Automatic linear screen wiping device

Abstract

The utility model provides an automatic linear screen wiping device, which is characterized in that a three-stage linkage module is controlled by a servo mechanism, the three-stage linkage module comprises a first-stage linear module, a lifting servo module and a linear wiping module, the first-stage linear module realizes the linear movement of a sponge, the lifting servo module controls the sponge to apply pressure to a screen in the vertical direction, and the linear wiping module is used for wiping the screen. And the linear wiping module controls the sponge to linearly wipe the surface of the screen plate in a reciprocating manner. Compared with manual wiping and joint robot wiping in the prior art, the surface contact with the screen printing plate can be kept, the damage to the screen printing plate is reduced, and the uniformity is high; the extension arm is driven by the belt wheel transmission mechanism, high-speed reciprocating motion of wiping action can be achieved, the circulation time of wiping of a single screen printing plate is only half of that of a conventional joint robot, and the cleaning quality and the automation level are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a screen processing equipment, concretely is an automatic linear screen wiping device. BACKGROUND

[0002] The screen is the key work in the field of printing and electronic manufacturing, realizes pattern transfer through silk screen printing technology, and is composed of optical glass or silk screen engraved with precise grid or metal screen composed of metal nickel sheet, and is widely applied to printing industry, photovoltaic industry and the like. The screen will be left with slurry or ink in the printing process, and if not cleaned in time, the residual will block the screen hole, resulting in broken grid, ink shortage and the like in subsequent printing, affecting the printing product quality, and even causing screen damage, so the surface of the screen needs to be cleaned regularly.

[0003] In the prior art, cleaning is usually carried out manually, each screen stays in the cleaning area, and the staff wipes the screen surface with a dust-free cloth. Obviously, the manual wiping efficiency is low. In order to enhance the cleaning efficiency, some enterprises adopt the scheme of carrying a dust-free cloth by a joint robot, and then imitate the manual wiping track to carry out automatic cleaning. However, the wiping pressure control of this scheme is very unsatisfactory, the screen surface is easily damaged, the circulation of the wiping process is not conducive, and the price is expensive, so the screen wiping device in the prior art needs to be improved. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides an automatic linear screen wiping device, which comprises a first linear module arranged along a first direction;

[0005] A lifting servo module is connected to the horizontal output end of the first linear module in a lifting manner.

[0006] A linear wiping module is further provided, which comprises a support plate connected to the output end of the lifting servo module;

[0007] An extension arm is slidingly connected to the support plate along the first direction.

[0008] A base is installed at the end of the extension arm away from the support plate, and the upper part of the base is open, and a sponge for wiping the screen is embedded in the opening.

[0009] A belt wheel transmission mechanism is provided on the support plate and is in transmission connection with the extension arm to drive the extension arm to reciprocate along the first direction.

[0010] A servo control module is further provided, and each module is provided with an executable element, and the opening and closing of each module are controlled according to the control information sent by the servo control module.

[0011] Further, two openings are arranged on the upper part of the base along the length direction, and each opening is provided with a group of sponges.

[0012] Further, the height of the two groups of sponges on the close side is lower than that on the outer side, so that the sponges on the base are arranged in a structure with a concave middle part and high sides.

[0013] Further, a horizontal ruler is arranged on the bottom of the support plate.

[0014] Further, the bottom of the extension arm is provided with a sliding rail extending along the first direction, and the upper end of the support plate is fixedly provided with a guide block corresponding to the position of the sliding rail, and the sliding rail and the guide block form a pair of linear motion pairs.

[0015] Further, a plurality of lightening holes are arranged on the extension arm at intervals.

[0016] Further, a limiting strip is arranged on the upper surface of the support plate below the extension arm, the limiting strip extends along the first direction, and a limiting block is arranged on the upper surface of the limiting strip, and a fixed block is arranged on the end of the extension arm away from the base, and the limiting block is in contact with the fixed block to limit the stroke of the extension arm.

[0017] Further, the belt wheel transmission mechanism comprises a driving wheel and a driven wheel arranged on the two ends of the support plate, the driving wheel is driven to rotate by a servo driving member, one end of the transmission block is provided with a transmission hole, and the toothed chain is in transmission connection with the extension arm through the transmission hole.

[0018] Further, a second photoelectric sensor is arranged on the support plate, and a detection sheet is arranged on the extension arm corresponding to the position of the second photoelectric sensor.

[0019] Further, the servo control module comprises a control console, and the control console is provided with an interaction module, and the executable elements in the first linear module, the lifting servo module and the belt wheel transmission mechanism can be controlled by manually inputting control information.

[0020] The utility model provides a kind of automatic linear screen wiping device, is controlled three-stage linkage module by servo mechanism: first linear module, lifting servo module, linear wiping module, first linear module realizes that sponge linearly moves, lifting servo module controls sponge and pressurizes screen in vertical direction, linear wiping module controls sponge and linearly wipes screen surface in turn reciprocatingly. Compared with manual wiping and articulated robot wiping in prior art, the utility model can keep and screen surface contact, reduce the damage to screen, and uniformity is high;Extension arm is driven by belt wheel transmission mechanism, can realize the high-speed reciprocating motion of wiping action, and the cycle time of single screen wiping is only half of conventional articulated robot, significantly improve cleaning quality and automation level. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the structural schematic diagram of the automatic linear screen wiping device of the utility model;

[0022] Figure 2 is the structural schematic diagram of the linear wiping module when it is expanded;

[0023] Figure 3 is the structural schematic diagram of the linear wiping module when it is contracted;

[0024] Figure 4 is the connection schematic diagram of the sponge and the base;

[0025] Figure 5 is the schematic diagram of the limiting block limiting the stroke of the extension arm;

[0026] Figure 6 is the transmission schematic diagram of the transmission block and the chain.

[0027] Reference signs: first linear module 1, lifting servo module 2, linear wiping module 3, sponge 4, lifting plate 5, support plate 6, extension arm 7, base 8, partition plate 9, level ruler 10, sliding rail 11, guide block 12, weight-reducing hole 13, limiting strip 14, limiting block 15, fixed block 16, driving wheel 17, driven wheel 18, servo driving part 19, toothed chain 20, transmission block 21, transmission hole 22, first photoelectric sensor 23, second photoelectric sensor 24, detection sheet 25. DETAILED DESCRIPTION

[0028] As Figure 1 shown in the automatic linear screen wiping device, comprising a first linear module 1 and a linear wiping module 3 arranged along a first direction, and a lifting servo module 2 arranged vertically, wherein the first linear module 1 is fixedly connected to a desktop, the lifting servo module 2 is connected to the moving end of the first linear module 1, and the linear wiping module 3 is connected to the moving end of the lifting servo module 2. The linear wiping module 3 is connected with the sponge 4 for wiping the screen at the end, the size of the sponge 4 is roughly equivalent to the width size of the area to be wiped, the linear wiping module 3 reciprocates along the first direction, and the sponge 4 wipes the surface of the screen during movement; the lifting servo module 2 controls the vertical movement of the linear wiping module 3, lifts the sponge 4 to the target height, and keeps the pressure on the screen; the first linear module 1 controls the horizontal movement of the lifting servo module 2, and expands the coverage of the wiping operation.

[0029] In the embodiment, the first linear module 1 is a linear motor, which is internally integrated with a screw transmission structure, a motor and a control system, and can convert the rotary motion of the motor into high-precision linear motion to undertake the driving of large-range horizontal axial motion; the linear motor is fixedly connected to the tabletop to form a stable motion reference. The lifting servo module 2 is a vertically arranged linear motor, which is connected to the driving end of the first linear module 1 through a sliding block, and the cooperation of the servo driving part 19 and the speed reducer ensures that the sponge 4 can be quickly lifted. The lifting end of the lifting servo module 2 is connected with a lifting plate 5, which is fixedly connected to the sliding block of the lifting servo module 2. The size of the lifting plate 5 is larger than that of the sliding block to expand the support area of the linear wiping module 3. The three moving modules jointly act to realize the action process of horizontal movement, vertical positioning and linear wiping.

[0030] The linear wiping module 3 comprises a support plate 6, a belt wheel transmission mechanism arranged on the support plate 6, an extension arm 7 and a base 8. The support plate 6 is fixedly connected to the lifting plate 5, and a reinforcing rib is connected between the lifting plate 5 and the support plate 6 to reinforce the connection of the lifting plate 5 and the support plate 6 and enhance the stability of the linear wiping module 3 during work. The extension arm 7 is arranged on the support plate 6 along a first direction, and the base 8 is a containing part of the sponge 4 and is installed at the end of the extension arm 7 to move synchronously with the extension arm 7; the belt wheel transmission mechanism drives the extension arm 7 to move transversely relative to the support plate 6 to control the base 8 and the sponge 4 to extend into the target position to clean the surface of the screen.

[0031] The utility model is different from the artificial wiping mode of the existing dust-free cloth, selects the sponge 4 as the wiping object, the width of the sponge 4 is same with the width of the wiping surface on the screen, and then the belt wheel transmission mechanism drives the sponge 4 to reciprocate along the first direction, and the first direction is the length direction of the wiping surface of the screen, Figure 2 and Figure 3 The utility model shows the schematic diagram of two positions of the extension arm 7. As shown in the figure, Figure 4 The base 8 is a shell structure with an open upper portion, the lower portion of the sponge 4 is embedded in the base 8, and the upper portion extends out of the opening of the base 8. Compared with the dust-free cloth, the sponge 4 has the advantages of high elasticity and can deform according to the contact pressure with the product, while the dust-free cloth is thin and lacks elasticity, and the screen will also deform under stress. In the wiping process controlled by the machine, the dust-free cloth is prone to improper pressure control, which is not conducive to the automatic cleaning of the screen.

[0032] The base 8 is further configured with two openings arranged in parallel along the length direction, separated by a partition 9. Each opening contains a set of sponges 4. The height of the side of the two sets of sponges 4 that is close to each other is lower than the height of the outer side, so that the sponges 4 on the base 8 have a structure that is concave in the middle and high on both sides. This structure is conducive to forming a pressure gradient structure on the cleaning surface of the screen, which, together with the slight deformation of the screen, avoids the pressure generated during wiping from being concentrated in the middle area.

[0033] The base 8 can be integrally formed onto the end of the extension arm 7, or it can be prepared separately and then installed onto the end of the extension arm 7 by means of screwing, riveting, or fastening.

[0034] Furthermore, a level 10 is installed at the bottom of the support plate 6 to monitor the levelness of the support plate 6 and ensure that the linear wiping module 3 can be stably positioned at the target height during operation.

[0035] The bottom of the extension arm 7 is provided with a slide rail 11 extending along a first direction. A guide block 12 is fixedly installed on the upper end of the support plate 6 corresponding to the position of the slide rail 11. The slide rail 11 is slidably connected to the guide block 12, forming a pair of linear motion pairs to ensure that the extension arm 7 can slide smoothly along a preset path. In this embodiment, a double guide block 12 structure is used, with two sets of guide blocks 12 arranged side by side on the side of the support plate 6 near the base 8, increasing the support area for the extension arm 7.

[0036] Furthermore, the extension arm 7 is provided with a plurality of weight-reducing holes 13 spaced apart, which are used to reduce the weight of the extension arm 7 body, reduce motion inertia energy consumption, and improve the response speed of the extension arm 7.

[0037] Furthermore, such as Figure 5 As shown, a limiting strip 14 is provided on the upper surface of the support plate 6 below the extension arm 7. The limiting strip 14 extends along the first direction and a limiting block 15 protrudes above the limiting strip 14. A fixed block 16 is provided at the end of the extension arm 7 away from the base 8. The fixed block 16 is located between the two sets of limiting blocks 15. The limiting block 15 restricts the initial stroke of the extension arm 7 and prevents the inertial movement of the extension arm 7 from causing collision and damage to the equipment.

[0038] The pulley transmission mechanism includes a driving wheel 17 and a driven wheel 18 respectively located at both ends of the support plate 6. The driving wheel 17 is driven to rotate by a servo drive 19. The servo drive 19 and the driven wheel 18 are fixedly connected to the support plate 6 by a bracket. The driving wheel 17 and the driven wheel 18 are driven by a toothed chain 20. A transmission block 21 is connected above the extension arm 7. One end of the transmission block 21 is provided with a transmission hole 22. The size of the transmission hole 22 is approximately the same as the size of the toothed chain 20. The toothed chain 20 passes through the transmission hole 22 and is driven through the transmission hole 22.

[0039] Further, as shown in Figure 6 The transmission block 21 comprises a lower part and an upper part, the upper part and the lower part form the transmission hole 22, the lower part is fixedly connected to the upper end of the extension arm 7, and the upper part is fixed above the lower part by screwing or riveting. This split design is beneficial to the installation of the toothed chain 20, and the transmission structure can be easily formed in the transmission hole 22.

[0040] The utility model also includes has servo control module, servo control module includes monitoring unit, execution unit, control unit, monitoring unit includes a plurality of sensors, control unit can receive sensor monitored information and send control signal, execution unit includes set in one level linear module 1, lift servo module 2, pulley transmission mechanism inside executable element, can according to control signal control each module start and close.

[0041] For example, in the embodiment, the monitoring unit includes a first photoelectric sensor 23 arranged on the lift servo module 2, which is used to monitor the lifting height of the linear wiping module 3. By monitoring the lifting height, it is identified whether the linear wiping module 3 is in place. The second photoelectric sensor 24 is arranged at both ends of the support plate 6, and the detection sheet 25 is arranged at the position corresponding to the second photoelectric sensor 24 of the extension arm 7. The second photoelectric sensor 24 is used to monitor the travel position of both ends of the extension arm 7, to determine whether the pulley transmission mechanism is in place. Then, by starting the servo drive 19, the high-speed movement of the extension arm 7 between the initial and final travel positions is realized.

[0042] Further, the servo control module includes a control console, and the control console is provided with an interaction module. The execution units in the one level linear module 1, the lift servo module 2 and the pulley transmission mechanism can be controlled by manually inputting information. For example, the opening and closing of each execution unit are controlled. The distance information is inputted to control the horizontal displacement of the one level linear module 1, the lifting amount of the lift servo module 2 and the extension amount of the pulley transmission mechanism. The number of times is inputted to control the cycle number of the linear wiping module 3, and so on. Thus, the compatibility adjustment can be made for different specifications of products and scene requirements.

[0043] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model. The ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. An automated linear screen wiping device, characterized in that: Includes a first-level linear module (1), which is set along the first direction; The lifting servo module (2) is vertically connected to the horizontal output end of the primary linear module (1); And a linear wiping module (3), the linear wiping module (3) including: a support plate (6), connected to the output end of the lifting servo module (2); The extension arm (7) is slidably connected to the support plate (6) along the first direction; A base (8) is installed at the end of the extension arm (7) away from the support plate (6), the upper part of the base (8) having an opening into which a sponge (4) for wiping the screen is embedded; and, A pulley drive mechanism is provided on the support plate (6) and is connected to the extension arm (7) for transmission, thereby driving the extension arm (7) to reciprocate along the first direction; It also includes a servo control module. The first-level linear module (1), the lifting servo module (2), and the pulley transmission mechanism are all equipped with actuators. The servo control module controls the opening and closing of each module according to the control information issued by the servo control module.

2. The automated linear screen wiping device as described in claim 1, characterized in that: The upper part of the base (8) has two openings arranged in parallel along the length direction, and each opening contains a set of sponges (4).

3. The automated linear screen wiping device as described in claim 2, characterized in that: The height of the two sets of sponges (4) on the side closest to each other is lower than the height of the outer side, so that the sponge (4) on the base (8) presents a structure with a concave middle and high sides.

4. The automated linear screen wiping device as described in claim 1, characterized in that: A level (10) is installed at the bottom of the support plate (6).

5. The automated linear screen wiping device as described in claim 1, characterized in that: The bottom of the extension arm (7) is provided with a slide rail (11) extending in the first direction, and the upper end of the support plate (6) is fixedly installed with a guide block (12) corresponding to the position of the slide rail (11). The slide rail (11) and the guide block (12) constitute a pair of linear motion pairs.

6. The automated linear screen wiping device as described in claim 5, characterized in that: The extension arm (7) is provided with multiple weight-reducing holes (13) spaced apart.

7. The automated linear screen wiping device as described in claim 5, characterized in that: The upper surface of the support plate (6) is provided with a limiting strip (14) below the extension arm (7). The limiting strip (14) extends along a first direction and a limiting block (15) protrudes above the limiting strip (14). A fixed block (16) is provided at one end of the extension arm (7) away from the base (8). The limiting block (15) contacts the fixed block (16) to limit the stroke of the extension arm (7).

8. The automated linear screen wiping device as described in claim 5, characterized in that: The pulley transmission mechanism includes a drive wheel (17) and a driven wheel (18) located at both ends of the support plate (6). The drive wheel (17) and the driven wheel (18) are driven by a toothed chain (20). A transmission block (21) is connected above the extension arm (7). The drive wheel (17) is driven to rotate by a servo drive (19). One end of the transmission block (21) is provided with a transmission hole (22). The toothed chain (20) is connected to the extension arm (7) through the transmission hole (22).

9. The automated linear screen wiping device as described in claim 5, characterized in that: A second photoelectric sensor (24) is provided on the support plate (6), and a detection piece (25) is provided on the extension arm (7) at the position corresponding to the second photoelectric sensor (24).

10. The automated linear screen wiping device as described in claim 5, characterized in that: The servo control module includes a console, which has an interactive module that can control the actuators in the primary linear module (1), the lifting servo module (2), and the pulley transmission mechanism by manually inputting control information.

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