A molding device

Abstract

The utility model relates to a kind of forming devices for realizing forming by exerting force to mould, the forming device includes: force generating device, for providing force;Force transmission assembly is connected with the force generating device, for transmitting the force provided by the force generating device;Contact component is connected with the force transmission assembly, for the force from the force transmission assembly is applied to the mould;The contact component includes: first contact component, for with the first part of the mould contact;Second contact component is used for with the second part of the mould contact, the first part with the second part is in different plane.The forming device provided by the utility model can provide pressure to plunger and other parts outside plunger simultaneously when forming, prevent the warping of mould, ensure the effect of forming.

Description

Technical Field

[0001] This utility model relates to the field of molding technology, specifically to a molding device. Background Technology

[0002] As smartphone camera capabilities become increasingly powerful, the size of camera modules used in phones is also growing, which contradicts the need to control the overall thickness of the phone. To better integrate the camera module into the phone, a "volcano" design has been adopted. This design uses a seamless transition structure to make the camera module blend more naturally with the back cover, while also enhancing the phone's three-dimensionality, texture, and brand recognition.

[0003] To achieve this design, processing methods such as 3D laser engraving, CNC milling, and etching have been developed. However, these methods suffer from low efficiency and high cost.

[0004] Furthermore, for the processing of mobile phone glass back covers or screens, it is known that a process of forming curved edges through hot bending is used. However, traditional hot bending processes are mostly used to form full-length back covers or screens and cannot be directly applied to the production of mobile phone back covers with crater-like shapes. Utility Model Content

[0005] Therefore, this utility model proposes a molding device that can use a hot bending process to mold a mobile phone back cover with a volcano-shaped crater. Specifically, this utility model proposes the following solution.

[0006] A molding apparatus for achieving molding by applying force to a mold, the molding apparatus comprising:

[0007] A force-generating device used to provide force;

[0008] A force transmission component, connected to the force generating device, is used to transmit the force provided by the force generating device;

[0009] A contact component, connected to the force transmission assembly, is used to apply a force from the force transmission assembly to the mold;

[0010] The contact component includes:

[0011] The first contact component is used to contact the first part of the mold;

[0012] The second contact component is used to contact the second part of the mold, wherein the first part and the second part are on different planes.

[0013] By dividing the contact component into two parts and having these two parts contact different planes of the mold, multiple pressure points can be applied during the application of pressure. This is particularly suitable for manufacturing mobile phone glass back covers with crater-like shapes. During thermoforming, a pressure head can be used to form the crater, but the height of the pressure head is greater than the height of other parts of the mold. The applicant found that if pressure is only applied to the pressure head, the other parts of the mold will warp, resulting in a product whose structure and performance do not meet requirements. The molding device provided by this invention can simultaneously apply pressure to the pressure head and other parts outside the pressure head during molding, preventing the mold from warping and ensuring the molding effect.

[0014] This invention also includes the following examples, and features in the following examples can be combined arbitrarily without conflict.

[0015] According to one example of the present invention, the force transmission assembly includes a rigid transmission member, the rigid transmission member comprising:

[0016] The first component mates with the first contacting component;

[0017] The second component mates with the second contact component.

[0018] According to one example of the present invention, the first component and the second component are coaxially arranged, the first component has a hollow structure, and the second component is disposed inside the first component.

[0019] By setting the force transmission component as two separate components, each cooperating with two contact parts, the force transmission component and the contact parts connected thereto can be controlled independently. This allows for control over the timing of force application and the magnitude of the applied force, enabling adaptive adjustment as needed.

[0020] According to an example of the present invention, the force transmission assembly further includes an elastic transmission member disposed between the first member and the force generating device, and capable of transmitting force from the force generating device to the first member; the second member is rigidly connected to the force generating device.

[0021] By additionally providing an elastic transmission member, the force on the first member can be applied gradually and with damping, which is particularly suitable for contact parts acting on the non-pressure head portion of the mold.

[0022] According to one example of the present invention, the elastic transmission member is a compression spring.

[0023] According to one example of the present invention, a cylindrical member is also included, the cylindrical member being mounted to a fixing member, and the first member passing through the cylindrical member.

[0024] According to one example of the present invention, the force generating device includes a motor and a push cylinder.

[0025] According to one example of the present invention, a sensor is provided between the force generating device and the force transmitting component.

[0026] By setting up sensors, the magnitude of the applied force can be known in real time, which can then be combined with the motor control to form a closed-loop feedback control of the applied force, thus contributing to the precise control of the molding process.

[0027] According to one example of the present invention, a cooling device is provided between the force generating device and the force transmitting component.

[0028] By installing a cooling device, the heat transfer from the mold to heat-sensitive components such as the push cylinder and motor can be effectively reduced, preventing these components from being damaged or having their performance reduced due to heat.

[0029] According to one example of the present invention, the first contact member is U-shaped, and the second contact member is disposed inside the U-shape; and / or

[0030] The second contact component is provided with a recess or a protrusion, and the first contact component is provided with a corresponding protrusion or a recess, for positioning and guiding between the two.

[0031] By designing the shape of the two contact components, it is easy to position and guide them. The first contact component can simultaneously apply pressure to the parts of the mold located on both sides of the pressure head, effectively preventing the mold from warping.

[0032] Other features and advantages of this utility model will be shown in the detailed description below in conjunction with the accompanying drawings. Attached Figure Description

[0033] The features and advantages of this utility model will become clear from the following detailed description provided with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and therefore should not be considered as limitations on this utility model, wherein:

[0034] Figure 1 A perspective view of the molding apparatus according to the present invention is shown.

[0035] Figure 2 An exploded view of the molding apparatus according to the present invention, broken down into two parts, is shown.

[0036] Figure 3 It shows Figure 2 The front view of the right side of the middle section.

[0037] Figure 4 It shows Figure 2 A cross-sectional view of the right side of the middle section.

[0038] Figure 5 An exploded view of a portion of the molding apparatus according to the present invention is shown.

[0039] Figure 6 The diagram shows the molding apparatus according to the present invention in different working processes. Detailed Implementation

[0040] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to enable those skilled in the art to more fully understand and implement the present invention. However, it will be apparent to those skilled in the art that implementations of the present invention may not include some of these specific details. Furthermore, it should be understood that the present invention is not limited to the specific embodiments described. Rather, the present invention can be conceived to be implemented with any combination of the features and elements described below, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments, and advantages are for illustrative purposes only and should not be construed as features or limitations of the claims unless expressly set forth in the claims.

[0041] The descriptions of orientation used in the following description, such as "upper," "lower," "inner," "outer," "radial," and "axial," are for convenience only and are not intended to limit the technical solution of the utility model, unless explicitly stated otherwise. Furthermore, the terms "first," "second," etc., used below to describe elements of this application are only used to distinguish individual elements and are not intended to limit the nature, sequence, order, or number of these elements.

[0042] Figure 1 A perspective view of a molding apparatus according to the present invention is shown. The molding apparatus according to the present invention is used to mold material disposed in a mold 10, particularly to form a mobile phone glass back cover with a crater-like shape. The mold 10 includes an upper mold and a lower mold, and a material such as glass is disposed between the upper and lower molds. After heating, the glass softens and is pressed between the upper and lower molds to form a predetermined shape. Furthermore, a pressure head is provided on the mold 10 to form the crater-like shape.

[0043] from Figure 1As can be seen, the molding device has a motor 1 and a pusher cylinder 2. Under the action of the motor 1, the pusher cylinder 2 can output reciprocating linear motion, thereby providing power for other components of the molding device. Of course, other structures can also be used, as long as they can output linear motion that meets the requirements.

[0044] Since the molding device of this utility model adopts a thermoforming process, the mold 10 needs to be set inside a cavity with a predetermined temperature, while the motor 1, push cylinder 2, etc., do not need to be set inside the cavity and cannot be set inside the cavity. For this reason, the motor 1 and push cylinder 2 are fixed to the frame or other fixed parts by the mounting component 3.

[0045] Preferably, a sensor 4 is installed after the push cylinder 2 to measure the force output by the push cylinder 2. Furthermore, the motor 1 can be a servo motor, thereby cooperating with the sensor 4 to form a closed-loop control based on the actual measured force. The sensor 4 can be, for example, a weighing instrument or other type of force sensor.

[0046] Sensor 4 is further connected to cooling device 5. Cooling device 5 can be a liquid cooling system. Figure 1 The inlet and outlet of the coolant are shown. By circulating the coolant in the cooling device 5, heat transfer from the high-temperature components within the cavity to the push cylinder 2 and the motor 1 can be avoided or reduced.

[0047] The molding apparatus also includes a force transmission assembly to transmit the force from the pusher cylinder 2 to the contact member 9, which directly contacts the mold 10 to provide pressure to the mold.

[0048] As mentioned above, in a preferred application scenario of this utility model, glass is used to form mobile phone back covers, especially those with a crater-like shape. Therefore, a pressure head protruding from the surface of the upper mold is provided to form the crater. The applicant has found that when applying pressure to the mold 10, if pressure is only applied to the pressure head, uneven force may cause the mold to warp, resulting in the final product shape not meeting requirements. Therefore, the molding device proposed in this utility model can solve the problem of mold warping. The molding device will be further described below with reference to other accompanying drawings.

[0049] Figure 2 An exploded view of the molding apparatus according to the present invention, broken down into two parts, is shown. Figure 3 It shows Figure 2 The front view of the right side of the middle section. Figure 4 It shows Figure 2 A cross-sectional view of the right side of the middle section. Figure 5 An exploded view of a portion of the molding apparatus according to the present invention is shown. Figure 2As shown, the left side contains motor 1 and push cylinder 2, with the lower end showing the rod-shaped output end of the push cylinder. This output end connects to the right side, specifically to sensor 4. Figure 3 and Figure 4 The right side then provides further details.

[0050] To address the issue that applying pressure only to the pressure head can cause the mold to warp, this invention divides the contact component 9 into a first contact component 91 and a second contact component 92. The first contact component 91 contacts the part of the mold other than the pressure head during operation, while the second contact component 92 contacts the pressure head of the mold. This allows for applying pressure to the pressure head to ensure the formation of the crater, while also applying pressure to other parts of the mold outside the pressure head to prevent the mold from warping and affecting the final product shape and performance.

[0051] As an example, the first contact member 91 has a U-shaped structure, with its two arms applying pressure to the portion of the mold outside the pressure head. The second contact member 92 is located between the two arms of the first contact member 91 and is used to apply pressure to the pressure head. Because it has two arms, and these two arms are located on both sides of the pressure head, the first contact member can simultaneously apply pressure to the portions of the mold located on both sides of the pressure head, effectively preventing the mold from warping.

[0052] Furthermore, during operation, the molding device of this invention does not simultaneously contact the corresponding parts of the mold with the first contact component 91 and the second contact component 92, but rather forms segmented pressurization. That is, the first contact component 91 first contacts the mold 10, and then the second contact component 92 contacts the pressure head. To achieve segmented pressurization, the force transmission assembly includes an elastic transmission component 6 and a rigid transmission component 7. Figure 4 As can be further seen, the rigid transmission component includes a first component 71 and a second component 72, which are coaxially arranged. For example, the first component 71 has a cylindrical structure, and the second component is disposed inside the first component 71. One end of the first component 71 abuts against one end of an elastic transmission component 6, for example, in the form of a compression spring, and a flange is preferably provided for this purpose. The other end of the elastic transmission component 6 abuts against the cooling device 5. The second component 72 passes through the elastic transmission component 6 and is fixedly connected to the cooling device 5. Of course, the cooling device 5 and the sensor 4 are preferred components. If the cooling device 5 and the sensor 4 are not provided, the second component 72 can be directly fixedly connected to the output part of the push cylinder 2. The first component 71 mates with the first contact component 91 at the other end, and the second component 72 mates with the second contact component 92 at the other end.

[0053] The forming apparatus also includes a cylindrical member 8. The cylindrical member 8 can be fixedly mounted to a fixed component such as a frame. The first member 71 of the rigid transmission member 7 passes through the cylindrical member 8. The cylindrical member 8 can provide guidance for the first member 71.

[0054] from Figure 3 and Figure 4 As can be seen, in the unpressurized state, or in other words, when the push cylinder 2 is not in operation, there is a height difference between the lower end faces of the first contact component 91 and the second contact component 92. This height difference can be slightly greater than the height difference between the pressure head of the mold 10 and the plane of other parts of the upper mold of the mold 10. Thus, as the motor 1 drives the push cylinder 2 to move, the second component 72 moves downward with the cooling device 5. At the same time, the cooling device 5 also moves downward through the elastic transmission component 6, causing the first component 71 to move downward. During the descent, the first contact component 91 contacts the mold 10 first, and then the second contact component 92 also contacts the pressure head, thereby achieving segmented pressurization.

[0055] As an example, from Figure 5 As can be seen, the first contact component 91 has a U-shaped structure, and the second contact component 92 can be accommodated inside the U-shaped structure. A hole is provided on the first contact component 91, and the lower end of the second component 72 passes through the hole to form a fixed connection with the second contact component 92. The fit between the first contact component 91 and the first component 71 does not need to be a fixed connection. This is because when the first component 71 moves downward, pressure can be applied to the first contact component 91 through the fit structure, thereby applying pressure to the mold 10. When moving upward, it is not the first component 71 that drives the first contact component 91 to move upward, but rather the second contact component 92 that drives the first contact component 91 to move upward during its upward movement, thereby driving the first component 71 to move upward.

[0056] Furthermore, a recess or a protrusion 922 may be provided on the second contact member 92 to cooperate with the protrusion or recess provided on the first contact member 91, thereby positioning the two and guiding their relative movement. The first member 71 has a first mating part 711 in the part that mates with the first contact member 91, while a corresponding second mating part 911 is provided on the first contact member 91 to achieve the mating between the two.

[0057] Figure 6 Schematic diagrams of the molding apparatus according to this utility model are shown in different working processes. Figure 6 In the middle, the left side is a perspective view of the contact component and the mold, while the middle and right sides show different working states of the contact component in the form of front views. Specifically, from... Figure 6 As can be seen from the intermediate diagram, at this point, the first contact component 91 has already made contact with the part outside the pressure head of the mold 10, and Figure 6The right-hand diagram shows that the second contact component 92 is also in contact with the pressure head. Thus, by using a segmented pressurization structure, pressure is first applied to the part of the mold outside the pressure head, and then pressure is applied to the pressure head, ensuring the formation of the crater while preventing the mold from warping.

[0058] Various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of this invention. Other embodiments of this invention will be apparent to those skilled in the art based on the practice of this invention disclosed in this specification. This specification and the examples disclosed herein should be considered illustrative only, and the true scope of this invention is defined by the appended claims and their equivalents.

Claims

1. A molding apparatus for achieving molding by applying force to a mold (10), the molding apparatus comprising: A force-generating device used to provide force; A force transmission component, connected to the force generating device, is used to transmit the force provided by the force generating device; Contact component (9) is connected to the force transmission assembly for applying force from the force transmission assembly to the mold (10). The contact component (9) is characterized in that it comprises: A first contact component (91) is used to contact a first portion of the mold (10); The second contact component (92) is used to contact the second part of the mold (10), wherein the first part and the second part are on different planes.

2. The molding apparatus according to claim 1, characterized in that, The force transmission assembly includes a rigid transmission member (7), which comprises: The first component (71) mates with the first contact component (91); The second component (72) engages with the second contact component (92).

3. The molding apparatus according to claim 2, characterized in that, The first component (71) and the second component (72) are coaxially arranged. The first component has a hollow structure, and the second component is disposed inside the first component.

4. The molding apparatus according to claim 3, characterized in that, The force transmission assembly further includes an elastic transmission member (6), which is disposed between the first member (71) and the force generating device and can transmit the force from the force generating device to the first member; the second member (72) is rigidly connected to the force generating device.

5. The molding apparatus according to claim 4, characterized in that, The elastic transmission component (6) is a compression spring.

6. The molding apparatus according to claim 3, characterized in that, It also includes a cylindrical member (8), which is installed to a fixing member, and the first member passes through the cylindrical member.

7. The molding apparatus according to any one of claims 1-6, characterized in that, The force generating device includes a motor (1) and a push cylinder (2).

8. The molding apparatus according to any one of claims 1-6, characterized in that, A sensor (4) is provided between the force generating device and the force transmission component.

9. The molding apparatus according to any one of claims 1-6, characterized in that, A cooling device (5) is provided between the force generating device and the force transmitting component.

10. The molding apparatus according to any one of claims 1-6, characterized in that, The first contact member (91) is U-shaped, and the second contact member (92) is disposed inside the U-shape; and / or The second contact component (92) is provided with a recess or a protrusion (922), and the first contact component (91) is provided with a corresponding protrusion or recess, for positioning and guiding between the two.

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