Printing positioning device
By designing a printing positioning device that includes components such as a base frame, dovetail groove, slide block, and positioning roller, the problem of centering offset during paper printing was solved, enabling automatic adjustment and centering positioning of papers of different thicknesses and widths, thus improving printing accuracy and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-03-13
AI Technical Summary
Existing paper printing equipment lacks limiting components during the printing process, which may cause centering misalignment during paper printing and makes it unable to adapt to paper of different widths and thicknesses.
A printing positioning device was designed, comprising components such as a base frame, dovetail groove, slide, positioning roller, stud, translation seat, arc guide seat, and laser sensor. It achieves automatic paper adjustment through transmission elements and laser sensor, and is suitable for centering and positioning of printing paper of various thicknesses and widths.
It achieves centering and positioning guidance in paper printing, and can automatically adjust the printing gap according to changes in paper width and thickness. It is suitable for a variety of different types of paper, improving printing accuracy and efficiency.
Smart Images
Figure CN223989870U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of printing technology, specifically to a printing positioning device. Background Technology
[0002] Paper printing is the mainstream of printed materials, accounting for about 95%. It can be applied to letterpress, offset, gravure, and screen printing, hence the name "ordinary printing." Paper is printed by a printing press, which copies patterns, text, and other information onto its surface. In existing technology: Authorization Publication No. CN215620803 U's patent discloses a paper printing apparatus, including a connecting plate, a fixed frame, an ink hopper, fixing screws, and a fixing plate. The connecting plate has symmetrically arranged fixing frames on its left and right sides at the front center. Fixing screws are symmetrically arranged on the upper outer sides of both fixing frames. An ink hopper is connected between the upper sides of the two fixing frames via four fixing screws. The apparatus uses a rocker arm to rotate the printing roller counterclockwise, causing the roller to rotate clockwise and move the paper forward, thus enabling the printing roller to print on the paper, achieving fast and efficient printing. However, during the paper printing process, the printing roller and roller work together to print on the paper. The lack of a limiting component on the roller may cause centering misalignment during printing. Furthermore, if a centering guide groove or limiting ring is used on the roller, it will no longer be effective for centering the paper when the width of the printed paper changes. Therefore, we propose a printing positioning device. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a printing positioning device. The device is installed at the paper feeding position of the paper printing area to center and guide the paper printing. Moreover, the device can automatically adjust the paper centering guide gap according to the change of paper printing width through the transmission element, so that the device is suitable for centering and positioning of paper printing with different thicknesses and widths, and can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a printing positioning device, including a base frame, wherein two symmetrically distributed dovetail grooves are provided on the left and right walls of the base frame, and slide seats are slidably connected inside the dovetail grooves. Positioning rollers are rotatably connected between two horizontally adjacent slide seats through a rotating shaft, and a positioning mechanism is also included.
[0005] Positioning mechanism: It includes studs, translation seats, arc-shaped guide seats and laser sensors. The studs are rotatably connected to the left and right walls of the base frame through bearings. Translation seats are threaded to the outer side of each stud. The inner sides of the two translation seats are provided with two longitudinally symmetrical arc-shaped guide seats through connecting rods. The arc-shaped guide seat on the right side of the front side is provided with a laser sensor on the side near the center of the base frame. This device is installed at the paper feeding position of the paper printing section to center and guide the paper printing. The device can automatically adjust the paper centering guide gap according to the change of paper printing width through transmission elements, making the device suitable for centering and positioning of paper printing with various thicknesses and widths.
[0006] Furthermore, it also includes a microcontroller, which is located outside the base frame. The input terminal of the microcontroller is electrically connected to an external power supply, and the microcontroller is bidirectionally electrically connected to the laser sensor, making it convenient to control electrical components.
[0007] Furthermore, it also includes a bidirectional lead screw, which is rotatably connected between two dovetail grooves on the left side via a bearing. Both the upper and lower ends of the bidirectional lead screw are threadedly connected to the adjacent slide block, and the paper in the printing positioning device is adjusted according to the change in the thickness of the printing paper by adjusting the gap thickness.
[0008] Furthermore, the upper end of the bidirectional lead screw is provided with an adjustment shaft, the upper end of which passes through a circular hole in the wall of the base frame and is provided with an adjustment handwheel, which facilitates the adjustment of the bidirectional lead screw in the printing positioning device.
[0009] Furthermore, the positioning mechanism also includes guide rods, which are symmetrically arranged longitudinally on the side of the translation seat away from the center of the base frame. The end of the guide rod away from the center of the base frame is slidably connected to a circular hole on the base frame to prevent the translation seat from flipping during the translation process inside the printing positioning device.
[0010] Furthermore, the positioning mechanism also includes a second rotating shaft, a synchronous pulley, a synchronous belt, and a brake motor. The second rotating shaft is rotatably connected to the lower end between the left and right walls of the base frame via a second bearing. Synchronous pulleys are provided at both ends of the second rotating shaft and at the end of the stud away from the center of the base frame. Two vertically adjacent synchronous pulleys are connected by synchronous belt transmission. A brake motor is provided on the right side of the base frame. The input end of the brake motor is electrically connected to the output end of the microcontroller. The output shaft of the brake motor is fixedly connected to the right end of the second rotating shaft to control the simultaneous movement of the arc-shaped guide seat in the printing positioning device.
[0011] Furthermore, the threaded grooves between the studs are opened in opposite directions, so that the two translation seats in the printing positioning device can simultaneously move closer to or away from the center of the device when the two studs rotate in the same direction.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This printing positioning device has the following advantages:
[0013] When using the printing positioning device, the device is installed at the paper feeding position of the paper printing area to center and guide the paper printing. The device, through components such as studs, translation seats, arc guide seats, laser sensors, microcontrollers and brake motors, can automatically adjust the paper centering guide gap according to the changes in the paper printing width, making the device suitable for centering and positioning of paper printing with various thicknesses and widths. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] In the diagram: 1. Base frame, 2. Microcontroller, 3. Dovetail groove, 4. Slide seat, 5. Rotary shaft one, 6. Positioning roller, 7. Bidirectional lead screw, 8. Adjusting handwheel, 9. Positioning mechanism, 91. Stud, 92. Translation seat, 93. Arc-shaped guide seat, 94. Laser sensor, 95. Guide rod, 96. Rotary shaft two, 97. Synchronous pulley, 98. Synchronous belt, 99. Brake motor. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1This embodiment provides a technical solution: a printing positioning device, including a base frame 1, with two symmetrically distributed dovetail grooves 3 on both the left and right walls of the base frame 1. Slide seats 4 are slidably connected inside each dovetail groove 3. Positioning rollers 6 are rotatably connected between two horizontally adjacent slide seats 4 via a rotating shaft 5. The device also includes a microcontroller 2 located outside the base frame 1, with its input terminal electrically connected to an external power supply. Furthermore, it includes a bidirectional lead screw 7, which is rotatably connected between the two dovetail grooves 3 on the left side via a bearing. Both the upper and lower ends of the bidirectional lead screw 7 are threadedly connected to adjacent slide seats 4. An adjusting shaft is provided at the upper end of the bidirectional lead screw 7, and the upper end of the adjusting shaft passes through the base frame 1. The device has a circular hole in its wall and an adjusting handwheel 8. When using the device to position the paper for printing, the device is first installed at the paper feeding section of the printing area, so that the paper passes horizontally through the device and then enters the printing area horizontally for printing. Depending on the printing thickness of the paper, the operator manually rotates the adjusting handwheel 8 to drive the bidirectional lead screw 7 to rotate. During the rotation of the bidirectional lead screw 7, the two slides 4 on the left side move away from or closer to each other along the dovetail groove 3 on the left side through the threaded connection. The two slides 4 on the left side drive the corresponding positioning rollers 6 to move synchronously through the rotating shaft 5, thereby adjusting the paper printing positioning guide thickness of the device according to the paper thickness. The device also includes a positioning mechanism 9.
[0018] Positioning mechanism 9 includes studs 91, translation seats 92, arc-shaped guide seats 93, and laser sensors 94. The studs 91 are rotatably connected to the left and right walls of the base frame 1 via bearings. Translation seats 92 are threaded onto the outer sides of each stud 91. Two longitudinally symmetrically distributed arc-shaped guide seats 93 are provided on the opposite inner surfaces of the two translation seats 92 via connecting rods. The laser sensor 94 is located on the side of the arc-shaped guide seat 93 on the right front end, near the center of the base frame 1. The microcontroller 2 is bidirectionally electrically connected to the laser sensor 94. Positioning mechanism 9 also includes guide rods 95, which are longitudinally symmetrically arranged on the side of the translation seats 92 away from the center of the base frame 1. The ends of the guide rods 95 away from the center of the base frame 1 are slidably connected to circular holes opened on the base frame 1. Positioning mechanism 9 also... The system includes a second rotating shaft 96, synchronous pulleys 97, a synchronous belt 98, and a brake motor 99. The second rotating shaft 96 is rotatably connected to the lower end between the left and right walls of the base frame 1 via bearings 98. Synchronous pulleys 97 are located at both ends of the second rotating shaft 96 and at the end of the stud 91 furthest from the center of the base frame 1. Vertically adjacent synchronous pulleys 97 are connected by a synchronous belt 98. The brake motor 99 is located on the right side of the base frame 1. The input end of the brake motor 99 is electrically connected to the output end of the microcontroller 2. The output shaft of the brake motor 99 is fixedly connected to the right end of the second rotating shaft 96. The threaded grooves between the studs 91 are in opposite directions. Based on the width of the printing paper, the microcontroller 2 activates the brake motor 99, causing its output shaft to drive the second rotating shaft 96 to rotate. The second rotating shaft 96 then drives the two synchronous pulleys 97 on its lower side to rotate. The stepper pulleys 97 rotate synchronously in the same direction. The two lower synchronous pulleys 97 drive the corresponding upper synchronous pulleys 97 to rotate synchronously via the corresponding synchronous belts 98. The upper synchronous pulleys 97 drive the corresponding studs 91 to rotate synchronously in the same direction. Since the two studs 91 are horizontally aligned and their threaded grooves are opposite, during the rotation of the two studs 91, through the threaded connection between themselves and the corresponding translation seats 92, the two translation seats 92 move towards the center of the device simultaneously. The translation seats 92 drive the corresponding arc-shaped guide seats 93 to move synchronously, thereby adjusting the paper printing centering guide gap formed between the horizontally adjacent arc-shaped guide seats 93. At the same time, the microcontroller 2 activates the laser sensor 94, and the laser sensor 94 emits... The emitted light signal illuminates the side of the adjacent arc-shaped guide seat 93 on the left and reflects back to the initial position. Based on the propagation time and speed of the light signal, the paper printing centering guide gap formed between the horizontally adjacent arc-shaped guide seats 93 is measured, and the measurement result is transmitted to the microcontroller 2 as an electrical signal. When the paper printing centering guide gap is adjusted to the corresponding paper width, the microcontroller 2 promptly shuts off the brake motor 99 based on the measurement result, thereby adjusting the centering guide width of the printed paper. During the horizontal movement of the arc-shaped guide seat 93, the guide rod 95 adaptively slides along the corresponding circular hole, thus preventing rotation during the horizontal movement of the arc-shaped guide seat 93. After the brake motor 99 is energized, the armature inside the brake motor 99 is electromagnetically attracted.The brake disc is rotatable, and the brake motor 99 rotates freely. When the brake motor 92 is de-energized, the electromagnet is de-energized, and the armature is immediately held in place by the spring, pressing the brake disc against the rear end cover of the motor and stopping its rotation. Therefore, the brake motor 99 has a self-locking function. The initial end of the paper to be printed is then passed through the vertical gap formed between the two positioning rollers 6. Simultaneously, the front and rear sides of the paper are aligned and positioned for printing via the corresponding arc-shaped guide seat 93. This device is installed at the paper feeding position of the paper printing area, thereby providing centering and guidance for paper printing. Furthermore, through transmission elements, the device can automatically adjust the paper centering guide gap according to changes in the paper printing width, making it suitable for centering and positioning various paper thicknesses and widths.
[0019] The working principle of the printing positioning device provided by this utility model is as follows: When using the device to position paper for printing, the device is first installed at the paper conveyor of the printing area, so that the paper passes horizontally through the device and then horizontally enters the printing area for printing. According to the printing thickness of the paper, the operator manually rotates the adjusting handwheel 8 to drive the bidirectional lead screw 7 to rotate. During the rotation of the bidirectional lead screw 7, the two slides 4 on the left side are moved away from or closer to each other along the dovetail groove 3 on the left side through the threaded connection. The two slides 4 on the left side drive the corresponding positioning rollers 6 to move synchronously through the rotating shaft 5, thereby adjusting the paper printing positioning guide thickness of the device according to the thickness of the paper. Subsequently, according to the thickness of the printed paper... The microcontroller 2 starts the brake motor 99, causing its output shaft to drive the rotating shaft 96 to rotate. The rotating shaft 96 drives the two lower synchronous pulleys 97 to rotate synchronously in the same direction. The two lower synchronous pulleys 97 drive the corresponding upper synchronous pulleys 97 to rotate synchronously through the corresponding synchronous belts 98. The upper synchronous pulleys 97 drive the corresponding studs 91 to rotate synchronously in the same direction. Since the two studs 91 are horizontally aligned and their threaded grooves are opposite, during the rotation of the two studs 91, through the threaded connection between themselves and the corresponding translation seats 92, the two translation seats 92 simultaneously move towards the center of the device. The translation seats 92 drive the corresponding arc-shaped guide seats 93 to move synchronously. This adjusts the paper printing centering guide gap formed by the horizontally adjacent arc-shaped guide seats 93. Simultaneously, the microcontroller 2 activates the laser sensor 94, which emits a light signal that illuminates the side of the adjacent left arc-shaped guide seat 93 and reflects back to its initial position. Based on the light signal propagation time and speed, the paper printing centering guide gap formed by the horizontally adjacent arc-shaped guide seats 93 is measured, and the result is transmitted to the microcontroller 2 as an electrical signal. When the paper printing centering guide gap is adjusted to the corresponding paper width, the microcontroller 2 promptly shuts off the brake motor 99 based on the measurement result, thereby adjusting the centering guide width of the printed paper. The arc-shaped guide seats 93 move horizontally... During operation, the guide rod 95 slides adaptively along the corresponding circular hole, thereby preventing rotation during the horizontal movement of the arc-shaped guide seat 93. After the brake motor 99 is powered on, the armature inside the brake motor 99 is electromagnetically attracted, making the brake disc rotatable and allowing the brake motor 99 to rotate freely. When the brake motor 92 is de-energized, the electromagnet is de-energized, and the armature is immediately pressed by the spring, causing the brake disc to press against the rear end cover of the motor and stop rotating. Therefore, the brake motor 99 has a self-locking function. Then, the initial end of the paper to be printed is passed through the vertical gap formed between the two positioning rollers 6, and the front and rear sides of the paper are printed, transported, centered, and positioned by the corresponding arc-shaped guide seat 93.
[0020] It is worth noting that the microcontroller 2 disclosed in the above embodiments can be an MSP430, the laser sensor 94 can be a WH-LRF laser rangefinder, and the brake motor 99 can be a YEJ6324. The microcontroller 2 controls the operation of the laser sensor 94 and the brake motor 99 using methods commonly used in the prior art.
[0021] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A printing positioning device, comprising a chassis (1), two symmetrical dovetail grooves (3) are formed in the left and right walls of the chassis (1), a sliding seat (4) is slidably connected in each of the dovetail grooves (3), and a positioning roller (6) is rotatably connected between two horizontally adjacent sliding seats (4) through a rotating shaft I (5), characterized in that: The positioning mechanism (9) is further provided with a guide rod (95), which is longitudinally and symmetrically arranged on the side of the translation seat (92) away from the center of the chassis (1), and the end of the guide rod (95) away from the center of the chassis (1) is slidably connected with the circular hole of the chassis (1). The positioning mechanism (9) further comprises a rotating shaft two (96), a synchronous pulley (97), a synchronous belt (98) and a brake motor (99), the rotating shaft two (96) is rotatably connected between the left and right walls of the chassis (1) at the lower end through a bearing two, the left and right ends of the rotating shaft two (96) and the end of the stud (91) away from the center of the chassis (1) are provided with the synchronous pulley (97), the vertically adjacent two synchronous pulleys (97) are drivingly connected through the synchronous belt (98), the right side of the chassis (1) is provided with the brake motor (99), the input end of the brake motor (99) is electrically connected with the output end of the single-chip microcomputer (2), and the output shaft of the brake motor (99) is fixedly connected with the right end of the rotating shaft two (96).
2. A print registration apparatus as claimed in claim 1, wherein: The positioning mechanism (9) further comprises a guide rod (95), which is longitudinally and symmetrically arranged on the side of the translation seat (92) away from the center of the chassis (1), and the end of the guide rod (95) away from the center of the chassis (1) is slidably connected with the circular hole of the chassis (1).
3. A print registration apparatus as claimed in claim 1, wherein: The positioning mechanism (9) further comprises a rotating shaft two (96), a synchronous pulley (97), a synchronous belt (98) and a brake motor (99), the rotating shaft two (96) is rotatably connected between the left and right walls of the chassis (1) at the lower end through a bearing two, the left and right ends of the rotating shaft two (96) and the end of the stud (91) away from the center of the chassis (1) are provided with the synchronous pulley (97), the vertically adjacent two synchronous pulleys (97) are drivingly connected through the synchronous belt (98), the right side of the chassis (1) is provided with the brake motor (99), the input end of the brake motor (99) is electrically connected with the output end of the single-chip microcomputer (2), and the output shaft of the brake motor (99) is fixedly connected with the right end of the rotating shaft two (96).
4. A print registration apparatus as claimed in claim 3, wherein: The screw grooves between the studs (91) are oppositely arranged.
5. A print registration apparatus as claimed in claim 1, wherein: 6. A print registration apparatus as claimed in claim 2, wherein: 7. A print registration apparatus as claimed in claim 1, wherein: