deep-drawn mold

Abstract

The utility model discloses deep cavity mould belongs to mould field, including cover frame, first insert, third insert, first fastener and runner plate, first insert and third insert install in cover frame, third insert is fixedly connected with cover frame through first fastener, and third insert is located between first insert and runner plate, and the top of first insert and third insert top forms the parting surface, and deep cavity mould still includes fourth insert and second fastener, and fourth insert is fixed in runner plate through second fastener and is pressed to third insert, through above -mentioned design, fourth insert exerts the pressure downward to third insert, when runner plate is heated and expands, and the extrusion force of third insert that generates outward and the pressure that offsets downward is avoided, and third insert is twisted, and the influence of runner plate thermal expansion to insert is reduced.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to deep cavity molds. Background Technology

[0002] In integrated die casting production, when the mold cavity is deep, the parting surface at the bottom of the cavity is composed of multiple inserts, which are fixed together by bolts. At least one insert is connected to the runner plate. Molten aluminum enters the cavity through the runner plate, so the molten aluminum first contacts the runner plate. The runner plate expands due to heat, generating an outward squeezing force on the adjacent insert. The insert squeezed by the runner plate will be subjected to an unbalanced torque, causing the insert to twist, the parting surface to lift, and return to its original position when the mold closes. This repeated action will cause the bolts to break prematurely before their expected service life, resulting in mold damage and a short service life. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a deep cavity mold that reduces the impact of thermal expansion of the runner plate on the insert.

[0004] One of the objectives of this utility model is achieved through the following technical solution:

[0005] A deep cavity mold includes a frame, a first insert, a third insert, a first fastener, and a runner plate. The first insert and the third insert are mounted on the frame. The third insert is fixedly connected to the frame by the first fastener and is located between the first insert and the runner plate. The tops of the first insert and the third insert form a parting surface. The deep cavity mold also includes a fourth insert and a second fastener. The fourth insert is fixed to the runner plate by the second fastener and presses against the third insert.

[0006] Furthermore, the top of the third insert, the top of the fourth insert, and the top of the flow channel plate are located on the same plane.

[0007] Furthermore, the contact surface height between the first insert and the third insert is less than the contact surface height between the flow channel plate and the third insert.

[0008] Furthermore, the fourth insert is housed within the flow channel plate and the third insert.

[0009] Furthermore, the side of the fourth insert closest to the flow channel plate is a vertical surface, and the side of the fourth insert closest to the third insert is an inclined surface.

[0010] Furthermore, the inclination angle of the inclined plane is 2°-5°.

[0011] Furthermore, the deep cavity mold also includes a second insert, which is located between the third insert and the sleeve along the height direction, and the first fastener passes through the second insert.

[0012] Furthermore, the deep cavity mold also includes a positioning key, which is installed between the second insert and the third insert.

[0013] Furthermore, the first fastener is a screw.

[0014] Furthermore, the gap between the flow channel plate and the third insert is 0.04mm-0.06mm.

[0015] Compared with the prior art, the deep cavity mold of this utility model also includes a fourth insert and a second fastener. The fourth insert is fixed to the flow channel plate by the second fastener and presses against the third insert. Through the above design, the fourth insert applies downward pressure to the third insert. When the flow channel plate expands due to heat, the outward squeezing force generated on the third insert cancels out the downward pressure, thereby preventing the third insert from twisting and reducing the impact of the thermal expansion of the flow channel plate on the insert. Attached Figure Description

[0016] Figure 1 This is a top view of the deep cavity mold of this utility model;

[0017] Figure 2 for Figure 1 A cross-sectional view of the deep cavity mold along AA.

[0018] In the diagram: 10, frame; 20, first insert; 30, second insert; 40, third insert; 50, flow channel plate; 60, first fastener; 70, positioning key; 80, fourth insert; 90, second fastener. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please see Figures 1 to 2 The deep cavity mold of this utility model includes a frame 10, a first insert 20, a second insert 30, a third insert 40, a flow channel plate 50, a first fastener 60, a positioning key 70, a fourth insert 80, and a second fastener 90.

[0023] The frame 10 is located at the bottom and is used to install the first insert 20, the second insert 30 and the third insert 40.

[0024] The first insert 20, the second insert 30, and the third insert 40 form the parting surface at the bottom of the cavity. Specifically, the tops of the first insert 20 and the third insert 40 form the parting surface, and the shapes of the tops of the first insert 20 and the third insert 40 are designed according to the shape of the cavity. In this embodiment, the top of the first insert 20 is a slope, and the top of the third insert 40 is a slope and a plane connected to the slope. The second insert 30 is located between the third insert 40 and the sleeve 10. The second insert 30 supports the third insert 40. The second insert 30 and the first insert 20 are located on the same horizontal plane, and the height of the second insert 30 is lower than the height of the first insert 20, so the side portion of the first insert 20 contacts the third insert 40.

[0025] The runner plate 50 is located on the other side of the third insert 40. Since the mold is a deep-cavity mold, molten metal is introduced from the bottom of the cavity to increase the injection speed. During injection, the molten metal enters through the runner plate 50, which is the first part to contact the molten metal, thus causing expansion. The runner plate 50 and the third insert 40 are on the same horizontal plane, and the top surfaces of the runner plate 50 and the third insert 40 are on the same plane. The height of the contact surface between the third insert 40 and the runner plate 50 is less than the height of the contact surface between the first insert 20 and the third insert 40. Therefore, when the runner plate 50 expands, it exerts a compressive force on the third insert 40. Because the height of the contact surface between the third insert 40 and the runner plate 50 is less than the height of the contact surface between the first insert 20 and the third insert 40, the force exerted on the side of the third insert 40 closest to the runner plate 50 is directed towards the first insert 20 and is a horizontal force. The combined action of two forces will create a counterclockwise torque.

[0026] The first fastener 60 is installed on the sleeve 10, the second insert 30, and the third insert 40 to fix the sleeve 10, the second insert 30, and the third insert 40 to each other. Due to the presence of torque, the first fastener 60 will be subjected to an upward tensile force, which may cause it to fail. In this embodiment, the first fastener 60 is a screw, which increases the connection strength of the sleeve 10, the second insert 30, and the third insert 40.

[0027] The positioning key 70 is installed between the third insert 40 and the second insert 30. The positioning key 70 enhances the connection strength between the third insert 40 and the second insert 30 and prevents the third insert 40 from twisting.

[0028] The fourth insert 80 is fixed to the runner plate 50 by the second fastener 90 and presses against the third insert 40. Because the fourth insert 80 presses against the third insert 40, it exerts downward pressure on the third insert 40, offsetting the torsional force on the third insert 40. This reduces the tensile force on the first fastener 60, extending its service life. Specifically, both the top of the runner plate 50 and the top of the third insert 40 have grooves that connect. The fourth insert 80 is housed in one of these grooves, and the second fastener 90 is installed on the fourth insert 80 and engages with the runner plate 50. The top of the fourth insert 80 is on the same plane as the top of the runner plate 50 and the top of the third insert 40. The side of the fourth insert 80 closest to the runner plate 50 is a vertical surface, while the side closest to the third insert 40 is an inclined surface, forming a draft structure. The inclination angle of the inclined surface is 2°-5°; in this embodiment, the inclination angle is 3°. The fourth insert 80 is made of beryllium copper C17200, with the hardness reduced to 28-32 HRC through controlled processes. It also features a 3° draft angle to distribute some of the expansion force. The other inserts in the deep cavity mold, as well as the runner plate 50, are made of manganese steel. The addition of the fourth insert 80 balances the forces exerted on the inserts during thermal expansion, allowing them to operate in a more stable state. Furthermore, the lower hardness of the fourth insert 80 provides space for the expansion of other inserts, reducing inter-insert compression and protecting them.

[0029] The gap between the flow channel plate 50 and the adjacent third insert 40 is controlled at 0.05mm, so that the flow channel plate 50 has expansion space.

[0030] This utility model's deep cavity mold incorporates a fourth insert 80 and a second fastener 90. The fourth insert 80 is fixed to the flow channel plate 50 by the second fastener 90 and presses against the third insert 40. Through this design, the fourth insert 80 applies downward pressure to the third insert 40. When the flow channel plate 50 expands due to heat, the outward compressive force generated by the flow channel plate 50 on the third insert 40 cancels out the downward pressure, preventing the third insert 40 from twisting and reducing the impact of the flow channel plate 50's thermal expansion on the insert. The positioning key 70 enhances the connection strength between the third insert 40 and the second insert 30, preventing the third insert 40 from twisting. Therefore, the upward tensile force on the first fastener 60 is reduced, making the first fastener 60 less prone to failure.

[0031] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A deep cavity mold, comprising a frame, a first insert, a third insert, a first fastener, and a runner plate, wherein the first insert and the third insert are mounted on the frame, the third insert is fixedly connected to the frame via the first fastener, the third insert is located between the first insert and the runner plate, and the tops of the first insert and the third insert form a parting surface, characterized in that: The deep cavity mold further includes a fourth insert and a second fastener. The fourth insert is fixed to the flow channel plate by the second fastener and presses against the third insert.

2. The deep cavity mold according to claim 1, characterized in that: The top of the third insert, the top of the fourth insert, and the top of the flow channel plate are located on the same plane.

3. The deep cavity mold according to claim 1, characterized in that: The height of the contact surface between the first insert and the third insert is less than the height of the contact surface between the flow channel plate and the third insert.

4. The deep cavity mold according to claim 1, characterized in that: The fourth insert is housed within the flow channel plate and the third insert.

5. The deep cavity mold according to claim 1, characterized in that: The side of the fourth insert closest to the flow channel plate is a vertical surface, and the side of the fourth insert closest to the third insert is an inclined surface.

6. The deep cavity mold according to claim 5, characterized in that: The inclination angle of the inclined plane is 2°-5°.

7. The deep cavity mold according to claim 1, characterized in that: The deep cavity mold further includes a second insert, which is located between the third insert and the sleeve along the height direction, and the first fastener passes through the second insert.

8. The deep cavity mold according to claim 7, characterized in that: The deep cavity mold also includes a positioning key, which is installed between the second insert and the third insert.

9. The deep cavity mold according to claim 1, characterized in that: The first fastener is a screw.

10. The deep cavity mold according to claim 1, characterized in that: The gap between the flow channel plate and the third insert is 0.04mm-0.06mm.

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