Printer with temporary paper feeding structure

Abstract

The present invention relates to a printer with a temporary paper feeding structure, comprising a frame assembly and a printing paper feeding structure, a temporary paper feeding structure, a printing paper feeding structure, a temporary paper output structure and a printing paper output structure arranged on the frame assembly; the printing paper feeding structure, the temporary paper feeding structure, the printing paper feeding structure, the temporary paper output structure and the printing paper output structure are arranged in sequence along the paper feeding direction, the temporary paper feeding structure receives the medium returned by the printing paper feeding structure and temporarily stores it, the temporary paper output structure receives the medium transported by the printing paper feeding structure and temporarily stores it, and then transports it to the printing paper output structure. When the color printing medium of the present invention is returned, the returned medium is temporarily stored in the temporary paper feeding structure, so as to reduce the wrinkles of the medium and reduce the scrap rate.

Description

Technical Field

[0001] The invention relates to a printer, in particular to a printer with a temporary paper feeding structure. Background Art

[0002] Colorful printing technology has the advantages of fast printing speed and long shelf life of printed products, and is widely used in industries such as car logos, billboards, and posters.

[0003] In the existing printing technology using film as the medium, when the true color printing scheme is color-registered, after the printing medium has printed the previous color, it needs to be returned to the front of the printer for the second color registration. At this time, the print roller reverses to make the medium retract, and the film also reverses to pull the medium back. In this process, the print roller and the film need to ensure very precise consistency. Any slight error will easily lead to risks such as deviation and slant, media wrinkles, etc., resulting in inaccurate color registration and high scrap rate.

[0004] Therefore, those skilled in the art are committed to developing a printer with a temporary paper feeding structure. When the color printing medium is ejected, the ejected medium is temporarily stored in the temporary paper feeding structure to reduce medium wrinkles and reduce the scrap rate. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a printer with a temporary paper feeding structure. When the color printing medium is fed back, the returned medium is temporarily stored in the temporary paper feeding structure to reduce medium wrinkles and reduce the scrap rate.

[0006] The technical solution of the present invention to solve the above technical problem is as follows: A printer with a temporary paper feeding structure, comprising

[0007] A frame assembly and a printing paper feed structure, a temporary paper feed structure, a printing paper feed structure, a temporary paper output structure and a printing paper output structure arranged on the frame assembly;

[0008] The printing paper feed structure, the temporary paper feed structure, the printing paper feed structure, the temporary paper output structure and the printing paper output structure are arranged in sequence along the paper feed direction. The temporary paper feed structure receives the medium returned by the printing paper feed structure and temporarily stores it. The temporary paper output structure receives the medium transported by the printing paper feed structure and temporarily stores it, and then transports it to the printing paper output structure.

[0009] The beneficial effects of the present invention are as follows: the color printing medium is sequentially printed from the printing paper feed structure, the temporary paper feed structure, and the printing paper feed structure; after printing the first color, the printing paper feed structure reversely transports the printing medium to the temporary paper feed structure for temporary storage; when printing the second color, the temporary paper feed structure transports the printing medium to the printing paper feed structure, so that the printing roller and the film are kept consistent, thus preventing deviation and skewing, reducing the risk of wrinkling the color printing medium, and thus improving the printing quality of the color printing.

[0010] Based on the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the temporary paper feeding structure comprises an active paper feeding wheel, a temporary upper channel and a temporary rubbing wheel which are sequentially arranged along the paper feeding direction;

[0012] The printing medium passes between the temporary storage upper channel and the temporary storage wheel and is transported to the printing paper feeding structure. When the printing paper feeding structure transports in the reverse direction, the temporary storage upper channel and the temporary storage wheel are moved away from the printing paper feeding structure under the action of the moving mechanism and the medium is temporarily stored.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that the printing medium passes through the temporary storage upper channel and the temporary storage wheel in sequence and is then printed in the paper feeding and printing structure. After the first color is printed, the paper feeding and printing structure transports it in the reverse direction. At the same time, the temporary storage upper channel and the temporary storage wheel are moved away from the paper feeding and printing structure under the action of the moving mechanism, so that the printing medium between the temporary storage wheel and the printing paper feeding structure gradually increases, thereby achieving the purpose of temporarily storing the printing medium, and there is no need to directly pull back the printing medium, thereby avoiding the printing medium from deviating or slanting and affecting the printing quality.

[0014] Furthermore, the outer periphery of the active paper feed wheel is abutted against a paper feed floating wheel, and the paper feed floating wheel is radially provided with a paper feed floating spring, and the force of the paper feed floating spring acts on the paper feed floating wheel, and the print medium passes through the active paper feed wheel and the paper feed floating wheel;

[0015] A paper feed transition wheel and a paper feed channel are also arranged between the active paper feed wheel and the printing paper feed structure.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that the force of the paper feed floating spring acts on the paper feed floating wheel, the paper feed floating wheel abuts against the active paper feed wheel, and the printing medium passes through the paper feed floating wheel and the active paper feed wheel, thereby preventing the printing medium from slipping during the transportation process and affecting the printing quality; the paper feed transition wheel is used to increase the wrap angle, and it also facilitates the direct transportation of the printing medium into the paper feed channel.

[0017] Further, the temporary storage upper channel and the temporary storage rubbing wheel are installed on the temporary storage bracket;

[0018] The moving mechanism comprises a slider structure arranged on both sides of the temporary storage paper feed bracket, the temporary storage bracket is installed on the slider structure, and the slider structure moves along the linear slide rail of the side wall of the temporary storage paper feed bracket;

[0019] A temporary storage motor is also installed on the side wall of the temporary storage paper feed bracket, and a synchronous belt is connected to the output end of the temporary storage motor. The synchronous belt is fixedly connected to the slider structure, and the temporary storage motor rotates to drive the temporary storage bracket to move along the linear slide rail in a direction away from the printing paper feed structure.

[0020] The beneficial effect of adopting the above further scheme is that the rotation of the temporary storage motor drives the synchronous belt to rotate, and the slider structure fixedly connected to the synchronous belt moves along the linear slide rail. The movement of the slider structure drives the temporary storage bracket to move synchronously, so that the distance between the temporary storage wheel installed on the temporary storage bracket and the printing paper feed structure gradually increases, so that the printing medium transported in the reverse direction by the printing paper feed structure is temporarily stored between the temporary storage wheel and the printing paper feed structure to achieve paper temporary storage, without the need to directly pull back the printing medium, thereby avoiding wrinkles.

[0021] Further, the slider structure includes a first linear slider and a second linear slider, and the first linear slider and the second linear slider are both installed on the linear slide rail;

[0022] The first linear slider is fixedly connected to the synchronous belt, the second linear slider is fixedly connected to the temporary storage bracket, a tension sensor is installed on the first linear slider, the tension sensor is connected to a sensor spring, and the other end of the sensor spring is connected to the second linear slider.

[0023] The beneficial effect of adopting the above further scheme is that the rotation of the synchronous belt drives the movement of the first linear slider. Since the same moving mechanism is installed on both sides of the temporary storage bracket, a sensor tension spring is arranged between the first linear slider and the second linear slider. The tension sensor is used to detect the force acting between the first linear slider and the second linear slider. The tension sensors located on both sides of the temporary storage bracket respectively detect the force between the sliders on both sides and then compare them. According to the comparison data, the moving mechanisms on both sides of the temporary storage bracket are accurately controlled to realize synchronous movement, which can not only realize accurate paper withdrawal, but also achieve the purpose of correcting deviation and removing wrinkles, thereby further improving the printing quality.

[0024] Furthermore, the printing paper feeding structure includes a printing roller shaft installed on the printing paper feeding bracket, and one end of the printing roller shaft is connected to a printing motor.

[0025] The beneficial effect of adopting the above further solution is that the rotation of the print motor drives the print roller to rotate, thereby realizing color printing, and different print rollers can be replaced according to different needs.

[0026] Furthermore, at least one paper feed roller is installed on both sides of the printing roller, and a paper feed channel is provided on the lower side of the paper feed roller, and the medium passes between the paper feed roller and the paper feed channel and on the upper side of the printing roller;

[0027] A paper feeding motor is installed at one end of the paper feeding roller shaft, and a code disc is installed at the other end of the paper feeding roller shaft.

[0028] The beneficial effect of adopting the above further solution is that the printing medium passes between the paper feed roller and the paper feed channel, and the number of paper feed rollers can be set accordingly according to the actual situation. Thus, the printing medium is directly fed to the printing roller for color printing and then output, ensuring the consistency of the printing medium; the code disc is used to detect the rotation of the paper feed roller to avoid jamming caused by uneven feeding of the printing medium, affecting the efficiency of printing medium feeding and thus reducing the printing quality.

[0029] Furthermore, a paper feeding floating bracket is arranged at the lower side of the paper feeding passage, and a paper feeding floating spring is arranged at the lower side of the paper feeding floating bracket.

[0030] The beneficial effect of adopting the above further scheme is that the force of the paper feed floating spring acts on the bottom of the floating bracket, so that the floating bracket lifts the paper feed channel and abuts against the paper feed roller, preventing the print medium from slipping during transportation and affecting the print quality.

[0031] Furthermore, a die-cutting module and a cutting knife module are installed on the temporary paper storage and output structure.

[0032] The beneficial effect of adopting the above further scheme is that the temporary storage structure used in the temporary paper output structure is the same as that in the temporary paper input structure; the die-cutting module is used to die-cut complex graphics; the temporary structure in the temporary paper output structure is used to temporarily store the printed media, and finally cut it by the cutter module.

[0033] Furthermore, the printing paper feeding structure and the printing paper output structure both include film rolls.

[0034] The beneficial effect of adopting the above further solution is that the film rolls in the paper feeding structure and the paper discharging structure are used to store unprinted printing media and recycle printed printing media respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of a temporary paper feeding structure according to a specific embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of a temporary paper feeding structure according to a specific embodiment of the present invention;

[0038] Figure 4 A specific embodiment of the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0039] Figure 5 This is a schematic diagram of a printing and paper feeding structure of a specific embodiment of the present invention;

[0040] Figure 6 The figure is a schematic diagram of a printing temporary storage and paper output structure according to a specific embodiment of the present invention.

[0041] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0042] 100, temporary paper feeding structure; 200, temporary paper output structure; 300, printing paper feeding structure; 400, printing paper feeding structure; 500, printing paper output structure; 600, frame assembly;

[0043] 101. Temporary storage of the left bracket; 102. Temporary storage of the right bracket; 103. Temporary storage of the lower bracket; 104. Temporary storage of the middle bracket; 105. Temporary storage of the upper bracket; 106. Active paper feed wheel; 107. Paper feed floating bracket; 108. Paper feed floating spring; 109. Paper feed transition wheel; 110. Temporary storage of the rubbing wheel; 111. Temporary storage of the upper channel; 112. Paper feed floating wheel; 113. Self-aligning bearing; 114. Tension sensor; 115. Sensor tension spring; 116. Slider structure; 117. Temporary storage of the motor; 118. Synchronous belt; 119. Linear slide rail; 120. Paper feed channel; 121. Temporary storage bracket; 122. Temporary storage of the paper feed bracket; 123. The first linear slider; 124. The second linear slider;

[0044] 201, die-cutting module; 202, cutting knife module;

[0045] 301, paper feed roller; 302, print roller; 303, paper feed motor; 304, encoder; 305, paper feed channel; 306, bearing support; 307, paper feed floating bracket; 308, paper feed floating spring; 309, print motor; 310, print paper feed bracket. DETAILED DESCRIPTION

[0046] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0047] In the description of the present invention, it is necessary to understand that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred system or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] In the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a printer with a temporary paper feeding structure includes a frame assembly 600 and a printing paper feeding structure 400, a temporary paper feeding structure 100, a printing paper feeding structure 300, a temporary paper output structure 200 and a printing paper output structure 500 arranged on the frame assembly 600.

[0051] The printing paper feed structure 400, the temporary paper feed structure 100, the printing paper feed structure 300, the temporary paper output structure 200 and the printing paper output structure 500 are arranged in sequence along the paper feed direction. The temporary paper feed structure 100 receives the medium returned by the printing paper feed structure 300 and temporarily stores it. The temporary paper output structure 200 receives the medium transported by the printing paper feed structure 300 and temporarily stores it, and then transports it to the printing paper output structure 500.

[0052] The color printing medium is sequentially printed in color from the print paper feed structure 400, the temporary paper feed structure 100, and the print paper feed structure 300. After printing the first color, the print paper feed structure 300 reversely transports the print medium to the temporary paper feed structure 100 for temporary storage. When printing the second color, the temporary paper feed structure 100 transports the print medium to the print paper feed structure 300. During the return process of the print medium, the print roller 302 maintains consistency with the film to prevent deviation and skewing, reduce the risk of wrinkles in the print medium, and thus improve the print quality of color printing.

[0053] The temporary paper feeding structure 100 includes an active paper feeding wheel 106, a temporary storage upper channel 111 and a temporary storage rubbing wheel 110 which are arranged in sequence along the paper feeding direction. The printing medium passes through between the temporary storage upper channel 111 and the temporary storage rubbing wheel 110 and is transported to the printing paper feeding structure 300 for printing. When the printing paper feeding structure 300 is transported in the reverse direction, the temporary storage upper channel 111 and the temporary storage rubbing wheel 110 are moved away from the printing paper feeding structure 300 by the action of the moving mechanism and the medium is temporarily stored. The temporary storage upper channel 111 and the temporary storage rubbing wheel 110 are both installed on the temporary storage bracket 121.

[0054] In order to further ensure the accurate delivery of printing media, the output end of the active paper feed wheel 106 is also provided with a paper feed channel, a paper feed floating bracket 107 and a paper feed floating spring for supporting the paper feed floating bracket 107. The gap of the paper feed channel is adaptively adjusted by the paper feed floating spring, so that it is suitable for printing media of different thicknesses, thereby improving the versatility of the printing media.

[0055] The outer periphery of the active paper feed wheel 106 is abutted with a paper feed floating wheel 112, and the paper feed floating wheel 112 is radially provided with a paper feed floating spring 108. The force of the paper feed floating spring 108 acts on the paper feed floating wheel 112, and the medium passes through the active paper feed wheel 106 and the paper feed floating wheel 112. The force of the paper feed floating spring 108 acts on the paper feed floating wheel 112, so that the paper feed floating wheel 112 and the outer periphery of the active paper feed wheel 106 are closely abutted. In the process of conveying the printing medium, it can not only be adjusted according to the thickness of the printing medium, but also the paper feed floating wheel 112 rotates synchronously with the active paper feed wheel 106 in the process of conveying the printing medium to prevent slipping.

[0056] A paper feed transition wheel 109 and a paper feed channel 120 are also provided between the active paper feed wheel 106 and the printing paper feed structure 400 . The paper feed transition wheel 109 is used to increase the wrap angle of the printing medium and also facilitates direct delivery of the printing medium into the paper feed channel 120 .

[0057] In this embodiment, the temporary paper feeding bracket 122 includes a temporary left bracket 101, a temporary lower bracket 103, a temporary right bracket 102 and a temporary upper bracket 105 connected in sequence. The temporary left bracket 101, the temporary lower bracket 103, the temporary right bracket 102 and the temporary upper bracket 105 are connected in sequence to form a rectangular structure. In order to further enhance the strength of the rectangular structure, a temporary middle bracket 104 is further provided between the temporary left bracket 101 and the temporary right bracket 102.

[0058] In a specific embodiment, both the temporary storage left bracket 101 and the temporary storage right bracket 102 are equipped with a moving mechanism, and the moving mechanism includes a slider structure 116 arranged on both sides of the temporary storage paper feed bracket 122, and the temporary storage bracket 121 is installed on the slider structure 116. Since the temporary storage upper channel 111 and the temporary storage rubbing wheel 110 are both installed on the temporary storage bracket 121, the slider structure 116 moves, driving the temporary storage upper channel 111 and the temporary storage rubbing wheel 110 to move synchronously. The slider structure 116 moves along the linear slide rail 119 on the side wall of the temporary storage paper feed bracket 122, thereby driving the temporary storage upper channel 111 and the temporary storage rubbing wheel 110 to temporarily store the printing medium. The temporary storage rubbing wheel 110 is installed on the temporary storage bracket 121 through the self-aligning bearing 113, and the temporary storage rubbing wheel 110 is aligned within the allowable range of the self-aligning bearing 113 to ensure the accuracy of paper retracting and paper feeding.

[0059] A temporary storage motor 117 is also installed on the side wall of the temporary storage paper feeding bracket 122. In a specific embodiment, the temporary storage motor 117 can be a servo motor or a stepper motor, which is convenient for controlling the rotation speed and rotation distance of the temporary storage motor 117. The output end of the temporary storage motor 117 is connected to a synchronous belt 118, one end of the synchronous belt 118 is connected to the output end of the temporary storage motor 117, and the other end is connected to a synchronous wheel installed on the temporary storage left bracket 101. The synchronous belt 118 is fixedly connected to the slider structure 116, and the temporary storage motor 117 rotates to drive the temporary storage bracket 121 to move along the linear slide rail 119 in a direction away from the printing paper feeding structure 300. During the movement, the distance between the temporary storage bracket 121 and the printing paper feeding structure 300 gradually increases. Since the printing medium is arranged between the printing paper feeding structure 300 and the temporary storage bracket 121, the printing medium between the printing paper feeding structure 300 and the temporary storage bracket 121 gradually increases, so that the printing medium is temporarily stored here, and there is no need to directly pull the printing medium back, thereby ensuring that the printing roller 302 and the film maintain consistency, preventing deviation and skewing, and reducing the risk of wrinkles in the color media.

[0060] In some embodiments, the slider structure 116 includes a first linear slider 123 and a second linear slider 124. The first linear slider 123 and the second linear slider 124 are both installed on the linear slide rail 119. The first linear slider 123 is fixedly connected to the synchronous belt 118, and the second linear slider 124 is fixedly connected to the temporary storage bracket 121. A tension sensor 114 is installed on the first linear slider 123. The tension sensor 114 is connected to a sensor tension spring 115. The other end of the sensor tension spring 115 is connected to the second linear slider 124.

[0061] During the rotation of the temporary storage motor 117, the synchronous belt 118 is driven to move, and the first linear slider 123 fixedly connected to the synchronous belt 118 moves synchronously along the linear slide rail 119. A sensor tension spring 115 is installed between the first linear slider 123 and the second linear slider 124, so that the second linear slider 124 moves along the linear slide rail 119 along the line of action of the sensor tension spring 115. At the same time, a tension sensor 114 is installed on the first linear slider 123, and the tension sensor 114 is used to detect the tension of the sensor tension spring 115 on the second linear slider 124.

[0062] Since the same moving mechanism is installed on the temporary left bracket 101 and the temporary right bracket 102 on both sides of the temporary paper feeding bracket 122, the temporary motors 117 on the temporary left bracket 101 and the temporary right bracket 102 rotate synchronously, and the tension sensor 114 is used to detect the tension at both ends and transmit it to the controller, and the controller compares whether the tension of the two tension sensors 114 is within the specified range. If it exceeds the specified value, the controller makes corresponding adjustments, reduces the speed of the temporary motor 117 at the end with large tension or increases the speed of the temporary motor 117 at the end with small tension, so that the tension on both sides is consistent, and then the tension at both ends of the printing medium is consistent, preventing the occurrence of pulling deviation and skewing, and at the same time, it is also used to correct the deviation and wrinkle removal of the printing medium, ensure the consistency of the printing medium, and then ensure the printing quality and reduce the scrap rate. Furthermore, when the tension sensor 114 detects that the tension between the first linear slider 123 and the second linear slider 124 reaches the set requirement, the temporary motor 117 stops rotating.

[0063] In order to further accurately detect the force between the first linear slider 123 and the second linear slider 124, a first connecting block and a second connecting block are respectively provided on the first linear slider 123 and the second linear slider 124. The middle part of the first connecting block is fixedly connected to the tension sensor 114, and both ends of the first connecting block are connected to the sensor springs 115, and the other ends of the two sensor springs 115 are connected to the second connecting block, and the second connecting block is fixedly connected to the second linear slider 124. The use of multiple evenly distributed sensor springs 115 makes the tension sensor 114 more evenly stressed, further improving the detection accuracy. An adjusting screw can also be provided between the first connecting block and the second connecting block to adjust the initial tension between the first linear slider 123 and the second linear slider.

[0064] The printing paper feeding structure 300 includes a printing roller 302 mounted on a printing paper feeding bracket 310, and one end of the printing roller 302 is connected to a printing motor 309. The printing roller 302 is used to print a set pattern or color on the printing medium, and the printing motor 309 generally adopts a servo motor or a stepping motor, which is convenient for accurately controlling the speed and rotation direction of the printing motor 309.

[0065] At least one paper feed roller 301 is installed on both sides of the printing roller 302. In a specific embodiment, two paper feed rollers 301 are installed on both sides of the printing roller 302. During printing, a paper feed channel 305 is provided on the lower side of the paper feed roller 301, and the medium passes between the paper feed roller 301 and the paper feed channel 305 and the upper side of the printing roller 302. Specifically, the printing medium first passes between the paper feed roller 301 and the paper feed channel 305 on one side of the printing roller 302, then passes through the upper side of the printing roller 302, and then passes between the paper feed roller 301 and the paper feed channel 305 on the other side of the printing roller 302 and is transported to the next actuator. A paper feed motor 303 is installed on one end of the paper feed roller 301. In this embodiment, the paper feed motor 303 also adopts a servo motor or a stepping motor, which is convenient for controlling the rotation speed and direction of the paper feed roller 301.

[0066] A code disc 304 is installed at the other end of the paper feed roller 301. The code disc 304 is used to detect the rotation of the paper feed roller 301 to prevent abnormal conditions from occurring when the paper feed roller 301 rotates, causing paper feeding failure and affecting printing quality. In some embodiments, the paper feed roller 301 is installed on the printing paper feed bracket 310. A bearing support 306 and a bearing are provided between the printing paper feed bracket 310 and the paper feed roller 301, thereby reducing the rolling friction between the paper feed roller 301 and the printing paper feed bracket 310. A paper feed floating bracket 307 is provided at the lower side of the paper feed channel 305. A paper feed floating spring 308 is provided at the lower side of the paper feed floating bracket 307. The paper feed floating bracket 307 is used to adjust the gap between the paper feed channel 305 and the paper feed roller 301, thereby adapting to printing media of different thicknesses. The paper feeding floating spring 308 at the lower side of the paper feeding floating bracket 307 acts on the bottom of the paper feeding floating bracket 307, and performs adaptive adjustment according to the thickness of different printing media, while satisfying the adaptive adjustment, ensuring the contact force between the paper feeding roller 301 and the printing medium.

[0067] The temporary storage structure of the temporary paper output structure 200 is the same as that of the temporary paper input structure 100, and the temporary paper output structure 200 is also equipped with a die-cutting module 201 and a cutter module 202. After the printing medium is printed in color, it enters the die-cutting module 201 for die-cutting. When the paper needs to be ejected for die-cutting complex graphics, the temporary storage mechanism in the temporary paper output structure 200 temporarily stores the printing medium, so as to facilitate the die-cutting module 201 to die-cut complex graphics. Finally, the printed paper after die-cutting is fed into the cutter module 202 for cutting.

[0068] The printing paper feed structure 400 and the printing paper output structure 500 both include a film roll, and the film roll in the printing paper feed structure 400 is used to store the printing medium that has not been printed in color. The film roll in the printing paper output structure 500 is used to recycle the medium that has been printed in color.

[0069] Working principle of the present invention: the printing medium is fed from the printing paper feeding structure 400 and enters the temporary paper feeding structure 100. Then it enters the paper feeding channel 120 and is driven forward by the active paper feeding wheel 106. At this time, the paper feeding floating wheel 112 installed on the paper feeding floating bracket 107 abuts against the active paper feeding wheel 106 under the action of the paper feeding floating spring 108 to ensure that the printing medium will not slip. At this time, the code disc 304 starts to work to detect whether the rotation of the active paper feeding wheel 106 is abnormal.

[0070] As the print medium continues to move, the path area where the print medium moves is smooth, the temporary storage rubbing wheel 110 is rubbed and rotated, and the print medium enters the printing paper feeding structure 300 along the temporary storage upper channel 111. When the print medium enters the printing paper feeding structure 300, the paper feeding channel 305 starts to guide and receive the print medium, and the paper feeding roller 301 starts to rotate. Since the paper feeding floating bracket 307 and the paper feeding floating spring are arranged at the lower side of the paper feeding channel 305, it is ensured that the print medium has enough friction to move forward, and enters above the print roller 302 to start color printing.

[0071] After printing the first color, the print roller 302 and the paper feed roller 301 are reversed under the action of the print motor 309 and the paper feed motor 303 respectively, and the print medium that has been printed is reversely transported to the temporary storage wheel 110. At this time, the temporary storage motor 117 starts to work, pulling the synchronous belt 118 to make the slider structure 116 fixed on the synchronous belt 118 move upward along the linear slide rail 119 and away from the print paper feed structure 300. At the same time, the first linear slider 123 pulls the second linear slider 124 through the tension sensor 114 and the sensor tension spring 115, and the temporary storage bracket 121 fixed on the second slider 124 and the temporary storage wheel 110 on the temporary storage bracket 121 move together along the linear slide rail 119, pulling the print medium that has been printed into a V-shaped fold to complete the paper storage. During the pulling process, the tension sensors 114 on the temporary left bracket 101 and the temporary right bracket 102 detect the tension of the sensor spring 115 respectively and compare and judge. If the tension at both ends is not equal, and there is deviation or paper wrinkling, the temporary motor 117 starts fine-tuning, and the temporary rubbing wheel 110 is adjusted within the adjustment range of the self-aligning bearing 113 to ensure that the force on the sensor spring 115 on both sides of the temporary left bracket 101 and the temporary right bracket 102 is consistent, thereby ensuring the progress of the printing medium entering and exiting. When the set tension is reached, the temporary motor 117 stops rotating.

[0072] When entering the printing paper feeding structure 300 again, the temporary storage wheel 110 starts to descend, and the temporary storage motor 117 reverses, and the print medium enters the printing paper feeding structure 300 again under the action of the paper feeding roller 301 and the paper feeding channel 305 for the second printing color.

[0073] After the color printing is completed, the printing medium enters the temporary paper output structure 200 and begins to be die-cut by the die-cutting module 201. Since the temporary paper output structure 200 is also provided with the same temporary storage structure as that in the temporary paper input structure 100, when the die-cutting of complex graphics requires paper withdrawal, the temporary storage structure in the temporary paper output structure 200 begins to rise to temporarily store the paper until the die-cutting is completed, and finally it is cut by the cutter module 202.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A printer with a temporary paper feeding structure, characterized in that: include A frame assembly (600) and a printing paper feed structure (400), a temporary paper feed structure (100), a printing paper feed structure (300), a temporary paper output structure (200) and a printing paper output structure (500) arranged on the frame assembly (600); The printing paper feed structure (400), the temporary paper feed structure (100), the printing paper feed structure (300), the temporary paper output structure (200) and the printing paper output structure (500) are arranged in sequence along the paper feed direction; the temporary paper feed structure (100) receives the medium returned by the printing paper feed structure (300) and temporarily stores it; the temporary paper output structure (200) receives the medium transported by the printing paper feed structure (300) and temporarily stores it, and then transports it to the printing paper output structure (500); The temporary paper feeding structure (100) comprises an active paper feeding wheel (106), a temporary upper channel (111) and a temporary rubbing wheel (110) which are sequentially arranged along the paper feeding direction; The printing medium passes between the temporary storage upper channel (111) and the temporary storage rubbing wheel (110) and is transported to the printing paper feeding structure (300). When the printing paper feeding structure (300) is transported in the reverse direction, the temporary storage upper channel (111) and the temporary storage rubbing wheel (110) are moved away from the printing paper feeding structure (300) under the action of the moving mechanism and the medium is temporarily stored. The active paper feed wheel (106) is in contact with a paper feed floating wheel (112) on its outer periphery, and the paper feed floating wheel (112) is radially provided with a paper feed floating spring (108), the force of the paper feed floating spring (108) acts on the paper feed floating wheel (112), and the medium passes through the active paper feed wheel (106) and the paper feed floating wheel (112); A paper feed transition wheel (109) and a paper feed channel (120) are also provided between the active paper feed wheel (106) and the printing paper feed structure (400); The temporary storage upper channel (111) and the temporary storage rubbing wheel (110) are installed on a temporary storage bracket (121); The moving mechanism comprises a slider structure (116) arranged on both sides of the temporary storage paper feed bracket (122), the temporary storage bracket (121) is installed on the slider structure (116), and the slider structure (116) moves along a linear slide rail (119) on the side wall of the temporary storage paper feed bracket (122); A temporary storage motor (117) is also installed on the side wall of the temporary storage paper feed bracket (122); the output end of the temporary storage motor (117) is connected to a synchronous belt (118); the synchronous belt (118) is fixedly connected to the slider structure (116); the temporary storage motor (117) rotates to drive the temporary storage bracket (121) to move along the linear slide rail (119) in a direction away from the printing paper feed structure (300); The temporary paper discharging structure (200) is also provided with a die-cutting module (201) and a cutting knife module (202).

2. The printer with a temporary paper feeding structure according to claim 1, characterized in that: The slider structure (116) comprises a first linear slider (123) and a second linear slider (124), wherein the first linear slider (123) and the second linear slider (124) are both installed on the linear slide rail (119); The first linear slider (123) is fixedly connected to the synchronous belt (118), the second linear slider (124) is fixedly connected to the temporary storage bracket (121), a tension sensor (114) is installed on the first linear slider (123), the tension sensor (114) is connected to a sensor tension spring (115), and the other end of the sensor tension spring (115) is connected to the second linear slider (124).

3. The printer with temporary paper feeding structure according to claim 2, characterized in that: The printing paper feeding structure (300) comprises a printing roller (302) mounted on a printing paper feeding bracket (310), and one end of the printing roller (302) is connected to a printing motor (309).

4. The printer with a temporary paper feeding structure according to claim 3, characterized in that: At least one paper feed roller (301) is installed on both sides of the printing roller (302), a paper feed channel (305) is arranged on the lower side of the paper feed roller (301), and the medium passes between the paper feed roller (301) and the paper feed channel (305) and on the upper side of the printing roller (302); A paper feeding motor (303) is installed at one end of the paper feeding roller shaft (301), and a code disc (304) is installed at the other end of the paper feeding roller shaft (301).

5. The printer with temporary paper feeding structure according to claim 4, characterized in that: A paper feeding floating bracket (307) is arranged at the lower side of the paper feeding channel (305), and a paper feeding floating spring (308) is arranged at the lower side of the paper feeding floating bracket (307).

6. The printer with a temporary paper feeding structure according to claim 1, characterized in that: The printing paper feeding structure (400) and the printing paper output structure (500) both include a film roll.

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