JPH052410Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a case sealing machine, and more particularly to a case sealing machine suitable for sealing the left and right bottom flaps of a cardboard case.

``Prior Art'' In general, corrugated cases are made by processing corrugated sheets using a box-making machine so that they can be assembled into a box shape, then folding them flat and storing them, and when ready to use, unfolding them into a box shape using a case former. A case sealing machine applies adhesive tape or gummed tape between a pair of left and right lid flaps or bottom flaps to seal the case. Conventionally, in order to seal the bottom flap of a cardboard case, the contents are put into the case, and the weight of the contents is used to prevent the bottom flaps from expanding due to the restoring force of the case sealing machine. Press it onto a number of rolls, and in this state apply adhesive tape or gummed tape from the lower part of the front edge of the case to the lower part of the rear edge of the case through between both bottom flaps, or press the top surface of the case with a presser. Then, press both bottom flaps of the case onto the multiple rolls of the case sealing machine, and in this state, paste from the lower part of the front end of the case, through between the both bottom flaps, to the lower part of the rear end of the case in the same way as above. The current situation is that

``Problem to be solved by the invention'' However, the former method of sealing a cardboard case utilizes the weight of the contents, so on some production lines, only the bottom surface of the cardboard case is sealed before transportation. There are cases where it is necessary to add the contents while moving the container, but this cannot be applied to such production lines. In addition, in the latter case, a mechanism that can press from the top surface of the cardboard case is required, and the height of this mechanism must be adjustable depending on the size of the cardboard case, making the structure complicated. There was a problem when I was inviting them.

Therefore, in view of the above-mentioned circumstances, the purpose of the present invention is to provide a case sealing machine that can reliably seal the bottom of the case without introducing the contents, and does not complicate the structure. do.

"Means and actions for solving the problem" The present invention was made to achieve the above object. First, the case is assembled into a box shape using a case former, etc., and the case is inserted between receiving rollers and pushed. The receiving rollers clamp both sides of the case, and as the case is fed in, the receiving rollers rotate and press the case onto a large number of rolls, and while the case is being conveyed between the conveyors, the left and right sides of the case are The bottom flap is sealed with adhesive tape or gummed tape.

"Embodiment" Below, one embodiment of the case sealing machine according to the present invention will be described based on the drawings. In Figure 1, 1
2 is a machine stand, and 2 is a large number of transport rolls rotatably arranged on the machine stand 1. On the machine base 1, there is a pair of left and right belt conveyors (hereinafter simply referred to as conveyors) 4 extending in the feeding direction of the cardboard case 3 and driven by a motor, similar to well-known ones.
A and 4b are arranged. The conveyors 4a, 4b can be adjusted to move in the direction of arrow A in order to correspond to the width of the cardboard case 3 to be fed.
This adjustment mechanism, as shown in FIGS. 1 and 2,
A support shaft 6 is installed vertically on the frame 5 of the conveyor 4a, 4b, a nut block 7 is fixedly installed on the support shaft 6, and screw rods 8, 9 formed with reverse threads at the center are screwed into the nut block 7. It is something that An adjustment handle 10 is provided at one end of the front screw rod 8. Between the front screw rod 8 and the rear screw rod 9, an interlocking mechanism consisting of a sprocket, a chain, etc. is used to interlock the rotation of the screw rods 8 and 9 with the rotation of the handle 10. The spacing can be adjusted uniformly over the entire length.
A sticking mechanism 11 is disposed near the center of the machine base 1 by removing a part of the roll 2. Adhesion mechanism 1
1 is of a well-known mechanism, and includes a front roll 12 and a rear roll 13.
3 is a cardboard case 3 by conveyors 4a and 4b
The machine 1 is pressed by the link mechanism 14 when it is conveyed.
I have become able to immerse myself inside. A cutter 16 is disposed between the front roll 12 and the rear roll 13 and can be retracted into the machine base 1 by a link mechanism 14 together with the front roll 12 and rear roll 13. Receiving member 1 that covers the top
8 and at the same time only the rear part of the lever lever 15 is pressed by the rear end of the bottom of the cardboard case 3. The swing of the lever lever 15 causes the cutter 16 to protrude from the machine base 1 and close the bottom flap of the cardboard case 3. 3
The adhesive tape 17 or gummed tape after attachment of the adhesive tapes a and 3b is cut.

The present invention provides a case sealing machine with the above-mentioned well-known configuration.
Receiving rollers 19 and 20 are provided. The receiving rollers 19, 20 are rotatably supported by support plates 21, 22 fixed to the front ends of the frames 5 of the conveyors 4a, 4b. The support plates 20 and 21 are provided so as to be inclined upward with respect to the upper surface of the machine stand 1. Therefore, when the cardboard case 3 is fed in, the receiving rollers 19 and 20 touch the upper surface of the machine base 1,
That is, as shown in FIG. 2, it is arranged so as to rotate diagonally downward with respect to the feeding direction. The receiving rollers 19 and 20 are made of rubber and have a gap therein to increase the holding force of the side surface of the corrugated cardboard sheet 3 and to have elastic force.

To explain the operation of the case sealing machine having the above configuration, first, the cardboard case 3 which has been folded flat and stored is assembled into a box shape using a case former (not shown) having a well-known configuration, and then the case shown in FIG. 1 is assembled. A former extrusion mechanism 23 feeds the cardboard case 3 into a case sealing machine. First, both sides of the cardboard case 3 are covered with receiving rollers 19,
20, and further pushed in by the extrusion mechanism 23. At this time, due to the restoring force of the bottom flaps 3a and 3b, the cardboard case 3 does not come into close contact with the top surface of the machine 1, that is, on the roll 2, and the bottom flaps 3a,
It is often held up by the restoring force of 3b. Since the receiving rollers 19 and 20 are pivoted on support plates 21 and 22 at an oblique angle with respect to the upper surface of the machine base 1, as the cardboard case 3 is fed in by the push-out mechanism 23, As shown in FIG. 2, a force is applied in the direction C to press the cardboard case 3 downward in the feeding direction B.
Therefore, as the cardboard case 3 is fed in, it is pressed onto the roll 2 by the receiving rollers 19, 20, the floating is eliminated, and the bottom flaps 3a, 3b are brought into close contact with the roll 2, whereby each bottom flap 3a , 3b are joined to the lower ends of the front and rear walls of the cardboard case 3. Bottom flaps 3a, 3 of cardboard case 3
b, that is, the bottom surface is pressed onto the roll 2 and conveyed to the sticking mechanism 11. As is well known, the pasting mechanism 11 first presses the adhesive tape 17 or gummed tape onto the lower part of the front wall of the cardboard case 3 with the front roll 12 while conveying the cardboard case 3.
As the cardboard case 3 is transported, the bottom flap 3
a and 3b, and when the rear end of the cardboard case 3 passes over the receiving member 18, the cardboard case 3
As a result, only one side of the lever rod 15 is pressed, and the cutter 16 on the other side of the lever rod 15 is pressed.
is pushed up to the top surface of the machine stand 1 and the adhesive tape 17
Or cut the duct tape. When the cardboard case 3 is further conveyed and the rear roll 13 is no longer pressed by the cardboard case 3, the link mechanism 1
4 toward the rear, that is, the cardboard case 3
It protrudes from the top surface of the machine base 1 while swinging in the feeding direction of the paperboard, thereby pressing the end of the adhesive tape 17 or gummed tape against the lower part of the rear wall of the cardboard case 3. As a result, the bottom surface of the cardboard case 3 can be sealed well without the bottom flaps 3a, 3b lifting up from the lower ends of the front and rear walls.
After the sealing is completed, the cardboard case 3 is transferred to the conveyor 4.
It is carried out from the machine stand 1 by a and 4b. The above operation is repeated every time the cardboard case 3 is pushed out from the case former.

"Effects of the Invention" As described above, according to the case sealing machine according to the present invention, when the case is fed, the receiving rollers pinch it and feed it into the conveyor while pushing it downward, that is, onto the machine stand, so that the bottom This effectively eliminates the problem of the case being lifted off the machine table due to the restoring force of the flap, resulting in poor sealing.
Furthermore, the structure is extremely simple and it is extremely convenient to use.

[Brief explanation of the drawing]

The drawings show an embodiment of the case sealing machine according to the present invention, and FIG. 1 is a perspective view of the case sealing machine;
FIG. 2 is a side view of the main parts showing the operation of the case sealing machine. 1... Machine stand, 2... Roll, 3... Cardboard case, 3a, 3b... Bottom flap, 4a, 4b...
... Conveyor, 11 ... Adhesive mechanism, 17 ... Adhesive tape, 19, 20 ... Receiving roller, 21, 22 ...
...Support plate.

Claims (1)

[Scope of utility model registration request] After assembling the case into a box shape, a conveyor is used to convey the case while holding down both sides, a number of rolls that receive the bottom surface of the case during conveyance by the conveyor, and a conveyor is used to move the case between the left and right bottom flaps while being conveyed by the conveyor. In a case sealing machine that includes a pasting mechanism for sealing with adhesive tape or gummed tape, a receiving roller made of an elastic material that clamps both sides of the case is placed in front of the case into the conveyor at an angle to the direction in which the case is fed. A case sealing machine characterized by being rotatably arranged with a downward bevel.