JPS61259907A - Packer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a packaging machine for packaging an object in a cylindrical stacked packaging material, and more specifically to a method for folding the packaging material of this packaging machine. Regarding the bending mechanism. The packaging material has a pair of panels that are connected along the fold before assembly, and a pair of flaps that are provided to span the fold and hold the packaged item,
The folding mechanism includes a conveying device that conveys the assembling packaging material and the object to be packaged along a predetermined route. The folding mechanism folds the flap inside the packaging material.

[Purpose of the invention]

The present invention provides a folding mechanism that forms a hole for receiving a packaged item by cutting out the pair of flaps from a cylindrical assembling packaging material with open ends and folding the flaps inward. The two flaps constituting each pair of flaps are engaged and folded inwardly, while the succeeding portions of the flaps of the erectable packaging material are held so as to move generally laterally by suitable industrial equipment. Ru.

[Summary of the invention]

The present invention is a packaging machine for packaging an object using a stacked cylindrical packaging material, and the packaging material has a pair of walls connected along a fold, and a pair of walls provided so as to span the fold. The packaging machine has a pair of flaps that hold the object to be packaged and reinforce the packaging material, and the packaging machine advances the packaging material before assembly and the object to be packaged with the packaging material along a predetermined path. and a folding mechanism that engages and folds the pair of flaps and folds the flaps inside the packaging material, the folding mechanism being moved for the folding. A rotary folding tool is provided, and when the pre-assembly packaging material and the folding tool both pass through the folding position of the packaging machine, the folding tool gradually enters the hole of the assembling packaging material to The flap is folded and retracted from the hole, the folding tool including a portion for engaging the configurable wrapper, and cooperating with a device for actuating the folding tool to cause the folding tool to perform a folding movement and a retraction motion. The packaging machine also includes a device for performing the movement, and the part that engages the assemblable packaging material has a pair of finger-like members that rotate and open, and the finger-like members are adapted to the folding movement of the folding tool. To provide a packaging machine characterized in that the packaging machine is opened following the opening of the packaging machine.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, folding I [
10 has two pairs of chains 2, an upper set of sprockets 12, and a lower set of sprockets 14. The upper chain and upper sprocket set 12 have spaced apart sprockets 16, 18 with endless chains around their outer peripheries. Similarly, the upper and lower chains and set sprocket 14 are sprockets that are separated with an endless chain on the outer periphery! -22
.

It has 24.

The mechanism is disposed adjacent to the inlet end of the packaging machine for the semi-finished products and the objects to be packaged. There are two sets of the above-mentioned mechanisms, and these two sets of mechanisms are installed side by side so that a feeding path F for the semi-finished products and the packaged objects is formed between them. The right i structure when viewed from the downstream side of the feeding route will be described below.

Is the drive sprocket 30 for transmitting the driving force of the mechanism 10 a suitable drive bag 2? (not shown) and includes an upper sprocket 32 and a lower sprocket 34, both sprockets l-32.

34 is fixed to the same drive shaft 36 of the above mechanism.

The drive sprocket 32 transmits the driving force to the sprocket 16a via the endless chino 38, and the sprocket 16a
connects the sprocket 16 of the upper endless chino and the set sprocket so that they can rotate. Drive sprocket 3
4 is a sprocket 24a that outputs the driving force from an endless chino 40.
This sprocket 24a rotatably connects the sprocket 24 of the lower endless chino and the assembled sprocket. As shown in the figure, the axes of the sprockets 16, 18 and sprocket set 12 of the upper endless chino and the axes of the sprockets 22, 24 and sprocket set 14 of the lower endless chino are both set in the longitudinal direction of the mechanism. The longitudinal gap between the upper sprocket and the lower sprocket adjacent to each end of the mechanism is determined by the pre-assembly colored material attached between the upper sprocket set 12 and the lower sprocket set 14. It is equal to the distance between the mounting positions A and B of the bending tool 42. -31 (4 in this case)
The bending tools 42 to 42G are installed between the endless chino and the set sprocket in the same manner as described above, and each of the bending tools is attached to a position A adjacent to one end of the upper endless chino 20 and a position A adjacent to one end of the lower endless chino. Attached to the gate with position B at the end of 26.

The endless chinos 20, 26 are driven synchronously, so that each bending tool moves along the path of said endless chino. When the above mechanism is activated, each bending tool has an endless chino 20.26
The actuating path W extends parallel to the movement path F of the pre-assembled color material and the packaged object, and the actuating path W extends parallel to the moving path F of the pre-assembled color material and the packaged object, and the bending tool is driven along the actuating path W for the traversal movement along the return path R. Having traversed the sprockets 16.22 at the downstream end of the path, the folding tool moves between the sprockets 18.24 and returns to the upstream position of the working path. This is 1
Cycle operation ends. As you can see from this,
To attach each bending tool to the upper and lower endless chenos, the bending tool is moved transversely at the ends of its working path and return path, so that the longitudinal axis of the bending tool is aligned with the working path and the end of its return path. It is necessary to make the bending tool parallel to the return path, and to make the outer surface of the bending tool face the feeding path of the pre-assembly colored material and the packaged object.

In addition, in FIG. 3, each folding shell, for example, the folding tool 4
2 includes a frame 44 which is attached to the endless chino 20.26 and accommodates a linear series of rotating folding members fl to f5. The folding members rotate independently of each other on a support shaft 46 extending in the longitudinal direction of the frame 44, and are subjected to an axial elastic load by a spring 48 at the end.

Each folding member f (see FIG. 3 fl) includes an upright lug 50 which is rotatably mounted on the shaft 46 and has a portion 5 that engages the pre-assembly colored upholstery.
2 extends outwardly on one side of the frame at the upper end of the lug and cam follower 54, and the cam follower 54 extends outwardly on the opposite side of the frame at the lower end of the lug. The portion 52 of each bending tool that engages with the colored material before assembly is 1
A pair of rotating finger members fa and fb are provided.

Each bending tool moves along its operating path W and passes through a bending position S, at which the cam block 56 is arranged behind the operating path. The cam block 56 is formed by a cam track 58 having a predetermined shape, and a follower of the bending member f is mounted on this cam track 56 to control the rotation of the bending member. Figures 4 to 8
In the figure, FIG. 4 shows the upstream end of the folding position S, and at this upstream end, the assembling packaging material of the stacked carton is connected to the moving path F of the packaging material and the packaged object. It moves in synchronization with the bending shell 42c along the bending shell 42c. This semi-finished product has a series of semi-finished product corner holding holes r, r on a straight line.

... and is folded along the fold line 60 so that the side wall panel 62 and the bottom overlapping panel 64 of this semi-finished product come into contact. Such corner retention holes facilitate the retention of the bottle in a completed carton, for example by receiving the bottom portion of the bottle. These corner retaining holes are each formed by partially bending the reinforcing tabs 1.12. 1 is cut at a fine notch before the corner holding hole is opened and the reinforcing tab is bent, and the side wall panel and the bottom panel of the assemblable packaging material are joined together so that adjacent portions overlap, The corner holding hole is formed.

As shown in the figure, the assembling packaging material is guided by the guide rod Q of the feeding route E.
The guide piece st enters the bending position S, and engages the bending tool 42C at the bending position S of the operating path W.

The fixed part P of the frame 44 (Fig. 1) is 1 pg, pq.
,... (Fig. 4 to Fig. 8), and this mekugi pg enters the side wall panel, and when the pre-assembly wrapping and folding device passes through the folding position, this semi-finished product and hold the bending device so that it does not come off. The object to be packaged, for example, a bottle, is transferred to the feed path F adjacent to the configurable packaging material by feed lugs 61 spaced apart along the upper endless cheeper 38.
conveyed along the

When the folding device and the assemblable packaging pass through the folding position S, the cam follower of fold 81SUf1 enters the cam track 58 and rides on the working surface C1 of the cam (FIG. 1). Due to this operation, the bending member r1 rotates, and the finger-shaped bending members f and f rotate together to the outside of the frame 44 (clockwise as shown in FIG. 3), and are brought into a side-by-side state. Enter the front corner holding hole r of the semi-finished product to close this holding hole r1, and then tighten the tabs t' and t2.
(Figure 4) break the notch.

Due to the continuation of the forward movement, the finger-shaped bending member f1
The cam follower rides on the descending outer circumference C2 of the cam and retracts the rotating closed finger portion of the folding member. On the other hand, the bending member f2 is driven by the outer periphery C1 of the cam to break and separate the tab of the corner holding hole r2 in the same manner as described above. Therefore, its position is as shown in FIG. This rotating finger-shaped bending member moves from the position shown in FIG.
After moving slightly forward of the position shown in the figure, it returns to the position shown in FIG.

In FIG. 6, the cam follower of the bending member r1 rides on the outer periphery C3 of the cam follower, causing the bending member f1 to further rotate (secondary rotation), and this rotated bending member is inserted into the corner holding hole r1 as described above. Penetrate deeper than when moving. In FIGS. 9 to 12, the characteristics of the second rotation of the bending member f1 are finger-shaped bending members f, f
The fingers f , f rotate more when the ends freely engaging the carton Ia Ib of Ia move simultaneously with each other.
1b. When the folding member f1 moves forward (i.e., when it is folded), the finger-like folding member rotates from the retracted closed position shown in FIG. 9 to the open extended position shown in FIG. 12.

Each finger f , f has an end l that engages the carton
a Ib e and a transverse shoulder S remote from this end, which shoulder S includes a center of rotation P in the frame of the folding device; It has a back contact surface sb and a front contact surface sf, which front contact surface sf abuts the back stop surface bs and front stop surface fs of the frame, respectively.

In FIG. 6, the rotating folding member of the folding device f1 advances to the outer peripheral position C2 of the cam and rotates to the position shown in FIG.
s and simultaneously move the carton-engaging ends e of the finger-shaped folding members apart, thereby starting the side folding of the tabs t1 and t2. The folding member f2 is located at position 22C2 on the cam operating surface, and the folding member f3 is located at position c1 on the cam operating surface. At this position,
The front edge of the bottom panel 64 includes a guide block 66 and a guide piece s.
t, the leading edge of the bottom panel 64 is connected to the guide block 66.
and guide strip st, and is guided upward until it is more horizontal with respect to the side wall panel 62.

In the position shown in FIGS. 7 and 12, the cam follower of the folding member f1 reaches the working surface C4 of the cam and rotates the rotating fingers further apart as shown in FIG. 1.Fold the tab 1.12 further to the side. Folding the ribs over the side walls of the material and the bottom panel is done automatically by folding the bottom panel up. At this time, the bending member f2 is at position 1de3 (FIG. 3) on the cam's operating surface, and the bending member f3 is at position C2 on the cam's operating surface.
, and the bending member f4 is at position C1 on the working surface of the cam.

Next, in FIGS. 8 and 9, the cam follower of the finger-like member f1 is lowered to the cam operating surface C5 and the folding member f
retracts the rotating finger from said hole r1 to an initial position, in which position the back contact surface sb of said rotating finger hits the back stop surface bs, closing said rotating finger. The bottom panel 64 is further guided horizontally and, after the folding is complete, lies beneath the bottom of the packaged material that is fed into the mechanism 10 in adjacent alignment. At the same time, the other bottom panel of the semi-finished product assumes the same position with respect to the packaged items which are aligned and fed in parallel by the juxtaposed mechanisms. Thereafter, the bottom panels are overlapped by a tightening member (not shown) that pulls and overlaps the bottom panels, and the bottom of the object to be packaged enters each corner holding hole r1. Further, the bottom panel is held together by the cooperation of the fixing tabs and the holes in the upper bottom panel. On the other hand, the bending member f is located between positions C and C5 on the working surface of the cam, the bending member f3 is located between positions ic and c3 on the working surface of the cam, and the bending member f4 is located between positions C and C5 on the working surface of the cam. is at position C on the operating surface of
The folding member f5 is located at a position fllc1 above the working surface of the cam.

The bending tool 42C passes through the position of the bending tool 42 and returns to R.
When moved to , this folding member 42C passes through this reset position such that the folding tool 428 is at the reset position R8 (FIG. 2).

This reset position is further set by the cam block 68 (Fig. 3).
A horizontal linear cam track 70 is formed on this cam block 68. The downstream end of the cam track 70 is open so as to be guided by the cam follower of the bending member f. Thereafter, the folding tool is reset as it moves through the linear cam trunk 70 to a position where the cam follower is aligned with the upstream end of the cam track 58, and the folding tool is reset next to the subsequent pre-assembled color material. occupies a position where the cam is moved to position C1 on the operating surface to perform cycle operation.

In this way, the finger-like member rotates to its outermost position, engages the tabs t1 and t2 of the corner holding hole r, and bends it outward, and the finger-like member moves to its outermost position. Closed when rotated to position.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a side elevational view of the bending mechanism with the bending position l provided in the center, Fig. 2 is a schematic top view of the mechanism of Fig. 4 to 8 are cross-sectional views taken along the line ■-■ of the separate crank shape in the figure, and FIGS. 4 to 8 show the folding movement of the rotating folding tool against the semi-finished packaging material and the backward movement from the semi-finished product. The drawings showing the sequential operation of the bending position of the mechanism, FIGS. 9 to 12 are plane views showing sequential rotational movements of the finger-shaped members of the bending tool in the direction of mutual separation during the bending movement of the bending tool. It is a diagram. 10... Bending mechanism, 12.14... Set sprocket, 16 to 16c, 18.22.24.24a. 32.34... Sprocket, 20.26.38°4
0... Endless chain, 36... Drive shaft, 42 to 42
G...Bending tool, 44...Frame, 46...Support shaft, 48...Spring, 50...Lug, 52...Engaging portion, 54...Cam follower, 56.68 ...Cam block, 60...Fold, 61...Lug, 62.
...Side wall panel, 64...Bottom panel, 70...Cam track, A, B...Bending tool mounting position δ, b...
Color material before assembly, BS...Back stop surface, C to C5...
・Cam operating surface, F...Operating path, fl to f4...
・Bending member, fa. fla, t'b, flb...Finger-shaped member, fs...Front stop surface, q...Guide rod, P...Rotation center, pq.
...Mekugi, R...return route, r...packaging material corner holding hole before assembly, R8...reset position, S...bending position, sb...back contact surface, sf...・Front contact surface, s
T...Guide piece, 11.12...Reinforcement tab, W...
- Actuation path.

Claims (1)

[Claims] 1. A packaging machine for packaging an object using stacked cylindrical packaging materials, the packaging materials being connected along folds.
The packaging machine includes a pair of walls and a pair of flaps that are provided so as to span the folds to hold the packaged item and to reinforce the packaging material, and the packaging machine includes a pre-assembled packaging material and a pair of flaps that are provided so as to span the folds and to reinforce the packaging material. a folding mechanism that engages and bends the pair of flaps and folds the flaps inside the container; The mechanism includes a rotary folding tool that moves for the folding, and when the pre-assembled packaging material and the folding tool both pass through the folding position of the packaging machine, the folding tool moves the pre-assembled packaging material and the folding tool. the folding tool gradually enters a hole in the material to fold the flap and retracts from the hole, the folding tool including a portion for engaging the pre-assembled packaging material and cooperating with a device for actuating the folding tool; In a packaging machine that also includes a device for causing the folding tool to perform a folding motion and a backward movement, the portion that engages the unassembled packaging material is provided with a pair of finger-like members that rotate to open. A packaging machine characterized in that the member opens following the folding movement of the folding tool. 2. The cooperating device comprises a cam follower, the cam follower riding on a cam track mounted at the bending position, the cam track having a profile that allows the bending movement and the backward movement to occur. A packaging machine according to claim 1. 3. During the bending movement of the bending tool, the finger-like member
Claims 1 or 2, characterized in that the fingers have a portion that engages a fixed stop, around the surface of which the fingers rotate in such a way that they open relative to each other. Listed in the packaging machine. 4. The finger-like member has a portion that engages with a fixed stop when the bending tool moves backward, and the finger-like members rotate around the surface of the stop so that they come together with each other. A packaging machine according to claim 3, characterized in that: 5. The packaging machine according to claim 3 or 4, wherein the finger-like members rotate substantially simultaneously. 6. A plurality of similar folding tools positioned in a straight line are arranged to operate sequentially on a folding device, and the mechanism includes one or more of the above folding devices. The packaging machine according to items 1 to 5. 7. When each folding device passes through the above folding position, it is forced to repeat the actuation movement and return movement along the operating path in the direction of conveyance of the pre-assembled packaging materials and the objects to be packaged. moving along a return path in the opposite direction, the actuation path and the return path being substantially parallel to the conveyance path;
7. The packaging machine according to claim 6, wherein said folding device is mounted so that said rotating folding tool faces said conveying path throughout said periodic operating motion. 8. The return path includes a reset position, and in this reset position, the bending tool is set to a position where it performs the bending movement in the bending position. packaging machine.