CN216182363U - Injection mold with flexible touch-through structure - Google Patents

Abstract

The utility model discloses an injection mold with a flexible touch-through structure, which comprises: the injection molding die comprises a front die core and a rear die core, wherein the front die core and the rear die core are oppositely arranged up and down and form a cavity for injection molding products in the middle, a slidable ejector sleeve is inserted in the rear die core along the vertical direction, an ejector sleeve needle is inserted in the ejector sleeve, the top end of the ejector sleeve needle extends into a hole site in the cavity for molding the products, a spring and a movable insert needle are installed in the front die core, the insert needle and the ejector sleeve needle are coaxially arranged, and the spring is elastically abutted against the top end of the insert needle so that the bottom end of the insert needle is abutted against the top end of the ejector sleeve needle. This injection mold with flexible structure of bumping through is through being provided with the inlay needle and flexible supporting all the time on the top of department's barrel needle under the spring action of spring, and then can ensure the quality of product hole site, and the machining precision requirement to department's barrel needle is not high moreover, allows to have certain error, easily processes.

Description

Injection mold with flexible touch-through structure

Technical Field

The utility model relates to the technical field of injection molds, in particular to an injection mold with a flexible touch-through structure.

Background

The injection mold is a common mold for molding plastic products, and the plastic products with various forms can be molded through the injection mold so as to meet various requirements of people.

At present, in the condition that the ejector sleeve is required to be ejected out and has a collision perforation, the ejector sleeve needle is difficult to process accurately due to the fact that the ejector sleeve needle is long, the thickness of a processed die has tolerance, two conditions are easily formed after superposition, namely, the ejector sleeve needle is too long and is bent by the collision perforation; the other is that the hole site of the product can be sealed due to the over-short ejector pin, and the quality of the product can not be ensured. Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

Disclosure of Invention

In order to solve the technical problems, the utility model provides an injection mold with a flexible touch-through structure, which can effectively avoid the bending of a cylinder needle or the sealing of hole positions of a product caused by processing errors, and ensure the quality of the touch-through hole of the product.

The technical scheme adopted by the utility model for solving the technical problem is as follows: an injection mold with a flexible bump-through structure, comprising: the injection molding die comprises a front die core and a rear die core, wherein the front die core and the rear die core are oppositely arranged up and down and form a cavity for injection molding products in the middle, a slidable ejector sleeve is inserted in the rear die core along the vertical direction, an ejector sleeve needle is inserted in the ejector sleeve, the top end of the ejector sleeve needle extends into a hole site in the cavity for molding the products, a spring and a movable insert needle are installed in the front die core, the insert needle and the ejector sleeve needle are coaxially arranged, and the spring is elastically abutted against the top end of the insert needle so that the bottom end of the insert needle is abutted against the top end of the ejector sleeve needle.

As a further improvement of the utility model, the top of the front mold core is provided with a containing groove, a spring pin is arranged in the containing groove, the spring is arranged in the containing groove and sleeved on the spring pin, and a pressing block is arranged at the position, located in the containing groove, of the top of the front mold core.

As a further improvement of the utility model, the top of the insert pin is provided with a limiting boss, and the limiting boss is used for being matched with the step at the bottom of the accommodating groove to limit the insert pin.

As a further improvement of the utility model, the automatic ejector comprises a rear die, an ejector plate and a bottom plate, wherein the rear die is fixed on the rear die, the ejector plate is movably positioned between the rear die and the bottom plate, the bottom end of the ejector sleeve penetrates through the rear die and is fixed on the ejector plate, and the bottom end of the ejector sleeve needle is fixed on the bottom plate.

As a further improvement of the utility model, the diameter of the insert pin is larger than that of the ejector pin.

The utility model has the beneficial effects that: the utility model provides an injection mold with a flexible touch-through structure, which is characterized in that an insert pin is movably arranged on a front mold core, the insert pin and a cylinder ejector pin are oppositely and coaxially arranged, a spring is arranged at the top of the insert pin, and the bottom end of the insert pin is always flexibly abutted against the top end of the cylinder ejector pin under the action of the elasticity of the spring, so that the quality of hole sites of products can be ensured.

Drawings

FIG. 1 is a schematic structural diagram of an injection mold with a flexible touch-through structure according to the present invention;

fig. 2 is an enlarged view of a in fig. 2 of the injection mold with the flexible touch through structure according to the present invention.

The following description is made with reference to the accompanying drawings:

1-front mould core; 101-a containing groove;

102-step; 2-back mold core;

3-a cavity; 4-a ejector sleeve;

5-sleeve ejector pin; 6-a spring;

7-inserting a pin; 701-limiting boss;

8-spring pin; 9-briquetting;

10-rear mold; 11-ejector plate;

12-bottom plate.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 2, the present invention provides an injection mold with a flexible through-bump structure, including: the mold comprises a front mold core 1, a rear mold core 2, a rear mold 10, an ejector plate 11 and a bottom plate 12, wherein the bottom plate 12 is located below the rear mold 10, two sides of the bottom of the rear mold 10 are fixed with the bottom plate 12 through square iron, and the ejector plate 11 is movably located between the rear mold 10 and the bottom plate 12. The rear mold core 2 is fixed on the top of the rear mold 10, and the front mold core 1 and the rear mold core 2 are arranged up and down oppositely and form a cavity 3 for injection molding products in the middle.

A slidable ejector sleeve 4 is inserted in the rear mold core 2 along the vertical direction, the top end of the ejector sleeve 4 extends into the cavity 3 to be in contact with the bottom glue position surface of a formed product, the bottom end of the ejector sleeve 4 penetrates through the rear mold 10 and is fixed on the ejector plate 11, and the ejector sleeve 4 is pushed by the ejector plate 11 to eject the product upwards when the mold is opened, so that the product is separated from the rear mold core 2. A cylinder needle 5 is inserted in the cylinder 4, the bottom end of the cylinder needle 5 is fixed on the bottom plate 12, and the top end of the cylinder needle 5 extends into the cavity 3 to form a hole site on a product.

Referring to fig. 2, a spring 6 and a movable insert pin 7 are installed in the front mold core 1, specifically, an accommodating groove 101 is formed at the top of the front mold core 1, a guide hole extending to the cavity is formed along the bottom wall of the accommodating groove 101, and the insert pin 7 is slidably inserted into the guide hole and coaxially arranged with the ejector pin 5. The top of the insert pin 7 is provided with an annular limiting boss 701, and the limiting boss 701 can be stopped downwards on the step 102 at the bottom of the accommodating groove 101 to limit the insert pin 7. The spring pin 8 is arranged in the accommodating groove 101, the pin boss is arranged at the top of the spring pin 8, the pressing block 9 is arranged at the position, located in the accommodating groove 101, of the top of the front mold core 1, and the pressing block 9 is attached to the pin boss in a pressing mode. Under the limit of the limit boss 701, the spring pin 8 above and the step 102 below are matched, so that the insert pin 7 can move up and down for a certain distance. The spring 6 is arranged in the containing groove 101 and sleeved on the spring pin 8, and two ends of the spring 6 respectively and elastically abut against the top ends of the pin seat and the insert pin 7. When the die is closed, the bottom end of the insert needle 7 is always flexibly abutted against the top end of the ejector pin 5 under the elastic force action of the spring 6, so that the quality of a hole site of a product can be ensured, the requirement on the processing precision of the ejector pin 5 is not high, certain errors are allowed to exist, the processing is easy, and the defect that the ejector pin is bent or the hole site of the product is sealed due to the processing errors in the prior art is overcome.

Preferably, the diameter of the insert pin 7 is larger than that of the sleeve pin 5. Through adopting this design, when inlaying needle 7 and hugging department's barrel needle 5 tightly, can ensure that inlay needle 7 and push down the whole top surfaces of department's barrel needle 5, avoid causing the influence because of the processing error to bumping the perforation quality.

In the injection mold of the embodiment, when the mold is closed, the front mold core 1 moves downward relative to the rear mold core 2 to drive the insert pin 7 to synchronously move downward to contact with the ejector pin 5, when the front mold core 1 moves downward continuously, the insert pin 7 moves relative to the front mold core 1 under the stop of the ejector pin 5 and compresses the spring 6 until a completely closed state is reached, and the insert pin 7 keeps in close contact with the ejector pin 5 under the elastic force of the spring 6.

Therefore, according to the injection mold with the flexible touch-through structure, the insert pin is movably mounted on the front mold core, the insert pin and the cylinder ejector pin are arranged oppositely and coaxially, the spring is mounted at the top of the insert pin, the bottom end of the insert pin is always flexibly abutted against the top end of the cylinder ejector pin under the action of the elastic force of the spring, the quality of product hole sites can be further ensured, the requirement on the processing precision of the cylinder ejector pin is not high, certain errors are allowed to exist, the processing is easy, and the injection mold is simple in structure, reasonable and ingenious in design.

In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the utility model, which can be embodied in many different forms than described herein, and therefore the utility model is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims (5)

1. The utility model provides an injection mold with structure is run to flexibility, includes front mould benevolence (1) and back mould benevolence (2), front mould benevolence (1) with back mould benevolence (2) relative setting from top to bottom forms die cavity (3) that are used for the injection moulding product in the middle of it, its characterized in that: the die comprises a rear die core (2), a slidable ejector sleeve (4) is inserted in the vertical direction on the rear die core (2), an ejector sleeve needle (5) is inserted in the ejector sleeve (4), the top end of the ejector sleeve needle (5) extends into a hole site in a die cavity (3) for forming a product, a spring (6) and a movable insert needle (7) are installed in a front die core (1), the insert needle (7) and the ejector sleeve needle (5) are coaxially arranged, and the spring (6) elastically abuts against the top end of the insert needle (7) so that the bottom end of the insert needle (7) abuts against the top end of the ejector sleeve needle (5).

2. The injection mold with the flexible bump-through structure as claimed in claim 1, wherein: the top of the front mold core (1) is provided with a containing groove (101), a spring pin (8) is arranged in the containing groove (101), the spring (6) is arranged in the containing groove (101) and sleeved on the spring pin (8), and the top of the front mold core (1) is located in the containing groove (101) and provided with a pressing block (9).

3. The injection mold with the flexible bump-through structure as claimed in claim 2, wherein: the top of the insert needle (7) is provided with a limiting boss (701), and the limiting boss (701) is used for being matched with the step (102) at the bottom of the accommodating groove (101) to limit the insert needle (7).

4. The injection mold with the flexible bump-through structure as claimed in claim 1, wherein: the ejector sleeve is characterized by further comprising a rear die (10), an ejector plate (11) and a bottom plate (12), wherein the rear die core (2) is fixed on the rear die (10), the ejector plate (11) is movably located between the rear die (10) and the bottom plate (12), the bottom end of the ejector sleeve (4) penetrates through the rear die (10) and is fixed on the ejector plate (11), and the bottom end of the ejector sleeve needle (5) is fixed on the bottom plate (12).

5. The injection mold with the flexible bump-through structure as claimed in claim 1, wherein: the diameter of the insert pin (7) is larger than that of the ejector pin (5).

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