A guide groove overhanging lip mold structure

By using a step-by-step pressing process with a guide groove cantilever lip mold, the positioning problem caused by the suspended lip of the rubber sealing strip is solved, improving the accuracy of the strip placement and the production yield.

CN224928392UActive Publication Date: 2026-11-03TAICANG JIUBEN MACHINERY & EMJ TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202522649429.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-15
Publication Date
2026-11-03
Estimated Expiration
2035-12-15

AI Technical Summary

Technical Problem

In existing technologies, the unsupported lip of the rubber sealing strip leads to a lack of positioning reference, resulting in quality problems such as inaccurate strip placement, uneven lip after injection molding, and out-of-tolerance dimensions, which affects the yield rate of production.

Method used

A guide groove cantilever lip mold structure is designed, which uses a pre-pressing mechanism for local pre-pressing and then a pressing mechanism for overall pressing, thus solving the problem of lip suspension through a step-by-step pressing process.

Benefits of technology

It significantly improved the accuracy and consistency of strip placement, reduced the scrap rate, and increased the yield and quality of finished products.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of guide groove overhanging lip mould structure, comprising: mould, pressing mechanism and pre-pressing mechanism, the mould is equipped with cavity for placing product;The pressing mechanism is located in mould, and is located in the both sides of cavity;The pre-pressing mechanism is located in the outside of cavity, and with pressing mechanism movable type connection is made.This kind of guide groove overhanging lip mould structure described in the utility model optimizes the structure of mould, by distributed pressing action, first by pre-pressing mechanism partial pre-pressing, later by pressing mechanism overall pressing;Overall moulding step-by-step pressing, by increasing a targeted partial pre-pressing process before overall pressing, fundamentally solve the positioning problem caused by lip overhanging.The device structure is simple, convenient to operate, can significantly improve the accuracy and consistency of mounting position, thereby effectively reduce scrap rate, improve production yield and product quality.
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Description

Technical Field

[0001] This utility model belongs to the field of manufacturing, and specifically relates to a guide groove cantilever lip mold structure. Background Technology

[0002] Rubber sealing strips are an important component of automobiles, and their production typically involves cutting and injection molding processes. During injection molding, if the cut of the sealing strip lip (or lip edge) is too long, it will remain suspended during the insertion process due to a lack of effective support, resulting in a missing positioning reference. This causes a series of quality problems, including inaccurate strip placement, uneven lip edges after injection molding, and dimensional deviations, ultimately leading to product scrap and severely hindering the improvement of production yield. Current technology lacks a means to effectively pre-fix this suspended lip edge before overall mold closing; therefore, there is an urgent need for a solution that can provide a reliable positioning reference during the strip insertion process. Utility Model Content

[0003] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a guide groove cantilever lip mold structure. Its structure is reasonably designed and the structure of the mold is optimized. Through distributed pressing action, local pre-pressing is first performed by the pre-pressing mechanism, and then overall pressing is performed by the pressing mechanism. The step-by-step pressing of the overall mold closing, by adding a targeted local pre-pressing process before overall pressing, fundamentally solves the positioning problem caused by the lip being suspended.

[0004] Technical solution: In order to achieve the above objectives, this utility model provides a guide groove cantilever lip mold structure, including: a mold, wherein the mold is provided with a cavity for placing the product; A pressing mechanism is located inside the mold and on both sides of the cavity; A pre-compression mechanism is located on the outside of the cavity and is movably connected to the pressing mechanism. This utility model describes a guide groove cantilever lip mold structure that optimizes the mold structure. Through distributed pressing actions, the pre-compression mechanism first performs local pre-compression, followed by overall pressing by the pressing mechanism. The step-by-step pressing of the overall mold closing, by adding a targeted local pre-compression process before overall pressing, fundamentally solves the positioning problem caused by the lip being suspended. This device has a simple structure, is easy to operate, and can significantly improve the accuracy and consistency of the strip position, thereby effectively reducing the scrap rate and improving the production yield and product quality.

[0005] The pressing mechanism includes a first sliding block, a first spring block, a pressing sliding assembly, and an adjusting component. The first sliding block is located on one side of the mold cavity and the two are movably connected. The first spring block is located on the first sliding block and has an adjusting hole. The pressing sliding assembly is located on the first spring block. One end of the adjusting component passes through the adjusting hole and connects to the pressing sliding assembly. The adjusting component drives the pressing sliding assembly to reset, thereby achieving overall pressing of the product.

[0006] The pre-compression mechanism further includes a spring guide block, a second spring block, and a control component. The spring guide block is located within the groove of the first sliding block, and a spring is installed in the mounting groove of the spring guide block. The second spring block is located within the mounting groove of the spring guide block. One end of the control component is inclined, and the inclined end passes through the spring guide block and cooperates with the second spring block. By driving the second spring block to move up and down along the spring guide block, precise and controllable local pressure can be applied to the critical outer notch lip, allowing it to pre-fit into the cavity and establish a precise positioning reference.

[0007] Additionally, it includes a limiting element, which is disposed on the control element.

[0008] This utility model also includes a mold protection sensing block, which is disposed on the control component and on the outside of the limiting component.

[0009] In addition, it also includes a second limiting member, one end of which is connected to the first spring block. When the control member moves outward, it drives the limiting member to move backward together. When the limiting member contacts the first sliding block, it stops moving.

[0010] Preferably, it also includes a spring block mold protector, which is installed on the lower template of the mold.

[0011] In addition, it includes an insert, which is connected to the first spring block via a connector. The insert facilitates the opening of the insert strip and the demolding gap.

[0012] As can be seen from the above technical solution, this utility model has the following beneficial effects: 1. The guide groove cantilever lip mold structure described in this utility model optimizes the mold structure. Through distributed clamping actions, it first performs local pre-clamping through a pre-pressing mechanism, and then performs overall clamping through a pressing mechanism. The step-by-step clamping of the overall mold closing, by adding a targeted local pre-clamping process before overall pressing, fundamentally solves the positioning problem caused by the lip being suspended. This device has a simple structure, is easy to operate, and can significantly improve the accuracy and consistency of the strip position, thereby effectively reducing the scrap rate and improving the production yield and product quality.

[0013] 2. In this utility model, the pre-pressing mechanism drives the spring block guide block to move downward through the control component. During the movement of the spring block guide block, the second spring block will move together, which can apply precise and controllable local pressure to the key outer notch lip, so that it pre-fits the cavity and establishes a precise positioning reference. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the guide groove cantilever lip mold structure described in this utility model; Figure 2 This is a schematic diagram of the open state of the guide groove cantilever lip mold structure of this utility model; Figure 3 This is a schematic diagram showing the state of the strip during installation in this utility model; Figure 4 This is a schematic diagram of the reset state of the sliding component in this utility model; Figure 5 This is a schematic diagram of the pre-compression mechanism in the open state of this utility model; Figure 6 This is a side view of the pre-compression mechanism in this utility model; Figure 7 This is a schematic diagram of the strip loading state in this utility model; Figure 8 This is a schematic diagram of the pre-compression mechanism of this utility model pressing down on the sealing strip; Figure 9 This is a schematic diagram of the structure of the sliding component in this utility model during reset; Figure 10 This is a cross-sectional view from another perspective of the present invention. Detailed Implementation

[0015] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0016] Example 1 The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0017] like Figures 1 to 10 The guide groove cantilever lip mold structure shown includes: a mold 1, a pressing mechanism 2 and a pre-pressing mechanism 3. The mold 1 is provided with a cavity for placing the product; the pressing mechanism 2 is located inside the mold 1 and on both sides of the cavity; the pre-pressing mechanism 2 is located on the outside of the cavity and is movably connected to the pressing mechanism 2.

[0018] like Figure 1, Figure 3 The pressing mechanism 2 shown includes a first sliding block 21, a first spring block 22, a pressing sliding assembly 23, and an adjusting member 24. The first sliding block 21 is located on one side of the cavity of the mold 1, and the two are movably connected. The first spring block 22 is located on the first sliding block 21 and has an adjusting hole 221. The pressing sliding assembly 23 is located on the first spring block 22. One end of the adjusting member 24 passes through the adjusting hole 221 and is connected to the pressing sliding assembly 23.

[0019] like Figure 1 , Figures 3 to 10 The pre-compression mechanism 3 shown includes a spring guide block 31, a second spring block 32, and a control component 33. The spring guide block 31 is disposed in the groove of the first sliding block 21, and a spring 34 is disposed in the mounting groove of the spring guide block 31. The second spring block 32 is disposed in the mounting groove of the spring guide block 31. One end of the control component 33 is inclined, and the inclined end passes through the spring guide block 31 and cooperates with the second spring block 32. Figure 10 As shown, during operation, when the control component 33 is pulled, the inclined end of the control component 33, together with the spring 34, will drive the second spring block 32 to move along the spring block guide block 31.

[0020] In this embodiment, the control component 33 is preferably provided with a handle ball at its end, which facilitates the operation of the control component 33. It should be noted that other control components that are easy to control can also be selected according to actual needs.

[0021] Example 2 The guide groove cantilever lip mold structure described in this embodiment is the same as the structure in Embodiment 1, and also includes a limiting member 35, which is disposed on the control member 33.

[0022] It also includes a mold protection sensing block 36, which is disposed on the control member 33 and on the outside of the limiting member 35.

[0023] It also includes a second limiting member 4, one end of which is connected to the first spring block 22. When the control member 33 moves outward, it drives the limiting member 35 to move backward together. When the limiting member 35 contacts the first sliding block 21, it stops moving.

[0024] It also includes a spring block mold holder 5, which is installed on the lower template of the mold 1.

[0025] It also includes an insert 6, which is connected to the first spring block 22 via a connector. It should be noted that the connector can be a hinge or other connectors that meet the connection requirements.

[0026] The working principle of the guide groove cantilever lip mold structure described in this embodiment is as follows: First, insert the sealing strip into the mold cavity and smooth the lip of the sealing strip to prepare for mechanical pressing; Local pre-compression: The end of the push control component 33 is provided with a handle ball. The control component 33 drives the second spring block 32 to move along the spring block guide block 31, and applies local pressure to the excessively long lip edge on the outside of the sealing strip, so that it fits tightly into the cavity in advance and establishes a precise positioning reference. Overall pressing: Pull the adjusting part 24 of the pressing mechanism 2 to drive the pressing sliding assembly 23 to reset, so that the first sliding block 21 and the pressing sliding assembly 23 can press the sealing strip together. Since the lip has been reliably fixed, the process is smooth and efficient, effectively ensuring the accuracy of the strip position and the straightness of the lip after injection molding.

[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A guide groove cantilever lip mold structure, characterized in that: include: Mold (1), wherein the mold (1) is provided with a cavity for placing the product; A pressing mechanism (2) is provided inside the mold (1) and on both sides of the cavity; The pre-pressing mechanism (3) is located on the outside of the cavity and is movably connected to the pressing mechanism (2).

2. The guide groove cantilever lip mold structure according to claim 1, characterized in that: The pressing mechanism (2) includes a first sliding block (21), a first spring block (22), a pressing sliding assembly (23), and an adjusting member (24). The first sliding block (21) is located on one side of the cavity of the mold (1), and the two are movably connected. The first spring block (22) is located on the first sliding block (21), and it is provided with an adjusting hole (221). The pressing sliding assembly (23) is located on the first spring block (22). One end of the adjusting member (24) passes through the adjusting hole (221) and is connected to the pressing sliding assembly (23).

3. The guide groove cantilever lip mold structure according to claim 2, characterized in that: The pre-compression mechanism (3) includes a spring guide block (31), a second spring block (32), and a control component (33). The spring guide block (31) is located in the groove of the first sliding block (21). A spring (34) is provided in the mounting groove of the spring guide block (31). The second spring block (32) is located in the mounting groove of the spring guide block (31). One end of the control component (33) is inclined. The inclined end passes through the spring guide block (31) and cooperates with the second spring block (32).

4. The guide groove cantilever lip mold structure according to claim 3, characterized in that: It also includes a limiting member (35), which is disposed on the control member (33).

5. The guide groove cantilever lip mold structure according to claim 3, characterized in that: It also includes a mold protection sensor block (36), which is disposed on the control member (33) and on the outside of the limiting member (35).

6. The guide groove cantilever lip mold structure according to claim 3, characterized in that: It also includes a second limiting member (4), one end of which is connected to the first spring block (22). When the control member (33) moves outward, it drives the limiting member (35) to move backward together. When the limiting member (35) contacts the first sliding block (21), it stops moving.

7. The guide groove cantilever lip mold structure according to claim 3, characterized in that: It also includes a spring block mold protector (5), which is installed on the lower template of the mold (1).

8. The guide groove cantilever lip mold structure according to claim 1, characterized in that: It also includes an insert (6), which is connected to the first spring block (22) via a connector.