A high stability printing device

Abstract

The utility model discloses a high-stability printing device, including an unwinding component, characterized in that a first reverse bending component, a double-sided dust removal and air suction component, a double-sided corona component, a front traction roller group, an overprint speed regulating traction component, and an arranged printing unit are sequentially arranged on one side of the unwinding component, a first electric eye for detecting overprint color marks is arranged in the first group of printing units, and the first electric eye can control the action of the overprint speed regulating traction component, a first rear traction roller group, an online visual detection component, a second reverse bending component, a slitting and trimming component, and a second rear traction roller group are sequentially arranged at the discharge end of the last group of printing units, a single sheet cutting knife group, a single sheet conveyor belt group and a material receiving table are arranged on one side of the second rear traction roller group, and a warp winding roller group, a third rear traction roller group and a winding component are arranged below the second rear traction roller group. The utility model has a simple structure and a reasonable design, can effectively improve the stability of printing operations, and arranges different components to ensure printing quality, has more abundant functions, and can realize the slitting, stacking, collection or winding collection of printed paper at the same time, meeting different collection requirements.

Description

Technical Field

[0001] The utility model relates to printing equipment, in particular to high-stability printing equipment. Background Art

[0002] Printing equipment is a specialized device used to print the desired pattern on a substrate. Traditional printing equipment typically consists of a simple unwinding assembly, a traction assembly, a printing unit, and a rewinding assembly. During operation, the traction assembly transports the substrate within the unwinding assembly to the printing unit for printing. After printing, the substrate is reeled in and collected by the rewinding assembly. This type of printing equipment often presents several issues in practical use: 1. For some rigid substrates, some bends may persist after unwinding, making it difficult to maintain a flat surface, impacting subsequent traction and printing stability. 2. Dust may accumulate on the unwound substrate, interfering with subsequent printing operations. 3. For products requiring two or even three overprints, the unwinding traction and the substrate's stretching may cause the printed pattern to misalign with the previous print, affecting overprint quality. 4. After printing, the substrate can only be reeled in. Some reeled substrates then need to be unwound and cut into single sheets at a cutting machine, which is a complex process. Utility Model Content

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a high-stability printing device for solving the above-mentioned problems.

[0004] To this end, the present invention is implemented by adopting the following scheme:

[0005] A high-stability printing device includes an unwinding component, which is characterized in that a first reverse bending component, a double-sided dust removal and suction component, a double-sided corona component, a front traction roller group, an overprint speed regulation traction component, and arranged printing units are sequentially arranged on one side of the unwinding component; a first electric eye for detecting overprint color marks is arranged in the first group of printing units, and the first electric eye can control the action of the overprint speed regulation traction component; a first rear traction roller group, an online visual detection component, a second reverse bending component, a slitting and trimming component, and a second rear traction roller group are sequentially arranged at the discharge end of the last group of printing units; a single sheet cutting knife group, a single paper conveyor belt group and a material receiving table are arranged on one side of the second rear traction roller group; a warp winding roller group, a third rear traction roller group and a winding component are arranged below the second rear traction roller group.

[0006] The first inverted curved assembly includes left and right first inverted curved rollers, with a first inverted curved pressure roller disposed between the two first inverted curved rollers; the second inverted curved assembly includes left and right second inverted curved rollers, with a second inverted curved pressure roller disposed between the two second inverted curved rollers.

[0007] The double-sided dust removal and suction assembly includes a first winding roller and a second winding roller arranged at intervals, a first suction head is provided corresponding to the first winding roller, and a second suction head is provided corresponding to the second winding roller. It also includes a dust removal rubber roller group arranged on one side of the second winding roller.

[0008] The overprint speed regulating traction assembly includes a variable speed traction roller group, which is transmission-connected to a first servo motor. The first electric eye can feed back information to a controller, and the controller can control the rotation speed of the first servo motor to change.

[0009] It also includes an intermediate traction roller group, which is arranged between the front traction roller group and the variable speed traction roller group. The speed of the intermediate traction roller group is consistent with that of the front traction roller group. A tension roller is arranged between the intermediate traction roller group and the variable speed traction roller group. The tension roller is arranged on a movable seat, and the movable seat cooperates with the tension limiting component.

[0010] The tension limiting component is a cylinder, the piston rod of the cylinder is connected to the movable seat, and the air supply direction and air supply pressure of the cylinder remain unchanged during operation.

[0011] Limit sensors are provided at both ends of the moving path of the moving seat, and the limit sensors can control the rotation speed of the front traction roller group to change.

[0012] The slitting and trimming assembly includes an upper slitting wheel and a lower slitting wheel. The upper slitting wheel is provided with a trimming cutter, and the lower slitting wheel is provided with a knife groove that cooperates with the trimming cutter. A waste winding roller is provided on one side of the discharge end of the upper and lower slitting wheels, and a waste suction head is provided near the waste winding roller. The waste suction head is connected to the negative pressure assembly.

[0013] The sheet conveyor belt group includes a primary conveyor belt and a secondary conveyor belt arranged in front and behind. The speed of the primary conveyor belt is faster than that of the secondary conveyor belt, and the position of the primary conveyor belt is higher than that of the secondary conveyor belt.

[0014] The above technical solution is a high-stability printing equipment with a simple structure and reasonable design. The reverse curvature of the printing material is achieved by setting a reverse curvature component, ensuring that the printing material can be kept in a flat state for printing and subsequent cutting, thereby improving the printing quality; the dust on the printing material is removed by setting a double-sided dust removal and suction component, so that the surface of the printing material remains clean, thereby improving the subsequent printing quality; by setting an electric eye and an overprint speed regulation traction component in the printing unit, when the electric eye detects that the overprint color mark is offset, it can feedback information and control the overprint speed regulation traction component to change the traction speed, thereby adjusting the front and rear position of the printing material to ensure accurate overprinting; by separately setting a winding component and a single-sheet cutting knife group, it is possible to realize the winding of the printing material after printing, or directly cut the printing material into a single sheet and stack, convey and collect it through a single-sheet conveyor belt group, enriching its post-printing collection function to meet the different usage needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model has the following drawings:

[0016] Figure 1 It is a side view of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged view of the area pointed by A in the middle;

[0018] Figure 3 for Figure 1 A partial enlarged view of the point where B is pointing;

[0019] Figure 4 This is a view of the tension roller and the movable seat of the utility model;

[0020] Figure 5 for Figure 1 A partial enlarged view of the point where C is pointing;

[0021] Figure 6 for Figure 1 A partial enlarged view of the area where D is pointing. DETAILED DESCRIPTION

[0022] As shown in the figure, the utility model discloses a high-stability printing device, including a unwinding component 1, on one side of the unwinding component 1 are sequentially arranged a first reverse curvature component, a double-sided dust removal and suction component, a double-sided corona component 2, a front traction roller group 3, an overprint speed regulation traction component, and an arranged printing unit 4. The double-sided corona component 2 is a common structure on the market and will not be described in detail. A first electric eye 18 for detecting the overprint color mark is provided in the first group of printing units. The first electric eye 18 can control the action of the overprint speed regulation traction component. A laminating and hot stamping component 35 is provided above the first group of printing units to enrich its functions. The laminating and hot stamping component 35 is a common structure on the market and will not be described in detail. At the discharge end of the last group of printing units, a first rear traction roller group 23, an online visual detection component 36, a second reverse curvature component, a slitting and trimming component, and a second rear traction roller group 30 are sequentially provided. The online visual detection component 36 is a common structure on the market and will not be described in detail. A sheet cutter assembly 31, a sheet conveyor belt assembly, and a receiving platform 37 are provided on one side of the second rear traction roller assembly 30. A warp roller assembly 38, a third rear traction roller assembly 34, and a rewinding assembly 5 are provided below the second rear traction roller assembly 30. Specifically, the first recurving assembly includes left and right first recurving rollers 6, with a first recurving pressure roller 7 provided between the two first recurving rollers 6. When the printing substrate passes through the first recurving rollers 6 and the first recurving pressure roller 7, the recurving of the unwound printing substrate can be achieved, thereby ensuring that the printing substrate is subsequently sent flat to the printing unit for printing. The second recurving assembly includes left and right second recurving rollers 24, with a second recurving pressure roller 25 provided between the two second recurving rollers 24. When the printing substrate passes through the second recurving rollers 24 and the second recurving pressure roller 25, the recurving of the printed substrate can be achieved, ensuring that the printing substrate is subsequently sent flat to the trimming, slitting, and sheet cutting assemblies for cutting. The double-sided dust removal and suction assembly includes a first winding roller 12 and a second winding roller 10, each spaced apart. A first suction head 13 is provided for the first winding roller 12, and a second suction head 11 is provided for the second winding roller 10. The assembly also includes a dust removal rubber roller group 9, which is provided on one side of the second winding roller 10. When the printed material passes through the first and second winding rollers, negative pressure is generated at the first and second suction heads to remove dust from both sides of the printed material. The printed material then passes through the dust removal rubber roller group 9, which picks up any remaining dust that has not been removed, thereby ensuring dust removal from the printed material. In this embodiment, the overprint speed control traction assembly includes a variable speed traction roller group 17, which is transmission-connected to a first servo motor. A first electric eye 18 can provide feedback to a controller, which can control the speed of the first servo motor to change.The machine also includes an intermediate traction roller assembly 14, which is disposed between the front traction roller assembly 3 and the variable-speed traction roller assembly 17. The speed of the intermediate traction roller assembly 14 is consistent with that of the front traction roller assembly 3, ensuring that the traction speed and tension of the printed substrate from the unwinding assembly 1 to the intermediate traction roller assembly 3 are not affected by subsequent changes in the speed of the variable-speed traction roller assembly 17, thereby improving the traction stability in the range from the unwinding assembly 1 to the intermediate traction roller assembly 14. A tension roller 16 is disposed between the intermediate traction roller assembly 14 and the variable-speed traction roller assembly 17. The tension roller 16 is disposed on a movable base 15, which cooperates with a tension limiting assembly, namely a cylinder 19, the piston rod of which is connected to the movable base 15. During operation, the air supply direction and pressure of the cylinder 19 remain constant, so that the tension of the tension roller on the movable base is always consistent with the air supply pressure in the cylinder 19. A slide 20 is connected to the movable base 15, and a slide rail 21 is provided on the frame to cooperate with the slide 20 and guide the movement of the movable base 15. Furthermore, limit sensors 22 are provided at both ends of the moving path of the moving seat 15. The limit sensors 22 can control the rotation speed of the front traction roller group 3 to change. By setting the limit sensors 22, the moving stroke of the moving seat 15 is limited to avoid collision between the moving seat 15 and the tension roller 16 and other components in the equipment. For example, when the limit sensor close to the front traction roller group 3 senses the moving seat 15, it means that the amount of printing material is too small at this time, and the rotation speed of the front traction roller group 3 will be controlled to increase, and the printing material will be added so that the tension roller 16 can move toward the side away from the front traction roller 3. When the limit sensor away from the front traction roller 3 senses the moving seat 15, it means that the amount of printing material is too small at this time, and the rotation speed of the front traction roller group 3 will be controlled to slow down, and the traction amount of the printing material will be reduced, so that the tension roller 16 can move toward the side close to the front traction roller 3. The slitting and trimming assembly includes an upper slitting wheel 27 and a lower slitting wheel 26. The upper slitting wheel 27 is provided with a trimming cutter, and the lower slitting wheel 26 is provided with a knife groove that cooperates with the trimming cutter. A waste winding roller 28 is provided on one side of the discharge end of the upper and lower slitting wheels, and a waste suction head 29 is provided near the waste winding roller 28. The waste suction head is connected to the negative pressure assembly. After the trimming and cutting are completed, the waste edges will be sent to the waste suction head 29 through the waste winding roller 28 to be sucked up. The single-sheet conveyor belt group includes a primary conveyor belt 32 and a secondary conveyor belt 33 arranged in front and back. The speed of the primary conveyor belt 32 is faster than that of the secondary conveyor belt 33, and the position of the primary conveyor belt 32 is higher than that of the secondary conveyor belt 33. The cut single-sheet printed product is first conveyed by the first conveyor belt 32 and then sent to the secondary conveyor belt 33. Since the speed of the secondary conveyor belt is slower, the single-sheet printed products conveyed on the primary conveyor belt will be stacked together front and back, and then sent to the receiving table 37 for collection through the secondary conveyor belt 33.

[0023] The working principle of the present invention is as follows: the printing material is first unwound through the unwinding component 1 and sent to the first recurving component for the first recurving to ensure that it can be transported smoothly in the future. After that, it is sent to the double-sided dust removal and suction component for dust removal, and sent to the double-sided corona component 2 for corona processing. Then it passes through the front traction roller group 3, the middle traction roller group 14, the tension roller 16 and the variable speed traction roller group 17, and then sent to the printing unit 4 for printing. If it is overprint printing at this time, the first electric eye 18 will detect the printed color mark. If it is found that the overprint color mark is offset, it will feedback information and control the speed of the variable speed traction roller group 17 to change, thereby effectively adjusting the position of the printing material, thereby realizing automatic detection of the overprint color mark and automatic offset adjustment. After the printing material passes through multiple groups of printing units and is printed, it will pass through the first rear traction roller group 23, and then be sent to the online visual inspection component 36 for visual inspection of the printing situation, and then be sent to the second recurving component for a second recurving to ensure that the subsequent printed products can be transported and processed flat. After that, the printing material is sent to the trimming and slitting component to cut off the excess waste edges. If it needs to be rolled up and collected, the printed product will pass through the winding roller group 38 and the third rear traction roller group 34, and finally be sent to the winding component 5 for winding and collection. If the printed product needs to be used individually later, the trimmed and slit finished product can be passed through the second rear traction roller group 30, and then sent to the single sheet cutting knife group 31 to cut the finished product into single sheets. Finally, it is stacked and transported to the receiving table 37 through the primary and secondary conveyor belts for stacking and collection.

[0024] The structure of the present invention realizes the reverse curvature of the printing material by arranging a reverse curvature component, ensuring that the printing material can be kept in a flat state for printing and subsequent cutting, thereby improving the printing quality; dust is removed from the printing material by arranging a double-sided dust removal and suction component, so that the surface of the printing material remains clean, thereby improving the subsequent printing quality; an electric eye and an overprint speed regulation traction component are arranged in the printing unit, when the electric eye detects that the overprint color mark is offset, it can feedback information and control the overprint speed regulation traction component to change the traction speed, thereby adjusting the front and rear positions of the printing material to ensure accurate overprinting; by separately arranging a winding component and a single-sheet cutting knife group, it is possible to realize the winding of the printing material after printing, and also to directly cut the printing material into a single sheet and stack, convey and collect it through a single-sheet paper conveyor group, thereby enriching its post-printing collection function and meeting the different usage needs of users.

Claims

1. A high-stability printing device, comprising a reel unwinding assembly (1), characterized in that A first reverse curvature assembly, a double-sided dust removal and air suction assembly, a double-sided corona assembly (2), a front traction roller group (3), an overprint speed regulating traction assembly, and an arranged printing unit (4) are sequentially arranged on one side of the unwinding assembly (1); a first electric eye (18) for detecting an overprint color mark is arranged in the first group of printing units; the first electric eye (18) can control the action of the overprint speed regulating traction assembly; a first rear traction roller group (23), an online visual detection assembly (36), a second reverse curvature assembly, a slitting and trimming assembly, and a second rear traction roller group (30) are sequentially arranged at the discharge end of the last group of printing units; a single sheet cutting knife group (31), a single sheet conveying belt group, and a receiving platform (37) are arranged on one side of the second rear traction roller group (30); and a warp winding roller group (38), a third rear traction roller group (34), and a winding assembly (5) are arranged below the second rear traction roller group (30).

2. A high stability printing device according to claim 1, characterized in that The first inverse curvature assembly comprises first inverse curvature rollers (6) arranged on the left and right, and a first inverse curvature pressure roller (7) is arranged between the two first inverse curvature rollers (6). The second inverse curvature assembly comprises second inverse curvature rollers (24) arranged on the left and right, and a second inverse curvature pressure roller (25) is arranged between the two second inverse curvature rollers (24).

3. A high stability printing device according to claim 1, characterized in that The double-sided dust removal and suction assembly comprises a first winding roller (12) and a second winding roller (10) which are arranged at an interval, a first suction head (13) being arranged corresponding to the first winding roller (12), and a second suction head (11) being arranged corresponding to the second winding roller (10), and further comprises a dust removal rubber roller group (9) arranged on one side of the second winding roller (10).

4. A high stability printing device according to claim 1, characterized in that The overprint speed regulating traction assembly comprises a variable speed traction roller group (17), the variable speed traction roller group (17) is drivingly connected to a first servo motor, the first electric eye (18) can feed back information to a controller, and the controller can control the rotation speed of the first servo motor to change.

5. A high stability printing device according to claim 4, characterized in that The invention also comprises an intermediate traction roller group (14), wherein the intermediate traction roller group (14) is arranged between the front traction roller group (3) and the speed-changing traction roller group (17), and the speed of the intermediate traction roller group (14) is consistent with that of the front traction roller group (3). A tension roller (16) is arranged between the intermediate traction roller group (14) and the speed-changing traction roller group (17), and the tension roller (16) is arranged on a movable seat (15), and the movable seat (15) cooperates with a tension limiting component.

6. A high stability printing device according to claim 5, characterized in that The tension limiting component is a cylinder (19), the piston rod of the cylinder (19) is connected to the movable seat (15), and the air supply direction and air supply pressure of the cylinder (19) remain unchanged during operation.

7. A high stability printing device according to claim 5, characterized in that Limit sensors (22) are provided at both ends of the moving path of the moving seat (15), and the limit sensors (22) can control the rotation speed of the front traction roller group (3) to change.

8. A high stability printing device according to claim 1, characterized in that The slitting and trimming assembly comprises an upper slitting wheel (27) and a lower slitting wheel (26); the upper slitting wheel (27) is provided with a trimming cutter; the lower slitting wheel (26) is provided with a knife groove cooperating with the trimming cutter; a waste winding roller (28) is provided on one side of the discharge end of the upper and lower slitting wheels; a waste suction head (29) is provided near the waste winding roller (28); the waste suction head is connected to the negative pressure assembly.

9. A high stability printing device according to claim 1, characterized in that The single-sheet conveyor belt group comprises a primary conveyor belt (32) and a secondary conveyor belt (33) arranged front and rear, the speed of the primary conveyor belt (32) being faster than the speed of the secondary conveyor belt (33), and the position of the primary conveyor belt (32) being higher than that of the secondary conveyor belt (33).

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