Pull rod structure of die-casting die for producing new energy automobile parts

Abstract

The utility model relates to the technical field of die-casting dies, and provides a pull rod structure of a die-casting die for producing new energy automobile parts, which comprises a pull rod body, a first threaded end and a second threaded end, the first fastener is connected to the ejection mechanism and is in threaded connection with the second threaded end; the second fastener is in threaded connection with the second threaded end and movably abuts against the first fastener; when the first fastener and the second fastener abut against each other, static friction force parallel to the tangential direction of the outer circumference of the second threaded end is applied to the pull rod body. Compared with the prior art, the pull rod has the advantages that when the first fastening piece is in contact with the second fastening piece, static friction force which is transmitted to the pull rod body in the direction parallel to the tangential direction of the outer circumference of the second threaded end can prevent the pull rod body from rotating due to shaking in the working process; therefore, the effect of preventing the pull rod body from being separated from the ejection mechanism is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting dies, in particular to a pull rod structure of a die-casting die for producing new energy vehicle parts. Background Art

[0002] The tie rod structure on a die-casting mold generally refers to the rod that connects the ejection system of the die-casting mold to the die-casting machine. The ejection system on the die-casting machine uses the tie rod structure to drive the ejection mechanism to move on the die-casting mold, thereby ejecting the workpiece from the mold.

[0003] Traditionally, the tie rod structure and ejector mechanism are typically connected via a threaded connection: the tie rod structure has external threads, while the ejector mechanism has matching internal threads. As the die-casting mold cycles through the production process, the tie rod structure also reciprocates along its axis. However, over time, due to play in the threads connecting the tie rod and ejector structure, the two structures may become loose. If a loose tie rod structure is not discovered and addressed promptly, the die-casting machine could continue to move the loose tie rod structure, potentially causing it to collide with the die, potentially damaging both the tie rod structure and the die. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a pull rod structure of a die-casting mold for producing new energy vehicle parts in response to the current status of the existing technology.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: to propose a tie rod structure for a die-casting mold for producing new energy vehicle parts, wherein the die-casting mold has an ejection mechanism for ejecting a molded workpiece, and the tie rod structure is used to connect the ejection mechanism with a die-casting machine, comprising:

[0006] a pull rod body having a first threaded end and a second threaded end oppositely disposed, wherein the first threaded end is connected to the die-casting machine, and the second threaded end is threadedly connected to the ejection mechanism;

[0007] a first fastener connected to the ejection mechanism and threadedly connected to the second threaded end;

[0008] a second fastener, threadedly connected to the second threaded end and movably abutting against the first fastener;

[0009] The first fastener and the second fastener are configured to apply a static friction force parallel to the tangent direction of the outer circumference of the second threaded end to the pull rod body when they are pressed against each other.

[0010] In the above-mentioned pull rod structure of a die-casting mold for producing new energy vehicle parts, the first fastener has a convex portion, and the second fastener has a concave portion. When the first fastener and the second fastener are pressed against each other, the convex portion is inserted into the concave portion, and the outer wall of the convex portion is pressed against the inner wall of the concave portion.

[0011] In the above-mentioned pull rod structure of a die-casting mold for producing new energy vehicle parts, the second fastener has a convex portion, and the first fastener has a concave portion. When the first fastener and the second fastener are pressed against each other, the convex portion is inserted into the concave portion, and the outer wall of the convex portion is pressed against the inner wall of the concave portion.

[0012] In the above-mentioned tie rod structure of a die-casting mold for producing new energy vehicle parts, the center line of the convex portion is parallel to but not colinear with the center line of the second threaded end, and the center line of the concave portion coincides with the center line of the second threaded end.

[0013] In the above-mentioned tie rod structure of the die-casting mold for producing new energy vehicle parts, the outer wall of the convex portion and / or the inner wall of the concave portion are in an uneven state.

[0014] In the above-mentioned pull rod structure of a die-casting mold for producing new energy vehicle parts, a threaded sleeve is rotatably connected to the die-casting machine, and the pull rod body is provided with a clamping groove located on one side of the second threaded end. The threaded sleeve is provided with a connecting hole, and one end of the pin passes through the connecting hole and is tightly pressed against the clamping groove.

[0015] Compared with the prior art, the advantage of the present invention is that when the first fastener and the second fastener are in contact, the static friction force is transmitted to the pull rod body in a direction parallel to the tangent direction of the outer circumference of the second threaded end, which can prevent the pull rod body from rotating due to shaking during operation, thereby achieving the effect of preventing the pull rod body from disengaging from the ejection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 yes Figure 1 A three-dimensional image with the threaded sleeve hidden in the middle;

[0018] Figure 3 is a plan view of the first fastener;

[0019] Figure 4 is a perspective view of a second fastener;

[0020] Figure 5 It is a three-dimensional diagram of the threaded sleeve.

[0021] In the figure, 1, pull rod body; 2, first threaded end; 3, second threaded end; 4, first fastener; 5, second fastener; 6, convex portion; 7, concave portion; 8, threaded sleeve; 9, snap-fit groove; 10, connecting hole. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figures 1 to 5 As shown, the utility model is a tie rod structure of a die-casting mold for producing new energy vehicle parts. The die-casting mold has an ejection mechanism for ejecting the molded workpiece. The tie rod structure is used to connect the ejection mechanism with the die-casting machine. The tie rod structure includes: a tie rod body 1, a first fastener 4, a second fastener 5, and a threaded sleeve 8.

[0024] Among them, the pull rod body 1 has a first threaded end 2 and a second threaded end 3 arranged opposite to each other, the first threaded end 2 is connected to the die-casting machine, and the second threaded end 3 is threadedly connected to the ejection mechanism; the first fastener 4 is connected to the ejection mechanism and is threadedly connected to the second threaded end 3; the second fastener 5 is threadedly connected to the second threaded end 3 and is movably pressed against the first fastener 4; the first fastener 4 and the second fastener 5 are configured to apply a static friction force to the pull rod body 1 in a direction parallel to the tangent direction of the outer circumference of the second threaded end 3 when they are pressed against each other.

[0025] The pull rod body 1 can be as follows Figure 1 The cylindrical structure in the figure can also be a structure with a cross section of a triangle, quadrilateral, pentagon or other geometric shape. The first threaded end 2 and the second threaded end 3 can be formed by welding bolts to the two ends of the pull rod body 1, or they can be made in an integral molding manner. The first fastener 4 and the second fastener 5 are both provided with threaded holes that are compatible with the external threads of the second threaded end 3. The connection between the first fastener 4 and the ejection mechanism can be achieved by inlaying. For example, the first fastener 4 is designed as follows. Figure 3 The cross section shown is a hexagonal columnar structure, and a matching hexagonal hole is provided on the ejection mechanism, and then the first fastener 4 is embedded in the hexagonal hole. Of course, the first fastener 4 can also be integrally formed with the ejection mechanism.

[0026] During the connection process, the second fastener 5 is installed on the second threaded end 3 of the rod body 1 and screwed into the threaded hole in the ejection mechanism. Next, the first fastener 4 is inserted into the ejection mechanism to secure it there, and the second fastener 5 is rotated to bring it into close contact with the first fastener 4. The static friction force transmitted to the rod body 1 parallel to the tangent line of the outer circumference of the second threaded end 3 during contact between the first fastener 4 and the second fastener 5 prevents the rod body 1 from rotating due to shaking during operation, thereby preventing the rod body 1 from disengaging from the ejection mechanism.

[0027] The first fastener 4 has a protrusion 6, and the second fastener 5 has a recess 7. When the first fastener 4 and the second fastener 5 are pressed against each other, the protrusion 6 is inserted into the recess 7, and the outer wall of the protrusion 6 is pressed against the inner wall of the recess 7, so as to increase the friction between the first fastener 4 and the second fastener 5 by embedding, thereby increasing the static friction transmitted to the pull rod body 1.

[0028] Of course, the convex portion 6 can also be provided on the second fastener 5, and the concave portion 7 can correspondingly be provided on the first fastener 4. The principles of these two methods are the same and will not be repeated here.

[0029] Furthermore, in this embodiment, the center line of the protrusion 6 is parallel to but not colinear with the center line of the second thread end 3 , and the center line of the recess 7 coincides with the center line of the second thread end 3 .

[0030] By setting the protrusion 6 to an eccentric state relative to the first fastener 4 or the second fastener 5, after the protrusion 6 extends into the recess 7 so that the protrusion 6 and the recess 7 are tightly pressed against each other, the static friction between the recess 7 and the protrusion 6 in the eccentric state is greater, which can better prevent the pull rod body 1 from shaking.

[0031] Preferably, the outer wall of the convex portion 6 and / or the inner wall of the concave portion 7 are in an uneven state.

[0032] The uneven state can be achieved by sandblasting or chemically etching the outer wall of the convex portion 6 and / or the inner wall of the concave portion 7 , the principle of which is also to increase the static friction between the two.

[0033] A threaded sleeve 8 is rotatably connected to the die-casting machine, and a clamping groove 9 is provided on the pull rod body 1 on one side of the second threaded end 3. A connecting hole 10 is provided on the threaded sleeve 8. One end of the pin passes through the connecting hole 10 and is tightly pressed against the clamping groove 9 to strengthen the connection between the pull rod body 1 and the die-casting machine.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship and movement status of the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, terms such as "first," "second," and "an" in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0036] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0037] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them with similar methods, without departing from the scope defined by the spirit of the present invention.

Claims

1. A tie rod structure for a die-casting mold for producing new energy vehicle parts, wherein the die-casting mold has an ejection mechanism for ejecting a molded workpiece, and the tie rod structure is used to connect the ejection mechanism with a die-casting machine, characterized in that: include: a pull rod body having a first threaded end and a second threaded end oppositely disposed, wherein the first threaded end is connected to the die-casting machine, and the second threaded end is threadedly connected to the ejection mechanism; a first fastener connected to the ejection mechanism and threadedly connected to the second threaded end; a second fastener, threadedly connected to the second threaded end and movably abutting against the first fastener; The first fastener and the second fastener are configured to apply a static friction force parallel to the tangent direction of the outer circumference of the second threaded end to the pull rod body when they are pressed against each other.

2. The tie rod structure of a die-casting mold for producing new energy vehicle parts according to claim 1, characterized in that: The first fastener has a convex portion, and the second fastener has a concave portion. When the first fastener and the second fastener are pressed against each other, the convex portion is inserted into the concave portion, and the outer wall of the convex portion is pressed against the inner wall of the concave portion.

3. The tie rod structure of a die-casting mold for producing new energy vehicle parts according to claim 1, characterized in that: The second fastener has a convex portion, and the first fastener has a concave portion. When the first fastener and the second fastener are pressed against each other, the convex portion is inserted into the concave portion, and the outer wall of the convex portion is pressed against the inner wall of the concave portion.

4. A tie rod structure for a die-casting mold for producing new energy vehicle parts according to claim 2 or 3, characterized in that: The center line of the convex portion is parallel to but not colinear with the center line of the second thread end, and the center line of the concave portion coincides with the center line of the second thread end.

5. A tie rod structure for a die-casting mold for producing new energy vehicle parts according to claim 2 or 3, characterized in that: The outer wall of the convex portion and / or the inner wall of the concave portion are in an uneven state.

6. The tie rod structure of a die-casting mold for producing new energy vehicle parts according to claim 1, characterized in that: A threaded sleeve is rotatably connected to the die-casting machine, a clamping groove is provided on the pull rod body at one side of the second threaded end, a connecting hole is provided on the threaded sleeve, one end of the pin passes through the connecting hole and is pressed against the clamping groove.

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