A packaging printing mechanism for carton production and use method thereof

Abstract

The present invention discloses a packaging printing mechanism for carton production and a method of using the same, and relates to the technical field of carton printing. In order to solve the problem that most of the existing carton printing relies on a circular printing roller to print on a flat carton, it is necessary to perform multiple multi-sided printing before packaging, resulting in cumbersome printing steps, and the circular printing roller easily makes the non-printed area contact with the carton, resulting in poor printing quality and waste of carton. A central fixed seat is arranged at the center of the annular conveying mechanism, and a loading station is arranged on one side of the annular conveying mechanism; it also includes: a central fixed seat, which is arranged at the center of the annular conveying mechanism, and the central fixed seat is in an I-shape; a first printing table, which is arranged on one side of the central fixed seat, and a second printing table is arranged on the other side of the central fixed seat, a first limit support seat is arranged below the first printing table, and a second limit support seat is arranged below the second printing table.

Description

Technical Field

[0001] The present invention relates to the technical field of carton printing, and in particular to a packaging printing mechanism for carton production and a use method thereof. Background Art

[0002] Carton printing machine is a printing device that can print the required text, patterns and other information on the surface of the carton;

[0003] For example, the Chinese authorized patent with announcement number CN203901931U (carton printing machine): includes a loading mechanism, which transports the carton board to the workbench; a paper feeding mechanism, which is composed of a plurality of chains embedded in the workbench, baffles installed on the chains and sprockets driving the chains to roll; a printing mechanism, which includes a printing roller, an ink distribution roller, and an anilox roller, for printing on the transported carton board; an ink circulation system, which supplies ink in the ink tank to the printing mechanism through a pump for printing; on the workbench, there are installed two left and right guide strips extending along the conveying direction of the carton board, the guide strips are composed of angle irons, and the guide strips are installed on the workbench by matching the downwardly protruding snap-fitting protrusions formed on the angle irons with the snap-fitting holes formed on the workbench.

[0004] Most of the existing carton printing relies on circular printing rollers to print on flat cartons, which requires multiple multi-sided printing before packaging, resulting in cumbersome printing steps. In addition, the circular printing roller easily causes the non-printed area to contact the carton, resulting in poor printing quality and waste of cartons. To this end, we provide a packaging printing mechanism for carton production and a method of using the same. Summary of the invention

[0005] The object of the present invention is to provide a packaging printing mechanism for carton production and a method of using the same, so as to solve the problem raised in the above background technology that most of the existing carton printing relies on a circular printing roller to print on a flat carton, and multiple multi-sided printing is required before packaging, resulting in cumbersome printing steps, and the circular printing roller easily causes the unprinted area to contact the carton, resulting in poor printing quality and waste of cartons.

[0006] To achieve the above object, the present invention provides the following technical solution: a packaging printing mechanism for carton production, comprising an annular conveying mechanism, a central fixing seat is arranged at the center of the annular conveying mechanism, and a loading station is arranged on one side of the annular conveying mechanism;

[0007] Also includes:

[0008] A central fixing seat, which is arranged at the center of the annular conveying mechanism and is in an I-shape;

[0009] A first printing table is arranged on one side of the central fixing seat, a second printing table is arranged on the other side of the central fixing seat, a first position-limiting support seat is arranged below the first printing table, and a second position-limiting support seat is arranged below the second printing table;

[0010] A printing disc, which is arranged on both sides of the first limit support seat and the second limit support seat, the outer wall of the printing disc is provided with printing blades, and the printing blades and the printing disc are an integrated structure, and one printing disc outer wall is provided with three printing blades, and both side surfaces of the printing blades are provided with connecting limit grooves;

[0011] A printing ink rack is arranged on one side of the printing disk, a feed port is arranged on the upper surface of the printing ink rack, and the feed port and the printing ink rack are an integrated structure, a printing cloth groove is arranged inside the printing ink rack, and the printing cloth groove is in the form of a front end opening, and a printing cloth is arranged inside the printing cloth groove.

[0012] Preferably, an AC motor mechanism is provided at the center of the printing fan blade, a fixed top plate is provided at one end of the AC motor mechanism, and the fixed top plate and the AC motor mechanism are an integrated structure, and the fixed top plate is threadedly connected to the printing plate through a single-head fastener.

[0013] Preferably, a motor fixing frame is provided outside the AC motor mechanism, and the motor fixing frame is fixed to the printing ink frame via a mounting frame.

[0014] Preferably, a first downward push rod mechanism is provided at the lower end of the first printing table, a second downward push rod mechanism is provided at the lower end of the second printing table, and two of the first downward push rod mechanism and the second downward push rod mechanism are provided, a first connecting seat is provided at the lower end of the first downward push rod mechanism, a second connecting seat is provided at the lower end of the second downward push rod mechanism, a transverse push rod mechanism is provided inside the first connecting seat and the second connecting seat, and the transverse push rod mechanism is fixed to the first connecting seat and the second connecting seat by external bolts of a second fixing plate.

[0015] Preferably, the lower surfaces of the first downward push rod mechanism and the second downward push rod mechanism are both provided with a fourth fixing plate, and the first downward push rod mechanism and the second downward push rod mechanism are respectively threadedly connected to the first connecting seat and the second connecting seat through external bolts of the fourth fixing plate.

[0016] Preferably, the upper ends of the first downward push rod mechanism and the second downward push rod mechanism are both provided with a screw slide mechanism, and four screw slide mechanisms are respectively located inside the first printing table and the second printing table in a group of two, and the screw slide mechanism is mainly composed of a ball screw, a screw moving seat and a servo motor, and the upper end surfaces of the first downward push rod mechanism and the second downward push rod mechanism are provided with a third fixed plate, and the first downward push rod mechanism and the second downward push rod mechanism are threadedly connected to the screw slide mechanism through external bolts of the third fixed plate.

[0017] Preferably, the lower surfaces of the first printing table and the second printing table are both provided with movable openings, and the two movable openings are respectively integrated with the first printing table and the second printing table, the first downward push rod mechanism and the second downward push rod mechanism move along the movable openings, and the upper surfaces of the first printing table and the second printing table are both provided with maintenance openings, and the interior of the maintenance openings is provided with sealing plates, and the sealing plates are fixed to the first printing table and the second printing table by fixing bolts.

[0018] Preferably, a first limit push rod mechanism is arranged at the center of the first printing table, and a second limit push rod mechanism is arranged at the center of the second printing table. The lower ends of the first limit push rod mechanism and the second limit push rod mechanism are respectively threadedly connected to the first limit support seat and the second limit support seat through the first fixed plate external bolts.

[0019] Preferably, a movable seat is provided at the upper end of the annular conveying mechanism, a placement groove is provided on the upper surface of the movable seat, and a carton is provided inside the placement groove.

[0020] Preferably, a method for using a packaging printing mechanism for carton production comprises the following steps:

[0021] Step 1: Place the unsealed carton with only the opening left in the packaging from the loading station into the placement slot on the upper surface of the moving seat at the upper end of the ring conveying mechanism, start the ring conveying mechanism, the moving seat moves accordingly, and the feeding port is connected to the printing ink feeding mechanism to transport the printing ink into the printing ink rack, and the printed soft board to be printed is placed on the outside of the printing fan blade, and the two ends are fixed in the connection limit slot;

[0022] Step 2: When the movable seat moves to the bottom of the first printing table, it stops moving, and then the first limit push rod mechanism is started, and the first limit support seat moves down to the inside of the carton;

[0023] Step 3: Start the first downward push rod mechanism to drive the first connection seat to move down to the horizontal position where printing is required, then start the horizontal push rod mechanism to drive the printing fan blade to contact the surface of the carton, and then start the AC motor mechanism to drive the printing disc to rotate for printing operation;

[0024] Step 4: After printing, all components return to their positions, and then the circular conveying mechanism is used to move the carton to the bottom of the second printing table. The second limit push rod mechanism, the second downward push rod mechanism, the horizontal push rod mechanism and the AC motor mechanism are started in sequence to print the other two sides of the carton. After printing, the staff can remove the carton that has passed the loading station.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention arranges a first printing station and a second printing station on both sides of a central fixed seat respectively. The first printing station can print both sides of the carton, and the second printing station can print the other two sides of the carton. After the carton is circled by a circular conveying mechanism, the four sides of the carton with only an opening left but no seal can be printed, and there is no need for personnel to manually turn it over. Compared with the existing manual turning over, it reduces manpower and improves convenience. In addition, a printing fan blade is arranged on the outer wall of the printing disk. One printing disk is equipped with three printing fan blades, and three different printed soft boards can be installed at the same time. The existing circular printing roller is replaced by the fan blade. In this way, when printing, the three different printed soft boards can be clearly classified, and the three printed soft boards are equidistantly distributed, which will not cause the phenomenon of misaligned printing and improve the efficiency of one printing. At the same time, the existing circular printing roller easily makes the non-printed area contact with the carton. The printing fan blade form directly removes the non-printed area to reduce the overall area. In this way, it is not easy to cause printing failure due to contact during printing, thereby reducing the waste of cartons.

[0027] 2. The printing plate under the first printing table moves up and down by means of the first downward push rod mechanism, and the printing plate under the second printing table moves up and down by means of the second downward push rod mechanism, and at the same time, it also moves laterally by means of the transverse push rod mechanism, and the first downward push rod mechanism and the second downward push rod mechanism are driven to move laterally by means of the lead screw slide rail mechanism, thereby adjusting the position between the printing plate and the carton. Compared with the existing circular printing roller which is inconvenient to fix in position, the movable printing plate is suitable for printing in different positions, thereby improving flexibility.

[0028] 3. By respectively arranging the first limit push rod mechanism and the second limit push rod mechanism at the center of the first printing table and the second printing table, the first limit support seat and the second limit support seat are respectively fixed at the lower ends of the first limit push rod mechanism and the second limit push rod mechanism, and the first limit support seat and the second limit support seat are inserted through the interior of the carton, thereby filling the interior of the carton, and also supporting the carton board. In this way, there will be no force depression during printing, resulting in unclear printing, thereby improving the success rate of printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a front view structural schematic diagram of the center fixing seat of the present invention;

[0031] Figure 3 It is a schematic diagram of the top view of the structure of the printing disc of the present invention;

[0032] Figure 4 It is a schematic diagram of the internal structure of the printing ink frame of the present invention from a top view;

[0033] Figure 5 It is a schematic diagram of the connection structure between the first printing table and the first downward push rod mechanism of the present invention;

[0034] In the figure: 1, annular conveying mechanism; 2, loading station; 3, fourth fixed plate; 4, moving seat; 5, placing slot; 6, carton; 7, central fixed seat; 8, first printing table; 9, second printing table; 10, first limit push rod mechanism; 11, second limit push rod mechanism; 12, maintenance opening; 13, sealing plate; 14, fixing bolt; 15, first limit support seat; 16, second limit support seat; 17, first fixed plate; 18, first downward push rod mechanism; 19, first connection Seat; 20, second downward push rod mechanism; 21, second connecting seat; 22, horizontal push rod mechanism; 23, AC motor mechanism; 24, motor fixing frame; 25, printing plate; 26, printing ink frame; 27, printing fan blade; 28, connecting limit groove; 29, fixed top plate; 30, single-head fastener; 31, printing cloth; 32, feed port; 33, mounting frame; 34, printing cloth groove; 35, second fixed plate; 36, screw slide rail mechanism; 37, third fixed plate; 38, moving opening. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] See also Figure 1-5 , an embodiment provided by the present invention: a packaging printing mechanism for carton production, comprising a ring conveying mechanism 1, a center fixing seat 7 is arranged at the center of the ring conveying mechanism 1, and a loading station 2 is arranged on one side of the ring conveying mechanism 1;

[0037] Also includes:

[0038] A central fixing seat 7, which is arranged at the center of the annular conveying mechanism 1, and the central fixing seat 7 is in an I-shape;

[0039] A first printing table 8 is arranged on one side of the central fixing seat 7, a second printing table 9 is arranged on the other side of the central fixing seat 7, a first position-limiting support seat 15 is arranged below the first printing table 8, and a second position-limiting support seat 16 is arranged below the second printing table 9;

[0040] The printing disc 25 is arranged on both sides of the first limiting support seat 15 and the second limiting support seat 16. The outer wall of the printing disc 25 is provided with a printing blade 27, and the printing blade 27 and the printing disc 25 are an integrated structure. There are three printing blades 27 on the outer wall of one printing disc 25, and the two side surfaces of the printing blade 27 are provided with connecting limiting grooves 28;

[0041] The printing ink frame 26 is arranged on one side of the printing disk 25. A feed port 32 is arranged on the upper surface of the printing ink frame 26, and the feed port 32 and the printing ink frame 26 are an integrated structure. A printing cloth groove 34 is arranged inside the printing ink frame 26, and the printing cloth groove 34 is a front end opening form, and a printing cloth 31 is arranged inside the printing cloth groove 34.

[0042] See also Figure 2 and Figure 3 An AC motor mechanism 23 is arranged at the center of the printing blade 27, and a fixed top plate 29 is arranged at one end of the AC motor mechanism 23. The fixed top plate 29 and the AC motor mechanism 23 are an integrated structure. The fixed top plate 29 is threadedly connected to the printing plate 25 through a single-head fastener 30, and the printing blade 27 is driven to rotate by the AC motor mechanism 23, thereby performing a printing operation.

[0043] See also Figure 2 A motor fixing frame 24 is provided outside the AC motor mechanism 23 , and the motor fixing frame 24 is fixed to the printing ink frame 26 through a mounting frame 33 to fix the printing ink frame 26 .

[0044] See also Figure 2 A first downward push rod mechanism 18 is provided at the lower end of the first printing table 8, and a second downward push rod mechanism 20 is provided at the lower end of the second printing table 9, and two of the first downward push rod mechanism 18 and the second downward push rod mechanism 20 are provided. A first connecting seat 19 is provided at the lower end of the first downward push rod mechanism 18, and a second connecting seat 21 is provided at the lower end of the second downward push rod mechanism 20. A transverse push rod mechanism 22 is provided inside the first connecting seat 19 and the second connecting seat 21. The transverse push rod mechanism 22 is fixed to the first connecting seat 19 and the second connecting seat 21 by external bolts of the second fixed plate 35, so as to adjust the position between the printing plate 25 and the carton 6. Compared with the existing circular printing roller whose position is inconvenient to fix, the movable printing plate 25 is suitable for printing at different positions, which improves flexibility.

[0045] See also Figure 2 and Figure 5 The lower surfaces of the first downward push rod mechanism 18 and the second downward push rod mechanism 20 are both provided with a fourth fixed plate 3, and the first downward push rod mechanism 18 and the second downward push rod mechanism 20 are respectively threadedly connected with the first connecting seat 19 and the second connecting seat 21 through the external bolts of the fourth fixed plate 3, driving the first connecting seat 19 and the second connecting seat 21 to move up and down for adjusting the up and down positions.

[0046] See also Figure 2 and Figure 5 The upper ends of the first downward push rod mechanism 18 and the second downward push rod mechanism 20 are both provided with a screw slide mechanism 36, and four screw slide mechanisms 36 are respectively located inside the first printing table 8 and the second printing table 9 in a group of two. The screw slide mechanism 36 is mainly composed of a ball screw, a screw moving seat and a servo motor. The upper end surfaces of the first downward push rod mechanism 18 and the second downward push rod mechanism 20 are provided with a third fixed plate 37, and the first downward push rod mechanism 18 and the second downward push rod mechanism 20 are threadedly connected to the screw slide mechanism 36 through external bolts of the third fixed plate 37, so as to realize the lateral movement of the first downward push rod mechanism 18 and the second downward push rod mechanism 20, so that the printing fan 27 can be printed at different positions of the carton 6.

[0047] See also Figure 1 and Figure 5 The lower surfaces of the first printing table 8 and the second printing table 9 are both provided with movable openings 38, and the two movable openings 38 are respectively integrated with the first printing table 8 and the second printing table 9. The first downward push rod mechanism 18 and the second downward push rod mechanism 20 move along the movable openings 38. The upper surfaces of the first printing table 8 and the second printing table 9 are both provided with maintenance openings 12, and the interior of the maintenance openings 12 is provided with sealing plates 13, which are fixed to the first printing table 8 and the second printing table 9 by fixing bolts 14, so as to facilitate the inspection and maintenance of the lead screw guide rail mechanism 36 inside the first printing table 8 and the second printing table 9.

[0048] See also Figure 2 A first limiting push rod mechanism 10 is arranged at the center of the first printing table 8, and a second limiting push rod mechanism 11 is arranged at the center of the second printing table 9. The lower ends of the first limiting push rod mechanism 10 and the second limiting push rod mechanism 11 are threadedly connected with the first limiting support seat 15 and the second limiting support seat 16 through the first fixed plate 17 external bolts respectively. The first limiting support seat 15 and the second limiting support seat 16 are inserted through the interior of the carton 6, thereby filling the interior of the carton 6, and also supporting the box board of the carton 6. In this way, there will be no force depression during printing, resulting in unclear printing, thereby improving the success rate of printing.

[0049] See also Figure 1A moving seat 4 is provided at the upper end of the ring conveying mechanism 1, and a placing groove 5 is provided on the upper surface of the moving seat 4. A carton 6 is provided inside the placing groove 5. The placing groove 5 has a limiting effect on the carton 6 to improve stability, and the carton 6 is driven to move by the movement of the moving seat 4.

[0050] See also Figure 1-5 , a method for using a packaging printing mechanism for carton production, comprising the following steps:

[0051] Step 1: Place the unsealed carton 6 with only the opening left in the packaging from the loading station 2 into the placement groove 5 on the upper surface of the moving seat 4 located at the upper end of the ring conveying mechanism 1, start the ring conveying mechanism 1, the moving seat 4 moves accordingly, and the feed port 32 is connected to the printing ink feed mechanism to feed the printing ink into the printing ink rack 26, and the printed soft board to be printed is placed on the outside of the printing fan blade 27, and the two ends are clamped in the connection limit groove 28 for fixing;

[0052] Step 2: When the movable seat 4 moves to the position directly below the first printing table 8, it stops moving, and then the first limit push rod mechanism 10 is started, and the first limit support seat 15 moves down to the inside of the carton 6;

[0053] Step 3: Start the first downward push rod mechanism 18 to drive the first engagement seat 19 to move downward to the horizontal position where printing is required, then start the transverse push rod mechanism 22 to drive the printing fan blade 27 to contact the surface of the carton 6, and then start the AC motor mechanism 23 to drive the printing disc 25 to rotate for printing operation;

[0054] Step 4: After printing, all components return to their positions, and then the ring conveying mechanism 1 is used to drive the carton 6 to move to the bottom of the second printing table 9, and the second limit push rod mechanism 11, the second downward push rod mechanism 20, the horizontal push rod mechanism 22 and the AC motor mechanism 23 are started in sequence to print the other two sides of the carton 6. After printing, the staff can remove the carton 6 that has passed the loading station 2.

[0055] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A packaging printing mechanism for carton production, comprising an annular conveying mechanism (1), a central fixing seat (7) being arranged at the center of the annular conveying mechanism (1), and a loading station (2) being arranged on one side of the annular conveying mechanism (1); Features: Also includes: A central fixing seat (7), which is arranged at the center of the annular conveying mechanism (1), and the central fixing seat (7) is in an I-shape; A first printing table (8) is arranged on one side of the central fixing seat (7), a second printing table (9) is arranged on the other side of the central fixing seat (7), a first position-limiting support seat (15) is arranged below the first printing table (8), and a second position-limiting support seat (16) is arranged below the second printing table (9); A printing disc (25) is arranged on both sides of the first limiting support seat (15) and the second limiting support seat (16); the outer wall of the printing disc (25) is provided with a printing blade (27); the printing blade (27) and the printing disc (25) are an integral structure; and one printing disc (25) is provided with three printing blades (27) on the outer wall; and both side surfaces of the printing blade (27) are provided with connecting limiting grooves (28); A printing ink frame (26) is arranged on one side of the printing disk (25); a feed port (32) is arranged on the upper surface of the printing ink frame (26); the feed port (32) and the printing ink frame (26) are an integrated structure; a printing cloth groove (34) is arranged inside the printing ink frame (26); the printing cloth groove (34) is in the form of a front end opening; a printing cloth (31) is arranged inside the printing cloth groove (34).

2. A packaging printing mechanism for carton production according to claim 1, characterized in that: An AC motor mechanism (23) is arranged at the center of the printing blade (27), a fixed top plate (29) is arranged at one end of the AC motor mechanism (23), and the fixed top plate (29) and the AC motor mechanism (23) are an integrated structure, and the fixed top plate (29) is threadedly connected to the printing plate (25) via a single-head fastener (30).

3. A packaging printing mechanism for carton production according to claim 2, characterized in that: A motor fixing frame (24) is arranged outside the AC motor mechanism (23), and the motor fixing frame (24) is fixed to the printing ink frame (26) via a mounting frame (33).

4. A packaging printing mechanism for carton production according to claim 3, characterized in that: A first downward push rod mechanism (18) is provided at the lower end of the first printing table (8), and a second downward push rod mechanism (20) is provided at the lower end of the second printing table (9), and both the first downward push rod mechanism (18) and the second downward push rod mechanism (20) are provided in pairs, a first connecting seat (19) is provided at the lower end of the first downward push rod mechanism (18), and a second connecting seat (21) is provided at the lower end of the second downward push rod mechanism (20), and a transverse push rod mechanism (22) is provided inside the first connecting seat (19) and the second connecting seat (21), and the transverse push rod mechanism (22) is fixed to the first connecting seat (19) and the second connecting seat (21) by external bolts of a second fixing plate (35).

5. A packaging printing mechanism for carton production according to claim 4, characterized in that: The lower surfaces of the first downward push rod mechanism (18) and the second downward push rod mechanism (20) are both provided with a fourth fixing plate (3), and the first downward push rod mechanism (18) and the second downward push rod mechanism (20) are respectively threadedly connected to the first connecting seat (19) and the second connecting seat (21) via external bolts of the fourth fixing plate (3).

6. A packaging printing mechanism for carton production according to claim 5, characterized in that: The upper ends of the first downward push rod mechanism (18) and the second downward push rod mechanism (20) are both provided with a screw guide rail mechanism (36), and four screw guide rail mechanisms (36) are respectively located inside the first printing table (8) and the second printing table (9) in a group of two. The screw guide rail mechanism (36) is mainly composed of a ball screw, a screw moving seat and a servo motor. The upper end surfaces of the first downward push rod mechanism (18) and the second downward push rod mechanism (20) are provided with a third fixed plate (37), and the first downward push rod mechanism (18) and the second downward push rod mechanism (20) are threadedly connected to the screw guide rail mechanism (36) through external bolts of the third fixed plate (37).

7. A packaging printing mechanism for carton production according to claim 6, characterized in that: The lower surfaces of the first printing table (8) and the second printing table (9) are both provided with movable openings (38), and the two movable openings (38) are respectively integrated with the first printing table (8) and the second printing table (9); the first downward push rod mechanism (18) and the second downward push rod mechanism (20) move along the movable openings (38); the upper surfaces of the first printing table (8) and the second printing table (9) are both provided with maintenance openings (12); the interior of the maintenance openings (12) is provided with sealing plates (13); the sealing plates (13) are fixed to the first printing table (8) and the second printing table (9) by fixing bolts (14).

8. A packaging printing mechanism for carton production according to claim 7, characterized in that: A first position limiting push rod mechanism (10) is arranged at the center of the first printing table (8), and a second position limiting push rod mechanism (11) is arranged at the center of the second printing table (9). The lower ends of the first position limiting push rod mechanism (10) and the second position limiting push rod mechanism (11) are respectively threadedly connected to the first position limiting support seat (15) and the second position limiting support seat (16) through external bolts of a first fixing plate (17).

9. A packaging printing mechanism for carton production according to claim 8, characterized in that: A movable seat (4) is arranged at the upper end of the annular conveying mechanism (1), a placement groove (5) is arranged on the upper surface of the movable seat (4), and a carton (6) is arranged inside the placement groove (5).

10. A method for using a packaging printing mechanism for carton production, implemented based on the packaging printing mechanism for carton production according to claim 9, characterized in that: The following steps are involved: Step 1: Place the unsealed carton (6) with only the opening left from the packaging from the loading station (2) into the placement groove (5) on the upper surface of the movable seat (4) located at the upper end of the circular conveying mechanism (1), start the circular conveying mechanism (1), the movable seat (4) moves accordingly, and the feed port (32) is connected to the printing ink feed mechanism to feed printing ink into the printing ink rack (26), and the printed soft board to be printed is placed on the outside of the printing fan blade (27), and the two ends are clamped in the connection limit groove (28) to be fixed; Step 2: When the movable seat (4) moves to the position directly below the first printing table (8), the movable seat (4) stops moving, and then the first limit push rod mechanism (10) is started, and the first limit support seat (15) moves down to the inside of the carton (6); Step 3: Start the first downward push rod mechanism (18) to drive the first connection seat (19) to move downward to the horizontal position where printing is required, then start the transverse push rod mechanism (22) to drive the printing fan blade (27) to contact the surface of the carton (6), and then start the AC motor mechanism (23) to drive the printing disc (25) to rotate to perform the printing operation; Step 4: After printing, all components return to their positions, and then the circular conveying mechanism (1) is used to drive the carton (6) to move to the bottom of the second printing table (9), and the second limit push rod mechanism (11), the second downward push rod mechanism (20), the horizontal push rod mechanism (22) and the AC motor mechanism (23) are started in sequence to print the other two sides of the carton (6). After printing is completed, the staff can remove the carton (6) that has passed the loading station (2).

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