Inclined insertion hole type mold

Abstract

The utility model provides an inclined insertion hole type mold, and belongs to the technical field of injection molds. Comprising a lower die base, a limiting plate and an upper die base, the upper die base comprises a top plate and a guide plate which are vertically distributed, the top plate and the guide plate are movably connected through a spring, and a plurality of guide grooves distributed in an annular array are formed in the position, close to the center, of the guide plate; and the top needle bodies of the mold needles are in matched sliding connection with the sliding grooves, the middle section needle bodies of the mold needles are in matched bell and spigot joint with the guide grooves, and the bottom end needle bodies of the mold needles are in matched bell and spigot joint with the insert bushes. According to the utility model, the mold needle is movably arranged on the upper mold base and is matched with the limiting of the guide groove, so that the mold needle is bounced off along the axis of the bushing to be separated from the injection molding cavity when the mold is demolded, and the problem that the micro tail end of the mold needle is broken off due to the fact that an inclined hole of a finished product blocks the mold needle when the mold is demolded and is in a vertical demolding state is avoided; therefore, the mold can be smoothly demolded.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an oblique plug-in type mold. Background Art

[0002] Fiber ferrule is a component used to fix optical fiber in fiber optic connector and is usually used together with fiber pigtail.

[0003] In the prior art, some fiber optic ferrules adopt an angled hole design, such as the APC (Angled Physical Contact) grinding method, in which the fiber end face is ground into an 8° bevel, which is suitable for occasions requiring high-precision connection and low loss, such as high-speed data transmission, data centers, telecommunications networks, etc. The bevel design of the angled hole ferrule helps to connect the fiber end faces more closely and reduce the reflection and loss of optical signals. The APC grinding method allows the optical signal to be reflected to the cladding through the bevel angle instead of directly returning to the light source, providing better connection performance.

[0004] However, during the injection molding process, the inner diameter of the inclined hole core is very small, and the inner hole and outer diameter are inclined and not concentric, which causes the micro needle to break easily during demoulding. Therefore, the present application provides an inclined hole mold to meet the demand. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an inclined hole type mold to solve the problem that in the existing inclined hole core injection molding production process, the inner hole diameter is small, the inner hole and the outer diameter are inclined and not concentric, resulting in the micro needle being easily broken during demoulding.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A slanted plug-in type mold comprises a base, a base is movably connected to the middle position of the top, and a plurality of ejectors distributed in a circular array are arranged on the top of the base; a lower mold base is fixedly connected to the top of the base through a support base, the lower mold base comprises a template and a bottom plate distributed up and down, a limit plate is arranged at the center position of the template, and an insert sleeve distributed in a circular array is arranged on the limit plate; an upper mold base is movably connected to the top of the lower mold base through a guide rod, the upper mold base comprises a top plate and a guide plate distributed up and down, the top plate and the guide plate are movably connected through a spring, a mounting groove is opened at the center position of the top of the top plate for mounting the top seat, a plurality of sliding grooves distributed in a circular array are opened on the bottom wall of the mounting groove, a circular groove is opened at the bottom of the top seat, and a plurality of guide grooves distributed in a circular array are opened near the center position of the guide plate; a plurality of mold pins are provided, a slider is arranged at the top of the mold pin, a needle body at the top of the mold pin is slidably connected with the sliding groove, the slider is located inside the top seat at the top of the guide groove, a needle body in the middle section of the mold pin is connected with the guide groove in a socket-and-socket manner, and a needle body at the bottom of the mold pin is connected with the insert sleeve in a socket-and-socket manner.

[0008] Preferably, two support seats are provided and are disposed at two sides of the base, and a threaded groove is provided at the bottom of the base.

[0009] Preferably, a telescopic rod for linear guidance is provided between the base and the lower mold base.

[0010] Preferably, a cavity for injection molding is provided between the template and the limiting plate, and the template is provided with a plurality of slots distributed in a ring array for installing the insert sleeve, and an obliquely arranged guide pin groove is provided inside the insert sleeve and communicated with the cavity.

[0011] Preferably, the bottom plate is provided with a plurality of through grooves distributed in a circular array for cooperating with the ejector pins for sliding connection.

[0012] Preferably, four springs are provided and distributed in a rectangular array at four positions near the corners between the top plate and the guide plate.

[0013] Preferably, the sliding groove is a waist-shaped groove structure, and the width of the side wall of the sliding groove is equivalent to the diameter of the needle body.

[0014] Preferably, the width of the sliding block is greater than the width of the side wall of the sliding groove.

[0015] Preferably, the guide groove is an inclined cylindrical groove structure, and is arranged to be coaxially distributed with the guide needle groove inside the insert sleeve when the upper die seat is in close contact with the lower die seat.

[0016] Preferably, a certain inclination angle is provided at the top of the sliding groove wall, and the inclination line is perpendicular to the axis of the guide groove.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] In the above scheme, by movably setting the mold pin on the upper mold base and cooperating with the limiting of the guide groove, the mold pin can be bounced off the injection cavity along the axis of the sleeve when the mold is demolded, thereby avoiding the situation where the oblique hole of the finished product blocks the mold pin when the mold is demolded in the vertical demolding state, causing the tiny end of the mold pin to break, thereby ensuring that the mold can be demolded smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a cross-sectional schematic diagram of the internal structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the upper die base of the utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the lower die base of the utility model;

[0024] Figure 5 This is a cross-sectional view of the overall structure of the utility model;

[0025] Figure 6 for Figure 5 A magnified image of area A.

[0026] In the figure: 1. base; 2. pedestal; 21. ejector pin; 3. support seat; 4. lower die seat; 41. bottom plate; 42. template; 421. limit plate; 422. slot; 5. upper die seat; 51. top plate; 511. sliding slot; 512. mounting slot; 52. guide plate; 521. guide slot; 53. ejector seat; 531. annular slot; 6. spring; 7. mold pin; 71. slider; 8. sleeve.

[0027] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0028] The following is a detailed description of an oblique plug-in type mold provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some known technologies, those skilled in the art may also adopt other alternative methods to implement them; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0029] like Figure 1 - Figure 6As shown, the embodiment of the utility model provides an oblique socket-type mold, including a base 1, a base 2 is movably connected to the middle position of the top, and a plurality of ejector pins 21 distributed in a circular array are arranged on the top of the base 2; a lower mold base 4 is fixedly connected to the top of the base 1 through a support base 3, and the lower mold base 4 includes a template 42 and a bottom plate 41 distributed in an upper and lower manner, and a limit plate 421 is provided at the center position of the template 42, and a sleeve 8 distributed in a circular array is arranged on the limit plate 421; an upper mold base 5 is movably connected to the upper part of the lower mold base 4 through a guide rod, and the upper mold base 5 includes a top plate 51 and a guide plate 52 distributed in an upper and lower manner, and the top plate 51 and the guide plate 52 are movable by a spring 6 Connection, a mounting groove 512 is provided at the center position of the top of the top plate 51 for installing the top seat 53, a plurality of sliding grooves 511 distributed in a circular array are provided on the bottom wall of the mounting groove 512, a circular groove 531 is provided at the bottom of the top seat 53, and a plurality of guide grooves 521 distributed in a circular array are provided at the center position of the guide plate 52; a plurality of mold needles 7 are provided, a slider 71 is provided at the top of the mold needle 7, the top needle body of the mold needle 7 is slidably connected with the sliding groove 511, the slider 71 is located inside the top seat 53 at the top of the guide groove 521, the middle needle body of the mold needle 7 is connected with the guide groove 521 in a socket connection, and the bottom needle body of the mold needle 7 is connected with the insert sleeve 8 in a socket connection.

[0030] By movably setting the mold pin 7 on the upper mold base 5 and cooperating with the limiting function of the guide groove 521, the mold pin 7 can be bounced off the injection cavity along the axis of the insert sleeve 8 when the mold is demolded, thereby avoiding the finished product blocking the mold pin 7 when the mold is demolded in a vertical demolding state, causing the fine end of the mold pin 7 to break, thereby ensuring that the mold can be demolded smoothly.

[0031] like Figure 2 As shown, two support seats 3 are provided and are respectively arranged at two sides of the base 2 , and a threaded groove is provided at the bottom of the base 2 ; a telescopic rod for linear guidance is provided between the base 2 and the lower mold base 4 .

[0032] Through this arrangement, in cooperation with the driving motor arranged on the base 1, the threaded rod threadedly connected to the thread groove is driven, so that the base 2 rises linearly under the limiting action of the telescopic rod, thereby driving the ejector pin 21 to move up and push the finished product to assist demoulding.

[0033] like Figure 4 As shown, a cavity for injection molding is provided between the template 42 and the limiting plate 421, and a plurality of card slots 422 distributed in a ring array are provided on the template 42 for installing the insert sleeve 8. An obliquely arranged guide needle groove is provided inside the insert sleeve 8 and is connected to the cavity, wherein the card slot 422 is arranged in an inclined shape and a waist-shaped groove is provided on the top, and a waist-shaped card block that cooperates with the waist-shaped groove is provided on the top of the insert sleeve 8 to ensure that when the insert sleeve 8 is installed, the obliquely arranged guide needle groove inside the insert sleeve 8 is in the correct direction.

[0034] By setting the insert sleeve 8, when the mold needle 7 is pressed down to assist in shaping the finished product, it slides with the outer wall of the needle body of the mold needle 7, avoiding the pointed end of the mold needle 7 from directly contacting the mold during the pressing process, thereby playing a protective role for the mold needle 7. In addition, through the setting of the insert sleeve 8, it plays an auxiliary supporting role for the needle body at the end of the mold needle 7, further ensuring the accuracy of the oblique hole of the injection molded product.

[0035] like Figure 2 As shown, the bottom plate 41 is provided with a plurality of through grooves distributed in a circular array for sliding connection with the ejector pins 21 .

[0036] After the mold is assembled, part of the ejector pin 21 is always in the through slot, which avoids the problem of needing to calibrate the ejector pin 21 when it is working again after it leaves the through slot.

[0037] like Figure 2 As shown, four springs 6 are provided and distributed in a rectangular array at four positions near the corners between the top plate 51 and the guide plate 52 .

[0038] Among them, a groove for positioning the spring 6 is provided on the guide plate 52, a column for assisting the fixing of the spring 6 is provided inside the groove, and a through groove for installing the spring 6 is provided on the top plate 51. The spring 6 is installed by auxiliary fixation through a baffle fixed with bolts on the top of the through groove. This installation method is simple and convenient for disassembly.

[0039] like Figure 3 As shown, the sliding groove 511 is a waist-shaped groove structure, and the width of the side wall of the sliding groove 511 is equivalent to the diameter of the needle body of the mold needle 7.

[0040] During the demoulding and closing process of the mold, the mold pin 7 slides in a swinging manner inside the sliding groove 511 .

[0041] like Figure 3 As shown, the width of the slider 71 is greater than the width of the side wall of the sliding groove 511 , and the top of the slider 71 is set as an arc surface to reduce the friction resistance between it and the annular groove 531 .

[0042] like Figure 3 As shown, the guide groove 521 is an inclined cylindrical groove structure, and is arranged to be coaxially distributed with the guide needle groove inside the sleeve 8 when the upper mold base 5 and the lower mold base 4 are in close contact, so as to avoid shear force on the needle body of the mold needle 7 and cause the mold needle 7 to break when the mold is closed.

[0043] like Figure 6 As shown, the top of the groove wall of the sliding groove 511 is provided with a certain inclination angle, and the inclination line is perpendicular to the axis of the guide groove 521.

[0044] With this arrangement, the mold pin 7 can still maintain a certain tilt angle when there is no guide groove 521 to limit the position, so that the mold pin 7 can be easily connected to the guide groove 521 when assembling the mold.

[0045] The technical solution provided by the utility model is that in actual use, the two ends of the mold are respectively connected to the fixed end and the output end of the injection molding machine. When the mold is closed, the upper mold base 5 and the lower mold base 4 are close to each other, and the guide plate 52 and the template 42 are first pressed tightly. In the process of the two being close to each other, due to the limiting effect of the guide groove 521 and the guide plate 52 and the top plate 51 abutted by the spring 6 being away from each other, the mold needle 7 protrudes from the bottom of the guide plate 52. The needle body is shorter and can be inserted into the insert sleeve 8 through the width margin of the top of the needle groove obliquely inside the insert sleeve 8. As the upper mold base 5 and the lower mold base 4 are further approached, the force is applied to cause the spring 6 to contract, and the top plate 51 and the guide plate 52 are close to each other. At this time, due to the fixed setting of the guide groove 521, the mold pin 7 slides along the axis of the guide groove 521 and moves downward in a straight line colinear with the axis of the insert sleeve 8. At the same time, the upper needle body of the mold pin 7 slides in a swinging manner inside the sliding groove 511, and the slider 71 slides in a straight line inside the annular groove 531. The injection molding and cooling processes are then carried out. Finally, when demolding, due to the elastic force of the spring 6, the top plate 51 and the guide plate 52 are separated first. At the same time, the mold pin 7 is bounced along the axis of the insert sleeve 8 under the limiting action of the guide groove 521, thereby avoiding the linear rise of the mold pin 7 being blocked by the wall of the inclined hole on the finished product. Finally, in conjunction with the rise of the base 2, the ejector pin 21 is driven to push and assist in demolding the finished product.

[0046] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An oblique socket type mold, characterized in that: include: A base (1) is movably connected to a base (2) at the middle of the top, and a plurality of ejector pins (21) distributed in a ring array are provided on the top of the base (2); A lower die base (4) is fixedly connected to the top of the base (1) via a support base (3), the lower die base (4) comprising a template (42) and a bottom plate (41) which are distributed in an upper and lower manner, a limiting plate (421) is provided at the center of the template (42), and the limiting plate (421) is provided with insert sleeves (8) which are distributed in a ring array; An upper die seat (5) is movably connected to the upper part of the lower die seat (4) through a guide rod, the upper die seat (5) comprises a top plate (51) and a guide plate (52) which are distributed in an upper and lower manner, the top plate (51) and the guide plate (52) are movably connected through a spring (6), a mounting groove (512) is provided at the center position of the top of the top plate (51) for mounting the top seat (53), a plurality of sliding grooves (511) distributed in an annular array are provided on the bottom wall of the mounting groove (512), an annular groove (531) is provided at the bottom of the top seat (53), and a plurality of guide grooves (521) distributed in an annular array are provided near the center position of the guide plate (52); A plurality of mold needles (7) are provided, wherein a slider (71) is provided at the top of the mold needle (7), the top needle body of the mold needle (7) is slidably connected with the sliding groove (511), the slider (71) is located inside the top seat (53) at the top of the guide groove (521), the middle needle body of the mold needle (7) is connected with the guide groove (521) by a socket connection, and the bottom needle body of the mold needle (7) is connected with the insert sleeve (8) by a socket connection.

2. The oblique socket mold according to claim 1, characterized in that: The support seats (3) are provided in two pieces and are respectively arranged at two sides of the base (2); a threaded groove is provided at the bottom of the base (2).

3. The oblique socket mold according to claim 1, characterized in that: A telescopic rod for linear guidance is provided between the base (2) and the lower die base (4).

4. The oblique socket mold according to claim 1, characterized in that: A cavity for injection molding is provided between the template (42) and the limiting plate (421); a plurality of slots (422) distributed in a ring array are provided on the template (42) for installing the insert sleeve (8); an obliquely arranged guide pin slot is provided inside the insert sleeve (8) and is communicated with the cavity.

5. The oblique socket type mold according to claim 1, characterized in that: The bottom plate (41) is provided with a plurality of through grooves distributed in a ring array for slidingly connecting with the ejector pin (21).

6. The oblique socket type mold according to claim 1, characterized in that: The springs (6) are provided in four pieces and are distributed in a rectangular array at four positions near the corners between the top plate (51) and the guide plate (52).

7. The oblique socket type mold according to claim 1, characterized in that: The sliding groove (511) is in the form of a waist-shaped groove structure, and the width of the side wall of the sliding groove (511) is equivalent to the diameter of the needle body of the mold needle (7).

8. The oblique socket type mold according to claim 1, characterized in that: The width of the sliding block (71) is greater than the width of the side wall of the sliding groove (511).

9. The oblique socket type mold according to claim 4, characterized in that: The guide groove (521) is an inclined cylindrical groove structure, and is arranged to be coaxially distributed with the guide needle groove inside the insert sleeve (8) when the upper die seat (5) and the lower die seat (4) are in close contact.

10. The oblique socket type mold according to claim 1, characterized in that: The top of the groove wall of the sliding groove (511) is provided with a certain inclination angle, and the inclination line is perpendicular to the axis of the guide groove (521).

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