Pressure-free paper feeding printing device based on pneumatic buffering
By using pneumatic buffering technology, and utilizing drive rollers, servo motors, and negative pressure devices, the mechanical damage to paper caused by traditional paper feeding methods has been solved, enabling safe paper transport and high-precision printing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN HEXIN PACKAGING CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional printing equipment uses mechanical pressure to cause paper wrinkles or damage, which makes it difficult to meet the requirements of diverse printing materials and high precision.
Pneumatic buffering technology is adopted, which uses drive rollers, servo motors, conveyor steel belts and negative pressure devices to reduce mechanical damage to paper by adsorbing paper with negative pressure and combining it with a buffering mechanism.
It enables safe paper transport and reduces mechanical damage, improves printing accuracy and efficiency, and adapts to the needs of diverse printing materials.
Smart Images
Figure CN224377162U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of printing technology, specifically a pressure-free paper feeding printing device based on pneumatic buffering. Background Technology
[0002] In the development of the printing industry, paper feeding technology is a core element determining print quality, efficiency, and material adaptability. Traditional printing presses rely heavily on mechanical pressure to clamp and transport paper. The core principle is to drive the paper along a preset path and complete its positioning through the contact and compression of rigid components (such as feed rollers, pressure rollers, and chain teeth). While this technology has played a vital role in specific scenarios, with the diversification of printing materials and the increasing demands for printing precision and speed, it has gradually revealed insurmountable technical bottlenecks.
[0003] In practice, to save paper consumption, many papers are printed double-sided. However, the current paper feeding method for double-sided printing is pressure feeding. This method may cause the paper to wrinkle or be damaged due to excessive pressure during feeding, reducing the paper feeding efficiency of the device.
[0004] Therefore, this utility model provides a pressure-free paper feeding printing device based on pneumatic buffering. Utility Model Content
[0005] To overcome the shortcomings of the prior art and solve at least one of the problems mentioned in the background art, a pressure-free paper feeding printing device based on pneumatic buffering is proposed.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The pressure-free paper feeding printing device based on pneumatic buffering of this utility model includes a support leg; a base plate is fixedly installed on the top of the support leg, a bracket is fixedly installed on one side of the top of the base plate, a paper feeding mechanism is provided on the inner wall of the base plate, and support mechanisms are provided on both sides of the paper feeding mechanism; air supply mechanisms are provided on both sides of the sealing element, and a negative pressure mechanism is provided at the bottom of the base plate; a buffer mechanism is provided on the inner wall of the bracket, and a pressing component is provided on the top of the inner wall of the bracket; the paper feeding mechanism includes a drive roller and a servo motor. The system includes a conveyor belt and through holes. A drive roller is rotatably mounted on both sides of the inner wall of the base plate, with its surface rotatably connected to the conveyor belt. A servo motor is fixedly mounted on the side of the base plate closest to the drive roller, and the output end of the servo motor is fixedly mounted to the drive roller. Through holes are provided on the surface of the conveyor belt. The combined use of the drive roller and the servo motor enables the conveyor belt to rotate, thus transporting the paper. The combination of the conveyor belt and the through holes creates negative pressure within the conveyor belt, allowing the paper to be drawn in through the through holes, thereby reducing damage to the paper.
[0007] Preferably, the support mechanism includes a connecting plate, a support plate, and a sealing element. The connecting plate is threaded onto both sides of the inner wall of the base plate. The side of the connecting plate away from the base plate is fixedly installed with the support plate. The side of the support plate away from the connecting plate is fixedly installed with the sealing element. The sealing element is located on the inner wall of the conveyor belt and is rotatably installed with the conveyor belt. In this scheme, the cooperation between the connecting plate and the support plate can provide stable support for the sealing element, enabling it to function normally. The sealing element can provide a sealing effect on both sides of the conveyor belt and also prevent the conveyor belt from sagging.
[0008] Preferably, the gas delivery mechanism includes a connection port, a gas delivery pipe, and a negative pressure chamber. The connection port is connected to both sides of the sealing element. The end of the connection port away from the sealing element is threadedly installed with the gas delivery pipe. The end of the negative pressure chamber away from the connection port is fixedly installed with the negative pressure chamber. The negative pressure chamber is threadedly installed at the bottom of the base plate. In this scheme, the cooperation between the connection port and the gas delivery pipe can connect the negative pressure chamber to the conveyor belt, thereby facilitating the negative pressure chamber to extract air from the conveyor belt. The negative pressure chamber can generate negative pressure through the driving of the negative pressure mechanism, thereby generating suction.
[0009] Preferably, the negative pressure mechanism includes an annular shell, a support frame, a motor, and worm gear blades. The annular shell is connected to the bottom of the negative pressure chamber. The bottom of the inner wall of the annular shell is fixedly installed with the support frame. The inner wall of the support frame is fixedly installed with the motor. The output end of the motor is fixedly installed with the worm gear blades. In this scheme, the combined use of the annular shell, support frame, motor, and worm gear blades can perform vacuum treatment in the negative pressure chamber by rotation, reducing the internal pressure and generating negative pressure so that the conveyor belt can adsorb the paper, ensuring the safety of the paper during the conveying process.
[0010] Preferably, the buffer mechanism includes a fixed plate, a cylinder, a piston rod, a support ring, and a printing roller. The fixed plate is fixedly installed on both sides of the inner wall of the support. The top of the fixed plate is fixedly installed to the cylinder. The top of the inner wall of the cylinder is slidably installed to the piston rod. The top of the piston rod is fixedly installed to the support ring. The inner wall of the support ring is rotatably installed to the printing roller. In this design, the coordinated use of the fixed plate, cylinder, piston rod, and support ring can play a buffering role. When the printing roller descends, the piston rod can squeeze the air in the cylinder to achieve buffering, ensuring the safety of printing.
[0011] Preferably, the pressing assembly includes a U-shaped frame and a hydraulic cylinder. The U-shaped frame is fixedly installed on the top of the support ring, and the hydraulic cylinder is fixedly installed on the top of the inner wall of the bracket. The output end of the hydraulic cylinder is fixedly installed with the U-shaped frame. In this scheme, the cooperation between the U-shaped frame and the hydraulic cylinder can push the printing roller down so that it can print on the paper, thereby ensuring the normal operation of the equipment.
[0012] Preferably, the top and bottom of the sealing element (53) are provided with sealing gaskets on the side near the conveyor steel belt (43), and the surface of the sealing gaskets is coated with wear-resistant paint. In this scheme, the setting of the sealing gaskets can improve the sealing performance between the sealing element (53) and the conveyor steel belt (43), thereby effectively preventing the leakage of negative pressure in the conveyor steel belt (43) and thus affecting the suction. The application of wear-resistant paint can prevent the sealing gaskets from being excessively worn due to friction with the conveyor steel belt (43) during use, thereby affecting the overall service life.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. The pressure-free paper feeding printing device based on pneumatic buffering described in this utility model, through the arrangement of a drive roller, a servo motor, a conveyor belt, through holes, a connecting plate, a support plate, and a sealing element, enables the drive roller and servo motor to drive the conveyor belt to rotate, thereby allowing the conveyor belt to transport paper. The cooperation between the conveyor belt and the through holes creates negative pressure within the conveyor belt, which then adsorbs the paper through the through holes, thereby reducing damage to the paper. The cooperation between the connecting plate and the support plate provides stable support for the sealing element, enabling it to function normally. The sealing element provides a sealing effect on both sides of the conveyor belt and also prevents the conveyor belt from sagging.
[0015] 2. The pressure-free paper feeding printing device based on pneumatic buffering described in this utility model, through the arrangement of a connection port, an air supply pipe, a negative pressure chamber, an annular shell, a support frame, a motor, and worm gear blades, allows the connection port and the air supply pipe to work together to connect the negative pressure chamber to the conveyor belt. This facilitates the extraction of air from the conveyor belt by the negative pressure chamber. The negative pressure chamber can generate negative pressure through the driving of the negative pressure mechanism, thereby generating suction. The combined use of the annular shell, support frame, motor, and worm gear blades can perform vacuuming treatment within the negative pressure chamber through rotation, reducing its internal pressure and generating negative pressure to allow the conveyor belt to adsorb the paper, ensuring the safety of the paper during the conveying process. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings.
[0017] Figure 1 This is a front perspective view of the present invention;
[0018] Figure 2 This is a top view of the present invention;
[0019] Figure 3 This is a partial structural diagram of the present invention;
[0020] Figure 4 This is a schematic diagram of the gas delivery mechanism in this utility model;
[0021] Figure 5 yes Figure 2 Enlarged view of a portion of point A in the middle;
[0022] Figure 6 yes Figure 4 Enlarged view of section B in the middle.
[0023] Legend:
[0024] 1. Support leg; 2. Base plate; 3. Bracket; 4. Paper feeding mechanism; 41. Drive roller; 42. Servo motor; 43. Conveyor steel belt; 44. Through hole; 5. Support mechanism; 51. Connecting plate; 52. Support plate; 53. Seal; 6. Air supply mechanism; 61. Connection port; 62. Air supply pipe; 63. Negative pressure chamber; 7. Negative pressure mechanism; 71. Annular shell; 72. Support frame; 73. Motor; 74. Worm gear blade; 8. Buffer mechanism; 81. Fixing plate; 82. Cylinder; 83. Piston rod; 84. Support ring; 85. Printing roller; 9. Pressing assembly; 91. U-shaped frame; 92. Hydraulic cylinder. Detailed Implementation
[0025] 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 scope of protection of the present utility model.
[0026] Specific implementation examples are given below.
[0027] like Figures 1 to 6As shown in the embodiment of this utility model, the pressure-free paper feeding printing device based on pneumatic buffering includes a support leg 1; a base plate 2 is fixedly installed on the top of the support leg 1, a bracket 3 is fixedly installed on one side of the top of the base plate 2, a paper feeding mechanism 4 is provided on the inner wall of the base plate 2, and support mechanisms 5 are provided on both sides of the paper feeding mechanism 4; an air supply mechanism 6 is provided on both sides of the sealing element 53, and a negative pressure mechanism 7 is provided at the bottom of the base plate 2; a buffer mechanism 8 is provided on the inner wall of the bracket 3, and a pressing component 9 is provided on the top of the inner wall of the bracket 3; the paper feeding mechanism 4 includes a drive roller 41, a servo motor 42, a conveying steel belt 43, and a through hole 44, the drive roller 41 is rotatably installed on both sides of the inner wall of the base plate 2, and the surface of the drive roller 41 is flush with the inner wall of the base plate 2. The conveyor belt 43 is rotatably mounted. The base plate 2 is fixedly mounted to the servo motor 42 on the side near the drive roller 41. The output end of the servo motor 42 is fixedly mounted to the drive roller 41. The surface of the conveyor belt 43 has through holes 44. The support mechanism 5 includes a connecting plate 51, a support plate 52, and a sealing element 53. The connecting plate 51 is threaded onto both sides of the inner wall of the base plate 2. The side of the connecting plate 51 away from the base plate 2 is fixedly mounted to the support plate 52. The side of the support plate 52 away from the connecting plate 51 is fixedly mounted to the sealing element 53. The sealing element 53 is located on the inner wall of the conveyor belt 43 and is rotatably mounted to the conveyor belt 43. The air supply mechanism 6 includes a connecting port 61, an air supply pipe 62, and a negative pressure chamber 63. Connection port 61 connects to both sides of seal 53. The end of connection port 61 away from seal 53 is threadedly installed with air supply pipe 62. The end of negative pressure chamber 63 away from connection port 61 is fixedly installed with negative pressure chamber 63. Negative pressure chamber 63 is threadedly installed at the bottom of base plate 2. Negative pressure mechanism 7 includes annular shell 71, support frame 72, motor 73 and worm gear blade 74. Annular shell 71 connects to the bottom of negative pressure chamber 63. The bottom of inner wall of annular shell 71 is fixedly installed with support frame 72. Inner wall of support frame 72 is fixedly installed with motor 73. Output end of motor 73 is fixedly installed with worm gear blade 74. Buffer mechanism 8 includes fixed plate 81, cylinder 82, piston rod 83, and support. Ring 84 and printing roller 85, fixing plate 81 are fixedly installed on both sides of the inner wall of bracket 3, the top of fixing plate 81 is fixedly installed with cylinder 82, the top of the inner wall of cylinder 82 is slidably installed with piston rod 83, the top of piston rod 83 is fixedly installed with support ring 84, the inner wall of support ring 84 is rotatably installed with printing roller 85, the pressing assembly 9 includes U-shaped frame 91 and hydraulic cylinder 92, U-shaped frame 91 is fixedly installed on the top of support ring 84, hydraulic cylinder 92 is fixedly installed on the top of inner wall of bracket 3, the output end of hydraulic cylinder 92 is fixedly installed with U-shaped frame 91, the top and bottom of seal 53 are provided with sealing gaskets on the side near conveyor steel belt 43, and the surface of the sealing gasket is coated with wear-resistant coating.
[0028] like Figures 1 to 6As shown, the combined use of drive roller 41 and servo motor 42 enables the drive of the conveyor belt 43 to rotate, thereby allowing the conveyor belt 43 to transport paper. The combination of the conveyor belt 43 and through hole 44 allows the paper to be adsorbed through the through hole 44 after a negative pressure is generated inside the conveyor belt 43, thus reducing damage to the paper. The combination of connecting plate 51 and support plate 52 provides stable support for the seal 53, enabling it to function normally. The seal 53 provides a sealing effect on both sides of the conveyor belt 43 and also prevents the conveyor belt 43 from sagging. The combination of connecting port 61 and air pipe 62 connects the negative pressure chamber 63 to the conveyor belt 43, facilitating the extraction of air from the conveyor belt 43 by the negative pressure chamber 63. The negative pressure chamber 63 can generate negative pressure through the drive of the negative pressure mechanism 7, thereby generating suction. The annular shell 71, support frame 72, motor 73, and worm gear blades 74... The combined use of the components allows for vacuuming of the negative pressure chamber 63 through rotation, reducing its internal pressure and creating negative pressure to allow the conveyor belt 43 to adhere to the paper, ensuring the safety of the paper during transport. The combination of the fixing plate 81, cylinder 82, piston rod 83, and support ring 84 provides a buffering effect. When the printing roller 85 descends, the piston rod 83 squeezes the air in the cylinder 82 to achieve buffering, ensuring printing safety. The combination of the U-shaped frame 91 and the hydraulic cylinder 92 pushes the printing roller 85 down to print on the paper, ensuring the normal operation of the equipment. The sealing gasket improves the sealing between the sealing element 53 and the conveyor belt 43, effectively preventing leakage of negative pressure within the conveyor belt 43, which would affect suction. The application of wear-resistant coating prevents excessive wear of the sealing gasket due to friction with the conveyor belt 43 during use, thus affecting the overall lifespan.
[0029] Working principle: During operation, first place the support leg 1 in a flat position. Then, the user starts the motor 73 to drive the worm gear blade 74 to rotate. When the worm gear blade 74 rotates, it creates negative pressure in the negative pressure chamber 63. At the same time, the negative pressure chamber 63 extracts air from the conveyor belt 43 through the air supply pipe 62, creating negative pressure on the inner wall of the conveyor belt 43 as well. The user can then place paper on the surface of the conveyor belt 43. Due to the opening of the through hole 44, the paper is attracted by the negative pressure inside the conveyor belt 43, making the paper adhere tightly to the conveyor belt 43. Then, the servo motor 42 is started to drive the drive roller 41 to rotate for conveying. When the paper moves to the bottom of the printing roller 85, the hydraulic cylinder 92 is started to push the U-shaped frame 91 down. The descent of the U-shaped frame 91 will drive the support ring 84 and the printing roller 85 to move down. The downward movement of the printing roller 85 will print on the paper. At the same time, when the support ring 84 descends, it will drive the piston rod 83 to slide down. Since the cylinder 82 is sealed, the air inside its inner wall will be compressed to achieve a buffering effect and ensure that the printing roller 85 will not damage the paper.
[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A pressure-free paper feeding printing device based on pneumatic cushioning, comprising a supporting leg (1); characterized in that: A base plate (2) is fixedly installed on the top of the support leg (1), a bracket (3) is fixedly installed on one side of the top of the base plate (2), a paper feeding mechanism (4) is provided on the inner wall of the base plate (2), and a support mechanism (5) is provided on both sides of the paper feeding mechanism (4). The paper feeding mechanism (4) includes a drive roller (41), a servo motor (42), a conveyor belt (43), and a through hole (44). The drive roller (41) is rotatably mounted on both sides of the inner wall of the base plate (2). The surface of the drive roller (41) is rotatably mounted with the conveyor belt (43). The side of the base plate (2) near the drive roller (41) is fixedly mounted with the servo motor (42). The output end of the servo motor (42) is fixedly mounted with the drive roller (41). The surface of the conveyor belt (43) is provided with a through hole (44). The support mechanism (5) includes a connecting plate (51), a support plate (52), and a sealing element (53). The connecting plate (51) is threadedly installed on both sides of the inner wall of the base plate (2). The side of the connecting plate (51) away from the base plate (2) is fixedly installed with the support plate (52). The side of the support plate (52) away from the connecting plate (51) is fixedly installed with the sealing element (53). The sealing element (53) is located on the inner wall of the conveyor belt (43) and is rotatably installed with the conveyor belt (43).
2. The pressure-free paper feeding printing device based on pneumatic buffering according to claim 1, characterized in that: The sealing element (53) is provided with air supply mechanism (6) on both sides, and the bottom of the base plate (2) is provided with negative pressure mechanism (7).
3. The pressure-free paper feeding printing device based on pneumatic buffering according to claim 2, characterized in that: The inner wall of the bracket (3) is provided with a buffer mechanism (8), and the top of the inner wall of the bracket (3) is provided with a pressing component (9).
4. The pressure-free paper feeding printing device based on pneumatic buffering according to claim 3, characterized in that: The gas delivery mechanism (6) includes a connection port (61), a gas delivery pipe (62), and a negative pressure chamber (63). The connection port (61) is connected to both sides of the sealing element (53). The end of the connection port (61) away from the sealing element (53) is threadedly installed with the gas delivery pipe (62). The end of the negative pressure chamber (63) away from the connection port (61) is fixedly installed with the negative pressure chamber (63). The negative pressure chamber (63) is threadedly installed at the bottom of the base plate (2).
5. The pressure-free paper feeding printing device based on pneumatic buffering according to claim 4, characterized in that: The negative pressure mechanism (7) includes an annular shell (71), a support frame (72), a motor (73), and a worm gear blade (74). The annular shell (71) is connected to the bottom of the negative pressure chamber (63). The bottom of the inner wall of the annular shell (71) is fixedly installed with the support frame (72). The inner wall of the support frame (72) is fixedly installed with the motor (73). The output end of the motor (73) is fixedly installed with the worm gear blade (74).
6. The pressure-free paper feeding printing device based on pneumatic buffering according to claim 5, characterized in that: The buffer mechanism (8) includes a fixed plate (81), a cylinder (82), a piston rod (83), a support ring (84), and a printing roller (85). The fixed plate (81) is fixedly installed on both sides of the inner wall of the bracket (3). The top of the fixed plate (81) is fixedly installed with the cylinder (82). The top of the inner wall of the cylinder (82) is slidably installed with the piston rod (83). The top of the piston rod (83) is fixedly installed with the support ring (84). The inner wall of the support ring (84) is rotatably installed with the printing roller (85).
7. The pressure-free paper feeding printing device based on pneumatic buffering according to claim 6, characterized in that: The pressing assembly (9) includes a U-shaped frame (91) and a hydraulic cylinder (92). The U-shaped frame (91) is fixedly installed on the top of the support ring (84), and the hydraulic cylinder (92) is fixedly installed on the top of the inner wall of the bracket (3). The output end of the hydraulic cylinder (92) is fixedly installed with the U-shaped frame (91).
8. The pressure-free paper feeding printing device based on pneumatic buffering according to claim 1, characterized in that: The top and bottom of the seal (53) are provided with sealing gaskets on the side near the conveyor belt (43), and the surface of the sealing gaskets is coated with wear-resistant paint.