CN112272512A - SMD mounting system - Google Patents
SMD mounting system Download PDFInfo
- Publication number
- CN112272512A CN112272512A CN202011146023.5A CN202011146023A CN112272512A CN 112272512 A CN112272512 A CN 112272512A CN 202011146023 A CN202011146023 A CN 202011146023A CN 112272512 A CN112272512 A CN 112272512A
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- Prior art keywords
- assembly
- material supply
- platform
- picking
- mounting
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/0404—Pick-and-place heads or apparatus, e.g. with jaws
- H05K13/0406—Drive mechanisms for pick-and-place heads, e.g. details relating to power transmission, motors or vibration damping
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/0404—Pick-and-place heads or apparatus, e.g. with jaws
- H05K13/0408—Incorporating a pick-up tool
- H05K13/0409—Sucking devices
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/082—Integration of non-optical monitoring devices, i.e. using non-optical inspection means, e.g. electrical means, mechanical means or X-rays
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Operations Research (AREA)
- Automatic Assembly (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a surface mounting system for SMD, which comprises a material supply unit and a material supply platform for mounting the material supply unit, wherein the material supply unit sequentially comprises a material placing plate, a clamp assembly, a first base, a lifting device, a first supporting column, a second base and a bottom dimension rotating device from top to bottom.
Description
Technical Field
The invention relates to the field of SMD automatic processing equipment, in particular to a surface mounting system for an SMD.
Background
The current mounting system mainly comprises the following mounting processes: the pick-up end directly picks up the material that needs to paste the dress from the material storage area, then moves the material to paste the dress platform and carry out the dress technology, because of the material directly picks up by the pick-up end from the storage area, the material pick up can't make clear and definite the material central line position, leads to pasting the dress platform after the material picks up and picks up end central line and material central line skew, needs video detection equipment supplementary to accomplish the correction of material position, limited the promotion of pasting dress efficiency to a certain extent.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a surface mounting system for SMD, which is provided with a material supply unit capable of finely adjusting the position of a material to enable the center line of the material to coincide with the center line of the surface mounting system.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a surface mounting system for SMDs, comprising a material supply unit and a material supply platform for mounting the material supply unit, the material supply unit comprising in order from top to bottom:
the material placing plate is provided with a pin mark;
the clamping device comprises a clamping device assembly, wherein N clamping device terminals are arranged on the clamping device assembly, each clamping device terminal is provided with a clamping part, the clamping parts are located above the material placing plate and used for clamping materials on the material placing plate, and the clamping parts are circumferentially arranged along the central line of the material placing plate at intervals; the clamp assembly is used for driving the clamp terminal to move towards or back to the center line so as to drive the clamping part to move towards or back to the center line; wherein N is more than or equal to 4 and is an even number;
the first base is used for installing the clamp assembly, and a through hole is formed in the first base;
the lifting device is arranged below the first base and used for driving the first base to do lifting motion;
one end of the first support column is connected with the material placing plate and used for supporting the material placing plate, the other end of the first support column penetrates through the through hole and is fixed below the first base, and the first base can do lifting motion along the axial direction of the first support column;
the second base is used for fixedly mounting the lifting device;
the bottom dimension rotating device is used for driving the second base to rotate;
the bottom dimension rotating device is arranged on the material supply platform.
In some embodiments, a mounting base is provided on the material supply platform, and the bottom-dimensional rotating device is mounted on the mounting base.
In some embodiments, the arrangement of the plurality of material supply units on the material supply platform is as follows:
the material supply platform is provided with a plurality of concentric circles which take the center of the material supply platform as the center of a circle and have different radiuses, the mounting bases are arranged on the circumferences of the concentric circles at intervals, and the center line of the material placing plate is superposed with the center line of the mounting bases and is intersected with the circumferences; the minimum distance between two adjacent mounting bases can enable the component assembly on the bottom dimension rotating device to rotate around the central axis of the material supply unit at the same time.
In some embodiments, the mounting system further includes a first transporting device and a mounting platform, and the first transporting device is configured to transport the material on the material placing plate to the mounting platform.
In some embodiments, the first moving device includes a picking assembly connected to the moving assembly for picking the material on the material supply unit, and a moving assembly for moving the picking assembly to and from above the material supply platform and the mounting platform; the picking assembly includes a picking member including a picking end having a center corresponding to a center of the material when the picking assembly is positioned above the material supply platform.
In some embodiments, a first rotating device is disposed between the running assembly and the picking assembly, the first rotating device being configured to drive the picking assembly to rotate about a centerline of the picking assembly.
In some embodiments, the picking assembly further includes an assembly tray, a center of the assembly tray is connected to the first running device or the first rotating device, a plurality of the picking members are mounted on the assembly tray, and the picking members correspond to the material supply units on the material supply platform one by one.
In some embodiments, the mounting system further includes a support frame, and the mounting platform and the first operating device are disposed on the support frame.
In some embodiments, the support frame comprises a first support and a second support arranged opposite to each other, the first moving device is arranged between the first support and the second support, and the placement platform and the material supply platform are respectively located below a starting position and an ending position of the moving direction of the first moving device.
In some embodiments, the operating assembly is a linear motor, the linear motor includes a rotor and a stator, two ends of the stator are respectively and fixedly connected to the first support and the second support, the rotor is connected to the pickup assembly or the first rotating device, and the rotor reciprocates along a length direction of the stator to drive the pickup assembly to reciprocate along the length direction of the stator.
Compared with the prior art, the invention has the following beneficial effects:
through the technical scheme, the invention has the following specific operations during working: the method comprises the following steps that the initial position of a material pin corresponds to a pin mark of a material placing plate and is arranged in an area defined by the initial position of a clamping part, four side faces of the material are parallel to four sides of the material placing plate, if the material is a built-in pin surface-mounted device, a lifting device drives a first base to ascend, the first base ascends to drive a clamp assembly to ascend, and the top face of a clamp terminal is flush with the top face of the material; if the material is an external pin surface-mounted device, the lifting device drives the first base to ascend, the first base ascends to drive the clamp assembly to ascend, and the clamping part of the clamp terminal is slightly higher than the plane where the material pins are located; then one group of clamping parts which are oppositely arranged simultaneously move towards the center of the material placing plate and clamp two side surfaces of the material, so that the material is positioned at the center of the material placing plate, and the other group of clamping parts which are oppositely arranged simultaneously move towards the center of the material placing plate and clamp the other two side surfaces of the material, so that the center of the material is positioned on the central line of the material placing plate, and the adjustment of the position of the material is completed; after the material position adjustment is completed, according to the material in the required direction of follow-up process processing, end dimension rotary device drive second base is rotatory, in order to drive the part assembly more than the second base (including first support column, elevating gear, first base, the board is placed to anchor clamps subassembly and material) rotatory, make the material on the board is placed to the material rotatory to unanimous with the required direction of follow-up process processing, avoided the material rotary motion integrated at the end of picking up, the load that has alleviateed the dress platform end dimension rotating electrical machines, help pasting the promotion of dress efficiency. After the material supply unit finishes adjusting the position and the angle of the material, the clamping parts for clamping the material move back to the central line of the material placing plate, so that the distance between each group of clamping parts is slightly larger than the distance between two opposite side surfaces of the material, and the material can be conveniently picked up by a picking end in the subsequent process. The adjustment to material position and angle can be accomplished to the material supply unit, and the end of picking up of the device of subsequent handling only need to place the center of end and material and the center of board corresponds and can accomplish the accuracy of picking up the material to can directly be used for follow-up processing with the material, improved the work efficiency that material pasted dress platform greatly.
According to the invention, the material supply platform can be provided with a plurality of material supply units, so that the positions and angles of a plurality of materials can be adjusted at the same time, the picking ends of the devices in the subsequent process can pick up a plurality of materials at the same time, the picking efficiency is further improved, and the working efficiency of the material mounting platform is further improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
fig. 2 is a perspective view of a material supply unit of embodiment 1 of the present invention;
fig. 3 is a schematic structural view of a first base in embodiment 1 of the present invention;
fig. 4 is a schematic structural view illustrating an upper clamp assembly and a lower clamp assembly mounted on a first base in embodiment 1 of the present invention;
FIG. 5 is a schematic structural view of an upper jig assembly according to embodiment 1 of the present invention;
FIG. 6 is a schematic view of the structure of a lower jig assembly according to embodiment 1 of the present invention;
FIG. 7 is a sectional view of an upper clamp assembly according to embodiment 1 of the present invention;
fig. 8 is a schematic structural view illustrating connection of the first left slider and the first right slider of the upper clamp assembly with the clamp terminal in embodiment 1 of the present invention;
FIG. 9 is a schematic structural view illustrating the connection of the second left slider and the second right slider of the lower clamp assembly with the furniture terminal in embodiment 1 of the present invention;
fig. 10 is a schematic structural view of a material placement board in embodiment 1 of the present invention;
fig. 11 is a schematic view of the connection between the lifting device and the second base in embodiment 1 of the present invention;
fig. 12 is a schematic view of a connection structure of the second base, the stator of the lifting device, and the material placing plate in embodiment 1 of the present invention;
FIG. 13 is a schematic structural view of a pickup assembly in embodiment 1 of the present invention;
FIG. 14 is a layout of mounting bases on the material supply platform according to embodiment 1 of the present invention;
fig. 15 is an arrangement diagram of the material supply unit on the material supply platform in embodiment 1 of the present invention.
The attached drawings indicate the following:
1-a first running device, 11-a picking assembly, 111-a picking part, 1111-a picking end, 112-an assembly disc, 12-a running assembly, 121-a second rotor, 122-a second stator, 13-a first rotating device, 2-a second running device, 21-an end effector, 22-a fourth rotating device, 23-a fifth rotating device, 24-an upper arm, 25-a lower arm, 3-a material supply platform, 30-a material supply unit, 31-a material placing plate, 311-a pin identifier, 312-a gap, 32-a clamp assembly, 321-an upper clamp assembly, 3211-a first chute, 3212-a first left slide block, 3213-a first right slide block, 3214-a first screw rod, 322-a lower clamp assembly, 3221-a second chute, 3222-a second left slider, 3223-a second right slider, 3224-a second lead screw, 3225-a first support, 33-a first base, 331-a through hole, 332-an upper clamp mounting base, 333-a lower clamp mounting base, 334-a second support, 335-a second rotating device, 336-a third rotating device, 337-a first balancing weight, 338-a second balancing weight, 34-a lifting device, 341-a first stator, a first rotor, 35-a first support column, 36-a second base, 361-a second bottom plate, 362-a sliding rail, 37-a bottom rotating device, 38-a clamp terminal, 381-a clamping part, a 4-mounting platform, 5-a support, 51-a first support and 52-a second support.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
As shown in fig. 1, a surface mounting system for SMD includes a first operating device 1, a second operating device 2, a material supplying platform 3 and a surface mounting platform 4, wherein a material supplying unit 30 is mounted on the material supplying platform 3; the second material device 2 is used for placing materials on the material supply unit 30, the first operation device 1 is used for operating the materials finely adjusted by the material supply unit 30 to the mounting platform 4, and the mounting platform 4 is used for mounting the materials on a substrate to be packaged. In this embodiment, the substrate is a PCB, the PCB is placed on the mounting platform 4, and the mounting of the PCB is completed on the platform.
Specifically, as shown in fig. 2 to 12, the material supply unit 30 includes, in order from top to bottom, a material placing plate 31, a clamp assembly 32, a first base 33, a lifting device 34, a first support column 35, a second base 36, and a bottom-dimensional rotating device 37; the material placing plate is provided with a pin mark 311; the fixture assembly 32 is provided with a plurality of fixture terminals 38, each fixture terminal 38 is provided with a clamping portion 381, the clamping portion 381 is located above the material placing plate 31 and used for clamping materials on the material placing plate 31, the clamping portions 381 are circumferentially arranged along a center line of the material placing plate 31 at intervals, the fixture assembly 32 is used for driving the fixture terminals 38 to move towards or away from the center line so as to drive the clamping portions 381 to move towards or away from the center line, wherein the structure based on common materials is polygonal (existing materials are generally quadrangular), the number of the clamping portions is not less than 4, and therefore the number of the clamping terminals is not less than 4; the first base 33 is used for installing the clamp assembly 32, as shown in fig. 3 and 4, the first base 33 is further provided with a through hole 331; the lifting device 34 is connected with the first base 33, and the lifting device 34 is used for driving the first base 33 to do lifting movement; one end of the first support column 35 is connected to the material placing plate 31 for supporting the material placing plate 31, and the other end thereof penetrates through the through hole 331 of the first base 33 and is fixed below the first base 33, and the first base 33 can be driven by the lifting device 34 to perform lifting movement along the axial direction of the first support column 35; the second base 36 is used for fixedly mounting the lifting device 34; the bottom dimension rotating device 37 is used for driving the second base 36 to rotate, and the second base 36 rotates to drive the component assembly (including the first supporting column 35, the lifting device 34, the first base 33, the clamp assembly 32 and the material placing plate 31) above the second base 36 to rotate.
Specifically, in the present embodiment, as shown in fig. 10, the material placing plate 31 has a square structure, and in order to keep the material placing plate 31 balanced and stable, the first support columns 35 are disposed below the material placing plate 31 in two-to-two symmetry.
Through the technical scheme, when the mounting system works, the second operation device 2 places materials on the material supply unit 30, the material supply unit 30 adjusts the position and the angle of the materials, the center line of the materials is overlapped with the center line of the material placement plate 31, and the first operation device 1 operates the adjusted materials to the mounting platform 4 to perform the subsequent mounting process. The material supply unit 30 adjusts the position and the angle of the material in the following specific manner: the second running device 2 corresponds the initial position of the pin of the material to the pin mark 311 of the material placing plate 31 and places the material in the area surrounded by the initial position of the clamping part 381, and makes four side surfaces of the material parallel to four sides of the material placing plate 31, if the material is a built-in pin surface-mounted device, the lifting device 34 drives the first base 33 to ascend, the first base 33 ascends to drive the clamp assembly 32 to ascend, and the top surface of the clamping part 381 on the clamp terminal 38 is flush with the top surface of the material; if the material is an external pin surface-mounted device, the lifting device 34 drives the first base 33 to ascend, the first base 33 ascends to drive the clamp assembly 32 to ascend, so that the clamping portions 381 on the clamp terminal 38 are slightly higher than the plane where the pins of the material are located, then one group of the oppositely-arranged clamping portions 381 simultaneously move towards the center of the material placing plate 31 and clamp two side surfaces of the material, so that the material is located at the center of the material placing plate 31, and then the other group of the oppositely-arranged clamping portions 381 simultaneously move towards the center of the material placing plate 31 and clamp the other two side surfaces of the material, so that the center of the material is located on the central line of the material placing plate 31, and the adjustment of the position of the material is completed; after the position of the material is adjusted, according to the direction required by the subsequent process, the bottom dimension rotating device 37 drives the second base 36 to rotate, the second base 36 rotates to drive the component assembly (comprising the first supporting column 35, the lifting device 34, the first base 33, the clamp assembly 32 and the material placing plate 31) above the second base 36 to rotate, the material placing plate 31 rotates to drive the material clamped by the clamping part 381 to correspondingly rotate, so that the direction required by the subsequent process is consistent when the material rotates, and the adjustment of the angle of the material is completed; after the adjustment of the position and the angle of the material is completed, the clamping portions 381 move back to the central line of the material placing plate 31 at the same time, so that the distance between each group of clamping portions 381 is slightly larger than the distance between two opposite side surfaces of the material. Then, the first operation device 1 operates the adjusted material to the mounting platform 4 for mounting and processing.
The mounting system of the invention is provided with the material supply unit 30 which can adjust the position and the angle of the material, the adjustment of the position and the angle of the material can be directly finished on the material supply unit 30, the center line of the material is coincided with the center line of the material placing plate, and the angle of the material is consistent with the direction of the material when the material is mounted on the PCB, the accurate pickup of the material can be realized only by aligning the center of the pickup end on the first operation device 1 of the mounting system with the center of the material placing plate, the efficiency of picking up the material is improved, and the direction of the material is adjusted to be consistent with the direction of mounting on the PCB on the material supply unit 30, the pickup end can directly apply the material to the mounting of the PCB without angle adjustment of the material, thereby further increasing the efficiency of the mounting process, the working efficiency of the invention is improved. In addition, a plurality of material supply units 30 may be disposed on the material supply platform 3 to further increase the pick-up efficiency, thereby increasing the efficiency of the mounting process. Further, a plurality of material supply units can be divided into big material supply unit and little material supply unit, and big material supply unit is used for placing the maximum dimension not less than 10 mm's material, and little material supply unit is used for placing the maximum dimension less than 10 mm's material to be applied to different PCB board subsides according to actual demand and paste.
Specifically, as shown in fig. 2 and 4, the clamp assembly 32 includes an upper clamp assembly 321 and a lower clamp assembly 322, the upper clamp assembly 321 is disposed above the lower clamp assembly 322 and disposed to intersect with the lower clamp assembly 322, a center point of the intersection of the upper clamp assembly 321 and the lower clamp assembly 322 is located on a center line of the material placing plate 31, more specifically, as shown in fig. 5 and 6, the upper clamp assembly 321 includes a first sliding groove 3211, a first left slider 3212 and a first right slider 3213 disposed at two ends of the first sliding groove 3211 and capable of moving toward or away from each other along a length direction of the first sliding groove 3211, and a first lead screw 3214 disposed between the first left slider 3212 and the first right slider 3213 and having two ends respectively penetrating through the first left slider 3212 and the first right slider 3213, the lower clamp assembly 322 includes a second sliding groove 3221, a second left slider 3222 and a second slider 3223 disposed at two ends of the second sliding groove 3221 and capable of moving toward and away from each other along a length direction of the second sliding groove 3221 and disposed on the second sliding groove 3222 and the right slider 3222 and the second sliding groove 3222 and the second sliding The second lead screw 3224 is disposed between the sliders 3223 and has two ends respectively penetrating through the second left slider 3222 and the second right slider 3223, as shown in fig. 8 and 9, the first left slider 3212, the first right slider 3213, the second left slider 3222, and the second right slider 3223 are respectively provided with a clamp terminal 38, and in order to keep the clamp terminal 38 at the same height or to keep the clamping portions at the same height, the clamp terminal 38 on the second left slider 3222 and the second right slider 3223 are respectively connected to the second left slider 3222 and the second right slider 3223 through the first support 3225. More specifically, in the present embodiment, the first lead screw 3214 and the second lead screw 3224 are both ball screws.
As a more preferable embodiment, as shown in fig. 3 and 4, an upper clamp mounting seat 332 and a lower clamp mounting seat 333 are provided on the first base 33, the upper clamp mounting seat 332 is connected with the first base 33 through second supports 334 at both ends, the lower clamp mounting seat 333 passes through the lower part of the upper clamp mounting seat 332 and is arranged to intersect with the upper clamp mounting seat 332, the upper clamp assembly 321 is mounted on the upper clamp mounting seat 332, the lower clamp assembly 322 is mounted on the lower clamp mounting seat 333, more specifically, one end of a first sliding chute 3211 of the upper clamp assembly 321 and one end of a second sliding chute 3221 of the lower clamp assembly 322 are respectively provided with a second rotating device 335 and a third rotating device 336, in this embodiment, as shown in fig. 2, 4 and 7, the second rotating device 335 is arranged at one end mounted with a first right slider 3213 and is connected with a first lead screw 3214, the third rotating device 336 is arranged at one end mounted with a second left slider 3222 and is connected with a second lead screw 3224, the second rotating device 335 and the third rotating device 336 are used for driving the first lead screw 3214 and the second lead screw 3224 to rotate, so that the first left slider 3212, the first right slider 3213, the second left slider 3222, and the second right slider 3223 synchronously move in the opposite direction or in the opposite direction, and the first left slider 3212, the first right slider 3213, the second left slider 3222, and the second right slider 3223 synchronously move in the opposite direction or in the opposite direction, so as to drive the clamp terminals 38 on the first left slider 3212, the first right slider 3213, the second left slider 3222, and the second right slider 3223 synchronously move in the opposite direction or in the opposite direction. The upper and lower clamp assemblies 321 and 322 have the same connecting structure, the moving mechanism of the upper clamp assembly is specifically described, as shown in fig. 7 and 8, the first left slider 3212 and the first right slider 3213 are respectively provided with through holes (not shown), and the through hole is provided with internal threads, the thread directions in the through holes of the first left slider 3212 and the first right slider 3213 are opposite, the exterior of the first lead screw 3214 is provided with external threads matching with the internal threads, both ends of the first lead screw 3214 penetrate through the first left slider 3212 and the first right slider 3213 through the through holes on the first left slider 3212 and the first right slider 3213 and one end thereof is connected with the second rotating device 335, when the second rotating device 335 drives the first lead screw 3214 to rotate clockwise (or counterclockwise), because the internal thread directions of the through holes of the first left sliding block 3212 and the first right sliding block 3213 are opposite, therefore, the first left slider 3212 and the first right slider 3213 are synchronously moved in opposite directions by the matching of the internal threads of the through holes thereof and the external threads of the first lead screw 3214; similarly, when the second rotating device 335 drives the first lead screw 3214 to rotate counterclockwise (or clockwise), the first left slider 3212 and the first right slider 3213 move back to back. Similarly, the mechanism for the second left slider 3222 and the second right slider 3223 of the lower clamp assembly 322 move synchronously toward and away from each other can be seen. Because the crossed center of the upper clamp assembly 321 and the lower clamp assembly 322 is located on the center line of the material placing plate 31, the clamp terminals 38 on the first left slider 3212, the first right slider 3213, the second left slider 3222 and the second right slider 3223 move in the opposite direction or in the opposite direction, actually move close to or away from the center line of the material placing plate 31 synchronously, thereby realizing the adjustment of the position of the material and enabling the center line of the material to coincide with the center line of the material placing plate 31.
More specifically, as shown in fig. 10, the material placing plate 31 is provided with slits 312 circumferentially spaced along the center thereof, each slit 312 being located on a straight line passing through the center, and in the present embodiment, each gap 312 is circumferentially arranged at intervals and is respectively perpendicular to four sides of the material placing plate 31, two groups of gaps 312 which are arranged in pairs are formed, the straight line of each group of gaps 312 which are arranged oppositely is perpendicular to the straight line of the other group of gaps 312, the intersection point is the center of the material placing plate 31, the upper clamp assembly 321 corresponds to one group of gaps 312 which are arranged oppositely, the lower clamp assembly 322 corresponds to the other group of gaps 312 which are arranged oppositely, and the clamp terminals 38 on the first left slider 3212, the first right slider 3213, the second left slider 3222 and the second right slider 3223 can respectively move up and down in the corresponding gaps 312 or move towards or away from the central line of the material placing plate 31; specifically, in this embodiment, each clamping portion 381 is rod-shaped and parallel to the corresponding gap 312, the clamp terminal 38 is sheet-shaped and has a width smaller than the corresponding gap 312, so that the clamp terminal 38 can move up and down in the gap or move toward or away from the center of the material placing plate 31, the clamping portion 381 is disposed on the top of the clamp terminal 38 and is disposed along the length direction of the clamp terminal 38, and the movement process of the clamping portion 381 can be more stable through the arrangement of the clamping portion 381 and the clamp terminal 38.
In this embodiment, as shown in fig. 11 to 12, the lifting device 34 may be connected to the first base 33 through a second supporting column 39, the lifting device 34 includes a first stator 341 and a first mover 342 sleeved outside the first stator 341 and capable of performing lifting motion along the height direction of the first stator 341, the second supporting column 39 is connected to the first mover 341 and capable of performing lifting motion along with the lifting motion of the first mover 341, and one end of the first supporting column 35, which is far away from the material placing plate 31, is fixed to the first stator 341.
Specifically, the second base 36 includes a second base 361 and a slide rail 362 vertically disposed on the second base 361, and the first mover 341 is connected to the slide rail 362 via a slider (not shown); preferably, two parallel slide rails 362 are oppositely disposed on the second base plate 361, the lifting device 34 is disposed between the two slide rails 362, and the first mover 341 is connected to the two slide rails 362 through a slider, so that the first mover 341 can move up and down to maintain balance. It should be noted that the slide rail 362 may be not limited to one or two, and may be provided in plurality.
Furthermore, in order to balance the rotational inertia of the component assembly on the second base 36, a first weight 337 and a second weight 338 may be respectively mounted on the upper clamp mounting seat 332 and the lower clamp mounting seat 333, the first weight 337 is disposed away from the second rotating device 335, the second weight 338 is disposed away from the third rotating device 336, the weights of the first weight 337 and the second weight 338 are respectively equivalent to the weights of the second rotating device 335 and the third rotating device 336, the rotational inertia of the first base 33 may be balanced, and the rotational inertia of the component assembly on the upper portion of the second base 36 may be balanced, thereby improving the precision and dynamic performance of the bottom-dimensional rotating motor 37. In this embodiment, the second rotating device and the third rotating device are both rotating electric machines.
On the basis of the above embodiment, as a further improvement, the material supply platform 3 is provided with a mounting base 301, the bottom dimensional rotating device 37 is mounted on the mounting base 301, and a mark (not shown) and a mark (shown as a mark) are arranged beside the mounting base 301, wherein the mark (i) indicates that only a small material supply unit is allowed to be mounted, and the mark (ii) indicates that both a small material supply unit and a large material supply unit can be mounted. In order to further increase the work efficiency of the mounting system, a plurality of material supply units 30 may be provided, and each mounting base 301 corresponds to one material supply unit 30; the arrangement of the plurality of material supply units 30 on the material supply platform 3 is as follows: the material supply platform 3 is provided with a plurality of concentric circles which use the center of the material supply platform 3 as a circle center and have different radiuses, the installation bases 301 are arranged on the circumference of the concentric circles at intervals, the projection of the centers of the installation bases 301 and the material placing plates 31 on the material supply platform 3 is overlapped and is positioned on the circumference of the concentric circles, and the minimum distance between every two adjacent installation bases 301 enables the component assembly (the second base 36, the first support column 35, the lifting device 34, the first base 33, the clamp assembly 32 and the material placing plates 31) on the bottom dimension rotating device 37 to rotate around the central axis of the material supply unit 30.
On the basis of the above embodiment, specifically, as shown in fig. 13, the first operating device 1 includes a picking assembly 11 and an operating assembly 12, the picking assembly 11 is connected to the operating assembly 12, the picking assembly 11 is used for picking up the material on the material supply unit 30, and the operating assembly 12 is used for driving the picking assembly 11 to and fro above the material supply platform 1 and the mounting platform 4, so as to realize the transfer of the material on the material supply unit 30 onto the mounting platform 4; the pick up assembly 11 comprises a pick up component 111, the pick up component 111 comprising a pick up end 1111, the centre of the pick up end 1111 corresponds to the centre of the material when the pick up assembly 11 is positioned above the material supply platform 3, in this embodiment the pick up component 111 is a linear spool motor. Further, the picking assembly 11 can be connected to the running assembly 12 through a first rotating device 13, and the first rotating device 13 can drive the picking assembly to rotate, so that the picking end 1111 of the picking member 111 can be more matched with the material to be picked according to actual requirements. In this embodiment, the first rotating device is specifically a rotating electrical machine.
More specifically, the picking assembly 11 further includes an assembly disc 112, a center of the assembly disc 112 is fixedly connected to the first rotating device 13, specifically, the center of the assembly disc 112 is installed on an output shaft of the first rotating device 13, and a center line of the assembly disc 112 coincides with a central axis of the output shaft. A plurality of picking parts 111 are arranged on the assembly tray 112 at intervals, and when the picking assemblies 11 are positioned on the material supply platform 3, the plurality of picking parts 111 correspond to the material supply units 30 one by one. In this embodiment, the mounting manner of each pickup unit 111 on the assembly tray 112 is specifically as follows: a plurality of mounting holes (not marked in the figure) are arranged on the assembling tray 112 at intervals, the number and distribution of the mounting holes are consistent with those of the mounting bases 301 on the material supplying platform 3, and each picking part 111 is correspondingly mounted on one mounting hole, so that when the first running device 1 is positioned above the material supplying platform 3, the center of the picking end 1111 of the picking part 111 is positioned right above the center of the material placing plate 31 of the material supplying unit 30. Further, each pick-up member 111 is independently controlled to meet the different height requirements of the material. In the present embodiment, the pickup member 111 is a linear bobbin motor.
On the basis of the above embodiment, as shown in fig. 1, in this embodiment, the second operating device 2 is a mechanical arm, and specifically includes an end effector 21 for picking up the material, and a fourth rotating device 22, a fifth rotating device 23, an upper arm 24 and a lower arm 25, two ends of the lower arm 25 are respectively connected to the fourth rotating device 22 and the fifth rotating device 23, two ends of the upper arm 24 are respectively connected to the fifth rotating device 23 and the end effector 21, the fourth rotating device 22 is used for driving one end of the lower arm 25 to rotate, and the fifth rotating device 23 is used for driving one end of the upper arm 24 to rotate so as to drive the other end of the upper arm 24 to rotate. Driven by the fourth and fifth rotating means 22, 23, the upper and lower arms 24, 25 move to bring the end effector 21 to perform the transfer of the material onto the material supply unit 30. In this embodiment, the fourth rotating device and the fifth rotating device are specifically rotating electric machines.
On the basis of the above embodiment, as shown in fig. 1, the mounting system for SMD further includes a support frame 5, the mounting platform 4 and the first moving device 1 are disposed on the support frame 5, specifically, the support frame 5 includes a first support 51 and a second support 52 disposed at an interval, the first moving device 1 is disposed between the first support 51 and the second support 52, and the mounting platform 4 and the material supplying platform 3 are respectively located below a start position and an end position of the moving direction of the first moving device 1, in this embodiment, the mounting platform 4 is disposed near the first support 51, the material supplying platform 3 is disposed near the second support 52, and the interval between the first support 51 and the second support 52 is large enough to form a certain distance between the mounting platform 4 and the material supplying platform 1 in the horizontal direction.
In this embodiment, as shown in fig. 1, the operation assembly 12 of the first operation device 1 is a linear motor, the linear motor includes a second mover 121 and a second stator 122, two ends of the second stator 122 are respectively fixedly connected to the first bracket 51 and the second bracket 52, the second mover 121 makes a linear reciprocating motion along a length direction of the second stator 122, the first rotation device 13 is connected to the second mover 122, and the second mover 122 makes a linear reciprocating motion to drive the pickup assembly 11 to make a linear reciprocating motion, so that the pickup assembly 11 moves back and forth above the material supply platform 3 and the mounting platform 4 to transport the material on the material supply unit 30 to the mounting platform for packaging.
Further, as shown in fig. 14 to 15, in order to optimize the resource allocation of the mounting system and based on the consideration of precision and efficiency, the material supply unit 30 on the material supply platform 3 is installed with large material supply units and small material supply units according to the proportion of large material (size not less than 10mm) and small material (size less than 10mm) in the mounting process, and the specific installation distribution mode is determined by the following steps:
firstly, the radiuses of concentric circles on the material supply platform 3 from outside to inside are respectively assumed to be R1，R2，…RnI belongs to {1,2, … … n }, and the radius of the working area of the small material supply unit is r1The radius of the working area of the large material supply unit is r2,，R1，R2，…RnAnd r1And r2The total number of the first marks of the material supply platform is P, and the total number of the second marks is Q;
determining the maximum allowable radius R of concentric circlesmaxThe concrete mode is as follows: let the precision of the mounting system be e, and the precision of the operating component be e1In mm, the first rotating means 13 has a rotational accuracy of θ1The rotational accuracy of the material supply unit 30 is theta2In degrees; the mounting platform is square, the maximum allowable SMD size of the mounting platform is 2l, the unit is mm, and the maximum allowable radius R of the concentric circle on the material supply platform 3max＝f(e，e1，l，θ1，θ2) In mm;
and thirdly, determining the radius value range of each concentric circle: because the selection of the radius of each concentric circle needs to consider the working radius of the large material supply unit and the small material supply unit, and j belongs to {2,3, …, n }, the radius of each concentric circle needs to satisfy that alpha is less than or equal to R1≤Rmax，Rj-1≥Rj+r1+r2，r2+2r1＞Rn≥r2；
The radius of each concentric circle is the maximum value, the number of the concentric circles is m, and the radius from outside to inside isAre each R11，R12，…，R1mAnd h is {1,2, …, m }, w is {2,3, …, m }, then R is11＝Rmax，R1w＝R1(w-1)-r1-r2。
As shown in FIG. 14, the angles of the corresponding concentric circles covered by the working area of the small material supply unit are respectively alpha1，α2，…，αmThen α ish＝roundup[2arcsin(r1/R1h)，1](formula 1);
the angles of the corresponding concentric circles covered by the working area of the large material supply unit are respectively beta1，β2，…，βmAnd then: beta is ah＝roundup[2arcsin(r2/R1h)，1](formula 2);
when the material supply platform has no mark, determining the maximum total number P of the marksmax，
Determining the value range Q of the total number of the material supply platform identifications as follows:
determining the priority of the identifier (II) distribution condition:
the priority of the distribution is marked from high to low: 1) the concentric circle with the largest radius must have a mark II; 2) when Q is an even number, the marks on the concentric circles are inevitably symmetrically arranged; 3) under the condition that the P value is not changed, the distribution priority of the identifier (II) on the concentric circle is from inside to outside;
determining PhWith respect to QhExpression (c):
let PhNumber of h concentric circles QhNumber of symbols, P, for the h-th concentric circlehAnd QhAre all non-negative integers, then PhWith respect to QhIs expressed as
Ph＝INT[(360-Qhβh)/αh](formula 5);
ninthly determination of PhAnd QhThe value of (A) is as follows:
synthesis step iv-ninthly, the existence of unique { P1，P2，…，Pm}＝{x1，x2，…，xm}，{Q1，Q2，…，Qm}＝{y1，y2，…，ymIs made to approach (P + Q) to PmaxAnd Q/P is closest to k; wherein k is the ratio of the sizes of the large material and the small material recommended by the mounting system;
r determines the radius of each concentric circle:
current number of concentric circles n ═ m, { P1,P2,…,Pm}＝{x1,x2,…，xm}，{Q1,Q2,…,Qm}＝{y1,y2,…,ymConsider the precision problem at PhAnd QhTaking the minimum value of the radius of each concentric circle as R under the premise of no change2hAnd then:
radius R of each concentric circle1，R2，…，RmFrom inside to outside, v ∈ {2,3, …, (m-1) }, then:
the number of the large material supply units and the small material supply units on the material supply platform 3 is designed through the steps, so that the accuracy and the efficiency of the mounting system can be maximized.
When the SMD mounting system according to any of the above embodiments operates, the operation flow is as follows:
1. the mechanical arm picks up corresponding materials from the material area, and an end effector of the mechanical arm moves to the position above the corresponding material supply unit under the matched driving of the second rotating device and the third rotating device, so that the center of the end effector is superposed with the center of the material supply unit;
2. the mechanical arm end effector places materials on the material supply unit, the material supply unit adjusts the positions of the materials to enable the center line of the materials to be coincident with the center line of a material placing plate on the material supply unit, the materials are clamped, and then the angle of the materials is rotated to enable the materials to be consistent with the angle of the materials to be packaged on the mounting platform;
3. repeating the step 1 and the step 2 to enable all the material supply units on the material supply platform to complete the position and angle adjustment of the materials, and enabling the mechanical arm to leave the area above the material supply platform;
4. the operation assembly drives the assembly disc to move to an area above the material supply platform, so that the central line of the assembly disc is superposed with the central line of the material supply platform, and meanwhile, the first rotating device rotates the assembly disc, so that the central line of each pickup part is superposed with the central line of the corresponding material supply unit;
5. each picking component adjusts the picking distance according to the height of the corresponding material, so that a front end suction nozzle of the picking end moves to the material and certain pressure is kept;
6. the clamping part on the material supply unit loosens the material, the front end suction nozzle at the picking end of the picking part picks up the material and returns to the original position, the operation assembly drives the assembly disc to move to the position above the mounting platform, and then the step 1 and the step 2 are restarted;
7. the operation assembly and the first rotating device move simultaneously, so that the central line of a picking component picking up the material is superposed with the central line of the PCB package corresponding to the material picked up by the picking component, and the picking component adjusts the mounting distance according to the height of the material corresponding to the picking component to finish the mounting of the material and return to the original position;
8. repeating the step 7 until the picked materials are completely pasted, and if the step 3 is finished, restarting the step 4;
9. and repeating the steps 1-8 until all the materials are mounted.
The SMD mounting system can adjust the position and the angle of a material on the material supply platform, so that the picking end aligns at the center of the material as soon as possible and finishes picking, and the picked material can be directly used for packaging without angle adjustment on the mounting platform because the adjustment of the material angle is finished on the material supply platform, thereby not only reducing the load of a bottom-dimensional rotating motor of the mounting platform, but also improving the mounting efficiency.
Example 2
This example differs from example 1 in that: the structure of the running assembly can also be as follows: the device comprises a driving device, a sliding rail and a sliding block, wherein the sliding block can do reciprocating motion along the length direction of the sliding rail under the driving of the driving device, two ends of the sliding rail are fixed between a first bracket and a second bracket, the driving device is arranged at one end of the sliding rail, an output shaft of the driving device is connected with the sliding block, and the sliding block is connected with a first rotating device or a pickup assembly; the slider does the reciprocating motion along the length direction of slide rail under drive arrangement's drive to drive and pick up the subassembly and do the reciprocating motion, make and pick up the subassembly and come and go in the top of pasting dress platform and material supply platform, in order to realize transporting the material to pasting the dress platform from material supply platform and encapsulate. The driving device is an oil cylinder or an air cylinder and the like.
Example 3
The present embodiment differs from embodiment 1 in that the structure of the operation unit may be: the device comprises a fifth rotating device, a ball screw and a fixing piece, wherein two ends of the ball screw are rotatably arranged between the first bracket and the second bracket; the fixing piece is fixed outside the nut of the ball screw and connected with the picking assembly or the first rotating device. When the fifth rotating device drives the ball screw to rotate clockwise or anticlockwise, the nut on the ball screw linearly reciprocates along the length direction of the ball screw, so that the fixing piece fixed outside the nut is driven to linearly reciprocate, and the picking assembly is driven to linearly reciprocate.
Besides the above embodiments, the structure of the operation assembly may be other structures disclosed in the art, which have the same function and can drive the picking assembly to make a linear reciprocating motion.
The term "synchronous" in this application means that two components move simultaneously at the same speed and the same distance in the same time; "center line" in this application, such as the center line of a material, the center line of a material placement platform, refers to a straight line passing through the center point of the plane of the part and perpendicular to the plane.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A SMD mounting system, comprising a material supply unit and a material supply platform for mounting the material supply unit, wherein the material supply unit comprises from top to bottom:
the material placing plate is provided with a pin mark;
the clamping device comprises a clamping device assembly, wherein N clamping device terminals are arranged on the clamping device assembly, each clamping device terminal is provided with a clamping part, the clamping parts are located above the material placing plate and used for clamping materials on the material placing plate, and the clamping parts are circumferentially arranged along the central line of the material placing plate at intervals; the clamp assembly is used for driving the clamp terminal to move towards or back to the center line so as to drive the clamping part to move towards or back to the center line; wherein N is more than or equal to 4 and is an even number;
the first base is used for installing the clamp assembly, and a through hole is formed in the first base;
the lifting device is arranged below the first base and used for driving the first base to do lifting motion;
one end of the first support column is connected with the material placing plate and used for supporting the material placing plate, the other end of the first support column penetrates through the through hole and is fixed below the first base, and the first base can do lifting motion along the axial direction of the first support column;
the second base is used for fixedly mounting the lifting device;
the bottom dimension rotating device is used for driving the second base to rotate;
the bottom dimension rotating device is arranged on the material supply platform.
2. A surface mounting system for SMD as set forth in claim 1, wherein said material supply platform is provided with a mounting base on which said bottom-dimensional rotating means is mounted.
3. A surface mounting system for SMDs according to claim 2, wherein a plurality of said material supply units are arranged on said material supply platform as follows:
the material supply platform is provided with a plurality of concentric circles which take the center of the material supply platform as the center of a circle and have different radiuses, the mounting bases are arranged on the circumferences of the concentric circles at intervals, and the center line of the material placing plate is superposed with the center line of the mounting bases and is intersected with the circumferences; the minimum distance between two adjacent mounting bases can enable the component assembly on the bottom dimension rotating device to rotate around the central axis of the material supply unit at the same time.
4. A mounting system for SMD as set forth in claim 1, further comprising a first transporting device for transporting said materials on said material placing plate to said mounting platform, and a mounting platform.
5. The surface mounting system for SMD as set forth in claim 4, wherein said first moving means includes a pickup assembly and a moving assembly, said pickup assembly being connected to said moving assembly, said pickup assembly being adapted to pick up the materials on said material supply unit, said moving assembly being adapted to move said pickup assembly to and from above said material supply platform and said mounting platform; the picking assembly includes a picking member including a picking end having a center corresponding to a center of the material when the picking assembly is positioned above the material supply platform.
6. A surface mounting system for SMD according to claim 5, characterised in that between said moving assembly and said picking assembly there are first rotating means for driving said picking assembly in rotation around its centre line.
7. The surface mounting system for SMD as set forth in claim 6, wherein the picking assembly further includes an assembling tray having a center connected to the first running device or the first rotating device, a plurality of the picking members are mounted on the assembling tray, and the picking members are in one-to-one correspondence with the material supplying units on the material supplying platform.
8. A mounting system according to any of claims 5-7, characterised in that said mounting system further comprises a support frame, said mounting platform and said first runner being arranged on said support frame.
9. A mounting system for SMDs according to claim 8, wherein said support frame includes a first support and a second support arranged opposite to each other, said first runner being arranged between said first support and said second support, said mounting platform and said material supply platform being located below a starting position and an ending position, respectively, of a direction of movement of said first runner.
10. The surface mounting system for SMD as claimed in claim 9, wherein the moving component is a linear motor, the linear motor includes a mover and a stator, two ends of the stator are respectively and fixedly connected to the first bracket and the second bracket, the mover is connected to the picking component or the first rotating device, and the mover reciprocates along a length direction of the mover to drive the picking component to reciprocate along the length direction of the stator.
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