CN217018539U

CN217018539U - Die for preventing ejector pin imprints on product

Info

Publication number: CN217018539U
Application number: CN202220107827.2U
Authority: CN
Inventors: 梁翔; 高奇; 何文杰; 李振宇
Original assignee: Wuxi Guojin Precision Machinery Technology Co ltd
Current assignee: Wuxi Guojin Precision Machinery Technology Co ltd
Priority date: 2022-01-16
Filing date: 2022-01-16
Publication date: 2022-07-22
Anticipated expiration: 2032-01-16

Abstract

The utility model provides a die for preventing a product from having a thimble mark, which comprises an ejection mechanism, wherein the ejection mechanism drives a thimble to move back and forth under the driving of an ejection oil cylinder of a die casting machine; one end of the ejector pin is arranged on the ejection mechanism, and the other end of the ejector pin is provided with a slag ladle in an ejecting way; the die core comprises a movable die core and a fixed die core, the parting surfaces of the movable die core and the fixed die core are matched to form a die cavity of a die-casting product in the die cavity, and a slag ladle die cavity is arranged around the die cavity; the cinder ladle die cavity includes: the connecting cavity is vertically arranged with the side surface of the die cavity; the slag ladle body cavity is horizontally arranged, and the top of the slag ladle body cavity is not lower than the parting surface of the fixed die core. The ejector pins are used for being ejected on the slag ladle around the product under the action of the die casting machine, the product is pushed to be demoulded in a mode of assisting ejection of the slag ladle, the smooth demould can be realized, the problem that the ejector pins are marked on the product can be avoided, meanwhile, the slag ladle is arranged around the mounting hole, the deformation problem in the demould process can be avoided, and the product quality is guaranteed.

Description

Die for preventing ejector pin imprints on product

Technical Field

The utility model mainly relates to the field of die-casting dies, in particular to a die capable of avoiding a thimble mark on a product.

Background

The existing die-casting die is usually pushed out of a product by the ejector pin in a withdrawing process after the product is finished, so that marks are left on the surface of the die-casting product, but the appearance is influenced, the situation of not harming the die-casting die is controlled, the damage to the product to a certain degree is avoided, and the requirements on the surface situation of the die-casting product of the wire harness joint of a new energy automobile are met.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned problems and needs, it is an object of the present invention to provide a mold for avoiding the occurrence of pin marks on products, which solves the above problems and brings other technical effects by adopting the following technical features.

In order to achieve the above object, the present invention provides a mold for preventing a product from having a thimble mark, comprising:

the ejection mechanism drives the ejector pin 1 to move back and forth under the driving of an ejection oil cylinder of the die casting machine;

one end of the ejector pin 1 is mounted on the ejection mechanism, and the other end of the ejector pin 1 is provided with a slag ladle 2 in an ejection mode;

the die core comprises a movable die core 3 and a fixed die core 4, a die cavity 5 of a die-casting product is formed in the movable die core 3 and the fixed die core 4 after the parting surfaces are matched, and a slag ladle die cavity 6 is arranged around the die cavity 5;

the slag ladle cavity 6 comprises:

the connecting cavity 61 is arranged perpendicular to the parting surfaces of the movable mold core 3 and the fixed mold core 4;

the slag ladle body cavity 62 is horizontally arranged, and the top of the slag ladle body cavity 62 is not lower than the parting surface of the die core 4.

According to a preferred solution, the ejection mechanism comprises:

a knock-out plate 7;

the ejector pin fixing plate 8 is installed on one side, close to the die core, of the ejector plate 7, one end of the ejector pin 1 is installed on the ejector pin fixing plate 8, and the ejector plate 7 drives the ejector pin fixing plate 8 to drive the ejector pin 1 to move back and forth.

According to the preferred scheme, the ejector plate 7 and the ejector pin fixing plate 8 are fixed through bolts 9.

According to the preferred scheme, a plurality of bolts 9 are arranged, and the bolts 9 are uniformly distributed.

According to a preferred scheme, the thimble 1 comprises a flange platform 101 and a thimble body 102, the top of the thimble body 102 extends outwards along the circumferential direction to form the flange platform 101 with an inner diameter larger than that of the thimble body 102, and the flange platform 101 fixes and installs the thimble 1 on an installation hole on the thimble fixing plate 8.

According to a preferred solution, the slag ladle cavity 6 is arranged close to the side of the mold cavity 5 having the mounting hole 10.

According to the preferred scheme, a plurality of slag ladle cavities 6 are arranged at equal intervals along the periphery of the mold cavity 5.

According to the preferred scheme, the slag ladle cavity 6 is symmetrically arranged by taking the center line of a product as a symmetry axis.

According to a preferred scheme, the projection area of the slag ladle body cavity 62 is larger than the cross-sectional dimension of the thimble 1.

According to the preferred scheme, the slag ladle body cavity 62 is in a circular truncated cone shape, and the middle outer diameter is larger than the outer diameters of the upper end and the lower end.

According to a preferred embodiment, the slag ladle body cavity 62 is a cube with rounded corners.

According to a preferred embodiment, the height of the connecting cavity 61 corresponds to the height of the side of the moulding cavity 5.

According to a preferred embodiment, the top of the ladle body chamber 62 is higher than the upper surface of the connecting chamber 61.

According to a preferred embodiment, the height of the ladle body chamber 62 is twice the height of the connecting chamber 61.

The utility model has the beneficial effects that: the thimble is under the effect of die casting machine, and the thimble pushes up on product cinder ladle all around, uses the supplementary ejecting mode of cinder ladle to promote the product drawing of patterns, has realized can drawing of patterns smoothly and can avoid leaving the problem of thimble seal of a government organization in old china at the product itself, and simultaneously, the cinder ladle is arranged around being close to the mounting hole, and the deformation problem when can avoiding the drawing of patterns guarantees product quality.

The best mode for carrying out the utility model will be described in more detail below with reference to the accompanying drawings so that the features and advantages of the utility model can be readily understood.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the present invention, wherein the cavity insert is not shown;

FIG. 3 is a perspective view of the core insert according to the present invention;

FIG. 4 is a perspective view of the present invention with respect to the stationary mold core and the pressed product;

FIG. 5 is a perspective view of a cavity insert according to the present invention;

FIG. 6 is a perspective view of the thimble of the present invention;

FIG. 7 is a perspective view of the slag ladle of the present invention;

in the figure, the position of the first and second end faces,

1. a thimble 101, a flange table 102 and a thimble body; 2. slag ladle; 3. a movable mould core; 4. fixing a mold core; 5. a mold cavity; 6. a slag ladle cavity 61, a connecting cavity 62 and a slag ladle body cavity; 7. ejecting the plate; 8. a thimble fixing plate; 9. a bolt; 10. mounting holes; 11. producing a product; 12. and (4) connecting the two parts.

Detailed Description

In order to make the objects, technical solutions and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the specific embodiments of the present invention. Like reference numerals in the drawings denote like elements. It should be noted that the described embodiments are part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without inventive step, are within the scope of protection of the utility model.

Possible embodiments within the scope of protection of the utility model may have fewer components than the examples shown in the figures, have other components not shown in the figures, different components, differently arranged components or differently connected components, etc. Further, two or more of the components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as a plurality of separate components.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims of the present application does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The utility model provides a die for preventing a product from having thimble marks, which is used in the exit process of a die-casting machine product.

Generally, the mold for preventing the product from having the thimble mark provided by the utility model mainly comprises an ejection mechanism, a thimble and a mold core. Reference may be made to fig. 1-2, which illustrate the arrangement of the ejection mechanism, the ejector pin and the mold core.

When the product after die-casting is accomplished needs ejecting mould benevolence, ejecting hydro-cylinder on the die-casting machine is ejecting, on withstanding ejector plate 7, because thimble 1 installs on thimble fixed plate 8, fixed plate 8 and ejector plate 7 pass through bolt 9 fixed mounting, can push up thimble 1 on cinder ladle 2, can drive thimble 1 and do ejecting action together when ejecting hydro-cylinder promotes the ejector plate, 2 drawing of patterns of cinder ladle are promoted in the ejecting action of thimble 1, cinder ladle 2 links to each other through the junction with product 11, thereby make cinder ladle 2 drive 11 drawing of patterns of product, and can not leave ejecting seal of a government organization in old china on product 11, reach the demand of product.

Structurally, the slag ladle 2 is arranged around the product 11, preferably, as the pins penetrate through the mounting holes 10 in the die-casting process, the mounting holes 10 are broken or deformed due to the existence of anti-demoulding force during demoulding, and therefore, the slag ladle 2 is arranged at one side close to the mounting holes 10 of the product 11; specifically, a die cavity 5 of a die-casting product is formed inside a split surface of the movable die core 3 and the fixed die core 4 after being matched, and a slag ladle die cavity 6 is arranged around the die cavity 5; wherein, sediment package die cavity 6 is including connecting chamber 61 and sediment package body chamber 62, it is located cover half benevolence 4 to connect chamber 61, sediment package body chamber 62 is formed jointly by movable mould benevolence 3 and cover half benevolence 4, have sufficient intensity when thimble 1 is ejecting in order to increase sediment package 2, it sets up with the die joint of cover half benevolence 3 to connect chamber 61 perpendicular to movable mould benevolence 3, also be exactly 12 perpendicular to die joints of junction of sediment package 2 and product 11, can play the effect that improves joint strength, can effectively guarantee the profile of 11 mounting holes 10 departments of product and keep.

In the present embodiment, preferably, the top of the slag ladle body cavity 62 is higher than the upper surface of the connecting cavity 61, and the height of the slag ladle body cavity 62 located in the moving die core 3 is not lower than the height of the connecting cavity 61, that is, the overall height of the slag ladle body cavity 62 is twice the height of the connecting cavity 61, and in this proportion, a sufficiently strong supporting strength for the thimble 1 can be obtained, and a product can be taken out by using a slag ladle.

As mentioned above, the connection strength between the slag ladle 2 and the product 11 directly affects the quality of the product 11 when exiting, and for this reason, a plurality of slag ladle cavities 6 are arranged at equal intervals along the periphery of the mold cavity 5, and are symmetrically arranged by taking the center line of the product as a symmetry axis, so that the stress balance can be achieved, and on this basis, according to the specific position of the product mounting hole 10, the slag ladle cavity 6 is also arranged on one side close to the mounting hole 10.

On the basis of the installation layout of the slag ladle 2, the slag ladle 2 also needs to provide a large enough supporting surface for the thimble 1, and the purpose can be achieved by making the projection area of the slag ladle body cavity 62 larger than the cross section size of the thimble 1.

The structure of the slag ladle 2 is designed into a round table shape or a cylindrical shape or a cube with round corners in actual use, wherein the outer diameters of the upper end and the lower end of the round table shape are the same, the middle outer diameter is larger than the outer diameters of the upper end and the lower end, and the outer diameter of the parting surface of the die core is the largest, so that the die core has enough strength when being separated, and the die core cannot deform or be demolded and pulled to damage.

In the present embodiment, preferably, in order to ensure the connection strength between the ejector plate 7 and the ejector fixing plate 8 and achieve zero delay of power transmission therebetween, a plurality of bolts 9 are provided, and a plurality of bolts 9 are uniformly distributed.

In addition, in order to facilitate the thimble 1 not to move randomly after being installed and the stability of installation, the thimble 1 is arranged to have a structure of a flange platform 101 and a thimble body 102, the top of the thimble body 102 extends outwards along the circumferential direction to form the flange platform 101 with the inner diameter larger than that of the thimble body 102, the flange platform 101 fixes and installs the thimble 1 in the installation hole on the thimble fixing plate 8, and after installation, the thimble 1 is fastened and connected under the action of the flange platform 101.

The above-described embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the present application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of this patent application.

Claims

1. The utility model provides a avoid having thimble seal of a government organization in old china's mould on product which characterized in that includes:

the ejection mechanism drives the ejector pin (1) to move back and forth under the driving of an ejection oil cylinder of the die casting machine;

one end of the ejector pin (1) is arranged on the ejection mechanism, and the other end of the ejector pin (1) is propped against the slag ladle (2);

the die core comprises a movable die core (3) and a fixed die core (4), the parting surfaces of the movable die core (3) and the fixed die core (4) are matched to form a die cavity (5) of a die-casting product in the die, and a slag ladle die cavity (6) is arranged around the die cavity (5);

the slag ladle cavity (6) comprises:

the connecting cavity (61), the connecting cavity (61) is perpendicular to the parting surface of the movable die core (3) and the fixed die core (4);

the slag ladle body cavity (62) is horizontally arranged, and the top of the slag ladle body cavity (62) is not lower than the parting surface of the fixed die core (4).

2. The mold for avoiding needle imprint on a product of claim 1, wherein the ejection mechanism comprises:

a knock-out plate (7);

the ejector pin fixing plate (8), one side that ejector plate (7) is close to mould benevolence is installed in ejector plate (8), install the one end of thimble (1) on ejector plate (8), ejector plate (7) drive thimble fixing plate (8) drive thimble (1) back-and-forth movement.

3. The mold for avoiding needle marks on products according to claim 2, wherein: the slag ladle cavity (6) is arranged close to one side of the cavity (5) with the mounting hole (10).

4. The mold for avoiding needle marks on products according to claim 3, wherein: the slag ladle mold cavity (6) is symmetrically arranged by taking the center line of a product as a symmetry axis.

5. The mold for avoiding needle marks on products according to claim 4, wherein: the projection area of the slag ladle body cavity (62) is larger than the cross section size of the thimble (1).

6. The mold for avoiding needle marks on products according to claim 5, wherein: the slag ladle body cavity (62) is in a round table shape, and the outer diameter of the middle is larger than that of the upper end and the lower end.

7. The mold for avoiding the occurrence of pin marks on a product according to claim 6, wherein: the height of the connecting cavity (61) is consistent with the height of the side of the die cavity (5).