Front mold vibrating needle structure

Abstract

The utility model provides a front mold bouncing needle structure which comprises a front mold fixing plate, a plate A, a front mold core, an ejector sleeve, a bouncing needle and a spring, the front mold fixing plate is fixed on one side of the plate A, the front mold core is embedded and fixed on the other side of the plate A, the ejector sleeve comprises a hanging cylinder and a forming cylinder, the hanging cylinder is embedded on one side, close to the front mold fixing plate, of the front mold core, and the bouncing needle is arranged on the side, close to the front mold fixing plate, of the front mold core. One end of the forming cylinder communicates with the hanging cylinder, the other end of the forming cylinder penetrates through the front mold core in the first direction, the vibrating needle comprises a hanging table, a pressing column and a forming column, the hanging table can be slidably arranged in the hanging cylinder in the first direction, the outer diameter of the hanging table is larger than the inner diameter of the forming cylinder, the outer diameter of the pressing column is larger than the outer diameter of the forming column, and one end of the pressing column is connected with the hanging table; and the spring is arranged in the plate A, and the two ends of the spring are arranged on the plate A and the hanging table in an abutting mode correspondingly and used for ensuring that the pressing column abuts against the front mold side deep column position penetrating hole of the injection molding product to the rear mold core during mold opening.

Description

TECHNICAL FIELD

[0001] The utility model relates to complex injection mold technical field especially, relates to a front mould elastic needle structure. BACKGROUND

[0002] As Figure 1 As shown in the figure, the conventional injection mold generally includes front mould 80 and back mould 90, front mould 80 includes: front mould fixed plate 81, A plate 82 and front mould kernel 83, wherein front mould fixed plate 81 and A plate 82 fixed connection, front mould kernel 83 is embedded fixed on the side of A plate 82 away from front mould fixed plate 81, back mould 90 includes B plate 91 and back mould kernel 92, back mould kernel 92 is embedded on B plate 91 side close to A plate, when product injection, B plate 91 away from A plate 82 complete mold opening, then the product left on back mould 90 is ejected and completes demolding, obtains the molded part.

[0003] But, when injection product has deep column position perforation on the front mould side, for example, as Figure 2 As shown in the figure, the conventional injection mold generally includes front mould 80 and back mould 90, front mould 80 includes: front mould fixed plate 81, A plate 82 and front mould kernel 83, wherein front mould fixed plate 81 and A plate 82 fixed connection, front mould kernel 83 is embedded fixed on the side of A plate 82 away from front mould fixed plate 81, back mould 90 includes B plate 91 and back mould kernel 92, back mould kernel 92 is embedded on B plate 91 side close to A plate, when product injection, B plate 91 away from A plate 82 complete mold opening, then the product left on back mould 90 is ejected and completes demolding, obtains the molded part. CONTENT OF UTILITY MODEL

[0004] The utility model discloses a kind of front mould elastic needle structures, to prevent the problem that injection product's front mould side deep column position perforation sticks on front mould when mold opening.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A front mould elastic needle structure is used to top the front mould side deep column position perforation of injection product on back mould along the first direction when mold opening, comprising: front mould fixed plate, A plate, front mould kernel, cylinder, elastic needle and spring, the one side of front mould fixed plate is fixed in A plate, the other side of front mould kernel is embedded fixed in A plate, cylinder includes hanging cylinder and forming cylinder, the one side of hanging cylinder is embedded in front mould kernel close to front mould fixed plate, for hanging cylinder in front mould kernel, one end of forming cylinder is communicated with hanging cylinder, the other end of forming cylinder passes through front mould kernel along the first direction, elastic needle includes hanging table, pressing column and forming column, hanging table is slidably arranged in hanging cylinder along the first direction, the outer diameter of hanging table is greater than the inner diameter of forming cylinder, the outer diameter of pressing column is greater than the outer diameter of forming column, one end of pressing column is connected with hanging table, the other end of pressing column is connected with forming column after passing through forming cylinder, forming column is used to cooperate front mould kernel, back mould kernel, forming cylinder and pressing column to form the front mould side deep column position perforation of injection product, spring is arranged in A plate, two ends of spring are respectively topped on A plate and hanging table, for guaranteeing that pressing column tops the front mould side deep column position perforation of injection product on back mould kernel when mold opening.

[0007] Optionally, the outer diameter of the pressing column is equal to the inner diameter of the forming cylinder.

[0008] Preferably, the outer diameter of the hanging platform is less than the inner diameter of the hanging cylinder.

[0009] Optionally, the outer diameter of the hanging cylinder is greater than the outer diameter of the forming cylinder.

[0010] Optionally, the axial center lines of the hanging cylinder and the forming cylinder in the first direction are coincident.

[0011] Optionally, the axial center lines of the hanging platform, the pressing column and the forming column in the first direction are coincident.

[0012] Optionally, the axial center lines of the forming cylinder and the pressing column in the first direction are coincident.

[0013] Optionally, the cylinder is an integrally formed member.

[0014] Optionally, the needle is an integrally formed member.

[0015] Optionally, the spring is a cylindrical helical spring.

[0016] Compared with the prior art, the front mold needle structure of the utility model, through the cylinder and the needle respectively core-pulling, can effectively prevent the front mold side deep column position perforation of the injection molding product from sticking to the front mold when the mold is opened, and greatly improves the quality of the injection molding product. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Figure 1 It is a schematic diagram of a conventional injection mold structure.

[0019] Figure 2 It is a schematic diagram of the structure of the front mold needle structure of an embodiment of the utility model before the cylinder core-pulling.

[0020] Figure 3 It is a schematic diagram of the structure of the front mold needle structure of an embodiment of the utility model when the needle starts to core-pull. DETAILED DESCRIPTION

[0021] In order to further understand the purpose, structure, features and functions of the utility model, the following will be described in detail in conjunction with the embodiments.

[0022] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0023] Please refer to Figure 2 And Figure 3 The utility model relates to a front mould elastic needle structure 100 for setting the front mould side deep column hole of injection product 101 on the rear mould 7 along the first direction X when mould opening, comprising: front mould fixed plate 1, A plate 2, front mould kernel 3, cylinder 4, elastic needle 5 and spring 6.

[0024] The front mould fixed plate 1 is fixed on one side of the A plate 2.

[0025] The front mould kernel 3 is embedded and fixed on the other side of the A plate 2.

[0026] The cylinder 4 includes hanging cylinder 41 and forming cylinder 42, the hanging cylinder 41 is embedded on one side of the front mould kernel 3 close to the front mould fixed plate 1, is used for hanging the cylinder 4 in the front mould kernel 3, one end of the forming cylinder 42 communicates with the hanging cylinder 41, and the other end of the forming cylinder 42 passes through the front mould kernel 3 along the first direction X.

[0027] The elastic needle 5 includes hanging platform 51, pressing column 52 and forming column 53, the hanging platform 51 is slidably arranged in the hanging cylinder 41 along the first direction X, the outer diameter of the hanging platform 51 is greater than the inner diameter of the forming cylinder 42, the outer diameter of the pressing column 52 is greater than the outer diameter of the forming column 53, so that the pressing column 52 is pressed on the rear mould 7 at the deep column hole of injection product 101, one end of the pressing column 52 is connected with the hanging platform 51, the other end of the pressing column 52 passes through the forming cylinder 42 and is connected with the forming column 53, and the forming column 53 is used for cooperating with the front mould kernel 3, rear mould kernel 71, forming cylinder 42 and pressing column 52 to form the front mould side deep column hole of injection product 101.

[0028] The spring 6 is arranged in the A plate 2, and the two ends of the spring 6 are respectively set on the A plate 2 and the hanging platform 51, for ensuring that the pressing column 52 sets the front mould side deep column hole of injection product 101 on the rear mould kernel 71 when mould opening.

[0029] Optionally, the outer diameter of the pressing column 52 is equal to the inner diameter of the forming cylinder 42, so that the elastic needle 5 can slide accurately in the cylinder 4 along the first direction X.

[0030] Preferably, the outer diameter of the hanging platform 51 is less than the inner diameter of the hanging cylinder 41, so that the elastic needle 5 can slide more smoothly.

[0031] Optionally, the outer diameter of the hanging cylinder 41 is greater than the outer diameter of the forming cylinder 42. In this way, the hanging cylinder 4 can be hung in the front mold core 3.

[0032] Optionally, the axial center lines of the hanging cylinder 41 and the forming cylinder 42 in the first direction X are coincident. In this way, the whole ejector cylinder 4 is more stable when the mold is opened.

[0033] Optionally, the axial center lines of the hanging platform 51, the pressing column 52 and the forming column 53 in the first direction X are coincident. In this way, the whole ejector pin 5 is more stable when the mold is opened.

[0034] Optionally, the axial center lines of the forming cylinder 42 and the pressing column 52 in the first direction X are coincident. In this way, the core pulling is more stable.

[0035] Optionally, the ejector cylinder 4 is an integrally formed member. In this way, the ejector cylinder 4 is convenient to process and the structure is firm.

[0036] Optionally, the ejector pin 5 is an integrally formed member. In this way, the ejector pin 5 is convenient to process and the structure is firm.

[0037] Optionally, the spring 6 adopts a cylindrical helical spring. The spring stiffness is stable, and it is convenient to purchase.

[0038] The operation principle of the front mold ejector pin structure 100 in an embodiment of the utility model:

[0039] When the mold is opened, the rear mold 7 starts to move away from the front mold core 3 along the first direction X, the forming cylinder 42 starts to move away from the deep column position of the injection molded product 101, at this time, the compressed spring 6 releases the elastic force, the pressing column 52 of the ejector pin 5 extends out of the forming cylinder 42 and remains pressed on the boss of the deep column position perforation of the injection molded product 101 for a period of time, then when the hanging platform 51 is set on the hanging cylinder 41 by the spring 6, the forming column 53 starts to move out of the deep column position perforation of the injection molded product 101, thereby leaving the injection molded product 101 completely on the rear mold 7, and then completing the subsequent demolding of the injection molded product 101;

[0040] When the mold is closed, the rear mold 7 starts to move towards the front mold core 3 along the first direction X, when the forming column 53 collides with the rear mold core 71 of the rear mold 7 (i.e. the ejector pin 5 collides with the parting surface), the pressing column 52 is pressed back into the forming cylinder 42 along the first direction X, at this time, the spring 6 is compressed, and the homing is completed when the pressing column 52 is just completely retracted into the forming cylinder 42, and then the mold is closed.

[0041] The front mold ejector pin structure of the utility model has a clever design, the core pulling is respectively realized by the ejector cylinder and the ejector pin, which can effectively prevent the deep column position perforation of the front mold side of the injection molded product from sticking to the front mold when the mold is opened, and greatly improves the quality of the injection molded product.

[0042] The utility model has been described by the above related embodiments, however the above embodiment is only the example of implementing the utility model. It must be pointed out that the disclosed embodiment does not limit the scope of the utility model. On the contrary, the change and the decoration made without departing from the spirit and scope of the utility model all belong to the patent protection scope of the utility model.

Claims

1. A front mold spring pin structure, used to abut the deep pillar through hole of the front mold side of the injection molded product onto the rear mold along a first direction during mold opening, characterized in that, The front mold spring pin structure includes: a front mold fixing plate, an A plate, a front mold core, an ejector sleeve, a spring pin, and a spring; The front mold fixing plate is fixed to one side of plate A; The front mold core is embedded and fixed on the other side of the A plate; The sleeve includes a hanging sleeve and a forming sleeve. The hanging sleeve is embedded on the front mold core near the front mold fixing plate and is used to hang the sleeve inside the front mold core. One end of the forming sleeve is connected to the hanging sleeve, and the other end of the forming sleeve passes through the front mold core along the first direction. The spring pin includes a mounting platform, a pressure post, and a forming post. The mounting platform is slidably disposed in the mounting cylinder along a first direction. The outer diameter of the mounting platform is larger than the inner diameter of the forming cylinder. The outer diameter of the pressure post is larger than the outer diameter of the forming post. One end of the pressure post is connected to the mounting platform, and the other end of the pressure post passes through the forming cylinder and is connected to the forming post. The forming post is used to cooperate with the front mold core, the rear mold core, the forming cylinder, and the pressure post to form a deep column perforation hole on the front mold side of the injection molded product. The spring is installed inside plate A, with its two ends abutting against plate A and the mounting platform, respectively. It is used to ensure that the pressure column pushes the deep column hole on the front mold side of the injection molded product onto the rear mold core when the mold is opened.

2. The front mold spring pin structure as described in claim 1, characterized in that, The outer diameter of the pressure column is equal to the inner diameter of the forming cylinder.

3. The front mold spring pin structure as described in claim 2, characterized in that, The outer diameter of the mounting platform is smaller than the inner diameter of the mounting cylinder.

4. The front mold spring pin structure as described in claim 1, characterized in that, The outer diameter of the hanging cylinder is larger than the outer diameter of the forming cylinder.

5. The front mold spring pin structure as described in claim 1, characterized in that, The axial center lines of the hanging cylinder and the forming cylinder, which are parallel to the first direction, coincide.

6. The front mold spring pin structure as described in claim 1, characterized in that, The axial center lines of the hanging platform, the pressure column, and the forming column, which are parallel to the first direction, coincide.

7. The front mold spring pin structure as described in claim 1, characterized in that... The axial centerline of the forming cylinder and the pressure column, which are parallel to the first direction, coincides.

8. The front mold spring pin structure as described in claim 1, characterized in that, The sleeve is a one-piece molded part.

9. The front mold spring pin structure as described in claim 1, characterized in that, The spring pin is a one-piece molded part.

10. The front mold spring pin structure as described in claim 1, characterized in that, The spring is a cylindrical helical spring.

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