A push plate ejection structure applied to a mold
By setting a push plate ejection structure with bronze sleeve and insert on the mold push plate, the problem of uneven ejection and movement collision caused by the irregular shape of the bottom of the blood collection pen tube product is solved, and stable demolding and efficient production are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 亿和精密工业(威海)有限公司
- Filing Date
- 2025-07-02
- Publication Date
- 2026-07-31
AI Technical Summary
The irregular shape of the bottom of the blood collection pen tube leads to uneven ejection of the ejector sleeve, which can easily cause product deformation or damage. Furthermore, the collision between the ejector sleeve and the slider affects demolding efficiency and mold life.
The push plate ejection structure is adopted, with multiple bronze sleeves on the push plate that cooperate with the insert. The self-lubricating function of the bronze sleeves replaces the traditional ejector sleeve ejection method. The insert is driven by a drive component to achieve stable ejection of the product.
This method enables stable and complete demolding of blood collection pen tubes, avoiding product deformation and mold damage, improving production efficiency and yield, and reducing maintenance costs.
Smart Images
Figure CN224576094U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mold technology, and in particular relates to a push plate ejection structure applied to molds. Background Technology
[0002] During the production of blood collection pen tubes, due to the unique shape of the product, the mold opening process requires the use of a sliding block splitting method according to its shape requirements. This is to accurately shape the complex external contour and internal structure of the blood collection pen tube, ensuring that the product meets strict quality and functional standards.
[0003] However, in the design of the ejection mechanism at the bottom of the mold, on the one hand, the bottom shape of the blood collection pen tube is irregular. This irregular shape makes it difficult to adapt the ejector tube ejection method, because the ejector tube is usually suitable for products with a relatively regular bottom shape and uniform ejection force. However, the irregular bottom will cause uneven force when the ejector tube is ejected, making it impossible to eject the product stably and completely, which can easily cause product deformation or damage.
[0004] On the other hand, forcibly adopting the ejector sleeve ejection scheme will also bring about problems with the coordination of the ejector sleeve and the slider movement. During the ejection process, the ejector sleeve's trajectory and position may overlap and conflict with the slider's movement range. When the mold opens and the slider performs the opening and closing action according to the predetermined program to complete the separation of the product molding parts, the ejector sleeve ejects the blood collection pen tube product from the bottom of the mold upwards. At this time, the ejection action of the ejector sleeve and the movement action of the slider will occur in the same spatial area, and the ejector sleeve and the slider are very likely to collide. This collision will not only hinder the smooth demolding of the blood collection pen tube product, causing defects such as damage and deformation on the product surface and reducing the product yield, but may also cause serious damage to the mold itself, accelerate the wear of mold components, increase mold maintenance costs and production downtime, and thus seriously affect the efficiency and cost-effectiveness of the entire production process. Utility Model Content
[0005] The purpose of this utility model is to provide a push plate ejection structure for molds, which addresses the problem that the irregular shape of the bottom of blood collection pen products makes it unsuitable for ejection by a sleeve, and that the sleeve and slider are prone to collisions, making it difficult to demold smoothly.
[0006] To achieve the above objectives, this utility model adopts the following technical solution: a push-plate ejection structure applied to a mold, comprising:
[0007] The push plate has several bronze sleeves on it;
[0008] Several inserts are located inside the punch, and the inserts and the punch form a forming groove. A sprue plate is provided above the punch.
[0009] A drive element, which passes through the push plate and is connected to the insert, is used to drive the insert to move within the punch.
[0010] As a further description of the above technical solution:
[0011] The driving component is a push pin, a hydraulic cylinder, or a pneumatic cylinder.
[0012] As a further description of the above technical solution:
[0013] The bronze sleeve is fixedly connected to the push plate, and the fit gap between the inner wall of the bronze sleeve and the outer wall of the insert is 0.01-0.05mm.
[0014] As a further description of the above technical solution:
[0015] The bronze sleeve is fixedly connected to the push plate, and the fit gap between the inner wall of the bronze sleeve and the outer wall of the insert is 0.01-0.05mm.
[0016] As a further description of the above technical solution:
[0017] The punch is provided with a guide groove, and a guide rod is provided on the guide groove. The guide groove is inclined outward.
[0018] As a further description of the above technical solution:
[0019] The bottom of the punch is provided with a limiting plate, and the limiting plate is provided with an arc-shaped limiting groove. The top of the bronze sleeve is located in the arc-shaped limiting groove.
[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0021] In this invention, multiple bronze sleeves are provided on the push plate, and the multiple bronze sleeves are evenly distributed along the circumference of the insert. Each bronze sleeve cooperates with the insert to provide uniform ejection force and self-lubrication effect. This structure utilizes the self-lubricating function between the bronze sleeves and the insert to prevent the movement from burning out. The push plate ejection method replaces the traditional sleeve ejection method, avoiding the failure of hitting the slider during ejection and facilitating smooth demolding of the product. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1This is a perspective view of a push plate ejection structure used in molds.
[0024] Figure 2 This is an application diagram of a push plate ejection structure used in molds.
[0025] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.
[0026] Legend:
[0027] 1-Push plate; 2-Bronze sleeve; 3-Core insert; 4-Punch; 41-Module; 5-Gating plate; 6-Driver; 7-Guide groove; 8-Guide rod; 9-Limiting plate; 10-Arc-shaped limiting groove. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0032] In the description of the embodiments of this utility model, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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 this utility model.
[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0034] Please see Figure 1-3 This utility model provides a technical solution: a push plate ejection structure applied to a mold, comprising:
[0035] Push plate 1, on which several bronze sleeves 2 are mounted;
[0036] A plurality of inserts 3 are located inside the punch 4, and the inserts 3 and the punch 4 form a forming groove. A sprue plate 5 is provided above the punch 4.
[0037] And the drive component 6, which passes through the push plate 1 and is connected to the insert 3, for driving the insert 3 to move within the punch 4.
[0038] The driving component 6 is a push pin, a hydraulic cylinder, or a pneumatic cylinder. The piston rod of the hydraulic cylinder or pneumatic cylinder passes through the push plate and connects to the insert. The extension and retraction of the piston rod are controlled by hydraulic or pneumatic pressure, thereby driving the insert to perform ejection and resetting actions.
[0039] The bronze sleeve 2 is fixedly connected to the push plate 1, and the fit gap between the inner wall of the bronze sleeve 2 and the outer wall of the insert 3 is 0.01-0.05mm. This ensures a tight fit and self-lubricating effect between the two.
[0040] The punch 4 includes two modules 41, with a positioning groove formed between the two modules 41, and the insert 3 is located in the positioning groove.
[0041] The punch 4 is provided with a guide groove 7, and a guide rod 8 is provided on the guide groove 7. The guide groove 7 is inclined outward.
[0042] The bottom of the punch 4 is provided with a limiting plate 9, and the limiting plate 9 is provided with an arc-shaped limiting groove 10. The top of the bronze sleeve 2 is located in the arc-shaped limiting groove 10. When the bronze sleeve is ejected by the push plate, it can be limited to prevent it from vibrating and affecting the driving component at the bottom of the push plate from properly ejecting the insert.
[0043] Working principle: Multiple bronze sleeves are set on the push plate and evenly distributed around the circumference of the insert. Each bronze sleeve cooperates with the insert to provide uniform ejection force and self-lubrication effect. This structure utilizes the self-lubricating function between the bronze sleeves and the insert to prevent the movement from burning out. The push plate ejection method replaces the traditional sleeve ejection method, avoiding the failure of hitting the slide block during ejection and facilitating smooth demolding of the product.
[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A push-plate ejection structure applied to a mold, characterized in that, include: The push plate has several bronze sleeves on it; Several inserts are located inside the punch, and the inserts and the punch form a forming groove. A sprue plate is provided above the punch. A drive element, which passes through the push plate and is connected to the insert, is used to drive the insert to move within the punch.
2. The ejector plate structure for a mold according to claim 1, characterized in that, The driving component is a push pin, a hydraulic cylinder, or a pneumatic cylinder.
3. The ejector plate structure for a mold according to claim 2, characterized in that, The bronze sleeve is fixedly connected to the push plate, and the fit gap between the inner wall of the bronze sleeve and the outer wall of the insert is 0.01-0.05mm.
4. The ejector plate structure for a mold according to claim 1, characterized in that, The punch includes two modules, with a positioning groove formed by a barrier between the two modules, and the insert is located in the positioning groove.
5. The ejector plate structure for a mold according to claim 4, characterized in that, The punch is provided with a guide groove, and a guide rod is provided on the guide groove. The guide groove is inclined outward.
6. The ejector plate structure for a mold according to claim 5, characterized in that... The bottom of the punch is provided with a limiting plate, and the limiting plate is provided with an arc-shaped limiting groove. The top of the bronze sleeve is located in the arc-shaped limiting groove.