Production method for improving transparency through surface stretching of camera glass cover

Abstract

The invention discloses a production method for improving transparency by surface stretching of a camera glass cover, which is realized based on a surface stretching device and comprises the following steps: S1, positioning; s2, primary heating; s3, preliminary forming is conducted, specifically, the glass plate bearing base, the pressing plate and the preliminarily softened glass plate are integrally moved to the position above a lower mold base, and the lower mold base ascends under the action of an electric push rod; s4, secondary forming is conducted, specifically, the lower mold base is jacked to the limiting position, the hemispherical mold head is matched with an upper forming mold cavity of the upper mold base, the glass plate is subjected to stretching forming, and a hemispherical glass cover structure is formed; and S5, stripping is conducted, specifically, stripping is conducted after the hemispherical glass cover structure is cooled and shaped. Compared with the prior art, the problems that the surface stretching quality of an existing hemispherical glass cover is poor, and the transparency cannot meet the requirement are solved.

Description

Technical Field

[0001] The invention relates to the technical field of glass cover processing, and in particular to a production method for stretching the surface of a camera glass cover to improve transparency. Background Art

[0002] Cameras are widely used in video conferencing, telemedicine, and real-time monitoring. For example, Chinese patent CN209046752U discloses a hemispherical surveillance camera with a cleaning function, including a camera body and a support located above the camera body, the camera body including a wiping assembly, a camera assembly, and a glass cover for protecting the camera assembly, the glass cover is hemispherical, and is sleeved outside the camera assembly, and is seamlessly connected to the top cover of the camera body, a circle of slide rails is provided on the outer wall of the top cover, the wiping assembly is slidably connected to the slide rails on the outer wall of the top cover through a slider, the wiping assembly includes a plurality of connecting rod mechanisms and a brush head, the camera assembly and the wiping assembly are both powered by an energy supply mechanism and controlled by a controller, and the wiping assembly is driven by a driving mechanism.

[0003] The glass cover of the camera is a hemispherical glass structure, which is usually formed by stretching a glass plate. Therefore, the stretching quality of the glass plate affects the transparency of the glass cover, which in turn affects the image acquisition effect of the camera. The existing processing technology of the glass cover has poor stretching quality and the transparency cannot meet the requirements. Summary of the invention

[0004] The purpose of the present invention is to provide a production method for improving the transparency of a camera glass cover by stretching the surface, so as to solve the problem that the surface stretching quality of the existing hemispherical glass cover is poor and the transparency cannot meet the requirements.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a production method for improving the transparency of a camera glass cover by stretching the surface, which is realized based on a surface stretching device, and the surface stretching device comprises:

[0006] A glass plate support seat, which is used to place the glass plate, and the glass plate support seat is provided with through holes corresponding to the positions of the glass plates;

[0007] A pressing plate, which is used to press and position the glass plate on the glass plate supporting seat;

[0008] A lower die seat is provided with a plurality of lower forming dies, the positions of the lower forming dies correspond to the through holes, a hemispherical die head is provided on the top of the lower forming dies, a first heating element is provided in the lower forming dies, and an electric push rod is also provided under the lower die seat;

[0009] An upper die seat is provided with an upper forming die cavity corresponding to the position of the lower forming die;

[0010] The production method comprises the following steps:

[0011] S1. Positioning: positioning the glass plate on the glass plate support seat through the pressing plate;

[0012] S2. Initial heating: Place the glass plate on the glass plate support and heat it to 500-550 degrees to soften the glass plate initially;

[0013] S3, preliminary forming: the glass plate support seat, the pressure plate and the initially softened glass plate are moved as a whole to the top of the lower die seat, the lower die seat rises under the action of the electric push rod, the lower forming die passes through the through hole on the glass plate support seat, the hemispherical die head initially stretches and forms the glass plate, the hemispherical die head is heated to 500-600 degrees by the first heating element, the lifting speed of the lower die seat is V1, and the lifting distance of the lower die seat is D1;

[0014] S4, secondary molding: when the lifting distance of the lower mold base exceeds D1, the electric push rod pushes the lower mold base to continue to lift upward at the lifting speed V2, the lifting speed V2 is less than the lifting speed V1, and the lifting distance of the lower mold base is D2. At this time, the lower mold base is lifted to the limit position, the hemispherical die head cooperates with the upper molding cavity of the upper mold base, and the upper mold base is heated to 550-600 degrees by the second heating element, and the glass plate is stretched and formed to form a hemispherical glass cover structure;

[0015] S5. Material removal: The hemispherical glass cover structure is cooled and shaped, firstly it moves downward with the lower die seat to separate from the upper die seat, and then the hemispherical glass cover structure is removed from the lower die seat.

[0016] As a further description of the above technical solution:

[0017] A bottom edge forming ring is sleeved on the outer side of the lower forming die, and a lifting cylinder is also arranged on the lower forming die. The bottom edge forming ring is fixedly mounted on the piston rod of the lifting cylinder, and a step surface corresponding to the bottom edge forming ring is arranged on the upper forming die cavity.

[0018] As a further description of the above technical solution:

[0019] A driving cylinder is arranged on the back of the pressing plate.

[0020] As a further description of the above technical solution:

[0021] In step S3, before the glass plate is initially formed, talcum powder is coated on the surface of the lower forming mold and the surface of the upper forming mold cavity.

[0022] As a further description of the above technical solution:

[0023] One side of the upper die seat is connected to a rotating arm, and the rotating arm is fixedly installed on the output end of the rotating cylinder.

[0024] As a further description of the above technical solution:

[0025] A pressure sensor is arranged between the lower forming die and the lower die seat.

[0026] As a further description of the above technical solution:

[0027] The lower forming die is rotatably mounted on the lower die base, a driving gear is arranged on the lower die base, the driving gear is fixedly mounted on the output end of the rotating motor, and circumferentially arranged convex teeth are arranged on the outer side of the lower forming die, and the convex teeth are meshed with the driving gear.

[0028] As a further description of the above technical solution:

[0029] Three electric push rods are arranged below the lower die base, and three lower forming dies are also arranged on the lower die base. The electric push rods and the lower forming dies are arranged at intervals.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] 1. In the present invention, during the stretching and forming process of the glass cover, the glass plate on the glass plate support seat is lifted and formed by the lower forming die on the lower die seat, and the forming is divided into two stages. In the first stage, for thicker glass plates, the lower forming die lifts the initially softened glass plate at a faster speed; in the second stage, for the stretched and thinned glass plate, the lower forming die reduces the lifting speed and cooperates with the upper die seat to stretch and form the glass plate to form a hemispherical glass cover structure, effectively improving the stretching and forming quality of the glass plate.

[0032] 2. In the present invention, during the stretching process, the lower forming mold heats the lower side of the glass plate, and the upper mold base heats the upper side of the glass plate, which effectively ensures the fluidity of the glass and facilitates stretching and forming. The temperature of the lower forming mold is lower than that of the upper mold base, so that the part of the upper side of the glass plate with a larger stretching deformation has better fluidity, further improving the stretching and forming quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of the structure of a surface stretching device in a production method for stretching the surface of a camera glass cover to improve transparency Figure 1 .

[0035] Figure 2 A schematic diagram of the structure of a surface stretching device in a production method for stretching the surface of a camera glass cover to improve transparency Figure 2 .

[0036] Figure 3 The present invention is a cross-sectional view of a surface stretching device in a production method for improving transparency by stretching the surface of a camera glass cover.

[0037] Legend:

[0038] 1. Glass plate supporting seat; 11. Through hole; 2. Pressing plate; 21. Driving cylinder; 3. Lower die seat; 31. Lower forming die; 311. First heating element; 312. Convex teeth; 32. Hemispherical die head; 33. Electric push rod; 34. Bottom edge forming ring; 35. Lifting cylinder; 38. Rotating motor; 39. Driving gear; 4. Upper die seat; 41. Upper forming cavity; 411. Step surface; 42. Rotating arm; 43. Rotating cylinder; 9. Glass plate. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example 1

[0042] See also Figure 1-3 The present invention provides a technical solution: a production method for improving the transparency of a camera glass cover by stretching the surface, which is implemented based on a surface stretching device, and the surface stretching device includes:

[0043] A glass plate support seat 1 is used to place a glass plate 9, and a through hole 11 corresponding to the position of the glass plate 9 is provided on the glass plate support seat 1;

[0044] A pressing plate 2, which is used to press and position the glass plate 9 on the glass plate supporting seat 1;

[0045] A lower die base 3 is provided with a plurality of lower forming dies 31, the positions of the lower forming dies 31 correspond to the through holes 11, a hemispherical die head 32 is provided on the top of the lower forming dies 31, a first heating element 311 is provided inside the lower forming dies 31, and an electric push rod 33 is also provided below the lower die base 3;

[0046] An upper mold base 4 is provided with an upper molding cavity 41 corresponding to the position of the lower molding mold 31;

[0047] The production method comprises the following steps:

[0048] S1, positioning: positioning the glass plate 9 on the glass plate support seat 1 through the pressing plate 2;

[0049] S2, preliminary heating: placing the glass plate 9 on the glass plate support 1 to 500-550 degrees, so that the glass plate 9 is initially softened;

[0050] S3, preliminary forming: the glass plate support seat 1, the pressing plate 2 and the preliminary softened glass plate 9 are moved as a whole to the top of the lower die seat 3, the lower die seat 3 rises under the action of the electric push rod 33, the lower forming die 31 passes through the through hole 11 on the glass plate support seat 1, the hemispherical die head 32 performs preliminary stretching and forming on the glass plate 9, the hemispherical die head 32 is heated to 500-600 degrees by the first heating element 311, the lifting speed of the lower die seat 3 is V1, and the lifting distance of the lower die seat 3 is D1;

[0051] S4, secondary molding: when the lifting distance of the lower mold base 3 exceeds D1, the electric push rod 33 pushes the lower mold base 3 to continue to lift upward at the lifting speed V2, the lifting speed V2 is less than the lifting speed V1, and the lifting distance of the lower mold base 3 is D2. At this time, the lower mold base 3 is lifted to the limit position, the hemispherical die head 32 cooperates with the upper molding cavity 41 of the upper mold base 4, and the upper mold base 4 is heated to 550-600 degrees by the second heating element, and the glass plate 9 is stretched and formed to form a hemispherical glass cover structure;

[0052] S5, material removal: the hemispherical glass cover structure is cooled and shaped, firstly moves downward with the lower die base 3 to separate from the upper die base 4, and then the hemispherical glass cover structure is removed from the lower die base 3.

[0053] A driving cylinder 21 is arranged on the back of the pressing plate 2. The driving cylinder 21 is used to control the pressing plate 2 to press down to contact the glass plate supporting seat 1 or to separate from the glass plate supporting seat 1 upward.

[0054] In step S3 , before the glass plate 9 is initially formed, talcum powder is coated on the surface of the lower forming mold 31 and the surface of the upper forming mold cavity 41 to facilitate subsequent material removal.

[0055] Working principle: During the stretching process of the glass cover, the glass plate 9 on the glass plate support seat 1 is lifted and formed by the lower forming die 31 on the lower die seat 3, and the forming is divided into two stages. In the first stage, for thicker glass plates 9, the lower forming die 31 lifts the initially softened glass plate 9 at a faster speed; in the second stage, for the glass plate 9 that has been stretched and thinned, the lower forming die 31 reduces the lifting speed and cooperates with the upper die seat 4 to stretch and form the glass plate 9 to form a hemispherical glass cover structure, which effectively improves the stretching quality of the glass plate 9. During the stretching process, the lower forming die 31 heats the lower side of the glass plate 9, and the upper die seat 4 heats the upper side of the glass plate 9, which effectively ensures the fluidity of the glass and facilitates stretching. The temperature of the lower forming die 31 is lower than that of the upper die seat 4, so that the part of the upper side of the glass plate 9 with a larger stretching deformation has better fluidity, further improving the stretching quality.

[0056] In addition, a plurality of glass covers are formed on the glass plate supporting seat 1 at the same time, thereby improving the stretching quality and the production efficiency.

[0057] Example 2

[0058] Based on the above embodiments, this embodiment further makes the following improved technical solutions: a bottom edge forming ring 34 is sleeved on the outer side of the lower forming mold 31, and a lifting cylinder 35 is also provided on the lower forming mold 31. The bottom edge forming ring 34 is fixedly mounted on the piston rod of the lifting cylinder 35, and a step surface 411 corresponding to the position of the bottom edge forming ring 34 is provided on the upper forming mold cavity 41.

[0059] The bottom edge forming ring 34 can be pushed upward under the action of the lifting cylinder 35 after the lower forming mold 31 cooperates with the upper mold seat 4 during the secondary molding process, and cooperates with the step surface 411 on the upper molding cavity 41 to form a circular ring-shaped bottom edge at the bottom of the hemispherical glass cover, which is convenient for subsequent cutting, so that the hemispherical glass cover is separated from the clamping part of the glass plate supporting seat 1 and the pressure plate 2. At the same time, the circular ring-shaped bottom edge facilitates the installation of the hemispherical glass cover when assembling the camera later.

[0060] Example 3

[0061] This embodiment further provides the following improved technical solutions based on the above embodiment: one side of the upper die base 4 is connected to a rotating arm 42, which is fixedly mounted on the output end of a rotating cylinder 43. The rotating cylinder 43 can rotate the upper die base 4 180 degrees upwards to facilitate the application of talcum powder.

[0062] Example 4

[0063] This embodiment further provides the following improved technical solutions based on the above embodiments: a pressure sensor is provided between the lower molding die 31 and the lower die base 3. When the pressure of the lower molding die 31 monitored by the pressure sensor exceeds a set threshold during the stretching process, the upward movement is stopped and the stretching is terminated.

[0064] Example 5

[0065] This embodiment further provides the following improved technical solutions based on the above embodiments: the lower forming die 31 is rotatably mounted on the lower die base 3, a driving gear 39 is provided on the lower die base 3, the driving gear 39 is fixedly mounted on the output end of the rotating motor 38, and a circumferentially arranged convex teeth 312 are provided on the outer side of the lower forming die 31, and the convex teeth 312 are meshed with the driving gear 39. After the lower forming die 31 is matched with the upper die base 4, the lower forming die 31 can be slowly rotated under the drive of the rotating motor 38, so as to further improve the stretching quality.

[0066] Example 6

[0067] This embodiment further provides the following improved technical solutions based on the above embodiment: three electric push rods 33 are arranged below the lower die base 3, and three lower forming dies 31 are arranged on the lower die base 3, and the electric push rods 33 and the lower forming dies 31 are arranged at intervals, which effectively ensures that the lower die base 3 is lifted and lowered smoothly, and improves the stretching quality of the hemispherical glass cover.

[0068] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A production method for increasing the transparency of a camera glass cover by stretching the surface, characterized in that: It is realized based on a surface stretching device, and the surface stretching device comprises: A glass plate supporting seat, which is used to place the glass plate, and the glass plate supporting seat is provided with a through hole corresponding to the position of the glass plate; A pressing plate, used for pressing and positioning the glass plate on the glass plate supporting seat; A lower die base, on which a plurality of lower forming dies are arranged, the positions of the lower forming dies correspond to the through holes, a hemispherical die head is arranged on the top of the lower forming dies, a first heating element is arranged inside the lower forming dies, and an electric push rod is also arranged below the lower die base; An upper die base, on which an upper molding die cavity corresponding to the position of the lower molding die is arranged; The production method comprises the following steps: S1. Positioning: positioning the glass plate on the glass plate support seat through the pressing plate; S2. Initial heating: Place the glass plate on the glass plate support and heat it to 500-550 degrees to soften the glass plate initially; S3, preliminary forming: the glass plate support seat, the pressure plate and the initially softened glass plate are moved as a whole to the top of the lower die seat, the lower die seat rises under the action of the electric push rod, the lower forming die passes through the through hole on the glass plate support seat, the hemispherical die head initially stretches and forms the glass plate, the hemispherical die head is heated to 500-600 degrees by the first heating element, the lifting speed of the lower die seat is V1, and the lifting distance of the lower die seat is D1; S4, secondary molding: when the lifting distance of the lower mold base exceeds D1, the electric push rod pushes the lower mold base to continue to lift upward at the lifting speed V2, the lifting speed V2 is less than the lifting speed V1, and the lifting distance of the lower mold base is D2. At this time, the lower mold base is lifted to the limit position, the hemispherical die head cooperates with the upper molding cavity of the upper mold base, and the upper mold base is heated to 550-600 degrees by the second heating element, and the glass plate is stretched and formed to form a hemispherical glass cover structure; S5. Material removal: The hemispherical glass cover structure is cooled and shaped, firstly it moves downward with the lower die seat to separate from the upper die seat, and then the hemispherical glass cover structure is removed from the lower die seat.

2. The method for producing a camera glass cover by stretching the surface to improve transparency according to claim 1, characterized in that: A bottom edge forming ring is sleeved on the outer side of the lower forming die, and a lifting cylinder is also provided on the lower forming die. The bottom edge forming ring is fixedly mounted on the piston rod of the lifting cylinder, and a step surface corresponding to the position of the bottom edge forming ring is provided on the upper forming die cavity.

3. The method for producing a camera glass cover by stretching the surface to improve transparency according to claim 1, characterized in that: A driving cylinder is arranged on the back side of the pressing plate.

4. The method for producing a camera glass cover by stretching the surface to improve transparency according to claim 1, characterized in that: In step S3, before the glass plate is initially formed, talcum powder is coated on the surface of the lower forming mold and the surface of the upper forming mold cavity.

5. The method for producing a camera glass cover by stretching the surface to improve transparency according to claim 4, characterized in that: One side of the upper die seat is connected to a rotating arm, and the rotating arm is fixedly mounted on the output end of the rotating cylinder.

6. The method for producing a camera glass cover by stretching the surface to improve transparency according to claim 1, characterized in that: A pressure sensor is arranged between the lower forming die and the lower die base.

7. The method for producing a camera glass cover by stretching the surface to improve transparency according to claim 1, characterized in that: The lower forming die is rotatably mounted on the lower die base, a driving gear is arranged on the lower die base, the driving gear is fixedly mounted on the output end of the rotating motor, and circumferentially arranged convex teeth are arranged on the outer side of the lower forming die, and the convex teeth are meshed with the driving gear.

8. The method for producing a camera glass cover by stretching the surface to improve transparency according to claim 1, characterized in that: Three electric push rods are arranged below the lower die base, and three lower forming dies are also arranged on the lower die base. The electric push rods and the lower forming dies are arranged at intervals.

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