Plastic part shaping tool

By designing a plastic part shaping fixture that includes a shaping component, a guiding component, a lifting component, and a transmission component, the problem of difficult demolding of plastic parts after cooling is solved, and a convenient plastic part unloading process is achieved, avoiding damage.

CN224130372UActive Publication Date: 2026-04-17BEIJING UNIDE RAILWAY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING UNIDE RAILWAY TECH CO LTD
Filing Date
2025-05-23
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

The cooled plastic parts fit tightly to the inside of the molding fixture, making demolding difficult, time-consuming, labor-intensive, and prone to damage.

Method used

Design a plastic part shaping fixture that includes a shaping component, a guiding component, a lifting component, a transmission component, and an ejection component. Through the cooperation of the lifting component and the transmission component, the plastic part can be slowly ejected to avoid damage.

Benefits of technology

It enables convenient demolding of plastic parts, reduces manual operation time, and avoids damage to plastic parts during the material cutting process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a shaping tool for a plastic part, and relates to the technical field of plastic part processing. The device comprises a mounting frame, a shaping assembly, a guide assembly, a lifting assembly, a transmission assembly and an ejection assembly are arranged on the mounting frame; the interior of the shaping assembly and the interior of the mounting frame are mounted in a sliding manner, so that the plastic part is cooled and shaped by the shaping assembly; one end of the guide assembly is fixedly mounted with the top end of the shaping assembly, so that the guide assembly guides the moving direction of the shaping assembly; the lifting assembly is started to drive the shaping assembly installed at the output end to move upwards, and after the shaping assembly ascends by a certain distance, the lifting assembly can be matched with the transmission assembly installed on one side to drive the ejection assembly to move upwards, so that the ejection assembly is driven to move upwards along with continuous movement of the transmission assembly. And the cooled plastic part in the shaping assembly can be slowly ejected out, so that the plastic part is conveniently discharged, and the plastic part is prevented from being damaged in the discharging process.
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Description

Technical Field

[0001] This utility model belongs to the field of plastic parts processing technology, and more specifically, it relates to a shaping tooling for plastic parts. Background Technology

[0002] Plastic parts are industrial products made from synthetic resins through molding processes such as injection molding, extrusion, and blow molding. They are lightweight, corrosion-resistant, and offer high design freedom, and are widely used in the automotive, electronics, packaging, and medical fields.

[0003] In existing technologies, molding plastic parts are typically cooled and shaped using a molding fixture to prevent deformation during the cooling process. This requires the molding fixture to restrict the plastic parts during cooling. However, the cooled plastic parts tend to adhere tightly to the inside of the molding fixture, making demolding difficult. Tools are needed to remove the plastic parts from the molding fixture, which is time-consuming, labor-intensive, and can easily damage the plastic parts. Utility Model Content

[0004] To address the problem that cooled plastic parts tend to adhere tightly to the interior of the molding fixture, making demolding difficult and requiring tools to remove them—a time-consuming and laborious process that can easily damage the parts—this invention proposes a molding fixture for plastic parts to overcome the aforementioned technical problems in existing related technologies.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a shaping fixture for plastic parts, including a mounting bracket:

[0007] The mounting frame is respectively equipped with a shaping component, a guiding component, a lifting component, a transmission component, and an ejection component;

[0008] The shaping component is slidably mounted inside the mounting bracket so that the shaping component can cool and shape the plastic part;

[0009] The guide component has one end fixedly installed to the top end of the shaping component, so that the guide component guides the movement direction of the shaping component.

[0010] The lifting component has its output end fixedly installed at the top of the shaping component, so that the lifting component drives the shaping component to open and close.

[0011] The transmission component is fixedly installed on one side of the lifting component, so that the lifting component drives the transmission component to operate.

[0012] The ejector assembly has its outer surface fixedly installed inside the transmission assembly, so that the transmission assembly drives the ejector assembly to eject the shaped plastic part.

[0013] Furthermore, the shaping component includes a lower mold, the interior of which is fixedly installed on the outer surface of the mounting frame, and an upper mold is fitted to the top of the lower mold. Cold water pipes are fixedly installed inside both the upper mold and the lower mold.

[0014] Furthermore, the guiding assembly includes a guide rod and a guide sleeve. The bottom end of the guide rod is fixedly installed with the top end of the lower mold, the outer surface of the guide sleeve is fixedly installed with the inside of the upper mold, and the outer surface of the guide rod is slidably disposed with the inside of the guide sleeve.

[0015] Furthermore, the lifting assembly includes a cylinder, the bottom end of which is fixedly installed with the top end of the mounting frame, and a lifting plate is fixedly installed on the telescopic end of the cylinder. The interior of the lifting plate is slidably disposed with respect to the outer surface of the mounting frame, and the bottom end of the lifting plate is fixedly installed with the top end of the upper mold.

[0016] Furthermore, the transmission assembly includes a fixed frame, one side of which is fixedly installed with one side of the lifting plate. A telescopic rod is fixedly connected to the bottom end of the fixed frame, a connecting rod is fixedly connected to the bottom end of the telescopic rod, and a spring is fixedly connected to the top end of the connecting rod. One end of the spring is fixedly connected to the bottom end of the fixed frame.

[0017] Furthermore, the ejection assembly includes an ejector rod, the outer surface of which is slidably disposed with the interior of the lower mold, the outer surface of which is fixedly installed with the interior of a connecting rod, a connecting plate fixedly installed at the top end of the ejector rod, and an ejector pin fixedly connected to the top end of the connecting plate, the outer surface of which is slidably disposed with the interior of the lower mold.

[0018] Furthermore, a limiting rod is fixedly connected inside the lower mold, and the outer surface of the limiting rod is slidably disposed with the inside of the connecting plate.

[0019] This utility model has the following beneficial effects:

[0020] 1. This utility model activates the lifting assembly, which drives the shaping assembly installed at the output end to move upward. After the shaping assembly rises a certain distance, the lifting assembly, in conjunction with the transmission assembly installed on one side, drives the ejection assembly to move upward. As the transmission assembly continues to move, the cooled plastic part inside the shaping assembly can be slowly ejected, so as to facilitate the unloading of the plastic part and avoid damage to the plastic part during the unloading process.

[0021] 2. This utility model uses a starting cylinder to move a lifting plate installed at the telescopic end. This allows the lifting plate to move the upper mold installed at the bottom away from the lower mold. Simultaneously, the lifting plate can move a fixed frame installed on one side, causing the fixed frame to move the telescopic rod during the movement. At the same time, the fixed frame can stretch the spring fixed at the bottom, causing the spring to move the connecting rod fixed at the bottom. This causes the connecting rod to push the ejector rod installed inside to move, which in turn moves the connecting plate installed at the top. This causes the connecting plate to move the ejector pin fixed at the top, pushing out the plastic part inside the lower mold, facilitating the demolding and unmolding of the cooled plastic part.

[0022] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model from a rear-view perspective;

[0026] Figure 3 This is a structural schematic diagram of the present invention from a downward viewing angle;

[0027] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the local structure at point A;

[0028] Figure 5 This is a schematic diagram of the structure of this utility model from a right-side view.

[0029] Figure 6 For the present utility model Figure 5 An enlarged schematic diagram of the local structure at point B.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. Mounting frame; 2. Shaping assembly; 201. Lower mold; 202. Upper mold; 203. Cold water pipe; 3. Guide assembly; 301. Guide rod; 302. Guide sleeve; 4. Lifting assembly; 401. Cylinder; 402. Lifting plate; 5. Transmission assembly; 501. Fixing frame; 502. Telescopic rod; 503. Connecting rod; 504. Spring; 6. Ejection assembly; 601. Ejector rod; 602. Connecting plate; 603. Ejector pin; 7. Limiting rod. Detailed Implementation

[0032] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0033] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0034] Please see Figures 1-6 As shown, this utility model is a shaping tooling for plastic parts, including a mounting bracket 1:

[0035] The mounting frame 1 is respectively equipped with a shaping component 2, a guiding component 3, a lifting component 4, a transmission component 5, and an ejection component 6;

[0036] The shaping component 2 is slidably installed inside the mounting bracket 1 so that the shaping component 2 can cool and shape the plastic part;

[0037] The guide component 3 is fixedly installed at one end to the top of the shaping component 2 so that the guide component 3 guides the movement direction of the shaping component 2.

[0038] The lifting component 4 has its output end fixedly installed at the top of the shaping component 2, so that the lifting component 4 drives the shaping component 2 to open and close.

[0039] The transmission component 5 is fixedly installed on one side of the lifting component 4, so that the lifting component 4 drives the transmission component 5 to operate.

[0040] The ejector assembly 6 is fixedly installed on its outer surface with the interior of the transmission assembly 5, so that the transmission assembly 5 drives the ejector assembly 6 to eject the shaped plastic part.

[0041] In use, the shaping component 2 is connected to an external cold water supply. The injection-molded plastic part is then placed inside the shaping component 2, and cooling is initiated. After cooling is complete, the lifting component 4 is activated, which moves the shaping component 2 installed at the output end upward. When the shaping component 2 rises a certain distance, the lifting component 4, in conjunction with the transmission component 5 installed on one side, drives the ejector component 6 to move upward. As the transmission component 5 continues to move, the cooled plastic part inside the shaping component 2 is slowly ejected, facilitating the unloading of the plastic part.

[0042] This invention activates the lifting assembly 4, which drives the shaping assembly 2 installed at the output end to move upward. After the shaping assembly 2 rises a certain distance, the lifting assembly 4, in conjunction with the transmission assembly 5 installed on one side, drives the ejection assembly 6 to move upward. As the transmission assembly 5 continues to move, the cooled plastic part inside the shaping assembly 2 can be slowly ejected, so as to facilitate the unloading of the plastic part and avoid damage to the plastic part during the unloading process.

[0043] In one embodiment, the shaping component 2 includes a lower mold 201, the interior of which is fixedly installed on the outer surface of the mounting bracket 1, and an upper mold 202 is fitted to the top of the lower mold 201. Cold water pipes 203 are fixedly installed inside both the upper mold 202 and the lower mold 201.

[0044] By connecting cold water to the cold water pipe 203, cold water can enter the interior of the upper mold 202 and the lower mold 201 through the cold water pipe 203, thereby cooling and shaping the plastic parts inside.

[0045] In one embodiment, the guide assembly 3 includes a guide rod 301 and a guide sleeve 302. The bottom end of the guide rod 301 is fixedly installed with the top end of the lower mold 201, and the outer surface of the guide sleeve 302 is fixedly installed with the interior of the upper mold 202. The outer surface of the guide rod 301 is slidably disposed with the interior of the guide sleeve 302.

[0046] When the upper mold 202 moves downward, it can drive the guide sleeve 302 installed inside it to move, so that the guide sleeve 302 is fitted onto the outer surface of the guide rod 301, thereby facilitating the guidance of the moving position and direction of the upper mold 202 and improving the stability of the upper mold 202 during the movement process.

[0047] In one embodiment, the lifting assembly 4 includes a cylinder 401, the bottom end of which is fixedly installed with the top end of the mounting frame 1, and a lifting plate 402 is fixedly installed on the telescopic end of the cylinder 401. The interior of the lifting plate 402 is slidably disposed with respect to the outer surface of the mounting frame 1, and the bottom end of the lifting plate 402 is fixedly installed with the top end of the upper mold 202.

[0048] By activating the cylinder 401, the lifting plate 402 installed at the telescopic end is moved, so that while the lifting plate 402 moves along the direction of the mounting frame 1, the lifting plate 402 can move the upper mold 202 installed at the bottom end, thereby facilitating the fitting of the upper mold 202 and the lower mold 201, so as to facilitate the all-round cooling and shaping of the plastic part.

[0049] In one embodiment, the transmission assembly 5 includes a fixed frame 501, one side of which is fixedly installed with one side of the upper lifting plate 402. A telescopic rod 502 is fixedly connected to the bottom end of the fixed frame 501, and a connecting rod 503 is fixedly connected to the bottom end of the telescopic rod 502. A spring 504 is fixedly connected to the top end of the connecting rod 503, and one end of the spring 504 is fixedly connected to the bottom end of the fixed frame 501.

[0050] When the lifting plate 402 moves upward, it moves the fixed frame 501 installed on one side, causing the fixed frame 501 to move during its movement. Simultaneously, the fixed frame 501 moves the spring 504 fixed at its bottom, causing the spring 504 to move under tension, which in turn moves the connecting rod 503 fixed at its bottom. This causes the connecting rod 503 to retract the telescopic rod 502 fixed at its top. When the lifting plate 402 moves the fixed frame 501 downward, the fixed frame 501 moves the spring 504 downward, restoring the spring 504 to its normal elastic stress. Simultaneously, the spring 504 pushes the connecting rod 503 downward. As the fixed frame 501 continues to move, it compresses the spring 504, causing the telescopic rod 502 to retract.

[0051] In one embodiment, the ejector assembly 6 includes an ejector rod 601, the outer surface of which is slidably disposed with the interior of the lower mold 201, the outer surface of which is fixedly installed with the interior of the connecting rod 503, a connecting plate 602 fixedly installed at the top end of the ejector rod 601, and an ejector pin 603 fixedly connected to the top end of the connecting plate 602, the outer surface of which is slidably disposed with the interior of the lower mold 201.

[0052] When the connecting rod 503 moves upward, it pushes the internally mounted ejector rod 601 to move, causing the ejector rod 601 to move the top-mounted connecting plate 602. This causes the connecting plate 602 to move the top-fixed ejector pin 603 to eject the plastic part inside the lower mold 201. When the connecting rod 503 moves downward, it causes the ejector pin 603 to move out of the lower mold 201. Because the spring 504 is relatively long, there is still a large distance between the upper mold 202 and the lower mold 201 after the ejector pin 603 moves out of the lower mold 201. This allows the uncooled plastic part to be placed inside the lower mold 201. Then, the upper mold 202 moves downward again to cooperate with the lower mold 201 to cool and shape the plastic part.

[0053] In one embodiment, for the lower mold 201, a limiting rod 7 is fixedly connected inside the lower mold 201, and the outer surface of the limiting rod 7 is slidably disposed with the inside of the connecting plate 602.

[0054] When the connecting plate 602 moves along with the top rod 601, it can move along the direction of the internally slidable limiting rod 7, thereby limiting the direction of movement of the connecting plate 602 and improving the stability of the connecting plate 602 during movement.

[0055] Through the above technical solution, 1. By activating the lifting component 4, the shaping component 2 installed at the output end is driven to move upward. After the shaping component 2 rises a certain distance, the lifting component 4, in conjunction with the transmission component 5 installed on one side, drives the ejection component 6 to move upward. Thus, as the transmission component 5 continues to move, the cooled plastic part inside the shaping component 2 can be slowly ejected, so as to facilitate the unloading of the plastic part and avoid damage to the plastic part during the unloading process.

[0056] 2. By activating the cylinder 401, the lifting plate 402 installed at the telescopic end is moved, which allows the lifting plate 402 to move the upper mold 202 installed at the bottom away from the lower mold 201. At the same time, the lifting plate 402 can move the fixed frame 501 installed on one side, so that the fixed frame 501 moves the telescopic rod 502 during the movement. Simultaneously, the fixed frame 501 can stretch the spring 504 fixed at the bottom, so that the spring 504 moves the connecting rod 503 fixed at the bottom in the stretched state. This causes the connecting rod 503 to push the ejector rod 601 installed inside to move, so that the ejector rod 601 moves the connecting plate 602 installed at the top, so that the connecting plate 602 moves the ejector pin 603 fixed at the top to push out the plastic part inside the lower mold 201, so as to facilitate the demolding and unmolding of the cooled plastic part.

[0057] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A shaping fixture for plastic parts, comprising a mounting bracket (1), characterized in that: The mounting frame (1) is respectively provided with a shaping component (2), a guiding component (3), a lifting component (4), a transmission component (5), and an ejection component (6); The shaping component (2) is slidably mounted inside the mounting bracket (1) so that the shaping component (2) cools and shapes the plastic part; The guide component (3) is fixedly installed at one end to the top of the shaping component (2) so that the guide component (3) guides the movement direction of the shaping component (2); The lifting component (4) is fixedly installed at its output end with the top of the shaping component (2) so that the lifting component (4) drives the shaping component (2) to open and close. The transmission component (5) is fixedly installed on one side of the lifting component (4) so ​​that the lifting component (4) drives the transmission component (5) to operate. The ejector assembly (6) is fixedly installed on its outer surface with the interior of the transmission assembly (5) so that the transmission assembly (5) drives the ejector assembly (6) to eject the shaped plastic part.

2. A plastic part shaping tool according to claim 1, wherein The shaping component (2) includes a lower mold (201), the interior of which is fixedly installed on the outer surface of the mounting bracket (1), and an upper mold (202) is attached to the top of the lower mold (201). Cold water pipes (203) are fixedly installed inside both the upper mold (202) and the lower mold (201).

3. A plastic part shaping tool according to claim 2, wherein The guide assembly (3) includes a guide rod (301) and a guide sleeve (302). The bottom end of the guide rod (301) is fixedly installed with the top end of the lower mold (201). The outer surface of the guide sleeve (302) is fixedly installed with the inside of the upper mold (202). The outer surface of the guide rod (301) is slidably disposed with the inside of the guide sleeve (302).

4. The molding tool of claim 2 wherein, The lifting assembly (4) includes a cylinder (401), the bottom end of which is fixedly installed with the top end of the mounting bracket (1), and a lifting plate (402) is fixedly installed on the telescopic end of the cylinder (401). The interior of the lifting plate (402) is slidably disposed with respect to the outer surface of the mounting bracket (1), and the bottom end of the lifting plate (402) is fixedly installed with the top end of the upper mold (202).

5. A plastic part forming tool according to claim 4, wherein The transmission assembly (5) includes a fixed frame (501), one side of which is fixedly installed on one side of the upper lifting plate (402). A telescopic rod (502) is fixedly connected to the bottom end of the fixed frame (501), and a connecting rod (503) is fixedly connected to the bottom end of the telescopic rod (502). A spring (504) is fixedly connected to the top end of the connecting rod (503), and one end of the spring (504) is fixedly connected to the bottom end of the fixed frame (501).

6. A plastic part forming tool according to claim 5, wherein The ejector assembly (6) includes an ejector rod (601), the outer surface of which is slidably disposed with the interior of the lower mold (201), the outer surface of which is fixedly disposed with the interior of the connecting rod (503), a connecting plate (602) is fixedly disposed at the top end of the ejector rod (601), and an ejector pin (603) is fixedly connected to the top end of the connecting plate (602), the outer surface of which is slidably disposed with the interior of the lower mold (201).

7. A plastic part shaping tool according to claim 6, wherein The lower mold (201) is internally fixedly connected to a limiting rod (7), and the outer surface of the limiting rod (7) is slidably disposed with the interior of the connecting plate (602).