Inkjet coding equipment

Abstract

The inkjet coding device relates to the technical field of inkjet coding devices, and includes a main conveyor line, an inkjet coding device, a flattening device for flattening the area to be inkjet coded on the packaging bag, and a follow-up device for driving the flattening device to move synchronously with the packaging bag. The flattening device includes a flattening suction cup, a lifting mechanism and a translation mechanism. The flattening device moves synchronously with the packaging bag under the drive of the follow-up device. The lifting mechanism drives the flattening suction cup to move downwards to contact the packaging bag. After the flattening suction cup sucks and tightens the packaging bag, the translation mechanism drives each flattening suction cup to move around relative to the area to be inkjet coded to flatten the area to be inkjet coded. Before inkjet coding, the area to be inkjet coded on the packaging bag is sucked and tightened by the flattening suction cup and pulled around. After the area to be inkjet coded is flattened, it is then inkjet coded by the inkjet coding device, thereby eliminating the influence of wrinkles on inkjet coding and making the inkjet coding quality and effect better.

Description

Technical Field

[0001] The present invention relates to the technical field of inkjet coding equipment. Background Art

[0002] An inkjet coding device is an automated device used to print identifications such as characters, graphics, barcodes, etc. on the surfaces of various materials. Due to its rapid and convenient programming, high degree of automation, and extremely fast printing speed, it is widely used in the printing of packaging materials. Generally, the inkjet coding device has certain requirements for the flatness of the surface of the packaging bag to be inkjet-coded. The presence of wrinkles in the area to be inkjet-coded will affect the quality and effect of inkjet coding. When there are wrinkles on the surface of the packaging bag, it will cause uneven inkjet coding, making the edges of the inkjet coding blurred or unclear. At the wrinkles, the inkjet coding may be broken or missing, especially more obvious in small characters or patterns. The inkjet coding at the wrinkles may also overlap, making the information difficult to identify. Summary of the Invention

[0003] In view of this, the present invention provides an inkjet coding device, which can flatten the area to be inkjet-coded on the packaging bag before inkjet coding to eliminate the influence of wrinkles on inkjet coding, and the inkjet coding quality and effect are better.

[0004] To achieve the above object, the present invention provides the following technical solutions.

[0005] An inkjet coding device, including a main conveyor line and an inkjet coding device. The main conveyor line is used to convey packaging bags, and it further includes a flattening device for flattening the area to be inkjet-coded on the packaging bag and a follow-up device for driving the flattening device to move synchronously with the packaging bag. The flattening device includes:

[0006] Flattening suction cups, provided with a plurality of;

[0007] A lifting mechanism for driving the flattening suction cups to rise or fall;

[0008] A translation mechanism for driving the flattening suction cups to translate;

[0009] The flattening device moves synchronously with the packaging bag under the drive of the follow-up device. The lifting mechanism drives the flattening suction cups to move downwards to contact the packaging bag. After the flattening suction cups suck tightly the packaging bag, the translation mechanism drives each flattening suction cup to move towards the surroundings relative to the area to be inkjet-coded to flatten the area to be inkjet-coded. When the area to be inkjet-coded passes through the inkjet coding device, it is inkjet-coded. After the inkjet coding is completed, the flattening suction cups release the packaging bag and reset under the drive of the translation mechanism, the lifting mechanism and the follow-up device.

[0010] Before inkjet coding, a flattening suction cup is used to tightly suck the area to be inkjet coded on the packaging bag and pull it around. After the area to be inkjet coded is flattened, it passes through the inkjet coding device for inkjet coding, thereby eliminating the influence of wrinkles on inkjet coding and making the inkjet coding quality and effect better. The flattening suction cup is driven by a follow-up device to move simultaneously with the packaging bag, so that the flattening operation can be completed while the packaging bag is being conveyed. The main conveyor line of the packaging bag can keep running without pausing, which can effectively improve the efficiency of inkjet coding.

[0011] Preferably, the flattening device further includes a flipping mechanism, which can drive the flattening suction cup to flip outwards and reset inwards relative to the area to be inkjet coded. After the flattening suction cup tightly sucks the area to be inkjet coded, the lifting mechanism drives the flattening suction cup to rise a preset distance, and the translation mechanism drives the flattening suction cup to move inwards a preset distance relative to the area to be inkjet coded. While the flattening suction cup moves inwards, the flipping mechanism drives the flattening suction cup to flip outwards a preset angle, so that the flattening suction cup forms a bend with the area to be inkjet coded. After forming the bend, the translation mechanism drives the flattening suction cup to move outwards relative to the area to be inkjet coded, so that the area to be inkjet coded is flattened.

[0012] Preferably, there are multiple flattening devices, and the follow-up device includes an annular synchronous conveyor belt. Each flattening device is installed on the synchronous conveyor belt, and the synchronous conveyor belt drives each flattening device to move circularly and rotate, so that the flattening device moves or resets synchronously with the packaging bag.

[0013] Preferably, the inkjet coding equipment of the present invention further includes a flattening device, and the flattening device includes:

[0014] A vibration mechanism, including a driving motor, a rotating cam and a vibrating plate. The vibrating plate is located below the conveyor belt of the main conveyor line to be able to jack up the conveyor belt. The driving motor is used to drive the rotating cam to rotate, and the rotating cam contacts the vibrating plate to drive the vibrating plate to vibrate up and down;

[0015] A flattening mechanism, including a plurality of eccentric pressing rollers that can rotate eccentrically. The eccentric pressing rollers are located above the conveyor belt of the main conveyor line to be able to contact the upper surface of the packaging bag;

[0016] After the packaging bag is inkjet coded, it is conveyed by the main conveyor line into the flattening device. The vibrating plate is driven by the driving motor and the rotating cam to vibrate up and down and push the conveyor belt of the main conveyor line to vibrate up and down. The eccentric pressing rollers rotate eccentrically and beat the upper surface of the packaging bag, so that the packaging bag is restored to be flat under the action of the vibrating plate and the eccentric pressing rollers.

[0017] Preferably, the inkjet coding device includes:

[0018] An inkjet head, used for inkjet coding the packaging bag;

[0019] An inkjet coding driving mechanism, connected to the inkjet head, including a locking component;

[0020] A follower slide bar, which is connected to the inkjet driving mechanism and can slide telescopically;

[0021] When the flattening device passes through the inkjet device, the locking component locks the flattening device, and the follower slide bar is driven by the flattening device to extend, so that the inkjet driving mechanism moves synchronously with the flattening device. The inkjet driving mechanism drives the inkjet head to translate relative to the area to be inkjet on the packaging bag to complete inkjetting. After inkjetting is completed, the locking component releases the flattening device, and the follower slide bar retracts to drive the inkjet head to reset.

[0022] Preferably, the inkjet driving mechanism is slidably connected to the follower slide bar. The inkjet device further includes a buffer spring, which is respectively connected to the inkjet driving mechanism and the follower slide bar. When the locking component locks the flattening device, the inkjet driving mechanism is impacted by the flattening device and slides to compress the buffer spring, so that the kinetic energy generated by the impact is absorbed by the buffer spring.

[0023] Preferably, the flattening device is provided with a blocking block and a locking hole. The inkjet driving mechanism further includes:

[0024] A driving lead screw, which is rotationally connected to the inkjet head to drive the inkjet head to translate for inkjetting;

[0025] The locking component includes:

[0026] A locking pin, which can be inserted into the locking hole to lock the flattening device and the inkjet driving mechanism;

[0027] A locking cylinder, which is connected to the locking pin to drive the locking pin to insert into or withdraw from the locking hole;

[0028] A positioning rod, which can be engaged with the blocking block to align the locking pin with the locking hole;

[0029] A positioning cylinder, which is connected to the positioning rod to drive the positioning rod to engage with or disengage from the blocking block;

[0030] When the flattening device passes through the inkjet device, the positioning cylinder drives the positioning rod to extend, so that the positioning rod engages with the blocking block and the locking pin is aligned with the locking hole. The locking cylinder drives the locking pin to insert into the locking hole to lock the flattening device, so that the inkjet driving mechanism moves synchronously with the flattening device. The driving lead screw drives the inkjet head to translate relative to the area to be inkjet on the packaging bag to complete inkjetting. After inkjetting is completed, the positioning cylinder drives the positioning rod to disengage from the blocking block, and the locking cylinder drives the locking pin to withdraw from the locking hole to release the locking between the inkjet driving mechanism and the flattening device.

[0031] Preferably, the flipping mechanism includes:

[0032] A flipping guide block, which is installed on the translation mechanism. The flipping guide block is provided with an arc-shaped flipping cavity, and the flipping cavity communicates with an external air pump;

[0033] The flipping guide rod, whose shape corresponds to the flipping cavity and is slidably connected within the flipping cavity, is fixedly connected to the flattening suction cup to drive the flattening suction cup to flip;

[0034] The reset spring, which is arranged within the flipping cavity and connected to the flipping guide rod, provides an elastic force for the flipping guide rod to reset and pop out of the flipping cavity;

[0035] When the external air pump pumps air, a negative pressure is generated within the flipping cavity to draw the flipping guide rod back into the flipping cavity, causing the flattening suction cup to be driven to flip outward by a preset angle. After the flattening suction cup releases the surface to be inkjet - coded, the external air pump stops pumping air, and the reset spring pushes the flipping guide rod to reset and pop out of the flipping cavity.

[0036] Preferably, the lifting mechanism includes:

[0037] The lifting cylinder, which is used to drive the translation mechanism to rise or fall;

[0038] The mounting plate, which is used to mount the translation mechanism and is fixedly connected to the lifting cylinder;

[0039] The translation mechanism includes:

[0040] The translation cylinders, of which there are multiple and are in one - to - one correspondence with the flattening suction cups, so that each flattening suction cup is driven to translate by the corresponding translation cylinder. Brief Description of the Drawings

[0041] Figure 1 It is a three - dimensional structural schematic diagram of the inkjet - coding device of the present invention.

[0042] Figure 2 It is a three - dimensional structural schematic diagram of the inkjet - coding device of the present invention from another perspective (some structures are hidden for easy display).

[0043] Figure 3 It is a three - dimensional structural schematic diagram of the inkjet - coding device and the flattening device.

[0044] Figure 4 It is a three - dimensional structural schematic diagram of the inkjet - coding device.

[0045] Figure 5 It is a three - dimensional structural schematic diagram of part of the structure of the flattening device.

[0046] Figure 6 It is a cross - sectional view of the translation mechanism and the flipping structure.

[0047] Figure 7 It is a schematic diagram of the flattening suction cup pulling the area to be inkjet - coded on the packaging bag after flipping.

[0048] Figure 8 For Figure 2 The cross - sectional view of the inkjet - coding device in the state.

[0049] Figure 9 is Figure 8 an enlarged schematic view of part A in

[0050] Figure 10 is Figure 8 an enlarged schematic view of part B in

[0051] Figure 11 is a cross-sectional view of the inkjet printing device and the flattening device.

[0052] Reference numerals include:

[0053] Inkjet printing device 1, inkjet printing head 11, follower slide bar 12, driving lead screw 13, mounting bracket 14, locking pin 141, locking cylinder 142, positioning rod 143, positioning cylinder 144, buffer spring 15;

[0054] Flattening device 2, flattening suction cup 21, lifting cylinder 22, blocking block 221, locking hole 222, mounting plate 23, translation cylinder 24, flipping guide block 25, flipping cavity 251, return spring 252, flipping guide rod 26;

[0055] Follower device 3, synchronous conveyor belt 31;

[0056] Re-flattening device 4, rotating cam 41, vibrating plate 42, eccentric pressure roller 43;

[0057] Main conveyor line 5, conveyor belt 51;

[0058] Packaging bag 6, machine frame 7. Detailed implementation mode

[0059] The following describes the present invention in detail with reference to specific embodiments.

[0060] Combined with Figures 1-3 , the inkjet printing equipment of this embodiment includes a main conveyor line 5 and an inkjet printing device 1. The main conveyor line 5 is used to convey the packaging bag 6, and also includes a flattening device 2 for flattening the area to be inkjet printed on the packaging bag 6 and a follower device 3 for driving the flattening device 2 to move synchronously with the packaging bag 6. As Figure 5 shown, the flattening device 2 includes:

[0061] Flattening suction cup 21. In this embodiment, one flattening device 2 is provided with 2 flattening suction cups 21;

[0062] Lifting mechanism, including a lifting cylinder 22 and a mounting plate 23, and the mounting plate 23 is fixedly connected to the lifting cylinder 22;

[0063] The translation mechanism includes a translation cylinder 24. The translation cylinder 24 is fixedly connected to the mounting plate 23 to be driven by the lifting cylinder 22 for lifting. One flattening device 2 is provided with two translation cylinders 24. The translation cylinders 24 correspond to the flattening suction cups 21 one by one. Each flattening suction cup 21 is fixedly installed on the corresponding translation cylinder 24 to be driven by the corresponding translation cylinder 24 for translation. Among them, in this embodiment, the mounting angle of the translation cylinder 24 is installed towards the center of the area to be inkjet-printed, so that the flattening suction cups 21 can be driven to translate towards the periphery of the area to be inkjet-printed;

[0064] As Figure 2 shown, this embodiment is provided with 16 flattening devices 2. The follower device 3 includes two annular synchronous conveyor belts 31. The two synchronous conveyor belts 31 are symmetrically distributed on both sides of the main conveyor line 5 and are driven by the same motor. The synchronous conveyor belts 31 have the same speed as the main conveyor line 5. Each flattening device 2 is respectively installed on the two synchronous conveyor belts 31 in a pairwise symmetrical manner. The synchronous conveyor belts 31 drive each flattening device 2 to move in a circular rotation. The flattening device 2 moves synchronously with the packaging bag 6 under the drive of the follower device 3. The lifting cylinder 22 drives the flattening suction cup 21 to move downward to contact the packaging bag 6. After the flattening suction cup 21 sucks tightly the packaging bag 6, the translation cylinder 24 drives each flattening suction cup 21 to move towards the periphery relative to the area to be inkjet-printed to flatten the area to be inkjet-printed. When the area to be inkjet-printed passes through the inkjet device 1, it is inkjet-printed. After the inkjet printing is completed, the flattening suction cup 21 releases the packaging bag 6 and resets under the drive of the translation cylinder 24, the lifting cylinder 22 and the synchronous conveyor belt 31.

[0065] Before inkjet printing, the flattening suction cup 21 sucks tightly the area to be inkjet-printed of the packaging bag 6 and pulls it towards the periphery. After flattening the area to be inkjet-printed, it passes through the inkjet device 1 for inkjet printing, thereby eliminating the influence of wrinkles on inkjet printing and making the inkjet printing quality and effect better. If only one flattening device 2 is set to flatten the packaging bag 6, then the conveying interval of the packaging bag 6 will be enlarged and the conveying speed will be reduced, resulting in a decrease in the efficiency of inkjet printing. By setting a plurality of flattening devices 2, the conveying interval of the packaging bag 6 is shortened, and through the set synchronous conveyor belts 31, each flattening device 2 can move synchronously with the conveying of the packaging bag 6. After the inkjet printing is completed, it can continue to rotate back to the entrance of the packaging bag 6 and continue to adsorb the next packaging bag 6 for flattening operation, so that each process is closely connected, the main conveyor line 5 does not need to stop, and the flattening operation and the inkjet printing operation can be completed during the conveying process, thereby effectively improving the efficiency of inkjet printing.

[0066] Since the suction force of the flattening suction cup 21 should not be too large, otherwise it is easy to leave obvious suction marks on the packaging bag 6, especially for the thin film plastic packaging bag 6. However, if the suction force is small, it is easy to cause the flattening suction cup 21 to slip or disengage when horizontally pulling the packaging bag 6, resulting in flattening failure. Combined with Figures 5-7The leveling device 2 also includes a flipping mechanism, which can drive the leveling suction cup 21 to flip outward and reset inward relative to the coding area. The flipping mechanism includes:

[0067] The flip guide block 25 is installed on the translation mechanism. The flip guide block 25 is provided with an arc-shaped flip cavity 251. The flip cavity 251 is connected to an external air pump.

[0068] The flip guide rod 26 has a shape corresponding to the flip cavity 251 and is slidably connected in the flip cavity 251. The flip guide rod 26 is fixedly connected to the leveling suction cup 21 to drive the leveling suction cup 21 to flip;

[0069] A return spring 252 is disposed in the flip cavity 251 and connected to the flip guide rod 26 to provide the flip guide rod 26 with an elastic force to return the flip cavity 251;

[0070] After the flattening suction cup 21 sucks the area to be coded, the lifting cylinder 22 drives the flattening suction cup 21 to rise by a preset distance, and the translation cylinder 24 drives the flattening suction cup 21 to move inward by a preset distance relative to the area to be coded. While the flattening suction cup 21 moves inward, the external air pump pumps air, and negative pressure is generated in the flip chamber 251 to pull the flip guide rod 26 back to the flip chamber 251, so that the flattening suction cup 21 is driven to flip outward by a preset angle, and the flattening suction cup 21 and the area to be coded are bent. After the bending is formed, the translation cylinder 24 drives the flattening suction cup 21 to move outward relative to the area to be coded, so that the area to be coded is flattened. After the flattening suction cup 21 releases the surface to be coded, the external air pump stops pumping air, and the reset spring 252 pushes the flip guide rod 26 to reset and pop out of the flip chamber 251. The flattening suction cup 21 sucks the surface of the packaging bag 6 and then rises for a certain distance, so that the area to be coded is separated from the contact with the items in the packaging bag 6, so as to avoid wrinkles in the area to be coded due to the uneven surface of the items in the bag. Then the flattening suction cup 21 moves inward for a certain distance (with the center of the area to be coded as the inside and the area away from the center as the outside), and flips outward 90° while moving, so that the flattening suction cup 21 and the area to be coded form a bend. Then the flattening suction cup 21 moves outward again to expand the area to be coded. At this time, the flattening suction cup 21 and the bend will produce a clamping effect, so that the flattening suction cup 21 is less likely to slip or fall off.

[0071] Since a series of actions when the suction cups are flattened will lift and bend the packaging bag 6, wrinkles may appear in other areas of the packaging bag 6. After the suction cups are released, the items contained in the packaging bag 6 may accumulate and cannot recover on their own, resulting in the inability to eliminate the wrinkles. Subsequently, when the packaging bag 6 is stacked and packed in boxes, it will be stacked and pressed, and then the wrinkles will be compacted to produce creases or folds, making the packaging bag 6 unsightly. At the same time, for the continuous packaging bag 6 that needs to be cut in subsequent processes, the previous lifting and bending operations will shorten the length of a single packaging bag 6, resulting in the offset of the position where cutting is originally required, causing cutting errors. As Figures 1-2 shown, the inkjet printing device of this embodiment further includes a flattening device 4, as Figure 10 shown, the flattening device 4 includes:

[0072] A vibration mechanism, including a driving motor (not marked in the figure), a rotating cam 41 and a vibrating plate 42. The vibrating plate 42 is located below the conveyor belt 51 of the main conveyor line 5 to be able to lift the conveyor belt 51. The driving motor is used to drive the rotating cam 41 to rotate, and the rotating cam 41 contacts the vibrating plate 42 to drive the vibrating plate 42 to vibrate up and down;

[0073] A flattening mechanism, including a plurality of eccentric rollers 43 that can rotate eccentrically. The eccentric rollers 43 are located above the conveyor belt 51 of the main conveyor line 5 to be able to contact the upper surface of the packaging bag 6;

[0074] After the inkjet printing of the packaging bag 6 is completed, it is conveyed by the main conveyor line 5 into the flattening device 4. The vibrating plate 42 is driven by the driving motor and the rotating cam 41 to vibrate up and down, and then pushes the conveyor belt 51 of the main conveyor line 5 to vibrate up and down. The eccentric rollers 43 rotate eccentrically and beat the upper surface of the packaging bag 6, so that the packaging bag 6 is restored to a flat state under the action of the vibrating plate 42 and the eccentric rollers 43. By setting the flattening device 4, after the inkjet printing is completed, the surface of the packaging bag 6 and the items inside the bag are restored to a flat state by using the vibrating plate 42 and the eccentric rollers 43, so as to avoid generating creases or folds, or affecting subsequent cutting processes.

[0075] Usually, the position of the inkjet head 11 is fixed, and the packaging bag 6 is conveyed by the main conveyor line 5. Since the main conveyor line 5 is relatively long and has to pass through multiple pieces of equipment, its speed is easily affected and fluctuates. Even if there is a slight speed fluctuation, it will cause the deviation of the inkjet printing position, resulting in poor consistency of the inkjet printing and reduced inkjet printing quality. As Figure 9 shown, the inkjet printing device 1 of this embodiment includes:

[0076] An inkjet head 11, used for inkjet printing on the packaging bag 6;

[0077] A follow-up sliding rod 12, which is slidably connected to the frame 7 to be able to slide and retract, and is provided with a power source to drive the follow-up sliding rod 12 to retract. The follow-up sliding rod 12 can be in the form of an electric push rod or a single-acting cylinder;

[0078] The inkjet driving mechanism includes a driving lead screw 13, a mounting bracket 14 and a locking assembly. The mounting bracket 14 is slidably connected to the follower slide bar 12. The driving lead screw 13 is rotatably connected to the mounting bracket 14, and the inkjet head 11 is rotatably connected to the driving lead screw 13. The rotation of the driving lead screw 13 is used to drive the inkjet head 11 to perform linear reciprocating movement, thereby driving the inkjet head 11 to translate and perform inkjet, as Figure 5 and Figure 6 shown. The lifting cylinder 22 is provided with a blocking block 221 and a locking hole 222. The locking assembly includes:

[0079] A locking pin 141 that can be inserted into the locking hole 222 to lock the flattening device 2 and the inkjet driving mechanism;

[0080] A locking cylinder 142 connected to the locking pin 141 to drive the locking pin 141 to insert into or withdraw from the locking hole 222;

[0081] A positioning rod 143 that can be engaged with the blocking block 221 to align the locking pin 141 with the locking hole 222;

[0082] A positioning cylinder 144 connected to the positioning rod 143 to drive the positioning rod 143 to engage with or disengage from the blocking block 221;

[0083] As Figure 11 shown, when the flattening device 2 passes by the inkjet device 1, the positioning cylinder 144 drives the positioning rod 143 to extend so that the positioning rod 143 engages with the blocking block 221, and the locking pin 141 is aligned with the locking hole 222. The locking cylinder 142 drives the locking pin 141 to insert into the locking hole 222 to lock the flattening device 2, and the follower slide bar 12 is driven by the flattening device 2 to extend, so that the inkjet driving mechanism and the flattening device 2 move synchronously. The driving lead screw 13 drives the inkjet head 11 to translate relative to the area to be inkjet on the packaging bag 6 to complete the inkjet. After the inkjet is completed, the positioning cylinder 144 drives the positioning rod 143 to disengage from the blocking block 221, and the locking cylinder 142 drives the locking pin to withdraw from the locking hole 222 to release the locking between the inkjet driving mechanism and the flattening device 2, and the follower slide bar 12 retracts to drive the inkjet head 11 to reset. By locking the inkjet driving mechanism and the flattening device 2, it is ensured that the inkjet driving mechanism and the area to be inkjet are kept relatively stationary, and then the inkjet head 11 is driven to translate by the driving lead screw to complete the inkjet, so as to eliminate the influence caused by the speed fluctuation of the main conveyor line 5 and ensure the inkjet quality and consistency.

[0084] While the inkjet head 11 is driven by the follower slide bar 12 to move backward and reset (with the conveying direction of the packaging bag 6 as the front), the next flattening device 2 also moves forward along with the main conveyor line 5. When the locking assembly contacts and locks with the flattening device 2 during their opposite movement, a certain degree of impact will be generated, which is likely to cause equipment damage. As Figure 9As shown in the figure, the inkjet printing device 1 of this embodiment further includes a buffer spring 15. The buffer spring 15 is respectively connected to the inkjet driving mechanism and the follower slide rod 12. When the locking component locks the flattening device 2, the inkjet driving mechanism is impacted by the flattening device 2 and slides to compress the buffer spring 15, so that the kinetic energy generated by the impact is absorbed by the buffer spring 15, avoiding equipment damage.

[0085] The specific working process of the inkjet printing equipment of this embodiment is as follows:

[0086] The main conveyor line 5 conveys the packaging bag 6, and the synchronous conveyor belt 31 drives the flattening device 2 to move synchronously with the packaging bag 6. After the packaging bag 6 enters the range of the flattening device 2, the lifting cylinder 22 drives the flattening suction cup 21 to move downward to contact the packaging bag 6 and suck it tightly. After the flattening suction cup 21 sucks the area to be inkjet printed, the lifting cylinder 22 first drives the flattening suction cup 21 to rise a preset distance, and then the translation cylinder 24 drives the flattening suction cup 21 to move inward relative to the area to be inkjet printed by a preset distance. While moving inward, the flipping mechanism evacuates air through an external air pump to generate negative pressure in the flipping cavity 251, driving the flipping guide rod 26 and the flattening suction cup 21 to flip outward by a preset angle. After forming a bend, the translation cylinder 24 then drives the flattening suction cup 21 to move outward relative to the area to be inkjet printed, thereby flattening the area to be inkjet printed;

[0087] When the area to be inkjet printed passes through the inkjet printing device 1, the positioning cylinder 144 drives the positioning rod 143 to extend and engage with the blocking block 221 of the flattening device 2, aligning the locking pin 141 with the locking hole 222. Then the locking cylinder 142 drives the locking pin 141 to insert into the locking hole 222, thereby locking the flattening device 2. The follower slide rod 12 is driven by the flattening device 2 to extend, enabling the inkjet driving mechanism to move synchronously with the flattening device 2. The driving screw rod 13 drives the inkjet head 11 to translate relative to the area to be inkjet printed to complete the inkjet printing. During the locking process, if an impact occurs between the inkjet driving mechanism and the flattening device 2, the inkjet driving mechanism will slide and compress the buffer spring 15 to buffer the impact kinetic energy. After the inkjet printing is completed, the positioning cylinder 144 drives the positioning rod 143 to disengage from the blocking block 221, and the locking cylinder 142 drives the locking pin to withdraw from the locking hole 222 to release the locking between the inkjet driving mechanism and the flattening device 2. The follower slide rod 12 retracts to drive the inkjet head 11 to reset, and the flattening suction cup 21 releases the packaging bag 6 and resets under the drive of the translation cylinder 24, the lifting cylinder 22, the follower device 3, and the return spring 252;

[0088] After the packaging bag 6 is inkjet printed, it is conveyed by the main conveyor line 5 into the flattening device 4. The driving motor drives the rotating cam 41 to rotate. The rotating cam 41 contacts the vibrating plate 42 and drives the vibrating plate 42 to vibrate up and down. The vibrating plate 42 pushes the conveyor belt 51 to vibrate up and down. At the same time, each eccentric pressure roller 43 rotates eccentrically to beat the upper surface of the packaging bag 6. Through the combined action of the vibrating plate 42 and the eccentric pressure roller 43, the packaging bag 6 is restored to a flat state.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. The coding equipment includes a main conveying line and a coding device. The main conveying line is used to convey packaging bags, and is characterized in that: It also includes a flattening device for flattening the area to be coded on the packaging bag and a follower device for driving the flattening device to move synchronously with the packaging bag; The leveling device includes: Flattening suction cups, with multiple ones; A lifting mechanism is used to drive the leveling suction cup to rise or fall; A translation mechanism, used for driving the leveling suction cup to translate; The leveling device moves synchronously with the packaging bag under the drive of the follower device, and the lifting mechanism drives the leveling suction cup to move downward to contact the packaging bag. After the leveling suction cup sucks the packaging bag tightly, the translation mechanism drives each leveling suction cup to move around relative to the area to be coded, so as to level the area to be coded; The area to be coded is coded when it passes through the coding device. After the coding is completed, the suction cup is flattened to release the packaging bag and reset under the drive of the translation mechanism, lifting mechanism and follower device; The leveling device also includes: A turning mechanism, which can drive the flattening suction cup to turn outward and reset inward relative to the coding area; After the flattening suction cup sucks the area to be coded, the lifting mechanism drives the flattening suction cup to rise by a preset distance, and the translation mechanism drives the flattening suction cup to move inward by a preset distance relative to the area to be coded. While the flattening suction cup moves inward, the flipping mechanism drives the flattening suction cup to flip outward by a preset angle, so that the flattening suction cup and the area to be coded are bent. After the bending is formed, the translation mechanism drives the flattening suction cup to move outward relative to the area to be coded, so that the area to be coded is flattened; The inkjet device includes: Spray terminal, used to spray code on packaging bags; The inkjet printer drive mechanism is connected to the inkjet printer terminal, including a locking assembly; A follower slide bar, which is connected to the inkjet printer drive mechanism and can slide and retract; When the leveling device passes through the inkjet device, the locking assembly locks the leveling device, and the follower slide bar is driven to extend by the leveling device, so that the inkjet drive mechanism and the leveling device move synchronously, and the inkjet drive mechanism drives the inkjet terminal to move horizontally relative to the area to be inkjet printed on the packaging bag to complete the inkjet printing. After the inkjet printing is completed, the locking assembly releases the leveling device, and the follower slide bar retracts to drive the inkjet terminal to reset; The flip mechanism includes: A flip guide block is installed on the translation mechanism, and the flip guide block is provided with an arc-shaped flip cavity, and the flip cavity is connected to an external air pump; A flip guide rod, whose shape corresponds to the flip cavity and is slidably connected in the flip cavity, is fixedly connected to the leveling suction cup to drive the leveling suction cup to flip; A reset spring is disposed in the flip cavity and connected to the flip guide rod to provide the flip guide rod with elastic force to reset and pop out of the flip cavity; When the external air pump draws air, negative pressure is generated in the flipping cavity to draw the flipping guide rod back into the flipping cavity, so that the leveling suction cup is driven to flip outward at a preset angle. After the leveling suction cup releases the surface to be coded, the external air pump stops pumping air, and the reset spring pushes the flipping guide rod to reset and pop out of the flipping cavity.

2. The coding device according to claim 1, characterized in that: There are multiple leveling devices, and the follower device includes an annular synchronous conveyor belt. Each leveling device is installed on the synchronous conveyor belt, and the synchronous conveyor belt drives each leveling device to rotate in an annular manner so that the leveling device and the packaging bag move or reset synchronously.

3. The coding device according to claim 1, characterized in that: Also included is a leveling device, which includes: The vibration mechanism includes a driving motor, a rotating cam and a vibration plate, wherein the vibration plate is located below the conveyor belt of the main conveyor line to lift up the conveyor belt, the driving motor is used to drive the rotating cam to rotate, and the rotating cam contacts the vibration plate to drive the vibration plate to vibrate up and down; A flattening mechanism, comprising a plurality of eccentric pressing rollers capable of eccentric rotation, the eccentric pressing rollers being located above the conveyor belt of the main conveying line so as to contact the upper surface of the packaging bag; After the packaging bag is coded, it is transported by the main conveyor line into the leveling device. The vibration plate is driven by the drive motor and the rotating cam to vibrate up and down, pushing the conveyor belt of the main conveyor line to vibrate up and down. The eccentric pressure roller rotates eccentrically and beats the upper surface of the packaging bag, so that the packaging bag is restored to flatness under the action of the vibration plate and the eccentric pressure roller.

4. The coding device according to claim 1, characterized in that: The inkjet drive mechanism is slidably connected to the follower slide bar, and the inkjet device also includes: A buffer spring, which is respectively connected to the inkjet drive mechanism and the follower slide rod; When the locking assembly locks the leveling device, the inkjet drive mechanism is impacted by the leveling device and slides to compress the buffer spring, so that the kinetic energy generated by the impact is absorbed by the buffer spring.

5. The coding device according to claim 1, characterized in that: The leveling device is provided with a blocking block and a locking hole, and the inkjet drive mechanism also includes: A driving screw rod is rotatably connected to the inkjet printer to drive the inkjet printer to move horizontally for inkjet printing; The locking assembly includes: A locking pin, which can be inserted into the locking hole to lock the leveling device and the inkjet drive mechanism; A locking cylinder connected to the locking bayonet to drive the locking bayonet to insert into or withdraw from the locking hole; A positioning rod, which can be engaged with the blocking block so that the locking pin is aligned with the locking hole; A positioning cylinder connected to the positioning rod to drive the positioning rod to engage with or disengage from the blocking block; When the leveling device passes through the inkjet device, the positioning cylinder drives the positioning rod to extend so that the positioning rod is engaged with the blocking block and the locking pin is aligned with the locking hole; The locking cylinder drives the locking pin to be inserted into the locking hole to lock the leveling device, so that the inkjet drive mechanism and the leveling device move synchronously; The driving screw drives the inkjet terminal to move horizontally relative to the area to be inkjet printed on the packaging bag to complete the inkjet printing. After the inkjet printing is completed, the positioning cylinder drives the positioning rod to disengage from the blocking block, and the locking cylinder drives the locking pin to exit the locking hole to release the lock of the inkjet printing drive mechanism and the leveling device.

6. The coding device according to claim 1, characterized in that: The lifting mechanism includes: Lifting cylinder, used to drive the translation mechanism to rise or fall; A mounting plate, used for mounting the translation mechanism, which is fixedly connected to the lifting cylinder; The translation mechanism includes: There are a plurality of translation cylinders, which correspond one to one with the leveling suction cups, so that each leveling suction cup is driven to translate by the corresponding translation cylinder.

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