Sprue snapping mechanism of three-plate mold

Abstract

The utility model belongs to the technical field of die-casting dies, and particularly relates to a three-plate die sprue snapping mechanism which comprises a fixed die frame, a fixed die movable plate is arranged at the bottom of the fixed die frame in an attached mode, a movable die frame is arranged at the bottom of the fixed die movable plate in an attached mode, and first grooves are formed in the left side and the right side of the fixed die frame. According to the three-plate mold pouring gate snapping mechanism, through cooperation of a drag hook limiting block, a fixed drag hook, a cylinder, a U-shaped plate, a connecting block, a spring fixing plate, a first strip-shaped hole, a fixing bolt, a threaded groove and a reset spring, when a mold is opened, a fixed mold movable plate can move along with a movable mold frame, and the fixed mold movable plate can move along with the movement of the movable mold frame; according to the three-plate mold pouring gate snapping mechanism, a traditional hydraulic system is omitted through pure mechanical linkage design, the structure is remarkably simplified, the manufacturing cost is reduced, dependence on signals of a die casting machine is not needed, and the production takt is effectively shortened.

Description

Technical Field

[0001] This utility model belongs to the field of die casting mold technology, specifically relating to a three-plate mold gate breakage mechanism. Background Technology

[0002] Three-plate molds are used for forming complex parts. They are mainly composed of a moving mold frame, a fixed mold frame, and a fixed mold movable plate. Currently, in order to cut off the material outlet between the fixed mold frame and the fixed mold movable plate, a hydraulic cutting mechanism is usually added to the material outlet of the three-plate mold. The material outlet is cut off by the hydraulic cutting mechanism. However, since the die-casting machine needs to provide specific action signals, the production cycle time is lengthened. Furthermore, the hydraulic cutting mechanism is relatively complex, which increases the mold manufacturing cost. Utility Model Content

[0003] The purpose of this invention is to provide a gate breakage mechanism for a three-plate mold, which solves the problem that currently, in order to cut off the sprue between the fixed module and the movable plate of the fixed mold, most methods involve adding a hydraulic cutting mechanism at the sprue of the three-plate mold. However, this requires a specific action signal from the die-casting machine, which leads to an increased production cycle. Furthermore, the hydraulic cutting mechanism is relatively complex, which increases the mold manufacturing cost.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] A three-plate mold gate breakage mechanism includes a fixed mold frame, a fixed mold movable plate attached to the bottom of the fixed mold frame, a movable mold frame attached to the bottom of the fixed mold movable plate, first grooves on both the left and right sides of the fixed mold frame, and second grooves on both the left and right sides of the fixed mold movable plate. A pull hook limiting block is fixedly connected to the inner wall of the second groove. Fixed pull hooks are attached to the upper surface of the pull hook limiting block and the inner wall of the first groove. A bearing is fixedly connected to the inner wall of the fixed pull hook, and a cylinder is fixedly connected to the inner ring of the bearing. U-shaped plates are fixedly connected to both the front and rear sides of the device. Connecting blocks are fixedly connected to the bottom of the U-shaped plates and the left and right sides of the moving mold frame. Spring fixing plates are fixedly connected to the sides of the connecting blocks. A first strip-shaped hole is opened inside the spring fixing plate. Fixing bolts are fitted to the inner wall of the first strip-shaped hole and the side of the spring fixing plate. A threaded groove is opened on the side of the fixing hook. The inner wall of the threaded groove is fitted to the surface of the fixing bolt. A return spring is sleeved on the surface of the fixing bolt. The return spring is located between the spring fixing plate and the fixing hook.

[0006] The present invention is further configured such that the fixing hook is L-shaped and the upper surface of the fixing hook is an inclined surface.

[0007] The present invention is further configured such that a release strip is fixedly connected to both the left and right sides of the fixed mold frame, a circular hole is opened inside the fixed pull hook, a release trigger rod is fixedly connected to the inner wall of the circular hole, a positioning plate is fixedly connected to both the left and right sides of the fixed mold frame, a second strip-shaped hole is opened inside the positioning plate, and a positioning block is fixedly connected to both the left and right sides of the fixed mold movable plate, the surface of the positioning block is in contact with the inner wall of the second strip-shaped hole.

[0008] The present invention is further configured such that the unhooking strip includes a rectangular plate and a trapezoidal block, the left and right sides of the fixed mold frame are fixedly connected to one side of the rectangular plate, and the other side of the rectangular plate is fixedly connected to the side of the trapezoidal block.

[0009] The present invention is further configured such that the trapezoidal block is located below the unhooking trigger rod, and both the upper and lower sides of the trapezoidal block are inclined surfaces.

[0010] The present invention is further configured such that the height of the positioning block is less than the height of the second strip hole.

[0011] The technical effects achieved by this utility model are as follows:

[0012] This utility model discloses a three-plate mold gate breakage mechanism. Through the cooperation of a pull hook limiting block, a fixed pull hook, a cylinder, a U-shaped plate, a connecting block, a spring fixing plate, a first strip hole, a fixing bolt, a threaded groove, and a return spring, the fixed mold movable plate moves together with the moving mold frame when the mold is opened. As the moving mold frame moves, it forcibly breaks the gate between the fixed mold frame and the fixed mold movable plate. Thus, this three-plate mold gate breakage mechanism eliminates the need for a traditional hydraulic system through a purely mechanical linkage design, significantly simplifying the structure and reducing manufacturing costs. Furthermore, it does not rely on die-casting machine signals, effectively shortening the production cycle.

[0013] This utility model discloses a three-plate mold gate breakage mechanism. Through the cooperation of the release bar and the release trigger rod, the fixed pull hook can automatically separate from the pull hook limit block after the mold is opened to a certain extent. Through the cooperation of the positioning plate, the second strip hole and the positioning block, the moving mold frame can automatically separate from the fixed mold moving plate after the mold is opened to a certain extent. Thus, it is ensured that the fixed mold frame, the fixed mold moving plate and the moving mold frame can all automatically separate when the mold is opened. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a side view of the structure of this utility model;

[0016] Figure 3 yes Figure 2 Sectional view at point AA;

[0017] Figure 4 yes Figure 3 Enlarged view at point B in the middle;

[0018] Figure 5 This is a side view of the fixed mold frame in this utility model;

[0019] Figure 6 This is a side view of the fixed mold movable plate in this utility model;

[0020] Figure 7 This is a side view of the moving mold frame in this utility model;

[0021] Figure 8 This is a front view of the fixing hook in this utility model;

[0022] Figure 9 This is a side view of the fixed hook in this utility model;

[0023] Figure 10 This is a side view of the spring fixing plate in this utility model;

[0024] Figure 11 This is a front view of the release bar in this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Fixed mold frame; 2. Fixed mold movable plate; 3. Moving mold frame; 4. First groove; 5. Second groove; 6. Hook limiting block; 7. Fixed hook; 8. Bearing; 9. Cylinder; 10. U-shaped plate; 11. Connecting block; 12. Spring fixing plate; 13. First strip hole; 14. Fixing bolt; 15. Threaded groove; 16. Return spring; 17. Release bar; 171. Rectangular plate; 172. Trapezoidal block; 18. Round hole; 19. Release trigger rod; 20. Positioning plate; 21. Second strip hole; 22. Positioning block. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] like Figures 1 to 10As shown, a three-plate mold gate breakage mechanism includes a fixed mold frame 1, a fixed mold movable plate 2 attached to the bottom of the fixed mold frame 1, a movable mold frame 3 attached to the bottom of the fixed mold movable plate 2, first grooves 4 on both the left and right sides of the fixed mold frame 1, and second grooves 5 on both the left and right sides of the fixed mold movable plate 2. A pull hook limiting block 6 is fixedly connected to the inner wall of the second groove 5. A fixed pull hook 7 is attached to the upper surface of the pull hook limiting block 6 and the inner wall of the first groove 4. A bearing 8 is fixedly connected to the inner wall of the fixed pull hook 7. A cylinder 9 is fixedly connected to the inner ring of the bearing 8. U-shaped plates 10 are fixedly connected to the front and rear sides of the cylinder 9. Connecting blocks 11 are fixedly connected to the bottom of 10 and the left and right sides of the moving mold frame 3. A spring fixing plate 12 is fixedly connected to the side of the connecting block 11. A first strip hole 13 is opened inside the spring fixing plate 12. Fixing bolts 14 are fitted to the inner wall of the first strip hole 13 and the side of the spring fixing plate 12. A threaded groove 15 is opened on the side of the fixing hook 7. The inner wall of the threaded groove 15 is fitted to the surface of the fixing bolt 14. A return spring 16 is sleeved on the surface of the fixing bolt 14. The return spring 16 is located between the spring fixing plate 12 and the fixing hook 7. The fixing hook 7 is L-shaped and the upper surface of the fixing hook 7 is inclined.

[0030] It should be noted that the fixed hook 7 can rotate around the cylinder 9 by means of the bearing 8. Furthermore, by setting the upper surface of the fixed hook 7 with a slope, the required depth of the first groove 4 can be effectively reduced. The return spring 16 can be fixed on the fixed hook 7 by means of the cooperation of the fixing bolt 14 and the threaded groove 15. The height of the first strip hole 13 is greater than the diameter of the fixing bolt 14. When the moving mold frame 3 and the fixed mold movable plate 2 are together, the fixed hook 7 can be automatically inserted into the first groove 4 and contact the hook limiting block 6 by the elastic force of the return spring 16. At this time, by means of the cooperation of the fixed hook 7 and the hook limiting block 6, the fixed mold movable plate 2 will move together with the moving mold frame 3 when the mold is opened. With the movement of the moving mold frame 3, the material outlet between the fixed mold frame 1 and the fixed mold movable plate 2 will be forcibly pulled off.

[0031] like Figures 1 to 11 As shown, hook strips 17 are fixedly connected to both the left and right sides of the fixed mold frame 1. A circular hole 18 is opened inside the fixed hook 7. A hook trigger rod 19 is fixedly connected to the inner wall of the circular hole 18. A positioning plate 20 is fixedly connected to both the left and right sides of the fixed mold frame 1. A second strip hole 21 is opened inside the positioning plate 20. A positioning block 22 is fixedly connected to both the left and right sides of the fixed mold movable plate 2. The surface of the positioning block 22 fits against the inner wall of the second strip hole 21. The height of the positioning block 22 is less than the height of the second strip hole 21.

[0032] The release bar 17 includes a rectangular plate 171 and a trapezoidal block 172. The left and right sides of the fixed mold frame 1 are fixedly connected to one side of the rectangular plate 171, and the other side of the rectangular plate 171 is fixedly connected to the side of the trapezoidal block 172. The trapezoidal block 172 is located below the release trigger rod 19, and both the upper and lower sides of the trapezoidal block 172 are inclined surfaces.

[0033] It should be noted that after the mold is opened to a certain extent, the release trigger rod 19 will contact the trapezoidal block 172 on the release strip 17. Through the cooperation of the release trigger rod 19 and the trapezoidal block 172, the fixed pull hook 7 can automatically separate from the pull hook limit block 6. At the same time, after the fixed pull hook 7 separates from the pull hook limit block 6, through the cooperation of the positioning plate 20, the second strip hole 21 and the positioning block 22, the gap between the fixed mold movable plate 2 and the fixed mold frame 1 cannot be further increased. Thus, after the mold is opened to a certain extent, the moving mold frame 3 can automatically separate from the fixed mold movable plate 2, thereby ensuring that the fixed mold frame 1, the fixed mold movable plate 2 and the moving mold frame 3 can all automatically separate when the mold is opened.

[0034] The working principle of this utility model is as follows: when the fixed module, the fixed mold movable plate 2 and the moving mold frame 3 are put together, the spring force of the reset spring 16 can make the fixed hook 7 automatically insert into the first groove 4 and contact the hook limiting block 6. At this time, the fixed mold movable plate 2 and the moving mold frame 3 are fixed together by the cooperation of the fixed hook 7 and the hook limiting block 6.

[0035] When the mold opens, since the fixed mold movable plate 2 and the moving mold frame 3 are fixed together, the fixed mold movable plate 2 will move along with the moving mold frame 3. As the moving mold frame 3 moves, it forcibly pulls the material outlet between the fixed mold frame 1 and the fixed mold movable plate 2. When the mold opens to a certain extent, the hook release trigger rod 19 will contact the trapezoidal block 172 on the hook release bar 17. Through the cooperation of the hook release trigger rod 19 and the trapezoidal block 172, the fixed hook 7 can automatically separate from the hook limit block 6. At the same time, after the fixed hook 7 separates from the hook limit block 6, through the cooperation of the positioning plate 20, the second strip hole 21 and the positioning block 22, the space between the fixed mold movable plate 2 and the fixed mold frame 1 cannot continue to increase. Thus, after the mold opens to a certain extent, the moving mold frame 3 can automatically separate from the fixed mold movable plate 2.

[0036] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A gate breakage mechanism for a three-plate mold, characterized in that: The system includes a fixed mold frame (1), a fixed mold movable plate (2) attached to the bottom of the fixed mold frame (1), a movable mold frame (3) attached to the bottom of the fixed mold movable plate (2), a first groove (4) on both the left and right sides of the fixed mold frame (1), a second groove (5) on both the left and right sides of the fixed mold movable plate (2), a hook limiting block (6) fixedly connected to the inner wall of the second groove (5), a fixed hook (7) attached to the upper surface of the hook limiting block (6) and the inner wall of the first groove (4), a bearing (8) fixedly connected to the inner wall of the fixed hook (7), a cylinder (9) fixedly connected to the inner ring of the bearing (8), and U-shaped plates (1) fixedly connected to the front and rear sides of the cylinder (9). 0), the bottom of the U-shaped plate (10) and the left and right sides of the moving mold frame (3) are fixedly connected to the connecting block (11), the side of the connecting block (11) is fixedly connected to the spring fixing plate (12), the inside of the spring fixing plate (12) is provided with a first strip hole (13), the inner wall of the first strip hole (13) and the side of the spring fixing plate (12) are both fitted with fixing bolts (14), the side of the fixing hook (7) is provided with a threaded groove (15), the inner wall of the threaded groove (15) is fitted with the surface of the fixing bolt (14), the surface of the fixing bolt (14) is fitted with a reset spring (16), the reset spring (16) is located between the spring fixing plate (12) and the fixing hook (7).

2. The three-plate mold gate breakage mechanism according to claim 1, characterized in that: The fixed hook (7) is L-shaped, and the upper surface of the fixed hook (7) is a slope.

3. The three-plate mold gate breakage mechanism according to claim 1, characterized in that: The fixed mold frame (1) is fixedly connected to the left and right sides with a release strip (17). The fixed pull hook (7) has a round hole (18) inside. The inner wall of the round hole (18) is fixedly connected with a release trigger rod (19). The fixed mold frame (1) is fixedly connected to the left and right sides with a positioning plate (20). The positioning plate (20) has a second strip hole (21) inside. The fixed mold movable plate (2) is fixedly connected to the left and right sides with a positioning block (22). The surface of the positioning block (22) is in contact with the inner wall of the second strip hole (21).

4. The three-plate mold gate breakage mechanism according to claim 3, characterized in that: The unhooking strip (17) includes a rectangular plate (171) and a trapezoidal block (172). The left and right sides of the fixed mold frame (1) are fixedly connected to one side of the rectangular plate (171), and the other side of the rectangular plate (171) is fixedly connected to the side of the trapezoidal block (172).

5. The gate breakage mechanism for a three-plate mold according to claim 4, characterized in that: The trapezoidal block (172) is located below the unhooking trigger rod (19), and both the upper and lower sides of the trapezoidal block (172) are inclined surfaces.

6. The three-plate mold gate breakage mechanism according to claim 3, characterized in that: The height of the positioning block (22) is less than the height of the second strip hole (21).

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