Universal mold capable of rapidly replacing mold core

Abstract

The utility model discloses a universal die capable of rapidly replacing die cores, and belongs to the technical field of die-casting dies, and the universal die is characterized by comprising an upper die frame and a lower die frame, a die cavity is formed between the upper die frame and the lower die frame, an upper die core and a lower die core are arranged in the die cavity, and the upper die core and the lower die core are arranged in an overlapped mode; the front face and the back face of the die groove are each provided with a drawing opening, the surface of the lower die frame is provided with a drawing groove, and the lower die core can slide in the drawing groove to be drawn out of the drawing openings. And positioning grooves are formed in the two sides of the drawing opening correspondingly, positioning blocks are inserted into the positioning grooves, the positioning blocks are connected with the mold grooves through positioning assemblies, and the upper mold core and the lower mold core are fixed in the mold grooves through the positioning blocks. According to the mold, the upper mold frame does not need to be disassembled, the mold cores can be directly replaced, and the replacement efficiency of the mold cores is improved.

Description

Technical Field

[0001] The present application relates to the technical field of die casting molds, and more specifically to a universal mold for quickly replacing mold cores. Background Art

[0002] Die casting mold is a tool for casting metal parts, a tool that completes the die casting process on a special die casting die forging machine. The basic process of die casting is: 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, eliminating the shrinkage and porosity defects of the blank and making the internal structure of the blank reach the broken grains in the forged state.

[0003] At present, a Chinese patent with announcement number CN209320172U discloses a mold with a quickly replaceable mold core, which includes an upper mold frame and a lower mold frame, the upper mold frame is provided with a first mold groove, the lower mold frame is provided with a second mold groove, the first mold groove and the second mold groove are relatively arranged and cooperate to form an inner cavity, the inner cavity is provided with a core assembly, and the core assembly includes a first fixed block, a second fixed block, a third fixed block, a fourth fixed block, a fifth fixed block and a core block.

[0004] In the prior art, similar to the mold mentioned above, when replacing the mold core, it is necessary to use tools to remove the positioning pin, first remove the upper mold frame, and then remove the internal mold core for replacement. Although the mold core can be replaced, the operation is relatively cumbersome and the replacement efficiency is low, so there is room for improvement. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a universal mold for quickly replacing the mold core, which has the advantage that the mold core can be directly replaced without disassembling the upper mold frame, thereby improving the efficiency of mold core replacement.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a universal mold for quickly replacing mold cores, comprising an upper mold frame and a lower mold frame, a mold groove is arranged between the upper mold frame and the lower mold frame, an upper mold core and a lower mold core are arranged inside the mold groove, the upper mold core and the lower mold core are arranged in a superimposed manner, a draw-out opening is opened on the front and back sides of the mold groove, a draw-out groove is opened on the surface of the lower mold frame, and the lower mold core can slide in the draw-out groove and be drawn out from the draw-out opening;

[0007] Positioning grooves are provided on both sides of the drawer opening, and positioning blocks are inserted into the positioning grooves. The positioning blocks are connected to the mold grooves through positioning components, and the positioning blocks fix the upper mold core and the lower mold core in the mold grooves.

[0008] By adopting the above technical solution, during use, when the mold core needs to be replaced, loosen the positioning assembly and take out the positioning block from the positioning groove. After the positioning block is taken out, the upper mold core and the lower mold core lose their limit. At this time, the upper mold core and the lower mold core can be slid along the pull-out groove by hand, and pulled out from the pull-out port for replacement. The mold core can be directly replaced without disassembling the upper mold frame, thereby improving the replacement efficiency of the mold core.

[0009] In a preferred embodiment: the positioning assembly includes a positioning bolt, and the positioning bolt passes through the positioning block and is connected to the mold groove.

[0010] By adopting the above technical solution, the positioning bolt is loosened using a tool, and the positioning block loses connection with the mold groove. At this time, the positioning block can be removed and the mold core can be pulled out, thereby improving the convenience of replacing the mold core.

[0011] In a preferred embodiment: the positioning assembly includes a fixed tube, a moving rod is slidably connected inside the fixed tube, a fixed ring is provided at one end of the moving rod, connecting rods are hinged on both sides of the fixed ring, through openings are opened on both sides of the fixed tube, the top inner wall of the through opening is rotatably connected to a limit block, and the limit block and the connecting rod are connected by a reset spring;

[0012] The outer wall of the mold groove is provided with a limiting hole, the fixing tube is matched with the limiting hole, both sides of the limiting hole are provided with limiting grooves, and the limiting blocks are matched with the limiting grooves.

[0013] By adopting the above technical solution, when the mold core needs to be replaced, it is only necessary to press the moving rod by hand, and make the moving rod drive the fixed ring to move, and at the same time use the connecting rod to drive the limit block to rotate toward the inside of the fixed tube. When the limit block completely enters the inside of the fixed tube, the limit block and the limit groove lose their limit. At this time, the fixed tube can be pulled out from the limit hole, and the mold core can be pulled out after the positioning block is removed.

[0014] In a preferred embodiment: a pressing plate is provided at one end of the moving rod away from the fixing ring, and the cross section of the pressing plate is a circular structure.

[0015] By adopting the above technical solution and setting the push plate, the contact area between the finger and the moving rod can be increased, making the operation more convenient.

[0016] In a preferred embodiment: a guide sleeve is provided on the inner wall of the fixed tube, and the moving rod slides along the inside of the guide sleeve.

[0017] By adopting the above technical solution and setting of the guide sleeve, the movement of the moving rod can be guided to avoid deviation of the moving rod.

[0018] In a preferred embodiment: the inner wall of the fixed tube is provided with a stop block, and when the limit block enters into the fixed tube, the fixed ring contacts the stop block.

[0019] By adopting the above technical solution, the moving rod is pressed, and when the fixing ring contacts the abutting block, the limiting block completely enters the fixing tube, so that the user can make an accurate judgment on the timing of removing the fixing tube.

[0020] In a preferred embodiment: the upper mold core and the lower mold core are connected via a pulling handle, and the pulling handle is located outside the mold cavity.

[0021] By adopting the above technical solution and setting the pulling handle, the hand force application area is increased, which makes it convenient to pull out the upper mold core and the lower mold core together, thereby improving the convenience of operation.

[0022] Compared with the prior art, this application has the following beneficial effects:

[0023] When the mold core needs to be replaced, just loosen the positioning assembly and take out the positioning block from the positioning groove, so that the upper mold core and the lower mold core lose their limit. At this time, slide the upper mold core and the lower mold core along the pull-out groove and pull them out from the pull-out port for replacement. There is no need to disassemble the upper mold frame, which improves the efficiency of mold core replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the three-dimensional structure of the first embodiment;

[0025] Figure 2 This is a schematic diagram showing the structure of the upper mold core and the lower mold core in the second embodiment;

[0026] Figure 3 is a schematic cross-sectional structure diagram of the second embodiment highlighting the fixed tube;

[0027] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0028] Explanation of the accompanying drawings: 1. Upper mold frame; 2. Lower mold frame; 3. Mold groove; 4. Upper mold core; 5. Lower mold core; 6. Pull-out opening; 7. Pull-out groove; 8. Positioning groove; 9. Positioning block; 10. Positioning bolt; 11. Fixed tube; 12. Moving rod; 13. Fixed ring; 14. Connecting rod; 15. Limit block; 16. Return spring; 17. Limit hole; 18. Push plate; 19. Guide sleeve; 20. Support block; 21. Pull handle. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure.

[0030] In the description of the present disclosure, it should be understood that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the disclosed product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0031] Embodiment 1: A universal mold for quickly changing mold cores, such as Figure 1 As shown, it includes an upper mold frame 1 and a lower mold frame 2, a mold groove 3 is arranged between the upper mold frame 1 and the lower mold frame 2, an upper mold core 4 and a lower mold core 5 are arranged inside the mold groove 3, the upper mold core 4 and the lower mold core 5 are arranged in a superimposed manner, a pull-out opening 6 is opened on the front and back sides of the mold groove 3, a pull-out groove 7 is opened on the surface of the lower mold frame 2, and positioning grooves 8 are opened on both sides of the pull-out opening 6, a positioning block 9 is inserted into the positioning groove 8, the positioning block 9 is connected to the mold groove 3 through a positioning assembly, and the positioning block 9 fixes the upper mold core 4 and the lower mold core 5 in the mold groove 3.

[0032] In one specific embodiment, the positioning assembly includes a positioning bolt 10, which passes through the positioning block 9 and is connected to the mold groove 3. The positioning bolt 10 is loosened using a tool, and the positioning block 9 loses connection with the mold groove 3. At this time, the positioning block 9 can be removed and the mold core can be pulled out, thereby improving the convenience of replacing the mold core.

[0033] It should be noted that the upper mold core 4 and the lower mold core 5 are connected by a pulling handle 21, and the pulling handle 21 is located outside the mold groove 3; by holding the pulling handle 21, the hand force application area can be increased, which makes it convenient to pull out the upper mold core 4 and the lower mold core 5 together, thereby improving the convenience of operation.

[0034] Embodiment 2, as Figure 3-4 As shown, the difference between it and the first embodiment is that the positioning assembly includes a fixed tube 11, the interior of the fixed tube 11 is slidably connected with a moving rod 12, one end of the moving rod 12 is provided with a fixed ring 13, both sides of the fixed ring 13 are hinged with connecting rods 14, both sides of the fixed tube 11 are provided with through openings, the top inner wall of the through opening is rotatably connected to a limiting block 15, and the limiting block 15 and the connecting rod 14 are connected by a reset spring 16; the outer wall of the mold groove 3 is provided with a limiting hole 17, the fixed tube 11 is adapted to the limiting hole 17, both sides of the limiting hole 17 are provided with limiting grooves, and the limiting block 15 is adapted to the limiting grooves.

[0035] When replacing the mold core, it is only necessary to press the moving rod 12 by hand so that the moving rod 12 drives the fixing ring 13 to move, and at the same time use the connecting rod 14 to drive the limiting block 15 to rotate toward the inside of the fixing tube 11. When the limiting block 15 completely enters the inside of the fixing tube 11, the limiting block 15 and the limiting groove lose their limiting position. At this time, the fixing tube 11 can be pulled out from the limiting hole 17, and the mold core can be pulled out after the positioning block 15 is removed.

[0036] It is worth mentioning that a pressing plate 18 is fixed to one end of the moving rod 12 away from the fixing ring 13. The cross-section of the pressing plate 18 is a circular structure. The pressing plate 18 can increase the contact area between the finger and the moving rod 12, making the operation more convenient.

[0037] Based on the above embodiment, a guide sleeve 19 is installed on the inner wall of the fixed tube 11, and the moving rod 12 slides inside the guide sleeve 19. The guide sleeve 19 can guide the movement of the moving rod 12 to avoid deviation in the movement of the moving rod 12, thereby improving stability during operation.

[0038] On the basis of the above embodiment, a stop block 20 is installed on the inner wall of the fixed tube 11. When the limit block 15 enters into the fixed tube 11, the fixed ring 13 contacts the stop block 20, which means that the limit block 15 is completely entered into the fixed tube 11. This makes it convenient for the user to make an accurate judgment on the timing of removing the fixed tube 11.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A universal mold for quickly changing mold cores, comprising an upper mold frame (1) and a lower mold frame (2), a mold groove (3) is arranged between the upper mold frame (1) and the lower mold frame (2), an upper mold core (4) and a lower mold core (5) are arranged inside the mold groove (3), and the upper mold core (4) and the lower mold core (5) are arranged in a superimposed manner, characterized in that: The front and back sides of the mold groove (3) are both provided with a draw-out opening (6), the surface of the lower mold frame (2) is provided with a draw-out groove (7), and the lower mold core (5) can slide in the draw-out groove (7) and be drawn out from the draw-out opening (6); Positioning grooves (8) are provided on both sides of the draw-out opening (6), and positioning blocks (9) are inserted into the interior of the positioning grooves (8). The positioning blocks (9) are connected to the mold groove (3) through a positioning assembly, and the positioning blocks (9) fix the upper mold core (4) and the lower mold core (5) in the mold groove (3).

2. A universal mold for quickly changing mold cores according to claim 1, characterized in that: The positioning assembly comprises a positioning bolt (10), and the positioning bolt (10) passes through the positioning block (9) and is connected to the mold groove (3).

3. A universal mold for quickly changing mold cores according to claim 1, characterized in that: The positioning assembly comprises a fixed tube (11), the interior of the fixed tube (11) is slidably connected to a moving rod (12), one end of the moving rod (12) is provided with a fixed ring (13), both sides of the fixed ring (13) are hinged with connecting rods (14), both sides of the fixed tube (11) are provided with through openings, the top inner wall of the through opening is rotatably connected to a limiting block (15), and the limiting block (15) and the connecting rod (14) are connected by a reset spring (16); the outer wall of the mold groove (3) is provided with a limiting hole (17), the fixed tube (11) is matched with the limiting hole (17), both sides of the limiting hole (17) are provided with limiting grooves, and the limiting block (15) is matched with the limiting grooves.

4. A universal mold for quickly changing mold cores according to claim 3, characterized in that: A pressing plate (18) is provided at one end of the moving rod (12) away from the fixing ring (13), and the cross section of the pressing plate (18) is a circular structure.

5. A universal mold for quickly changing mold cores according to claim 4, characterized in that: The inner wall of the fixed tube (11) is provided with a guide sleeve (19), and the moving rod (12) slides along the inside of the guide sleeve (19).

6. A universal mold for quickly changing mold cores according to claim 5, characterized in that: The inner wall of the fixed tube (11) is provided with a resisting block (20), and when the limiting block (15) enters into the fixed tube (11), the fixed ring (13) contacts the resisting block (20).

7. A universal mold for quickly changing mold cores according to any one of claims 1 to 6, characterized in that: The upper mold core (4) and the lower mold core (5) are connected via a pulling handle (21), and the pulling handle (21) is located outside the mold cavity (3).

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