JP3717947B2 - Bag sealing device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a bag sealing device used for, for example, a work for sealing a slot of a bag body laid inside a box such as a cardboard case or a synthetic resin case.
[0002]
[Prior art]
Conventionally, as a method for sealing a packaging bag covered with a corrugated cardboard box as in the above-described example, for example, as shown in FIG. 13, each short side flap Aa, Aa and each long side flap Ab of the cardboard box A, After the input port Ba of the packaging bag B covered with Ab is lifted upward, the flap opening mechanism 73 is driven, and the short side flaps Aa, Aa and the long side flaps Ab, Ab of the cardboard box A are moved. Each of the four open plates 74... Opens to the outside, the left and right pressing rollers 75, 75 sequentially press the packaging bag B from below to bleed, and the pair of heating plates 76, 76 remove the packaging bag B. There is a method in which the inlet Ba of the packaging bag B is wound or folded and stored in the cardboard box A after the inlet Ba is heated and sealed.
[0003]
[Problems to be solved by the invention]
However, when the short side flaps Aa, Aa and the long side flaps Ab, Ab of the cardboard box A are opened as described above, the air extraction and winding of the packaging bag B are not hindered and the cardboard box A is covered. The packaging bag B can be easily sealed, but for opening the short side flaps Aa, Aa and the long side flaps Ab, Ab of the cardboard box A at the box stop position set on the box transport path. A flap opening mechanism 73 must be installed.
[0004]
Further, if the short side flaps Aa, Aa and the long side flaps Ab, Ab of the cardboard box A are opened and supplied to the automatic sealing machine (not shown), the cardboard box A may be damaged or stagnated. Therefore, the short side flaps Aa, Aa and the long side flaps Ab, Ab of the cardboard box A have to be restored to their proper postures, not only taking time and effort for the sealing of the packaging bag B, A mechanism for opening the short side flaps Aa, Aa and the long side flaps Ab, Ab of the cardboard box A, and a mechanism for restoring the short side flaps Aa, Aa and the long side flaps Ab, Ab. The mechanism must be provided in one apparatus, and the configuration and structure of the entire apparatus are complicated, resulting in an increase in manufacturing cost.
[0005]
In view of the above problems, the present invention keeps the flaps formed on the other side opposite sides of the box standing upright, and evacuates and seals the bag body laid on the box body. It is an object of the present invention to provide a bag sealing device that can easily perform a bag sealing operation and a box sealing operation, and can simplify the configuration and structure of the entire device.
[0006]
[Means for Solving the Problems]
In the bag sealing device according to claim 1 of the present invention, two bag tension bars are pivotally supported at the upper position facing each flap formed on one side opposite side of the box, Each bag tension bar is inserted into the bag slot and provided with bag tension means for rotating in the bag tension direction, on the opposite side of the box.Stand upTwo bag pressing plates are arranged on both sides facing each formed flap,Above standingBetween the opposing surfaces of each flap and bagLower each bag pressing plateInsertElevating means for causing the flap pressing plates to remain in a state where the flaps are raised.Move in the bag pressing directionIt was composed of advance and retreat meansA bag evacuation unit is provided, and two bag winding rods are arranged in a horizontal direction at a height position opposite to the bag opening that is tensioned by the bag tensioning unit. The bag sealing device is provided with a bag winding means for inserting a bag inlet inserted between the rods by the bag tension bars and rotating in the bag winding direction.
[0007]
The bag sealing device according to claim 2 of the present invention is combined with the configuration according to claim 1,The bag pressing plate is provided with auxiliary means for supporting the folded flaps formed on the one side facing side when the bag pressing plate is lowered and inserted.Two bag insertion plates are suspended from the upper positions facing both ends of the bag body wound by the bag winding means, and the bag insertion plates are bags along the front and rear inner wall surfaces inside the box body. A bag sealing device provided with bag insertion means that moves up and down in a direction in which both ends of the body are vertically inserted.
[0008]
[Action]
The bag sealing device according to claim 1 of the present invention drives the bag tensioning means to tension the bag slot laid inside the box with the two bag tensioning rods. Each flap formed on one side opposite side is opened with two bag tension bars. Next, the bag venting means is driven,Insert each of the two bag press plates between the flaps and the bags that are raised and the flaps are standing,The two sides of the bag body, which is tensioned by the two bag tension bars, are pressed by the two bag pressing plates and evacuated. Next, the bag winding means is driven, and the bag body is sealed with the two bag winding rods by winding the bag slot inserted by the two bag tensioning rods. The box can be easily sealed.
[0009]
The bag sealing device according to claim 2 of the present invention is combined with the operation according to claim 1,Each flap formed on the one side opposite side is supported in a folded state by auxiliary means provided on the bag pressing plate. Also,By driving the bag insertion means and inserting the two ends of the bag wound by the bag winding means vertically along the front and rear inner wall surfaces inside the box with the two bag insertion plates, The user can save the trouble of inserting both ends of the bag into the box.
[0010]
【The invention's effect】
According to the present invention, the bag inlet covered with the opening on the upper surface side of the box body is mechanically wound while the flaps formed on the opposite sides of the box body are raised. In order to seal, it is not necessary to provide each mechanism for opening and restoring each flap of the box as in the conventional example, and it is possible to simplify the configuration and structure of the entire apparatus and reduce the manufacturing cost. . In addition, since the opening side of the bag body that has been tensioned by the two bag tension bars is sequentially pressed from the lower side by the two bag pressing plates from the lower side, air is extracted, so that the filling material stored in the bag body is sucked. Can be inserted and stored along the front and rear inner wall surfaces inside the box, with the bag opening being wound and sealed to a size that can be stored inside the box, The bag can be easily sealed and the box can be easily sealed. And when taking out the filling and metal parts stored in the bag body, the bag body is unwound and opened, so there is no need to break or tear the bag body and use the bag body repeatedly. Can do. In addition, the opening of each flap formed on one side opposite side of the box body and the trouble of inserting and storing both ends of the wound bag body into the box body by the operator's hands are eliminated, and the bag body is sealed. The processing time required for the work can be shortened, and the labor can be saved and the efficiency can be improved.
[0011]
【Example】
An embodiment of the present invention will be described in detail with reference to the drawings.
The drawings show a bag sealing device used for the operation of sealing a packaging bag covered with a corrugated cardboard box as an example of a box body. In FIGS. 1 and 2, this bag sealing device 1 is a filling step in the previous stage of the device. The cardboard box A 2 transported in the box feed direction from the cardboard box A supplied from (not shown) and the cardboard box A transported to the box stop position on the box feed conveyor 2 are lifted to an appropriate height. A box lifting mechanism 3, a bag lifting mechanism 4 that lifts the inlet Ba of the packaging bag B covered with the short side flaps Aa, Aa and the long side flaps Ab, Ab of the cardboard box A, and the packaging The bag tensioning mechanism 5 that tensions the bag B in the front-rear direction with the charging port Ba raised, and the bag venting that depressurizes the bag B in the horizontal direction while pressing the charging port Ba. While the mechanism 6 and the inlet Ba of the packaging bag B are evacuated And Fukuromaki times mechanism 7 times, and a bag insertion mechanism 8 which is inserted in the longitudinal gap remains cardboard box A in a state of winding the inlet Ba of the packaging bag B.
[0012]
As shown in FIG. 4, the above-mentioned corrugated cardboard box A has a packaging bag B formed of a transparent or translucent synthetic resin film opened upward and laid inside the corrugated cardboard box A assembled in a box shape. Each of the short side flaps Aa, Aa standing on the short side portion of the cardboard box A and the long side flaps Ab, Ab standing on the long side portion are folded back in two. And fixed. In addition, for example, a predetermined amount of a metal material such as a packing material such as a powdery material or a granular material, or a bolt or nut coated with rust-preventive oil is put into the packaging bag B laid in the cardboard box A. Yes.
[0013]
The above-mentioned box feed conveyor 2 has a plurality of feed rollers 10... Arranged at predetermined intervals with respect to the box feed direction between the respective mounting frames 9, 9 installed in parallel to the box feed direction. The feed roller 10 is rotated in the box feed direction via the sprockets 12, 13, 14 and the drive chain 15 by the driving force of the feed motor 11 with a speed reducer that is mounted on the lower end side. The cardboard boxes A supplied from the previous filling step (not shown) are aligned and conveyed in the box feeding direction.
[0014]
Further, the stopper 16 is provided so as to be able to appear and retract immediately before the box stop position set on the box feed conveyor 2, and the stopper 18 is provided so as to be able to appear and retract immediately after the box stop position. The piston rods of the cylinders 17 and 19 are connected to the stoppers 16 and 18, respectively, and the stoppers 16 and 18 are caused to appear and retract on the transport surface of the box conveyor 2 by the operation of the cylinders 17 and 19, respectively. The cardboard box A is temporarily stopped by the stopper 16 immediately before the box stop position, and the previous cardboard box A is temporarily stopped by the stopper 18 at the box stop position.
[0015]
The aforementioned box lifting mechanism 3 is provided with a box lifting / lowering base 20 that can be moved up and down at a lower portion of a box stop position set on the box feeding conveyor 2, and is inserted between the feeding rollers 10 that are pivoted at the same position. Each box mounting frame 20a... Is vertically provided on the upper surface side of the box lifting platform 20, and a screw shaft 21 which is vertically supported at the lower center of the same position, and a nut portion 22 fixed to the lower central portion of the box lifting platform 20. Are screwed together, and the screw shaft 21 is rotated forward and backward through the sprockets 24 and 25 and the drive chain 26 by the driving force of the elevating motor 23 with a speed reducer disposed at the same position side, thereby raising and lowering the box. Each box mounting frame 20a of the table 20 is raised and stopped at a raised position protruding above the conveying surface of the box feeding conveyor 2 and a lowered position immersed below the conveying surface of the box feeding conveyor 2.
[0016]
The above-described bag lifting mechanism 4 has the support shafts 27 and 27 mounted on both sides of the lower portion of the box stop position set on the box feed conveyor 2 in parallel with the box feed direction. The lower ends of the movable frames 28, 28 formed in a length projecting upward from the box conveyor 2 are connected and fixed, and the piston rods of the pressing cylinders 29, 29 disposed on both lower sides are connected to the movable frames. It connects with the intermediate part of 28,28. In addition, each of the two sheets formed in the width dimension corresponding to the long side flaps Ab, Ab of the cardboard box A at the piston rod upper ends of the lifting cylinders 30, 30 fixed to the left and right movable frames 28, 28, respectively. The bag lifting plates 31 and 31 are fixed, and the bag lifting plates 31 and 31 are inclined and fixed at an appropriate angle that becomes narrower toward the top.
[0017]
That is, by the operation of the pressing cylinders 29, 29, the closed angle position where the bag lifting plates 31, 31 are pressed against the left and right side surfaces of the cardboard box A lifted by the box lifting platform 20, and the corrugated cardboard box. The movable frames 28 and 28 are swung left and right at the opening angle positions where the bag lifting plates 31 and 31 are spaced apart from each other on both the left and right sides of A. In addition, when the lifting cylinders 30 and 30 are operated, the lowering positions facing the left and right side surfaces of the cardboard box A lifted by the box lifting platform 20 and the packaging bag B covered with the cardboard box A are charged. The bag lifting plates 31, 31 are moved up and down to the raised position where the mouth Ba is lifted.
[0018]
The above-described bag tensioning mechanism 5 has an attachment frame 32 installed above the box stop position set on the box feed conveyor 2, and each of the lifting cylinders 33, 33 fixed vertically to the front and rear portions on the upper surface side of the attachment frame 32. Pistons of the respective rotation cylinders 35, 35, which are pivotally supported by two lower bag tension bars 34, 34 at the lower end of the piston rod so as to be pivotable forward and backward, and fixed to the piston rod side ends of the respective lift cylinders 33, 33. The lower end of the rod is connected to the base end of each bag tension bar 34, 34.
[0019]
That is, by the operation of the lifting cylinders 33, 33, the lowered position inserted between the short-side flaps Aa, Aa of the cardboard box A lifted by the box lifting platform 20, and the shorts of the cardboard box A, respectively. Each bag tension bar 34, 34 is moved up and down to the raised position pulled out between the hand side flaps Aa, Aa. Further, by the operation of each of the rotating cylinders 35, 35, the closed angle position inserted between the short side flaps Aa, Aa of the cardboard box A lifted by the box lifting platform 20, and each of the cardboard boxes A Each bag tension bar 34, 34 is rotated back and forth to the open side position where the short side flaps Aa, Aa are opened in the front-rear direction and the insertion port Ba of the packaging bag B is held in a properly tensioned state.
[0020]
In the bag venting mechanism 6 described above, a mounting frame 36 is installed at an upper part on the front side of the box stop position set on the box feeding conveyor 2 in a direction perpendicular to the box feeding direction, and is horizontally installed on the front side of the mounting frame 36. The movable bases 38 and 38 are mounted between the two guide rails 37 and 37 so as to be movable left and right, respectively, and the piston rods of the forward and backward moving cylinders 39 and 39 fixed to the center of the front side of the mounting frame 36 are movable. The bag pressing plates 45, 45, which will be described later, are retracted at intervals allowing the bag lifting operation by the bag lifting mechanism 4 by the operation of the cylinders 39, 39 connected to the bases 38, 38. The retracted position, the intermediate position where the bag pressing plates 45, 45 are vertically inserted along the long side flaps Ab, Ab of the cardboard box A, and the opening side of the packaging bag B that has been tensioned by the bag tensioning mechanism 5 described above, Before pressing with bag pressing plates 45, 45 Each carriage 38, 38 to the left and right moves to the position.
[0021]
Each of the above-mentioned movable bases 38, 38 is attached with each of the lifting bases 41, 41 between the two guide rails 40, 40 vertically installed on the front side of each of the movable bases 38, 38 so as to be movable up and down. The piston rods of the lifting cylinders 42, 42 fixed to the upper surfaces of the movable bases 38, 38 are connected to the lifting bases 41, 41. From the lowered position where each of the bag pressing plates 45, 45 described later is inserted between the long side flaps Ab, Ab of the cardboard box A lifted by the lifting platform 20, and between the long side flaps Ab, Ab of the cardboard box A. The elevators 41 and 41 are moved up and down to the raised position where the bag pressing plates 45 and 45 are pulled out.
[0022]
In each of the above-described lifting platforms 41, 41, two support arms 43, 43 are fixed in parallel to the box feed direction at the center of the front side of each of the lifting platforms 41, 41. Two bag pressing plates formed between the support plates 44 fixed to the lower surface of the front end side of 43, respectively, in a size corresponding to the insertion port Ba of the packaging bag B strained by the bag tensioning mechanism 5 described above. 45 and 45 are pivotally supported, and two bag pressing rollers 46 and 46 are pivoted in parallel with the left and right side surfaces of the cardboard box A at the center of the lower ends of the bag pressing plates 45 and 45, respectively. The auxiliary rollers 47 and 47 are pivotally supported on both sides of the lower end of the one bag pressing plate 45 so as to face the short side flaps Aa and Aa of the cardboard box A.
[0023]
And between each support piece 48,48 fixed to the front end side upper surface of each support arm 43,43, and each support piece 49,49 fixed to the upper-end center part of each bag press board 45,45, two pieces are provided. The direction which presses the insertion port Ba of the packaging bag B tension | tensile_strengthed by the above-mentioned bag tension | tensile_strength mechanism 5 with each spring 51,51 compression-loaded on each said adjustment screw 50,50 while connecting with each adjustment screw 50,50. The bag pressing plates 45, 45 are urged to rotate, and the bag pressing plates 45, 45 are controlled to rotate at an appropriate inclination angle that becomes narrower downward by rotating the adjusting screws 50, 50. are doing.
[0024]
As shown in FIG. 3, the bag winding mechanism 7 has an attachment frame 52 installed on the upper part of the rear side of the box stop position set on the box feed conveyor 2 in parallel with the box feed direction. Operation of a rodless type advance / retreat cylinder 55 which is attached to a movable base 54 between two guide rails 53, 53 installed horizontally on the slope side of 52 and is movable in the front-rear direction and fixed to the center of the front side of the mounting frame 52. Thus, the insertion position Ba of the packaging bag B that is tensioned by the above-described bag tensioning mechanism 5 is inserted between the bag winding rods 61 and 61, which will be described later, and the insertion port Ba of the packaging bag B is wound around each bag. The movable base 54 is moved back and forth to the retracted position where it is pulled out between the rotating rods 61 and 61.
[0025]
On the above-mentioned movable table 54, an elevator table 57 is attached between the two guide rails 56, 56 vertically installed on the front side of the movable table 54 so as to be movable up and down, and fixed to the upper surface side of the movable table 54. By connecting the piston rod of the lifting cylinder 58 to the lifting platform 57 and operating the lifting cylinder 58, each bag winding rod 61, which will be described later, on the opening side of the packaging bag B that has been tensioned by the above-described bag tensioning mechanism 5. , 61 and the lifting platform 57 is moved up and down to a rising position where the packaging bag B is wound around the opening side of the packaging bag B by a plurality of bag winding rods 61, 61.
[0026]
A support arm 59 is fixed to the above-described lifting platform 57 at the center on the front side of the lifting platform 57 in a direction orthogonal to the box feeding direction, and a rod turntable 60 is mounted on the vertical surface on the front end side of the supporting arm 59 in the box feeding direction. And a pinion 62 pivotally supported on a vertical surface on the base end side of the support arm 59 and a rack portion 63 erected on one side edge of the movable base 54. The opening side of the packaging bag B that is tensioned by the above-described bag tensioning mechanism 5 through the pinion 62, the rack portion 63, the pulleys 64 and 65, and the drive belt 66 by the vertical movement of the lifting platform 57. The rod turntable 60 is rotated in the direction of winding with each bag winding rod 61, 61 described later.
[0027]
In addition, two bag winding rods 61 and 61 formed in a longer dimension than the insertion port Ba of the packaging bag B that has been tensioned by the bag tensioning mechanism 5 are provided at the center of the front surface side of the bar turntable 60. Each spring 67 is connected between the opposing surfaces of the operation pieces 61a and 61a that are rotatably connected and project from the base end portions of the bag winding rods 61 and 61, and both end portions on the front surface side of the rod turntable 60. , 67 are compressed and loaded, and the two bag winding rods 61, 61 are normally urged to rotate in the closing direction.
[0028]
In addition, an opening / closing arm 68 is pivotally supported on the top end portion of the support arm 59 so as to be pivotable back and forth, and a piston rod of an opening / closing cylinder 69 fixed to the top end portion of the support arm 59 is connected to the upper end of the opening / closing arm 68. By operating the opening / closing cylinder 69, the operation pieces 61 a, 61 a protruding from the two bag winding rods 61, 61 are moved against the springs 67, 67 by the opening / closing arm 68. Each of the two bags is wound into an opening interval in which the opening side of the packaging bag B pressed and tensioned by the bag tensioning mechanism 5 is easily inserted, and a parallel interval in which the opening side of the packaging bag B is wound. The rods 61 and 61 are opened and closed.
[0029]
The above-described bag insertion mechanism 8 has a lower end of a piston rod of a lifting cylinder 70 in which an attachment frame 32 is installed above the box stop position set on the box feed conveyor 2 and is vertically fixed to a central portion on the upper surface side of the attachment frame 32. The lift frame 71 is connected to the upper part, and the two bag insertion plates 72 and 72 are vertically fixed to the lower and lower front and rear parts of the lift frame 71 at intervals inserted along the front and rear inner wall surfaces of the cardboard box A. By the operation of the lifting / lowering cylinder 70, the bag insertion plates 72, 72 are vertically inserted along the front and rear inner wall surfaces of the cardboard box A lifted by the box lifting platform 20, and the bag The elevating frame 71 is moved up and down to a raised position where the bag insertion plates 72 and 72 are retracted to a height position where the front and rear movements of the bag winding rods 61 and 61 constituting the winding mechanism 7 are allowed.
[0030]
The illustrated embodiment is configured as described above, and the operation when the packaging bag B covered by the cardboard box A is sealed by the bag sealing device 1 will be described below.
First, as shown in FIG. 1, the cardboard boxes A supplied from the filling process (not shown) at the front stage of the apparatus are sequentially transported to the box stop position on the box feed conveyor 2, and the retracting cylinders 17 and 19 are operated. Then, the preceding cardboard box A is temporarily stopped at the box stop position by the stopper 18, and the subsequent cardboard box A is temporarily stopped by the stopper 16 immediately before the box stop position.
[0031]
Next, as shown in FIG. 5, immediately after transporting the cardboard box A to the box stop position on the box feed conveyor 2, the lifting / lowering motor 23 of the box lifting / lowering mechanism 3 was driven to stop transporting to the same position. The cardboard box A is once lifted to an appropriate height by the box lifting platform 20. And the height cylinders 33 and 33 of the bag tensioning mechanism 5 are operated to insert the two bag tensioning bars 34 and 34 between the short side flaps Aa and Aa of the cardboard box A. When the cardboard box A is lifted to an appropriate height by the box lifting platform 20, the two bag tension bars 34 between the short flaps Aa, Aa of the cardboard box A, 34 is inserted in a state where it is rotated to the closed angle position.
[0032]
Next, as shown in FIG. 6, the pressing cylinders 29 and 29 of the bag lifting mechanism 4 are actuated to lift the bag lifting to the left and right sides of the cardboard box A lifted by the box lifting platform 20 described above. After pressing the plates 31, 31, the lifting cylinders 30, 30 are actuated, and the packaging bags B covered with the short side flaps Aa, Aa and the long side flaps Ab, Ab of the cardboard box A are loaded. The mouth Ba is lifted by the bag lifting plates 31, 31.
[0033]
At the same time, as shown in FIG. 7, the rotation cylinders 35, 35 of the bag tensioning mechanism 5 are actuated so that the input port Ba of the packaging bag B lifted by the above-described bag lifting plates 31, 31 is provided for each bag. After the tension bars 34, 34 are tensioned in the front-rear direction and only the short side flaps Aa, Aa of the cardboard box A are folded in the front-rear direction by the bag tension bars 34, 34, the pressing cylinders 29, 29 and the lifting cylinders 30 and 30 are returned to return the two bag bag raising plates 31 and 31 to their initial positions.
[0034]
Next, as shown in FIG. 8, each advancement / retraction cylinder 39, 39 of the bag evacuation mechanism 6 is actuated to move each bag pressing plate 45, 45 forward to an intermediate position where it is inserted into the cardboard box A. After that, the lifting cylinders 42 and 42 are sequentially operated so that the left and right bag pressing plates 45 and 45 are sequentially inserted into the cardboard box A, and the auxiliary rollers 47 and 46 pivotally supported on the one bag pressing plate 45. 47, the short side flaps Aa, Aa of the cardboard box A are supported in a folded state in the front-rear direction.
[0035]
At the same time, the lifting cylinders 33 and 33 of the bag tensioning mechanism 5 are actuated to raise and stop the two bag tensioning bars 34 and 34 at positions slightly higher than the longitudinal flaps Ab and Ab of the cardboard box A. Thereafter, as shown in FIG. 9, the cylinders 39 and 39 for advancing and retreating are sequentially operated so that the opening side of the packaging bag B that is tensioned by the bag tensioning bars 34 and 34 is applied to the bag pressing plates 45 and 45. While pressing with the bag pressing rollers 46 and 46 that are pivotally supported, the bag pressing plates 45 and 45 are sequentially pressed from below to evacuate the air in the packaging bag B.
[0036]
Next, the cylinders 39, 39 for advancing and retreating are moved back to move the left and right bag pressing plates 45, 45 back to the intermediate positions. Then, as shown in FIGS. The opening / closing cylinder 69 is operated to rotate and fix the two bag winding rods 61, 61 at the open intervals. Thereafter, the advance / retreat cylinder 55 is moved forward, and the opening side of the packaging bag B, which is tensioned by the bag tension bars 34, 34, is inserted between the two bag winding bars 61, 61 to open and close. The cylinder 69 for return is actuated to return the two bag winding rods 61 and 61 to the parallel interval for winding the opening side of the packaging bag B.
[0037]
At the same time, the respective cylinders 35 and 35 for rotation of the bag tensioning mechanism 5 are actuated to rotate the two bag tensioning bars 34 and 34 to the closed angle position, and then the bag winding mechanism 7 as shown in FIG. The cylinder 58 for raising and lowering is actuated, and the insertion port Ba of the packaging bag B that is tensioned by the two bag tension bars 34 and 34 is lowered while being wound by the two bag winding bars 61 and 61. . Thereafter, the advancing / retreating cylinder 55 is moved backward, the lifting / lowering cylinder 58 is returned, and the two bag winding rods 61, 61 are pulled out from the wound packaging bag B to return to the initial position.
[0038]
In addition, the lifting cylinders 42, 42 and the advancing / retreating cylinders 39, 39 of the bag evacuating mechanism 6 are reset to return the two bag pressing plates 45, 45 to their initial positions, and the bag tensioning mechanism 5 Each of the rotation cylinders 35 and 35 is operated to rotate the two bag tension bars 34 and 34 to the open angle position.
[0039]
Next, as shown in FIG. 12, by operating the lifting cylinder 70 of the bag insertion mechanism 8, each bag insertion plate 72, along the front and rear inner wall surfaces of the cardboard box A placed on the box lifting platform 20, 72 is vertically inserted, and after inserting the ear portions Bb and Bb of the packaging bag B wound by the bag winding rods 61 and 61 into the front and rear gaps of the cardboard box A, the lifting and lowering cylinder 70 is restored. Then, each of the two bag insertion plates 72, 72 is returned to the initial position.
[0040]
Thereafter, the lifting / lowering motor 23 of the box lifting / lowering mechanism 3 is driven in reverse to temporarily transfer the cardboard box A placed on the box lifting / lowering base 20 onto the box feeding conveyor 2, and the sealing process ( The cardboard box A is transported and supplied to the cardboard box A, and the short side flaps Aa, Aa and the long side flaps Ab, Ab of the cardboard box A are alternately folded and sealed.
[0041]
Similarly, the mechanisms 3, 4, 5, 6, 7, and 8 are sequentially driven to raise the input port Ba of the packaging bag B covered with the next cardboard box A, and the input port of the same packaging bag B. After winding Ba, it is inserted into the front and rear gaps of the cardboard box A and supplied to the sealing step (not shown).
[0042]
As described above, the packaging bag B covered with the opening on the upper surface side of the cardboard box A is put in a state where the long side flaps Ab, Ab formed on the long side edges of the cardboard box A are raised. In order to mechanically seal the mouth Ba, it is necessary to provide each mechanism for opening and restoring the short side flaps Aa, Aa and the long side flaps Ab, Ab of the cardboard box A as in the conventional example. Therefore, the configuration and structure of the entire apparatus can be simplified, and the manufacturing cost can be reduced.
[0043]
Moreover, since the opening side of the packaging bag B that has been tensioned by the two bag tensioning rods 34 and 34 is sequentially pressed from below by the two bag pressing plates 45 and 45, the packaging bag B is evacuated. The filling material stored in the packaging bag B is not sucked out, and the inlet Ba of the packaging bag B is wound and sealed to a size that can be stored in the cardboard box A, and each ear Bb, Bb of the packaging bag B is The cardboard box A can be inserted and stored along the front and rear inner wall surfaces, and the packaging bag B can be sealed and the cardboard box A can be easily sealed. And when taking out the filling and metal part which were accommodated in the packaging bag B, since the opening Ba of the packaging bag B is unwound and opened, it is not necessary to tear or tear the packaging bag B, and the packaging bag B can be used repeatedly. In addition, the operation of opening the respective short side flaps Aa, Aa of the cardboard box A and the trouble of inserting and storing the respective ear portions Bb, Bb of the packaging bag B into the cardboard box A by the operator's hand can be omitted. Therefore, it is possible to shorten the processing time required for the blockade operation, and to save labor and increase the efficiency of the operation.
[0044]
In the correspondence between the configuration of the present invention and the above-described embodiment,
The box of this invention corresponds to the cardboard box A of the embodiment,
Similarly,
The bag corresponds to the packaging bag B,
The bag tension means corresponds to the bag tension mechanism 5 and the bag tension bars 34, 34,
The bag venting means corresponds to the bag venting mechanism 6, the bag pressing plates 45, 45, and the bag pressing rollers 46, 46,
The bag winding means corresponds to the bag winding mechanism 7 and each bag winding rod 61, 61,
The bag insertion means is connected to the bag insertion mechanism 8 and each of the bag insertion plates 72 and 72.And
Each advance / retreat means corresponds to each advance / retreat cylinder 39, 39,
Each lifting means corresponds to each lifting cylinder 42, 42,
Auxiliary means corresponds to each auxiliary roller 47, 47Yes,
The present invention is not limited to the configuration of the above-described embodiment.
[0045]
In the above-described embodiment, the mechanisms 4, 5, 6, 7, and 8 disposed at the box stop positions on the box feed conveyor 2 are driven, and the short side flaps Aa and Aa of the cardboard box A are moved in the front-rear direction. Opening and closing the inlet Ba of the packaging bag B covered with the cardboard box A, for example, each longitudinal side flap Ab of the cardboard box A conveyed to the box stop position on the box feed conveyor 2 , Ab may be opened in the left-right direction, and the inlet Ba of the packaging bag B covered with the cardboard box A may be wound and sealed.
[Brief description of the drawings]
FIG. 1 is a side view showing a state where conveyance of a cardboard box is stopped at a box stop position of a bag sealing device.
FIG. 2 is a front view showing a state where conveyance of a cardboard box is stopped at a box stop position of the bag sealing device.
FIG. 3 is a plan view showing a rod opening / closing operation of the bag winding mechanism.
FIG. 4 is a perspective view showing a bag covering state of a cardboard box.
FIG. 5 is a side view showing a box lifting operation of the box lifting mechanism.
FIG. 6 is a front view showing a bag lifting operation of the bag lifting mechanism.
FIG. 7 is a side view showing the bag tensioning operation of the bag tensioning mechanism.
FIG. 8 is a front view showing a bag evacuation operation of the bag evacuation mechanism.
FIG. 9 is a plan view showing a state in which a packaging bag is vented.
FIG. 10 is a side view showing the bag winding operation of the bag winding mechanism.
FIG. 11 is a side view showing a wrapped state of the packaging bag.
FIG. 12 is a side view showing the bag insertion operation of the bag insertion mechanism.
FIG. 13 is a perspective view showing a conventional bag sealing method.
[Explanation of symbols]
A ... Cardboard box
Aa ... Short side flap
Ab: Long side flap
B ... Packing bag
Ba ... Inlet
Bb ... Ear
1 ... Bag sealing device
2 ... Box feed conveyor
3 ... Box lifting mechanism
4 ... Bag lifting mechanism
5 ... Bag tension mechanism
6 ... Bag venting mechanism
7 ... Bag winding mechanism
8 ... Bag insertion mechanism
20 ... Box lifting platform
31 ... Bag raising plate
34 ... bag tension stick
39 ... Advance / retreat cylinder
42 ... Cylinder for lifting
45 ... Bag pressing plate
46 ... Bag pressing roller
47 ... Auxiliary roller
61 ... Bag winding rod
72. Bag insertion plate

Claims (2)

A bag sealing device for opening and laying a bag body upwards inside a box body assembled in an open top form, and winding and sealing a charging port of the bag body laid inside the box body,
Two bag tension bars are pivotally supported at the upper position facing each flap formed on one side opposite side of the box body, and the bag tension bars are inserted into the bag slot. Provided with a bag tension means that rotates in the bag tension direction,
Two bag pressing plates are arranged at both side positions facing each flap formed standing on the other side opposite side of the box,
Elevating means for lowering and inserting each bag pressing plate between the opposed surfaces of each of the raised flaps and the bag body, and advancing and retreating moving each of the bag pressing plates in the bag pressing direction with the respective flaps standing. Providing a bag evacuation means comprising the means,
Two bag winding rods are arranged in a horizontal position at a height position opposite to the bag slot, which is tensioned by the bag tensioning means, and each bag tension is placed between the bag winding rods. A bag sealing device provided with a bag winding means for inserting a bag body insertion port that is tensioned by a stick and rotating in a bag winding direction. The bag pressing plate is provided with auxiliary means for supporting the folded flaps formed on the one side facing side when the bag pressing plate is lowered and inserted.
Two bag insertion plates are suspended from the upper positions facing both ends of the bag body wound by the bag winding means, and the bag insertion plates are bags along the front and rear inner wall surfaces inside the box body. The bag sealing apparatus according to claim 1, further comprising bag insertion means that moves up and down in a direction in which both ends of the body are vertically inserted.

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