CN219095813U - Oblique ejector rod, oblique ejection mechanism and die - Google Patents

Abstract

The utility model provides an inclined ejection rod, an inclined ejection mechanism and a die, which can solve the problem that the inclined ejection rod is easy to damage a die core in the prior art. The inclined ejector rod comprises a head and a guide part, the guide part is fixedly connected to the head through a first end of the guide part, the guide part is provided with a first inclined matching surface, the head is provided with a second inclined matching surface, and the inclination angle of the second inclined matching surface is larger than that of the first inclined matching surface. According to the utility model, the second inclined matching surface in the circumferential inclined surface of the head part of the inclined ejector rod is separated from the inner wall of the accommodating groove on the die core when the inclined ejector rod is started, friction stretching is not generated, the die core surface is effectively prevented from being damaged by pulling, the service life of the die is prolonged, and the cost of the die is reduced.

Description

Oblique ejector rod, oblique ejection mechanism and die

Technical Field

The utility model relates to the technical field of injection molds, in particular to an improved structure of an inclined ejection rod, an inclined ejection mechanism and a mold.

Background

In the design of a mold, for plastic products with inverted buckles inside, an inclined ejection mold is generally adopted, namely an inclined ejection mechanism is arranged in the mold. The oblique ejection mechanism generally comprises an ejection driving part, an ejection plate, an oblique ejection seat guide block and an oblique ejection rod, wherein the oblique ejection seat is fixed on the ejection plate, an oblique hole for a guide part of the oblique ejection rod to pass through and a containing groove for containing the head part of the oblique ejection rod are formed in a mold core, the bottom end of the guide part of the oblique ejection rod extends out of the mold core to be hinged to the oblique ejection seat, the head part of the oblique ejection rod is positioned in the containing groove to be internally connected with the inverted buckle for forming and ejection, the oblique ejection guide block is fixed on a mold plate, the ejection driving part drives the ejection plate to move to drive the oblique ejection seat to move up and down under the guide action of the oblique ejection seat guide block, so that the oblique ejection rod is driven to move obliquely up and down along the direction of the oblique hole to realize ejection and reset.

The structure of the oblique ejector rod 10 is generally shown in fig. 1 and 2, and comprises a head 11 and a guide part 12, wherein the cross section of the head 11 is large in size and directly participates in reverse buckle forming and ejection, the guide part 12 is an elongated rod (an oblique rod with a square cross section generally), and the cross section of the guide part is small in size and mainly plays a role in guiding and is in sliding fit with an oblique hole on a die core; in order to facilitate ejection of the diagonal draw bar from the mold, the circumferential side surface of the head 11 contacting the receiving groove of the mold core is generally inclined, i.e., has a draft angle, so that the head can be ejected smoothly when the diagonal draw bar 10 is ejected obliquely under the direction of the diagonal hole, and meanwhile, the circumferential side surface of the head comprises an inclined surface with the same inclination direction as the direction of movement of the diagonal draw bar, which is called a second inclined surface 11A for convenience of description, and correspondingly, the circumferential side surface of the guide portion 12 also comprises an inclined surface with the same direction as the direction of movement of the diagonal draw bar, which is called a first inclined surface 12A for convenience of description.

In the prior art, for convenience of processing, the second inclined matching surface 11A of the inclined ejector rod head and the first inclined matching surface 12A of the guiding part have the same inclination angle and are coplanar, i.e. the side surface of the inclined ejector rod is a plane with the same movement direction as the inclined ejector rod and the same inclination angle. However, because the inclined ejector rod is a movable part, and because of the inclination machining errors of the inclined ejector hole in the die core, the inclination machining errors of the inclined ejector rod, and the like, the inclined ejector rod possibly generates a clamping phenomenon in the moving process, if the inclined ejector rod is carelessly clamped, the head part can be pulled to damage the inner side surface of the accommodating groove, namely the die core appearance surface, when the inclined ejector rod is restarted, once the inclined ejector rod is stretched, the maintenance difficulty is high, the die core needs to be re-manufactured by serious pulling, the die cost is increased, the period of a new die is long, and the maintenance during mass production is not facilitated.

Disclosure of Invention

The utility model provides an inclined ejection rod, an inclined ejection mechanism and a die, which can solve the problem that the inclined ejection rod is easy to damage a die core in the prior art.

In order to achieve the purpose of solving the technical problems, the technical scheme of the inclined ejector rod provided by the utility model is as follows: the utility model provides an oblique ejector pin, includes head and guiding part, the guiding part with its first end link firmly in the head, the guiding part have be used for with the first oblique face of joining in marriage of inclined hole sliding fit on the mould benevolence, the head has the circumference inclined plane that is used for with the head holding tank adaptation laminating on the mould benevolence, circumference inclined plane include with first oblique face inclination the same second is joined in marriage the face, the inclination of second is greater than the inclination of first oblique face.

The difference between the inclination angle of the second inclined matching surface and the inclination angle of the first inclined matching surface is 2-5 degrees.

A reinforcing part is formed on the first end of the guide part, and the reinforcing part is connected with the first end of the guide part and the bottom surface of the head part.

The cross section of the head part is of a quadrilateral structure, and the cross section of the guide part is of a rectangular structure.

The periphery of the head part protrudes outwards from the guide part so as to form an annular hanging table encircling the periphery of the first end of the guide part.

A reinforcing part is formed on the first end of the guide part, and the reinforcing part is connected with the first end of the guide part and the bottom surface of the head part.

The utility model also provides an inclined ejection mechanism which comprises an inclined ejection seat and an inclined ejection rod, wherein the inclined ejection rod is the inclined ejection rod, and the second end of the guide part is in rolling connection with the inclined ejection seat.

The second end of the guide part is provided with a roller, the inclined top seat is correspondingly provided with a chute, the chute comprises a first chute for accommodating the second end of the guide part and a second chute for accommodating the two ends of the roller, and the first chute is perpendicular to the second chute.

And the two ends of the rolling shaft are respectively provided with a rolling wheel.

The utility model also provides a die, which comprises an inclined ejection mechanism, wherein the inclined ejection mechanism is the inclined ejection mechanism.

Compared with the prior art, the utility model has the following advantages and positive effects:

according to the inclined ejector rod, the second inclined matching surface in the circumferential inclined surface of the head part, namely the inclined surface which is the same as the inclined direction of the first inclined matching surface of the guide part, is larger than the inclined angle of the first inclined matching surface of the guide part, namely a certain included angle is formed between the inclined matching surface and the moving direction of the inclined ejector rod, when the inclined ejector rod is started, the second inclined matching surface on the head part is separated from the inner wall of the accommodating groove (namely the die core surface) on the die core, friction stretching is not generated, the die core surface is effectively prevented from being pulled, the service life of a die is prolonged, and the die cost is reduced.

Drawings

FIG. 1 is a perspective view of a prior art angled jack;

FIG. 2 is a front view of a prior art angled roof bar;

FIG. 3 is a perspective view of a diagonal jack rod according to one embodiment of the present utility model;

FIG. 4 is a partial view of a front view of an angled roof rail in accordance with an embodiment of the present utility model;

FIG. 5 is a perspective view of a diagonal jack in a second embodiment of the present utility model;

FIG. 6 is a perspective view of an angled jack in a second embodiment of the present utility model;

FIG. 7 is a partial view of a front view of an angled roof rail in accordance with a second embodiment of the present utility model;

FIG. 8 is a perspective view of a tilt head mechanism according to a third embodiment of the present utility model;

fig. 9 is a perspective view of a third embodiment of the present utility model, in which the oblique jacking mechanism omits a guide block of the oblique jacking seat;

FIG. 10 is a perspective view of a mold according to a fourth embodiment of the present utility model;

fig. 11 is a schematic cross-sectional structure of fig. 10.

Reference numerals in fig. 1 and 2: 10-inclined ejector rods; 11-head; 11A-a second bevel; 12-a guide; 12A-a first bevel;

reference numerals in fig. 3 to 11: 10-inclined ejector rods; 11-head; 11A-a second bevel; 11B-an annular hanging table; 12-a guide; 12A-a first end; 12B-a second end; 12C-a first bevel; 12D-reinforcements; 20-an inclined top seat; 21-a chute; 21A-a first runner; 21B-a second chute; 30-rolling shafts; 40-inclined top seat guide blocks; 50-male mold core; 51-inclined holes; 52-receiving slots.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Example 1

Referring to fig. 3 and 4, the diagonal jack 10 of the present embodiment includes a head 11 and a guide portion 12, where the head 11 and the guide portion 12 are in an integral structure, the guide portion 12 is a straight rod, one end in the length direction is a first end 12A thereof, the other end is a second end 12B thereof, the guide rod 12 is fixedly connected to the head 11 at the first end 12A thereof, and the second end 12B thereof is used for rolling connection with a diagonal jack. The guiding part 12 is provided with a first inclined matching surface 12C which is used for being in sliding fit with the inclined hole on the die core, the head 11 is provided with a circumferential inclined surface which is used for being in fit with the head accommodating groove on the die core, the circumferential inclined surface comprises a second inclined matching surface 11A which is the same as the inclined direction of the first inclined matching surface 12C, and the inclined angle alpha of the second inclined matching surface 11A is larger than the inclined angle beta of the first inclined matching surface 12C.

In the inclined ejector rod 10 of the present embodiment, the inclination angle α of the second inclined matching surface 11A of the head 11 is larger than the inclination angle α of the first inclined matching surface 12C of the guiding portion 12, that is, forms a certain included angle γ with the direction of movement of the inclined ejector rod (the direction of movement of the inclined ejector rod is the same as the extending direction of the first inclined matching surface 12C), as shown in fig. 4, when the inclined ejector rod is started (moves obliquely upward along the arrow direction shown in fig. 4), the second inclined matching surface 11A on the head is separated from the inner wall (i.e., the mold core surface) of the accommodating groove on the mold core (the separating direction is shown by the arrow on the upper left side in fig. 4), so that friction stretching is not generated, thereby effectively avoiding the mold core surface from being damaged, being beneficial to improving the service life of the mold and reducing the cost of the mold.

Further, the difference between the inclination angle of the second inclined surface 11A and the inclination angle of the first inclined surface 12C, that is, the angle γ, is in the range of 2 ° to 5 °, and the specific difference is determined according to the height dimension of the head 11 of the inclined ejector pin 10, which is not particularly limited herein.

The first end 12A of the guide portion 12 is formed with a reinforcing portion 12D, and the reinforcing portion 12D connects the first end 12A of the guide portion 12 and the bottom surface of the head 11. The reinforcement portion 12D can enhance the strength of the first end 12A of the guide portion 12, so as to improve the overall structural strength of the guide portion 12 and the supporting strength of the head 11, so that the inclined ejector rod of the embodiment can be further suitable for ejection of large back-off.

In this embodiment, the cross section of the head 11 is a quadrangular structure, and the cross section of the guide 12 is a rectangular structure. The inclination angle of the second inclined surface 11A needs to be larger than that of the first inclined surface 12C, and the other circumferential inclined surfaces of the head can be inclined by 1-2 °.

Example two

Referring to fig. 5 to 7, unlike the first embodiment, the head 11 protrudes outward from the guide 12, that is, the cross-sectional area of the head 11 is larger than that of the guide 12, and the orthographic projection of the first end 12A of the guide 12 on the bottom surface of the head 11 is completely located on the bottom surface of the head 11, so as to form an annular hanging stand 11B around the periphery of the first end 12A of the guide 12.

The head 11 forms annular hanging table 11B at the periphery of the first end 12A of the guide part 12, so that the contact area of the head 11 and a containing groove of a die core is increased, the positioning reliability of the inclined top head 11 in the die core is improved, the annular hanging table 11B can be reliably positioned when the inclined top is pulled down to reset, the inclined top is prevented from being pulled and damaged, and the fault rate of the inclined top is reduced.

Also, a reinforcing portion 12D is formed on the first end 12A of the guide portion 12, and the reinforcing portion 12D connects the first end 12A of the guide portion 12 and the bottom surface of the head portion 11. The reinforcement portion 12D can enhance the strength of the first end 12A of the guide portion 12, so as to improve the overall structural strength of the guide portion 12 and the supporting strength of the head 11, so that the inclined ejector rod of the embodiment can be further suitable for ejection of large back-off.

Example III

Referring to fig. 8 and 9, this embodiment provides an inclined ejection mechanism, which includes an inclined ejection seat 20 and an inclined ejection rod 10, and of course also includes an ejection driving component, an ejection plate, and an inclined ejection seat guide block 40, where the inclined ejection seat 20 is fixed on the ejection plate, and the inclined ejection seat guide block 40 is fixed on the template, and the ejection driving component drives the ejection plate to move, so as to drive the inclined ejection seat 20 to move up and down under the guiding action of the inclined ejection seat guide block 40, thereby driving the inclined ejection rod 10 to move obliquely up and down along the direction of the inclined hole of the mold core, and realizing ejection and resetting. The structure of the inclined ejector rod 10 is described with reference to the first and second embodiments of the inclined ejector rod of the present utility model and fig. 3 to 7, and will not be described herein. The second end 12B of the guiding portion 12 of the inclined ejector rod 10 is in rolling connection with the inclined ejector seat 20, so that the inclined ejector rod can move along the direction of ejection, and can also move along the direction of disengagement or approaching to the back-off relative to the inclined ejector seat 20, as shown by a double-headed arrow in fig. 9, namely core pulling or resetting is achieved.

In this embodiment, two sets of oblique ejection mechanisms are adopted to jointly eject the large back-off, two oblique ejection rods 10 are arranged in a crossed manner, the ejection and reset directions are shown by double-headed arrows in fig. 8, and the oblique ejection seat guide blocks 40 of the two sets of oblique ejection mechanisms are of an integrated structure, so as to improve the guiding reliability, and further improve the smoothness and synchronism of the actions of the two sets of oblique ejection mechanisms.

Further, the second end 12B of the guiding portion 12 is provided with the roller 30, the inclined top seat 20 is correspondingly formed with the sliding groove 21, the sliding groove comprises a first sliding groove 21A for accommodating the second end 12B of the guiding portion 12 and a second sliding groove 21B for accommodating two ends of the roller 30, the first sliding groove 21A is perpendicular to the second sliding groove 21B, namely, the sliding groove 21 is in a cross shape integrally, the sliding groove 21 plays a guiding role in rolling of the inclined top rod 10, smooth movement of the inclined top is guaranteed, and the blocking phenomenon of the inclined top in the die is further facilitated to be reduced.

The roller 30 may be an optical axis or have rollers mounted at both ends thereof, respectively, to further improve the smoothness of the tilt-up movement.

Example IV

Referring to fig. 10 and 11, the present embodiment provides an oblique ejection mold, which includes a male mold and a female mold, wherein the male mold includes a male mold plate and a male mold core 50, the female mold includes a female mold plate and a female mold core, the male mold is provided with an oblique ejection mechanism, and the structure of the oblique ejection rod 10 is described in reference to the third embodiment of the oblique ejection rod of the present utility model and fig. 8 to 9, and is not repeated here. The male die core 50 is provided with an inclined hole 51 which is in inclined sliding fit with the guide part 12 of the inclined ejector rod 10 and a containing groove 52 which is used for being matched with the head part 11 of the inclined ejector rod 10.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. The utility model provides a diagonal jack rod, includes head and guiding part, the guiding part with its first end link firmly in head, its characterized in that: the guide part is provided with a first inclined matching surface which is used for being in sliding fit with the inclined hole on the die core, the head part is provided with a circumferential inclined surface which is used for being matched and attached with the head accommodating groove on the die core, the circumferential inclined surface comprises a second inclined matching surface which is the same as the inclined direction of the first inclined matching surface, and the inclined angle of the second inclined matching surface is larger than that of the first inclined matching surface.

2. The oblique ejector pin of claim 1, wherein the difference between the angle of inclination of the second oblique mating surface and the angle of inclination of the first oblique mating surface is in the range of 2 ° -5 °.

3. The oblique ejector of claim 1, wherein the first end of the guide portion has a reinforcing portion formed thereon, the reinforcing portion connecting the first end of the guide portion and the bottom surface of the head portion.

4. The oblique ejector of claim 1, wherein the cross section of the head portion is a quadrangular structure, and the cross section of the guide portion is a rectangular structure.

5. The oblique ejector of claim 1, wherein the head portion projects outwardly from the guide portion at its periphery to form an annular hanging platform around the periphery of the first end of the guide portion.

6. The oblique ejector of claim 5, wherein the first end of the guide portion has a reinforcing portion formed thereon, the reinforcing portion connecting the first end of the guide portion and the bottom surface of the head portion.

7. An inclined ejection mechanism comprises an inclined ejection seat and an inclined ejection rod, and is characterized in that the inclined ejection rod is an inclined ejection rod according to any one of claims 1 to 6, and the second end of the guide part is in rolling connection with the inclined ejection seat.

8. The tilt head mechanism of claim 7, wherein the second end of the guide portion is provided with a roller, and the tilt head seat is correspondingly formed with a chute, the chute comprises a first chute for accommodating the second end of the guide portion and a second chute for accommodating two ends of the roller, and the first chute is perpendicular to the second chute.

9. The tilt head mechanism of claim 8, wherein rollers are mounted at each end of the roller.

10. A mould comprising a pitched roof mechanism, characterized in that the pitched roof mechanism is as claimed in any one of claims 7 to 9.

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