Precise die-casting die

Abstract

The utility model relates to the technical field of die-casting dies, in particular to a precise die-casting die which comprises a workbench, the top of the workbench is fixedly connected with a supporting frame, the interior of the supporting frame is rotationally connected with a first screw rod, the outer side of the first screw rod is provided with an upper die, and the bottom of the workbench is rotationally connected with a driving rod. A small gear is fixedly connected to the outer side of the driving rod, a chain is arranged between the driving rod and the first screw rod, a driving barrel is rotationally connected to the bottom of the workbench, a large gear is fixedly connected to the outer side of the driving barrel, and a second screw rod is in threaded connection with the interior of the driving barrel. The device has the advantages that the first screw rod, the chain, the driving rod, the small gear, the large gear, the driving cylinder and the second screw rod are arranged, so that the upper mold and the ejection block can move upwards synchronously, the ejection block just ejects a part out when the upper mold moves to a proper height, the whole operation is coherent, and the cost is also reduced when the device is used.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting molds, and particularly relates to a precision die-casting mold. Background Technique

[0002] A die-casting mold is a tool for casting metal parts, a tool for completing the die-casting process on a special die-casting forging machine. By using the die-casting mold, products can be quickly manufactured in specific shapes.

[0003] A precision die-casting mold disclosed in Chinese Patent CN219746289U. In this precision die-casting mold, positioning rods are inserted into the positioning holes, so that the upper mold remains stable during movement, and the situation of position deviation between the upper mold and the lower mold can be avoided, and the precision of the mold can be improved. However, while solving the problems, this precision die-casting mold has the following defects:

[0004] 1. When taking out the die-cast parts from the inside of the lower mold, the second motor needs to be started, so that the threaded rod drives the upper mold to move upward, and then the first motor is started, and the demolding rod pushes the parts out of the inside of the lower mold. The entire operation process requires controlling two motors separately, the operation is relatively discontinuous, and at the same time, the cost of the mold is relatively high;

[0005] 2. The positioning rods are arranged on both sides of the mold, which makes it inconvenient to take the ejected parts due to the obstruction of multiple positioning rods. Summary of the Utility Model

[0006] The purpose of the utility model aims to solve at least one of the technical defects described in the background technique.

[0007] For this reason, an object of the utility model is to provide a precision die-casting mold, aiming to solve the problem that the existing precision die-casting mold needs to control two motors separately when taking out parts from the inside of the lower mold, the operation is relatively discontinuous, and at the same time, the cost of the mold is relatively high.

[0008] To achieve the above object, an embodiment of one aspect of the utility model provides a precision die-casting mold, including a workbench, a support frame is fixedly connected to the top of the workbench, a first screw rod is rotatably connected inside the support frame, an upper mold is arranged on the outside of the first screw rod, a driving rod is rotatably connected to the bottom of the workbench, a small gear is fixedly connected to the outside of the driving rod, a chain is arranged between the driving rod and the first screw rod, a driving cylinder is rotatably connected to the bottom of the workbench, a large gear is fixedly connected to the outside of the driving cylinder, the large gear meshes with the small gear, a second screw rod is threadedly connected inside the driving cylinder, and a top block is fixedly connected to the top of the second screw rod.

[0009] Preferably, in any of the above solutions, a lower mold is fixedly installed on the top of the workbench. A through hole is formed in the inner wall of the lower mold, and the through hole penetrates the workbench. The second screw rod is movably connected to the through hole. When the driving cylinder rotates, the second screw rod can move upward through the through groove. At the same time, the upward moving second screw rod can push the parts inside the lower mold through the top block.

[0010] Preferably, in any of the above solutions, a receiving groove is formed in the top of the lower mold, and the top block is movably connected to the receiving groove. The receiving groove can receive the top block. This setting enables the bottom of the inner wall of the lower mold to remain flat and also has good stability.

[0011] Preferably, in any of the above solutions, a guide plate is fixedly connected to the bottom end of the second screw rod, and a guide post is fixedly connected to the bottom of the workbench. The guide post is movably connected to the guide plate. When the second screw rod moves, it can drive the guide plate to slide on the guide post. This setting enables the second screw rod not to rotate with the rotation of the driving cylinder but to move upward normally.

[0012] Preferably, in any of the above solutions, a motor is fixedly installed at the bottom of the support frame. The bottom end of the first screw rod penetrates the support frame and is fixedly connected to the output end of the motor. The motor can drive the first screw rod to rotate. When the first screw rod rotates, the upper mold and the top block can move upward synchronously.

[0013] Compared with the prior art, the advantages and beneficial effects of the present utility model are as follows:

[0014] 1. By setting the first screw rod, chain, driving rod, small gear, large gear, driving cylinder and second screw rod, the upper mold and the top block can move upward synchronously. And when the upper mold moves to a suitable height, the top block just pushes out the parts. The whole operation is relatively coherent, and the cost of the device during use is also reduced.

[0015] 2. By arranging the support frame, first screw rod and limit post on the back of the upper mold, there is no obstruction on both sides of the two molds. This setting enables the operator to hold the ejected parts from both sides of the mold, making it more convenient to take out the parts from the inside of the lower mold.

[0016] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0017] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

[0018] Figure 1 is a schematic structural diagram according to the present utility model;

[0019] Figure 2 is a schematic structural diagram of the workbench of the present utility model viewed from below;

[0020] Figure 3 is according to the present utility model Figure 2 An enlarged schematic structural diagram at position A;

[0021] Figure 4 is a schematic structural diagram of the cross-section of the workbench of the present utility model.

[0022] Wherein: 1. Workbench, 2. Support frame, 3. First screw, 4. Upper mold, 5. Driving rod, 6. Small gear, 7. Chain, 8. Driving cylinder, 9. Large gear, 10. Second screw, 11. Top block, 12. Connecting plate, 13. Limit post, 14. Lower mold, 15. Through hole, 16. Storage groove, 17. Guide plate, 18. Guide post, 19. Motor, 20. Sealing frame, 21. Sealing groove. Detailed implementation manners

[0023] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0024] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] Such as Figures 1-4As shown in the figure, a precision die-casting mold of this embodiment includes a workbench 1. A support frame 2 is fixedly connected to the top of the workbench 1. A first screw rod 3 is rotatably connected inside the support frame 2. The top and bottom ends of the first screw rod 3 are connected to the inner wall of the support frame 2 through bearings. An upper mold 4 is arranged outside the first screw rod 3. When the first screw rod 3 rotates, it can drive the upper mold 4 to move upward. A driving rod 5 is rotatably connected to the bottom of the workbench 1. The driving rod 5 is connected to the workbench 1 through a bearing. A small gear 6 is fixedly connected to the outside of the driving rod 5. A chain 7 is arranged between the driving rod 5 and the first screw rod 3. Sprockets are arranged on the outside of both the first screw rod 3 and the driving rod 5. The chain 7 meshes with the two sprockets, so that when the first screw rod 3 rotates, it can drive the driving rod 5 to rotate through the sprockets and the chain 7. A driving cylinder 8 is rotatably connected to the bottom of the workbench 1. The driving cylinder 8 is connected to the workbench 1 through a bearing. A large gear 9 is fixedly connected to the outside of the driving cylinder 8. The large gear 9 meshes with the small gear 6. When the driving rod 5 drives the lower gear 6 to rotate, the lower gear 6 drives the driving cylinder 8 to rotate through the large gear 9. A second screw rod 10 is threadedly connected inside the driving cylinder 8. The top of the second screw rod 10 is fixedly connected with a top block 11. The driving cylinder 8 can drive the second screw rod 10 upward, and the second screw rod 10 drives the top block 11 to move upward.

[0026] Embodiment 1: A connecting plate 12 is fixedly installed on the back of the upper mold 4. The connecting plate 12 is threadedly connected to the first screw rod 3. The connecting plate 12 is connected to the connecting plate 12 through a fixing bolt. When the first screw rod 3 rotates, it can drive the connecting plate 12 to move upward, and the connecting plate 12 drives the upper mold 4 to move upward.

[0027] Embodiment 2: There are multiple support frames 2. A limiting column 13 is fixedly connected inside other support frames 2. There are three support frames 2 on the workbench 1. The first screw rod 3 is arranged inside the middle support frame 2, and only the middle support frame 2 penetrates the workbench 1. The limiting column 13 is movably connected to the connecting plate 12, and the connecting plate 12 can slide on the outside of the limiting column 13.

[0028] Embodiment 3: A lower mold 14 is fixedly installed on the top of the workbench 1. The lower mold is installed on the top of the workbench 1 through a fixing bolt. A through hole 15 is opened on the inner wall of the lower mold 14. The through hole 15 penetrates the workbench 1. The second screw rod 10 is movably connected to the through hole 15. The second screw rod 10 can move upward through the through hole 15. At the same time, the second screw rod 10 pushes the parts inside the lower mold 14 through the top block 11.

[0029] Embodiment 4: A receiving groove 16 is opened on the top of the lower mold 14. The top block 11 is movably connected to the receiving groove 16. When die-casting parts, the receiving groove 16 can receive the top block 11.

[0030] Example 5: A guide plate 17 is fixedly connected to the bottom end of the second screw rod 10, and a guide post 18 is fixedly connected to the bottom of the workbench 1. The guide post 18 is movably connected to the guide plate 17. When the second screw rod 10 moves upward, it can drive the guide plate 17 to slide outside the guide post 18.

[0031] Example 6: A motor 19 is fixedly installed at the bottom of the support frame 2. The bottom end of the first screw rod 3 penetrates through the support frame 2 and is fixedly connected to the output end of the motor 19. When rotating the first screw rod 3, the motor 19 is directly started, and the motor 19 drives the first screw rod 3 to rotate inside the support frame 2.

[0032] Example 7: A sealing frame 20 is fixedly connected to the bottom of the upper die 4, and a sealing groove 21 is formed at the top of the lower die 14. After the upper die 4 contacts the lower die 14, the sealing frame 20 can directly move into the sealing groove 21. This setting ensures the sealing performance after the upper die 4 contacts the lower die 14.

[0033] The working principle of the present utility model is as follows: When in use, after the die casting of the part is completed, the motor 19 is directly started, and the motor drives the first screw rod 3 to rotate. The first screw rod 3 drives the upper die 4 to move upward through the connecting plate 12. At the same time, the first screw rod 3 drives the driving rod 5 to rotate through the chain 7. The driving rod 5 drives the driving cylinder 8 to rotate through the small gear 6 and the large gear 9. The driving cylinder 8 drives the second screw rod 10, so that the second screw rod 10 moves upward through the through hole 15 under the guidance of the guide plate 17 and the guide rod 18. At the same time, the second screw rod 10 pushes the part inside the lower die 14 through the top block 11. When the upper die 4 moves to an appropriate height, the top block 11 just pushes out the part inside the lower die 14, and then the operator can directly take down the pushed-out part.

[0034] Compared with the prior art, the present utility model has the following beneficial effects over the prior art:

[0035] 1. When taking out the parts die-cast inside the lower die 14, directly drive the motor 19, so that the motor 19 drives the first screw 3 to rotate. The first screw 3 drives the upper die 4 to move upward through the connecting plate 12. At the same time, the first screw 3 drives the driving rod 5 to rotate through the chain 7, so that the small gear 6 on the driving rod 5 drives the driving cylinder 8 to rotate through the large gear 9. The driving cylinder 8 drives the second screw 10 to move upward, and the top block 11 at the top of the second screw 10 pushes the parts inside the lower die 14 upward. The setting of the small gear 6 and the large gear 9 makes the upward movement speed of the upper die 4 faster than that of the top block 11. Thus, when the upper die 4 moves to an appropriate height, the top block 11 just pushes the parts out of the inside of the lower die 14. The whole process only requires one motor 19 to drive the first screw 3, so that the whole operation is relatively coherent and the cost of using the device is relatively low.

[0036] 2. The support frame 2 and the first screw 3 for driving the upper die 4 are both arranged on the back of the upper die 4, and the limit posts 13 for guiding the movement of the upper die 4 are also arranged on the back of the upper die 4. Thus, there are no any obstacles on both sides of the upper die 4 and the lower die 14. This setting enables the operator to lift the ejected parts from both sides of the die, so that it is more convenient to take the parts.

Claims

1. A precision die-casting mold, characterized in that, It includes a workbench (1), a support frame (2) is fixedly connected to the top of the workbench (1), a first screw rod (3) is rotatably connected inside the support frame (2), an upper mold (4) is arranged outside the first screw rod (3), a driving rod (5) is rotatably connected to the bottom of the workbench (1), a small gear (6) is fixedly connected to the outside of the driving rod (5), a chain (7) is arranged between the driving rod (5) and the first screw rod (3), a driving cylinder (8) is rotatably connected to the bottom of the workbench (1), a large gear (9) is fixedly connected to the outside of the driving cylinder (8), the large gear (9) meshes with the small gear (6), a second screw rod (10) is threadedly connected inside the driving cylinder (8), and a top block (11) is fixedly connected to the top of the second screw rod (10).

2. The precision die-casting mold according to claim 1, characterized in that, A connecting plate (12) is fixedly installed on the back of the upper mold (4), and the connecting plate (12) is threadedly connected to the first screw rod (3).

3. The precision die-casting mold according to claim 2, wherein There are multiple support frames (2), a limiting column (13) is fixedly connected inside the other support frames (2), and the limiting column (13) is movably connected to the connecting plate (12).

4. The precision die-casting mold according to claim 1, characterized in that, A lower mold (14) is fixedly installed on the top of the workbench (1), a through hole (15) is opened on the inner wall of the lower mold (14), the through hole (15) penetrates through the workbench (1), and the second screw rod (10) is movably connected to the through hole (15).

5. The precision die-casting mold according to claim 4, characterized in that, A storage groove (16) is opened on the top of the lower mold (14), and the top block (11) is movably connected to the storage groove (16).

6. The precision die-casting mold according to claim 1, characterized in that, A guide plate (17) is fixedly connected to the bottom end of the second screw rod (10), a guide post (18) is fixedly connected to the bottom of the workbench (1), and the guide post (18) is movably connected to the guide plate (17).

7. The precision die-casting mold according to claim 1, characterized in that, A motor (19) is fixedly installed at the bottom of the support frame (2), and the bottom end of the first screw rod (3) penetrates through the support frame (2) and is fixedly connected to the output end of the motor (19).

8. The precision die-casting mold according to claim 4, wherein A sealing frame (20) is fixedly connected to the bottom of the upper mold (4), and a sealing groove (21) is opened on the top of the lower mold (14).

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