Dispensing device for SMT (Surface Mount Technology) processing

Abstract

The invention discloses an adhesive dispensing device for SMT machining, and relates to the technical field of SMT machining, the adhesive dispensing device comprises a shell and an adhesive injection assembly, a moving assembly is arranged on the upper portion of the shell, a bottom plate is arranged below the moving assembly, and the adhesive injection assembly is arranged on one side of the bottom plate; the glue injection assembly comprises limiting rods, limiting cylinders, a base plate, a base, a mounting groove, a rotating groove, a transmission wheel, a magnetic ring, a driving wheel, a stirring motor, a clamping cavity, a clamping spring and a clamping block, one side of the bottom plate is symmetrically connected with the limiting rods, the limiting rods are sleeved with the limiting cylinders, one sides of the limiting cylinders are connected with the base plate, and the other sides of the limiting cylinders are connected with the base. A mounting groove is formed in the middle of the base. When the glue injection device is used, glue liquid can be continuously stirred, blockage caused by standing condensation of the glue liquid is avoided, during glue injection, the glue liquid can be pumped back, bubbles in the glue liquid can be removed, glue liquid leakage is avoided, and the glue barrel can be conveniently replaced after the glue liquid is dripped off.

Description

Technical Field

[0001] The invention relates to the technical field of SMT processing, in particular to a glue dispensing device for SMT processing. Background Art

[0002] SMT is surface assembly technology (surface mount technology), which is the most popular technology and process in the electronic assembly industry. SMT patch refers to the abbreviation of a series of process flows based on PCB. PCB is a printed circuit board. When performing SMT patch processing, a dispensing device is required to dispense glue on the PCB board, and then place the electronic components in the corresponding positions for patching.

[0003] When dispensing glue, the existing dispensing device may be clogged due to condensation of the glue during the static process. When dispensing glue, the glue dots may be uneven or hollow due to bubbles in the glue. There may also be dripping after stopping dispensing.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a dispensing device for SMT processing is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a dispensing device for SMT processing to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A glue dispensing device for SMT processing, comprising a shell and a glue injection assembly, a moving assembly is arranged on the upper part of the shell, and a bottom plate is arranged below the moving assembly, the glue injection assembly is arranged on one side of the bottom plate, the glue injection assembly comprises a limit rod, a limit cylinder, a pad, a base, a mounting groove, a rotating groove, a transmission wheel, a magnetic ring, a driving wheel, a stirring motor, a clamping cavity, a clamping spring and a clamping block, one side of the bottom plate is symmetrically connected to the limit rod, and the outer side of the limit rod is sleeved with the limit cylinder, one side of the limit cylinder is connected to the pad, and the other side of the limit cylinder is connected to the base, a mounting groove is opened in the middle of the base, and a rotating groove is arranged on the upper part of the mounting groove, a transmission wheel is rotatably connected in the rotating groove, and the inner side of the transmission wheel is connected to the magnetic ring, a driving wheel is arranged on one side of the transmission wheel, and a stirring motor is connected on one side of the driving wheel, a clamping cavity is symmetrically arranged on one side of the mounting groove, and a clamping spring is symmetrically connected in the clamping cavity, and the other end of the clamping spring is connected to the clamping block.

[0007] Furthermore, the driving wheel is meshed with the transmission wheel, the clamping block is slidably connected to the base through the clamping cavity, and the clamping block is elastically connected to the clamping cavity through a clamping spring, there are four clamping cavities equidistantly distributed around the installation groove, and inclined surfaces are provided on the upper and lower sides of the clamping block.

[0008] Furthermore, the glue injection assembly also includes a glue injection head, a glue inlet and a camera. The lower end of the mounting groove is connected to the glue injection head, and a glue inlet is opened at one end of the glue injection head. The base is connected to a camera on one side of the glue injection head, and a solenoid valve is arranged in the glue injection head.

[0009] Furthermore, the glue injection assembly also includes a dual-axis motor, a threaded rod and a threaded sleeve. The base plate is connected to the dual-axis motor on one side of the limit rod, the threaded rods are symmetrically connected on both sides of the dual-axis motor, the threaded sleeves are threadedly connected to the outer sides of the threaded rods, and the threaded sleeves are respectively connected to the pad and the base.

[0010] Furthermore, the glue injection assembly also includes a glue injection motor, a rotating wheel, a connecting rod, a piston plate and a limit block. The glue injection motor is connected to one side of the pad, and the glue injection motor is connected to the rotating wheel on one side. The connecting rod is rotatably connected to one side of the rotating wheel, and one end of the connecting rod is connected to the piston plate. The outer side of the connecting rod is slidably connected to the limit block, and the limit block is connected to the pad.

[0011] Furthermore, a switching motor is connected to the other side of the base plate, and a turntable is connected to one side of the switching motor. Placement rods are symmetrically connected to the turntable, and a rubber cylinder is snap-connected to one end of the placement rod. A vent is provided on one side of the outer wall of the rubber cylinder, and a snap-in groove is symmetrically provided on the other side of the outer wall. The snap-in block is snap-connected to the rubber cylinder via the snap-in groove, and an airflow sensor is arranged in the vent.

[0012] Furthermore, a through opening is opened at the bottom end of the rubber cylinder, and a blocking spring is symmetrically connected in the through opening, a sealing plate is connected to the other end of the blocking spring, and the sealing plate is clamped and connected to the rubber cylinder through the through opening, and the sealing plate is elastically connected to the through opening through the blocking spring.

[0013] Furthermore, an annular groove is provided on the inner wall of the rubber cylinder, and a magnetic ring is rotatably connected in the annular groove, a stirring rod is provided on the inner side of the magnetic ring, and the magnetic rings are magnetically connected to each other.

[0014] Furthermore, the moving component includes a first electric screw, a sliding frame, a second electric screw, a slider and a lifting rod. The first electric screw is symmetrically arranged on the upper part of the shell, and the sliding frame is threadedly connected between the first electric screws. The second electric screw is connected to the inner side of the sliding frame, and the slider is threadedly connected to the outer side of the second electric screw. The lifting rod is connected below the slider, and the sliders are slidably connected to each other in an engaging manner, and the lifting rod is connected to the base plate.

[0015] Furthermore, the lower part of the shell is symmetrically connected with slide rails, and a material placing plate is slidably engaged between the slide rails, and a material placing groove is opened in the middle of the material placing plate.

[0016] The present invention provides a glue dispensing device for SMT processing, which has the following beneficial effects: when in use, the glue liquid can be continuously stirred to avoid blockage caused by static condensation of the glue liquid, and when injecting the glue, the glue liquid can be withdrawn and the bubbles in the glue liquid can be removed to avoid dripping of the glue liquid, and it is also convenient to replace the glue cartridge after the glue liquid has dripped.

[0017] 1. When the present invention is in use, the stirring motor can drive the transmission wheel to rotate in the rotating groove through the driving wheel, thereby driving the magnetic ring to rotate in the ring groove through the magnetic ring, so that the stirring rod stirs the glue liquid, thereby preventing the glue liquid from condensing after a long period of static standing, resulting in clogging of the glue injection head and inability to dispense glue normally. When the magnetic ring drives the magnetic ring to rotate, the clamping block can limit the glue cylinder by engaging with the clamping groove, thereby preventing the glue cylinder from rotating synchronously with the magnetic ring, resulting in the stirring rod being unable to stir the glue liquid. When dispensing glue, the glue injection motor can drive the rotating wheel to rotate, thereby driving the piston plate to reciprocate in the glue cylinder through the connecting rod. The limit block can limit the connecting rod to prevent the connecting rod from deflecting when moving. After the piston plate moves from above the vent to below the vent, the airflow sensor detects that there is no air flow, and the glue injection head is The solenoid valve is opened, and as the piston plate continues to descend, the glue in the glue cylinder can enter the glue injection head from the glue inlet under the action of pressure, and then drip onto the PCB board, and when the piston plate rises, the glue in the glue injection head can be sucked back into the glue cylinder to prevent the glue from remaining in the glue injection head and causing dripping, and the bubbles in the glue can also be removed. When the piston plate passes through the vent again, the outside air enters the glue cylinder from the vent to balance the air pressure, and the air flow sensor can close the solenoid valve after detecting the air flow to prevent the glue from flowing into the glue injection head under the action of gravity after the air pressure is balanced, causing dripping. In summary, during use, the glue can be continuously stirred to prevent the glue from being blocked due to static condensation, and during glue injection, the glue can be sucked back and the bubbles in the glue can be removed to prevent the glue from dripping.

[0018] 2. After the glue in the rubber cylinder is dripped, the double-axis motor drives the threaded rod to rotate, and the threaded sleeve can be used to drive the pad and the base to move upward and downward, so that the piston plate is pulled out of the rubber cylinder and the rubber cylinder is pulled out of the installation groove. When the rubber cylinder is pulled out, the clamping block will compress the clamping spring under the action of pressure and slide into the clamping cavity to release the clamping block from the clamping groove. After the rubber cylinder is pulled out, the clamping block can rebound and reset under the action of the clamping spring, and then the switching motor is started to drive the turntable to rotate 90°, so that the rubber cylinder can be switched, so that the rubber cylinder filled with glue is placed between the pad and the base, and the empty rubber cylinder can be replenished with glue at the same time, and then the double-axis motor drives the threaded rod to rotate in the opposite direction, so that the pad can be driven by the threaded sleeve to The plate and the base are moved back, the rubber cartridge is inserted into the mounting groove and the piston plate is inserted into the rubber cartridge. When the rubber cartridge is inserted into the mounting groove, the rubber cartridge can apply force to it through the inclined surface of the clamping block, thereby pressing it into the clamping cavity and compressing the clamping spring. After the rubber cartridge is firmly inserted, the clamping block rebounds under the action of the clamping spring and is inserted into the clamping groove, thereby completing the fixation of the rubber cartridge to prevent the rubber cartridge from loosening. When inserting the rubber cartridge, the dispensing head can be inserted into the rubber cartridge through the through port, the sealing plate is lifted up and the sealing spring is stretched, so that the glue can enter the dispensing head from the glue inlet, and when the rubber cartridge is not inserted into the mounting groove, the sealing plate can close the through port under the action of the sealing spring to prevent the glue from leaking. In summary, during use, the rubber cartridge can be conveniently replaced and glue leakage can be avoided.

[0019] 3. When the present invention is in use, first put the PCB board into the material loading slot and fix it, then push the material loading plate into the shell along the slide rail, after the material loading plate is stable, the camera shoots the glue dispensing position, and the first electric screw can drive the slide frame to move horizontally in the shell, and at the same time, the second electric screw drives the slider to move longitudinally in the slide frame, and moves the glue dispensing head to just above the glue dispensing position, and the lifting rod drives the bottom plate to descend, so that the glue dispensing head approaches the PCB board, and then the glue dispensing operation can be performed. During glue dispensing, the symmetrically arranged first electric screw can maintain the stability of the slide frame to prevent the slide frame from deflecting during movement, and the engagement relationship between the slide frame and the slide frame can also limit the slider to prevent it from deflecting. The screw transmission method drives the slide frame and the slider to move, which can ensure the accuracy and stability of the movement, thereby ensuring the accuracy of the glue dispensing operation. In summary, when in use, the glue dispensing operation can be performed accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall half-section three-dimensional structure of a dispensing device for SMT processing of the present invention;

[0021] Figure 2 A schematic diagram of a cross-sectional exploded structure of a glue injection component of a glue dispensing device for SMT processing according to the present invention;

[0022] Figure 3This is a schematic diagram of the three-dimensional exploded structure of a turntable of a dispensing device for SMT processing of the present invention;

[0023] Figure 4 A schematic diagram of a half-cut three-dimensional exploded structure of a glue cylinder of a glue dispensing device for SMT processing according to the present invention;

[0024] Figure 5 This is a schematic diagram of the three-dimensional exploded structure of a moving component of a dispensing device for SMT processing of the present invention;

[0025] Figure 6 It is a schematic diagram of the overall three-dimensional structure of a dispensing device for SMT processing of the present invention;

[0026] Figure 7 It is a schematic diagram of a half-section three-dimensional structure of the shell of a glue dispensing device for SMT processing of the present invention.

[0027] In the figure: 1, housing; 2, moving assembly; 201, first electric screw; 202, sliding frame; 203, second electric screw; 204, sliding block; 205, lifting rod; 3, bottom plate; 4, glue injection assembly; 401, limit rod; 402, limit cylinder; 403, pad; 404, base; 405, installation groove; 406, rotating groove; 407, transmission wheel; 408, magnetic ring; 409, driving wheel; 410, stirring motor; 411, clamping chamber; 412, clamping spring; 413, clamping block; 414, injection Glue head; 415, glue inlet; 416, camera; 417, dual-axis motor; 418, threaded rod; 419, threaded sleeve; 420, glue injection motor; 421, rotating wheel; 422, connecting rod; 423, piston plate; 424, limit block; 5, switching motor; 6, turntable; 7, placing rod; 8, glue cylinder; 9, vent hole; 10, snap-in groove; 11, through port; 12, blocking spring; 13, sealing plate; 14, ring groove; 15, magnetic ring; 16, stirring rod; 17, slide rail; 18, material placement plate; 19, material placement trough. DETAILED DESCRIPTION

[0028] See also Figures 1 to 7The present invention provides a technical solution: a glue dispensing device for SMT processing, comprising a shell 1 and a glue injection component 4, a moving component 2 is arranged on the upper part of the shell 1, and a bottom plate 3 is arranged below the moving component 2, the glue injection component 4 is arranged on one side of the bottom plate 3, and the glue injection component 4 includes a limit rod 401, a limit cylinder 402, a pad 403, a base 404, an installation groove 405, a rotating groove 406, a transmission wheel 407, a magnetic ring 408, a driving wheel 409, a stirring motor 410, a clamping cavity 411, a clamping spring 412 and a clamping block 413, one side of the bottom plate 3 is symmetrically connected to the limit rod 401, and the limit cylinder 4 is sleeved on the outer side of the limit rod 401 02, a pad 403 is connected to one side of the limiting cylinder 402, and a base 404 is connected to the other side of the limiting cylinder 402, a mounting groove 405 is opened in the middle of the base 404, and a rotating groove 406 is arranged on the upper part of the mounting groove 405, a transmission wheel 407 is rotatably connected in the rotating groove 406, and a magnetic ring 408 is connected to the inner side of the transmission wheel 407, a driving wheel 409 is arranged on one side of the transmission wheel 407, and a stirring motor 410 is connected to one side of the driving wheel 409, a clamping cavity 411 is symmetrically arranged on one side of the mounting groove 405, and a clamping spring 412 is symmetrically connected in the clamping cavity 411, and the other end of the clamping spring 412 is connected to a clamping block 413.

[0029] See also Figures 1 to 4 The driving wheel 409 is meshed with the transmission wheel 407, the clamping block 413 is slidably connected to the base 404 through the clamping cavity 411, and the clamping block 413 is elastically connected to the clamping cavity 411 through the clamping spring 412, and the clamping cavity 411 has four equidistant circumferential distributions about the mounting groove 405, and the clamping block 413 is provided with inclined surfaces on the upper and lower sides. The glue injection component 4 also includes a glue injection head 414, a glue inlet 415 and a camera 416. The lower end of the mounting groove 405 is connected to the glue injection head 414, and the glue inlet 415 is provided at one end of the glue injection head 414. The base 404 is connected to a camera 416 on one side of the glue injection head 414, and an electromagnetic valve is provided in the glue injection head 414. The glue injection component 4 also includes a dual-axis motor 417, a threaded rod 418 and a threaded sleeve 4 19, the bottom plate 3 is connected to a double-axis motor 417 on one side of the limit rod 401, and threaded rods 418 are symmetrically connected on both sides of the double-axis motor 417. The outer side of the threaded rod 418 is threadedly connected to a threaded sleeve 419, and the threaded sleeve 419 is respectively connected to the backing plate 403 and the base 404. The glue injection assembly 4 also includes a glue injection motor 420, a rotating wheel 421, a connecting rod 422, a piston plate 423 and a limit block 424. The backing plate 403 is connected to the glue injection motor 420 on one side, and the glue injection motor 420 is connected to the rotating wheel 421 on one side, and the connecting rod 422 is rotatably connected on one side of the rotating wheel 421, and one end of the connecting rod 422 is connected to the piston plate 423, and the outer side of the connecting rod 422 is slidably connected to the limit block 424, and the limit block 424 is connected to the backing plate 403;

[0030] The specific operation is as follows. When in use, the stirring motor 410 can drive the transmission wheel 407 to rotate in the rotating groove 406 through the driving wheel 409, thereby driving the magnetic ring 15 to rotate in the ring groove 14 through the magnetic ring 408, so that the stirring rod 16 stirs the glue liquid to prevent the glue liquid from condensing after a long period of static standing, resulting in clogging of the glue injection head 414 and failure to dispense glue normally. When the magnetic ring 408 drives the magnetic ring 15 to rotate, the clamping block 413 can limit the glue cylinder 8 by engaging with the clamping groove 10 to prevent the glue cylinder 8 from rotating synchronously with the magnetic ring 15, resulting in the inability of the stirring rod 16 to stir the glue liquid. When dispensing glue, the glue injection motor 420 can drive the rotating wheel 421 to rotate, thereby driving the piston plate 423 to reciprocate in the glue cylinder 8 through the connecting rod 422. The limit block 424 can limit the connecting rod 422 to prevent the connecting rod 422 from deflecting when moving. After the piston plate 423 moves from above the vent 9 to below the vent 9, the air flow After the sensor detects that there is no air flow, the solenoid valve in the glue injection head 414 opens. As the piston plate 423 continues to descend, the glue in the glue cylinder 8 can enter the glue injection head 414 from the glue inlet 415 under the action of pressure, and then drip onto the PCB board. When the piston plate 423 rises again, the glue in the glue injection head 414 can be sucked back into the glue cylinder 8 to prevent the glue from remaining in the glue injection head 414 and causing dripping. At the same time, the bubbles in the glue can also be removed. When the piston plate 423 passes through the vent 9 again, the outside air enters the glue cylinder 8 from the vent 9 to balance the air pressure. After the air flow sensor detects air flow, the solenoid valve can be closed to prevent the glue from flowing into the glue injection head 414 under the action of gravity after the air pressure is balanced, causing dripping. In summary, during use, the glue can be continuously stirred to prevent the glue from being blocked due to static condensation. During glue injection, the glue can be sucked back and the bubbles in the glue can be removed to prevent the glue from dripping.

[0031] See also Figure 1 and Figures 3 to 7A switching motor 5 is connected to the other side of the bottom plate 3, and a turntable 6 is connected to one side of the switching motor 5. The turntable 6 is symmetrically connected with placement rods 7, and one end of the placement rod 7 is clamped and connected with a rubber cylinder 8. A vent hole 9 is opened on one side of the outer wall of the rubber cylinder 8, and a clamping groove 10 is symmetrically opened on the other side of the outer wall. The clamping block 413 is clamped and connected with the rubber cylinder 8 through the clamping groove 10. An airflow sensor is arranged in the vent hole 9. A through hole 11 is opened at the bottom end of the rubber cylinder 8, and a blocking spring 12 is symmetrically connected in the through hole 11. A sealing plate 13 is connected to the other end of the blocking spring 12, and the sealing plate 13 is clamped and connected with the rubber cylinder 8 through the through hole 11. The sealing plate 13 is elastically connected to the through hole 11 through the blocking spring 12. An annular groove 14 is opened on the inner wall of the rubber cylinder 8, and a magnetic ring 15 is rotatably connected in the annular groove 14. The inner side of the magnetic ring 15 is arranged There is a stirring rod 16, and the magnetic ring 15 is magnetically connected to the magnetic ring 408. The moving component 2 includes a first electric screw 201, a sliding frame 202, a second electric screw 203, a slider 204 and a lifting rod 205. The first electric screw 201 is symmetrically arranged on the upper part of the shell 1, and the sliding frame 202 is threadedly connected between the first electric screw 201, the second electric screw 203 is connected to the inner side of the sliding frame 202, and the slider 204 is threadedly connected to the outer side of the second electric screw 203, and the lifting rod 205 is connected below the slider 204, and the sliders 204 are slidably connected to each other, and the lifting rod 205 is connected to the bottom plate 3, and the slide rails 17 are symmetrically connected to the lower part of the shell 1, and the material placing plates 18 are slidably connected to each other between the slide rails 17, and a material placing groove 19 is opened in the middle of the material placing plates 18;

[0032] The specific operation is as follows. After the glue in the glue cylinder 8 is dripped, the dual-axis motor 417 drives the threaded rod 418 to rotate, and the threaded sleeve 419 can drive the pad 403 and the base 404 to move upward and downward, so that the piston plate 423 is pulled out of the glue cylinder 8, and the glue cylinder 8 is pulled out from the installation groove 405. When the glue cylinder 8 is pulled out, the clamping block 413 will compress the clamping spring 412 under the action of pressure and slide into the clamping cavity 411, releasing the clamping block 413 and the clamping groove 10. After the glue cylinder 8 is pulled out, the clamping block 413 can rebound and reset under the action of the clamping spring 412, and then the switching motor 5 is started, driving the turntable 6 to rotate 90°, so that the glue cylinder 8 can be switched, so that the glue cylinder filled with glue can be pulled out. 8 is placed between the pad 403 and the base 404, and the empty rubber cylinder 8 can be supplemented with glue at the same time. Then the dual-axis motor 417 drives the threaded rod 418 to rotate in the opposite direction, and the pad 403 and the base 404 can be driven to move back through the threaded sleeve 419, and the rubber cylinder 8 is inserted into the installation groove 405 and the piston plate 423 is inserted into the rubber cylinder 8. When the rubber cylinder 8 is inserted into the installation groove 405, the rubber cylinder 8 can apply force to it through the inclined surface of the clamping block 413, so as to press it into the clamping cavity 411 and compress the clamping spring 412. After the rubber cylinder 8 is firmly inserted, the clamping block 413 rebounds under the action of the clamping spring 412 and is inserted into the clamping groove 10, so that the rubber cylinder 8 can be fixed to prevent the rubber cylinder 8 from loosening. 8, the dispensing head can be inserted into the glue cylinder 8 through the through opening 11, the sealing plate 13 is lifted and the blocking spring 12 is stretched, so that the glue can enter the dispensing head from the glue inlet 415, and when the glue cylinder 8 is not inserted into the mounting groove 405, the sealing plate 13 can close the through opening 11 under the action of the blocking spring 12 to prevent the glue from leaking. In summary, when in use, the glue cylinder 8 can be easily replaced and glue leakage can be avoided. When in use, the PCB board is first placed in the material loading groove 19 and fixed, and then the material loading plate 18 is pushed into the housing 1 along the slide rail 17. After the material loading plate 18 is stable, the camera 416 shoots the dispensing position, and the first electric screw 201 can drive the slide frame 202 to move horizontally in the housing 1. At the same time, the second electric screw 203 drives the slider 204 to move longitudinally in the slide frame 202, and moves the glue dispensing head to just above the glue dispensing position. The lifting rod 205 drives the bottom plate 3 to descend, so that the glue dispensing head is close to the PCB board, and then the glue dispensing operation can be performed. During glue dispensing, the symmetrically arranged first electric screw 201 can maintain the stability of the slide frame 202 to prevent the slide frame 202 from deflecting during movement, and the engagement relationship between the slide frame 202 and the slide frame 202 can also limit the slider 204 to prevent it from deflecting. The screw transmission method drives the slide frame 202 and the slider 204 to move, which can ensure the accuracy and stability of the movement, thereby ensuring the accuracy of the glue dispensing operation. In summary, when in use, the glue dispensing operation can be performed accurately.

[0033] In summary, when using the glue dispensing device for SMT processing, first put the PCB board into the material placement groove 19 and fix it, then push the material placement plate 18 into the shell 1 along the slide rail 17, and after the material placement plate 18 is stable, the camera 416 takes a picture of the glue dispensing position, and the first electric screw 201 can drive the slide frame 202 to move horizontally in the shell 1, and at the same time, the second electric screw 203 drives the slider 204 to move longitudinally in the slide frame 202, and moves the glue dispensing head to the top of the glue dispensing position, and the lifting rod 205 drives the bottom plate 3 to descend, so that the glue dispensing head is close to the PCB board, and then the glue dispensing operation can be carried out. During glue dispensing, the symmetrically arranged first electric screw 201 can keep the slide frame 202 stable to prevent the slide frame 202 from moving. Deflection, and the engagement relationship between the slide frame 202 and the slide frame 202 can also limit the slider 204 to prevent it from deflecting. The screw transmission method drives the slide frame 202 and the slider 204 to move, which can ensure the accuracy and stability of the movement, thereby ensuring the accuracy of the dispensing operation. During the dispensing process, the stirring motor 410 can drive the transmission wheel 407 to rotate in the rotating groove 406 through the driving wheel 409, thereby driving the magnetic ring 15 to rotate in the ring groove 14 through the magnetic ring 408, so that the stirring rod 16 stirs the glue liquid to prevent the glue liquid from condensing under long-term standing, resulting in clogging of the glue injection head 414 and unable to dispense glue normally. When the magnetic ring 408 drives the magnetic ring 15 to rotate, the clamping block 413 can limit the glue cylinder 8 by engaging with the clamping groove 10. The control is to prevent the glue cylinder 8 from rotating synchronously with the magnetic ring 15, so that the stirring rod 16 cannot stir the glue liquid. When dispensing glue, the glue injection motor 420 can drive the rotating wheel 421 to rotate, thereby driving the piston plate 423 to reciprocate in the glue cylinder 8 through the connecting rod 422. The limit block 424 can limit the connecting rod 422 to prevent the connecting rod 422 from deflecting when moving. After the piston plate 423 moves from above the vent 9 to below the vent 9, the air flow sensor detects that there is no air flow, and the solenoid valve in the glue injection head 414 opens. As the piston plate 423 continues to descend, the glue in the glue cylinder 8 can enter the glue injection head 414 from the glue inlet 415 under the action of pressure, and then drip onto the PCB board. When the piston plate 423 rises again, it can The glue in the glue injection head 414 is pumped back into the glue cylinder 8 to prevent the glue from remaining in the glue injection head 414 and causing dripping. At the same time, the bubbles in the glue can also be removed. When the piston plate 423 passes through the vent hole 9 again, the outside air enters the glue cylinder 8 from the vent hole 9 to balance the air pressure. After the air flow sensor detects the air flow, the solenoid valve can be closed to prevent the glue from flowing into the glue injection head 414 under the action of gravity after the air pressure is balanced and causing dripping. After the glue in the glue cylinder 8 drips out, the dual-axis motor 417 drives the threaded rod 418 to rotate, which can drive the pad 403 and the base 404 to move upward and downward through the threaded sleeve 419, thereby pulling the piston plate 423 out of the glue cylinder 8, and pulling the glue cylinder 8 out of the mounting groove 405. When the glue cylinder 8 is pulled out,The clamping block 413 will compress the clamping spring 412 under the action of pressure and slide it into the clamping cavity 411, so as to release the clamping block 413 from the clamping groove 10. After the rubber cylinder 8 is pulled out, the clamping block 413 can rebound and reset under the action of the clamping spring 412, and then the switching motor 5 is started to drive the turntable 6 to rotate 90 degrees, so that the rubber cylinder 8 can be switched, so that the rubber cylinder 8 filled with glue liquid can be placed between the pad 403 and the base 404, and the empty rubber cylinder 8 can be replenished with glue liquid, and then the dual-axis motor 417 drives the threaded rod 418 to rotate in the opposite direction, so as to drive the pad 403 and the base 404 to move back through the threaded sleeve 419, so that the rubber cylinder 8 is inserted into the installation groove 405 and the piston plate 423 is inserted into the piston plate 423. Insert the rubber cartridge 8. When the rubber cartridge 8 is inserted into the mounting groove 405, the rubber cartridge 8 can apply force to it through the inclined surface of the clamping block 413, thereby pressing it into the clamping cavity 411 and compressing the clamping spring 412. After the rubber cartridge 8 is firmly inserted, the clamping block 413 rebounds under the action of the clamping spring 412 and is inserted into the clamping groove 10, so that the rubber cartridge 8 can be fixed to prevent the rubber cartridge 8 from loosening. When inserting the rubber cartridge 8, the dispensing head can be inserted into the rubber cartridge 8 through the through port 11, the sealing plate 13 is lifted and the blocking spring 12 is stretched, so that the glue can enter the dispensing head from the glue inlet 415. When the rubber cartridge 8 is not inserted into the mounting groove 405, the sealing plate 13 can close the through port 11 under the action of the blocking spring 12 to prevent the glue from leaking.

[0034] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A dispensing device for SMT processing, characterized in that: The invention comprises a housing (1) and a glue injection assembly (4), wherein a moving assembly (2) is arranged on the upper part of the housing (1), and a bottom plate (3) is arranged below the moving assembly (2), and the glue injection assembly (4) is arranged on one side of the bottom plate (3), and the glue injection assembly (4) comprises a limiting rod (401), a limiting cylinder (402), a pad (403), a base (404), an installation groove (405), a rotating groove (406), a transmission wheel (407), a magnetic ring (408), a driving wheel (409), a stirring motor (410), a clamping cavity (411), a clamping spring (412) and a clamping block (413), and one side of the bottom plate (3) is symmetrically connected to the limiting rod (401), and the limiting cylinder (402) is sleeved on the outer side of the limiting rod (401), and the limiting cylinder (402) is sleeved on the outer side of the limiting cylinder (413). 02) is connected to a pad (403) on one side, and a base (404) is connected to the other side of the limiting cylinder (402), a mounting groove (405) is provided in the middle of the base (404), and a rotating groove (406) is provided on the upper part of the mounting groove (405), a transmission wheel (407) is rotatably connected in the rotating groove (406), and a magnetic ring (408) is connected to the inner side of the transmission wheel (407), a driving wheel (409) is provided on one side of the transmission wheel (407), and a stirring motor (410) is connected to one side of the driving wheel (409), a clamping cavity (411) is symmetrically provided on one side of the mounting groove (405), and a clamping spring (412) is symmetrically connected in the clamping cavity (411), and the other end of the clamping spring (412) is connected to a clamping block (413).

2. A dispensing device for SMT processing according to claim 1, characterized in that: The driving wheel (409) is meshed with the transmission wheel (407), the clamping block (413) is slidably connected to the base (404) via the clamping cavity (411), and the clamping block (413) is elastically connected to the clamping cavity (411) via a clamping spring (412), four clamping cavities (411) are equidistantly distributed around the installation groove (405), and inclined surfaces are arranged on the upper and lower sides of the clamping block (413).

3. A dispensing device for SMT processing according to claim 1, characterized in that: The glue injection assembly (4) further comprises a glue injection head (414), a glue inlet (415) and a camera (416); the lower end of the mounting groove (405) is connected to the glue injection head (414), and one end of the glue injection head (414) is provided with a glue inlet (415); the base (404) is connected to a camera (416) on one side of the glue injection head (414); and a solenoid valve is arranged in the glue injection head (414).

4. The glue dispensing device for SMT processing according to claim 1, characterized in that: The glue injection assembly (4) also includes a dual-axis motor (417), a threaded rod (418) and a threaded sleeve (419); the bottom plate (3) is connected to the dual-axis motor (417) on one side of the limiting rod (401); the dual-axis motor (417) is symmetrically connected to the threaded rod (418) on both sides; the threaded sleeve (419) is threadedly connected to the outer side of the threaded rod (418); and the threaded sleeve (419) is respectively connected to the backing plate (403) and the base (404).

5. The glue dispensing device for SMT processing according to claim 1, characterized in that: The glue injection assembly (4) further comprises a glue injection motor (420), a rotating wheel (421), a connecting rod (422), a piston plate (423) and a limit block (424); one side of the backing plate (403) is connected to the glue injection motor (420), and one side of the glue injection motor (420) is connected to the rotating wheel (421); one side of the rotating wheel (421) is rotatably connected to the connecting rod (422), and one end of the connecting rod (422) is connected to the piston plate (423); the outer side of the connecting rod (422) is slidably connected to the limit block (424), and the limit block (424) is connected to the backing plate (403).

6. The glue dispensing device for SMT processing according to claim 1, characterized in that: The other side of the bottom plate (3) is connected to a switching motor (5), and one side of the switching motor (5) is connected to a turntable (6). The turntable (6) is symmetrically connected to a placement rod (7) around the periphery, and one end of the placement rod (7) is snap-connected to a rubber cylinder (8). A vent hole (9) is provided on one side of the outer wall of the rubber cylinder (8), and a snap-connecting groove (10) is symmetrically provided on the other side of the outer wall. The snap-connecting block (413) is snap-connected to the rubber cylinder (8) via the snap-connecting groove (10), and an airflow sensor is provided in the vent hole (9).

7. A dispensing device for SMT processing according to claim 6, characterized in that: The bottom end of the rubber cylinder (8) is provided with a through opening (11), and a blocking spring (12) is symmetrically connected inside the through opening (11); the other end of the blocking spring (12) is connected to a sealing plate (13), and the sealing plate (13) is snap-connected to the rubber cylinder (8) through the through opening (11); the sealing plate (13) is elastically connected to the through opening (11) through the blocking spring (12).

8. The glue dispensing device for SMT processing according to claim 7, characterized in that: The inner wall of the rubber cylinder (8) is provided with an annular groove (14), and a magnetic ring (15) is rotatably connected in the annular groove (14). A stirring rod (16) is arranged inside the magnetic ring (15), and the magnetic ring (15) and the magnetic ring (408) are magnetically connected.

9. The glue dispensing device for SMT processing according to claim 1, characterized in that: The moving assembly (2) comprises a first electric screw (201), a sliding frame (202), a second electric screw (203), a slider (204) and a lifting rod (205); the first electric screw (201) is symmetrically arranged on the upper part of the housing (1); the sliding frame (202) is threadedly connected between the first electric screw (201); the inner side of the sliding frame (202) is connected to the second electric screw (203); the outer side of the second electric screw (203) is threadedly connected to the slider (204); the lower side of the slider (204) is connected to the lifting rod (205); the sliders (204) are engaged and slidably connected with each other; and the lifting rod (205) is connected to the bottom plate (3).

10. The glue dispensing device for SMT processing according to claim 1, characterized in that: The lower part of the housing (1) is symmetrically connected with slide rails (17), and a material placement plate (18) is slidably engaged between the slide rails (17), and a material placement groove (19) is provided in the middle of the material placement plate (18).

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