roller 23 is rotated by the left axis 6 in contact with the short piece 35a by the weight of the grip G _1, G ₂ or the arm 23 and the outer peripheral portion as a fulcrum, the grip G _1, G ₂ is the fifth
Rotate to the horizontal angle position shown in the figure. (The packaging bag a has a vertical angle).

When the bag grip pair 11 (grip G ₁ , G ₂ ) is changed from the horizontal angle in FIG. 5 to the vertical angle in FIG. 4, the L-shaped lever 43 is moved by the cam 41 from the angle in FIG. Shake the connection with Rod 31 up. Then, the first link 25, the second link 26, the movable link 32, the roller support link 33, and the protruding piece 36 are in the fifth position.
It rotates from the position shown in the figure to the position shown in FIG. 4, and the short piece 35a of the roller support piece 35 moves from the vertical position shown in FIG.
Move to the horizontal position shown. Along with that, the roller 23 is lifted by the roller support piece 35, and the grips G ₁ and G ₂ are moved to the fourth position.
Rotate to the vertical angle shown in the figure. (The packaging bag a has a horizontal corner).

As shown in FIGS. 4 and 5, the roller 23 is in sliding contact with the short piece 35a of the roller supporting piece 35 in the section where the grips G ₁ and G ₂ move linearly.
In c and If, the roller support piece 35 is attached to the link mechanism 25, 26, 3
By operating at 2 and 33, the same station Ic, I
At f, the packaging bag a can be held in a horizontal position or in a vertical position.

(Operation and effect) The present invention is capable of changing a number of pairs of bag grips from an upright angle to a horizontal angle or a reverse angle at a predetermined station. Depending on the condition, liquids, powders, etc. that must be filled vertically, trays, solids, etc. that must not be filled vertically One suitable for filling, one that can be selected and executed according to the nature of the filling, such as a horizontal angle for filling and a vertical bag to settle the bottom of the packaging bag etc. Has the action and effect of being able to freely select the packaging method.

[Brief description of drawings]

FIG. 1 is a schematic plan view, FIG. 2 is a plan view of essential parts, FIG. 3 is a front view of the same, and FIG. 4 is a sectional view taken along line AA of FIG. A side view, FIG. 5 is a side view of the same operating state, and FIG. 6 is a perspective view of the non-rotating shaft 5. G ₁ , G ₂ ... grip, a ... packaging bag 3 ... moving plate, 4 ... protruding frame piece, 5 ... non-circular shaft 6 ... circular shaft, 7 ... hugging piece, 8 ... bifurcated Projection 11 …… Bag grip pair, 21 …… Fixing holder 22 …… Arm, 23 …… Roller 24 …… Fixing link, 25 …… First link 26 …… Second link, 31 …… Rod 32 …… Movable link, 33 …… Roller support link 35 …… Roller support piece, 35 a …… Short side 35 b …… Long side, 37 …… "Shape piece 39 …… Support piece, 40 …… Drive shaft 41 …… Cam , 42 …… Support shaft 43 …… L-shaped lever, 44, 45 …… Contact roller

Claims (1)

[Claims] 1. A movable plate 3 is fixed to an endless timing belt 2 which is provided in a machine frame 1 and horizontally moves intermittently, and a shaft 6 is rotatably assembled to the movable plate 3 in parallel with the endless timing belt 2. , The grips G ₁ and G ₂ for sandwiching the packaging bag a on the shaft 6 are assembled so as to rotate integrally, and the roller 23 is rotatably mounted on the arm 22 integrally provided on the grips G ₁ and G ₂ . A roller support member 35a is provided between the horizontal position and the vertical position on the free end side of the link mechanism 25, 26, 32, 33 which has a base end rotatably assembled to the machine frame 1 and is operated by a cam 41. 6 is attached so as to move along an arcuate locus having a center of curvature, and the roller 23 is slidably contacted with the roller support member 35a in a section where the grips G ₁ and G ₂ linearly move,
When the roller support member 35a is in the horizontal position, the grip G
_The packaging bag a sandwiched by ₁ and G ₂ is held horizontally, and the roller 23 is rotated so that the packaging bag a sandwiched by the grips G ₁ and G ₂ is held vertically when the roller support member 35a is in the vertical position. A variable wrapping bag support angle device for a wrapping machine, characterized in that its moving position is regulated by a roller support member 35a.