Demolding mechanism of die-casting die

Abstract

The utility model provides a demoulding mechanism of a die-casting die, which comprises a demoulding assembly, the demoulding assembly comprises two demoulding cylinders, a limit rod, a jacking spring, a wedge block, two push blocks, an inner slide block, four side slide blocks, a middle slide block, two stop blocks, a connecting seat and four connecting rods; the two push blocks are symmetrically and fixedly connected to air cylinder shafts of the two demolding air cylinders. The middle sliding block, the inner sliding block and the side sliding block form the mold core of the mold, the inner wall of a product is in contact with the side sliding block, the inner sliding block and the middle sliding block during die-casting forming, the contact area of the sliding blocks and the formed product is reduced through the arrangement of the multiple sliding blocks, the middle sliding block is demolded firstly, then the inner sliding block is demolded, and the mold core of the mold is formed. The side sliding block is separated from a formed product, large binding force does not exist between the sliding block and the formed product through multi-time demolding, then the product cannot be driven to be pulled, the formed product cannot be displaced and damaged, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to a mechanism, in particular to a demoulding mechanism of a die-casting die, belonging to the technical field of dies. Background Art

[0002] Die-casting molds are tools for casting metal parts. They are used on special die-casting forging machines to complete the die-casting process. Die-casting molds are widely used in many industries, such as automobile manufacturing, internal combustion engine production, motorcycle manufacturing, electric motor manufacturing, oil pump manufacturing, transmission machinery manufacturing, construction, hardware, equipment, machine tools, ships, aerospace, etc. Its advantage is that it can manufacture metal parts with complex shapes, clear contours, thin walls and deep cavities, and the precision of die-casting parts is high. They can be assembled and used after only a small amount of mechanical processing. Some die-casting parts can even be assembled and used directly.

[0003] The die-casting mold is the main production equipment for automobile parts. In order to form the more complex inner cavity or inner hole structure on the automobile parts, a slider core pulling structure is often provided in the die-casting mold. When the mold is demolded, the slider needs to be separated from the molded product. In the prior art, the contact area between the slider and the molded product is relatively large, and thus the bonding force between the slider and the product is relatively large during demolding, which will cause the slider to pull the product when it retreats for demolding. If the product is displaced, it will cause product damage. Therefore, a demolding mechanism for a die-casting mold is proposed. Utility Model Content

[0004] In view of this, the utility model provides a demoulding mechanism for a die-casting mold to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the embodiment of the utility model is implemented as follows: a demoulding mechanism of a die-casting mold, including a demoulding assembly, wherein the demoulding assembly includes two demoulding cylinders, a limit rod, a lifting spring, a wedge block, two push blocks, an inner slide block, four side slide blocks, a middle slide block, two stop blocks, a connecting seat and four connecting rods;

[0006] The two push blocks are symmetrically fixedly connected to the cylinder shafts of the two demolding cylinders, one end of the four connecting rods is symmetrically rotationally connected to the outer wall of the middle slider, the other end of the connecting rod is rotationally connected to one side of the connecting seat, the connecting seat is fixedly connected to the inner slider, the two stop blocks are symmetrically fixedly connected to the upper surface and lower surface of the inner slider, the wedge block is fixedly connected to the lower surface of the middle slider, the wedge block is slidably connected to the outer wall of the limit rod, and the lifting spring is sleeved on the outer wall of the limit rod.

[0007] Further preferably, the four side sliders are symmetrically fitted to the outer side wall of the middle slider, and the middle slider and the four side sliders constitute a core of the mold.

[0008] Further preferably, a slide groove and an avoidance groove are provided inside the side slide block, the slide groove is communicated with the avoidance groove, and two limit grooves are symmetrically provided on the outer side wall of the side slide block, and the limit grooves are communicated with the slide groove.

[0009] Further preferably, the inner sliding block and the connecting seat are both slidably connected to the inner side wall of the sliding groove, and the outer side wall of the stopper is slidably connected to the inner side wall of the limiting groove.

[0010] Further preferably, adjacent surfaces of the two push blocks are attached to two sides of the wedge-shaped block, and the shape of the push block corresponds to the shape of the wedge-shaped block.

[0011] Further preferably, a lower mold assembly is installed outside the side slide, and the lower mold assembly includes a lower mold, four guide sleeves and a mold cavity;

[0012] The four guide sleeves are symmetrically mounted on the upper surface of the lower mold, and the mold cavity is opened on the upper surface of the lower mold.

[0013] Further preferably, a mounting cavity communicating with the mold cavity is provided inside the lower mold, the side slider and the middle slider are both located inside the mold cavity, and the side slider is slidably connected to the inside of the lower mold.

[0014] Further preferably, the two demoulding cylinders are symmetrically installed on both sides of the lower mold, the bottom end of the limit rod is fixedly connected to the inner bottom wall of the lower mold, and the two ends of the lifting spring respectively support the inner bottom wall of the lower mold and the lower surface of the wedge block, and the wedge block and the push block are both located inside the lower mold.

[0015] Due to the adoption of the above technical scheme, the embodiment of the utility model has the following advantages: the utility model forms a mold core through a middle slider, an inner slider and a side slider. During die-casting, the inner wall of the product contacts the side slider, the inner slider and the middle slider respectively. By setting a plurality of sliders, the contact area between the sliders and the molded product is reduced. During demolding, the middle slider moves downward first, so that the middle slider can be demolded first, and then the middle slider drives the inner slider to demold through the connecting rod. The inner slider drives the side slider to move downward with the middle slider through the stopper, so that the side slider can be separated from the molded product. Through demolding in stages, there will be no large bonding force between the slider and the molded product, and thus the product will not be pulled, and the molded product will not be displaced and damaged, thereby improving the quality of the product.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 creative work.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a structural diagram of the demoulding component of the utility model;

[0020] Figure 3 This is a structural diagram of the middle slider of the utility model;

[0021] Figure 4 This is a structural diagram of the side slider of the utility model.

[0022] 1. Demolding assembly; 2. Demolding cylinder; 3. Limit rod; 4. Lifting spring; 5. Wedge block; 6. Push block; 7. Inner slider; 8. Side slider; 9. Middle slider; 10. Stop block; 11. Connecting seat; 12. Connecting rod; 13. Slide groove; 14. Avoidance groove; 15. Lower mold assembly; 16. Lower mold; 17. Guide sleeve; 18. Mold cavity. DETAILED DESCRIPTION

[0023] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0024] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-4 As shown, the embodiment of the utility model provides a demoulding mechanism of a die-casting mold, including a demoulding assembly 101, the demoulding assembly 101 includes two demoulding cylinders 11, a limit rod 12, a lifting spring 13, a wedge block 14, two push blocks 15, an inner slider 16, four side sliders 17, a middle slider 18, two stoppers 19, a connecting seat 20 and four connecting rods 21;

[0026] The two push blocks 15 are symmetrically fixedly connected to the cylinder shafts of the two demolding cylinders 11, one end of the four connecting rods 21 is symmetrically rotationally connected to the outer wall of the middle slider 18, the other end of the connecting rod 21 is rotationally connected to one side of the connecting seat 20, the connecting seat 20 is fixedly connected to the inner slider 16, the two stoppers 19 are symmetrically fixedly connected to the upper and lower surfaces of the inner slider 16, the wedge block 14 is fixedly connected to the lower surface of the middle slider 18, the wedge block 14 is slidably connected to the outer wall of the limit rod 12, and the lifting spring 13 is sleeved on the outer wall of the limit rod 12.

[0027] In one embodiment, the four side sliders 17 are symmetrically fitted to the outer wall of the middle slider 18, and the middle slider 18 and the four side sliders 17 constitute the core of the mold. When the product is die-cast, the inner wall of the product contacts the side slider 17, the inner slider 16 and the middle slider 18 respectively. By setting multiple sliders, the contact area between the sliders and the molded product is reduced.

[0028] In one embodiment, a slide groove 22 and an avoidance groove 24 are provided inside the side slider 17, and the slide groove 22 is connected to the avoidance groove 24. Two limit grooves 23 are symmetrically provided on the outer wall of the side slider 17, and the limit groove 23 is connected to the slide groove 22. The inner slider 16 and the connecting seat 20 are both slidably connected to the inner wall of the slide groove 22, and the outer wall of the stopper 19 is slidably connected to the inner wall of the limit groove 23. The adjacent surfaces of the two push blocks 15 are attached to the two sides of the wedge block 14, and the shape of the push block 15 corresponds to the shape of the wedge block 14. When the demolding cylinder 11 pushes the push block 15, the inclined surface of the push block 15 pushes the inclined surface of the wedge block 14, and the wedge block 14 drives the middle slider 18 to move downward, and the molded product can be demolded at this time.

[0029] In one embodiment, a lower mold assembly 301 is installed outside the side slide 17, and the lower mold assembly 301 includes a lower mold 31, four guide sleeves 32 and a mold cavity 33;

[0030] Four guide sleeves 32 are symmetrically installed on the upper surface of the lower mold 31. The mold cavity 33 is opened on the upper surface of the lower mold 31. The interior of the lower mold 31 is provided with an installation cavity connected to the mold cavity 33. The side slider 17 and the middle slider 18 are both located inside the mold cavity 33. The side slider 17 is slidably connected to the interior of the lower mold 31. The mold core composed of the side slider 17 and the middle slider 18 can form the product with the cooperation of the mold cavity 33.

[0031] In one embodiment, two demolding cylinders 11 are symmetrically installed on both sides of the lower mold 31, the bottom end of the limiting rod 12 is fixedly connected to the inner bottom wall of the lower mold 31, and the two ends of the lifting spring 13 respectively support the inner bottom wall of the lower mold 31 and the lower surface of the wedge block 14, the wedge block 14 and the push block 15 are both located inside the lower mold 31, and the wedge block 14 is pushed upward by the lifting spring 13, and the wedge block 14 pushes the middle slider 18, and the middle slider 18 drives the inner slider 16 through the connecting rod 21, and the inner slider 16 drives the side slider 17 through the stop block 19, which can be combined into a mold core.

[0032] When the utility model is working, the upper mold and the lower mold 31 are molded together to perform the die-casting operation. After the die-casting is completed, the upper mold and the lower mold 31 are separated, and the product formed in the mold cavity 33 is demolded. The demolding cylinder 11 pushes the push block 15, and the push block 15 pushes the wedge block 14. After the wedge block 14 is pushed, the middle slider 18 moves downward, so that the middle slider 18 can be demolded first, and then the middle slider 18 pulls the connecting rod 21, and the connecting rod 21 pulls the connecting seat 20, and the connecting seat 20 drives the inner slider 16 to move to a position close to the center of the mold, so that The inner slider 16 is separated from the molded product. When the inner slider 16 moves, it drives the stopper 19 to slide in the limit groove 23. When the stopper 19 is close to the side of the middle slider 18 and contacts the side slider 17, the side slider 17 moves downward with the middle slider 18, so that the side slider 17 can be separated from the molded product. At this time, the molded product is demoulded. Through demoulding in stages, there will be no large bonding force between the slider and the molded product, and the product will not be pulled, and the molded product will not be displaced and damaged, thereby improving the quality of the product.

[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A demoulding mechanism for a die-casting mold, comprising a demoulding assembly (101), characterized in that: The demoulding assembly (101) comprises two demoulding cylinders (11), a limiting rod (12), a lifting spring (13), a wedge block (14), two push blocks (15), an inner slide block (16), four side slide blocks (17), a middle slide block (18), two stop blocks (19), a connecting seat (20) and four connecting rods (21); The two push blocks (15) are symmetrically fixedly connected to the cylinder shafts of the two demoulding cylinders (11); one end of the four connecting rods (21) is symmetrically rotationally connected to the outer wall of the middle slider (18); the other end of the connecting rod (21) is rotationally connected to one side of the connecting seat (20); the connecting seat (20) is fixedly connected to the inner slider (16); the two stoppers (19) are symmetrically fixedly connected to the upper surface and the lower surface of the inner slider (16); the wedge block (14) is fixedly connected to the lower surface of the middle slider (18); the wedge block (14) is slidably connected to the outer wall of the limiting rod (12); and the lifting spring (13) is sleeved on the outer wall of the limiting rod (12).

2. The demoulding mechanism of a die-casting mold according to claim 1, characterized in that: The four side sliders (17) are symmetrically fitted to the outer side wall of the middle slider (18), and the middle slider (18) and the four side sliders (17) form a mold core of the mold.

3. The demoulding mechanism of a die-casting mold according to claim 2, characterized in that: A slide groove (22) and an avoidance groove (24) are provided inside the side slide block (17), the slide groove (22) is communicated with the avoidance groove (24), and two limit grooves (23) are symmetrically provided on the outer side wall of the side slide block (17), the limit grooves (23) are communicated with the slide groove (22).

4. The demoulding mechanism of a die-casting mold according to claim 3, characterized in that: The inner slide block (16) and the connecting seat (20) are both slidably connected to the inner side wall of the slide groove (22), and the outer side wall of the stop block (19) is slidably connected to the inner side wall of the limiting groove (23).

5. The demoulding mechanism of a die-casting mold according to claim 1, characterized in that: The adjacent surfaces of the two push blocks (15) are attached to the two sides of the wedge block (14), and the shape of the push blocks (15) corresponds to the shape of the wedge block (14).

6. The demoulding mechanism of a die-casting mold according to claim 3, characterized in that: A lower mold assembly (301) is installed outside the side slider (17), and the lower mold assembly (301) includes a lower mold (31), four guide sleeves (32) and a mold cavity (33); The four guide sleeves (32) are symmetrically mounted on the upper surface of the lower mold (31), and the mold cavity (33) is opened on the upper surface of the lower mold (31).

7. A demoulding mechanism for a die-casting mold according to claim 6, characterized in that: The lower mold (31) is provided with a mounting cavity connected to the mold cavity (33), the side slider (17) and the middle slider (18) are both located inside the mold cavity (33), and the side slider (17) is slidably connected to the inside of the lower mold (31).

8. The demoulding mechanism of a die-casting mold according to claim 7, characterized in that: The two demoulding cylinders (11) are symmetrically installed on both sides of the lower mold (31), the bottom end of the limiting rod (12) is fixedly connected to the inner bottom wall of the lower mold (31), and the two ends of the lifting spring (13) respectively support the inner bottom wall of the lower mold (31) and the lower surface of the wedge block (14), and the wedge block (14) and the push block (15) are both located inside the lower mold (31).

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