Automatic rotary placing jig

Abstract

The invention relates to the field of jigs, in particular to an automatic rotary placing jig which comprises a jig assembly and an XYZ three-axis driving assembly used for driving the jig assembly to reciprocate between an injection molding machine and a belt conveyor, and the jig assembly comprises a fixing plate, a rotating shaft, a rotating plate, a rotating control assembly used for driving the rotating shaft to rotate, a suction cup base and a suction cup. The automatic rotary placing jig comprises a fixing plate, a mounting base is fixed to the top of the fixing plate, a driving motor is fixed to one side of the mounting base, a connecting arm is fixed to an output shaft of the driving motor, and the end of the connecting arm is connected with the output end of an XYZ three-axis driving assembly. The rotating control assembly can accurately drive the rotating plate to rotate by 180 degrees relative to the fixed plate according to the principle of worm and gear transmission and rack and gear meshing, and it is guaranteed that the two injection molding products face the same direction when transferred to the belt conveyor. By means of the design, the problem that the angles of injection products are inconsistent is solved, and convenience is provided for follow-up machining or packaging.

Description

Technical Field

[0001] The present invention relates to the field of jigs, and in particular to an automatic rotating placement jig. Background Art

[0002] After the injection molding process is completed, the injection molded product needs to be accurately removed from the injection molding machine by a robot fixture and properly placed on the belt conveyor for subsequent processing. It is worth noting that the injection molding machine can often inject two products at a time, and the two products are symmetrically arranged at 180 degrees. In the process of transferring them from the injection molding machine to the belt conveyor, one product needs to be rotated 180 degrees to ensure that the two are in the same direction on the conveyor belt.

[0003] However, the structure of the current robot on the market is generally complex, and this complexity is mainly reflected in the fact that it requires the precise coordination of multiple actuators to complete the operation. This complexity is particularly prominent when handling two injection molded products: the robot fixture needs to place one product on the belt conveyor first, and then adjust its own rotation to ensure the correct position of the second product before placing it on the conveyor. This series of operations is not only time-consuming, but also increases the risk of operational errors.

[0004] In addition, existing robot fixtures usually rely on the power provided by the air source when picking up and placing injection molded products. Once the factory stops supplying air, the robot will not be able to work properly, which undoubtedly limits the continuity and flexibility of production. In the case of unstable or interrupted air supply, the production line will have to suspend operation, resulting in loss of production efficiency and capacity.

[0005] Therefore, we propose an automated rotating placement fixture to solve the above problems. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides an automated rotating placement fixture.

[0007] The present invention provides an automated rotating placement jig, comprising a jig assembly and an XYZ three-axis drive assembly for driving the jig assembly to reciprocate between an injection molding machine and a belt conveyor, wherein the jig assembly comprises a fixed plate, a rotating shaft, a rotating plate, a rotation control assembly for driving the rotating shaft to rotate, a suction cup seat and a suction cup, a mounting seat is fixed to the top of the fixed plate, a driving motor is fixed to one side of the mounting seat, a connecting arm is fixed to the output shaft of the driving motor, and an end of the connecting arm is connected to the output end of the XYZ three-axis drive assembly, one end of the fixed plate is rotatably connected to the rotating shaft, one end of the rotating shaft is fixedly connected to the rotating plate, suction cup seats are installed at the ends of the rotating plate and the fixed plate, a suction cup is installed at the end of the suction cup seat, an L-shaped channel connected to the suction cup is provided in the suction cup seat, and the jig assembly also includes a blocking assembly for blocking and unblocking the L-shaped channel.

[0008] Preferably, the XYZ three-axis drive assembly includes a connecting plate, an X-axis linear motor, a Y-axis linear motor and a Z-axis linear motor, the X-axis linear motor is fixed to the bottom of the connecting plate, the Y-axis linear motor is fixed to the output end of the X-axis linear motor, the Z-axis linear motor is fixed to the output end of the Y-axis linear motor, and the end of the connecting arm is fixedly connected to the output end of the Z-axis linear motor.

[0009] Preferably, the rotation control assembly includes a worm wheel fixed at the end of the rotating shaft, a worm rotatably connected in a fixed plate, a first gear fixed at one end of the worm, and a first rack fixed on the belt conveyor, wherein the first rack is meshingly connected to the first gear, and the worm wheel is meshingly connected to the worm.

[0010] Preferably, the sealing assembly includes a U-shaped frame, a threaded cylinder, a threaded rod, an extrusion rod, a sealing plug, a connecting shaft, a second gear and a second rack, the bottoms of the rotating plate and the fixed plate are fixedly connected to the U-shaped frame, one side wall of the U-shaped frame is fixedly connected to a threaded cylinder, a threaded rod is threadedly connected in the threaded cylinder, an extrusion rod is fixed to one end of the threaded rod, a sealing plug is fixed to the end of the extrusion rod, a slide is embedded in the end of the threaded rod away from the extrusion rod, the other side wall of the U-shaped frame is rotatably connected to the connecting shaft through a bearing, a connecting part is fixed to one end of the connecting shaft, and the connecting part is slidably connected in the slide, the other end of the connecting shaft is fixed to the second gear, and the second rack is fixed on the belt conveyor.

[0011] Preferably, the end of the L-shaped channel is provided with a chamfer.

[0012] Preferably, the sealing plug is arranged in a conical shape.

[0013] Preferably, the ends of the first rack and the second rack are provided with square mounting portions, the width of the square mounting portions is greater than the corresponding widths of the first rack and the second rack, and mounting holes are provided at the four corners of the square mounting portions, and the mounting holes are stepped holes.

[0014] Preferably, a mounting groove is provided in the fixing plate, and the worm and the worm wheel are both arranged in the mounting groove.

[0015] Preferably, the connecting axis and one end of the L-shaped channel are on the same straight line.

[0016] Preferably, the mounting seat is U-shaped.

[0017] Compared with the related art, the present invention has the following beneficial effects:

[0018] 1. Accurate product positioning and rotation:

[0019] The rotation control assembly uses the principle of worm gear transmission and rack gear meshing to accurately drive the rotating plate to rotate 180 degrees relative to the fixed plate, ensuring that the two injection molded products are in the same direction when transferred to the belt conveyor. This design solves the problem of inconsistent angles of injection molded products and provides convenience for subsequent processing or packaging.

[0020] 2. No need for gas source to achieve flexible blocking and unblocking mechanism:

[0021] The plugging assembly realizes flexible plugging and unblocking of the L-shaped channel through the clever cooperation of the threaded rod, the extrusion rod and the sealing plug. When the injection molded product needs to be released, the meshing of the second gear and the second rack drives the threaded rod to move, so that the sealing plug is separated from the L-shaped channel, thereby destroying the vacuum environment between the suction cup and the injection molded product, realizing the smooth release of the product, and the product can be taken and placed without the help of an air source. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 A schematic diagram of the installation positions of the first rack and the second rack of the present invention;

[0024] Figure 3 It is a schematic diagram of the top structure of the fixture assembly of the present invention;

[0025] Figure 4 It is a schematic diagram of the bottom structure of the fixture assembly of the present invention;

[0026] Figure 5 It is a schematic diagram of the internal structure of the suction cup seat of the present invention;

[0027] Figure 6It is a schematic structural diagram of the first rack of the present invention.

[0028] Numbers in the figure: A, fixture assembly; B, injection molding machine; C, belt conveyor; D, XYZ three-axis drive assembly; E, rotation control assembly; F, plugging assembly; 1, fixed plate; 2, rotating shaft; 3, rotating plate; 4, suction cup seat; 5, suction cup; 6, mounting seat; 7, driving motor; 8, connecting arm; 9, L-shaped channel; 10, connecting plate; 11, X-axis linear motor; 12, Y-axis linear motor; 13, Z-axis linear motor; 14, worm gear; 15, worm; 16, first gear; 17, first rack; 18, U-shaped frame; 19, threaded barrel; 20, threaded rod; 21, extrusion rod; 22, sealing plug; 23, connecting shaft; 24, second gear; 25, second rack; 26, slideway; 27, connecting part; 28, chamfer; 29, square mounting part; 30, mounting hole; 31, mounting groove. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0030] Please refer to Figures 1 to 6 , an automated rotating placement fixture, mainly composed of a fixture component A and an XYZ three-axis drive component D, the latter is responsible for driving the fixture component A to shuttle efficiently between the injection molding machine B and the belt conveyor C, the fixture component A includes a fixed plate 1, a rotating shaft 2, a rotating plate 3, a rotation control component E for driving the rotating shaft 2 to rotate, a suction cup seat 4 and a suction cup 5, the fixed plate 1 as the cornerstone of the entire assembly, firmly supports other components. The top of the fixed plate 1 is cleverly installed with a U-shaped mounting seat 6, which not only enhances the stability of the structure, but also provides a solid mounting platform for the drive motor 7. The drive motor 7 is fixed on one side of the mounting seat 6, and its output shaft is closely connected to the XYZ three-axis drive component D through a connecting arm 8, ensuring smooth power transmission, one end of the fixed plate 1 is connected to the rotating shaft 2 by a rotating connection, and the end of the rotating shaft 2 is fixed with a rotating plate 3, so that the rotating plate 3 can be flexibly rotated around the rotating shaft 2. The ends of the rotating plate 3 and the fixed plate 1 are both equipped with suction cup seats 4, and the ends of the suction cup seats 4 are equipped with suction cups 5 for adsorbing the injection molded products. More cleverly, the suction cup seats 4 are provided with an L-shaped channel 9 connected to the suction cups 5. This design enables the suction cups 5 to be quickly isolated from the outside air when needed, forming a vacuum environment and firmly adsorbing the injection molded products.

[0031] In order to realize the blocking and unblocking operation of the L-shaped channel 9, the fixture assembly A is also equipped with a blocking assembly F. The blocking assembly F includes a U-shaped frame 18, a threaded barrel 19, a threaded rod 20, an extrusion rod 21, a sealing plug 22, a connecting shaft 23, a second gear 24 and a second rack 25. The bottom of the rotating plate 3 and the fixed plate 1 are fixedly connected to the U-shaped frame 18, and the threaded barrel 19 is fixedly connected to a side wall of the U-shaped frame 18. The threaded rod 20 is connected to the threaded barrel 19 by threading, and an extrusion rod 21 is fixed at one end thereof, and a conical sealing plug 22 is installed at the end of the extrusion rod 21 to ensure a good sealing effect. A slideway 26 is provided at one end of the threaded rod 20 away from the extrusion rod 21, and the connecting shaft 23 is rotatably connected to the other side wall of the U-shaped frame 18 through a bearing, and a connecting portion 27 slidably connected to the slideway 26 is fixed at one end thereof, and a second gear 24 is fixed at the other end. When the jig assembly A moves to the top of the belt conveyor C, the second gear 24 will mesh with the second rack 25 fixed on the belt conveyor C, thereby driving the threaded rod 20, the extrusion rod 21 and the sealing plug 22 to move, thereby realizing the blocking and unblocking operations of the L-shaped channel 9.

[0032] The XYZ three-axis drive assembly D includes a connecting plate 10, an X-axis linear motor 11, a Y-axis linear motor 12, and a Z-axis linear motor 13. The X-axis linear motor 11 is fixed to the bottom of the connecting plate 10, the Y-axis linear motor 12 is fixed to the output end of the X-axis linear motor 11, and the Z-axis linear motor 13 is fixed to the output end of the Y-axis linear motor 12. The end of the connecting arm 8 is fixedly connected to the output end of the Z-axis linear motor 13, thereby realizing the precise driving of the fixture assembly A in the three directions of XYZ.

[0033] In addition, the fixture assembly A also includes a rotation control assembly E, which is used to drive the rotating plate 3 to rotate relative to the fixed plate 1. The assembly includes a worm wheel 14 fixed to the end of the rotating shaft 2, a worm 15 rotatably connected to the fixed plate 1, a first gear 16 fixed to one end of the worm 15, and a first rack 17 fixed to the belt conveyor C. When the fixture assembly A moves to the top of the belt conveyor C, the first gear 16 will be meshed and connected with the first rack 17, thereby driving the worm 15 and the worm wheel 14 to rotate, causing the rotating plate 3 and the fixed plate 1 to rotate 180 degrees along the rotating shaft 2. This design allows one of the two injection molded products (distributed at an angle of 180 degrees) transferred from the injection molding machine B to be rotated 180 degrees, so that the orientation of each product falling on the belt conveyor C remains consistent.

[0034] The end of the L-shaped channel 9 is provided with a chamfer 28, and the sealing plug 22 is provided in a conical shape, so the sealing effect is better.

[0035] The ends of the first rack 17 and the second rack 25 are each provided with a square mounting portion 29, the width of the square mounting portion 29 is greater than the corresponding width of the first rack 17 and the second rack 25, and the four corners of the square mounting portion 29 are each provided with a mounting hole 30, and the mounting hole 30 is a stepped hole, which is convenient for installing and fixing the first rack 17 and the second rack 25.

[0036] The fixing plate 1 is provided with a mounting groove 31 , and the worm 15 and the worm wheel 14 are both arranged in the mounting groove 31 for easy maintenance.

[0037] The connecting shaft 23 and one end of the L-shaped channel 9 are on the same straight line, so the sealing effect is better.

[0038] The mounting seat 6 is U-shaped, so that the connection arm 8 can be installed more stably.

[0039] Working principle: At the beginning, the jig assembly A is between the injection molding machine B and the belt conveyor C, and the mold of the injection molding machine B is opened. Then, the Y-axis linear motor 12 is used to drive the jig assembly A to move directly above the injection molding machine B. Subsequently, the Z-axis linear motor 13 is used to drive the jig assembly A to descend, and the drive motor 7 is used to drive the fixed plate 1 and the rotating plate 3 to be in a vertical plane. As the jig assembly A continues to descend, when the suction cup 5 is facing the injection molded product, the X-axis linear motor 11 is used to drive the jig assembly A to move, so that the suction cup 5 contacts the injection molded product and the air in the suction cup 5 is emptied. At this time, the injection molded product is sucked by the suction cup, and then the X-axis linear motor 11 is controlled to move in the opposite direction to separate the injection molded product from the mold. Then, the Z-axis linear motor 13 is used to drive the jig assembly A to rise. After rising for a period of time, the drive motor 7 drives the fixed plate 1 and the rotating plate 3 to be in a horizontal plane. Then, the Y-axis linear motor 12 drives the fixture assembly A to move to the top of the belt conveyor C. After the first gear 16 is meshed with the first rack 17, the first gear 16 drives the worm 15 and the worm wheel 14 to rotate, causing the rotating plate 3 and the fixed plate 1 to rotate 180 degrees along the rotating shaft 2, so that the second gear 24 on the rotating plate 3 moves to the top of the second rack 25. As the fixture assembly A continues to descend, the first gear 16 is disengaged from the first rack 17, and the second gear 24 is meshed and connected with the corresponding second rack 25, causing the second gear 24 to rotate with the connecting shaft 23. Due to the relative sliding connection between the connecting shaft 23 and the threaded rod 20, the threaded cylinder 19 The threaded rod 20 is connected to the L-shaped channel 9 by a threaded connection, so the threaded rod 20 will also rotate, and the threaded rod 20 moves toward the connecting shaft 23, so that the L-shaped channel 9 is separated from the sealing plug 22 at the end of the extrusion rod 21. At this time, the L-shaped channel 9 is connected with the external air and the suction cup 5, so that the vacuum environment between the suction cup 5 and the injection molded product is destroyed, the injection molded product is separated from the suction cup 5, and the injection molded product falls onto the conveyor belt on the belt conveyor C under the action of gravity (the spacing is very small, and the injection molded product will not produce excessive displacement), and the jig assembly A is driven to rise by the Z-axis linear motor 13. Subsequently, the sealing plug 22 re-seals the L-shaped channel 9, and the rotating plate 3 is reset relative to the fixed plate 1, and this cycle is repeated.

[0040] It should be emphasized that the injection molding machine generally injects two injection molded products at a time, and the two injection molded products are at a 180-degree angle. During the process of transferring the product from the injection molding machine B to the belt conveyor C, one of the products needs to be rotated 180 degrees.

[0041] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automated rotating placement fixture, characterized in that: The invention comprises a fixture assembly (A) and an XYZ three-axis driving assembly (D) for driving the fixture assembly (A) to reciprocate between an injection molding machine (B) and a belt conveyor (C); the fixture assembly (A) comprises a fixed plate (1), a rotating shaft (2), a rotating plate (3), a rotation control assembly (E) for driving the rotating shaft (2) to rotate, a suction cup seat (4) and a suction cup (5); a mounting seat (6) is fixed on the top of the fixed plate (1); a driving motor (7) is fixed on one side of the mounting seat (6); a connecting arm (8) is fixed to the output shaft of the driving motor (7); The end of the connecting arm (8) is connected to the output end of the XYZ three-axis drive assembly (D); one end of the fixed plate (1) is rotatably connected to a rotating shaft (2); one end of the rotating shaft (2) is fixedly connected to a rotating plate (3); the ends of the rotating plate (3) and the fixed plate (1) are both equipped with a suction cup seat (4); a suction cup (5) is installed at the end of the suction cup seat (4); an L-shaped channel (9) connected to the suction cup (5) is provided in the suction cup seat (4); and the fixture assembly (A) further comprises a blocking assembly (F) for blocking and unblocking the L-shaped channel (9).

2. The automatic rotating placement fixture according to claim 1, characterized in that: The XYZ three-axis drive assembly (D) comprises a connecting plate (10), an X-axis linear motor (11), a Y-axis linear motor (12) and a Z-axis linear motor (13); the X-axis linear motor (11) is fixed to the bottom of the connecting plate (10); the Y-axis linear motor (12) is fixed to the output end of the X-axis linear motor (11); the Z-axis linear motor (13) is fixed to the output end of the Y-axis linear motor (12); and the end of the connecting arm (8) is fixedly connected to the output end of the Z-axis linear motor (13).

3. The automatic rotating placement fixture according to claim 1, characterized in that: The rotation control assembly (E) comprises a worm wheel (14) fixed to the end of the rotating shaft (2), a worm (15) rotatably connected to the fixed plate (1), a first gear (16) fixed to one end of the worm (15), and a first rack (17) fixed to the belt conveyor (C); the first rack (17) is meshedly connected to the first gear (16), and the worm wheel (14) is meshedly connected to the worm (15).

4. The automatic rotating placement fixture according to claim 3, characterized in that: The plugging assembly (F) comprises a U-shaped frame (18), a threaded cylinder (19), a threaded rod (20), an extrusion rod (21), a sealing plug (22), a connecting shaft (23), a second gear (24) and a second rack (25); the bottoms of the rotating plate (3) and the fixed plate (1) are both fixedly connected to the U-shaped frame (18); one side of the U-shaped frame (18) is fixedly connected to the threaded cylinder (19); the threaded cylinder (19) is threadedly connected to the threaded rod (20); one end of the threaded rod (20) is fixedly connected to the extrusion rod (21); ), a sealing plug (22) is fixed at the end of the extrusion rod (21), a slideway (26) is embedded in the end of the threaded rod (20) away from the extrusion rod (21), the other side wall of the U-shaped frame (18) is rotatably connected to a connecting shaft (23) through a bearing, a connecting portion (27) is fixed at one end of the connecting shaft (23), and the connecting portion (27) is slidably connected in the slideway (26), a second gear (24) is fixed at the other end of the connecting shaft (23), and the second rack (25) is fixed on the belt conveyor (C).

5. The automatic rotating placement fixture according to claim 1, characterized in that: The end of the L-shaped channel (9) is provided with a chamfer (28).

6. The automatic rotating placement fixture according to claim 4, characterized in that: The sealing plug (22) is arranged in a conical shape.

7. The automatic rotating placement fixture according to claim 4, characterized in that: The ends of the first rack (17) and the second rack (25) are both provided with a square mounting portion (29), the width of the square mounting portion (29) is greater than the width of the corresponding first rack (17) and the second rack (25), and the four corners of the square mounting portion (29) are each provided with a mounting hole (30), and the mounting hole (30) is a stepped hole.

8. The automatic rotating placement fixture according to claim 3, characterized in that: The fixing plate (1) is provided with a mounting groove (31), and the worm (15) and the worm wheel (14) are both arranged in the mounting groove (31).

9. The automatic rotating placement fixture according to claim 4, characterized in that: The connecting shaft (23) and one end of the L-shaped channel (9) are located on the same straight line.

10. The automatic rotating placement fixture according to claim 1, characterized in that: The mounting seat (6) is arranged in a U shape.

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