JPS6050644B2 - Case flap opening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a case flap opening device for opening the flap of a case such as a cardboard case.

For example, in a television receiver that uses a wooden cabinet, the assembled wooden cabinet is stored in a cardboard case and transported, and at the destination, the cardboard case is opened, the wooden cabinet is taken out, and other chassis, cathode ray tubes, etc. It is combined into a finished product. Here, the configuration of the corrugated hole case used for storing the wooden cabinet and to which the apparatus of the present invention is applied will be explained with reference to FIG. In the same figure, 1, 1 is an inner flap connected to the upper end of the long-side opposing side plates 2, 2;
Reference numerals 3 and 3 denote outer flaps that are connected to the upper ends of the short-side opposing side plates 4 and 4, and the tip corner portions 3a and 3 of these outer flaps 3 and 3 are
...... is the groove 1a of the inner flap 1, 1...
It has become stuck and locked. Note that the tips of the inner flaps 1, 1 slightly overlap each other. This overlapping portion is indicated by diagonal lines in the figure. Conventionally, when opening such a cardboard case, an operator used the outer flap and the inner flap sequentially by hand, resulting in extremely low production efficiency.
The present invention was made in view of the above-mentioned drawbacks of the conventional art, and an object of the present invention is to automatically open the inner flap and outer flap by a machine.

Furthermore, the present invention does not open the inner and outer flaps one by one, but instead opens three of the four flaps at the same time when opening them for the first time, reducing the opening time. It is something. To achieve this object, the present invention provides a case comprising a pair of inner flaps whose tips slightly overlap, and a pair of outer flaps whose tip corners fit into the grooves of each inner flap and are locked. This flap opening device has a pair of rods that have a rotary plate at the lower end for engagement with the inner flap and can move up and down as well as left and right and front and back. The upper inner flap and the pair of outer flaps are simultaneously opened by pulling the rotary plate out of the groove of the flap and raising the rod by placing the rotary plate on the upper inner flap of the pair of inner flaps, and then opening the remaining inner flaps. In addition, a lever is provided to further horizontally open the inner and outer flaps opened by the pair of rods, and a push rod is provided to push the inner and outer flaps opened by the lever.

An embodiment of the present invention will be described below based on the drawings (FIGS. 2 to 5).

First, the opening order according to the present invention will be explained based on FIG. 2.

In FIG. 2A, the two rods 5, 5 descend from above the cardboard case 6, and place the flaps 5, 5 on the inner lower side of the inner flaps 1, 1, which overlap each other. The plates 7, 7 at the lower end are slightly pressed against each other. Next, in FIG. 2B, the plates 7, 7 having rotational axes in the rods 5, 5 are rotated 180 times in the direction of the arrow A, to the inner upper side of the inner flaps 1, 1 which overlap each other. The outer flaps 3, 3 are engaged with the inner flaps 1 of the flap 1, and then the outer flaps 3, 3 are opened left and right in the two directions shown by the arrows C so that the rods 5, 5 move away from each other, and the outer flaps 3, 3 are pushed as shown. The tip corner portion 3a is bent from the bent portion provided on the flaps 3, 3.
comes off from the groove 1a of the inner flaps 1,1. Next, in FIG. 2C, the plates 7, 7 rise together with the rods 5, 5 to pull up the upper inner flap 1. As a result, the outer flaps 3, 3 are also pulled up. In FIG. 2D, the high rotors 8, 9 rotate and the levers 8a, 9a attached thereto open the outer flaps 3, 3 horizontally.
Next, the final push rods 310, 11 are lowered and the horizontally opened outer flaps 3, 3 are finally pushed. Meanwhile, the rods 5, 5
moves horizontally to the side plate 2 side connected to the upper inner flap 1 in a direction orthogonal to the side plate 2, and the inner flap 1
Open further. In FIG. 2E, the high-4 rotor 12 rotates and the lever 12a attached to it opens the upper inner flap 1 horizontally. Next, the final push rod 13 is lowered and the horizontally opened inner flap 1 is finally pressed. During this time, the rods 5, 5 are lowered. In FIG. 2F, after the plates 7, 7 at the lower ends of the rods 5, 5 are reversed 1800 degrees to engage the remaining inner flaps 1, when the rods 5, 5 are raised, the remaining inner flaps 1 are pulled up as shown. Then, the rods 5, 5 move horizontally to the side plate 2 to which the inner flap 1 is connected in a direction orthogonal to the side plate 2, thereby further opening the inner flap 1. In FIG. 2G, the high rotor 14 rotates and the lever 14a attached to it opens the inner flap 1 in the horizontal direction. Next, the final push rod 15 is lowered and the horizontally opened inner flap 1 is finally pressed. During this time, the rods 5, 5 close closer to each other, and the levers 8a, 9a, 12a of the high rotors 8, 9, 12, 14,
14a is inverted. Again, the push rods 10, 11, 13, and 15 rise, and all return to their initial states. This completes the opening operation of the flap of the cardboard case 6. Next, Figures 3 to 5
An embodiment of the device of the present invention will be described based on the drawings.

A cardboard case (hereinafter referred to as case) 6 is conveyed by a conveyor 16 in the direction of arrow H in FIG.
The case 6 sent by the conveyor 16 hits a vertically movable stopper 17, and when the conveyor 16 stops at the same time, the left and right guides 18, 18 clamp the case 6 between the cylinders 19, 19, and the pusher at the tip of the rotating linear cylinder 20 21, the case 6 is pressed against the stopper 17, and positioning is completed. 22 is a frame 23 above the flap opening position of the case 6 being sent on the conveyor 16.
This cylinder device 2 is attached to the cylinder device 2.
A bearing portion 24 is attached to the lower end of the second rod 22a.

Reference numeral 25 designates a threaded rod whose longitudinally intermediate portion is supported by the bearing portion 24 along the same direction as the moving direction of the case 6 on the conveyor 16. Half is right-handed thread 25a1 Half is left-handed thread 2
5b.

The bearing portion 24 has a threaded rod 25 parallel to the threaded rod 25.
The longitudinal intermediate portions of the two guide rods 26, 26 are supported on both sides of the guide rods 26, 26. These threaded rods 25 and guide rods 26,
Both ends of 26 are supported by bearings 27 and 28. A motor 29 is attached to one of the bearings 27, and one end of the threaded rod 25 is connected to this motor 29.
The bearing parts 27 and 28 are fixed to the lower ends of vertically oriented guide rods 31 and 31 fitted into cylindrical guides 30 and 30 attached to the frame 23, respectively. The frame 23 has the guide rods 26, 26 attached to the frame 32.
It has sliding parts 34, 34 on the lower surface that can be fitted onto and slid on guide rods 33, 33 mounted horizontally so as to be perpendicular to the guide rods, and can be slid by cylinder devices 35, 35. It's becoming like that. 36, 36 are blocks located on both sides of the bearing portion 24 and screwed into the right-hand thread 25a and left-hand thread 25b of the threaded rod 25;
The guide rods 26, 26 are inserted through the holes 6.

Therefore, the blocks 36, 36 are moved by the guide rods 26, 2 as the threaded rod 25 is rotated by the motor 29.
6.Move relatively near and far on the screen. Further, the upper ends of the hollow rods 5, 5 are fixed in the shafts 36, 36, and flexible shafts 37, 37 are fixed in the rods 5, 5.
High rotors 38, 38 and the plates 7, 7 are attached to the upper and lower ends of the flexible shafts 37, 37, respectively. Therefore, the plates 7, 7 are high rotor 38
, 38 allows forward and reverse rotation within a range of 180 degrees via the flexible shafts 37, 37. the frame 32
has frames 39, 39 attached to its upper surface and frames 40, 40 attached to its lower surface, and these frames 39
, 39, 40, and 40 respectively have cylinder devices 41 for final pushing,
Two each of 42, 43, and 44 are attached. Note that the high rotors 8, 9, 12, and 14 are attached to the frame 23. Next, to explain the operation, first, when the positioning of the case 6 is completed, the cylinder device 22
After the lowering, the high rotors 38, 38 are operated, and the plates 7, 7 are rotated 1800 times, and then the motor 29 is operated, and the links 36, 36 are opened to the left and right. Next, after the cylinder device 22 rises, the high rotors 8 and 9 operate, and the respective levers 8a and 9a rotate 1808 times. This results in case 6
The outer flaps 3, 3 are opened. Thereafter, the final push rods 10, 11 are lowered by the cylinder devices 41, 42 for final pressing, and the outer flaps 3, 3 are pressed firmly. During this time, the cylinder devices 35, 35 are operated and the frame 23 is moved, so that the cages 5, 5 are moved. In addition, the high rotor 12 also operates, and the lever 12a rotates 1800 times to open the upper inner flap 1 of the inner flaps 1, 1 that overlap each other, and the final pusher cylinder device 43 lowers the final pusher rod 13 to apply the final pusher. Determine and press inner flap 1. Next, the cylinder device 22 is lowered, and then the high rotors 38, 38 are operated, and the plates 7, 7 are reversed by 180 degrees. Thereafter, the cylinder device 22 rises and the high rotor 14 also operates, the lever 14a rotates 180 degrees to open the remaining inner flaps 1, and the closing rod 15 is lowered by the closing cylinder device 44 to determine the inner flap 1. push. During this time, the motor 29
is reversed so that the blocks 36, 36 close closer to each other, and the lever 8a of the high rotor 8, 9, 12, 14
, 9a, 12a, and 14a are inverted. Mataketsu push stick 10,1
1, 13, 15 are final push cylinder devices 41, 42, respectively.
43 and 44, and everything returns to its initial state.
The above cycle operation is performed for each case 6 sent on the conveyor 16.

The case flap opening device of the present invention can be implemented as described above, and includes an inner flap connected to the upper end of one set of opposing side plates and an outer flap connected to the upper end of the other set of opposing side plates. A machine can automatically open the flap of a case that has a flap, and the tip corner of the outer flap is locked by fitting into the groove of the inner flap, and can be done in one station. All flaps can be opened, making the overall configuration of the device compact. In particular, when opening for the first time, the plates 7, 7 at the lower ends of the rods 5, 5 engage with the upper inner flaps of the inner flaps that overlap each other, and in this state, the rods 5, 5 move away from each other. After opening left and right like this, rod 5
, 5 are raised, three flaps can be opened at the same time, and the time required to open all the flaps can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a cardboard case to which the device of the present invention is applied, FIGS. 2 to 5 show an embodiment of the present invention, and FIGS. 2A to 2G are schematic explanatory diagrams showing the flap opening order. FIG. 3 is a detailed side view of the apparatus of the present invention, FIG. 4 is a front view thereof, and FIG. 5 is a plan view thereof. 1...Inner flap, 1a...Groove, 3...
...Outer flap, 3a...Tip corner, 5.
...Rod, 6...Cardboard case, 7
...Plate, 8,9...High rotor, 8a
, 9a... Lever, 10, 11... Katsuo stick, 12... High rotor, 12a... Rubber, 13... Katsuo stick, 14... ...High Rota, 1...Luba, 15...Katsuobo.

Claims (1)

[Claims] 1 A case flap opening device comprising a pair of inner flaps whose ends slightly overlap, and a pair of outer flaps whose end corners are fitted into grooves of each inner flap and locked, and which has an inner flap at the lower end. A pair of rods are provided which have a rotating plate for engaging with the flap and are movable up and down as well as left and right and back and forth, and by moving this rod in the left and right direction, the tip corner of the outer flap is pulled out from the groove of the inner flap and the rotating plate is removed. The inner flap at the upper end and the pair of outer flaps are opened at the same time by lifting a rod across the upper inner flap of the pair of inner flaps, and then the remaining inner flaps are opened. This flap opening device for a case is provided with a lever that further horizontally opens the inner and outer flaps that have been opened, and a push rod that pushes the inner and outer flaps opened by the lever.