CN218286494U

CN218286494U - Injection mold of RF terminal

Info

Publication number: CN218286494U
Application number: CN202222913363.7U
Authority: CN
Inventors: 戴永金; 姚捷曼; 丁福光
Original assignee: Dongguan Jinman Electronic Technology Co ltd
Current assignee: Dongguan Jinman Electronic Technology Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-01-13
Anticipated expiration: 2032-11-03

Abstract

An injection mold for an RF terminal, comprising: cope match-plate pattern, lower bolster, a plurality of mould benevolence and a plurality of lower mould benevolence, cope match-plate pattern have a plurality of be used for holding the last cave of mould benevolence, the lower bolster has a plurality of lower caves that are used for holding lower mould benevolence, a plurality of upper die cave and a plurality of lower die cave are just right one by one along the upper and lower direction, its characterized in that: the upper mold core and the lower mold core are combined to form a mold cavity, and the upper mold core is provided with a guide mechanism with a position lower than that of the mold cavity. Because the guide mechanism is positioned at the lower position of the mold cavity, the RF terminal can be pre-guided when the injection mold is closed, so that the positioning precision is improved, and the product quality is further improved.

Description

Injection mold of RF terminal

Technical Field

The utility model relates to an injection mold especially relates to an injection mold of RF terminal.

Background

The RF connector can be used in the radio frequency fields of mobile phones, computers, tablets, game equipment, digital applications, wireless access points and the like, and has a wide application range. The RF terminal is an important component part of the RF connector, and during the manufacturing process of the RF terminal, a plastic body of the RF terminal needs to be formed by injection molding so as to fix a center pin and a housing of the RF terminal.

Most of the existing injection molds for the RF terminals adopt unilateral sliders or bilateral sliders to form mold cavities, and the sliders need to be assembled in a horizontal sliding mode. However, the above injection mold has the following drawbacks:

1. because there is the dimensional error in injection mold's upper and lower mould benevolence itself, consequently set up the accumulative total error that the slider can increase the die cavity on this basis again, lead to injection mold's precision poor, product quality can't further improve.

2. Besides the slide block, a channel for guiding the slide block to slide is required to be arranged in the injection mold, so that the whole structure is complex.

3. When the slider is assembled, the slider can pass through the welding leg of the RF terminal, and because the slider is used for forming a die cavity, the slider needs to be closely matched with the welding leg in sequence (namely interference fit), and the slider can extrude the welding leg when passing through the welding leg, so that the welding leg is scratched and a fusion line is formed, and meanwhile, the wear rate of the slider is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses technical scheme is to above-mentioned condition, provides an injection mold of RF terminal in order to solve above-mentioned problem, injection mold includes: the upper template is provided with a plurality of upper mold cavities for accommodating the upper mold cores, the lower template is provided with a plurality of lower mold cavities for accommodating the lower mold cores, the upper mold cavities and the lower mold cavities are opposite one by one along the vertical direction, the upper mold cores and the lower mold cores are combined to form a mold cavity, and the upper mold cores are provided with guide mechanisms with the positions lower than the mold cavity.

Further, the upper mold core comprises: the device comprises an upper base body, a forming seat, two first limiting parts, two second limiting parts and an ejection assembly, wherein the forming seat is positioned below the upper base body, the two first limiting parts are respectively positioned on two opposite side surfaces of the forming seat, the two second limiting parts are respectively positioned on the other two opposite side surfaces of the forming seat, the forming seat is provided with a forming groove with a downward opening, the two first limiting parts and the two second limiting parts form a guide mechanism, the bottoms of the two first limiting parts and the two second limiting parts are positioned at positions lower than the forming groove, and the ejection assembly penetrates through the upper base body and extends to the top surface of the forming groove; the lower mold core comprises: the injection molding device comprises a lower base body, a boss and an injection molding channel, wherein the boss is positioned above the lower base body, the injection molding channel extends from the lower base body to the upper surface of the boss, and the upper surface of the boss, a molding groove and the lower surface of an ejection assembly form a mold cavity.

Furthermore, the upper base body, the forming base, the two first limiting parts and the two second limiting parts are arranged in a split mode.

Furthermore, two first locating parts are respectively embedded in two opposite side surfaces of the forming base, and two second locating parts are respectively embedded in the other two opposite side surfaces of the forming base.

Further, the bottom of the first limiting piece is provided with a notch.

Further, the second limiting parts are provided with guide inclined planes, and the distance between the guide inclined planes of the two second limiting parts is gradually increased from top to bottom.

Further, the forming base is also provided with two positioning grooves, one positioning groove is positioned between the forming groove and one second limiting piece, the other positioning groove is positioned between the forming groove and the other second limiting piece, and the top surfaces of the positioning grooves are positioned at positions lower than the top surface of the forming groove.

Further, the ejection assembly includes: the guide sleeve penetrates through the upper base body and is fixedly connected with the forming seat, the ejector pin can be inserted into the guide sleeve in a vertically moving mode and extends to the top surface of the forming groove, and the upper surface of the boss, the forming groove and the lower surface of the ejector pin form a die cavity.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

1. because the guide mechanism is positioned at the lower position of the mold cavity, the RF terminal can be pre-guided when the injection mold is closed, so that the positioning precision is improved, and the product quality is further improved.

2. Because the die cavity is directly formed by combining the upper die core and the lower die core, the injection die does not need to be provided with a slide block, and the integral structure can be simplified.

3. The injection mold does not need to be provided with the slide block, so that the problem that the welding leg of the RF terminal is scratched by the slide block can be avoided, and a fusion line can not be formed.

4. The upper die core adopts a split structure, and easily-damaged parts can be replaced independently, so that the replacement cost is reduced; and the disassembly can be completed on the machine table without disassembling the mold, thereby improving the replacement efficiency.

Drawings

Fig. 1 is a schematic view of an RF terminal material strap according to the present invention;

fig. 2 is a schematic view of the RF terminal according to the present invention before injection molding;

fig. 3 is a schematic view of the RF terminal according to the present invention after injection molding;

fig. 4 is a schematic view of an injection mold according to the present invention;

FIG. 5 isbase:Sub>A vertical sectional view taken along the line A-A of the injection mold according to the present invention;

fig. 6 is a schematic view of an upper mold core according to the present invention;

fig. 7 is a schematic view of a lower mold core according to the present invention.

Detailed Description

It is specifically noted that, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise; the meaning of "several" is at least one. In the embodiments of the present invention, all the directional indicators (such as up, down, left, right, front, rear \8230;) are used only to explain the relative positional relationship between the components in a specific posture, the motion situation, etc., and if the specific posture is changed, the directional indicator is changed accordingly.

The technical solution of the present invention is further described below by way of examples:

as shown in fig. 1 to 3, the RF terminal tape includes: a material frame 100 and a plurality of RF terminals 200. Prior to injection molding, the RF terminal 200 includes: the center pin 201 and the shell 202 are connected with the material frame 100 through connecting plates, the center pin 201 can be turned over and inserted into the center of the shell 202 after the connecting plates of the center pin 201 are bent, and two welding feet 2020 are arranged on the side surface of the shell 202. After injection molding, the bottom of the housing 202 forms the plastic body 203 of the RF terminal 200, and then only the cutting process is needed to cut the connection plates of the center pin 201 and the housing 202 to form the single independent RF terminal 200.

In order to realize the injection molding process for the RF terminals 200, the utility model provides an injection mold for RF terminals, which is shown in fig. 4 to 5 and comprises: the mold comprises an upper template 1, a lower template 2, a plurality of upper mold cores 3 and a plurality of lower mold cores 4, wherein the upper template 1 is provided with a plurality of upper mold cavities 10 used for accommodating the upper mold cores 3, the lower template 2 is provided with a plurality of lower mold cavities 20 used for accommodating the lower mold cores 4, the upper mold cavities 10 and the lower mold cavities 20 are aligned one by one in the vertical direction, the upper mold cores 3 and the lower mold cores 4 are combined to form a mold cavity, and the upper mold cores 3 are provided with a guide mechanism with the position lower than the mold cavity.

Before injection molding, the material frame 100 is placed on the lower mold plate 2, when mold closing is carried out, the guide mechanism is in contact with the shell 202 of the RF terminal 200 in advance to play the role of guide and limiting until mold closing is finished, and when injection molding is carried out, plastic is injected into a mold cavity to form the plastic main body 203 of the RF terminal 200.

Since the guide mechanism is located at a lower position of the mold cavity, the RF terminal 200 can be pre-guided when the injection mold is closed, thereby improving the positioning accuracy and further improving the product quality.

Because the die cavity is directly formed by combining the upper die core 3 and the lower die core 4, the injection die does not need to be provided with a slide block, and the whole structure can be simplified.

Since the injection mold does not need to be equipped with a slider, the problem that the fillet 2020 of the RF terminal 200 is scratched by the slider can be avoided, and a weld line is not formed.

As a preferable mode, as shown in fig. 6 to 7, the upper mold core 3 includes: the upper base body 31, the forming base 32, two first limiting parts 33, two second limiting parts 34 and the ejection assembly 35, wherein the forming base 32 is located below the upper base body 31, the two first limiting parts 33 are located on two opposite side surfaces of the forming base 32 respectively, the two second limiting parts 34 are located on the other two opposite side surfaces of the forming base 32 respectively, the forming base 32 is provided with a forming groove 321 which is opened downwards, the two first limiting parts 33 and the two second limiting parts 34 form a guide mechanism, the bottoms of the two first limiting parts 33 and the two second limiting parts 34 are located at positions lower than the forming groove 321, and the ejection assembly 35 penetrates through the upper base body 31 and extends to the top surface of the forming groove 321; the lower core insert 4 includes: the injection molding device comprises a lower base body 41, a boss 42 and an injection molding channel 43, wherein the boss 42 is positioned above the lower base body 41, the injection molding channel 43 extends from the lower base body 41 to the upper surface of the boss 42, and the upper surface of the boss 42, a molding groove 321 and the lower surface of the ejection assembly 35 form a mold cavity. Before injection molding, the boss 42 is located below the housing 202, after an injection mold is closed, the top of the housing 202 is inserted between the forming seat 32 and the ejection assembly 35, the bottom of the housing 202 is located in a mold cavity, two first limiting members 33 limit the connecting plate of the center pin 201 and the housing 202 in the horizontal direction, and two second limiting members 34 limit the two welding pins 2020 in the horizontal direction, so that the RF terminal 200 is pre-aligned; in injection molding, plastic is injected into the mold cavity from the injection channel 43, forming the plastic body 203 of the RF terminal 200; after the injection molding is completed, the injection mold is opened, and the RF terminal 200 is ejected by the ejection assembly 35.

As a more preferable scheme, please refer to fig. 5, wherein the upper base 31, the forming base 32, the two first limiting members 33, and the two second limiting members 34 are separately disposed. Namely, the upper mold core 3 is of a split structure. Because the two first limiting members 33 and the two second limiting members 34 need to have a pre-straightening effect on a product and can be in contact with the product in the straightening process, the two first limiting members 33 and the two second limiting members 34 can be worn along with the increase of the number of times of use. Compared with an integrated structure, the split structure can replace the first limiting part 33 and the second limiting part 34 independently without replacing the whole upper die core 3, and the cost is saved. In addition, because the forming base 32, the two first limiting members 33 and the two second limiting members 34 are all located below the upper base 31, a worker can directly replace the two first limiting members 33 and the two second limiting members 34 on the machine table of the device without disassembling the mold (i.e., without disassembling the entire injection mold from the device), and the replacement efficiency is high.

More preferably, the two first limiting members 33 are respectively embedded on two opposite side surfaces of the forming base 32, and the two second limiting members 34 are respectively embedded on the other two opposite side surfaces of the forming base 32. Compared with the structure that the limiting part is additionally arranged on the outer side of the side surface of the forming seat 32, the embedded structure can reduce the overall size of the upper mold core 3, and has a guiding function and convenient disassembly and assembly when the limiting part is installed.

As a more preferable scheme, the bottom of the first limiting member 33 has a notch 330. When the injection mold is closed, the central pin 201 and the connecting plates of the housing 202 are inserted into the notches 330 of the two first stoppers 33, respectively, thereby playing a role in action.

As a more preferable scheme, the second limiting members 34 have inclined guide surfaces 340, and the distance between the inclined guide surfaces 340 of the two second limiting members 34 gradually increases from top to bottom. When the injection mold is closed, the guide slope 340 can guide the fillet 2020, and guide and limit the RF terminal.

As a more preferable scheme, the molding base 32 further has two positioning grooves 322, one positioning groove 322 is located between the molding groove 321 and one second stopper 34, the other positioning groove 322 is located between the molding groove 321 and the other second stopper 34, and top surfaces of the positioning grooves 322 are located at positions lower than the top surface of the molding groove 321. The depth of constant head tank 322 is less than the depth of shaping groove 321, and when injection mold compound die, two weld legs 2020 inlay respectively in two constant head tanks 322 to realize more accurate location.

As a more preferable aspect, the ejection assembly 35 includes: a guide sleeve 351 and an ejector pin 352, wherein the guide sleeve 351 penetrates through the upper base 31 and is fixedly connected with the forming seat 32, the ejector pin 352 is inserted into the guide sleeve 351 in a vertically movable manner and extends to the top surface of the forming groove 321, and the upper surface of the boss 42, the forming groove 321 and the lower surface of the ejector pin 352 form a die cavity. During injection molding, the lower surface of the thimble 352 is a portion of the mold cavity; after the injection is completed, the injection mold is opened, and the RF terminal 200 is ejected from the molding groove 321 by moving the ejector pin 352 downward.

The above-mentioned embodiments are merely preferred examples of the present invention, and do not limit the scope of the present invention, so all equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.

Claims

1. An injection mold of an RF terminal, the injection mold comprising: cope match-plate pattern, lower bolster, a plurality of mould benevolence and a plurality of lower mould benevolence, the cope match-plate pattern has a plurality of last mould caves that are used for holding the upper mould benevolence, the lower bolster has a plurality of lower mould caves that are used for holding the lower mould benevolence, and a plurality of upper mould cave and a plurality of lower mould cave are just right one by one along the upper and lower direction, its characterized in that: the upper die core and the lower die core are combined to form a die cavity, and the upper die core is provided with a guide mechanism with a position lower than that of the die cavity.

2. The injection mold of an RF terminal according to claim 1, wherein: the upper mold core comprises: the device comprises an upper base body, a forming seat, two first limiting parts, two second limiting parts and an ejection assembly, wherein the forming seat is positioned below the upper base body, the two first limiting parts are respectively positioned on two opposite side surfaces of the forming seat, the two second limiting parts are respectively positioned on the other two opposite side surfaces of the forming seat, the forming seat is provided with a forming groove with a downward opening, the two first limiting parts and the two second limiting parts form a guide mechanism, the bottoms of the two first limiting parts and the two second limiting parts are positioned at positions lower than the forming groove, and the ejection assembly penetrates through the upper base body and extends to the top surface of the forming groove; the lower mould benevolence includes: the injection molding device comprises a lower base body, a boss and an injection molding channel, wherein the boss is located above the lower base body, the injection molding channel extends to the upper surface of the boss from the lower base body, and the upper surface of the boss, a molding groove and the lower surface of an ejection assembly form a mold cavity.

3. The injection mold of an RF terminal of claim 2, wherein: the upper base body, the forming seat, the two first limiting parts and the two second limiting parts are arranged in a split mode.

4. An injection mold for an RF terminal according to claim 3, wherein: the two first limiting parts are respectively embedded in two opposite side surfaces of the forming seat, and the two second limiting parts are respectively embedded in the other two opposite side surfaces of the forming seat.

5. The injection mold of an RF terminal according to claim 2, wherein: the bottom of the first limiting piece is provided with a notch.

6. The injection mold of an RF terminal according to claim 2, wherein: the second locating parts are provided with guide inclined planes, and the distance between the guide inclined planes of the two second locating parts is gradually increased from top to bottom.

7. The injection mold of an RF terminal according to claim 2, wherein: the forming base is also provided with two positioning grooves, one positioning groove is positioned between the forming groove and one second limiting piece, the other positioning groove is positioned between the forming groove and the other second limiting piece, and the top surfaces of the positioning grooves are positioned at positions lower than the top surface of the forming groove.

8. The injection mold of an RF terminal according to claim 2, wherein: the ejection assembly includes: the guide sleeve penetrates through the upper base body and is fixedly connected with the forming seat, the ejector pin can be inserted into the guide sleeve in a vertically moving mode and extends to the top surface of the forming groove, and the upper surface of the boss, the forming groove and the lower surface of the ejector pin form a die cavity.