Optical fiber mold connecting structure capable of being quickly demolded
By designing a fast-release fiber mold connection structure, the inclination angle of the guide needle is used to guide the needle with components such as elastic sheets and limit blocks, the problem of the needle being easily broken when the finished product of the fiber inclined hole core is removed, and a stable and convenient mold release process is achieved, reducing the difficulty of mass production and extending the mold life.
Patent Information
- Application Number
- CN202421664691.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-15
AI Technical Summary
When the finished product of the inclined hole core for optical fiber is demolded, the fine needle is easily broken, which increases the difficulty of mass production.
By designing a fast-demolding optical fiber mold connection structure, the tilt angle of the guide needle is maintained at 1.35°-1.45° by using components such as elastic sheets, limiting blocks, sealing blocks and outer cylinders, so as to keep the angle between its axis and vertical line at 1.35°-1.45°, which is convenient for mold release.
The stable mold release of the needle is achieved, reducing the difficulty of mass production, avoiding the risk of needle breakage, and extending the service life of the mold.
Smart Images
Figure CN222819446U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical fiber mold connection structures, in particular to a fast demoulding optical fiber mold connection structure. Background Art
[0002] The connection structure of the optical fiber mold mainly involves the assembly and fixation method between the various components of the mold to ensure that the optical fiber can be stably and accurately positioned and processed during the optical fiber manufacturing process.
[0003] Generally, injection molded products are processed by corresponding molds. After an injection molded product is molded and solidified, it is taken out from the mold cavity or core, which is commonly known as demolding. Due to molding shrinkage and other reasons, plastic parts are often tightly wrapped around the core or trapped in the mold cavity, and cannot automatically escape from the mold after the mold is opened. In order to facilitate the injection molded product to be separated from the mold and prevent the surface of the injection molded product from being scratched during demolding, the inner and outer surfaces of the injection molded product must have a reasonable demolding angle along the demolding direction when designing the injection mold.
[0004] The finished product of the oblique hole ferrule for optical fiber has a tiny inner hole diameter, and the inner hole is inclined and not concentric with the outer diameter. When demolding, the fine needle is easy to break, which increases the difficulty of mass production. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a fast demolding optical fiber mold connection structure, which guides the inclination angle of the mold pin through the connection structure so that the angle between the mold pin axis and the vertical line is maintained at 1.35°-1.45°, which is convenient for demolding.
[0006] Technical solution: To achieve the above purpose, the utility model is implemented through the following technical solution: a quick demolding optical fiber mold connection structure, comprising: an elastic sheet, the top of the elastic sheet is connected to the bottom of a ring body, the bottom of the elastic sheet is connected to the side of a mold pin, a placement cavity is provided between the ring body and the elastic sheet, the top of the mold pin is connected to a top block, and the top block is placed in a placement groove.
[0007] A limit block is arranged on the upper part of the mold pin.
[0008] A sealing block, wherein the sealing block is arranged in the middle of the mold needle, the inner wall of the sealing block is connected with a sealing sheet, the bottom of the sealing sheet is connected with a plurality of vertical plates, each of the vertical plates is connected with a horizontal plate, the end of the horizontal plate away from the longitudinal axis of the mold needle is connected to the inner wall of the sealing block, the bottom of the sealing sheet is connected with a support plate, the support plate is arranged in the middle of the sealing sheet, the bottom of the support plate is connected to the top of the horizontal plate through a bottom tube, the bottom end of the mold needle and the side of the middle of the mold needle are connected with a pressure ring.
[0009] Preferably, the bottom of the sealing block is connected to an outer cylinder, the bottom end of the mold pin passes through the limit block and the sealing block in sequence and extends into the outer cylinder, the shape of the outer cylinder is adapted to the mold pin, the side of the bottom of the outer cylinder is connected to a connecting piece through an inclined tube, the bottom of the connecting piece is connected to a straight tube, and the bottom end of the outer cylinder passes through the inclined tube and extends into the straight tube.
[0010] Preferably, the sealing sheet is in a truncated cone shape, and the diameter of the sealing sheet gradually narrows along the longitudinal axis direction of the mold pin.
[0011] Preferably, the diameter of the top of the sealing sheet is greater than the diameter of the bottom of the sealing sheet, and the diameter of the bottom of the sealing sheet is greater than the diameter of the mold pin.
[0012] Preferably, the diameter of the pressure ring is larger than the diameter of the bottom of the sealing sheet, and the pressure ring is driven by the mold needle to approach the middle of the sealing sheet and squeeze the sealing sheet.
[0013] Preferably, the support plate is an arc plate, both ends of which are connected to the side surfaces of the sealing sheet, the two ends of the support plate are located on both sides of the middle section of the sealing sheet, and the vertical line segments from the two ends of the support plate to the middle section are equal.
[0014] Preferably, the inner diameter of the limit block is larger than the diameter of the mold pin.
[0015] Preferably, the plurality of transverse plates are equidistantly distributed in the circumferential direction of the mold pin.
[0016] Preferably, the axis of the outer cylinder, the axis of the cylinder body, the axis of the limit block, the axis of the sealing block and the axis of the inclined tube are all located on the same straight line, and the angle between the axis of the inclined tube and the vertical line is 1.35°-1.45°.
[0017] Preferably, the inner wall of the straight tube is connected with a partition, the bottom of the partition is connected with an injection hole, and the side of the connector is connected with a connecting plate.
[0018] Beneficial effects: The utility model provides a fast demoulding optical fiber mold connection structure. Compared with the prior art, it has the following beneficial effects: 1. When in use, the inclination angle of the mold pin is guided by the connection structure, so that the angle between the mold pin axis and the vertical line is maintained at 1.35°-1.45°, which is convenient for demoulding and reduces the difficulty of mass production.
[0019] 2. The elastic sheet can be made of elastic materials such as rubber, the top of the mold needle can be moved, and the inner diameter of the limit block is larger than the diameter of the mold needle. While retaining a certain amount of activity space for the mold needle, it can also prevent the mold needle from shaking too much and prevent the tip of the mold needle from touching the inner wall of the outer tube, ensuring that the mold needle can smoothly penetrate into the outer tube when it moves down, and the mold needle retains a certain degree of mobility. The mold needle can move along the axial direction of the outer tube, and the axis of the mold needle and the axis of the outer tube are in the same straight line, thereby achieving the purpose of guiding the inclination angle of the mold needle.
[0020] 3. When the angle between the axis of the inclined tube and the vertical line is 1.35°, the inclination angle is small, the product shape is precise, the manufacturing difficulty is low, and materials can be saved. When the angle between the axis of the inclined tube and the vertical line is 1.45°, it is conducive to product demoulding, reduces demoulding resistance, protects product surface, and extends mold life. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, further serve to explain the principles of the present application and enable those skilled in the relevant art to make and use the present application.
[0022] 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 work.
[0023] Figure 1 It is a structural schematic diagram of the utility model.
[0024] Figure 2 It is a front cross-sectional view of the utility model.
[0025] Figure 3 It is a structural schematic diagram of the part where the mold pin connection structure is located.
[0026] Figure 4 for Figure 3 Exploded diagram.
[0027] Figure 5 It is a schematic diagram of the structure of the top block, elastic sheet, and the top of the mold pin.
[0028] Figure 6 It is a schematic diagram of the structure of the sealing sheet, sealing block, and the middle part of the mold pin.
[0029] Figure 7 for Figure 6 Front cross-sectional view of .
[0030] Figure 8 for Figure 6 Exploded view after removing the sealing block and mold pin.
[0031] Fig. 9 It is a front cross-sectional view of the bottom of the mold pin and the part where the connecting piece is located.
[0032] The reference numerals in the figure are: 11 front template, 12 rear template, 21 top block, 22 needle, 23 limit block, 24 sealing block, 25 outer cylinder, 26 straight tube, 27 inclined tube, 28 retaining ring, 3 elastic sheet, 41 sealing sheet, 42 pressure ring, 43 vertical plate, 44 horizontal plate, 45 support plate, 46 bottom cylinder, 51 connecting piece, 52 partition, 53 injection hole, 6 connecting plate, 7 ring body.
[0033] 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
[0034] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0035] The embodiment of the present application provides a fast demoulding optical fiber mold connection structure, which solves the problem that the finished product of the oblique hole ferrule for optical fiber has a small inner hole diameter, and the inner hole is inclined and non-concentric with the outer diameter. When demoulding, the fine needle is easy to break, which increases the difficulty of mass production. When in use, the inclination angle of the needle is guided by the connection structure, so that the angle between the axis of the needle and the vertical line is maintained at 1.35°-1.45°, which is convenient for demoulding.
[0036] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0037] Reference Figure 1 - Fig. 9A fast demoulding optical fiber mold connection structure includes: an elastic sheet 3, the top of the elastic sheet 3 is connected to the bottom of the ring body 7, the bottom of the elastic sheet 3 is connected to the side of the mold pin 22, a placement cavity is set between the ring body 7 and the elastic sheet 3, the top of the mold pin 22 is connected to the top block 21, and the top block 21 is placed in the placement groove. A limit block 23, the limit block 23 is set on the upper part of the mold pin 22. The sealing block 24 is arranged in the middle of the mold needle 22, the inner wall of the sealing block 24 is connected with a sealing sheet 41, the bottom of the sealing sheet 41 is connected with several vertical plates 43, each vertical plate 43 is connected with a horizontal plate 44, the end of the horizontal plate 44 away from the longitudinal axis of the mold needle 22 is connected to the inner wall of the sealing block 24, the bottom of the sealing sheet 41 is connected with a support plate 45, the support plate 45 is arranged in the middle of the sealing sheet 41, the bottom of the support plate 45 is connected to the top of the horizontal plate 44 through a bottom tube 46, the bottom end of the mold needle 22 and the side of the middle of the mold needle 22 are connected with a pressure ring 42.
[0038] The cylinder body, the limiting block 23 , the sealing block 24 and the outer cylinder 25 are all arranged in the front template 11 .
[0039] The top of the mold needle 22 is connected to the ring body 7 through an elastic sheet 3. The elastic sheet 3 can be made of elastic material such as rubber. The top of the mold needle 22 is not fixed. The mold needle 22 can move with the top block 21 as a certain point. The inner diameter of the limit block 23 is larger than the diameter of the mold needle 22. The mold needle 22 can swing in the limit block 23 to reserve a certain amount of activity space for the mold needle 22, but the space is not too large to avoid the mold needle 22 from tilting too much at an angle and to avoid the tip of the mold needle 22 from touching the inner wall of the outer tube 25, thereby ensuring that the mold needle 22 can smoothly penetrate into the outer tube 25 when it moves down. Because the mold needle 22 retains a certain degree of mobility, the mold needle 22 can move along the axial direction of the outer tube 25, and make the axis of the mold needle 22 and the outer tube 25 located in the same straight line, thereby achieving the purpose of guiding the tilt angle of the mold needle 22.
[0040] The bottom of the sealing block 24 is connected to the outer cylinder 25, and the bottom end of the mold needle 22 passes through the limit block 23 and the sealing block 24 in sequence and extends into the outer cylinder 25. The shape of the outer cylinder 25 is adapted to the mold needle 22. The side of the bottom of the outer cylinder 25 is connected to the connecting piece 51 through the inclined tube 27. The bottom of the connecting piece 51 is connected to the straight tube 26. The bottom end of the outer cylinder 25 passes through the inclined tube 27 and extends into the straight tube 26.
[0041] At the beginning, the axis of the mold needle 22 is close to the axis of the outer tube 25. Since the shape of the outer tube 25 is compatible with the mold needle 22, the downward moving mold needle 22 and the outer tube 25 are continuously matched, and the inclination angle of the mold needle 22 is continuously close to the inclination angle of the outer tube 25, and finally the axis of the mold needle 22 coincides with the axis of the outer tube 25.
[0042] The sealing sheet 41 is truncated cone-shaped, and the diameter of the sealing sheet 41 gradually narrows along the longitudinal axis direction of the mold needle 22. The diameter of the top of the sealing sheet 41 is greater than the diameter of the bottom of the sealing sheet 41, and the diameter of the bottom of the sealing sheet 41 is greater than the diameter of the mold needle 22. The diameter of the pressure ring 42 is greater than the diameter of the bottom of the sealing sheet 41. The support plate 45 is an arc plate, and both ends of the support plate 45 are connected to the side of the sealing sheet 41. The two ends of the support plate 45 are located on both sides of the middle section of the sealing sheet 41, and the vertical line segments from the two ends of the support plate 45 to the middle section are equal. The inner diameter of the limit block 23 is greater than the inner diameter of the mold needle. 22, a plurality of transverse plates 44 are equidistantly distributed in the circumferential direction of the mold needle 22, the axis of the outer cylinder 25, the axis of the cylinder body, the axis of the limit block 23, the axis of the sealing block 24, and the axis of the inclined tube 27 are all located in the same straight line, and the angle between the axis of the inclined tube 27 and the vertical line is 1.35°-1.45°, the inner wall of the straight tube 26 is connected with a partition 52, the bottom of the partition 52 is connected with an injection hole 53, the side of the connecting piece 51 is connected with a connecting plate 6, and the pressure ring 42 is driven by the mold needle 22 to approach the middle of the sealing sheet 41 and squeeze the sealing sheet 41.
[0043] Generally, injection molded products are processed by corresponding molds. After a molded product is formed and cured, it is taken out from the mold cavity or core, which is commonly known as demolding. Due to molding shrinkage and other reasons, plastic parts are often tightly wrapped around the core or trapped in the mold cavity, and cannot automatically escape from the mold after the mold is opened. In order to facilitate the injection molded product to be separated from the mold and prevent the surface of the injection molded product from being scratched during demolding, the inner and outer surfaces of the injection molded product must have a reasonable demolding angle along the demolding direction when designing the injection mold.
[0044] The size of the mold release angle of the plastic part is related to the properties of the plastic part, shrinkage rate, friction coefficient, wall thickness and geometric shape of the plastic part. Hard plastics have a larger mold release angle than soft plastics; plastic parts with more complex shapes or more molding holes have a larger mold release angle; plastic parts with greater height and deeper holes have a smaller mold release angle; the mold release angle should also be larger as the wall thickness increases and the force of the inner hole wrapping the core is greater.
[0045] When the angle between the axis of the inclined tube 27 and the vertical line is 1.35°, the inclination angle is small, the product shape is precise, the manufacturing difficulty is low, and materials can be saved.
[0046] When the angle between the axis of the inclined tube 27 and the vertical line is 1.45°, a larger demoulding angle can ensure that the parts are removed from the mold more smoothly during the demoulding process, reducing the risk of jamming or damage to the parts; increasing the demoulding angle helps to reduce the friction between the parts and the mold, thereby reducing mold wear and extending the service life of the mold; an appropriate demoulding angle can reduce the stagnation time in the production process, ensure continuous and efficient production, and improve overall production efficiency; reduce part deformation: in some molding processes, an increase in the demoulding angle helps to reduce the possibility of part deformation during the demoulding process, ensure the quality of the final product, and improve the surface quality of the product.
[0047] When in use, the top of the mold needle 22 is connected to the ring body 7 through the elastic sheet 3. The elastic sheet 3 can be made of elastic material such as rubber. The mold needle 22 can move in a small range by squeezing the elastic sheet 3. The bottom end of the mold needle 22 passes through the limit block 23 and the sealing block 24 in sequence under the pushing action and extends into the outer cylinder 25. After the mold needle 22 passes through the limit block 23, the inner diameter of the limit block 23 is slightly larger than the diameter of the mold needle 22. The mold needle 22 can swing in the limit block 23 to reserve a certain amount of activity space for the mold needle 22, but the space is not too large to avoid the mold needle 22 from tilting too much at an angle and to avoid the tip of the mold needle 22 from touching the inner wall of the outer cylinder 25, so that the mold needle 22 can penetrate into the outer cylinder 25. Because the mold needle 22 retains a certain degree of activity, the mold needle 22 can continuously adapt to the outer cylinder 25 and make the axes of the mold needle 22 and the outer cylinder 25 located in the same straight line, thereby achieving the purpose of guiding the tilt angle of the mold needle 22.
[0048] When the mold needle 22 moves downward, the pressure ring 42 on the side of the mold needle 22 approaches the sealing sheet 41, and the pressure ring 42 and the middle position of the sealing sheet 41 are squeezed against each other. The bottom of the sealing sheet 41 is supported by the support plate 45. Since both ends of the support plate 45 are connected to the side of the sealing sheet 41, the two ends of the support plate 45 are located on both sides of the middle section of the sealing sheet 41, and the vertical line segments from the two ends of the support plate 45 to the middle section are equal, the lower part of the middle position of the sealing sheet 41 is supported, which is convenient for the sealing sheet 41 to be concave downward, and mainly concentrated in the middle position of the sealing sheet 41. The concave sealing sheet 41 fits with the support plate 45, which can not only buffer the pressure of the pressure ring 42, but also avoid the continued concave of the sealing sheet 41, so that the sealing sheet 41 is sealed and connected with the pressure ring 42, thereby improving the sealing performance. Moreover, the concave angle of the sealing sheet 41 is small, which is convenient for the recovery of the sealing sheet 41, and can also avoid excessive extrusion of the sealing sheet 41, thereby extending the service life of the sealing sheet 41.
[0049] 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.
[0050] 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. A fast demoulding optical fiber mold connection structure, characterized in that: include: An elastic sheet (3), the top of the elastic sheet (3) is connected to the bottom of the ring body (7), the bottom of the elastic sheet (3) is connected to the side of the mold pin (22), a placement cavity is provided between the ring body (7) and the elastic sheet (3), the top of the mold pin (22) is connected to a top block (21), and the top block (21) is placed in the placement groove; A limit block (23), wherein the limit block (23) is arranged on the upper part of the mold needle (22); A sealing block (24), wherein the sealing block (24) is arranged in the middle of the mold needle (22), the inner wall of the sealing block (24) is connected to a sealing sheet (41), the bottom of the sealing sheet (41) is connected to a plurality of vertical plates (43), each of the vertical plates (43) is connected to a horizontal plate (44), the end of the horizontal plate (44) away from the longitudinal axis of the mold needle (22) is connected to the inner wall of the sealing block (24), the bottom of the sealing sheet (41) is connected to a support plate (45), the support plate (45) is arranged in the middle of the sealing sheet (41), the bottom of the support plate (45) is connected to the top of the horizontal plate (44) through a bottom tube (46), the bottom end of the mold needle (22), and the side of the middle of the mold needle (22) are connected to a pressure ring (42).
2. The optical fiber mold connection structure with rapid demoulding according to claim 1, characterized in that: The bottom of the sealing block (24) is connected to an outer tube (25), the bottom end of the mold needle (22) passes through the limit block (23) and the sealing block (24) in sequence and extends into the outer tube (25), the shape of the outer tube (25) is adapted to the mold needle (22), the side surface of the bottom of the outer tube (25) is connected to a connecting piece (51) through an inclined tube (27), the bottom of the connecting piece (51) is connected to a straight tube (26), and the bottom end of the outer tube (25) passes through the inclined tube (27) and extends into the straight tube (26).
3. The optical fiber mold connection structure with rapid demoulding according to claim 1, characterized in that: The sealing sheet (41) is in the shape of a truncated cone, and the diameter of the sealing sheet (41) gradually narrows along the longitudinal axis direction of the mold pin (22).
4. The optical fiber mold connection structure with rapid demoulding according to claim 1, characterized in that: The diameter of the top of the sealing sheet (41) is greater than the diameter of the bottom of the sealing sheet (41), and the diameter of the bottom of the sealing sheet (41) is greater than the diameter of the mold pin (22).
5. The optical fiber mold connection structure with rapid demoulding according to claim 1, characterized in that: The diameter of the pressure ring (42) is greater than the diameter of the bottom of the sealing sheet (41). Driven by the mold needle (22), the pressure ring (42) approaches the middle of the sealing sheet (41) and presses the sealing sheet (41).
6. The optical fiber mold connection structure with rapid demoulding according to claim 1, characterized in that: The support plate (45) is an arc plate, both ends of the support plate (45) are connected to the side surfaces of the sealing plate (41), the two ends of the support plate (45) are located on both sides of the middle section of the sealing plate (41), and the vertical line segments from the two ends of the support plate (45) to the middle section are equal.
7. The optical fiber mold connection structure with rapid demoulding according to claim 1, characterized in that: The inner diameter of the limiting block (23) is greater than the diameter of the mold needle (22).
8. The optical fiber mold connection structure with rapid demoulding according to claim 1, characterized in that: The plurality of transverse plates (44) are distributed at equal distances along the circumferential direction of the mold pin (22).
9. The optical fiber mold connection structure with rapid demoulding according to claim 2, characterized in that: The axis of the outer cylinder (25), the axis of the cylinder body, the axis of the limit block (23), the axis of the sealing block (24), and the axis of the inclined tube (27) are all located on the same straight line, and the angle between the axis of the inclined tube (27) and the vertical line is 1.35°-1.45°.
10. The optical fiber mold connection structure with rapid demoulding according to claim 2, characterized in that: The inner wall of the straight tube (26) is connected to a partition (52), the bottom of the partition (52) is connected to an injection hole (53), and the side of the connecting piece (51) is connected to a connecting plate (6).