A dynamic pressure equalization buffer mechanism for die casting mold frame

Abstract

A dynamic pressure equalization buffer mechanism for die-casting mold frames is disclosed. This invention relates to the field of die-casting mold frame technology. Buffer cylinders are fixed in an array on the left side of the moving mold. A limit ring is fixed on the inner wall of the left opening of each buffer cylinder. A buffer plate is disposed on the left side of the buffer cylinders, and a buffer groove is formed on the buffer plate. Several buffer rods are fixed at equal intervals on the right side of the buffer plate. The buffer rods are movably inserted into the buffer cylinders, and they are engaged with the limit rings. Buffer holes are formed inside the buffer rods, and the buffer grooves and buffer holes are interconnected. An extrusion plate is movably disposed within the buffer grooves, and it is engaged with the buffer grooves. The extrusion plate extrudes the hydraulic oil in the buffer grooves, generating an initial pre-pressure in the buffer cylinders to buffer the stress generated during production. Furthermore, the hydraulic oil flows through the buffer holes in the buffer cylinders and buffer grooves, evenly distributing the pressure among the several buffer cylinders, achieving dynamic pressure uniformity.

Description

Technical Field

[0001] This utility model relates to the field of die casting mold frame technology, specifically to a dynamic pressure equalization buffer mechanism for die casting mold frames. Background Technology

[0002] During die casting, the mold experiences complex mechanical stress and impact vibrations under the influence of high-speed, high-pressure molten metal filling (injection impact) and enormous mold closing forces. These forces are directly transmitted to the mold base through the mold, easily causing slight elastic or plastic deformation of the mold base (especially the moving mold base plate and support plate). Existing mold bases typically employ a rigid design and lack effective cushioning mechanisms. Therefore, a dynamic pressure balancing and cushioning mechanism for die casting mold bases is urgently needed to address these issues. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of the existing technology by providing a simple, rationally designed, and easy-to-use dynamic pressure equalization buffer mechanism for die-casting mold frames, which can solve the aforementioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a fixed mold and a moving mold; the fixed mold and the moving mold are arranged in abutting configuration, and the moving mold is positioned on the left side of the fixed mold by means of a drive push rod;

[0005] It also includes: several buffer cylinders arranged in an array and fixed on the left side of the moving mold, with a limit ring fixed on the inner wall of the left opening of each buffer cylinder; a buffer plate disposed on the left side of the buffer cylinders, with a buffer groove on the buffer plate, and several buffer rods fixed at equal intervals on the right side of the buffer plate, the buffer rods being movably inserted into the buffer cylinders, the buffer rods engaging with the limit rings, and buffer holes being provided inside the buffer rods, with the buffer grooves and buffer holes communicating with each other; an extrusion plate movably disposed in the buffer grooves, engaging with the buffer grooves, a support frame fixed on the left side of the buffer plate, and the output end of the drive push rod fixedly connected to the support frame; and a limit assembly disposed on the buffer plate, engaging with the extrusion plate.

[0006] Furthermore, the limiting component includes: two limiting plates, which are respectively fixed on the front and rear sides of the support frame, and slots are provided on both the limiting plates and the horizontal plate of the support frame; several abutment frames, which are respectively movably inserted into the slots, and bolts are threaded onto the abutment frames through the side walls of the support frame and the limiting plates; and several abutment pads, which are respectively disposed at the right end of the abutment frames, and the abutment pads are configured to abut against the compression plate.

[0007] Furthermore, a slot is provided at the connection between the support frame and the limiting plate, and the support plate is bolted into the slot.

[0008] Furthermore, a limiting frame is fixed on the inner wall of the buffer groove, and the limiting frame is set to abut against the extrusion plate.

[0009] Furthermore, each of the buffer rods has a groove on its right end, and a sealing ring is fitted inside the groove. The sealing ring is fitted and abuts against the inner wall of the buffer cylinder.

[0010] Furthermore, a positioning frame is fixed on the left side of the moving mold, and a buffer plate is movably inserted into the positioning frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the dynamic pressure equalization buffer mechanism of the die casting mold frame described in this utility model allows hydraulic oil to flow in the buffer groove and buffer cylinder through the buffer hole, so as to evenly distribute the pressure in several buffer cylinders, avoid stress concentration, and prevent mold deformation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the limiting component in this utility model.

[0014] Figure 3 This is a schematic diagram of the extrusion plate and buffer plate in this utility model.

[0015] Figure 4 This is a schematic diagram of the structure of the buffer plate and buffer cylinder in this utility model.

[0016] Figure 5 yes Figure 4 Enlarged view of section A.

[0017] Explanation of reference numerals in the attached drawings: 1. Fixed mold; 2. Moving mold; 3. Buffer cylinder; 4. Limiting ring; 5. Buffer plate; 6. Buffer groove; 7. Buffer rod; 8. Buffer hole; 9. Extrusion plate; 10. Support frame; 11. Limiting assembly; 12. Limiting plate; 13. Slot; 14. Contact frame; 15. Contact pad; 16. Slot; 17. Support plate; 18. Limiting frame; 19. Groove; 20. Sealing ring; 21. Positioning frame. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] like Figures 1-5As shown, this specific embodiment adopts the following technical solution: it includes a fixed mold 1 and a moving mold 2; the fixed mold 1 and the moving mold 2 are arranged in abutting configuration, and the moving mold 2 is arranged on the left side of the fixed mold 1 by means of a drive push rod;

[0020] It also includes:

[0021] The buffer cylinder 3 consists of several cylinders, which are fixed in an array on the left side of the moving mold 2. A limit ring 4 is fixed on the inner wall of the left opening of the buffer cylinder 3. The buffer cylinder 3 is filled with hydraulic oil, which buffers the impact force when the moving mold 2 contacts the fixed mold 1.

[0022] The buffer plate 5 is located on the left side of the buffer cylinder 3 and has a buffer groove 6. Several buffer rods 7 are fixed at equal intervals on the right side of the buffer plate 5. The buffer rods 7 are movably inserted into the buffer cylinder 3 and are in contact with the limiting ring 4. Buffer holes 8 are opened in the buffer rods 7. The buffer groove 6 and the buffer hole 8 are connected. Hydraulic oil flows through the buffer hole 8 in the buffer cylinder 3 and the buffer groove 6, so that the pressure is evenly distributed in the several buffer cylinders 3. The right end of each of the several buffer rods 7 has a groove 19. The sealing ring 20 is sleeved in the groove 19 and is in contact with the inner wall of the buffer cylinder 3 to improve the sealing between the buffer rods 7 and the buffer cylinder 3 and prevent oil leakage. A positioning frame 21 is fixed on the left side of the moving mold 2. The buffer plate 5 is movably inserted into the positioning frame 21 to restrict the buffer plate 5 within the positioning frame 21, thereby restricting the movement direction of the buffer plate 5.

[0023] The extrusion plate 9 is movably disposed in the buffer groove 6 and is engaged with the buffer groove 6. The support frame 10 is fixed on the left side of the buffer plate 5. The output end of the drive push rod is fixedly connected to the support frame 10. The extrusion plate 9 extrudes the hydraulic oil in the buffer groove 6, thereby maintaining a certain pressure in the buffer cylinder 3. The inner wall of the buffer groove 6 is fixed with the limit frame 18, which is engaged with the extrusion plate 9 to restrict the position of the extrusion plate 9, so that a certain space is reserved in the buffer groove 6 to facilitate the flow of hydraulic oil.

[0024] A limiting component 11 is disposed on the buffer plate 5 and engages with the compression plate 9. The limiting component 11 includes:

[0025] Two limiting plates 12 are fixed to the front and rear sides of the support frame 10 respectively. The limiting plates 12 and the horizontal plate of the support frame 10 are provided with slots 13 to increase the support area of ​​the horizontal plate of the support frame 10. The connection between the support frame 10 and the limiting plates 12 is provided with a slot 16. The support plate 17 is bolted into the slot 16 to increase the connection force between the support frame 10 and the limiting plates 12 and prevent the connection between the limiting plates 12 and the support frame 10 from breaking.

[0026] The contact frame 14 consists of several pieces, each of which is movably inserted into the slot 13. Bolts pass through the side wall threads of the support frame 10 and the limiting plate 12 and are screwed onto the contact frame 14. The contact frame 14 is installed on the support frame 10 and the limiting plate 12 by bolts. Through the contact points of the several contact frames 14, the contact force is evenly distributed on the extrusion plate 9, so as to avoid the extrusion plate 9 bending due to uneven force.

[0027] The contact pad 15 consists of several pads, each disposed on the right end of the contact frame 14. The contact pad 15 is designed to abut against the extrusion plate 9. The contact pad 15 is used to buffer the stress exerted by the extrusion plate 9 on the contact frame 14, preventing the bolts on the contact frame 14 from loosening due to stress.

[0028] When using this utility model, the moving mold 2 is pressed onto the fixed mold 1 by driving the push rod. Due to the contact frame 14 and the extrusion plate 9, an initial pre-pressure is generated in the buffer cylinder 3. When the mold is closed or the molten metal is filled between the fixed mold 1 and the moving mold 2, the stress generated is transmitted to the buffer cylinder 3, causing the buffer cylinder 3 to move on the buffer rod 7. The buffer cylinder 3 applies stress to the hydraulic oil. The initial pre-pressure in the buffer cylinder 3 buffers the stress. When the stress in the local buffer cylinder 3 is too large, the hydraulic oil flows through the buffer hole 8 in the buffer cylinder 3 and the buffer groove 6, and the excessive stress is evenly distributed in several buffer cylinders 3, thereby achieving dynamic pressure balance and avoiding local stress concentration.

[0029] In addition, the operator can unscrew the bolts on the support frame 10 to remove the support frame 10 and the contact frame 14, so that the extrusion plate 9 can be removed from the buffer groove 6 for maintenance or repair, ensuring that the buffer plate 5 has the best buffering effect on the moving mold 2.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] The hydraulic oil in the buffer tank 6 is squeezed by the extrusion plate 9, so that the initial pre-pressure is generated in the buffer cylinder 3, which is convenient for buffering the stress generated during the production process. In addition, the hydraulic oil flows through the buffer hole 8 in the buffer cylinder 3 and the buffer tank 6, so that the pressure is evenly distributed in several buffer cylinders 3, achieving dynamic uniformity of pressure.

[0032] The limiting component 11 is set up so that the contact frame 14 is installed on the support frame 10 and the limiting plate 12 by bolts, which facilitates the installation and disassembly of the support frame 10 and the contact frame 14, and at the same time facilitates the removal of the extrusion plate 9 for maintenance or repair.

[0033] A support plate 17 is provided to increase the supporting force between the support frame 10 and the limiting plate 12, thereby preventing the limiting plate 12 from bending and breaking.

[0034] A sealing ring 20 is installed to improve the sealing between the buffer rod 7 and the buffer cylinder 3, and to prevent oil leakage from the buffer cylinder 3.

[0035] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dynamic pressure equalization buffer mechanism for a die casting mold frame, comprising a fixed mold (1) and a movable mold (2); the fixed mold (1) and the movable mold (2) are arranged in abutment and cooperation, and the movable mold (2) is arranged on the left side of the fixed mold (1) by means of a driving push rod; characterized in that, It also includes: a buffer cylinder (3), wherein there are several buffer cylinders (3) and they are fixed in an array on the left side of the moving mold (2), and a limit ring (4) is fixed on the inner wall of the left opening of the buffer cylinder (3); a buffer plate (5), wherein the buffer plate (5) is located on the left side of the buffer cylinder (3), and a buffer groove (6) is provided on the buffer plate (5), and several buffer rods (7) are fixed at equal intervals on the right side of the buffer plate (5), the buffer rods (7) are movably inserted into the buffer cylinder (3), and the buffer rods (7) are engaged with the limit ring (4) to abut against each other. The buffer rod (7) has a buffer hole (8) inside, and the buffer groove (6) is connected to the buffer hole (8); the extrusion plate (9) is movably set in the buffer groove (6), and the extrusion plate (9) and the buffer groove (6) are engaged in abutment; the support frame (10) is fixed on the left side of the buffer plate (5), and the output end of the drive push rod is fixedly connected to the support frame (10); the limiting component (11) is set on the buffer plate (5), and the limiting component (11) and the extrusion plate (9) are engaged in abutment.

2. A dynamic pressure equalizing cushioning mechanism for die casting mold frames according to claim 1, characterized in that: The limiting component (11) includes: a limiting plate (12), there are two limiting plates (12), and they are respectively fixed on the front and rear sides of the support frame (10). The limiting plate (12) and the horizontal plate of the support frame (10) are provided with slots (13); a contact frame (14), there are several contact frames (14), and they are respectively movably inserted into the slots (13). Bolts pass through the side wall threads of the support frame (10) and the limiting plate (12) and are screwed onto the contact frame (14); a contact pad (15), there are several contact pads (15), and they are respectively set at the right end of the contact frame (14). The contact pad (15) and the pressing plate (9) are in contact.

3. The dynamic pressure equalization buffer mechanism for die-casting mold frame according to claim 2, characterized in that: A slot (16) is provided at the connection between the support frame (10) and the limiting plate (12), and the support plate (17) is set in the slot (16) by bolts.

4. The dynamic pressure equalizing cushion mechanism for die casting mold frames according to claim 1, characterized by: A limiting frame (18) is fixed on the inner wall of the buffer groove (6), and the limiting frame (18) is set to abut against the extrusion plate (9).

5. A dynamic pressure equalizing cushioning mechanism for die casting mold frames according to claim 1, characterized in that: Several buffer rods (7) have grooves (19) on their right ends. A sealing ring (20) is fitted inside the groove (19). The sealing ring (20) is fitted into the inner wall of the buffer cylinder (3) to abut against each other.

6. A dynamic pressure equalizing cushioning mechanism for die casting frames as defined in claim 1, characterized in that: The moving mold (2) has a positioning frame (21) fixed on the left side, and the buffer plate (5) is movably inserted into the positioning frame (21).

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