A doctor blade apparatus and method of use

Abstract

The application discloses a scraper device and a using method. The device is provided with at least two scraper blades installed on adjustable seats. The scraper blades are in strip plate structure and the length direction of the scraper blades is parallel to the axis of the rotary drum. In use, the elevation angle of the adjustable seat is adjusted so that the edge of all the scraper blades or one of the scraper blades contacts the outer peripheral surface of the rotary drum. The material on the outer peripheral surface of the rotary drum can be more fully ensured to be in a uniform thickness state. In the process of using the scraper device, the double scraper mode and the single scraper mode can be selected, so that the process mode of the scraper device can be flexibly switched according to specific conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sheeting machines, in particular to a scraper device applied to a rotating drum. BACKGROUND

[0002] The applicant has previously filed an invention patent application on March 11, 2022, with application number 2022102419955, which is currently in the public domain. The above-mentioned cited document is quoted in the background art, which states that "due to the high adhesion of the material, in order to prevent the material particles from adhering to the steel belt and being unable to be scraped off, a certain amount of silicon oil emulsion needs to be applied to the surface of the steel belt by means of this coating device, which is called a release agent. When the device is in working condition, the coating roller contacts the rotating drum, and the rotating drum drives the coating roller to rotate together. When the steel belt passes through the area between the rotating drum and the coating roller, its surface will be smeared with a layer of release agent".

[0003] In order to achieve uniform coating effect, a scraper is needed to scrape the release agent adhering to the circumference of the rotating drum, and to remove the excess release agent, so that the release agent on the circumference of the rotating drum is in a state of uniform thickness. However, due to the fact that the existing technology only has one piece of scraper, in actual use, the problem of uneven thickness of the release agent on the circumference of the rotating drum often occurs. SUMMARY

[0004] The purpose of the present application is to provide a scraper device and a method of use, thereby solving the problem of "uneven thickness of the release agent on the circumference of the rotating drum" in the prior art.

[0005] The purpose of the present application is achieved by a scraper device, comprising:

[0006] A movable frame is provided with a lower shaft and is connected to the frame in a rotatable manner through the lower shaft;

[0007] A telescopic driving element is rotatably connected to the frame at one end and to the movable frame at the other end to drive the movable frame to rotate up and down;

[0008] A rear support is fixedly connected to the upper side of the movable frame;

[0009] An adjustable seat is provided with an adjusting shaft and is adjustably connected to the rear support in a rotatable manner through the adjusting shaft;

[0010] At least two scrapers are mounted on the adjustable seat, the scrapers are in the form of strip-shaped plates and their length direction is parallel to the axis of the rotating drum, and in use, the angle of the adjustable seat is adjusted so that the edges of all the scrapers or one of the scrapers contact the outer circumference of the rotating drum.

[0011] Further, the wiper blades are provided with two, an upper wiper blade and a lower wiper blade, the upper wiper blade is located above the lower wiper blade.

[0012] Further, the adjustable seat is provided as a lever structure with the adjusting shaft as the fulcrum, the upper wiper blade and the lower wiper blade are located on the upper side and the lower side of the adjustable seat respectively, and the height position of the adjusting shaft is between the upper wiper blade and the lower wiper blade.

[0013] Further, the adjustable seat is connected to the rear support through the rotation of the adjusting shaft, and the adjustable seat is provided with an elevation angle adjusting assembly.

[0014] The elevation angle adjusting assembly comprises:

[0015] a plurality of upper abutting bolts arranged along the length direction of the wiper blade, the upper abutting bolts pass through the rear support and are threadedly matched with the rear support;

[0016] a plurality of upper abutting members arranged along the length direction of the wiper blade, the upper abutting members are fixed to the side of the adjustable seat facing the rear support, and the upper abutting members have upper abutting grooves facing the rear support;

[0017] a plurality of lower abutting bolts arranged along the length direction of the wiper blade, the lower abutting bolts pass through the rear support and are threadedly matched with the rear support;

[0018] a plurality of lower abutting members arranged along the length direction of the wiper blade, the lower abutting members are fixed to the side of the adjustable seat facing the rear support, and the lower abutting members have lower abutting grooves facing the rear support;

[0019] Wherein, the upper abutting bolts and the upper abutting members thereof are above the adjusting shaft, the lower abutting bolts and the lower abutting members thereof are below the adjusting shaft, the upper abutting bolts are inserted into and abut against the upper abutting grooves of the upper abutting members, and the lower abutting bolts are inserted into and abut against the lower abutting grooves of the lower abutting members, so as to adjust the elevation angle position of the adjustable seat.

[0020] As another aspect of the present application, a method for using the scraper device is provided, which has selectable double-scraper mode and single-scraper mode.

[0021] In the double-scraper mode, the upper abutting bolts and the lower abutting bolts are in the loosened state, so that the adjustable seat is driven to deflect downward by the weight, and one side of the upper wiper blade and one side of the lower wiper blade simultaneously contact the outer circumferential surface of the rotating drum.

[0022] In the single-scraper mode, all the lower abutting bolts are inserted into the lower abutting grooves of the corresponding lower abutting members, so as to drive the adjustable seat to deflect upward, and one side of the lower wiper blade contacts the outer circumferential surface of the rotating drum.

[0023] The present application has the following beneficial effects:

[0024] 1. At least two scraper blades can be set to scrape the material on the outer circumference of the drum, which can better ensure that the material on the outer circumference of the drum is in a uniform thickness state, and the position of the scraper blades can be adjusted, thereby flexibly controlling the distance between the scraper blades and the outer circumference of the drum.

[0025] 2. During the use of the scraper device, there are selectable dual-scraper mode and single-scraper mode, so that the process mode of the scraper device can be flexibly switched according to specific conditions. Attached Figure Description

[0026] Figure 1 This is the assembly drawing of the present invention.

[0027] Figure 2 This is a schematic diagram of the invention in single-scraper mode.

[0028] Figure 3 This is a schematic diagram of the present invention in dual-scraper mode.

[0029] Figure 4 This is a schematic diagram of the adjustment scheme for the adjustment seat.

[0030] Figure 5 This is a schematic diagram showing the arrangement of the upper and lower abutment bolts. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-5 The present invention will be further illustrated by specific embodiments.

[0032] like Figure 1 As shown, a scraper device includes:

[0033] The movable frame 12 is equipped with a lower support shaft 13 and is rotatably connected to the frame 18 (the frame 18 itself is fixedly installed) via the lower support shaft 13.

[0034] Telescopic drive element 14, which is configured as a cylinder or other type of linear drive element, is rotatably connected to the frame 18 at one end and rotatably connected to the movable frame 12 at the other end to drive the movable frame 12 to rotate up and down.

[0035] Rear bracket 10, the rear bracket 10 is fixedly connected to the upper side of the movable frame 12;

[0036] Adjustable seat 5, which is equipped with an adjustment shaft 11 and is connected to the rear bracket 10 by rotating up and down through the adjustment shaft 11;

[0037] Two blades are installed on the adjustable seat 5, the blades are set as high-temperature-resistant flexible blades (such as silicon sponge), the blades are set as strip-shaped plate structures and the length direction of the blades is parallel to the axis of the rotating drum 19, and in use, the elevation angle of the adjustable seat 5 is adjusted so that the edges of all the blades or one of the blades contact the outer circumferential surface of the rotating drum 19.

[0038] In the embodiment, two blades are provided, which are an upper blade 1 and a lower blade 2, and the upper blade 1 is located above the lower blade 2. The adjustable seat 5 is set as a lever structure with the adjusting shaft 11 as a fulcrum, and the upper blade 1 and the lower blade 2 are arranged on the upper side and the lower side of the adjustable seat 5, and the height position of the adjusting shaft 11 is between the upper blade 1 and the lower blade 2.

[0039] In the embodiment, the blades, the adjustable seat 5 and the rear support 10 are all strip-shaped structures extending along the axis direction of the rotating drum 19, and the length range of the blades matches the axial length of the rotating drum 19, so that the scraping range of the blades covers the entire outer circumferential surface of the rotating drum 19.

[0040] The adjustable seat 5 is rotatably connected to the rear support 10 through the adjusting shaft 11, and the adjustable seat 5 is provided with an elevation angle adjusting assembly.

[0041] The elevation angle adjusting assembly comprises:

[0042] A plurality of upper abutting bolts 7 arranged along the length direction of the blades, the upper abutting bolts 7 pass through the rear support 10 and are threadedly matched with the rear support 10;

[0043] A plurality of upper abutting pieces 6 arranged along the length direction of the blades, the upper abutting pieces 6 are fixed to the side of the adjustable seat 5 facing the rear support 10, and the upper abutting pieces 6 have upper abutting grooves 6a facing the rear support 10;

[0044] A plurality of lower abutting bolts 9 arranged along the length direction of the blades, the lower abutting bolts 9 pass through the rear support 10 and are threadedly matched with the rear support 10;

[0045] A plurality of lower abutting pieces 8 arranged along the length direction of the blades, the lower abutting pieces 8 are fixed to the side of the adjustable seat 5 facing the rear support 10, and the lower abutting pieces 8 have lower abutting grooves 8a facing the rear support 10.

[0046] Among them, the upper abutting bolt 7 and the upper abutting piece 6 thereof are above the adjusting shaft 11, the lower abutting bolt 9 and the lower abutting piece 8 thereof are below the adjusting shaft 11, the upper abutting bolt 7 is inserted and abuts against the upper abutting groove 6a of the upper abutting piece 6, and the lower abutting bolt 9 is inserted and abuts against the lower abutting groove 8a of the lower abutting piece 8.

[0047] When adjusting the elevation angle of the adjustable seat 5, the upper abutment bolt 7 and / or the lower abutment bolt 9 can be turned. By using the axial movement of the upper abutment bolt 7 and / or the lower abutment bolt 9, the force of the upper abutment bolt 7 and / or the lower abutment bolt 9 against the adjustable seat 5 can be controlled, thereby driving the adjustable seat 5 to rotate up and down around the adjusting shaft 11 as the fulcrum, thus adjusting the elevation angle position of the adjustable seat 5.

[0048] Each scraper is equipped with a fixing component that secures it to the adjustable base 5.

[0049] To facilitate locking the scraper position, the aforementioned fixing components include:

[0050] A pair of fixed pressure plates 3, the two fixed pressure plates 3 clamp the scraper blade and expose the scraping side of the scraper blade;

[0051] Several sets of nuts are used to fix the bolts 4. The fixing bolts 4 pass through the fixing pressure plate 3, the scraper and the adjustable seat 5, and the scraper is locked between the two fixing pressure plates 3 by the nuts.

[0052] As can be seen from the above, the scraper blade can be disassembled and replaced.

[0053] To further adjust the distance between the adjustable seat 5, the scraper, and the rotating drum 19, the position of the rotation fulcrum of the movable frame 12 in this embodiment can be adjusted, as follows: Figure 4 , 5 As shown, two adjusting seats 17 and two seated bearings 15 are provided. Each adjusting seat 17 is equipped with a seated bearing 15 that can be adjusted horizontally along the radial direction of the drum 19. The lower support shaft 13 is fixedly connected to the movable frame 12, and the two shaft ends of the lower support shaft 13 are respectively rotatably connected to the two seated bearings 15.

[0054] like Figure 4 As shown, the aforementioned adjusting seat 17 has two horizontally extending lower adjusting elongated holes 17a arranged vertically and horizontally. Each bearing 15 is equipped with a pair of locking bolts 16 with fitted nuts. The two locking bolts 16 pass through the two lower adjusting elongated holes 17a respectively and are fixedly connected to the upper and lower ends of the bearing 15. The lower adjusting elongated holes 17a are used to adjust the position of the rotation fulcrum of the movable frame 12, thereby further controlling the distance between the adjustable seat 5, the scraper and the drum 19.

[0055] When using the scraper device, the telescopic drive element 14 drives the movable frame 12 to rotate toward the drum 19 to a certain angle so that the scraper blade contacts the drum 19.

[0056] During the use of the scraper device, there are selectable dual-scraper mode and single-scraper mode, which allows the process mode of the scraper device to be flexibly switched according to specific circumstances.

[0057] As Figure 3 shown, in the double-blade mode, the upper and lower abutting bolts 7 and 9 are in the loosened state, so that the adjustable seat 5 is driven downward by the weight to deflect, and the upper and lower blades 1 and 2 simultaneously contact the outer periphery of the rotating drum 19 (in this embodiment, both blades contact the upper position of the rotating drum 19), so that the release agent (silicone oil emulsion) on the outer periphery of the rotating drum 19 can be scraped by the upper and lower blades 1 and 2 at the same time, so that the thickness of the release agent on the outer periphery of the rotating drum 19 is in a uniform state, and the subsequent process can be smoothly carried out.

[0058] As Figure 2 shown, in the single-blade mode, all the lower abutting bolts 9 are inserted into the lower abutting grooves 8a of the corresponding lower abutting members 8 to drive the adjustable seat 5 to deflect upward, so that the lower blade 2 contacts the outer periphery of the rotating drum 19 to scrape off the excess release agent on the outer periphery of the rotating drum 19.

[0059] The above is the preferred embodiment of the present application, and those skilled in the art can make various transformations or improvements on the basis of the above, and these transformations or improvements shall belong to the protection scope of the present application without departing from the general concept of the present application.

Claims

1. A doctor blade device, characterized in that, The utility model relates to a kind of adjustable seat (5), the adjustable seat (5) is configured with adjusting shaft (11) and is connected with rear support (10) by adjusting shaft (11) rotationally adjustably in upper and lower directions; At least two installation on adjustable seat (5) blade, the blade is provided as strip-shaped plate structure and its length direction is parallel to the axis of rotating drum (19), in use, the elevation angle of adjustable seat (5) is adjusted to make the edge of all blades or one blade contact the outer circumferential surface of rotating drum (19); Wherein, the blade is provided with two, is upper blade (1) and lower blade (2), and the upper blade (1) is in the position above the lower blade (2); The adjustable seat (5) is provided as lever structure with adjusting shaft (11) as fulcrum, and the upper blade (1) and the lower blade (2) are divided on the upper side and the lower side of the adjustable seat (5), and the height position of the adjusting shaft (11) is between the upper blade (1) and the lower blade (2); The adjustable seat (5) is connected with rear support (10) rotationally in upper and lower directions by adjusting shaft (11), and the adjustable seat (5) is provided with elevation angle adjusting assembly; The elevation angle adjusting assembly comprises: A plurality of upper abutting bolts (7) arranged along the length direction of the blade, the upper abutting bolt (7) passes through rear support (10) and is threadedly connected with rear support (10); A plurality of upper abutting pieces (6) arranged along the length direction of the blade, the upper abutting piece (6) is fixed to the side of the adjustable seat (5) facing rear support (10), and the upper abutting piece (6) has an upper abutting groove (6a) facing rear support (10); A plurality of lower abutting bolts (9) arranged along the length direction of the blade, the lower abutting bolt (9) passes through rear support (10) and is threadedly connected with rear support (10); A plurality of lower abutting pieces (8) arranged along the length direction of the blade, the lower abutting piece (8) is fixed to the side of the adjustable seat (5) facing rear support (10), and the lower abutting piece (8) has a lower abutting groove (8a) facing rear support (10); Wherein, the upper abutting bolt (7) and the upper abutting piece (6) thereof are above the adjusting shaft (11), the lower abutting bolt (9) and the lower abutting piece (8) thereof are below the adjusting shaft (11), the upper abutting bolt (7) is inserted into and abuts against the upper abutting groove (6a) of the upper abutting piece (6), and the lower abutting bolt (9) is inserted into and abuts against the lower abutting groove (8a) of the lower abutting piece (8), so as to adjust the elevation angle position of the adjustable seat (5). Each blade is provided with a fixing assembly for fixing it to the adjustable seat (5); The fixing assembly comprises: ​ ​ 2. A doctor blade apparatus as claimed in claim 1, wherein: ​ ​ A pair of fixed pressing plates (3) clamping the wiper blade and exposing one side of the wiper blade for scraping; A plurality of sets of fixed bolts (4) passing through the fixed pressing plates (3), the wiper blade and the adjustable seat (5), and locking the wiper blade between the two fixed pressing plates (3) through nuts.

3. A doctor blade apparatus as claimed in claim 1, wherein: Two adjusting seats (17) and two bearing seats (15) are further included, each adjusting seat (17) being provided with one bearing seat (15) adjustable horizontally along the radial direction of the rotating drum (19), the lower supporting shaft (13) being fixedly connected with the movable frame (12), and the two axial ends of the lower supporting shaft (13) being connected with the two bearing seats (15) in a rotating manner.

4. A doctoring device according to claim 3, wherein: The adjusting seat (17) is provided with two lower adjusting long circular holes (17a) arranged in an upper and lower interval and extending horizontally, and each bearing seat (15) is provided with a pair of locking bolts (16) of sets of nuts, the two locking bolts (16) being fixedly connected with the upper and lower ends of the bearing seat (15) by passing through the two lower adjusting long circular holes (17a).

5. A doctoring apparatus as claimed in any one of claims 1 to 4, wherein: The wiper blade is a high-temperature-resistant flexible blade.

6. A method of using the doctor blade apparatus of claim 1, wherein, The method has selectable double-wiper mode and single-wiper mode; In the double-wiper mode, the upper abutting bolt (7) and the lower abutting bolt (9) are in a loosened state, so that the adjustable seat (5) is driven to deflect downward by gravity, and one side of the upper wiper blade (1) and one side of the lower wiper blade (2) simultaneously contact the outer circumferential surface of the rotating drum (19); In the single-wiper mode, all the lower abutting bolts (9) are inserted into the lower abutting grooves (8a) of the corresponding lower abutting members (8), so as to drive the adjustable seat (5) to deflect upward, and one side of the lower wiper blade (2) contacts the outer circumferential surface of the rotating drum (19).

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