Multi-layer color accurate positioning printing mechanism

Abstract

The utility model discloses a multi-layer color accurate positioning printing mechanism which comprises a base, a bearing table and a printing machine, the bearing table is driven by a driving device to rotate and is arranged on the base, a plurality of carrying plates are circumferentially arranged on the bearing table at equal intervals with a rotating shaft of the bearing table as the axis, and the printing machine is arranged on the bearing table. The multiple printing machines are arranged on the multiple carrying plates in a one-to-one correspondence mode, and positioning mechanisms used for positioning the carrying plates are arranged in the printing machines. According to the utility model, the loading plate and the printing stock are driven to sequentially move into the plurality of printing machines which are respectively used for printing different colors, and the loading plate is positioned through the positioning mechanism and then is printed, so that the positioning accuracy of the printing stock in each printing machine is improved.

Description

Technical Field

[0001] The utility model relates to the field of printing equipment, and particularly relates to a multi-level color precise positioning printing mechanism. Background Art

[0002] The working principle of a screen printing machine is that through one or more screen frames, each frame is equipped with a screen with a specific pattern. Ink is squeezed onto the substrate through the opening part of the screen to form a pattern. Each color requires an independent screen, and for multi-color printing, multiple screens are needed to print sequentially or simultaneously.

[0003] Existing multi-color screen printing machines usually print on the substrate by driving multiple screens to move or driving the substrate to move under multiple screens. As the fineness of screen printing is getting higher and higher, higher precision is required for the positioning between multiple screens and the substrate during multi-color printing. Existing multi-color screen printing machines usually use a lead screw motor to drive the screen or the substrate to move, and the positioning precision mainly depends on the precise control of the rotation angle of the lead screw motor. The internal and installation structures of high-precision lead screw motors are complex, and there is a possibility of mechanical failures or positioning deviations in the lead screw motor after long-term operation, resulting in a decrease in positioning accuracy and thus affecting the printing quality. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a multi-level color precise positioning printing mechanism. This mechanism drives the carrier plate and the substrate to move into multiple printing machines respectively used for printing different colors in sequence, and positions the carrier plate through a positioning mechanism before printing, thereby improving the positioning accuracy of the substrate in each printing machine.

[0005] The technical solution adopted by the utility model to solve the above problems is as follows:

[0006] A multi-level color precise positioning printing mechanism includes a base, a carrier table, and printing machines. The carrier table is rotationally arranged on the base through a driving device, and a plurality of carrier plates are arranged on the carrier table at equal circumferential intervals with the rotation axis of the carrier table as the axis. A plurality of printing machines are provided and are respectively arranged corresponding to the plurality of carrier plates one by one. A positioning mechanism for positioning the position of the carrier plate is arranged in the printing machine.

[0007] In the above technical solution, preferably, the printing machine includes a frame, a printing head, and a support table. The printing head is driven to move on the frame through a three-axis linear guide rail, and the support table is arranged on the frame and is arranged below the moving path of the carrier plate.

[0008] In the above technical solution, preferably, the positioning mechanism is arranged in the frame on the lower side of the support table. The positioning mechanism includes a baffle and a triggering mechanism. The baffle is arranged on the left side of the support table. The baffle moves onto the moving path of the carrier plate and resets through the triggering mechanism. The carrier plate is slidably arranged left and right on the object bearing table.

[0009] In the above technical solution, preferably, the triggering mechanism includes a guide rail and a rotating rod. The guide rail is arranged under the printing head and above the baffle. Matching sliding inclined surfaces are arranged on both the guide rail and the baffle. The inclined surface is in a state where the front side is high and the rear side is low. A connecting rod is rotatably arranged in the frame under the support table in a damped manner. The baffle is fixed to the left end of the connecting rod. The rotating rod is rotatably arranged at the right end of the connecting rod. The rotating rod is in an inclined state where the front side is low and the rear side is high.

[0010] In the above technical solution, preferably, magnetic components that attract each other to drive the connecting rod to rotate clockwise are arranged on the left half of the connecting rod and in the frame. A tension spring that drives the connecting rod to rotate counterclockwise is arranged between the right half of the connecting rod and the frame.

[0011] Compared with the prior art, the present invention has the following advantages and effects:

[0012] Therefore, in the present invention, the driving device drives the object bearing table to rotate, thereby driving the carrier plate and the printing object to move into multiple printing machines in sequence. After the carrier plate is positioned by the positioning mechanism in the printing machine, printing is performed using the printing machine. Different colors are printed by multiple printing machines respectively, so as to print a pattern with multiple colors on the printing object, thereby improving the positioning accuracy of the carrier plate and the printing object in each printing machine. Therefore, the printing quality of the multi-color screen printing machine can be improved. Description of the Drawings

[0013] Figure 1 is the overall top view of the multi-level color precise positioning printing mechanism of the embodiment of the present invention.

[0014] Figure 2 is Figure 1 the front view of the printing machine in

[0015] Figure 3 is Figure 2 the initial state diagram of the baffle and the triggering mechanism in

[0016] Figure 4 is Figure 2 the left cross-sectional view of

[0017] Figure 5 is Figure 2 the right view of

[0018] Among them, there are a base 1, a material-carrying platform 11, a carrier plate 12, a printing machine 2, a frame 21, a printing head 22, a support platform 23, a three-axis linear guide rail 24, a first track 25, a second track 26, a third track 27, a wire mesh 28, a squeegee 29, a positioning mechanism 3, a baffle 31, a triggering mechanism 32, a guide rail 33, a rotating rod 34, an inclined surface 35, a connecting rod 36, a magnetic component 37, and a tension spring 38. Specific embodiments

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, and the present invention is not limited to the following embodiments.

[0020] See Figures 1-5 , in this embodiment, a multi-level color precise positioning printing mechanism includes a base 1, a material-carrying platform 11, and a printing machine 2. The material-carrying platform 11 is rotationally arranged on the base 1 through a driving device. A plurality of carrier plates 12 are arranged on the material-carrying platform 11 at equal circumferential intervals with the rotation axis of the material-carrying platform 11 as the axis. A plurality of printing machines 2 are provided and are respectively arranged at a plurality of carrier plates 12 in a one-to-one correspondence. A positioning mechanism 3 for positioning the position of the carrier plate 12 is arranged in the printing machine 2.

[0021] In the present invention, the printing substrates are placed on the carrier plates 12 one by one. The driving device (such as a stepping motor) drives the material-carrying platform 11 to rotate, so that the carrier plates 12 move into the corresponding printing machines 2. After the carrier plates 12 move into the printing area in the printing machines 2, the positioning mechanism 3 in the printing machines 2 positions the positions of the carrier plates 12, and then the printing machines 2 are used to print the patterns on the printing substrates. After the printing is completed, the material-carrying platform 11 is driven to rotate to drive the carrier plates 12 and the printing substrates to move to the next printing machine 2 for printing. The above steps are repeated until the printing substrates complete the printing operations in a plurality of printing machines 2. Different colors are printed by a plurality of printing machines 2 respectively, so as to realize printing patterns of multiple colors on the printing substrates.

[0022] Therefore, in the present invention, the driving device drives the material-carrying platform 11 to rotate, so as to drive the carrier plates 12 and the printing substrates to move into a plurality of printing machines 2 in sequence. After the carrier plates 12 are positioned by the positioning mechanism 3, printing is performed, so as to improve the positioning accuracy of the carrier plates 12 and the printing substrates in each printing machine 2. Therefore, the printing quality of the multi-color screen printing machine 2 can be improved.

[0023] See Figure 2 , the printing machine 2 includes a frame 21, a printing head 22, and a support platform 23. The printing head 22 is driven to move on the frame 21 through a three-axis linear guide rail 24. The support platform 23 is arranged on the frame 21 and is arranged on the lower side of the moving path of the carrier plate 12.

[0024] In this embodiment, the first rail 25 in the three-axis linear guide rail 24 is fixed on the frame, the second rail 26 is slidably arranged back and forth on the first rail 25, the third rail 27 is slidably arranged up and down on the second rail 26, the screen 28 in the printing head 22 is fixed on the third rail 27, and the squeegee 29 in the printing head 22 is slidably arranged left and right on the third rail 27.

[0025] The first rail 25 and the second rail 26 in the three-axis linear guide rail 24 drive the entire printing head 22 to move in the front-back and up-down positions, so that the screen 28 in the printing head 22 moves and fits onto the printing substrate, facilitating the control of the position of the printing head 22 corresponding to the position of the printing substrate. Then, the left-right movement of the squeegee 29 in the printing head 22 is driven by the third rail 27 to achieve screen printing. The support table 23 supports the carrier plate 12, reducing the situation where the printing head 22 presses the carrier plate 12 downward when it fits onto the printing substrate, resulting in a change in the position of the printing substrate and thus causing the printed pattern to be deformed.

[0026] See Figure 2 、 Figure 3 As shown in FIGS.

[0027] In this embodiment, the driving device drives the object carrier 11 to rotate counterclockwise. After the carrier plate 12 enters the printing area inside the printing machine 2 from the right side of the printing machine 2, the driving device stops operating, and the position of the carrier plate 12 is roughly positioned. By arranging a baffle 31 on the left side of the support table 23, when the carrier plate 12 moves into the printing machine 2, the trigger mechanism 32 causes the baffle 31 to move upward onto the moving path of the carrier plate 12. When the carrier plate 12 moves to the printing position, its left side surface abuts against the right side surface of the baffle 31, so that the position of the carrier plate 12 can be accurately positioned by the baffle 31, improving the positioning accuracy of screen printing. And the trigger mechanism 32 can be used again to cause the baffle 31 to move downward and move away from the moving path of the carrier plate 12 to reset. Thus, after printing is completed, the carrier plate 12 can be removed from this printing machine 2 under the action of the driving device and enter the next printing machine 2 or the next working station. Therefore, while ensuring that the carrier plate 12 can move in each printing machine 2, automatic positioning of the carrier plate 12 is achieved, improving the automation degree of the present utility model.

[0028] See Figures 2-5, the trigger mechanism 32 includes a guide rail 33 and a rotating rod 34. The guide rail 33 is arranged on the lower side of the print head 22 and above the baffle 31. The guide rail 33 is fixed on the second track 26. Both the guide rail 33 and the baffle 31 are provided with cooperating sliding inclined surfaces 35. The inclined surfaces 35 are in a state where the front side is high and the rear side is low. Inside the frame 21 below the support table 23, a connecting rod 36 is rotatably arranged with damping. The baffle 31 is fixed to the left end of the connecting rod 36. The rotating rod 34 is rotatably arranged at the right end of the connecting rod 36. The rotating rod 34 is in an inclined state where the front side is low and the rear side is high.

[0029] In the initial state, the rotating rod 34 is located on the moving path of the carrier plate 12, and the baffle 31 is located inside the frame 21 and not on the moving path of the carrier plate 12 (as shown in Figure 3 ). When the carrier plate 12 enters the printing machine 2 from the right side of the printing machine 2 under the action of the driving device, the carrier plate 12 first contacts the front end of the rotating rod 34. When the carrier plate 12 continues to move, it can press down the rotating rod 34 through the inclined state of the rotating rod 34. The rotating rod 34 can rotate when contacting the carrier plate 12, reducing the friction force when contacting the carrier plate 12 from hindering the movement of the carrier plate 12, and at the same time reducing the frictional wear between the rotating rod 34 and the carrier plate 12. The carrier plate 12 pressing the rotating rod 34 causes the connecting rod 36 to rotate clockwise, and the rotating rod 34 moves into the frame 21. At the same time, the baffle 31 moves upward to the moving path of the carrier plate 12 (as shown in Figure 2 ). Since the carrier plate 12 can slide left and right within a certain range, the carrier plate 12 only fits with the baffle 31, and the force exerted by the carrier plate 12 on the baffle 31 is small and will not drive the baffle 31 to move downward. Then, the print head 22 is driven to move. When the print head 22 moves forward along the first track 25, the guide rail 33 on the lower side of the print head 22 and the upper side of the baffle 31 slide against each other. The guide rail 33 presses down the baffle 31 through the inclined surfaces 35 on the guide rail 33 and the baffle 31, causing the baffle 31 to move into the frame 21, that is, to move away from the moving path of the carrier plate 12. At this time, the left side of the carrier plate 12 abuts against the guide rail 33, so that the position of the carrier plate 12 can still be positioned. And since the connecting rod 36 rotates counterclockwise when the baffle 31 moves downward, the rotating rod 34 moves upward and just abuts against the right side of the carrier plate 12. Thus, under the clamping action of the guide rail 33 and the rotating rod 34, the carrier plate 12 is prevented from swinging, thereby realizing the precise positioning of the carrier plate 12. After printing is completed in the printing machine 2, the print head 22 moves backward, and the guide rail 33 moves away from the moving path of the carrier plate 12, so that the carrier plate 12 can be removed from the printing machine 2.

[0030] See Figure 2 、 Figure 3, magnetic components 37 that magnetically attract each other and drive the connecting rod 36 to rotate clockwise are provided on both the left half of the connecting rod 36 and inside the frame 21, and a tension spring 38 that drives the connecting rod 36 to rotate counterclockwise is provided between the right half of the connecting rod 36 and the frame 21.

[0031] When the connecting rod 36 rotates clockwise to move the baffle 31 upward, the magnetic components 37 between the connecting rod 36 and the frame 21 approach each other, and the magnetic attraction force increases. Therefore, after the connecting rod 36 rotates a certain angle, it can automatically rotate clockwise under the action of the magnetic components 37 to move the baffle 31 to the moving path of the load plate 12, reducing the situation where the load plate 12 pushes the baffle 31 downward when the damping force between the connecting rod 36 and the frame 21 is small. At this time, the tension spring 38 is stretched; when the connecting rod 36 rotates clockwise to move the rotating rod 34 upward, the magnetic components 37 between the connecting rod 36 and the frame 21 gradually move away, and the magnetic attraction weakens. Therefore, after the connecting rod 36 rotates a certain angle, it can automatically rotate counterclockwise under the action of the tension spring 38 to move the rotating rod 34 to the moving path of the load plate 12, reducing the situation where the damping force between the connecting rod 36 and the frame 21 is small and the rotating rod 34 moves away from the moving path of the load plate 12 under the action of the magnetic components 37, ensuring the normal use of the present utility model.

[0032] The above content described in this specification is only an example of the present utility model. Those skilled in the technical field to which the present utility model belongs can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the content of this specification of the present utility model or exceed the scope defined by this claim book, they should all belong to the protection scope of the present utility model.

Claims

1. A multi-level color precise positioning printing mechanism, characterized in that: It includes a base, a material-carrying platform, and a printing machine. The material-carrying platform is rotationally arranged on the base through a driving device. A plurality of loading plates are arranged on the material-carrying platform at equal circumferential intervals with the rotation axis of the material-carrying platform as the axis. A plurality of printing machines are provided and are respectively arranged at the positions corresponding to the plurality of loading plates one by one. A positioning mechanism for positioning the position of the loading plate is arranged in the printing machine.

2. The multi-level color precise positioning printing mechanism according to claim 1, wherein: The printing machine includes a frame, a printing head, and a support table. The printing head is driven to move on the frame through a three-axis linear guide rail. The support table is arranged on the frame and is arranged on the lower side of the moving path of the loading plate.

3. The multi-level color precise positioning printing mechanism according to claim 1, characterized in that: The positioning mechanism is arranged in the frame on the lower side of the support table. The positioning mechanism includes a baffle and a triggering mechanism. The baffle is arranged on the left side of the support table. The baffle moves onto and resets to the moving path of the loading plate through the triggering mechanism. The loading plate is slidably arranged left and right on the material-carrying platform.

4. The multi-level color precise positioning printing mechanism according to claim 3, characterized in that: The triggering mechanism includes a guide rail and a rotating rod. The guide rail is arranged on the lower side of the printing head and above the baffle. Matching sliding inclined surfaces are arranged on both the guide rail and the baffle. The inclined surface is in a state where the front side is high and the rear side is low. A connecting rod is rotatably arranged in the frame below the support table in a damped manner. The baffle is fixed to the left end of the connecting rod. The rotating rod is rotatably arranged at the right end of the connecting rod. The rotating rod is in an inclined state where the front side is low and the rear side is high.

5. The multi-level color precise positioning printing mechanism according to claim 4, characterized in that: Mutually magnetically attracting magnetic components for driving the connecting rod to rotate clockwise are arranged on the left half of the connecting rod and in the frame. A tension spring for driving the connecting rod to rotate counterclockwise is arranged between the right half of the connecting rod and the frame.

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