JP2002255117A - Carton feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize stable formation of cartons in a parallelopiped in a carton corner forming mechanism by forming the carton into a parallelopiped while continuously holding diagonal corners of the carton after the carton is removed. SOLUTION: In the carton feeder wherein a carton magazine M in which a flat carton 1 is received by a carton holding frame 31 is provided, the carton is sucked from the carton holding frame of the carton magazine by means of a suction pad 3 and formed into a parallelopiped while being drawn out. The formed carton is supplied to a next process after the flat carton is removed and held by a pair of holding claws 5 and 6. While the diagonal corners of the carton are continuously held by the same claws, the pair of claws 5 and 6 are oppositely moved in directions corresponding to the diagonal corners to have the carton formed into a parallelopiped.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carton supplying apparatus for taking out cartons for filling a liquid one by one from a carton magazine, forming the cartons into a rectangular tube, and supplying the cartons.

[Prior art]

As shown in the plan view of FIG. 3, the carton supply device in the above-mentioned conventional liquid filling device has a tip outlet as a carton magazine M sized so that a flat carton 1 folded from a rectangular tube can pass through. A holding frame 31 having a plurality of flat cartons 1 is accommodated and stored in the holding frame 31. The flattened carton 1 is provided with a movable claw at an upper portion of a tip end outlet 32 of the carton magazine M and fixed claws 32, 32 paired at both ends. , And hold the leading end of the carton 1 which is stored and stacked in parallel on the carton guide.

The width of the holding frame 31 can be changed so as to correspond to the size of the carton 1 which changes depending on the capacity to be filled. In the flattened flat carton 1, one side of the carton is pressed laterally by a roller 33 or a curved guide 34 arranged in parallel with the height direction of the carton.

[0004] The carton take-out machine is configured to take out the flat carton 1 from the holding frame 31 of the carton magazine M by suction by a suction mechanism that sucks the flat carton 1. Then, the cartons are drawn in an arc around the rotation support shaft 39 by the take-out arm 37 having the suction pad 38 attached to the tip so that the surface adsorbed is perpendicular to the take-out surface of the holding frame 31 of the carton magazine M. Is taken out.

[0005] Further, the take-out arm 37 is
A plurality of the suction pads 38 that are in close contact with the carton 1 are attached to a surface of the holding frame 31 of the carton magazine M facing the carton 1 in a wide direction in the height direction (perpendicular to the drawing). A hole is formed at the center of the suction pad 38, and the suction pad 38 is connected to a hose connected to a negative pressure air generation source.

The suction pad 38 sucks one side surface of the flat carton 1 which is not caught by the fixed claws and the movable claws of the carton magazine M, and pulls the carton 1 forward. Then, the side surface of the carton 1 is pressed against a roller 33 or a curved guide 34 which is arranged side by side with the height direction of the carton as a roller axial direction. Next, there is an L-shaped frame 35 (corner holding claw) for pressing and holding the corner 1a portion of the carton 1 which is pressed against the roller 33 or the like and spread into a rectangular cylindrical shape,
An L-shaped frame 36 (corner holding claw) is also provided at a diagonal corner of the corner pressed by the L-shaped frame 35 of the rectangular cylinder, and holds the carton 1 in a rectangular cylindrical shape.

As shown in FIG. 3, the carton supply apparatus having the above-described structure moves the take-out arm 37 in the forward direction so as to face the opening 32 of the holding frame 31 of the carton magazine M in a direction parallel to the carton magazine M. The flat carton 1 is sucked and held by the pad 38, and then the take-out arm 37 is moved (returned) in the vertical direction with respect to the opening 32 of the holding frame 31 to the original state. As a result, the side surface of the carton 1 is pulled and the holding frame 3 of the carton magazine M is pulled.
1, the upper side of the carton 1 is caught by the fixed claws and the movable claws and remains, and the carton 1 is spread back and forth, and one side is pressed against the rollers 33 or the curved guides 34 to form a square tube. Molded.

When the carton 1 is pressed against the rollers 33 or the curved guides 34 to form a substantially rectangular tube, the carton 1 is further pulled as it is, and the diagonal corners 1a and 1a on the diagonal line of the carton 1 Are supported by a pair of receiving frames 35 and 36 (corner holding claws) opposed to. In this state, the take-out arm 37 and the suction pad 38
Moves backward, the suction pad 38 stops the air suction operation, and comes off the rectangular cylindrical carton 1 supported by the receiving frames 35 and 36. Thereafter, the lifting device below the supported rectangular tubular carton 1 operates, and the carton 1
The lower part is extruded, and the square tubular carton is attached to and held by the mandrel of the bottom forming machine waiting at the upper part.

In the liquid filling device equipped with the above-mentioned carton supply device, cartons having different carton sizes and heights are flowed according to the volume of the liquid to be filled. Therefore, in the carton supply device, even if the size of the carton changes, the flat carton can be reliably taken out of the holding frame 31 of the magazine M and supplied to the carton box filling step of the liquid filling device.

[0010]

In the above-mentioned carton supply device, the take-out arm 37 is repeatedly rocked and moved so that the carton 1 is suction-held by the suction pad 38, and then the take-out arm 37 and the suction pad 38 are returned to the original state. By moving the carton 1 to the state, the side of the carton 1 is pulled out of the carton magazine M, and the upper side of the carton 1 is hooked on the fixed claws and the movable claws to remain. 33 or a curved guide 34 to form a rectangular tube. However, the carton itself is held only by the suction pad and the roller 3
3, or a roller 33 or a curved guide 34 to the carton 1 against a removing force (pulling force) when the cylindrical member 34 is taken out by being brought into contact with the curved guide 34 and formed into a cylindrical shape.
In many cases, the cartons fall off from the suction pad 38 due to the resistance force such as impact or friction from the pad, resulting in poor productivity.

For this reason, in the above-mentioned carton supply device, since the carton itself is held only by the suction pad 38, when the carton comes into contact with the roller 33 or the curved guide 34 and is formed into a rectangular tube shape. In addition, it is required to have an adsorbing force enough to withstand the resistance to the impact or friction on the carton, and the surface on which the carton is adsorbed is often curved round due to the resistance due to the impact or friction on the carton.

The present invention provides a carton supply device capable of taking out a carton from a carton magazine and forming the carton stably while immediately maintaining the diagonal of the carton, thereby stably supplying the carton. What you want to do.

[0013]

According to a first aspect of the present invention, a flat carton 1 is formed in a flat shape in which one part is parallel to a carton take-out surface from an outlet 32 of a carton magazine M in which the flat cartons 1 are stacked and stored. A take-out mechanism for taking out the carton, and a pair of holding claws 5, 6 facing the outside of the take-out opening for holding a diagonal of the flat carton taken out,
The pair of holding claws 5, 6 are interlockingly moved while facing each other in a direction corresponding to the diagonal of the carton, and are formed into a rectangular tube while continuously holding the diagonal of the carton. A carton supply device comprising means 20.

Next, the invention according to claim 2 of the present invention relates to a pair of flat cartons which are taken out one by one in parallel with a carton take-out surface from an outlet of a carton magazine in which flat cartons are accumulated and stored. Carton take-out forming means for forming a square tube while holding the corners, the carton take-out and forming means comprising a parallel link for moving the link from the opposite side parallel to the carton take-out surface to the vertical outside centering on the support shaft. A carton supply device comprising: a moving mechanism; and a pair of holding claws that hold a diagonal of the carton until it is formed into a rectangular tube while holding a diagonal of a flat carton.

Next, the invention according to claim 3 of the present invention relates to a pair of flat cartons which are taken out one by one in parallel with a carton take-out surface from an outlet of a carton magazine in which flat cartons are accumulated and stored. Carton take-out forming means for forming a square tube while holding the corners, the carton take-out and forming means comprising a parallel link for moving the link from the opposite side parallel to the carton take-out surface to the vertical outside centering on the support shaft. A moving mechanism, and a pair of holding claws for holding the diagonal of the carton until it is formed into a rectangular tube while holding the diagonal of the flat carton, and holding one of the pair of holding claws. A carton supply, wherein a pawl is provided integrally with the parallel link moving mechanism, and the other holding pawl is provided integrally with a bracket that rotates about a support shaft following the parallel link moving mechanism. It is the location.

According to a fourth aspect of the present invention, in the carton supply device according to any one of the first to third aspects of the present invention, the carton is provided by replacing the holding claw which holds the carton diagonal. A carton supply device characterized in that it can respond to a change in the square size of a carton.

According to a fifth aspect of the present invention, in the carton supply device according to any one of the first to fourth aspects, the holding claw for holding a carton diagonal has a flat shape. A carton supply device characterized in that a rectangular tube-shaped carton formed into a rectangular tube while maintaining a carton diagonal is used as a part of a guide for inserting into a mandrel for holding and forming a carton bottom.

As described above, according to the present invention, the carton magazine M for storing and storing the cartons 1 in a flat shape is installed, and the carton 1 is taken out from the carton holding frame 31 of the carton magazine M by suction with the suction pad 38. In a carton supply device for feeding the formed carton 1 to the next process while the flat carton 1 is being taken out and before the carton 1 is formed into a rectangular tube shape, the diagonal of the carton 1 In order to realize a stable carton square tube shape by eliminating the resistance due to the impact and friction on the carton 1 by forming the carton 1 into a square tube while holding the part (diagonal corner portion) continuously. Is provided with a carton removal molding means 20.

The present invention also provides a carton forming mechanism for realizing a stable carton square tube forming by taking out the carton 1 and forming it into a rectangular tube while maintaining the diagonal of the carton. Further, there is provided a carton take-out / molding means 20 which can take out the flat carton 1 from the carton magazine M, sandwich the carton 1 in a diagonal direction thereof, and hold the carton 1 until it is formed into a rectangular cylindrical shape.

[0020]

The carton feeding device is provided with a diagonal 1 of the carton 1.
a, a pair of holding claws 5, 6 facing in parallel to the surface of the outlet 32 of the carton magazine M as means for holding the
After the flat carton 1 is taken out from the carton magazine M containing the carton 1 with the suction pad 3 and held by the holding claws 5 and 6 until the flat carton 1 is sandwiched in the diagonal direction, While continuously holding the flat carton 1 with the holding claws 5, 6, the opposing holding claws 5, 6 are set at about 45 ° with respect to the outlet 32 surface of the magazine M.
The flat carton 1 can be formed into a rectangular tube-shaped carton by performing the moving operation in the outward direction opposite to the angle.

When the flat carton 1 is taken out of the carton magazine M by the suction pad 3 in a flat state, the diagonal direction of the flat carton 1 is sandwiched by the holding claws 5 and 6. Then, the flat carton 1 is further taken out, and the drive rotary shaft 7 in the parallel link moving mechanism L of the carton take-out and forming means 20 for forming into a rectangular tube shape while continuously maintaining the diagonal thereof is moved by a predetermined angle. By rotating, the carton 1 is opened in the shape of a rectangular tube while its diagonal is maintained.

At this time, of the holding claws 5 and 6 arranged diagonally of the carton 1,
The holding claws 5 on the outer side of the rotation of the parallel link moving mechanism L by the zero drive rotation shaft 7 are integrally attached to the carton ejection and molding means 20, and the parallel link movement mechanism by the drive rotation shaft 7 of the carton ejection and molding means 20. The holding claw 6 inside the rotation of L is attached to the bracket 14 supported by the drive rotation shaft 8 which is rotated and transmitted synchronously by the belt or gear with respect to the drive shaft 7 of the carton unloading and molding means 20. As a result, the pair of holding claws 5, 6
Move while maintaining the positions corresponding to the diagonal directions of the carton 1 which is always formed into a rectangular tube shape from a flat shape.

When the driving rotation axis of one of the holding claws 5 and 6 arranged at the diagonal of the carton 1 is rotated by a certain angle, the driving rotation axis of the other is also rotated, and the carton 1 is turned. The holding claws operate in such a manner as to draw a locus that moves when being formed into a cylindrical shape.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a carton supply device according to the present invention will be described with reference to FIGS. 1 and 2. In the carton supply device according to the present invention, a rectangular cylindrical carton is folded flat (flat). A holding frame 31 in which a plurality or a number of flat cartons are vertically erected and collected and stored, and an outlet 32 for taking out (pulling out) one piece (sheet) of the flat carton 1 at the tip of the holding frame 31. Carton Magazine M
And the flat carton 1 from the outlet 32 of the magazine M.
Are taken out one by one, and the carton for forming the rectangular tube-shaped carton while holding the diagonals 1a, 1a of the flat carton 1 taken out and holding the diagonal continuously. It is provided with an ejection molding means 20.

The carton removal / molding means 20 of the carton supply device of the present invention includes a drive rotating shaft 7 (support shaft) as a center.
A parallel link moving mechanism L is provided to move the link in a parallelogram shape from a side parallel to and opposite to the take-out surface of the carton 1 in the take-out port 32 of the magazine M from a side parallel to and away from the side.

The parallel link moving mechanism L includes a main arm 13, non-rotating link arms 9, 10 which do not rotate relative to the outlet 32 of the magazine M, and a link connecting the non-rotating ring arms 9, 10. The arms 9, 10, 11, and 13 form four sides of a parallelogram.

One end of the main arm 13 is rotatably supported by a driving rotary shaft 7 which is driven to rotate. The rotary shaft 7 can be repeatedly driven and rotated in forward and reverse directions by a driving rotary gear 7a. By repeatedly rotating the shaft 7, the main arm 13 repeatedly swings and rotates around the rotating shaft 7 as shown in FIG. 1.

The non-rotating ring arm 9 includes the main arm 1
The non-rotatable link arm 10 is rotatably supported on the support shaft 12 rotatably supported at the other end of the drive shaft 3 and rotatably supports the main arm 13 to rotate. Non-rotating ring arms 9 and 1 are rotatably supported by a non-rotating fixed non-rotating shaft
0 are connected to each other by a connecting arm 11 via free rotation support shafts 9a and 10a.

Accordingly, while the main arm 13 repeatedly swings and rotates around the rotation shaft 7, the non-rotational link arm 10 supported by the non-rotational shaft portion 7b and the connecting link arm 11 The non-rotating ring arm 9 connected by the above does not rotate, the arms 9 and 10 maintain the same direction with respect to the main arm 13, and the arm 9 rotates around the rotation shaft 7 by the repetitive swinging rotation of the main arm 13. The main arm 13 is repeatedly rotated around the radius.

As shown in FIG. 1, the main arm 13 swings and rotates at a predetermined angle about the drive rotation shaft 7 so that the main arm 13 moves to the outlet 32 at the tip of the holding frame 31 of the carton magazine M. It can be moved to a position facing in the parallel direction (a position shown by a dotted line) and a vertical outside position (a position shown by a solid line).

The non-rotating non-rotating link arms 9 and 10, which are linked to the main arm 13 so as to be freely rotatable in a parallelogram shape by the swinging rotation of the main arm 13 of the parallel link moving mechanism L, are connected to the main arm 13. While rotating relative to the carton magazine M, it does not rotate relative to the carton magazine M, and swings following the main arm 13 while maintaining the same posture.

As shown in FIG. 1, the non-rotating link arm 9 of the parallel link moving mechanism L
A support portion 15 for integrally supporting the air cylinder 4 for moving the suction head 2 forward and backward with respect to the support 2 is integrally provided, and the support portion 15 is opposed to the take-out surface of the carton outlet 32 of the magazine M in parallel. The suction head 2 is provided with an air suction mechanism, and the suction head 2 is provided with a suction pad 3, and a flat carton is taken out of the outlet 32 of the carton magazine M one by one. The take-out mechanism is configured.

As described above, the carton take-out / molding means 20 having the above-described parallel link moving mechanism L is provided by the parallel link moving mechanism L as shown in FIGS.
Can be moved to a position facing the outlet 32 at the tip of the holding frame 31 of the carton magazine M in a parallel direction and a position outside in the vertical direction.

The flat carton 1 and the rectangular cylindrical carton 1 are positioned in the diagonal directions of the flat carton 1 and are formed in the rectangular cylindrical shape while holding the diagonal of the flat carton 1. Diagonal 1a, 1a of carton until molded
Is provided.

One holding claw 5 is a parallel link moving mechanism L
The other holding claw 6 is provided integrally with the supporting portion 15 of the suction pad 3 on the outside thereof, and the other holding claw 6 is provided on the drive rotating shaft 7 for driving the parallel link moving mechanism L for link movement and the timing belt or chain or gear. The bracket 14 is provided on a bracket 14 that is driven and rotated repeatedly and oscillating about a oscillating rotation shaft 8 that is oscillated and synchronizes and oscillates in a synchronized manner, and is formed into a rectangular cylindrical shape while maintaining the diagonal of the flat carton 1. To maintain the diagonal of the carton.

In the above-described carton supply device of the present invention, the diagonal 1
a, by replacing one or both of the pair of holding claws 5 and 6 for holding the car nails 1, the distance between the holding claws 5 and 6 in the diagonal direction is appropriately adjusted. It is designed to be able to respond to changes in square dimensions.

Further, in the carton supply device of the present invention, the mounting position of the pair of holding claws 5, 6 for holding the diagonals 1a, 1a of the carton 1 can be changed. For example, a screwing mechanism using a long hole and a screw) is provided, and a pair of the holding claws 5 are provided.
6, by changing one or both of the mounting positions, the distance between the holding claws 5 and 6 in the diagonal direction can be appropriately adjusted to cope with a change in the square size of the carton 1. You may do so.

Further, in the carton supply device of the present invention, the holding claws 5, 6 for holding the carton diagonal are formed into a rectangular tube shape while holding the flat carton diagonal by the carton take-out and forming means 20. After that, the carton 1 which is held in the form of a rectangular tube is pushed up by a pushing means (not shown) provided therebelow, and a mandrel (rotation support shaft) for forming and holding the bottom of the carton installed thereabove. May be part of an insertion guide for insertion into a plurality of carton supporting shaft bodies, not shown, provided radially around the center.

As described above, the carton supply device of the present invention comprises, as shown in FIG. 1, a carton magazine M and a parallel link for taking out the carton 1 from the carton magazine M and forming the carton 1 into a rectangular cylindrical shape. And a carton removal / molding means 20 having a moving mechanism L.

Carton outlet 32 of carton magazine M
Magazine bottom part, magazine side (side)
A fixed claw 3 for hooking the carton 1 at the tip of the stacking carton in which the flat carton 1 is stacked up
2 are arranged, and a movable claw (not shown) that can move up and down is arranged at a magazine top portion.

As shown in FIG. 1, the carton 1 is taken out by adsorbing the carton 1. Then, the removed carton 1 is set so that the surface to be adsorbed is parallel to the outlet 32 of the carton magazine M.
The suction pad 3 attached to the suction head 2 is taken out by operating the air cylinder 4 by extending and shortening the air cylinder 4. For example, as shown in FIG. 1, the suction head 2 is long in the height direction of the carton, and the surface of the suction head facing the carton is provided with a suction pad 3 (for example, an elastic suction pad) which can be in close contact with the carton. Rubber pads or flexible plastic pads).

The suction head 2 has a hollow structure, and a hole is formed in the center of the attached suction pad 3. Then, a hose connected from the suction head 2 to a negative pressure generation source (not shown) is connected so that a negative pressure acts on the suction pad 3.

Next, the operation order of the carton supply device of the present invention will be described below. First, as shown in FIG. And the swinging bracket 14 is rotated counterclockwise about the swinging rotation shaft 8 so as to move in a direction parallel to the outlet 32 at the tip of the holding frame 31 of the carton magazine M. Move the holding claws 5, 6
Are made to face both outer sides of the outlet 32.

Next, the suction pad 3 attached to the suction head 2 is moved to the holding frame 3 of the magazine M by the extension operation of the air cylinder 4 having the suction head 2 attached to the tip of the operating rod.
(1) The flattened carton (1) exposed at the outlet (32) at the tip is pressed against the flat carton (1), and the carton (1) is sucked by air.
Is held by suction.

Next, as shown in FIG. 2A, the flat carton 1 is taken out by the shortening operation of the air cylinder 4, and the diagonals 1a, 1a of the taken out flat carton 1 are taken out.
Is held by the opposing holding claws 5 and 6. After the flat carton 1 is held by the holding claws 5 and 6, the suction pad 3 is released from the carton 1 by stopping the air suction operation, and the suction pad 3 is shortened by the air cylinder 4. To the original standby position. Note that the operation start timing of the suction operation of the suction pad 3 for the air suction and the retreat movement operation is flattened by setting and adjusting the operation timing so that the suction pad 3 starts the retreat movement operation before the air suction stop operation. The flat carton 1 with the habit is formed into the next rectangular cylindrical carton because the flat carton 1 is pulled toward the front by the suction pad 3 and opened in a slightly thin diamond shape. The process can move smoothly.

Next, as shown in FIG. 2 (b), when the flat carton 1 is in a state where the diagonals 1a and 1a are held by the opposing holding claws 5 and 6, the rotating shaft 7 The parallel link moving mechanism L of the carton unloading and molding means 20 and the swing bracket 14 about the rotary shaft 8 are pivoted about the diagonal 1a, 1a,
In a state where the portion a is continuously held, the backward movement interlocking rotation is started in the clockwise direction, and a pair of holding claws 5 and 6 are provided.
Is an outlet 32 at the tip of the holding frame 31 of the carton magazine M
Get away more.

Subsequently, as shown in FIG. 2C, the pair of holding claws 5 and 6 are moved outward from the outlet 32 at the tip of the holding frame 31 of the carton magazine M, and the distance between the holding claws 5 and 6 is reduced. As shown in FIG. 2 (d), the carton 1 is formed into a rectangular cylindrical shape by moving backward and stopping at a position facing the carton take-out surface of the take-out opening 32 at an angle of about 45 °.

Subsequently, the carton 1 formed into a rectangular tube shape
Using the pair of holding claws 5 and 6 as a guide, the upper and lower claws 5 and 6 are slid by a lifting means (not shown) disposed below the carton 1 to separate from the upper and lower carton bottom moldings. To a carton holding mandrel (not shown).

Subsequently, the parallel link moving mechanism L of the carton unloading and forming means 20 about the rotating shaft 7 and the swing bracket 14 about the rotating shaft 8 are rotated counterclockwise in the forward movement to rotate the carton magazine. The holding claws 5, 6 are moved to the outer sides of the opening 32 by moving the holding claws 5, 6 to a position facing the carton removal surface of the outlet 32 at the tip of the holding frame 31.

By repeating the above operations, the flat cartons 1 accumulated in the carton magazine M are sequentially taken out, formed into a rectangular tube shape, and supplied in the mandrel direction.

[0051]

According to the carton supply device of the present invention according to the first aspect of the present invention, there is provided a means capable of taking out the carton and forming it into a rectangular tube while maintaining the diagonal of the carton. As a result, the rectangular tubular carton can be reliably sent to the mandrel for bottom molding, and productivity is greatly improved.

According to the carton supply device of the invention according to the second aspect of the present invention, since the carton supply device is provided with the link mechanism which moves in parallel with the carton take-out surface, the diagonal shape of the carton is maintained while the diagonal of the carton is maintained continuously. And a stable carton square tube shape can be realized.

According to the carton supply device of the invention according to claim 3 of the present invention, the carton is taken out of the carton magazine for storing the carton with respect to the holding claw which is a means for holding the diagonal of the carton, With the provision of the means for taking out and holding the sheet until it is securely sandwiched, it is possible to realize stable carton square tube molding.

According to the carton supply device of the invention according to claim 4 of the present invention, it is possible to cope with a change in the square size of the carton to be supplied by replacing the holding claw which is a means for holding the diagonal of the carton. be able to.

According to the carton supply device of the invention according to claim 5 of the present invention, when the holding claw, which is a means for holding the diagonal of the carton, is formed into a rectangular tube while holding the diagonal of the carton, As a part of the guide for inserting the carton into the carton holding mandrel for forming the carton bottom, the carton can be reliably inserted into the mandrel.

Further, the above-mentioned claims 1 to 5 of the present invention.
According to the carton supply device of the invention according to the present invention, not only as a carton supply device in a liquid filling and packaging machine into a rectangular cylindrical carton container for liquid packaging, but also as a carton supply device in another rectangular cylindrical carton processing device. Of course, it can be used and developed.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a carton supply device according to the present invention.

2A is an example of the start of carton molding by a carton supply device, FIG. 2B is an example of a carton molding process by a carton supply device, FIG. 2C is an example of a carton molding process by a carton supply device, and FIG. The top view which shows an example at the time of the completion of carton molding by a carton supply apparatus, respectively.

FIG. 3 is a plan view showing a conventional general carton supply device and its operation.

[Explanation of symbols]

M: Carton magazine L: Parallel link moving mechanism 1: Carton 1a: Diagonal 2: Adsorption head 3: Adsorption pad 4: Air cylinder 5, 6, Holding claw 7: Drive rotary shaft
Reference numeral 8: drive rotary shaft 9, 10: non-rotating link arm 11: connecting link arm 12: support shaft 13: main link arm 14: swing bracket 1
5 suction head support part 20 carton removal molding means 31 holding frame 32 removal port

Claims (5)

[Claims] 1. A take-out mechanism for taking out flat cartons one by one in parallel with a carton take-out surface from a take-out port 32 of a carton magazine M for accommodating and storing flat carton 1; A pair of holding claws 5 and 6 facing the outside of the outlet for holding the diagonal of the carton; the pair of holding claws 5 and 6 interlockingly move while facing each other in a direction corresponding to the diagonal of the carton; A carton feeder, which comprises a carton take-out / molding means 20 for forming the carton into a rectangular tube while maintaining the diagonal of the carton continuously. 2. A carton magazine, in which flat cartons are stacked and housed, is parallel to a carton unloading surface from an outlet of the carton magazine.
Carton ejection forming means for forming a rectangular tube while maintaining the diagonal of the flat carton to be taken out part by part, wherein the carton ejection molding means is parallelly opposed to the carton ejection surface around the support shaft. A parallel link moving mechanism that moves the link from the side to the vertical outer side, and a pair of holding claws that hold the diagonal of the carton until it is formed into a rectangular tube while holding the diagonal of the flat carton. Characterized carton feeder. 3. A carton magazine, in which flat cartons are stacked and housed, is parallel to a carton unloading surface from an outlet of the carton magazine.
Carton ejection forming means for forming a rectangular tube while maintaining the diagonal of the flat carton to be taken out part by part, wherein the carton ejection molding means is parallelly opposed to the carton ejection surface around the support shaft. A parallel link moving mechanism that moves the link from the side to the vertical outer side, and a pair of holding claws that hold the diagonal of the carton until it is formed into a rectangular cylindrical shape while holding the diagonal of the flat carton, Of the pair of holding claws, one holding claw is provided integrally with the parallel link moving mechanism, and the other holding claw is formed integrally with a bracket that follows the parallel link moving mechanism and rotates about a spindle. Carton supply device characterized by being provided. 4. The carton supply device according to claim 1, wherein the holding claw for holding the diagonal of the carton is exchanged so as to be able to cope with a change in the size of the carton. Carton supply device characterized by the above-mentioned. 5. The carton supply device according to claim 1, wherein the holding claw for holding the carton diagonal is formed into a rectangular tube shape while holding the flat carton diagonal. A carton feeder, characterized in that the carton feeder is used as a part of a guide for inserting a later rectangular tubular carton into a mandrel for holding and forming a carton bottom.