JP7327812B2 - Wrap-around cartoner and method - Google Patents

Description

The present invention relates to wraparound cartoners and methods.

With the wrap-around cartoner, the product is placed on the bottom plate of the flat blank sheet at the carton making position, and the surrounding side plates adjacent to the bottom plate of the blank sheet are raised and glued. It has the function of making a carton around the product. In addition, the wrap-around cartoner has a function of pushing a blank sheet, which has been flattened out on a conveying line, to a carton-making position while the claw member is in contact with the outer peripheral edge of the side plate portion, and conveying the blank sheet to a carton-making position. The pawl member moves forward with respect to the closed box, contacts the raised side plate portion, and further advances as it is, thereby conveying the box and carrying it out from the box-making position. A device of this type is disclosed, for example, in US Pat.

Japanese Patent Publication No. 7-88074

In the above-described wrap-around cartoner, for example, when adhesive adhesion failure occurs, the raised side plate portion that could not be adhered collapses and opens. When the pawl member moves forward while the side plate portion facing the upstream side has fallen, it pushes the tip of the side plate portion that has fallen and is parallel to the conveying surface. Then, combined with the fact that the product is placed on the bottom plate, it is not possible to move the blank sheet together with the product. , There is a risk that the product will fall over because the surroundings are open.

Therefore, in order to prevent the occurrence of such a situation, it is necessary to temporarily stop the operation of the wrap-around cartoner and manually remove the blank sheets with poor adhesion at the carton making position and the products placed on them. diminished sexuality.

The above-described problems are described as independent ones, and the present invention does not necessarily have to be able to solve all of the described problems, and it is sufficient if at least one of the problems can be solved. In addition, we intend to obtain the right for the configuration to solve this problem by filing a divisional application or making an amendment.

In order to solve the above-described problems, the wrap-around cartoner of the present invention is characterized by: (1) a conveying means having a claw member that pushes the unfolded blank sheet while being in contact with the outer peripheral edge thereof; a product supplying means for supplying products onto the blank sheets waiting at the box-making position; and a case means, wherein the conveying means intermittently operates the claw members to supply the blank sheet to the box making position, and the case making means moves the temporarily stopped claw members to the side plates. When the box is formed, it moves forward toward the side plate within a range of distance corresponding to the height of the side plate and waits, and moves further forward when the box is formed. The body is carried out from the carton-making position.

The blank sheet supplied to the conveying device is conveyed to a box-making position while being pushed by intermittently operating claw members. At the box-making position, when the product is supplied onto the blank sheet and the side plate portion is raised, the claw members are advanced within a distance range corresponding to the height of the side plate portion to approach the side plate. As a result, even if the side plate portion is opened due to poor adhesion, for example, and it is about to fall down, the claw member can support the product, and the product can be carried out from the box-making position as it is. Therefore, defective products can be carried out without stopping the apparatus.

(2) It is preferable that the claw members stand by in a non-contact state with the side plate portion. In this way, since the moving distance from the stop position of the pawl members that have supplied the unfolded blank sheets to the box-making position is shortened, the moving distance of the pawl members positioned in front of and behind the pawl members at the box-making position is also reduced. similarly shortened. Therefore, it is possible to prevent the side plate portion from collapsing while suppressing the influence on the object conveyed by the other claw members as much as possible.

(3) The conveying means carries out the box at the carton-making position with the claw members, and conveys the box containing the products to a sorting position where the boxes are sorted into a path for good products and a path for defective products. and configure it to pause at that position,
It is preferable that the non-defective products are carried out from the transport line of the transport means at the sorting position, and the defective products are transported as they are by the claw members. With this configuration, the box body carried out from the box making position can be moved to the sorting position as it is with a simple structure. In addition, even if there is a risk of the side plate portion falling down due to poor adhesion or the like, it can be carried out as it is by means of the claw members.

(4) In the method of the present invention, the claw members of the conveying means are in contact with the outer periphery of the unfolded blank sheet, and the blank sheet is pushed to a box-making position, and the claw members are temporarily stopped, and the blank sheet is temporarily stopped at the box-making position. A product is supplied onto the blank sheet waiting at the box making position, and the side plate part of the peripheral edge of the blank sheet waiting at the box making position is raised and glued to form a box, and the side plate part When the claw member advances toward the side plate portion and stands by within the range of the distance corresponding to the height of the side plate portion in the raised state, and the box body is formed, the claw member Further, it moves forward to carry out the box body from the box-making position.

According to the present invention, it is possible to discharge the defective product without stopping the machine even when the adhesion failure of the glue occurs, so that the productivity is not lowered.

1 is a front view of a preferred embodiment of a wraparound cartoner according to the present invention; FIG. It is the top view. It is the perspective view. It is a front view explaining an effect|action. It is a top view explaining an effect|action. It is a partially enlarged view for explaining the action.

Preferred embodiments of the present invention will now be described in detail with reference to the drawings. It should be noted that the present invention is not to be construed as being limited to this, and various changes, modifications, and improvements can be made based on the knowledge of those skilled in the art without departing from the scope of the present invention.

As shown in FIGS. 1 to 3, the wraparound cartoner 10 includes a conveying device 12 that conveys the unfolded blank sheets 11 and the like, and is installed upstream of the conveying device 12 to stack the unfolded blank sheets 11 . a stocker 13 that stores the blank sheets 11 in the state of storage, a sheet transfer device 14 that takes out the blank sheets 11 stored in the stocker 13 and sets them at the carry-in position of the conveying device 12, and a box making station on the conveying line of the conveying device 12 temporarily. At the product supply device 16 that supplies the product 15 onto the stopped blank sheet 11, the box making device 19 installed at the box making station, and the carry-out station provided downstream of the carton making station of the conveying device 12, A carry-out device 18 and the like are provided for pushing out the boxed non-defective products to a carry-out conveyor 17 on the side of the conveying device 12 .

The blank sheet 11 of the present embodiment is for forming a tray-shaped box body 20 that opens upward, and as shown in FIG. A first side plate portion 11b connected to the front and rear sides in the conveying direction, a second side plate portion 11c connected to the left and right sides in the conveying direction of the conveying device 12 of the bottom plate portion 11a, and the left and right sides of the first side plate portion 11b. It has a margin piece portion 11d connected to both ends, and each portion is cut out from one sheet of paperboard.

The stocker 13 stores the unfolded blank sheets 11 in an upright state, stacking them forward and backward, and enables them to be taken out one by one from the top. The sheet transfer device 14 has a suction portion 21 at the tip of an arm member 24 that receives power from a driving means and moves along a predetermined locus. The arm member 24 transitions between a first position in which the suction surface at the tip of the suction portion 21 faces the opening of the stocker 13 for taking out the blank sheets 11 and a second position in which the transfer surface of the transfer device 12 faces. to work. The suction unit 21 is located at the first position and suctions the leading blank sheet 11 of the stocker 13 while being in contact with the blank sheet 11 to hold the blank sheet 11 by suction. Next, when the suction unit 21 reaches the second position by the operation of the arm member 24 while holding one blank sheet 11 by suction, the blank sheet 11 is brought into close proximity to or in contact with the conveying surface of the conveying device 12, and is in that state. When the suction of the suction unit 21 is stopped at , the unfolded blank sheet 11 is supplied onto the conveying device 12 .

The conveying device 12 has claw members 25 attached at a predetermined pitch to the outer peripheral surfaces of a pair of left and right endless belts 23 stretched over pulleys 22 arranged in the forward and rearward directions in the conveying direction. The claw members 25 attached to the endless belts 23 are arranged at the same pitch in the front-rear direction so that they are adjacent to each other in the left and right direction. The blank sheet 11 is conveyed by the forward movement of the pawl member 25 which comes into contact with the tip of the portion 11b and which accompanies the rotation of the endless belt 23 .

A driving force of a drive motor 28 is transmitted to a rotating shaft 26 of a pulley 22 arranged forward in the conveying direction through a power transmission system 27 having a drive belt 27a and a pulley 27b. For example, as the drive motor 28 rotates, the endless belt 23 and thus the claw members 25 move forward, and when the drive motor 28 stops, the claw members 25 also stop. Therefore, by controlling the rotation of the drive motor 28, the claw member 25 can be intermittently moved forward to convey the blank sheet 11 to a predetermined position and then temporarily stop.

Although not shown, a strip-shaped guide plate portion forming a conveying surface is arranged between the pair of left and right endless belts 23 and in the area outside the endless belts 23 . As a result, the blank sheet 11 is supported over a wide range by the guide plate portion, and is stably moved by receiving the conveying force from the claw member 25 .

The product 15 to be boxed in this embodiment is composed of a group of articles in which box-like articles 29 are erected and arranged in a line. A transport line (not shown) for the product 15 is formed on one of the left and right sides of the transport device 12, and the product 15 is transported on the transport line at a predetermined interval and waits at the carry-out position. This unloading position is set right beside the box making station in the transport device 12 .

The product supply device 16 includes a pusher mechanism (not shown) that pushes the product 15 waiting at the carry-out position of the carrier line toward the carrier device 12, and a pair of side members provided at the carry-in portion of the box making station of the carrier device 12. A guide 30 and the like are provided. The pair of side guides 30 are composed of plate-shaped members that are arranged with a predetermined distance in the front-rear direction along the transport direction of the transport device 12 . The predetermined distance is the width of the product 15 pushed by the pusher mechanism, that is, the distance corresponding to the front-rear length of the product 15 conveyed by the conveying device 12 . The product 15 on the transfer line is pushed out by the pusher mechanism and transferred to a box making station of the transfer device 12 . Therefore, in accordance with the operation timing of the conveying device 12, when the unfolded blank sheet 11 is waiting at the box making station, the product 15 is pushed out by the pusher mechanism so that the product 15 is placed on the bottom plate portion 11a of the blank sheet 11. , the product 15 is located.

The box-making device 19 includes a folding plate member 32 arranged to be able to move up and down below the conveying surface of the conveying device 12, and a paste injection device (not shown) that applies glue to the paste margin piece portion 11d. The bent plate member 32 has its upper end located below the conveying surface during standby, and moves upward during operation so that its upper end is located above the conveying surface. The folding plate members 32 contact the four sides of the bottom plate portion 11a of the unfolded blank sheet 11 waiting on the box-making station, and fold the first side plate portion 11b and the second side plate portion 11c. Launch. Further, the box-making device 19 bends the paste margin piece portion 11d to which glue is applied by the glue injection device from the boundary portion with the first side plate portion 11b, and sticks the paste margin piece portion 11d and the second side plate portion 11c. Equipped with a function to adhere and fix together. As a result, the first side plate portion 11b and the second side plate portion 11c are raised to form the box 20 in which the side plate portions are adhered and fixed to each other while surrounding the product 15 . The height of the first side plate portion 11b and the second side plate portion 11c in the standing state is lower than the height of the product 15, and the product 15 protrudes above the box-shaped box 20.例文帳に追加

The box-manufactured box 20 is conveyed by the claw member 25 of the conveying device 12, reaches the next sorting station, and is temporarily stopped there. That is, the pawl member 25 temporarily stopped at the position of the box making station moves forward with the rotational motion of the endless belt 23, contacts the raised first side plate portion 11b on the rear side in the conveying direction, and conveys for a predetermined distance. do. After that, when the pawl member 25 is temporarily stopped, the box 20 is temporarily stopped and waits at the sorting station.

The quality of the boxes 20 in which the products 15 are accommodated is determined by an inspection device arranged at a predetermined position in the section from the box-making station to the sorting station. This inspection device is based on, for example, images taken by an inspection camera. to detect.

In the case of non-defective products, the carry-out device 18 is activated, and the boxes 20 containing the products 15 waiting at the sorting station are laterally pushed out and transferred onto the carry-out conveyor 17 on the side of the transfer device 12.例文帳に追加After that, the box 20 is conveyed to the next process system by the unloading conveyor 17 .

On the other hand, in the case of a defective product, the unloading device 18 does not operate, and the claw member 25 of the transporting device 12 that moves at the timing when the box body 20 on the next box making station is transferred to the sorting station moves downstream on the transporting device 12. transported to the side and ejected.

Here, in the present embodiment, when the first side plate portion 11b of the blank sheet 11 waiting at the box making station is raised by the box making device 19, the endless belt 23 is rotated by a predetermined amount, and as shown in FIGS. , the claw member 25 is moved slightly forward from the position indicated by the solid line to the position indicated by the two-dot chain line, and controlled so that the claw member 25 waits in that state/position.

As a result, even if the first side plate portion 11b opens and falls due to, for example, poor bonding between the second side plate portion 11c and the paste margin piece portion 11d, the first side plate portion 11b hits the claw member 25 and does not fall any further. . 6, the distance between the claw member 25 and the peripheral edge of the bottom plate portion 11a when the unfolded blank sheet 11 is supplied to the box making station is equal to the height of the first side plate portion 11b. Therefore, when the claw member 25 falls down, it may be opened to a horizontal state. However, in this embodiment, the above-described forward movement shortens the distance between the claw member 25 and the peripheral edge of the bottom plate portion 11a, thereby reducing the distance between the two. is shorter than the height of the first side plate portion 11b, for example, as shown in FIG. This prevents the first side plate portion 11b from opening and falling down. When the claw member 25 is stopped at the position indicated by the solid line, the first side plate portion 11b falls greatly as shown in FIG. 6(a), and may even become horizontal. If the claw member 25 moves forward while it is in a greatly fallen state as shown in the figure, the first side plate portion 11b is bent and the box body 20 cannot move forward smoothly.

Then, when the claw member 25 moves forward after that, the claw member 25 raises the first side plate portion 11b, and the first side plate portion 11b and the claw member 25 come into surface contact, and the box body is kept in the shape of the box. 20 can be carried.

Therefore, even if an adhesion failure or the like occurs, the box body 20 can be carried out from the box making station without temporarily stopping the apparatus. Since there is no pause in this way, there is no decrease in productivity.

In the present embodiment, the defective product is moved downstream along the conveying device 12. Therefore, even if there is a failure in gluing, the first side plate portion 11b does not open, and the product is pushed out by the claw members 25 as it is. It's good because you can.

Further, in the above-described embodiment, the claw member 25 slightly moves forward at the box making station and waits at a position a predetermined distance away from the upright first side plate portion 11b, that is, the peripheral edge of the bottom plate portion 11a. If it is configured to move forward by a distance corresponding to the height of the first side plate portion 11b and wait until the box making operation is completed in a state of contact with the first side plate portion 11b, the first side plate portion 11b may be damaged due to, for example, poor gluing. This is good because it can prevent the face plate portion 11b from opening. However, for the following reason, it is better to keep some distance and wait as in this embodiment.

That is, the claw member 25 positioned immediately before the box-making station and the claw member 25 positioned immediately before the sorting station are both connected to the same endless belt 23 and move and stop together. Therefore, for example, when a certain claw member 25 conveys the unfolded blank sheet 11 to the box making station, the box body 20 that was at the box making station at the same timing is conveyed to the sorting station by the claw member 25 one before. be done. Next, at the box-making station, the product 15 is supplied onto the unfolded blank sheet 11, and at the sorting station, the lateral delivery of non-defective products is started. Then, after the supply work of the product 15 is completed, the first side plate portion 11b and the like are bent and raised, and the gluing process and the like are performed. At an appropriate timing after the first side plate portion 11b is raised, the claw member 25 is slightly moved forward. When the claw members 25 positioned at the box making station are moved forward a little in this manner, the claw members 25 at the sorting station side are also moved forward by the same distance integrally therewith. The timing at which the claw members 25 on the sorting station side move forward in this way may be the timing at which the non-defective box 20 is sent out to the carry-out conveyor 17 side, and the portion of the box 20 remaining on the sorting station may be the timing. If the claw member 25 hits the , the position of the claw member 25 is shifted to the side, and there is a possibility that the carry-out device 18 cannot carry out to an appropriate position.

Therefore, as in the present embodiment, if the claw member 25 is held in such a manner that it protrudes slightly forward, the side slippage at the time of unloading at the sorting station is reduced, and unloading by the unloading device 18 can be performed. It is preferable to suppress the amount of movement within a range that can prevent the first side plate portion 11b from falling down.

In addition, the operation timing of each device is adjusted, and after the non-defective box 20 at the sorting station is pushed out from the front of the claw member 25, the claw member 25 is advanced to raise the first side plate portion. 11b may be in contact with or close to. However, in this case, if it becomes necessary to wait for the boxes to be unloaded at the sorting station, there is a risk that productivity will decrease.

Further, for example, a transport device for moving the unfolded blank sheets 11 to the box-making station and a transport device for moving the box-manufactured boxes to the sorting station are configured separately, and the respective movement timings are set independently. You can also do it by However, according to this embodiment, the configuration and control may be simple.

In the above-described embodiment, the box 20 has a shallow tray shape that is lower than the height of the product 15, but the present invention is not limited to this. Various configurations can be used, such as having a suitable height, or providing a lid flap to close the upper part of the product.

Various aspects of the present invention have been described above using embodiments and modifications, but these embodiments and descriptions are not intended to limit the scope of the present invention, but to aid in understanding the present invention. Please note that it is provided for your convenience. The scope of the invention is not limited to the constructions or methods of manufacture explicitly described herein, but rather includes within its scope combinations of the various aspects of the invention disclosed herein. While the claimed features of the invention are identified in the appended claims, any configuration not presently specified in the claims is disclosed herein. For the sake of clarity, it is possible that such a configuration may be claimed in the future.

10: Wrap-around cartoner 11: Blank sheet 11a: Bottom plate portion 11b: First side plate portion 11c: Second side plate portion 11d: Margin strip portion 12: Conveyor 15: Product 16: Product supply device 17: Carry-out conveyor 18 : Unloading device 19 : Box making device 20 : Box 25 : Claw member

Claims (4)

a conveying means comprising a pawl member that pushes the unfolded blank sheet while being in contact with the outer peripheral edge of the blank sheet;
a product supply means for supplying a product onto the blank sheet which is transported to the box making position by the transport means and stands by;
box-making means for forming a box body by raising the peripheral side plate portions of the blank sheets waiting at the box-making position and performing a gluing process;
with
The conveying means intermittently operates the claw members to supply the blank sheet to the box-making position, and moves the temporarily stopped claw members to the position where the side plate portion is raised by the box-making means. It is moved forward toward the side plate portion within a range of distance corresponding to the height of the side plate portion and waits, and when the box body is formed, it is further moved forward to move the box body from the box making position. A wrap-around cartoner designed to be carried out. 2. A wrap-around cartoner according to claim 1, wherein said pawl member stands by in a non-contact state with said side plate portion. The conveying means carries out the box at the box-making position by means of the claw member, conveys the box containing the product to a sorting position for sorting the product into a path for good products and a path for defective products. Make it pause at the position,
3. The wrap-around cartoner according to claim 1, wherein the non-defective products are carried out from the transport line of the transport means at the sorting position, and the defective products are transported as they are by the claw members. While the claw member of the conveying means is in contact with the outer peripheral edge of the unfolded blank sheet, it is conveyed to the box-making position, and the claw member is temporarily stopped,
supplying a product onto the blank sheet waiting at the box-making position;
A box is formed by raising the side plate portion of the peripheral edge of the blank sheet waiting at the box-making position and performing a gluing process,
With the side plate portion raised, the claw member advances toward the side plate portion within a distance range corresponding to the height of the side plate portion and stands by;
A method in which the claw members are further moved forward when the box is formed, and the box is carried out from the box making position.

Images