Conveying mechanism for calibration and stable conveying and printing equipment

Abstract

The invention discloses a conveying mechanism for calibration and stable conveying and printing equipment. The conveying mechanism comprises a support. A transfer assembly; the pressing roller assembly is installed on the support and used for being matched with the conveying assembly to press the to-be-conveyed materials; the transferring assembly is installed on the support and used for transferring the to-be-conveyed materials; the conveying assembly comprises a plurality of conveying rollers, a driving piece used for driving the conveying rollers to rotate, a plurality of conveying belts and a first lifting assembly. A baffle is arranged on the support and used for abutting against the edge of a to-be-conveyed material. The conveying roller is used for conveying to-be-conveyed materials and displacing the to-be-conveyed materials in the first direction and the second direction until the to-be-conveyed materials abut against the baffle; after the to-be-conveyed materials abut against the baffles, the conveying belt is matched with the first lifting assembly to lift and lift the to-be-conveyed materials, and the height of the lifted conveying belt exceeds the horizontal height of the conveying rollers. The pressing roller assembly is matched with the lifted conveying belt to press materials to be conveyed. The materials to be conveyed are hard materials. According to the scheme, the conveying efficiency and precision can be improved, and conveying is more stable.

Description

Technical Field

[0001] The present invention relates to a printing device, in particular to a transmission mechanism and a printing device for calibration and stable transmission. Background Art

[0002] With the widespread application of large-format printing technology in advertising signs, building materials decoration, industrial material pretreatment and other fields, the core technical challenges faced by large-scale printing equipment are becoming increasingly prominent.

[0003] Due to the large size and weight of the print targets used on large-scale printing equipment, calibration is also more difficult. Furthermore, as the format increases, the stability of the material transfer system directly impacts the precision and quality of the finished product. With the increasing demand for high-precision printing and precision machining in industrial manufacturing, deviations during the transfer process can lead to serious quality issues such as misaligned print patterns and deviations in cut contours.

[0004] Although a calibration step is currently implemented before the transfer process, where the printed material is calibrated and then transferred to the printhead via a transfer component for printing, the lack of proper positioning of the printed material still makes it susceptible to material shifting during transfer and printing. This problem arises from uneven contact between the printed material and the transfer component. Therefore, addressing this issue in a targeted manner could alleviate the current issue of material shifting during transfer and printing. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a transmission mechanism and printing equipment for calibration and stable transmission, which can improve the transmission efficiency and accuracy and make the transmission more stable.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a transmission mechanism for calibration and stable transmission, comprising Bracket; A conveying assembly is mounted on the bracket and is used to carry the material to be conveyed and convey the material to a target location; The pressure roller assembly is installed on the bracket and is used to cooperate with the conveying assembly to press the material to be conveyed; A transfer assembly, mounted on the bracket, for transferring the material to be delivered at the first position to a second position, where the second position is a position where the conveying assembly is used to carry the material to be delivered; The conveying assembly includes a plurality of conveying rollers, a driving member for driving the conveying rollers to rotate, a plurality of conveying belts, and a lifting assembly; The bracket is provided with a baffle, which is used for the edge of the material to be conveyed to abut against; the conveying roller is used to convey the material to be conveyed and to form a first direction and a second direction displacement of the material to be conveyed until the material to be conveyed abuts against the baffle, the first direction being the displacement direction of the material to be conveyed toward the baffle, and the second direction being the direction in which the material to be conveyed needs to be conveyed; After the material to be conveyed abuts against the baffle, the conveyor belt cooperates with the lifting assembly to lift and raise the material to be conveyed, and the conveyor belt is raised to exceed the horizontal height of the conveying roller; The pressing roller assembly cooperates with the raised conveyor belt to press the material to be conveyed; The material to be delivered is hard material.

[0007] As a further improvement of the present invention, the pressure roller assembly includes a pressure roller and a lifting assembly 2 for cooperating with the pressure roller to rise and fall, and the lifting assembly 2 is installed on a bracket; when the conveyor belt is raised in conjunction with the lifting assembly 1, the pressure roller is lowered in conjunction with the lifting assembly 2, and cooperates with the conveyor belt to press the material to be conveyed.

[0008] As a further improvement of the present invention, the conveying assembly also includes a connecting frame, several conveyor belts are installed on the connecting frame, and the lifting assembly is connected to the connecting frame, and the conveyor belts are synchronously raised or lowered by lifting the connecting frame; the pressure roller cooperates with several conveyor belts to press the material to be transported at the same time.

[0009] As a further improvement of the present invention, the lifting component 2 includes two connecting parts and two actuators 1; the two connecting parts are respectively located at the two ends of the pressure roller, and are used to connect the ends of the pressure roller to slide up and down; the two actuators 1 are respectively arranged corresponding to one of the connecting parts, and are used to cooperate with the pressure roller to slide up and down on the connecting parts; the actuator 1 drives the pressure roller to move upward and supports the pressure roller, and by releasing the support action, the pressure roller moves downward under the action of gravity.

[0010] As a further improvement of the present invention, the actuator 1 is a pneumatic push rod or a hydraulic push rod.

[0011] As a further improvement of the present invention, a buffer is provided between the actuator 1 and the end of the pressure roller. One end of the buffer abuts against the actuator 1 and the other end abuts against the pressure roller, for providing buffering for the pressure roller after it moves downward under the action of gravity.

[0012] As a further improvement of the present invention, the end of the conveying roller away from the baffle is inclined toward the direction in which the material to be conveyed is required to be conveyed, and an acute angle is formed between the axis of the conveying roller and the baffle to form a displacement of the material to be conveyed in the first direction and the second direction.

[0013] As a further improvement of the present invention, the plurality of conveying rollers are distributed along the second direction, and adjacent conveying rollers in the direction are driven by transmission members, and at least one of the conveying rollers is driven by the transmission member in cooperation with the driving member.

[0014] As a further improvement of the present invention, the conveying rollers distributed along the second direction are formed into a column, and several columns are provided in the first direction, and at least one conveying roller in each column is transmitted through the cooperation of a transmission member and a driving member.

[0015] As a further improvement of the present invention, the output end of the driving member is connected to a first rotating shaft, and each conveying roller that is conveyed through the transmission member and the driving member is driven by the transmission member and the first rotating shaft to form a cooperation with the driving member.

[0016] As a further improvement of the present invention, a plurality of conveyor belts are respectively located between two adjacent rows of conveyor rollers and / or between the conveyor rollers and the baffle.

[0017] As a further improvement of the present invention, the transfer assembly includes two swing arms, a driver for driving the two swing arms to swing back and forth, and a negative pressure suction device installed on the swing arms. The driver drives the swing arms to swing and drives the negative pressure suction device to move back and forth between the first position and the second position; the two swing arms rotate through a fulcrum at a fixed position.

[0018] As a further improvement of the present invention, the negative pressure suction device includes a connecting shaft for connecting the swing arm, a frame installed on the connecting shaft, and a plurality of negative pressure suction cups installed on the frame; the frame is rotatably installed on the connecting shaft.

[0019] As a further improvement of the present invention, the invention further comprises a balancing rod, the balancing rod being rotatably connected to the frame and also being rotatably connected to a second fulcrum at a fixed position; when the swing arm swings, the balancing rod swings synchronously and maintains the frame in a horizontal state; When the swing arm swings, the position angular velocity of the connection between the swing arm and the connecting shaft is the same as the position angular velocity of the connection between the balance bar and the frame.

[0020] As a further improvement of the present invention, fulcrum one and fulcrum two are both located on a connecting member, and the connecting member has a connecting portion for connecting the swing arm and the balance bar, and the swing arm and the balance bar are rotatably connected to the connecting portion; the connecting member is used to be fixedly connected to the external bracket.

[0021] As a further improvement of the present invention, the driver includes an actuator, a second rotating shaft, and two gears arranged on the second rotating shaft. The actuator is linked to the second rotating shaft, and the second rotating shaft is driven to rotate by the actuator. The positions of the relatively corresponding gears on the two swing arms are provided with external teeth arranged along a circular arc trajectory. The gears are engaged with the external teeth and the swing arms are driven to swing by the rotation of the second rotating shaft.

[0022] As a further improvement of the present invention, the connecting member is further provided with a connecting hole for passing the second rotating shaft, the second rotating shaft is installed in the connecting hole through a bearing, and the displacement of the second rotating shaft is limited by the connecting hole.

[0023] A printing device comprises a printing component and a conveying mechanism for calibrating and stabilizing conveying as described in any one of the above-mentioned improved solutions, wherein the conveying mechanism is used to convey the material to be conveyed to the printing component for printing.

[0024] The beneficial effects of the present invention are: 1. The conveyor roller provides bidirectional displacement to drive hard materials to automatically abut against the baffle for calibration, significantly improving calibration efficiency.

[0025] 2. After the material is calibrated, the conveyor belt is lifted and the pressure rollers simultaneously press down to form a stable clamp, eliminating slippage or deviation caused by uneven contact, ensuring the single direction of conveyance and improving printing / cutting accuracy.

[0026] 3. Intelligent transfer components automate the entire process of material acquisition, calibration, and transmission, significantly reducing the need for manual operation, and are particularly suitable for the continuous production of large-sized hard materials.

[0027] 4. Simple structure and low implementation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic top view of the overall structure of the present invention; Figure 3 It is a side view schematic diagram of the overall structure of the present invention; Figure 4 for Figure 1 A magnified schematic diagram of part A in FIG; Figure 5 for Figure 3 A magnified schematic diagram of part B in FIG. Figure 6 Schematic diagram of the transmission member matching structure between the conveying rollers of the present invention; Figure 7 This is a schematic diagram of the structure of the connection frame and the conveyor belt of the present invention; Figure 8 This is a partial front view of the bracket of the present invention; Figure 9 It is a three-dimensional schematic diagram of the transfer assembly of the present invention; Figure 10 It is a schematic side view of the structure of the transfer assembly of the present invention; Figure 11 A schematic diagram of the three-dimensional structure of the transfer assembly of the present invention with the external support and some components hidden; Figure 12 for Figure 11 Enlarged view of part C in .

[0029] Figure numbers: 1. Bracket; 11. Baffle; 2. Conveying assembly; 21. Conveying roller; 22. Driving member; 23. Conveyor belt; 24. Lifting assembly 1; 25. Connecting frame; 26. First rotating shaft; 3. Pressure roller assembly; 31. Pressure roller; 32. Lifting assembly 2; 33. First connecting member; 34. Actuator 1; 35. Buffer; 4. Transfer assembly; 41. Swing arm; 411. External teeth; 42. Driver; 421. Actuator; 422. Second rotating shaft; 423. Gear; 43. Negative pressure suction device; 431. Connecting shaft; 432. Frame; 433. Negative pressure suction cup; 44. Fulcrum 1; 45. Balance bar; 46. Fulcrum 2; 47. Second connecting member; 471. Connecting hole; 5. Transmission member. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0031] Reference Figure 1-12 As shown, A transmission mechanism for calibrating and stabilizing transmission, comprising Bracket 1; The conveying assembly 2 is mounted on the bracket 1 and is used to carry the material to be conveyed and convey the material to the target location; The pressure roller assembly 3 is installed on the bracket 1 and is used to cooperate with the conveying assembly 2 to press the material to be conveyed; The transfer assembly 4 is mounted on the bracket 1 and is used to transfer the material to be delivered at the first position to the second position, where the second position is the position where the conveying assembly 2 is used to carry the material to be delivered; The conveying assembly 2 includes a plurality of conveying rollers 21, a driving member 22 for driving the conveying rollers 21 to rotate, a plurality of conveying belts 23, and a lifting assembly 24; The bracket 1 is provided with a baffle 11, which is used for the edge of the material to be conveyed to abut against; the conveying roller 21 is used to convey the material to be conveyed and to form a first direction and a second direction displacement of the material to be conveyed until the material to be conveyed abuts against the baffle 11, the first direction being the displacement direction of the material to be conveyed toward the baffle 11, and the second direction being the direction in which the material to be conveyed needs to be conveyed; After the material to be conveyed abuts against the baffle 11, the conveyor belt 23 cooperates with the lifting assembly 24 to lift and raise the material to be conveyed, and the conveyor belt 23 is raised to exceed the horizontal height of the conveying roller 21; The pressing roller assembly 3 cooperates with the raised conveyor belt 23 to press the material to be conveyed; The material to be delivered is hard material.

[0032] In this solution, the driving member 22 drives the conveyor roller 21 to rotate synchronously. After the hard material (such as plate material, acrylic material, or glass) is placed on the conveyor roller 21 by the transfer component 4, the rotation of the conveyor roller 21 pushes the material to displace in the second direction (the conveying direction). At the same time, the rotation of the conveyor roller 21 causes the material to displace in the first direction, causing it to gradually move closer to the baffle 11. When the edge of the material abuts the baffle 11, the position calibration is completed. Through the bidirectional displacement action of the conveyor roller 21 and the limiting function of the baffle 11, the material is automatically calibrated during the conveying process without the need for manual intervention, significantly improving the calibration efficiency and being suitable for the stable conveying of hard materials. With the help of the transfer component 4, the material can be transferred to the conveyor roller 21, and the entire process of material acquisition, material transfer, material calibration, and material transfer can be formed. This mechanism is particularly suitable for printing equipment and can transfer and calibrate hard materials to be printed, facilitating high-precision printing.

[0033] This automatic calibration method does not require human intervention, realizes the coordinated displacement of materials in two directions, and does not require manual adjustment of limit blocks, solving the problem of traditional calibration relying on experience. The material to be delivered can be placed on the conveying roller 21 with the help of the transfer component 4, and has low requirements for the placement position. This solution can form an efficient and simple structural calibration solution for the material to be delivered, which is especially suitable for large-sized materials to be delivered.

[0034] In this embodiment, the material to be conveyed can be made of a hard material, such as sheet material, acrylic, or glass, which can form a more stable fit with the baffle 11. The calibration mechanism is optimized for the rigidity of the hard material, improving positioning accuracy. Of course, flexible materials can also be used to form a fit with the baffle 11, such as wide-format rigid paper (which is still a flexible material in nature).

[0035] The driving member 22 may be a motor, and the first direction and the second direction are combined to form a movement direction that gradually approaches the baffle 11 and gradually approaches the desired conveying direction of the material to be conveyed.

[0036] After the material to be conveyed has been aligned against the baffle 11, the lifting assembly 24 raises the conveyor belt 23 to a position above the conveyor rollers 21. At this point, the conveyor belt 23 directly contacts the bottom surface of the material, replacing the conveyor rollers 21 to continue conveying the material in the second direction. This operation reduces the time that the baffle 11 and the edge of the material are in contact, while also concentrating the conveying effect in a single direction, resulting in higher conveying efficiency. The lifting assembly 24 can initiate the raising of the conveyor belt 23 when the conveyor rollers 21 have been operating for a fixed period of 10 seconds, 20 seconds, or 20 seconds, confirming that the material to be conveyed has reached the baffle 11. Alternatively, a sensor (e.g., an infrared sensor or a pressure sensor, positioned on the baffle 11 to contact the material to be conveyed, or an infrared sensor positioned near the baffle 11 to detect the material's proximity to the baffle 11) can be added. This sensor triggers when the material to be conveyed reaches the baffle 11. The sensor's trigger signal triggers the raising of the lifting assembly 24, which then descends back below the conveyor rollers 21 after the material is conveyed.

[0037] Reference Figure 1 、 2 As shown in Figures 7 and 8, the conveyor belt 23 is driven by the lifting component 24 to achieve vertical lifting. Before the material is conveyed to the target position, the lifting component 24 raises the conveyor belt 23 to a position higher than the initial position. At this time, the pressure roller assembly 3 is pressed down synchronously to form a clamping area with the conveyor belt 23, evenly pressing the surface of the material. Through the lifting and lowering coordination mechanism, the material is stably constrained in the vertical direction, and the conveying coordination is more uniform during the conveying process, reducing the problem of conveying deviation caused by uneven contact. In addition, the compression action can also provide resistance to deviation limitation, which can limit the problem of material deviation and avoid horizontal deviation caused by uneven gap between the conveyor belt 23 and the pressure roller 31.

[0038] For specific settings, refer to Figure 1 、 2 As shown in Figures 3, 4, and 5, the pressure roller assembly 3 includes a pressure roller 31 and a lifting assembly 2 32 for cooperating with the pressure roller 31 to rise and fall, and the lifting assembly 2 32 is installed on the bracket 1; when the conveyor belt 23 is raised in cooperation with the lifting assembly 1 24, the pressure roller 31 is lowered in cooperation with the lifting assembly 2 32 to cooperate with the conveyor belt 23 to press the material to be delivered.

[0039] Lifting assembly 2 32 and lifting assembly 1 24 can be linked via a control system or timed. When conveyor belt 23 rises, lifting assembly 2 32 drives pressing roller 31 to descend synchronously. Of course, this synchronization is not required. For example, conveyor belt 23 can be raised to a certain height before pressing roller 31 descends to compress the material. This bidirectional compression action results in faster compression and higher overall efficiency.

[0040] In order to facilitate the synchronous operation of multiple conveyor belts 23, refer to Figure 7 As shown, in an optional embodiment, the conveying component 2 also includes a connecting frame 25, a plurality of conveyor belts 23 are installed on the connecting frame 25, and the lifting component 24 is connected to the connecting frame 25, and the conveyor belts 23 are synchronously raised or lowered by lifting the connecting frame 25; the pressure roller 31 cooperates with the plurality of conveyor belts 23 to press the material to be transported at the same time.

[0041] The connecting frame 25 is driven by the lifting assembly 1 24, causing all conveyor belts 23 to rise and fall synchronously. The pressure roller 31 spans across multiple conveyor belts 23, forming a continuous pressure surface with all conveyor belts 23 during the lifting process. This structure, through the rigid connecting frame 25, ensures high consistency among the multiple conveyor belts 23, avoiding the uneven pressure and high control precision required due to single-point lifting. Furthermore, the simultaneous pressure exerted by the pressure roller 31 on multiple conveyor belts 23 further disperses local stress, preventing deformation of hard materials (such as decorative panels) due to excessive pressure at a single point.

[0042] As an optional embodiment, the lifting assembly 2 32 includes two first connecting members 33 and two actuators 1 34. The two first connecting members 33 are located at both ends of the pressure roller 31, respectively, for connecting the ends of the pressure roller 31 so that they can slide up and down. The two actuators 1 34 are respectively provided corresponding to one of the first connecting members 33 and are used to cooperate with the pressure roller 31 to slide up and down on the first connecting members 33. The actuators 1 34 drive the pressure roller 31 upward and support the pressure roller 31. By releasing the support, the pressure roller 31 can move downward under the action of gravity.

[0043] The two ends of the pressure roller 31 form a sliding pair with the bracket 1 through the first connecting member 33. The actuator 1 34 (such as an electric push rod, a hydraulic push rod, a pneumatic push rod, etc.) drives the pressure roller 31 to move vertically along the first connecting member 33. The two actuators 1 34 synchronously control the lifting stroke of the two ends of the pressure roller 31. For specific settings, refer to Figure 4 、 5 As shown in FIG, the pressure roller 31 may have sliders at both ends, which are slidably connected to the first connecting member 33. The sliders are integrated with bearings. The ends of the pressure roller 31 are fixedly connected to the inner ring of the bearings, and the outer ring of the bearings is embedded in the sliders and fixedly connected to the sliders. In this case, the sliders form a bearing seat and are connected to the first connecting member 33 for up and down movement. This up and down movement connection can use a keyway to allow the first connecting member 33 and the sliders to slide up and down, but with lateral limit to prevent them from falling out during the sliding process. Actuator 1 34 can be mounted on bracket 1.

[0044] Normally, actuator 1 34 supports roller 31 in a high position. When compaction is required, actuator 1 34 releases its supporting force (for example, if actuator 1 34 is a hydraulic or pneumatic push rod, the hydraulic or pneumatic control is released. Gravity then forces roller 31 downward, allowing the push rod to retract). Then, roller 31 freely falls to the surface of the material under the influence of gravity. This gravity-driven compaction eliminates the need for a complex force control system, simplifying the structure and reducing costs. Furthermore, the freely falling roller 31 adapts to changes in material thickness, preventing damage from overpressure.

[0045] Preferably, actuator 1 34 is a pneumatic or hydraulic push rod. When the pneumatic or hydraulic push rod releases the air or hydraulic pressure, it slowly releases the pressure to create damping, allowing the pressure roller 31 to press down slowly, preventing it from hitting the material surface and causing damage. This absorbs the impact of contact between the pressure roller 31 and the material, reducing noise and wear caused by rigid impact.

[0046] As an alternative to providing further buffering, refer to Figure 4 、 5 As shown, a buffer member 35 is disposed between actuator 1 34 and the end of pressure roller 31. One end of the buffer member 35 abuts actuator 1 34, and the other end abuts pressure roller 31, providing cushioning for the downward movement of pressure roller 31 under the action of gravity. Based on the aforementioned solution of using the slider as the bearing seat, the end of the buffer member 35 corresponding to the pressure roller 31 can abut the slider.

[0047] A buffer 35 (such as a spring) is installed between the pneumatic push rod and the pressure roller 31. The spring can be coaxial with the push rod. The push rod serves as a guide to prevent uncontrolled deformation and damage to the spring during downward pressure. When the pressure roller 31 falls freely, the buffer 35 absorbs the impact energy through elastic deformation and converts the remaining kinetic energy into slowly released elastic potential energy. This design ensures clamping force while preventing surface microcracks caused by instantaneous impact on hard materials (such as sheet materials, acrylic, and glass), achieving a balanced balance between positioning accuracy and material protection.

[0048] In the specific setting, the end of the conveying roller 21 away from the baffle 11 is inclined toward the direction in which the material to be conveyed is required to be conveyed, and an acute angle is formed between the axis of the conveying roller 21 and the baffle 11 to form a displacement of the material to be conveyed in the first direction and the second direction.

[0049] In this embodiment, the axis of the conveyor roller 21 forms an acute angle (e.g., 30° to 90°, excluding the 90° endpoint) with the baffle 11. This allows the surface of the conveyor roller 21 to generate a force component when contacting the material: a force component in the second direction propels the material forward, while a force component in the first direction propels the material toward the baffle 11. This tilted design directly achieves bidirectional displacement through mechanical structure, without the need for additional sensors or control programs. Sensors (e.g., infrared sensors or pressure sensors, with the pressure sensor positioned on the baffle 11 to contact the material, and the infrared sensor positioned near the baffle 11 to detect the material's proximity to the baffle 11) can also be used to detect whether the material being conveyed has completed calibration, but these are not required. The calibration of the material conveyed by the conveyor roller 21 can also be determined by a fixed conveying time. For example, after 15 seconds of conveying by the conveyor roller 21, it can be determined that the edge of the material has reached the baffle 11. This time is merely an example, and those skilled in the art can set it to 10 seconds or 20 seconds based on actual conditions.

[0050] The angle formed between the axis of the conveying roller 21 and the baffle 11 can be adjusted according to the actual conveying stroke. For example, if the stroke is short, the angle can be smaller; if the stroke is long, the angle can be larger. When the angle is large, the thrust toward the baffle 11 is relatively small, which will not cause excessive pressure on the baffle 11. At this time, it also reduces the friction loss between the baffle 11 and the material to be conveyed, avoids positioning deviation caused by violent collisions, and other problems. However, the stroke required for calibrating the material to be conveyed will also be longer. When the angle is small, the stroke for calibrating the material to be conveyed is short, but it is also easy to cause greater pressure on the baffle 11, and it is also easy to generate greater friction and loss between the two. Therefore, those skilled in the art can choose according to the required angle.

[0051] In order to facilitate the synchronous movement of multiple conveying rollers 21, in an optional embodiment, referring to Figure 1 、 2 As shown in , 6 , several conveying rollers 21 are distributed along the second direction, and the conveying rollers 21 adjacent to each other in the direction are driven by the transmission member 5 , and at least one of the conveying rollers 21 is driven by the transmission member 5 in cooperation with the driving member 22 .

[0052] Concrete transmission member 5 can adopt belt or chain.Correspondingly, gear can be provided on the transmission roller 21, and is used for matching belt or chain.

[0053] Adjacent conveyor rollers 21 are linked by transmission element 5 and are also linked to the drive element 22. This allows the drive element 22 to simultaneously drive these conveyor rollers 21, achieving more synchronized movement. This tandem transmission ensures consistent rotational speed across the entire row of conveyor rollers 21, preventing material shifting due to local speed differences. The linked design of transmission element 5 simplifies power distribution and reduces manufacturing costs.

[0054] Concrete transmission member 5 can adopt belt or chain.Correspondingly, gear can be provided on the transmission roller 21, and is used for matching belt or chain.

[0055] In a further configuration, the conveying rollers 21 distributed along the second direction are arranged as a column, and several columns are arranged in the first direction, and at least one conveying roller 21 in each column is transmitted through the transmission member 5 and the driving member 22 .

[0056] A plurality of rows of conveying rollers 21 are provided in the first direction, and each row is connected to the driving member 22 via a transmission member 5. When the material enters, the plurality of rows of conveying rollers 21 simultaneously push the material to move in the first direction and the second direction.

[0057] As a solution to further simplify the driving structure, the output end of the driving member 22 is connected to the first rotating shaft 26, and each conveying roller 21 that is transmitted through the transmission member 5 and the driving member 22 is transmitted through the transmission member 5 and the first rotating shaft 26 to form a cooperation with the driving member 22.

[0058] The first rotating shaft 26 can be equipped with multiple gears to connect the transmission members 5 of each column of conveyor rollers 21 to the driver 22. The driver 22 rotates the first rotating shaft 26, synchronously driving each transmission member 5 on the first rotating shaft 26. These transmission members 5 then rotate together with each column of conveyor rollers 21. The first rotating shaft 26 and the driver 22 can be connected via a coupling, or they can be driven by a gear train, chain, or belt. A single driver 22 distributes power across multiple columns via the first rotating shaft 26, simplifying the transmission system and reducing costs.

[0059] In the specific distribution of the conveyor belts 23, a plurality of conveyor belts 23 are respectively located between two adjacent rows of conveyor rollers 21 and / or between the conveyor rollers 21 and the baffle 11, referring to Figure 1 、 2 , 6. This setting can support and convey the materials to be conveyed more evenly.

[0060] For further settings, refer to Figure 9-12As shown, the transfer assembly 4 includes two swing arms 41, a driver 42 for driving the two swing arms 41 to swing back and forth, and a negative pressure suction device 43 installed on the swing arms 41. The driver 42 drives the swing arms 41 to swing and moves the negative pressure suction device 43 back and forth between the first position and the second position; the two swing arms 41 rotate through a fulcrum 44 at a fixed position.

[0061] In this solution, driver 42 drives swing arm 41 to swing about fulcrum 44, driving negative pressure suction device 43 to reciprocate between two fixed positions (a first position and a second position). When swing arm 41 swings to the first position, negative pressure suction device 43 absorbs the print medium; when swing arm 41 swings to the second position, negative pressure suction device 43 releases the print medium to the conveyor assembly. The single-degree-of-freedom swing of swing arm 41 simplifies the mechanical design of the transfer path and reduces reliance on drive accuracy. This makes it particularly suitable for transporting rigid, plate-like materials.

[0062] The swing arm 41 can be rotatably connected to the fulcrum 1 44, allowing the swing arm 41 to rotate with the fulcrum as a hinge point, ensuring a stable and controllable trajectory for each swing. The driver 42 can be driven by a motor or a power push rod, and the power push rod can be a pneumatic push rod, a gas pressure push rod, an electric push rod, etc. The negative pressure suction device 43 can be composed of a negative pressure suction cup 433 and an air pump. The air pump can be used to drive the negative pressure suction cup 433 to generate negative pressure, thereby adsorbing the hard plate-shaped printing medium.

[0063] As an implementation scheme that can make the printing medium transfer process more stable, the negative pressure suction device 43 includes a connecting shaft 431 for connecting the swing arm 41, a frame 432 installed on the connecting shaft 431, and a number of negative pressure suction cups 433 installed on the frame 432; the frame 432 is rotatably installed on the connecting shaft 431.

[0064] Frame 432 is hinged to swing arm 41 via connecting shaft 431, allowing frame 432 to rotate about connecting shaft 431. As swing arm 41 swings, the frame 432's rotational freedom can be used to adjust the print medium's position. For example, in the first position, the print medium is flat. Rotation of frame 432 allows the print medium to be conveyed in a flat position as much as possible, releasing it onto the conveyor assembly in a flat position. The distributed layout of multiple negative pressure suction cups 433 further enhances uniform suction force, preventing localized stress concentration and material deformation.

[0065] As a solution to further stabilize the state control during the transfer of the auxiliary printing medium, this solution can also be equipped with a balance bar 45, which is rotatably connected to the frame 432 and is also rotatably connected to a fixed fulcrum 2 46; when the swing arm 41 swings, the balance bar 45 swings synchronously and keeps the frame 432 in a horizontal state. This solution is different from Figure 1 Demonstrated implementation.

[0066] One end of the balance bar 45 is hinged to the frame 432, and the other end swings about pivot point 2 46. When the swing arm 41 drives the frame 432 to move, the balance bar 45 suppresses tilt of the frame 432 by synchronously swinging, keeping the frame 432 in a horizontal position (for example, to ensure the smooth release of hard sheet materials during transport). The distance between pivot point 2 46 and pivot point 1 44 is equal to the distance between the connection point between the balance bar 45 and the frame 432 and the connection point between the connecting shaft 431 and the swing arm 41. This further ensures the synchronization and stability of the balance bar 45 and the swing arm 41, and better controls the state of the frame 432. Of course, a certain deviation in this distance will cause the frame 432 to tilt to a certain extent, which will also affect the state of the printing medium. However, if it meets the requirements, a certain deviation in this distance is acceptable.

[0067] Preferably, when the swing arm 41 swings, the position angular velocity of the connection between the swing arm 41 and the connecting shaft 431 is the same as the position angular velocity of the connection between the balance bar 45 and the frame 432 .

[0068] By matching the angular velocities of swing arm 41 and balance bar 45, the motion trajectory of frame 432 is ensured to be purely translational (i.e., without rotational components). This design avoids the problem of suction cup tilt caused by angular velocity differences in traditional swing mechanisms, improving the positioning accuracy of rigid sheet materials. Furthermore, it offers a simple structure and stable transport. The translational motion of frame 432 can be achieved solely through mechanical design.

[0069] In order to facilitate installation and precision control, fulcrum 1 44 and fulcrum 2 46 are both located on a second connecting member 47, and the second connecting member 47 has a connecting portion for connecting the swing arm 41 and the balance bar 45, and the swing arm 41 and the balance bar 45 are rotatably connected to the connecting portion; the second connecting member 47 is used to be fixedly connected to the external bracket.

[0070] The second connecting member 47 serves as a common mounting base for pivot point 1 44 and pivot point 2 46 and is secured to the printer frame via an external bracket. The direct mounting of the swing arm 41 and balance bar 45 on the second connecting member 47 ensures proper pivot spacing and prevents deflection of the frame 432 due to assembly errors. The modular design of the second connecting member 47 simplifies disassembly and maintenance of the entire mechanism. Manufacturing the second connecting member 47 requires only setting pivot points at fixed locations. For example, drilling holes in the second connecting member 47 and bolting the swing arm 41 and balance bar 45 together to form pivot point 1 44 and pivot point 2 46.

[0071] As an optional implementation scheme of the driver 42, the driver 42 includes an actuator 421, a second rotating shaft 422, and two gears 423 arranged on the second rotating shaft 422. The actuator 421 is linked to the second rotating shaft 422, and the second rotating shaft 422 is driven to rotate by the actuator 421. The positions of the corresponding gears 423 on the two swing arms 41 are provided with external teeth 411 arranged along a circular arc trajectory. The gears 423 engage with the external teeth 411 and drive the swing arms 41 to swing through the rotation of the second rotating shaft 422.

[0072] Actuator 421 (e.g., a servo motor or stepper motor) drives the second rotating shaft 422 to rotate (this can be achieved using a worm gear or bevel gear 423). This drives gear 423 to mesh with the external teeth 411 of swing arm 41, converting the rotational motion into reciprocating swing of swing arm 41. The meshing path between gear 423 and external teeth 411 is designed to be circular, aligning with the swing path of swing arm 41 around pivot point 44, thereby reducing positioning errors caused by transmission backlash.

[0073] In a further configuration, a connecting hole 471 for passing the second rotating shaft 422 is further provided on the second connecting member 47 . The second rotating shaft 422 is installed in the connecting hole 471 through a bearing, and the connecting hole 471 limits the displacement of the second rotating shaft 422 .

[0074] The second rotating shaft 422 is limited by the connecting hole 471, which can improve the meshing stability between the gear 423 and the external tooth 411, ensure the transmission cooperation between the two, and suppress axial movement and radial runout (such as vibration transmission when the gear 423 is engaged).

[0075] The connecting hole 471 can also be located on the second connecting member 47, which facilitates the one-time production of the second connecting member 47. After the second connecting member 47 is fixedly connected to the external bracket by bolts, the positions of the connecting hole 471, fulcrum 1 44, and fulcrum 2 46 on the second connecting member 47 can be determined, thereby ensuring the accuracy of each installation.

[0076] The above mainly introduces a conveying mechanism for calibration and stable transmission. Its application in a printing device can also form the following scheme: a printing device, comprising a printing component and a conveying mechanism for calibration and stable transmission as any of the above preferred schemes, wherein the conveying mechanism is used to convey the material to be delivered to the printing component for printing.

[0077] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A transmission mechanism for calibration and stable transmission, characterized in that: include Bracket; A conveying assembly is mounted on the bracket and is used to carry the material to be conveyed and convey the material to a target location; The pressure roller assembly is installed on the bracket and is used to cooperate with the conveying assembly to press the material to be conveyed; A transfer assembly, mounted on the bracket, for transferring the material to be delivered at the first position to a second position, where the second position is a position where the conveying assembly is used to carry the material to be delivered; The conveying assembly includes a plurality of conveying rollers, a driving member for driving the conveying rollers to rotate, a plurality of conveying belts, and a lifting assembly; The bracket is provided with a baffle, which is used for the edge of the material to be conveyed to abut against; the conveying roller is used to convey the material to be conveyed and to form a first direction and a second direction displacement of the material to be conveyed until the material to be conveyed abuts against the baffle, the first direction being the displacement direction of the material to be conveyed toward the baffle, and the second direction being the direction in which the material to be conveyed needs to be conveyed; After the material to be conveyed abuts against the baffle, the conveyor belt cooperates with the lifting assembly to lift and raise the material to be conveyed, and the conveyor belt is raised to exceed the horizontal height of the conveying roller; The pressing roller assembly cooperates with the raised conveyor belt to press the material to be conveyed; The material to be delivered is hard material.

2. The conveying mechanism for calibration and stable conveying according to claim 1, characterized in that: The pressure roller assembly includes a pressure roller and a lifting assembly 2 for cooperating with the pressure roller to rise and fall, and the lifting assembly 2 is installed on a bracket; when the conveyor belt is raised in conjunction with the lifting assembly 1, the pressure roller is lowered in conjunction with the lifting assembly 2 to cooperate with the conveyor belt to press the material to be delivered.

3. The conveying mechanism for calibration and stable conveying according to claim 2, characterized in that: The conveying assembly also includes a connecting frame, a plurality of conveyor belts are installed on the connecting frame, and a lifting assembly is connected to the connecting frame, and the conveyor belts are synchronously raised or lowered by lifting the connecting frame; the pressure roller cooperates with the plurality of conveyor belts to press the material to be conveyed at the same time.

4. The conveying mechanism for calibration and stable conveying according to claim 2, characterized in that: The lifting component 2 includes two first connecting members and two actuators 1; the two first connecting members are respectively located at the two ends of the pressure roller, and are used to connect the ends of the pressure roller so that they can slide up and down; the two actuators 1 are respectively arranged corresponding to one of the first connecting members, and are used to cooperate with the pressure roller to slide up and down on the first connecting members; the actuator 1 drives the pressure roller to move upward and supports the pressure roller, and by releasing the support effect, the pressure roller moves downward under the action of gravity.

5. The conveying mechanism for calibration and stable conveying according to claim 4, characterized in that: The actuator 1 is a pneumatic push rod or a hydraulic push rod.

6. The conveying mechanism for calibration and stable conveying according to claim 4 or 5, characterized in that: A buffer is provided between the actuator 1 and the end of the pressure roller. One end of the buffer abuts against the actuator 1, and the other end abuts against the pressure roller, for providing buffering for the pressure roller after it moves downward under the action of gravity.

7. The conveying mechanism for calibration and stable conveying according to claim 1, characterized in that: One end of the conveying roller away from the baffle is inclined toward the direction in which the material to be conveyed is required to be conveyed, and an acute angle is formed between the axis of the conveying roller and the baffle to form a displacement of the material to be conveyed in a first direction and a second direction.

8. The conveying mechanism for calibration and stable conveying according to claim 7, characterized in that: The plurality of conveying rollers are distributed along the second direction, and the conveying rollers adjacent to each other in the direction are driven by a transmission member, and at least one of the conveying rollers is driven by the transmission member in cooperation with the driving member.

9. The conveying mechanism for calibration and stable conveying according to claim 8, characterized in that: The conveying rollers distributed along the second direction are formed into a column, and a plurality of columns are arranged in the first direction, and at least one conveying roller in each column is transmitted through the cooperation of the transmission member and the driving member.

10. The conveying mechanism for calibration and stable conveying according to claim 9, characterized in that: The output end of the driving member is connected to the first rotating shaft, and each conveying roller that is conveyed through the transmission member and the driving member is transmitted through the transmission member and the first rotating shaft to form a cooperation with the driving member.

11. The conveying mechanism for calibration and stable conveying according to claim 9 or 10, characterized in that: The plurality of conveyor belts are respectively located between two adjacent rows of conveyor rollers and / or between the conveyor rollers and the baffle.

12. The conveying mechanism for calibration and stable conveying according to claim 1, characterized in that: The transfer assembly includes two swing arms, a driver for driving the two swing arms to swing back and forth, and a negative pressure suction device installed on the swing arms. The driver drives the swing arms to swing and drives the negative pressure suction device to move back and forth between a first position and a second position; the two swing arms rotate through a fulcrum at a fixed position.

13. The conveying mechanism for calibration and stable conveying according to claim 12, characterized in that: The negative pressure suction device includes a connecting shaft for connecting a swing arm, a frame installed on the connecting shaft, and a plurality of negative pressure suction cups installed on the frame; the frame is rotatably installed on the connecting shaft.

14. The conveying mechanism for calibration and stable conveying according to claim 13, characterized in that: The frame also includes a balancing rod, which is rotatably connected to the frame and is also rotatably connected to a second fulcrum at a fixed position; when the swing arm swings, the balancing rod swings synchronously and keeps the frame in a horizontal state; When the swing arm swings, the position angular velocity of the connection between the swing arm and the connecting shaft is the same as the position angular velocity of the connection between the balance bar and the frame.

15. The conveying mechanism for calibration and stable conveying according to claim 14, characterized in that: The first fulcrum and the second fulcrum are both located on a second connecting member, and the second connecting member has a connecting portion for connecting the swing arm and the balance bar, and the swing arm and the balance bar are rotatably connected to the connecting portion; the second connecting member is used to be fixedly connected to the external bracket.

16. The conveying mechanism for calibration and stable conveying according to claim 15, characterized in that: The driver includes an actuator, a second rotating shaft, and two gears arranged on the second rotating shaft. The actuator is linked to the second rotating shaft, and the second rotating shaft is driven to rotate by the actuator. The positions of the corresponding gears on the two swing arms are provided with external teeth arranged along a circular arc trajectory. The gears are engaged with the external teeth and the swing arms are driven to swing by the rotation of the second rotating shaft.

17. The conveying mechanism for calibration and stable conveying according to claim 16, characterized in that: The second connecting member is further provided with a connecting hole for passing the second rotating shaft. The second rotating shaft is installed in the connecting hole through a bearing, and the displacement of the second rotating shaft is limited by the connecting hole.

18. A printing device, characterized in that: It comprises a printing component and a conveying mechanism for calibrated and stable conveying as described in any one of claims 1 to 17, wherein the conveying mechanism is used to convey the material to be conveyed to the printing component for printing.

Images