JP2014083840A - Sealing material adhesion device for handhold hole of packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that conventional use of an aqueous adhesion in adhering a sealing material made of a high-elongation film to a handhold hole part of a packaging box tends to result in poor sealing material adhesion efficiency, high occurrence of defective products, a long waiting time required for drying the adhesive and the like.SOLUTION: A sealing material adhesion device is for adhering a sealing material T capable of closing a handhold hole C to the outer peripheral part of the handhold hole C, uses a high-elongation film having heat adhesiveness allowing heat adhesion to a box material B and adheres the sealing material T to the outer peripheral part of the handhold hole C at a sealing material adhesion position Q by means of heat adhesion with a heat sealing unit in order to solve problems of sealing material adhesion methods using an aqueous adhesive.

Description

  The present invention relates to a sealing material sticking device for a handle hole provided in a cardboard packaging box such as a cardboard box.

  In the case of a cardboard box such as a cardboard box, a pair of handle holes provided on opposite sides of the box is often used in consideration of convenience in carrying.

  By the way, most of the handle holes in this type of packaging box (made of cardboard) are generally left open. However, if the handle holes are left open, dust and insects can enter the box from the handle holes. Therefore, there is a deficiency as a packaging box for storing articles (such as foods and precision instruments) that are difficult to intrude (such as dust and insects).

  Therefore, conventionally, as shown in FIGS. 13 and 14, for example, as shown in FIGS. 13 and 14, each of the handle holes C, C from the inner surface side of the package box A is assumed to be closed without impairing the function of each handle hole of the packaging box. There is one in which a sealing material T is affixed to the outer peripheral edge. As shown in FIG. 14, this sealing material T is obtained by bonding (adhering) a high elongation film Ta to a kraft paper gum tape Tb. Further, a punching hole Tc having substantially the same shape as the handle hole C is formed in the gum tape Tb portion of the sealing material T. In the state where the sealing material T is stuck to the outer peripheral edge of the handle hole C, the handle hole C is closed by the film Ta, so that dust, insects, etc. enter the packaging box A from the handle hole C. Can be prevented.

  Then, in the packaging box A in which the sealing material T is affixed to each handle hole C shown in FIG. 13, the finger F is pulled out by inserting the finger F into the handle hole C from the outer surface side of the packaging box A as shown in FIG. The film Ta in the hole Tc portion can be bent inward (see reference numeral Ta ′), so that the finger F can be hung on the rim of the handle hole C while the handle hole C is closed with the film Ta. It has become. Since a high elongation film is used as the film Ta of the sealing material T, when the finger F is removed from the handle hole C, the film Ta contracts and returns to a flat state (shown by a solid line). Become.

  By the way, as shown in FIGS. 13 and 14, in order to apply the sealing material T to the outer peripheral edge portion of the handle hole C, conventionally, the film Ta portion of the sealing material T is adhered with an aqueous adhesive by manual bonding. is the current situation. That is, an aqueous adhesive is applied to the outer peripheral portion of the film Ta of the sealing material T, and the sealing material T with the adhesive is joined to the outer peripheral edge of the handle hole C from the inner surface side of the box material B, T is pasted. Note that the sticking operation of the sealing material T is performed in a state in which the box material is stretched before being assembled into the packaging box A.

  However, as described above, the conventional sealing material affixing method (manually adhering sealing material affixing method) to the box hole has the following problems.

  First, since the sealing material T is manually pasted, the worker is restrained by the sealing material pasting operation, and the pasting efficiency of the sealing material is poor. In addition, when the sticking efficiency of a sealing material is bad, the sealing material sticking cost per box will become high.

  Second, when the adhesive is applied to the outer peripheral portion of the film of the sealing material T, uneven application (shading) of the adhesive may occur. If the uneven application of the adhesive occurs, poor adhesion occurs. Sometimes. When the adhesion failure is severe, it may be a defective product.

  Thirdly, since the adhesive is water-based, when the sealing material T is joined to the box material, the adhesive may protrude from the edge of the sealing material and impair the appearance. In this case as well, when the sticking out of the adhesive is severe, it may be a defective product.

  Fourth, since the adhesive is water-based, a waiting time is required to dry the adhesive after sticking the sealing material. If a waiting time for drying the adhesive is required, the shipping time is delayed accordingly.

  Accordingly, the present invention provides a seal material sticking device for a handle hole of a packaging box which can efficiently and reliably stick a seal material for closing the handle hole in the box material to the outer peripheral edge of the handle hole. It is an object.

  The present invention has the following configuration as means for solving the above problems. In addition, although the name of this invention is "the sealing material sticking apparatus with respect to the handle hole of a packaging box", in the following description, the name of this invention may only be called "sealing material sticking apparatus."

[Invention of Claim 1 of the Present Application]
The invention of claim 1 of the present application is a sealing material affixing device for affixing a seal material capable of closing a handle hole in a box material that can be assembled into a packaging box with a handle hole, to the outer peripheral edge of the handle hole. As described above, a high-strength film with thermal adhesiveness that can be applied to the box material by heating is used, and the sealing material is bonded to the outer peripheral edge of the handle hole at the sealing material application position by a heat-sealing device. It is characterized in that it is affixed.

  The sealing material used in the sealing material pasting apparatus of claim 1 has an area slightly larger than the size of the handle hole of the box material to be pasted. The sealing material is preferably made of a double sheet in which a resin film having a property of being melted (adhered) by heating is bonded (adhered) to a gum tape such as kraft paper. In that case, what leaves a double sheet as it is can use what formed the punching hole of the same shape as the handle hole of a box material in the center part of a gum tape part. In the case where the double-sheet is thermally bonded to the outer peripheral edge of the handle hole and then the gum tape portion is peeled off from the high elongation film portion, the punch-out hole is not required in the gum tape portion.

  The heat sealing device has a hot plate heated by a heater wire, and can heat and melt the resin film portion of the sealing material by pressing against the sealing material. Moreover, the non-heating part is provided in the range corresponding to the handle hole of a box material in the center part of the lower surface in this heat seal apparatus (hot plate).

  And in this sealing material sticking device of this claim 1, in the state where the sealing material was put on the outer peripheral edge portion of the handle hole of the box material, the heat sealing device (hot plate) was pressed from above the sealing material. The outer periphery of the sealing material can be thermally bonded to the outer peripheral edge of the handle hole. In the case where the double sheet has no punched hole in the gum tape portion, the gum tape is peeled off after heat bonding (only the high elongation film remains).

  In this way, when the sealing material is applied, the handle hole of the box material is blocked by the high elongation film portion of the sealing material. Insects do not invade. In addition, since the handle hole closing portion in the seal material is a high elongation film, the film portion can be bent inward by inserting a finger there, so the handle hole is closed with the seal material. Even if it exists, this handle hole can be made to function as a handle.

[Invention of claim 2 of the present application]
The invention of claim 2 of the present application is the sealing material pasting device of claim 1, wherein the heat sealing device is provided with an adsorbing device capable of adsorbing the sealing material, while the heat sealing device is sealed with the sealing material waiting. It is characterized by including a moving device that moves between a material standby position and a sealing material application position by a heat seal device.

  As the adsorbing device according to the second aspect, a device capable of adsorbing the sealing material on the lower surface side of the heat sealing device (hot plate) by sucking air can be employed.

  In addition, the moving device according to claim 2 may be an appropriate driving means (for example, a lifting cylinder and a side) as long as it can move the heat seal device (hot plate) between the seal material standby position and the seal material application position. Can be used with a moving cylinder.

  In the sealing material pasting device according to claim 2, the heat sealing device is moved in a state where the sealing material waiting at the sealing material standby position is adsorbed on the lower surface of the heat sealing device (hot plate) by the adsorption device. Since the device can be moved to the sealing material application position, the sealing material can be moved automatically.

[Invention of claim 3 of the present application]
The invention according to claim 3 of the present application is the sealing material pasting apparatus according to claim 1 or 2, wherein the sealing material is one sheet in order by a cutter device at the leading end side of the belt-shaped sheet unwound from the raw roll wound in a roll shape. It is characterized by supplying the material cut by the length of the sealing material.

  As in the sealing material pasting apparatus according to claim 3, when a material in which the leading end side of the belt-like sheet unrolled from the raw roll is sequentially cut by the length of the sealing material per sheet is used as the sealing material, The seal material can be automatically supplied one by one as it progresses.

[Invention of claim 4 of the present application]
The invention of claim 4 of the present application is the sealing material pasting device according to any one of claims 1 to 3, wherein the box material is transported by the transport device, and the handle hole of the box material transported by the transport device is heated. It is characterized by having a stop device for stopping the conveyance of the box material at a position that reaches just below the position where the seal material is applied by the seal device.

  In the seal material affixing device according to the fourth aspect, the box material to which the seal material is affixed can be sequentially conveyed by the conveying device, and the box material can be stopped just below the seal material affixing position by the stop device.

[Effect of the invention of claim 1 of the present application]
The sealing material sticking device of claim 1 of the present application uses a high-strength film having thermal adhesiveness as the sealing material, and the sealing material is stuck to the outer peripheral edge of the handle hole by thermal bonding using a heat sealing device. Therefore, there are the following effects.

  (1) Since the sealing material can be mechanically attached to the outer peripheral edge of the box hole of the box material by a heat sealing device, a water-based adhesive is applied to the sealing material and pasted by hand. Compared with the method, the sticking operation of the sealing material is simplified and the sticking efficiency is improved (the sealing material sticking cost per box is reduced).

  (2) Since the sealing material can be affixed by heat bonding with a heat sealing device, the problem of adhesion failure due to uneven application (shading) of the adhesive, as in the conventional method of affixing the sealing material with an aqueous adhesive, and the adhesive However, it is possible to obviate the problem of bulging out from the edge of the sealing material and impairing its appearance (both of which cause defective products).

  (3) Since the sealing material is applied by heat sealing, there is no need for a waiting time for drying the adhesive after applying the sealing material, as in the case of applying the sealing material with a water-based adhesive (conventional application method). Shipment time can be shortened).

[Effect of the invention of claim 2 of the present application]
The invention of claim 2 of the present application is the sealing material affixing device of claim 1, wherein the heat sealing device is moved while the sealing material waiting at the sealing material standby position is adsorbed to the heat sealing device by the adsorption device. The device can be moved to the sealing material application position.

  Therefore, in the sealing material sticking device according to the second aspect, since the movement of the sealing material can be automatically performed, there is an effect that the sealing material sticking operation can be automated in addition to the effect of the first aspect.

[Effect of the invention of claim 3 of the present application]
The invention according to claim 3 of the present application is the sealing material pasting apparatus according to claim 1 or 2, wherein the sealing material is one sheet in order by a cutter device at the leading end side of the belt-shaped sheet unwound from the raw roll wound in a roll shape. The material cut by the length of the sealing material per hit is supplied.

  Therefore, in the sealing material pasting apparatus according to the third aspect, since the sealing material can be automatically supplied one by one sequentially in accordance with the progress of the sealing material pasting process, in addition to the effects of the first and second aspects, There is an effect that it can contribute to automation in terms of the aspect.

[Effect of the invention of claim 4 of the present application]
The invention of claim 4 of the present application is the sealing material affixing device according to any one of claims 1 to 3, wherein the box material to which the sealing material is to be adhered can be sequentially conveyed by the conveying device, and the box material is stopped. The device can be stopped just below the sealing material application position.

  Therefore, in the sealing material pasting apparatus according to the fourth aspect, the box material can be automatically supplied up to the normal sealing material pasting position, and therefore, in addition to the effects of the first to third aspects, it contributes to automation in terms of the box material feeding. There is an effect that can be.

It is the whole seal material sticking device side view of an example of this application. It is a top view of the sealing material sticking apparatus of FIG. FIG. 3 is an enlarged view taken along the line III-III in FIG. 1. FIG. 2 is a partially enlarged view of the sealing material pasting apparatus of FIG. 1. It is an expansion perspective view of the sealing material supply apparatus part in FIG. It is the expansion perspective view which looked at the heat seal apparatus part in FIG. 4 from the downward direction. FIG. 7 is a cross-sectional view corresponding to the VII-VII cross section of FIG. It is a state change figure from Drawing 7, and is an explanatory view at the time of sticking a sealing material. It is a box material top view in the state where a sealing material was stuck with a sealing material sticking device of this application. It is explanatory drawing (FIG. 5 equivalent drawing) of the formation method of the sealing material used in the other Example of this application. It is a top view of the state which stuck the sealing material of FIG. 10 on the handle hole part. It is a XII-XII section equivalent figure of Drawing 11, (A) shows the pasting state of a polymerization sealing material, and (B) is a figure showing the final state which peeled the gum tape part. It is a perspective view of the packaging box in the state which stuck the sealing material to the handle hole part. It is a XIV-XIV expanded sectional view of FIG.

[Example]
Hereinafter, with reference to FIG. 1 to FIG. 12 (both FIG. 13 and FIG. 14 are used), a sealing material sticking device for the handle hole of the packaging box of the present embodiment will be described. In the following description of the embodiments, the “sealing material sticking device for the handle hole of the packaging box” of the present application is simply referred to as “sealing material sticking device”.

  1 to 3 show a schematic configuration of a sealing material sticking device of this embodiment, the sealing material sticking device of this embodiment includes the following devices as a basic configuration.

  That is, the sealing material pasting device of this embodiment includes a series of transport devices 1 that sequentially transport the box material B to which the sealing material T is to be pasted to a predetermined position, and the sealing materials T one by one at the sealing material standby position P. The seal material supply device 2 to be supplied, the heat seal device 3 for thermally bonding the seal material T to the outer peripheral edge of the handle hole C of the box material B, and the adsorption for adsorbing the seal material T to the lower surface portion of the heat seal device 3 The apparatus 4, the moving device 5 that moves the heat seal device 3 between the seal material standby position P and the seal material application position Q, and the box material B that is transported by the transport device 1 is attached to the seal material by the heat seal device 3. A stop device 6 that stops at the position Q, a positioning device 7 that positions the box material B supplied to the sealing material standby position P at a predetermined position in the width direction on the transport device 1, and a handle hole C portion of the box material B Affixed Inspection device 8 for inspecting the attached state of the sealing material T, has a basic structure and.

  In the following description, the conveyance direction (left side in FIGS. 1 and 2) of the box material by the conveyance device 1 is sometimes referred to as the downstream side or the front side, and the direction opposite to the conveyance direction of the box material by the conveyance device 1 ( The right side in FIGS. 1 and 2 may be referred to as an upstream side or a rear side.

  The box material B to which the sealing material T is to be attached is made of cardboard having shape-retaining properties such as corrugated cardboard, and is handled in a stretched state until the sealing material T is applied to the handle hole C portion. . Then, the box material B is assembled into a rectangular packaging box A as shown in FIG. 13 after sticking the sealing materials T and T to the respective handle holes C1 and C2 as described later (state of FIG. 9). To get. In each figure, the box material is denoted by reference sign B, but is properly used as B0 to B3 depending on the movement position on the transport device 1. Further, the box material B is formed with handle holes C and C at positions that are opposite sides when assembled in the packaging box (FIG. 13). The leading side (or the front side) in the above is denoted by C1, while the trailing side (or the rear side) is denoted by C2. The size of the handle hole C is not particularly limited. For example, a hole having a major axis dimension of about 80 mm and a minor axis dimension of about 34 mm is often used.

  In this embodiment, the conveying device 1 is configured such that a feeding unit conveyor 11, a pasting unit conveyor 12, and an inspection unit conveyor 13 each including a conveyor belt are sequentially arranged in one row. The feeding section conveyor 11, the pasting section conveyor 12, and the inspection section conveyor 13 are individually driven by individual motors 11a, 12a, and 13a.

  The charging unit conveyor 11 serves as a starting end conveyor for charging the box material B0 to which the sealing material is to be attached. The box material B0 can be temporarily kept on the charging unit conveyor 11.

  The affixing part conveyor 12 serves as a place for transferring the box material B0 from the top of the input part conveyor 11 and affixing the sealing material T to the handle holes C1 and C2 of the box material. And on this sticking section conveyor 12, the front and rear handle holes C1, C2 of the box material can be sequentially stopped at a sealing material sticking position Q (FIGS. 2 and 4) described later.

  The inspection unit conveyor 13 transfers the box material (symbol B2) with the sealing material affixed on the affixing portion conveyor 12 from the affixing portion conveyor 12, and inspects the affixing state of the sealing material on the sealing material affixed box material It will be a place to do.

  And this series of conveyance apparatus 1 (The input part conveyor 11, the sticking part conveyor 12, and the test | inspection part conveyor 13) throws the box material B0 on the input part conveyor 11, and starts the control part which is not shown in figure. By pressing the switch, the motors 11a, 12a, 13a of the conveyors 11, 12, 13 are sequentially driven based on a predetermined program, and cooperate with the other devices so that the conveyors 11, 12, Each process is carried out on 13.

  The pasting part conveyor 12 is provided with a stopping device 6 for stopping the box material B1 transported on the pasting part conveyor 12 at a fixed position in the transport direction (sealing material pasting position Q).

  As shown in FIGS. 2 and 4, the stopping device 6 has the box material B attached to the sticking section conveyor 12 in relation to the presence of the respective handle holes C <b> 1 and C <b> 2 to which the seal material T is to be attached at two locations of the box material B. Two stoppers, a first stopper 61 and a second stopper 62, are used in order to stop at the two front and rear positions. The stoppers 61 and 62 are configured such that the stop plates 61b and 62b are moved up and down by elevating cylinders 61a and 62a, respectively. Note that only one set of the first stopper 61 on the front side is used at the center in the conveyor width direction, but two sets of the second stopper 62 on the back side are used at intervals in the conveyor width direction.

  The first stop position D (see FIGS. 2 and 4) by the first stopper 61 is a position where the front handle hole C1 of the box material B1 stopped there corresponds to a seal material application position Q by the heat seal device 3 described later. It will be. Further, the second stop position E (see FIGS. 2 and 4) by the second stoppers 62 and 62 is the sealing material application position Q by the heat seal device 3 described later in which the rear handle hole C2 of the box material B2 stopped there is stopped. It becomes a position corresponding to.

  Then, the box material B0 on the loading section conveyor 11 side is transferred to the sticking section conveyor 12 side, and the box material tip is moved by a phototube (not shown) immediately before the box material tip reaches the first stop position D. Then, the first stopper 61 is stopped by the detection signal from the phototube. The stop operation of the first stopper 61 is such that the lifting cylinder 61a extends to move the stop plate 61b downward, so that the tip of the box material B1 conveyed on the sticking section conveyor 12 is positioned at the position of the stop plate 61b (first 1 Stop at stop position D). Note that when the box material B1 is stopped by the first stopper 61, the operation of the sticking section conveyor 12 is stopped.

  In addition, a photoelectric tube (not shown) for detecting the tip of the box material is also provided immediately before the second stopper 62. Then, as will be described later, after sticking the sealing material T to the front handle hole C1 at the first stop position D, the stopper plate 61b of the first stopper 61 is moved upward and the sticking section conveyor 12 is operated (running). Then, the box material is later fed from the first stop position D, and then the box material tip is detected by the photoelectric tube for the second stopper 62, so that the second stopper 62 is stopped by the detection signal. ing. The stop operation of the second stopper 62 is performed by extending the lifting cylinder 62a and moving the stop plate 62b downward, so that the front end portion of the box material B1 conveyed through the sticking portion conveyor 12 is positioned at the stop plate 62b (first step). 2 It can be stopped at the stop position E). In this case as well, the operation of the sticking section conveyor 12 is stopped when the box material B2 is stopped by the second stopper 62.

  In a state where the box material B2 is stopped by the second stopper 62, the rear handle hole C2 of the box material B2 is at a position corresponding to the seal material application position Q by the heat seal device 3, and the rear side as will be described later. The sealing material T can be attached to the handle hole C2 by the heat sealing device 3.

  And after sticking the sealing material T to the both-handed holes C1, C2 of the box material B2, respectively, the second stopper 62 is released from the stop, and then the pasting part conveyor 12 and the subsequent inspection part conveyor 13 are operated, The box material B3 to which the sealing material has been applied can be transferred to the inspection unit conveyor 13 side.

  Further, as shown in FIGS. 2 and 3, a positioning device 7 for positioning the box material B1 conveyed on the pasting portion conveyor 12 at a specific position in the width direction of the conveyor is provided in the pasting portion conveyor 12 portion. It has been. The positioning device 7 is configured so that the other side (upper side in FIG. 2, upper side of FIG. 2) of the pasting part conveyor 12 with respect to the receiving plate 73 provided on the side edge of one side (lower side in FIG. 2, left side in FIG. 3). 3, the box material B1 can be positioned at a fixed position in the width direction of the affixing part conveyor 12 on the affixing part conveyor 12 by extruding the pressing plate 72 from the side edge side of the affixing part conveyor 12. is there. That is, in FIG. 2, immediately after the box material B1 is stopped at the first stop position D on the sticking portion conveyor 12, the cylinders 71 and 71 of the positioning device 7 are extended, whereby the push plate 72 is shown in a chain line ( The side edge of the box material B1 can be joined over the entire length of the receiving plate 73 by being pushed out to the center side of the conveyor as indicated by reference numeral 72 ').

  Thus, in the state where the side edge of the box material B1 is joined to the receiving plate 73, the front and rear handle holes C1 and C2 of the box material B1 are applied to the seal material application position Q by the heat seal device 3 described later. It comes to be located in the same position of the conveyance direction of the conveyor 12, and the sealing material T can be affixed now in the exact position of the conveyor width direction with respect to each front and rear handle holes C1, C2.

  In this embodiment, the sealing material T to be attached to the handle hole C portion of the box material is, as shown in FIGS. 1 and 4, the leading end side of the belt-like sheet S unrolled from the raw roll R wound in a roll shape. Are sequentially cut by the length of the sealing material per one sheet (dimension M in FIG. 5).

  In this embodiment, the sealing material T to be affixed to the handle hole C is sequentially manufactured by a sealing material supply device 2 described later. The basic configuration of the sealing material T will be described first.

  As the sealing material T used in this embodiment, as shown by a cut piece (reference numeral T) at the right end in FIGS. 5 and 10, a resin film Ta having a heat melting property is joined to a gum tape Tb made of kraft paper. (Adhered) double sheet. The size of each sealing material T is considerably larger than the handle holes C (C1, C2) of the box material B (for example, the length M is about 140 mm and the width is about 110 mm).

  As the resin film Ta in the sealing material T, any material can be adopted as long as it can be thermally bonded by heating. For example, a urethane film can be used. In addition, the heat bonding temperature of the resin film Ta should just be what can be heat-bonded at the temperature of about 150 to 200 degreeC, for example. The thickness of the resin film Ta is not particularly limited, but for example, a thickness of about 50 to 70 microns can be adopted.

  The gum tape Tb portion in the sealing material T is for preventing the resin film Ta portion from being welded to the heat sealing device 3 (hot plate) during thermal bonding of the sealing material. As shown in FIG. 5, this gum tape Tb has a punch hole Tc formed in advance in the center portion with a size approximately equal to or slightly larger than the handle hole C of the box material B, or in FIG. As shown in the figure, a flat shape having no punched holes on the entire surface can be employed.

  Then, in the case of using the sealing material T shown in FIG. 5 (having the punched hole Tc in the central portion), the punched hole of the sealing material T from the outside of the packaging box A as shown in FIGS. By inserting the finger F into the Tc portion, the resin film Ta portion can be bent inward, so that the finger F can be hung on the edge of the handle hole while the handle hole C is closed with the resin film Ta. In addition, in the thing which leaves the gum tape Tb part as it is after sticking the sealing material T, the gum tape Tb functions as a reinforcing material.

  On the other hand, when the sealing material T shown in FIG. 10 (planar shape without a punch hole) is used, as will be described later (described later with reference to FIG. 12), the sealing material T is highly stretched. After the thermal film Ta portion is thermally bonded to the outer peripheral edge portion of the handle hole C, the gum tape Tb covering the outer side is peeled off, so that only the high elongation film Ta is obtained as shown in FIG. Try to leave. Also in this case, the finger F can be hung on the edge of the hole of the handle hole while the handle hole C is closed with the resin film Ta.

  The sealing material T having the punched hole Tc in the central portion is manufactured as follows from the belt-like sheet S wound around the raw roll R by the sealing material supply device 2 shown in FIG.

  When manufacturing the sealing material T with the punching hole Tc shown in FIG. 5, as the belt-like sheet S wound around the raw fabric roll R, a belt-like resin film Sa having heat adhesive property is applied to the belt-like gum tape Sb made of kraft paper. A double sheet bonded (adhered) is used. In this case, in the vicinity of the center of the width of the belt-like gum tape Sb, a large number of punched holes Sc, Sc are formed with a predetermined length interval L (the same interval as the sealing material length M).

  And the sealing material supply apparatus 2 employ | adopted in this Example transfers the strip | belt-shaped sheet | seat S which was unwound from the original fabric roll R one by one pitch L (refer FIG. 5) sequentially, as shown in FIG.1 and FIG.4. And a cutter device 25 that cuts the leading end side of the belt-like sheet S by a sealing material length M.

  As shown in FIGS. 4 and 5, the feed conveyor 21 can intermittently travel the belt 21 a to the upstream side (right side in FIGS. 4 and 5) of the belt 21 a by 1 pitch L by a motor (servo motor) 22. Is.

  A presser device 23 that presses the belt-like sheet S placed on the belt 21a of the feed conveyor 21 is provided above the starting end of the feed conveyor 21 (immediately above the drive roller 21b shown in FIG. 5). This presser device 23 employs a lifting cylinder 23a that moves the roller 23b up and down, and is used with the roller 23b moved downward during operation. In the state where the roller 23b is moved downward, the belt-like sheet S is sandwiched between the roller 23b and the belt 21a (drive roller 21b), and the belt-like sheet S is operated by operating the feed conveyor 21 in this sandwiched state. The sheet S can be accurately transferred to the downstream side (right side in FIGS. 4 and 5) of the belt 21a by one pitch L.

  The cutter device 25 is provided in the vicinity of a substantially intermediate length position of the belt 21 a on the feed conveyor 21. The cutter device 25 is of a guillotine type, and in the illustrated example, a cutter device that can move the blade 25b up and down with an elevating cylinder 25a is employed. In addition, as this cutter apparatus 25, if it can cut | disconnect the front end side of the strip | belt-shaped sheet | seat S sequentially, the thing of a suitable cutting type is employable.

  Between the press device 23 and the cutter device 25 on the feed conveyor 21, the leading end side of the belt-like sheet S is cut by the cutter device 25 at an accurate position (a center position between two adjacent punching holes Sc and Sc). Therefore, position detectors 24 and 24 for detecting whether or not the punching hole Sc of the belt-like sheet S is stopped at the normal position are provided.

  The position detectors 24 are configured in pairs, and the distance between the position detectors 24 and 24 is set to be slightly wider than the length of the punch hole Sc. Then, the position of both ends of the punch hole Sc is monitored by these two position detectors 24, 24 (identified by the change in the color of the film Sa and the gum tape Sb), whereby the cutting position N (see FIG. 5) is an accurate intermediate position between two adjacent punched holes Sc, Sc.

  Further, when the position detectors 24, 24 detect the inside of the punch hole Sc (film Sa surface) in either one of the two, an error signal is generated by detecting a different color, and the error signal Thus, the operation of the feed conveyor 21 (motor 22) is prohibited. That is, when an error signal is issued from the position detectors 24, 24, the position of the drawing hole Sc of the belt-like sheet S is shifted from the normal position in the belt-sheet length direction, The tip end side of S cannot be cut at the normal position by the cutter device 25 (the withdrawal hole Tc of the sealing material T is displaced in the sealing material length direction). Therefore, when the position detectors 24, 24 detect the positional deviation of the punch hole Sc, the feeding operation of the belt-like sheet S is prohibited.

  Then, when an error signal is generated from the position detector 24 and the feed conveyor 21 cannot be operated, the roller 23b of the presser device 23 is moved up as shown by a chain line (reference numeral 23b ') in FIG. Then, the operation is resumed by finely adjusting the position of the belt-like sheet S in the length direction (position adjustment so that the position detectors 24 and 24 detect the positions of both end edges of the punch hole Sc). it can. The roller 23b may be moved upward when the belt-like sheet S unwound from the raw roll R is passed between the belt 21a of the feed conveyor 21 and the roller 23b of the presser device 23.

  The sealing material supply device 2 of this embodiment functions as follows. That is, with the belt-like sheet S being sandwiched between the roller 23b of the presser device 23 and the belt 21a of the feed conveyor 21 as described above, the belt-like sheet S is accurately placed every time the motor 22 is operated once. It can be sent to the downstream side (the right side in FIGS. 4 and 5) by one pitch L which is the same as the length M. On the other hand, the cutter device 25 is cut once every time the feed conveyor 21 is operated once, and sequentially cuts the front end side of the belt-like sheet S by the sealing material length M at the cutting position N in FIG. It is like that. And the cut | disconnected sealing material is moved to the terminal part of the belt 21a by the next action | operation of the feed conveyor 21 (position of the sealing material T of the right end in FIG. 5). The position of the sealing material T on the terminal portion of the belt 21a in FIG. 5 is the sealing material standby position P in FIG.

  A heat seal device 3 for thermally bonding the sealing material T to the outer peripheral edge of the handle hole C is disposed above the terminal end of the feed conveyor 21.

  The heat seal device 3 uses a hot plate 31 in which a heater wire 32 is embedded, as shown in enlarged views in FIGS. The outer shape of the lower surface 31a of the hot plate 31 is substantially the same as or slightly larger than the outer shape of the sealing material T used. The hot plate 31 is integrally assembled to the lower surface side of the mounting plate 35 via a heat insulating plate 36.

  In addition, a thermometer (thermocouple) 33 is provided in the hot plate 31 to control energization to the heater wire 32 based on the temperature detected by the thermometer 33 (the hot plate 31 is replaced with the resin film Ta. The temperature is allowed to be meltable).

  The heat sealing device 3 can be moved between the sealing material standby position P and the sealing material application position Q shown in FIGS. 2 and 4 by a moving device 5 (the elevating cylinder 51 and the lateral movement cylinder 52) described later. However, the sealing material standby position P and the sealing material application position Q will be described first.

  The sealing material standby position P (FIGS. 2 and 4) is a position of the upper surface of the end portion of the belt 21a of the feed conveyor 21, and is a position where the sealing material T cut by the cutter device 25 is sequentially supplied.

  The sealing material sticking position Q (FIGS. 2 and 4) is in the vicinity of the terminal end portion (right end portion) of the sticking portion conveyor 21 and is in the first stop position D where the first stopper 61 stops the box material B1. This is a position corresponding to the front handle hole C1.

  The heat sealing device 3 is provided with an adsorbing device 4 for adsorbing the sealing material T on the lower surface of the hot plate 31. The suction device 4 is installed so as to be movable up and down in a blower 41 shown in FIGS. 1 and 4 and a space 34 provided in a central portion on the lower surface side of the hot plate 31 as shown in enlarged views in FIGS. A suction table 42.

  As shown in FIG. 6, the suction table 42 is an oval block body whose lower surface is substantially the same shape and size as the punching hole Tc of the sealing material T, and is slightly forward and backward (left and right in FIGS. 7 to 8). Two intake holes 43, 43 are formed at two positions with a gap. Further, as shown in FIG. 7 and FIG. 8, the suction stand 42 has the support bolts in a state where the springs 45 and 45 are urged downward at the two positions near the front and rear (left and right in FIGS. 7 to 8). 46 and 46 are supporting. In the natural state of the suction table 42, as shown in FIG. 7, the suction table 42 is urged downward by the springs 45, 45, and the lower surface of the suction table 42 is slightly smaller than the lower surface 31a of the hot plate 31. While it protrudes downward by the height, as shown in FIG. 8, when the heat plate lower surface 31a is pressed onto the box material B1, the suction table 42 is immersed in the space 34 against the urging force of the springs 45, 45. It is supposed to be.

  The suction holes 43 and 43 of the suction stand 42 are connected to the blower 41 via the suction hoses 44 and 44, respectively, and can suck air from the suction holes 43 and 43 by switching a solenoid valve (not shown). Yes. Then, the sealing material T can be adsorbed to the lower surface of the adsorption table 42 by being sucked from the intake holes 43 and 43 at the timing described later.

  As shown in FIG. 4, the heat sealing device 3 (hot plate 31) is moved up and down by a lifting cylinder 51 of the moving device 5, and moved back and forth by the lifting cylinder 51 of the moving device 5. Is done.

  That is, the heat seal device 3 (hot plate 31) is fixed to the lower part of the lifting cylinder 51, and on the other hand, the lifting cylinder 51 is expanded and contracted in two steps (upper and lower positions 31 and 31 in FIG. 4). ′ And the lower position of reference numeral 31 ″. On the other hand, the heat sealing device 3 is moved to the front and rear two positions (reference numeral 3 in FIG. The operation by the moving device 5 (the lifting cylinder 51 and the laterally moving cylinder 52) is the same as that of the sealing material pasting device of this embodiment. It will be described later in relation to the method of use and the sequence of operation.

  The inspection device 8 installed on the inspection unit conveyor 13 inspects whether or not the seal materials T attached to the respective handle holes C1 and C2 of the box material B are attached in a normal state. And this inspection apparatus 8 has a sealing material pasted part (C1, C2 part) with the camera (not shown) provided in the lower surface of the inspection apparatus 8 in the middle of passing the sealing material pasted box material B3 on the inspection part conveyor 13. ) And displaying an image, it is possible to determine whether or not the sealing material application state is good.

  The sealing material sticking device of this embodiment is used as follows. Prior to operation, the heater wire 32 of the heat sealing device 3 is energized to heat the hot plate 31 to a temperature at which the resin film Ta as the sealing material can be melted. Further, the sealing material supply device 2 supplies a sealing material T formed by cutting the leading end side of the belt-like sheet S unwound from the raw roll R to the upper surface (sealing material standby position P) of the terminal end portion of the feed conveyor 21. At the same time, the hot plate 31 of the heat sealing device 3 is made to stand by just above the sealing material standby position P indicated by a solid line in FIG.

  In the ready state, as shown in FIG. 2, after the box material B0 on which the sealing material is to be pasted is placed on the feeding section conveyor 11, when the start switch is pressed, the feeding section conveyor 11 and the pasting section conveyor 12 run. Then, the box material B0 on the feeding unit conveyor 11 is transferred onto the pasting unit conveyor 12. And if the front-end | tip part of the box material transferred on the sticking part conveyor 12 is detected with the photoelectric tube for 1st stoppers 61, the 1st stopper 61 will carry out stop operation | movement (stop plate 61b will move down) by the detection signal.

  And when the front-end | tip part of the box material B1 transferred on the sticking part conveyor 12 collides with the 1st stopper 61, while stopping the driving | running | working of the sticking part conveyor 12, each cylinder 71 and 71 of the positioning device 7 is carried out. The box material B1 is positioned at a predetermined position in the conveyor width direction by extending and pushing the push plate 72 forward as indicated by reference numeral 72 '(FIG. 2). In this state, the front side handle hole C1 of the box material B1 is accurately positioned at the sealing material application position Q. In addition, after aligning the box material B1 at an accurate position in the conveyor width direction, the cylinders 71 and 71 of the positioning device 7 may be reduced and the pressing plate 72 may be retracted to the original standby position. The backward movement timing of the plate 72 may be immediately after the sticking operation of the sealing material T to the front handle hole C1.

  Next, as shown in FIG. 4, from the state where the heat sealing device 3 is waiting just above the sealing material standby position P, the elevating cylinder 51 is extended by the first stage, so that the hot plate 31 is 7 is moved downward as indicated by reference numeral 31 ′ in FIG. 7, and the lower surface of the suction stand 42 ′ (FIG. 7) is joined (or close) to the sealing material T on the terminal end portion (sealing material standby position P) of the feed conveyor 21. At the same time, the blower 41 of the suction device 4 sucks air through the suction hoses 44 and 44 from the suction holes 43 ′ and 43 ′ of the suction table 42 ′, thereby adsorbing the sealing material T on the lower surface of the suction table 42 ′. At this time, since the lower surface of the hot plate 31 'is separated from the sealing material T by a considerable distance, the resin film Ta portion of the sealing material T is not yet heated.

  Thereafter, when the elevating cylinder 51 is reduced, the hot plate 31 returns to the original standby height as shown by a solid line in FIG. 7, but at that time, the sealing material is adsorbed as shown by a chain line (reference numeral T ′) in FIG. It remains adsorbed on the lower surface of the table 42.

  Next, in FIG. 4, the lateral movement cylinder 52 extends to seal the heat sealing device 3 that was on the sealing material standby position P together with the lifting cylinder 51 so as to indicate a chain line (reference numeral 3 ′ and reference numeral 51 ′). It is moved just above the material sticking position Q. At this time, the heat sealing apparatus has moved to a position beyond the right end of the front end portion of the feed conveyor 21, as indicated by reference numeral 3 'in FIG.

  Next, when the elevating cylinder 51 'is extended to the maximum when the heat sealing device is at the position 3' in FIG. 4 (the sealing material T 'is still adsorbed on the lower surface of the adsorption table), After the adsorbing sealing material T is joined onto the outer peripheral edge of the front side handle hole C1 of the box material B1 stopped at the first stop position D, the heat plate 31 further moves down, so that the adsorption table 42 is moved. The heat plate 31 moves up relatively in the void 34 of the heat plate 31 (the heat plate 31 moves down with respect to the suction table 42 that cannot actually move down), and finally the lower surface 31a of the heat plate 31 is the sealing material. Strongly press the outer peripheral edge of T (gum tape Tb portion). At this time, as shown in FIG. 8, the lower surface 31a of the hot plate 31 heats the outer peripheral edge portion (the outer peripheral portion of the resin film Ta) of the sealing material T through the gummed tape Tb portion, thereby pulling out the resin film Ta. Only the outside of the hole Tc can be thermally melted. Accordingly, the rubber film Tb of the sealing material T is firmly heat-bonded to the portion surrounding the handing hole C1 of the box B1 while maintaining the high stretchability of the resin film Ta of the covering part of the handing hole C1. Can do.

  As shown in FIG. 8 (and reference numeral 31 ″ in FIG. 4), when the sealing material application process to the front side handle hole C1 in the box material B1 is completed, the heat sealing device 3 is returned to the original standby position. After the elevating cylinder 51 'in FIG. 4 is reduced and the heat seal device is moved upward as indicated by reference numeral 3', the lateral movement cylinder 52 is reduced to bring the heat seal device 3 back to the original standby position (solid line in FIG. 4). It can be returned to the position shown in the figure.

  In addition, the stop function of the first stopper 61 is released in parallel with the operation of returning the heat seal device 3 to the original standby position (the elevating cylinder 61a is reduced to move the stop plate 61b upward), and the affixing portion By running the conveyor 12, the box material B <b> 1 that was at the first stop position D on the pasting part conveyor 12 is sent back. Subsequently, when the phototube for the second stopper 62 detects the leading end of the box material, the second stopper 62 is stopped by the detection signal, and the second stopper 62 moves the box material to the second stop position E (position B2). ) To stop.

  On the other hand, after the sealing material T that was on the terminal end portion (sealing material standby position P) of the feed conveyor 21 is adsorbed on the lower surface of the suction table 42 of the heat seal device 3 and removed from the sealing material standby position P, The sealing material supply device 2 performs a series of operations. That is, after the sealing material T on the terminal end portion of the feed conveyor 21 is removed, the cutting operation is performed by the cutter device 25 shown in FIGS. 4 and 5, and the leading end side of the belt-like sheet S is cut at the cutting position indicated by the symbol N. (The sealing material T having a length per sheet is cut off), and then the motor 22 of the feed conveyor 21 with the belt-like sheet S sandwiched between the belt 21a of the feed conveyor 21 and the roller 23b of the pressing device 23. Is activated to feed the belt-like sheet S by a length corresponding to one pitch L. At this time, the sealing material T previously cut by the cutter device 25 reaches the sealing material standby position P at the end portion of the feed conveyor 21.

  And in the state which the box material has stopped in the 2nd stop position E shown to B2 of FIG. 4, the said moving apparatus 5 (the raising / lowering cylinder 51 and the horizontal movement cylinder 52) and the adsorption | suction apparatus 4 (the blower 41, the adsorption stand 42). Operates in the same manner as described above to move the sealing material T at the sealing material standby position P to the sealing material application position Q, and the rear handle hole of the box material B2 waiting at the sealing material application position Q The sealing material T is affixed to the rear handle hole C2 by thermally bonding the sealing material T to the outer peripheral edge of C2 with the hot plate 31 ″ (or the hot plate 31 in FIG. 8).

  Thereafter, the stop function of the second stopper 62 is released (the elevating cylinder 62a is reduced to move the stop plate 62b upward), and the pasting part conveyor 12 and the inspection part conveyor 13 are caused to travel, as shown in FIG. The box material B2 that was at the second stop position E on the affixing part conveyor 12 can be transferred onto the inspection part conveyor 13.

  As shown in FIG. 2, the box material B3 transferred onto the inspection unit conveyor 13 passes through the lower surface of the inspection device 8 so that the seal materials T and T attached to the front and rear handle holes C1 and C2 The pasting state is photographed with the camera of the inspection device 8 to inspect the quality of the sealing material pasting state (the one that passed the inspection is handled as a non-defective product).

  By the way, as shown in FIG. 10, the sealing material T without the punched hole in the gum tape Tb portion is also formed by sequentially cutting the front side of the belt-like sheet S by the sealing device length M by the cutter device 25. And in this sealing material T without a punching hole, after covering the outer peripheral part of the handle hole C of the box material B, as shown in FIG. In this case, since there is no punch hole in the gum tape Tb portion, after sticking the sealing material T, the gum tape Tb 'is peeled off as shown by a chain line (reference symbol Tb') in FIG. Then, as shown in FIG. 12 (B), since only the high elongation film Ta remains in the handle hole C portion, when the finger F is inserted into the handle hole C portion, the high elongation film existing there is encoded. It can be bent as indicated by Ta ′.

  In this embodiment, the sealing material pasting apparatus is configured such that after the box material B0 to which the sealing material T is to be pasted is placed on the feeding section conveyor 11, the start switch of the control section is pressed to seal the sealing materials for the respective handle holes C0 and C2. The sticking operation of T is automatically performed sequentially. In this embodiment, the box materials B0 to which the sealing material T is to be attached are sequentially put on the feeding section conveyor 11 one by one, but in other embodiments, the box section conveyor 11 of the feeding section conveyor 11 is used. It is possible to wait in a state where a large number of box materials B0 are stacked in the vicinity, and mechanically feed the box materials B0 one by one on the feeding section conveyor 11 one by one with an appropriate feeding device. .

  Box material B (the one shown in FIG. 9) with sealing materials T and T attached to the respective handle holes C1 and C2 is assembled and used in a packaging box A as shown in FIG. 13, but the handle holes C are sealed. Since it is blocked by the resin film Ta of the material T, foreign matter (dust and insects) can be prevented from entering the box from the handle hole C, while the resin film Ta portion is a high elongation film. As shown in FIG. 14, the function of the handle hole C is not impaired.

  The sealing material affixing device of this embodiment can achieve various effects described in the above section [Effects of the invention]. The effects are summarized as follows.

  First, since the sealing material sticking device of this embodiment is such that the sealing material T is stuck to the outer peripheral edge portions of the handle holes C1 and C2 by heat bonding using the heat sealing device 3, the sealing material is conventionally used. Compared with the method in which a water-based adhesive is applied to the tape and manually pasted, the sealing material sticking operation is simple and the sticking efficiency is good (the sealing material sticking cost per box is low). In addition, problems such as poor adhesion due to uneven application (shading) of the adhesive and problems that the adhesive protrudes from the edge of the sealing material and impairs the appearance (both of which cause defective products) can be solved. Furthermore, there is no need for a waiting time for drying the adhesive after sticking the sealing material (the shipping time can be shortened).

  Further, in a state where the sealing material T waiting at the sealing material standby position P is adsorbed to the heat sealing device 3 by the adsorption device 4, the heat sealing device 3 is moved to the moving device 5 (elevating cylinder 51 and lateral moving cylinder 52). Since it can be moved to the sealing material application position Q, it can contribute to the automation of the sealing material application work.

  Further, the sealing material T is supplied by cutting the leading end side of the strip-shaped sheet S unrolled from the raw roll R by the cutter device 25 one by one by the length of the sealing material. Along with the progress of the sticking process, the sealing materials can be automatically supplied one by one in sequence, thereby contributing to automation in terms of supplying the sealing material.

  Further, the box material to which the sealing material T is to be attached can be sequentially conveyed by the conveying device 1, and the box material is stopped immediately below the sealing material application position Q by the stopping device 6 (first stopper 61 and second stopper 62). Therefore, the box material can be automatically supplied up to the regular sealing material application position Q, thereby contributing to automation in terms of the box material supply.

  1 is a conveying device, 2 is a sealing material supply device, 3 is a heat sealing device, 4 is an adsorption device, 5 is a moving device, 6 is a stopping device, 7 is a positioning device, 8 is an inspection device, 11 is a feeder conveyor, 12 Is an affixing part conveyor, 13 is an inspection part conveyor, 21 is a feed conveyor, 25 is a cutter device, 31 is a hot plate, 41 is a blower, 42 is a suction stand, 51 is a lifting cylinder, 52 is a lateral movement cylinder, and 61 is a first moving cylinder. A stopper, 62 is a second stopper, A is a packaging box, B (B0 to B3) is a box material, C (C1 to C2) is a handle hole, R is a raw roll, S is a belt-like sheet, and T is a sealing material. .

Claims (4)

  A sealing material (T) capable of closing the handle hole (C) in the box material (B) that can be assembled to the packaging box (A) with the handle hole (C) is attached to the outer peripheral edge of the handle hole (C). A sealing material affixing device for use in the present invention uses a high-strength film with thermal adhesiveness that can be applied to the box material (B) by heating as the sealing material (T), and the sealing material (T ) Is attached to the outer peripheral edge of the handle hole (C) at the seal material application position (Q) by heat bonding using a heat seal device (3). apparatus.   2. The heat sealing device (3) according to claim 1, wherein the heat sealing device (3) is provided with an adsorption device (4) capable of adsorbing the sealing material (T), while the heat sealing device (3) is waiting for the sealing material (T). A packaging box handle comprising a moving device (5) for moving between a sealing material standby position (P) and a sealing material application position (Q) by the heat sealing device (3). Sealing device for holes.   In Claim 1 or 2, the said sealing material (T) per sheet | seat one by one by the cutter apparatus (25) at the front end side of the strip | belt-shaped sheet | seat (S) unrolled from the original fabric roll (R) wound by roll shape. A device for sticking a sealing material to a handle hole of a packaging box, characterized in that a material cut by length of the sealing material is supplied.   The handle hole (C) of the box material (B) transported by the transport device (1) according to any one of claims 1 to 3, wherein the box material (B) is transported by the transport device (1). Is provided with a stop device (6) for stopping the conveyance of the box material (B) at a position that has reached just below the seal material application position (Q) by the heat seal device (3). Sealing device sticking device for handle holes in packaging boxes.

Images