Lifting mechanism of a balance linkage support of a die casting machine

Abstract

The utility model discloses a kind of lifting mechanism of balance linkage support of die casting machine, including base, lifting seat, lifting drive device, two groups of connecting rod balance components and two groups of guide components;Lifting drive device is installed in base and its output end connects lifting seat bottom surface;Each group of connecting rod balance components includes two two connecting rods and balance pull rod;Each two connecting rods includes the upper curved arm and lower curved arm that first end is hinged to each other by hinged axle, the second end of upper curved arm is hinged with lifting seat, the second end of lower curved arm is hinged with base;Two ends of balance pull rod are hinged in the hinged axle of corresponding two two connecting rods respectively;Each group of guide components includes two limit blocks and two guide columns;Guiding hole is set in the top surface of each limit block;The upper end of two guide columns is respectively connected with lifting seat, and the lower end is respectively matched and inserted in two guide holes.The utility model can make each position of lifting seat balancedly realize lifting, that is, the consistency of each position of lifting seat is guaranteed when lifting.

Description

Technical Field

[0001] This utility model relates to the field of die-casting machine technology, specifically to a lifting mechanism for a balanced linkage support of a die-casting machine. Background Technology

[0002] A die casting machine is an industrial casting machine that injects molten metal into a mold under pressure to cool and solidify, resulting in a solid metal casting after the mold is opened. Its working principle is based on pressure and speed control, and the specific process is as follows: First, the metal (usually lead, zinc, tin, etc.) is heated to its melting point. Then, the molten metal is injected into the mold cavity. Next, the high pressure and high speed of the die casting machine cause the molten metal to cool and solidify rapidly. Finally, the mold is opened, the finished product is removed, and further processing is performed.

[0003] Depending on the requirements of the die casting process, some products require injection feeding in the middle or lower part of the mold. The common method is to lower the die casting machine's pressing mechanism or raise the die casting machine's mold closing mechanism to adjust to the appropriate height before production. Therefore, the lifting mechanism plays a very important role in the production process of the die casting machine. Authorization announcement number CN204892901U discloses an injection device for a cold chamber die casting machine, specifically including a base, a two-speed accumulator and a booster accumulator mounted on the base, a cylinder mounted inside the base, a feeding cylinder mounted inside the cylinder, and a lifting mechanism; the output end of the feeding cylinder is connected to an injection punch, and the other end is provided with a booster piston rod extending into the cylinder; the portion of the booster piston rod extending into the cylinder is provided with a floating piston; the booster piston rod is connected to a booster piston; a booster chamber is provided between the output pipe of the booster accumulator and the booster piston; a gap is provided between the outer wall of the booster piston rod and the base, the gap being a first injection chamber; a second injection chamber is provided between the floating piston and the feeding cylinder; the first and second injection chambers are connected; the two-speed accumulator is connected to the first injection chamber; the lifting mechanism is connected to the base, and the lifting mechanism drives the base to move up and down. The lifting mechanism includes a lifting cylinder, and the piston of the lifting cylinder is fixedly connected to the base.

[0004] However, there is still room for improvement in the injection device of the aforementioned cold chamber die casting machine. For example, although it can quickly adjust the height of the injection punch through a lifting mechanism, the lifting mechanism only uses a lifting cylinder to directly drive the base for lifting. This structure is not stable enough in overall use. For instance, the different positions of the base (such as the four corners) may experience inconsistent lifting heights during the lifting process, leading to unstable and inaccurate height adjustment of the injection punch.

[0005] Therefore, improvements to existing technologies are necessary. Utility Model Content

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a lifting mechanism for a balanced linkage support of a die-casting machine. By setting two linkage balancing components with a balance tie rod and two two-linkage rods respectively, and two guide components with a guide column and a limit block respectively, the lifting drive device can ensure the consistency of each position when driving the lifting seat to lift, that is, the lifting height of each position of the lifting seat is consistent.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows:

[0008] A lifting mechanism for a balanced linkage support of a die-casting machine includes a base, a lifting seat, a lifting drive device, two sets of linkage balancing assemblies, and two sets of guide assemblies. The lifting drive device is mounted on the base, and its output end is connected to the middle of the bottom surface of the lifting seat. Each linkage balancing assembly includes two two-bar linkages and a balance rod. Each two-bar linkage includes an upper curved arm and a lower curved arm hinged together at their first ends by a hinge shaft. The second end of the upper curved arm is hinged to the lifting seat, and the second end of the lower curved arm is hinged to the base. The two ends of the balance rod are respectively hinged to the hinge shafts of the corresponding two two-bar linkages. The four two-bar linkages in the two linkage balancing assemblies are evenly distributed rectangularly between the lifting seat and the base, and the two balance rods are symmetrically arranged left and right. Each set of guide components includes two limiting blocks and two guide posts; the two limiting blocks are respectively located between the two balance rods, one limiting block is located between one end of the two balance rods, and the other limiting block is located between the other ends of the two balance rods; a downward-extending guide hole is opened on the top surface of each limiting block; the upper ends of the two guide posts are respectively connected to the lifting seat, and the lower ends are respectively matched and inserted into the two guide holes; through the arrangement of the two connecting rod balance components and the two guide components, when the lifting drive device drives the lifting seat to rise and fall, each balance rod can drive the corresponding two connecting rods to unfold or fold synchronously, and the guide holes synchronously limit the guide posts, thereby ensuring the consistency of the lifting seat in various positions during lifting and falling.

[0009] Furthermore, a first slot is provided at the first end of each upper curved arm; a second slot is provided at the first end of each lower curved arm; the first end of the lower curved arm is inserted into the first slot; one end of the balance rod is correspondingly inserted into the second slot; the hinge shaft passes through the balance rod, both sides of the first slot, and both sides of the second slot. This arrangement ensures the stability of the connection between the upper and lower curved arms and the balance rod.

[0010] Furthermore, the second end of each of the upper curved arms is hinged to the lifting seat via a pivot; the second end of each of the lower curved arms is hinged to the base via a pivot.

[0011] Furthermore, a plurality of first support blocks are provided on the top surface of the base; a plurality of second support blocks are provided on the bottom surface of the lifting seat; each first support block and each second support block can abut against each other. This arrangement ensures that the lifting seat will not exceed a preset travel distance during descent.

[0012] Furthermore, a plurality of first support blocks are evenly distributed around the base; a plurality of second support blocks are evenly distributed around the lifting seat.

[0013] Furthermore, the lifting drive device is a hydraulic cylinder.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention, through the arrangement of two connecting rod balancing components and two guide components, enables each balancing rod to drive the corresponding two connecting rods to unfold or fold synchronously when the lifting drive device drives the lifting seat to rise and fall, while the guide hole synchronously limits the guide column, thereby ensuring the consistency of each position of the lifting seat during lifting, that is, the lifting height of each position of the lifting seat is consistent.

[0016] Specifically, this invention features a balance lever that causes the two connected links to move synchronously, and the four links are evenly distributed in a rectangular shape on the bottom surface of the lifting platform. Therefore, during the lifting process, the two guide components limit the sides of the lifting platform, and the balance levers further counterbalance the links, causing them to unfold or fold simultaneously. This means the two sets of link balancing components limit the other sides of the lifting platform, ensuring balanced lifting and lowering of all positions. This guarantees excellent stability and consistency during lifting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model. Figure 2 ;

[0019] Figure 3 This is the explosive of this utility model. Figure 1 ;

[0020] Figure 4 This is the explosive of this utility model. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the connecting rod balancing assembly of this utility model.

[0022] Figure Labels

[0023] 1. Base; 11. First support block;

[0024] 2. Guide assembly; 21. Limiting block; 22. Guide post; 23. Guide hole;

[0025] 3. Lifting seat; 31. Second support block;

[0026] 4. Lifting drive device;

[0027] 5. Two-link linkage; 51. Upper crank arm; 511. First slot; 52. Lower crank arm; 521. Second slot; 53. Hinge shaft;

[0028] 6. Balance bar. Detailed Implementation

[0029] The utility model will be further described below with reference to the accompanying drawings and specific embodiments. The following description is merely exemplary and does not limit the scope of protection of the utility model.

[0030] like Figures 1-5 As shown, a lifting mechanism for a balance linkage support of a die-casting machine includes a base 1, a lifting seat 3, a lifting drive device 4, two sets of connecting rod balance components, and two sets of guide components 2.

[0031] The lifting drive device 4 is installed on the base 1 and the output end of the lifting drive device 4 is connected to the middle position of the bottom surface of the lifting seat 3.

[0032] Each linkage balance assembly includes two two-link rods 5 and a balance rod 6; each two-link rod 5 includes an upper curved arm 51 and a lower curved arm 52 that are hinged to each other at their first ends by a hinge shaft 53. The second end of the upper curved arm 51 is hinged to the lifting seat 3, and the second end of the lower curved arm 52 is hinged to the base 1; the two ends of the balance rod 6 are respectively hinged to the hinge shafts 53 of the corresponding two two-link rods 5; the four two-link rods 5 in the two linkage balance assemblies are evenly distributed in a rectangular shape between the lifting seat 3 and the base 1. In addition, the two balance rods 6 are symmetrically arranged on the left and right.

[0033] Each guide assembly 2 includes two limiting blocks 21 and two guide posts 22. The two limiting blocks 21 are located between two balance rods 6, with one limiting block 21 located between one end of the two balance rods 6 and the other limiting block 21 located between the other ends of the two balance rods 6. A downwardly extending guide hole 23 is provided on the top surface of each limiting block 21. The upper ends of the two guide posts 22 are connected to the lifting seat 3, and the lower ends are respectively inserted into the two guide holes 23. The guide posts 22 are limited by the guide holes 23 on the limiting blocks 21, thereby ensuring the stability of the lifting seat 3.

[0034] In summary, this invention, through the arrangement of two linkage balancing components and two guide components 2, enables each balancing lever 6 to simultaneously unfold or fold its corresponding two connecting rods 5 when the lifting drive device 4 drives the lifting seat 3 to rise or fall. Meanwhile, the guide holes 23 simultaneously limit the guide posts 22, thus ensuring the consistency of the lifting seat 3 at all positions during lifting, i.e., the consistent lifting height at all positions of the lifting seat 3. Specifically, since each balancing lever 6 causes the two connecting rods 5 connected to it to perform corresponding actions synchronously, and the four connecting rods 5 are evenly distributed rectangularly on the bottom surface of the lifting seat 3, during the lifting process of the lifting seat 3, the two guide components 2 can limit the two sides of the lifting seat 3, and in conjunction with the balancing levers 6, the connecting rods 5 mutually counterbalance each other, causing each connecting rod 5 to simultaneously unfold or fold. That is, the two sets of linkage balancing components can limit the other two sides of the lifting seat 3, thereby enabling the lifting seat 3 to rise and fall in a balanced manner at all positions, ensuring the consistency of the lifting seat 3 at all positions during lifting, and exhibiting excellent stability.

[0035] like Figure 5 As shown, the connection between the two-link 5 and the balance rod 6 is as follows: a first slot 511 is provided at the first end of each upper curved arm 51; a second slot 521 is provided at the first end of each lower curved arm 52; the first end of the lower curved arm 52 is inserted into the first slot 511; one end of the balance rod 6 is correspondingly inserted into the second slot 521; in addition, hinge shafts 53 are respectively passed through the balance rod 6, both sides of the first slot 511, and both sides of the second slot 521, so that one upper curved arm 51, one lower curved arm 52, and one end of the balance rod 6 are hinged together by a hinge shaft 53. Therefore, by inserting both ends of the balance rod 6 into the second slots 521 of the two two-link 5 and connecting them with hinge shafts 53, when the two-link 5 pulls the balance rod 6 using the hinge shafts 53, it forces the two hinge shafts 53 to move simultaneously, thereby causing the two two-link 5 to move simultaneously.

[0036] like Figure 5As shown, specifically, the second end of each upper curved arm 51 is hinged to the lifting seat 3 via a pivot (not shown in the figure); the second end of each lower curved arm 52 is hinged to the base 1 via a pivot (not shown in the figure). Since the structure of connecting to other objects using a pivot is existing technology, it will not be described in detail here.

[0037] like Figures 1-4 As shown, multiple first support blocks 11 are provided on the top surface of the base 1; multiple second support blocks 31 are provided on the bottom surface of the lifting seat 3; each first support block 11 and a second support block 31 can abut against each other. Furthermore, the multiple first support blocks 11 are evenly distributed around the base 1; the multiple second support blocks 31 are evenly distributed around the lifting seat 3. This arrangement allows the lifting seat 3 to be prevented from descending further when it reaches a preset position by the abutting action of the first support blocks 11 and the second support blocks 31, thus avoiding damage to the connecting rod 5 and other components due to the lifting seat 3 being too low.

[0038] In this embodiment, the lifting drive device 4 is a hydraulic cylinder.

[0039] The specific working principle of this utility model is described below to help you understand it:

[0040] First, a pressure mechanism with a nozzle (not shown in the figure) is installed on the lifting seat 3. When the height of the pressure mechanism needs to be adjusted according to different molds, the lifting drive device 4 can be used to drive the lifting seat 3 to perform the corresponding rising or falling movements. Then, when the lifting seat 3 moves, it will synchronously drive the two connecting rods 5 to unfold or fold. The setting of each balance rod 6 can ensure the synchronicity of the movements of the corresponding two connecting rods 5. At the same time, the guide post 22 will also move in and out of the guide hole 23 to form a limit on the lifting seat 3. After the four connecting rods 5 are set in a rectangular shape on the bottom surface of the lifting seat 3, and then combined with the two limit blocks 21 and the two guide posts 22, the four connecting rods 5 can achieve synchronous movement. In this way, the stability of the lifting seat 3 during lifting can be greatly guaranteed, that is, the stability of the pressure mechanism during lifting can be guaranteed. For example, when the two-link 5 is unfolding, the corresponding balance rod 6 will move laterally in sync with the upward movement. That is, the balance rod 6 is actually moving upward at an angle, and its movement will force the two hinge shafts 53 to move simultaneously (i.e., the movements of the two two-link 5 are synchronized). Then, due to the action of this link balance component in conjunction with the limit block 21 and the guide post 22, it will force the other link balance component to move synchronously, thus synchronizing the movements of each link balance component and making the positions of the lifting seat 3 consistent when it rises.

[0041] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also includes such modifications and variations.

Claims

1. A lifting mechanism for a balanced linkage support of a die-casting machine, characterized in that: It includes a base, a lifting seat, a lifting drive device, two sets of linkage balance assemblies, and two sets of guide assemblies; The lifting drive device is mounted on the base and the output end of the lifting drive device is connected to the middle position of the bottom surface of the lifting base; Each of the connecting rod balancing assemblies includes two two-bar linkages and a balance rod; each two-bar linkage includes an upper curved arm and a lower curved arm that are hinged to each other at their first ends by a hinge shaft, the second end of the upper curved arm is hinged to the lifting seat, and the second end of the lower curved arm is hinged to the base; the two ends of the balance rod are respectively hinged to the hinge shafts of the corresponding two two-bar linkages; the four two-bar linkages in the two connecting rod balancing assemblies are evenly distributed in a rectangular shape between the lifting seat and the base, and the two balance rods are symmetrically arranged left and right; Each set of guide components includes two limiting blocks and two guide posts; the two limiting blocks are respectively located between the two balance rods, one limiting block is located between one end of the two balance rods, and the other limiting block is located between the other ends of the two balance rods; a downwardly extending guide hole is opened on the top surface of each limiting block; the upper ends of the two guide posts are respectively connected to the lifting seat, and the lower ends are respectively matched and inserted into the two guide holes; By setting up two connecting rod balance components and two guiding components, when the lifting drive device drives the lifting seat to rise and fall, each of the balance pull rods can drive the corresponding two connecting rods to unfold or fold synchronously, and the guide hole synchronously limits the guide column, thereby ensuring the consistency of each position of the lifting seat during lifting and falling.

2. The lifting mechanism of the balance linkage support for the die-casting machine according to claim 1, characterized in that: A first slot is provided at the first end of each upper curved arm; a second slot is provided at the first end of each lower curved arm; the first end of the lower curved arm is inserted into the first slot; one end of the balance rod is inserted into the second slot; the hinge shaft passes through the balance rod, both sides of the first slot, and both sides of the second slot.

3. The lifting mechanism of the balance linkage support for the die-casting machine according to claim 1, characterized in that: The second end of each of the upper curved arms is hinged to the lifting seat via a pivot; the second end of each of the lower curved arms is hinged to the base via a pivot.

4. The lifting mechanism of the balance linkage support for the die-casting machine according to claim 1, characterized in that: Multiple first support blocks are provided on the top surface of the base; multiple second support blocks are provided on the bottom surface of the lifting seat; each first support block and one second support block can abut against each other.

5. The lifting mechanism for the balanced linkage support of the die-casting machine according to claim 4, characterized in that: Multiple first support blocks are evenly distributed around the base; multiple second support blocks are evenly distributed around the lifting seat.

6. The lifting mechanism of the balance linkage support for the die-casting machine according to claim 1, characterized in that: The lifting drive device is a hydraulic cylinder.

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