Die-casting die with ejector rod convenient to replace

Abstract

The utility model belongs to the technical field of die-casting dies, and particularly relates to a die-casting die convenient to replace an ejector rod.The die-casting die convenient to replace the ejector rod.The die-casting die convenient to replace the ejector rod.The die-casting die comprises an upper die frame, an upper die core is fixedly connected to the inner wall of the upper die frame, a lower die frame is arranged at the bottom of the upper die frame in an attached mode, and a lower die core is fixedly connected to the inner wall of the lower die frame; ejection holes are formed in the lower mold core and the lower mold frame correspondingly, and columnar ejection rods are arranged on the inner walls of the ejection holes. According to the die-casting die with the ejector rod convenient to replace, through cooperation of a transverse plate, a first round hole, a locking support, a supporting block, a second U-shaped plate, a strip-shaped plate, a second round hole and a magnetic ring, a user can disassemble and assemble the columnar ejector rod by moving a connecting plate on the locking support, then the user can replace the columnar ejector rod more conveniently, meanwhile, the user can conveniently replace the columnar ejector rod, and the die-casting die is convenient to use. And after the strip-shaped plate is separated from the second U-shaped plate, the columnar ejector rod cannot fall off through the attraction force of the magnetic ring to the strip-shaped plate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the die casting die technical field, concretely relates to a kind of die casting die of easy replacement ejector rod. BACKGROUND

[0002] Die casting die is a tool for casting metal parts, a tool for completing die casting process on a dedicated die casting forging machine. Currently, when using die casting die to make metal parts, the formed metal parts are mostly ejected from the mold core by the ejector rod in the die casting die, for example, the die casting die disclosed in Chinese patent publication No. CN219310042U makes it easy to take parts, but the ejector rod on the die casting die is mostly fixed by bolts, and the position of the bolts is relatively narrow, which makes it more troublesome for maintenance personnel to disassemble and assemble the ejector rod. SUMMARY

[0003] The utility model aims to provide a kind of die casting die of easy replacement ejector rod, solve the problem that the ejector rod on the die casting die is mostly fixed by bolts, and the position of the bolts is relatively narrow, which makes it more troublesome for maintenance personnel to disassemble and assemble the ejector rod.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A kind of die casting die of easy replacement ejector rod, comprising an upper die holder, the inner wall of the upper die holder is fixedly connected with an upper die core, the bottom of the upper die holder is attached with a lower die holder, the inner wall of the lower die holder is fixedly connected with a lower die core, the inside of the lower die core and the inside of the lower die holder are both provided with an ejection hole, the inner wall of the ejection hole is provided with a cylindrical ejector rod, the bottom of the lower die holder is fixedly connected with a stand, the bottom of the stand is fixedly connected with a bottom plate, the upper surface of the bottom plate is fixedly connected with an electric push rod, the upper surface of the electric push rod is fixedly connected with a horizontal plate, the inside of the horizontal plate is provided with a first circular hole, the bottom of the horizontal plate is fixedly connected with a locking bracket, the surface of the locking bracket is attached with the inner wall of the first circular hole, the inner wall of the locking bracket is attached with the surface of the cylindrical ejector rod, the upper surface of the horizontal plate is fixedly connected with a support block, the upper surface of the support block is fixedly connected with a second U-shaped plate, the inner wall of the second U-shaped plate is attached with a strip-shaped plate, the inside of the strip-shaped plate is provided with a second circular hole, the inner wall of the second circular hole is attached with the surface of the cylindrical ejector rod, the surface of the cylindrical ejector rod is fixedly connected with a magnetic ring, the upper surface of the magnetic ring is attached with the bottom of the strip-shaped plate.

[0006] The present invention is further configured such that the locking bracket includes a first U-shaped plate, a limiting post, a cylinder, a connecting plate, and a spring. The upper surface of the first U-shaped plate is fixedly connected to the bottom of the horizontal plate. The bottom of the inner wall of the first U-shaped plate is fixedly connected to the bottom end of the limiting post. The upper surface of the limiting post is in contact with the bottom of the columnar top rod. The surfaces of the limiting post and the columnar top rod are both in contact with the inner wall of the cylinder. The surface of the cylinder is in contact with the inner wall of the first circular hole. The surface of the cylinder is fixedly connected to the inner wall of the connecting plate. The upper and lower ends of the spring are fixedly connected to the upper surface of the connecting plate and the bottom of the horizontal plate, respectively.

[0007] The present invention is further configured such that the upper surface of the limiting post is in the same horizontal plane as the upper surface of the horizontal plate, and the diameter of the limiting post is equal to the diameter of the columnar top rod.

[0008] The present invention is further configured such that the magnetic ring exerts a stronger attraction on the strip plate than the sum of the weights of the magnetic ring and the columnar top rod.

[0009] The present invention is further configured such that a hollow block is fixedly connected to the upper surface of the connecting plate, and rectangular rings are fitted to the inner wall of the hollow block and the left and right sides of the connecting plate, and barbs are fixedly connected to the upper surface of the base plate.

[0010] The present invention is further configured such that the tension of the spring on the connecting plate is greater than the sum of the weights of the connecting plate, the cylinder, the hollow block, and the rectangular ring.

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

[0012] This utility model provides a die-casting mold for easy replacement of the ejector pin. Through the cooperation of a horizontal plate, a first circular hole, a locking bracket, a support block, a second U-shaped plate, a strip plate, a second circular hole, and a magnetic ring, the user can disassemble and assemble the columnar ejector pin by moving the connecting plate on the locking bracket, thus making it more convenient for the user to replace the columnar ejector pin. At the same time, when the strip plate is separated from the second U-shaped plate, the magnetic ring's attraction on the strip plate can prevent the columnar ejector pin from falling off.

[0013] This utility model provides a die-casting mold for easy replacement of the push rod. Through the cooperation of hollow blocks, rectangular rings, and barbs, the cylinder can directly lock the connecting plate after separating from the columnar push rod. This allows the user to insert the strip plate into the second U-shaped plate or pull the strip plate out of the second U-shaped plate without constantly pressing the connecting plate, thus making it more convenient to assemble and disassemble the columnar push rod. 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 front view of the structure of this utility model;

[0016] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 yes Figure 2 Sectional view at point BB;

[0018] Figure 5 yes Figure 4 Enlarged view at point C;

[0019] Figure 6 yes Figure 4 Enlarged view at point D;

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

[0021] Figure 8 This is a bottom view of the upper mold frame in this utility model;

[0022] Figure 9 This is a top view of the lower mold frame in this utility model;

[0023] Figure 10 This is a front view of the columnar top rod in this utility model;

[0024] Figure 11 This is a top view of the horizontal plate in this utility model;

[0025] Figure 12 This is a top view of the locking bracket in this utility model;

[0026] Figure 13 This is a top view of the strip plate in this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Upper mold base; 2. Upper mold core; 3. Lower mold base; 4. Lower mold core; 5. Ejector hole; 6. Columnar ejector rod; 7. Column; 8. Base plate; 9. Electric push rod; 10. Horizontal plate; 11. First round hole; 12. Locking bracket; 121. First U-shaped plate; 122. Limiting post; 123. Cylinder; 124. Connecting plate; 125. Spring; 13. Support block; 14. Second U-shaped plate; 15. Strip plate; 16. Second round hole; 17. Magnetic ring; 18. Hollow block; 19. Rectangular ring; 20. Barb. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] like Figures 1 to 13 As shown, a die-casting mold with easy-to-replace ejector pins includes an upper mold frame 1, an upper mold core 2 fixedly connected to the inner wall of the upper mold frame 1, a lower mold frame 3 fitted to the bottom of the upper mold frame 1, a lower mold core 4 fixedly connected to the inner wall of the lower mold frame 3, ejection holes 5 being provided inside the lower mold core 4 and the lower mold frame 3, and columnar ejector pins 6 being provided on the inner wall of the ejection holes 5, a column 7 fixedly connected to the bottom of the lower mold frame 3, a base plate 8 fixedly connected to the bottom of the column 7, an electric push rod 9 fixedly connected to the upper surface of the base plate 8, a horizontal plate 10 fixedly connected to the upper surface of the electric push rod 9, a first circular hole 11 being provided inside the horizontal plate 10, and a locking bracket fixedly connected to the bottom of the horizontal plate 10. The surface of the locking bracket 12 is in contact with the inner wall of the first circular hole 11, and the inner wall of the locking bracket 12 is in contact with the surface of the columnar top rod 6. A support block 13 is fixedly connected to the upper surface of the horizontal plate 10, and a second U-shaped plate 14 is fixedly connected to the upper surface of the support block 13. A strip plate 15 is attached to the inner wall of the second U-shaped plate 14. A second circular hole 16 is opened inside the strip plate 15. The inner wall of the second circular hole 16 is in contact with the surface of the columnar top rod 6. A magnetic ring 17 is fixedly connected to the surface of the columnar top rod 6. The upper surface of the magnetic ring 17 is in contact with the bottom of the strip plate 15. The attraction force of the magnetic ring 17 on the strip plate 15 is greater than the sum of the weight of the magnetic ring 17 and the columnar top rod 6.

[0032] The locking bracket 12 includes a first U-shaped plate 121, a limiting post 122, a cylinder 123, a connecting plate 124, and a spring 125. The upper surface of the first U-shaped plate 121 is fixedly connected to the bottom of the horizontal plate 10. The bottom of the inner wall of the first U-shaped plate 121 is fixedly connected to the bottom end of the limiting post 122. The upper surface of the limiting post 122 is in contact with the bottom of the columnar top rod 6. The upper surface of the limiting post 122 and the upper surface of the horizontal plate 10 are in the same horizontal plane. The diameter of the limiting post 122 is equal to the diameter of the columnar top rod 6. The surfaces of the limiting post 122 and the columnar top rod 6 are both in contact with the inner wall of the cylinder 123. The surface of the cylinder 123 is in contact with the inner wall of the first circular hole 11. The surface of the cylinder 123 is fixedly connected to the inner wall of the connecting plate 124. The upper and lower ends of the spring 125 are fixedly connected to the upper surface of the connecting plate 124 and the bottom of the horizontal plate 10, respectively.

[0033] It should be noted that the columnar push rod 6 is controlled to move up or down by the electric push rod 9. When the columnar push rod 6 is inserted into the second circular hole 16, the magnetic ring 17 attracts the strip plate 15, preventing the columnar push rod 6 from falling off. When the strip plate 15 is inserted into the second U-shaped plate 14, the second U-shaped plate 14 limits the strip plate 15. Through the cooperation of the magnetic ring 17 and the limiting post 122, the columnar push rod 6 moves with the horizontal plate 10. When the inner wall of the cylinder 123 contacts the columnar push rod 6, the spring 125 pulls on the connecting plate 124, preventing the cylinder 123 from separating from the columnar push rod 6. Through the cooperation of the cylinder and the columnar push rod 6, the strip plate 15 cannot move further within the second U-shaped plate 14. After the cylinder 123 separates from the columnar push rod 6, the strip plate 15 can be directly pulled out from the second U-shaped plate 14.

[0034] like Figures 1 to 6 As shown, a hollow block 18 is fixedly connected to the upper surface of the connecting plate 124. Rectangular rings 19 are fitted to the inner wall of the hollow block 18 and the left and right sides of the connecting plate 124. A barb 20 is fixedly connected to the upper surface of the base plate 8.

[0035] Among them, the tension of spring 125 on connecting plate 124 is greater than the sum of the weights of connecting plate 124, cylinder 123, hollow block 18 and rectangular ring 19.

[0036] It should be noted that when the connecting plate 124 moves downward, the rectangular ring 19 first contacts the inclined surface on the barb 20. Then, through the inclined surface on the barb 20, the rectangular ring 19 rotates automatically. After the rectangular ring 19 moves down a certain distance, through its own weight, the rectangular ring 19 can automatically lock onto the barb 20. Through the cooperation of the rectangular ring 19 and the barb 20, the connecting plate 124 can be locked. This allows the user to insert the strip plate 15 into the second U-shaped plate 14 or pull the strip plate 15 out of the second U-shaped plate 14 without constantly pressing the connecting plate 124, thus making it more convenient to assemble and disassemble the columnar top rod 6.

[0037] The working principle of this utility model is as follows: First, the upper mold frame 1 and the lower mold frame 3 are combined together. Then, the molten metal is injected into the upper mold core 2 and the lower mold core 4 through the flow channel on the upper mold frame 1. After the molten metal is formed in the upper mold core 2 and the lower mold core 4, the die-cast workpiece can be obtained. When the formed die-cast workpiece is removed from the lower mold core 4, the columnar push rod 6 is moved upward by the electric push rod 9, and the die-cast workpiece is pushed out from the lower mold core 4 by the upward columnar push rod 6. At this time, the die-cast workpiece can be removed from the lower mold core 4.

[0038] When it is necessary to replace the columnar ejector pin 6, first use the electric push rod 9 to separate the columnar ejector pin 6 from the lower mold base 3. Then, by pressing the connecting plate 124, separate the cylinder 123 from the columnar ejector pin 6. By pulling the strip plate 15 out of the second U-shaped plate 14, the columnar ejector pin 6 can be disassembled. At the same time, after the connecting plate 124 moves down a specified distance, the rectangular ring 19 can automatically fit onto the barb 20. Through the cooperation of the barb 20 and the rectangular ring 19, the connecting plate 124 cannot move up, and the top of the cylinder 123 is lower than the bottom of the limiting post 122.

[0039] When the columnar top rod 6 needs to be installed, first insert the columnar top rod 6 into the second circular hole 16, and connect the columnar top rod 6 and the strip plate 15 together through the attraction of the magnetic ring 17. Then, insert the strip plate 15 into the second U-shaped plate 14 and align the columnar top rod 6 with the limiting post 122. Then, separate the rectangular ring 19 from the barb 20 by rotating the rectangular ring 19, and make the inner wall of the cylinder 123 fit with the surface of the columnar top rod 6 through the tension of the spring 125 on the connecting plate 124. At this time, through the cooperation of the cylinder 123 and the columnar top rod 6, the strip plate 15 cannot be separated from the second U-shaped plate 14, and through the cooperation of the second U-shaped plate 14, the strip plate 15 and the magnetic ring 17, the columnar top rod 6 is fixed on the horizontal plate 10.

[0040] 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 die-casting mold that facilitates the replacement of ejector pins, characterized in that: The upper mold frame (1) is fixedly connected to the inner wall of the upper mold frame (1), and a lower mold frame (3) is attached to the bottom of the upper mold frame (1). A lower mold core (4) is fixedly connected to the inner wall of the lower mold frame (3). Ejection holes (5) are provided inside the lower mold core (4) and the lower mold frame (3). A columnar ejector rod (6) is provided on the inner wall of the ejection hole (5). A column (7) is fixedly connected to the bottom of the lower mold frame (3). A base plate (8) is fixedly connected to the bottom of the column (7). An electric push rod (9) is fixedly connected to the upper surface of the base plate (8). A horizontal plate (10) is fixedly connected to the upper surface of the electric push rod (9). A first circular hole (11) is provided inside the horizontal plate (10). A locking bracket (12) is fixedly connected to the bottom of the horizontal plate (10). The surface of the locking bracket (12) is in contact with the inner wall of the first circular hole (11). The inner wall of the locking bracket (12) is in contact with the surface of the columnar top rod (6). A support block (13) is fixedly connected to the upper surface of the horizontal plate (10). A second U-shaped plate (14) is fixedly connected to the upper surface of the support block (13). A strip plate (15) is attached to the inner wall of the second U-shaped plate (14). A second circular hole (16) is opened inside the strip plate (15). The inner wall of the second circular hole (16) is in contact with the surface of the columnar top rod (6). A magnetic ring (17) is fixedly connected to the surface of the columnar top rod (6). The upper surface of the magnetic ring (17) is in contact with the bottom of the strip plate (15).

2. The die-casting mold for easy replacement of ejector pins according to claim 1, characterized in that: The locking bracket (12) includes a first U-shaped plate (121), a limiting post (122), a cylinder (123), a connecting plate (124), and a spring (125). The upper surface of the first U-shaped plate (121) is fixedly connected to the bottom of the horizontal plate (10). The bottom of the inner wall of the first U-shaped plate (121) is fixedly connected to the bottom end of the limiting post (122). The upper surface of the limiting post (122) is in contact with the bottom of the columnar top rod (6). The surfaces of the limiting post (122) and the columnar top rod (6) are both in contact with the inner wall of the cylinder (123). The surface of the cylinder (123) is in contact with the inner wall of the first circular hole (11). The surface of the cylinder (123) is fixedly connected to the inner wall of the connecting plate (124). The upper and lower ends of the spring (125) are fixedly connected to the upper surface of the connecting plate (124) and the bottom of the horizontal plate (10), respectively.

3. A die-casting mold for easy replacement of ejector pins according to claim 2, characterized in that: The upper surface of the limiting post (122) is in the same horizontal plane as the upper surface of the horizontal plate (10), and the diameter of the limiting post (122) is equal to the diameter of the columnar top rod (6).

4. A die-casting mold for easy replacement of ejector pins according to claim 1, characterized in that: The magnetic ring (17) exerts a stronger attraction on the strip plate (15) than the sum of the weights of the magnetic ring (17) and the columnar top rod (6).

5. A die-casting mold for easy replacement of ejector pins according to claim 2, characterized in that: A hollow block (18) is fixedly connected to the upper surface of the connecting plate (124). A rectangular ring (19) is attached to the inner wall of the hollow block (18) and the left and right sides of the connecting plate (124). A barb (20) is fixedly connected to the upper surface of the bottom plate (8).

6. A die-casting mold for easy replacement of ejector pins according to claim 5, characterized in that: The tension of the spring (125) on the connecting plate (124) is greater than the sum of the weights of the connecting plate (124), the cylinder (123), the hollow block (18), and the rectangular ring (19).

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