CN212045807U

CN212045807U - Ejection mechanism

Info

Publication number: CN212045807U
Application number: CN201922422912.9U
Authority: CN
Inventors: 张贻青
Original assignee: Suzhou Luxi Optoelectronics Technology Co ltd
Current assignee: Suzhou Luxi Optoelectronics Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-12-01
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses an ejection mechanism. The utility model comprises a die core, a workpiece wall is poured on one side of the outer part of the die core, a reinforcing rib is arranged in the middle of one side of the outer wall of the workpiece wall, the reinforcing ribs are fixedly connected with the die core through the guide grooves, small notches are uniformly arranged on one side of the outer wall of each guide groove, small planes are arranged on two sides of the inner part of each small notch, ejector rods are arranged at the top ends of the die cores, when the ejection is started, the small planes at the bottoms of the reinforcing ribs and the upper parts of all the small notches on the workpiece wall are supported by the convex blocks on the ejector rods, so that the ejector rods have enough force and strength to eject the workpiece wall, because the guide groove on the die core has inclination, the ejector rod has the action of lateral separation while ejecting upwards, the mold has the advantages that the problem that the reinforcing ribs have no demolding inclination and caused resistance can be solved, the ejection depth of the workpiece wall can be ensured, the reinforcing ribs with two side surfaces having no inclination are arranged, and the cost of the mold is reduced.

Description

Ejection mechanism

Technical Field

The utility model relates to a mould production technical field specifically is an ejection mechanism.

Background

The reinforcing ribs are arranged on the plastic products with larger areas, and because of the mold stripping of the reinforcing ribs, the two sides of the reinforcing ribs must have mold stripping slopes. The big end of the reinforcing rib is connected with the wall thickness of the workpiece.

However, the existing ejection mechanism has the problems that the existing ejection mechanism cannot overcome the resistance caused by the fact that the reinforcing ribs have no demoulding inclination and cannot ensure the ejection depth of the wall of a workpiece until the workpiece is completely ejected, and the cost of the die is increased by arranging the reinforcing ribs with the inclination on the two side surfaces.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an ejection mechanism to there is the resistance that can not overcome the strengthening rib owing to do not have drawing of patterns inclination and arouse in the current ejection mechanism who proposes in solving above-mentioned background art when using, until ejecting completely with the work piece, can not guarantee the ejecting degree of depth of work piece wall, through setting up the strengthening rib that both sides face has the inclination, has increased the problem of the cost of mould.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an ejection mechanism, includes mould benevolence, the outside one side pouring of mould benevolence has the work piece wall, work piece wall outer wall one side middle part is provided with the strengthening rib, through guide way fixed connection between strengthening rib and the mould benevolence, little breach has evenly been seted up to guide way outer wall one side, the inside both sides of little breach are provided with the facet, the ejector pin is installed on mould benevolence top.

Furthermore, the thickness of the top end of the reinforcing rib is smaller than that of the workpiece wall, and the thickness of the bottom end of the reinforcing rib is smaller than 0.8 mm.

Further, the inclination angle of the guide groove and the vertical plane is 1 degree to 5 degrees.

Furthermore, lugs are arranged on one side of the outer wall of the ejector rod at equal intervals, and the size of each lug is equal to the size of the inside of the small notch.

Furthermore, a supporting block is installed at the bottom end of the ejector rod, and a fixing groove is formed in the supporting block.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a be provided with the strengthening rib, the nick, ejector pin and lug, at ejecting when beginning, the lug through ejector pin department holds workpiece wall department strengthening rib bottom and the facet on the upper portion of all nicks, through the inseparable laminating between lug and the facet, it is ejecting with the workpiece wall to make the ejector pin have sufficient power and intensity like this, because there is the inclination guide way on mould benevolence, the ejector pin has the action of lateral separation when upwards ejecting, can overcome the strengthening rib because there is not drawing of patterns inclination and the resistance that arouses, until ejecting the work piece completely, the ejecting degree of depth through having guaranteed the workpiece wall and through setting up the strengthening rib that the both sides face does not have the inclination, and the cost of mould has been reduced.

Drawings

Fig. 1 is a schematic structural diagram in an embodiment of the present invention;

FIG. 2 is a schematic structural view of the novel reinforcing bar in the embodiment of FIG. 1;

fig. 3 is a schematic structural view of the conventional reinforcing bar in the embodiment of fig. 1.

Reference numerals: 1. a mold core; 2. reinforcing ribs; 3. a workpiece wall; 4. a guide groove; 5. a small notch; 6. a facet; 7. a top rod; 8. and (4) a bump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3 together, an ejection mechanism includes a mold core 1, a workpiece wall 3 is poured on one side of the exterior of the mold core 1, a reinforcing rib 2 is disposed in the middle of one side of the exterior wall of the workpiece wall 3, the reinforcing rib 2 is fixedly connected with the mold core 1 through a guide groove 4, in order to facilitate the sticking and supporting of the reinforcing rib 2 on the exterior wall of the workpiece wall 3 through the guide groove 4 according to actual production conditions, an inclination angle between the guide groove 4 and a vertical plane is 1 degree to 5 degrees, small notches 5 are uniformly formed on one side of the exterior wall of the guide groove 4, small planes 6 are disposed on two sides of the interior of the small notches 5, an ejector rod 7 is mounted on the top end of the mold core 1, in order to avoid sink marks generated when the surface of the workpiece wall 3 is ejected out of the guide groove 4, the thickness of the top end of the reinforcing rib, in order to facilitate upward force application on the ejector rod 7, a support block is installed at the bottom end of the ejector rod 7, a fixing groove is formed in the support block, the thickness of the bottom end of the reinforcing rib 2 is smaller than 0.8 mm, lugs 8 are installed on one side of the outer wall of the ejector rod 7 at equal intervals, the size of each lug 8 is equal to the size of the inside of each small notch 5, when ejection is started, the bottom of the reinforcing rib 2 at the position of the workpiece wall 3 and the small planes 6 at the upper parts of all the small notches 5 are supported by the lugs 8 at the position of the ejector rod 7, the ejector rod 7 has enough force and strength to eject the workpiece wall 3 through tight fit between the lugs 8 and the small planes 6, and as the guide groove 4 on the mold core 1 has inclination, the ejector rod 7 has side separation action while ejecting upwards, so that the resistance caused by no demolding inclination and no demoulding inclination of the reinforcing rib can be overcome until the workpiece is ejected completely, the ejection depth, and reduces the cost of the mold.

To sum up, the ejection mechanism provided by the utility model supports the reinforcing ribs 2 outside the workpiece wall 3 through the guide grooves 4 inside the die core 1 when in work, after the workpiece wall 3 is injection molded and cooled, when the ejection is started, the bottom of the reinforcing ribs 2 at the workpiece wall 3 and the small planes 6 at the upper parts of all the small gaps 5 are supported by the convex blocks 8 at the ejector rods 7, through the tight fit between the projection 8 and the facet 6, the ejector rod 7 has enough force and strength to eject the workpiece wall 3, because the guide groove 4 on the die core 1 has inclination, the ejector rod 7 has the action of lateral separation while ejecting upwards, can overcome the resistance caused by the lack of demoulding inclination and the lack of demoulding inclination of the reinforcing ribs 2 until the workpiece is completely ejected, by ensuring the ejection depth of the workpiece wall 3 and by providing the reinforcing ribs 2 having no inclination on both side surfaces, the cost of the die is reduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an ejection mechanism, includes mould benevolence (1), its characterized in that, the pouring of mould benevolence (1) outside one side has work piece wall (3), work piece wall (3) outer wall one side middle part is provided with strengthening rib (2), through guide way (4) fixed connection between strengthening rib (2) and mould benevolence (1), little breach (5) have evenly been seted up to guide way (4) outer wall one side, the inside both sides of little breach (5) are provided with facet (6), ejector pin (7) are installed on mould benevolence (1) top.

2. An ejection mechanism according to claim 1, wherein the top end of the reinforcing bar (2) has a thickness less than the thickness of the workpiece wall (3) and the bottom end of the reinforcing bar (2) has a thickness less than 0.8 mm.

3. An ejection mechanism according to claim 1, wherein the guide slot (4) is inclined at an angle of 1 to 5 degrees to the vertical.

4. An ejection mechanism according to claim 1, characterized in that the ejector rod (7) is provided with projections (8) on one side of its outer wall at equal distances, the size of the projections (8) being equal to the size of the inside of the small notch (5).

5. The ejection mechanism according to claim 1, wherein a support block is mounted at the bottom end of the ejector rod (7), and a fixing groove is formed in the support block.