Conveying device for printing processing of paper packaging boxes

Abstract

The invention discloses a conveying device for printing processing of paper packaging boxes, and relates to the technical field of packaging box processing, the conveying device comprises a supporting seat, a printing roller, a plurality of first conveying rollers and a conveying belt are mounted on the supporting seat, the first conveying rollers are symmetrically arranged about the printing roller, and the conveying belt is mounted on the supporting seat; the number of the conveying belts is two, and the conveying belts are symmetrically arranged relative to the printing roller. A second conveying roller is arranged under the printing roller, and the second conveying roller and the first conveying roller are the same in structure. The distance between the top end of the second conveying roller and the bottom end of the printing roller is smaller than that between the top end of the first conveying roller and the bottom end of the printing roller. A sliding block is rotationally installed on the second conveying roller and is in elastic sliding connection with the supporting base in the vertical direction. The supporting base is provided with a start-stop unit, and the start-stop unit drives the printing roller to start working after the second conveying roller moves downwards. Patterns printed on the paperboard of the packaging box can be kept at the same position.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging box processing, and specifically relates to a conveying device for paper packaging box printing and processing. Background Art

[0002] The existing conveying work during the printing of paper packaging boxes is carried out through the combination of a conveyor belt, conveying rollers, and printing rollers. As shown in the attached Figure 1 When the bottom end of the printing roller is less than the thickness of the cardboard due to printing requirements, when the cardboard of the packaging box moves in the direction of v1 and its left end contacts the bottom end of the printing roller, the printing roller will apply a downward pressure on the cardboard of the packaging box, which will hinder the leftward movement of the cardboard of the packaging box. The cardboard of the packaging box will have a tendency of short-term stagnation, and this tendency will change due to the magnitude of the frictional force received by the cardboard of the packaging box and is not easy to control. At this time, the rotation of the printing roller is not affected, and the printing roller will rotate normally in the direction of v2, which will cause the printing area z on the printing roller to contact the cardboard of the packaging box in advance, and the printed pattern on the cardboard of the packaging box will be offset, and the product consistency is not easy to control. Summary of the Invention

[0003] The purpose of the present invention is to provide a conveying device for paper packaging box printing and processing to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A conveying device for paper packaging box printing and processing, including a support base, on which a printing roller, a first conveying roller, and a conveyor belt are installed. The first conveying rollers are arranged in multiple numbers symmetrically about the printing roller, and the conveyor belts are arranged in two numbers symmetrically about the printing roller. A second conveying roller is provided directly below the printing roller, and the second conveying roller has the same structure as the first conveying roller. The distance between the top end of the second conveying roller and the bottom end of the printing roller is less than the distance between the top end of the first conveying roller and the bottom end of the printing roller. A slider is rotatably installed on the second conveying roller, and the slider is elastically slidably connected to the support base in the vertical direction. The support base is provided with a start-stop unit, and the start-stop unit drives the printing roller to start working after the second conveying roller moves downward. A driving unit is provided inside the support base for driving the first conveying roller, the second conveying roller, and the printing roller to convey the cardboard of the packaging box at the same speed.

[0005] As a further solution of the present invention, the driving unit includes a first sprocket and a driving head; the first sprocket is fixedly installed on the rotating shaft of the printing roller, and the first sprocket is connected to a second sprocket through a first chain; a first gear is fixedly connected to the rotating shaft of the second sprocket, the first gear meshes with a second gear, a third sprocket is fixedly connected to the rotating shaft of the second gear, and both the second sprocket and the third sprocket are rotatably connected to the support base; fourth sprockets are fixedly connected to the rotating shafts of the first conveying roller and the second conveying roller, and the third sprocket and the fourth sprocket are connected through a second chain; the driving head is used to drive the printing roller to rotate.

[0006] As a further solution of the present invention, the driving head includes a magnetic coupling and a motor; both ends of the magnetic coupling are respectively connected to the printing roller and the motor; the motor is installed on the support base.

[0007] As a further solution of the present invention, the start-stop unit includes a locking disk, and the locking disk is fixedly installed on the rotating shaft of the printing roller; a positioning block is fixedly installed on the locking disk; a limiting rod is slidably connected to the support base in the vertical direction, and the limiting rod can limit the positioning block; the limiting rod is rotatably connected to the second conveying roller.

[0008] As a further solution of the present invention, a rotating groove is opened on the locking disk, and the positioning block can slide in the rotating groove; the positioning block is kept relatively fixed to the locking disk through a locking member.

[0009] As a further solution of the present invention, the locking member includes a bolt and a nut; the bolt is fixedly connected to the locking disk; the nut is arranged outside the positioning block; after the nut is tightened, the positioning block is relatively fixed to the locking disk.

[0010] As a further solution of the present invention, a mounting plate is fixedly connected to the support base, and a plurality of correction blocks arranged at equal intervals are rotatably connected to the mounting plate; a sliding column is fixedly connected to the side wall of the correction block, and a sliding groove is opened on the side wall of the correction block; the sliding column can be slidably matched with the sliding groove on the adjacent correction block.

[0011] As a further solution of the present invention, two symmetrically arranged guide rods are arranged above the conveyor belt.

[0012] Compared with the prior art, the beneficial effects of the present invention are: BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a side view of a conveying device for paper packaging box printing and processing in the prior art; Figure 2 It is a structural schematic diagram of the conveying device for paper packaging box printing and processing of the present invention; Figure 3Schematic cross-sectional view of the conveying device of the present invention; Figure 4 Schematic structural view of the driving unit of the present invention; Figure 5 Schematic structural view of the start-stop unit of the present invention; Figure 6 Schematic view of a partial structure of the present invention; Figure 7 Schematic structural view of the correction block of the present invention; Figure 8 Schematic working principle diagram of the present invention.

[0013] The reference signs are as follows: 1 - support base, 2 - printing roller, 3 - first conveying roller, 4 - conveyor belt, 5 - first sprocket, 6 - second sprocket, 7 - first chain, 8 - first gear, 9 - second gear, 10 - third sprocket, 11 - fourth sprocket, 12 - second chain, 13 - locking disc, 14 - positioning block, 15 - limiting rod, 16 - rotating groove, 17 - bolt, 18 - nut, 19 - magnetic coupling, 20 - motor, 21 - mounting plate, 22 - correction block, 23 - sliding column, 24 - sliding groove, 25 - guiding rod, 26 - slider, 27 - second conveying roller. Detailed implementation manners

[0014] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0015] Please refer to Figures 2 - 8 , where x in the drawings represents the cardboard of the packaging box. The present invention provides a technical solution: a conveying device for the printing and processing of paper packaging boxes, including a support base 1, on which a printing roller 2, a first conveying roller 3, and a conveyor belt 4 are installed. The first conveying rollers 3 are arranged in a plurality of symmetrically arranged with respect to the printing roller 2, and the conveyor belts 4 are arranged in two symmetrically arranged with respect to the printing roller 2; a second conveying roller 27 is arranged directly below the printing roller 2, and the second conveying roller 27 has the same structure as the first conveying roller 3; the distance between the top end of the second conveying roller 27 and the bottom end of the printing roller 2 is less than the distance between the top end of the first conveying roller 3 and the bottom end of the printing roller 2; a slider 26 is rotatably installed on the second conveying roller 27, and the slider 26 is elastically slidably connected to the support base 1 in the vertical direction; the support base 1 is provided with a start-stop unit, and the start-stop unit drives the printing roller 2 to start working after the second conveying roller 27 moves downward; a driving unit for driving the first conveying roller 3, the second conveying roller 27, and the printing roller 2 to convey the cardboard of the packaging box at the same speed is arranged inside the support base 1.

[0016] Refer toFigures 2 - 3 When the left conveyor belt 4 conveys the packaging box cardboard from right to left, the conveyor belt 4 applies a leftward thrust to the packaging box cardboard; when the left end of the packaging box cardboard contacts the conveying roller 27, since the height of the printing roller 2 remains unchanged, under the action of the printing roller 2 and the squeezing action and the thrust applied by the conveyor belt 4, the packaging box cardboard will squeeze the conveying roller 27 downward, and the conveying roller 27 drives the slider 26 to move downward, and when the left end of the packaging box cardboard contacts the bottom end of the printing roller 2, the conveying roller 27 moves downward to the lowest point. At this time, the conveying roller 27 moves downward to the same height as the conveying roller 1 3, and the start-stop unit cancels the limit on the printing roller 2, and the printing roller 2 starts to rotate; at this time, the left end of the packaging box cardboard has abutted against the bottom end of the printing roller 2, which can avoid the printing roller 2 hindering the movement of the packaging box cardboard at the moment the left end of the packaging box cardboard contacts the printing roller 2; while the printing roller 2 rotates The driving unit can drive the conveying roller 1 3 and the conveying roller 2 27 to rotate synchronously, and the linear speeds of the printing roller 2, the conveying roller 1 3 and the conveying roller 2 27 at the tangent position to the packaging box cardboard are equal, which can prevent the packaging box cardboard from slipping and deflecting during the conveying process, and the spring used for resetting the slider 26 and the conveying roller 2 27 can apply an upward pre-tightening force to the packaging box cardboard through the conveying roller 2 27, and the printing roller 2 can cooperate with the conveying roller 2 27 to stably clamp the packaging box cardboard, and the packaging box cardboard can be stably conveyed to the left side, so that the pattern on the printing roller 2 can be better printed on the packaging box cardboard; when the printing roller 2 rotates one circle to complete a printing job, the start-stop unit can stop the printing roller 2 at the same position, and each time the left end of the packaging box cardboard moves to contact the bottom end of the printing roller 2, the printing roller 2 works immediately, and the printed pattern on the packaging box cardboard can maintain the same position.

[0017] Specifically, Figure 4 As shown, the driving unit includes a first sprocket 5 and a driving head; the first sprocket 5 is fixedly mounted on the rotating shaft of the printing roller 2, and the first sprocket 5 is connected to the second sprocket 6 through a first chain 7; a first gear 8 is fixedly connected to the rotating shaft of the second sprocket 6, the first gear 8 is meshed with a second gear 9, a third sprocket 10 is fixedly connected to the rotating shaft of the second gear 9, and the second sprocket 6 and the third sprocket 10 are both rotatably connected to the support seat 1; a fourth sprocket 11 is fixedly connected to the rotating shafts of the conveying roller 1 3 and the conveying roller 2 27, and the third sprocket 10 and the fourth sprocket 11 are connected through a second chain 12; the driving head is used to drive the printing roller 2 to rotate.

[0018] After the start-stop unit cancels the limit on the printing roller 2, the drive head drives the printing roller 2 to rotate. The printing roller 2 drives the first sprocket 5 to rotate. The first sprocket 5 drives the second sprocket 6 to rotate synchronously through the first chain 7. The second sprocket 6 drives the third sprocket 10 to rotate synchronously through the first gear 8 and the second gear 9. The third sprocket 10 drives a plurality of fourth sprockets 11 to rotate synchronously through the second chain 12. After the second conveying roller 27 moves downward to the lowest point, the second chain 12 is in a taut state. A plurality of fourth sprockets 11 drive the first conveying roller 3 and the second conveying roller 27 to rotate synchronously. The rotation directions of the first conveying roller 3 and the second conveying roller 27 are opposite to the rotation direction of the printing roller 2. By setting the transmission ratios of the first sprocket 5, the second sprocket 6, the first gear 8, the second gear 9, the third sprocket 10 and the fourth sprocket 11, the linear velocities of the tangential positions of the printing roller 2, the first conveying roller 3 and the second conveying roller 27 with the packaging box cardboard can be made the same, and the conveying speed of the packaging box cardboard can be kept stable, which can avoid slipping and offset of the packaging box cardboard during the conveying process.

[0019] Specifically, as Figure 2 and Figure 4 shown, the drive head includes a magnetic coupling 19 and a motor 20. The two ends of the magnetic coupling are respectively connected to the printing roller 2 and the motor 20. The motor 20 is installed on the support base 1.

[0020] When the motor 20 works, it can drive the printing roller 2 to rotate through the magnetic coupling 19. When the start-stop unit limits the printing roller 2 and the printing roller 2 remains stationary, the motor 20 can drive the end of the magnetic coupling connected to the motor 20 to rotate normally. When the start-stop unit cancels the limit on the printing roller 2, the end of the magnetic coupling connected to the motor 20 can immediately drive the end of the magnetic coupling connected to the printing roller 2 to start rotating through magnetic force, and the printing and conveying process of the packaging box cardboard can be continuous.

[0021] Specifically, as Figure 4 and Figure 5 shown, the start-stop unit includes a locking disc 13. The locking disc 13 is fixedly installed on the rotating shaft of the printing roller 2. A positioning block 14 is fixedly installed on the locking disc 13. The support base 1 is slidably connected with a limiting rod 15 in the vertical direction. The limiting rod 15 can limit the positioning block 14. The limiting rod 15 is rotationally connected to the second conveying roller 27.

[0022] When the second conveying roller 27 moves downward, it can drive the limiting rod 15 to move downward synchronously. However, after the second conveying roller 27 moves downward to the lowest point, the limiting rod 15 moves downward to a position where the positioning block 14 is no longer limited, and then the driving head can drive the printing roller 2 to rotate. It should be noted that since the printing roller 2 usually only needs to print the cardboard of the packaging box once, in order to avoid secondary printing of the printing roller 2, in actual setting, the outer circumferential circumference of the printing roller 2 is longer than the length of the cardboard of the packaging box. Therefore, before the printing roller 2 rotates one circle, the right end of the cardboard of the packaging box will definitely be separated from the second conveying roller 27, and the second conveying roller 27, the slider 26, and the limiting rod 15 move upward to the initial position under the elastic force of the spring; as Figure 5 shown, the limiting rod 15 moves upward to a position where it can limit the positioning block 14 again, and after the printing roller 2 rotates one circle, it can stop stably at the same position.

[0023] Specifically, as Figure 5 shown, a rotating groove 16 is formed on the locking disk 13, and the positioning block 14 can slide within the rotating groove 16; the positioning block 14 is relatively fixed to the locking disk 13 through a locking member.

[0024] When the locking member cancels the fixation between the positioning block 14 and the locking disk 13, by rotating the locking disk 13, the position of the printing area on the printing roller 2 can be adjusted, so that the contact position between the printing area and the cardboard of the packaging box can be adjusted; after the adjustment is completed, the positioning block 14 and the locking disk 13 are relatively fixed again through the locking member; through the setting of the locking disk 13 and the locking member, the printing position can be conveniently adjusted.

[0025] Specifically, as Figure 5 shown, the locking member includes a bolt 17 and a nut 18; the bolt 17 is fixedly connected to the locking disk 13; the nut 18 is arranged outside the positioning block 14; after the nut 18 is tightened, the positioning block 14 is relatively fixed to the locking disk.

[0026] Specifically, as Figures 6 - 8 shown, a mounting plate 21 is fixedly connected to the support base 1, and a plurality of correction blocks 22 arranged at equal intervals are rotatably connected to the mounting plate 21; a torsion spring for resetting the correction blocks 22 is installed on the mounting plate 21; a sliding column 23 is fixedly connected to the side wall of the correction block 22, and a sliding groove 24 is formed on the side wall of the correction block 22; the sliding column 23 can be slidably matched with the sliding groove 24 on the adjacent correction block 22; two guide rods 25 arranged symmetrically are provided above the conveyor belt 4.

[0027] When the cardboard of the packaging box abuts against one of the correction blocks 22 in an inclined posture, since two adjacent correction blocks 22 are connected by sliding columns 23 and sliding grooves 24, the correction block 22 will stop rotating after rotating a certain angle, and it is difficult to drive the adjacent correction block 22 to rotate. Therefore, only when the left end of the cardboard of the packaging box abuts against all the correction blocks 22 at the same time, can the cardboard of the packaging box easily drive the correction block 22 to rotate to the position as shown in Figure 8 . After the correction block 22 rotates, it can play a guiding role for the cardboard of the packaging box, and the cardboard of the packaging box can move more easily between the second conveying roller 27 and the printing roller 2; at the same time, printing can be performed; at the same time, through the arrangement of the guiding rod 25, when the cardboard of the packaging box is conveyed to the left, the guiding rod 25 can adjust the position of the cardboard of the packaging box so that the left end of the cardboard of the packaging box is parallel to the axis of the second conveying roller 27, and the cardboard of the packaging box can more easily push the correction block 22 to rotate to the left.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A conveying device for the printing and processing of paper packaging boxes, comprising a support base (1), on which a printing roller (2), a first conveying roller (3) and a conveyor belt (4) are installed. The first conveying rollers (3) are arranged in a plurality of symmetrically arranged ones with respect to the printing roller (2), and the conveyor belts (4) are arranged in two symmetrically arranged ones with respect to the printing roller (2); characterized in that: A second conveying roller (27) is arranged directly below the printing roller (2), and the second conveying roller (27) has the same structure as the first conveying roller (3); the distance between the top of the second conveying roller (27) and the bottom of the printing roller (2) is smaller than the distance between the top of the first conveying roller (3) and the bottom of the printing roller (2); a slider (26) is rotatably mounted on the second conveying roller (27), and the slider (26) is elastically slidably connected to the support seat (1) in the vertical direction; the support seat (1) is provided with a start-stop unit, and the start-stop unit drives the printing roller (2) to start working after the second conveying roller (27) moves downward; and a driving unit for driving the first conveying roller (3), the second conveying roller (27) and the printing roller (2) to convey the packaging box cardboard at the same speed is arranged on the inner side of the support seat (1).

2. The conveying device for paper packaging box printing and processing according to claim 1, characterized in that: The driving unit comprises a first sprocket (5) and a driving head; the first sprocket (5) is fixedly mounted on the rotating shaft of the printing roller (2), and the first sprocket (5) is connected to the second sprocket (6) by means of a first chain (7); a first gear (8) is fixedly connected to the rotating shaft of the second sprocket (6), the first gear (8) is meshed with a second gear (9), a third sprocket (10) is fixedly connected to the rotating shaft of the second gear (9), and the second sprocket (6) and the third sprocket (10) are both connected to the support seat (1) in rotation; a fourth sprocket (11) is fixedly connected to the rotating shafts of the conveying roller 1 (3) and the conveying roller 2 (27), and the third sprocket (10) and the fourth sprocket (11) are connected in rotation by means of a second chain (12); the driving head is used for driving the printing roller (2) to rotate.

3. The conveying device for paper packaging box printing and processing according to claim 2, wherein: The driving head comprises a magnetic coupling (19) and a motor (20); two ends of the magnetic coupling are respectively connected to the printing roller (2) and the motor (20); and the motor (20) is mounted on the support seat (1).

4. A conveying device for paper packaging box printing and processing according to claim 1, characterized in that: The start-stop unit comprises a locking plate (13); the locking plate (13) is fixedly mounted on the rotating shaft of the printing roller (2); a positioning block (14) is fixedly mounted on the locking plate (13); the support seat (1) is slidably connected to a limiting rod (15) in the vertical direction, and the limiting rod (15) can limit the positioning block (14); the limiting rod (15) is rotatably connected to the second conveying roller (27).

5. The conveying device for paper packaging box printing and processing according to claim 4, wherein: The locking plate (13) is provided with a rotation groove (16), and the positioning block (14) is able to slide in the rotation groove (16); the positioning block (14) is relatively fixed to the locking plate (13) via a locking member.

6. The conveying device for paper packaging box printing and processing according to claim 5, characterized in that: The locking member comprises a bolt (17) and a nut (18); the bolt (17) is fixedly connected to the locking plate (13); the nut (18) is arranged outside the positioning block (14); and after the nut (18) is tightened, the positioning block (14) and the locking plate (13) are relatively fixed.

7. The conveying device for paper packaging box printing and processing according to claim 4, characterized in that: An installation plate (21) is fixedly connected to the support base (1), and a plurality of correction blocks (22) arranged at equal intervals are rotatably connected to the installation plate (21); a sliding column (23) is fixedly connected to the side wall of the correction block (22), and a sliding groove (24) is formed in the side wall of the correction block (22); the sliding column (23) can be slidably matched with the sliding groove (24) on the adjacent correction block (22).

8. A conveying device for printing and processing of paper packaging boxes according to claim 1, characterized in that: Two guiding rods (25) arranged symmetrically are provided above the conveyor belt (4).

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