CN210098111U - Laboratory is with adjustable knifing ware of thickness - Google Patents
Laboratory is with adjustable knifing ware of thickness Download PDFInfo
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- CN210098111U CN210098111U CN201920761237.XU CN201920761237U CN210098111U CN 210098111 U CN210098111 U CN 210098111U CN 201920761237 U CN201920761237 U CN 201920761237U CN 210098111 U CN210098111 U CN 210098111U
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Abstract
The utility model discloses a film scraper with adjustable thickness for laboratory, which is provided with a pair of side plates and a crossbeam which are arranged in parallel, wherein a pair of micrometer screws are symmetrically arranged on the crossbeam, the end part of the micrometer screw is connected with a scraper which can be vertically arranged between the pair of side plates in a sliding way; one side of the cross beam, which is close to the scraper, extends outwards to form an extending part, a through hole is formed in the middle of the extending part, a separating device is arranged below the extending part, the separating device comprises a vertically arranged knife switch, and return springs connected with the bottom of the extending part are symmetrically arranged on two sides of the knife switch; the middle part of the knife switch is also provided with a pressure lever which vertically and upwards passes through the through hole, and the end part of the pressure lever is provided with a pressing plate; this laboratory is with adjustable knifing ware of thickness, simple structure, it is even to coat thickness, and the easy separation is applicable to very much that the laboratory is manual to be made the sample of coating of small size, small batch.
Description
Technical Field
The utility model relates to the knifing device technical field, concretely relates to laboratory is with adjustable knifing device of thickness.
Background
The coating film is also called paint film. The coating is applied to the substrate in one or more coats to form a solid continuous film. Generally, the coating film is composed of a plurality of coating layers, and the number of coating layers is determined according to the requirements of the object to be coated. Typically including a primer layer, an intermediate coating layer, and a topcoat layer.
When a paint manufacturer and a scientific research institution need to test the performance of prepared paint, the paint is required to be brushed into a coating film with a standard thickness, and the traditional laboratory film casting method adopts a flat plate to manually scrape, namely, on a flat plate, a film-forming liquid is dripped onto a base layer (a substrate, a flat plate and the like), and the required coating film is formed by manual scraping and then solidification in the air. Obviously, the thickness of the film scraped by the above-mentioned apparatus and method is difficult to control, and the finished coating film with the same thickness cannot be repeatedly and accurately obtained, and finally the structure and performance of the finished film are affected, thereby causing the test data to be prone to errors.
Further, the conventional film scraper cannot separate the residual coating material under the film scraper from the scraped coating film after scraping the coating film, and when the film scraper is lifted, the blade brings up the coating layer at the edge of the coating film, so that the thickness of the edge of the coating film varies and does not coincide with the scraped portion.
Particularly, when coating films with different sizes are needed in the test process, and the size of the coating film is only a part of the size of the substrate, after the coating film with the needed size is scraped, the residual coating liquid can be gathered near the scraper, the scraper can be directly taken up, the coating liquid near the scraper can flow back, and the thickness near the edge of the coating film is changed; or the coating film is lifted after being solidified, and the coating film at the edge is pulled to damage the coating film, thereby influencing the subsequent test.
Disclosure of Invention
The utility model aims at providing a laboratory is with adjustable knifing ware of thickness to the problem that prior art exists.
In order to achieve the above object, the utility model adopts the following technical scheme:
a film scraper with adjustable thickness for a laboratory is provided with a pair of side plates which are arranged in parallel, the tops of the side plates are fixedly provided with a cross beam, the cross beam is symmetrically provided with a pair of micrometer screw rods, the micrometer screw rods of the micrometer screw rods penetrate through the cross beam and vertically extend downwards, the end parts of the micrometer screw rods are connected with scraping plates, and the scraping plates are vertically arranged between the side plates in a sliding manner; one side of the cross beam, which is close to the scraper, extends outwards to form an extending part, a through hole is formed in the middle of the extending part, a separating device is arranged below the extending part, the separating device comprises a vertically arranged knife switch, and return springs connected with the bottom of the extending part are symmetrically arranged on two sides of the knife switch; the middle part of the knife switch is also provided with a pressing rod which vertically and upwards penetrates through the through hole, and the end part of the pressing rod is provided with a pressing plate.
The thickness-adjustable film scraper for the laboratory is simple in structure, is suitable for manually manufacturing small-area and small-batch coating films in the laboratory, controls the vertical distance of the scraper through a pair of micrometer screws, adjusts the vertical height of the scraper according to the required coating thickness, and is high in precision; the coating film is cut and separated by the separating device, so that the edge of the scraped coating film is tidy, and the thickness of the scraped coating film is uniform and is not changed.
When the thickness-adjustable film scraper for the laboratory is used, the film scraper is placed on a substrate, and the vertical height of a scraper is fixed after a spiral micrometer is adjusted according to test requirements to enable the distance between the bottom of the scraper and the substrate to be the thickness of a required coating; injecting experimental materials from the rear part of the film scraper, holding the film scraper by hands and moving backwards to obtain a film with uniform thickness; when the required size is scraped, the pressing plate is pressed down, the pressing rod below the pressing plate presses the knife switch to move downwards until the knife switch contacts the substrate, and then the knife switch moves backwards a little distance to separate the film scraper from the scraped coating film; the pressing plate is released, the knife switch automatically rises under the action of the return spring, the film scraper is removed at the moment, and the residual material behind the film scraper is separated without influencing the thickness near the edge of the scraped coating film.
And when the required size is scraped, the pressing plate is pressed after the film is slightly solidified after the film is scraped for a few minutes, and the residual film coating material below the film scraper and the scraped film coating are separated by using the knife switch, so that the obtained film coating has the advantages of more regular edge, no raised edge, very uniform overall thickness and contribution to improving the accuracy of subsequent performance tests.
The vertically arranged knife switch can automatically reset under the action of the reset spring, is convenient to use and has better repeated use consistency; the pressing plate on the pressing rod is convenient for applying pressure by hands.
Furthermore, a distance sensor is arranged between the pair of micrometer screw gauges, and the distance sensor is arranged on the bottom surface of the cross beam and is opposite to the top surface of the scraper plate; and a digital display device is arranged above the cross beam and connected with the distance sensor. In the film scraping process, the film scraper can generate fluctuation under the influence of a test material, or the force changes when the film scraper is manually moved, so that the distance between the scraping plate and the substrate is changed; the distance sensor can monitor the vertical distance of the scraper in the film scraping process in real time, the numerical value change can be visually observed through the digital display device, the film scraping is immediately stopped if the numerical value change range exceeds a preset required value, and the distance is adjusted and then continued so as to avoid that the whole film is useless when the thickness is found to be uneven after the film scraping is finished and the waste of the film coating material is caused.
Further, the transverse width of the knife switch is larger than that of the scraper, so that the knife switch can separate the coating films scraped by the scraper in the whole transverse range; the length of the pressing rod is greater than the height of the side plate, so that the bottom of the knife switch can touch the upper surface of the substrate when the pressing rod is pressed down.
Furthermore, a sleeve is arranged in the through hole, a ball is embedded in the inner surface of the sleeve, and the pressing rod is sleeved in the sleeve. The sleeve is fixed in the through hole, and the sleeve can protect the pressure rod and is beneficial to the up-and-down movement of the pressure rod; the embedded ball further is convenient for the slip of depression bar, and under reset spring's effect, the depression bar can rise fast, and the plug-in strip plays the plug-in strip fast, reduces the plug-in strip and the adhesion of coating material.
Furthermore, a T-shaped sliding groove is formed in the inner side of the side plate, and T-shaped sliding edges matched with the T-shaped sliding groove are arranged on two sides of the scraper; the outer side of the side plate is provided with a jacking screw; and a limit screw is also arranged above the jacking screw. The T-shaped sliding groove is matched with the T-shaped sliding edge, so that the front displacement, the rear displacement, the left displacement and the right displacement of the scraper are smaller, and the offset of the scraper is reduced; the jacking screw can fix the scraper to avoid falling; the limiting screw avoids excessive upward movement of the scraper so as to prevent the micrometer screw from reversely jacking the micrometer screw to cause damage to the micrometer screw.
Furthermore, a connecting rod is arranged at one end of the side plate, which is far away from the scraper plate, and two ends of the connecting rod are respectively fixed on the side plate; and a balancing weight is arranged below the middle part of the connecting rod. The balancing weight can balance the weight of the beam, the scraper and the knife switch which are arranged at the other end of the film scraper, keeps the front and back balance of the film scraper, and cannot tilt to a certain side in the moving process, so that the distance between the scraper and the substrate is prevented from changing, and the film coating thickness is prevented from being influenced.
Furthermore, a handle is obliquely arranged on the connecting rod. In the film scraping process, the handle is convenient for pulling the film coating device to move backwards; in the process of moving the film coating device, the film coating device is convenient to lift.
Compared with the prior art, the beneficial effects of the utility model are that: 1. the thickness-adjustable film scraper for the laboratory is simple in structure, uniform in film coating thickness and easy to separate, and is very suitable for manually manufacturing small-area and small-batch film coating samples in the laboratory; 2. the coating film can be cut and separated through the separating device, and the scraped coating film is ensured to be neat in edge and uniform in thickness and is not changed; 3. the knife switch is easy to press down, can automatically reset, is convenient to use and has better repeated use consistency; 4. the T-shaped sliding groove, the T-shaped sliding edge and the jacking screw are matched, so that the front, back, left and right displacement of the scraper is small, and the scraper is fixed firmly and stably; 5. the film thickness that scrapes out with the adjustable knifing ware of thickness is even for this laboratory, can freely cut apart, and the size of filming size does not receive the base plate size restriction.
Drawings
FIG. 1 is a schematic view of a three-dimensional structure of a film scraper with adjustable thickness for laboratory use according to the present invention;
FIG. 2 is a schematic view of a scraper structure of the film scraper with adjustable thickness for laboratory use of the present invention;
FIG. 3 is a schematic structural view of a dividing device of the film scraper with adjustable thickness for laboratory use according to the present invention;
FIG. 4 is a schematic view of the structure of the utility model showing the matching of the pressure bar and the sleeve of the film scraper with adjustable thickness for laboratory use;
in the figure: 1. a side plate; 2. a cross beam; 3. an extension portion; 301. a through hole; 4. a micrometer screw; 5. a squeegee; 6. a knife switch; 7. a pressure lever; 8. a digital display device; 9. jacking the screw tightly; 10. a limit screw; 11. a connecting rod; 12. a balancing weight; 13. a handle; 14. a distance sensor; 15. a return spring; 16. a pressing plate; 17. a sleeve; 18. and a ball.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 4, a laboratory thickness-adjustable film scraper comprises a pair of side plates 1 arranged in parallel, a cross beam 2 is fixedly arranged at the top of each side plate 1, a pair of micrometer screws 4 are symmetrically arranged on the cross beam 2, micrometer screws of the micrometer screws 4 penetrate through the cross beam 2 and vertically extend downwards, end parts of the micrometer screws are connected with scraping plates 5, and the scraping plates 5 are vertically arranged between the side plates 1 in a sliding manner; one side of the beam 2 close to the scraper 5 extends outwards to form an extension part 3, a through hole 301 is formed in the middle of the extension part 3, a separating device is arranged below the extension part 3, the separating device comprises a vertically arranged knife switch 6, and return springs 15 connected with the bottom of the extension part 3 are symmetrically arranged on two sides of the knife switch 6; the middle part of the knife switch 6 is also provided with a pressure lever 7, the pressure lever 7 vertically penetrates through the through hole 301 upwards, and the end part of the pressure lever 7 is provided with a pressing plate 16.
When the thickness-adjustable film scraper for the laboratory is used, the film scraper is placed on a substrate, the micrometer screw 4 is adjusted according to the test requirement to enable the distance between the bottom of the scraper 5 and the substrate to be the required coating thickness, and then the vertical height of the scraper 5 is fixed; injecting experimental materials from the rear part of the film scraper, holding the film scraper by hands and moving backwards to obtain a film with uniform thickness; when the required size is scraped, the pressing plate 16 is pressed down, the pressing rod 7 below the pressing plate 16 presses the knife switch 6 to move downwards until the knife switch 6 contacts the substrate, and then the knife switch moves backwards a little distance, so that the film scraper is separated from the scraped coating film; when the pressing plate 16 is released, the knife 6 is automatically lifted under the action of the return spring 15, the film scraper is removed, and the residual material behind the film scraper is separated without affecting the thickness of the scraped coating film near the edge.
The vertically arranged knife switch 6 can automatically reset under the action of the reset spring 15, is convenient to use and has better repeated use consistency; the pressing plate 16 above the plunger 7 facilitates the application of pressure by hand.
Further, a distance sensor 14 is arranged between the pair of micrometer screws 4, and the distance sensor 14 is arranged on the bottom surface of the cross beam 2 and is opposite to the top surface of the scraper 5; a digital display device 8 is arranged above the cross beam 2, and the digital display device 8 is connected with the distance sensor 14. In the film scraping process, the film scraper can generate fluctuation under the influence of a test material, or the force changes when the film scraper is manually moved, so that the distance between the scraping plate and the substrate is changed; the distance sensor 14 can monitor the vertical distance of the scraper 5 in the film scraping process in real time, the digital display device 8 can visually observe the change of the numerical value, if the numerical value change range exceeds a preset required value, the film scraping is stopped immediately, and after the distance is adjusted, the film scraping is continued, so that the waste of the film coating material caused by the fact that the whole film coating is useless when the thickness is not uniform after the film scraping is finished is avoided. For convenience of use, the digital display device and distance sensor are powered by a lithium battery, and a lithium battery block may be mounted above the cross beam 2 near the digital display device 8.
The micrometer 4 is made according to the principle of spiral amplification, that is, the screw rod rotates in the nut for a circle, and then the screw rod advances or retreats for a distance of one thread pitch along the direction of the rotation axis. The thread pitch of the precise thread is 0.5mm, the movable scale is provided with 50 equal divisions, the micrometer screw can advance or retreat by 0.5mm when the movable scale rotates for one circle, and therefore, the rotation of each small division is equivalent to that the micrometer screw advances or retreats by 0.5/50-0.01 mm. The commercial maturity of the product may be selected and will not be described further herein. The distance sensor 14 may be a commercially available optical distance sensor, infrared distance sensor, ultrasonic distance sensor, or the like.
Further, the transverse width of the knife switch 6 is larger than that of the scraper 5, so that the knife switch 6 can separate the coating films scraped by the scraper 5 in the whole transverse range; the length of the pressure lever 7 is larger than the height of the side plate 1, so that the bottom of the knife switch 6 can touch the upper surface of the substrate when the pressure lever is pressed down.
Further, as shown in fig. 4, a sleeve 17 is disposed in the through hole 301, a ball 18 is embedded in an inner surface of the sleeve 17, and the pressing rod 7 is sleeved in the sleeve 17. The sleeve 17 is fixed in the through hole 301, and the sleeve 17 can protect the pressure rod 7 and is beneficial to the up-and-down movement of the pressure rod; the embedded ball 18 is further convenient for the sliding of the pressure lever 7, and under the action of the reset spring, the pressure lever can quickly rise, quickly bring up the knife switch, and reduce the adhesion of the knife switch and the coating material.
Furthermore, a T-shaped sliding groove is formed in the inner side of the side plate 1, and T-shaped sliding edges matched with the T-shaped sliding groove are formed in the two sides of the scraper 5; a jacking screw 9 is arranged on the outer side of the side plate 1; and a limit screw 10 is also arranged above the jacking screw 9. The T-shaped sliding groove is matched with the T-shaped sliding edge, so that the front, back, left and right displacement of the scraper 5 can be smaller, and the offset of the scraper 5 is reduced; the jacking screw 9 can fix the scraper 5 to avoid falling; the limiting screw 10 prevents the scraper 5 from moving upwards too much, so that the micrometer screw is prevented from ejecting the micrometer screw to the micrometer screw 4, and the micrometer screw 4 is prevented from being damaged.
Further, a connecting rod 11 is arranged at one end of the side plate 1 far away from the scraper 5, and two ends of the connecting rod 11 are respectively fixed on the side plate 1; and a balancing weight 12 is arranged below the middle part of the connecting rod 11. The balancing weight 12 can balance the weight of the beam 2, the scraper 5 and the knife switch 6 arranged at the other end of the film scraper, keeps the front and back balance of the film scraper, and cannot tilt to a certain side in the moving process, so that the distance between the scraper 5 and the substrate is prevented from changing, and the film coating thickness is prevented from being influenced.
Further, a handle 13 is obliquely arranged on the connecting rod 11. During the film scraping process, the handle 13 is convenient for pulling the film coating device to move backwards; in the process of moving the film coating device, the film coating device is convenient to lift.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A film scraper with adjustable thickness for a laboratory is provided with a pair of side plates which are arranged in parallel, the tops of the side plates are fixedly provided with a cross beam, the cross beam is symmetrically provided with a pair of micrometer screw rods, the micrometer screw rods of the micrometer screw rods penetrate through the cross beam and vertically extend downwards, the end parts of the micrometer screw rods are connected with scraping plates, and the scraping plates are vertically arranged between the side plates in a sliding manner; the scraper structure is characterized in that one side of the cross beam, which is close to the scraper, extends outwards to form an extending part, a through hole is formed in the middle of the extending part, a separating device is arranged below the extending part, the separating device comprises a vertically arranged knife switch, and return springs connected with the bottom of the extending part are symmetrically arranged on two sides of the knife switch; the middle part of the knife switch is also provided with a pressing rod which vertically and upwards penetrates through the through hole, and the end part of the pressing rod is provided with a pressing plate.
2. The laboratory thickness adjustable film scraper as claimed in claim 1, wherein a distance sensor is arranged between a pair of said micrometer screws, and said distance sensor is arranged on the bottom surface of said cross beam and opposite to the top surface of said scraper; and a digital display device is arranged above the cross beam and connected with the distance sensor.
3. The laboratory thickness adjustable doctor blade of claim 1, wherein the knife blade has a transverse width greater than a transverse width of the doctor blade; the length of the pressing rod is greater than the height of the side plate.
4. The film scraper with the adjustable thickness for the laboratory according to claim 1, wherein a sleeve is arranged in the through hole, a ball is embedded in the inner surface of the sleeve, and the pressing rod is sleeved in the sleeve.
5. The film scraper with the adjustable thickness for the laboratory according to claim 1, wherein a T-shaped sliding groove is formed in the inner side of the side plate, and T-shaped sliding edges matched with the T-shaped sliding groove are formed in two sides of the scraper; the outer side of the side plate is provided with a jacking screw; and a limit screw is also arranged above the jacking screw.
6. The film scraper with the adjustable thickness for the laboratory according to claim 1, wherein a connecting rod is arranged at one end of the side plate, which is far away from the scraper, and two ends of the connecting rod are respectively fixed on the side plate; and a balancing weight is arranged below the middle part of the connecting rod.
7. The laboratory thickness adjustable film scraper as claimed in claim 6, wherein a handle is obliquely arranged on the connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920761237.XU CN210098111U (en) | 2019-05-24 | 2019-05-24 | Laboratory is with adjustable knifing ware of thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920761237.XU CN210098111U (en) | 2019-05-24 | 2019-05-24 | Laboratory is with adjustable knifing ware of thickness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210098111U true CN210098111U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920761237.XU Active CN210098111U (en) | 2019-05-24 | 2019-05-24 | Laboratory is with adjustable knifing ware of thickness |
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| Country | Link |
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| CN (1) | CN210098111U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695189A (en) * | 2021-08-16 | 2021-11-26 | 清华大学 | Fat liquoring device and fat liquoring method thereof |
| CN114748880A (en) * | 2022-04-24 | 2022-07-15 | 扬州大学 | Film scraping device for molecular distiller and film scraping thickness adjusting method |
-
2019
- 2019-05-24 CN CN201920761237.XU patent/CN210098111U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695189A (en) * | 2021-08-16 | 2021-11-26 | 清华大学 | Fat liquoring device and fat liquoring method thereof |
| CN113695189B (en) * | 2021-08-16 | 2023-02-28 | 清华大学 | Greasing device and greasing method thereof |
| CN114748880A (en) * | 2022-04-24 | 2022-07-15 | 扬州大学 | Film scraping device for molecular distiller and film scraping thickness adjusting method |
| CN114748880B (en) * | 2022-04-24 | 2023-12-15 | 扬州大学 | Film scraping device for molecular distiller and film scraping thickness adjusting method |
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