Automatic centering four-claw clamping device

Abstract

The utility model relates to an automatic centering four-jaw clamping device which comprises a mounting seat, a clamping driving mechanism, a fixing seat arranged at the bottom end of the mounting seat, a plurality of clamping jaw assemblies hinged to the fixing seat, a linkage assembly connected with the mounting seat in a sliding mode and a material taking mechanism arranged on the linkage assembly. The material taking mechanism is located among the multiple clamping jaw assemblies. The linkage assembly is hinged to the multiple clamping jaw assemblies, the clamping driving mechanism is used for driving the linkage assembly to slide in a lifting mode relative to the installation base, the multiple clamping jaw assemblies are driven to move through the linkage assembly, the synchronism is good when the multiple clamping jaw assemblies clamp materials, centering clamping of the materials is achieved, and the precision in the material machining process is guaranteed. Materials are conveyed among the multiple clamping jaw assemblies through the material taking mechanism, and the multiple clamping jaw assemblies can clamp the materials conveniently. The clamping driving mechanism can synchronously drive the material taking mechanism and the multiple clamping jaw assemblies to move through the linkage assembly, and the power source needed by material clamping is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping, in particular to an automatic centering four-claw clamping device. Background Art

[0002] As modern electronic components are developing in the direction of miniaturization, integration and high reliability, especially in the face of increasingly fierce market competition, the production and manufacturing equipment of electronic products are developing in the direction of high speed, high precision, intelligence, multi-function and other fully automated directions. The assembly of electronic information products, especially the printed boards of key components, needs to be produced through the mounting process. During the mounting process of the LED mounting machine, the LED patch needs to be positioned. Usually, the LED patch is a square patch, so a four-claw positioning mechanism is usually used to clamp the four sides of the LED patch for positioning. The existing LED patch clamping equipment, when clamping different LED patches, has poor synchronization when the clamping driver drives the movement of multiple clamping components, which leads to the problem of eccentric clamping when multiple clamping components clamp the LED patch, thereby affecting the subsequent processing accuracy of the LED patch. Moreover, the structure of the existing clamping drive mechanism is complex and the production cost is high. Therefore, the defects are very obvious, and it is urgent to provide a solution. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide an automatic centering four-claw clamping device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] 14. The invention relates to an automatic centering four-jaw clamping device, which comprises a mounting seat, a clamping drive mechanism arranged on the mounting seat, a fixed seat arranged at the bottom end of the mounting seat, a plurality of clamping jaw assemblies respectively hinged to the fixed seat, a linkage assembly slidably connected to the mounting seat, and a material picking mechanism arranged on the linkage assembly, wherein the material picking mechanism is located between the plurality of clamping jaw assemblies; the linkage assembly is respectively hinged to the plurality of clamping jaw assemblies, and the clamping drive mechanism is used to drive the linkage assembly to slide relative to the mounting seat in a lifting manner; when the linkage assembly slides downward relative to the mounting seat, the linkage assembly can synchronously drive the plurality of clamping jaw assemblies to rotate relative to the fixed seat in a direction away from each other, and the linkage assembly can also drive the material picking mechanism to move downward toward the material, and the material picking mechanism can grab the material; when the linkage assembly slides upward relative to the mounting seat, the linkage assembly can drive the material picking mechanism and the material grabbed by the material picking mechanism to move upward synchronously, and the linkage assembly can also synchronously drive the plurality of clamping jaw assemblies to rotate relative to the fixed seat in a direction close to each other, and the plurality of the clamping jaw assemblies can cooperate to clamp the material grabbed by the material picking mechanism.

[0006] Furthermore, the rotation avoidance groove includes a accommodating cavity arranged through the fixed seat, a pushing seat slidably arranged in the accommodating cavity and a plurality of linkage shafts rotatably arranged on the pushing seat, the plurality of jaw assemblies are respectively located in the accommodating cavity, the plurality of linkage shafts are arranged one by one corresponding to the plurality of jaw assemblies, the linkage shafts are inserted in the jaw assemblies and are rotatably connected with the jaw assemblies; the output end of the clamping drive mechanism is connected to the pushing seat; the material picking mechanism passes through the pushing seat.

[0007] Furthermore, the clamping jaw assembly includes a rotating shaft, a jaw body and a rotating part. The rotating shaft is rotatably inserted into the inner wall of the accommodating cavity, one end of the rotating part is clamped outside the middle part of the rotating shaft and is rotatably connected to the rotating shaft, and the other end of the rotating part is rotatably connected to the linkage shaft.

[0008] Furthermore, the clamping jaw assembly also includes an arc-shaped opening groove arranged on the rotating part, and the rotating shaft can protrude into the opening groove and be rotatably connected to the groove wall of the opening groove.

[0009] Furthermore, the rotation avoidance groove also includes a plurality of rotation avoidance grooves arranged on the pushing seat, and the rotation avoidance groove is used to provide the space required for the rotation of the clamping jaw assembly.

[0010] Furthermore, the linkage assembly includes a connecting rod, a sliding seat slidably connected to the mounting seat for lifting and lowering, and a clamping seat clamped outside the pushing seat, and the sliding seat and the clamping seat are connected via the connecting rod; the material picking mechanism is installed on the sliding seat and passes through the sliding seat and the pushing seat respectively.

[0011] Furthermore, the material picking mechanism includes a suction nozzle, a rotating joint and a driving motor arranged on a sliding seat of a linkage assembly, the driving motor shaft of the driving motor is a hollow structure, one end of the driving motor shaft is connected to the rotating joint, the other end of the driving motor shaft is connected to the suction nozzle, the suction nozzle and the rotating joint are connected via the driving motor shaft, and the suction nozzle is located at one end of the driving motor shaft close to the clamping jaw assembly.

[0012] Furthermore, the clamping drive mechanism includes a driver arranged on a mounting seat, a cam arranged at an output end of the driver, and a follower rod whose bottom end is connected to a sliding seat, and the follower rod is located below the cam; the top end of the follower rod can abut against a protrusion on the cam.

[0013] Furthermore, a driven wheel is rotatably provided on the follower rod, and the driven wheel abuts against a raised portion on the cam.

[0014] Furthermore, the four-jaw clamping device also includes a proximity switch arranged on the mounting seat, and the proximity switch is used to control the start and stop of the clamping drive mechanism.

[0015] Beneficial effects of the utility model: The utility model drives multiple jaw assemblies to move synchronously through the linkage assembly, and the multiple jaw assemblies have good synchronization and high precision when clamping materials, realizing the centering clamping of materials and ensuring the accuracy of material processing. The material is transported between the multiple jaw assemblies through the material picking mechanism, which is convenient for multiple jaw assemblies to clamp materials. The clamping drive mechanism can synchronously drive the material picking mechanism and multiple jaw assemblies to move respectively through the linkage assembly, reducing the power source required for material clamping and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 .

[0017] Figure 2 A partial cross-sectional view of the utility model Figure 1 .

[0018] Figure 3 A partial cross-sectional view of the utility model Figure 2 .

[0019] Figure 4 It is a partial exploded view of the utility model.

[0020] Figure 5 The three-dimensional structure of the utility model is shown in FIG. Figure 2 .

[0021] Description of reference numerals:

[0022] 1. Mounting seat; 2. Clamping drive mechanism; 3. Fixed seat; 4. Clamping claw assembly; 5. Linkage assembly; 6. Material picking mechanism; 7. Hollow hole; 8. Proximity switch; 21. Driver; 22. Cam; 23. Follower rod; 24. Driven wheel; 41. Rotating shaft; 42. Claw body; 43. Rotating part; 44. Opening groove; 51. Accommodating cavity; 52. Pushing seat; 53. Linkage shaft; 54. Rotation avoidance groove; 55. Connecting rod; 56. Sliding seat; 57. Card seat; 61. Suction nozzle; 62. Rotating joint; 63. Driving motor; 64. Driving motor shaft. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0024] like Figures 1 to 5As shown, the utility model provides an automatic centering four-claw clamping device, which includes a mounting seat 1, a clamping drive mechanism 2 arranged on the mounting seat 1, a fixed seat 3 arranged at the bottom end of the mounting seat 1, a plurality of clamping jaw assemblies 4 respectively hinged to the fixed seat 3, a linkage assembly 5 slidably connected to the mounting seat 1 and a material-retrieving mechanism 6 arranged on the linkage assembly 5, wherein the material-retrieving mechanism 6 is located between the plurality of clamping jaw assemblies 4; the linkage assembly 5 is respectively hinged to the plurality of clamping jaw assemblies 4, the clamping drive mechanism 2 is used to drive the linkage assembly 5 to slide relative to the mounting seat 1; when the linkage assembly 5 is relative to the mounting seat When the seat 1 slides downward, the linkage component 5 can synchronously drive the multiple jaw assemblies 4 to rotate relative to the fixed seat 3 in a direction away from each other, and the linkage component 5 can also drive the material-collecting mechanism 6 to move downward toward the material, and the material-collecting mechanism 6 can grab the material; when the linkage component 5 slides upward relative to the mounting seat 1, the linkage component 5 can drive the material-collecting mechanism 6 and the material grabbed by the material-collecting mechanism 6 to move upward synchronously, and the linkage component 5 can also synchronously drive the multiple jaw assemblies 4 to rotate relative to the fixed seat 3 in a direction close to each other, and the multiple jaw assemblies 4 can cooperate to clamp the material grabbed by the material-collecting mechanism 6.

[0025] In actual use, when the clamping jaw assembly 4 is required to clamp the material, the clamping drive mechanism 2 drives the linkage assembly 5 to slide downward relative to the mounting seat 1, and the linkage assembly 5 drives the multiple clamping jaw assemblies 4 to rotate in the direction away from each other relative to the fixing seat 3, so that the multiple clamping jaw assemblies 4 are in an open state, waiting to clamp the material. At the same time, the linkage assembly 5 also synchronously drives the material taking mechanism 6 to move downward, and grabs the material transported by the external device through the material taking mechanism 6. Then the clamping drive mechanism 2 drives the linkage assembly 5, the material taking mechanism 6 and the material to move upward in the opposite direction, and the material taking mechanism 6 drives the material to move between the multiple clamping jaw assemblies 4. The linkage assembly 5 synchronously drives the multiple clamping jaw assemblies 4 to move closer to each other, so that the multiple clamping jaw assemblies 4 clamp the material synchronously, and repeats the above actions. When the clamping drive mechanism 2 drives the multiple clamping jaw assemblies 4 to move in the direction away from each other through the linkage assembly 5, the multiple clamping jaw assemblies 4 release the material, thereby completing the clamping and release of the material. The utility model drives multiple jaw assemblies 4 to move synchronously through linkage assembly 5. Multiple jaw assemblies 4 have good synchronization and high precision when clamping materials, realize the centering clamping of materials, and ensure the precision of material processing. Materials are transported between multiple jaw assemblies 4 through material taking mechanism 6, which is convenient for multiple jaw assemblies 4 to clamp materials. The clamping drive mechanism 2 can synchronously drive the material taking mechanism 6 and multiple jaw assemblies 4 to move respectively through linkage assembly 5, which reduces the power source required for material clamping and saves production cost.

[0026] Furthermore, the linkage assembly 5 includes a accommodating cavity 51 arranged through the fixed seat 3, a pushing seat 52 slidably arranged in the accommodating cavity 51, and a plurality of linkage shafts 53 rotatably arranged on the pushing seat 52. The plurality of jaw assemblies 4 are respectively located in the accommodating cavity 51, and the plurality of linkage shafts 53 are arranged one by one corresponding to the plurality of jaw assemblies 4. The linkage shafts 53 are inserted into the jaw assemblies 4 and are rotatably connected to the jaw assemblies 4; the output end of the clamping drive mechanism 2 is connected to the pushing seat 52; and the material picking mechanism 6 passes through the pushing seat 52.

[0027] Specifically, the clamping jaw assembly 4 includes a rotating shaft 41, a jaw body 42 and a rotating portion 43. The rotating shaft 41 is rotatably inserted into the inner wall of the accommodating chamber 51. One end of the rotating portion 43 is clamped outside the middle of the rotating shaft 41 and is rotatably connected to the rotating shaft 41. The other end of the rotating portion 43 is rotatably connected to the linkage shaft 53. The rotating portion 43 is connected to the jaw body 42. In actual use, the clamping drive mechanism 2 drives the push seat 52 to slide downward in the accommodating chamber 51, and the push seat 52 drives the linkage shaft 53 to rise and fall synchronously. The linkage shaft 53 pulls one end of the rotating portion 43 to move downward synchronously, and the other end of the rotating portion 43 rotates relative to the rotating shaft 41, thereby driving the multiple jaw bodies 42 to rotate respectively relative to the fixed seat 3, so that the multiple jaw bodies 42 are separated from each other, so that the material taking mechanism 6 can convey the material to between the multiple jaw bodies 42. Conversely, the clamping drive mechanism 2 drives the push seat 52 to rise, so that the multiple jaw bodies 42 can be driven to approach each other to clamp the material. The structure of the clamping jaw assembly 4 is simple, and the pushing seat 52, the fixing seat 3 and the clamping jaw assembly 4 are convenient to match.

[0028] Furthermore, the clamping jaw assembly 4 further includes an arc-shaped opening slot 44 disposed on the rotating portion 43 , and the rotating shaft 41 can protrude into the opening slot 44 and be rotatably connected to the slot wall of the opening slot 44 .

[0029] In actual use, an open groove 44 is provided on the rotating portion 43 to facilitate the quick connection between the rotating portion 43 and the rotating shaft 41 , which is beneficial to the quick assembly of the clamping jaw assembly 4 .

[0030] Furthermore, the linkage assembly 5 also includes a plurality of rotation avoidance grooves 54 disposed on the pushing seat 52 , and the rotation avoidance grooves 54 are used to provide space required for the rotation of the clamping jaw assembly 4 .

[0031] In actual use, the plurality of rotation avoidance grooves 54 are arranged one by one corresponding to the plurality of clamping jaw assemblies 4. When the push seat 52 drives the rotating part 43 to rotate downward through the linkage shaft 53, the claw body 42 and the rotating part 43 can rotate in the rotation avoidance grooves 54. The rotation avoidance grooves 54 prevent the clamping jaw assembly 4 from conflicting with the push seat 52 during the rotation process, thereby increasing the rotation stroke of the clamping jaw assembly 4.

[0032] Furthermore, the linkage assembly 5 includes a connecting rod 55, a sliding seat 56 slidably connected to the mounting seat 1 for lifting and lowering, and a clamping seat 57 clamped outside the pushing seat 52, and the sliding seat 56 and the clamping seat 57 are connected via the connecting rod 55; the material picking mechanism 6 is installed on the sliding seat 56 and passes through the sliding seat 56 and the pushing seat 52 respectively.

[0033] Specifically, the material taking mechanism 6 includes a suction nozzle 61, a rotary joint 62, and a driving motor 63 disposed on the sliding seat 56 of the linkage assembly 5. The driving motor shaft 64 of the driving motor 63 is a hollow structure. One end of the driving motor shaft 64 is connected to the rotary joint 62, and the other end of the driving motor shaft 64 is connected to the suction nozzle 61. The suction nozzle 61 is connected to the rotary joint 62 via the driving motor shaft 64. The suction nozzle 61 is located at one end of the driving motor shaft 64 close to the clamping jaw assembly 4. In actual use, the sliding seat 56 is driven to slide relative to the mounting seat 1 by the clamping driving mechanism 2, thereby synchronously driving the connecting rod 55, the clamping seat 57 and the pushing seat 52 to slide synchronously, so as to facilitate the material taking mechanism 6 to take materials. When taking materials, the external suction structure is connected with the rotary joint 62, and the air in the rotary joint 62, the drive motor shaft 64 and the suction nozzle 61 is extracted to generate negative pressure, so that the suction nozzle 61 can suck the materials, and the drive motor 63 can drive the materials to rotate through the suction nozzle 61 rod, so as to correct the position of the materials, further improve the material conveying accuracy, and reduce the production cost. Preferably, the plurality of the clamping jaw assemblies 4 are symmetrically arranged along the central axis of the suction nozzle 61.

[0034] Furthermore, the clamping drive mechanism 2 includes a driver 21 arranged on the mounting seat 1, a cam 22 arranged at the output end of the driver 21, and a follower rod 23 whose bottom end is connected to the sliding seat 56 of the linkage assembly 5, and the follower rod 23 is located below the cam 22; the top end of the follower rod 23 can contact the protrusion on the cam 22.

[0035] In actual use, the driver 21 drives the cam 22 to rotate. When the cam 22 rotates until the protrusion contacts the follower rod 23, the follower rod 23 moves downward under the push of the protrusion of the cam 22, and simultaneously drives the sliding seat 56 to slide downward relative to the mounting seat 1, thereby driving the clamping jaw assembly 4 to open and close and the material taking mechanism 6 to move through the linkage assembly 5. The structure of the clamping drive mechanism 2 is simple and compact. The clamping drive mechanism 2 can also use existing cylinders, electric push rods or linear motors that can drive the linkage assembly 5 to move linearly, which will not be repeated here.

[0036] Furthermore, a driven wheel 24 is rotatably provided on the follower rod 23 , and the driven wheel 24 abuts against a raised portion on the cam 22 .

[0037] A driven wheel 24 is added. When the cam 22 rotates and contacts the driven wheel 24 , it will drive the driven wheel 24 to rotate relative to the follower rod 23 , thereby reducing the friction force of the raised portion of the cam 22 in the process of driving the follower rod 23 to move, which is beneficial to the accurate and stable transmission of the cam 22 .

[0038] Specifically, a hollow hole 7 is provided on the mounting seat 1. The hollow hole 7 is provided to help reduce the weight of the mounting seat 1.

[0039] Furthermore, the four-jaw clamping device also includes a proximity switch 8 arranged on the mounting base 1, and the proximity switch 8 is used to control the start and stop of the clamping drive mechanism 2.

[0040] In actual use, when the proximity switch 8 senses that the sliding seat 56 has moved to the restricted position, the clamping drive mechanism 2 is controlled to stop, and the clamping drive mechanism 2 accurately drives the jaw assembly 4 to move, thereby achieving stable follow-up of the jaw assembly 4.

[0041] All technical features in this embodiment can be freely combined according to actual needs.

[0042] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. An automatic centering four-claw clamping device, characterized in that: The invention comprises a mounting seat (1), a clamping drive mechanism (2) arranged on the mounting seat (1), a fixed seat (3) arranged at the bottom end of the mounting seat (1), a plurality of clamping jaw assemblies (4) respectively hinged to the fixed seat (3), a linkage assembly (5) slidably connected to the mounting seat (1), and a material taking mechanism (6) arranged on the linkage assembly (5), wherein the material taking mechanism (6) is located between the plurality of clamping jaw assemblies (4); the linkage assembly (5) is respectively hinged to the plurality of clamping jaw assemblies (4); the clamping drive mechanism (2) is used to drive the linkage assembly (5) to slide relative to the mounting seat (1); when the linkage assembly (5) slides downward relative to the mounting seat (1), the material taking mechanism (6) is moved upward and downward. The linkage assembly (5) can synchronously drive the plurality of clamping assemblies (4) to rotate relative to the fixed seat (3) in a direction away from each other, and the linkage assembly (5) can also drive the material taking mechanism (6) to move downward toward the material, and the material taking mechanism (6) can grab the material; when the linkage assembly (5) slides upward relative to the mounting seat (1), the linkage assembly (5) can drive the material taking mechanism (6) and the material grabbed by the material taking mechanism (6) to move upward synchronously, and the linkage assembly (5) can also synchronously drive the plurality of clamping assemblies (4) to rotate relative to the fixed seat (3) in a direction close to each other, and the plurality of clamping assemblies (4) can cooperate to clamp the material grabbed by the material taking mechanism (6).

2. The automatic centering four-jaw clamping device according to claim 1, characterized in that: The linkage assembly (5) comprises a receiving cavity (51) arranged through the fixed seat (3), a pushing seat (52) slidably arranged in the receiving cavity (51), and a plurality of linkage shafts (53) rotatably arranged on the pushing seat (52); the plurality of clamping jaw assemblies (4) are respectively located in the receiving cavity (51); the plurality of linkage shafts (53) are arranged in a one-to-one correspondence with the plurality of clamping jaw assemblies (4); the linkage shafts (53) are inserted into the clamping jaw assemblies (4) and are rotatably connected to the clamping jaw assemblies (4); the output end of the clamping drive mechanism (2) is connected to the pushing seat (52); and the material taking mechanism (6) passes through the pushing seat (52).

3. The automatic centering four-jaw clamping device according to claim 2 is characterized in that: The clamping jaw assembly (4) comprises a rotating shaft (41), a jaw body (42) and a rotating portion (43); the rotating shaft (41) is rotatably inserted into the inner wall of the accommodating cavity (51); one end of the rotating portion (43) is clamped outside the middle of the rotating shaft (41) and is rotatably connected to the rotating shaft (41); the other end of the rotating portion (43) is rotatably connected to the linkage shaft (53).

4. The automatic centering four-jaw clamping device according to claim 3 is characterized in that: The clamping jaw assembly (4) further comprises an arc-shaped opening groove (44) arranged on the rotating portion (43), and the rotating shaft (41) can protrude into the opening groove (44) and be rotatably connected to the groove wall of the opening groove (44).

5. The automatic centering four-jaw clamping device according to claim 2, characterized in that: The linkage assembly (5) further comprises a plurality of rotation avoidance grooves (54) arranged on the pushing seat (52), wherein the rotation avoidance grooves (54) are used to provide space required for the rotation of the clamping jaw assembly (4).

6. The automatic centering four-claw clamping device according to claim 2, characterized in that: The linkage assembly (5) comprises a connecting rod (55), a sliding seat (56) connected to the mounting seat (1) in a lifting and sliding manner, and a clamping seat (57) clamped outside the pushing seat (52), wherein the sliding seat (56) and the clamping seat (57) are connected via the connecting rod (55); the material taking mechanism (6) is mounted on the sliding seat (56) and passes through the sliding seat (56) and the pushing seat (52) respectively.

7. The automatic centering four-jaw clamping device according to claim 1, characterized in that: The material picking mechanism (6) comprises a suction nozzle (61), a rotary joint (62) and a driving motor (63) arranged on the linkage assembly (5); the driving motor shaft (64) of the driving motor (63) is a hollow structure; one end of the driving motor shaft (64) is connected to the rotary joint (62); the other end of the driving motor shaft (64) is connected to the suction nozzle (61); the suction nozzle (61) and the rotary joint (62) are connected via the driving motor shaft (64); the suction nozzle (61) is located at one end of the driving motor shaft (64) close to the clamping jaw assembly (4).

8. The automatic centering four-jaw clamping device according to claim 6, characterized in that: The clamping drive mechanism (2) comprises a driver (21) arranged on a mounting seat (1), a cam (22) arranged at an output end of the driver (21), and a follower rod (23) whose bottom end is connected to a sliding seat (56), wherein the follower rod (23) is located below the cam (22); and the top end of the follower rod (23) can abut against a protruding portion on the cam (22).

9. The automatic centering four-jaw clamping device according to claim 8, characterized in that: A driven wheel (24) is rotatably arranged on the follower rod (23), and the driven wheel (24) abuts against a raised portion on the cam (22).

10. An automatic centering four-jaw clamping device according to any one of claims 1 to 9, characterized in that: The four-claw clamping device also includes a proximity switch (8) arranged on the mounting seat (1), and the proximity switch (8) is used to control the start and stop of the clamping drive mechanism (2).

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