CN217968204U

CN217968204U - Injection mold directly pushes up fixed knot and constructs

Info

Publication number: CN217968204U
Application number: CN202122099784.6U
Authority: CN
Inventors: 张汉东; 何杰周
Original assignee: Qingyuan Minhui Auto Parts Co ltd
Current assignee: Qingyuan Minhui Auto Parts Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-12-06
Anticipated expiration: 2031-09-01

Abstract

The utility model discloses an injection mold directly pushes up fixed knot to construct relates to injection mold technical field, and this directly pushes up the structure and includes: the straight ejection block is provided with a limiting hole and a fixing hole, and the cross section profile of the limiting hole comprises at least two different curves; one end of the ejector rod is matched with the limiting hole, and a connecting hole is formed in the ejector rod; and the fixing device comprises a first screw, and the connecting hole and the fixing hole are fixedly connected through the first screw. The cross section outline of the limiting hole is set to comprise at least two different line segments, and the outer edge of the ejector rod is matched with the outline of the limiting hole, so that the straight ejector block can be prevented from rotating or loosening relative to the ejector rod in the ejection-reset reciprocating motion, and the connection reliability and accurate positioning of the ejector rod and the straight ejector block are further ensured.

Description

Injection mold directly pushes up fixed knot and constructs

Technical Field

The utility model relates to an injection mold technical field, in particular to injection mold directly pushes up fixed knot and constructs.

Background

In the process of ejection-resetting reciprocating motion of a straight ejection mechanism of the injection mold, a straight ejection block of the straight ejection mechanism is easy to rotate or loosen relative to an ejector rod, so that the close matching state of the straight ejection block and the ejector rod is influenced, and further the product demolding is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an injection mold directly pushes up fixed knot and constructs can effectively avoid directly the kicking block to take place relative rotation or not hard up condition with the ejector pin when the reciprocating motion of ejecting resetting.

The utility model discloses injection mold directly pushes up fixed knot and constructs, include: the straight ejection block is provided with a limiting hole and a fixing hole, and the cross section profile of the limiting hole comprises at least two different curves; one end of the ejector rod is matched with the limiting hole, and a connecting hole is formed in the ejector rod; and the fixing device comprises a first screw, and the connecting hole and the fixing hole are fixedly connected through the first screw.

Further, the cross section profile comprises a straight line section and a circular arc section, and one end of the straight line section is connected with one end of the circular arc section.

Furthermore, the central angle of the circular arc section is larger than 180 degrees, and the other end of the straight line section is connected with the other end of the circular arc section.

Furthermore, the upper end surface of the ejector rod is abutted against the straight ejector block.

Further, the axis of the fixing hole coincides with the axis of the ejector rod.

Furthermore, the first screw is an inner hexagonal screw, and the fixing hole is matched with the inner hexagonal screw.

Furthermore, the other end of the ejector rod is provided with a threaded hole, and the threaded hole is used for being fixedly connected with a rear mold core of the mold.

According to the utility model discloses injection mold directly pushes up fixed knot and constructs has following beneficial effect at least: the cross section outline of the limiting hole is set to comprise at least two different curves, the outer edge of the ejector rod is in close contact with the outline of the limiting hole, so that the straight ejector block can be prevented from rotating or loosening relative to the ejector rod in the ejection-reset reciprocating motion, the connection reliability and accurate positioning of the ejector rod and the straight ejector block are ensured, and the quality of a product is further ensured.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic front view of a straight-top fixing structure of an injection mold according to an embodiment of the present invention;

fig. 2 is a right schematic view of the injection mold straight top fixing structure according to the embodiment of the present invention;

fig. 3 is a schematic bottom view of the injection mold straight-top fixing structure according to the embodiment of the present invention;

FIG. 4 is a schematic structural view of the ejector pin in the embodiment of the present invention;

fig. 5 is a schematic diagram of a push rod structure at another view angle in an embodiment of the present invention.

Reference numerals are as follows:

straight kicking block 11, ejector pin 12, up end 121, spacing portion 122, first screw 131, spacing hole 100, screw hole 200.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In the description of the present invention, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 to 3, the injection mold of the embodiment of the present invention directly pushes up fixed knot to construct, including straight kicking block 11, ejector pin 12 and fixing device.

Specifically, the straight top block 11 is provided with a limiting hole 100 and a fixing hole, and the cross section profile of the limiting hole 100 comprises at least two different curves; one end of the ejector rod 12 is matched with the limiting hole 100, and a connecting hole is formed in the ejector rod 12; the fixing device includes a first screw 131, and the connecting hole and the fixing hole are fixedly connected by the first screw 131. The other end of the ejector rod 12 is fixedly connected with a rear mold core of the mold.

The cross section outline of the limiting hole 100 is set to comprise at least two different line segments, and the outer edge of the ejector rod 12 is matched with the outline of the limiting hole 100, so that the straight ejector block 11 can be prevented from loosening and rotating in the ejection-reset reciprocating motion, and the connection reliability and accurate positioning of the ejector rod 12 and the straight ejector block 11 are ensured.

It should be understood that the diameter of the fixing hole and the first screw 131 is smaller than the diameter of the top rod 12, and the fixing hole and the connecting hole are provided with threads matching with the first screw 131, so as to ensure that the first screw 131 can fix the top rod 12 with the straight top block 11.

It should be noted that the curved line includes a straight line, a circular arc, and a multi-segment curved line.

In one embodiment, the cross-sectional profile comprises a straight line segment and a circular arc segment, wherein one end of the straight line segment is connected with one end of the circular arc segment, and the other end of the straight line segment is connected with the other end of the circular arc segment. One end of the ejector rod 12 is connected in the limiting hole 100, and the cross section profile of the ejector rod 12 in the limiting hole 100 is matched with the cross section profile of the limiting hole 100, so that the ejector rod 12 can be tightly attached to the limiting hole 100, and the ejector rod 12 is prevented from shaking or loosening in the limiting hole 100. The cross-sectional profile of the carrier rod 12 has a circular arc segment, in other words, the carrier rod 12 has a circular arc surface. The surface of the ejector rod 12 is set to be the arc surface, so that the manufacturing and the production of the ejector rod 12 are facilitated.

The contour of the limiting hole 100 comprises an arc section and a straight line section, the ejector rod 12 connected with the limiting hole 100 is matched with the limiting hole 100, namely the cross section contour of the ejector rod 12 connected with the limiting hole 100 also comprises the arc section and the straight line section. The arc section can position the arc surface of the ejector rod 12 and can be tightly attached to the outer circumference of the ejector rod 12; the straight line segment can limit the top rod 12 to rotate in the limit hole 100, so that the straight top block 11 is prevented from generating angular deviation or relative rotation with the top rod in the ejection-resetting reciprocating motion.

Furthermore, the central angle of the circular arc section is larger than 180 degrees, and the other end of the straight line section is connected with the other end of the circular arc section. Generally, the ejector pin 12 is cylindrical or polygonal. The central angle of the arc section is larger than 180 degrees, the structural strength of the ejector rod 12 can be ensured, the connection strength of the ejector rod 12 and the straight ejector block 11 can be further ensured, and the condition that the ejector rod 12 is bent or broken in the working process is avoided. The central angle of the circular arc section is greater than 180 degrees, the two ends of the straight line section are directly connected with the two ends of the circular arc section, the cross section outline of the limiting hole 100 is prevented from comprising curves of various differences, the manufacturing difficulty of the ejector rod 12 can be reduced, the ejector rod 12 and the limiting hole 100 are conveniently matched tightly, and the structural strength of the ejector rod 12 is guaranteed simultaneously.

In other embodiments, the cross-sectional profile is formed of a plurality of straight segments and a circular segment.

In one embodiment, the upper end surface 121 of the top bar 12 abuts against the straight top block 11. Specifically, the upper end surface 121 of the ejector rod 12 abuts against the bottom of the hole of the limiting hole 100, so that the acting force can be directly transmitted between the straight ejector block 11 and the ejector rod 12, the first screw 131 is prevented from bearing the acting force from the ejector rod 12 or the straight ejector block 11, and the first screw 131 is effectively prevented from being loosened or failing in the using process.

In one embodiment, the axis of the fixing hole coincides with the axis of the top rod 12, and the projection of the fixing hole in the axial direction of the fixing hole is located in the limiting hole 100. When installing straight kicking block 11 on ejector pin 12, through tightening up first screw 131 for the up end 121 of ejector pin 12 and the hole bottom in close contact with in spacing hole 100 can effectively avoid straight kicking block 11 and ejector pin 12 to take place relative not hard up or rock.

In other embodiments, the axis of the fixing hole is perpendicular to the axis of the top rod 12, and the connecting hole is arranged in a direction corresponding to the fixing hole. Correspondingly, the fixed orifices and the connecting holes are provided with internal threads, the external threads of the fixed orifices and the connecting holes are matched with the external threads of the first screws 131, and the first screws 131 are respectively connected with the fixed orifices and the connecting holes.

In one embodiment, the first screw 131 is a socket head cap screw, and the fixing hole is matched with the socket head cap screw. Wherein, the fixed hole is a counter bore. The fixing hole and the connecting hole are both provided with internal threads, and the internal threads are matched with the external threads of the inner hexagonal screw. During assembly, the inner hexagonal screw is sequentially in threaded connection with the fixing hole and the connecting hole so as to fix the straight ejector block 11 on the ejector rod 12. The setting of hexagon socket head cap screw has made things convenient for the installation and the dismantlement of straight kicking block 11, can save maintenance installation time under the circumstances of proof strength, improves maintenance installation effectiveness.

In one embodiment, the other end of the top bar 12 is provided with a threaded hole 200, and the threaded hole 200 is used for fixedly connecting with the rear mold core of the mold.

Further, referring to fig. 4 and 5, a limiting portion 122 is further disposed at one end of the top rod 12 where the threaded hole 200 is disposed, and a cross-sectional profile of the top rod 12 at the limiting portion 122 can be formed by an arc and a straight line. When the ejector rod 12 is fixedly connected with the rear mold core of the mold, the corresponding component is arranged to be in close contact with the limiting part 122 so as to prevent the ejector rod 12 from rotating during operation.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims

1. The utility model provides an injection mold directly pushes up fixed knot constructs which characterized in that includes:

the straight ejection block is provided with a limiting hole and a fixing hole, and the cross section profile of the limiting hole comprises at least two different curves;

one end of the ejector rod is matched with the limiting hole, and a connecting hole is formed in the ejector rod; and

and the fixing device comprises a first screw, and the connecting hole and the fixing hole are fixedly connected through the first screw.

2. An injection mold straight-top fixing structure as claimed in claim 1, wherein the cross-sectional profile includes a straight line section and a circular arc section, and one end of the straight line section is connected with one end of the circular arc section.

3. An injection mold straight top fixing structure as claimed in claim 2, wherein the central angle of the circular arc section is greater than 180 °, and the other end of the straight section is connected with the other end of the circular arc section.

4. An injection mold straight top fixing structure as claimed in claim 1, wherein the upper end surface of the ejector rod abuts against the straight top block.

5. An injection mold straight top fixing structure as claimed in claim 1, wherein the axis of the fixing hole coincides with the axis of the ejector pin.

6. An injection mold straight top fixing structure as claimed in claim 1, wherein the first screw is a socket head cap screw, and the fixing hole is matched with the socket head cap screw.

7. An injection mold straight top fixing structure as claimed in claim 1, wherein the other end of the ejector rod is provided with a threaded hole for fixedly connecting with a rear mold core of a mold.