Bearing device and motion platform

Abstract

The utility model discloses a bearing device and a motion platform, and the device comprises a pedestal which comprises a carrying platform used for bearing a lead frame / strip; the pressing plate assemblies are rotationally connected with the base, the number of the pressing plate assemblies is two, and the pressing plate assemblies are oppositely arranged; the transmission assembly is movably arranged on the base and is in transmission connection with the two pressing plate assemblies; the driving part is arranged on the base and can drive the transmission assembly to move; and the transmission assembly is suitable for driving the two groups of pressing plate assemblies to synchronously turn to the table surface of the carrying table under the driving of the driving piece so as to abut against the edge of the lead frame / strip, or synchronously turn away from the table surface of the carrying table so as to loosen the lead frame / strip. By adopting the structure, the structure is simple, the cost is low, and the lead frame / strip can be anchored on the carrying table.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of semiconductor packaging, in particular to a bearing device and motion platform. BACKGROUND

[0002] In the Back-End process, after the die is attached and / or bonded to the lead frame / strip to be molded into a chip, or the chip needs to be marked with a marking tool, the existing marking machine is usually provided with a bearing device with a vacuum adsorption structure to position the lead frame / strip. However, such a bearing device not only has many internal pipelines and a complex overall structure, but also has the risk of affecting the marking precision due to displacement and deformation of the lead frame / strip caused by unstable adsorption.

[0003] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. INVENTION CONTENTS

[0004] The utility model aims at providing a bearing device and motion platform to simplify the structure of the bearing device, improve the firmness of the lead frame / strip after being anchored to the bearing device, and prevent the displacement and deformation of the lead frame / strip from affecting the marking precision.

[0005] The utility model aims to realize the following technical scheme: a bearing device, comprising:

[0006] A base including a loading platform for loading the lead frame / strip;

[0007] A pressing plate assembly rotatably connected to the base, the number of the pressing plate assembly is two groups, and the two groups are oppositely arranged;

[0008] A transmission assembly movably arranged on the base and transmissionally connected to the two pressing plate assemblies;

[0009] A driving member arranged on the base and capable of driving the transmission assembly to move;

[0010] The transmission assembly is adapted to drive the two groups of pressing plate assemblies to synchronously rotate towards the table surface of the loading platform to tightly press the edges of the lead frame / strip, or synchronously rotate away from the table surface of the loading platform to release the lead frame / strip under the driving of the driving member.

[0011] Further, the transmission assembly comprises:

[0012] A transmission plate movably connected to the base, and a transmission part is recessed on the transmission plate;

[0013] a transmission member, two in number, and fixedly connected with the two pressing plate assemblies respectively;

[0014] a follower, two in number, and movably accommodated in the transmission part respectively on different transmission members;

[0015] The transmission plate is in transmission connection with the driving member, and the transmission plate is adapted to drive the two sets of pressing plate assemblies to turn towards or away from the table top synchronously under the driving of the driving member.

[0016] Further, the transmission plate is slidably connected with the base in the vertical direction, the rotation axis of the pressing plate assembly is parallel to the first horizontal direction, the transmission part is a long strip structure with the length direction parallel to the second horizontal direction, the first horizontal direction and the second horizontal direction are perpendicular to each other, and the follower is movable along the length direction of the transmission part.

[0017] Further, the length direction of the table is parallel to the first horizontal direction, and the width direction is parallel to the second horizontal direction, the pressing plate assemblies are oppositely arranged in the second horizontal direction, and press the two long side edges of the lead frame / strip respectively.

[0018] Further, the pressing plate assembly comprises:

[0019] a rotation shaft, two in number, and rotatably arranged on both sides of the base in the first horizontal direction, the two rotation shafts are coaxial and the axis direction is parallel to the first horizontal direction;

[0020] a turnover member, two ends of which are fixedly connected with different rotation shafts respectively;

[0021] a pressing plate, fixedly connected with the turnover member;

[0022] The transmission assembly is located on one side of the base in the first horizontal direction, and the transmission member is fixedly connected with the adjacent rotation shaft.

[0023] Further, the pressing plate extends to both sides of the table in the first horizontal direction.

[0024] Further, the base comprises:

[0025] a bottom plate, on which the table is detachably fixed;

[0026] a mounting block, arranged on the bottom plate, two in number and oppositely arranged in the second horizontal direction, the table is located between the two mounting blocks, the pressing plate assembly corresponds to the mounting block one by one, and is rotatably connected with different mounting blocks respectively;

[0027] The mounting block is adjustable in position along a second horizontal direction.

[0028] Further, the base further comprises a plurality of positioning pins for positioning the lead frame / strip, the positioning pins being fixedly connected with the carrier and / or the mounting block and protruding relative to the table top of the carrier, the positioning pins being distributed on both sides of the carrier in the length direction and the width direction to surround the outer periphery of the lead frame / strip.

[0029] The utility model provides a motion platform, include:

[0030] The carrier is transmissionally connected with the transfer module.

[0031] The carrier is transmissionally connected with the transfer module.

[0032] The carrier is the carrier as described above.

[0033] Further, the transfer module has two output ends, the motion platform further comprises two lifting modules respectively connected with different output ends of the transfer module, the carrier corresponds to the lifting module one by one and is arranged on different lifting modules, and the two carriers are adapted to be staggered in the transfer direction of the transfer module under the driving of the lifting module.

[0034] Compared with the prior art, the utility model has the beneficial effects that:

[0035] 1. By setting the pressing plate assembly rotationally connected with the base, the driving part is adapted to drive the pressing plate assembly to rotate to the table top of the carrier to tightly press the edge of the lead frame / strip, so that the lead frame / strip can be anchored on the carrier, displacement and deformation are prevented, and the printing precision is ensured.

[0036] The carrier does not need to be provided with a vacuum pipeline, and the structure is simple.

[0037] 2. The number of pressing plate assemblies is two, and the pressing plate assemblies are arranged oppositely, the transmission assembly is connected between the driving part and the pressing plate assemblies, and is adapted to drive the two pressing plate assemblies to rotate synchronously under the driving of the driving part, so that the edges of the lead frame / strip on both sides can be effectively tightly pressed, and the firmness of the lead frame / strip anchored on the carrier is further improved.

[0038] In this way, a single driving part can drive the two pressing plate assemblies to rotate synchronously, and the cost of the carrier is reduced. ACCURACY

[0039] Figure 1 Is the structure schematic view when the carrier of the utility model compresses the lead frame / strip.

[0040] Figure 2 Is the structure schematic view when the carrier of the utility model is in the loosening state.

[0041] Figure 3 is a disassembled structural schematic diagram of the pressure plate assembly in the utility model. Figure 1

[0042] Figure 4 is a disassembled structural schematic diagram of the base after removing the loading platform in the utility model.

[0043] Figure 5 is a structural schematic diagram of the base after removing the loading platform in the utility model.

[0044] Figure 6 is a structural schematic diagram of the motion platform in the utility model.

[0045] Mark explanation:

[0046] 100, bearing device; 110, base; 111, loading platform; 112, bottom plate; 1121, adjusting groove; 1122, first bar hole; 1123, second bar hole; 113, mounting block; 114, adjusting nut; 115, positioning pin; 120, transmission assembly; 121, transmission plate; 1211, transmission part; 122, transmission member; 123, follower; 124, slide rail assembly; 130, pressure plate assembly; 131, rotating shaft; 132, turnover piece; 1321, lug; 133, pressure plate; 1331, avoiding part; 140, driving member; 200, lead frame / strip; 300, moving and loading module; 400, lifting module. Specific implementation

[0047] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below in combination with the drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, not all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0048] The terms "include" and "have" and any variations thereof in the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but optionally includes other steps or units not listed, or optionally includes other steps or units inherent to the process, method, product or device.

[0049] ​Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combinable with other embodiments.

[0050] Referring to Figures 1 to 3 As shown in the drawings, the bearing device 100 corresponding to a preferred embodiment of the utility model, including: base 110, including for bearing lead frame / strip 200 loading table 111;Platen assembly 130, with base 110 rotationally connected, platen assembly 130 quantity is two groups, and relative arrangement;Transmission assembly 120, movably arranged on base 110, and with two platen assembly 130 transmission connection;Driving member 140, set up on base 110, and can drive transmission assembly 120 activity;Wherein, transmission assembly 120 is adapted to drive two platen assembly 130 under the drive of driving member 140 synchronous steering loading table 111 the mesa, to resist the edge of lead frame / strip 200, or synchronous rotation off loading table 111 mesa, to loosen lead frame / strip 200.

[0051] The utility model discloses a setting and base 110 rotationally connected platen assembly 130, driving member 140 is adapted to drive platen assembly 130 steering loading table 111 mesa, to resist the edge of lead frame / strip 200, make lead frame / strip 200 can anchor on loading table 111, prevent its displacement, deformation, ensure the precision of engraving, so need not set up vacuum pipeline, and the structure is simple;In addition, platen assembly 130 quantity is two groups, and relative arrangement, transmission assembly 120 is accepted between driving member 140 and platen assembly 130, and is adapted to drive two platen assembly 130 synchronous rotation under the drive of driving member 140, make the both sides edge of lead frame / strip 200 can be effectively resisted tightly, to further improve the firmness of lead frame / strip 200 anchor after loading table 111, so single driving member 140 can realize two platen assembly 130 synchronous rotation, reduce the cost of bearing device 100.

[0052] Further, transmission assembly 120 includes transmission plate 121, transmission member 122 and follower 123.Transmission plate 121 is movably connected with base 110, and recessed with transmission part 1211.Transmission member 122 is a block substantially in the shape of L, platen assembly 130 is fixedly connected with one end of transmission member 122, and follower 123 is movably received in transmission part 1211.Further, follower 123 can be a cam bearing follower.

[0053] In the present embodiment, since there are two sets of the pressing plate assemblies 130, correspondingly, there are also two transmission members 122 to be fixedly connected with the different pressing plate assemblies 130 respectively, and there are also two followers 123 which are arranged on the different transmission members 122 respectively. In an embodiment, there can be only one transmission part 1211, and both of the followers 123 are accommodated in the transmission part 1211. In other embodiments, there can be two transmission parts 1211 to accommodate the different followers 123 respectively.

[0054] Further, the transmission assembly 120 further comprises a slide rail assembly 124 arranged between the transmission plate 121 and the base 110, the slide rail assembly 124 is arranged along the vertical direction, so that the transmission plate 121 can slide relative to the base 110 along the vertical direction. The driving member 140 is a linear driving structure arranged along the vertical direction, to drive the transmission plate 121 to slide along the vertical direction. The driving member 140 can be a linear air cylinder or a linear motor, and in the present embodiment, a linear air cylinder is preferred to simplify the structure and reduce the cost.

[0055] The rotation axes of the two pressing plate assemblies 130 are parallel to the first horizontal direction, and are arranged opposite to each other along the second horizontal direction, and the first horizontal direction and the second horizontal direction are perpendicular to each other. When the number of the transmission parts 1211 is two, the two transmission parts 1211 are arranged along the second horizontal direction to be in transmission connection with the different pressing plate assemblies 130 respectively. The transmission part 1211 is recessed inward from the side surface of the transmission plate 121 along the first horizontal direction, and the transmission part 1211 is a slot or a hole in a long strip shape, and the length direction of the transmission part 1211 is parallel to the second horizontal direction.

[0056] The follower 123 slides along the length direction of the transmission part 1211 in response to the vertical sliding of the transmission plate 121, to guide the transmission member 122 to be reliably flipped, so as to drive the pressing plate assembly 130 to be flipped synchronously. When the transmission plate 121 slides downward, the transmission member 122 can drive the pressing plate assembly 130 to be flipped to the table top of the loading table 111 under the pushing of the transmission part 1211; when the transmission plate 121 slides upward, the transmission member 122 can drive the pressing plate assembly 130 to be flipped away from the table top of the loading table 111 under the pushing of the transmission part 1211.

[0057] In the present embodiment, the length direction of the loading table 111 is parallel to the first horizontal direction, and the width direction of the loading table 111 is parallel to the second horizontal direction, i.e., the two pressing plate assemblies 130 are arranged on the two sides of the loading table 111 along the width direction, to press the two long sides of the lead frame / strip 200 respectively, so as to improve the pressing effect.

[0058] Further, referring to Figure 3 and Figure 4As shown, the pressing plate assembly 130 comprises a rotating shaft 131, a turnover piece 132 and a pressing plate 133. The rotating shaft 131 is two in number and is rotatably arranged on both sides of the base 110 in the first horizontal direction, and the two rotating shafts 131 are coaxial and the axis direction is parallel to the first horizontal direction. The turnover piece 132 is a long strip structure, both ends of which are provided with lugs 1321, and the lugs 1321 are fixedly sleeved on different rotating shafts 131. The pressing plate 133 is fixedly connected with the turnover piece 132. The transmission assembly 120 is located on one side of the base 110 in the first horizontal direction, and the transmission piece 122 and the rotating shaft 131 adjacent thereto are fixedly connected. Preferably, the pressing plate 133 extends to both sides of the carrier 111 in the first horizontal direction, so that the whole long side of the lead frame / strip 200 is effectively pressed, further improving the pressing effect.

[0059] Further, referring to Figure 3 and Figure 5 As shown, the base 110 comprises a bottom plate 112 and a mounting block 113, and the carrier 111 and the mounting block 113 are fixed on the bottom plate 112. The mounting block 113 is two in number and is arranged opposite in the second horizontal direction, and the carrier 111 is located between the two mounting blocks 113. The pressing plate assembly 130 corresponds to the mounting block 113 one by one, and the two pressing plate assemblies 130 are respectively rotatably connected to different mounting blocks 113.

[0060] Preferably, the carrier 111 and the bottom plate 112 are detachably connected, and the mounting block 113 can be adjusted in position along the second horizontal direction. When it is necessary to carry lead frames / strip 200 of different sizes, only the corresponding carrier 111 needs to be replaced, and the positions of the two mounting blocks 113 in the second horizontal direction are adjusted adaptively, so that the positions of the pressing plate assemblies 130 can be adjusted, so that they can always reliably press the lead frame / strip 200.

[0061] Specifically, taking one of the mounting blocks 113 as an example, the bottom plate 112 is inwardly recessed at at least one side in the first horizontal direction to form an adjusting groove 1121, which is long strip-shaped and has a length direction parallel to the second horizontal direction. The top surface of the bottom plate 112 is inwardly recessed to form a first strip-shaped hole 1122 extending to the adjusting groove 1121, and the length direction of the first strip-shaped hole 1122 is parallel to the second horizontal direction. An adjusting nut 114 is arranged in the adjusting groove 1121, and the width dimension of the adjusting nut 114 in the first horizontal direction is greater than the width dimension of the first strip-shaped hole 1122. The adjusting nut 114 is loaded into the adjusting groove 1121 from the slot of the adjusting groove 1121 and can slide along the second horizontal direction. A threaded member (not shown in the figure) is threadedly connected to the adjusting nut 114, and the threaded member is threadedly connected to the mounting block 113 through the first strip-shaped hole 1122. By tightening the threaded member, the adjusting nut 114 can be tightly abutted against the inner wall of the adjusting groove 1121 to achieve fastening of the mounting block 113, and by loosening the threaded member, the mounting block 113 can be moved along the second horizontal direction under the guidance of the adjusting nut 114.

[0062] Preferably, the bottom surface of the bottom plate 112 is inwardly recessed to form a second strip-shaped hole 1123 extending to the adjusting groove 1121, the length direction of the second strip-shaped hole 1123 is also parallel to the second horizontal direction, and the width dimension of the second strip-shaped hole 1123 in the first horizontal direction is smaller than the width dimension of the adjusting nut 114. An operator can rotate the threaded member through the second strip-shaped hole 1123 to improve the convenience of disassembly and adjustment.

[0063] Preferably, in the present embodiment, the bottom plate 112 is provided with the adjusting groove 1121 at both sides in the first horizontal direction, and the above-mentioned strip-shaped hole, adjusting nut 114, threaded member and adjusting groove 1121 correspond one by one, so that the mounting block 113 can be effectively adjusted and fixed at both sides in the first horizontal direction, improving the reliability of adjustment and fixation. In addition, the mounting block 113 can extend to both sides of the bottom plate 112 in the first horizontal direction, thereby reducing the opening depth of the adjusting groove 1121 and facilitating the opening and installation of the adjusting nut 114.

[0064] Further, the base 110 further comprises a plurality of positioning pins 115 for positioning the lead frame / strip 200, the positioning pins 115 are fixedly connected with the carrier 111 and / or the mounting block 113, and protrude relative to the table surface of the carrier 111, and the positioning pins 115 are distributed at both sides of the carrier 111 in the length direction and the width direction to surround the outer periphery of the lead frame / strip 200.

[0065] Preferably, the positioning pins 115 located at both sides of the carrier 111 in the length direction are fixedly connected with the carrier 111, and the positioning pins 115 located at both sides of the carrier 111 in the width direction are fixedly connected with the mounting block 113, so as to facilitate positioning of the lead frame / strip 200 while simplifying the structure on the carrier 111 and facilitating subsequent disassembly and replacement.

[0066] The pressing plate 133 is located above the mounting block 113, and the pressing plate 133 is provided with a relief portion 1331, which is a groove or a hole, and the relief portion 1331 corresponds to the positioning pin 115 on the adjacent mounting block 113, so as to avoid that the positioning pin 115 hinders the turning of the pressing plate 133.

[0067] The working process of the bearing device 100 is as follows: when the lead frame / strip 200 needs to be anchored on the turntable 111, the driving member 140 drives the transmission plate 121 to rise, the transmission part 1211 is suitable for pushing the follower 123 upward, so that the transmission member 122 is flipped away from the other end of the follower 123 away from the turntable 111, at this time, the rotating shaft 131 rotates counterclockwise synchronously with the transmission member 122, so as to drive the turnover member 132 and the pressing plate 133 to flip away from the turntable 111 synchronously, so as to avoid hindering the placement of the lead frame / strip 200; when the lead frame / strip 200 on the turntable 111 needs to be pressed, the driving member 140 drives the transmission plate 121 to descend, the transmission part 1211 is suitable for moving the follower 123 downward, so that the transmission member 122 is flipped to the turntable 111 away from the other end of the follower 123, at this time, the rotating shaft 131 rotates clockwise synchronously with the transmission member 122, so as to drive the turnover member 132 and the pressing plate 133 to flip to the turntable 111 synchronously, and abut against the long side of the lead frame / strip 200.

[0068] Further, referring to Figure 6 The utility model also provides a motion platform, including shift loading module 300 and preceding bearing device 100, shift loading module 300 with bearing device 100 transmission connection, and can drive bearing device 100 along first horizontal direction moves, to drive bearing device 100 shifts in or shifts away from marking tool. Shift loading module 300 specifically is linear module, and the utility model does not repeat here.

[0069] Preferably, the shift loading module 300 has two output ends, and the motion platform further comprises two lifting modules 400 respectively connected to the different output ends, the bearing devices 100 correspond to the lifting modules 400 one by one, and are arranged on different lifting modules 400, and the two bearing devices 100 are adapted to be lifted in the vertical direction under the drive of the lifting modules 400, so as to stagger in the shift direction of the shift loading module 300, so that the shift loading module 300 can drive the two bearing devices 100 to move back and forth without limiting each other, thereby improving the conveying efficiency.

[0070] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A load bearing device (100) characterized by, The application relates to a lead frame / belt pressing device. The device comprises a base (110) including a carrier (111) for carrying a lead frame / belt (200); a pressing plate assembly (130) rotatably connected with the base (110), the number of the pressing plate assembly (130) is two, and the two pressing plate assemblies are oppositely arranged; a transmission assembly (120) movably arranged on the base (110) and in transmission connection with the two pressing plate assemblies (130); and a driving member (140) arranged on the base (110) and capable of driving the transmission assembly (120) to move. The transmission assembly (120) is adapted to drive the two sets of pressing plate assemblies (130) to synchronously rotate towards or away from the table top of the carrier (111) under the driving of the driving member (140) so as to tightly press or release the edges of the lead frame / belt (200). The transmission assembly (120) comprises a transmission plate (121) movably connected with the base (110), a transmission part (1211) being recessed in the transmission plate (121); two transmission members (122) fixedly connected with the two pressing plate assemblies (130) respectively; and two followers (123) movably accommodated in the transmission part (1211) and arranged on the different transmission members (122) respectively. The transmission plate (121) is in transmission connection with the driving member (140), and the transmission plate (121) is adapted to drive the two sets of pressing plate assemblies (130) to synchronously rotate towards or away from the table top of the carrier (111) under the driving of the driving member (140). The transmission plate (121) is slidably connected with the base (110) in the vertical direction, the rotation axes of the pressing plate assemblies (130) are parallel to a first horizontal direction, the transmission part (1211) is a long strip structure with the length direction parallel to a second horizontal direction, the first horizontal direction and the second horizontal direction are perpendicular to each other, and the follower (123) is movable along the length direction of the transmission part (1211).

2. The load bearing device (100) according to claim 1, characterized in that The length direction of the carrier (111) is parallel to the first horizontal direction, and the width direction is parallel to the second horizontal direction, the two pressing plate assemblies (130) are oppositely arranged in the second horizontal direction and press the two long sides of the lead frame / belt (200) respectively. The pressing plate assembly (130) comprises two rotation shafts (131) rotatably arranged on the two sides of the base (110) in the first horizontal direction, the two rotation shafts (131) are coaxial and have axes parallel to the first horizontal direction; a turnover member (132) fixedly connected with the different rotation shafts (131) at the two ends respectively; and a pressing plate (133) fixedly connected with the turnover member (132). The transmission assembly (120) is arranged on one side of the base (110) in the first horizontal direction, and the transmission member (122) and the rotation shaft (131) adjacent to the transmission member (122) are fixedly connected. ​ ​ 3. The load bearing device (100) of claim 2, wherein, ​ 4. The load bearing device (100) according to claim 3, characterized in that ​ 5. The load bearing device (100) of claim 3, wherein, ​ ​ ​ ​ ​ 6. The load bearing device (100) as claimed in claim 5, characterized in that The pressing plate (133) extends to both sides of the carrier (111) in a first horizontal direction.

7. The load bearing device (100) as claimed in claim 3, wherein, The base (110) comprises: a bottom plate (112), on which the carrier (111) is detachably fixed; mounting blocks (113) arranged on the bottom plate (112), the mounting blocks (113) are two in number and oppositely arranged in a second horizontal direction, the carrier (111) is located between the two mounting blocks (113), the pressing plate assembly (130) corresponds to the mounting blocks (113) one by one and is respectively rotatably connected with different mounting blocks (113); wherein the mounting blocks (113) can be adjusted in position along the second horizontal direction.

8. The load bearing device (100) as claimed in claim 7, characterized in that, The base (110) further comprises a plurality of positioning pins (115) for positioning the lead frame / strip (200), the positioning pins (115) are fixedly connected with the carrier (111) and / or the mounting blocks (113) and protrude relative to the table surface of the carrier (111), the positioning pins (115) are distributed on both sides of the carrier (111) in the length direction and the width direction to surround the outer periphery of the lead frame / strip (200).

9. A motion platform characterized by, It comprises: a transfer module (300); a carrying device (100) in driving connection with the transfer module (300); wherein the carrying device (100) is the carrying device (100) as claimed in any one of claims 1 to 8.

10. The motion platform of claim 9 wherein, The transfer module (300) has two output ends, and the movement platform further comprises two lifting modules (400) respectively connected with different output ends of the transfer module (300), the carrying device (100) corresponds to the lifting module (400) one by one and is arranged on different lifting modules (400), and the two carrying devices (100) are adapted to be staggered in the transfer direction of the transfer module (300) under the drive of the lifting modules (400).

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