CN217895438U - 3D glass forming equipment - Google Patents
3D glass forming equipment Download PDFInfo
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- CN217895438U CN217895438U CN202221502987.3U CN202221502987U CN217895438U CN 217895438 U CN217895438 U CN 217895438U CN 202221502987 U CN202221502987 U CN 202221502987U CN 217895438 U CN217895438 U CN 217895438U
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- heating block
- pad
- upper heating
- glass forming
- mold
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Abstract
The present application relates to a 3D glass forming apparatus. The apparatus comprises: a lower heating block; a lower mold above the lower heating block; an upper mold above the lower mold; an upper heating block above the upper mold; a fixing device above the upper heating block; and a pad between the upper mold and the upper heating block; wherein the pad is disposed at the bottom of the upper heating block. The 3D glass forming equipment has good heat transmission efficiency, and the pad in the equipment is detachable and adjustable in size, so that the equipment manufacturing cost is saved, and the equipment can be widely applied to manufacturing of handheld and information terminal devices.
Description
Technical Field
The application belongs to the technical field of glass forming, relates to 3D glass forming equipment, and particularly relates to 3D glass forming equipment with a special pad design.
Background
Cover glasses have been widely used in various consumer electronic devices, such as cell phones, smart watches, vehicles, and the like. In this field, 3D glass would be an attractive product. The 3D glass forming process mainly comprises the following steps: shaping, polishing and ion exchange, wherein the shaping process is the most important step in building the master 3D shape, which comprises: hot pressing and then polishing to remove the imprint on the glass surface.
The forming process on small-sized (or hand-held sized) glass is a well established technology, but IT is not suitable for Information Terminal (IT) sizes. Since the larger forming area is not easily controlled, it can result in non-uniform shapes across the glass.
Thus, there is a need in the art for uniform heat transfer from the heating block to the mold in which the glass is placed to make flat 3D glass.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the present application provides a 3D glass forming apparatus having good heat transfer efficiency by employing a special pad design.
The application provides a 3D glass forming apparatus, this equipment includes:
a lower heating block;
a lower mold above the lower heating block;
an upper mold above the lower mold;
an upper heating block above the upper mold;
a fixing device above the upper heating block; and
a pad between the upper mold and the upper heating block;
wherein the pad is disposed at the bottom of the upper heating block.
In a preferred embodiment, the pad is detachably provided at the bottom of the upper heating block.
In another preferred embodiment, the pad is adjustable in size.
In another preferred embodiment, the pad is detachably disposed at the bottom of the upper heating block by a coupling mechanism.
In another preferred embodiment, the connection mechanism comprises a screw.
In another preferred embodiment, the pad is disposed on a portion of the bottom of the upper heating block.
In another preferred embodiment, the pad is disposed on one or both sides of the bottom of the upper heating block along the length of the bottom of the upper heating block.
In another preferred embodiment, the pad is disposed on one or both sides of the bottom of the upper heating block along the width of the bottom of the upper heating block.
In another preferred embodiment, the pad is disposed on the entire bottom of the upper heating block.
In another preferred embodiment, a washer is provided between the pad and the screw.
Compared with the prior art, the beneficial effect of this application includes:
(1) The size of the pad is adjustable and can be applied to 3D glass products of various sizes.
(2) The special pad design of this application can increase the area of contact between heating block and the mould to obtain better heat transfer, thereby make the mould reach the target temperature sooner, and realize more even heat distribution on glass, therefore can practice thrift preheating process's cycle time.
(3) The pad is removable to facilitate repair (only a few hours for repair, whereas prior art integrally designed pads require at least 3-5 days for repair) and replacement (to about $ 200, whereas prior art integrally designed pads are replaced to at least about $ 1000), without the need for specially designed pad structures on the mold, and without the concern that pad breakage will affect the mold life, thereby saving costs.
(4) The pad is removable so that the pressure applied to the mold can be easily fine-tuned.
(5) The above-described pad design can be applied not only to 3D glass manufacturing, but also to the manufacture of handheld and information terminal devices.
These and other features and advantages will become apparent upon reading the following detailed description and upon reference to the accompanying drawings. It is to be understood that both the foregoing general description and the following detailed description are explanatory only and are not restrictive of aspects as claimed.
Drawings
FIG. 1 shows a prior art 3D glass forming apparatus.
Fig. 2 is a top view of the upper mold of fig. 1.
FIG. 3 illustrates a 3D glass forming apparatus according to one embodiment of the present application.
Fig. 4 is a partially exploded view of fig. 3.
FIG. 5 illustrates a 3D glass forming apparatus according to another embodiment of the present application.
Fig. 6 is a partially exploded view of fig. 5.
FIG. 7 shows a comparison of contact areas between the upper heating block and the upper mold of the 3D glass forming apparatus of the present application and the prior art 3D glass forming apparatus.
FIG. 8 shows a comparison of temperature changes of the upper heating block of the 3D glass forming apparatus of the present application and the 3D glass forming apparatus of the prior art.
Description of reference numerals:
1-1: a lower heating block;
1-2: an upper heating block;
2-1: a lower die;
2-2: an upper die;
3: a fixing device;
4: a pad;
5: and a connecting mechanism.
Detailed Description
The present application is described in detail below with reference to the attached drawing figures, and features of the present application will become further apparent in the following detailed description.
As disclosed herein, a "range" is defined in terms of lower and upper limits, with a given range being defined by the selection of one lower limit and one upper limit that define the boundaries of the particular range. Ranges defined in this manner may or may not include endpoints and may be arbitrarily combined, i.e., any lower limit may be combined with any upper limit to form a range. For example, if ranges of 60-120 and 80-110 are listed for a particular parameter, it is understood that ranges of 60-110 and 80-120 are also contemplated. Further, if the minimum range values of 1 and 2 are listed, and if the maximum range values of 3,4 and 5 are listed, the following ranges are all contemplated: 1-3, 1-4, 1-5, 2-3, 2-4 and 2-5. In this application, unless otherwise stated, the numerical range "a-b" represents a shorthand representation of any combination of real numbers between a and b, where a and b are both real numbers. For example, a numerical range of "0 to 5" indicates that all real numbers between "0 to 5" have been listed herein, and "0 to 5" is only a shorthand representation of the combination of these numbers. In addition, when a parameter is an integer of 2 or more, it is equivalent to disclose that the parameter is, for example, an integer of 2, 3,4, 5, 6, 7, 8, 9, 10, 11, 12, or the like.
In the present application, all embodiments and preferred embodiments mentioned herein may be combined with each other to form new solutions, if not specifically stated. In the present application, all the technical features mentioned herein as well as preferred features may be combined with each other to form new technical solutions, if not specifically stated.
In the present application, the terms "include" and "comprise" as used herein mean open or closed unless otherwise specified. For example, the terms "comprising" and "comprises" may mean that other components not listed may also be included or included, or that only listed components may be included or included.
In the description herein, the term "or" is inclusive, unless otherwise specified. For example, the phrase "a or B" means "a, B, or both a and B. More specifically, either of the following conditions satisfies the condition "a or B": a is true (or present) and B is false (or not present); a is false (or not present) and B is true (or present); or both a and B are true (or present).
In response to the need in the art for uniform heat transfer from a heating block to a mold in which the glass is placed to make flat 3D glass, the present application provides a 3D glass forming apparatus with good heat transfer efficiency by employing a special pad design.
The 3D glass forming equipment has good heat transmission efficiency, and the pad in the equipment is detachable and adjustable in size, so that the equipment manufacturing cost is saved, and the equipment can be widely applied to manufacturing of handheld and information terminal devices.
3D glass forming process
The 3D glass forming process mainly comprises the following 3 steps: preheating, forming and annealing. The method specifically comprises the following steps:
(a) Heating a glass-based substrate placed in a mold having a mold surface with a 3D surface profile to a forming temperature in a preheating step;
(b) In the forming step, pressing the glass-based base material into a curved shape; and
(c) In the annealing step, the glass-based substrate is sent to an annealing station for slow cooling.
3D glass forming equipment
FIG. 1 shows a prior art 3D glass forming apparatus comprising: a lower heating block 1-1; a lower mold 2-1 above the lower heating block; an upper mold 2-2 above the lower mold; an upper heating block 1-2 above the upper mold; a fixing device 3 above the upper heating block; and a pad 4 between the upper mold and the upper heating block, wherein the upper mold and the lower mold are used for placing the glass-based substrate; the lower heating block and the upper heating block are used for heating the glass-based substrate to a forming temperature; the fixing device is used for fixing the upper heating block; the pad is designed to be fixed on the surface of the upper mold (integrated design), the material of the pad is the same as that of the upper mold (e.g., graphite), and the size of the pad depends on the size of the 3D glass manufacturing.
During the forming process, the upper heating block presses against the upper mold and transfers heat to the upper mold and the glass. The function of the pad is to transmit pressure to a specific glass area to form the desired 3D shape. Typically, the size and position of the pad 4 can be pre-adjusted as required by the glass manufacturing design, as shown in FIG. 2.
As the size of the 3D glass increases, uniform heat transfer becomes more critical, which means that a larger contact area is required between the upper heating block and the upper mold. However, since the upper die is of a unitary design with the pads on its surface, changing the pads on the upper die requires replacement of the entire upper die, which is expensive and time consuming.
The present application overcomes the above-described deficiencies of the prior art by changing the position of the pad from above the upper mold surface to the bottom of the upper heating block.
FIG. 3 illustrates a 3D glass forming apparatus according to one embodiment of the present application, comprising: a lower heating block 1-1; a lower mold 2-1 above the lower heating block; an upper mold 2-2 above the lower mold; an upper heating block 1-2 above the upper mold; a fixing device 3 above the upper heating block; and a pad 4 between the upper mold and the upper heating block, wherein the pad is disposed at the bottom of the upper heating block; the pad is detachably disposed at the bottom of the upper heating block through a coupling mechanism 5, and is disposed on one side of the bottom of the upper heating block along the length of the bottom of the upper heating block. Fig. 4 is a partially exploded view of fig. 3.
FIG. 5 illustrates a 3D glass forming apparatus according to one embodiment of the present application, comprising: a lower heating block 1-1; a lower mold 2-1 above the lower heating block; an upper mold 2-2 above the lower mold; an upper heating block 1-2 above the upper mold; a fixing device 3 above the upper heating block; and a pad 4 between the upper mold and the upper heating block, wherein the pad is disposed at the bottom of the upper heating block; the pad is detachably disposed at the bottom of the upper heating block by a connecting mechanism 5, and is disposed on both sides of the bottom of the upper heating block along the width of the bottom of the upper heating block. Fig. 6 is a partially exploded view of fig. 5.
In this application, the pad is detachably provided at the bottom of the upper heating block. In this context, "removable" means non-removable and is intended to be removed for repeated use.
In this application, the pad is dimensionally adjustable. In this context, "size adjustable" means that the size can be designed as desired.
In this application, the pad is detachably disposed at the bottom of the upper heating block by a coupling mechanism.
In the present application, the connection mechanism includes, but is not limited to: and (4) screws.
In this application, the pad is disposed on a portion of the bottom of the upper heating block.
In this application, the pad is disposed on one or both sides of the bottom of the upper heating block along the length of the bottom of the upper heating block.
In this application, the pad is disposed on one or both sides of the bottom of the upper heating block along the width of the bottom of the upper heating block.
In this application, the pad is disposed on the bottom of the entire upper heating block.
In the present application, a washer may be provided between the pad and the screw. For areas of the upper mold that do not have a pad in the center, the gasket may increase or decrease the distance between the upper heating block and the upper mold to ensure the function of convective heat transfer.
FIG. 7 shows a comparison of the contact area between the upper heating block 1-2 and the upper mold 2-2 of the 3D glass forming apparatus of the present application and the prior art 3D glass forming apparatus. As shown in fig. 7, the contact area (upper heating block 1-2 including pad 4) of the present application is larger than that of the prior art (upper mold 2-2 including pad 4), which means that the present application has a greater heat transfer efficiency.
In the preheating process, when the heating block contacts the mold, the temperature of the heating block becomes low initially because the mold is cooler than the heating block; the heating block will then gradually reach the target temperature due to thermal equilibrium. FIG. 8 shows a comparison of temperature changes of the upper heating block of the 3D glass forming apparatus of the present application and the 3D glass forming apparatus of the prior art. As shown in fig. 8, the upper heating block of the 3D glass forming apparatus of the present application reaches the target temperature faster than the prior art, which can save at least 20% of the cycle time of the pre-heat treatment.
During the forming and annealing process, the present application can perform heat transfer faster than the prior art, as shown in fig. 8. In addition, the 3D glass manufactured by the 3D glass forming device of the present application has no significant difference in dimensional data from the 3D glass manufactured by the prior art, which shows that the 3D glass manufactured by the 3D glass forming device of the present application has equivalent performance to the 3D glass manufactured by the prior art, but the cost of the present application is lower and the production line is more flexible.
The present application is not limited to the above embodiments. The above embodiments are merely examples, and embodiments having substantially the same configuration as the technical idea and exhibiting the same operation and effect within the technical scope of the present application are included in the technical scope of the present application. In addition, various modifications that can be conceived by those skilled in the art are applied to the embodiments and other embodiments are also included in the scope of the present application, in which some of the constituent elements in the embodiments are combined and constructed, without departing from the scope of the present application.
Claims (10)
1. A 3D glass forming apparatus, the apparatus comprising:
a lower heating block;
a lower mold above the lower heating block;
an upper mold above the lower mold;
an upper heating block above the upper mold;
a fixing device above the upper heating block; and
a pad between the upper mold and the upper heating block;
it is characterized in that the pad is arranged at the bottom of the upper heating block.
2. The 3D glass forming apparatus according to claim 1, wherein the pad is removably disposed at a bottom of the upper heating block.
3. The 3D glass forming apparatus of claim 1 or 2, wherein the pad is dimensionally adjustable.
4. The 3D glass forming apparatus according to claim 2, wherein the pad is removably disposed at a bottom of the upper heating block via an attachment mechanism.
5. The 3D glass forming apparatus according to claim 4, wherein the connection mechanism comprises a screw.
6. The 3D glass forming apparatus of claim 1, wherein the pad is disposed on a portion of a bottom of the upper heating block.
7. The 3D glass forming apparatus of claim 6, wherein the pad is disposed on one or both sides of the bottom of the upper heating block along the length of the bottom of the upper heating block.
8. The 3D glass forming apparatus of claim 6, wherein the pad is disposed on one or both sides of the bottom of the upper heating block along a width of the bottom of the upper heating block.
9. The 3D glass forming apparatus of claim 1, wherein the pad is disposed over a bottom of the upper heating block.
10. The 3D glass forming apparatus according to claim 5, wherein a washer is disposed between the pad and the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221502987.3U CN217895438U (en) | 2022-06-15 | 2022-06-15 | 3D glass forming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221502987.3U CN217895438U (en) | 2022-06-15 | 2022-06-15 | 3D glass forming equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217895438U true CN217895438U (en) | 2022-11-25 |
Family
ID=84130599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221502987.3U Active CN217895438U (en) | 2022-06-15 | 2022-06-15 | 3D glass forming equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217895438U (en) |
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2022
- 2022-06-15 CN CN202221502987.3U patent/CN217895438U/en active Active
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