CN201309235Y

CN201309235Y - Injection mould

Info

Publication number: CN201309235Y
Application number: CNU2008202140177U
Authority: CN
Inventors: 胡明东; 占柏涛
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2008-11-27
Filing date: 2008-11-27
Publication date: 2009-09-16
Anticipated expiration: 2018-11-27

Abstract

The utility model relates to an injection mould, which comprises a lower bottom plate, a lower die, a support between the lower bottom plate and the lower die, an upper die arranged correspondingly to the lower die and an ejection mechanism matching with the lower die. The ejection mechanism comprises an ejector pin, an ejector sleeve, a pin plate and an ejector sleeve base, wherein the ejector pin is connected with the lower bottom plate, the ejector sleeve is sleeved on the outer surface of the ejector pin, a pin plate slidably matches with the support, the ejector sleeve is sleeved on the outer surface of the ejector pin, and one end of the ejector sleeve base is connected with the ejector sleeve and the other end is connected with the pin plate. Compared with the prior injection moulds, the injection mould utilizes the ejector sleeve and ejector sleeve base combined structure which effectively increases stress intensity of the ejector sleeve and enables product demoulding process to be smooth.

Description

Injection mold

[technical field]

The utility model relates to the injection moulding field, relates more specifically to a kind of injection mold.

[background technology]

The ejection system design of injection mold is extremely important to the injecting products quality, the product that inside is had screw column, need do the ejector pin ejection device, traditional department's tube only is applicable to the situation that small mould and mold height are not high, but at large mold, fascia 15 injection molds shown in Figure of description 5, because it is very thin very long that department's tube 16 need be done, the 16 not only difficult processing of this kind department tube, and intensity is bad, in the injection moulding process of reality, department's tube 16 is easy to rupture, and causes the injection moulding failure.

[utility model content]

Technical problem to be solved in the utility model is the defective that fracture takes place easily at existing large injection mold department tube, and the injection mold of a kind of combined type department tin is provided, the carrying out smoothly of assurance injection moulding process.

In order to solve above-mentioned technical problem, the utility model provides a kind of injection mold, comprise lower shoe, counterdie, be arranged on support between lower shoe and the counterdie, with the patrix of the corresponding setting of counterdie and the ejecting mechanism that is matched with counterdie, described ejecting mechanism comprises the ejector pin that is connected with lower shoe, the department's tube that is sheathed on the ejector pin outer surface and the needle plate that is slidingly matched with support, wherein, described ejecting mechanism also comprises department's cylinder base, described department cylinder base is sheathed on the ejector pin outer surface, one end is connected with department tube, and the other end is connected with needle plate.

Compare with existing injection mold, department of the present utility model tube has effectively increased the force intensity that is subjected to of department's tube by department's tube being set and taking charge of the fabricated structure that cylinder base combines, and makes in the process of product stripping and can carry out smoothly.

[description of drawings]

Fig. 1 is the injection mold matched moulds view of the utility model embodiment;

Fig. 2 is the injection mold die opening state schematic diagram of the utility model embodiment;

Fig. 3 is that the injection mold product of the utility model embodiment ejects view;

Fig. 4 is the partial enlarged drawing of A part shown in Figure 1;

Fig. 5 is the injection mold structure schematic diagram of prior art.

[specific embodiment]

In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

As shown in Figure 1, 2, 3, a kind of injection mold of the present utility model, comprise lower shoe 1, counterdie 4, be arranged on support 2 between lower shoe 1 and the counterdie 4, with the patrix 6 of counterdie 4 corresponding settings and the ejecting mechanism that is matched with counterdie 4, described ejecting mechanism comprises the ejector pin 12 that is connected with lower shoe 1, is sheathed on department's tube 10 of ejector pin 12 outer surfaces and the needle plate that is slidingly matched with support 2, wherein, described ejecting mechanism also comprises department's cylinder base 11, described department cylinder base 11 is sheathed on ejector pin 12 outer surfaces, one end is connected with department tube 10, and the other end is connected with needle plate.

In actual injection mold, generally be provided with the structure of a plurality of ejector pins 12, department's tube 10, department's cylinder base 11 compositions, shown in Fig. 1,5.Above-mentioned injection mold also comprises running gate system 8, cope match-plate pattern 7, upper cores 5, following die 3, wherein running gate system 8 mainly provides injection moulding liquid to injection moulding, under the matched moulds state, upper cores 5 and following die 3 form injection molding die cavity, wherein, upper cores 5 is fixed on the patrix 6, and following die 3 is fixed on the counterdie 4, in the utility model, described cope match-plate pattern 7 also plays the location running gate system.

Needle plate, department's cylinder base 11 that ejecting mechanism of the present utility model comprises the ejector pin 12 that is connected with lower shoe 1, is sheathed on department's tube 10 of ejector pin 12 outer surfaces and is matched with support 2, described department cylinder base 11 1 ends and department tins 10 is connected, and the other end is connected with needle plate.Needle plate comprises end needle plate 14, face needle plate 13, and department's cylinder base 11 is connected with face needle plate 13, is fixed on the face needle plate 13 by end needle plate 14.

As shown in Figure 4, ejector pin 12 1 ends are connected with lower shoe 1, one end contacts with injecting products 9, department's tube 10 is set in ejector pin 12 outer surfaces, one end of department's tube 10 contacts with injecting products 9, the other end is connected with department cylinder base 11, is arranged to inverse-T-shaped structure 101 at the end that department tube 10 is connected with department cylinder base 11, by inverse-T-shaped structure 101 with take charge of cylinder base 11 and be connected.Described department cylinder base 11 and department tube 10 ends that are connected are arranged to cooperate the inverse-T-shaped groove structure 111 of inverse-T-shaped structure 101, will take charge of tube 10 and link together with taking charge of cylinder base 11, and the other end of taking charge of cylinder base 11 is fixedlyed connected with face needle plate 13.In addition, also can be convenient to take charge of dismounting, the replacing of tube 10, department's cylinder base 11 by such structure setting.

In the utility model, traditional department's tube is substituted by department's tube 10 and department's cylinder base 11, and the diameter of department's cylinder base 11 is provided with more a lot greatly than the diameter of department's tube 10, has strengthened certain intensity, in addition.The setting of department's cylinder base 11 makes the length of department's tube 10 obtain certain reducing, like this with regard to the indirect possibility that has reduced department's tube 10 fractures,

As a kind of improvement of the utility model structure, described department cylinder base 11 is arranged to cylindric, is matched with needle plate.

Described department cylinder base 11 is provided with through hole 112 along axis direction, and described ejector pin 12 is arranged in described through hole 112.

Described through hole 112 central shafts, the 111 spigot shaft coaxle settings of groove structure.

As a kind of improvement of the utility model structure, the end that described department cylinder base is connected with needle plate is arranged to inverse-T-shaped mounting structure 113.

Department of the present utility model tube has effectively increased the force intensity that is subjected to of department's tube by department's tube 10 being set and taking charge of the fabricated structure that cylinder base 11 combines, and makes in the process of product stripping and can carry out smoothly.

Injection mold operation principle and the operating process of the utility model embodiment are as follows:

1), outer power (not shown in the Figure of description) promotes patrix 6 and breaks away from counterdies 3, as shown in Figure 2;

2), needle plate 14 up moves at the bottom of the outer powered;

3), along with the motion of end needle plate 14, department's tube 10, department's cylinder base 11 up move with end needle plate 14, and product is ejected.

The above only is preferred embodiment of the present utility model, not in order to restriction the utility model, all any modifications of being done within spirit of the present utility model and principle, is equal to and replaces and improvement etc., all should be included in protection domain of the present utility model.

Claims

1. injection mold, comprise lower shoe, counterdie, be arranged on support between lower shoe and the counterdie, with the patrix of the corresponding setting of counterdie and the ejecting mechanism that is matched with counterdie, described ejecting mechanism comprises the ejector pin that is connected with lower shoe, the department's tube that is sheathed on the ejector pin outer surface and the needle plate that is slidingly matched with support, it is characterized in that: described ejecting mechanism also comprises department's cylinder base, described department cylinder base is sheathed on the ejector pin outer surface, one end is connected with department tube, and the other end is connected with needle plate.

2. according to the described injection mold of claim 1, it is characterized in that: the end that described department cylinder base is connected with department tube is arranged to inverse-T-shaped groove structure, described department tube with take charge of the end that cylinder base is connected and be arranged to inverse-T-shaped structure, described inverse-T-shaped groove structure and described inverse-T-shaped respective outer side edges.

3. according to claim 1 or 2 described injection molds, it is characterized in that: described department cylinder base is arranged to cylindric, and described department cylinder base is provided with through hole along axis direction, and described ejector pin is arranged in described through hole.

4. according to the described injection mold of claim 3, it is characterized in that: described through hole central shaft, the coaxial setting of groove structure centre axle.

5. according to the described injection mold of claim 4, it is characterized in that: described needle plate comprises face needle plate, end needle plate, and described department cylinder base is fixedlyed connected with needle plate of the described end by end needle plate.

6. according to the described injection mold of claim 5, it is characterized in that: the end that described department cylinder base is connected with needle plate is arranged to inverse-T-shaped mounting structure.