Conveying mechanism and printing apparatus for calibration and stabilization of the conveying

Abstract

The application discloses a conveying mechanism and printing equipment for calibrating and stabilizing conveying, which comprises a support, a conveying assembly, a compression roller assembly, a transfer assembly, a plurality of conveying rollers, a driving member, a plurality of conveying belts and a lifting assembly one. The support is provided with a baffle for the edge of the material to be conveyed to abut against. The conveying rollers are used for conveying the material to be conveyed and forming displacement of the material to be conveyed in a first direction and a second direction until the material to be conveyed abuts against the baffle. After the material to be conveyed abuts against the baffle, the conveying belts cooperate with the lifting assembly one to lift and raise the material to be conveyed, and the conveying belts exceed the horizontal height of the conveying rollers after being raised. The compression roller assembly cooperates with the raised conveying belts to compress the material to be conveyed. The material to be conveyed is a hard material. The scheme can improve the conveying efficiency and precision, and the 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

[0007] Bracket;

[0008] 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;

[0009] 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;

[0010] A transfer assembly is mounted on the bracket 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 is used to carry the material to be delivered;

[0011] 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;

[0012] The support is provided with a baffle for abutting the edge of the material to be conveyed; the conveying roller is used to convey the material to be conveyed and forms displacement of the material to be conveyed in a first direction and a second direction before the material to be conveyed abuts the baffle, the first direction being the displacement direction of the material to be conveyed towards the baffle, and the second direction being the direction in which the material to be conveyed needs to be conveyed;

[0013] After the material to be conveyed abuts the baffle, the conveying belt is lifted by the lifting assembly and the material to be conveyed is lifted, and the conveying belt is lifted to a height higher than the conveying roller;

[0014] The compression roller assembly compresses the material to be conveyed in cooperation with the lifted conveying belt;

[0015] The material to be conveyed is a hard material.

[0016] As a further improvement of the present application, the compression roller assembly comprises a compression roller and a lifting assembly two for lifting the compression roller, the lifting assembly two being installed on the support; when the conveying belt is lifted by the lifting assembly one, the compression roller is lowered by the lifting assembly two, and the conveying belt is compressed in cooperation with the material to be conveyed.

[0017] As a further improvement of the present application, the conveying assembly further comprises a connecting frame, a plurality of conveying belts are installed on the connecting frame, and the lifting assembly one is connected with the connecting frame and lifts or lowers the conveying belt by lifting the connecting frame; the compression roller simultaneously compresses the material to be conveyed in cooperation with the plurality of conveying belts.

[0018] As a further improvement of the present application, the lifting assembly two comprises two connectors and two actuators one; the two connectors are respectively located at the two ends of the compression roller for sliding connection of the end of the compression roller; the two actuators one are respectively arranged corresponding to one of the connectors and are used to slide the compression roller up and down on the connector; the actuator one drives the compression roller to move upwards and supports the compression roller, and releases the support to move the compression roller downwards under the action of gravity.

[0019] As a further improvement of the present application, the actuator one is a pneumatic push rod or a hydraulic push rod.

[0020] As a further improvement of the present application, a buffer is arranged between the actuator one and the end of the compression roller, one end of the buffer abuts the actuator one and the other end abuts the compression roller, and the buffer provides a buffer when the compression roller moves downwards under the action of gravity.

[0021] As a further improvement of the present application, the end of the conveying roller away from the baffle is inclined towards the direction in which the material to be conveyed needs to be conveyed, and an acute angle is formed between the axis of the conveying roller and the baffle to form displacement of the material to be conveyed in the first direction and the second direction.

[0022] As a further improvement of the application, several of the conveying rollers are distributed along the second direction and are driven by a transmission element between adjacent conveying rollers in this direction, and at least one of the conveying rollers is driven by the transmission element in cooperation with the drive element.

[0023] As a further improvement of the application, the conveying rollers distributed along the second direction are arranged as columns, several columns are arranged in the first direction, and at least one of the conveying rollers in each column is driven by a transmission element in cooperation with the drive element.

[0024] As a further improvement of the application, the output end of the drive element is connected with a first rotating shaft, and each of the conveying rollers driven by the transmission element in cooperation with the drive element is driven by the transmission element in cooperation with the first rotating shaft to form cooperation with the drive element.

[0025] As a further improvement of the application, several conveying belts are arranged between adjacent two columns of the conveying rollers and / or between the conveying rollers and the baffles.

[0026] As a further improvement of the application, the transfer assembly comprises two swing arms, a drive element for driving the two swing arms to swing back and forth, and a negative pressure suction device mounted on the swing arms, the drive element drives the swing arms to swing and moves the negative pressure suction device back and forth between the first position and the second position; the two swing arms are rotatable about a fixed position fulcrum one.

[0027] As a further improvement of the application, the negative pressure suction device comprises a connecting shaft for connecting the swing arms, a frame mounted on the connecting shaft, and several negative pressure suction cups mounted on the frame; the frame is rotatably mounted on the connecting shaft.

[0028] As a further improvement of the application, a balance bar is further included, the balance bar is rotatably connected with the frame and rotatably connected with a fixed position fulcrum two; when the swing arms swing, the balance bar swings synchronously and keeps the frame in a horizontal state.

[0029] When the swing arms swing, the angular velocity of the position of the connecting position of the swing arms and the connecting shaft is the same as the angular velocity of the position of the connecting position of the balance bar and the frame.

[0030] As a further improvement of the application, the fulcrum one and the fulcrum two are located on a connecting element, and the connecting element has a connecting part for connecting the swing arms and the balance bar, and the swing arms and the balance bar are rotatably connected with the connecting part; the connecting element is used for fixed connection with an external support.

[0031] As a further improvement of the present application, the driver comprises an actuator, a second rotating shaft, two gears arranged on the second rotating shaft, the actuator is linked with the second rotating shaft, the second rotating shaft is driven to rotate by the actuator, and the positions of the two corresponding gears on the swing arms are provided with external teeth arranged along a circular arc track, the gears are engaged with the external teeth and drive the swing arms to swing by the rotation of the second rotating shaft.

[0032] As a further improvement of the present application, the connecting piece is further provided with a connecting hole for penetrating the second rotating shaft, the second rotating shaft is installed in the connecting hole through a bearing and is limited to deviate by the connecting hole.

[0033] A printing device comprises a printing component and the conveying mechanism for calibration and stabilization of conveying according to any one of the above improvements, which is used for conveying materials to be conveyed to the printing component for printing.

[0034] The present application has the advantages of

[0035] 1. The conveying roller provides bidirectional displacement driving hard material automatic abutting against the baffle for calibration, and the calibration efficiency is significantly improved.

[0036] 2. After the calibration of the materials, the conveying belt is lifted and synchronously pressed down by the pressing roller to form stable clamping, the sliding or deviation caused by uneven contact is eliminated, the single direction of conveying is ensured, and the printing / cutting precision is improved.

[0037] 3. The intelligent combination of the transfer assembly realizes the automation of the whole process of material acquisition, calibration and conveying, greatly reduces the demand for manual operation, and is especially suitable for continuous production of large-size hard materials.

[0038] 4. The structure is simple, and the implementation cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a perspective view of the overall structure of the present application;

[0040] Figure 2 It is a top view of the overall structure of the present application;

[0041] Figure 3 It is a side view of the overall structure of the present application;

[0042] Figure 4 It is an enlarged view of A part in Figure 1

[0043] Figure 5 It is an enlarged view of B part in Figure 3

[0044] Figure 6 It is a schematic view of the driving member cooperation structure between the conveying rollers of the present application; ​​

[0045] Figure 7 Figure 1 is a schematic view of the connection frame and the conveying belt of the present application;

[0046] Figure 8 Figure 2 is a front view of the support part of the present application;

[0047] Figure 9 Figure 3 is a perspective view of the transfer assembly of the present application;

[0048] Figure 10 Figure 4 is a side view of the transfer assembly of the present application;

[0049] Figure 11 Figure 5 is a perspective view of the transfer assembly of the present application, with the outer support and some parts hidden;

[0050] Figure 12 Figure 6 is a schematic view of the C part in Figure 5. Figure 11

[0051] Figure 1 is a schematic view of the connection frame and the conveying belt of the present application; DETAILED DESCRIPTION

[0052] The present application will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0053] Referring to Figure 1, Figure 1-12

[0054] A conveying mechanism for calibrating and stabilizing conveying, comprising

[0055] a support 1;

[0056] a conveying assembly 2 mounted on the support 1, for carrying the material to be conveyed and conveying the material to be conveyed to a target position;

[0057] a compression roller assembly 3 mounted on the support 1, for cooperating with the conveying assembly 2 to compress the material to be conveyed;

[0058] a transfer assembly 4 mounted on the support 1, for transferring the material to be conveyed at a first position to a second position, which is the position for the conveying assembly 2 to carry the material to be conveyed.​​

[0059] 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;

[0060] 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;

[0061] 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;

[0062] The pressing roller assembly 3 cooperates with the raised conveyor belt 23 to press the material to be conveyed;

[0063] The material to be delivered is hard material.

[0064] 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.

[0065] 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.

[0066] The to-be-sent material in the scheme can be made of hard material, such as plate, acrylic, glass and the like, which can form a more stable cooperation with the baffle 11, and the calibration mechanism is optimized for the rigidity characteristics of the hard material, thereby improving the positioning accuracy. Of course, it is also not excluded that flexible materials can also cooperate with the baffle 11, such as wide printing hard paper (which is still essentially a flexible material).

[0067] The driving member 22 described above can be an electric motor, and the first direction and the second direction combined form a movement direction gradually approaching the baffle 11 and gradually approaching the required conveying direction of the to-be-sent material.

[0068] When the to-be-sent material abuts against the baffle 11 to complete the calibration, the lifting assembly 24 lifts the conveying belt 23 to a position higher than the conveying roller 21. At this time, the conveying belt 23 directly contacts the bottom surface of the material, replacing the conveying roller 21 to continue conveying the material in the second direction. In this work, the extrusion time of the baffle 11 and the edge of the to-be-sent material can be reduced, and the conveying effect can be more concentrated in a single direction, and the conveying efficiency is higher. The lifting of the conveying belt 23 by the lifting assembly 24 can be started based on the fixed time of 10 seconds, 20 seconds or 30 seconds of the conveying of the aforementioned conveying roller 21, which has basically determined that the to-be-sent material has reached the baffle 11. Of course, a sensor (such as an infrared sensor or a pressure sensor, the pressure sensor is arranged on the baffle 11 to abut against the to-be-sent material, and the infrared sensor is arranged near the baffle 11 to detect whether the material is close to the baffle 11) can be added to trigger when the to-be-sent material reaches the baffle 11, and the lifting action of the lifting assembly 24 is started through the trigger signal of the sensor, and after the feeding is completed, it is lowered to a state lower than the conveying roller 21.

[0069] Referring to Figure 1 , 2 , 7, the conveying belt 23 is vertically lifted by the driving of the lifting assembly 24. Before the material is conveyed to the target position, the lifting assembly 24 lifts the conveying belt 23 to a position higher than the initial position, and at this time the compression roller assembly 3 is synchronously pressed down to form a clamping area with the conveying belt 23, and uniformly press the surface of the material. Through the lifting cooperation mechanism, the material is stably constrained in the vertical direction, and the conveying cooperation is more uniform during the conveying process, reducing the problem of conveying deviation caused by uneven contact. In addition, the resistance of the deviation limiting can be provided through the pressing action, which can limit the material deviation problem and avoid the horizontal deviation caused by the gap between the conveying belt 23 and the compression roller 31.

[0070] In a specific arrangement, referring to Figure 1 , 2, 3, 4, 5, the compression roller assembly 3 includes a compression roller 31, for matching the compression roller 31 lifting and lowering assembly two 32, lifting assembly two 32 is installed on the support 1; when the conveyor belt 23 matching lifting assembly one 24 up, the compression roller 31 matching lifting assembly two 32 down, matching the conveyor belt 23 compression of the material to be sent.

[0071] Lifting assembly two 32 and lifting assembly one 24 can be linked through the control system, also can use timing matching. When the conveyor belt 23 up, lifting assembly two 32 drive compression roller 31 synchronous down, of course, can not be completely synchronized, for example, first to improve the conveyor belt 23 to a certain height, in the compression roller 31 down after the compression of the material. This compression is bidirectional, so the compression speed is faster, the overall efficiency is higher.

[0072] In order to facilitate the synchronous action of multiple conveyor belts 23, with reference to Figure 7 , in an alternative embodiment, the transmission assembly 2 also includes a connecting frame 25, several conveyor belts 23 are installed on the connecting frame 25, and the lifting assembly one 24 is connected with the connecting frame 25, and the lifting connecting frame 25 is used to lift or lower the conveyor belt 23 synchronously; the compression roller 31 is simultaneously matched with several conveyor belts 23 to compress the material to be sent.

[0073] The connecting frame 25 is driven by the lifting assembly one 24 to drive all the conveyor belts 23 to rise and fall synchronously. The compression roller 31 spans multiple conveyor belts 23 and forms a continuous compression surface with all the conveyor belts 23 during lifting. This structure ensures the height consistency of multiple conveyor belts 23 through the rigid connecting frame 25, avoiding uneven pressure caused by single-point lifting and high control precision requirements; at the same time, the synchronous compression of the compression roller 31 on multiple conveyor belts 23 further disperses the local stress, preventing hard materials (such as decorative plates) from deforming due to excessive pressure on a single point.

[0074] As an alternative embodiment, the lifting assembly two 32 includes two first connecting pieces 33 and two actuators one 34; the two first connecting pieces 33 are respectively located at the two ends of the compression roller 31, for the end of the compression roller 31 to slide up and down; the two actuators one 34 are respectively arranged corresponding to one of the first connecting pieces 33, and are used to match the compression roller 31 to slide up and down on the first connecting piece 33. The actuator one 34 drives the compression roller 31 to move upward and supports the compression roller 31, and releases the supporting action to allow the compression roller 31 to move downward under the action of gravity.

[0075] The two ends of the compression roller 31 form a sliding pair with the support 1 through the first connecting piece 33, and the actuator one 34 (such as an electric push rod, a hydraulic push rod, a pneumatic push rod, etc.) drives the compression roller 31 to move vertically along the first connecting piece 33. The two actuators one 34 control the lifting stroke of the two ends of the compression roller 31 synchronously. In a specific arrangement, with reference to Figure 4 , 5As shown in FIG. 1, the two ends of the compression roller 31 can have sliding blocks that are slidingly connected to the first connecting member 33, and bearings are integrated on the sliding blocks, the end portions of the compression roller 31 are fixedly connected to the inner rings of the bearings, and the outer rings of the bearings are embedded in the sliding blocks and fixedly connected to the sliding blocks, at this time, the sliding blocks form bearing seats, and the sliding blocks are connected to the first connecting member 33 to move up and down, and the up-and-down connection can be achieved by key groove matching, so that the first connecting member 33 and the sliding blocks can slide up and down, but are laterally limited and will not fall out during sliding. The actuator 34 can be installed on the support 1.

[0076] The actuator 34 normally supports the compression roller 31 in a high position, when it is necessary to compress the material, the actuator 34 releases the supporting force (for example, when the actuator 34 is a hydraulic push rod or a pneumatic push rod, the hydraulic control or the air pressure control is released, at this time, the compression roller 31 will fall under the action of gravity, and the push rod will be retracted), and the compression roller 31 freely falls to the surface of the material under the action of gravity. The gravity-driven compression mode does not need a complex force control system, simplifies the structure and reduces the cost; at the same time, the freely falling compression roller 31 can adapt to the change of the thickness of the material, and avoid damage to the material caused by overpressure.

[0077] Preferably, the actuator 34 is a pneumatic push rod or a hydraulic push rod. When the air pressure control and the hydraulic control of the pneumatic push rod and the hydraulic push rod are released, the slow release of the air pressure and the hydraulic pressure can form damping, so that the compression roller 31 can slowly fall, and avoid damage caused by falling to the surface of the material. The impact of the compression roller 31 and the material can be absorbed, and the noise and wear caused by rigid collision can be reduced.

[0078] As a further optional solution to provide buffering, referring to FIGS. 1, 2 and 3, Figure 4 、 5 As shown in FIGS. 1, 2 and 3, a buffer 35 is arranged between the actuator 34 and the end portion of the compression roller 31, one end of the buffer 35 abuts against the actuator 34, and the other end abuts against the compression roller 31, and is used to provide buffering when the compression roller 31 moves downward under the action of gravity. Based on the foregoing solution in which the sliding block is used as a bearing seat, one end of the buffer 35 corresponding to the end portion of the compression roller 31 can abut against the sliding block.

[0079] The buffer 35 (such as a spring) is installed between the pneumatic push rod and the compression roller 31, and the spring can be coaxially arranged with the push rod. The push rod is used as a guide to avoid damage caused by uncontrollable deformation of the spring during the downward pressing of the spring. When the compression roller 31 freely falls, the buffer 35 absorbs the impact energy through elastic deformation, and converts the remaining kinetic energy into slowly released elastic potential energy. This design can ensure the compression force, avoid surface micro-cracks of hard materials (such as plates, acrylic, glass, etc.) caused by instantaneous impact, and balance the positioning accuracy and material protection.

[0080] In a specific arrangement, the end of the conveying roller 21 away from the baffle 11 is inclined towards the direction in which the material to be conveyed is required to be conveyed, and the axis of the conveying roller 21 and the baffle 11 form an acute angle, so as to form the displacement of the material to be conveyed in the first direction and the second direction.

[0081] In the present scheme, the axis of the conveying roller 21 and the baffle 11 form an acute angle (e.g. 30°-90°, not including the endpoint of 90°), so that when the surface of the conveying roller 21 contacts the material, a component force is generated: a component force in the second direction pushes the material to be conveyed forward, and a component force in the first direction pushes the material to move towards the baffle 11. This inclined design directly realizes the synthesis of bidirectional displacement through mechanical structure, without the need for additional sensors or control programs; of course, a sensor (e.g. an infrared sensor or a pressure sensor, the pressure sensor being arranged on the baffle 11 to abut against the material to be conveyed, and the infrared sensor being arranged close to the baffle 11 to detect whether the material is close to the baffle 11) can be used to detect whether the current material to be conveyed has been calibrated, but it is not a necessary component; whether the conveying roller 21 conveys the material to be measured to determine whether the calibration is completed can also be set by fixing the conveying time, for example, after 15 seconds of conveying of the conveying roller 21, it can be basically determined that the edge of the material to be conveyed has reached the baffle 11, and of course, this time is only an example, and a person skilled in the art can set 10 seconds or 20 seconds according to the actual situation.

[0082] 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 small; if the stroke is long, the angle can be large; when the angle is large, the pushing force towards the baffle 11 is relatively small, so that the baffle 11 will not be subjected to excessive pressure, and at the same time, the friction loss between the baffle 11 and the material to be conveyed is reduced, and problems such as positioning deviation caused by violent collision are avoided, but the stroke required for calibration of the material to be conveyed will be longer; when the angle is small, the stroke for calibration of the material to be conveyed is short, but the baffle 11 can be subjected to a large pressure, and the friction and loss between the baffle 11 and the material to be conveyed can also be large. Therefore, a person skilled in the art can select the angle according to the requirements.

[0083] In order to facilitate the synchronous action of a plurality of conveying rollers 21, in an alternative embodiment, referring to Figs. Figure 1 、 2 , 6, a plurality of conveying rollers 21 are distributed along the second direction, and adjacent conveying rollers 21 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.

[0084] The specific transmission member 5 can adopt a belt or a chain. Correspondingly, a gear will be arranged on the conveying roller 21 to cooperate with the belt or the chain.

[0085] The transmission member 5 is used to associate the adjacent conveying rollers 21 and also the driving member 22, and the driving member 22 can drive the conveying rollers 21 to move simultaneously, so that the movement is more synchronized, and the series transmission mode ensures that the rotating speeds of the conveying rollers 21 are consistent, so that the material is prevented from deviating due to local speed difference.

[0086] The specific transmission member 5 can be a belt or a chain. Correspondingly, the conveying roller 21 is provided with a gear for cooperating with the belt or the chain.

[0087] In further arrangement, the conveying rollers 21 distributed along the second direction are arranged as a column, and there are a plurality of columns arranged along the first direction, and at least one conveying roller 21 in each column is transmitted by the transmission member 5 and the driving member 22.

[0088] In further arrangement, the conveying rollers 21 distributed along the second direction are arranged as a column, and there are a plurality of columns arranged along the first direction, and at least one conveying roller 21 in each column is transmitted by the transmission member 5 and the driving member 22.

[0089] As a further simplified driving structure, the output end of the driving member 22 is connected with a first rotating shaft 26, and each conveying roller 21 transmitted by the transmission member 5 and the driving member 22 is transmitted by the transmission member 5 and the first rotating shaft 26 to form cooperation with the driving member 22.

[0090] The first rotating shaft 26 can be provided with a plurality of gears for cooperating with the transmission member 5 of each column of conveying rollers 21 connected with the driving member 22. The driving member 22 drives the first rotating shaft 26 to rotate, and synchronously drives each transmission member 5 on the first rotating shaft 26, so that the transmission member 5 drives each column of conveying rollers 21 to rotate. The first rotating shaft 26 and the driving member 22 can be connected by a shaft coupling, or can be transmitted by a gear set or a chain or a belt. The single driving member 22 realizes power distribution of multiple columns through the first rotating shaft 26, simplifies the transmission system and reduces the cost.

[0091] In the specific distribution of the conveying belt 23, a plurality of conveying belts 23 are respectively arranged between the adjacent two columns of conveying rollers 21 and / or between the conveying roller 21 and the baffle 11, as shown in Figure 1 、 2 , 6. This arrangement can more uniformly support and convey the material to be conveyed.

[0092] In further arrangement, the output end of the driving member 22 is connected with a first rotating shaft 26, and each conveying roller 21 transmitted by the transmission member 5 and the driving member 22 is transmitted by the transmission member 5 and the first rotating shaft 26 to form cooperation with the driving member 22. 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 mounted on the swing arms 41. The driver 42 drives the swing arms 41 to swing and move the negative pressure suction device 43 back and forth between the first position and the second position. The two swing arms 41 are rotatable through a fixed pivot point I 44.

[0093] In this scheme, the driver 42 drives the swing arms 41 to swing around the pivot point I 44, and drives the negative pressure suction device 43 to move back and forth between the two fixed positions (the first position and the second position). When the swing arms 41 swing to the first position, the negative pressure suction device 43 adsorbs the printing medium; when the swing arms 41 swing to the second position, the negative pressure suction device 43 releases the printing medium to the conveying assembly. Through the single degree of freedom swing of the swing arms 41, the mechanical design of the transfer path is simplified, and the dependence on driving precision is reduced. It is especially suitable for the transfer of hard plate-shaped materials.

[0094] The swing arms 41 and the pivot point I 44 can be rotatably connected, allowing the swing arms 41 to rotate around the pivot point as a hinge point, making the trajectory of each swing stable and controllable. The driver 42 can use a motor or a power push rod driving scheme, and the power push rod can be a pneumatic push rod, an air pressure push rod, an electric push rod, etc. The negative pressure suction device 43 can be composed of a negative pressure suction disc 433 and an air pump, which can use the air pump to drive the negative pressure suction disc 433 to generate negative pressure, and then adsorb the hard plate-shaped printing medium.

[0095] As an embodiment 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 mounted on the connecting shaft 431, and a plurality of negative pressure suction discs 433 mounted on the frame 432. The frame 432 is rotatably mounted on the connecting shaft 431.

[0096] The frame 432 is hinged to the swing arm 41 through the connecting shaft 431, allowing the frame 432 to rotate around the connecting shaft 431. When the swing arm 41 swings, the rotational freedom of the frame 432 can be used to adjust the state of the printing medium, for example, the printing medium is in a flat state at the first position. Through the rotation of the frame 432, the printing medium can be transferred in a flat state as much as possible, and released on the conveying assembly in a flat state. The distributed layout of multiple negative pressure suction discs 433 further enhances the uniformity of the adsorption force, avoiding local stress concentration leading to material deformation.

[0097] As an embodiment 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 mounted on the connecting shaft 431, and a plurality of negative pressure suction discs 433 mounted on the frame 432. The frame 432 is rotatably mounted on the connecting shaft 431. Figure 1 Demonstrated implementation.

[0098] 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.

[0099] 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 .

[0100] 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.

[0101] 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.

[0102] 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.

[0103] As an optional implementation of the driver 42, the driver 42 comprises an actuator 421, a second rotating shaft 422, two gears 423 arranged on the second rotating shaft 422, the actuator 421 is linked with the second rotating shaft 422, the second rotating shaft 422 is driven to rotate by the actuator 421, and the positions of the two swing arms 41 corresponding to the gears 423 are provided with external teeth 411 arranged along a circular arc track, the gears 423 are engaged with the external teeth 411 and drive the swing arms 41 to swing by rotating the second rotating shaft 422.

[0104] The actuator 421 (such as a servo motor or a stepping motor) drives the second rotating shaft 422 to rotate (a worm and gear scheme can be adopted for transmission, or a bevel gear 423 can be adopted for transmission), and the gears 423 are engaged with the external teeth 411 of the swing arms 41 to convert the rotary motion into reciprocating swing of the swing arms 41. The engagement track of the gears 423 and the external teeth 411 is designed as a circular arc, which is consistent with the swing path of the swing arms 41 around the fulcrum 44, and reduces the positioning error caused by transmission gap.

[0105] Further arrangement, the second connecting piece 47 is further provided with a connecting hole 471 for penetrating the second rotating shaft 422, the second rotating shaft 422 is installed in the connecting hole 471 through a bearing, and the second rotating shaft 422 is limited from deviating through the connecting hole 471.

[0106] The second rotating shaft 422 is limited by the connecting hole 471, which can improve the engagement stability between the gears 423 and the external teeth 411, ensure the transmission cooperation therebetween, and inhibit axial movement and radial swing (such as vibration transmission when the gears 423 are engaged).

[0107] The connecting hole 471 can also be located on the second connecting piece 47, which facilitates one-time production of the second connecting piece 47. After the second connecting piece 47 is fixedly connected to the external support through bolts, the positions of the connecting hole 471, the fulcrum 44 and the fulcrum 46 on the second connecting piece 47 can be determined, thereby ensuring the installation precision each time.

[0108] The above mainly introduces the conveying mechanism for calibration and stable conveying, which can form the following scheme when applied in a printing device: a printing device, comprising a printing component and a conveying mechanism for calibration and stable conveying as in any one of the above preferred schemes, the conveying mechanism being used to convey a material to be conveyed to the printing component for printing.

[0109] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and refinements without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

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; 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; 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; The conveying rollers distributed along the second direction are arranged as a column, and a plurality of columns are arranged in the first direction, and at least one conveying roller in each column is used for transmission through the cooperation of the transmission member and the driving member; The plurality of conveyor belts are respectively located between two adjacent rows of conveyor rollers and / or between the conveyor rollers and the baffle.

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: 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.

8. 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.

9. The conveying mechanism for calibration and stable conveying according to claim 8, 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.

10. The conveying mechanism for calibration and stable conveying according to claim 9, 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.

11. The conveying mechanism for calibration and stable conveying according to claim 10, 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.

12. The conveying mechanism for calibration and stable conveying according to claim 11, 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.

13. The conveying mechanism for calibration and stable conveying according to claim 12, 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.

14. 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 13, wherein the conveying mechanism is used to convey the material to be conveyed to the printing component for printing.

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