CN216942271U

CN216942271U - Scraper fixture device and alignment film printing machine

Info

Publication number: CN216942271U
Application number: CN202220475784.3U
Authority: CN
Inventors: 孙淑丁; 马晓旭
Original assignee: InfoVision Optoelectronics Kunshan Co Ltd
Current assignee: InfoVision Optoelectronics Kunshan Co Ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-07-12
Anticipated expiration: 2032-03-07

Abstract

The utility model discloses a scraper fixture device and an alignment film printing machine, and relates to the technical field of liquid crystal display. The scraper clamp device comprises a base, a clamping plate and a driving mechanism; the clamping plate is rotationally connected with the base through a first rotating shaft; the clamping plate comprises a stress part and a clamping part, the stress part and the clamping part are respectively positioned on two sides of the first rotating shaft, and the scraper is arranged between the clamping part and the base; the driving mechanism is arranged on the base and located between the stress part and the base, and the driving mechanism drives the stress part to rotate so as to drive the clamping part to compress or loosen the scraper. Compared with the prior art, the scraper clamp device has the advantages that a plurality of first fastening bolts do not need to be disassembled, force is only applied to the stress part, the clamping part is controlled to rotate in different directions, the scraper can be pressed or loosened, and the scraper is simpler and more convenient to disassemble and assemble. The alignment film printing machine adopts the scraper clamping device to clamp the scraper, so that the scraper is easy to replace, and the working efficiency of the alignment film printing machine is improved.

Description

Scraper fixture device and alignment film printing machine

Technical Field

The utility model relates to the technical field of liquid crystal display, in particular to a scraper fixture device and an alignment film printing machine.

Background

In the field of thin film transistor liquid crystal display technology, the liquid crystal display panel usually uses an alignment film printing plate coating printing technology to form an alignment film.

The alignment film printer implementing the alignment film printing plate coating printing technology may include: the rubbing film printing plate transfers the rubbing solution on the surface of the rubbing film printing plate to a glass substrate through rotation, namely, the rubbing pattern is transferred to the glass substrate to form a rubbing film on the substrate. The effect of scraper is when the reticulation roller rotates, and it is even to scrape to join in marriage the solution with rubbing on the reticulation roller to make the alignment film that forms on the base plate more even. When the alignment film printing machine is used for opening and changing lines, when the scraper is worn or has moire, the machine needs to be stopped, or the scraper needs to be removed for replacement after the line opening is finished.

FIG. 1 is a cross-sectional view of a prior art doctor blade holder assembly; FIG. 2 is a second cross-sectional view of a prior art doctor blade holder assembly; as shown in fig. 1 and 2, in the doctor blade clamping device in the prior art, the doctor blade 100 is clamped by the base 1 and the clamping plate 2, but the base 1 and the clamping plate 2 are fastened and connected by the first fastening bolt 7, when the doctor blade 100 is replaced, the first fastening bolts 7 need to be detached and installed, the detaching and installing process is cumbersome, and the maintenance efficiency of the alignment film printing machine is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a scraper clamp device and an alignment film printing machine.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a doctor blade holder apparatus comprising:

a base;

the clamping plate is rotationally connected with the base through a first rotating shaft; the clamping plate comprises a stress part and a clamping part, the stress part and the clamping part are respectively positioned on two sides of the first rotating shaft, and the scraper is arranged between the clamping part and the base;

the driving mechanism is arranged on the base and located between the stress part and the base, and the driving mechanism drives the stress part to rotate so as to drive the clamping part to compress or loosen the scraper.

As an alternative to the doctor blade holder device, the driving mechanism includes a cam and a rotating member, the cam is disposed below the force receiving portion, the rotating member passes through the base and is fixedly connected to the cam, the rotating member rotates to drive the cam to rotate, and when the protruding side of the cam abuts against the force receiving portion, the holding portion presses the doctor blade.

As an alternative of the scraper clamping device, the rotating member is a torsion bolt, the torsion bolt comprises a bolt head and a screw rod, and a torsion wrench is matched with the bolt head to rotate the torsion bolt; the screw rod comprises a screw column section and a screw thread section, the screw column section is arranged between the bolt head and the screw thread section, a first through hole is formed in the base, the screw column section is matched with the first through hole, a screw thread hole is formed in the cam, and the screw thread section is in threaded connection with the screw thread hole.

As an alternative of the doctor blade holder device, the torque bolt further includes a limiting portion provided between the screw cylinder section and the screw thread section for limiting the movement of the rotating member in the axial direction thereof.

As an alternative to the doctor blade holder device, the doctor blade holder device further includes a fixing member connected to the rotating member, the fixing member being capable of fixing the rotating member when the convex side of the cam abuts against the force receiving portion.

As an alternative to the doctor blade holder device, the fixing assembly includes a backstop ratchet wheel and a pawl, the backstop ratchet wheel is fixed on the rotating member and can rotate along with the rotating member; one end of the pawl is provided with a backstop braking head, and the other end of the pawl is rotatably connected with the base; the periphery of the stopping ratchet wheel is uniformly provided with a plurality of ratchet teeth, and the stopping brake head is abutted between two adjacent ratchet teeth so that the pawl can brake the rotating member in one direction.

As an alternative of the scraper clamp device, a second rotating shaft is fixed on the base, and the pawl is rotatably connected with the second rotating shaft.

As an alternative of the scraper clamping device, the base includes a placing groove, one side of the placing groove is communicated with the outside, the clamping plate is arranged in the placing groove, the clamping portion is arranged close to one side of the placing groove communicated with the outside, one end of the scraper is clamped between the clamping portion and the base, and the other end of the scraper extends out of the base.

As an alternative of the scraper fixture device, the first rotating shaft penetrates through two side walls of the placing groove, one side of each of the two side walls of the placing groove is provided with a limiting plate, a limiting hole is formed in each limiting plate, the first rotating shaft penetrates through the limiting holes and is connected with the clamping plates, and the limiting holes can limit the first rotating shaft to move along the axis direction of the first rotating shaft.

An alignment film printing machine comprises the scraper clamp device according to any one of the above aspects.

The utility model has the beneficial effects that:

according to the scraper clamp device provided by the utility model, the clamping plate is rotatably connected with the base through the first rotating shaft, the stress part and the clamping part of the clamping plate are respectively positioned at two sides of the first rotating shaft, the driving mechanism is positioned between the stress part and the base, and the driving mechanism drives the stress part to rotate so as to drive the clamping part to press or loosen the scraper. Compared with the prior art, a plurality of first fastening bolts do not need to be dismantled, force is only needed to be applied to the stress part, the clamping part is controlled to rotate towards different directions, the scraper can be pressed tightly or loosened, and the scraper is simpler and more convenient to disassemble and assemble.

According to the alignment film printing machine, the scraper is clamped by the scraper clamping device, so that the scraper is easy to replace, and the working efficiency of the alignment film printing machine is improved.

Drawings

FIG. 1 is a cross-sectional view of a prior art doctor blade holder assembly;

FIG. 2 is a second cross-sectional view of a prior art doctor blade holder assembly;

FIG. 3 is a first cross-sectional view of a doctor blade holder assembly provided in accordance with an embodiment of the present invention;

FIG. 4 is a second cross-sectional view of a doctor blade holder assembly in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural view of a fixing assembly provided in accordance with an embodiment of the present invention;

fig. 6 is a schematic view of a structure of a torque bolt and a ratchet according to an embodiment of the present invention.

In the figure:

100. a scraper;

1. a base; 2. a splint; 3. a first rotating shaft; 4. a drive mechanism; 5. a fixing component; 6. a limiting plate; 7. a first fastening bolt; 8. a second fastening bolt;

11. a placement groove; 21. a force receiving portion; 22. a clamping portion; 41. a cam; 42. a torsion bolt; 51. a backstopping ratchet wheel; 52. a pawl; 53. a second rotating shaft;

511. ratchet teeth; 521. stopping the brake head; 421. a bolt head; 422. a stud segment; 423. a threaded segment; 424. a limiting part.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

FIG. 3 is a first cross-sectional view of a doctor blade holder assembly in accordance with an embodiment of the present invention; FIG. 4 is a second cross-sectional view of a doctor blade holder assembly in accordance with an embodiment of the present invention; as shown in fig. 3 and 4, the present embodiment provides a doctor blade holder apparatus including a base 1, a chucking plate 2, and a driving mechanism 4; the clamping plate 2 is rotationally connected with the base 1 through a first rotating shaft 3; the clamping plate 2 comprises a stress part 21 and a clamping part 22, the stress part 21 and the clamping part 22 are respectively positioned at two sides of the first rotating shaft 3, and the scraper 100 is arranged between the clamping part 22 and the base 1. The driving mechanism 4 is disposed on the base 1 and located between the force-receiving portion 21 and the base 1, and the driving mechanism 4 drives the force-receiving portion 21 to rotate, so as to drive the clamping portion 22 to press or loosen the scraper 100.

Through rotating splint 2 and base 1 through first pivot 3 and being connected, the atress portion 21 and the clamping part 22 of splint 2 are located the both sides of first pivot 3 respectively, and actuating mechanism 4 is located between atress portion 21 and the base 1, and actuating mechanism 4 drive atress portion 21 rotates, can drive clamping part 22 and compress tightly or loosen scraper 100. Compared with the prior art, a plurality of first fastening bolts 7 do not need to be disassembled, force is only needed to be applied to the stress part 21, the clamping part 22 is controlled to rotate towards different directions, the pressing of the scraper 100 or the loosening of the scraper 100 can be achieved, and the scraper 100 is simpler and more convenient to disassemble and assemble.

As an alternative to the doctor blade holder apparatus, the base 1 includes a placement groove 11, one side of the placement groove 11 communicates with the outside, the chucking plate 2 is placed in the placement groove 11, the chucking portion 22 is provided near one side of the placement groove 11 communicating with the outside, one end of the doctor blade 100 is chucked between the chucking portion 22 and the base 1, and the other end extends out of the base 1.

Through set up a standing groove 11 that one side and outside intercommunication on the base 1 of cuboid, place splint 2 in standing groove 11, rotate with base 1 through first pivot 3 and be connected, the clearance between the lower surface of atress portion 21 and the bottom of standing groove 11 is greater than the clearance of clamping part 22 and the bottom of standing groove 11 to exert force to atress portion 21 from the lower surface of atress portion 21. The gap between the nip portion 22 and the bottom of the placing groove 11 can be set according to the thickness of the blade 100.

In this embodiment, the driving mechanism 4 is disposed below the force-receiving portion 21, drives the force-receiving portion 21 to move upward, and drives the clamping portion 22 to move toward the bottom of the placing slot 11 to clamp the scraper 100, and drives the force-receiving portion 21 to move downward, and drives the clamping portion 22 to move toward the direction away from the bottom of the placing slot 11 to loosen the scraper 100.

Of course, in other embodiments, the driving mechanism 4 may also be disposed on one side of the force-receiving portion 21 away from the clamping portion 22, and fixedly or slidably disposed on the sidewall of the opposite side of the placing slot communicating with the outside, the driving mechanism 4 applies a downward force to the force-receiving portion 21 from the side of the force-receiving portion 21, and the clamping portion 22 moves away from the bottom of the placing slot 11 to release the scraper 100; the driving mechanism 4 applies an upward force to the force receiving portion 21 from the side of the force receiving portion 21, and the nip portion 22 moves in a direction approaching the bottom of the placement groove 11 to press the scraper 100.

As an alternative of the scraper fixture device, the first rotating shaft 3 penetrates through two opposite side walls of the placing groove 11, limiting plates 6 are arranged on one sides of the two side walls of the placing groove 11, limiting holes are formed in the limiting plates 6, the first rotating shaft 3 penetrates through the limiting holes to be connected with the clamping plates 2, and the limiting holes can limit the first rotating shaft 3 to move along the axis direction of the first rotating shaft.

Limiting plate 6 passes through 8 fixed connection of second fastening bolt on the lateral wall of standing groove 11, and for the convenience of limiting plate 6's is fixed, limiting plate 6 sets up in the one side that splint 2 was kept away from to the lateral wall of standing groove 11. The first rotating shaft 3 is limited by the limiting hole on the limiting plate 6 to rotate only but not move up and down, so that the gap between the clamping part 22 and the bottom of the placing groove 11 and the gap between the stress part 21 and the bottom of the placing groove 11 are prevented from changing, and the compression of the scraper 100 is prevented from being influenced.

As an alternative to the blade holding device, the driving mechanism 4 includes a cam 41 and a rotating member, the cam 41 is disposed below the force receiving portion 21, the rotating member passes through the base 1 and is fixedly connected to the cam 41, the rotating member rotates to drive the cam 41 to rotate, and when the convex side of the cam 41 abuts against the force receiving portion 21, the holding portion 22 presses the blade 100. The rotating piece rotates to drive the cam 41 to rotate, different positions on the outer side of the cam 41 are abutted with the stress part 21, the stress part 21 can be lifted or lowered, when the convex side of the cam 41 is abutted with the stress part 21, the stress part 21 is lifted to the limit position, at this time, the gap between the clamping part 22 and the bottom of the placing groove 11 is minimum, and the pressing force on the scraper 100 is maximum.

Of course, in other embodiments, the driving mechanism 4 is not limited to the cam 41 and the rotor, and may be a linear driving mechanism such as an electric push rod that drives the force receiving portion 21 to move up or down.

FIG. 5 is a schematic structural view of a fixing assembly provided in accordance with an embodiment of the present invention; as an alternative to the doctor blade holder apparatus, as shown in fig. 5, the doctor blade holder apparatus further includes a fixing member 5, the fixing member 5 being connected to the rotating member, the fixing member 5 being capable of fixing the rotating member when the convex side of the cam 41 abuts against the force receiving portion 21. When the driving mechanism 4 drives the force-receiving portion 21 to rotate, and the clamping portion 22 clamps the scraper 100, the fixing component 5 fixes the rotating member to prevent the rotating member from rotating and affecting the stability of clamping by the clamping portion 22.

As an alternative to the doctor blade holder device, the fixed assembly 5 comprises a backstop ratchet 51 and a pawl 52, the backstop ratchet 51 being fixed to the rotating member so as to be rotatable therewith; one end of the pawl 52 is provided with a backstop braking head 521, and the other end is rotationally connected with the base 1; a plurality of ratchet teeth 511 are uniformly distributed on the periphery of the retaining ratchet 51, and a retaining brake head 521 abuts between two adjacent ratchet teeth 511, so that the pawl 52 can brake the rotating piece in one direction.

As an alternative to the doctor blade holder device, a second rotating shaft 53 is fixed on the base 1, and the pawl 52 is rotatably connected with the second rotating shaft 53.

As shown in fig. 4, when the rotating member drives the cam 41 to rotate clockwise, the anti-backup ratchet 51 and the pawl 52 rotate clockwise at the same time, and the anti-backup brake head 521 is shifted upwards; when the rotating member drives the cam 41 to rotate counterclockwise, the anti-backup ratchet 51 and the pawl 52 rotate counterclockwise at the same time, and the anti-backup brake head 521 is clamped in the ratchet teeth 511, so that the rotating member cannot rotate continuously, thereby avoiding the clamping failure of the clamping portion 22.

In other embodiments, the fixing component 5 may also be a snap, and when the rotating member drives the cam 41 to rotate until the convex side of the cam 41 abuts against the force receiving portion 21, the rotating member is fixed by the snap.

FIG. 6 is a schematic view of a torque bolt and a ratchet according to an embodiment of the present invention; as an alternative to the doctor blade holder device, as shown in fig. 6, the rotating member is a torsion bolt 42, the torsion bolt 42 includes a bolt head 421 and a screw, and a torsion wrench is engaged with the bolt head 421 to rotate the torsion bolt 42; the screw rod includes screw bolt section 422 and screw thread section 423, and screw bolt section 422 sets up between bolt head 421 and screw thread section 423, is provided with first through-hole on the base 1, and screw bolt section 422 and first through-hole cooperation are provided with the screw hole in the middle of cam 41, and screw thread section 423 and screw hole spiro union. The torque of the torque bolt 42 can be accurately controlled by matching the torque wrench with the bolt head 421 of the torque bolt 42, so that the cam 41 is driven to rotate, when the protruding side of the cam 41 abuts against the stressed part 21, the torque bolt 42 is stopped to rotate in time, and the situation that the fixing of the fixing component 5 fails and the scraper 100 cannot be clamped due to overlarge force applied to the rotating part is avoided.

A first through hole is provided on one of two opposite sidewalls of the placement groove 11, and a torsion bolt 42 is coupled with a cam 41 placed between the force receiving portion 21 and the bottom of the placement groove 11 through the first through hole.

As an alternative of the blade holder device, the torsion bolt 42 further includes a stopper portion 424, and the stopper portion 424 is provided between the screw cylinder section 422 and the screw thread section 423 for restricting the rotation member from moving in the axial direction thereof.

The diameter of the limiting part 424 is larger than the outer diameter of the screw rod of the torque bolt 42, the limiting part 424 is arranged on one side of the first through hole close to the cam 41, the side of the first through hole far away from the cam 41 is limited through the bolt head 421, and the bolt head 421 and the limiting part 424 act together, so that the torque bolt 42 can only rotate under the action of the torque wrench without driving the cam 41 to move.

The retaining ratchet 51 may be provided between the bolt head 421 and the side wall of the placing groove 11, or may be provided between the stopper 424 and the side wall of the placing groove 11.

This embodiment still provides an alignment film printing machine, including foretell scraper fixture device, scraper 100 sets up between the clamping part 22 and the base 1 of splint, rotates through actuating mechanism 4 drive forced part 21, drives clamping part 22 and compresses tightly or loosen scraper 100 for scraper 100 is easily changed, has improved the work efficiency who orients film printing machine.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. A doctor blade holder apparatus, comprising:

a base (1);

the clamping plate (2) is rotatably connected with the base (1) through a first rotating shaft (3); the clamping plate (2) comprises a stress part (21) and a clamping part (22), the stress part (21) and the clamping part (22) are respectively positioned at two sides of the first rotating shaft (3), and the scraper (100) is arranged between the clamping part (22) and the base (1);

the driving mechanism (4) is arranged on the base (1) and located between the stress part (21) and the base (1), and the driving mechanism (4) drives the stress part (21) to rotate so as to drive the clamping part (22) to compress or loosen the scraper (100).

2. The doctor blade holder device according to claim 1, characterised in that the driving mechanism (4) comprises a cam (41) and a rotating member, the cam (41) being arranged below the force-receiving portion (21), the rotating member passing through the base (1) and being fixedly connected to the cam (41), the rotating member rotating and bringing the cam (41) into rotation, the clamping portion (22) pressing the doctor blade (100) when the convex side of the cam (41) abuts the force-receiving portion (21).

3. A doctor blade holder device according to claim 2, characterized in that the turning piece is a torsion bolt (42), which torsion bolt (42) comprises a bolt head (421) and a screw, which torsion wrench cooperates with the bolt head (421) to turn the torsion bolt (42); the screw rod comprises a screw column section (422) and a screw thread section (423), the screw column section (422) is arranged between the screw head (421) and the screw thread section (423), a first through hole is formed in the base (1), the screw column section (422) is matched with the first through hole, a screw thread hole is formed in the cam (41), and the screw thread section (423) is in threaded connection with the screw thread hole.

4. The doctor blade holder device according to claim 3, characterized in that the torsion bolt (42) further includes a stopper portion (424), the stopper portion (424) being provided between the screw cylindrical section (422) and the threaded section (423) for restricting the rotation member from moving in the axial direction thereof.

5. A doctor blade holder device according to claim 2, characterized in that the doctor blade holder device further includes a fixing assembly (5), the fixing assembly (5) being connected to the rotary member, the fixing assembly (5) being able to fix the rotary member when the convex side of the cam (41) abuts the force receiving portion (21).

6. A doctor blade holder device according to claim 5, characterized in that the fixed assembly (5) comprises a backstop ratchet (51) and a pawl (52), the backstop ratchet (51) being fixed to the rotary member so as to be rotatable therewith; one end of the pawl (52) is provided with a backstop braking head (521), and the other end of the pawl is rotatably connected with the base (1); a plurality of ratchet teeth (511) are uniformly distributed on the periphery of the retaining ratchet wheel (51), and the retaining brake head (521) is abutted between two adjacent ratchet teeth (511) so that the pawl (52) can brake the rotating piece in one direction.

7. Doctor blade holder device according to claim 6, characterised in that a second pivot shaft (53) is fixed to the base (1), the pawl (52) being in rotational connection with the second pivot shaft (53).

8. The doctor blade holder device according to any of claims 1-7, characterised in that the base (1) comprises a placement groove (11), that one side of the placement groove (11) communicates with the outside, that the clamping plate (2) is placed in the placement groove (11), that the clamping portion (22) is arranged close to the side of the placement groove (11) communicating with the outside, and that the doctor blade (100) is clamped with one end between the clamping portion (22) and the base (1) and with the other end extending out of the base (1).

9. The doctor blade holder device according to claim 8, characterized in that the first shaft (3) passes through two side walls of the holding groove (11), a limiting plate (6) is disposed on each of two side walls of the holding groove (11), a limiting hole is disposed on the limiting plate (6), the first shaft (3) passes through the limiting hole to be connected with the clamping plate (2), and the limiting hole can limit the first shaft (3) to move along the axial direction thereof.

10. An alignment film printing machine comprising the doctor blade holder device according to any one of claims 1 to 9.