Toy car injection molding part mold facilitating dry demolding
The design of the limiting column and anti-rotation structure solves the demoulding problem caused by uneven distribution of ejector pins, achieves uniform ejection and stable demoulding of the toy car injection molded parts, and improves the appearance quality.
Patent Information
- Application Number
- CN202423154505.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-20
AI Technical Summary
When the mold for toy car injection molding with easy dry demoulding is demoulded, the ejector pins are unevenly distributed, resulting in excessive ejection force in some parts and insufficient ejection force in other parts, affecting the appearance quality of the injection molded parts.
The combination design of limit columns, anti-rotation structure and ejector pins is adopted. By adjusting the ejector pin layout, uniform ejection force is ensured, ejector pin rotation is prevented, and precise demoulding is achieved.
It achieves uniform demoulding of injection molded parts, improves appearance quality, avoids top whitening, top bulging or top penetration, and ensures the integrity of injection molded parts.
Smart Images
Figure CN223456420U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to injection molding part mould technical field, concretely is a kind of toy car injection molding part mould of easy dry demoulding. BACKGROUND
[0002] The toy car injection molding part mould of easy dry demoulding is usually composed of upper mould, lower mould, base and the like. The upper mould and the lower mould cooperate with each other to form the cavity of the toy car injection molding part, and the base is used to support the lower mould and provide a mounting base for other components of the mould.
[0003] The demoulding structure of the toy car injection molding part mould of easy dry demoulding is in the form of ejector pin demoulding, and an ejector pin is arranged on the movable die part of the mould. After injection molding is completed, the movable die is retracted, and the ejector pin ejects the injection molding part from the core under the action of the ejection structure, thereby achieving demoulding.
[0004] The complex structure of the toy car injection molding part, such as multiple small protrusions, recesses or internal cavities, cannot be placed at positions that will damage the interior details in the toy car injection molding part with fine interior trim structure. As a result, the ejector pins are unevenly distributed, and the toy car injection molding part mould of easy dry demoulding has excessive ejection force at some positions and insufficient ejection force at other positions when demoulding, which may cause phenomena such as white spots, protrusions or penetrations on the surface of the injection molding part, thereby affecting the appearance quality of the toy car.
[0005] Therefore, the toy car injection molding part mould of easy dry demoulding is proposed to solve the above problems. SUMMARY
[0006] The utility model aims to provide a toy car injection molding part mould of easy dry demoulding to solve the problem of uneven distribution of ejector pins, excessive ejection force at some positions and insufficient ejection force at other positions when demoulding the toy car injection molding part mould of easy dry demoulding, which may cause phenomena such as white spots, protrusions or penetrations on the surface of the injection molding part, thereby affecting the appearance quality of the toy car.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:
[0008] The utility model provides a toy car injection mould of dry demoulding, including feeding device, control device and mould, the upper end fixedly connected with control device of feeding device, one side of control device fixedly connected with mould, the side fixedly connected with ejector assembly of control device close to mould, the one end fixedly connected with push plate of ejector assembly close to mould, the push plate includes push plate main part, the side fixedly connected with head and tail thimble plate of push plate main part close to mould, the side fixedly connected with middle thimble plate of push plate main part close to mould, the side fixedly connected with limit post of middle thimble plate close to mould, the inside fixedly connected with spring of limit post, the other end fixedly connected with anti -rotation structure of spring, the inside installation of anti -rotation structure has thimble, the keyway is seted up in the inside of hollow column, the screw column is spirally connected with the upper end of hollow column, the one end fixedly connected with mounting plate of screw column, the one end fixedly connected with limit board of hollow column close to spring, the inside sliding connection of limit post, the thimble includes thimble main part, the one end fixedly connected with positioning ring of thimble main part close to hollow column, the one end fixedly connected with limit block of thimble main part close to hollow column.
[0009] As the further optimization of the utility model, the head and tail thimble plate is provided in two sections, the middle thimble plate is arranged between the head and tail thimble plates, the lengths of the head and tail thimble plates and the middle thimble plate are different, and the head and tail thimble plates and the middle thimble plate are parallel to each other.
[0010] As the further optimization of the utility model, the limit post, the anti-rotation structure, and the thimble are provided in a plurality of sets, the center points of the limit post, the anti-rotation structure, and the thimble are located on the same horizontal line, and the limit post, the anti-rotation structure, and the thimble are evenly and equidistantly distributed on one side of the head and tail thimble plate and the middle thimble plate.
[0011] As the further optimization of the utility model, the inside of the one end of the hollow column close to the mounting plate is provided with a thread, the mounting plate and the screw column are hollow, the screw column is installed at the one end of the hollow column provided with the thread, the positioning ring is installed at the connection between the one end of the screw column and the hollow column provided with the thread, and the diameter of the screw column is equal to the diameter of the positioning ring.
[0012] As the further optimization of the utility model, the keyway is provided in two sets, the keyway is symmetrically arranged on the inside of the hollow column with the center line of the hollow column as the symmetry axis, the keyway is provided in a semicircular shape, the keyway is parallel to each other, and the keyway is engaged with the limit block.
[0013] As the further optimization of the utility model, the limit block is provided in two sets, the limit block is provided in a semicircular shape, the limit block is arranged on the side of the positioning ring close to the hollow column, and the limit block is symmetrically arranged with the center line of the thimble main part as the symmetry axis.
[0014] As the further optimization of the utility model, wherein: the top pin body one end passes through threaded column and mounting plate, the top pin body is perpendicular to the limiting plate, the top pin body one end passes through the mold.
[0015] Compared with the prior art, the utility model has the advantages that:
[0016] In the utility model, through the rotation of the mounting plate and the threaded column, the layout distribution of the ejector pin can be adjusted, the fine demolding of each part of the injection molding part is facilitated, the appearance quality of the toy car is ensured, the limiting block prevents the rotation of the ejector pin during the ejection process, the stability of the axial ejection of the ejector pin is ensured, and the demolding quality of the injection molding part is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the overall structure schematic diagram of the utility model;
[0018] Figure 2 It is the installation position structure schematic diagram of the utility model pop-out assembly;
[0019] Figure 3 It is the overall structure schematic diagram of the utility model push plate;
[0020] Figure 4 It is the overall structure schematic diagram of the utility model middle ejector plate;
[0021] Figure 5 It is the limiting column section structure schematic diagram of the utility model;
[0022] Figure 6 It is the hollow column section structure schematic diagram of the utility model;
[0023] Figure 7 It is the overall structure schematic diagram of the utility model ejector pin.
[0024] In the drawing: 1, feeding device; 2, control device; 3, mold; 4, pop-out assembly;
[0025] 5, push plate; 51, push plate body; 52, head and tail ejector plate; 53, middle ejector plate; 54, limiting column; 55, anti-rotation structure; 551, hollow column; 552, key groove; 553, mounting plate; 554, threaded column; 555, limiting plate; 56, ejector pin; 561, ejector pin body; 562, positioning ring; 563, limiting block; 57, spring. DETAILED DESCRIPTION
[0026] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0027] It is to be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combination thereof.
[0028] Please refer to Figures 1-7 The present application provides a technical solution:
[0029] The toy car injection molding mold of the application has the advantages that the push plate is fixedly connected with the ejecting assembly, the ejecting assembly is fixedly connected with the control device, the control device is fixedly connected with the mold, the push plate is provided with the head-tail ejector plate, the middle ejector plate and the limiting column, the limiting column is provided with the spring, the spring is provided with the anti-rotation structure, the anti-rotation structure is provided with the ejector pin, the anti-rotation structure is provided with the hollow column, the hollow column is provided with the key groove, the hollow column is provided with the threaded column, the threaded column is provided with the mounting plate, the hollow column is provided with the limiting plate, the limiting plate is slidably connected with the limiting column, the ejector pin is provided with the ejector pin main body, the ejector pin main body is provided with the positioning ring, and the ejector pin main body is provided with the limiting block.
[0030] As a further implementation scheme of the above technical solution: a plurality of limiting posts 54, anti-rotation structures 55 and ejector pins 56 are provided, and the center points of the limiting posts 54, anti-rotation structures 55 and ejector pins 56 are located on the same horizontal line. The limiting posts 54, anti-rotation structures 55 and ejector pins 56 are evenly and equidistantly distributed on one side of the head and tail ejector plates 52 and the middle ejector plate 53. The limiting posts 54 provide guidance and support for the anti-rotation structures 55 and ejector pins 56, ensuring that the ejector pins 56 move in a straight line during the ejection process, thereby improving the ejection accuracy and stability.
[0031] As a further implementation scheme of the above technical solution: the head and tail ejector plates 52 are arranged in two sections, and a middle ejector plate 53 is arranged between the head and tail ejector plates 52. The head and tail ejector plates 52 and the middle ejector plate 53 have different lengths and are parallel to each other. This can simultaneously apply ejection force to the precise parts of the injection molded part, thereby achieving overall coordinated demolding and avoiding damage to the injection molded part caused by poor local demolding.
[0032] As a further implementation of the above technical solution: two key slots 552 are provided, and the key slots 552 are symmetrically arranged on the inner side of the hollow column 551 about the midline of the hollow column 551. The key slots 552 are arranged in a semicircular shape and are parallel to each other. The key slots 552 are engaged with the limit blocks 563, and the key slots 552 are engaged with the limit blocks 563 of the ejector pin 56 to prevent the ejector pin 56 from rotating during the ejection process.
[0033] As a further implementation of the above technical solution: by setting one end of the ejector body 561 to pass through the threaded column 554 and the mounting plate 553, the ejector body 561 is perpendicular to the limit plate 555, and one end of the ejector body 561 passes through the mold 3. This arrangement can make the overall structure more reasonable and facilitate the demolding of the injection molded part;
[0034] As a further implementation scheme of the above technical solution: two limit blocks 563 are provided. The limit blocks 563 are semicircular in shape and are arranged on the side of the positioning ring 562 close to the hollow column 551. The limit blocks 563 are symmetrically arranged about the midline of the ejector body 561. The limit blocks 563 can prevent the ejector 56 from rotating during the ejection process, thereby ensuring the stability of the axial ejection of the ejector 56 and the demolding quality of the injection molded part.
[0035] As a further implementation of the above technical solutions: the hollow column 551 is provided with a thread on the inner side of one end of the mounting plate 553, the mounting plate 553 and the threaded column 554 are hollow, the threaded column 554 is installed at the threaded end of the hollow column 551, the positioning ring 562 is installed at the threaded end of the threaded column 554 and the threaded end of the hollow column 551, the diameter of the threaded column 554 is equal to the diameter of the positioning ring 562, and the mounting plate 553 and the threaded column 554 are convenient for mounting and replacing the ejector pin 56.
[0036] Workflow: Through external wire energization operation, the feeding device 1 is responsible for conveying the plastic raw material into the mold 3, the control device 2 starts the feeding device 1, the plastic raw material is injected into the cavity of the mold 3 through the pipeline conveying system, the plastic injected into the mold 3 starts to cool, when the injection molding part cools to a certain extent, the control device 2 starts the ejection assembly 4, the ejection assembly 4 starts to work, the push plate 5 moves to the direction of the mold 3 to prepare for demolding, the head and tail ejector plate 52 and the middle ejector plate 53 drive the precise parts of the injection molding part to exert the ejecting force under the push of the push plate main body 51, the head and tail ejector plate 52 and the middle ejector plate 53 move to the mold 3 along with the movement of the push plate main body 51, the ejector pin 56 is constrained by the anti-rotation structure 55 and ejects the injection molding part along the direction of the limiting column 54, at the same time, the spring 57 is compressed in the limiting column 54 and stores energy, the spring 57 can play the role of buffering and auxiliary ejection, ensuring uniform ejection force, the positioning ring 562 and the limiting block 563 of the ejector pin 56 cooperate with the anti-rotation structure 55 to ensure the stable ejection of the ejector pin 56, after the injection molding part is demolded, the ejection assembly 4 drives the push plate 5 to reset and return to the initial position, waiting for the next injection molding cycle, if it is necessary to install and adjust the layout of the ejector pin 56, the ejector pin 56 is installed into the anti-rotation structure 55, the one end of the ejector pin main body 561 passes through the threaded column 554 and the mounting plate 553, and the limiting block 563 is clamped with the key groove 552, so that the cooperation of the key groove 552 and the limiting block 563 can prevent the rotation of the ejector pin 56 during the movement of the ejector pin 56, ensuring the stability of the axial ejection, at the same time, the positioning ring 562 is installed at the threaded end of the threaded column 554 and the threaded end of the hollow column 551, and the diameter of the threaded column 554 is equal to the diameter of the positioning ring 562, ensuring the accurate positioning of the ejector pin 56 in the axial direction, then the threaded column 554 is screwed into the one end of the hollow column 551 by rotating the threaded column 554 and the mounting plate 553, effectively fixing the ejector pin 56.
[0037] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A toy vehicle injection molded part mold that is easy to demold, comprising a feeding device (1), a control device (2) and a mold (3), characterized in that: The upper end of the feeding device (1) is fixedly connected with a control device (2), one side of the control device (2) is fixedly connected with a mold (3), the side close to the mold (3) of the control device (2) is fixedly connected with a pop-up assembly (4), and one end close to the mold (3) of the pop-up assembly (4) is fixedly connected with a push plate (5). The push plate (5) comprises a push plate body (51), a head-tail thimble plate (52) is fixedly connected to the side close to the mold (3) of the push plate body (51), a middle thimble plate (53) is fixedly connected to the side close to the mold (3) of the push plate body (51), a limiting column (54) is fixedly connected to the side close to the mold (3) of the middle thimble plate (53), a spring (57) is fixedly connected to the inner side of the limiting column (54), an anti-rotation structure (55) is fixedly connected to the other end of the spring (57), and a thimble (56) is installed in the inner side of the anti-rotation structure (55). The anti-rotation structure (55) comprises a hollow column (551), a key groove (552) is formed in the inner side of the hollow column (551), a threaded column (554) is screw-connected to the upper end of the hollow column (551), an installation plate (553) is fixedly connected to one end of the threaded column (554), a limiting plate (555) is fixedly connected to one end of the hollow column (551) close to the spring (57), the limiting plate (555) is slidingly connected to the inner side of the limiting column (54), and the thimble (56) comprises a thimble body (561), a positioning ring (562) is fixedly connected to one end of the thimble body (561) close to the hollow column (551), and a limiting block (563) is fixedly connected to one end of the thimble body (561) close to the hollow column (551).
2. A toy vehicle injection molded part mold that dries and demolds according to claim 1, characterized in that: The head-tail thimble plate (52) is provided in two sections, the middle thimble plate (53) is arranged between the head-tail thimble plate (52), the lengths of the head-tail thimble plate (52) and the middle thimble plate (53) are different, and the head-tail thimble plate (52) and the middle thimble plate (53) are parallel to each other.
3. A toy vehicle injection molded part mold that dries and demolds according to claim 1, characterized in that: The limiting column (54), the anti-rotation structure (55) and the thimble (56) are provided in plurality, the center points of the limiting column (54), the anti-rotation structure (55) and the thimble (56) are located on the same horizontal line, and the limiting column (54), the anti-rotation structure (55) and the thimble (56) are evenly and equidistantly distributed on one side of the head-tail thimble plate (52) and the middle thimble plate (53).
4. A toy vehicle injection molded part mold that dries and demolds according to claim 1, characterized in that: The inner side of one end of the hollow column (551) close to the installation plate (553) is provided with threads, the installation plate (553) and the threaded column (554) are hollow, the threaded column (554) is installed at the end of the hollow column (551) provided with threads, the positioning ring (562) is installed at the connection between one end of the threaded column (554) and the hollow column (551) provided with threads, and the diameter of the threaded column (554) is equal to the diameter of the positioning ring (562).
5. A toy vehicle injection molded part mold that dries and demolds according to claim 1, characterized in that: The keyway (552) is provided with two, the keyway (552) is symmetrically arranged in the inside of the hollow column (551) with the center line of the hollow column (551), the shape of the keyway (552) is semicircular, the keyway (552) is parallel to each other, the keyway (552) is engaged with the limiting block (563).
6. A toy vehicle injection molded part mold that dries and demolds according to claim 1, characterized in that: The limiting block (563) is provided with two, the shape of the limiting block (563) is semicircular, the limiting block (563) is arranged on the side of the positioning ring (562) close to the hollow column (551), the limiting block (563) is symmetrically arranged with the center line of the thimble body (561).
7. A toy vehicle injection molded part mold that dries and demolds according to claim 1, wherein: One end of the thimble body (561) passes through the threaded column (554) and the mounting plate (553), the thimble body (561) is perpendicular to the limiting plate (555), one end of the thimble body (561) passes through the mold (3).