CN219325490U

CN219325490U - Front and back mould core-pulling demoulding mould

Info

Publication number: CN219325490U
Application number: CN202320829515.7U
Authority: CN
Inventors: 曹重洋
Original assignee: Guangdong Pinduan Intelligent Technology Development Co ltd
Current assignee: Guangdong Pinduan Intelligent Technology Development Co ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-07-11
Anticipated expiration: 2033-04-14

Abstract

The utility model relates to a front and rear mold core-pulling demolding mold, which is used for injection molding of an injection molding piece with a central sleeve shape, and comprises a top plate, a water gap plate, a front template, a front mold core, a rear template, a thimble panel, a thimble cover plate and a bottom plate, wherein the front mold core-pulling and the rear mold core-pulling are arranged, the front mold core-pulling is assembled between the top plate and the water gap plate and penetrates through the water gap plate, the front template and the front mold core to be connected with a mold cavity, the rear mold core-pulling is assembled between the thimble panel and the thimble cover plate and penetrates through the rear template to be connected with the mold cavity, and the lower end surface of the front mold core-pulling is abutted with the upper end surface of the rear mold core-pulling to form a part of the mold cavity. The utility model can achieve stable production state without changing the structure and appearance of the product.

Description

Front and back mould core-pulling demoulding mould

Technical Field

The utility model relates to the technical field of dies, in particular to a die for core pulling and demolding of front and rear dies.

Background

When an injection molding part with a central sleeve shape is formed by the existing mold, the front mold pulling force and the rear mold pulling force are in a state of being equal, so that the ejection of a movable mold can not be stabilized, the ejection of the movable mold can be stabilized by increasing the ejection inclination of the fixed mold and reducing the ejection inclination of the movable mold under the normal condition, or the polishing treatment of the fixed mold can be performed, and the ejection of the movable mold can be stabilized by increasing the roughness of the sun-drying patterns of the movable mold. Therefore, in order to avoid modification of the product structure and appearance, improvements to existing molds are needed.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a front and rear die core-pulling and demoulding die aiming at the defects in the prior art.

The embodiment of the utility model provides a front and rear mold core-pulling demolding mold which is used for injection molding of an injection molding piece with a central sleeve shape and comprises a top plate, a water gap plate, a front template, a front mold core, a rear template, a thimble panel, a thimble cover plate and a bottom plate, wherein the front mold core-pulling and the rear mold core-pulling are arranged, the front mold core-pulling is assembled between the top plate and the water gap plate and penetrates through the water gap plate, the front template and the front mold core to be connected with a mold cavity, the rear mold core-pulling is assembled between the thimble panel and the thimble cover plate and penetrates through the rear template to be connected with the mold cavity, and the lower end face of the front mold core-pulling is abutted with the upper end face of the rear mold core-pulling to form a part of the mold cavity.

In some embodiments, the lower end face of the front mold core pulling is provided with a positioning lug, the upper end face of the rear mold core pulling is provided with a positioning groove, and the positioning lug and the positioning groove are in concave-convex fit to realize positioning when being abutted against each other.

In some embodiments, the positioning projection is in a frustum shape, and the corresponding positioning groove is in an inverted frustum shape.

Compared with the prior art, the front and rear mold core-pulling and demolding mold provided by the embodiment of the utility model has the advantages that the core-pulling mechanism is added by utilizing the sequential action of the nozzle plates, the part of the fixed mold, which is easy to be stuck, is firstly pulled out, then the mold is opened, and the product can be left in the movable mold and then is ejected. The utility model can achieve stable production state without changing the structure and appearance of the product.

The details of one or more embodiments of the utility model are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the other features, objects, and advantages of the utility model.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a block diagram of a front and rear mold core pulling and demolding mold according to an embodiment of the present utility model.

Fig. 2 is an enlarged structural view of a portion a in fig. 1.

In the figure, 1, a top plate; 2. a nozzle plate; 3. a front template; 4. a front mold core; 5. a rear template; 6. a thimble panel; 7. a thimble cover plate; 8. a bottom plate; 9. a sprue gate glue feeding mechanism; 10. square iron; 11. a spring return mechanism; 12. core pulling of the front mould; 13. core pulling of the rear mould; 14. positioning the protruding blocks; 15. and positioning grooves.

Description of the embodiments

The present utility model will be described and illustrated with reference to the accompanying drawings and examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments provided by the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model. Moreover, it should be appreciated that while such a development effort might be complex and lengthy, it would nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as having the benefit of this disclosure.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly and implicitly understood by those of ordinary skill in the art that the described embodiments of the utility model can be combined with other embodiments without conflict.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "a," "an," "the," and similar referents in the context of the utility model are not to be construed as limiting the quantity, but rather as singular or plural. The terms "comprising," "including," "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to only those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in connection with the present utility model are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means greater than or equal to two. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., "a and/or B" may mean: a exists alone, A and B exist together, and B exists alone. The terms "first," "second," "third," and the like, as used herein, are merely distinguishing between similar objects and not representing a particular ordering of objects.

As shown in fig. 1-2, the embodiment of the utility model provides a front and rear mold core pulling 13 demolding mold, which is used for injection molding an injection molding part with a central sleeve shape, and comprises a top plate 1, a nozzle plate 2, a front mold plate 3, a front mold core 4, a rear mold plate 5, a thimble panel 6, a thimble cover plate 7 and a bottom plate 8. The top plate 1 and the water gap plate 2 are provided with a sprue glue feeding mechanism 9, a front mold core 4 and a rear mold plate 5 are respectively internally provided with a water transporting mold core cooling mechanism for cooling, the rear mold plate 5 and the bottom plate 8 are supported by square iron 10, and a spring return mechanism 11 is arranged between the thimble panel 6 and the rear mold plate 5 for stable reset after thimble demolding.

In this embodiment, in order to solve the problem that the front and rear mold pull forces are equal to each other and the movable mold is not stable in ejection, the front mold core 12 and the rear mold core 13 are provided, the front mold core 12 is assembled between the top plate 1 and the nozzle plate 2 and passes through the nozzle plate 2, the front mold plate 3 and the front mold insert 4 to be connected to the cavity, the rear mold core 13 is assembled between the ejector plate 6 and the ejector plate 7 and passes through the rear mold plate 5 to be connected to the cavity, and the lower end surface of the front mold core 12 is abutted against the upper end surface of the rear mold core 13 to form a part of the cavity. The lower end face of the front die core-pulling 12 is provided with a positioning lug 14, the upper end face of the rear die core-pulling 13 is provided with a positioning groove 15, and the positioning lug 14 and the positioning groove 15 are in concave-convex fit to realize positioning when being abutted against each other. The positioning lug 14 is in a frustum shape, and the corresponding positioning groove 15 is in an inverted frustum shape. Through the increase of the structure, when the injection molding part is demolded, the water gap plate 2 is lifted before the front mold plate 3, the front mold core-pulling 12 is pulled out firstly, the front mold plate 3 is lifted later, the front mold and rear mold pulling force is avoided from being in a state of being equal, the rear mold core-pulling 13 and the ejector pins of the rear mold plate 5 are ejected, and therefore the injection molding part is demolded, and the whole process is smooth and high in stability.

It should be understood by those skilled in the art that the technical features of the above-described embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above-described embodiments are not described, however, they should be considered as being within the scope of the description provided herein, as long as there is no contradiction between the combinations of the technical features.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a mould of drawing of core drawing of patterns around mould for injection moulding has the tubular injection molding of center cover, includes roof (1), mouth of a river board (2), preceding template (3), preceding mould benevolence (4), back template (5), thimble panel (6), thimble apron (7) and bottom plate (8), its characterized in that: the front mold core pulling device is provided with a front mold core pulling device (12) and a rear mold core pulling device (13), wherein the front mold core pulling device (12) is assembled between a top plate (1) and a water gap plate (2) and penetrates through the water gap plate (2), a front mold plate (3) and a front mold core (4) to be connected with a mold cavity, the rear mold core pulling device (13) is assembled between a thimble panel (6) and a thimble cover plate (7) and penetrates through a rear mold plate (5) to be connected with the mold cavity, and the lower end face of the front mold core pulling device (12) is abutted with the upper end face of the rear mold core pulling device (13) to form a part of the mold cavity.

2. The front and rear mold core-pulling and demolding mold according to claim 1, wherein the lower end surface of the front mold core-pulling (12) is provided with a positioning lug (14), the upper end surface of the rear mold core-pulling (13) is provided with a positioning groove (15), and the positioning lug (14) and the positioning groove (15) are in concave-convex fit to realize positioning when abutting each other.

3. The front and rear mold core pulling and demolding mold according to claim 2, wherein the positioning projections (14) are in a frustum shape, and the corresponding positioning grooves (15) are in an inverted frustum shape.