JP3575808B2 - Cutting device for adhesive tape for sealing of packaging equipment - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a packaging device for mainly processing agricultural products such as vegetables such as lettuce and cabbage, and fruits such as melon and apple.
[0002]
[Prior art]
As a packaging device for agricultural products, for example, a so-called heat-sealing type packaging device has been put into practical use, in which a packaging sheet made of a resin film wrapping an article to be packaged is narrowed, and the narrowed portion is heated and welded with a heater and sealed. ing.
[0003]
[Problems to be solved by the invention]
The above-mentioned heat seal type packaging apparatus has the following problems.
{Circle around (1)} The packaging sheet needs to be a heat-meltable resin film, and the material of the packaging sheet is limited.
{Circle over (2)} Depending on conditions such as heating temperature, heating time, and ambient atmosphere, there is a possibility that welding may be excessive or insufficient, and complicated and expensive heater control means is required to perform appropriate heat sealing.
(3) The heat-welded narrowed portion may be denatured and become brittle due to thermal effects, and during transportation after packaging is completed, the welding may easily come off due to vibration or external force, and the package may be unraveled. There is.
(4) Since the narrowed welding portion is hard and protrudes, the protruding narrowed welding portion hinders the alignment and hinders the packing into the packing container. There is also a risk that the packaging sheet may be broken by touching it.
[0004]
The present invention has been made by paying attention to such a point, and by using an adhesive tape for sealing a narrowed portion, it is possible to solve the above-mentioned problems observed in the heat sealing type sealing and It is an object of the present invention to ensure that a pressure-sensitive adhesive tape piece necessary for sealing can be supplied.
[0005]
[Means for Solving the Problems]
[Structure, operation and effect of the invention according to claim 1]
[0006]
(Structure) The sealing pressure-sensitive adhesive tape cutting device of the packaging device according to the first aspect of the present invention is configured to squeeze a packaging sheet wrapping an article to be packaged, and affix an adhesive tape piece to the narrowed portion to seal. An adhesive tape supply mechanism for sealing of the packaging device, a pressure-sensitive adhesive tape roll held at a predetermined position, a tape holding unit that holds the tip of the pressure-sensitive adhesive tape pulled out from the pressure-sensitive adhesive tape roll at a fixed position, A tape withdrawing unit that releases the adhesive tape from the tape holding unit and pulls out the tape holding unit to a position separated by a predetermined distance from the tape holding unit, and a pressing member that presses an intermediate portion of the pulled out adhesive tape against the tape holding unit, The adhesive tape is cut at a position where the tape is pulled out from the position where the tape is held and fixed by the tape holding portion and the pressing member, and the tape is pulled to the tape drawing means at the tip side. And a cutter for forming a piece of adhesive tape holding the sheet.
[0007]
(Operation) According to the above configuration, in the initial state, the adhesive tape pulled out from the adhesive tape roll is on standby with its leading end held by the tape holding unit. When the tape supply operation is started, first, the tape pulling means holds the leading end side of the adhesive tape, releases the tape from the tape holding portion, and performs the pulling operation. When the adhesive tape is pulled out to a position away from the tape holding portion by a predetermined distance, the pressing member operates by pressing the drawn adhesive tape against the tape holding portion, and the intermediate portion of the adhesive tape is held between the tape holding portion and the pressing member. The tape is fixed, and the tape is cut by the cutter in this state. As a result, a piece of the adhesive tape whose front end is held by the tape pull-out means or cut to a predetermined length is obtained.
Further, when the pressing member retreats and returns, the tape portion pinched and fixed between the tape holding portion and the pressing member is continuously held by the tape holding portion, and enters an initial standby state in preparation for the next tape supply operation.
[0008]
(Effects) Therefore, according to the first aspect of the present invention, since the drawn adhesive tape is cut while being clamped and fixed, the formed adhesive tape piece has high dimensional accuracy, which is necessary for sealing the packaging sheet. Adhesive tape pieces of an appropriate length can be accurately obtained. Moreover, the tape pull-out operation, the cutting operation, and the return operation to the standby state for the next tape supply operation of a predetermined length can be executed in series without waste, and the adhesive tape piece of the desired length with high dimensional accuracy can be performed. Can be obtained simply and reliably.
[0009]
[Structure, operation and effect of the invention according to claim 2]
[0010]
(Structure) In the cutting device of the sealing adhesive tape of the packaging device according to the second aspect of the present invention, in the invention according to the first aspect, the tape withdrawing unit conveys the held adhesive tape piece to a sticking processing location. It is configured as follows.
[0011]
(Operation) According to the above configuration, after the tape withdrawing means performs a tape withdrawing operation of a predetermined length to obtain a piece of adhesive tape having a desired length, the tape withdrawing means does not need to be switched to another conveying means. In this way, the piece of adhesive tape can be directly conveyed to the sticking point.
[0012]
(Effects) Therefore, according to the second aspect of the present invention, a dedicated transporting means for transporting the adhesive tape piece to the sticking point is not required, which is effective for simplifying the entire structure of the packaging device, and is effective for holding. This eliminates the need for additional time and is effective in shortening the sticking process cycle.Because it does not change the adhesive tape pieces, there is no problem with tape misalignment that tends to occur when switching, and it is possible to perform sticking with accurate positioning. In addition to providing the above-described effect of the first aspect, the present invention can be particularly effectively used in supplying a sealing adhesive tape in a packaging device.
[0013]
[Structure, operation and effect of the invention according to claim 3]
[0014]
(Configuration) The sealing adhesive tape supply mechanism for a packaging device according to the third aspect of the present invention, in the invention according to the first or second aspect, is configured such that the cutter is movable between a cutting position and a standby position, In conjunction with the movement of the cutter to the tape cutting position, the cutter and the pressing member are interlocked and connected so as to move the pressing member closer to the tape holding portion,
In the interlocking system between this cutter and the holding member, With the movement of the cutter to the tape cutting position, before cutting the tape, the pressing member clamps the adhesive tape in cooperation with the tape holding unit, And In a state where the holding member clamps and fixes the adhesive tape in cooperation with the tape holding unit, so that the cutter continues to move to the tape cutting position, A spring that biases the holding member toward a side preceding the cutter, and that sets an action range of the biasing force so as to allow the cutter to move to the tape cutting position beyond the nipping and fixing portion. Intervening.
[0015]
(Operation) According to the above configuration, by moving the cutter from the standby position to the tape cutting position, the pressing member can be moved from the standby position to the pressing operation position, and in the series of operations, the pressing member is first. Cooperates with the tape holding part to pinch and fix the middle part of the adhesive tape that has been pulled out.After that, only the cutter continues to move with the holding member in the tape holding position, and from the tape holding and fixing point First, the adhesive tape is cut.
[0016]
(Effects) Therefore, according to the third aspect of the present invention, since the pressing member and the cutter operate at different timings, the pressing member is interlocked with the cutter, so that a driving mechanism for operating the pressing member exclusively is unnecessary. Thus, the above-described effects of the first or second aspect of the present invention can be obtained, and the structure can be effectively simplified. Moreover, the difference in the action timing between the two intervened in the interlocking system between the two. Setting the direction of the spring biasing force and the range of biasing action Therefore, the structure can be implemented simply and inexpensively, and the practical advantage is great.
[0017]
[Structure, operation and effect of the invention according to claim 4]
[0018]
(Structure) The sealing tape supply mechanism for a packaging device according to the invention according to claim 4 is configured such that, in the invention according to any one of claims 1 to 3, the cutter is biased and returned to a standby position. In addition, the cutter is forcibly moved to a tape cutting position against a return biasing force by a contact pressing operation by a pressing operation unit.
[0019]
(Operation) According to the above configuration, the tape cutting operation with a load is performed by forcibly moving the cutter at an appropriate speed, and the returning movement of the cutter to the standby position where little load is applied is quickly performed by the urging force.
[0020]
(Effects) Therefore, according to the invention as set forth in claim 4, the tape can be cut accurately by forcibly moving the cutter, and the above-described effect of the invention according to any one of claims 1 to 3 is obtained. At the same time, this is effective in performing highly accurate tape cutting, and is also effective in shortening the processing cycle.
[0021]
[Structure, operation and effect of the invention according to claim 5]
[0022]
(Structure) According to a fifth aspect of the present invention, in the sealing tape supply mechanism for a packaging device according to the fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the tape holding unit includes an adhesive tape having an adhesive surface. It is configured to be pasted and held via a.
[0023]
(Operation) According to the above configuration, it is possible to configure a structure that holds the leading end of the adhesive tape at a predetermined position only by installing the tape holding portion, which is a fixing member, at a predetermined position.
[0024]
(Effects) Therefore, according to the invention as set forth in claim 5, the structure of the adhesive tape is simpler than the case where the tip end of the adhesive tape is mechanically held by a clamp mechanism or sucked and held by vacuum suction means. The leading end of the tape can be held at a predetermined position, so that the effects of the invention according to any one of claims 1 to 4 can be obtained, and the structure of the adhesive tape supply mechanism can be simplified.
[0025]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 and 2 show the entirety of the packaging apparatus of the present invention. The packaging operation of this packaging apparatus is performed in the following steps.
That is, the step of dropping the article to be packaged A from above into the opening 2a of the packaging table 2 on which the packaging sheet 1 is placed (this is performed by an operator), and the step of dropping into the opening 2a A step of wrapping the package A in the packaging sheet 1 and supporting the package A on the support 3 below the packaging table 2, the upper side of the packaging sheet 1 wrapping the package A on the support 3. Squeezing the part from the lateral direction, cutting the upper part of the squeezed packaging sheet 1, attaching the adhesive tape 4 to the cut part of the packaging sheet 1, pressing the attached adhesive tape 4 from above, packaging Step of unloading the packaged object A completed from the support table 3 in a horizontal direction, pulling out the rolled packaging sheet 1 by a predetermined length onto the packaging table 2 in preparation for the next packaging, and cutting the roll side portion And take one wrapping sheet 1 A step of placing the Sodai 2.
[0026]
Next, details of the above-described steps and each mechanism will be described in order.
(1)
First, a process in which the worker drops the packaged object A into the opening 2a of the packaging table 2 from above and a step in which the worker supports the packaged object A on the support table 3 below the packaging table 2 will be described. .
As shown in FIG. 2 and FIG. 1, the support base 3 is formed in a bowl shape by the wire and the band plate, and the support base 3 is disposed below the circular opening 2 a of the packaging base 2. A support frame 6 is attached to a pair of left and right guide rails 5 so as to be vertically slidable. The support base 3 is supported on the support frame 6 via a spring 7 for absorbing shock. An operation arm 8 that can swing around the horizontal axis P1 is connected to the support frame 6 by a pin and a long hole structure, and an operation cylinder 9 that swings the operation arm 8 up and down is provided. ing.
[0027]
With the above structure, as shown in FIG. 2 and FIG. 3A, when the worker drops the package A from above into the opening 2a of the packaging table 2, the package A is And fall on the support 3. Then, when the operator operates a start switch (not shown), the operation cylinder 9 contracts and the support base 3 is lowered to the position shown in FIG. 3B, and stops at that position.
[0028]
In this case, as shown in FIGS. 1 and 2, an auxiliary throttle member 11 made of an elastic material is attached to a ring member 10 arranged below the opening 2 a of the packaging table 2. As a result, as shown in FIGS. 3 (a) to 3 (b), when the support table 3 is lowered, the packaging sheet 1 is squeezed by the outer edge of the opening 2a of the packaging table 2 and the action of the auxiliary drawing member 11. The article to be packaged A is wrapped in the packaging sheet 1 to some extent.
[0029]
(2)
Next, a process of narrowing down the upper portion 1a of the packaging sheet 1 wrapping the packaged object A on the support base 3 in the state shown in FIG.
As shown in FIG. 1, a diaphragm mechanism 12 is disposed below the auxiliary diaphragm member 11. As shown in FIGS. 4A and 4B and FIG. 5, the aperture mechanism 12 is a pair of plate-like holding members that are slidable along a pair of left and right guide rails 13 in the vertical direction of FIG. 14, and a pair of auxiliary holding members 16 that are swingable about a longitudinal axis P2 of the fixed portion and are urged in a direction away from each other by a spring 15 and are arranged below the holding member 14.
[0030]
A structure for driving and moving the pair of holding members 14 will be described. As shown in FIGS. 5 and 6, a guide plate 20 having a U-shaped cross section is disposed below one of the guide rails 13, and a pinion gear 21 is supported at the center of the guide plate 20 so as to be freely rotatable. I have. A pair of rack gears 22 are engaged with both sides of the pinion gear 21, and the engaging portions 22 a of the rack gear 22 are engaged with the locking portions 14 b of the holding member 14. An operation cylinder 23 is provided between one of the rack gears 22 and the guide plate 20.
[0031]
With the above structure, when the operation cylinder 23 is contracted from the state shown in FIG. 6, the holding member 14 on the lower side of the drawing of FIG. 4A is moved upward together with the rack gear 22 in the drawing. Then, the operation of the rack gear 22 is reversed by the pinion gear 21 and transmitted to the other rack gear 22, so that the holding member 14 on the upper side of the drawing of FIG. is there.
[0032]
As described above, when the support base 3 descends to the position shown in FIG. 3B, the holding member 14 on the lower side of the paper moves upward in FIG. 4A and the holding member 14 on the upper side of the paper in FIG. Move down. At the same time, a pair of rollers 14c fixed to the holding member 14 on the lower side of the paper abut on the auxiliary holding member 16 and operate the auxiliary holding members 16 so as to approach each other. As a result, as shown in FIGS. 4B and 8, the upper portion 1 a of the packaging sheet 1 is sandwiched by a pair of sandwiching members 14 from above and below the paper surface, and is sandwiched by a pair of auxiliary sandwiching members 16 from above and below the paper surface. It is narrowed down.
[0033]
When such a narrowing-down operation is performed, the packaging sheet 1 is brought to the center and the packaged object A is lifted. At this time, the support cylinder 3 is slightly lifted by the operation cylinder 9 so that the packaged object A is pressed against the lower surfaces of the holding member 14 and the auxiliary holding member 16, and the spring of the support table 3 shown in FIG. 7 is compressed.
[0034]
In this case, as shown in FIGS. 5 and 8, non-adhesive members such as silicone rubber are attached to both end portions 14a of the pair of holding members 14 that sandwich the upper portion 1a of the packaging sheet 1. This is a situation in which the adhesive tape piece 4a adheres to the edge 14a of the sandwiching member 14 when the pair of sandwiching members 14 are separated from each other after the adhesive tape piece 4a is placed as described later. This is to prevent
[0035]
As shown in FIGS. 4A and 7, each of the holding members 14 is provided with a holding arm 17. The holding arm 17 is swingable about the longitudinal axis P3 of the holding member 14, and the holding arm 17 on the upper side of the paper of FIG. The holding arm 17 is urged clockwise in the drawing. The two holding arms 17 are stopped by the stopper 19 in the posture shown in FIG. As a result, when the pair of holding members 14 move as shown in FIG. 4B, the holding arms 17 also move in the same manner, and as shown in FIG. It is sandwiched and held by the holding arm 17.
[0036]
(3)
Next, a process of cutting out the upper part 1a of the squeezed packaging sheet 1 will be described.
As shown in FIGS. 1 and 17, a support frame 25 is slidably supported along a pair of guide rails 24 disposed between the packaging table 2 and the squeezing mechanism 12. A cutting mechanism 26 is fixed to the front end. In this cutting mechanism 26, a guide plate 27 having a guide end 27a that opens forward is fixed to the front end of the support frame 25, and a pair of left and right disk cutters 28 that can freely rotate around a vertical axis are formed on the outer periphery thereof. Are attached to the guide plate 27 so as to be slightly apart from each other so that the blade portions thereof overlap one another up and down.
[0037]
As shown in FIG. 17, the ring member 10 including the auxiliary aperture member 11 is fixed to the support frame 25 via the arm 29, and an operation cylinder 30 for slidingly driving the entire support frame 25 and the like is provided. .
[0038]
With the above structure, when the upper portion 1a of the packaging sheet 1 is squeezed by the squeezing mechanism 12 as shown in FIG. 8, the operation cylinder 30 is contracted and the space of the packaging table 2 is reduced as shown in FIG. The support frame 25 located on the right side advances to the left in the drawing. Then, as shown in FIG. 18 (b), the guide plate 27 and the disk cutter 28 pass between the holding member 14 and the holding arm 17 of the drawing mechanism 12, and cut the upper portion 1a of the packaging sheet 1.
[0039]
In this case, as the upper portion 1a of the packaging sheet 1 is sandwiched between the left and right disk cutters 28 as the support frame 25 advances, the packaging sheet 1 is placed between the left and right disk cutters 28. Is reliably cut off. Then, as shown in FIG. 16A, the upper end of the upper portion 1a of the packaging sheet 1 is fixed by the holding arm 17, and the lower end of the upper portion 1a is fixed by the holding member 14. Even if the disk cutter 28 advances between the holding members 14, the upper portion 1a of the packaging sheet 1 is not pushed down.
[0040]
When the cutting of the upper portion 1a of the packaging sheet 1 is substantially completed as described above, the cut upper portion 1a is sandwiched and carried by the left and right disk cutters 28, and as shown in FIG. The 25 rollers 31 come into contact with the left and right holding arms 17, and as the support frame 25 advances, the holding arms 17 are pushed right and left. This is to prevent the holding arm 17 from hindering the subsequent sticking of the adhesive tape piece 4a.
[0041]
(4)
Next, the step of attaching the adhesive tape 4a to the cutout portion of the packaging sheet 1 will be described.
As shown in FIGS. 9 and 17, a pair of holding members 32 (adhering a rubber material on the surface) for supporting the adhesive tape are fixed to the support frame 25, and the holding roller 33 a for supporting the adhesive tape (on the surface). A balance-shaped holding arm 33 provided with a knurling process) is supported by a spring (not shown) biased clockwise by a spring (not shown) so as to be swingable around a horizontal axis P4 of the support frame 25. ing. Then, a balance-shaped holding arm 34 provided with a holding roller 34a for supporting the adhesive tape is attached to a counterclockwise direction of the paper by a spring (not shown) so as to be swingable around the horizontal axis P5 of the support frame 25. It is supported by force.
[0042]
Also, a first cam surface 38 (corresponding to a first operating means) on which the right end of the holding arm 33 is guided from above, and a first cam plate 39 (swingable about the horizontal axis P7) (first A second cam surface 40 (corresponding to a second operating means), which is guided by the right end of the holding arm 34 in contact with the paper from below, and a second cam plate 41 (corresponding to a horizontal axis). Pivotable around P8) (corresponding to the second operation means) is provided.
[0043]
On the other hand, an L-shaped cutter arm 35 in side view is swingably supported around the horizontal axis P6 of the fixed portion, and a cutter 35a for cutting the adhesive tape is fixed to the tip of the cutter arm 35. Then, even if the cutter arm 35 swings rightward and leftward from the posture shown in FIGS. 9 and 14 (a), the coil-type spring 36 is returned to the posture shown in FIGS. 9 and 14 (a). Is provided as an urging means for urging the cutter 35a to return in the direction away from the adhesive tape 4, and no stopper or the like for determining the posture of the cutter arm 35 is provided. Since the spring 36 is attached in a state where the spring 36 is extended beyond its free length, the cutter arm 35 is stabilized in the state shown in FIGS. 9 and 14A in which the spring 36 contracts most.
[0044]
The state shown in FIG. 9 is a state where the support frame 25 located at the left end of the drawing is returned to the right side of the drawing after one package is completed, and the adhesive tape roll supported by the roll support base 4B is supported. In this state, the tip of the adhesive tape 4 pulled out from the 4R is adhesively held by the tape holding portion 37 whose position is fixed via the adhesive surface serving as the lower surface, and the cutter 35a is raised and is at the standby position. When the support frame 25 further moves rightward on the paper from the state shown in FIG. 9, as shown in FIG. 10, the operation of the first cam plate 39 causes the holding arm 33 to swing in the counterclockwise direction on the paper. The holding roller 33 a passes below the tape holding portion 37, and the holding member 32 fixed to the support frame 25 passes above the tape holding portion 37. Then, the holding arm 34 is pivoted clockwise by the action of the second cam surface 40, and the holding roller 34 a passes above the tape holding portion 37.
[0045]
Then, as shown in FIG. 10, the push operation portion 25a fixed to the support frame 25 comes into contact with the roller 35b (see FIG. 15) of the cutter arm 35, and the cutter arm 35 is also swung rightward on the paper. However, if the push operation portion 25a passes, the cutter arm 35 returns to the posture shown in FIG. Thereafter, as shown in FIG. 11, the right end of the holding arm 33 in the drawing is disengaged from the first cam plate 39, and the holding arm 33 swings clockwise in the drawing. Accordingly, the holding roller 33a of the holding arm 33 lifts the adhesive tape 4 from below, and the tip of the adhesive tape 4 is nipped between the holding member 32 and the holding roller 33a.
[0046]
The state shown in FIG. 11 corresponds to the state shown in FIG. 17. From the state shown in FIG. 17, the support frame 25 advances to the left in the drawing, and the state shown in FIG. As shown in ()), the cutting of the packaging sheet 1 by the cutting mechanism 26 is started.
[0047]
Next, as shown in FIG. 12, when the support frame 25 advances to the left on the paper surface, as shown in the above (3), the cutting mechanism 26 cuts the packaging sheet 1 and the holding member 32. And the holding roller 33a pulls the adhesive tape 4 to the left in the drawing. Then, when the adhesive tape 4 is pulled out to a certain length, the push operation portion 25a of the support frame 25 comes into contact with the roller 35b of the cutter arm 35, and pushes the cutter arm 35 leftward on the paper. Thus, the cutter arm 35 is pivoted downward against the urging force of the spring 36, and the adhesive tape 4 is cut by the cutter 35a at a position slightly separated from the tape holding portion 37 in the tape pull-out direction. An adhesive tape piece 4a having a predetermined length held by the holding member 32 and the holding roller 33a is obtained.
[0048]
As shown in FIG. 13, the support frame 25 further advances to the left in the drawing, and the adhesive tape piece 4 a held by the holding member 32 and the holding roller 33 a is transported toward the squeezing mechanism 12. When the adhesive tape piece 4a reaches the upper side of the squeezing mechanism 12, the right end of the press arm 34 in the drawing is disengaged from the second cam plate 41 and swings counterclockwise in the drawing, and the pressing roller 34a pushes the adhesive tape piece 4a. It is pressed against the edge portion 14a of the holding member 14 and the upper portion 1a of the cut packaging sheet 1. Then, the holding arm 33 is slightly swung counterclockwise by the action of the first cam surface 38, and the holding roller 33a is separated from the holding member 32 below. When the support frame 25 advances to the left in the drawing in the state shown in FIGS. 13, 16 (B), and 18 (B), the pressure-sensitive adhesive tape piece 4 a is pressed against the edge 14 a of the holding member 14 by the pressing roller 34 a. At the same time, the adhesive tape piece 4a separates from the holding roller 33a.
[0049]
Next, a description will be given of a structure of a cutting device for cutting the adhesive tape piece 4a of a predetermined length from the adhesive tape 4. As shown in FIGS. 14A and 15, the pressing member 43 is swingably supported around the horizontal axis P <b> 6 of the cutter arm 35, and the cutter arm 35 is inserted into the elongated hole 43 a formed in the pressing member 43. The pin 35c provided is engaged, and the swing range of the pressing member 43 is regulated by the long hole 43a. In addition, the torsion spring 44 urges the pressing member 43 to swing ahead of the cutter arm 35, and in the standby state shown in FIG. 14A, the front end of the pressing member 43 slightly projects from the cutter 35a. It is urged to swing.
[0050]
According to the above-described structure, as shown in FIGS. 12 and 14 (a), when the cutter arm 35 is operated to descend and swing by the pushing operation portion 25a of the support frame 25, the holding member 43 at the front limit position is also integrated. First, the leading end of the pressing member 43 protruding forward is pressed against the tape holding portion 37, and the adhesive tape 4 is pinched and fixed in cooperation with the tape holding portion 37. Then, as shown in FIG. 14 (b), when the cutter 35a is continuously lowered and oscillated, it is received by the tape holding portion 37, and the pressing member 43, which has been prevented from further descending, is connected to the elongated hole 43a. The cutter tape 35 is left at that position via the elastic accommodation constituted by the spring 44, and only the cutter arm 35 continues to descend and swing, and the adhesive tape 4 is cut by the cutter 35a at a position immediately before the holding portion 37 in the tape pull-out direction. Thus, an adhesive tape piece 4a having a desired length is obtained.
[0051]
(5)
Next, a step of pressing the adhered adhesive tape piece 4a from above will be described.
As shown in FIGS. 17 and 19, a pair of left and right first links 45 and a pair of second links 46 are supported on the support frame 25 behind the pressing roller 34a so as to be vertically swingable. A sponge member 47 is attached to the links 45 and 46, and the sponge member 47 is supported to be vertically movable in a parallel state. A cam arm 49 is fixed to one end of a support shaft 48 to which the second link 46 is fixed, and a spring 50 for urging the sponge member 47 upward is provided.
[0052]
With the above structure, as shown in FIG. 13, the adhesive tape 4 is pressed against the edge portion 14a of the sandwiching member 14 and the upper portion 1a of the cut packaging sheet 1, and from this state the support frame 25 is moved leftward on the paper. As shown in FIG. 20, the roller 49a of the cam arm 49 comes into contact with the fixing plate 51, and the sponge member 47 is moved downward, so that the sponge member 47 is moved to the end side 14a of the sandwiching member 14 and the cut package. It is pressed against the adhesive tape piece 4a on the upper part 1a of the sheet 1.
[0053]
After the pressing operation of the sponge member 47, the holding member 14 and the auxiliary holding member 16 are opened. In this case, as shown in FIG. 16B and FIG. 18B, the adhesive tape piece 4a is pressed against the edge 14a of the holding member 14, but is pressed against the edge 14a of the holding member 14 as described above. Since the non-adhesive member such as silicon rubber is adhered, when the pair of holding members 14 are separated from each other, the end side 14a of the holding member 14 is securely separated from the adhesive tape piece 4a without being attached. It is.
[0054]
Further, as described in the above (2), when the squeezing operation of the packaging sheet 1 is performed, the support base 3 is slightly raised to compress the spring 7, and the packaged object A is held by the holding member 14 and the auxiliary holding. It is pressed against the lower surface of the member 16. Therefore, when the holding member 14 and the auxiliary holding member 16 are opened as described above, the support 3 is immediately raised by the urging force of the spring 7, and the packaged object A and the packaging sheet 1 are sponge from below. It is pressed against the member 47. This prevents the packaging sheet 1 from opening when the holding member 14 and the auxiliary holding member 16 are opened.
[0055]
After the opening operation of the holding member 14 and the auxiliary holding member 16, the support base 3 is slightly lifted. Therefore, the adhesive tape piece 4a is firmly pressed against the packaging sheet 1 and the packaged object A by the lowering operation of the sponge member 47 and the raising operation of the support base 3. Then, the support frame 25 advances a little further to the left from the state shown in FIG. 20 and stops, and then immediately starts returning to the right on the paper. As a result, the adhesive tape piece 4a is pressed against the packaging sheet 1 and the packaged object A by the sponge member 47 before and after the support frame 25 reaches the end of the travel. When the packaging is completed in this way, the packaged object A is in a state as shown in FIG.
[0056]
As shown in each of the steps (3), (4), and (5) and in FIG. 17, the cutting mechanism 26, the holding arm 33 and the holding arm 34 for the adhesive tape 4, and the adhesive tape pressing are provided on one support frame 25. Sponge member 47 is supported. 1 and 17, the upper frame 1a of the packaging sheet 1 is cut, the adhesive tape 4 is pulled out, and the support frame 25 is advanced leftward from the state shown in FIG. The cutting, the sticking of the adhesive tape piece 4a to the packaged object A, and the pressing of the adhesive tape piece 4a against the packaged object A are continuously performed, and the above operations are performed until the support frame 25 reaches the left end of the paper. Is completed.
[0057]
Each of the above operations is performed by converting the advancing operation of the support frame 25 into power for each operation by a cam structure and using the power. When the above operation is completed, the support frame 25 is returned to the state shown in FIG. 10 from FIG. 11, and the holding operation of the adhesive tape 4 is performed.
[0058]
(6)
Next, a step of taking out the packaged object A from the support base 3 after the packaging is completed will be described.
As shown in FIGS. 21A and 22, the support portion 52 is supported on the support frame 6 via the spring 7, and the support portion 3 of the support base 3 is swingable around a horizontal axis P 9 of the support portion 52. The base 3a is connected, and a spring 53 for maintaining the support base 3 in the posture shown in FIG. 21A is bridged between the support 52 and the base 3a.
[0059]
Therefore, as shown in FIG. 22 and FIG. 21 (b), when the packaging of one packaged object A is completed, the support 3 is lowered. As a result, the pins 3b of the base 3a come into contact with the fixing portion 54, and the support 3 is operated to fall sideways around the horizontal axis P9. It is moved to the slide 55 and taken out. When this operation is completed, the support base 3 is raised to the original position shown in FIG.
[0060]
(7)
Next, a process of extracting the packaging sheet 1 onto the packaging table 2 will be described.
As shown in FIGS. 1 and 23 (a), the packaging sheet 1 is wound in a roll and supported by a pair of support rollers 56, and the leading end of the packaging sheet 1 is sandwiched between a pair of upper and lower feeding rollers 57. I have. The state shown in FIG. 23A is a state in which the drawer mechanism 58 located at the right end of the packaging table 2 has moved to the left end of the packaging table 2 when one package is completed.
[0061]
When the state shown in FIG. 23A is reached, the leading end of the packaging sheet 1 is fed out to the pull-out mechanism 58 side by the feeding roller 57, and the leading end of the packaging sheet 1 is operated by the pull-out mechanism 58 as shown in FIG. While being held by the arm 58a, the pull-out mechanism 58 moves to the right end of the packaging table 2 on the paper surface and pulls out the packaging sheet 1.
[0062]
As shown in FIG. 24A, a cutter 59 for cutting the packaging sheet 1 and a pair of pressing members 60 for pressing the front and rear portions of the cutter 59 in the packaging sheet 1 are disposed on the right side of the drawing roller 57 in the drawing. . When the packaging sheet 1 is pulled out as shown in FIG. 24A, the cutter 59 and the pressing member 60 descend as shown in FIG. 24B, and while the packaging sheet 1 is being pressed by the pair of pressing members 60, The portion between the pressing members 60 is cut by the cutter 59. As a result, the packaging sheet 1 cut to a predetermined length is placed on the packaging table 2, and one packaging operation is completed.
[0063]
In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.
[Brief description of the drawings]
FIG. 1 is an overall plan view of a packaging device.
FIG. 2 is a side view of the vicinity of a packaging table and a support table.
FIG. 3 is a side view showing a state in which the article to be packaged is supported by a support while being wrapped in a packaging sheet;
FIG. 4 is a plan view showing an open state and a closed state of the aperture mechanism.
FIG. 5 is a perspective view showing a drive structure of an aperture mechanism.
FIG. 6 is a plan view showing the vicinity of a pinion gear and a rack gear for driving the aperture mechanism.
FIG. 7 is a front view of the throttle mechanism in an open state.
FIG. 8 is a front view showing the state of the squeezing mechanism and the packaged object when the squeezing mechanism is closed.
FIG. 9 is a side view showing a support frame provided with a disk cutter and a holding arm for the adhesive tape, and the vicinity of the adhesive tape, showing a state where the support frame is about to return to the adhesive tape side after one package is completed. Figure
FIG. 10 is a side view showing a state before the support frame reaches a stroke end on the side of the adhesive tape;
FIG. 11 is a side view showing a state where the support frame has reached the stroke end on the adhesive tape side and the holding arm has clamped the tip of the adhesive tape.
12 is a side view showing a state in which the support frame advances from the state of FIG. 11 to the packaged object side, pulls out the adhesive tape, and cuts the adhesive tape with a cutter.
FIG. 13 is a side view showing a state in which the cut adhesive tape piece is transferred to an article to be packaged;
FIG. 14 is a side view showing a state before and after the adhesive tape cutting process in the adhesive tape supply mechanism.
FIG. 15 is a front view of the vicinity of a cutter arm in the adhesive tape supply mechanism.
FIG. 16 is a front view showing a state in which the disk cutter is cutting the upper part of the packaging sheet in a closed state of the squeezing mechanism, and a state in which the adhesive tape is transferred to the package after the cutting.
FIG. 17 is an overall plan view of a support frame provided with a disk cutter, a holding arm for an adhesive tape, and the like.
FIG. 18 is a plan view showing a state in which the disk cutter is cutting the upper part of the packaging sheet in a closed state of the squeezing mechanism, and a state in which the adhesive tape is transferred to the article to be packaged after the cutting;
FIG. 19 is a perspective view of the vicinity of a sponge member for pressing an adhesive tape.
FIG. 20 is a side view showing a state in which the adhesive tape piece is pressed by the sponge member.
FIG. 21 is a front view showing a state in which the packaged object is being transferred to a slide for collection;
FIG. 22 is a side view showing a state in which a packaged object is transferred to a collection slide.
FIG. 23 is a side view showing a state where the drawer mechanism has started to pull out the end of the roll-shaped packaging sheet.
FIG. 24 is a side view showing a state where the packaging sheet drawn out to a predetermined length is cut;
FIG. 25 is a perspective view showing the state of the packaged object after packaging is completed.
[Explanation of symbols]
1 Packaging sheet
4R adhesive tape roll
4 Adhesive tape
4a Adhesive tape piece
25a Push operation section
35a Cutter for adhesive tape
37 Tape holding unit
43 Holding member
A Packaged items

Claims (5)

A sealing adhesive tape supply mechanism for a packaging apparatus configured to squeeze a packaging sheet (1) wrapping an article to be packaged (A), and affix an adhesive tape piece (4a) to the squeezed portion to seal. ,
A pressure-sensitive adhesive tape roll (4R) held at a predetermined position, a tape holding portion (37) for holding a leading end of the pressure-sensitive adhesive tape (4) pulled out from the pressure-sensitive adhesive tape roll (4R) at a fixed position, and a pressure-sensitive adhesive tape ( 4) is released from the tape holding portion (37), and the tape pulling means is operated to pull out the tape holding portion (37) at a predetermined distance from the tape holding portion (37). The adhesive tape (4) is cut at a position closer to the tape pull-out side than a holding position of the pressing member (43) pressed against the tape holding portion (37) and the tape holding and fixing position of the tape holding portion (37) and the pressing member (43). Cutting a sealing adhesive tape for a packaging apparatus, comprising a cutter (35a) for forming an adhesive tape piece (4a) having a tip end side held by a tape pulling means. Location. The device for cutting a pressure-sensitive adhesive tape for sealing of a packaging device according to claim 1, wherein the tape pulling means is configured to convey the held pressure-sensitive adhesive tape piece (4a) to a sticking processing location. The cutter (35a) is configured to be movable between a cutting position and a standby position, and the holding member (43) is moved to the tape holding portion (37) in conjunction with the movement of the cutter (35a) to the tape cutting position. ), The cutter (35a) and the holding member (43) are linked so that
In the interlocking system between the cutter (35a) and the pressing member (43), as the cutter (35a) moves to the tape cutting position, the pressing member (43) moves the tape holding portion (37) before cutting the tape. an adhesive tape (4) sandwiched in cooperation with, and in a state where the pressing member (43) is sandwiching the adhesive tape (4) fixed by the tape holding portion (37) by cooperation, said cutter (35a ) Is urged to the side preceding the cutter (35a) such that the cutter (35a) moves forward to the tape cutting position, and the cutter (35a) moves beyond the clamping and fixing point to the tape cutting position. 3. A device for cutting a pressure-sensitive adhesive tape for sealing a packaging device according to claim 1, further comprising a spring (44) having a range of action of an urging force set to allow movement of the urging force . The cutter (35a) is configured to be urged and returned to the standby position, and the cutter (35a) is forcibly moved to the tape cutting position against the return urging force by the contact pressing operation of the push operation unit (25a). The device for cutting an adhesive tape for sealing of a packaging device according to any one of claims 1 to 3, wherein the device is configured to perform the cutting. The adhesive tape for sealing a packaging device according to any one of claims 1 to 4, wherein the tape holding portion (37) is configured to stick and hold the adhesive tape (4) via its adhesive surface. Cutting equipment.

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