Rapid forming die for 5G communication equipment box body

Abstract

The invention discloses a 5G communication equipment box rapid forming mold, and relates to the technical field of molds, the 5G communication equipment box rapid forming mold comprises a lower mold and a threaded core assembly, guide columns are arranged on the two sides of the upper surface of the lower mold, the threaded core assembly comprises a rotating lead screw arranged in a lead screw cavity in a penetrating mode, and a threaded groove is formed in the bottom of the outer wall of a core rod. According to the rapid forming mold for the 5G communication equipment box body, a high-precision hexagon nut is in threaded connection to the bottom of the core rod in advance, so that the hexagon nut can be wrapped by a raw material during injection molding of the box body, and the hexagon nut is cured at a specified part of the box body after the raw material is cured; therefore, the original injection molding of the position of the threaded hole of the molded box body is changed into the embedding of the nut, and the capillary support legs on the periphery of the hexagonal nut are matched to enhance the combination degree between the box body and the raw material, so that the hexagonal nut is prevented from loosening, and the high-precision matching between the threaded hole and the bolt is realized; therefore, the electrical performance and the mechanical stability of the equipment are positively influenced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molds, in particular to a 5G communication equipment box rapid forming mold. BACKGROUND

[0002] Currently, the 5G communication equipment box is usually manufactured by using ABS, PC or glass fiber reinforced plastic through a mold injection molding process. The mold is usually divided into an upper mold and a lower mold. The upper mold is combined with the lower mold through guide columns. The raw material is injected into the inner cavity after the molds are combined. After the raw material is solidified and formed, the box is formed. As a core structural part, the box needs to be fixed through threaded connection, assembled through external interface, and sealed as a whole machine. The precision and reliability of the threaded connection directly affect the electrical performance and mechanical stability of the equipment. With the development of high-end communication equipment such as 5G base stations and radio frequency modules towards high frequency and integration, the precision requirement of the threaded hole is increasingly strict. In the existing mold injection molding process, a threaded core is arranged in the mold, and the threaded structure is formed by using plastic melt cooling and solidification.

[0003] The existing method of arranging a threaded core in the mold and using plastic melt cooling and solidification to form a threaded structure has the following defects:

[0004] During the cooling process of the plastic melt, there is a volume shrinkage rate of 0.5% to 3%, and the shrinkage difference between the thread top (thin wall) and the thread bottom (thick wall) will intensify the thread distortion, which makes it difficult to control the parameters of the actual formed threaded hole within the preset value, and the module is prone to looseness in a vibrating environment, affecting the signal transmission stability. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a 5G communication equipment box rapid forming mold, which solves the problems raised in the background art.

[0006] To achieve the above purpose, the present application realizes the following technical scheme: a 5G communication equipment box rapid forming mold, comprising a lower mold and a threaded core assembly, the upper surface of the lower mold is provided with guide columns on both sides, and the surface of the guide columns is provided with an upper mold, the inner part of the upper mold is provided with a screw rod cavity, a magnet cavity and a storage cavity from top to bottom, the threaded core assembly comprises a rotating screw rod arranged in the screw rod cavity, the top of the rotating screw rod is connected with a micro motor, the outer wall of the rotating screw rod is provided with a moving seat, the bottom of the moving seat is rotatably connected with a core rod, the bottom end of the rotating screw rod is provided with a connecting column, the outer wall of the core rod is provided with a threaded groove, the threaded groove is provided with a hexagonal nut in a threaded manner, the outer side of the hexagonal nut is provided with a capillary foot, and the upper surface and the lower surface of the hexagonal nut are provided with an extension sleeve.

[0007] Further, the micro motor is fixed to the top surface of the upper mold, and the micro motor is arranged in one-to-one with the rotating screw rod.

[0008] Further, the connecting column is slidingly connected in the rotating screw rod, and the bottom of the connecting column is fixedly connected with the inside of the core rod.

[0009] Further, the threaded core assembly is located at the gap after the upper mold and the lower mold are combined, and the gap is the wall thickness position after the box is formed.

[0010] Further, the total depth of the extension sleeve and the hexagonal nut is greater than the height of the threaded groove, and the bottom of the core rod is flush with the bottom of the extension sleeve of the lower surface of the hexagonal nut.

[0011] Further, the inner wall of the magnet cavity is fixed with a nut positioning assembly, the nut positioning assembly comprises an adsorbing electromagnet and a spring, and the bottom of the adsorbing electromagnet is connected with the spring.

[0012] Further, the bottom of the spring is connected with a force receiving disc, and the bottom of the force receiving disc is fixed with a lifting sleeve.

[0013] Further, the bottom of the lifting sleeve is fixed with a positioning disc, and the bottom surface of the positioning disc is in contact with the top surface of the extension sleeve of the upper surface of the hexagonal nut.

[0014] Further, the outer mouth structure size of the positioning disc is matched with the inner mouth structure size of the receiving cavity, and the inner mouth size of the positioning disc and the lifting sleeve is matched with the outer mouth size of the core rod.

[0015] Further, the lifting sleeve penetrates the magnet cavity and the receiving cavity, and the lifting sleeve, the force receiving disc and the positioning disc are elastically connected with the adsorbing electromagnet through the spring.

[0016] The application provides a 5G communication equipment box rapid forming mold, which has the following beneficial effects:

[0017] 1. The 5G communication equipment box rapid forming mold, by pre-threading a high-precision hexagonal nut at the bottom of the core rod, the box can be wrapped with the hexagonal nut during injection molding, and the hexagonal nut is solidified in the specified position of the box after the material solidifies, so that the threaded hole position of the molded box changes from the original injection molding to the embedded nut, and the hexagonal nut is combined with the surrounding capillary foot to enhance the bonding between the hexagonal nut and the material, so as to prevent the hexagonal nut from loosening, and to realize high-precision cooperation between the threaded hole and the bolt, thereby positively affecting the electrical performance and mechanical stability of the equipment.

[0018] 2. The 5G communication equipment box rapid forming mold improves the fitting accuracy with bolts by embedding hex nuts in the process of box injection molding, and when the hex nuts are pre-installed, the embedding depth of the hex nuts is positioned by the positioning disc to ensure that the bolts can be fitted with the embedded hex nuts after the box is formed, avoiding the problem that the shallow or deep embedding of the hex nuts leads to the inability to fit the threads and affects the stability of the module installation, and during injection molding, the positioning disc automatically rises and shrinks to ensure the flushness of the side of the box after forming. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The lower mold and the upper mold of the 5G communication equipment box rapid forming mold of the present application are shown in the structure diagram when the lower mold and the upper mold are not closed;

[0020] Figure 2 The lower mold and the upper mold of the 5G communication equipment box rapid forming mold of the present application are shown in the structure diagram after the lower mold and the upper mold are closed;

[0021] Figure 3 The upper mold of the 5G communication equipment box rapid forming mold of the present application is shown in the cross-sectional structure diagram;

[0022] Figure 4 The core rod and the connecting column of the 5G communication equipment box rapid forming mold of the present application are shown in the structure diagram after separation;

[0023] Figure 5 The lifting sleeve structure diagram of the 5G communication equipment box rapid forming mold of the present application is shown in the structure diagram;

[0024] Figure 6 The hex nut and the core rod of the 5G communication equipment box rapid forming mold of the present application are shown in the structure diagram after separation;

[0025] Figure 7 The overall structure diagram of the 5G communication equipment box rapid forming mold of the present application is shown in the structure diagram of the thread core assembly and the nut positioning assembly.

[0026] In the figure: 1, lower mold; 2, guide column; 3, upper mold; 4, screw cavity; 5, magnet cavity; 6, storage cavity; 7, thread core assembly; 701, rotating screw; 702, micro motor; 703, moving seat; 704, core rod; 705, connecting column; 706, thread groove; 707, hex nut; 708, capillary foot; 709, extension sleeve; 8, nut positioning assembly; 801, adsorption electromagnet; 802, spring; 803, force disc; 804, lifting sleeve; 805, positioning disc. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0028] As Figures 1-7 shown, the present application provides a technical solution: a 5G communication equipment box rapid forming mold, comprising a lower mold 1 and a threaded core assembly 7, the upper surface of the lower mold 1 is provided with guide columns 2 on both sides, and the surface of the guide column 2 is provided with an upper mold 3, the inside of the upper mold 3 is sequentially provided with a screw rod cavity 4, a magnet cavity 5 and a storage cavity 6 from top to bottom, the threaded core assembly 7 comprises a rotating screw rod 701 provided in the inside of the screw rod cavity 4, and the top of the rotating screw rod 701 is connected with a micro motor 702, the outer wall of the rotating screw rod 701 is sleeved with a moving seat 703, and the bottom of the moving seat 703 is rotatably connected with a core rod 704, the bottom end of the rotating screw rod 701 is provided with a connecting column 705, the outer wall of the bottom of the core rod 704 is provided with a threaded groove 706, and the outer wall of the threaded groove 706 is threadedly connected with a hexagonal nut 707, the outer side of the hexagonal nut 707 is provided with a capillary foot 708, and the upper surface and the lower surface of the hexagonal nut 707 are provided with an extension sleeve 709, the micro motor 702 is fixed to the top surface of the upper mold 3, and the micro motor 702 and the rotating screw rod 701 are one-to-one arranged, the connecting column 705 is slidably connected in the inside of the rotating screw rod 701, and the bottom of the connecting column 705 is fixedly connected with the inside of the core rod 704, the threaded core assembly 7 is located at the gap after the combination of the upper mold 3 and the lower mold 1, the gap is the wall thickness position after the box forming, the total depth of the extension sleeve 709 and the hexagonal nut 707 is greater than the height of the threaded groove 706, and the bottom of the core rod 704 is flush with the bottom of the extension sleeve 709 of the lower surface of the hexagonal nut 707;

[0029] The specific operation is as follows: when the 5G communication equipment box is injection molded, the rotating screw rod 701 is driven to rotate by the micro motor 702, so that the moving seat 703 carrying the core rod 704 descends along the surface of the rotating screw rod 701, the built-in encoder of the micro motor 702 controls the rotating angle of the rotating screw rod 701, so as to accurately control the descending height of the core rod 704, and the connecting column 705 is stretched out from the bottom end of the rotating screw rod 701 when the core rod 704 descends;

[0030] Then the hexagonal nut 707 is twisted to be threadedly connected to the bottom of the core rod 704, at this time the hexagonal nut 707 cooperates with the extension sleeves 709 on the upper surface and the lower surface to completely cover the threaded groove 706;

[0031] Afterwards, the upper mold 3 is sleeved to the outer wall of the guide column 2 and slides along the surface thereof, so that the upper mold 3 and the lower mold 1 are combined, and then the injection material is injected into the inner cavity after the combination by using the injection port, which is not shown in the figure, and the material fills the gap between the upper mold 3 and the lower mold 1, so as to wrap the hexagonal nut 707, and after the material is cooled and formed, the box body is preliminarily formed, at this time, the solidified material wraps the hexagonal nut 707 to limit the hexagonal nut 707, and the capillary foot 708 is used to enhance the bonding degree, so that the hexagonal nut 707 cannot be moved or rotated, and the hexagonal nut 707 cooperates with the extension sleeve 709 on the upper surface and the lower surface to completely cover the thread groove 706, so as to avoid the direct contact between the material and the thread groove 706;

[0032] When the mold is demolded, the micro motor 702 is reversely rotated to make the moving seat 703 carry the core rod 704 to ascend along the surface of the rotating lead screw 701, and the rotating lead screw 701 drives the core rod 704 to rotate through the connecting column 705, and the connecting column 705 is retracted into the rotating lead screw 701 as the core rod 704 ascends, and since the hexagonal nut 707 is solidified, the thread groove 706 part at the bottom of the core rod 704 is separated from the hexagonal nut 707 by rotating, and after the core rod 704 is separated from the hexagonal nut 707, the mold is opened to separate the upper mold 3 and the lower mold 1, and then the formed box body can be taken out;

[0033] Based on the above description, the hexagonal nut 707 with high precision is pre-threadedly connected to the bottom of the core rod 704, so that the material can wrap the hexagonal nut 707 when the box body is injection molded, and the hexagonal nut 707 is solidified in the specified position of the box body after the material is solidified, so that the thread hole position of the formed box body is changed from the original injection molding to the embedded nut, and the capillary foot 708 around the hexagonal nut 707 enhances the bonding degree between the hexagonal nut 707 and the material, so as to prevent the hexagonal nut 707 from loosening, so as to realize the high-precision cooperation between the thread hole and the bolt, and thus positively affect the electrical performance and mechanical stability of the equipment.

[0034] As Figures 1-7As shown, the inner wall top of the magnet cavity 5 is fixed with a nut positioning assembly 8, the nut positioning assembly 8 comprises an adsorption electromagnet 801 and a spring 802, the bottom of the adsorption electromagnet 801 is connected with the spring 802, the bottom of the spring 802 is connected with a force receiving disc 803, the bottom of the force receiving disc 803 is fixed with a lifting sleeve 804, the bottom of the lifting sleeve 804 is fixed with a positioning disc 805, the bottom surface of the positioning disc 805 is in contact with the top surface of the extension sleeve 709 on the upper surface of the hexagonal nut 707, the outer opening structure size of the positioning disc 805 is matched with the inner opening structure size of the receiving cavity 6, and the inner opening size of the positioning disc 805 and the lifting sleeve 804 is matched with the outer opening size of the core rod 704, the lifting sleeve 804 penetrates through the magnet cavity 5 and the receiving cavity 6, and the lifting sleeve 804, the force receiving disc 803 and the positioning disc 805 are elastically connected with the adsorption electromagnet 801 through the spring 802.

[0035] Specific operation is as follows, in the process of box injection molding, the embedding depth of the hexagonal nut 707 needs to be planned, so as to prevent the hexagonal nut 707 from being embedded too deep to cause the bolt to be unable to be deeply embedded in the position and difficult to complete the threaded connection, and also prevent the hexagonal nut 707 from being embedded too shallow to cause the bolt to be unable to stably install the module after being completely tightened, for this, when the hexagonal nut 707 is installed at the bottom of the core rod 704, the adsorption electromagnet 801 is kept off, at this time, the lifting sleeve 804 is lowered under the elastic action of the spring 802 until the force receiving disc 803 is limited by the magnet cavity 5, and when the hexagonal nut 707 is threaded and connected and installed at the bottom of the core rod 704, until the top surface of the extension sleeve 709 on the upper surface of the hexagonal nut 707 is in contact with the bottom surface of the positioning disc 805, at this time, the lowering height of the core rod 704 is cooperated to control so that the embedding depth of the hexagonal nut 707 reaches the preset range.

[0036] Then, before injection molding starts, the adsorption electromagnet 801 is powered on to adsorb the force receiving disc 803, at this time, the force receiving disc 803 is raised to compress the spring 802, and the lifting sleeve 804 carrying the positioning disc 805 is raised until the positioning disc 805 fits inside the receiving cavity 6, and then the injection molding operation starts, since the positioning disc 805 fits inside the receiving cavity 6, it can ensure that the side of the box is flush after molding.

[0037] Based on the above description, the hexagonal nut 707 is embedded in the process of box injection molding to improve the fitting accuracy with the bolt, and when the hexagonal nut 707 is pre-installed, the embedding depth of the hexagonal nut 707 is positioned by the positioning disc 805 to ensure that the bolt can be fitted with each embedded hexagonal nut 707 after the box is molded, avoiding the problem that the hexagonal nut 707 is embedded too shallow or too deep to cause the thread to be unable to be fitted and affect the stability of the module installation, and when injection molding, the positioning disc 805 automatically rises to shrink to ensure that the side of the box is flush after molding.

[0038] In summary, the 5G communication equipment box rapid forming die, in use, first, when the 5G communication equipment box is injection molded, the miniature motor 702 drives the rotating lead screw 701 to rotate, so that the moving seat 703 carries the core rod 704 to descend along the surface of the rotating lead screw 701, the built-in encoder of the miniature motor 702 controls the rotating angle of the rotating lead screw 701, so as to accurately control the descending height of the core rod 704, and the connecting column 705 extends from the bottom end of the rotating lead screw 701 when the core rod 704 descends;

[0039] Then, the hexagonal nut 707 is screwed to be threadedly connected to the bottom of the core rod 704, at this time, the extension sleeve 709 on the upper surface and the lower surface of the hexagonal nut 707 completely covers the thread groove 706, and when the hexagonal nut 707 is installed at the bottom of the core rod 704, the adsorption electromagnet 801 is kept off, at this time, the lifting sleeve 804 descends under the elastic action of the spring 802 until the stressed disc 803 is limited by the magnet cavity 5, and when the hexagonal nut 707 is threadedly connected and installed at the bottom of the core rod 704, until the top surface of the upper surface extension sleeve 709 of the hexagonal nut 707 contacts the bottom surface of the positioning disc 805, at this time, it indicates that the embedding depth of the hexagonal nut 707 has been positioned;

[0040] Then, before injection starts, the adsorption electromagnet 801 is powered on to adsorb the stressed disc 803, at this time, the stressed disc 803 rises so that the spring 802 is compressed, and the lifting sleeve 804 carries the positioning disc 805 to rise until the positioning disc 805 fits into the inside of the receiving cavity 6;

[0041] Then, the upper mold 3 is sleeved to the outer wall of the guide column 2 and slides downward along the surface, so that the upper mold 3 and the lower mold 1 are closed, and then the injection port is used to inject the injection material into the inner cavity after being closed, the material fills in the gap between the upper mold 3 and the lower mold 1, so as to wrap the hexagonal nut 707, after the material cools and forms, the solidified material wraps the hexagonal nut 707 to limit it, cooperates with the capillary foot 708 to enhance the bonding degree, so that the hexagonal nut 707 cannot move or rotate, and the extension sleeve 709 on the upper surface and the lower surface of the hexagonal nut 707 completely covers the thread groove 706 to avoid direct contact between the material and the thread groove 706;

[0042] When demolding, the miniature motor 702 reversely rotates so that the moving seat 703 carries the core rod 704 to rise along the surface of the rotating lead screw 701, at the same time, the rotating lead screw 701 drives the core rod 704 to rotate through the connecting column 705, and the connecting column 705 retracts into the rotating lead screw 701 as the core rod 704 rises, and because the hexagonal nut 707 is solidified, the thread groove 706 part at the bottom of the core rod 704 is separated from the inside of the hexagonal nut 707 by rotating, after the core rod 704 and the hexagonal nut 707 are separated, the mold is opened so that the upper mold 3 and the lower mold 1 are separated, and then the formed box can be taken out.

[0043] Embodiments of the application are presented for the purpose of illustration and description, and not by way of limitation or limitation of the application. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments were chosen and described in order to best explain the principles of the application and its practical application, and to enable others skilled in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A rapid prototyping mold for a 5G communication equipment housing, comprising a lower mold (1) and a threaded core assembly (7), characterized in that: The lower mold (1) has guide posts (2) on both sides of its upper surface, and the upper mold (3) passes through the surface of the guide posts (2). The upper mold (3) has a screw cavity (4), a magnet cavity (5), and a storage cavity (6) sequentially opened from top to bottom around its perimeter. The threaded core assembly (7) includes a rotating screw (701) that passes through the screw cavity (4), and a micro motor (702) is connected to the top of the rotating screw (701). A movable seat is fitted on the outer wall of the rotating screw (701). 703), and the bottom of the movable seat (703) is rotatably connected to the core rod (704), the bottom end of the rotating screw (701) is provided with a connecting column (705), the bottom of the outer wall of the core rod (704) is provided with a threaded groove (706), and the outer wall of the threaded groove (706) is threadedly connected with a hexagonal nut (707), the outer side of the hexagonal nut (707) is provided with a capillary support (708), and the upper and lower surfaces of the hexagonal nut (707) are both provided with extension sleeves (709).

2. The rapid prototyping mold for a 5G communication equipment housing according to claim 1, characterized in that: The micro motor (702) is fixed to the top surface of the upper mold (3), and the micro motor (702) and the rotating lead screw (701) are arranged in a one-to-one manner.

3. The rapid prototyping mold for a 5G communication equipment housing according to claim 1, characterized in that: The connecting column (705) is slidably connected inside the rotating lead screw (701), and the bottom of the connecting column (705) is fixedly connected to the inside of the core rod (704).

4. The rapid prototyping mold for a 5G communication equipment housing according to claim 1, characterized in that: The threaded core assembly (7) is located in the gap between the upper mold (3) and the lower mold (1) after they are combined. This gap is the position of the wall thickness after the box body is formed.

5. A rapid prototyping mold for a 5G communication equipment housing according to claim 1, characterized in that: The total depth of the extension sleeve (709) and the hexagonal nut (707) is greater than the height of the threaded groove (706), and the bottom of the core rod (704) is flush with the bottom of the extension sleeve (709) on the lower surface of the hexagonal nut (707).

6. The rapid prototyping mold for a 5G communication equipment housing according to claim 1, characterized in that: The top of the inner wall of the magnet cavity (5) is fixed with a nut positioning assembly (8), which includes an electromagnet (801) and a spring (802). The bottom of the electromagnet (801) is connected to the spring (802).

7. A rapid prototyping mold for a 5G communication equipment housing according to claim 6, characterized in that: The bottom of the spring (802) is connected to a force-receiving disc (803), and a lifting sleeve (804) is fixed to the bottom of the force-receiving disc (803).

8. A rapid prototyping mold for a 5G communication equipment housing according to claim 7, characterized in that: The bottom of the lifting sleeve (804) is fixed with a positioning disc (805), and the bottom surface of the positioning disc (805) is in contact with the top surface of the extension sleeve (709) on the upper surface of the hexagonal nut (707).

9. A rapid prototyping mold for a 5G communication equipment housing according to claim 8, characterized in that: The outer opening dimensions of the positioning disc (805) are adapted to the inner opening dimensions of the receiving cavity (6), and the inner opening dimensions of the positioning disc (805) and the lifting sleeve (804) are adapted to the outer opening dimensions of the core rod (704).

10. A rapid prototyping mold for a 5G communication equipment housing according to claim 9, characterized in that: The lifting sleeve (804) passes through the magnet cavity (5) and the storage cavity (6), and the lifting sleeve (804), the force-bearing disc (803), and the positioning disc (805) are elastically connected to the adsorption electromagnet (801) through the spring (802).

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