High-sealing-performance die-casting die

Abstract

The embodiment of the utility model provides a high-sealing-performance die-casting die, and relates to the technical field of die-casting dies. Comprising a lower mold and an upper mold which are matched with each other, the lower mold is arranged on a base, a sealing frame is arranged outside the lower mold, and a sealing groove is annularly formed in the side wall of the sealing frame; a lower pressing seat is arranged at the top of the upper die, the top of the lower pressing seat is connected with the hydraulic mechanism, and a sealing ring structure is annularly arranged at the bottom of the lower pressing seat and matched with the sealing groove; an exhaust channel is arranged in the lower pressing seat and communicated with an exhaust hole in the upper die, and a one-way exhaust structure is arranged at the end, close to the side wall of the lower pressing seat, of the exhaust channel. The exhaust effect can be improved while the high sealing performance is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of die casting moulds, in particular to a high-sealing die casting mould. Background Art

[0002] Die casting molds are an important tool for casting metal parts in factories. The basic process of die casting is that the molten metal is first cast into the mold cavity at a low speed or high speed. The mold has a movable cavity surface, which is pressurized and forged as the molten metal cools down, which not only eliminates the shrinkage and porosity defects of the blank, but also makes the internal structure of the blank reach the broken grains of the forged state, thereby significantly improving the comprehensive mechanical properties of the blank.

[0003] At present, during the processing of traditional die-casting molds, the exhaust holes in the molds are not vented smoothly, which easily leads to bubbles and pores on the die-casting parts. However, the molds with better exhaust have poor sealing performance, which easily causes the workpiece raw material to leak during die-casting. Utility Model Content

[0004] In view of the above problems, embodiments of the present invention are proposed to provide a high-sealing die-casting mold that overcomes the above problems or at least partially solves the above problems.

[0005] A high-sealing die-casting mold, comprising a lower mold and an upper mold adapted to each other, wherein the lower mold is placed on a base, a sealing frame is provided on the outer side of the lower mold, and a sealing groove is provided on the side wall of the sealing frame;

[0006] A lower press seat is provided on the top of the upper mold, the top of the lower press seat is connected to the hydraulic mechanism, and a sealing ring structure is provided on the bottom ring of the lower press seat, and the sealing ring structure is adapted to the sealing groove; an exhaust channel is provided in the lower press seat, and the exhaust channel is connected to the exhaust hole in the upper mold, and a one-way exhaust structure is provided at the end of the exhaust channel close to the side wall of the lower press seat.

[0007] Preferably, the one-way exhaust structure includes an exhaust groove, a baffle and a compression spring, the exhaust groove is opened on the side wall of the lower pressure seat and is connected to the exhaust channel, the baffle is sealed to the exhaust groove, and one end of the baffle is hinged to one side of the exhaust groove, and the other end of the baffle is abutted against the inner wall of the exhaust groove; the compression spring is connected between the outer side of the baffle and the inner wall of the exhaust groove and is close to the hinged end of the baffle.

[0008] Preferably, the inner wall of the exhaust groove away from the hinged end of the baffle is stepped and limits the inner side of the baffle so that the baffle does not tilt inward.

[0009] Preferably, the sealing frame is composed of a fixed half frame and a movable half frame, the fixed half frame is fixed to the base, the movable half frame is slidably connected to the base, and one side of the movable half frame is connected to a clamping mechanism, and the clamping mechanism is arranged on the base.

[0010] Preferably, the base is provided with a limiting member, and the movable half frame is slidably arranged on the limiting member.

[0011] Preferably, at least two groups of the clamping mechanisms are provided, and the two groups of the clamping mechanisms are arranged horizontally at intervals.

[0012] Preferably, the clamping mechanism comprises a hydraulic rod and a pressing plate, the hydraulic rod is mounted on the base, the pressing plate is connected to the telescopic end of the hydraulic rod, and the pressing plate is connected to the side wall of the sealing frame.

[0013] Preferably, the sealing groove is in a stepped shape with a lower outside and a higher inside, and the sealing ring structure is in a stepped shape adapted to the sealing groove. The sealing ring structure includes a first sealing ring and a second sealing ring, wherein the first sealing ring is located on the outer ring of the second sealing ring.

[0014] Preferably, the baffle has a thickness of 0.5 cm-2 cm.

[0015] Preferably, the sealing ring is made of high-strength silicone rubber.

[0016] The present application specifically includes the following advantages:

[0017] In the embodiment of the present application, through the mutually adapted lower mold and upper mold, the lower mold is placed on the base, the outer side of the lower mold is provided with a sealing frame, and the side wall of the sealing frame is provided with a sealing groove; the top of the upper mold is provided with a lower press seat, the top of the lower press seat is connected to the hydraulic mechanism, and the bottom of the lower press seat is provided with a sealing ring structure, and the sealing ring structure is adapted to the sealing groove; the lower press seat is provided with an exhaust channel, the exhaust channel is connected to the exhaust hole in the upper mold, and the end of the exhaust channel near the side wall of the lower press seat is provided with a one-way exhaust structure. The sealing ring structure of the lower press seat is adapted to be connected with the sealing groove of the sealing frame, so that a high sealing structure is formed on the peripheral side after the upper mold and the lower mold are closed; the exhaust channel opened in the lower press seat is connected with the exhaust hole of the upper mold, and the gas flows into the exhaust channel from the exhaust hole when the mold is closed, and finally discharged from the one-way exhaust structure, and the one-way exhaust structure prevents external gas from entering the interior from the exhaust channel, thereby improving the sealing performance. The present application can improve the exhaust effect while ensuring high sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 A cross-sectional view of a high-sealing die-casting mold provided by an embodiment of the utility model;

[0020] Figure 2 For this utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 3 A schematic structural diagram of the lower mold provided in an embodiment of the utility model.

[0022] Attached figures: 10, lower mold; 20, upper mold; 30, base; 31, limiter; 40, sealing frame; 41, fixed half frame; 42, movable half frame; 43, sealing groove; 50, lower pressure seat; 51, exhaust channel; 52, one-way exhaust structure; 53, exhaust groove; 54, baffle; 55, compression spring; 60, hydraulic mechanism; 70, sealing ring structure; 71, first sealing ring; 72, second sealing ring; 80, clamping mechanism; 81, hydraulic rod; 82, pressure plate. DETAILED DESCRIPTION

[0023] In order to make the objects, features and advantages of the present application more obvious and understandable, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] Reference Figure 1-Figure 3 , shows a high-sealing die-casting mold of the utility model, which includes a lower mold 10 and an upper mold 20 adapted to each other, the lower mold 10 is placed on a base 30, a sealing frame 40 is provided on the outer side of the lower mold 10, and a sealing groove 43 is provided on the side wall of the sealing frame 40;

[0025] A lower press seat 50 is provided on the top of the upper mold 20, and the top of the lower press seat 50 is connected to the hydraulic mechanism 60. A sealing ring structure 70 is provided on the bottom ring of the lower press seat 50, and the sealing ring structure 70 is adapted to the sealing groove 43. An exhaust channel 51 is provided in the lower press seat 50, and the exhaust channel 51 is connected to the exhaust hole in the upper mold 20. A one-way exhaust structure 52 is provided at the end of the exhaust channel 51 close to the side wall of the lower press seat 50.

[0026] In an embodiment of the present application, through a lower mold 10 and an upper mold 20 that are adapted to each other, the lower mold 10 is placed on a base 30, a sealing frame 40 is provided on the outer side of the lower mold 10, and a sealing groove 43 is provided on the side wall of the sealing frame 40; a lower pressure seat 50 is provided on the top of the upper mold 20, the top of the lower pressure seat 50 is connected to a hydraulic mechanism 60, and a sealing ring structure 70 is provided on the bottom of the lower pressure seat 50, and the sealing ring structure 70 is adapted to the sealing groove 43; an exhaust channel 51 is provided in the lower pressure seat 50, and the exhaust channel 51 is connected to the exhaust hole in the upper mold 20, and a one-way exhaust structure 52 is provided at the end of the exhaust channel 51 close to the side wall of the lower pressure seat 50. The sealing ring structure 70 of the lower pressing seat 50 is adapted and connected with the sealing groove 43 of the sealing frame 40, so that a high sealing structure is formed on the peripheral side of the upper mold 20 and the lower mold 10 after the mold is closed; the exhaust channel 51 opened in the lower pressing seat 50 is connected with the exhaust hole of the upper mold 20, and when the mold is closed, the gas flows into the exhaust channel 51 from the exhaust hole, and finally discharged from the one-way exhaust structure 52, and the one-way exhaust structure 52 prevents external gas from entering the interior from the exhaust channel 51, thereby improving the sealing performance. The present application can improve the exhaust effect while ensuring high sealing performance.

[0027] Next, the high sealing property die casting mold in this exemplary embodiment will be further described.

[0028] In the embodiment of the present application, the lower mold 10 is placed on the base 30, and a sealing frame 40 is provided on the outer side of the lower mold 10. The height of the sealing frame 40 is higher than that of the lower mold 10, so that the sealing performance of the upper mold 20 and the lower mold 10 can be improved when the mold is closed and sealed. The side wall of the sealing frame 40 is provided with a sealing groove 43. A lower press seat 50 is provided on the top of the upper mold 20, and the top of the lower press seat 50 is connected to a hydraulic mechanism 60. The lower press seat 50 is driven by the hydraulic mechanism 60 to drive the upper mold 20 to move up and down to achieve mold closing and mold opening; a sealing ring structure 70 is provided on the bottom of the lower press seat 50, and the sealing ring structure 70 is adapted to the sealing groove 43. When the upper mold 20 and the lower mold 10 are closed, the sealing ring structure 70 is embedded in the sealing groove 43, and an annular seal is formed around the upper mold 20 and the lower mold 10, so that it is difficult for outside air to enter the mold; An exhaust channel 51 is provided in the lower press seat 50, and the exhaust channel 51 is connected to the exhaust hole in the upper mold 20. A one-way exhaust structure 52 is provided at the end of the exhaust channel 51 close to the side wall of the lower press seat 50. During die casting, the gas in the upper mold 20 and the lower mold 10 flows into the exhaust channel 51 through the exhaust hole of the upper mold 20, and flows out from the one-way exhaust structure 52 along the exhaust channel 51 to achieve exhaust. Under the action of the one-way exhaust structure 52, external air cannot enter the interior of the mold from the channel, thereby improving the sealing of the mold.

[0029] As an example, the one-way exhaust structure 52 includes an exhaust groove 53, a baffle 54 and a compression spring 55. The exhaust groove 53 is opened on the side wall of the lower press seat 50 and communicates with the exhaust channel 51. The exhaust groove 53 is set on the side wall of the lower press seat 50 to avoid being set on the top or bottom and being affected by the hydraulic mechanism 60. The baffle 54 is sealed in the exhaust groove 53, and one end of the baffle 54 is hinged to one side of the exhaust groove 53, and the other end of the baffle 54 is in contact with the inner wall of the exhaust groove 53; the compression spring 55 is connected between the outer side of the baffle 54 and the inner wall of the exhaust groove 53 and close to the hinged end of the baffle 54. When gas is discharged from the inside, the gas pressure pushes the baffle 54 to rotate and tilt outward, and a gap is generated between one end of the baffle 54 and the exhaust groove 53 for gas to be discharged; when no gas is discharged, the baffle 54 is sealed in the exhaust groove 53 under the compression of the compression spring 55, so that external gas cannot enter, thereby improving the sealing of the mold. The thickness of the baffle 54 is 0.5cm-2cm, and the thickness of the baffle 54 is set to be relatively thin, so that the internal air pressure can be greater than the strength of the baffle 54, so that it rotates and tilts outward.

[0030] Furthermore, the inner wall of the exhaust groove 53 away from the hinged end of the baffle 54 is stepped and limits the inner side of the baffle 54 so that the baffle 54 does not tilt inward. Figure 2 As shown, the stepped inner wall abuts against the inner side of the baffle 54, so that the baffle 54 cannot rotate inward, thereby preventing external air from entering.

[0031] As an example, the sealing groove 43 is in a stepped shape with a lower outside and a higher inside, and the sealing ring structure 70 is in a stepped shape adapted to the sealing groove 43. The sealing ring structure 70 includes a first sealing ring 71 and a second sealing ring 72, wherein the first sealing ring 71 is located on the outer ring of the second sealing ring 72. By setting the sealing ring structure 70 as a double seal, the sealing performance is improved, and the outer sealing groove 43 is lower than the inner sealing groove 43, so that it is difficult for external air to enter the mold, thereby greatly improving the sealing performance.

[0032] As an example, the sealing ring is made of high-strength silicone rubber material, which has a better sealing effect.

[0033] In the embodiment of the present application, the sealing frame 40 is formed by splicing a fixed half frame 41 and a movable half frame 42, wherein the fixed half frame 41 is fixed to the base 30, and the movable half frame 42 is slidably connected to the base 30, and one side of the movable half frame 42 is connected to a clamping mechanism 80, and the clamping mechanism 80 is provided on the base 30. By setting the sealing frame 40 as two half frames spliced ​​and connected, and clamping by the clamping mechanism 80, the movable half frame 42 can be separated from the fixed half frame 41 when the mold is opened, thereby facilitating demoulding of the casting, and preventing the height of the sealing frame 40 from being too high, thereby preventing the demoulding of the casting in the lower mold 10.

[0034] As an example, the base 30 is provided with a limiter 31, and the movable half frame 42 is slidably arranged on the limiter 31. The limiter 31 can be two limiter bars, which are respectively arranged on both sides of the movable half frame 42, and play a limiting role in the movement of the movable half frame 42, so that it moves along the limiter bar and can be accurately spliced ​​with the fixed half frame 41. The limiter 31 can also be a slide rail, which is arranged in the groove of the base 30, and the movable half frame 42 is slidably arranged on the slide rail, so that the displacement of the movable half frame 42 can move along the direction of the slide rail and the movable half frame 42 and the fixed half frame 41 can be located in the same horizontal plane, so as to achieve rapid splicing.

[0035] As an example, at least two groups of the clamping mechanisms 80 are provided, and the two groups of the clamping mechanisms 80 are arranged horizontally and spaced apart. Providing multiple groups of clamping mechanisms 80 can evenly disperse the clamping force on the movable half frame 42, thereby improving the fit between the movable half frame 42 and the fixed half frame 41.

[0036] As an example, the clamping mechanism 80 includes a hydraulic rod 81 and a pressing plate 82, wherein the hydraulic rod 81 is mounted on the base 30, the pressing plate 82 is connected to the telescopic end of the hydraulic rod 81, and the pressing plate 82 is connected to the side wall of the sealing frame 40. By setting the pressing plate 82 to be connected to the side wall of the movable half frame 42, the force application area of ​​the movable half frame 42 is increased, the uniformity of the clamping force can be further improved, and the fit between the movable half frame 42 and the fixed half frame 41 can be improved.

[0037] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0038] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0039] The above is a detailed introduction to a high-sealing die-casting mold provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model; at the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A high-sealing die-casting mold, comprising a lower mold and an upper mold adapted to each other, characterized in that: The lower mold is placed on the base, a sealing frame is provided on the outer side of the lower mold, and a sealing groove is provided on the side wall of the sealing frame; A lower press seat is provided on the top of the upper mold, the top of the lower press seat is connected to the hydraulic mechanism, and a sealing ring structure is provided on the bottom ring of the lower press seat, and the sealing ring structure is adapted to the sealing groove; an exhaust channel is provided in the lower press seat, and the exhaust channel is connected to the exhaust hole in the upper mold, and a one-way exhaust structure is provided at the end of the exhaust channel close to the side wall of the lower press seat.

2. The high-sealing die-casting mold according to claim 1, characterized in that: The one-way exhaust structure includes an exhaust groove, a baffle and a compression spring. The exhaust groove is opened on the side wall of the lower pressure seat and is connected to the exhaust channel. The baffle is sealed in the exhaust groove, and one end of the baffle is hinged to one side of the exhaust groove, and the other end of the baffle is abutted against the inner wall of the exhaust groove; the compression spring is connected between the outer side of the baffle and the inner wall of the exhaust groove and is close to the hinged end of the baffle.

3. The high-sealing die-casting mold according to claim 2, characterized in that: The inner wall of the exhaust groove away from the hinged end of the baffle is stepped and limits the inner side of the baffle so that the baffle will not tilt inward.

4. The high-sealing die-casting mold according to claim 1, characterized in that: The sealing frame is composed of a fixed half frame and a movable half frame, the fixed half frame is fixed to the base, the movable half frame is slidably connected to the base, and one side of the movable half frame is connected to a clamping mechanism, and the clamping mechanism is arranged on the base.

5. The high-sealing die-casting mold according to claim 4, characterized in that: The base is provided with a limiting piece, and the movable half frame is slidably arranged on the limiting piece.

6. The high-sealing die-casting mold according to claim 4, characterized in that: At least two groups of the clamping mechanisms are provided, and the two groups of the clamping mechanisms are arranged horizontally and spaced apart.

7. The high-sealing die-casting mold according to claim 4 or 6, characterized in that: The clamping mechanism comprises a hydraulic rod and a pressing plate, wherein the hydraulic rod is mounted on the base, the pressing plate is connected to the telescopic end of the hydraulic rod, and the pressing plate is connected to the side wall of the sealing frame.

8. The high-sealing die-casting mold according to claim 1, characterized in that: The sealing groove is in a stepped shape with a lower outside and a higher inside, the sealing ring structure is in a stepped shape adapted to the sealing groove, and the sealing ring structure comprises a first sealing ring and a second sealing ring, wherein the first sealing ring is located on the outer ring of the second sealing ring.

9. The high-sealing die-casting mold according to claim 2, characterized in that: The thickness of the baffle is 0.5cm-2cm.

10. The high-sealing die-casting mold according to claim 1, characterized in that: The sealing ring is made of high-strength silicone rubber.

Images