Linkage mechanism and material strip connecting device having same

Abstract

The present utility model relates to a linkage mechanism and a material strip connecting device having same, the linkage mechanism comprising a mounting plate. The linkage mechanism and material strip connecting device have an optimized structural design; by providing a plurality of cams on a rotating shaft, and providing on a mounting base a plurality of swing arm assemblies located on one side or two sides of the rotating shaft and corresponding to the plurality of cams on a one-to-one basis, said swing arm assemblies being eccentrically drivingly connected to the cams by means of follower devices, when rotating, by means of the plurality of cams, the rotating shaft drives the plurality of swing arm assemblies to swing up and down synchronously, creating linkage among the plurality of swing arm assemblies, and thereby creating linkage among a plurality of external mechanisms connected to connecting assemblies of the swing arm assemblies. In addition, the manufacturing requirements for the cams and swing arm assemblies are low, and the noise and vibration generated when the cams drive the follower devices to rotate are also relatively low, allowing a user to have a better use experience.

Description

A linkage mechanism and a material strip connecting device having the linkage mechanism Technical Field

[0001] The utility model relates to the technical field of SMT splicing tape processing equipment, and more particularly to a linkage mechanism and a tape splicing device with the linkage mechanism. Background Art

[0002] With the development of electronic equipment, the application of splicing tape is becoming more and more extensive, and the demand is increasing. Splicing tape can realize splicing without stopping the machine during the processing of electronic equipment. Compared with stopping the machine to splice, it greatly reduces the splicing time, improves the splicing efficiency, and thus greatly reduces the splicing cost.

[0003] For example, patent number CN201710002594.3 discloses a bonding machine for trimming new and old SMT splice tapes, which includes a pressing device and a cutting device for cutting the old tape. Multiple devices in the bonding machine operate independently and are not interconnected. Errors and inconsistencies may occur between different devices, leading to delays in the processing of cutting, pre-tearing, gluing, and laminating new and old materials, increased waiting time, and discontinuity in the production process, thereby reducing overall production efficiency.

[0004] In the field of mechanics, most common linkage mechanisms are gear transmissions, which are mechanisms that transmit power and motion through the meshing of gears. They can achieve transmission and speed conversion between different axes. Common gear transmissions include rack and pinion transmissions, planetary gear transmissions, etc. However, due to the impact and friction generated during the meshing of gears, gear transmissions often generate large noise and vibrations, causing interference to the mechanical system and the surrounding environment. Gear transmissions also have high requirements for the manufacturing accuracy and meshing accuracy of gears. If there are deviations in the manufacturing or use of gears, the working efficiency of the gear transmission will be reduced, the noise will increase, and the user experience will be poor. Therefore, it is necessary to develop a linkage mechanism and a material strip receiving device with a linkage mechanism. Technical issues

[0005] The technical problem to be solved by the present invention is to provide a linkage mechanism and a material strip splicing device having the linkage mechanism in view of the above-mentioned defects of the prior art. Technical Solutions

[0006] On the one hand, the technical solution adopted by the present invention to solve its technical problem is: a linkage mechanism, including a mounting plate, wherein a rotating shaft and a driving assembly for driving the rotating shaft to rotate axially are provided on the mounting plate; a plurality of cams are fixedly sleeved on the rotating shaft, and the mounting plate is located on one side or both sides of the rotating shaft and is provided with a plurality of swing arm assemblies corresponding to the cams one by one; the swing arm assembly includes a swing arm; one end of the swing arm is rotatably connected to the mounting plate, and the other end is provided with a connecting assembly for connecting to an external structure; the side of the swing arm facing the cam is further provided with a follower device eccentrically connected to the cam; when the rotating shaft rotates, the plurality of cams respectively drive the plurality of swing arm assemblies to swing up and down synchronously;

[0007] The linkage mechanism of the present invention comprises a plurality of cams, which are sequentially arranged along the length direction of the rotating shaft as a first cam, a second cam, a third cam, and a fourth cam; and a plurality of swing arm assemblies, which are respectively a first swing arm assembly corresponding to the first cam, a second swing arm assembly corresponding to the second cam, a third swing arm assembly corresponding to the third cam, and a fourth swing arm assembly corresponding to the fourth cam.

[0008] The linkage mechanism of the utility model is characterized in that, the left outer surface of the first cam is provided with a first annular groove and a first inner cam in sequence from the outside to the inside, and the right outer surface is provided with a second annular groove and a second inner cam in sequence from the outside to the inside; the first swing arm assembly is composed of two first swing arms respectively provided on the left and right sides of the first cam; when assembled in place, the first follower devices on the two first swing arms are respectively inserted into the first annular groove and the second annular groove, the first inner cam drives the first follower device in the first annular groove to move, and the second inner cam drives the first follower device in the second annular groove to move;

[0009] In the linkage mechanism of the present invention, the phase angle of the first inner cam and the phase angle of the second inner cam are staggered with each other, and when the rotating shaft rotates, the two first swing arms in the first swing arm assembly respectively drive the two external structures to move relative to or toward each other;

[0010] The linkage mechanism of the utility model is characterized in that, any outer side surface of the second cam is provided with a third annular groove and a third inner cam in sequence from the outside to the inside axially; the second swing arm assembly is a second swing arm provided on one side of the third annular groove; when assembled in place, the second follower on the second swing arm is inserted into the third annular groove, and the third inner cam drives the second follower in the third annular groove to move;

[0011] The linkage mechanism of the present invention is characterized in that a fifth cam is fixedly sleeved on each end of the rotating shaft; the mounting plate is located at each end of the rotating shaft and is provided with a fifth swing arm assembly corresponding to the fifth cam; the fifth swing arm assembly is in transmission connection with the fifth cam;

[0012] The linkage mechanism of the present invention, wherein the fifth cam is an outer cam, and the fifth swing arm assembly is a third swing arm provided on one side of the fifth cam; when assembled in place, the outer surface of the third follower on the third swing arm is in transmission connection with the outer surface of the outer cam;

[0013] In the linkage mechanism of the present invention, the areas of the first cam, the second cam, the third cam, and the fourth cam are all larger than the area of ​​the fifth cam;

[0014] The linkage mechanism of the utility model, wherein one end of the swing arm is rotatably connected to the mounting plate via a hinge seat;

[0015] On the other hand, the present invention further discloses a material strip splicing device, wherein the device includes the linkage mechanism as described above. Beneficial effects

[0016] The beneficial effects of the present invention are that the linkage mechanism and the material strip receiving device are cleverly designed in structure, by arranging multiple cams on the rotating shaft, and arranging multiple groups of swing arm assemblies corresponding to the multiple cams on one side or both sides of the mounting seat of the rotating shaft; the swing arm assembly is eccentrically connected to the cam through a follower device; when the rotating shaft rotates, the multiple cams respectively drive the multiple groups of swing arm assemblies to swing up and down synchronously, so that the multiple groups of swing arm assemblies can be linked, and then the multiple external mechanisms connected to the connecting assemblies of the swing arm assemblies can be linked, and the manufacturing requirements of the cam and the swing arm assembly are not high, and the noise and vibration generated when the cam drives the follower device to rotate are also relatively low, so the user experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0018] FIG1 is a structural diagram of a linkage mechanism according to a preferred embodiment of the present invention;

[0019] FIG2 is a second structural diagram of a linkage mechanism according to a preferred embodiment of the present invention. Modes for Carrying Out the Invention

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] A linkage mechanism according to a preferred embodiment of the present invention, as shown in Figures 1-2, comprises a mounting plate 10, on which is provided a rotating shaft 11 and a driving assembly (not shown) for driving the rotating shaft 11 to rotate axially. Specifically, the driving assembly drives the rotating shaft to rotate back and forth axially; a plurality of cams are fixedly sleeved on the rotating shaft 11, and the mounting plate 10 is provided with a plurality of swing arm assemblies corresponding to the cams on one or both sides of the rotating shaft; the swing arm assembly comprises a swing arm; one end of the swing arm is rotatably connected to the mounting plate 10, and the other end is rotatably provided with a connecting assembly 20 for connecting to an external structure; wherein the connecting assembly 20 is a structure that can be used to connect to other structures, such as a connecting bearing and a connecting rod; a follower device eccentrically connected to the cam is also provided on the side of the swing arm facing the cam; when the rotating shaft 11 rotates, the plurality of cams respectively drive the plurality of swing arm assemblies to swing up and down synchronously.

[0022] The linkage mechanism and the material strip receiving device are cleverly designed in structure. A plurality of cams are arranged on the rotating shaft, and a plurality of swing arm assemblies corresponding to the plurality of cams are arranged on one side or both sides of the mounting seat of the rotating shaft. The swing arm assembly is eccentrically connected to the cam through a follower device. When the rotating shaft rotates, the plurality of swing arm assemblies are driven by the plurality of cams to swing up and down synchronously, so that the plurality of swing arm assemblies are linked, and then the plurality of external mechanisms connected to the connecting assemblies of the swing arm assemblies are linked. The manufacturing requirements of the cam and the swing arm assembly are not high, and the noise and vibration generated when the cam drives the follower device to rotate are also relatively low, so the user experience is better.

[0023] Alternatively, the multiple cams may have the same structure, simplifying manufacture. Alternatively, the multiple cams may have different structures. In one embodiment, the multiple cams are sequentially arranged along the length of the rotating shaft 11 as a first cam 12, a second cam 13, a third cam 14, and a fourth cam 15. The multiple sets of swing arm assemblies are respectively a first swing arm assembly 16 corresponding to the first cam 12, a second swing arm assembly 17 corresponding to the second cam 13, a third swing arm assembly 18 corresponding to the third cam 14, and a fourth swing arm assembly 19 corresponding to the fourth cam 15. The first, second, third, and fourth swing arm assemblies are each connected to multiple external structures via a connecting assembly. Rotation of the rotating shaft then causes the multiple cams to drive the multiple external structures to move synchronously, resulting in good linkage and a simple structure. Alternatively, the number of cams is not limited to the aforementioned cams; there may also be N cams, where N is a positive integer. Accordingly, there are also N sets of swing arm assemblies. These simple variations in the number of cams fall within the scope of protection of the present invention.

[0024] Furthermore, the left outer surface of the first cam 12 is provided with a first annular groove 121 and a first inner cam 122 axially from the outside to the inside, and the right outer surface is provided with a second annular groove 123 and a second inner cam 124 axially from the outside to the inside; the first swing arm assembly 16 is two first swing arms 161 respectively arranged on the left and right sides of the first cam 12; when assembled in place, the first follower devices 162 on the two first swing arms 161 are respectively inserted into the first annular groove 121 and the second annular groove 123, the first inner cam 122 drives the first follower device 162 in the first annular groove 121 to move, and the second inner cam 124 drives the first follower device 162 in the second annular groove 123 to move. Through the eccentric transmission connection between the two first swing arms 161 and the first cam, one or two external structures can be driven to move, the structure is compact and the cost is low.

[0025] In one embodiment, the first swing arm assembly can drive an external structure to move, the phase angle of the first inner cam coincides with the phase angle of the second inner cam, and the two swing arms in the first swing arm assembly can swing upward or downward synchronously in the same direction, so that the movement of the external structure can be more stable; optionally, the phase angle of the first inner cam 122 and the phase angle of the second inner cam 124 can also be staggered with each other. When the rotating shaft rotates, the two first swing arms in the first swing arm assembly can respectively drive the two external structures to move relative to or toward each other. For example, the two external structures are cutters respectively; by driving the two cutters to move relative to or toward each other by the two first swing arms, the two cutters are cut or separated, thereby achieving the purpose of automatic cutting.

[0026] Furthermore, any outer surface of the second cam 13 is axially provided with a third annular groove 131 and a third inner cam 132 in sequence from the outside to the inside; the second swing arm assembly 17 is a second swing arm 171 arranged on one side of the third annular groove 131; when assembled in place, the second follower 172 on the second swing arm 171 is inserted into the third annular groove 131, and the third inner cam 132 drives the second follower 172 in the third annular groove 131 to move, thereby driving the second swing arm to move up and down along a predetermined trajectory.

[0027] In this embodiment, the structure of the third cam 14 is the same as that of the second cam 13, and the structure of the third swing arm assembly 18 is also the same as that of the second swing arm assembly 17; the structure of the fourth cam 15 is the same as that of the first cam 12, and the structure of the fourth swing arm assembly 19 is also the same as that of the first swing arm assembly 16, which will not be repeated here; further, the first cam and the fourth cam are symmetrically arranged around the center of the rotating shaft.

[0028] Furthermore, a fifth cam 21 is fixedly sleeved on both ends of the rotating shaft 11; the mounting plate 10 is located at both ends of the rotating shaft 11 and has a fifth swing arm assembly 22 corresponding to the fifth cam 21; the fifth swing arm assembly 22 is transmission-connected to the fifth cam 21; the fifth cam 21 is an outer cam, and the fifth swing arm assembly 22 is a third swing arm 221 arranged on one side of the fifth cam 21; when assembled in place, the outer surface of the third follower 222 on the third swing arm 221 is transmission-connected to the outer surface of the outer cam; in one embodiment, the third swing arm 221 is located on one side of the rotating shaft, and the first swing arm 161 and the second swing arm 172 are located on the other side of the rotating shaft. Optionally, the first swing arm, the second swing arm and the third swing arm can also be located on the same side of the rotating shaft, and all of the above fall within the protection scope of the present utility model.

[0029] Furthermore, the areas of the first cam 12 , the second cam 13 , the third cam 14 and the fourth cam 15 are all larger than the area of ​​the fifth cam 21 .

[0030] Furthermore, one end of the swing arm is rotatably connected to the mounting plate 10 via the hinge seat 23, and the structure is stable.

[0031] Example 2:

[0032] A material strip splicing device includes the linkage mechanism as described in Example 1; in one embodiment, the material strip splicing device also includes a first opening and closing mechanism, a first cutting mechanism, an avoidance mechanism, a glue pressing mechanism, a second cutting mechanism and a second opening and closing mechanism that are arranged side by side in sequence; wherein the first opening and closing mechanism is used to control whether a new material strip is fed, the first cutting mechanism is used to cut the new material strip, the avoidance mechanism is used to support the material strip and avoid the shovel, the glue pressing mechanism is used to press the glued part between the new material strip head and the old material strip head, the second cutting mechanism is used to cut the old material strip, the second opening and closing mechanism is used to control whether the old material strip is fed, and the new material strip and the old material strip move relative to each other; the first opening and closing mechanism, the first The cutting mechanism, the avoidance mechanism, the glue pressing mechanism, the second cutting mechanism and the second opening and closing mechanism all move synchronously through the linkage mechanism to realize the functions of opening and closing the cover, cutting the material strip, pre-tearing the material strip, gluing, and gluing and pressing the material strip; specifically, the connecting component of the first swing arm assembly is connected to the first cutting mechanism, the connecting component of the second swing arm assembly is connected to the avoidance mechanism, the connecting component of the third swing arm assembly is connected to the glue pressing mechanism, the connecting component of the fourth swing arm assembly is connected to the second cutting mechanism, and the connecting components of the two fifth swing arm assemblies are respectively connected to the first opening and closing mechanism and the second opening and closing mechanism; the linkage between the multiple mechanisms is good, and the material connection is continuous, which greatly improves the overall production efficiency.

[0033] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. A linkage mechanism, comprising a mounting plate, characterized in that: A rotating shaft and a driving component for driving the rotating shaft to rotate axially are provided on the mounting plate; a plurality of cams are provided on the fixed sleeve on the rotating shaft, and a plurality of swing arm components corresponding to the cams are provided on one side or both sides of the rotating shaft; the swing arm component includes a swing arm; one end of the swing arm is rotatably connected to the mounting plate, and the other end is provided with a connecting component for connecting to an external structure; a follower device eccentrically connected to the cam is also provided on the side of the swing arm facing the cam; when the rotating shaft rotates, the plurality of cams respectively drive the plurality of swing arm components to swing up and down synchronously.

2. The linkage mechanism according to claim 1, characterized in that: The multiple cams are respectively the first cam, the second cam, the third cam, and the fourth cam along the length direction of the rotating shaft; the multiple groups of swing arm assemblies are respectively the first swing arm assembly corresponding to the first cam, the second swing arm assembly corresponding to the second cam, the third swing arm assembly corresponding to the third cam, and the fourth swing arm assembly corresponding to the fourth cam.

3. The linkage mechanism according to claim 2, characterized in that: The left outer surface of the first cam is provided with a first annular groove and a first inner cam axially from the outside to the inside, and the right outer surface is provided with a second annular groove and a second inner cam axially from the outside to the inside; the first swing arm assembly is two first swing arms respectively arranged on the left and right sides of the first cam; when assembled in place, the first followers on the two first swing arms are respectively inserted into the first annular groove and the second annular groove, the first inner cam drives the first follower in the first annular groove to move, and the second inner cam drives the first follower in the second annular groove to move.

4. The linkage mechanism according to claim 3, characterized in that: The phase angle of the first inner cam and the phase angle of the second inner cam are arranged alternately. When the rotating shaft rotates, the two first swing arms in the first swing arm assembly respectively drive the two external structures to move relative to or towards each other.

5. The linkage mechanism according to any one of claims 2 to 4, characterized in that: A third annular groove and a third inner cam are axially provided on any outer side surface of the second cam in sequence from the outside to the inside; the second swing arm assembly is a second swing arm arranged on one side of the third annular groove; when assembled in place, the second follower device on the second swing arm is inserted into the third annular groove, and the third inner cam drives the second follower device in the third annular groove to move.

6. The linkage mechanism according to claim 5, characterized in that: The two ends of the rotating shaft are respectively fixed with fifth cams; the mounting plate is located at the two ends of the rotating shaft and has fifth swing arm assemblies corresponding to the fifth cams; the fifth swing arm assembly is drivingly connected to the fifth cam.

7. The linkage mechanism according to claim 6, characterized in that: The fifth cam is an outer cam, and the fifth swing arm assembly is a third swing arm arranged on one side of the fifth cam; when assembled in place, the outer surface of the third follower device on the third swing arm is transmission connected to the outer surface of the outer cam.

8. The linkage mechanism according to claim 7, characterized in that: Areas of the first cam, the second cam, the third cam, and the fourth cam are all greater than an area of ​​the fifth cam.

9. The linkage mechanism according to claim 1, characterized in that: One end of the swing arm is rotatably connected to the mounting plate via a hinge seat.

10. A material strip receiving device, characterized in that: It comprises a linkage mechanism as described in any one of claims 1-9.

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