Double-link mechanism

Abstract

The present invention discloses a double-link mechanism, which relates to the field of mechanical mechanisms and includes a machine base, a first guide rail seat and a second guide rail seat being installed on the upper part of the machine base, a crankshaft being rotatably installed in the machine base, a first connecting rod and a second connecting rod being rotatably installed on the crankshaft, a first swing arm being hingedly installed on the outer side of the first connecting rod, a first slider being hingedly installed on the upper end of the first swing arm, the first slider being slidably installed in the first guide rail seat, a second swing arm being hingedly installed on the outer side of the second connecting rod, a second slider being hingedly installed on the upper end of the second swing arm, and the second slider being slidably installed in the second guide rail seat; two separately arranged first positioning rings are formed on the inner side of the first connecting rod, the first positioning rings are rotatably installed on the crankshaft, two separately arranged second positioning rings are formed on the inner side of the second connecting rod, the second positioning rings are rotatably installed on the crankshaft, and the two first positioning rings and the two second positioning rings are staggered with each other.

Description

Technical Field

[0001] The present invention relates to the field of mechanical mechanisms, in particular to a double-link mechanism. Background Art

[0002] The slider reciprocates on the guide rail seat, and each reciprocating motion can complete a process or process a product; the slider is generally driven by a crankshaft connecting rod mechanism. When the crankshaft rotates, the connecting rod drives the slider to perform linear reciprocating motion through the swing arm to complete the processing of the product.

[0003] The crankshaft-connecting rod mechanism currently on the market has the following problems: while the crankshaft is in operation, it is subjected to impact forces F1 and F2 from the connecting rods on both sides. F1 and F2 are of equal magnitude but opposite in direction, acting in an interlaced manner on the diameter of the crankshaft. This causes an imbalance in the radial force of the crankshaft, making it prone to vibration. This not only causes wear on the crankshaft itself, but also affects the smooth operation of other components connected to it, resulting in unstable product quality and low production efficiency. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention provides a technical solution that can solve the above-mentioned problems.

[0005] A double-link mechanism includes a machine base, a first guide rail base and a second guide rail base are fixedly mounted on the upper part of the machine base, a crankshaft is rotatably mounted in the machine base, a first connecting rod and a second connecting rod are rotatably mounted on the crankshaft, a first swing arm is hingedly mounted on the outer side of the first connecting rod, a middle part of the first swing arm is hingedly mounted on the left side of the machine base, a first slider is hingedly mounted on the upper end of the first swing arm, the first slider is slidably mounted in the first guide rail base, a second swing arm is hingedly mounted on the outer side of the second connecting rod, a middle part of the second swing arm is hingedly mounted on the right side of the machine base, a second slider is hingedly mounted on the upper end of the second swing arm, and the second slider is slidably mounted in the second guide rail base;

[0006] Two separately arranged first positioning rings are formed on the inner side of the first connecting rod, and the first positioning rings are rotatably mounted on the crankshaft. Two separately arranged second positioning rings are formed on the inner side of the second connecting rod, and the second positioning rings are rotatably mounted on the crankshaft. The two first positioning rings and the two second positioning rings are staggered with each other.

[0007] As a further solution of the present invention: a first adjustable screw is provided between the first swing arm and the first slider, the left end of the first adjustable screw is hingedly mounted on the upper end of the first swing arm, and the right end of the first adjustable screw is hingedly mounted on the left part of the first slider.

[0008] As a further solution of the present invention: a second adjustable screw is provided between the second swing arm and the second slider, the right end of the second adjustable screw is hingedly installed on the upper end of the second swing arm, and the left end of the second adjustable screw is hingedly installed on the right part of the second slider.

[0009] As a further solution of the present invention: the first positioning ring includes a first semicircular ring and a second semicircular ring, the first semicircular ring is formed on the inner side of the first connecting rod, and the second semicircular ring is installed on the first semicircular ring by screws.

[0010] As a further solution of the present invention: the second positioning ring includes a third semicircular ring and a fourth semicircular ring, the third semicircular ring is formed on the inner side of the second connecting rod, and the fourth semicircular ring is installed on the third semicircular ring by screws.

[0011] As a further solution of the present invention: a positioning shaft is fixedly installed on the front side of the first connecting rod and the second connecting rod, a limiting rod is rotatably installed on the positioning shaft, and a positioning block is formed on the outer side of the lower end of the first swing arm and the second swing arm, a through hole is formed on the positioning block, and the limiting rod is correspondingly slidably installed in the through hole.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: when the crankshaft rotates, it drives the first connecting rod and the second connecting rod to move at the same time, the first connecting rod drives the first slider to slide on the first guide rail seat through the first swing arm, and the second connecting rod drives the second slider to slide on the second guide rail seat through the second swing arm, thereby completing the processing of the product; the first positioning ring and the second positioning ring are connected to the crankshaft in the form of an interactive grip, which not only makes the crankshaft evenly stressed during operation, but also the impact forces F1 and F2 on both sides can offset each other, so that the crankshaft runs more smoothly, wear is reduced, service life is improved, and the quality of the processed products is more stable and reliable.

[0013] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the machine base of the present invention.

[0017] Figure 3 It is a schematic diagram of the internal structure of the present invention.

[0018] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure.

[0019] Figure 5 It is a schematic diagram of the top view of the crankshaft of the present invention.

[0020] Figure 6 It is a schematic diagram of the explosion structure of the present invention.

[0021] Figure 7 It is a schematic diagram of the disassembled structure of the crankshaft, the first connecting rod and the second connecting rod of the present invention.

[0022] As shown in the figure: 1. Machine base; 2. First guide rail seat; 3. Second guide rail seat; 4. Crankshaft; 5. First connecting rod; 6. Second connecting rod; 7. First swing arm; 8. First slider; 9. Second swing arm; 10. Second slider; 11. First positioning ring; 12. Second positioning ring; 13. First adjustable screw; 14. Second adjustable screw; 11-1. First semicircular ring; 11-2. Second semicircular ring; 12-1. Third semicircular ring; 12-2. Fourth semicircular ring; 15. Positioning shaft; 16. Limit rod; 17. Positioning block; 18. Through hole. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-7, a double-link mechanism includes a machine base 1, a first guide rail seat 2 and a second guide rail seat 3 are fixedly installed on the upper part of the machine base 1, a crankshaft 4 is rotatably installed in the machine base 1, a first connecting rod 5 and a second connecting rod 6 are rotatably installed on the crankshaft 4, a first swing arm 7 is hingedly installed on the outer side of the first connecting rod 5, a middle part of the first swing arm 7 is hingedly installed on the left side of the machine base 1, a first slider 8 is hingedly installed on the upper end of the first swing arm 7, the first slider 8 is slidably installed in the first guide rail seat 2, and a second connecting rod 6 is hingedly installed on the outer side of the second connecting rod The middle part of the swing arm 9 and the second swing arm 9 are hingedly mounted on the right side of the machine base 1. The upper end of the second swing arm 9 is hingedly mounted with a second slider 10. The second slider 10 is slidably mounted in the second guide rail seat 3. The principle is as follows: when the crankshaft 4 rotates, it simultaneously drives the first connecting rod 5 and the second connecting rod 6 to move. The first connecting rod 5 drives the first slider 8 to slide on the first guide rail seat 2 through the first swing arm 7. The second connecting rod 6 drives the second slider 10 to slide on the second guide rail seat 3 through the second swing arm 9, thereby completing the processing of the product.

[0025] Two separately arranged first positioning rings 11 are formed on the inner side of the first connecting rod 5, and the first positioning rings 11 are rotatably mounted on the crankshaft 4. Two separately arranged second positioning rings 12 are formed on the inner side of the second connecting rod 6, and the second positioning rings 12 are rotatably mounted on the crankshaft 4. The two first positioning rings 11 and the two second positioning rings 12 are staggered with each other. In the improved transmission mechanism, the first positioning ring 11 and the second positioning ring 12 are connected to the crankshaft 4 in the form of an interactive grip, which not only makes the crankshaft 4 evenly stressed during operation, but also the impact forces F1 and F2 on both sides can offset each other, so that the crankshaft 4 runs more smoothly, wear is reduced, service life is improved, and the quality of the processed products is more stable and reliable.

[0026] As a further solution of the present invention: a first adjustable screw 13 is provided between the first swing arm 7 and the first slider 8, the left end of the first adjustable screw 13 is hingedly mounted on the upper end of the first swing arm 7, and the right end of the first adjustable screw 13 is hingedly mounted on the left part of the first slider 8; so that the distance between the first slider 8 and the first swing arm 7 can be adjusted.

[0027] As a further solution of the present invention: a second adjustable screw 14 is provided between the second swing arm 9 and the second slider 10, the right end of the second adjustable screw 14 is hingedly mounted on the upper end of the second swing arm 9, and the left end of the second adjustable screw 14 is hingedly mounted on the right part of the second slider 10; so that the distance between the second slider 10 and the second swing arm 9 can be adjusted.

[0028] As a further solution of the present invention: the first positioning ring 11 includes a first semicircular ring 11-1 and a second semicircular ring 11-2, the first semicircular ring 11-1 is formed on the inner side of the first connecting rod 5, and the second semicircular ring 11-2 is installed on the first semicircular ring 11-1 by screws; so that the first positioning ring 11 can be detachably installed on the crankshaft 4.

[0029] As a further solution of the present invention: the second positioning ring 12 includes a third semicircular ring 12-1 and a fourth semicircular ring 12-2, the third semicircular ring 12-1 is formed on the inner side of the second connecting rod 6, and the fourth semicircular ring 12-2 is installed on the third semicircular ring 12-1 by screws; so that the first positioning ring 11 can be detachably installed on the crankshaft 4.

[0030] As a further solution of the present invention: a positioning shaft 15 is fixedly installed on the front side of the first connecting rod 5 and the second connecting rod 6, and a limiting rod 16 is rotatably installed on the positioning shaft 15. The outer side of the lower end of the first swing arm 7 and the second swing arm 9 is formed with a positioning block 17, and a through hole 18 is formed on the positioning block 17. The limiting rod 16 is correspondingly slidably installed in the through hole 18; this makes the connection between the first connecting rod 5 and the first swing arm 7 more stable, and the connection between the second connecting rod 6 and the second swing arm 9 more stable.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. Double-link mechanism, including a base, characterized by: The first guide rail seat and the second guide rail seat are fixedly installed on the upper part of the machine base, the crankshaft is rotatably installed in the machine base, the first connecting rod and the second connecting rod are rotatably installed on the crankshaft, the outer side of the first connecting rod is hingedly installed with the first swing arm, the middle part of the first swing arm is hingedly installed on the left side of the machine base, the upper end of the first swing arm is hingedly installed with the first slider, the first slider is slidably installed in the first guide rail seat, the outer side of the second connecting rod is hingedly installed with the second swing arm, the middle part of the second swing arm is hingedly installed on the right side of the machine base, the upper end of the second swing arm is hingedly installed with the second slider, the second slider is slidably installed in the second guide rail seat; Two first locating rings are formed on the inner side of the first connecting rod and are rotatably mounted on the crankshaft. Two second locating rings are formed on the inner side of the second connecting rod and are rotatably mounted on the crankshaft. The two first locating rings are staggered with the two second locating rings. A first adjustable screw is provided between the first swing arm and the first slider, the left end of the first adjustable screw is hingedly mounted on the upper end of the first swing arm, and the right end of the first adjustable screw is hingedly mounted on the left portion of the first slider; A second adjustable screw is provided between the second swing arm and the second slider, the right end of the second adjustable screw is hingedly mounted on the upper end of the second swing arm, and the left end of the second adjustable screw is hingedly mounted on the right part of the second slider; The first positioning ring includes a first semicircular ring and a second semicircular ring, the first semicircular ring is formed on the inner side of the first connecting rod, and the second semicircular ring is installed on the first semicircular ring by screws; The second positioning ring includes a third semicircular ring and a fourth semicircular ring, the third semicircular ring is formed on the inner side of the second connecting rod, and the fourth semicircular ring is installed on the third semicircular ring by screws; The front sides of the first connecting rod and the second connecting rod are fixedly installed with a positioning shaft, and a limit rod is rotatably installed on the positioning shaft. The outer sides of the lower ends of the first swing arm and the second swing arm are formed with a positioning block, and a through hole is formed on the positioning block, and the limit rod is correspondingly slidably installed in the through hole.

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