A micro-bushing taking and placing device and a taking and placing mechanism thereof

Abstract

This utility model discloses a micro bushing picking and placing device and its picking and placing mechanism, including a driving unit, a first fixed plate, a second fixed plate, a movable plate, a push sleeve, an elastic element, and a picking needle for picking and placing micro bushings. The second fixed plate is disposed between the first fixed plate and the movable plate. The push sleeve passes through the movable plate. The picking needle is assembled on the second fixed plate. The end of the picking needle away from the second fixed plate has two elastically expandable and contractible halves with a relative distance, which can be movably inserted through the push sleeve until they protrude from the end of the push sleeve away from the movable plate. The driving unit drives the connected movable plate to move the movable plate closer to or away from the second fixed plate, so that the halves of the picking needle can extend and retract within the push sleeve, so as to realize the picking needle picking or inserting micro bushings, and can ensure that the micro bushings are not easily dropped and that the position is accurate after being picked up.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and in particular to a device for picking up and placing miniature bushings and its picking and placing mechanism. Background Technology

[0002] Currently, vacuum suction is commonly used to pick up and put down miniature bushings. Because the suction surface of the miniature bushing is very small, the inner diameter of the corresponding vacuum suction hole is also very small, making it difficult to process. In addition, the identification of the vacuum negative pressure is poor and the suction force is also small during the suction process, which can easily cause the miniature bushing to fall off and be misaligned after suction. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a device for picking up and placing miniature bushings, along with its picking and placing mechanism. This device can replace the vacuum suction method and ensures that the miniature bushings are not easily dropped and that their position is accurate after being picked up.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] This utility model provides a micro bushing picking and placing mechanism, including a drive unit, a first fixed plate, a second fixed plate, a movable plate, a push sleeve, an elastic element disposed between the first fixed plate and the second fixed plate, and a picking needle for picking and placing micro bushings; the second fixed plate is disposed between the first fixed plate and the movable plate, and the second fixed plate is movable relative to the first fixed plate, and the movable plate is movable relative to the second fixed plate; the push sleeve passes through the movable plate; the picking needle is assembled on the second fixed plate, and the end of the picking needle away from the second fixed plate has two elastically expandable and contractible halves that are relatively spaced apart, and is movablely inserted through the push sleeve until it protrudes from the end of the push sleeve away from the movable plate; the drive unit drives the movable plate to move the movable plate closer to or away from the second fixed plate, thereby allowing the halves of the picking needle to extend and retract within the push sleeve.

[0006] Furthermore, the feeding needle has an installation part, a feeding part, and a straight rod part connecting the installation part and the feeding part. The installation part is assembled to the second fixing plate. The straight rod part and the feeding part can be movably passed through the push sleeve. The feeding part is provided with a groove through its opposite surface and extending into it at one end away from the straight rod part to form two halves and for taking up the micro bushing.

[0007] Furthermore, the outer end of the half is provided with an inclined guide surface.

[0008] Furthermore, the drive unit includes a motor and a lead screw, the motor being mounted on the second fixed plate; one end of the lead screw is connected to the drive shaft of the motor, and the other end is screwed to the movable plate.

[0009] Furthermore, the elastic element is a resiliently stretchable marble.

[0010] Furthermore, a guide member is provided between the first fixing plate and the second fixing plate, one end of the guide member is fitted to the second fixing plate, and the other end is movably inserted through the first fixing plate.

[0011] Furthermore, the guide component is a height-equalizing screw.

[0012] Furthermore, the movable plate is equipped with guide sleeves for guiding and positioning.

[0013] Furthermore, the number of push sleeves and the number of picking needles is at least one, and the push sleeves correspond one-to-one with the picking needles; the number of elastic elements is at least two.

[0014] This utility model provides a device for picking up and placing miniature bushings, including a robot and the aforementioned picking and placing mechanism for miniature bushings, wherein a first fixing plate of the picking and placing mechanism is assembled on the moving end of the robot.

[0015] The technical solution provided by this utility model has the following beneficial effects:

[0016] The driving unit drives the movable plate to move closer to or further away from the second fixed plate, allowing half of the picking needle to extend and retract within the push sleeve. This enables the picking needle to pick up or implant the micro bushing, ensuring that the micro bushing is not easily dropped and that the position is accurate after picking up the material. Therefore, it can replace the vacuum picking method of the prior art. Attached Figure Description

[0017] Figure 1 The diagram shown is a schematic representation of the micro bushing pick-and-place mechanism in the embodiment.

[0018] Figure 2 The figure shown is a side view of the micro bushing pick-and-place mechanism in the embodiment;

[0019] Figure 3 The figure shown is a cross-sectional view of the first position of the micro bushing pick-and-place mechanism in the embodiment.

[0020] Figure 4 The figure shown is a cross-sectional view of the second position of the micro bushing picking and placing mechanism in the embodiment;

[0021] Figure 5 The diagram shown is a schematic of the feeding needle in the embodiment;

[0022] Figure 6 The diagram shows the operation of the micro bushing pick-and-place device in the embodiment. Detailed Implementation

[0023] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0025] Reference Figures 1 to 6 This utility model provides a device for picking up and placing miniature bushings, including a robot 200 and a picking and placing mechanism for miniature bushings (hereinafter referred to as picking and placing mechanism 100).

[0026] like Figure 1 , Figure 2 and Figure 6 As shown, the pick-and-place mechanism 100 of this embodiment includes a drive unit 1, a first fixed plate 2, a second fixed plate 3, a movable plate 4, multiple push sleeves 5, multiple elastic members 6 disposed between the first fixed plate 2 and the second fixed plate 3, and multiple picking needles 7 for picking and placing micro bushings. The push sleeves 5 correspond one-to-one with the picking needles 7. The movable plate 4 is equipped with multiple guide sleeves 9 for guiding and positioning. The first fixed plate 2 is assembled to the moving end of the robot 200 and forms a rigid connection to cooperate with the pick-and-place mechanism 100 to take out the micro bushing from the bushing positioning carrier 300 and then implant it into the bushing implantation carrier 400.

[0027] The first fixed plate 2, the second fixed plate 3, and the movable plate 4 are arranged vertically, with the second fixed plate 3 positioned between the first fixed plate 2 and the movable plate 4. Multiple guide members 8 are provided between the first fixed plate 2 and the second fixed plate 3. Specifically, the guide members 8 are equal-height screws (i.e., a type of floating connector). The lower end of each guide member 8 is assembled to the second fixed plate 3, and the upper end of each guide member 8 is movably inserted through the first fixed plate 2, so that the second fixed plate 3 is movable relative to the first fixed plate 2 and forms a floating connection with each other.

[0028] like Figure 2 , Figure 3 and Figure 5As shown, each push sleeve 5 is fixed through a through hole in the movable plate 4. Each picking needle 7 has a mounting part 71, a picking part 73, and a straight rod part 72 connecting the mounting part 71 and the picking part 73. The mounting part 71 is fixed to the second fixed plate 3. The straight rod part 72 and the picking part 73 can be movably passed through the push sleeve 5. The lower end of the picking part 73 away from the straight rod part 72 is provided with a groove 732 that penetrates its opposite surface and extends into it, so as to form two elastically expandable and contractible halves 731 that are spaced apart from each other. The two halves 731 can protrude from the lower end of the push sleeve 5 away from the movable plate 4 for picking up the miniature bushing.

[0029] like Figure 4 As shown, the drive unit 1 drives the connected movable plate 4 to move the movable plate 4 closer to or away from the second fixed plate 3, thereby allowing the half 731 of the picking needle 7 to extend and retract within the push sleeve 5.

[0030] In this embodiment, as Figure 4 As shown, the drive unit 1 includes a motor 11 and a lead screw 12. The motor 11 is mounted on the second fixed plate 3, and the upper end of the lead screw 12 is connected to the drive shaft of the motor 11. The lower end of the lead screw 12 is screwed to the movable plate 4. With the cooperation of the motor 11 and the lead screw 12, the movable plate 4 can move away from or near the second fixed plate 3 along the extension direction of the lead screw 12, thereby driving the push sleeve 5 to move back and forth along the extension direction of the picking needle 7. This can be used to push the miniature bushing on the picking needle 7.

[0031] In specific implementation, such as Figure 6 As shown, the bushing positioning carrier 300 includes a first guide post 31 for positioning the guide sleeve 9 and a bushing positioning plate 32 for holding the micro bushing. Additionally, the bushing implantation carrier 400 includes a second guide post 41 for positioning the guide sleeve 9 and a positioning pin 42 for fixing the micro bushing.

[0032] like Figure 3 , Figure 4 and Figure 6 As shown, after each micro bushing is placed into the bushing positioning carrier 300 for positioning, the robot 200 moves the pick-and-place mechanism 100 above the bushing positioning carrier 300. Then, through the joint action of the motor 11 and the lead screw 12, the movable plate 4 is moved upward or retracted, so that the two halves 731 of the picking needle 7 extend out of the push sleeve 5. At the same time, through the mutual positioning between the guide sleeve 9 and the first guide post 31, it is ensured that each picking needle 7 is aligned with the inner hole of each micro bushing on the bushing positioning carrier 300. Then, the robot 200 moves the pick-and-place mechanism 100 downward as a whole until the two halves 731 of each picking needle 7 are inserted into the inner hole of the corresponding micro bushing and the micro bushing is tightened. Then, the robot 200 lifts the pick-and-place mechanism 100 to complete the picking of the micro bushing from the bushing positioning carrier 300.

[0033] Next, the robot 200 drives the pick-and-place mechanism 100, along with the micro bushings, to move above the bushing implantation carrier 400. Then, through the mutual positioning between the guide sleeve 9 and the second guide post 41, it ensures that each pick-up needle 7 is aligned with each positioning needle 42 on the bushing implantation carrier 400. After that, the robot 200 drives the pick-and-place mechanism 100 to move downward until the lower end face of the pick-up needle 7 is close to the top of the positioning needle 42 and then stops moving downward. Then, through the joint cooperation of the motor 11 and the lead screw 12, the movable plate 4 is driven to move downward or extend. At the same time, the push sleeve 5 pushes the micro bushings on the pick-up needle 7 downward until they are pushed into the positioning needles 42 on the bushing implantation carrier 400. At this time, each micro bushing is accurately fitted onto each positioning needle 42 to complete the implantation of the micro bushings into the bushing implantation carrier 400.

[0034] Then, the robot 200 moves the pick-and-place mechanism 100 upward and away from the bushing implantation carrier 400, and finally returns to the top of the bushing positioning carrier 300. By repeating the above steps, each batch of micro bushings can be transferred from the bushing positioning carrier 300 to the bushing implantation carrier 400.

[0035] In summary, by driving the movable plate 4 closer to or further away from the second fixed plate 3 through the drive unit 1, the half 731 of the picking needle 7 can extend and retract within the push sleeve 5, so as to realize the picking needle 7 picking up or implanting the micro bushing, and can ensure that the micro bushing is not easy to fall off and the position is accurate after picking up. Therefore, it can replace the vacuum picking method of the prior art.

[0036] Of course, in other embodiments, the drive unit 1 may also adopt a cylinder structure to drive the movable plate 4 to rise and fall.

[0037] In a further preferred embodiment, each elastic element 6 is a retractable ball, and when the guide sleeve 9 of the pick-and-place mechanism 100 is about to align with each guide post, if the guide sleeve 9 and each guide post are not completely coaxial, but the pick-and-place mechanism 100 is still moving downward, the adaptive elastic deformation of the elastic element 6 will automatically guide each guide post to the correct position. Furthermore, the six-axis adjustment points of the first fixed plate 2 and the second fixed plate 3 are allowed to have a certain deviation, which can reduce the difficulty of adjustment and alignment.

[0038] Of course, in other embodiments, the elastic element 6 can also be a spring structure to reduce the difficulty of debugging and alignment.

[0039] Further preferred, such as Figure 5 As shown, each half 731 has an inclined guide surface 733 at its outward end to facilitate the smooth insertion of the picking needle 7 into the micro bushing.

[0040] In this specific embodiment, the outer diameter of the ends formed by the two halves 731 of the picking needle 7 is machined to be 0.1 mm larger than the inner diameter of the micro bushing. The picking needle 7 is made of a material with a certain elasticity. Therefore, with the cooperation of the groove 732 between the two halves 731, when the two halves 731 are inserted into the inner hole of the micro bushing, they will elastically contract inward under the squeezing force from the bushing positioning carrier 300. Then, without the action of external force, they will automatically open outward and return to the initial state to tighten the micro bushing, thereby achieving stable gripping of the micro bushing.

[0041] This embodiment uses a tensioning method to achieve material picking, which can achieve stable gripping of the micro bushing, and the micro bushing will not wobble after gripping. Its relative position accuracy is also high. At the same time, it ensures quick adjustment and alignment during implantation, and the debugging difficulty is low. It can also improve the overall operational stability.

[0042] In addition, the picking and placing mechanism 100 of this embodiment can be applied to picking up other miniature sleeve parts, as well as to scenarios requiring high-precision implantation, and the floating connection reduces the difficulty of debugging.

[0043] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A mechanism for picking up and placing miniature bushings, characterized in that: It includes a drive unit, a first fixed plate, a second fixed plate, a movable plate, a push sleeve, an elastic element disposed between the first fixed plate and the second fixed plate, and a picking needle for picking up and placing the micro bushing; The second fixed plate is disposed between the first fixed plate and the movable plate, and the second fixed plate is movable relative to the first fixed plate, and the movable plate is movable relative to the second fixed plate; The push sleeve passes through the movable plate; the picking needle is assembled on the second fixed plate, and the end of the picking needle away from the second fixed plate has two elastically expandable and contractible halves with a relative distance, and is movably passed through the push sleeve until it protrudes from the end of the push sleeve away from the movable plate. The drive unit drives the movable plate to move the movable plate closer to or away from the second fixed plate, thereby allowing half of the picking needle to extend and retract within the push sleeve.

2. The micro bushing pick-and-place mechanism according to claim 1, characterized in that: The feeding needle has an installation part, a feeding part, and a straight rod part connecting the installation part and the feeding part. The installation part is assembled to the second fixing plate. The straight rod part and the feeding part can be movably passed through the push sleeve. The feeding part is provided with a groove through its opposite surface and extending into it to form two halves, which are used to pick up the micro bushing.

3. The micro bushing pick-and-place mechanism according to claim 2, characterized in that: An inclined guide surface is provided at the outward end of the half.

4. The micro bushing pick-and-place mechanism according to claim 1, characterized in that: The drive unit includes a motor and a lead screw. The motor is mounted on the second fixed plate. One end of the lead screw is connected to the drive shaft of the motor, and the other end is screwed to the movable plate.

5. The micro bushing pick-and-place mechanism according to any one of claims 1-4, characterized in that: The elastic element is a ball that can stretch and retract elastically.

6. The micro bushing pick-and-place mechanism according to claim 5, characterized in that: A guide is provided between the first fixing plate and the second fixing plate. One end of the guide is fitted to the second fixing plate, and the other end is movably inserted through the first fixing plate.

7. The micro bushing pick-and-place mechanism according to claim 6, characterized in that: The guide component is a height-equalizing screw.

8. The micro bushing pick-and-place mechanism according to any one of claims 1-4, characterized in that: The movable plate is equipped with guide sleeves for guiding and positioning.

9. The micro bushing pick-and-place mechanism according to any one of claims 1-4, characterized in that: The number of push sleeves and the number of picking needles is at least one, and the push sleeves correspond one-to-one with the picking needles; the number of elastic elements is at least two.

10. A device for picking up and placing miniature bushings, characterized in that: The invention includes a robot and a pick-and-place mechanism for the micro bushing as described in any one of claims 1-9, wherein a first fixing plate of the pick-and-place mechanism is mounted on the moving end of the robot.

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