CN204658771U - A ejector pin structure of a plastic mold and a plastic mold with the ejector pin structure - Google Patents

Abstract

The utility model discloses a top rod structure of a plastic mold and the plastic mold with the same, wherein the top rod structure comprises a top rod arranged between a top needle plate and a rear mold core, the rear mold core is provided with a guide hole, the top end of the top rod passes through the guide hole, and the bottom end of the top rod is fixed on the top needle plate; the top end of the ejector rod is provided with an opening, clamping grooves matched with the product buckling positions are formed in two sides of the opening, the top end of the ejector rod is further provided with a movable mechanism, and the movable mechanism is matched with the opening to form an opening and closing mechanism capable of enabling the opening to be in an open state and a closed state. Will the utility model provides a carry out the product drawing of patterns in being applied to plastic mould with the ejector pin structure, utilize modes such as slide, oblique top to carry out the product drawing of patterns with current plastic mould and compare, it has that manufacturing procedure is simple, and the accessory is few, and advantage such as efficient can effectively shorten the cost of mould cycle and reduction mould.

Description

A ejector pin structure of a plastic mold and a plastic mold with the ejector pin structure

technical field

The utility model relates to the field of moulds, in particular to a ejector rod structure of a plastic mold and a plastic mold with the ejector rod structure.

Background technique

The cycle of existing plastic molds is getting shorter and shorter. Products with buckle positions need to be demoulded by row positions and inclined tops. There are many processing steps and time-consuming, so it is difficult to meet the production needs. Therefore, it is necessary to improve the demoulding methods of existing plastic molds.

Utility model content

In order to overcome the deficiencies and existing problems of the prior art, the utility model provides a ejector structure of a plastic mold and a plastic mold with the ejector structure, and applies the ejector structure to a plastic mold for demolding of products. It has the advantages of simple processing procedure, effectively shortening the mold cycle and the like.

The utility model is realized through the following technical solutions: a ejector pin structure of a plastic mold, comprising an ejector pin arranged between the ejector pin plate and the rear mold core, the rear mold core is provided with a guide hole, and the ejector pin The top end passes through the guide hole, and the bottom end of the ejector rod is fixed on the ejector plate; the top end of the ejector rod is provided with an opening, and there are slots on both sides of the opening that are compatible with the buckle position of the product, and the ejector rod The top end is also provided with a movable mechanism, which cooperates with the opening to form an opening and closing mechanism that can make the opening have an open state and a closed state.

Wherein, the guide hole is preferably a wire-cut straight hole, and the movable mechanism forms a U-shaped groove structure.

Preferably, the bottom end of the ejector rod is fixedly connected with the ejector plate by threads; the ejector rod is integrally formed.

Based on the above inventive concept, the utility model also provides a plastic mold with the above ejector rod structure.

The ejector rod structure provided by the utility model is applied to the plastic mold for product demoulding. Compared with the existing plastic molds that use row positions, inclined tops, etc. for product demoulding, it has simple processing procedures, fewer accessories, and high efficiency. Advantages, can effectively shorten the mold cycle and reduce the cost of the mold.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of ejector rod structure in the utility model embodiment;

Fig. 2 is a schematic diagram of the three-dimensional structure of the push rod in the embodiment of the utility model;

Fig. 3 is the schematic diagram of the three-dimensional structure of the rear mold core in the embodiment of the present invention;

Fig. 4 is a schematic cross-sectional structure diagram of the plastic mold in the embodiment of the utility model.

Among them, the reference numerals are: 1-ejector plate, 2-rear mold core, 21-wire cutting straight body hole, 3-ejector rod, 31-opening, 32-card slot, 33-movable mechanism, 34-threaded hole , 35-U-shaped groove, 4-product, 41-button, 5-bottom plate, 61-A plate, 62-B plate, 63-C plate, 7-panel, 8-nozzle plate, 9-front mold core.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in accompanying drawings 1 and 2, a ejector pin structure of a plastic mold includes an ejector pin 3 arranged between an ejector plate 1 and a rear mold core 2, the rear mold core is provided with a guide hole, and the ejector pin The top of the rod passes through the guide hole, and the bottom end of the ejector rod is fixed on the ejector plate; the top of the ejector rod is provided with an opening 31, and there are buttons on both sides of the opening that are compatible with the buckle 41 of the product 4. Draw-in slot 32, a movable mechanism 33 is also provided on the top of the push rod, and the movable mechanism 33 cooperates with the opening 31 to form an opening and closing mechanism that can make the opening have an open and closed state; wherein, when the thimble When the plate moves upward to push out the thimble, the opening and closing mechanism of the ejector rod is in the open state (the opening and closing mechanism is in an inverted trapezoidal structure when it is in the open state), and the product 4 is demoulded, and when the thimble plate is reset, the The opening and closing mechanism described above is located in the guide hole and is in a closed state; in the present embodiment, the guide hole is preferably a wire-cut straight body hole 21, as shown in Figure 3, in this Figure 3, the wire-cut straight body The number of hole settings is eight.

As shown in Figure 2, the movable mechanism in this embodiment forms a U-shaped groove structure, and the side walls of the U-shaped 35 are in an inverted "eight"-shaped structure, so that the movable mechanism is more Elasticity; the ejector rod is preferably an integrally formed structure, that is, the opening and closing mechanism formed by the opening 31, the slot 32, and the movable mechanism 33 is integrally formed with the ejector rod body; the bottom end of the ejector rod and the ejector plate are preferably threaded Fixed connection, it realizes by the threaded hole 34 that is provided with at the bottom end of mandrel.

Accompanying drawing 4 is the cross-sectional structure schematic diagram that will have above-mentioned ejector pin structure to be applied in plastic mold, and this plastic mold also includes panel 7, nozzle plate 8, A plate 61, B plate besides each parts of above-mentioned ejector pin structure 62, C plate 63, base plate 5, and front die core 9, the positional relationship of each part is as shown in accompanying drawing 4. Except for the structure of the ejector pin, the position structure of other components is the same as or similar to that of the existing plastic mold, so the position structure of each component in the plastic mold will not be described in detail here.

To apply the ejector pin structure provided in this example to a plastic mold, it is only necessary to set a wire-cut straight hole on the rear mold core, then pass the ejector rod through the wire-cut straight body hole, and pass through the screw thread provided at the bottom end of the ejector rod The holes are used to fix the ejector pin on the ejector plate. When working, when the thimble plate moves upward to push the opening and closing mechanism of the thimble away from the line cutting hole of the rear mold core, the opening and closing mechanism of the ejector rod is in an open state at this time, and the product is demoulded; and when the thimble plate When resetting, the opening and closing mechanism is in a closed state. Compared with the existing plastic molds that use row positions, inclined tops, etc. to demould products, the plastic mold with the ejector pin structure provided in this embodiment has the advantages of simple processing procedures, fewer accessories, and high efficiency, and can be used effectively. Shorten the mold cycle and reduce the cost of the mold.

The above-mentioned embodiment is a preferred implementation mode of the utility model, and is not a limitation of the utility model. Any obvious replacement is within the protection scope of the utility model without departing from the inventive concept of the utility model.

Claims (6)

1. the push rod structure of a plastic mould, comprise the push rod (3) be arranged between ejector retainner plate (1) and rear cavity (2), it is characterized in that: described rear cavity is provided with pilot hole, the top of described push rod is through described pilot hole, and the bottom of described push rod is fixed on ejector retainner plate; The top of described push rod is provided with an opening (31), these opening both sides have the draw-in groove (32) suitable with product button bit, described push rod top is also provided with a movable mechanism (33), this movable mechanism coordinate formation one that described opening can be made to have with described opening (31) to open with closure state open close mechanism.

2. push rod structure according to claim 1, is characterized in that: described pilot hole is that line cuts straight body hole (21).

3. push rod structure according to claim 2, is characterized in that: described movable mechanism forms a U-lag structure.

4. push rod structure according to claim 1, is characterized in that: described push rod bottom and ejector retainner plate are that screw thread is fixedly connected with.

5. the push rod structure according to any one of Claims 1 to 4, is characterized in that: described push rod is formed in one structure.

6. a plastic mould, is characterized in that: described plastic mould is provided with the push rod structure as described in any one of Claims 1 to 5.