JP2018131245A - Carton printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carton printer which can transfer a printing portion of a carton to a portion for print processing of the printer even if various cartons of which dimensions and figures differ mutually.CONSTITUTION: A carton printer comprises carton transfer equipment 12 which transfers folded cartons, carton supplying equipment 11 which supplies the cartons to the carton transfer equipment, and a carton printer 13 which performs print processing to the cartons which is transferred by the carton transfer equipment and is in a temporary stop state. The carton transfer equipment is capable of changing a gap between a backward guide member 31 and a forward guide member 32 which are arranged back and forth by a double loop type. A first and a second float preventing guide portions 31b, 32b which protrude toward the other respectively is provided above the backward and forward guide members. After supplying the carton by expanding the gap of the front and back guide members, the carton is cramped by narrowing the gap so that both float preventing guide portions inhibit that front and back edges of the carton float. The transfer equipment moves at a state of cramping even if high speed transfer is done, and temporarily stops at a print position.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a carton printing apparatus, and more particularly to an apparatus that performs a printing process on a folded carton.

  As an apparatus for performing a printing process on a folded carton, for example, there is a stamping apparatus disclosed in Patent Document 1. This device sandwiches and transports the folded carton between a plurality of rollers arranged above and below, and passes product information such as a barcode on the surface of the carton by passing it through the marking part where the marking roller is arranged. Like to do.

Japanese Patent No. 3422718

  For example, in the case of ethical drugs, each product is stored in addition to individual products in order to prevent medical accidents due to mistakes and to ensure traceability by recording the flow from manufacturing / distribution to patient use. Bar codes are also required for packaging boxes.

  There are a wide variety of packaging boxes to be used, and the folded carton has a wide variety of dimensional shapes and bar code printing positions. For this reason, the printing apparatus disclosed in Patent Document 1 may not be able to properly convey and supply the barcode printing position in a wide variety of cartons to the printing unit.

  In addition, in the GS1 data bar, which has been put into practical use as a next-generation barcode standard, for example, attribute information such as a product expiration date, a production lot, and a manufacturing date is embedded. Since it is necessary to print the GS1 data bar, it is necessary to respond quickly to a large variety of small lots, which cannot be handled by the stamping apparatus of Patent Document 1.

  Many types of cartons, for example, have different thicknesses and weights. For example, when the cartons are pushed by fingers or transported by a belt conveyor, the transporting posture of the carton is lost or misaligned, especially when transported at high speed. As a result, the carton positioning work in the stamping apparatus becomes complicated.

  In order to solve the above-described problems, a carton printing apparatus according to the present invention includes (1) a carton transport device that transports a folded carton, a carton supply device that supplies the carton to the carton transport device, and the carton transport. A printing device that performs printing processing on the carton that is transported by the device and is temporarily stopped, and the carton transporting device includes a rear guide member that is located behind the supplied carton, and a front of the carton. A front guide member positioned, and the rear guide member and the front guide member are respectively attached to a first annular body and a second annular body that rotate independently of each other. The rear guide member is configured to move along the direction of conveyance of the carton as it rotates, and the rear guide member projects forward to the upper side thereof. The front guide member has a second anti-floating guide portion protruding rearward on the upper side thereof, and the supply of the carton in the carton supply device is performed between the rear guide member and the front guide member. The first gap prevention guide portion is formed with a gap between the rear guide member and the front guide member being narrowed so as to sandwich the front and rear ends of the carton and above the front and rear ends of the carton. And the second float prevention guide portion is positioned, and is provided with positioning means for regulating the position of the carton in a direction orthogonal to the transport direction of the carton.

  In the present invention, the carton is supplied in a state where the distance between the rear guide member and the front guide member is widened. That is, the front guide member and the rear guide member each include a first float prevention guide portion and a second float prevention guide portion that protrude toward the other side, so that at least the first float prevention guide portion and the second float prevention guide portion are provided. By making the distance between the front guide member and the rear guide member wide so that the distance between the guide portions is equal to or longer than the length of the carton, for example, when the carton is supplied from the upper side in the carton supply device, it is smooth. Can be done.

  And if a carton is supplied, a back guide member and a front guide member will move forward and backward relatively, the space | interval of both will be narrowed, and a carton will be inserted | pinched from front and back. By this pinching, the front and rear ends of the carton come under the second floating prevention guide portion and the first floating prevention guide portion, and the front and rear ends are restrained from being greatly lifted upward.

  Next, by moving the front guide member and the rear guide member at the same speed, the carton is conveyed while maintaining the state in which the carton is sandwiched from the front and rear. At this time, as described above, since the lifting of the front and rear ends of the carton is suppressed by the second lifting prevention guide portion and the first lifting prevention guide portion, respectively, for example, any carton having a different thickness or weight Even if transported at high speed, the carton can be moved in the sandwiched state without the front end or rear end separating.

  When the rear guide member and the front guide member sandwiching the carton reach a desired position, the carton is temporarily stopped. This desired position is the front-rear position along the carton transport direction in the carton transport device, and the position where the sandwiched carton print position coincides with the print processing position in the print device (the transport direction of the carton transport device). is there. Thereby, positioning in the front-rear direction is performed. As described above, if the front guide member and the rear guide member are sandwiched after the carton is supplied, the transporting posture of the carton will not be lost. There is no need to re-align the direction.

  Furthermore, since the first annular body and the second annular body rotate independently, the distance between the rear guide member and the front guide member can be arbitrarily changed and adjusted by appropriately rotating the both. Therefore, even in a wide variety of cartons having different dimensional shapes, the front and back can be sandwiched between the front guide member and the rear guide member, and any of the various cartons can be positioned in the front-rear direction in relation to the printing apparatus. Can be set.

  Further, the position adjustment in the direction orthogonal to the transport direction is performed by using positioning means. Thereby, the front-back direction along a conveyance direction and the horizontal direction orthogonal to it can be positioned, and it can print appropriately with respect to the printing location of various cartons.

  (2) The positioning means may include a pusher member that urges the carton in a direction orthogonal to the transport direction. In this case, by pushing the carton with the pusher member, the carton is moved in the direction orthogonal to the transport direction, and the carton printing position is positioned at the printing position in the printing apparatus, so that positioning can be performed easily and reliably.

  (3) It is good to comprise so that the process which urges | biases the said carton which the said pusher member performs may be performed in the state which the said back guide member and the said front guide member pinched | interposed the said carton. If it does in this way, when it is urged | biased by a pusher member and a carton moves, the said carton may move straight, without tilting.

  (4) The first annular body and the second annular body may be endless belts. If it does in this way, since the 1st annular body and the 2nd annular body will become the conveyance surface of a carton, and the conveyance surface itself moves, it is simple and can convey a carton smoothly.

  In the present invention, even in a wide variety of cartons having different dimensional shapes, the printing process can be performed by matching the printing position of the carton with the printing position of the printing apparatus.

1 is a perspective view showing a preferred embodiment of a carton printer according to the present invention. It is the front view. FIG. It is AA arrow sectional drawing in FIG. FIG. 3 is a cross-sectional view taken along line B-B in FIG. 2. It is CC sectional view taken on the line in FIG. It is a schematic perspective view explaining operation | movement. It is a figure explaining a back guide member, a front guide member, and a carton supply process. It is a perspective view which shows a printing apparatus part. (A) is a front view which shows a printing apparatus part, (b) is the side view.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the present invention is not construed as being limited thereto, 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.

  Each drawing shows a preferred embodiment of a carton printer according to the present invention. The carton printing apparatus 10 according to the present embodiment includes a hopper type carton supply device 11, a carton transport device 12, a printing device 13, a print inspection device 14, a defective product discharge device 15, and a non-defective product transport device 16. .

  The hopper type carton supply device 11 takes out one by one from the top of a hopper part 21 that stores a carton 1 folded in a sheet shape in a standing state and a plurality of cartons 1 stored in the hopper part 21. A carton take-out device 22 that supplies the carton conveying device 12 to the carton. The hopper portion 21 is disposed above the front side of the carton transport device 12, and the bottom surface is inclined downward toward the carton transport device 12 side.

  The carton removing device 22 includes a robot arm 23 and a suction head 24 attached to the tip of the robot arm 23. The robot arm 23 is between a first posture in a state of standing on the near side of the carton transport device 12 and a second posture lying in a state parallel to the transport surface of the carton transport device 12 above the carton transport device 12. In order to change alternately, forward and reverse rotation is performed in an angle range of 90 degrees (see FIG. 7 etc.). The suction head 24 includes a base plate 24a extending along the transport direction of the carton transport device 12, a plurality of connection plates 24c attached to one surface of the base plate 24a so as to be movable along the transport direction, and the connection plate 24c. The attached suction nozzle 24b is provided. The connecting plates 24c and the suction nozzles 24b are integrally movable in the transport direction so that the arrangement interval can be adjusted according to the dimensional shape of the carton 1. The connecting plate 24c is attached so as to extend in a direction intersecting the base plate 24a, and the suction nozzle 24b is attached to be movable with respect to the connecting plate 24c along the extending direction. When the robot arm 23 is in the first posture, one surface of the base plate 24a faces the hopper portion 21 side, and the suction nozzle 24b contacts and holds the surface of the carton 1 located at the head of the hopper portion 21. . When the robot arm 23 rotates and reaches the second posture while maintaining the attracted state, the attracted and held carton 1 is positioned on the transport surface of the carton transport device 12. Therefore, when the suction of the suction head 24 is released in this state, the carton 1 is separated from the suction nozzle 24b and transferred onto the carton transport device 12. For convenience of illustration, in each drawing excluding FIG. 7, the carton takeout device 22 shows only the state of the first posture, and in FIG. 7, the suction head 24 faces the hopper portion 21 based on the first posture, The state which supplies the carton 1 based on a 2nd attitude | position to the carton conveying apparatus 12 is shown.

  The carton conveying device 12 is a double loop type conveyor, and includes three endless belts that constitute a conveying surface. The three endless belts are timing belts, which are the first endless belt 25 and the second endless belts 26 disposed on the left and right sides of the first endless belt 25, respectively. The endless belts 26 are independently driven to rotate. The first endless belt 25 is stretched between a first drive pulley 27 and a first driven pulley 28 arranged at the front and rear, and is driven to rotate along with the first drive pulley 27 that rotates in response to the output of the first drive motor. . The pair of left and right second endless belts 26 is spanned between a second drive pulley 29 and a second driven pulley 30 disposed in the front and rear, and is accompanied by a second drive pulley 29 that rotates in response to the output of the second drive motor. Rotating drive. The pair of left and right second endless belts 26 move together. Further, in the present embodiment, both the first endless belt 25 and the second endless belt 26 are timing belts, and each pulley is also a stepped pulley. Therefore, when the first drive pulley 27 rotates forward and backward, the first endless belt 25 follows the second belt. One endless belt 25 also rotates forward and backward. When the second drive pulley 29 rotates forward and backward, the second endless belt 26 also rotates forward and backward following that. In the present embodiment, as will be described later, the first endless belt 25 is intermittently driven in the forward direction without rotating in the reverse direction, and the second endless belt 26 is rotated in the forward and reverse directions and intermittently driven.

  A plurality of rear guide members 31 located on the rear side in the transport direction of the carton 1 are attached to the first endless belt 25. Specifically, the elongated rear guide member 31 is disposed on the first endless belt 25 and the second endless belt 26 so as to intersect the conveyance direction, and at the longitudinal center portion of the rear guide member 31. Then, it is fixed using a fixing tool such as a bolt and nut. Therefore, the rear guide member 31 moves forward with the forward rotation of the first endless belt 25.

  The rear guide member 31 has a substantially L-shaped vertical cross section, an elongated rectangular first crosspiece 31a, and a first float prevention guide portion that is positioned above the first crosspiece 31a and protrudes forward. 31b (see FIG. 8). The first crosspiece 31a and the first floating prevention guide 31b may be configured as separate members or the same member.

  A plurality of front guide members 32 positioned on the front side in the transport direction of the carton 1 are attached to the second endless belt 26. Specifically, the elongated front guide member 32 is disposed on the first endless belt 25 and the second endless belt 26 so as to intersect the conveyance direction, and at the left and right end portions of the front guide member 32 in the longitudinal direction. Then, it is fixed using a fixing tool such as a bolt and nut. Therefore, the front guide member 32 moves forward and backward as the second endless belt 26 rotates forward and backward.

  The front guide member 32 has a substantially L-shaped vertical cross section, an elongated rectangular second crosspiece 32a, and a second floating prevention guide portion that is located above the second crosspiece 32a and protrudes rearward. 32b (see FIG. 8). The second crosspiece 32a and the second floating prevention guide 32b may be formed of separate members or the same member.

  Thereby, for example, when the first drive pulley 27 and the second drive pulley 29 are synchronously rotated in the forward direction at the same speed, the rear guide member 31 and the front guide member 32 are in a state of maintaining a relative positional relationship, that is, both Move forward while maintaining the distance between them. Further, when the relative rotational speed of the first drive pulley 27 and the second drive pulley 29 is changed, the rear guide member 31 and the front guide member 32 move while the distance between the rear guide member 31 and the front guide member 32 changes. Furthermore, since the first drive pulley 27 and the second drive pulley 29 rotate independently, various operations such as temporarily stopping one and rotating only the other can be performed.

  By appropriately operating the first drive pulley 27 and the second drive pulley 29, the interval between the rear guide member 31 and the front guide member 32 can be set to an arbitrary distance. Therefore, even if the dimensional shape of the folded carton 1 is diverse, the carton 1 can be sandwiched and positioned from the front and rear by the rear guide member 31 and the front guide member 32 by adjusting the distance. That is, the front-rear position along the transport direction of the carton 1 in the carton transport device 12 can be positioned at an arbitrary position by appropriately setting the positions where the rear guide member 31 and the front guide member 32 are temporarily stopped. .

  In this embodiment, the carton take-out device 22 supplies the folded carton 1 between the rear guide member 31 and the front guide member 32, and the carton transport device 12 includes the rear guide member 31 and the front guide member that form a pair. The carton 1 is transported in a state of being positioned between the two. More specifically, the rear guide member 31 is temporarily stopped at the carton supply position to the carton conveying device 12, and the front guide member 32 moves forward in this state, and the first guide member 31 is lifted first. The interval between the prevention guide portion 31b and the second floating prevention guide portion 32b of the front guide member 32 is made wider than the longitudinal length of the carton 1 (see FIG. 8). In this state, the carton take-out device 22 supplies the carton 1 onto the first endless belt 25 and the second endless belt 26 that constitute the transport surface of the carton transport device 12.

  When the carton 1 is supplied onto the carton conveying device 12, the front guide member 32 moves backward, and the first beam portion 31a of the rear guide member 31 and the second beam portion 32a of the front guide member 32 are moved. The distance between them is made equal to the longitudinal length of carton 1. Thereby, the front side in the conveyance direction of the carton 1 is urged rearward by the second crosspiece 32a of the front guide member 32, and the rear side of the carton 1 moves so as to enter under the first floating prevention guide part 31b. The front and rear ends of the carton 1 are sandwiched between the first crosspiece 31a of the rear guide member 31 and the second crosspiece 32a of the front guide member 32, and positioning on the carton transport device 12 is performed. At this time, the first anti-floating guide portion 31b and the second anti-floating guide portion 32b are located above the front and rear ends of the carton 1. Therefore, the upward movement / lifting of the carton 1 is suppressed.

  In this state, the rear guide member 31 and the front guide member 32 move forward at the same speed together with the first endless belt 25 and the second endless belt 26, and the carton 1 is conveyed directly below the print head 40 of the printing device 13. Pause. During this forward movement, the carton 1 is supported by the first endless belt 25 and the second endless belt 26 from below, and the front and rear are held by the rear guide member 31 and the front guide member 32. , It is transported in a stable posture without causing misalignment. In addition, since the first lifting prevention guide portion 31b and the second lifting prevention guide portion 32b prevent the carton 1 from being lifted upwardly at the front and rear ends, the carton 1 has various thicknesses and weights, so that it floats or bends during conveyance. Even if it is going to be done, it can convey, suppressing the front-and-rear end of the carton 1, and high-speed conveyance is attained. Then, in the temporarily stopped state, control is performed so that the print location 2 of the carton 1 is coincident with the print head 40 in the printing device 13 in the transport direction of the carton transport device 12.

  On the other hand, the positioning of the print location 2 of the carton 1 in the direction orthogonal to the transport direction of the carton transport device 12 is performed by a positioning pusher device 35 disposed on the back side of the carton transport device 12. The positioning pusher device 35 includes a plurality of pusher members 36 and a drive device 37 that reciprocates the pusher members 36 along a direction orthogonal to the transport direction of the carton transport device 12. One end of each of the plurality of pusher members 36 is attached to the plate 38 and reciprocates as a unit. The plate 38 is attached to the tip of a rod 37 a that reciprocates by a drive device 37. The drive device 37 is constituted by, for example, a cylinder. The pusher member 36 receives the drive of the drive device 37, and moves between a first position where the pusher member 36 moves backward and waits, and a second position where the pusher member 36 approaches the second endless belt 26 on the back side of the carton transport device 12 from the first position. Reciprocates between them. When the pusher member 36 is in the first position, the other end of the pusher member 36 is not in contact with the carton 1 on the carton conveying device 12. In the middle of the movement of the pusher member 36 from the first position toward the second position, the other end of the pusher member 36 contacts the carton 1, and the direction in which the carton 1 is orthogonal to the transport direction of the carton transport device 12. To move in that direction. When the pusher member 36 reaches the second position, the printing location 2 of the carton 1 is located immediately below the print head 40 in the printing device 13, and positioning in the direction orthogonal to the conveying direction of the carton conveying device 12 is performed. Complete.

  In the present embodiment, when the carton 1 is pushed out by the pusher member 36 described above, since the rear guide member 31 and the front guide member 32 hold the state in which the carton 1 is sandwiched from the front and rear when the carton 1 is conveyed, the carton 1 Are guided by the rear guide member 31 and the front guide member 32, are urged by the pusher member 36 without being inclined, and move in a direction orthogonal to the transport direction in the carton transport device 12.

  As described above, the pusher member 36 is moved to the second position in a state where the rear guide member 31 and the front guide member 32 are temporarily stopped at the desired positions, so that the print location 2 of the carton 1 is printed on the print device 13. The head 40 can be positioned. Then, by adjusting the temporary stop position and the stop position of the second position, it is possible to easily and quickly set the printing device 13 for the carton 1 having different dimensional shapes and printing locations 2.

  The printing device 13 is an ink jet or laser type printer, and prints information such as the expiration date, lot number, and GS1 data bar of the product stored in the carton 1. The printing device 13 can be moved by a moving mechanism 42 in a direction perpendicular to the carton conveying direction. By rotating the handle 42a of the moving mechanism 42 forward and backward, the printing apparatus 13 reciprocates. The position of the print head 40 of the printing device 13 along the carton transport direction is fixed, and the position of the print head 40 in the direction orthogonal to the carton transport direction is adjusted to a desired position by operating the handle. It has become. By adjusting the handle operation, the print location 2 of the carton 1 when the pusher member 36 reaches the second position faces the print head 40. The print head 40 includes a holding plate member 40a that moves up and down. Prior to performing the printing process, the holding plate member 40a descends to lightly hold the carton 1 from above and prevent it from rising.

  The print inspection device 14 inspects whether or not correct information is printed at the print location 2 of the carton 1. That is, the print inspecting device 14 includes a camera 41, images the area including the print location 2 with the camera 41, performs predetermined image recognition processing on the captured image data, and detects the contents in the print. For example, when printing is not performed, some characters are missing, or incorrect information is printed, the print inspection device 14 outputs a defective product detection signal.

  The defective product discharge device 15 discharges the carton 1 determined to be defective product detection by the print inspection device 14, and includes an air jet ejection device (not shown) disposed on the front side of the carton conveying device 12, A chute conveyor 39 that guides the carton 1 discharged by the air jetted from the air jet jetting device to the front side of the carton transporting device 12 is provided. The defective carton 1 guided and discharged by the chute conveyor 39 is stored in a collection box 45 installed below the carton conveying device 12.

  The non-defective product transfer device 16 is a belt conveyor device. The non-defective product transfer device 16 is disposed on the downstream side of the carton transfer device 12, and the transfer direction intersects the orthogonal direction with respect to the transfer direction of the carton transfer device 12. The non-defective product transporting device 16 transports intermittently and receives the carton 1 unloaded from the carton transporting device 12 so as to partially overlap, and transports the carton 1 in a sashimi shape (see FIG. 7).

  In the above-described embodiment, the rear guide member 31 and the front guide member 32 are brought into contact with the front and rear sides of the carton 1 when the carton 1 is transported. Therefore, positioning in the front-rear direction along the transport direction is performed by a temporary stop. It is not always necessary to sandwich the carton 1 between the rear guide member 31 and the front guide member 32 at the time of conveyance and thus at the time of supplying the carton, and the distance between the rear guide member 31 and the front guide member 32 is wider than the longitudinal length of the carton 1 during the conveyance. It may be in a state. In such a case, when the position of the rear guide member 31 temporarily stopped near the printing device 13 is in contact with the rear side of the carton 1 in contact with the rear guide member 31, the printing location 2 of the carton 1 is printed on the printing device 13. Control is performed so that the head 40 coincides with the transport direction of the carton transport device 12. Then, the front guide member 32 is moved backward at a predetermined timing so that the distance between the rear guide member 31 and the front guide member 32 is equal to the length of the front and rear length of the carton 1 and positioning in the front and rear direction is performed.

  In the embodiment described above, the positioning of the carton 1 in the front-rear direction is such that the front guide member 32 moves relatively backward with respect to the rear guide member 31 and the carton 1 is sandwiched between the rear guide member 31 and the front guide member 32. However, the present invention is not limited to this, and the rear guide member 31 may be moved backward and forward while the front guide member 32 is temporarily stopped, and the front guide member 32 may be used as a reference.

  In the above-described embodiment, the drive device 37 for reciprocating the pusher member 36 is configured by a cylinder, the reciprocating distance thereof is constant, and the position of the print head 40 of the printing device 13 is orthogonal to the transport direction. However, the present invention is not limited to this. For example, the drive device 37 uses a device that can variably adjust the moving distance of the rod 37a, and can move the carton in the conveyance direction and the direction orthogonal thereto. The printing head 40 of the printing device 13 on the secondary plane may be fixed.

  In the above-described embodiment, both the first annular body and the second annular body are configured using the endless belt, and the annular body itself is a transport surface that moves, and has a function of transporting the carton. For example, an endless chain may be used. In that case, the member which comprises the conveyance surface of cartons, such as a fixed plate, is provided, and the back guide member located in back conveys a carton ahead. However, the endless belt as in the embodiment body is simple because the structure is simple and the carton can be smoothly conveyed.

  As described above, various aspects of the present invention have been described using the embodiments and the modifications. However, these embodiments and descriptions are not intended to limit the scope of the present invention, and are for understanding the present invention. It is added that it was provided to contribute. The scope of the present invention is not limited to the configurations and manufacturing methods explicitly described in the specification, and includes combinations of various aspects of the present invention disclosed in the present specification. Among the present inventions, the configuration for which a patent is sought is specified in the appended claims, but the present invention is disclosed in this specification even if the configuration is not specified in the claims. I would like to remind you that there is a possibility of claiming this configuration in the future.

DESCRIPTION OF SYMBOLS 1 Carton 2 Printing location 10 Carton printing apparatus 11 Hopper type carton supply apparatus 12 Carton conveyance apparatus 13 Printing apparatus 25 First endless belt (first annular body)
26 Second endless belt (second annular body)
31 Rear guide member 31b First floating prevention guide portion 32 Front guide member 32b Second floating prevention guide portion 35 Positioning pusher device 36 Pusher member 40 Print head

Claims (4)

A carton transport device for transporting the folded carton;
A carton supply device for supplying the carton to the carton conveying device;
A printing device that performs a printing process on the carton that is conveyed by the carton conveying device and is temporarily stopped;
The carton conveying device has a rear guide member located behind the supplied carton, and a front guide member located in front of the carton,
The rear guide member and the front guide member are attached to a first annular body and a second annular body that rotate independently of each other, and in the conveyance direction of the carton as the first annular body and the second annular body rotate. Configured to move along,
The rear guide member has a first floating prevention guide portion protruding forward on the upper side thereof,
The front guide member has a second anti-floating guide portion protruding rearward on the upper side thereof,
Supply of the carton in the carton supply device is performed in a state where the interval between the rear guide member and the front guide member is widened,
The distance between the rear guide member and the front guide member is narrowed so that the front and rear ends of the carton are sandwiched, and the first float prevention guide portion and the second float prevention guide portion are positioned above the front and rear ends of the carton. To be transported in a state
A carton printing apparatus comprising positioning means for restricting the position of the carton in a direction orthogonal to the transport direction of the carton.   The carton printing apparatus according to claim 1, wherein the positioning unit includes a pusher member that biases the carton in a direction orthogonal to the transport direction.   The carton printing according to claim 2, wherein the process of urging the carton performed by the pusher member is performed in a state where the rear guide member and the front guide member sandwich the carton. apparatus.   The carton printer according to any one of claims 1 to 3, wherein the first annular body and the second annular body are endless belts.

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