CN115947531A

CN115947531A - External pressing forming die for automobile toughened glass furnace

Info

Publication number: CN115947531A
Application number: CN202310111025.8A
Authority: CN
Inventors: 李圣根; 王海彬; 杨尚杰
Original assignee: Xinyi Auto Parts Wuhu Co ltd
Current assignee: Xinyi Auto Parts Wuhu Co ltd
Priority date: 2023-02-01
Filing date: 2023-02-01
Publication date: 2023-04-11

Abstract

The invention relates to the field of automobile glass production, and discloses an automobile toughened glass furnace external pressing forming die which is characterized by comprising a male die, an annealing ring and a female die, wherein the female die is arranged below the annealing ring, and the male die capable of lifting along the vertical direction is arranged above the annealing ring; placing the automobile toughened glass on the annealing ring; a lower pressing boss is arranged on the male die, and the lower end face of the lower pressing boss is provided with a forming curved surface with the same curvature as the upper surface of the automobile toughened glass to be formed; and the female die is provided with a forming ring which can be matched with the forming curved surface, and the forming ring is matched with the forming curved surface to shape the automobile toughened glass. The external pressing forming die for the automobile toughened glass furnace has the advantages of simple structure, low manufacturing cost and high production efficiency.

Description

External pressing forming die for automobile toughened glass furnace

Technical Field

The invention relates to the field of automobile glass production, in particular to an external pressing forming die for automobile toughened glass.

Background

Tempered glass/Reinforced glass belongs to safety glass. The tempered glass is actually prestressed glass, and in order to improve the strength of the glass, a chemical or physical method is usually used to form compressive stress on the surface of the glass, and the glass can firstly counteract the surface stress when bearing external force, so that the bearing capacity is improved, and the wind pressure resistance, the cold and hot property, the impact property and the like of the glass are enhanced.

The automobile glass is essential in automobile body accessories and mainly plays a role in protection. The automobile glass mainly comprises the following three types: laminated glass, toughened glass and regional toughened glass can bear stronger impact force. The automobile glass is divided into the following parts according to the positions: front windshield glass, side window glass, rear windshield glass and skylight glass; the national mandatory regulations of the front windshield glass are that the front windshield glass is laminated glass, the side window glass is toughened glass, and the rear windshield glass is generally toughened glass with electric heating wires.

The toughened glass is obtained by cutting glass into required sizes, heating to about 700 ℃ close to a softening point, and then rapidly and uniformly cooling. After tempering treatment, uniform compressive stress is formed on the surface of the glass, and tensile stress is formed inside the glass, so that the bending strength and the impact strength of the glass are improved, and the strength of the glass is about four times that of common annealed glass.

At present, a glass forming process in a furnace is commonly used in the industry, a mold is heated to the same temperature of glass in the furnace, and then the glass is pressed and formed, the mold used in the production process is complex in structure, 35 seconds are usually needed for producing one piece of glass, the production efficiency is low, and the complex structure of the mold causes long processing period and high cost of the mold.

Disclosure of Invention

In order to solve the problems of low production efficiency, long processing period and high cost of the press forming die in the automobile toughened glass furnace in the prior art, the invention provides the press forming die outside the automobile toughened glass furnace, which has the advantages of simple structure, low manufacturing cost and high production efficiency.

The invention provides an automobile toughened glass furnace external pressing forming die, which comprises a male die, an annealing ring and a female die, wherein,

the female die is arranged below the annealing ring, and the male die capable of lifting along the vertical direction is arranged above the annealing ring; the automobile toughened glass is placed on the annealing ring;

a lower pressing boss is arranged on the male die, and the lower end face of the lower pressing boss is provided with a forming curved surface with the same curvature as that of the upper surface of the automobile toughened glass to be formed; the female die is provided with a forming ring which can be matched with the forming curved surface, and the forming ring is matched with the forming curved surface to shape the automobile toughened glass.

Preferably, the female die is further provided with a positioning groove capable of positioning the female die.

Preferably, the male die is provided with an adjusting handle capable of adjusting the position of the male die according to the position of the female die.

Preferably, the male die further comprises a male die body, a connecting surface is arranged at the lower end of the male die body, and the downward pressing boss is detachably connected to the male die body through the connecting surface.

Preferably, the connection surface is evenly provided with a plurality of connection holes, and the downward pressing boss is detachably connected with the connection surface through a plurality of connection holes.

Preferably, the outer edge of the forming ring is aligned with the outer edge of the forming curved surface.

Preferably, a plurality of exhaust holes are uniformly formed in the forming curved surface.

Preferably, the female die can be lifted and lowered in a vertical direction.

Preferably, the height of the connecting surface is greater than that of the annealing ring after the male die is lowered into position.

Preferably, a plurality of heating rods for heating the forming curved surface are uniformly distributed on the forming curved surface.

According to the technical scheme, the automobile toughened glass is placed on the annealing ring, the male die descends, the forming curved surface abuts against the upper surface of the automobile toughened glass, the lower surface of the automobile toughened glass abuts against the forming ring of the female die in the process that the male die continues to press down, and under the pressure effect of pressing down of the male die, the automobile toughened glass external pressing forming die shapes the automobile toughened glass through the matching of the forming ring and the forming curved surface, so that the automobile toughened glass is bent into the curved surface which is the same as the forming curved surface. The external pressing forming die for the automobile toughened glass can realize the purpose of shaping the automobile toughened glass only by adopting a structure that a male die is matched with a female die, and has the characteristics of simple structure and high production efficiency, and 20 seconds are required for producing one piece of glass on average.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a press forming die outside an automobile tempered glass furnace according to a preferred embodiment;

FIG. 2 is a schematic illustration of a preferred embodiment male mold;

FIG. 3 is a left side view of a preferred embodiment male mold;

FIG. 4 is a top view of a preferred embodiment male mold;

FIG. 5 is a schematic view of a preferred embodiment annealing ring;

FIG. 6 is a schematic view of a preferred embodiment female mold;

FIG. 7 is a left side view of a preferred embodiment female mold;

FIG. 8 is a top view of a preferred embodiment female mold;

figure 9 is a front view of a preferred embodiment male mold.

Description of the reference numerals

1 terrace die 2 annealing ring

3 concave die 11 downward pressing boss

12-shaped curved surface 21 forming ring

15 connecting hole 13 adjusting handle

14 the punch body 16 positions the groove

17 exhaust hole 18 connecting surface

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are given by way of illustration and explanation only, not limitation.

In the present invention, unless otherwise specified, directional words such as "toward, away from, horizontal, oblique, front, rear, end" and the like included in a term merely represent the orientation of the term in a normal use state or a colloquial meaning understood by those skilled in the art, and should not be construed as limiting the term.

Referring to fig. 1-9, the external press-forming mold for automobile tempered glass comprises a male mold 1, an annealing ring 2 and a female mold 3, wherein,

the female die 3 is arranged below the annealing ring 2, and the male die 1 capable of lifting along the vertical direction is arranged above the annealing ring 2; the automobile toughened glass is placed on the annealing ring 2;

a lower pressing boss 11 is arranged on the male die 1, and the lower end surface of the lower pressing boss 11 is provided with a forming curved surface 12 with the same curvature as that of the upper surface of the automobile toughened glass to be formed; the female die 3 is provided with a forming ring 21 which can be matched with the forming curved surface 12, and the forming ring 21 is matched with the forming curved surface 12 to shape the automobile toughened glass.

The annealing ring 2 transports the automobile toughened glass from the furnace to the upper part of the female die 3, the male die 1 descends after the annealing ring 2 is in place, the pressing boss 11 at the lower part of the male die 1 firstly contacts the automobile toughened glass on the annealing ring 2, the pressing boss 11 starts to shape the automobile toughened glass in the descending process along with the continuous descending of the male die 1, the automobile toughened glass just discharged from the furnace is still in a high-temperature state and can deform along with the curvature shape of the forming curved surface 12 along with the descending of the pressing boss 11 until the edge of the automobile toughened glass contacts the forming ring 21 of the female die 3, the male die 1 stops descending, and the automobile toughened glass is kept at the position until the shaping operation of the automobile toughened glass is completed, namely the surface curvature of the automobile toughened glass is consistent with the curvature of the forming curved surface 12.

In a preferred embodiment, the upper end of the male die 1 is vertically connected with a plurality of cylinders, and the cylinders are arranged in parallel and act synchronously, so that the male die 1 can be driven to move vertically.

In this embodiment, it is preferable that the female die 3 is further provided with a positioning groove 16 capable of positioning the female die 3.

The positioning groove 16 of the female die 3 is fixedly provided with a positioning rod matched with the positioning groove 16, the position of the female die 3 can be limited by the positioning rod, so that the female die 3 and the annealing ring 2 are in a relative position fixing state, the female die 3 is located at the central position of the automobile toughened glass after the annealing ring 2 moves in place, and the male die 1 can reshape the automobile toughened glass in the descending process when being located at the correct relative position.

In this embodiment, the punch 1 is preferably provided with an adjustment handle 13 that can adjust the position of the punch 1 according to the position of the die 3.

Under the action of the positioning groove 16, the female die 3 and the annealing ring 2 are in a fixed relative position state, in order to ensure the shaping effectiveness of the automobile tempered glass, the relative positions of the female die 3, the annealing ring 2 and the male die 1 need to be kept consistent, then the male die 1 also needs to be installed at a correct position, and the position of the male die 1 needs to be determined according to the fixed position of the female die 3, so that the male die 1 is provided with an adjusting handle 13, the position of the male die 1 can be conveniently adjusted when the male die 1 is installed, and the male die 1 can be located at a correct position relative to the female die 3.

In this embodiment, preferably, the punch 1 further includes a punch body 14, a lower end of the punch body 14 is provided with a connecting surface 18, and the depressing boss 11 is detachably connected to the punch body 14 through the connecting surface 18.

The downward pressing boss 11 is detachably connected with the male die body 14, so that the downward pressing boss 11 is of a structure easy to detach, the forming curved surface (12) of different downward pressing bosses 11 is set to be applicable to automobile toughened glass with different surface curvatures, and the shaping operation of the automobile toughened glass with different curvature shapes can be realized by replacing different downward pressing bosses 11, so that the downward pressing boss 11 is set to be detachably connected with the male die body 14, and the universality of the male die 1 on different automobile toughened glass can be met.

In this embodiment, preferably, a plurality of connection holes 15 are uniformly distributed on the connection surface 18, and the pressing boss 11 is detachably connected to the connection surface 18 through the plurality of connection holes 15.

The pressing boss 11 is connected to the connecting surface 18 through the connecting hole 15, so that the connecting surface 18 needs to meet certain rigidity requirements, and the strength of the connecting surface 18 can be improved by quenching the connecting surface 18.

In this embodiment, it is preferable that the outer edge of the forming ring 21 is aligned with the outer edge of the forming curved surface 12.

In the process that the male die 1 is pressed downwards, the surface of the automobile toughened glass can deform along with the surface of the forming curved surface 12, and meanwhile, because the surface deforms, the automobile toughened glass is separated from the annealing ring 2 and enters the supporting range of the female die 3 until the edge of the automobile toughened glass is contacted with the forming ring 21.

In this embodiment, it is preferable that the curved forming surface 12 is uniformly provided with a plurality of air vent holes 17.

In the process of descending the curved forming surface 12, the gap between the curved forming surface 12 and the toughened glass of the automobile is reduced, and the air filled in the gap is continuously required to be discharged outwards along with the reduction of the gap, and the air required to be discharged can generate upward pressure on the curved forming surface 12. The vent holes 17 arranged on the forming curved surface 12 can reduce the resistance of the forming curved surface 12 in the descending process.

In this embodiment, it is preferable that the die 3 can be lifted and lowered in the vertical direction.

The die 3 can realize the release to the car toughened glass after the shaping along vertical direction lift, and at the in-process that the die 3 descends, car toughened glass can descend along with the die 3 and fall on the roller that is located the die 3 below, and after the die 3 descends to target in place, its position can not exceed the peak of roller to car toughened glass can be carried out when the roller rotates.

The locating lever can not exceed the highest point of the roller, and the interference between the locating lever and the automobile toughened glass when the roller rotates is avoided.

In order to avoid interference with the annealing ring 2 during the lowering of the punch 1, in this embodiment, the height of the connecting surface 18 is preferably greater than the height of the annealing ring 2 after the punch 1 is lowered into position.

In this embodiment, preferably, a plurality of heating rods for heating the curved forming surface 12 are distributed on the curved forming surface 12.

The forming curved surface 12 is heated by the heating rod, so that the temperature of the forming curved surface 12 is always kept consistent with the temperature of the automobile toughened glass on the annealing ring 2, and the uneven surface cooling of the automobile toughened glass caused by the temperature difference between the forming curved surface 12 and the automobile toughened glass is avoided.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. The external pressing forming die for the automobile toughened glass furnace is characterized by comprising a male die (1), an annealing ring (2) and a female die (3), wherein,

the female die (3) is arranged below the annealing ring (2), and the male die (1) capable of lifting along the vertical direction is arranged above the annealing ring (2); the automobile toughened glass is placed on the annealing ring (2);

a lower pressing boss (11) is arranged on the male die (1), and the lower end face of the lower pressing boss (11) is provided with a forming curved surface (12) with the same curvature as that of the upper surface of the automobile toughened glass to be formed; be provided with on die (3) can with shaping curved surface (12) complex shaping ring (21), shaping ring (21) with shaping curved surface (12) cooperation carries out the plastic to car toughened glass.

2. The press forming die outside the furnace for the toughened glass of the automobile as claimed in claim 1, wherein the female die (3) is further provided with a positioning groove (16) capable of positioning the female die (3).

3. The external press forming die for the automobile toughened glass furnace according to claim 2, wherein an adjusting handle (13) capable of adjusting the position of the male die (1) according to the position of the female die (3) is arranged on the male die (1).

4. The external press forming die for the tempered glass of the automobile as recited in claim 1, wherein the punch (1) further comprises a punch body (14), the lower end of the punch body (14) is provided with a connecting surface (18), and the pressing boss (11) is detachably connected to the punch body (14) through the connecting surface (18).

5. The press forming die outside the furnace for the tempered glass of the automobile as claimed in claim 4, wherein a plurality of connecting holes (15) are uniformly distributed on the connecting surface (18), and the pressing boss (11) is detachably connected to the connecting surface (18) through the plurality of connecting holes (15).

6. The press forming die outside the furnace for tempered glass of an automobile as claimed in claim 2, wherein the outer edge of the forming ring (21) is aligned with the outer edge of the forming curved surface (12).

7. The press forming die outside the furnace for the toughened glass of the automobile as claimed in claim 1, wherein a plurality of exhaust holes (17) are uniformly arranged on the forming curved surface (12).

8. The press-forming die outside the furnace for automobile tempered glass as claimed in claim 2, wherein the female die (3) is capable of being lifted in a vertical direction.

9. The press forming die outside the automobile toughened glass furnace as claimed in claim 3, wherein the height of the connecting surface (18) is greater than the height of the annealing ring (2) after the male die (1) is lowered to the proper position.

10. The press forming die outside the automobile tempered glass furnace as claimed in claim 1, wherein a plurality of heating rods for heating the forming curved surface (12) are uniformly distributed on the forming curved surface (12).