Driver for driving printing screen

Abstract

The driver comprises a shell, at least one connecting piece, at least one linear motor and a mounting plate, the shell comprises a bottom plate and a surrounding baffle, the bottom plate and the mounting plate are oppositely arranged, through holes are formed in the center of the bottom plate and the center of the mounting plate, the surrounding baffle is arranged on the edge of the bottom plate in a surrounding mode, and the linear motor is connected with the connecting piece. The linear motor comprises a rotor and a stator, the stator is fixedly arranged on the inner side of the bottom plate, the rotor is fixedly arranged on the side, facing the bottom plate, of the mounting plate, and the linear motor is used for driving the mounting plate to rotate relative to the shell. The mounting plate is used for mounting a printing screen. According to the embodiment of the invention, the structure of the driver is simplified, the driver can be conveniently replaced and maintained, and time is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery processing, in particular to a driver for driving a printing screen. BACKGROUND

[0002] In the production process of photovoltaic cells, it is necessary to print conductive material on the surface of the cell to form a grid line for collecting current. At present, the industry mostly uses silk screen printing to form a grid line on the surface of the cell. Before printing, the angle of the screen frame needs to be adjusted to align the printing screen installed on the screen frame with the cell.

[0003] The existing driving mechanism for driving the printing screen is relatively complex, including a servo motor, a lead screw module, and an arc-shaped guide rail. The servo motor, the lead screw module, and the arc-shaped guide rail are respectively installed on the shell of the silk screen printing machine. The screen frame is installed on the arc-shaped guide rail and connected in transmission with the lead screw module. The servo motor drives the screen frame to slide along the arc-shaped guide rail through the lead screw module to achieve angle adjustment of the printing screen. When maintaining the driving mechanism, the above-mentioned parts need to be disassembled respectively, which requires a long downtime. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a driver for driving a printing screen, which solves the problem of complex structure of the driver in the prior art.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] The present application provides a driver for driving a printing screen, which includes a shell, at least one connecting piece, at least one linear motor, and a mounting plate. The shell includes a bottom plate and a surrounding fence. The bottom plate and the mounting plate are oppositely arranged, and the center of each plate is provided with a through hole. The surrounding fence is arranged around the edge of the bottom plate and extends towards the mounting plate. The mounting plate is rotatably arranged on the inner side of the bottom plate through at least one connecting piece. The linear motor includes a rotor and a stator. The stator is fixedly arranged on the inner side of the bottom plate, and the rotor is fixedly arranged on the side of the mounting plate facing the bottom plate. The linear motor is used to drive the mounting plate to rotate relative to the shell. The mounting plate is used to mount the printing screen.

[0007] The present application simplifies the structure of the driver by setting the stator and rotor capable of moving along an arc line as the driver, which can conveniently replace and maintain the driver and save time.

[0008] Optionally, the at least one connecting piece is an arc-shaped guide rail with a sliding block. The mounting plate is rotatably arranged on the inner side of the bottom plate through at least one arc-shaped guide rail. The at least one arc-shaped guide rail is on the same circumference or on the concentric circle as the moving track of the rotor.

[0009] The arc-shaped guide rail and the sliding block are arranged to guide the relative movement of the shell and the mounting plate, improve the stability of the relative movement of the shell and the mounting plate, and determine the rotation center, thereby ensuring the accuracy of the angle adjustment.

[0010] Optionally, the connecting member is arranged at least in two, and the two connecting members are arranged on two sides of the through hole.

[0011] By arranging at least two connecting members and arranging the two connecting members on two sides of the through hole, the stress on the mounting plate is more uniform when the mounting plate rotates, and the stability of the relative movement of the shell and the mounting plate is improved.

[0012] Optionally, the driver includes at least two connecting members, at least one of which is an arc-shaped guide rail with a sliding block, and at least one of which is a lifting wheel assembly, which is used to carry and limit the mounting plate to be in a horizontal plane.

[0013] By using the arc-shaped guide rail and the lifting wheel assembly to guide the relative movement of the mounting block and the shell, the lifting wheel assembly can effectively share the weight of the mounting plate and the printing screen, which can prevent the mounting plate from sinking or deforming due to excessive weight, and ensure that the printing screen remains stable in the horizontal position; the arc-shaped guide rail not only serves as a connection, but also determines the rotation center of the mounting plate, so that the mounting plate does not deviate when rotating, thereby improving the printing effect.

[0014] Optionally, the lifting wheel assembly includes a lifting wheel seat, a first column of lifting wheels and a second column of lifting wheels rotatably arranged on the lifting wheel seat, and the first column of lifting wheels and the second column of lifting wheels each include at least one lifting wheel, wherein:

[0015] The lifting wheel seat is fixedly arranged on the inner side of the bottom plate, the edge of the upper surface of the mounting plate is tangent to the circumferential side of the first column of lifting wheels, and the edge of the lower surface of the mounting plate is tangent to the circumferential side of the second column of lifting wheels.

[0016] By designing the tangent structure of the mounting plate and the two columns of lifting wheels, the two columns of lifting wheels can accurately limit the mounting plate in the horizontal direction and support it in the vertical direction, and the tangent limiting of the two columns of lifting wheels can effectively prevent the mounting plate from jumping up and down due to vibration or external interference.

[0017] Optionally, the driver includes at least two connecting members, and all of the at least two connecting members are arc-shaped guide rails with sliding blocks, and all of the arc-shaped guide rails extend along the same circumference.

[0018] By using all arc-shaped guide rails and extending all arc-shaped guide rails along the same circumference, the stress on the mounting plate is more uniform when the mounting plate rotates, and the movement of the mounting plate is smoother and more stable; at the same time, the rotation center is determined to prevent the mounting plate from deviating when rotating.

[0019] Optionally, the driver further comprises a grating ruler and a reading head, one of the reading head and the grating ruler is fixedly installed on the bottom plate, the other of the reading head and the grating ruler is fixedly installed on the mounting plate, and the reading head and the grating ruler are arranged in position correspondence.

[0020] By arranging the reading head and the grating ruler, the relative displacement between the housing and the mounting plate can be monitored in real time, so as to accurately determine the rotation angle.

[0021] Optionally, the mounting plate is located at one side of the surrounding plate and is gap-fitted with the surrounding plate.

[0022] The position relationship between the surrounding plate and the bottom plate can effectively reduce the interference of external dust and impurities on the mounting plate and other internal components, and avoid mutual interference between the mounting plate and the surrounding plate. Compared with surrounding the mounting plate with the surrounding plate, arranging the mounting plate at one side of the surrounding plate makes the driver more compact.

[0023] Optionally, the driver comprises two linear motors, the two linear motors are arranged at two sides of the through hole respectively, and the moving tracks of the two movers of the two linear motors are on the same circle or on different circles of the concentric circles.

[0024] By arranging the two linear motors at two sides of the through hole respectively and cooperating, a more powerful and balanced driving torque can be provided for the mounting plate, and the motion error is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] The application will be further described below with reference to the drawings.

[0026] Figure 1 is a schematic diagram of the external structure of the driver in one embodiment of the application;

[0027] Figure 2 is a schematic diagram of the internal structure of the driver in one embodiment of the application;

[0028] Figure 3 is a schematic diagram of the structure of the hoisting wheel assembly in one embodiment of the application.

[0029] MARKS OF THE DRAWINGS:

[0030] 1, housing; 11, bottom plate; 12, surrounding plate; 2, connecting piece; 21, arc-shaped guide rail; 211, sliding block; 22, hoisting wheel assembly; 221, hoisting wheel seat; 222, first column of hoisting wheels; 223, second column of hoisting wheels; 3, linear motor; 31, mover; 4, mounting plate; 5, through hole; 6, limiting block; 7, stop block; 8, buffer block; 9, photoelectric sensor; 91, emitting part; 92, receiving part. DETAILED DESCRIPTION

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figure 1 and Figure 2 As shown, in some embodiments, this application provides a driver for driving a printing screen. The driver includes a housing 1, at least one connector 2, at least one linear motor 3, and a mounting plate 4. The housing 1 serves not only as an external protective structure for the driver but also provides support for internal components, including a base plate 11 and a baffle plate 12. The base plate 11 is planar, providing a stable mounting base. The baffle plate 12 surrounds the edge of the base plate 11 and is connected to the base plate 11 by welding or other processes, together forming a semi-enclosed space to protect the internal components.

[0033] Mounting plate 4 is located on the opposite side of base plate 11. Mounting plate 4 is rotatably mounted inside base plate 11 via at least one connector 2. Enclosure plate 12 extends towards mounting plate 4, effectively reducing interference from external dust and impurities to the mounting plate and other internal components. Mounting plate 4 has structures for fixing the printing screen, such as built-in slots and cylinder locking mechanisms. The screen is directly inserted into the slot and fixed to mounting plate 4 by the cylinder locking mechanism; alternatively, a screen holder can be installed on the outside of mounting plate 4, which can be used to insert and fix the printing screen. Both base plate 11 and mounting plate 4 have through holes 5 at their centers. These through holes 5 are coaxial and the same size, and they are used to allow for the movement of the squeegee of the printing equipment when it scrapes the printing screen. The linear motor 3 is the power source that drives the mounting plate 4 to rotate. It includes a mover 31 and a stator (not shown). The stator is fixedly mounted on the inner side of the base plate 11 (the side of the base plate 11 facing the mounting plate 4), and the mover 31 is fixedly mounted on the side of the mounting plate 4 facing the base plate 11. The mover 31 moves relative to the stator to drive the mounting plate 4 to rotate relative to the outer casing 1. Of course, the stator and mover 31 can be interchanged with the same effect.

[0034] The design provides a reliable installation platform for the printing screen plate, and through cooperation with the linear motor 3, rotation relative to the shell 1 can be realized, thereby meeting the basic requirement of angle adjustment of the printing screen plate during the printing process. Compared with the existing driving mechanism, the application omits complex screw module components, and only realizes the angle adjustment function of the printing screen plate through the combination of the linear motor 3, the connecting piece 2, and the shell 1 and the mounting plate 4. The simplified structure makes the cooperative work between the components more direct and efficient, reduces the angle adjustment error and delay caused by the complex transmission structure, and can realize convenient maintenance of the driver, greatly shortens the downtime maintenance time, and improves the production efficiency.

[0035] Please refer to Figure 1 In some embodiments, the mounting plate 4 is located on one side of the enclosing plate 12 and is in gap cooperation with the enclosing plate 12. Through the positional relationship between the enclosing plate 12 and the bottom plate 11, the mutual interference between the mounting plate and the enclosing plate is avoided, and the mounting plate 4 and other internal components can be effectively protected from external dust, impurities and the like, so as to ensure the clean environment inside the driver and prolong the service life of the components. Compared with the enclosing plate 12 surrounding the mounting plate 4, the mounting plate 4 arranged on one side of the enclosing plate 12 makes the driver more compact and saves space in the machine.

[0036] In some embodiments, as Figure 2 At least one connecting piece 2 is an arc-shaped guide rail 21 with a sliding block 211, Figure 2 The sliding block 211 in the arc-shaped guide rail 21 includes a raised pad, and the mounting plate 4 is rotatably arranged on the inner side of the bottom plate 11 through at least one arc-shaped guide rail 21, wherein the arc-shaped guide rail 21 is fixedly installed on the side of the mounting plate 4 facing the bottom plate 11 through a bolt, and the sliding block 211 is fixedly installed on the inner side of the bottom plate 11 through a bolt. The arc-shaped guide rail 21 and the moving track of the mover 31 are on the same circumference or on concentric circles. Similarly, the sliding block 211 and the arc-shaped guide rail 21 that cooperate with each other can exchange the installation positions, and the effect remains unchanged.

[0037] The arc-shaped guide rail 21 provides precise circular motion guidance for the mounting plate 4, and the precise matching of the arc-shaped guide rail 21 and the moving track of the mover 31 enables the driving force of the linear motor 3 to be efficiently converted into the rotating power of the mounting plate 4, thereby reducing energy loss and movement deviation.

[0038] In one possible embodiment, at least two connecting pieces 2 are arranged relatively, and the at least two connecting pieces 2 are arranged on both sides of the through hole 5, so as to avoid the inclination, shaking or jamming of the mounting plate 4 during the rotation process due to uneven force, ensure that the mounting plate 4 can maintain a stable movement state at each angle, and reduce the printing error caused by unstable movement of the mounting plate 4.

[0039] Please refer to Figure 2As shown, in some embodiments, the driver includes at least two connecting members 2, all of which are arc-shaped guide rails 21 with sliding blocks 211, all of which extend along the same circumference, which can make the force on the mounting plate 4 more uniform when rotating, making the movement of the mounting plate 4 more smooth and stable.

[0040] For example, four connecting members 2 are provided, all of which are arc-shaped guide rails 21 with sliding blocks 211.

[0041] In other embodiments, the driver includes at least two connecting members 2, at least one of which is an arc-shaped guide rail 21 with a sliding block 211, and at least one of which is a hanging wheel assembly 22. The main function of the hanging wheel assembly 22 is to bear the weight of the mounting plate 4 and keep it stably in the horizontal plane. In some large printing screens or heavy printing screen driving applications, due to the large weight of the screen itself, relying solely on the arc-shaped guide rail 21 may not meet the bearing requirements, and the hanging wheel assembly 22 can effectively share the weight and provide additional horizontal limiting to ensure that the printing screen always remains horizontal and at a predetermined height during rotation, avoiding problems such as uneven ink thickness or pattern distortion caused by the inclination of the mounting plate 4, and improving the uniformity and consistency of the printed pattern.

[0042] Please refer to Figure 3 As shown, for example, the hanging wheel assembly 22 includes a hanging wheel seat 221, a first column of hanging wheels 222 and a second column of hanging wheels 223 rotatably arranged on the hanging wheel seat 221, and the first column of hanging wheels 222 and the second column of hanging wheels 223 each include at least one hanging wheel, wherein:

[0043] The hanging wheel seat 221 is fixedly arranged on the inner side of the bottom plate 11, and the mounting position of the hanging wheel seat 221 on the inner side of the bottom plate 11 is determined through accurate calculation and simulation analysis to ensure the best cooperative working effect with the arc-shaped guide rail 21 and other components. The edge of the upper surface of the mounting plate 4 is tangent to the circumferential side of the first column of hanging wheels 222, and the edge of the lower surface of the mounting plate 4 is tangent to the circumferential side of the second column of hanging wheels 223. This tangent structure design of the mounting plate 4 and the hanging wheel enables the hanging wheel to accurately limit the horizontal position of the mounting plate 4 and provide vertical support. In high-speed printing, the stability of the printing screen is crucial, and the tangent limiting of the hanging wheel can effectively prevent the mounting plate 4 from jumping up and down due to vibration or external interference, ensuring the constant distance between the printing screen and the printed workpiece, thereby ensuring the clarity and uniformity of the printed pattern.

[0044] In one possible embodiment, the arc-shaped guide rail 21 and the hanging wheel assembly 22 are arranged on both sides of the through hole 5, which can combine the advantages of both to realize full-directional guidance and support for the mounting plate 4.

[0045] Please refer to Figure 2As shown, in some embodiments, the driver includes two linear motors 3, which are respectively arranged on both sides of the through hole 5, and the moving tracks of the two movers 31 of the two linear motors 3 are on the same circle or on different circles of concentric circles.

[0046] By arranging the two linear motors 3 on both sides of the through hole 5 and working cooperatively, a more powerful and balanced driving torque can be provided for the mounting plate 4. In the driving application of large and heavy printing screens, a single motor may not meet the driving requirements, and the double-motor driving system can effectively solve this problem, ensuring that the printing screen can be quickly and stably rotated to the specified angle, improving the working efficiency and reliability of the printing equipment, and being suitable for the driving of printing screens in large industrial printing equipment. In addition, a single linear motor may have a driving error, which can be reduced by arranging two linear motors.

[0047] In some embodiments, the driver further includes a grating ruler (not shown) and a reading head (not shown), one of the reading head and the grating ruler is fixedly installed on the bottom plate 11, the other of the reading head and the grating ruler is fixedly installed on the mounting plate 4, and the reading head and the grating ruler are arranged in position correspondence.

[0048] The arrangement of the grating ruler and the reading head realizes the accurate measurement and feedback of the rotation angle of the mounting plate 4. In the automatic printing control system, by acquiring the angle information of the mounting plate 4 in real time, the control system can accurately control the speed and positioning of the linear motor 3 according to the preset printing program, realize the closed-loop control of the angle of the printing screen, improve the automation degree and precision control level of the printing process, effectively reduce the human error, and improve the consistency of the quality of the printed matter.

[0049] Please refer to Figure 2 As shown, in some embodiments, at least one sliding block 211 is fixedly provided with a limiting block 6, which can be fixedly installed on the side of the sliding block 211 away from the through hole 5 by welding, bolt connection or the like. The limiting block 6 is provided with a stop block 7 fixedly installed on the mounting plate 4 on both sides, and the stop blocks 7 on both sides are located on the moving path of the limiting block 6, and the positions thereof are determined according to the allowed rotation range of the mounting plate 4. The stop blocks 7 on both sides are respectively fixedly provided with a buffer block 8 extending towards the limiting block 6, and the buffer block 8 is made of elastic material such as rubber, silicone or polyurethane, and has a certain compression deformation capacity. The stop blocks 7 on both sides and the buffer blocks 8 are symmetrically distributed on both sides of the limiting block 6, forming a bidirectional limiting and buffer protection structure for the limiting block 6, preventing the mounting plate 4 from being excessively rotated and damaging the equipment due to control system failure, motor out of control or external interference, and improving the safety and reliability of the equipment.

[0050] Please refer to Figure 2As shown, in some embodiments, the driver further comprises a photoelectric sensor 9, which comprises a position corresponding emitting part 91 and an accepting part 92, one of which is fixedly installed on one of the sliders 211, and the other of which is fixedly installed on the mounting plate 4. The arrangement of the photoelectric sensor 9 can be used to detect the specific position or motion state of the mounting plate 4. For example, in the initial positioning process of the printing screen, when the mounting plate 4 is rotated to the preset starting position, the photoelectric sensor 9 can timely detect and feed back the signal to the control system, and the control system can start the subsequent printing program accordingly, realizing the automatic control and precise positioning of the printing process, and improving the intelligent level and working efficiency of the printing equipment.

[0051] Working process:

[0052] When the driver is running, the control system sends a control signal to the linear motor 3 according to the printing task requirement, the mover 31 of the linear motor 3 starts to move under the action of the magnetic field generated by the stator, driving the mounting plate 4 to rotate along the arc-shaped guide rail 21 or under the limiting of the hanger wheel assembly 22 relative to the shell 1. The grating ruler and the reading head monitor the rotation angle of the mounting plate 4 in real time, and feed back the feedback signal to the control system, which accurately adjusts the operation of the linear motor 3 according to the feedback signal, ensuring that the mounting plate 4 drives the printing screen to rotate to the specified angle. The photoelectric sensor 9 detects the specific position or motion state during the rotation of the mounting plate 4, such as the initial position, the specific angle mark point, etc., and feeds back the signal to the control system, which accordingly performs corresponding operations, such as starting or stopping the linear motor 3, switching the printing process, etc., realizing the automatic and high-precision driving of the printing screen.

[0053] The above describes one embodiment of the present application in detail, but the content described is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent coverage of the present application.

[0054] It should be noted that the "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. The description of the present application with respect to "left", "right", "left side", "right side", "upper", "lower", "top", "bottom" and the like is defined based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the structure must be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0055] In the description of the application, unless specifically stated and limited otherwise, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

Claims

1. A drive for driving a printing screen, characterized in that, The driver comprises a housing, at least one connecting piece, at least one linear motor and a mounting plate, the housing comprises a bottom plate and a surrounding plate, the bottom plate and the mounting plate are oppositely arranged, the center of the bottom plate and the mounting plate is provided with a through hole, the surrounding plate is arranged around the edge of the bottom plate and extends towards the mounting plate, the mounting plate is rotatably arranged on the inner side of the bottom plate through the at least one connecting piece, the linear motor comprises a mover and a stator, the stator is fixedly arranged on the inner side of the bottom plate, the mover is fixedly arranged on the side of the mounting plate facing the bottom plate, the linear motor is used to drive the mounting plate to rotate relative to the housing, and the mounting plate is used to mount a printing screen.

2. The driver of claim 1, wherein, The at least one connecting piece is an arc-shaped guide rail with a sliding block, the mounting plate is rotatably arranged on the inner side of the bottom plate through the at least one arc-shaped guide rail, and the at least one arc-shaped guide rail is on the same circle or on concentric circles with the moving track of the mover.

3. The driver of claim 2, wherein, The connecting piece is oppositely arranged at least twice, and the at least two connecting pieces are arranged on the two sides of the through hole respectively.

4. The driver of claim 2, wherein, The driver comprises at least two connecting pieces, at least one of the connecting pieces is an arc-shaped guide rail with a sliding block, and at least one of the connecting pieces is a hanging wheel assembly, and the hanging wheel assembly is used to carry and limit the mounting plate to be in a horizontal plane.

5. The driver of claim 4, wherein, The hanging wheel assembly comprises a hanging wheel seat, a first column of hanging wheels and a second column of hanging wheels rotatably arranged on the hanging wheel seat, and the first column of hanging wheels and the second column of hanging wheels each comprise at least one hanging wheel, wherein: The hanging wheel seat is fixedly arranged on the inner side of the bottom plate, the edge of the upper surface of the mounting plate is tangent to the circumferential side of the first column of hanging wheels, and the edge of the lower surface of the mounting plate is tangent to the circumferential side of the second column of hanging wheels.

6. The driver of claim 4, wherein, The arc-shaped guide rail and the hanging wheel assembly are arranged on the two sides of the through hole respectively.

7. The driver of claim 2, wherein, The driver comprises at least two connecting pieces, all of the connecting pieces are arc-shaped guide rails with sliding blocks, and all of the arc-shaped guide rails extend along the same circle.

8. The driver of claim 1, wherein, The driver further comprises a grating ruler and a reading head, one of the reading head and the grating ruler is fixedly mounted on the bottom plate, the other of the reading head and the grating ruler is fixedly mounted on the mounting plate, and the reading head and the grating ruler are arranged in position correspondence.

9. The driver of claim 1, wherein, The mounting plate is located on one side of the surrounding plate and is in gap cooperation with the surrounding plate.

10. The driver of any one of claims 1 to 9, characterized in that The driver comprises two linear motors, the two linear motors are arranged on the two sides of the through hole respectively, and the moving tracks of the two movers of the two linear motors are on the same circle or on different circles of concentric circles.

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