Printing device capable of preventing paper from deviating

Abstract

The invention belongs to the field of printing for preventing paper from deviating, and particularly relates to a printing device for preventing paper from deviating, which comprises a limiting device and a tightening device, the limiting device comprises a printing machine outer frame, a first stepping motor is arranged at the top of the printing machine outer frame, a first bevel gear is arranged at the bottom of the first stepping motor in a transmission mode, second bevel gears are arranged on the two sides of the first bevel gear in an engaged mode, and lead screws are arranged on the sides, away from each other, of the two second bevel gears in a transmission mode. A moving block is in threaded connection with the lead screw, and a first connecting block is fixedly arranged at the bottom of the moving block; through the arrangement of a first stepping motor, a first bevel gear, a second bevel gear, a lead screw, moving blocks and a fixing device, the first stepping motor drives the lead screw to rotate through the first bevel gear and the second bevel gear, the lead screw rotates to drive the two moving blocks to get close to the middle, and therefore printed paper is limited and shielded; and the printing paper is fixed through the fixing device.

Description

Technical Field

[0001] This invention belongs to the field of printing to prevent paper misalignment, and more specifically, it is a printing device to prevent paper misalignment. Background Technology

[0002] A printing apparatus is a device that transfers ink from a printing plate to paper; it is a machine for printing text and images. The text and images to be printed are made into a printing plate, which is then mounted on a printing press. Ink is then applied manually or by the printing press to the areas of the printing plate containing the text and images, and the ink is directly or indirectly transferred to paper or other printing substrates, thus reproducing a printed product identical to the printing plate.

[0003] During printing, the paper may shift due to machine vibration, resulting in inaccurate positioning of the printed content.

[0004] Therefore, we have made improvements to this and proposed a printing device that prevents paper misalignment. Summary of the Invention

[0005] To overcome the shortcomings of existing technology and solve the problem that the paper may shift due to machine vibration during printing, resulting in inaccurate printing content position.

[0006] The technical solution adopted by the present invention to solve its technical problem is: to provide a printing device for preventing paper deviation, including: a limiting device and a tensioning device; The limiting device includes a printing machine frame, a first stepper motor is provided at the top of the printing machine frame, a first bevel gear is driven at the bottom of the first stepper motor, second bevel gears are meshed on both sides of the first bevel gear, a lead screw is driven on the side of the two second bevel gears that are far apart from each other, a moving block is threadedly connected to the lead screw, a first connecting block is fixedly provided at the bottom of the moving block, and a fixing device is provided on the side of the first connecting block that is close to each other. The tensioning device includes two second connecting blocks, which are located at the bottom of the first connecting block. A first synchronous pulley is provided on the side of the two second connecting blocks that are far apart from each other. A second synchronous pulley is provided at the bottom of the first synchronous pulley. A synchronous belt is driven between the first synchronous pulley and the second synchronous pulley. A spline shaft is provided on the side of the two second synchronous pulleys that are close to each other. A fourth bevel gear is driven at the end of the two spline shafts that are close to each other. A third bevel gear is meshed between the two fourth bevel gears. A third stepper motor is driven on one side of the third bevel gear.

[0007] Furthermore, the fixed end of the first stepper motor is fixedly connected to the outer frame of the printing machine, the output shaft of the first stepper motor passes through the outer wall of the outer frame of the printing machine and is connected to the first bevel gear for transmission, the two lead screws are rotatably connected to the outer frame of the printing machine, and the threads of the two lead screws are opposite, and guide posts are provided on both sides of the lead screws, and the guide posts are fixedly connected to the outer frame of the printing machine.

[0008] During operation, the output shaft of the first stepper motor passes through the outer wall of the printing press frame and is connected to the first bevel gear, allowing the first stepper motor to rotate and drive the first bevel gear to rotate. Two lead screws are rotatably connected to the printing press frame, allowing the lead screws to rotate within the printing press frame.

[0009] Furthermore, the guide post passes through the moving block, and the moving block is slidably connected to the guide post. The fixing device includes a fixing platform, and the inner cavity of the fixing platform is provided with a second stepper motor. The fixed end of the second stepper motor is fixedly connected to the inner wall of the fixing platform, and the output shaft of the second stepper motor is driven by a connecting plate.

[0010] During operation, the movable block is slidably connected to the guide column, allowing the movable block to slide on the guide column. A connecting plate is driven by the output shaft of the second stepper motor, so that the rotation of the second stepper motor can drive the connecting plate to rotate.

[0011] Furthermore, the top and bottom of the connecting plate are respectively hinged with connecting rods, the top and bottom of the outer surface of the fixing platform are respectively provided with waist-shaped slots, and the top and bottom of the outer surface of the fixing platform are respectively provided with pulleys, which are rotatably connected to the connecting rods through a rotating shaft.

[0012] During operation, connecting rods are hinged to the top and bottom of the connecting plate, allowing the connecting rods to swing on the connecting plate. A pulley is rotatably connected to the connecting rod via a pivot, allowing the pulley to rotate on the connecting rod.

[0013] Furthermore, the fixed end of the third stepper motor is fixedly connected to the outer frame of the printing machine, the output shaft of the third stepper motor is driven by the third bevel gear, a bearing seat is provided on the side of the two fourth bevel gears that are far apart from each other, the fixed end of the bearing seat is fixedly connected to the outer frame of the printing machine, the spline shaft is clearance-fitted with the bearing hole inside the bearing seat, the outer surface of the second synchronous pulley is provided with a through spline groove, the spline shaft is engaged with the spline groove of the second synchronous pulley, the bottom of the second connecting block is provided with a through hole, the spline shaft is clearance-fitted with the hole of the second connecting block, and the first synchronous pulley is driven by the first connecting block through the rotating shaft.

[0014] During operation, the output shaft of the third stepper motor is connected to the third bevel gear, allowing the third stepper motor to rotate and drive the third bevel gear. The splined shaft rotates within the bearing's internal bore through a clearance fit with the bearing housing. Furthermore, the splined shaft engages with the spline groove of the second synchronous pulley, enabling the splined shaft to drive the second synchronous pulley's rotation. This efficient torque transmission and slippage prevention are achieved through the splined shaft.

[0015] The specific beneficial effects are as follows: 1. The printing device for preventing paper deviation described in this invention comprises a first stepper motor, a first bevel gear, a second bevel gear, a lead screw, a moving block, and a fixing device. The first stepper motor drives the lead screw to rotate via the first and second bevel gears. The rotation of the lead screw causes the two moving blocks to move closer to the center, thereby limiting and blocking the printed paper. The fixing device then fixes the printed paper.

[0016] 2. The printing device for preventing paper deviation described in this invention, through the arrangement of a third stepper motor, a third bevel gear, a fourth bevel gear, a splined shaft, a first synchronous pulley, a second synchronous pulley, and a synchronous belt, starts the third stepper motor, which drives the fixing device to rotate through the transmission of the third bevel gear, the fourth bevel gear, the splined shaft, the first synchronous pulley, the second synchronous pulley, and the synchronous belt. This causes the fixing device to change the angle of the guide wheel and twist the printing paper, thereby changing the pressure on the printing paper. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional view of the interior of the printing press frame of the present invention; Figure 3 This is the present invention. Figure 2 Enlarged view of A in the middle; Figure 4 This is a perspective view of the fixing device of the present invention; Figure 5 This is a perspective view of the interior of the fixing device of the present invention.

[0019] In the diagram: 10. Limiting device; 1001. First stepper motor; 1002. First bevel gear; 1003. Second bevel gear; 1004. Moving block; 1005. Guide column; 1006. First connecting block; 1007. Lead screw; 1008. Printing machine outer frame; 110. Fixing device; 1101. Fixing platform; 1102. Waist-shaped groove; 1103. Pulley; 1104. Second stepper motor; 1105. Connecting plate; 1106. Connecting rod; 20. Tensioning device; 2001. Second connecting block; 2002. First synchronous pulley; 2003. Second synchronous pulley; 2004. Synchronous belt; 2005. Splined shaft; 2006. Third stepper motor; 2007. Third bevel gear; 2008. Fourth bevel gear; 2009. Bearing seat. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] like Figures 1 to 5 As shown, the present invention provides a printing apparatus for preventing paper deviation, comprising: a limiting device 10 and a tensioning device 20; The limiting device 10 includes a printing machine frame 1008. A first stepper motor 1001 is provided at the top of the printing machine frame 1008. A first bevel gear 1002 is driven at the bottom of the first stepper motor 1001. Second bevel gears 1003 are meshed on both sides of the first bevel gear 1002. A lead screw 1007 is driven on the side of the two second bevel gears 1003 that are far apart from each other. A moving block 1004 is threadedly connected to the lead screw 1007. A first connecting block 1006 is fixed at the bottom of the moving block 1004. A fixing device 110 is provided on the side of the first connecting blocks 1006 that are close to each other. The tensioning device 20 includes two second connecting blocks 2001, which are located at the bottom of the first connecting block 1006. A first synchronous pulley 2002 is provided on the side of the two second connecting blocks 2001 that is far apart from each other. A second synchronous pulley 2003 is provided at the bottom of the first synchronous pulley 2002. A synchronous belt 2004 is driven between the first synchronous pulley 2002 and the second synchronous pulley 2003. A spline shaft 2005 is provided on the side of the two second synchronous pulleys 2003 that is close to each other. A fourth bevel gear 2008 is driven at the end of the two spline shafts 2005 that is close to each other. A third bevel gear 2007 is meshed between the two fourth bevel gears 2008. A third stepper motor 2006 is driven on one side of the third bevel gear 2007.

[0022] In one specific embodiment of the present invention, the fixed end of the first stepper motor 1001 is fixedly connected to the outer frame 1008 of the printing machine. The output shaft of the first stepper motor 1001 passes through the outer wall of the outer frame 1008 of the printing machine and is connected to the first bevel gear 1002 for transmission. The two lead screws 1007 are rotatably connected to the outer frame 1008 of the printing machine, and the threads of the two lead screws 1007 are opposite. Guide posts 1005 are provided on both sides of the lead screws 1007, and the guide posts 1005 are fixedly connected to the outer frame 1008 of the printing machine.

[0023] During operation, the output shaft of the first stepper motor 1001 passes through the outer wall of the printing press frame 1008 and is connected to the first bevel gear 1002, so that the rotation of the first stepper motor 1001 can drive the first bevel gear 1002 to rotate. Two lead screws 1007 are rotatably connected to the printing press frame 1008, so that the lead screws 1007 can rotate inside the printing press frame 1008.

[0024] In one specific embodiment of the present invention, the guide post 1005 passes through the moving block 1004, and the moving block 1004 is slidably connected to the guide post 1005. The fixing device 110 includes a fixing platform 1101. The inner cavity of the fixing platform 1101 is provided with a second stepper motor 1104. The fixed end of the second stepper motor 1104 is fixedly connected to the inner wall of the fixing platform 1101. The output shaft of the second stepper motor 1104 is driven by a connecting plate 1105.

[0025] During operation, the movable block 1004 is slidably connected to the guide post 1005, allowing the movable block 1004 to slide on the guide post 1005. A connecting plate 1105 is driven by the output shaft of the second stepper motor 1104, so that the rotation of the second stepper motor 1104 can drive the connecting plate 1105 to rotate.

[0026] In one specific embodiment of the present invention, the top and bottom of the connecting plate 1105 are respectively hinged with connecting rods 1106, the top and bottom of the outer surface of the fixing platform 1101 are respectively provided with waist-shaped slots 1102, and the top and bottom of the outer surface of the fixing platform 1101 are respectively provided with pulleys 1103, which are rotatably connected to the connecting rods 1106 through a rotating shaft.

[0027] During operation, connecting rods 1106 are hinged to the top and bottom of the connecting plate 1105, allowing the connecting rods 1106 to swing on the connecting plate 1105. A pulley 1103 is rotatably connected to the connecting rod 1106 via a pivot, allowing the pulley 1103 to rotate on the connecting rod 1106.

[0028] In one specific embodiment of the present invention, the fixed end of the third stepper motor 2006 is fixedly connected to the outer frame 1008 of the printing machine, the output shaft of the third stepper motor 2006 is drivenly connected to the third bevel gear 2007, a bearing seat 2009 is provided on the side of the two fourth bevel gears 2008 that are far apart from each other, the fixed end of the bearing seat 2009 is fixedly connected to the outer frame 1008 of the printing machine, the spline shaft 2005 is clearance-fitted with the bearing hole inside the bearing seat 2009, the outer surface of the second synchronous wheel 2003 is provided with a through spline groove, the spline shaft 2005 is engaged with the spline groove of the second synchronous wheel 2003, the bottom of the second connecting block 2001 is provided with a through hole, the spline shaft 2005 is clearance-fitted with the hole of the second connecting block 2001, and the first synchronous wheel 2002 is drivenly connected to the fixing device 110 through the first connecting block 1006 via a rotating shaft.

[0029] During operation, the output shaft of the third stepper motor 2006 is connected to the third bevel gear 2007, allowing the third stepper motor 2006 to rotate and drive the third bevel gear 2007 to rotate. The splined shaft 2005 rotates within the bearing bore of the bearing housing 2009 through a clearance fit. Furthermore, the splined shaft 2005 engages with the spline groove of the second synchronous pulley 2003, enabling the second synchronous pulley 2003 to rotate via the spline groove. This ensures that the splined shaft 2005 effectively transmits torque and prevents slippage.

[0030] The specific workflow is as follows: First, the first stepper motor 1001 is started. The first stepper motor 1001 drives the first bevel gear 1002 to rotate. The rotation of the first bevel gear 1002 drives the two second bevel gears 1003 and the two lead screws 1007 to rotate. Since the two lead screws 1007 have opposite helical directions, their rotation causes the two moving blocks 1004 to move closer and further apart. The moving blocks 1004 drive the first connecting block 1006 and the fixed stage 1101 to move, thus causing the fixed stage 1101 to block the printing paper and prevent it from shifting. Then, the second stepper motor 1104 is started. The rotation of the second stepper motor 1104 drives the connecting plate 1105 to rotate. The rotation of the connecting plate 1105 causes the connecting rod 1106 to swing. Since the pulley 1103 is slidably connected to the slot 1102 via a rotating shaft, the swinging of the connecting rod 1106 drives the two pulleys 1103 to move. The two pulleys 1103 move closer or further apart to clamp the printing paper, preventing the paper edges from curling up. Since the pulleys 1103 are rotatably connected to the connecting rod 1106, they will rotate with the printing paper. If the printing paper becomes loose, the third stepper motor 2006 is activated. The rotation of the third stepper motor 2006 drives the third bevel gear 2007 to rotate. The rotation of the third bevel gear 2007 drives the two fourth bevel gears 2008 and the two spline shafts 2005 to rotate. The rotation of the spline shafts 2005 drives the second synchronous pulley 2003 to rotate. The rotation of the second synchronous pulley 2003 drives the first synchronous pulley 2002 to rotate via the synchronous belt 2004. The rotation of the first synchronous pulley 2002 drives the fixed stage 1101 and the two pulleys 1103 to rotate. The rotation of the two pulleys 1103 will twist the printing paper, thereby changing the pressure of the printing paper.

[0031] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0032] In the description of this invention, it should be understood that the terms "middle," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A printing apparatus for preventing paper misalignment, characterized in that, include: Limiting device (10) and tightening device (20); The limiting device (10) includes a printing machine frame (1008), a first stepper motor (1001) is provided at the top of the printing machine frame (1008), a first bevel gear (1002) is driven at the bottom of the first stepper motor (1001), a second bevel gear (1003) is meshed on both sides of the first bevel gear (1002), a lead screw (1007) is driven on the side of the two second bevel gears (1003) that are far apart from each other, a moving block (1004) is threadedly connected to the lead screw (1007), a first connecting block (1006) is fixedly provided at the bottom of the moving block (1004), and a fixing device (110) is provided on the side of the first connecting blocks (1006) that are close to each other; The tensioning device (20) includes two second connecting blocks (2001), which are located at the bottom of the first connecting block (1006). A first synchronous pulley (2002) is provided on the side of the two second connecting blocks (2001) that is far apart from each other. A second synchronous pulley (2003) is provided at the bottom of the first synchronous pulley (2002). A synchronous belt (2004) is driven between the first synchronous pulley (2002) and the second synchronous pulley (2003). A spline shaft (2005) is provided on the side of the two second synchronous pulleys (2003) that is close to each other. A fourth bevel gear (2008) is driven at the end of the two spline shafts (2005) that is close to each other. A third bevel gear (2007) is meshed between the two fourth bevel gears (2008). A third stepper motor (2006) is driven on one side of the third bevel gear (2007).

2. The printing apparatus for preventing paper misalignment according to claim 1, characterized in that: The fixed end of the first stepper motor (1001) is fixedly connected to the printing machine outer frame (1008). The output shaft of the first stepper motor (1001) passes through the outer wall of the printing machine outer frame (1008) and is connected to the first bevel gear (1002) for transmission. The two lead screws (1007) are rotatably connected to the printing machine outer frame (1008), and the threads of the two lead screws (1007) are opposite. Guide posts (1005) are provided on both sides of the lead screws (1007), and the guide posts (1005) are fixedly connected to the printing machine outer frame (1008).

3. The printing apparatus for preventing paper misalignment according to claim 2, characterized in that: The guide post (1005) passes through the moving block (1004), and the moving block (1004) is slidably connected to the guide post (1005). The fixing device (110) includes a fixing platform (1101). The inner cavity of the fixing platform (1101) is provided with a second stepper motor (1104). The fixed end of the second stepper motor (1104) is fixedly connected to the inner wall of the fixing platform (1101). The output shaft of the second stepper motor (1104) is driven by a connecting plate (1105).

4. The printing apparatus for preventing paper misalignment according to claim 3, characterized in that: The top and bottom of the connecting plate (1105) are respectively hinged with connecting rods (1106), the top and bottom of the outer surface of the fixed platform (1101) are respectively provided with waist-shaped slots (1102), the top and bottom of the outer surface of the fixed platform (1101) are respectively provided with pulleys (1103), and the pulleys (1103) are rotatably connected to the connecting rods (1106) through a rotating shaft.

5. The printing apparatus for preventing paper misalignment according to claim 4, characterized in that: The fixed end of the third stepper motor (2006) is fixedly connected to the outer frame (1008) of the printing press. The output shaft of the third stepper motor (2006) is connected to the third bevel gear (2007) for transmission. A bearing seat (2009) is provided on the side of the two fourth bevel gears (2008) that are far apart from each other. The fixed end of the bearing seat (2009) is fixedly connected to the outer frame (1008) of the printing press. The spline shaft (2005) is connected to the internal shaft of the bearing seat (2009). The second synchronous pulley (2003) has a through spline groove on its outer surface, and the spline shaft (2005) engages with the spline groove of the second synchronous pulley (2003). The bottom of the second connecting block (2001) has a through circular hole, and the spline shaft (2005) engages with the circular hole of the second connecting block (2001). The first synchronous pulley (2002) is connected to the fixing device (110) by passing through the first connecting block (1006) via a rotating shaft.

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