CN116294510A

CN116294510A - Liquid crystal display substrate contact type baking box

Info

Publication number: CN116294510A
Application number: CN202111521940.1A
Authority: CN
Inventors: 潘明华
Original assignee: Jiangsu Meike Dingrong Intelligent Equipment Manufacturing Co ltd
Current assignee: Jiangsu Meike Dingrong Intelligent Equipment Manufacturing Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2023-06-23

Abstract

The invention discloses a liquid crystal display substrate contact type baking oven, wherein a baking partition plate and an in-oven bracket are fixedly arranged in the oven body, and an oven window and a baking oven door are arranged on one side wall of the oven body; sealing strips are embedded on the top cover and the baking oven door; the substrate jacking device is installed on the lower side of the in-box support, and comprises a jacking motor and a jacking rotating shaft which are in transmission connection with each other, a jacking swing arm is fixedly arranged on the jacking rotating shaft, a jacking sliding pin is fixedly arranged at the overhanging end of the jacking swing arm, the jacking sliding pin is slidably arranged in a jacking sliding chute seat, the jacking sliding chute seat is fixedly connected to a jacking rod support, a jacking rod is vertically arranged on the jacking rod support, and the jacking rod penetrates through a corresponding hole in the baking partition plate to stretch to the baking cavity. The contact type baking oven not only can realize autonomous jacking transfer of the glass substrate, has high automation degree, but also has uniform heating, stable baking effect and strict baking cavity sealing.

Description

Liquid crystal display substrate contact type baking box

Technical Field

The invention relates to Liquid Crystal Display (LCD) liquid crystal module production equipment, in particular to a contact baking oven for baking an LCD glass substrate (sheet).

Background

The glass substrate is an important component for forming a Liquid Crystal Display (LCD), has relatively strict requirements on glass surface defects, and has performances and quality performances related to basic indexes such as resolution, imaging effect, thickness, weight and the like of flat panel display; in the process of manufacturing and processing the glass substrate of the liquid crystal display, the glass substrate needs to be baked to remove the organic solvent or the water stain on the surface.

The existing glass substrate baking equipment mainly comprises a baking box body and a rack, and has the advantages of simple structure, but obvious defects in the aspects of structure and process: firstly, a substrate in a baking cavity cannot independently lift up and move, and feeding or taking materials are needed by external equipment, so that not only is the degree of automation and the production efficiency low, but also secondary pollution of the baked substrate and damage of a thin glass plate are easy to form; secondly, the joint surfaces of the oven body, the oven cover, the oven door and other opening and closing parts are not tightly sealed, so that mutual leakage of the atmosphere inside and outside the oven cavity is easy to cause leakage pollution of the volatile solvent, and the volatile waste gas cannot be effectively recycled; thirdly, the baking cavity of the baking oven body is mainly formed by the oven body and the baking plate, the baking plate is the only heating component for generating heating energy, condensation and dew of baking waste gas are easily generated on non-heating components such as the oven body, the oven cover and the oven door, and the baking waste is remained, so that the baked clean glass substrate is polluted again.

Disclosure of Invention

Aiming at the defects existing in the prior art, the technical problem to be solved by the invention is to provide the liquid crystal display substrate contact type baking oven which not only can realize the autonomous jacking transfer of the glass substrate, but also has the advantages of high automation degree, uniform heating, stable baking effect and strict sealing of a baking cavity.

In order to solve the technical problems, the liquid crystal display substrate contact type baking box comprises a box body, wherein the box body is of a rectangular frame type structure, a box top cover is movably arranged at the top of the box body, a baking partition plate and an inner box support are fixedly arranged in the box body, the baking partition plate, the box body and the box top cover enclose a baking cavity, a box bottom support is fixedly arranged at the lower opening end of the box body, the box bottom cavity is positioned between the baking partition plate and the box bottom support, and the inner box support is positioned in the box bottom cavity; an oven window is arranged on one side wall of the oven body, and an oven door is movably arranged on the oven wall corresponding to the oven window; sealing strips are embedded on the top cover and the baking oven door; the base plate jacking device is installed on the lower side of the in-box support, and comprises a jacking motor and a jacking rotating shaft, wherein the jacking rotating shaft is in transmission connection with the jacking motor, a jacking swing arm is fixedly arranged on the jacking rotating shaft, a jacking sliding pin is fixedly arranged at the overhanging end of the jacking swing arm, the jacking sliding pin is slidably arranged in a jacking sliding groove seat, the jacking sliding groove seat is fixedly connected onto a push rod support, a jacking rod is vertically arranged on the push rod support, and the jacking rod penetrates through a corresponding hole in the baking partition plate to stretch into the baking cavity.

Preferably, the periphery of the baking partition plate is hermetically connected with the inner wall of the box body, the baking partition plate comprises a heating plate, the heating plate is clamped between the upper guard plate and the lower guard plate, the heating plate is a ceramic heating plate, and a plurality of jacking rod holes are formed in the baking plate.

Preferably, the box top cover comprises a top cover wall plate, a heating plate and a heating insulation layer are embedded on the top cover wall plate, the heating plate is a ceramic heating plate, and the heating insulation layer is formed by an insulation board; a cover edge of the box top cover is hinged to the box body, and a cover stay bar is supported between the box top cover and the box body.

Preferably, the baking oven door comprises an oven door wall plate, a heating plate and a heating insulation layer are embedded on the oven door wall plate, the heating plate is a ceramic heating plate, and the heating insulation layer is composed of an insulation board; the baking oven door is fixedly arranged on an opening and closing pendulum shaft through an opening and closing connecting block, and the opening and closing pendulum shaft is in transmission connection with an opening and closing motor.

Preferably, the in-box support and the box bottom support are both in a frame structure, a plurality of baking plate supports are arranged on the box bottom support, and the baking partition plate is supported at the upper ends of the baking plate supports.

Preferably, the jacking motor is mounted on the in-box support through a jacking support, the jacking rotating shaft is rotatably supported on the in-box support, an output shaft of the jacking motor is connected with the jacking shaft through a coupling, at least two jacking swing arms are arranged on the jacking rotating shaft, and each jacking swing arm corresponds to one jacking chute seat.

Preferably, the jacking bracket is a frame structure movably arranged in the baking lower cavity, and a plurality of jacking rods are fixedly arranged on the jacking bracket through jacking connecting seats.

Preferably, the top of the jacking rod is provided with a jacking spring, the top end position of the jacking spring is higher than the top end of the jacking rod, and the jacking spring stiffness of the jacking rod on the outer periphery side is higher than that of the jacking spring on the jacking rod on the inner periphery side.

In the structure, firstly, the substrate jacking device is arranged at the lower side of the in-box bracket and drives the jacking rod on the ejector rod bracket through the jacking motor and the driven swing arm mechanism thereof; thereby realizing automatic jacking and placing or lifting of the baked glass sheets, facilitating feeding and discharging of the glass sheets and material taking and transferring, being convenient and quick and being beneficial to improving baking efficiency; the lifting rod for lifting the substrate penetrates through the baking partition plate and is lifted into the baking oven, so that the structure keeps the balance and stability of the heating temperature of the baking cavity, and the baking effect and the uniformity of a temperature field are effectively improved.

The top of the jacking rod is movably sleeved with the jacking spring, the top of the jacking spring is higher than the top of the jacking rod, and the jacking spring is contacted with the glass substrate, so that the direct jacking impact of the jacking rod on the glass substrate is avoided, the glass substrate is effectively protected, and the substrate is prevented from being damaged; particularly, the rigidity of the jacking spring on the jacking rod at the outer periphery side is higher than that of the jacking spring on the jacking rod at the inner periphery side, the response speed of the jacking spring with smaller rigidity is higher, when the jacking is carried out, the jacking rod and the jacking spring with smaller rigidity and positioned at the middle position of the substrate firstly jack up the substrate, then the peripheral ejector rods jack up the glass substrate again, so that the whole substrate is lifted in an arc shape, and the substrate jacking damage caused by negative pressure air suction of the substrate and the baking supporting plate is avoided; when the glass substrate is placed on the baking support plate, the lifting spring at the middle position enables the substrate to be firstly contacted with the baking support plate, then the periphery of the substrate is contacted with the baking support plate, the substrate is still placed in an arc shape, so that an air arch is prevented from being formed between the substrate and the support plate, the substrate is prevented from being damaged, and the baking quality is effectively ensured.

The sealing strip body of the sealing strip is provided with sealing sockets, sealing lips are symmetrically arranged on two sides of the sealing sockets, when the sealing strip is closed, wallboard sealing strips are inserted into the sealing sockets, the sealing lips are positioned on the sealing surfaces, so that double sealing is formed between the sealing strips and the sealing sockets as well as between the sealing lips and the sealing surfaces, sealing is tight and reliable, the leakage of volatile gases and other substances in the baking cavity is completely blocked, the baking cavity is led to the waste gas recovery device through the waste gas recovery pipe, environmental pollution is avoided, waste gas recycling is facilitated, resource waste is reduced, and as the baking partition plate for baking and heating is positioned between the baking cavity of the box and the lower cavity of the box, the jacking rod of the jacking mechanism penetrates through the baking partition plate from the lower cavity to enter the baking cavity for jacking of the substrate, the heat insulation effect of the baking cavity is also facilitated to be enhanced, the baking heat loss is reduced, the baking efficiency is improved, the baking effect is stabilized, and the glass substrate is heated more uniformly.

Drawings

FIG. 1 is a schematic top view of one embodiment of a touch oven for a liquid crystal display substrate in accordance with the present invention;

FIG. 2 is a schematic illustration of the structure of FIG. 1 with the roof removed;

FIG. 3 is a schematic view of the sectional A-A structure of FIG. 1;

FIG. 4 is a schematic top view of the in-tank rack and bottom rack of FIG. 3;

FIG. 5 is a schematic view of the assembled structure of the case, case top cover and oven door of FIG. 3;

FIG. 6 is an enlarged schematic view of the portion I of FIG. 5;

FIG. 7 is a schematic cross-sectional view of the sealing strip of FIG. 6;

FIG. 8 is an enlarged schematic view of section II of FIG. 5;

fig. 9 is a schematic view of the structure of the toaster door of fig. 6;

FIG. 10 is a schematic view of the substrate lifting device in FIG. 3;

FIG. 11 is an enlarged schematic view of the top of the lift pins of FIG. 10;

FIG. 12 is a schematic view of the structure of the lift pins and lift pin holders of FIG. 10;

FIG. 13 is a schematic view of the jack driving mechanism of FIG. 10;

fig. 14 is a schematic end view of an elevating chute seat.

In the figure, 1-box body, 2-baking partition plate, 3-box top cover, 4-box inner support, 5-lifting rod, 6-baking cavity exhaust port, 7-lower cavity exhaust port, 8-sealing strip, 9-baking box door, 10-lifting rod support, 11-box bottom support, 12-lifting chute seat, 13-lifting swing arm, 14-baking plate support, 15-lifting rotating shaft, 16-lifting rod connecting seat, 17-lifting support, 18-lifting motor, 19-box cover supporting rod, 20-box wall plate, 21-wall plate sealing insert, 22-sealing adhesive tape body, 23-sealing lip piece, 24-sealing insert, 25-top cover wall plate, 26-heating heat preservation layer, 27-heating plate, 28-box door wall plate, 29-upper protection plate, 30-lower protection plate, 31-opening and closing motor, 32-swinging shaft support, 33-opening and closing swinging shaft, 34-connecting block, 35-exhaust pipe, 36-air inlet pipe, 37-lifting sliding pin, 38-window, 39-lifting spring seat, 40-pin and 41-pin groove.

Detailed Description

Fig. 1 and 2 show an outline structure schematic diagram of a baking box unit, the baking box unit comprises a box body 1, the box body 1 is of a hexahedral rectangular frame body structure, a box top cover 3 is movably hinged at the top position of the box body 1, a baking box door 9 is movably arranged on one side surface of the box body 1, a baking partition plate 2 is arranged below the box top cover 3 in the box body 1, and a plurality of through jacking rod holes are formed in the baking partition plate 2. The other side surface opposite to the oven door 9 is provided with a case cover stay 19, one end of the case cover stay 19 is hinged on the case top cover 03, the other end of the case cover stay 19 is hinged on the side wall of the case body 1, and the case cover stay 19 is a common spring stay. An exhaust pipe 35 and an intake pipe 36 are oppositely arranged on the other two side walls of the box body 1, and the exhaust pipe 36 is communicated with an exhaust gas recovery pipe.

As shown in fig. 3 and 4, a baking partition plate 2 and an in-box bracket 4 are fixedly provided in the box 1. The periphery of the baking partition plate 2 is connected with the inner wall surface of the box body 1 in a sealing way, so that the inner wall surface of the box body 1 and the periphery of the baking partition plate 2 form seamless connection. As shown in fig. 8, the baking partition plate 2 comprises a heating plate 27, the heating plate 27 is clamped between an upper guard plate 29 and a lower guard plate 30, the upper guard plate 29 and the lower guard plate 30 can be aluminum alloy thin plates or stainless steel thin plates, and the heating plate 27 adopts high-temperature baking ceramic heating plates. The oven body 1, the baking partition board 2 and the oven top cover 3 enclose a baking cavity. A box bottom bracket 11 is fixedly arranged at the lower opening end of the box body 1, and a box body lower cavity which is opened downwards is formed between the baking partition plate 2 and the box bottom bracket 11.

The in-box support 4 and the bottom support 11 are all aluminum alloy section frames fixedly connected to the inner wall of the box body, and the in-box support 4 and the bottom support 11 are in-box support frames of the baking box unit. The box bottom bracket 11 is used for installing and supporting the baking plate support column 14, the lower end of the baking plate support column 14 is fixedly installed on the frame body of the box bottom bracket 11, and the upper end of the baking plate support column 14 is supported on the lower plate surface of the baking partition plate 2. A substrate jacking device is arranged at the lower side of the bracket 4 in the box.

As shown in fig. 5 and 6, the square short cylindrical box 1 comprises a box wall plate 20 made of a metal sheet, a heating plate 27 and a heating insulation layer 26 are embedded between the box wall plates 20 on the inner side and the outer side, the heating insulation layer 26 is positioned on the outer side of the box wall of the box 1, and the heating plate 27 is positioned on the inner side of the box wall. The heating plate 27 is made of ceramic heating plates, and the heating insulation layer 26 is made of common insulation boards. The sealing top surface and the sealing side surface of the box body 1 are respectively provided with a wallboard sealing insert 21 formed by folding the box body wall board 20 into a strip shape.

The box top cover 3 comprises a top cover wall plate 25 made of a metal sheet, a heating plate 27 and a heating insulation layer 26 are also embedded in the space between the top cover wall plates 25, the heating plate 27 is also made of ceramic heating plates, and the heating insulation layer 26 is made of a common heat insulation plate. The oven door 9 comprises a door wall plate 28, a heating plate 27 and a heating insulation layer 26 are also embedded in the interval of the door wall plate 28, the heating plate 27 is also made of ceramic heating plates, and the heating insulation layer 26 is made of common heat insulation boards.

The box body 1 is divided into a baking cavity and a box body lower cavity by a baking partition plate 2, a baking cavity exhaust port 6 is arranged in the baking cavity, and a lower cavity exhaust port 7 is arranged in the box body lower cavity; the baking cavity exhaust port 6 and the lower cavity exhaust port 7 are positioned on the same side wall of the box body 1, and the baking cavity exhaust port 6 and the lower cavity exhaust port 7 are connected with an exhaust gas recovery pipe through an exhaust pipe 35, and the exhaust gas recovery pipe is communicated with an exhaust gas recovery device. And a gas condensing and recycling device adopted by the waste gas recycling device.

Sealing strips 8 are embedded on sealing surfaces of the oven top cover 3 and the oven door 9. As shown in fig. 7, the sealing strip 8 comprises a strip-shaped sealing strip body 22, a sealing socket 24 is arranged in the middle of the cross section of the sealing strip body 22 along the length direction, lip-shaped sealing lips 23 are symmetrically arranged on two sides of the sealing socket 24, and the sealing lips 23 are arranged along the length direction of the sealing strip body 22. When the top cover 3 and the oven door 9 are closed, the sealing lip 23 is closely attached to the corresponding sealing surface, and the wall plate sealing strip 21 on the oven body 1 is inserted into the sealing insertion opening 24 to form a further sealing structure.

An oven window 38 is arranged on one side wall of the oven body 1, the oven window 38 is an access passage for a glass substrate, and an oven door 9 is movably arranged on the corresponding oven wall of the oven window 38 in an opening and closing manner. As shown in fig. 9, the oven door 9 is fixedly mounted on an opening and closing pendulum shaft 33 through an opening and closing connection block 34, the opening and closing pendulum shaft 33 is movably supported on the wall of the oven body 1 through pendulum shaft supports 32 at two ends, an opening and closing motor 31 is further mounted on the wall of the oven body 1, and the opening and closing motor 31 is connected with the opening and closing pendulum shaft 33 through a corresponding coupling.

As shown in fig. 10, the substrate lifting device fixedly installed at the lower side of the in-box bracket 4 comprises a lifting motor 18 and a lifting rotating shaft 15, wherein a motor output shaft of the lifting motor 18 is connected with the lifting rotating shaft 15 through a corresponding coupling, so that the lifting motor 18 drives the lifting rotating shaft 15. The jacking motor 18 is mounted on the in-box bracket 4 through a jacking support 17, and the jacking rotating shaft 15 is also rotatably supported on the in-box bracket 4 through another jacking support 17.

As shown in fig. 11, the top end of the rod body of the lifting rod 5 is movably sleeved with a lifting spring 39, the upper end of the lifting spring 39 is higher than the top end of the lifting rod 5, the lifting rod 5 is used for lifting or supporting the glass substrate through the lifting spring 39 in operation, the lifting spring 39 is a cylindrical spiral spring, and the lower end of the lifting spring 39 is fixedly supported on the lifting rod 5 through a spring seat 40 on the lifting rod 5.

As shown in fig. 12, the jacking bracket 10 formed by overlapping aluminum alloy sections is arranged in the baking lower cavity in a vertically reciprocating manner, a plurality of jacking rods 5 are vertically and fixedly arranged on the jacking bracket 10 through jacking connecting seats 16, each jacking rod 5 corresponds to a jacking rod hole of the baking partition plate 2, and therefore the jacking rods 5 can penetrate through the jacking rod holes from below to extend into the baking lower cavity.

As shown in fig. 13 and 14, two lifting swing arms 13 are provided on the lifting shaft 15, one ends of the lifting swing arms 13 are fixedly connected to the lifting shaft 15, the other ends of the lifting swing arms 13 are fixedly connected to lifting slide pins 37, the central lines of the lifting slide pins 37 and the lifting shaft 15 are parallel to each other, the lifting slide pins 37 are slidably supported in slide pin grooves 41 of the lifting chute base 12, and the slide pin grooves 41 are long grooves. The jacking chute seat 12 is fixedly connected to the jacking bracket 10. When the jacking motor 18 drives the jacking rotating shaft 15 and the jacking sliding pin 37 on the jacking rotating shaft to move in the sliding pin groove 41 of the jacking sliding chute seat 12, the jacking sliding pin 37 drives the jacking bracket 10 to reciprocate up and down through the jacking sliding chute seat 12, and the jacking rod 5 on the jacking bracket moves up and down along with the jacking bracket 10 to perform jacking motion on the glass substrate through the baking partition plate 2.

Claims

1. The utility model provides a liquid crystal display base plate contact type toasts case, includes box (1), its characterized in that: the box body (1) is of a rectangular frame structure, a box top cover (3) is movably arranged at the top of the box body (1), a baking partition plate (2) and an in-box support (4) are fixedly arranged in the box body (1), the baking partition plate (2), the box body (1) and the box top cover (3) enclose a baking cavity, a box bottom support (11) is fixedly arranged at the lower opening end of the box body (1), the box bottom cavity is positioned between the baking partition plate (2) and the box bottom support (11), and the in-box support (4) is positioned in the box bottom cavity; an oven window (38) is arranged on one side wall of the oven body (1), and an oven door (9) is movably arranged on the oven wall corresponding to the oven window (38); sealing strips (8) are embedded on the oven top cover (3) and the oven door (9); a substrate jacking device is arranged on the lower side of the in-box support (4), the substrate jacking device comprises a jacking motor (18) and a jacking rotating shaft (15), the jacking rotating shaft (15) is in transmission connection with the jacking motor (18), a jacking swing arm (13) is fixedly arranged on the jacking rotating shaft (15), a jacking sliding pin (37) is fixedly arranged at the overhanging end of the jacking swing arm (13), the jacking sliding pin (37) is slidably arranged in a jacking sliding groove seat (12), the jacking sliding groove seat (12) is fixedly connected to a jacking rod support (10), a jacking rod (5) is vertically arranged on the jacking rod support (10), and the jacking rod (5) penetrates through a corresponding hole in the baking partition plate (2) to extend to the baking cavity; the box body (1) comprises a box body wall plate (20), a heating plate (27) and a heating and heat-insulating layer (26) are embedded on the box body wall plate (20), the heating plate (27) is a ceramic heating plate, and the heating and heat-insulating layer (26) is formed by heat-insulating plates; the side wall of the box body (1) is respectively arranged at a baking cavity air outlet (6) and a lower cavity air outlet (7), the baking cavity air outlet (6) is positioned in the baking cavity, and the lower cavity air outlet (7) is positioned in the lower cavity of the box body; the sealing strip (8) comprises a sealing rubber strip body (22), a sealing socket (24) is arranged on the sealing rubber strip body (22), and sealing lips (23) are symmetrically arranged on two sides of the sealing socket (24); when the oven top cover (3) and/or the oven door (9) are/is closed, the wallboard sealing cutting (21) on the oven body (1) is inserted into the sealing inserting opening (24).

2. The lcd substrate contact oven of claim 1, wherein: the periphery of the baking partition plate (2) is connected with the inner wall of the box body (1) in a sealing way, the baking partition plate (2) comprises a heating plate (27), the heating plate (27) is clamped between an upper guard plate (29) and a lower guard plate (30), the heating plate (27) is a ceramic heating plate, and a plurality of jacking rod holes are formed in the baking plate (2).

3. The lcd substrate contact oven of claim 1, wherein: the box top cover (3) comprises a top cover wall plate (25), a heating plate (27) and a heating and heat-insulating layer (26) are embedded on the top cover wall plate (25), the heating plate (27) is a ceramic heating plate, and the heating and heat-insulating layer (26) is formed by heat-insulating plates; a cover edge of the box top cover (3) is hinged to the box body (1), and a cover stay bar (19) is supported between the box top cover (3) and the box body (1).

4. The lcd substrate contact oven of claim 1, wherein: the baking oven door (9) comprises an oven door wall plate (28), a heating plate (27) and a heating and heat-insulating layer (26) are embedded on the oven door wall plate (28), the heating plate (27) is a ceramic heating plate, and the heating and heat-insulating layer (26) is formed by heat-insulating plates; the oven door (9) is fixedly arranged on an opening and closing pendulum shaft (33) through an opening and closing connecting block (34), and the opening and closing pendulum shaft (33) is in transmission connection with an opening and closing motor (31).

5. The lcd substrate contact oven of claim 1, wherein: the box inner support (4) and the box bottom support (11) are of frame structures, a plurality of baking plate supports (14) are arranged on the box bottom support (11), and the baking partition plates (2) are supported at the upper ends of the baking plate supports (14).

6. The lcd substrate contact oven of claim 1, wherein: the lifting motor (18) is arranged on the in-box support (4) through the lifting support (17), the lifting rotating shaft (15) is rotatably supported on the in-box support (4), an output shaft of the lifting motor (18) is connected with the lifting shaft (15) through a coupling, at least two lifting swing arms (13) are arranged on the lifting rotating shaft (15), and each lifting swing arm (13) corresponds to one lifting chute seat (12).

7. The lcd substrate contact oven of claim 1, wherein: the jacking bracket (10) is a frame structure movably arranged in the baking lower cavity, and a plurality of jacking rods (5) are fixedly arranged on the jacking bracket (10) through jacking connecting seats (16).

8. The lcd substrate contact oven of claim 7, wherein: the top of jacking rod (5) is provided with jacking spring (39), and the top position of jacking spring (39) is higher than the top of jacking rod (5), and jacking spring (39) rigidity that jacking rod (5) that is located the periphery side is greater than the rigidity of jacking spring (39) that jacking rod (5) on the inner periphery side.