Split type asynchronous double-sided printing device and printing method

Abstract

The split type asynchronous double-sided printing device comprises a feeding roller and a receiving roller, a first printing platform and a second printing platform are sequentially arranged between the feeding roller and the receiving roller, a plurality of guide rollers are arranged at the feeding end of the first printing platform, a first driving roller is arranged at the discharging end of the first printing platform, and a second driving roller is arranged at the discharging end of the second printing platform. An adjustable driving roller is arranged between the first driving roller and the second printing platform; a guide roller is arranged at the feeding end of the second printing platform, and a second driving roller is arranged at the discharging end of the second printing platform. The driving rollers are arranged behind the first printing platform and the second printing platform correspondingly, then the adjustable driving roller is arranged between the first driving roller and the second printing platform, material storage is conducted through the adjustable driving roller, and the tensioning degree and the positions on the two platforms can be effectively controlled.

Description

TECHNICAL FIELD

[0001] The application relates to a split type asynchronous double-sided printing device and a printing method. BACKGROUND

[0002] When double-sided printing of flexible fabric is performed, there are generally two ways to ensure alignment of the front and back surfaces. One way is to control the fabric between the two printing platforms to be in the same tension state and have consistent length and distance, which requires extremely high structure and control precision and is prone to misalignment in actual use. Another way is to perform real-time identification of a pattern after printing on the first platform, and then perform printing on the second platform, which can achieve relatively accurate pattern alignment, but requires the addition of an identification device, which greatly increases the investment in equipment. The two control methods have a problem of tension control of the flexible fabric. The fabric is integrated and cannot maintain a constant tension during printing, especially under the printing platform. Therefore, it is necessary to set an effective adjusting mechanism between the two platforms to avoid the above problems. SUMMARY

[0003] To solve the above problems, the application provides a split type asynchronous double-sided printing device, which comprises a feeding roller and a collecting roller, a first printing platform and a second printing platform are sequentially arranged between the feeding roller and the collecting roller, a plurality of fabric guide rollers are arranged at the feeding end of the first printing platform, a first driving roller is arranged at the discharging end of the first printing platform, and an adjustable driving roller is arranged between the first driving roller and the second printing platform; a guide roller is arranged at the feeding end of the second printing platform, and a second driving roller is arranged at the discharging end of the second printing platform; the adjustable driving roller can move up and down to change the length of the printing material between the first driving roller, the adjustable driving roller and the guide roller according to the multiple of the printing step length of the first printing platform. The application sets a driving roller after the first printing platform and the second printing platform, sets an adjustable driving roller between the first driving roller and the second printing platform, and accumulates the material through the adjustable driving roller, so that the tension and position on the two platforms can be effectively controlled.

[0004] Preferably, one side of the first driving roller is provided with a first fabric clamping roller arranged in cooperation; and one side of the second driving roller is provided with a second fabric clamping roller arranged in cooperation.

[0005] Preferably, the adjustable driving roller comprises a roller body and a matched moving track, positioning sliding plates are arranged on both sides of the roller body, moving blocks matched with the moving track are arranged on the positioning sliding plates, the roller body comprises a roller rotating shaft arranged through the positioning sliding plates, driving gears are arranged on both sides of the roller rotating shaft, the roller rotating shaft is connected with a roller motor, a freely rotatable roller sleeve is arranged on the roller rotating shaft between the positioning sliding plates, and driving racks matched with the driving gears are arranged on the moving track. The roller body supporting the printing material and the driving gears driving the up and down movement of the roller body are integrally arranged, so that the whole body can feed the material while moving up and down to change the length of the printing material in the whole storage device, the whole body is integrally arranged, the cost is lower, and the storage effect is better.

[0006] Preferably, the driving gears are arranged below the roller body, and the moving blocks are arranged on the side of the driving gears.

[0007] Preferably, a T-shaped sliding groove is arranged in the middle of the moving block, and a T-shaped sliding rod matched with the T-shaped sliding groove is arranged on the moving track.

[0008] Preferably, a plurality of auxiliary roller bearings are fixedly arranged on the outer side of the roller rotating shaft corresponding to the position of the roller sleeve, and the outer side of the auxiliary roller bearings is fixedly connected with the inner wall of the roller sleeve.

[0009] In another aspect, the application also discloses a printing method of the split type different step double-sided printing device, comprising the following steps: The printing material is led out from the feeding roller, sequentially passes through the guide roller, the first printing platform, the first driving roller, the adjustable driving roller, the guide roller, the second printing platform, the second driving roller, and is wound by the collecting roller; The pre-operation parameter determination is performed in the following manner: The first printing platform first performs the first printing, the first printing platform printing step length is L, then the first driving roller rotates to drive the printing material to enter the first printing platform, and the roller body of the adjustable driving roller moves downward while rotating to make the length of the printing material between the first driving roller, the adjustable driving roller and the guide roller increase by n*L, wherein n is a positive integer; Then, the second driving roller on one side of the second printing platform pulls the printing material while the roller body of the adjustable driving roller moves upward while rotating to make the length of the printing material between the first driving roller, the adjustable driving roller and the guide roller decrease by L each time, finally decrease by n*L, and the second printing is performed; The printed material after the second printing is rolled up by the material receiving roller. The application determines the positioning location in advance through the relative position relationship among the first driving roller, the material roller body and the guide roller, and obtains the calculation basis of the linear speed and the motion speed control of the material roller body based on the process of determining each position. In this way, stable operation can be achieved, the printed material can be prevented from being pulled, and the first printing platform and the second printing platform can be balanced as much as possible during the plotter process. Since the moving distance adopts the multiple control method, the alignment of the front and back surfaces can also be ensured. It should be noted that the driving motor described in the application represents the driving force provided, and is not specific to a certain device.

[0010] Preferably, the number of positioning locations is determined according to n, and the positioning locations are determined in the following manner: The initial position of the material roller body is determined to obtain the length L of the printed material between the material roller body and the first driving roller 10 , and the length L of the printed material between the material roller body and the guide roller 20 . The feeding distance Y of the material roller body at the i-th position is obtained i in relation to L 1i and L 2i , where L 1i refers to the length of the printed material between the i-th positioning location and the first driving roller, and L 2i refers to the length of the printed material between the i-th positioning location and the second driving roller. The first positioning location and the feeding distance Y1 are determined, and when the first positioning location, (L 11 +L 21 ) - (L 10 +L 20 ) = 1*L. The second positioning location and the feeding distance Y2 are determined, and when the second positioning location, (L 12 +L 22 ) - (L 10 +L 20 ) = 2*L. This is repeated until the n-th positioning location is determined.

[0011] Preferably, the motion time T of the material roller body between adjacent positioning locations is determined according to the printed material, and the motion time T is divided into acceleration time T1, uniform motion time T2 and brake time T3.

[0012] Preferably, the material roller body is a tension balance roller.

[0013] The application can bring the following beneficial effects: 1. The application sets up a driving roller behind the first printing platform and the second printing platform respectively, and then sets up an adjustable driving roller between the first driving roller and the second printing platform, and stores materials through the adjustable driving roller, which can effectively control the tension and position on the two platforms.

[0014] 2. The application sets up the material roller body supporting the printing material and the driving gear driving the up and down action in one, so that the whole can feed the material while also performing up and down action, driving the length change of the printing material in the whole storage device, integrated setting, lower cost, and better storage effect.

[0015] 3. The application determines the pre-positioning position through the relative position relationship between the first driving roller, the material roller body and the guide roller, and obtains the calculation basis of the linear speed and motion speed control of the material roller body based on the position determination process, which can achieve stable operation and avoid pulling the printing material, and as much as possible to ensure that the first printing platform and the second printing platform have balanced tension during the drawing process. Since the moving distance adopts the multiple control method, it can also ensure the alignment of the front and back surfaces. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the application, and form a part of the application. The schematic embodiments of the application and their descriptions are used to explain the application, and do not constitute an improper limitation on the application. In the drawings: Figure 1 It is a structural schematic diagram of the application.

[0017] Figure 2 It is a structural schematic diagram of the adjustable driving roller.

[0018] Figure 3 It is a side view of Figure 2

[0019] Figure 4 It is a principle schematic diagram for determining the specific positioning position. DETAILED DESCRIPTION

[0020] In order to clearly explain the technical characteristics of the present application, the application will be described in detail below through specific embodiments, and in conjunction with the drawings.

[0021] For structural aspects, such as Figures 1-3 ​As shown, a split type asynchronous double-sided printing device includes a feeding roller 1 and a collecting roller 2, a first printing platform 3 and a second printing platform 4 are sequentially arranged between the feeding roller 1 and the collecting roller 2, a plurality of guide rollers 5 are arranged at the feeding end of the first printing platform 3, a first driving roller 6 is arranged at the discharging end of the first printing platform 3, and an adjustable driving roller 7 is arranged between the first driving roller 6 and the second printing platform 4; a guide roller 21 is arranged at the feeding end of the second printing platform 4, and a second driving roller 8 is arranged at the discharging end of the second printing platform 4; the adjustable driving roller 7 can move up and down to change the length of the printing material between the first driving roller 6, the adjustable driving roller 7 and the guide roller 21 according to the multiple of the printing step length of the first printing platform 3.

[0022] A first clamp roller 9 is arranged at one side of the first driving roller 6 in a matching manner; a second clamp roller 10 is arranged at one side of the second driving roller 8 in a matching manner. The adjustable driving roller 7 includes a roller body 11 and a matching movable track 12, positioning sliding plates 13 are arranged at both sides of the roller body 11, movable sliding blocks 14 are arranged on the positioning sliding plates 13 in a matching manner with the movable track 12, the roller body 11 includes a roller rotating shaft 22 arranged through the positioning sliding plates 13, driving gears 25 are arranged at both sides of the roller rotating shaft 22, the roller rotating shaft 22 is connected with a roller motor 15 in a power connection manner, a freely rotatable roller sleeve 23 is arranged on the roller rotating shaft 22 between the positioning sliding plates 13; a driving rack 16 is arranged on the movable track 12 in a meshing manner with the driving gears 25. A plurality of auxiliary roller bearings 24 are fixedly sleeved at the outer side of the roller rotating shaft 22 corresponding to the position of the roller sleeve 23, and the outer side of the auxiliary roller bearings 24 is fixedly connected with the inner wall of the roller sleeve 23.

[0023] The driving gears 25 are arranged below the roller body 11; the movable sliding blocks 17 are arranged at the side of the driving gears 25. A T-shaped sliding groove 18 is arranged at the middle part of the movable sliding blocks 17, and a T-shaped sliding rod is arranged on the movable track 12 in a matching manner with the T-shaped sliding groove.

[0024] For the specific operation method, the following steps are included: The printing material is guided out from the feeding roller 1, sequentially passes through the guide rollers 5, the first printing platform 3, the first driving roller 6, the adjustable driving roller 7, the guide roller 21, the second printing platform 4, the second driving roller 8, and is collected by the collecting roller 2; The pre-operation parameter determination is performed in the following manner: The first printing platform 3 first performs the first printing, and the first printing platform 3 has a printing step length L. Then, the first driving roller 6 rotates to drive the printing material into the first printing platform 3, and the material roller body 11 of the adjustable driving roller 7 rotates while moving downward, so that the length of the printing material between the first driving roller 6, the adjustable driving roller 7 and the guide roller 21 increases by n*L, where n is a positive integer. Then, the second driving roller 8 on one side of the second printing platform 4 pulls the printing material, and the material roller body 11 of the adjustable driving roller 7 rotates while moving upward, so that the length of the printing material between the first driving roller 6, the adjustable driving roller 7 and the guide roller 21 decreases by L each time, and finally decreases by n*L, to perform the second printing. The printing material after the second printing is wound by the material collecting roller 2.

[0025] The number of positioning positions is determined according to n, and the positioning positions are determined as follows: As shown in Figure 4 , the initial position of the material roller body is determined, and the length L 10 of the printing material between the material roller body and the first driving roller is obtained 20 ; The relationship between the feeding distance Y i of the material roller body at the i-th position and L 1i and L 2i is obtained, where L 1i represents the length of the printing material between the i-th positioning position and the first driving roller, and L 2i represents the length of the printing material between the i-th positioning position and the second driving roller. The first positioning position and the feeding distance Y1 are determined, and at the first positioning position, (L 11 +L 21 ) - (L 10 +L 20 ) = 1*L. The second positioning position and the feeding distance Y2 are determined, and at the second positioning position, (L 12 +L 22 ) - (L 10 +L 20 ) = 2*L. This is repeated until the n-th positioning position is determined.

[0026] According to the printing material, the movement time T of the material roller body between adjacent positioning positions is determined, and the movement time T is divided into acceleration time T1, uniform motion time T2 and brake time T3.

[0027] The material roller body is a tension equalizing roller.

[0028] The determined positioning position and the movement speed of the printing material are acquired, and then control is performed according to the above parameters.

[0029] The above only is the embodiment of the present application, and is not used to limit the present application. For the person skilled in the art, the present application can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the scope of claims of the present application.

Claims

1. A split asynchronous duplex printing apparatus, characterized by: The first printing platform and the second printing platform are sequentially arranged between the feeding roller and the collecting roller, a plurality of guide rollers are arranged at the feeding end of the first printing platform, a first driving roller is arranged at the discharging end of the first printing platform, and an adjustable driving roller is arranged between the first driving roller and the second printing platform; a guide roller is arranged at the feeding end of the second printing platform, and a second driving roller is arranged at the discharging end of the second printing platform. The adjustable driving roller can act up and down to change the length of the printing material between the first driving roller, the adjustable driving roller and the guide roller according to the multiple of the printing step length of the first printing platform.

2. The split asynchronous duplex printing apparatus of claim 1, wherein: One side of the first driving roller is provided with a first cloth clamping roller arranged in cooperation, and one side of the second driving roller is provided with a second cloth clamping roller arranged in cooperation.

3. The split asynchronous duplex printing apparatus of claim 1, wherein: The adjustable driving roller comprises a material roller body and a matching movable track, positioning sliding plates are arranged at both sides of the material roller body, movable sliding blocks matched with the movable track are arranged on the positioning sliding plates, the material roller body comprises a material roller rotating shaft arranged through the positioning sliding plates, driving gears are arranged at both sides of the material roller rotating shaft, the material roller rotating shaft is connected with a material roller motor, a freely rotatable material roller sleeve is arranged on the material roller rotating shaft between the positioning sliding plates, and a driving rack matched with the driving gears is arranged on the movable track.

4. The split asynchronous duplex printing apparatus of claim 3, wherein: The movable sliding blocks are arranged on the side of the driving gears.

5. The split asynchronous duplex printing apparatus of claim 3, wherein: A T-shaped sliding groove is arranged in the middle of the movable sliding blocks, and a T-shaped sliding rod matched with the T-shaped sliding groove is arranged on the movable track.

6. The split asynchronous duplex printing apparatus of claim 3, wherein: A plurality of auxiliary material roller bearings are fixedly sleeved on the outer side of the material roller rotating shaft corresponding to the position of the material roller sleeve, and the outer side of the auxiliary material roller bearings is fixedly connected with the inner wall of the material roller sleeve.

7. A method of printing with the split-type different-synchronous double-sided printing device according to claim 3, characterized by: The method comprises the following steps: The printing material is introduced from the feeding roller, sequentially passes through the guide rollers, the first printing platform, the first driving roller, the adjustable driving roller, the guide roller, the second printing platform and the second driving roller, and is wound by the collecting roller; The pre-operation parameter determination is performed in the following manner: The first printing platform first performs first printing, the printing step length of the first printing platform is L, then the first driving roller rotates to drive the printing material into the first printing platform, and the material roller body of the adjustable driving roller rotates while acting downward, so that the length of the printing material between the first driving roller, the adjustable driving roller and the guide roller increases by n*L, wherein n is a positive integer; Then, while the second driving roller on one side of the second printing platform pulls the printing material, the material roller body of the adjustable driving roller rotates while acting upward, so that the length of the printing material between the first driving roller, the adjustable driving roller and the guide roller decreases by L each time, finally decreases by n*L, and second printing is performed; The printing material after the second printing is wound by the collecting roller.

8. A printing method as claimed in claim 7, characterized in that: The number of positioning positions is determined according to n, and the positioning positions are determined in the following manner: determining an initial position of the supply roll body, obtaining a length L of the print material between the supply roll body and the first drive roll 10 , a length L of the print material between the supply roll body and the guide roll 20 ; the feed distance Y of the feed roller body at the i-th position i L 1i and L 2i , wherein L 1i denotes the length of the print material between the i-th positioning position and the first active roller, wherein L 2i denotes the length of the print material between the i-th positioning position and the second active roller; determining a first positioning position and a feed distance Y1, at which the first positioning position is reached, (L 11 +L 21 ) - (L 10 +L 20 ) = 1*L; determining a second positioning position and a feed distance Y2, at which the second positioning position, (L 12 +L 22 ) - (L 10 +L 20 ) = 2*L; This is repeated until the nth positioning position is determined.

9. A printing method as claimed in claim 8, characterized in that: According to the printing material, a movement time T of the material roller body between adjacent positioning positions is determined, and the movement time T is divided into an acceleration time T1, a uniform motion time T2 and a braking time T3.

10. A printing method as claimed in claim 8, characterized in that: The material roller body is a tension balance roller.

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