Precise scraper grinder device
By designing a precision scraper grinder including a grinder assembly, a scraper mounting assembly, a lateral movement assembly, a longitudinal movement assembly and a base assembly, the problem of existing devices being expensive and unable to provide high-precision grinding is solved, and a high-precision and small footprint scraper grinding effect is achieved.
Patent Information
- Application Number
- CN202510324021.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2019-11-20
- Filing Date
- 2020-11-13
- Publication Date
- 2025-05-13
AI Technical Summary
Existing benchtop devices for scraper grinding are expensive, large in size, and cannot provide the flat, uniform and precise grinding required for printing complex circuits.
A precision scraper grinder is designed, including a grinder assembly, a scraper mounting assembly, a lateral movement assembly, a longitudinal movement assembly and a base assembly, which achieves precision movement and alignment through three-axis alignment, combined with a precision micrometer head and digital indicator table to ensure the accuracy and consistency of the grinding.
High precision and consistent grinding of scraper blades is achieved, and it can be ground at a resolution of 8-16 micro-inches, meeting the needs of electronic printing while taking up less space.
Smart Images
Figure CN119973774A_ABST
Abstract
Description
[0001] This application is a divisional application of Chinese invention patent application 202080092318.0, entitled “Precision Scraper Grinder Device”, with a filing date of November 13, 2020. Technical Field
[0002] The present disclosure relates to printed electronic product manufacturing process, and more particularly to a device for precision scraper grinding. Background Art
[0003] Benchtop units for grinding squeegee blades are used to service squeegee blades used for printing graphic inks on textiles, plastic substrates, etc. These units tend to be expensive, have a large relative footprint, and lack the precision and adjustability required to prepare squeegee blades for printing complex circuit traces. In particular, these units are unable to provide the flat, even, and precise grind required for printing complex circuits. Summary of the invention
[0004] Embodiments of an apparatus and method for precision grinding of a scraper are disclosed herein. A precision scraper grinder includes: a grinder assembly configured to grind an edge of a scraper blade; a scraper mounting assembly configured to hold the scraper blade, the grinder assembly being vertically alignable relative to the scraper mounting assembly; a lateral movement assembly connected to the grinder assembly, the lateral movement assembly being configured to position the grinder assembly relative to the scraper blade in defined increments; a longitudinal movement assembly connected to the lateral movement, the longitudinal movement assembly being configured to move the grinder assembly along the width of the scraper blade; and a base assembly. The grinder assembly, the scraper mounting assembly, the lateral movement assembly, and the longitudinal movement assembly are connected to the base assembly. The scraper mounting assembly, the lateral movement assembly, and the longitudinal movement assembly enable three-axis alignment between the grinder assembly and the scraper blade. BRIEF DESCRIPTION OF THE DRAWINGS
[0005] The present disclosure can be best understood from the following detailed description when read in conjunction with the accompanying drawings which are incorporated into and thus constitute a part of this specification. It should be emphasized that, according to convention, the various features in the drawings are not drawn to scale. On the contrary, the sizes of the various features are arbitrarily enlarged or reduced for clarity.
[0006] Figure 1 is a perspective view of a precision scraper grinder device according to an embodiment.
[0007] Figure 2 According to the embodiment Figure 1 Front view of the precision scraper grinder device.
[0008] Figure 3 According to the embodiment Figure 1Left side view of the precision scraper grinder assembly.
[0009] Figure 4 According to the embodiment Figure 1 Right side view of the precision scraper grinder apparatus.
[0010] Figure 5 According to the embodiment Figure 1 Rear view of the precision scraper grinder assembly.
[0011] Figure 6 According to the embodiment Figure 1 Top view of the precision scraper grinder device.
[0012] Figure 7 is an exploded view of a precision scraper grinder according to an embodiment.
[0013] Figure 8 is a perspective photograph of a precision scraper grinder according to an embodiment.
[0014] Fig. 9 According to the embodiment Figure 8 A side perspective photo of a precision scraper grinder.
[0015] Fig.10 According to the embodiment Figure 8 Front view of the precision scraper grinder.
[0016] Fig.11 According to the embodiment Figure 8 Another front view of the precision scraper grinder.
[0017] Fig.12 Here is a photo comparing a 1000 grit grinding wheel to a 360 grit grinding wheel.
[0018] Fig.13 An example method for precision grinding a doctor blade edge according to an embodiment is shown.
[0019] Fig.14A and Fig. 14B are photographs of a scraper before and after using a precision scraper grinder device, respectively, according to an embodiment. DETAILED DESCRIPTION
[0020] The accompanying drawings and descriptions provided herein can be simplified to illustrate the various aspects of the described embodiments, and are applicable to clearly understand the process, machine, manufacture and / or material composition disclosed herein, while for the sake of clarity, exclude other aspects that may be found in typical similar devices, systems, constituents and methods. Therefore, those of ordinary skill can recognize that other elements and / or steps may be desirable or necessary for realizing the device, system, constituent and method described herein. However, because such elements and steps are well known in the art, and because they are not conducive to a better understanding of disclosed content, the discussion of such elements and steps may not be provided herein. However, the disclosure is considered to inherently include all such elements, variations and modifications of the described aspects that will be known to those of ordinary skill in the art according to discussion herein.
[0021] Embodiments are provided throughout to make the present disclosure fully thorough and fully convey the disclosed scope to those skilled in the art. Many specific details, such as examples of specific aspects, devices and methods, are set forth to provide a thorough understanding of the present disclosure. However, it is apparent to those skilled in the art that certain specific disclosed details do not need to be adopted, and that the embodiments may be embodied in different forms. Therefore, the exemplary embodiments set forth should not be construed as limiting the scope of the present disclosure.
[0022] The terms used herein are intended only to describe specific embodiments and are not intended to be limiting. For example, as used herein, the singular forms "a", "an" and "the" may also be intended to include the plural forms unless the context clearly indicates otherwise. The terms "comprise", "include" and "have" are inclusive and thus specify the presence of stated features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or groups consisting thereof.
[0023] Therefore, unless specifically identified as a preferred or required order of execution, the steps, processes, and operations described herein should not be construed as necessarily requiring them to be performed in the particular order discussed or described. It should also be understood that additional or alternative steps may be used to replace or combine the disclosed aspects.
[0024] In addition, although the terms first, second, third, etc. can be used to describe various elements, steps or aspects, these elements, steps or aspects should not be limited by these terms. These terms may only be used to distinguish an element or aspect from another element or aspect. Therefore, unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply sequence or order when used. Therefore, the first element, step, component, region, layer or part discussed below can be referred to as the second element, step, component, region, layer or part, without departing from the teaching of the present disclosure.
[0025] Polyurethane squeegee blades are used for screen printing circuit traces. There is a need to refurbish and / or renew these polyurethane squeegee blades by grinding their leading edges. This grinding must be performed with extreme precision and consistency. The grinder unit must be able to grind squeegee blades that are permanently bonded to a proprietary squeegee holder as well as unbonded squeegee blades. Such a mechanism should also be a benchtop unit that takes up minimal space.
[0026] The device described herein provides precision and consistency by incorporating fully adjustable and tight tolerance machine components. The device is a three-axis device that allows for precision movement, alignment and / or calibration in the x, y and z axes. In addition, the two sets of linear guides described herein can be aligned in parallel. This allows for smooth, undisturbed movement, resulting in a uniform grind on the scraper blade.
[0027] In one embodiment, the scraper mounting can be leveled and / or aligned with the horizontal movement of the carriage plate. This allows the scraper blade to be ground evenly at a 90 degree right angle over its entire length. The micrometer head and digital indicator allow the diamond wheel to make a calculated lateral movement. This allows the user to grind off a precise amount of the leading edge of the scraper blade. For electronic printing, the resolution of the scraper edge or surface is on the order of 8-16 micro inches. Therefore, the device enables the scraper to be ground accurately and evenly at the desired resolution.
[0028] In addition to the precision of the device, the device can also process scrapers mounted in proprietary scraper holders because once a scraper blade is mounted in one of these holders, it cannot be removed. In one embodiment, the device clamps vertically onto a polyurethane scraper blade and suspends its corresponding holder in the air. Because the scraper is mounted in this manner, the device allows for a 90 degree square grind of the scraper edge. In one embodiment, the device can process bare or unmounted scrapers.
[0029] Figures 1 to 71 is a different view of a precision scraper grinder device 1000 according to an embodiment. The precision scraper grinder device 1000 includes a frame 1050. In one embodiment, the frame 1050 is made of aluminum. The base plate 1100 is attached to the frame 1050. In one embodiment, the base plate 1100 is bolted to the frame 1050 using fasteners 1075. The base plate 1100 includes a pair of linear guides 1150 attached along the x-direction, longitudinal axis or length of the base plate 1100. The pair of linear guides 1150 allow the carriage plate 1250 to translate smoothly over the length of the base plate 1100. In one embodiment, the pair of linear guides 1150 are adjustable linear guides or bearings. The pair of linear guides 1150 can be calibrated to be parallel to the scraper mount 1800 to ensure smooth and uniform grinding. The emergency stop plate assembly 1200 is attached to one end of the base plate 1100 and is electrically connected to stop the precision scraper grinder device 1000 in an emergency.
[0030] The carriage plate 1250 is used to translate the transverse slide plate 1300 longitudinally along the length of the scraper blade 1900, and thus translate the diamond wheel grinder 1550. The carriage plate 1250 translates along the pair of linear guides 1150 of the base plate 1100. The carriage plate 1250 has a handle 1275 for moving the carriage plate 1250 along the pair of linear guides 1150. The carriage plate 1250 includes a cutout 1350 (in Figure 7 1400) to allow clearance for the electric motor 1600 when the lateral slide 1300 is translated in the y-direction, transversely, or in a forward or rearward direction relative to the scraper mount 1800. The carriage plate 1250 includes a pair of linear guides 1400 attached along the y-direction, longitudinal axis, or width of the carriage plate 1250. The pair of linear guides 1400 allow the lateral slide 1300 to translate freely along the width of the cutout 1350. In one embodiment, the pair of linear guides 1400 are adjustable linear guides or bearings. A precision micrometer 1450 and an indicator gauge 1500 are attached to the carriage plate 1250. In one embodiment, the indicator gauge 1500 is a digital indicator gauge. The precision micrometer 1450 and the indicator gauge 1500 can be used together to position, position, and / or translate the lateral slide 1300 laterally relative to the scraper mount 1800. In one embodiment, the resolution of movement of the precision micrometer 1450 and dial gauge 1500 is 1 / 1000 of an inch.
[0031] The transverse slide 1300 can be used to grind a calculated amount of material from the leading edge of the scraper blade 1900. The transverse slide 1300 achieves this by vertically mounting the diamond wheel grinder 1550 and the electric motor 1600. The diamond wheel grinder 1550 includes an integral set screw 3150 (exemplified in FIG. 150 ) for vertical alignment with the scraper mount 1800. Fig.12). An electric motor 1600 is mounted below the transverse slide 1300 and drives an output shaft 1650, which in turn drives a diamond wheel grinder 1550. The output shaft 1650 runs upward through the transverse slide 1300, attached to the diamond wheel grinder 1550 and a bearing assembly 1675. The bearing assembly 1675 suppresses or prevents oscillation or deflection of the output shaft 1650. The transverse slide 1300 translates on a pair of linear guides 1400 on the carriage plate 1250. The movement is controlled by a precision micrometer 1450 and an indicator gauge 1500 on the carriage plate 1250. The transverse slide 1300 includes a stopper 1700 for the precision micrometer 1450 and the indicator gauge 1500 attached to the carriage plate 1250. The stopper 1700 is secured to the carriage plate 1250 by a spring 1750 (such as Fig.10 1450. This arrangement allows for accurate and / or measured translation of the lateral slide 1300 and prevents unwanted lateral movement. The lateral slide 1300 includes a shield 1750 to protect the user from contact with the diamond wheel grinder 1550 or any material being ground. In one embodiment, the shield 1750 is a plexiglass shield or the like.
[0032] The scraper mount 1800 is suspended from the base plate 1100 using a set of fasteners 1825. In one embodiment, the set of fasteners 1825 can be threaded rods with associated nuts. The set of fasteners 1825 allows for full adjustability and precise leveling of the scraper mount 1800 in the z-axis. In one embodiment, the scraper mount 1800 includes a first plate 1830, a second plate 1832, and assembly hardware 1834. The first plate 1830 and the second plate 1832 are machined flat to precisely mount the scraper blade 1900. The first plate 1830 and the second plate 1832 are attached at right angles using assembly hardware 1834. The first plate 1830 and the second plate 1832 span the entire length of the base plate 1100. In one embodiment, brackets 1836 are used to support the first plate 1830 and the second plate 1832 for additional support. In one embodiment, brackets 1838 are also used to support the first plate 1830 and the second plate 1832 to the base plate 1100 to prevent undesired bending. In one embodiment, the scraper mount 1800 can hold a proprietary scraper blade holder. In one embodiment, when it is necessary to sharpen a bare scraper blade 1900 that is not mounted in a proprietary scraper blade holder, a bare scraper adapter 1850 can be fastened directly to the scraper mount 1800.
[0033] As described above, the bare scraper adapter 1850 can be used to precisely mount the bare scraper blade 1900 to the scraper mount 1800. The bare scraper adapter 1850 includes a cutout 1855 on its bottom side to slide directly onto the vertically oriented plate, i.e., the first plate 1830, of the scraper mount 1800 and securely in place. The bare scraper adapter 1850 has a machined lip 1860 that allows the user to place the bare scraper blade 1900 completely parallel to the scraper mount 1800.
[0034] The scraper clamp 1950 can be used to secure the scraper blade 1900 while it is being sharpened. The scraper clamp 1950 slides directly onto two threaded rods 1870 extending from the scraper mount 1800 and can be tightened onto the scraper blade 1900 via a threaded knob 1955 on the scraper clamp 1950.
[0035] Vacuum system (in Figures 8 to 11 ) prevents polyurethane debris from getting stuck in the paired linear guides 1150 and 1400. In one embodiment, a vacuum line can extend directly to the diamond wheel grinder 1550 to capture the debris.
[0036] In operation, the precision scraper grinder apparatus 1000 uses a pair of linear guides 1150 and 1400 along with a precision micrometer 1450 and a dial gauge 1500 to precisely control and provide smooth, undisturbed movement, thereby producing a uniform grind on the scraper blade 1900. In addition, because the scraper mount 1800 can be leveled and / or aligned with the horizontal movement of the carriage plate 1250, the scraper blade 1900 can be uniformly ground at a 90 degree right angle over its entire length. The precision micrometer 1450 and dial gauge 1500 allow the diamond wheel grinder 1550 to make calculated lateral movements. This allows the user to grind off a precise amount of the leading edge of the scraper blade 1900. Fig.14A and Fig. 14B Photos of a scraper before and after using the precision scraper grinder device 1000, respectively.
[0037] Figure 8 2 is a perspective photograph of a precision scraper grinder 2000 according to an embodiment. This photograph of the precision scraper grinder 2000 illustrates the Figures 1 to 7 Some of the components depicted include, for example, a frame 2050 , a base plate 2100 , a pair of linear guides 2150 , and a crash stop plate assembly 2200 . Additionally, the precision scraper grinder 2000 includes a vacuum system 2975 having a vacuum line 2980 . Fig. 9 yes Figure 8 Side perspective photo of a precision scraper grinder. Fig.10 yes Figure 8 Front view of the precision scraper grinder. Fig.11 yes Figure 8 Another front view of the precision scraper grinder.
[0038] Fig.12 3000 and 360 grit grinding wheel 3100. As mentioned above, the resolution of the edge or surface of the scraper is on the order of 8-16 micro inches. The 1000 grit grinding wheel 3000 along with the device enables accurate and uniform grinding of the scraper at the desired resolution.
[0039] Fig.13 An example method 13000 for precision grinding a scraper blade edge is shown. The method 13000 includes: mounting a scraper blade in a scraper mount (13100); aligning a diamond wheel grinder with the scraper mount (13200); aligning the diamond wheel grinder in the y-direction (13300); and grinding the scraper blade edge by moving in the x-direction (13400). For example, the method 13000 may be used Fig.12 The 1000 grit mill shown in Figures 1 to 11 The device shown is implemented.
[0040] The method 13000 includes installing a scraper blade in a scraper mount (13100). In one embodiment, a bare scraper blade can be installed in a precision scraper grinder. In one embodiment, a scraper blade installed in a holder can be installed in a precision scraper grinder.
[0041] The method 13000 includes aligning a diamond wheel grinder with a scraper mount (13200). The scraper mount of the precision scraper grinder is leveled. The diamond wheel grinder is vertically aligned with the scraper mount by turning an integral set screw in the diamond wheel grinder.
[0042] The method 13000 includes aligning a diamond wheel grinder in the y-direction 13300. The diamond wheel grinder is aligned relative to the edge of the doctor blade using a precision micrometer and display as described herein.
[0043] The method 13000 includes grinding a scraper blade edge by moving a diamond wheel grinder in an x-direction (13400).
[0044] Although the present disclosure has been described in conjunction with certain embodiments, it should be understood that the present disclosure is not limited to the disclosed embodiments, but on the contrary, it is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims, which scope should be given the broadest interpretation to encompass all such modifications and equivalent structures permitted by law.
Claims
1. A precision scraper grinder (1000) configured to grind an edge of a scraper blade (1900), comprising: grinder assembly; a scraper mounting assembly configured to hold the scraper blade (1900), wherein the grinder assembly is vertically alignable relative to the scraper mounting assembly; a base assembly connected to the grinder assembly and comprising: a substrate (1100); and a first pair of linear guides (1150); a longitudinal movement assembly configured to slide on the first pair of linear guides (1150) via a carriage plate (1250) to move the grinder assembly along the width of the scraper blade (1900), wherein the carriage plate (1250) comprises: Micrometer (1450); Indicator table (1500); and a second pair of linear guides (1400); and A lateral movement assembly connected to the longitudinal movement assembly and the grinder assembly, the lateral movement assembly being configured to slide on the second pair of linear guides (1400) via a lateral slide (1300) to position the grinder assembly relative to the scraper blade (1900), wherein the lateral slide (1300) includes a stopper (1700) tension-connected to the micrometer head (1450) via a spring (1750) to allow measurement translation of the lateral slide (1300) along the second pair of linear guides (1400) and prevent undesired longitudinal movement of the lateral slide (1300).
2. The precision scraper grinder (1000) according to claim 1, wherein: The scraper mounting assembly, the longitudinal movement assembly, and the lateral movement assembly are connected to the base assembly.
3. The precision scraper grinder (1000) according to claim 1, wherein: The scraper mounting assembly, the longitudinal translation assembly, and the lateral translation assembly enable three-axis alignment between the grinder assembly and the scraper blade (1900).
4. The precision scraper grinder (1000) according to claim 1, wherein: The micrometer head (1450) is configured to engage the stopper (1700) to drive the transverse slide (1300) to move on the second pair of linear guides (1400).
5. The precision scraper grinder (1000) according to claim 1, wherein: The carriage plate (1250) defines a cut-out area (1350) that allows for movement of the lateral movement assembly.
6. The precision scraper grinder (1000) according to claim 5, wherein: The electric motor (1600) is provided with clearance when the transverse slide (1300) moves along the second pair of linear guides (1400), and wherein the electric motor (1600) is configured to drive a diamond wheel grinder (1550) of the grinder assembly.
7. The precision scraper grinder (1000) according to claim 5, wherein: The grinder assembly comprises: Diamond wheel grinder (1550); Bearing assembly (1675); an electric motor (1600); and An output shaft (1650) communicates with the electric motor (1600) and is connected to the diamond wheel grinder (1550) via an opening defined by the transverse slide (1300), wherein the electric motor (1600) is configured to drive the diamond wheel grinder (1550) via the output shaft (1650).
8. The precision scraper grinder (1000) according to claim 7, wherein: The bearing assembly (1675) inhibits deflection of the output shaft (1650).
9. The precision scraper grinder (1000) according to claim 1, wherein: The scraper mounting assembly includes a scraper mounting member (1800) and a scraper clamp (1950), wherein the scraper blade (1900) is configured to be held between the scraper mounting member (1800) and the scraper clamp (1950).
10. The precision scraper grinder (1000) according to claim 9, wherein: The first pair of linear guides (1150) are adjustable linear rails or bearings parallel to the scraper mount (1800).
11. The precision scraper grinder (1000) according to claim 9, wherein: The scraper mount (1800) is suspended from the base plate (1100) using a set of fasteners (1825) that allow adjustability and leveling of the scraper mount (1800) in the z-axis of the precision scraper grinder (1000).
12. The precision scraper grinder (1000) according to claim 7, wherein: The lateral slide (1300) includes a shield (1750) configured to protect a user from contacting the diamond wheel grinder (1550).
13. The precision scraper grinder (1000) according to claim 1, wherein: The micrometer head (1450) and the indicator (1500) have a movement resolution of 25.4 μm.
14. The precision scraper grinder (1000) of claim 1, further comprising an emergency stop plate assembly (1200) attached to the base plate (1100) and electrically connected to stop the precision scraper grinder (1000).
15. The precision scraper grinder (1000) according to claim 1, further comprising an aluminum frame (1050), wherein: The base plate (1100) is coupled to the aluminum frame (1050).