Dispensing and feeding device of chip mounter

Abstract

A chip mounter dispensing and feeding device disclosed by the present invention comprises a feeder disc, a glue supply assembly, a transverse moving module, a rotating module and a scraper assembly, the transverse moving module is used for driving the feeder disc to move in the horizontal direction, the rotating module is used for driving the feeder disc to rotate, and the scraper assembly is used for scraping glue in the feeder disc to be flat. The scraper assembly comprises a scraper, a scraper seat, a thickness detector and a detector mounting plate, the scraper is mounted on the scraper seat and extends into the feeder plate, the length of the part, located on the feeder plate, of the scraper is larger than or equal to the diameter of the feeder plate, and a gap is formed between the bottom of the scraper and the surface of the feeder plate; the thickness detector is mounted on the detector mounting plate and located above the feeder plate, and the thickness detector is used for detecting the thickness of glue in the feeder plate. According to the dispensing and feeding device of the chip mounter, the feeder is adopted to supply glue, glue supply is uniform through glue scraping, and the device is simple in structure and low in cost.

Description

Technical Field

[0001] The invention relates to the field of chip mounters, and in particular to a glue dispensing and feeding device for chip mounters. Background Art

[0002] SMT (surface mount technology), whose full name is SurfaceMount Technology, is a circuit assembly technology that mounts pinless or short-lead surface mount components (abbreviated as SMC / SMD, called sheet components in Chinese) on the surface of printed circuit boards (PCB) or other substrates, and assembles them by soldering through reflow soldering or dip soldering.

[0003] During the SMT process, glue is precisely applied to specific locations on the printed circuit board (PCB) to firmly adhere electronic components to the PCB, enhance the adhesion of the components to the PCB, and prevent them from shifting or falling off during subsequent processing, transportation or use.

[0004] The existing glue dispensing uses a glue dispensing machine, which accurately controls the glue extrusion amount, glue dispensing position and glue dispensing time to accurately apply glue on the PCB board. The glue dispensing machine feeds materials through pneumatic, screw, plunger and other structures, and has a complex structure and high cost. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a glue dispensing and feeding device for a chip mounter, which adopts a feeder to supply glue and makes the glue supply uniform by scraping the glue, has a simple device structure and low cost.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A glue dispensing and feeding device for a chip mounter, comprising:

[0008] Feeder tray, used to load glue;

[0009] Glue supply component, used to inject glue into the feeder plate;

[0010] The lateral movement module is used to drive the flyer to move in the horizontal direction, and includes a base, a support frame and a driving unit. The support frame is slidably connected to the base through a linear guide rail, and the driving unit is installed on the base and used to drive the support frame to move;

[0011] A rotating module is installed on the supporting frame and is used to drive the feeder plate to rotate;

[0012] A scraper assembly is used to scrape the glue in a feeder plate, comprising a scraper, a scraper seat, a thickness detector and a detector mounting plate. The scraper is mounted on the scraper seat, extends to the inside of the feeder plate, and the length of the scraper located on the feeder plate is greater than or equal to the diameter of the feeder plate. There is a gap between the bottom of the scraper and the surface of the feeder plate. The thickness detector is mounted on the detector mounting plate and is located above the feeder plate. The thickness detector is used to detect the thickness of the glue in the feeder plate.

[0013] As a further improvement of the above technical solution, the side of the scraper facing the rotation direction of the feeder disc is set to an arc-shaped concave surface.

[0014] As a further improvement of the above technical solution, the scraper assembly also includes a height adjustment mechanism, which is installed on the mounting frame, and the scraper seat is installed at the output end of the height adjustment mechanism. The height adjustment mechanism is used to drive the scraper seat to rise and fall to adjust the distance between the scraper and the feeder plate.

[0015] As a further improvement of the above technical solution, the height adjustment mechanism includes a lifting seat and a differential thread transmission micrometer head, the lifting seat is fixed on the mounting frame, the scraper seat is slidably connected to the lifting seat along the vertical direction, the differential thread transmission micrometer head is installed on the mounting frame, and the output end of the differential thread transmission micrometer head is fixedly connected to the scraper seat.

[0016] As a further improvement of the above technical solution, an elastic buffer is arranged between the scraper seat and the mounting frame.

[0017] As a further improvement of the above technical solution, the glue supply assembly includes a glue storage container, a glue injection tube and a tube bracket. The glue storage container is installed on a mounting frame, and its discharge port is connected to the glue injection tube. One end of the glue injection tube away from the glue storage container is supported by a tube bracket connected to the mounting frame, and the discharge port of the glue injection tube is located directly above the feeder plate.

[0018] As a further improvement of the above technical solution, the transverse movement module also includes a positioning mechanism, which includes a rack arranged on the base and an elastic positioning member arranged on the mounting frame, the elastic positioning member includes a fixed seat, a sliding hole arranged on the fixed seat, a positioning block slidably connected to the sliding hole, an installation cavity arranged on the fixed seat and connected to the side wall of the sliding hole, a fixed block arranged in the installation cavity, an elastic sheet arranged on the fixed block and a limit block arranged on the fixed block, the side wall of the positioning block is provided with a protrusion, the protrusion extends into the installation cavity and abuts against the elastic sheet, the elastic sheet is used to provide an elastic force so that the positioning block has a tendency to move downward, and the bottom of the positioning block is provided with a tooth groove engaged with the rack.

[0019] As a further improvement of the above technical solution, the rotating module includes a rotating drive unit, a transmission mechanism and a rotating assembly, the rotating assembly includes a rotating seat fixedly connected to the mounting frame and a rotating shaft rotatably connected to the rotating seat, the feeder plate is fixedly connected to the top of the rotating shaft, and the rotating drive unit is used to provide a torque and transmit it to the rotating shaft through the transmission mechanism to drive the rotating shaft to rotate.

[0020] As a further improvement of the above technical solution, the rotation drive unit includes a motor installed on a mounting frame, and the transmission mechanism includes a driving gear fixedly connected to the main shaft of the motor, a transmission gear rotatably arranged on the mounting frame, and a driven gear fixedly connected to the rotating shaft, and the transmission gear is meshedly connected with the driving gear and the driven gear.

[0021] As a further improvement of the above technical solution, a material receiving tray is arranged on the mounting frame, and the material receiving tray is arranged below the feeder tray, and the diameter of the material receiving tray is larger than the diameter of the feeder tray.

[0022] The beneficial effects of the present invention are as follows: glue is injected into the feeder plate through the glue supply component, the feeder plate is driven to move for loading through the lateral movement module, and then the feeder plate is driven to rotate through the rotation module. While the feeder plate is rotating, the glue in the feeder plate is scraped flat by a scraper to ensure that the glue head of the placement machine takes a consistent amount of glue in the feeder plate each time, that is, the glue dispensing and feeding device of the placement machine of the present invention supplies glue evenly, has a simple structure and is low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a schematic diagram of the assembly of a dispensing and feeding device for a chip mounter according to an embodiment of the present invention;

[0025] Figure 2 1 is a front view of a dispensing and feeding device for a chip mounter according to an embodiment of the present invention;

[0026] Figure 3 It is a structural schematic diagram of a lateral movement module in a dispensing and feeding device for a chip mounter according to an embodiment of the present invention;

[0027] Figure 4 It is a structural schematic diagram of a positioning mechanism in a dispensing and feeding device for a chip mounter according to an embodiment of the present invention;

[0028] Figure 5 It is a structural schematic diagram of a rotating module in a dispensing and feeding device for a chip mounter according to an embodiment of the present invention;

[0029] Figure 6 It is a cross-sectional view of a rotating module in a dispensing and feeding device for a chip mounter according to an embodiment of the present invention;

[0030] Figure 7 It is a structural schematic diagram of a scraper assembly in a dispensing and feeding device for a chip mounter according to an embodiment of the present invention;

[0031] Figure 8 It is a structural schematic diagram of a height adjustment mechanism in a dispensing and feeding device for a chip mounter according to an embodiment of the present invention;

[0032] Fig. 9 The present invention is a schematic diagram of the structure of a scraper in a dispensing and feeding device of a chip mounter according to an embodiment of the present invention.

[0033] Reference numerals: 100, feeder plate; 110, receiving plate; 200, scraper assembly; 210, scraper; 220, scraper seat; 230, height adjustment mechanism; 231, lifting seat; 232, second linear guide rail; 233, differential thread transmission micrometer head; 240, spring; 250, thickness detector; 260, detector mounting plate; 310, glue storage container; 320, pipe bracket; 400, traverse module; 410, base; 420, mounting frame; 430, first linear guide rail; 431, traverse slide rail; 43 2. Transverse sliding block; 440. Positioning mechanism; 441. Rack; 442. Elastic positioning member; 4421. Fixed seat; 4422. Sliding hole; 4423. Positioning block; 4424. Protrusion; 4425. Fixed block; 4426. Elastic sheet; 500. Rotating module; 510. Motor; 521. Driving gear; 522. First transmission gear; 523. Second transmission gear; 524. Driven gear; 525. Gear shaft; 530. Rotating assembly; 531. Rotating shaft; 532. Rotating seat; 533. Bearing. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work belong to the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. For example, fixed connection / fixed installation can be selected according to the needs of screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting and other methods. For example, detachable connection can be selected according to the needs of screw connection, bolt connection, threaded connection, snap connection, mortise and tenon connection, Velcro connection and other methods. The various technical features in the invention can be combined interactively without conflicting with each other.

[0035] Reference Figure 1 , Figure 2 An embodiment of the present invention provides a glue dispensing and feeding device for a chip mounter, comprising a feeder plate 100, a glue supply assembly, a lateral movement module 400, a rotation module 500 and a scraper assembly 200, wherein the feeder plate 100 is used to load glue, so that the glue head of the chip mounter can take the glue, and the glue head adheres the glue to the PCB board so that the electronic components can be firmly attached to the PCB board.

[0036] Specifically, the glue supply assembly is used to inject glue into the feeder plate 100 to avoid glue shortage. The glue supply assembly includes a glue storage container 310, a glue injection tube and a tube bracket 320. The glue storage container 310 is installed on the mounting frame 420 and is used to store spare glue. One end of the glue injection tube is connected to the discharge port of the glue storage container 310, and the other end of the glue injection tube is located directly above the feeder plate 100, and the glue injection tube is fixedly supported by the tube bracket 320 connected to the mounting frame 420. When the feeder plate 100 is about to run out of glue, the valve of the glue storage container 310 is opened, and the glue in the glue storage container 310 flows into the feeder plate 100 through the glue injection port for glue replenishment.

[0037] In this embodiment, the lateral movement module 400 is used to drive the feeder plate 100 to move horizontally, so that the feeder plate 100 enters the placement machine for feeding, or the feeder plate 100 exits the placement machine for maintenance. Figure 2 and Figure 3 The transverse movement module 400 includes a base 410, a support frame and a driving unit. The support frame is slidably connected to the base 410 through two parallel first linear guides 430. Specifically, the transverse slide rail 431 of the first linear guide 430 is installed on the base 410, and the transverse slider 432 of the first linear guide 430 is installed at the bottom of the mounting frame 420. The driving unit is installed on the base 410 and is used to drive the support frame to move. The driving unit can drive linear motion driving mechanisms such as linear motors 510, linear modules, and cylinders.

[0038] Further, see Figure 3 and Figure 4The lateral movement module 400 further includes a positioning mechanism 440, which includes a rack 441 disposed on the base 410 and an elastic positioning member 442 disposed on the mounting frame 420, wherein the elastic positioning member 442 includes a fixed seat 4421, a sliding hole 4422 disposed on the fixed seat 4421, a positioning block 4423 slidably connected to the sliding hole 4422, an installation cavity disposed on the fixed seat 4421 and connected to the side wall of the sliding hole 4422, a fixed block 4425 disposed in the installation cavity, an elastic sheet 4426 disposed on the fixed block 4425, and a limit block disposed on the fixed block 4425, wherein the positioning block 4423 The side wall is provided with a protrusion 4424, and the protrusion 4424 extends into the installation cavity and abuts against the elastic sheet 4426. The elastic sheet 4426 is used to provide an elastic force to make the positioning block 4423 have a tendency to move downward. The bottom of the positioning block 4423 is provided with a tooth groove meshing with the rack 441. When the mounting frame 420 moves relative to the base 410, the positioning block 4423 also moves relative to the rack 441, so that the movement of the transverse movement module 400 has a damping feeling. When the mounting frame 420 moves to the specified position, the rack 441 on the positioning block 4423 is embedded in the rack 441 at the specified position, thereby improving the displacement accuracy of the mounting frame 420.

[0039] In this embodiment, the rotating module 500 is used to drive the flywheel plate 100 to rotate so that the scraper assembly 200 can scrape the glue in the flywheel plate 100. Figure 5 and Figure 6 The rotating module 500 includes a rotating drive unit, a transmission mechanism and a rotating assembly 530. The rotating assembly 530 includes a rotating seat 532 and a rotating shaft 531. The rotating seat 532 is fixedly connected to the mounting frame 420. The rotating shaft 531 is installed on the rotating seat 532 through a bearing 533. The feeder plate 100 is fixedly connected to the top of the rotating shaft 531, and the center of the feeder plate 100 is located on the axis of the rotating shaft 531. The rotating drive unit is used to provide a torque and transmit it to the rotating shaft 531 through the transmission mechanism to drive the rotating shaft 531 to rotate, thereby driving the feeder plate 100 to rotate.

[0040] Further, the rotation drive unit includes a motor 510 installed on a mounting frame 420, and the transmission mechanism includes a driving gear 521 fixedly connected to the main shaft of the motor 510, a transmission gear rotatably arranged on the mounting frame 420, and a driven gear 524 fixedly connected to the rotating shaft 531. The transmission gear includes a first transmission gear 522 and a second transmission gear 523, and the first transmission gear 522 and the second transmission gear 523 are rotatably connected to the mounting frame 420 through the same gear shaft 525. The first transmission gear 522 is meshed and connected with the driving gear 521, and the second transmission gear 523 is meshed and connected with the driven gear 524. The diameter of the first transmission gear 522 is larger than the diameter of the driving gear 521, the diameter of the second transmission gear 523 is smaller than the diameter of the first transmission gear 522, and the diameter of the driven gear 524 is larger than the diameter of the second transmission gear 523. Through the above arrangement, the rotational motion of the main shaft of the motor 510 is transmitted to the rotating shaft 531, and is decelerated, so that the flyer plate 100 reaches a suitable rotation speed.

[0041] In this embodiment, the scraper assembly 200 is used to scrape the glue in the feeder plate 100 to make the glue supply uniform so that the glue head of the placement machine can evenly take the glue. Figure 7 and Figure 8 The scraper assembly 200 includes a scraper 210, a scraper seat 220, a thickness detector 250 and a detector mounting plate 260. The scraper 210 is mounted on the scraper seat 220. The scraper 210 extends to the inside of the feeder plate 100, and the length of the scraper 210 located on the feeder plate 100 is greater than or equal to the diameter of the feeder plate 100, so that all the glue in the feeder plate 100 can be scraped when the feeder plate 100 rotates. There is a gap between the bottom of the scraper 210 and the surface of the feeder plate 100, and the height of the gap is the thickness of the glue after scraping. The thickness detector 250 is mounted on the detector mounting plate 260 and is located above the feeder plate 100. The thickness detector 250 is used to detect the thickness of the glue in the feeder plate 100 to ensure the accuracy of the glue supply.

[0042] Further, see Fig. 9 The side of the scraper 210 facing the rotation direction of the feeder plate 100 is set to an arc-shaped concave surface, thereby forming a material storage space. When the scraper 210 scrapes the glue in the feeder plate 100, the excess glue will enter the material storage space, thereby ensuring the glue scraping effect.

[0043] Further, see Figure 7The scraper assembly 200 further includes a height adjustment mechanism 230, which is mounted on the mounting frame 420. The scraper seat 220 is mounted on the output end of the height adjustment mechanism 230. When the thickness detector 250 detects that the thickness of the glue after scraping in the feeder plate 100 does not meet the requirements, the height adjustment mechanism 230 drives the scraper seat 220 to rise and fall to adjust the distance between the scraper 210 and the feeder plate 100, so that the thickness of the glue after scraping reaches the specified thickness.

[0044] Specifically, refer to Figure 7 The height adjustment mechanism 230 includes a lifting seat 231 and a differential thread transmission micrometer 233. The lifting seat 231 is fixed on the mounting frame 420. The scraper seat 220 is slidably connected to the lifting seat 231 along the vertical direction through a second linear guide 232. The differential thread transmission micrometer 233 is installed on the mounting frame 420, and the output end of the differential thread transmission micrometer 233 is fixedly connected to the scraper seat 220. The differential thread transmission micrometer 233 performs ultra-fine feeding through the differential movement of the micrometer screw thread and the nut, thereby accurately controlling the height of the scraper 210, so that the thickness of the glue after scraping is more accurate.

[0045] In a preferred embodiment, reference Figure 7 or Figure 8 An elastic buffer is arranged between the scraper seat 220 and the mounting frame 420. The elastic buffer is a spring 240. Both ends of the spring 240 are respectively connected to the scraper seat 220 and the mounting frame 420. When an external force drives the scraper 210 to move quickly, the spring 240 provides elastic force to offset part of the impact force, thereby avoiding damage to the differential thread transmission micrometer 233 and avoiding damage to the scraper 210 caused by colliding with the feeder disk 100.

[0046] In this embodiment, refer to Figure 1 , Figure 5 or Figure 6 The mounting frame 420 is provided with a receiving tray 110, and the receiving tray 110 is arranged below the feeder tray 100, and the diameter of the receiving tray 110 is larger than the diameter of the feeder tray 100. The receiving tray 110 receives the glue overflowing from the feeder tray 100 to ensure the stable operation of the device.

[0047] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A dispensing and feeding device for a chip mounter, characterized in that: include: Feeder tray, used to load glue; Glue supply component, used to inject glue into the feeder plate; The lateral movement module is used to drive the flyer to move in the horizontal direction, and includes a base, a support frame and a driving unit. The support frame is slidably connected to the base through a linear guide rail, and the driving unit is installed on the base and used to drive the support frame to move; A rotating module is installed on the supporting frame and is used to drive the feeder plate to rotate; A scraper assembly is used to scrape the glue in a feeder plate, comprising a scraper, a scraper seat, a thickness detector and a detector mounting plate. The scraper is mounted on the scraper seat, extends to the inside of the feeder plate, and the length of the scraper located on the feeder plate is greater than or equal to the diameter of the feeder plate. There is a gap between the bottom of the scraper and the surface of the feeder plate. The thickness detector is mounted on the detector mounting plate and is located above the feeder plate. The thickness detector is used to detect the thickness of the glue in the feeder plate.

2. A dispensing and feeding device for a chip mounter according to claim 1, characterized in that: The side of the scraper facing the rotation direction of the feeder disc is arranged as an arc-shaped concave surface.

3. A dispensing and feeding device for a chip mounter according to claim 1, characterized in that: The scraper assembly also includes a height adjustment mechanism, which is installed on the mounting frame. The scraper seat is installed at the output end of the height adjustment mechanism. The height adjustment mechanism is used to drive the scraper seat to rise and fall to adjust the distance between the scraper and the feeder plate.

4. The adhesive dispensing and feeding device for a chip mounter according to claim 3, characterized in that: The height adjustment mechanism includes a lifting seat and a differential thread transmission micrometer head. The lifting seat is fixed on a mounting frame. The scraper seat is slidably connected to the lifting seat along a vertical direction. The differential thread transmission micrometer head is installed on the mounting frame, and the output end of the differential thread transmission micrometer head is fixedly connected to the scraper seat.

5. The adhesive dispensing and feeding device for a chip mounter according to claim 4, characterized in that: An elastic buffer is arranged between the scraper seat and the mounting frame.

6. The adhesive dispensing and feeding device for a chip mounter according to claim 1, characterized in that: The glue supply assembly includes a glue storage container, a glue injection tube and a tube bracket. The glue storage container is installed on a mounting frame, and its discharge port is connected to the glue injection tube. The end of the glue injection tube away from the glue storage container is supported by a tube bracket connected to the mounting frame, and the discharge port of the glue injection tube is located directly above the feeder plate.

7. The adhesive dispensing and feeding device for a chip mounter according to claim 1, characterized in that: The transverse movement module also includes a positioning mechanism, which includes a rack arranged on the base and an elastic positioning member arranged on the mounting frame, the elastic positioning member includes a fixed seat, a sliding hole arranged on the fixed seat, a positioning block slidably connected to the sliding hole, an installation cavity arranged on the fixed seat and connected to the side wall of the sliding hole, a fixed block arranged in the installation cavity, an elastic sheet arranged on the fixed block and a limit block arranged on the fixed block, the side wall of the positioning block is provided with a protrusion, the protrusion extends into the installation cavity and abuts against the elastic sheet, the elastic sheet is used to provide an elastic force to make the positioning block have a tendency to move downward, and the bottom of the positioning block is provided with a tooth groove engaged with the rack.

8. The adhesive dispensing and feeding device for a chip mounter according to claim 1, characterized in that: The rotating module includes a rotating drive unit, a transmission mechanism and a rotating assembly. The rotating assembly includes a rotating seat fixedly connected to the mounting frame and a rotating shaft rotatably connected to the rotating seat. The feeder plate is fixedly connected to the top of the rotating shaft. The rotating drive unit is used to provide a torque and transmit it to the rotating shaft through the transmission mechanism to drive the rotating shaft to rotate.

9. The adhesive dispensing and feeding device for a chip mounter according to claim 8, characterized in that: The rotary drive unit includes a motor mounted on a mounting frame, the transmission mechanism includes a driving gear fixedly connected to the main shaft of the motor, a transmission gear rotatably arranged on the mounting frame, and a driven gear fixedly connected to the rotating shaft, and the transmission gear is meshedly connected with the driving gear and the driven gear.

10. The adhesive dispensing and feeding device for a chip mounter according to claim 1, characterized in that: The mounting frame is provided with a material receiving tray, which is arranged below the feeder tray, and the diameter of the material receiving tray is larger than the diameter of the feeder tray.

Images