JPWO2005075185A1 - Paper box manufacturing equipment - Google Patents

Abstract

The present invention provides a paper box manufacturing apparatus capable of bending a side wall without breaking or deforming the side wall between the bottom wall (101) of the fed paper material (M) and the front side wall (103). of the pressing surface for pressing the fixed, and the fixing member (22 1, _{22 2)} the retracted position and a pressing position and a pressure receiving surface extending along a vertical plane passing through the muscle between the bottom wall and the front side wall in A pair of paper material fixing means (20 ₁ and 20 ₂ ) provided with a space between which can be lifted up and down and spaced apart in the width direction of the bottom wall, and a front side wall of the paper material fixed by the paper material fixing means. pressing the pair of folding means (50 1, _{50 2),} it folded forward side wall of said fixing member using the right angle fold bending roller press between the tip of the muscle and its forward side wall adjacent to the crimping means for crimping a front side wall and ears which are glued by pressing the face (60 1, _{60 2)} and has a provided.

Description

  The present invention relates to a paper box manufacturing apparatus, and more specifically, it is preliminarily cut into a predetermined shape and size, and a side wall and a connecting flap (hereinafter simply referred to as “ear”) are integrally formed on a bottom wall through a line (fold). The present invention relates to an apparatus for manufacturing a paper box by gluing a predetermined side wall of a paper material, bending the side wall and the ear, and adhering the side wall and the ear that have been glued.

As shown in an example in FIG. 10, side walls 102 ₁ , 102 ₂ , 103 ₁ , 103 ₂ and ears 104 ₁ , 104 ₂ ; 104 ₃ , 104 ₄ that are integrally formed on the bottom wall 101 via the line f are provided. with respect to the paper material M having side walls ₁₀₃ 1, 103 glued to _2, folded ears ₁₀₄ 1 to 104 _4, the side walls _{102 1,} 102 _2, 103 1, 103 ₂ fold and glued side walls and ears 104 ₁ the paper box to be manufactured by performing binding (adhesion) between - 104 _4, as shown in FIG. 10 (a), the ear ₁₀₄ 1 to 104 ₄ is adhered to the inner surface of the side wall ₁₀₃ 1, 103 ₂ an inner bonding type that is, as shown in FIG. 10 (B), there is an outer bonding type ear ₁₀₄ 1-104 ₄ is adhered to the outer surface of the side wall ₁₀₃ 1, 103 _2.
A paper box manufacturing apparatus for a paper box of an internal type is disclosed in Japanese Patent Application Laid-Open No. 2002-292761 filed by the applicant of the present invention. Further, the present applicant has disclosed in the specification of Japanese Patent Application No. 2002-370122 a paper box manufacturing apparatus capable of manufacturing both an outer sticking type paper box and an inner sticking type paper box.
In any of the paper box manufacturing apparatuses, it is necessary to bend the side wall and the ear so as to form a right angle with the bottom wall. The pressing member that presses the bottom wall of the paper material fed at the predetermined position against the paper material placement surface, and the side wall surface or the ear surface that passes through the position near the streak between the bottom wall and the side wall or the ear. And a bending member that moves on a certain plane at a right angle.

As the material of the paper box, various paper qualities (thickness and structure) such as cardboard and cardboard are used according to the protection requirement for the contained object. Therefore, it is desired that the folding member of the paper box manufacturing apparatus be attached so that its moving position can be adjusted according to the thickness of the paper material. However, in the above-mentioned prior art, the adjustment work is complicated, and even after the adjustment, the folding member always moves on a constant plane perpendicular to the side wall or the ear of the paper material. In the case of thick corrugated cardboard, the folding member applies a strong right angle to the side wall or near the ear muscle, resulting in breakage, cracking or deformation of the side wall or ear. Paper boxes lose their product value and may be disposed of.
The present invention has been made in view of the above points, and its problem is that the side wall or the ear is broken or deformed without requiring complicated adjustment work even when paper materials having various thicknesses are used. An object of the present invention is to provide a paper box manufacturing apparatus capable of producing an inner-sticking type or an outer-sticking type paper box with a high yield without performing the above, that is, a paper box manufacturing apparatus with a high yield.
In order to solve the above-mentioned problems, a paper box manufacturing apparatus according to the present invention is (a) near a streak between a bottom wall of a paper material fed at a predetermined position on a paper material placement surface and a front side wall of the paper material. In order to save the fixing member having a pressing surface for pressing and fixing to the paper material mounting surface, and a pressure receiving surface extending along a vertical plane passing through the line between the bottom wall and the front side wall of the paper material. A pair of paper material fixing means provided between the position and the pressing position so as to be able to move up and down, and spaced apart in the width direction of the bottom wall; and (b) the fixing means press and fix the paper material mounting surface. It is characterized in that it has a pair of folding means for pushing the front side wall of the paper material between the line adjacent thereto and the tip of the front side wall to bend at a right angle.
With the above configuration, after the paper material is fed to the predetermined position on the paper material mounting surface, the paper material fixing means is operated to move the paper material to the paper material mounting surface near the streak between the bottom wall of the paper material and the side wall. After pressing and fixing, the reciprocating means of the folding means is operated to move the folding means to the folding position. Meanwhile, the folding means push the front side wall between its tip and the streak. For this reason, the front side wall is gradually raised and finally bent at a right angle.
According to the invention of claim 1, since the side wall is pushed between the tip of the side wall and the streak, an unreasonable force is not applied to the side wall, so that the side wall is not broken or deformed, and is accurately perpendicular to the bottom wall. Can be bent.
According to a second aspect of the present invention, there is provided a holding member in which the folding means is provided on the side opposite to the direction in which the side wall is bent with respect to the side wall surface of the paper material fixed by the paper material fixing means, and the holding member. A bending member that is attached and bends the side wall by pressing the front side wall of the fixed paper material between the line adjacent thereto and the tip of the front side wall as the holding member reciprocates, and the holding member. A retracted position on the side opposite to the fixing member with respect to the line between the bottom wall and the front side wall of the paper member to which the bending member is fixed; and a bending position on the same side as the fixing member. It is characterized by comprising a reciprocating movement means for reciprocating between the two.
According to the invention of claim 2, the bending means has a simple structure of the holding member, the bending member and the reciprocating means, and the front side wall of the paper material having various thicknesses is bent at a right angle without being broken or deformed. It can be realized to be bent.
The invention according to claim 3 is characterized in that the folding member of the folding means is a roller rotatably held around an axis parallel to the line between the bottom wall and the front side wall of the paper material. .
According to the invention of claim 3, since the roller is used as the bending member, it is possible to cope with the thickness variation of the paper material within a range substantially equal to the radius of the roller, and damage, breakage, cracks, etc. of the side wall at the time of bending. Are better prevented. That is, the roller is moved in a direction perpendicular to the side wall at a position slightly apart from the line between the bottom wall and the side wall of the paper material fixed to the paper material mounting surface, so that the thickness of the paper material varies. Even if it is different, it can operate without the need to adjust the mounting position of the folding member. Then, since the bent side wall is pushed toward the pressure receiving surface of the fixing member, the side wall is not broken or deformed because unreasonable force is not applied to the side wall, and the side wall is bent at a right angle to the bottom wall. Be done.
The invention of claim 4 is characterized in that the holding member is also provided with crimping means for pressing the front side wall bent by the bent portion toward the pressure receiving surface of the fixing member.
According to the invention of claim 4, since the bending means and the crimping means are attached to the common holding member, the number of members required for the attachment can be reduced, and the control for position adjustment corresponding to these paper box sizes. Can be prevented from becoming complicated. Further, it is possible to drastically reduce the time and labor required to change the mounting position for changing the manufactured paper box from the inner sticking type to the outer sticking type or vice versa.
According to a fifth aspect of the present invention, the crimping means is provided on the side of the folding member of the holding member opposite to the front side wall of the paper material, and has a pressing surface parallel to the reciprocating direction of the holding member; It is attached to a holding member, and when the holding member is moved to a bending position, the pressure-bonding piece is composed of reciprocating means for reciprocating between a crimping position and a retracted position for releasing the pressing force. I am trying.
According to the invention of claim 5, the crimping means is provided on the side of the folding member of the holding member opposite to the front side wall of the paper material, and the crimping piece extends in a direction parallel to the reciprocating direction of the holding member. , Is attached to the holding member, and when the holding member is moved to the bending position, the reciprocating means for reciprocating the crimping piece between the crimping position and the retracted position is constituted, so that the mounting is easy. In addition, it is easy to change the mounting position.
Further, according to the present invention, the holding member of the folding means is supported by a common supporting member long in the width direction of the paper material fed on the paper material mounting surface so that the fixing position in the longitudinal direction can be adjusted. The holding member reciprocating means is composed of a single cylinder that reciprocates the supporting member in a direction perpendicular to the paper material fixed to the paper material mounting surface (claim 6 ).
According to the invention of claim 6, since the holding member reciprocating means is composed of a single cylinder for the pair of bending means, the structure of the paper box manufacturing apparatus is simplified and the manufacturing cost is reduced. It

  1 is a plan view conceptually showing the configuration of an example of a paper box manufacturing apparatus according to the present invention, FIG. 2 is a plan view of an embodiment apparatus, FIG. 3 is a sectional view taken along line XX of FIG. 2, and FIG. YY line sectional view, FIG. 5 is a block diagram showing a configuration example of a control system, FIG. 6 is a flowchart schematically showing a manufacturing process, FIG. 7 is an explanatory diagram showing the configuration and action of a bending portion and a crimping portion, FIG. 8 is a partially omitted cross-sectional view seen in the Z direction of FIG. 7, and FIG. 9 is a process schematic diagram showing the relationship between the manufacturing process and the change in the shape of the paper material when manufacturing the inner-stick type paper box. FIG. 10 is a plan view showing two types of general paper boxes.

Next, the best embodiment of the present invention will be described with reference to the drawings. The main part of the present invention, that is, the paper material fixing means and the folding means can be applied to both the paper box manufacturing apparatus of Japanese Patent Application No. 2002-370122 and the paper box manufacturing apparatus of Patent Document 1, and the folding means. Is applicable not only to the side wall bending but also to the ear bending. Hereinafter, a case where the invention is mainly applied to an inner-paste type paper box manufacturing apparatus will be described in detail.
1 is a plan view conceptually showing the principle and configuration of the paper box manufacturing apparatus, FIG. 2 is a plan view showing an example of a specific configuration of the paper box manufacturing apparatus, FIG. 3 is a sectional view taken along line XX of FIG. 4 is a sectional view taken along the line YY of FIG. 2, FIG. 5 is a block diagram showing a configuration example of a control system, FIG. 6 is a flowchart schematically showing a paper box manufacturing process by the paper box manufacturing apparatus, and FIG. 7 is a configuration of a folding mechanism. And FIG. 8 is a rear view of the folding mechanism of FIG. 7 in the direction of arrow Z, and FIG. 9 shows the relationship between the manufacturing process and the change in the shape of the paper material when manufacturing the inner-stick type paper box. It is a process schematic diagram which shows.
[Schematic configuration]
This paper box manufacturing apparatus has a frame 1. The frame 1 is, for example, the left and right side plates 2 ₁ , 2 _Two At the front end and the rear end of the connecting member 3 ₁ , 3 _Two It is connected by. And the side plate 2 ₁ , 2 _Two The paper material placing portion 10, the paper material fixing portion 20, the gluing portion 30, the edge folding portion 40, the side wall bending portion 50, the pressure bonding portion 60, the driving portion 70, the control portion 80, and the operating portion 90 are provided between them. ing. In the illustrated embodiment, the side wall bent portion 50 is configured to bend the front side wall upward so as to enable the manufacture of an inner type paper box. Hereinafter, each part will be described in detail.
[Paper material placement section]
As illustrated in FIG. 11, the paper material placing unit 10 cuts the paper material M cut according to the size of the paper box to be manufactured, and long side walls 102 thereof. ₁ , 102 _Two When the paper is fed from the bottom wall 101 to a predetermined position, the paper is accurately guided to the left and right positions of the paper material and is allowed to stand at the predetermined position. ₁ , 2 _Two Two horizontal strip-shaped movable tables 11 extending in parallel to the front-back direction ₁ , 11 _Two And the outer end of each movable table (side plate 2 ₁ , 2 _Two Ruler 12 erected at the end farthest from the center between ₁ , 12 _Two It consists of and. Movable table 11 ₁ , 11 _Two The paper material M can be placed on the upper surface of the.
The paper material mounting surface of the paper material mounting portion 10 is a short side wall 103 of the paper material. ₁ , 103 _Two When bending the upper part (that is, when the inner part is attached), the movable table 11 ₁ , 11 _Two Can be formed by the upper surface of the ₁ , 103 _Two If the table is bent downward (that is, if it is externally attached), the movable table 11 ₁ , 11 _Two On the top of the table 13 ₁ , 13 _Two Can be removably attached and configured on the upper surface thereof. Table 13 ₁ , 13 _Two Is formed in a block shape and has a support surface for supporting the bottom wall of the paper material on its upper surface and a pressure receiving surface perpendicular to the front end portion. And the mounting table 13 ₁ , 13 _Two Is the ruler 12 ₁ , 12 _Two From the vertical side to the inside ₁ , 2 _Two With a space slightly larger than the thickness of the paper material in the direction toward the center) and the pressure receiving surface is movable table 11 ₁ , 11 _Two It is fixed so that it exists in a common vertical plane with the front end face of the. In addition, the movable table 11 ₁ , 11 _Two The height from the upper surface of the sheet to the supporting surface is made equal to the maximum height of the side wall of the paper material M.
Here, an example of the structure of the paper material M will be described with reference to FIG. ₁ , 102 _Two Is the long side wall, 103 ₁ , 103 _Two Is the short side wall, 104 ₁ , 104 _Three Is the long side wall 102 ₁ Formed on both ends of the ear, 104 _Two , 104 _Four Is the long side wall 102 _Two Are ears formed at both ends of the. The terms long side wall and short side wall are used for convenience of identification of the side wall, and the long side wall and the short side wall may have the same length. The paper material M has a short side wall 103. ₁ , 103 _Two When bending up, the long side wall 102 ₁ , 102 _Two The short side wall 103 ₁ , 103 _Two When bending down, the long side wall 102 ₁ , 102 _Two In a state where the paper box manufacturing apparatus is turned upside down, the paper box manufacturing apparatus is loaded near the paper box manufacturing apparatus to prepare for the box making work.
Movable table 11 ₁ , 11 _Two The upper surface of the mounting table 13 ₁ , 13 _Two With the detached state, the bottom wall 101 of the paper material M having the long side walls raised can be placed and slid to a predetermined position when the above-mentioned inner-adhesion type paper box is manufactured. Ruler 12 ₁ , 12 _Two Promptly guides the paper material M to a predetermined paper feeding position in an accurate posture when feeding the paper material M.
Since the width of the paper material (the distance between the long side walls) differs depending on the type and size of the paper box, the movable table 11 ₁ , 11 _Two And ruler 12 ₁ , 12 _Two Are provided so that their intervals can be adjusted. That is, the support member 14 ₁ , 14 _Two On both the front and back sides, the left and right side plates 2 of the frame 1 ₁ , 2 _Two The guide rods 4a and 4b suspended in parallel with each other are slidably pierced and supported. Ruler 12 ₁ , 12 _Two Explaining an example of the configuration of the drive mechanism 70 for setting or adjusting the distance between them according to the size of the paper box to be manufactured, the left and right side plates 2 of the frame 1 will be described. ₁ , 2 _Two Between the guide rods 4a and 4b, the screw shaft 71a is rotatably supported in parallel with the guide rods 4a and 4b. ₁ , 14 _Two At the center in the front-rear direction, and is screwed. The screw shaft 71a is provided with screws 72 in opposite directions from the longitudinal center to both sides. ₁ , 72 _Two Has been cut. 73 in FIG. ₁ , 73 _Two Attaches the screw shaft 71a to the side plate 2 ₁ , 2 _Two It is a bearing that supports.
A rotational force is applied to the screw shaft 71a from a reversible rotation driving body installed in the frame 1 via a transmission means. As the reversible rotation driving body, for example, a stepping motor 74 (see FIG. 3) can be used. The transmission means can be configured, for example, by winding an endless chain 76 between sprockets 75a and 75b fixed to the screw shaft 71a and the rotation shaft of the stepping motor 74, respectively. The screw shaft 71a, the reversible rotation driving body (74) and the transmission means (75a, 75b, 76) are the ruler 12 ₁ , 12 _Two The driving means for setting the interval is constituted. The stepping motor 74 is electrically connected to a motor driver 81 of a control unit 80 mainly composed of a CPU and/or a sequencer, as shown in FIG. 5 and described later. The operation unit 90 provided on the front surface of the frame 1 is provided with an open switch SW1 and a close switch SW2 for performing a size setting operation. When the open switch SW1 is turned on, a size setting start command signal is sent to the control unit 80. To be given to.
Ruler 12 ₁ , 12 _Two When the drive mechanism 70 has moved to the maximum separation distance, an open limit switch SW3 composed of, for example, a micro switch or a photoelectric switch, which is operated by a ruler, is provided to detect this. As one embodiment, when the open switch SW1 is operated, the control unit 80 gives a one-way rotation command signal to the stepping motor 74 via the motor driver 81, and sends the one-way rotation command signal to both rulers 12 via the screw shaft 71a. ₁ , 12 _Two Are moved in a direction to separate them from each other. Further, the control unit 80 stops the supply of the one-way rotation command signal based on the operation of the open limit switch SW3. Then, when the close switch SW2 is operated, the other direction rotation command signal is given to the stepping motor 74, and the two rulers 12 are supplied via the screw shaft 71a. ₁ , 12 _Two Are designed to move in the direction of approaching each other. In order to detect the maximum approach distance when it is moved, for example, a closed limit switch SW4, which is operated by a ruler and includes a micro switch or a photoelectric switch, is provided.
Further, in this embodiment, a paper material sensor PS such as a micro switch or a reflection type photoelectric switch, which detects that the long side wall of the paper material contacts the ruler on the guide surface of one or both rulers. ₁ , PS _Two Is provided. This paper material sensor PS ₁ , PS _Two Can be configured such that, for example, a hole that opens in the guide surface of the ruler is provided, and the micro switch or the reflection type photoelectric switch is operated in the hole by the paper material that is in contact with the guide surface. In this way, after the distance between the rulers is widened to the maximum by the operation of the open switch SW2, the ruler 12 ₁ , 12 _Two Paper material is placed between the two, and both rulers are brought close to each other by the operation of the closing switch SW2. When both rulers come into contact with the side edges of the paper material, the paper material sensor PS ₁ , PS _Two By stopping the rotation of the stepping motor 74 based on the detection signal from, the distance between the rulers corresponding to the size of the paper box can be automatically set.
Two rulers 12 ₁ , 12 _Two A ruler 12 in front of ₁ , 12 _Two Positioning means 15 for stopping the paper material fed along the predetermined position is provided. This positioning means 15 is provided on the front side connecting member 3 ₁ Handle 15 on the front of the ₁ Screw rod 15 rotated by _Two Bearing 15 supported by the guide rod 4a or 4b. _Three The support member 15 is rotatably supported by the screw rod, and the screw portion at the tip of the screw rod is held by the frame 1 so as to be movable in the front-rear direction. _Four Screwed into the screw hole of the support member 15 _Four Stop member 15 ₅ Is fixed. Therefore, the handle 15 ₁ It is possible to change the stop position of the paper material at the time of paper feeding according to the height of the short side wall of the paper material M (the distance from the streak to the tip of the short side wall) by rotating right or left.
Thus, when the paper material M is fed, the line between the front short side wall and the bottom wall of the paper material M is moved. ₁ , 11 _Two Tip surface or mounting table 13 ₁ , 13 _Two When the pressure receiving surface of the front side and the common vertical surface coincide with each other, that is, when the paper is fed to a predetermined paper feeding position, the front end of the short side wall is stopped by the stop member 15. ₅ It is designed to be stopped by hitting.
The illustrated example shows the mounting table 13 ₁ , 13 _Two Although the height of the support surface is constant, the height of the support surface can be changed according to the height of the side wall of the paper material. In this case, a paper material mounting surface height adjusting mechanism as in the following example can be used. That is, the movable table 11 ₁ , 11 _Two A hole is provided in the central portion in the width direction of the table, and the mounting table 13 is placed in the hole. ₁ , 13 _Two Is provided so that it can be raised and lowered with respect to the paper feeding surface, and each mounting table 13 ₁ , 13 _Two The reciprocating means is connected to. The reciprocating means is, for example, as shown in FIG. 5, an electromagnetic switching valve (hereinafter, simply referred to as switching valve) V1 and a mounting table lifting cylinder S1. ₁ , S1 _Two And a piston rod (not shown), and the switching valve 22 is connected to a common compressor CP. The switching valve is designed to perform a switching operation in response to a control signal from the controller 80.
The above-mentioned paper material mounting surface height adjusting mechanism uses the reciprocating means to move the mounting table 13 when the box making operation is not performed. ₁ , 13 _Two The support surface of the movable table 11 ₁ , 11 _Two It is held in the standby position below the upper surface of the. On the other hand, when the box making operation is performed, the reciprocating means performs the switching operation of the switching valve based on the switching signal from the control unit 80, so that the mounting table 13 is moved. ₁ , 13 _Two Is raised to support a predetermined portion at least near the left end portion and near the right end portion on the long side wall side of the bottom wall of the paper material fed to the predetermined position in the upside-down state. Table 13 ₁ , 13 _Two The height of rise is approximately the same as the height of the long side wall of the manufactured paper box.
The paper material mounting surface height adjusting mechanism also includes a movable table 11 of the paper material mounting portion 10. ₁ , 11 _Two Since it is attached to the paper box, it can be linked to the size of the paper box, ₁ , 13 _Two Are driven by the drive mechanism 70 so as to have predetermined intervals corresponding to predetermined portions near both ends in the width direction of the bottom wall of the paper material fed to the predetermined positions.
[Paper material fixed part]
The paper material fixing portion 20 moves the bottom wall of the paper material M to the movable table 11 when the paper material M is fed to a predetermined position of the paper material placing portion 10. ₁ , 11 _Two Or mounting table 13 ₁ , 13 _Two The movable table is pressed against and fixed to the upper surface (paper surface on which the paper material is placed) and receives the ears bent by the edge folds 40 and the front side walls bent by the side wall folds 50, which will be described later. 11 ₁ , 11 _Two First paper material fixing mechanism 20 which is provided above the front end of the paper and operates near one widthwise end of the bottom wall of the paper material. ₁ And the second paper material fixing mechanism 20 that operates near the other end of the bottom wall in the width direction. _Two It consists of These paper material fixing mechanisms are configured symmetrically (see FIGS. 3 and 4).
Each paper material fixing mechanism includes a reciprocating means 21. ₁ , 21 _Two And a pressing member 22 that is moved between an operating position where the reciprocating means presses the paper material mounting surface and an upper retracted position that does not interfere with the sheet feeding. ₁ , 22 _Two Have.
Reciprocating means 21 ₁ , 21 _Two As shown in FIGS. 3 and 5, the pressing member elevating cylinder S3 is ₁ , S3 _Two And piston rod R3 ₁ , R3 _Two Cylinder S3 ₁ , S3 _Two Are connected to a common compressor CP via a common switching valve V3. The switching valve V3 is designed to perform a switching operation in response to a control signal from the controller 80.
Pressing member 22 ₁ , 22 _Two Is formed in a block shape, and the pressing surface for pressing and fixing the bottom wall of the paper material to the paper material mounting surface at the time of internal attachment is the lower end surface, and is horizontally inward by the selvage folding part 40 described later. The back has a pressure receiving surface that is bent upward by the bent ear and the side wall bent portion 50 and receives the short side wall pressed by the crimping portion 60 described later.
Paper material fixing mechanism 20 ₁ , 20 _Two Also presses the pressing member 22 in conjunction with the paper box size setting of the paper material loading unit. ₁ , 22 _Two Are driven by the drive mechanism 70 so as to have a predetermined interval corresponding to a predetermined portion near the left end or the right end of the front end of the bottom wall of the paper material fed to the predetermined position. That is, the reciprocating means 21 ₁ , 21 _Two Cylinder S3 ₁ , S3 _Two The support member 23 ₁ , 23 _Two Attached to the support member 23 ₁ , 23 _Two Left and right side plates 2 of the frame 1 on both the upper and lower sides of the ₁ , 2 _Two Guide rods 24a and 24b suspended in parallel between the two are slidably penetrated, and between the left and right side plates 2 of the frame 1 between them. ₁ , 2 _Two Bearing 73 between _Three , 73 _Four Screw rotatably supported via a screw shaft 71a, which has the same structure as the screw shaft 71a, and has screw threads 72 in opposite directions on both sides of the center in the longitudinal direction. _Three , 72 _Four The screw shaft 71b having ₁ , 23 _Two It is screwed to. The endless chain 76 is wound around the sprocket 75c fixed to the end of the screw shaft 71b.
When the box making operation is not performed, the reciprocating means 21 ₁ , 21 _Two Is the pressing member 22 via the switching valve V3. ₁ , 22 _Two The paper feeding surface, that is, the movable table 11 ₁ , 11 _Two Is held in a standby position that is raised above the upper surface of the. On the other hand, when performing a box making operation, the reciprocating means 21 ₁ , 21 _Two Is operated by the switching operation of the switching valve V3 based on the switching signal from the control unit 80. ₁ , 22 _Two The movable table 11 on the bottom wall of the paper material M fed to the predetermined position. ₁ , 11 _Two Down to the working position where it presses against the upper surface of. Then, the pressing member 22 ₁ , 22 _Two When is moved from the standby position to the operating position, the bottom wall of the paper material existing at the predetermined position is pressed and fixed to the upper surface of the movable table.
Pressing member 22 ₁ , 22 _Two After being lowered to the operating position, as will be described later, after finishing gluing, edge folding, side wall bending and crimping, the switching valve V3 is switched to return to the standby position again. Is becoming
[Gluing part]
The gluing section 30 is fed to a predetermined position on the paper material mounting surface and is fixed to the front short side wall 103 of the paper material M by the paper material fixing mechanism. ₁ Or 103 _Two The first gluing mechanism 30 for gluing glue to a predetermined part of the gluing part and gluing glue to one end side of the short side wall thereof. ₁ And a second gluing mechanism 30 for gluing glue to the other end of the short side wall. _Two And have.
First gluing mechanism 30 ₁ And second gluing mechanism 30 _Two Is each ruler 12 ₁ , 12 _Two It is installed in front of. Gluing mechanism 30 ₁ , 30 _Two Have in common a glue feeder 31 (see FIGS. 4 and 5) for supplying hot melt (a glue that has been melted by heating) pressurized by compressed air from the compressor CP, and the glue feeder 31 Pipe 32 branched into two ₁ , 32 _Two Hot melt gun 33 bonded by ₁ , 33 _Two Have. Hot melt gun 33 ₁ , 33 _Two As shown in FIG. 5, comprises a nozzle 33b having an electromagnetic valve 33a which is opened and closed based on a control signal from the control unit 80.
As shown in FIG. 2, left and right hot melt guns 33 ₁ , 33 _Two The left and right side plates 2 are provided as an example of means for enabling the setting and adjustment of the distance between the sheets according to the size of the paper box to be manufactured. ₁ , 2 _Two A guide shaft 34 is suspended between the guide shafts 34, and a support member 35 slidably supported by the guide shaft 34 is provided. ₁ , 35 _Two Glue system 30 ₁ , 30 _Two Is installed. 36 ₁ , 36 _Two Is the support member 35 ₁ , 35 _Two Is a lock member for operating and locking when is moved to a required position along the guide shaft 34.
Also, the gluing mechanism 30 ₁ , 30 _Two Is a hot melt gun 33 ₁ , 33 _Two Is connected to a reciprocating means 37 for reciprocating from a front standby position to a position spaced forward by a predetermined gluing distance. The reciprocating means 37 is composed of a gun reciprocating cylinder S2 and a piston rod R2. One end of the cylinder S2 and the piston rod R2 is the guide shaft 34, and the other end thereof is the connecting member 3. _Two Each is pivoted to. Sliders 37a are provided at both ends of the guide shaft 34. ₁ , 2 _Two It is slidably fitted in a guide groove 37c formed in a guide member 37b attached in the front and rear direction. The gun reciprocating cylinder S2 is coupled to the compressor CP via a switching valve V2, and the switching valve V2 is adapted to perform a switching operation by receiving a control signal from the controller 80.
Hot melt gun 33 ₁ , 33 _Two At the time of standby, the position where the nozzle 33b of the hot melt gun faces the vicinity of the streak on the front short side wall of the paper material fed at a predetermined position via the reciprocating means 37 (in this specification, Is called the standby position). Then, the control unit 80 causes the reciprocating means 37 to move the hot melt gun 33. ₁ , 33 _Two To open the solenoid valve 33a of the hot melt gun for a predetermined time while moving the sheet to a forward position beyond the tip of the front short side wall of the paper material (this may be referred to as an advance position in this specification). Thereby, the hot melt is ejected from the nozzle of the hot melt gun and the glue is adhered to a predetermined portion of the front short side wall of the paper material over a required length. The adhesive attachment length is determined by the relationship between the hot melt gun moving distance by the reciprocating moving means 37 and the opening time of the solenoid valve 33a, but it is not shown in advance according to the height of the short side wall of the paper material. Is set in the storage medium of the control unit 80 or the sequencer.
The reciprocating means 37 always keeps the hot melt gun 33. ₁ , 33 _Two Is held at the standby position above the short side wall of the paper material fed to the predetermined position and is operated, that is, when the switching valve V2 is switched by the control unit 80, the hot melt gun After moving to a predetermined position in front of the front short side wall, gluing between them, and reaching the advance position predetermined position, when the paper material M is taken out from the paper material placing portion, based on the detection by the paper material sensor, The switching valve V2 is switched again by the control unit 80 to return the hot melt gun to the standby position.
Gluing mechanism 30 of gluing section 30 ₁ , 30 _Two The gluing position by the hot melt gun is linked to the ruler 11 in conjunction with the size setting of the paper material loading section. ₁ , 11 _Two A drive mechanism that interlocks with the drive mechanism 70 may be provided so as to correspond to predetermined portions near both ends of the short side wall of the paper material set between the two. Although not shown, this drive mechanism uses, as an example, instead of the guide shaft 34, a screw shaft having a pitch equal to that of the screw shaft 71a in which screws in opposite directions are threaded on both sides of the center in the longitudinal direction. Member 35 ₁ , 35 _Two The endless chain 76 may be wound by screwing the endless chain 76 onto the screw shaft, fixing a sprocket to the end of the screw shaft, and winding the endless chain 76.
In this case, one drive source (74) can adjust the distance between the paper material placing unit 10 and the gluing unit 30 in an interlocking manner, and can reduce the cost and simplify the configuration. Further, it is possible to prevent the set values or the adjusted values from being inconsistent.
[Ear folding part]
The edge folding section 40 feeds the sheet to a predetermined position and inserts the ear 104 formed at the front end of the long side wall 102 of the paper material fixed by the paper material fixing mechanism into the pressing member 22 of the paper material fixing section 20. ₁ It is bent inward in a horizontal direction in cooperation with the pressure receiving surface of the paper, and one front ear 104 of the paper material. ₁ Standby position outside the front ear 104 ₁ A first selvage folding mechanism 40 having a first selvage folding piece that is moved between the inner and outer working positions. ₁ And the other front ear 104 of paper _Two Standby position outside the front ear 104 _Two A second edge folding mechanism 40 having a second edge folding piece that is moved to and from the working position on the inner side. _Two It consists of
Ear folding mechanism 40 ₁ , 40 _Two Also has a symmetrical shape, the ruler 12 ₁ , 12 _Two Reciprocating means 41 attached to the outer surface of the ₁ , 41 _Two And the ear folding piece 42 that is horizontally reciprocated by the reciprocating means. ₁ , 42 _Two It consists of
Reciprocating means 41 ₁ , 41 _Two 2 and 5, as in the case of the reciprocating means 21 for fixing the paper material 20 and the reciprocating means for the paper material folding portion, as shown in FIG. 2 and FIG. ₁ , S4 _Two And piston rod R4 ₁ , R4 _Two It consists of and. Cylinder S4 ₁ , S4 _Two Are connected to a common compressor CP via a common switching valve V4. The switching valve V4 is designed to perform a switching operation in response to a control signal from the controller 80.
When the box making operation is not performed, the reciprocating means 41 of the ear folding section 40 is used. ₁ , 41 _Two Is a selvage folded piece 42 via the switching valve V4. ₁ , 42 _Two The ruler 12 ₁ , 12 _Two It is held in a standby position where it does not project inward from the guide surface of. On the other hand, when the box-making operation is performed, the reciprocating means performs the switching operation of the switching valve V4 based on the switching signal from the control unit 80 to cause the selvage folding piece 42. ₁ , 42 _Two The ruler 12 ₁ , 12 _Two After protruding inward from the guide surface, the switching valve V4 is switched to return to the standby position. The ear tab is attached so that the ear can be adjusted in the front-rear direction so as not to damage the ear when protruding when the ear 104 is thick, and is made by bending the tip of a plate material having appropriate elasticity.
In this manner, the long side wall is raised, and the ear 104 formed at the front end of the long side wall of the paper material that is fed and fixed at the predetermined position. ₁ , 104 _Two Is 104 _Three , 104 _Four Is the ear flap 42 that is advanced to the operating position. ₁ , 42 _Two Is bent inward in the horizontal direction at the streak by the pressing member 22 of the paper material fixing portion. ₁ , 22 _Two It is designed to be close to the pressure receiving surface.
In the illustrated example, the edge folding portion 40 is a ruler 12 that constitutes a paper material placing portion. ₁ , 12 _Two Since it is attached integrally with, the edge folding piece 42 of the edge folding section 40 is interlocked with the gap adjusting operation of the paper material placing section. ₁ , 42 _Two The interval adjustment is also performed. However, the edge folding section 40 is attached to another supporting means like the gluing section 30 or the paper material placing section 20, and the edge folding piece 42 is attached by using the drive mechanism 70. ₁ , 42 _Two It can also be configured to adjust the interval of the.
[Side wall bent part]
The side wall bent portion 50 is fed to a predetermined position, and the front short side wall 103 of the paper material fixed by the paper material fixing mechanism. ₁ Or 103 _Two Is bent upward at right angles to the bottom wall 101, and acts on the front short side wall in the vicinity of one end in the longitudinal direction of the first bending mechanism 50. ₁ And a second bending mechanism 50 acting near the other end in the longitudinal direction of the front short side wall. _Two It consists of
The side wall bent portion 50 has both side plates 2 at both ends in the longitudinal direction. ₁ , 2 _Two Guide member 51 provided on the ₁ , 51 _Two (FIG. 3) has a common support member 52 which is supported so as to be able to move up and down while maintaining a horizontal state, and the bending mechanism 50 is provided on both sides of the support member. ₁ , 50 _Two Is provided. Bending mechanism 50 ₁ , 50 _Two Are symmetrically configured.
One folding mechanism 50 ₁ The bending mechanism 50 will be described with reference to FIGS. 4, 7 and 8. ₁ Is a holding member 53 ₁ And a bending member 54 provided above the holding member. ₁ And a reciprocating means 57. Bending member 54 ₁ Is the ruler 11 ₁ It is preferable that the roller is (not limited to) held rotatably about a horizontal axis that is perpendicular to the longitudinal direction of the. In the case of a roller, even if the thickness of the paper material differs within the range equal to the radius of the roller, there is an advantage that the intermediate position of the front side wall of the paper material can be pushed up comfortably when the roller is raised. An inverted U-shaped member may be used instead of the roller. Holding member 53 ₁ 55 fixed to the lower end of the ₁ Is saddled to the support member 52 so as to be movable in the longitudinal direction thereof, and the bolt 56 that penetrates the slider. ₁ Can be tightened or loosened with respect to the support member 52. Thereby, the bending mechanism 50 on both sides is ₁ , 50 _Two The spacing of can also be adjusted according to the size of the paper box to be manufactured.
The reciprocating means 57 is a bending mechanism 50 for moving up and down the side wall bending portion. ₁ , 50 _Two Is connected to the lower side of the central portion of the support member 52 in the longitudinal direction. The reciprocating means 57 includes a bending member 54. ₁ , 54 _Two It includes a bending cylinder S5 for moving up and down, a rod R5, and a switching valve V5 (see FIG. 5) connected to the cylinder S5. The bending cylinder S5 is a left and right side plate 2 ₁ , 2 _Two Connecting member 3 bridged between _Three Installed on. Bending member 54 ₁ , 54 _Two The pressing member 22 of the paper material fixing portion ₁ , 22 _Two When it is always elastically urged in the direction, various paper materials can be dealt with without adjusting its mounting position.
[Crimping part]
Holding member 53 ₁ , 53 _Two A crimp portion 60 is also attached to the. The crimping portion 60 is for pressing the glued portion of the front side wall 103 bent upward by the bending portion 50 to the ear bent horizontally inward to join it, and is a bilaterally symmetrical crimping portion. Mechanism 60 ₁ , 60 _Two Have. In the illustrated example, the crimping mechanism 60 ₁ Is provided below the bending member in the vertical portion of the holding member, and ₁ Crimping piece 61 having a pressing surface facing the front end surface of the ₁ Is attached to the vertical portion of the holding member 53, and the crimping piece 61 ₁ The movable table 11 whose pressing surface is the peripheral surface of the roller ₁ Movable table 11 than the vertical tangent line passing through the side part ₁ The retracted position retracted to the opposite side and the movable table 11 with respect to the vertical tangent line. ₁ Reciprocating means 62 for reciprocating between the working positions projecting to the side ₁ And have.
Reciprocating means 62 ₁ Is the crimping piece 61 ₁ Cylinder for bending S6 that reciprocates between the retracted position and the bent position ₁ And rod R6 ₁ And a switching valve V6 connected to the cylinder.
Front side connecting material 3 of frame 1 ₁ As described above, the operation unit 90 provided in the switch is provided with the open switch SW1 and the close switch SW2 for setting the size, and when the paper feeding to the predetermined position is completed, the box making operation is started. A start switch SSW is provided to activate the switch. The start switch SSW is preferably configured by a pedal switch that can be operated by an operator by stepping on the foot in an upright posture. This allows the engine to be started immediately after it is manually fed. It goes without saying that a sensor for detecting that the paper material has been fed to a predetermined position is provided and the detection signal of the sensor may be replaced with the start signal from the start switch SSW.
The first movable table 11 ₁ , First pressing and fixing mechanism 20 ₁ , First gluing mechanism 30 ₁ , First ear folding mechanism 40 ₁ , First folding mechanism 50 ₁ The first movable group of the second movable table 11 is divided into one or a plurality of supporting portions and attached. _Two , Second pressing and fixing mechanism 20 _Two , Second gluing mechanism 30 _Two , Second ear folding mechanism 40 _Two , Second folding mechanism 50 _Two And second crimping mechanism 60 _Two The second group of is divided and attached to another one or a plurality of supporting portions.
[Drive part]
The drive unit 70 has one or both of the first-group support unit and the second-group support unit, which are uniaxial at right angles to the long side of the paper material placed between the paper material placement units 10. By moving in the direction, a pair of left and right movable tables 11 of the paper material loading unit 10 ₁ , 11 _Two , A pair of left and right rulers 12 ₁ , 12 _Two , Mounting table 13 ₁ , 13 _Two When the table is attached, the pair of left and right mounting tables 13 ₁ , 13 _Two A pair of left and right gluing mechanism 30 of the gluing section 30 ₁ , 30 _Two A pair of left and right ear folding mechanisms 40 of the ear folding section 40 ₁ , 40 _Two , A pair of left and right bending mechanisms 50 of the bending portion 50 ₁ , 50 _Two And crimping mechanism 60 ₁ , 60 _Two It is for adjusting the distance between them according to the size of the paper box to be manufactured, and has a drive mechanism for reciprocating one or both of the support parts along the uniaxial direction. The drive mechanism may be configured such that a part of the supporting portion is screwed onto the screw shaft rotated by the handle, or, instead of the handle, the rotating shaft is attached to the screw shaft as described above. A given stepping motor may be combined.
[Explanation of action]
Subsequently, a process of manufacturing a box by using the apparatus having the above-described configuration and its operation will be described with reference to the drawings of FIGS.
[Size setting (P1 step in FIG. 6)]
First, when the open switch SW1 is pressed, the control unit 80 rotates the stepping motor 74 of the drive mechanism 70 in a predetermined direction, so that the screw shafts 71a and 71b are rotated in a predetermined direction, and the movable table 11 of the paper material stacking unit 10 is rotated. ₁ , 11 _Two And support member 14 ₁ , 14 _Two Through ruler 12 ₁ , 12 _Two And mounting table 13 ₁ , 13 _Two Are moved in the direction of opening the gap. When the maximum interval is reached, the control unit 70 stops the rotation of the stepping motor 74 based on the detection signal output from the open limit switch SW3.
Then open the ruler 12 ₁ , 12 _Two When the paper material M with the long side walls raised is placed between and the close switch SW2 is pressed, the control unit 80 rotates the stepping motor 74 in the opposite direction, so that the screw shafts 71a and 71b are rotated in the opposite direction and the ruler is moved. 12 ₁ , 12 _Two And mounting table 13 ₁ , 13 _Two However, they are moved in such a direction that the distance becomes smaller. Ruler 12 on both sides of the paper ₁ , 12 _Two When contacting the opposite surface of the paper sensor PS ₁ , PS _Two The control unit 80 stops the rotation of the stepping motor 74 based on the detection signal output by the controller. In addition, the paper feed positioning means 15 is operated to stop the stop member 15. ₅ Fix the position according to the width of the front short side wall. As a result, the distance between the rulers of the paper material placing portion 10, the distance between the placing bases, and the pressing member 22 of the paper material fixing portion 20. ₁ , 22 _Two Inter-distance, ear folds 42 of the ear folds 40 ₁ , 42 _Two Distance and crimping piece 61 of crimping portion 60 ₁ , 61 _Two The inter-distance is set according to the size of the paper material M used later. Bending member 54 of bending portion 50 ₁ , 54 _Two The distance is bolt 56 ₁ , 56 _Two Is operated to accurately set the gluing position of the paper material M with respect to the front side wall.
As for the gluing section 30, the hot melt gun 33 is placed at a predetermined gluing position on a short side wall of a predetermined paper material fed between the rulers after size setting. ₁ , 33 _Two Of the support member 35 so that the nozzles of ₁ , 35 _Two Move the lock member 36 ₁ , 36 _Two Fixed by. As described above, when the drive mechanism 70 is used for the gluing section 30, the nozzle of the glue feeder is positioned in conjunction with the paper material placing section 10.
[Paper feeding (P2 step in FIG. 6)]
When manufacturing a paper box of the internal sticking type, the mounting table 13 ₁ , 13 _Two Is removed. Then, as shown in FIG. 9A, the long side wall 102 ₁ , 102 _Two The paper material M on which the long side wall 102 has not yet been erected, as shown in FIG. ₁ , 102 _Two Cause The ruler 12 of the paper material placement unit 10 is arranged such that the long side walls of the first paper material M are oriented in the front-back direction in FIG. 2 (the left-right direction in FIG. 9). ₁ , 12 _Two When it is placed on the upper surface of the movable table in between and moved forward, the stop member 15 fixed to the predetermined position of the positioning means 15 when it has reached the predetermined position. ₅ Will be stopped by. As a result, the paper material is accurately positioned at a predetermined position on the paper material mounting surface.
[Box making (P3 step in FIG. 6)]
When the paper feed detection sensor detects that the paper has been fed to the predetermined position, the controller 80 first operates the paper material fixing mechanism (FIG. 6(2)). That is, a control signal is applied to the switching valve V3 so that the compressed air of the compressor CP is supplied to the paper material fixing cylinder S1. ₁ , S1 _Two The pressure member 22 that was supplied to the ₁ , 22 _Two Is lowered to a fixed position, and the bottom wall of the paper material is pressed and fixed to the paper material mounting surface.
Continuing from this, the controller 80 controls the gluing mechanism 30. ₁ , 30 _Two Are operated (FIG. 6(3)). That is, a control signal is given to the switching valve V2 to supply the pressurized fluid from the compressor CP to the gun reciprocating cylinder S2, and the hot melt gun 33 held at the standby position is supplied. ₁ , 33 _Two Is made to face a predetermined gluing site on the short side wall of the paper material stopped at a predetermined position and moved forward. At the same time, the control unit 80 controls the hot melt gun 33. ₁ , 33 _Two 9A, a control signal is applied to the electromagnetic valve 33a to open the valve for a predetermined time, and the glue is ejected from the nozzle 33b. As shown in FIG. ₁ The glue 105 is adhered to a predetermined portion of the above over the required length. After the spraying of the gluing is completed, the control unit 80 again gives the control signal to the switching valve V2 based on the detection of the takeout of the paper material M, and the hot melt gun 33. ₁ , 33 _Two To the standby position.
After performing the gluing, the control unit 80 gives a control signal to the switching valve V4 to cause the switching valve V4 to perform the switching operation, and pressurizes the fluid from the compressor CP with the edge folding mechanism 40. ₁ , 40 _Two Cylinder S4 for ear folding ₁ , S4 _Two Supply to Pitosun Rod R4 ₁ , R4 _Two The ear folding piece 42 held in the standby position as shown in FIG. 9D. ₁ , 42 _Two Is advanced to the bending position as shown in FIG. 9( e ), during which the long side wall 102 of the paper material fixed at the predetermined position. ₁ , 102 _Two Ear 104 formed at the front end of the ₁ , 104 _Two Is bent horizontally inward, and the pressing member 22 for fixing the paper material is used. ₁ , 22 _Two It is pressed against the pressure receiving surface (Fig. 6 (4)). As a result, as shown in FIG. ₁ , 104 _Two Can be bent horizontally at a right angle.
Immediately after the return operation of the ear folding mechanism, the control unit 80 controls the folding mechanism 50. ₁ , 50 _Two Are operated (FIG. 6(5)). That is, the control unit 80 gives a control signal to the switching valve V5 to cause the switching operation to switch the pressurized fluid from the compressor CP to the bending cylinder S5 of the reciprocating means 46. ₁ , S5 _Two Supply to Pitosun Rod R5 ₁ , R5 _Two And the folding member 54 held in the standby position as shown in FIG. 7(a). ₁ , 54 _Two 7B and 7C as shown in FIGS. 7B and 7C, the front short side wall 103 of the paper material which is fixed at a predetermined position is fixed to a predetermined position, and the line adjacent thereto and the front short side wall 103 thereof. The front short side wall 103 is bent substantially at a right angle to the bottom wall 101 while being pushed upward between them and further rising. Bending member 54 ₁ , 54 _Two Is made of a roller or a member with a curved upper part, the front short side wall 103 may be broken or cracked or deformed when an upward bending force is applied to the side wall 103. There is no.
The control unit 80 operates the pressure bonding unit subsequent to the upward bending operation of the front short side wall 103 (FIG. 6(6)). That is, the control unit 80 gives a control signal to the switching valve V6 to cause the switching valve V6 to perform the switching operation, and pressurizes the pressurized fluid from the compressor CP with the compression cylinder S6. ₁ , S6 _Two To the forward position of the pitson rod, and the crimping mechanism 60 ₁ , 60 _Two Crimping piece 61 held in the standby position in front of ₁ , 61 _Two (See FIG. 7) is advanced to the crimping position, and the front short side wall 103 bent upward of the paper material is pressed by the pressing member 22. ₁ , 22 _Two It is pressed toward the pressure receiving surface of. As a result, the glued portion of the front short side wall 103 is joined to the ear 104.
Crimping piece 61 ₁ , 61 _Two After a predetermined pressing time by the control unit 80, the control unit 80 again applies a control signal to the switching valve V6 to switch the switching valve V6, and the pressure bonding cylinder S6. ₁ , S6 _Two Push back the Pitosun rod through the ₁ , 61 _Two To the standby position. Then, a control signal is applied to the switching valve V5 to switch it, and the pitsoon rod is retracted via the pressure bonding cylinder S5 to hold the holding member 53. ₁ , 53 _Two And lower the folding member 54. ₁ , 54 _Two Is returned to the initial standby position shown in FIG. 7(a). When the crimping process is completed, the side wall bending reciprocating moving means and the crimping reciprocating moving means are restored, and the side wall bending action and the pressure bonding action are released.
With the above, a series of box making operations for one side of the long side wall and one short side wall of the paper material M are completed.
[Eject (P4 step in FIG. 6)]
Next, ruler 12 ₁ , 12 _Two The paper material M is taken out from the space. At this time, when the paper box is not completed (N in P5), as shown in FIG. 9(g), the semi-finished paper material is inverted back and forth along the horizontal plane (P6 in FIG. 6). It returns to step P2 of 6. That is, the long side wall 102 that has not been boxed yet ₁ , 102 _Two On the other side and the remaining short side wall 103 _Two , The paper material is transferred to the process of FIG. 9C again, and the ruler 12 ₁ , 12 _Two Guided by the stop member 15 ₅ It is fed to a predetermined position until it is stopped by, and the start switch SSW is stepped on again. After that, similarly to the case described above, the process from FIG. 9C to FIG. 9E is automatically performed. When the box-making operation for one paper material is completed and taken out at P4 in FIG. 6, as shown in FIG. 11(B), an inner pasting type paper box (B) whose ears are joined to the inner surface of the side wall (B). Is completed (Y in P5 of FIG. 6). The completed products are stacked in the loading space near the manufacturing equipment (P7 in FIG. 6). Each time one product is made, the paper feeding operation in step P2 is restarted.
[Other Embodiments]
According to the above-described embodiment, since the stepping motor 74 is used as the rotary driving body of the driving means, there is an advantage that size setting can be performed simply and quickly only by placing the paper material and operating the switch. However, as described above, the size can be set with an inexpensive configuration by using the handle as the rotary driving body.
The present invention is based on the premise that a side wall having ears is guided by a ruler and the side wall adjacent to the side wall is glued. In this case, even if one or both of the side wall guided by the ruler and the side wall to be glued are folded back walls, they can be applied by replacing the folding mechanism and the selvage folding mechanism with compatible ones. is there.
Further, the cylinder using the piston rod, which constitutes the reciprocating means, can be replaced by a rodless cylinder. Further, although the preferred embodiment has been described above on the assumption that the paper boxes having different sizes are manufactured, when the paper box having only one size is manufactured, the driving for changing the size described above is performed. No mechanism is needed. Further, the paper material placing portion 10, the paper material fixing portion 20, the edge folding portion 40, the bending portion 50, and the pressure bonding portion 60 are each a single movable table, a pressing member, an edge folding piece, a bending member and a pressure bonding piece. Can be reciprocated by a single reciprocating means.
Further, in the case of an externally pasted paper box manufacturing apparatus, the above-mentioned paper material mounting table 13 is provided on the upper surface of the movable table 2 in the above-mentioned embodiment. ₁ , 13 _Two This can be achieved by mounting and mounting the bending portion 50 and the crimping portion 60, and vertically flipping the mounting position and the vertical direction with the paper material mounting surface as a boundary. Then, in that case, the paper material whose side wall is erected is turned upside down and fed. In addition, the side wall bent portion 50 and the crimping portion 60 bend the glued front side wall downward by the side wall bent portion 50, and then once returned to the upper retracted position, the ear fold portion horizontally insets the front ear. After being bent back to the working position, the crimping part 60 is activated at that time, and the ears are pressed against the glued part of the front side wall to be crimped. In the above-described embodiment, the edge-folded piece 42 of the edge-folded portion 40. ₁ , 42 _Two Also, the bending member 54 in the side wall bending portion 50 ₁ , 54 _Two Similarly, a structure such as a roller that pushes between the tip of the ear and the muscle may be used.

Title: Paper box manufacturing apparatus

[0001]
【Technical field】
The present invention relates to a paper box manufacturing apparatus, and more specifically, it is preliminarily cut into a predetermined shape and size, and a side wall and a connecting flap (hereinafter simply referred to as “ear”) are integrally formed on a bottom wall through a line (fold). The present invention relates to an apparatus for manufacturing a paper box by gluing a predetermined side wall of a paper material, bending the side wall and the ear, and adhering the side wall and the ear that have been glued.
[Background technology]
As shown in an example in FIG. 10, side walls 102 ₁ , 102 ₂ , 103 ₁ , 103 ₂ and ears 104 ₁ , 104 ₂ ; 104 ₃ , 104 ₄ that are integrally formed on the bottom wall 101 via the line f are provided. with respect to the paper material M having side walls ₁₀₃ 1, 103 glued to _2, folded ears ₁₀₄ 1 to 104 _4, the side walls _{102 1,} 102 _2, 103 1, 103 ₂ fold and glued side walls and ears 104 ₁ the paper box to be manufactured by performing binding (adhesion) between - 104 _4, as shown in FIG. 10 (a), the ear ₁₀₄ 1 to 104 ₄ is adhered to the inner surface of the side wall ₁₀₃ 1, 103 ₂ an inner bonding type that is, as shown in FIG. 10 (B), there is an outer bonding type ear ₁₀₄ 1-104 ₄ is adhered to the outer surface of the side wall ₁₀₃ 1, 103 _2.
A paper box manufacturing apparatus for a paper box of an internal type is disclosed in Japanese Patent Application Laid-Open No. 2002-292761 filed by the applicant of the present invention. Further, the present applicant has disclosed in the specification of Japanese Patent Application No. 2002-370122 a paper box manufacturing apparatus capable of manufacturing both an outer sticking type paper box and an inner sticking type paper box.
In any of the paper box manufacturing apparatuses, it is necessary to bend the side wall and the edge of the paper material at right angles to the bottom wall. In both cases, a pressing member that presses the bottom wall of the paper material fed to the predetermined position against the paper material placement surface, and the side wall surface or the ear surface that passes through the position near the muscle between the bottom wall and the side wall or the ear And a bending member that moves on a certain plane that is perpendicular to.


1

[0005]
2 is a plan view showing two types of FIG.
BEST MODE FOR CARRYING OUT THE INVENTION
Next, the best embodiment of the present invention will be described with reference to the drawings. Hereinafter, a case where the invention is mainly applied to an inner-paste type paper box manufacturing apparatus will be described in detail.
1 is a plan view conceptually showing the principle and configuration of a paper box manufacturing apparatus, FIG. 2 is a plan view showing an example of a specific configuration of the paper box manufacturing apparatus, FIG. 3 is a sectional view taken along line XX of FIG. 4 is a sectional view taken along the line YY in FIG. 2, FIG. 5 is a block diagram showing a configuration example of a control system, FIG. 6 is a flowchart schematically showing a paper box manufacturing process by the paper box manufacturing apparatus, and FIG. And FIG. 8 is a rear view of the folding mechanism of FIG. 7 in the direction of the arrow Z, and FIG. 9 shows the relationship between the manufacturing process and the change in the shape of the paper material when manufacturing the inner-stick type paper box. It is a process schematic diagram which shows.
[Schematic configuration]
This paper box manufacturing apparatus has a frame 1. In the frame 1, as an example, the left and right side plates 2 ₁ and 2 ₂ are joined by connecting members 3 ₁ and 3 ₂ at the front end and the back end. Between the side plates ₂ 1, _{2 2,} a paper material support 10, the paper material fixedly unit 20, gluing unit 30, the ear folding unit 40, the side wall bent portion 50, the crimping portion 60, the driving unit 70, the control unit 80 and an operation unit 90 are provided. In the illustrated embodiment, the side wall bent portion 50 is configured to bend the front side wall upward so as to enable the manufacture of an inner-adhesive type paper box. Hereinafter, each part will be described in detail.
[Paper material placement section]
As illustrated in FIG. 11, the paper material placement unit 10 has the paper material M cut according to the size of the paper box to be manufactured, with its long side walls 102 ₁ and 102 ₂ standing upright from the bottom wall 101. When the paper is fed to a predetermined position in this state, it is for accurately guiding the left-right direction position of the paper material and allowing it to stand still at the predetermined position, and it is provided between the side plates 2 ₁ , 2 ₂ in the front-back direction. Two horizontal strip-shaped movable tables 11 ₁ and 11 ₂ extending in parallel and each movable


5

[0013]
When the paper material M is taken out from the paper material placing portion after the paper material M is moved to a predetermined position in front of the front short side wall of the paper, glued in between, and reaches the predetermined forward position, based on the detection by the paper material sensor. The control unit 80 switches the switching valve V2 again to return the hot melt gun to the standby position.
In the gluing mechanisms 30 ₁ and 30 ₂ of the gluing unit 30, the gluing position by the hot melt gun is linked to the size setting of the paper material placing unit and the short length of the paper material set between the rulers 11 ₁ and 11 _2. A drive mechanism that interlocks with the drive mechanism 70 may be provided so as to correspond to predetermined portions near both ends of the side wall. Although not shown, this drive mechanism uses, as an example, instead of the guide shaft 34, a screw shaft having a pitch equal to that of the screw shaft 71a in which screws in opposite directions are threaded on both sides of the center in the longitudinal direction. the member 35 _1, 35 ₂ with screwed to the screw shaft, by fixing the sprocket to the end of the screw shaft may be wound the endless chain 76.
In this case, one drive source (74) can be used to adjust the distance between the paper material placing portion 10 and the gluing portion 30 in an interlocking manner, and the cost can be reduced and the configuration can be simplified. Further, it is possible to prevent the set values or the adjusted values from being inconsistent.
[Ear folding part (flap bending means)]
Ear folding unit 40 to a predetermined position is fed, the ears 104 which is formed in the front end portion of the long side side wall 102 of the paper material which is fixed by the paper material fixing mechanism paper material fixing portion 20 pressing member 22 ₁ It is bent horizontally inward in cooperation with the pressure receiving surface, and moves between a standby position outside the _one front ear 104 ₁ of the paper material and an operating position inside the front ear 104 ₁ thereof. Between the first edge folding mechanism 40 ₁ having the first edge folding piece and a standby position outside the other front edge 104 ₂ of the paper material and an operating position inside the front edge 104 ₂ It has a second ear folding mechanism 40 ₂ and having a second ear folding piece to be moved.
The edge folding mechanisms 40 ₁ and 40 ₂ are also configured to be bilaterally symmetric, and reciprocating means 41 ₁ and 41 ₂ attached to the outer surfaces of the rulers 12 ₁ and 12 ₂ and reciprocating horizontally by the reciprocating means. The ear folds 42 ₁ and 42 ₂ are moved.
Reciprocating means 41 _1, 41 _2, as in the case of reciprocating means 21 and the reciprocating means of the paper material bent portion of the sheet material fixedly unit 20, as shown in FIGS. 2 and 5, sheet for folding ear


13/1

[0014]
It is composed of binders S4 ₁ and S4 ₂ and piston rods R4 ₁ and R4 ₂ . Cylinder _S4 1, S4 ₂ are connected to a common compressor CP via the common selector valve V4. The switching valve V4 is designed to perform a switching operation in response to a control signal from the controller 80.
When the box making operation is not performed, the reciprocating means 41 ₁ , 41 ₂ of the edge folding section 40 projects the edge folding pieces 42 ₁ , 42 ₂ inward from the guide surface of the rulers 12 ₁ , 12 ₂ via the switching valve V4. Do not hold in the standby position. On the other hand, when performing the box making operation, the reciprocating means moves the selvage folding pieces 42 ₁ , 42 ₂ from the guide surfaces of the rulers 12 ₁ , 12 ₂ by the switching operation of the switching valve V4 based on the switching signal from the control unit 80. After projecting inward, the switching valve V4 is switched to return to the standby position. The ear tab is attached so that the ear can be adjusted in the front-rear direction so as not to damage the ear when protruding when the ear 104 is thick, and is made by bending the tip of a plate material having appropriate elasticity.
In this way, the ears 104 ₁ , 104 ₂ ; 104 ₃ , 104 ₄ formed at the front end of the long side wall of the paper material that has been raised and raised and fixed at the predetermined position are advanced to the operating position. The folds 42 ₁ and 42 ₂ are bent inward in a horizontal direction in the streaks, and are brought close to the pressure receiving surfaces of the pressing members 22 ₁ and 22 ₂ of the paper material fixing portion.
In the illustrated example, the edge folding section 40 is integrally attached to the rulers 12 ₁ and 12 ₂ that form the paper material placing section, so that the edge folding section 40 operates in conjunction with the gap adjusting operation of the paper material placing section. The distance between the edge-folded pieces 42 ₁ and 42 ₂ of the folding section 40 is also adjusted. However, the edge folding section 40 is attached to another supporting means similarly to the gluing section 30 or the paper material placing section 20, and the drive mechanism 70 is used to adjust the distance between the edge folding pieces 42 ₁ and 42 _2. It can also be configured.
[Side wall bent part]
Side wall bent portion 50 is fed to a predetermined position, which bending the front short side sidewall 103 ₁ or 103 ₂ of paper material which is fixed by the paper material retaining mechanism perpendicular upward to the bottom wall 101, a first folding mechanism 50 ₁ acting in the vicinity of one longitudinal end portion of the front short side side wall, has a second folding mechanism 50 ₂ which acts in the vicinity of the other longitudinal end portion of the front short side sidewall ..


14

[0002]
DISCLOSURE OF THE INVENTION
As the material of the paper box, various paper qualities (thickness and structure) such as cardboard and cardboard are used according to the protection requirement for the contained object. Therefore, it is desired that the folding member of the paper box manufacturing apparatus be attached so that its moving position can be adjusted according to the thickness of the paper material. However, in the above-mentioned prior art, the adjustment work is complicated, and even after the adjustment, the folding member always moves on a constant plane perpendicular to the side wall or the ear of the paper material. In the case of thick corrugated cardboard, the folding member applies a strong right angle to the side wall or near the ear muscle, resulting in breakage, cracking or deformation of the side wall or ear. Paper boxes lose their product value and may be disposed of.
The present invention has been made in view of the above points, and its problem is that the side wall or the ear is broken or deformed without requiring complicated adjustment work even when paper materials having various thicknesses are used. An object of the present invention is to provide a paper box manufacturing apparatus capable of producing an inner-sticking type or an outer-sticking type paper box with a high yield without performing the above, that is, a paper box manufacturing apparatus with a high yield.
In order to solve the above-mentioned problems, the present invention provides a paper material in which a side wall and a connecting flap are integrally formed by cutting into a predetermined shape and size in advance through a streak on a bottom wall to a predetermined portion of the side wall. of gluing, said by the adhesion between the side walls and folding as well as the glued side wall and the flap of the flap, an apparatus for manufacturing a paper box has a pressing member having a pressing pressure surface and the pressure receiving surface, a paper material fixing means for pressing and fixing the bottom wall of said paper material has been fed to a predetermined position of the paper material placing surface in the sheet material mounting surface by said pressing surface, said by the previous SL paper material fixing means Flap folding means for bending the flap formed at the front end of the side wall of the paper material pressed and fixed on the paper material mounting surface toward the pressure receiving surface of the pressing member of the paper material fixing means; By pressing the front side wall of the paper material pressed and fixed on the paper material mounting surface by the paper material fixing means between the line adjacent to this and the tip of the front side wall, the pressing member of the paper material fixing means is pressed. a sidewall bending means bending toward the pressure receiving surface, the pre-Symbol sidewalls bent forward side wall which is folded by means and pressed against the pressure receiving surface of the pressing member of said paper material fixing means, before being glued the parts side wall saw including a crimping means for adhering to the flap, the paper material fixing means, a front side wall of the paper material of the bottom wall of the paper material which has been fed to a predetermined position location of the paper material placing surface A pressing surface for pressing and fixing to the paper material mounting surface in the vicinity of the streaks, and a pressure receiving surface extending along a vertical surface passing through the streaks between the bottom wall and the front side wall of the paper material. And a reciprocating means for reciprocating the pressing member from the retracted position to the pressing position, and a pair is provided at positions separated in the width direction of the paper material mounting surface, The side wall bending means is a holding member provided on the side opposite to the direction in which the side wall of the paper material fixed by the paper material fixing means is bent, and a reciprocating movement of the holding member attached to the holding member. A bending member that presses and bends the front side wall of the fixed paper material between the line adjacent to the line side wall and the tip of the front side wall, and the holding member with respect to the line. The pressing means comprises reciprocating means for reciprocating between a retracted position on the opposite side of the pressing member and a bending position on the same side of the pressing member, wherein the crimping means includes the side wall bending means. A pressing member which is provided on the side opposite to the front side wall of the paper material with respect to the folding member of the holding member of the means, and has a pressing surface parallel to the reciprocating movement direction of the holding member; and the holding member attached to the holding member. It is characterized in that it comprises reciprocating means for reciprocating the crimping piece between the crimping position and the retracted position when the material is moved to the bending position .
With the above configuration, after the paper material is fed to the predetermined position on the paper material mounting surface, the paper material fixing means is operated to move the paper material to the paper material mounting surface near the streak between the bottom wall of the paper material and the side wall. It is pressed and fixed, and the flap bending means operates to bend the flap of the paper material toward the pressure receiving surface of the pressing member. Subsequently, the side wall folding means is activated to push the front side wall between its tip and the streak. For this reason, the front side wall is gradually raised and bent at a right angle. Finally, the crimping means operates to press the bent front side wall toward the pressure receiving surface of the pressing member, so that the glued front side wall is adhered to the flap. Therefore, according to the present invention, since the side wall is pushed between the tip and the muscle,


2/1

[0003]
Since no excessive force is applied, the side wall is not broken or deformed, and it is bent exactly at a right angle to the bottom wall and directly crimped.
Further , according to the present invention, since the side wall bending means and the crimping means are attached to the common holding member, it is possible to reduce the number of members required for the attachment and to cope with these paper box sizes.


Three

[0004]
It is possible to prevent the control for adjusting the position to be complicated. Further, it is possible to drastically reduce the time and labor required to change the mounting position for changing the manufactured paper box from the inner sticking type to the outer sticking type or vice versa. Further, the crimping means is provided on the side opposite to the front side wall of the paper material with respect to the folding member of the holding member, and is attached to the holding member and a crimping piece extending in a direction parallel to the reciprocating direction of the holding member. , The reciprocating means for reciprocating the crimping piece between the crimping position and the retracted position when the holding member is moved to the bending position facilitates the mounting, Is easy to change.
Further, according to the invention of claim 6, the holding member of the folding means is fixed to the common supporting member which is long in the width direction of the paper material fed on the paper material mounting surface in the longitudinal fixing position. The holding member reciprocating means is constituted by a single cylinder that reciprocates the supporting member in a direction perpendicular to the paper material fixed to the paper material mounting surface.
According to the present invention, since the holding member reciprocating means is composed of a single cylinder for the pair of folding means, the structure of the paper box manufacturing apparatus is simplified and the manufacturing cost is reduced.
[Brief description of drawings]
1 is a plan view conceptually showing the configuration of an example of a paper box manufacturing apparatus according to the present invention, FIG. 2 is a plan view of an embodiment apparatus, FIG. 3 is a sectional view taken along line XX of FIG. 2, and FIG. YY line sectional view, FIG. 5 is a block diagram showing a configuration example of a control system, FIG. 6 is a flowchart schematically showing a manufacturing process, FIG. 7 is an explanatory diagram showing the configuration and action of a bending portion and a crimping portion, FIG. 8 is a partially omitted cross-sectional view seen in the Z direction of FIG. 7, and FIG. 9 is a process schematic diagram showing the relationship between the manufacturing process and the change in the shape of the paper material when manufacturing the inner-stick type paper box. Figure 10 shows a typical paper box


Four

Claims (6)

For a paper material that is previously cut into a predetermined shape and size and integrally formed with a side wall and a connecting flap on a bottom wall through a streak, glue the side wall to a predetermined portion and bend the side wall and the flap. And an apparatus for producing a paper box by adhering the side wall and the flap to which the glue is applied,
A pressing surface for pressingly fixing the bottom wall of the paper material fed at a predetermined position on the paper material mounting surface to the paper material mounting surface in the vicinity of the streak between the front side wall of the paper material, and A fixing member having a pressure receiving surface extending along a vertical surface passing through a streak between the bottom wall of the paper material and the front side wall is reciprocally provided between the retracted position and the pressing position, and the bottom wall of the bottom wall A pair of paper material fixing means arranged apart from each other in the width direction, and a front side wall of the paper material pressed and fixed to the paper material mounting surface by the paper material fixing means, and a streak adjacent to the front side wall and the front side wall. And a pair of folding means for pushing and bending at a right angle between the tip of the paper box and the front end of the paper box. The folding means includes a holding member provided on the side of the side wall of the paper material fixed by the paper material fixing means opposite to the direction in which the side wall is bent, and the reciprocating movement of the holding member attached to the holding member. A bending member that presses and bends the front side wall of the fixed paper material between the line adjacent to the line side wall and the tip of the front side wall, and the holding member with respect to the line. The paper box according to claim 1, comprising reciprocating means for reciprocating between a retracted position on the side opposite to the fixing member and a bending position on the same side as the fixing member. Manufacturing equipment. The folding member of the folding means is a roller which is rotatably held around an axis parallel to the line between the bottom wall and the front side wall of the paper material. Paper box manufacturing equipment. The paper box manufacturing apparatus according to claim 2 or 3, wherein the holding member is also provided with a crimping means for pressing the front side wall bent by the bending member toward the pressure receiving surface of the fixing member. Paper box manufacturing equipment. The crimping means is provided on the side opposite to the front side wall of the paper material with respect to the folding member of the holding member, and is attached to the holding member, and a crimping piece having a pressing surface parallel to the reciprocating movement direction of the holding member. The paper box manufacturing apparatus according to claim 4, further comprising a reciprocating movement unit that reciprocates the pressure-bonding piece between the pressure-bonding position and the retracted position when the holding member is moved to the bending position. The holding member of the folding means is supported by a common support member long in the width direction of the paper material fed to the paper material mounting surface so that the fixed position in the longitudinal direction can be adjusted. 6. A single cylinder that reciprocates the support member in a direction perpendicular to the paper material fixed to the paper material mounting surface, according to claim 2, 3, 4, or 5. Paper box manufacturing equipment.

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