Injection mold for positioning and forming diaphragm by moving insert
By setting insert perforation and limit seats in the injection mold, the molded diaphragm is positioned using the expansion and contraction characteristics of the insert, and the insert is pushed back when the mold is closed, the positioning difficulties and appearance defects of the prefabricated diaphragm during the injection molding process are solved. The problem is to achieve smooth and consistent effect on the product surface.
Patent Information
- Application Number
- CN202323509487.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2033-12-22
AI Technical Summary
When injection molding the gaming machine handle panel, prefabricated diaphragms are difficult to position, and quality problems and appearance defects are prone to occur, such as burrs, unevenness or slight wrinkles, and scratches of the inserts cause uneven surfaces of the product.
Design an injection mold for movable insert positioning and forming diaphragm. By setting insert perforations and limit seats in the front mold core, the diaphragm positioning is used to utilize the expansion and contraction characteristics of the insert, and the rear mold insert is used when closing the mold. Push back the insert to avoid scratching the insert and ensure a flat surface.
The effective positioning of the molded diaphragm and smooth surface are achieved, which avoids insert scratching problems and improves the surface quality and appearance of the product.
Smart Images
Figure CN222223297U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for positioning and molding a diaphragm with a moving insert. Background Art
[0002] There are multiple button holes on the game console handle panel products, among which there are specified holes. After assembling functional parts such as operating levers, it is necessary to retain the pattern or design of the diaphragm. For this reason, the sides of these specified holes require that the coating depth of the prefabricated molded diaphragm must meet the requirements of the drawings.
[0003] However, when these molded diaphragms with a certain coating depth are used for injection molding of handle panels, the molded diaphragms are not easy to position, and quality problems are prone to occur around the button holes with special requirements.
[0004] If the pin is directly set on the side of the rear mold core, the surface of the product is prone to burrs and scratches, which is not suitable for products with high operating frequency; if the steel insert is directly set on the side of the front mold core, the bottom of the raised steel insert cannot be cleaned or polished, resulting in unevenness or slight wrinkles on the product surface along the raised insert. This is because when the mold is opened, the side of the steel insert is easy to scratch the side of the injection molded product and the diaphragm, resulting in appearance defects.
[0005] Therefore, when using prefabricated molded diaphragms to injection mold panel products with special requirements, how to make the product surface smooth and consistent, avoid scratches on the button holes and the sides of the diaphragm, and position the corresponding moving inserts, is a technical problem that needs to be solved. Utility Model Content
[0006] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.
[0007] The utility model provides an injection mold for a moving insert to position a molding diaphragm, comprising a front mold frame, a rear mold frame, and a front mold core and a rear mold core installed between the front mold frame and the rear mold frame, wherein a cavity for an injection molded product is formed between the front mold core and the rear mold core, a moving insert is arranged in the front mold core, the moving insert is movably connected in the front mold core, and the moving insert is used for positioning a prefabricated molding diaphragm; a rear mold insert is arranged in the rear mold core, the rear mold insert is fixedly connected in the rear mold core, and the moving insert is pushed back when the mold is closed, so that the moving insert is retracted back into the front mold core.
[0008] As a further solution of the utility model: an insert perforation is provided in the front mold core, the insert perforation corresponds to the button hole on the molding diaphragm, and the movable insert can pass through the insert perforation and extend into the injection cavity for a certain length, thereby positioning the molding diaphragm.
[0009] As a further solution of the utility model: the moving insert is provided with a first insert, the first insert is provided with a pin, and the pin is used to limit the extension length of the first insert.
[0010] As a further solution of the utility model: the moving insert is provided with a second insert, and a limiting seat is provided on the second insert, and the limiting seat is used to limit the extension length of the second insert.
[0011] As a further solution of the utility model: the moving insert is also provided with a spring, one end of the spring abuts against the front mold frame, and the other end of the spring abuts against the moving insert.
[0012] As a further solution of the utility model: it also includes an ejection mechanism, which is movably connected to the rear mold frame and is provided with an ejector pin, which passes through the rear mold frame and the rear mold core, so as to eject the injection-molded product.
[0013] As a further solution of the utility model: it also includes a bottom plate, the bottom plate is provided with a square iron, one end of the square iron is fixedly connected to the bottom plate, and the other end thereof is fixedly connected to the rear mold frame.
[0014] As a further solution of the utility model: it also includes a panel, the panel is fixedly connected to the front mold frame, and a heat insulation board is arranged on the other side of the panel, and the heat insulation board is fixedly connected to the panel.
[0015] As a further solution of the utility model: it also includes a pouring system, which is fixedly connected in the panel and is used to inject thermoplastic raw materials into the cavity to form an injection molded product.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] 1. By setting a moving insert that matches the special button hole of the injection molded product in the front mold core, the prefabricated molded diaphragm can be supported and positioned before the mold is closed. After the mold is closed, the moving insert can be pushed back by the rear mold insert in the rear mold core, so that there is no raised steel insert feature to cause the product to tilt when the mold is opened, and the button hole and the side of the diaphragm will not be scratched, which will not affect the surface quality of the product.
[0018] 2. Corresponding insert perforations are also set in the front mold core so that the moving insert can be taken out, so that the front mold core can be smoothly processed and polished uniformly to avoid unevenness or slight wrinkles on the product.
[0019] Therefore, after the above-mentioned improvements, the present application can provide an injection mold for a moving insert to position a molded diaphragm, which can polish the front mold core smoothly to maintain a consistent product surface; the moving insert can also be matched with the hole on the diaphragm to position the diaphragm and prevent the diaphragm from moving; when the mold is closed, the rear mold insert can push the moving insert back, so that the front mold core has no raised insert adhesion, avoiding scratches on the button holes and the sides of the diaphragm, thereby obtaining a good product appearance.
[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 It is a structural schematic diagram of the positioning system of the utility model;
[0024] Figure 3 It is a structural schematic diagram of the motion insert of the utility model;
[0025] Figure 4 It is a cross-sectional schematic diagram of the front mold core and the rear mold core of the utility model;
[0026] Figure 5 It is a structural schematic diagram of the rear mold insert of the utility model;
[0027] Figure 6 It is a structural schematic diagram of the insert perforation of the utility model.
[0028] The reference numerals and names in the figures are as follows:
[0029] 10 front mold frame; 11 rear mold frame; 20 front mold core; 21 insert perforation; 22 moving insert; 23 spring; 24 first insert; 25 pin; 26 second insert; 27 limit seat; 30 rear mold core; 31 rear mold insert; 40 ejector mechanism; 41 ejector pin; 42 bottom plate; 43 square iron; 44 panel; 45 insulation board; 50 pouring system; 60 positioning system; 61 guide column; 62 guide sleeve; 70 molding diaphragm; 71 button hole. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0031] See also Figures 1 to 6 In an embodiment of the utility model, an injection mold for positioning a molding diaphragm with a moving insert comprises a front mold frame 10, a rear mold frame 11, and a front mold core 20 and a rear mold core 30 installed between the front mold frame 10 and the rear mold frame 11, wherein a cavity for an injection molded product is formed between the front mold core 20 and the rear mold core 30, a moving insert 22 is arranged in the front mold core 20, and the moving insert 22 is movably connected in the front mold core 20, and the moving insert 22 is used to position a prefabricated molding diaphragm 70; a rear mold insert 31 is arranged in the rear mold core 30, and the rear mold insert 31 is fixedly connected in the rear mold core 30, and the moving insert 22 is pushed back when the mold is closed, so that the moving insert 22 shrinks back into the front mold core 20.
[0032] Specifically, for some special panel 44 products, such as handle panel 44 products, a plurality of button holes 71 are provided, and some of the holes need to retain the patterns or designs on the diaphragm after the buttons are assembled. In order to form the required patterns during injection molding, it is necessary to set a side with a relatively deep coating depth on the diaphragm. When using these specially designed prefabricated molding diaphragms 70 for injection molding, it is necessary to consider the side coating depth of the corresponding holes and the impact on the injection molded product. Avoid quality problems around the holes of the product, especially no unevenness or wrinkles. At the same time, when the injection mold is opened, the corresponding inserts cannot scratch the surface of the plastic product or the diaphragm to avoid appearance defects.
[0033] Secondly, by setting a moving insert 22 on the front mold core 20, that is, the fixed mold core, and utilizing its characteristics of being able to retract and rebound, the moving insert 22 is used to support and position the molded diaphragm 70 before the mold is closed, so that it can be correctly placed in the injection cavity in the mold. Then, when the mold is closed, the rear mold core 30, that is, the rear mold insert 31 in the movable mold core can penetrate into the injection cavity, forming a certain degree of extrusion on the moving insert 22, thereby pushing back the moving insert 22 and making it retract into the front mold core 20, thereby enabling the molded diaphragm 70 to maintain its surface flat and consistent during the injection molding process; it can also prevent the problem of the insert sticking to the diaphragm surface during the mold opening process after the injection molding is completed, thereby improving the surface quality of the injection molded product.
[0034] like Figure 6As shown, preferably, an insert through hole 21 is provided in the front mold core 20, and the insert through hole 21 corresponds to the button hole 71 on the molding diaphragm 70, and the movable insert 22 can pass through the insert through hole 21 and extend into the injection cavity for a certain length, thereby positioning the molding diaphragm 70.
[0035] Specifically, the insert perforations 21 in the front mold core 20 can be set according to the corresponding holes of the product to be injected. Preferably, the corresponding movable insert 22 can be completely retracted into the front mold core 20, and the front mold core 20 can be kept smooth and consistent relative to the inner surface of the injection cavity, so that the injection molding can be better completed and the surface of the diaphragm and the injection molded product will not be scratched.
[0036] like Figure 3 As shown, preferably, the moving insert 22 is provided with a first insert 24, and the first insert 24 is provided with a pin 25, and the pin 25 is used to limit the extension length of the first insert 24. The moving insert 22 is provided with a second insert 26, and the second insert 26 is provided with a limit seat 27, and the limit seat 27 is used to limit the extension length of the second insert 26.
[0037] Specifically, in order to control the length of the moving insert 22 extending into the injection cavity, it is also necessary to set a corresponding pin 25 or a limit seat 27, wherein the first insert 24 can be aimed at a relatively large hole, that is, the diameter of the first insert 24 is relatively large, so a hole can be opened on the insert, and then the pin 25 can be set for limiting operation. Since the second insert 26 is aimed at a relatively small hole, its diameter is relatively small, and it is not convenient to set the pin 25, so a limit seat 27 can be set on its end, and the corresponding limiting effect can also be achieved by using the limit seat 27 that is slightly larger than the second insert 26. It can be understood that in order to achieve the limiting effect of the pin 25 and the limit seat 27, as Figure 6 As shown, it is also necessary to provide a corresponding limiting groove (not shown in the figure) at the insert through hole 21 of the front mold core 20, wherein the limiting groove has a certain depth, so that after the first insert 24 and the second insert 26 extend a certain length into the injection cavity, the pin 25 or the limiting seat 27 is limited in the limiting groove, so that it will not extend further into the cavity.
[0038] like Figure 3 , Figure 4 and Figure 6 As shown, preferably, the moving insert 22 is further provided with a spring 23 , one end of the spring 23 abuts against the front mold frame 10 , and the other end thereof abuts against the moving insert 22 .
[0039] Specifically, in order to allow the moving insert 22 to be pushed back by the rear mold insert 31 after mold closing, a corresponding push-back space can be provided in the limiting groove so that the pushed-back portion of the moving insert 22 can be accommodated in the groove. Before mold closing, in order to allow the moving insert 22 to extend smoothly, a corresponding spring 23 can be provided to use elastic force to eject the moving insert 22 into the cavity of the front mold core 20, and then when the mold is closed, it can be pushed back by the rear mold insert 31 and return to the interior of the front mold core 20. For the convenience of manufacturing, it is preferred to fix the spring 23 on the front mold frame 10 to facilitate assembly and maintenance.
[0040] like Figure 1 and Figure 2 As shown, preferably, it also includes an ejection mechanism 40, which is movably connected to the rear mold frame 11, and the ejection mechanism 40 is provided with an ejector pin 41, and the ejector pin 41 passes through the rear mold frame 11 and the rear mold core 30, so as to eject the injection molded product. It also includes a bottom plate 42, and the bottom plate 42 is provided with a square iron 43, one end of the square iron 43 is fixedly connected to the bottom plate 42, and the other end thereof is fixedly connected to the rear mold frame 11. It also includes a panel 44, and the panel 44 is fixedly connected to the front mold frame 10, and the other side of the panel 44 is provided with a heat insulation board 45, and the heat insulation board 45 is fixedly connected to the panel 44. It also includes a pouring system 50, and the pouring system 50 is fixedly connected in the panel 44, and is used to inject thermoplastic raw materials into the cavity to form an injection molded product.
[0041] Specifically, in order to make a complete injection mold, necessary existing structures in the prior art can also be set up, such as setting up an ejection mechanism 40 to eject the injection molded product; for example, setting up a bottom plate 42, a panel 44 and a heat insulation plate 45, so that the injection mold can be installed on corresponding mechanical equipment; for example, setting up a pouring system 50, which can connect the corresponding injection heat flow from the external equipment and inject it into the injection cavity, together with the molding diaphragm 70 to form the injection molded product to be produced.
[0042] In addition, the injection mold also needs to be provided with a corresponding positioning system 60, for example, the guide pin 61 can be provided on the panel 44, and the guide sleeve 62 can be provided on the rear mold frame 11 and the front mold frame 10, and the guide pin 61 and the guide sleeve 62 can cooperate with each other, so as to perform positioning operations on the corresponding parts of the mold. It can be understood that the injection mold can also be provided with a corresponding cooling system (not shown in the figure) to cool the injection molded product, so that it is shaped and then ejected.
[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.
Claims
1. An injection mold for a moving insert positioning molding diaphragm, characterized in that: The invention comprises a front mold frame (10), a rear mold frame (11), and a front mold core (20) and a rear mold core (30) installed between the front mold frame (10) and the rear mold frame (11); a cavity of an injection molded product is formed between the front mold core (20) and the rear mold core (30); a moving insert (22) is arranged in the front mold core (20); the moving insert (22) is movably connected in the front mold core (20); the moving insert (22) is used to position a prefabricated molding film (70); a rear mold insert (31) is arranged in the rear mold core (30); the rear mold insert (31) is fixedly connected in the rear mold core (30); and when the mold is closed, the moving insert (22) is pushed back so that the moving insert (22) shrinks back into the front mold core (20).
2. The injection mold for a moving insert positioning molding diaphragm according to claim 1, characterized in that: The front mold core (20) is provided with an insert through hole (21), the insert through hole (21) corresponds to the button hole (71) on the molded diaphragm (70), and allows the moving insert (22) to pass through the insert through hole (21) and extend into the injection cavity for a certain length, thereby positioning the molded diaphragm (70).
3. The injection mold for a moving insert positioning molding diaphragm according to claim 2, characterized in that: The moving insert (22) is provided with a first insert (24), and the first insert (24) is provided with a pin (25), and the pin (25) is used to limit the extension length of the first insert (24).
4. The injection mold for a moving insert positioning molding diaphragm according to claim 2, characterized in that: The moving insert (22) is provided with a second insert (26), and a limit seat (27) is provided on the second insert (26), wherein the limit seat (27) is used to limit the extension length of the second insert (26).
5. The injection mold for a moving insert positioning molding diaphragm according to claim 1, characterized in that: The moving insert (22) is also provided with a spring (23), one end of the spring (23) abuts against the front mold frame (10), and the other end of the spring (23) abuts against the moving insert (22).
6. The injection mold for a moving insert positioning molding diaphragm according to claim 1, characterized in that: The mold assembly also includes an ejection mechanism (40), the ejection mechanism (40) being movably connected to the rear mold frame (11), the ejection mechanism (40) being provided with an ejector pin (41), the ejector pin (41) passing through the rear mold frame (11) and the rear mold core (30), thereby ejecting the product after injection molding.
7. The injection mold for a moving insert positioning molding diaphragm according to claim 1, characterized in that: It also comprises a bottom plate (42), the bottom plate (42) being provided with a square iron (43), one end of the square iron (43) being fixedly connected to the bottom plate (42), and the other end of the square iron (43) being fixedly connected to the rear mold frame (11).
8. The injection mold for a moving insert positioning molding diaphragm according to claim 1, characterized in that: It also comprises a panel (44), wherein the panel (44) is fixedly connected to the front mold frame (10), and a heat insulation board (45) is provided on the other side of the panel (44), and the heat insulation board (45) is fixedly connected to the panel (44).
9. The injection mold for a moving insert positioning molding diaphragm according to claim 1, characterized in that: It also includes a pouring system (50), which is fixedly connected to the panel (44) and is used to inject thermoplastic raw materials into the cavity to form an injection-molded product.