Center clamping flap mechanism

Abstract

The utility model provides a kind of centering clamping flap mechanism, including mounting plate, gas sliding ring, first clamping mechanism and second clamping mechanism, the gas sliding ring, first clamping mechanism and second clamping mechanism are respectively installed on the mounting plate, the first clamping mechanism and second clamping mechanism are symmetrical, the first clamping mechanism includes first drive cylinder, first drive rack, first gear, first driven rack and first clamping plate.The utility model has the beneficial effects of providing a kind of centering clamping flap mechanism, can realize double-sided continuous pasting, and, work height does not change after turning over.

Description

Technical Field

[0001] This utility model relates to a flipping mechanism, and more particularly to a centering and clamping flipping mechanism. Background Technology

[0002] SMT technology is a key process in the electronics assembly industry. Its main principle is to accurately mount electronic components onto a PCB board using equipment such as a pick-and-place machine to achieve circuit connection and function.

[0003] As electronic products become increasingly smaller, more complex, and higher-performance, higher demands are placed on the mounting accuracy and efficiency of SMT production lines.

[0004] Existing SMT production line PCB placement equipment can only perform single-sided placement and cannot achieve continuous double-sided placement (side A must be manually intervened or otherwise operated before side B can be placed). Furthermore, when flipping over to place side B, the working height changes, causing blurring of the industrial camera image, which seriously affects placement accuracy and stability.

[0005] Therefore, how to provide a centering clamping flipping mechanism that can achieve continuous double-sided mounting and whose working height does not change after flipping is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In order to solve the problems in the prior art, this utility model provides a centering clamping flip plate mechanism.

[0007] This utility model provides a centering clamping flip plate mechanism, including a mounting plate, a slip ring, a first clamping mechanism, and a second clamping mechanism. The slip ring, the first clamping mechanism, and the second clamping mechanism are respectively mounted on the mounting plate. The first clamping mechanism and the second clamping mechanism are symmetrical. The first clamping mechanism includes a first driving cylinder, a first driving rack, a first gear, a first driven rack, and a first clamping plate. The slip ring is connected to the first driving cylinder, and the first driving cylinder is connected to the first driving rack. The two sides of the first gear mesh with the first driving rack and the first driven rack, respectively. The first driving rack and the first driven rack are symmetrical. The second clamping mechanism... The system includes a second drive cylinder, a second drive rack, a second gear, a second driven rack, and a second clamping plate. The air slip ring is connected to the second drive cylinder, and the second drive cylinder is connected to the second drive rack. The two sides of the second gear mesh with the second drive rack and the second driven rack, respectively. The second drive rack and the second driven rack are symmetrical. The first driven rack and the second driven rack are respectively connected to the first clamping plate, and the first drive rack and the second drive rack are respectively connected to the second clamping plate. The compressed air required for the first drive cylinder and the second drive cylinder to drive is provided by the air slip ring. The inner ring of the air slip ring is fixed, and the outer ring of the air slip ring rotates to ensure that the air pipe does not get tangled during continuous rotation.

[0008] As a further improvement of this utility model, the air slip ring includes a rotating shaft, an inner air slip ring, and an outer air slip ring. The inner air slip ring is rotatably connected to the rotating shaft. The inner and outer air slip rings are concentric circles. A first annular air passage and a second annular air passage are provided between the inner and outer air slip rings. The first annular air passage is connected to the air inlet of the first driving cylinder and the second driving cylinder, respectively. The second annular air passage is connected to the air outlet of the first driving cylinder and the second driving cylinder, respectively.

[0009] As a further improvement of this utility model, the inner ring of the air slip ring is provided with a first air inlet and a second air inlet, the first air inlet being connected to the first annular air passage, and the second air inlet being connected to the second annular air passage.

[0010] As a further improvement of this utility model, a rotating sealing ring is clamped between the inner ring and the outer ring of the air slip ring, the first annular air passage is located between the two rotating sealing rings, and the second annular air passage is located between the two rotating sealing rings.

[0011] As a further improvement of this utility model, the rotating shaft is rotatably connected to the inner ring of the air slip ring via a bearing.

[0012] As a further improvement of this utility model, the rotating shaft and the outer ring of the air slip ring are respectively fixedly connected to the mounting plate.

[0013] As a further improvement of this utility model, the first driving rack, the first driven rack, the second driving rack, and the second driven rack are respectively connected to the mounting plate via linear guide rails.

[0014] As a further improvement of this utility model, the first driving rack and the second driving rack move in the same direction, and the first driven rack and the second driven rack move in the same direction.

[0015] The beneficial effects of this utility model are: it provides a centering clamping flipping mechanism that can achieve continuous double-sided mounting, and the working height does not change after flipping. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other solutions can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the back of a centering clamping flip-plate mechanism according to the present invention;

[0018] Figure 2 This is a front view of a centering clamping flip plate mechanism of this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of a centering clamping flip plate mechanism according to the present invention;

[0020] Figure 4 This is a partially enlarged schematic diagram of a centering clamping flip plate mechanism according to this utility model;

[0021] Figure 5 This is a cross-sectional schematic diagram of the air slip ring of the centering clamping flip plate mechanism of this utility model;

[0022] Figure 6 This is an exploded view of the air slip ring of a centering clamping flip plate mechanism according to this utility model. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1 to 6 As shown. A centering clamping flip-plate mechanism includes a mounting plate 4, a slip ring 3, a first clamping mechanism 1, and a second clamping mechanism 2.

[0028] The air slip ring 3, the first clamping mechanism 1, and the second clamping mechanism 2 are respectively installed on the mounting plate 4.

[0029] The first clamping mechanism 1 and the second clamping mechanism 2 are symmetrical.

[0030] The first clamping mechanism 1 includes a first driving cylinder 11, a first driving rack 12, a first gear 13, a first driven rack 14, and a first clamping plate 15. The air slip ring 3 is connected to the first driving cylinder 11, and the first driving cylinder 11 is connected to the first driving rack 12. The two sides of the first gear 13 are respectively engaged with the first driving rack 12 and the first driven rack 14. The first driving rack 12 and the first driven rack 14 are symmetrical. Under the action of the first gear 13, the first driving rack 12 and the first driven rack 14 move synchronously in opposite directions.

[0031] The second clamping mechanism 2 includes a second driving cylinder 21, a second driving rack 22, a second gear 23, a second driven rack 24, and a second clamping plate 25. The air slip ring 3 is connected to the second driving cylinder 21, and the second driving cylinder 21 is connected to the second driving rack 22. The two sides of the second gear 23 are respectively engaged with the second driving rack 22 and the second driven rack 24. The second driving rack 22 and the second driven rack 24 are symmetrical. Under the action of the second gear 23, the second driving rack 22 and the second driven rack 24 move synchronously in opposite directions.

[0032] Using a slip ring 3 to supply air to the first drive cylinder 11 and the second drive cylinder 21 can prevent the air pipe from getting tangled when the centering clamping flip plate mechanism rotates.

[0033] The first driven rack 14 and the second driven rack 24 are respectively connected to the first clamping plate 15, that is, the first driven rack 14 and the second driven rack 24 together drive the first clamping plate 15 to move. The first driving rack 12 and the second driving rack 22 are respectively connected to the second clamping plate 25, that is, the first driving rack 12 and the second driving rack 22 together drive the second clamping plate 25 to move.

[0034] Driven by the air slip ring 3, the piston rods of the first drive cylinder 11 and the second drive cylinder 21 extend and push the first drive rack 12 and the second drive rack 22 to move, thereby driving the first gear 13 and the second gear 23 to rotate. The rotation of the first gear 13 and the second gear 23 drives the first driven rack 14 and the second driven rack 24 to move in the opposite direction (opposite to the direction of the first drive rack 12 and the second drive rack 22), thereby causing the second clamping plate 25 and the first clamping plate 15 connected to the first drive rack 12, the second drive rack 22 and the first driven rack 14 and the second driven rack 24 to move synchronously towards each other (clamping) or in the opposite direction (releasing).

[0035] The first drive cylinder 11, the first drive rack 12, the first gear 13, the first driven rack 14, the second drive cylinder 21, the second drive rack 22, the second gear 23, and the second driven rack 24 are mounted on the back of the mounting plate 4, and the first clamping plate 15 and the second clamping plate 25 are mounted on the front of the mounting plate 4.

[0036] Considering that the first driven rack 14, the second driven rack 24 and the first clamping plate 15 are respectively installed on the front and back sides of the mounting plate 4, the connection between the first driven rack 14, the second driven rack 24 and the first clamping plate 15 can be achieved by an L-shaped structure, and the connection of the second clamping plate 25 can also be achieved in the same way.

[0037] The air slip ring 3 includes a rotating shaft 31, an inner air slip ring 32, and an outer air slip ring 33. The inner air slip ring 32 is rotatably connected to the rotating shaft 31. The inner air slip ring 32 and the outer air slip ring 33 are concentric circles. A first annular air passage 34 and a second annular air passage 35 are provided between the inner air slip ring 32 and the outer air slip ring 33. The first annular air passage 34 is connected to the air inlet of the first driving cylinder 11 and the second driving cylinder 21, respectively. The second annular air passage 35 is connected to the air outlet of the first driving cylinder 11 and the second driving cylinder 21, respectively. The first annular air passage 34 is connected to the air inlet of both the first driving cylinder 11 and the second driving cylinder 21, and the second annular air passage 35 is connected to the air outlet of both the first driving cylinder 11 and the second driving cylinder 21, thus ensuring that the first driving cylinder 11 and the second driving cylinder 21 extend and retract simultaneously, ensuring synchronicity.

[0038] The compressed air required for the first drive cylinder 11 and the second drive cylinder 21 is provided by the air slip ring 3. The inner ring 32 of the air slip ring is fixed, and the outer ring 33 of the air slip ring rotates to ensure that the air pipe does not get tangled during continuous rotation.

[0039] The inner ring 32 of the air slip ring is provided with a first air inlet 311 and a second air inlet 312. The first air inlet 311 is connected to the first annular air passage 34, and the second air inlet 312 is connected to the second annular air passage 35. The inner ring 32 of the air slip ring is fixed, and air is introduced and discharged from the outside. Then, the compressed air is connected to the two cylinders (i.e., the first drive cylinder 11 and the second drive cylinder 21) through the first annular air passage 34 and the second annular air passage 35 of the inner ring 32 of the air slip ring. The rotating shaft 31 rotates together with the outer ring 33 of the air slip ring.

[0040] A rotating sealing ring 36 is clamped between the inner ring 32 and the outer ring 33 of the slip ring. The first annular air passage 34 is located between the two rotating sealing rings 36, and the second annular air passage 35 is located between the two rotating sealing rings 36. Therefore, three rotating sealing rings 36 can be arranged between the inner ring 32 and the outer ring 33 of the slip ring to achieve the sealing of the first annular air passage 34 and the second annular air passage 35.

[0041] Air is introduced through the first air inlet 311 and the second air inlet 312. O-ring seals are used at the air inlets to ensure no leakage. Three rotating sealing rings 36 are distributed within the inner ring 32 of the slip ring. Annular grooves between the rotating sealing rings 36 form a first annular air passage 34 and a second annular air passage 35. Compressed air entering through the first air inlet 311 and the second air inlet 312 flows into the first annular air passage 34 and the second annular air passage 35, and then through to the connector. The connector then connects to the first drive cylinder 11 and the second drive cylinder 21. This structure is more compact, with an overall width of 16.5mm, and is compatible with mainstream dual-rail placement machines on the market.

[0042] The rotating shaft 31 and the outer ring 33 of the air slip ring are fixedly connected to the mounting plate 4, which can keep the rotating shaft 31, the outer ring 33 of the air slip ring, and the mounting plate 4 rotating synchronously. The inner ring 32 of the air slip ring is fixed, and the rotating shaft 31 rotates together with the outer ring 33 of the air slip ring. The centering clamping flipping mechanism rotates synchronously as a whole, which can realize the flipping of the PCB, thereby realizing double-sided continuous mounting. The inner ring 32 of the air slip ring can be fixed on the frame of the equipment (not shown in the figure). Except for the inner ring 32 of the air slip ring, which is fixed, the rotating shaft 31, the outer ring 33 of the air slip ring, and the centering clamping flipping mechanism are flipped as a whole.

[0043] The first driving rack 12, the first driven rack 14, the second driving rack 22, and the second driven rack 24 are respectively connected to the mounting plate 4 via linear guide rails 5, which can realize the smooth movement of the first driving rack 12, the first driven rack 14, the second driving rack 22, and the second driven rack 24. The linear guide rails 5 are used for guidance to ensure smooth movement without shaking.

[0044] The first drive rack 12 and the second drive rack 22 move in the same direction, and the first driven rack 14 and the second driven rack 24 move in the same direction.

[0045] The working principle of the centering clamping flip-plate mechanism provided by this utility model is as follows:

[0046] When the PCB is released, the air slip ring 3 supplies air to the first drive cylinder 11 and the second drive cylinder 21 respectively. The first drive cylinder 11 and the second drive cylinder 21 drive the first drive rack 12 and the second drive rack 22 to move upward, which in turn drives the second clamping plate 25 to move upward. The first drive rack 12 and the second drive rack 22 drive the first driven rack 14 and the second driven rack 24 to move downward through the first gear 13 and the second gear 23 respectively, which in turn drives the first clamping plate 15 to move downward, thereby realizing the opening of the first clamping plate 15 and the second clamping plate 25.

[0047] The PCB is clamped. The air slip ring 3 supplies air to the first drive cylinder 11 and the second drive cylinder 21 respectively. The first drive cylinder 11 and the second drive cylinder 21 drive the first drive rack 12 and the second drive rack 22 downward, which in turn drives the second clamping plate 25 downward. The first drive rack 12 and the second drive rack 22 drive the first driven rack 14 and the second driven rack 24 upward through the first gear 13 and the second gear 23 respectively, which in turn drives the first clamping plate 15 upward, thereby achieving the clamping of the first clamping plate 15 and the second clamping plate 25.

[0048] This utility model provides a centering clamping flipping mechanism, which adopts a symmetrical design (the first clamping mechanism 1 and the second clamping mechanism 2 have the same structure and symmetrical movement), with the clamping points located symmetrically on both sides of the PCB centerline. After clamping, the PCB is fixed on the same working height plane set by the mechanism. Regardless of whether the mechanism flips or not, as long as the clamping state is maintained, the height position of the PCB relative to the placement head / camera is exactly the same on both side A and side B.

[0049] This utility model provides a centering clamping flip plate mechanism that can be applied to SMT production lines. It has strong placement capability, is compatible with double-sided placement, and the clamping mechanism centers and clamps, ensuring that the working height of both sides is consistent, thus guaranteeing placement stability and accuracy. It has a compact structure, adopts a self-made air slip ring, has a small space, and is compatible with the dual-track width of pick and place machines such as Fuji and Panasonic, demonstrating strong compatibility.

[0050] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A centering clamping flip-plate mechanism, characterized in that: The system includes a mounting plate, a slip ring, a first clamping mechanism, and a second clamping mechanism. The slip ring, the first clamping mechanism, and the second clamping mechanism are respectively mounted on the mounting plate. The first clamping mechanism and the second clamping mechanism are symmetrical. The first clamping mechanism includes a first driving cylinder, a first driving rack, a first gear, a first driven rack, and a first clamping plate. The slip ring is connected to the first driving cylinder, and the first driving cylinder is connected to the first driving rack. The two sides of the first gear mesh with the first driving rack and the first driven rack, respectively. The first driven rack is symmetrical, and the second clamping mechanism includes a second driving cylinder, a second driving rack, a second gear, a second driven rack, and a second clamping plate. The air slip ring is connected to the second driving cylinder, and the second driving cylinder is connected to the second driving rack. The two sides of the second gear mesh with the second driving rack and the second driven rack, respectively. The second driving rack and the second driven rack are symmetrical. The first driven rack and the second driven rack are respectively connected to the first clamping plate, and the first driving rack and the second driving rack are respectively connected to the second clamping plate.

2. The centering clamping flipping mechanism according to claim 1, characterized in that: The air slip ring includes a rotating shaft, an inner air slip ring, and an outer air slip ring. The inner air slip ring is rotatably connected to the rotating shaft. The inner and outer air slip rings are concentric circles. A first annular air passage and a second annular air passage are provided between the inner and outer air slip rings. The first annular air passage is connected to the air inlet of the first driving cylinder and the second driving cylinder, respectively. The second annular air passage is connected to the air outlet of the first driving cylinder and the second driving cylinder, respectively.

3. The centering clamping flipping mechanism according to claim 2, characterized in that: The inner ring of the air slip ring is provided with a first air inlet and a second air inlet. The first air inlet is connected to the first annular air passage, and the second air inlet is connected to the second annular air passage.

4. The centering clamping flipping mechanism according to claim 2, characterized in that: A rotating sealing ring is clamped between the inner ring and the outer ring of the slip ring. The first annular air passage is located between the two rotating sealing rings, and the second annular air passage is located between the two rotating sealing rings.

5. The centering clamping flipping mechanism according to claim 2, characterized in that: The rotating shaft is rotatably connected to the inner ring of the air slip ring via a bearing.

6. The centering clamping flipping mechanism according to claim 2, characterized in that: The rotating shaft and the outer ring of the air slip ring are respectively fixedly connected to the mounting plate.

7. The centering clamping flipping mechanism according to claim 1, characterized in that: The first driving rack, the first driven rack, the second driving rack, and the second driven rack are respectively connected to the mounting plate via linear guide rails.

8. The centering clamping flipping mechanism according to claim 1, characterized in that: The first driving rack and the second driving rack move in the same direction, and the first driven rack and the second driven rack move in the same direction.

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