CN111186989A

CN111186989A - Glass lens annealing furnace

Info

Publication number: CN111186989A
Application number: CN201811361468.8A
Authority: CN
Inventors: 胡耿政
Original assignee: Hubei Pairuisi Optical Glass Technology Co ltd
Current assignee: Hubei Pairuisi Optical Glass Technology Co ltd
Priority date: 2018-11-15
Filing date: 2018-11-15
Publication date: 2020-05-22

Abstract

A glass lens annealing furnace comprises a furnace body, wherein a mesh belt is arranged in the furnace body, and the mesh belt is arranged on a driving wheel and a driven wheel and is driven by a motor; a plurality of hot air branch pipes are arranged in the front end of the inlet in the furnace body, the top ends of the hot air branch pipes are connected with a heat exchanger through a main pipe, and the other end of the heat exchanger is connected with a centrifugal fan; the middle and the rear end of the furnace body are provided with isolation mechanisms at intervals, each isolation mechanism comprises paired partition plates arranged in the furnace body, ventilation holes are formed in the partition plates, the partition plates are inserted between the two partition plates, and the upper ends of the partition plates extend into the furnace body through an adjusting mechanism outside the furnace body. The glass lens annealing furnace provided by the invention can be used for graded annealing and improving the annealing efficiency.

Description

Glass lens annealing furnace

Technical Field

The invention relates to an annealing furnace, in particular to a glass lens annealing furnace.

Background

The glass lens needs to be placed into an annealing furnace for hot press molding after hot press molding, and slow annealing is needed because the initial temperature of the glass lens after hot press molding is 300-400 ℃. The temperature in the existing annealing furnace is constant, which is not beneficial to improving the annealing efficiency.

Disclosure of Invention

The invention aims to solve the technical problem of providing a glass lens annealing furnace which can carry out graded annealing and improve the annealing efficiency.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a glass lens annealing furnace comprises a furnace body, wherein a mesh belt is arranged in the furnace body, and the mesh belt is arranged on a driving wheel and a driven wheel and is driven by a motor; a plurality of hot air branch pipes are arranged in the front end of the inlet in the furnace body, the top ends of the hot air branch pipes are connected with a heat exchanger through a main pipe, and the other end of the heat exchanger is connected with a centrifugal fan; the middle and the rear end of the furnace body are provided with isolation mechanisms at intervals, each isolation mechanism comprises paired partition plates arranged in the furnace body, ventilation holes are formed in the partition plates, the partition plates are inserted between the two partition plates, and the upper ends of the partition plates extend into the furnace body through an adjusting mechanism outside the furnace body.

The adjusting mechanism comprises an operating rod connected with the baffle, the bottom end of the operating rod is in threaded connection with a clamping ring, the top end of the operating rod is provided with a limiting plate, and a spring is sleeved on the operating rod between the clamping ring and the limiting plate; the operating rod is limited through the clamping plate when being located at the lower limit position, and is limited through the U-shaped supporting plate hinged to the clamping plate when being located at the upper limit position.

The guipure passes through the straining device tensioning, and straining device includes with the action wheel, follow tangent switching-over deflector roll of driving wheel, the multiunit guide roll group that sets up in turn from top to bottom, and every guide roll group all includes second deflector roll, third deflector roll and fourth deflector roll, and wherein, the bearing frame slip setting of third deflector roll both sides is on the slide rail, and bearing frame upper end and lead screw rotatable coupling, the frame threaded connection of lead screw and furnace body one side.

The reversing guide roller and the guide roller set are both coated with rubber sleeves with patterns.

The reversing guide roller and the guide roller group comprise rotating shafts, and paired rubber tires are installed on the rotating shafts.

The invention relates to a glass lens annealing furnace, which has the following technical effects:

1) through setting up multiunit isolation mechanism to let in hot-blastly and carry out real-time observation through the thermometer at the furnace body front end, thereby make the temperature ladder change in the furnace body and satisfy glass lens's annealing requirement, both avoided glass lens's quench to break, can accelerate the cooling again, improve annealing efficiency.

2) The reversing guide roller is arranged and is approximately tangent to the driving wheel or the driven wheel, so that the upper part of the mesh belt can be horizontal, the lower part of the mesh belt can be loosened, and the noise or abrasion of the guide roller caused by the over-tight stretching of the whole mesh belt can be avoided; through setting up the guide roller group, can utilize the direction changing of the gravity of guipure self and deflector roll, further guarantee the level on guipure upper portion, can also suitably adjust the tensioning in addition, improve the flexibility.

3) The guide roller is sleeved with rubber or directly provided with the rubber tire, so that the device can completely process a mute state, and the working environment of workers is improved.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a simplified diagram of the present invention.

Fig. 2 is a partial sectional view at a in fig. 1.

Fig. 3 is a top view of a U-shaped support plate according to the present invention.

Fig. 4 is a schematic view showing the connection of the mesh belt of the present invention.

In the figure: furnace body 1, guipure 2, action wheel 3, follow driving wheel 4, motor 5, hot-blast branch pipe 6, house steward 7, heat exchanger 8, centrifugal fan 9, isolator 10, baffle 11, ventilative hole 12, baffle 13, action bars 14, snap ring 15, limiting plate 16, spring 17, cardboard 18, U type backup pad 19, switching-over deflector roll 20, guide roller group 21, second deflector roll 22, third deflector roll 23, fourth deflector roll 24, bearing frame 25, lead screw 26, frame 27, rubber tyre 28, slide rail 29.

Detailed Description

As shown in figures 1-4, the glass lens annealing furnace comprises a frame 27, a furnace body 1 is arranged on the frame 27, a mesh belt 2 is arranged in the furnace body 1, and the mesh belt 2 is arranged on a driving wheel 3 and a driven wheel 4 on the frame 27 in front and back. The driving wheel 3 is directly or indirectly driven by a motor. In order to realize the stepwise change of the temperature in the furnace body 1, a plurality of isolation mechanisms 10 may be provided in the furnace body 1. The isolation mechanism 10 comprises paired partition plates 11 arranged in the furnace body 1, certain space is arranged between the partition plates 11 at intervals for the baffle plates 13 to pass through, the paired partition plates 11 are respectively provided with ventilation holes 12, and the ventilation holes 12 are opened or closed when the baffle plates 13 move up and down, so that air circulation in the furnace body 1 is realized. In order to ensure the insulation performance, the gap between the lower end of the partition plate 11 and the mesh belt 2 is only required to ensure that the glass lens passes through smoothly.

In order to realize the adjustable lifting of the baffle 13, the baffle 13 can be connected with an operating rod 14. The bottom end of the operating rod 14 is in threaded connection with a clamping ring 15, the top end of the operating rod 14 is provided with a limiting plate 16, and a spring 17 is sleeved on the operating rod 14 and located between the clamping ring 15 and the limiting plate 16. In addition, a clamping plate 18 is arranged outside the furnace body 1, the clamping plate 18 is F-shaped, and the width of the upper horizontal plate is far smaller than that of the lower horizontal plate. The operating rod 14 can pass through a lower horizontal plate of the clamping plate 18, the operating rod 14 is tightly pushed under the action of a spring and a clamping ring in a general state, the operating rod 14 is located at a lower limit position, and the baffle plate 13 shields the ventilation hole 12. When the ventilation hole 12 needs to be opened, the limiting plate 16 is lifted upwards, the U-shaped supporting plate 19 is rotated clockwise, when the limiting plate 16 is located at the upper end of the hinged point of the U-shaped supporting plate 19, the U-shaped supporting plate 19 is rotated anticlockwise (the U-shaped supporting plate 19 is in a horizontal supporting state), the limiting plate 16 is loosened, and the limiting plate 16 is supported by the U-shaped supporting plate 19 (the diameter of the limiting plate 16 is larger than the width of the notch of the U-shaped supporting plate 19).

In addition, a plurality of hot air branch pipes 6 are arranged in the front end of an inlet in the furnace body 1, the top ends of the hot air branch pipes 6 are connected with a heat exchanger 8 through a header pipe 7, and the other end of the heat exchanger 8 is connected with a centrifugal fan 9. When the hot air supply device works, the centrifugal fan 9 is turned on, the centrifugal fan 9 blows air into the pipe, and after the hot air is heated by the heat exchanger 8, the obtained hot air can be blown out through the hot air branch pipe 6, so that the internal temperature is ensured to be reduced in a gradient manner. Avoid the glass lens from being cracked by quenching.

In addition, thermometers 30 are also installed in the furnace body 1 in a staggered manner, and the thermometers 30 are thermocouples. In the process that the mesh belt 2 moves forwards slowly, the glass lens passes below the hot air branch pipe 6, the heat exchanger 8 can be adjusted by observing the reading of the thermometer 30, and then the heating temperature is adjusted, so that the temperature difference between the environment and the glass lens is controlled within a reasonable range. When the temperature of the glass lens is reduced to a certain temperature, the mesh belt 2 drives the glass lens to enter a rear area for rapid cooling. In order to ensure a uniform temperature transition, the separating device 10 can be opened for ventilation, so that the internal temperature step is lowered and the annealing requirement is met.

Here, it is necessary to ensure that the upper portion of the mesh belt 2 is always in a horizontal state and runs smoothly, and therefore, the mesh belt 2 needs to be tensioned by a tensioning mechanism. The tensioning mechanism specifically comprises a reversing guide roller 20 tangent to the driving wheel 3 and the driven wheel 4, a bearing seat of the reversing guide roller 20 is arranged on the rack 27 in a sliding mode, the bearing seat is rotatably connected with a screw rod through a shaft sleeve, and the screw rod is in threaded connection with a supporting plate on the rack 27. The reversing guide roller 20 is adjusted by the screw rod mechanism to move back and forth and approach the mesh belt 2, so that the mesh belt 2 can be in a horizontal and micro-clamping state, the upper part of the mesh belt 2 is horizontal, and the operation is stable.

In addition, a plurality of guide roller sets 21 are further installed on the frame 27 through bearings and bearing seats, each guide roller set 21 comprises a second guide roller 22, a third guide roller 23 and a fourth guide roller 24, the second guide roller 22 and the fourth guide roller 24 are fixedly installed on the frame 27 through bearings and bearing seats, the bearing seats 25 on two sides of the third guide roller 23 are arranged on the sliding rails 29 in a sliding mode, the upper ends of the bearing seats 25 are rotatably connected with the screw rod 26, and the screw rod 26 is in threaded connection with the frame 27 on one side of the furnace body 1. When tensioning is needed, the screw rod 26 can be adjusted, and the screw rod 26 moves up and down relative to the frame 27 so as to drive the bearing block 25 to move up and down, thereby adjusting and tensioning the mesh belt 2.

Because the guipure 2 is the steel preparation, and conventional deflector roll also is the steel pipe, adopts to have great friction between steel deflector roll and the guipure 2, can have great noise, consequently can be wrapped up with the rubber sleeve of taking the decorative pattern outside the deflector roll, like this at guipure 2 drive deflector roll rotation in-process, the guipure 2 only contacts with the rubber sleeve, can guarantee the silence state like this.

Of course, the existing tires can be directly used, the rubber tires 28 are installed on the rotating shaft in pairs, and the rotating shaft is installed on the frame 27 through the bearing and the bearing seat. The structure can also realize the same function and ensure silence.

Or the guide roller can be installed by adopting the two combined modes.

Claims

1. A glass lens annealing furnace is characterized in that: the furnace comprises a furnace body (1), wherein a mesh belt (2) is arranged in the furnace body (1), and the mesh belt (2) is arranged on a driving wheel (3) and a driven wheel (4) and is driven by a motor (5); a plurality of hot air branch pipes (6) are arranged in the front end of an inlet in the furnace body (1), the top ends of the hot air branch pipes (6) are connected with a heat exchanger (8) through a header pipe (7), and the other end of the heat exchanger (8) is connected with a centrifugal fan (9); the furnace body (1) middle and rear end interval are equipped with isolation mechanism (10), and isolation mechanism (10) are including setting up spacing baffle (11) in pairs in furnace body (1), and it has ventilative hole (12) to open on baffle (11), and baffle (13) insert between two baffle (11) and the upper end stretches into through the adjustment mechanism outside furnace body (1).

2. A glass lens annealing furnace according to claim 1, characterized in that: the adjusting mechanism comprises an operating rod (14) connected with the baffle (13), the bottom end of the operating rod (14) is in threaded connection with a clamping ring (15), a limiting plate (16) is arranged at the top end of the operating rod (14), and a spring (17) is sleeved between the clamping ring (15) and the limiting plate (16) on the operating rod (14); when the operating rod (14) is positioned at the lower limit position, the operating rod is limited by the clamping plate (18), and when the operating rod (14) is positioned at the upper limit position, the operating rod is limited by the U-shaped supporting plate (19) hinged on the clamping plate (18).

3. A glass lens annealing furnace according to claim 1, characterized in that: guipure (2) are through the straining device tensioning, straining device include with action wheel (3), follow tangent switching-over deflector roll (20) in driving wheel (4), multiunit deflector roll group (21) that set up from top to bottom in turn, every group deflector roll group all includes second deflector roll (22), third deflector roll (23) and fourth deflector roll (24), wherein, bearing frame (25) of third deflector roll (23) both sides slide and set up on slide rail (29), and bearing frame (25) upper end and lead screw (26) rotatable coupling, lead screw (26) and frame (27) threaded connection of furnace body (1) one side.

4. A glass lens annealing furnace according to claim 3, characterized in that: the reversing guide rollers (20) and the guide roller group (21) are all coated with rubber sleeves with patterns.

5. A glass lens annealing furnace according to claim 3, characterized in that: the reversing guide roller (20) and the guide roller group (21) comprise rotating shafts, and paired rubber tires (28) are installed on the rotating shafts.