Multi-process digital printing equipment

Abstract

The utility model is applicable to the technical field of digital printing, and provides multi-process digital printing equipment, which comprises an unwinding unit, a printing unit, a control unit and a printing unit, and is characterized in that the unwinding unit is used for conveying printing media with preset tension; the flexographic printing unit is used for receiving the medium conveyed from the unwinding unit and carrying out pretreatment or spot color printing on the printing medium; the digital printing unit is used for receiving the medium conveyed from the flexographic printing unit and carrying out digital printing on the printing medium; the observation unit is used for receiving the medium conveyed from the digital printing unit and providing a printing effect inspection platform for the printing medium; the digital enhanced printing unit is used for receiving the medium conveyed by the observation unit and performing post-processing on the printed pattern; and the winding unit is used for winding the printing medium. In the digital printing operation process, part of printing effects can be checked and detected in time, the precision of whole multi-process printing can be effectively and timely controlled, and waste of working hours and material cost is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of digital printing, and in particular relates to a multi-process digital printing device. Background Art

[0002] In existing multi-process digital printing equipment, the printing medium flows directly through each printing process to carry out the corresponding printing process. However, during the overprinting process of multiple printing processes, this structure cannot perform sample observation on some of the overprinted printing media in the middle, and the overprinting accuracy cannot be adjusted in time, which ultimately leads to unsatisfactory printing results. Utility Model Content

[0003] The multi-process digital printing equipment provided by the utility model aims to solve the problem in the prior art that during the printing operation, it is impossible to perform sample observation on part of the overprinted printing medium and to adjust the overprint accuracy in time, resulting in unsatisfactory printing effects.

[0004] The utility model is implemented as follows: a multi-process digital printing device, comprising:

[0005] An unwinding unit, used for conveying the printing medium at a preset tension;

[0006] a flexographic printing unit, configured to receive the medium conveyed from the unwinding unit and perform pre-processing or spot color printing on the printing medium;

[0007] a digital printing unit, configured to receive the medium conveyed from the flexographic printing unit and perform digital printing on the printing medium;

[0008] An observation unit, used for receiving the medium conveyed from the digital printing unit and providing a printing effect inspection platform for the printed medium;

[0009] A digital enhancement printing unit, configured to receive the medium delivered from the observation unit and perform post-processing on the printed pattern;

[0010] The winding unit is used to receive the printing medium delivered from the digital enhancement printing unit and to wind up the printing medium.

[0011] Furthermore, a cutting station is provided on the observation unit, and the cutting station is used to extract part of the printing medium for testing the sample.

[0012] Furthermore, the observation unit includes a frame and transmission rollers arranged on opposite sides of the frame along the printing medium conveying direction, the frame is provided with a cutting platform between the transmission rollers, the cutting platform is located between the transmission rollers and two groups of pressing components are provided at intervals, the cutting station is formed between the two groups of pressing components, and the pressing component presses the printing medium when the printing medium needs to be extracted.

[0013] Furthermore, two cutting grooves are provided on the cutting platform along the medium printing direction.

[0014] Furthermore, at least one of the cutting grooves is arranged obliquely relative to the printing medium conveying direction.

[0015] Furthermore, the pressing assembly includes:

[0016] A fixing bar, provided on the cutting platform and spaced apart from the cutting platform;

[0017] a pressing bar, movably disposed toward the cutting platform and disposed below the fixing bar;

[0018] A driving member is provided on the fixing bar and connected to the pressing bar. The driving member can drive the pressing bar to move toward the cutting platform to press the printing medium or to move away from the cutting platform to reset.

[0019] Furthermore, the driving member is an elbow clamp, a positioning pin is provided on the pressure strip, a positioning hole is provided on the fixing strip for the positioning pin to pass through, the positioning pin can move in the positioning hole, the elbow clamp is provided on the fixing strip, and the pressure head of the elbow clamp passes through the fixing strip and is connected to the pressure strip.

[0020] Furthermore, the observation unit is provided with a correction mechanism, and the correction mechanism is arranged at the rear end of the cutting station in the conveying direction of the printing medium.

[0021] Furthermore, the correction mechanism is arranged below the cutting station.

[0022] Furthermore, the digital enhancement printing unit is a hot stamping unit or a varnish unit.

[0023] The utility model discloses an advantageous effect reached, through setting up observation unit between digital printing unit and digital enhancement printing unit, make can check whether the printing effect of the print medium of printing process before observation unit meets the printing demand, namely for example but not limited to whether the overprint precision reaches the condition, can timely adjust the printing precision of the front part to guarantee printing effect, make print medium flow to the next digital enhancement printing unit and carry out post-processing process after guaranteeing the printing effect of print medium meets the demand, can effectively, timely control the precision of whole multi -process printing, can avoid the situation that the printing effect is not good when the front part process occurs and can know that the printing effect does not meet the requirement after printing is completed, avoid causing the waste of working hours and material cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structural diagram of a kind of multi -process digital printing equipment provided by the utility model;

[0025] Figure 2 It is the structural diagram of the observation unit of a kind of multi -process digital printing equipment provided by the utility model;

[0026] Figure 3 It is the structural diagram of the pressure material assembly of the observation unit of a kind of multi -process digital printing equipment provided by the utility model.

[0027] EXPLANATION OF DRAWINGS:

[0028] 10, unwinding unit;20, flexographic printing unit;30, digital printing unit;40, observation unit;401, rack;402, transmission roller;403, cutting platform;4031, cutting groove;404, pressure material assembly;4041, fixed strip;4042, pressure strip;4043, driving part;4044, positioning pin;4045, positioning hole;50, digital enhancement printing unit;60, winding unit;70, rectification mechanism;100, print medium. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, the utility model is further explained in detail below by combining with drawings and embodiment. It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.

[0030] Referring to Figure 1The present invention provides a multi-process digital printing device, including an unwinding unit 10, a flexographic printing unit 20, a digital printing unit 30, an observation unit 40, a digital enhancement printing unit 50, and a rewinding unit 60. The unwinding unit 10 is used to convey a printing medium 100 at a preset tension. The flexographic printing unit 20 is used to receive the medium conveyed from the unwinding unit 10 and perform pre-processing or spot color printing on the printing medium 100. The digital printing unit 30 is used to receive the medium conveyed from the flexographic printing unit 20 and perform digital printing on the printing medium 100. The observation unit 40 is used to receive the medium conveyed from the digital printing unit 30 and provide a printing effect inspection platform for the printing medium 100. The digital enhancement printing unit 50 is used to receive the medium conveyed from the observation unit 40 and perform post-processing on the printed pattern. The rewinding unit 60 is used to receive the printing medium 100 conveyed from the digital enhancement printing unit 50 and rewind the printing medium 100.

[0031] Since there are multiple color overprints in multi-process printing, an observation unit 40 is set between the digital printing unit 30 and the digital enhanced printing unit 50, so that the printing effect of the printing medium 100 that is printed before the observation unit 40 can be checked to see whether it meets the printing requirements, that is, for example but not limited to whether the overprint accuracy meets the conditions, the printing accuracy of the front part can be adjusted in time to ensure the printing effect. After ensuring that the printing effect of the printing medium 100 meets the requirements, the printing medium 100 is transferred to the next digital enhanced printing unit 50 for post-processing. The accuracy of the entire multi-process printing can be effectively and timely controlled, and the situation that when the printing effect of the front part of the process is not good, it is necessary to wait until the printing is completed to know that the printing effect does not meet the requirements can be avoided, thereby avoiding waste of labor time and material costs.

[0032] The multi-process digital printing equipment provided by the present invention can timely check and detect part of the printing effects during the digital printing operation, and can effectively and timely control the accuracy of the entire multi-process printing, avoiding waste of labor time and material costs.

[0033] Specifically, the pre-processing of the flexographic printing unit 20 may be to apply a coating liquid on the printing medium 100 to adjust the performance of the printing medium 100, thereby preparing for the printing process of the subsequent process. When the process of the flexographic printing unit 20 is to apply the coating liquid, the subsequent digital printing unit 30 completes all color overprinting work; when the flexographic printing unit 20 performs spot color printing, the subsequent digital printing unit 30 performs other color printing overprinting work on the printing medium 100 that has been printed with the spot color. The flexographic printing unit 20 can choose to pre-process the printing medium 100 or perform spot color printing according to actual production needs.

[0034] Specifically, the digital enhancement printing unit 50 can be a hot stamping unit or a varnish unit. The hot stamping unit is used to perform a hot stamping process on the pattern on the printing medium 100, and the varnish unit is used to perform a varnishing process on the pattern on the printing medium 100, thereby enhancing the printed pattern. Hot stamping or varnishing can also be selected according to actual production needs.

[0035] See also Figure 2 Furthermore, the observation unit 40 is provided with a cutting station for extracting a portion of the printed medium 100 for sample testing. This allows for the extraction of samples from the printed medium 100 after processing by the flexographic printing unit 20 or the digital printing unit 30 if an anomaly is detected. This allows for more precise testing using specialized equipment or other methods, thereby enabling further accurate analysis of any issues with the printed medium 100 processed by the flexographic printing unit 20 or the digital printing unit 30, facilitating resolution.

[0036] See also Figure 2 Furthermore, the observation unit 40 includes a frame 401 and transmission rollers 402 arranged on opposite sides of the frame 401 along the conveying direction of the printing medium 100. The transmission rollers 402 are used for winding the printing medium 100 and transmitting the printing medium 100. The frame 401 is provided with a cutting platform 403 between the transmission rollers 402. The cutting platform 403 is located between the transmission rollers 402 and is provided with two groups of pressing components 404 at intervals. A cutting station is formed between the two groups of pressing components 404. The pressing component 404 presses the printing medium 100 when it is necessary to extract the printing medium 100. In actual production and before the printing medium 100 is officially printed, the printing medium 100 needs to be fed in sequence from the unwinding unit 10, the flexographic printing unit 20, the digital printing unit 30, the observation unit 40, the digital enhanced printing unit 50 and the winding unit 60 to form a complete feeding closed loop. Therefore, the printing medium 100 is laid out in the multi-process digital printing equipment with a certain tension. When a sample needs to be extracted, two sets of pressing components 404 are arranged at intervals along the conveying direction of the printing medium 100 on the cutting platform 403, so that the pressing components 404 press down to press the printing medium 100 tightly, thereby avoiding the printing medium 100 being broken when the printing medium 100 is extracted at the cutting station and running in two directions of the unwinding unit 10 and the winding unit 60, thereby requiring the printing medium 100 feeding work to be completed again after the sample is extracted.

[0037] See also Figure 2Furthermore, two cutting slots 4031 are provided on the cutting platform 403 at intervals along the media printing direction. The cutting slots 4031 allow the cutting blade to quickly cut the printed medium 100 from the cutting slots 4031 when the pressing assembly 404 presses the printed medium 100 against the cutting platform 403, thereby improving sample extraction efficiency.

[0038] See also Figure 3 Furthermore, at least one cutting groove 4031 is arranged at an angle relative to the direction in which the print medium 100 is conveyed. This arrangement allows at least one cut in the print medium 100 to be inclined. This increases the length of the seam when the print medium 100 is spliced ​​together after the sample is taken, thereby improving the connection strength at the splice. Specifically, when the print medium 100 needs to be spliced ​​together, the print medium 100 after the sample is taken is cut. The print medium 100 at the cut position is overlapped and spliced ​​together using adhesive. The adhesive can be attached along the inclined cutting edge, thereby extending the distance of the seam and making the attachment more secure. The inclined seam can also disperse the tension generated by the print medium 100 perpendicular to the direction in which the print medium is conveyed, thereby reducing the possibility of the print medium being torn at the seam.

[0039] It should be noted that the sample extraction operation is specifically to perform pre-printing and sample extraction and testing before the formal printing of a single printing task begins. After the sample is tested and qualified, the printing medium 100 is spliced ​​so that the printing medium 100 is re-routed on the entire device with a preset tension, and then the printing is restarted. Therefore, the extraction of the sample will not affect the job printing of the target task.

[0040] See also Figure 3 Specifically, the press assembly 404 includes a fixed bar 4041, a pressure bar 4042, and a driving member 4043. The fixed bar 4041 is disposed above the cutting platform 403 and spaced apart from the cutting platform 403. The pressure bar 4042 is disposed below the fixed bar 4041 and is movable toward the cutting platform 403. The driving member 4043 is disposed on the fixed bar 4041 and connected to the pressure bar 4042. The driving member 4043 can drive the pressure bar 4042 to move toward or away from the fixed bar 4041. Thus, the fixed bar 4041 provides mounting support for the driving member 4043 on the cutting platform 403. The fixed bar 4041 is spaced apart from the cutting platform 403, providing space for the pressure bar 4042 to move. The driving member 4043 is connected to the pressure bar 4042 and can drive the pressure bar 4042 to move toward the cutting platform 403 to press the print medium 100, or to return to its original position.

[0041] See also Figure 3Specifically, the driving member 4043 is an elbow clamp, a positioning pin 4044 is provided on the pressure strip 4042, and a positioning hole 4045 for the positioning pin 4044 to pass through is provided on the fixed strip 4041, and the positioning pin 4044 can move in the positioning hole 4045. The cooperation between the positioning pin 4044 and the positioning hole 4045 can guide the pressure strip 4042 when it moves, and at the same time provide structural connectivity between the pressure strip 4042 and the fixed strip 4041, thereby improving the structural stability of the pressure strip 4042. The elbow clamp is provided on the fixed strip 4041, and the pressure head of the elbow clamp passes through the fixed strip 4041 and is connected to the pressure strip 4042. The movement of the pressure head can be controlled by controlling the rocker arm of the elbow clamp, thereby driving the fixed strip 4041 to move.

[0042] It should be noted that the toggle clamp is an existing product, and this embodiment does not protect the structure of the toggle clamp, so the structure of the toggle clamp is not described in detail here.

[0043] See also Figure 2 Furthermore, the observation unit 40 is provided with a deflection correction mechanism 70, which is arranged at the rear end of the cutting in the conveying direction of the printing medium 100. In this way, the deflection correction mechanism 70 can correct the printing medium 100 from the output end of the observation unit 40 before conveying it to the digital enhancement printing unit 50, that is, the printing medium 100 first passes through the cutting station and then passes through the deflection correction mechanism 70 before entering the digital enhancement printing unit 50. On the one hand, the deflection correction mechanism 70 can correct the printing medium 100 during the feeding process when no sample is extracted, thereby ensuring the feeding accuracy of the printing medium 100 during the entire printing process, thereby ensuring the printing effect. On the other hand, the deflection correction mechanism 70 can correct the printing medium 100 that is spliced ​​after the sample is extracted, and can also correct the printing medium 100 after the splicing, thereby improving the feeding accuracy of the printing medium 100 to improve the printing effect.

[0044] See also Figure 2 Furthermore, the correction mechanism 70 is arranged below the cutting station, that is, below the cutting platform 403, so that the vertical space of the observation unit 40 can be reasonably utilized to avoid the observation unit 40 being too large.

[0045] It should be noted that the correction mechanism 70 is a common correction mechanism 70 in this field, and the structural composition of the correction mechanism 70 is not elaborated in detail here.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-process digital printing device, characterized in that: include: An unwinding unit, used for conveying the printing medium at a preset tension; a flexographic printing unit, configured to receive the medium conveyed from the unwinding unit and perform pre-processing or spot color printing on the printing medium; a digital printing unit, configured to receive the medium conveyed from the flexographic printing unit and perform digital printing on the printing medium; An observation unit, used for receiving the medium conveyed from the digital printing unit and providing a printing effect inspection platform for the printed medium; A digital enhancement printing unit, configured to receive the medium delivered from the observation unit and perform post-processing on the printed pattern; The winding unit is used to receive the printing medium delivered from the digital enhancement printing unit and to wind up the printing medium.

2. The multi-process digital printing device according to claim 1, characterized in that: The observation unit is provided with a cutting station, which is used to extract part of the printing medium for testing the sample.

3. The multi-process digital printing device according to claim 2, characterized in that: The observation unit includes a frame and transmission rollers arranged on opposite sides of the frame along the printing medium conveying direction. The frame is provided with a cutting platform between the transmission rollers. The cutting platform is located between the transmission rollers and is provided with two groups of pressing components at intervals. The cutting station is formed between the two groups of pressing components. The pressing components press the printing medium when it is necessary to extract the printing medium.

4. The multi-process digital printing device according to claim 3, characterized in that: The cutting platform is provided with two cutting grooves spaced apart along the medium printing direction.

5. The multi-process digital printing device according to claim 4, characterized in that: At least one of the cutting slots is arranged obliquely relative to the printing medium conveying direction.

6. The multi-process digital printing device according to claim 3, characterized in that: The pressing component comprises: A fixing bar, provided on the cutting platform and spaced apart from the cutting platform; a pressing bar, movably disposed toward the cutting platform and disposed below the fixing bar; A driving member is provided on the fixing bar and connected to the pressing bar. The driving member can drive the pressing bar to move toward the cutting platform to press the printing medium or to move away from the cutting platform to reset.

7. The multi-process digital printing device according to claim 6, characterized in that: The driving member is a toggle clamp, a positioning pin is provided on the pressure strip, a positioning hole is provided on the fixing strip for the positioning pin to pass through, the positioning pin can move in the positioning hole, the toggle clamp is provided on the fixing strip, and the pressure head of the toggle clamp passes through the fixing strip and is connected to the pressure strip.

8. The multi-process digital printing device according to claim 2, characterized in that: The observation unit is provided with a deviation correction mechanism, and the deviation correction mechanism is arranged at the rear end of the cutting station in the conveying direction of the printing medium.

9. The multi-process digital printing device according to claim 8, characterized in that: The deviation correction mechanism is arranged below the cutting station.

10. The multi-process digital printing device according to claim 1, characterized in that: The digital enhancement printing unit is a hot stamping unit or a varnish unit.

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