Preheating device used before mobile phone metal frame die casting

Abstract

The utility model discloses a preheating device before die casting of a mobile phone metal frame, which comprises a heating part, a heat conduction platform and a positioning jig, the heating part is arranged in the heat conduction platform and can heat the heat conduction platform, and the positioning jig is tightly fixed on the heat conduction platform, so that heat on the heat conduction platform can be transferred to the positioning jig. A containing groove used for containing a mobile phone metal frame is formed in the positioning jig, the shape of the containing groove is matched with the appearance of the mobile phone metal frame, and an elastic inner limiting mechanism is installed at the groove bottom of the containing groove. By means of the structural design, when the heating component works, the heat conduction platform can be heated, the temperature of the heat conduction platform can be transmitted to the positioning jig, preheating of the mobile phone metal frame is achieved, the temperature rise time of materials in the die-casting die is shortened, and the die-casting efficiency is improved. Meanwhile, the preheating device has an elastic self-adaptive positioning correction function, and can correct the deformed mobile phone metal frame, so that the mobile phone metal frame is more easily matched with the shape and the size of a mold cavity.

Description

Technical Field

[0001] The utility model belongs to the field of mobile phone metal frame production equipment, in particular to a preheating device before die-casting of the mobile phone metal frame. Background Art

[0002] Mobile phone metal frames, such as common aluminum frames, are mostly manufactured using a high-temperature hot die-casting process. The material for this process must be preheated to a suitable temperature range. This is because temperature matching reduces the material's temperature rise time within the mold, improving die-casting efficiency. Furthermore, the material, which has undergone thermal expansion and contraction, can more easily conform to the shape and size of the mold cavity after high-temperature heating. Utility Model Content

[0003] The purpose of the utility model is to provide a preheating device, which can preheat the metal frame material of a mobile phone used for high-temperature hot die casting, so as to reduce the temperature rise time of the material in the mold and improve the die casting efficiency.

[0004] The utility model is realized as follows: a preheating device for a mobile phone metal frame before die-casting, comprising a heating component, a heat-conducting platform, and a positioning jig, wherein the heating component is installed inside the heat-conducting platform for heating the heat-conducting platform; the positioning jig is tightly fixed on the heat-conducting platform, and the positioning jig is made of heat-conducting material;

[0005] The positioning fixture is provided with a receiving groove for accommodating the metal frame of the mobile phone, and the shape of the receiving groove matches the outer shape of the metal frame of the mobile phone; an elastic inner limiting mechanism is installed on the bottom of the receiving groove, and the elastic inner limiting mechanism includes an inner limiting mounting seat, a spring and a push block, and the spring and the push block are both installed in the inner limiting mounting seat. The push block presses against the inner side of the metal frame of the mobile phone under the elastic force of the spring.

[0006] Furthermore, the elastic internal limit mechanism includes two push blocks, and a mounting groove is provided in the internal limit mounting seat. The spring and the push block are both embedded in the mounting groove. The spring is in a compressed state, and the two push blocks are respectively located at both ends of the spring, and the two ends of the spring respectively press against the two push blocks.

[0007] Furthermore, the width of the abutting block matches the width of the mounting groove, so that the two outer side surfaces of the abutting block can respectively cling to the two inner wall surfaces of the mounting groove.

[0008] Furthermore, the elastic inner limiting mechanism also includes a cover plate, and the cover plate is fixedly covered on the installation groove.

[0009] Furthermore, the heating component is an electric heating tube, an installation channel is provided inside the heat conduction platform, and the electric heating tube is embedded in the installation channel.

[0010] Furthermore, the preheating device also includes a temperature sensor and a controller, and the controller is electrically connected to the heating component and the temperature sensor; the temperature sensor is embedded in the positioning jig, and is used to detect the temperature of the positioning jig in real time and feed back to the controller. When the positioning jig reaches the set temperature, the controller controls the heating component to stop heating, and when the positioning jig is lower than the set temperature, the controller controls the heating component to heat.

[0011] Furthermore, the positioning jig is made of copper.

[0012] Furthermore, a plurality of the heating components are provided inside the heat-conducting platform, and a plurality of the positioning fixtures are provided on the heat-conducting platform.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The preheating device provided by the present invention includes a heating component, a heat-conducting platform and a positioning jig. The heating component is installed inside the heat-conducting platform and can heat the heat-conducting platform. The positioning jig is tightly fixed on the heat-conducting platform, so that the heat on the heat-conducting platform can be transferred to the positioning jig. A receiving groove for accommodating the metal frame of the mobile phone is provided in the positioning jig. The shape of the receiving groove matches the outer shape of the metal frame of the mobile phone, and an elastic internal limiting mechanism is installed on the bottom of the receiving groove. Through the above structural design, when the heating component is working, the heat-conducting platform can be heated, and the temperature of the heat-conducting platform can be transferred to the positioning jig, thereby realizing the preheating of the metal frame of the mobile phone, reducing the temperature rise time of the material in the die-casting mold, and improving the die-casting efficiency. At the same time, the preheating device has an elastic adaptive positioning correction function, which can correct the deformed metal frame of the mobile phone, making it easier for the metal frame of the mobile phone to match the shape and size of the die-casting mold cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the preheating device provided by the embodiment of the utility model after being placed in the metal frame of a mobile phone;

[0016] Figure 2 This is a schematic diagram of the exploded structure of the preheating device provided in an embodiment of the present utility model;

[0017] Figure 3 This is a structural diagram of a positioning fixture for a preheating device provided in an embodiment of the present utility model;

[0018] Figure 4 yes Figure 3 Schematic diagram of the exploded structure of the positioning fixture shown. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance; in addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1 and Figure 2 , shows a preheating device for a mobile phone metal frame before die-casting provided by this embodiment, including a heating component 1, a heat-conducting platform 2 and a positioning fixture 3. The heating component 1 is installed inside the heat-conducting platform 2 and is used to heat the heat-conducting platform 2; the positioning fixture 3 is tightly fixed on the heat-conducting platform 2, and the positioning fixture 3 is made of heat-conducting material, such as copper.

[0022] Specifically, the heating component 1 is an electric heating tube, and a plurality of mounting channels 21 are provided inside the heat conducting platform 2, and the electric heating tube is embedded in the mounting channels 21. The heat conducting platform 2 is provided with a plurality of positioning fixtures 3 distributed side by side, such as Figure 3 As shown, each positioning fixture 3 is provided with a receiving groove 31 for accommodating the metal frame 200 of the mobile phone. The shape of the receiving groove 31 matches the outer shape of the metal frame 200 of the mobile phone, so that the outer side surface of the metal frame 200 of the mobile phone can just be in complete and close contact with the receiving groove 31.

[0023] Please also read Figure 4An elastic inner limit mechanism is provided on the bottom of the accommodating groove 31, and the elastic inner limit mechanism includes an inner limit mounting seat 41, a spring 42 and a push block 43. The spring 42 and the push block 43 are both installed in the inner limit mounting seat 41. The push block 43 presses against the inner side of the mobile phone metal frame 200 under the elastic force of the spring 42.

[0024] Specifically, the elastic internal limit mechanism includes two push blocks 43, and a mounting groove 411 is provided in the internal limit mounting seat 41. The spring 42 and the push block 43 are both embedded in the mounting groove 411. The spring 42 is in a compressed state. The two push blocks 43 are respectively located at the two ends of the spring 42, and the two ends of the spring 42 respectively press against the two push blocks 43.

[0025] Through the above structural design, when the heating component 1 is in operation, it can heat the heat-conducting platform 2, and the temperature of the heat-conducting platform 2 can be transferred to the positioning fixture 3, thereby preheating the mobile phone metal frame 100. The elastic inner limit mechanism's abutment block 43, under the elastic force of its spring 42, can press against the inner side of the mobile phone metal frame 200, reducing the material's temperature rise time within the die-casting mold and improving die-casting efficiency. At the same time, the preheating device has an elastic adaptive positioning correction function that can correct deformation of the mobile phone metal frame 200, making it easier for the mobile phone metal frame 200 to match the shape and size of the die-casting mold cavity.

[0026] Preferably, the width of the abutting block 43 matches the width of the mounting groove 411 , so that the two outer side surfaces of the abutting block 43 can slide closely against the two inner wall surfaces of the mounting groove 411 .

[0027] In order to fix the spring 42 and the abutting block 43 , the elastic inner limiting mechanism of this embodiment further includes a cover plate 44 . The cover plate 44 is fixedly covered on the installation groove 411 , thereby limiting the spring 42 and the abutting block 43 in the installation groove 411 .

[0028] Furthermore, the preheating device of this embodiment also includes a temperature sensor 5 and a controller, which is electrically connected to the heating element 1 and the temperature sensor 5. The controller can be located outside the device, while the temperature sensor 5 is embedded in the positioning jig 3, and is used to detect the temperature of the positioning jig 3 in real time and provide feedback to the controller. When the positioning jig 3 reaches the set temperature, the controller controls the heating element 1 to stop heating. When the positioning jig 3 falls below the set temperature, the controller controls the heating element 1 to heat again. By configuring the temperature sensor 5 and the controller, the preheating temperature can be controlled within a set range.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A preheating device for a mobile phone metal frame before die-casting, characterized in that: It includes a heating component, a heat-conducting platform and a positioning fixture. The heating component is installed inside the heat-conducting platform to heat the heat-conducting platform. The positioning fixture is tightly fixed on the heat-conducting platform and is made of heat-conducting material. The positioning fixture is provided with a receiving groove for accommodating the metal frame of the mobile phone, and the shape of the receiving groove matches the outer shape of the metal frame of the mobile phone; an elastic inner limiting mechanism is installed on the bottom of the receiving groove, and the elastic inner limiting mechanism includes an inner limiting mounting seat, a spring and a push block, and the spring and the push block are both installed in the inner limiting mounting seat. The push block presses against the inner side of the metal frame of the mobile phone under the elastic force of the spring.

2. The preheating device according to claim 1, characterized in that The elastic inner limit mechanism includes two abutting blocks, and a mounting groove is provided in the inner limit mounting seat. The spring and the abutting blocks are both embedded in the mounting groove. The spring is in a compressed state, and the two abutting blocks are respectively located at both ends of the spring, and the two ends of the spring respectively press against the two abutting blocks.

3. The preheating device according to claim 2, characterized in that The width of the abutting block matches the width of the mounting groove, so that the two outer side surfaces of the abutting block can respectively cling to the two inner wall surfaces of the mounting groove.

4. The preheating device according to claim 2, characterized in that The elastic inner limiting mechanism further includes a cover plate, and the cover plate is fixedly covered on the installation groove.

5. The preheating device according to claim 1, characterized in that The heating component is an electric heating tube. A mounting channel is provided inside the heat-conducting platform, and the electric heating tube is embedded in the mounting channel.

6. The preheating device according to claim 5, characterized in that It also includes a temperature sensor and a controller, which are electrically connected to the heating component and the temperature sensor; the temperature sensor is embedded in the positioning jig, and is used to detect the temperature of the positioning jig in real time and feed back to the controller. When the positioning jig reaches the set temperature, the controller controls the heating component to stop heating, and when the positioning jig is lower than the set temperature, the controller controls the heating component to heat.

7. The preheating device according to any one of claims 1 to 6, characterized in that The positioning jig is made of copper.

8. The preheating device according to any one of claims 1 to 6, characterized in that A plurality of heating components are provided inside the heat-conducting platform, and a plurality of positioning fixtures are provided on the heat-conducting platform.

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