Chip mounter and its head

Abstract

The present invention relates to a chip mounter and its head, the head includes a mounting frame, a turret mechanism, a nozzle assembly and an adjustment mechanism, the turret mechanism is arranged on the mounting frame, the nozzle assembly is arranged on the turret mechanism and multiple nozzle assemblies are arranged along the circumference of the turret mechanism, the turret mechanism can drive all the nozzle assemblies to rotate relative to the mounting frame, the adjustment mechanism includes a lifting assembly and an adjustment assembly arranged on the mounting frame, the lifting assembly is used to drive at least one nozzle assembly to move relative to the mounting frame to cooperate with the adjustment assembly or disengage from the adjustment assembly, when the nozzle assembly cooperates with the adjustment assembly, the adjustment assembly drives the nozzle assembly to rotate relative to the turret mechanism to adjust the angle of the nozzle assembly. Since multiple nozzle assemblies are arranged along the circumference of the turret mechanism, compared with the solution of arranging the nozzle assemblies along a straight line, the size of the entire head in the width direction can be effectively reduced, thereby improving the compactness and integration of the head, thereby improving the compactness and integration of the chip mounter.

Description

Technical Field

[0001] The present invention relates to the field of chip placement technology, in particular to a chip placement machine and a head thereof. Background Art

[0002] Automatic placement machines are used to place electronic components at high speed and precision. They are the most critical and complex equipment in the entire SMT (Surface Mounted Technology) production.

[0003] In the related art, as disclosed in patent CN211531682U, the head of the placement machine includes a plurality of suction nozzles arranged along the feeding direction. When the number of suction nozzles increases, the width of the entire head will increase significantly, which is not conducive to the compact design of the entire machine. Summary of the invention

[0004] The embodiment of the present invention provides a chip mounter and a head thereof to improve the structural compactness of the chip mounter.

[0005] A machine head, the machine head is used for a chip mounter, and the machine head comprises:

[0006] Mounting frame;

[0007] A turret mechanism, arranged on the mounting frame;

[0008] A nozzle assembly, which is disposed on the turret mechanism and is arranged in a plurality along the circumference of the turret mechanism, wherein the turret mechanism can drive all of the nozzle assemblies to rotate relative to the mounting frame; and

[0009] The adjustment mechanism includes a lifting assembly and an adjustment assembly arranged on the mounting frame, wherein the lifting assembly is used to drive at least one of the suction nozzle assemblies to move relative to the mounting frame to cooperate with or disengage from the adjustment assembly, and when the suction nozzle assembly cooperates with the adjustment assembly, the adjustment assembly drives the suction nozzle assembly to rotate relative to the turret mechanism to adjust the angle of the suction nozzle assembly.

[0010] In one embodiment, the turret mechanism includes a first driver connected to the mounting frame, a first double gear assembly linked to the output end of the first driver, and a support linked to the first double gear assembly, the support is rotatably provided on the mounting frame, the nozzle assembly is slidably fitted with the support and is arranged along the circumference of the support; the first driver drives the support and all the nozzle assemblies to rotate relative to the mounting frame through the first double gear assembly.

[0011] In one embodiment, the turret mechanism includes a first driving gear linked to the output end of the first driver, the first double gear assembly includes a first gear and a second gear fixed coaxially, and a fastener connected to the first gear and the second gear, the first driving gear is meshed with the first gear and the second gear respectively; the first gear is provided with an adjustment hole, the adjustment hole extends from one side of the first gear to the other side opposite to the first gear, the fastener is passed through the adjustment hole and connected to the second gear to achieve a fixed connection between the first gear and the second gear; the adjustment hole is used to adjust the relative position of the first gear and the second gear, so as to adjust the meshing clearance between the first driving gear and the first gear and the second gear when the first driving gear drives the first double gear assembly to rotate forward and reverse.

[0012] In one embodiment, the first double gear assembly includes an elastic member, the first gear is provided with a receiving groove connected to the adjustment hole, the elastic member is received in the receiving groove and one end is abutted against the first gear, and the other end of the elastic member is abutted against the fastener, and after the first gear and the second gear rotate relative to each other, the deformation amount of the elastic member changes accordingly.

[0013] In one embodiment, the adjustment assembly includes a second driver connected to the mounting frame, a second double gear assembly linked to the output end of the second driver and coaxially arranged with the first double gear assembly; the nozzle assembly includes a rod slidably matched with the support, a suction head connected to one end of the rod, and a linkage wheel connected to the other end of the rod; the lifting assembly is used to drive any of the nozzle assemblies to move axially along the second double gear assembly to switch between a first position and a second position relative to the second double gear assembly; in the first position, the linkage wheel is engaged with the second double gear assembly, and the second driver can drive the nozzle assembly linked to the second double gear assembly to rotate relative to the support through the second double gear assembly; in the second position, the linkage wheel is disengaged from the second double gear assembly.

[0014] In one embodiment, the suction nozzle assembly includes a shift block, and the shift block and the linkage wheel are arranged at the same end of the rod; the lifting assembly includes a third driver connected to the mounting frame, a mounting table linked to the output end of the third driver, and a roller rotatably connected to the mounting table, and the mounting table has a flange; when the suction nozzle assembly is in the second position, the first driver drives the shift block to rotate relative to the mounting frame to between the roller and the flange through the first double gear assembly, and the third driver drives the suction nozzle assembly to the first position through the flange, and the third driver can also drive the suction nozzle assembly to the second position through the roller.

[0015] In one embodiment, the nozzle assemblies are evenly spaced along the circumference of the support, and the moving direction of the rod is parallel to the axial direction of the second double gear assembly, the first driver, the second driver, and the third driver are arranged on the same side of the mounting frame, and the output shaft of the first driver, the output shaft of the second driver, and the output shaft of the third driver are parallel to each other.

[0016] In one embodiment, the machine head includes a release assembly, the turret mechanism includes a plurality of paddles slidably engaged with the support, and the plurality of paddles correspond one-to-one to the plurality of nozzle assemblies; the lifting assembly can also drive any of the nozzle assemblies to move axially along the second double gear assembly to a third position, the second position being between the first position and the third position; in the third position, the release assembly drives the paddle to move so that the nozzle releases the adsorbed surface mount component.

[0017] In one embodiment, the release assembly includes a fourth driver, an eccentric block linked to the output end of the fourth driver, a first rotating wheel rotatably connected to the eccentric block, a lifting block linked to the first rotating wheel, and a second rotating wheel and a third rotating wheel rotatably connected to the lifting block; the lifting block is provided with a limiting groove, and the first rotating wheel can be rolled in the limiting groove; in the second position, the first driver drives the paddle to rotate relative to the mounting frame to between the second rotating wheel and the third rotating wheel through the first double gear assembly, the fourth driver drives the lifting block to move axially along the second double gear assembly through the first rotating wheel connected to the eccentric block, and the second rotating wheel drives the paddle to move so that the suction head releases the adsorbed surface mount component; the fourth driver can also drive the paddle back to its position through the third rotating wheel linked to the eccentric block.

[0018] A chip placement machine comprises a frame and a head as described in any one of the above items, wherein the mounting frame is movably arranged on the frame. The above head can be used for a chip placement machine, and the head comprises a mounting frame, a turret mechanism, a nozzle assembly and an adjustment mechanism, wherein the turret mechanism is arranged on the mounting frame, the nozzle assembly is arranged on the turret mechanism and a plurality of nozzle assemblies are arranged along the circumference of the turret mechanism, the turret mechanism can drive all the nozzle assemblies to rotate relative to the mounting frame, the adjustment mechanism comprises a lifting assembly and an adjustment assembly arranged on the mounting frame, the lifting assembly is used to drive at least one nozzle assembly to move relative to the mounting frame to cooperate with or disengage from the adjustment assembly, and when the nozzle assembly cooperates with the adjustment assembly, the adjustment assembly drives the nozzle assembly to rotate relative to the turret mechanism to adjust the angle of the nozzle assembly. Since multiple nozzle assemblies are arranged along the circumference of the turret mechanism, the turret mechanism can drive all nozzle assemblies to rotate relative to the mounting frame, making it convenient for the nozzle assemblies to absorb the surface mount components on the loading mechanism of the placement machine. When the adjustment assembly cooperates with the nozzle assembly, it can at least adjust the angle of a single nozzle assembly relative to the turret mechanism, and then adjust the angle of the surface mount components adsorbed thereon to meet the requirements of placement processing. Compared with the solution of arranging the nozzle assemblies along a straight line, the size of the entire machine head in the width direction can be effectively reduced, thereby improving the compactness and integration of the machine head, thereby improving the compactness and integration of the placement machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a head of a chip mounter according to an embodiment;

[0021] Figure 2 for Figure 1 The enlarged schematic diagram of point A of the head of the placement machine shown;

[0022] Figure 3 A schematic diagram of the cooperation between the output end of the second driver of the handpiece and the first double gear assembly according to an embodiment;

[0023] Figure 4 An exploded view of a first double gear assembly of a handpiece according to an embodiment;

[0024] Figure 5 for Figure 1 The enlarged schematic diagram of position B of the head of the placement machine shown;

[0025] Figure 6 It is a partial schematic diagram of the head of a chip mounter according to an embodiment;

[0026] Figure 7 It is a schematic diagram of the cooperation between the release assembly and the paddle of the machine head according to one embodiment;

[0027] Figure 8 for Figure 1 The enlarged schematic diagram of the C position of the head of the placement machine shown;

[0028] Fig. 9 for Figure 7 An enlarged schematic diagram of point D where the release assembly of the machine head cooperates with the paddle is shown.

[0029] Reference numerals:

[0030] The machine head 10, the mounting frame 100, the turret mechanism 200, the first driver 210, the first driving gear 211, the first double gear assembly 220, the first gear 221, the adjustment hole 221a, the accommodating groove 221b, the second gear 223, the fastener 225, the elastic member 227, the support 230, the paddle 240, the nozzle assembly 300, the rod 310, the suction head 320, the linkage wheel 330, the paddle block 340, the adjustment mechanism 400, the lifting assembly 410, the third driver 411, the mounting platform 413, the flange 4131, the roller 415, the adjustment assembly 420, the second driver 421, the second driving gear 4211, the second double gear assembly 423, the release assembly 500, the fourth driver 510, the eccentric block 520, the first rotating wheel 530, the lifting block 540, the limiting groove 540a, the second rotating wheel 550, and the third rotating wheel 560. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] refer to Figure 1 The present invention discloses a head 10 of a chip mounter, which is movably arranged on a frame of the chip mounter (not shown). The chip mounter can be used to mount surface mount components on a circuit substrate. Surface mount components include but are not limited to lamp beads. During the mounting process, the loading mechanism of the chip mounter drives the circuit substrate to move to the mounting area, and the head 10 can move relative to the frame, and after sucking the surface mount components, the surface mount components are mounted on the circuit substrate in the mounting area.

[0035] The machine head 10 includes a mounting frame 100, a turret mechanism 200, a nozzle assembly 300 and an adjustment mechanism 400. The mounting frame 100 is used to provide rigid support for the entire structure. It can be an integral structure such as a casting or forging structure, so as to serve as an assembly reference for the turret mechanism 200, the nozzle assembly 300 and the adjustment mechanism 400, thereby improving assembly efficiency and assembly positioning accuracy. The mounting frame 100 is generally movably arranged on the frame, for example, the mounting frame 100 is driven to reciprocate along the guide rail of the frame by a belt transmission mechanism. The nozzle assembly 300 is arranged on the turret mechanism 200 and a plurality of nozzle assemblies 300 are arranged along the circumference of the turret mechanism 200. The turret mechanism 200 is arranged on the mounting frame 100 and can drive all the nozzle assemblies 300 to rotate relative to the mounting frame 100, that is, when the turret mechanism 200 is working, all the nozzle assemblies 300 arranged on the turret mechanism 200 move synchronously relative to the mounting frame 100.

[0036] The loading mechanism of the SMT machine usually uses a conveyor belt to transfer the circuit substrate, and the surface mount components are generally transferred by a feeder. After the head 10 moves relative to the guide rail of the frame, the nozzle assembly 300 can absorb the surface mount components from the feeding position of the feeder. Driven by the turret mechanism 200, each nozzle assembly 300 can rotate relative to the mounting frame 100 to correspond to the feeding position of the feeder, and then absorb the surface mount components from the feeder, that is, all the nozzle assemblies 300 of the head 10 can successively absorb the surface mount components from the feeding position of the feeder, so that multiple surface mount components can be carried at a time and then moved to the SMT area for mounting processing, thereby improving the efficiency of mounting.

[0037] Exemplarily, in one embodiment, one turret mechanism 200 is provided with 24 suction nozzle assemblies 300, and all the suction nozzle assemblies 300 are evenly arranged at circumferential intervals along the turret mechanism 200, that is, each time the head 10 moves to the feeding position of the feeder, it can suck 24 surface mount components and then move to the patch area for mounting, thereby obtaining a relatively high mounting efficiency.

[0038] Also refer to Figure 2 and Figure 3 , the turret mechanism 200 may include a first driver 210 connected to the mounting frame 100, a first double gear assembly 220 linked to the output end of the first driver 210, and a support 230 linked to the first double gear assembly 220. The support 230 is generally cylindrical and rotatably arranged on the mounting frame 100. The nozzle assembly 300 is slidably matched with the support 230 and is evenly arranged along the circumferential interval of the support 230. The axis of the nozzle assembly 300 may be parallel to the axis of the first double gear assembly 220, that is, parallel to the rotation axis of the support 230 relative to the mounting frame 100. The distance between the axis of all the nozzle assemblies 300 and the axis of the support 230 may be substantially equal, that is, the axis of all the nozzle assemblies 300 may pass through a concentric circle concentric with the rotation center of the support 230. The first driver 210 may be a servo motor, which may drive the support 230 and all the nozzle assemblies 300 to rotate relative to the mounting frame 100 through the first double gear assembly 220. Specifically, the first driver 210 can be vertically mounted on the mounting frame 100, and the axis of its output shaft can be parallel to the rotation axis of the first double gear assembly 220. In this embodiment, the output shaft of the first driver 210 can be directly meshed with the first double gear assembly 220 through the first driving gear 211 to shorten the intermediate transmission link and reduce the cumulative error of the transmission.

[0039] Specifically, refer to Figure 4 The first double gear assembly 220 may include a first gear 221 and a second gear 223 fixed coaxially, and a fastener 225 connected to the first gear 221 and the second gear 223, and the first driving gear 211 is meshed with the first gear 221 and the second gear 223 respectively. The first gear 221 is provided with an adjustment hole 221a, and the cross section of the adjustment hole 221a may be waist-shaped. The adjustment hole 221a extends from one side of the first gear 221 to the other side opposite to the first gear 221. The fastener 225 is penetrated through the adjustment hole 221a and connected to the second gear 223 to achieve a fixed connection between the first gear 221 and the second gear 223. The adjustment hole 221a is used to adjust the relative position of the first gear 221 and the second gear 223, so as to adjust the meshing clearance between the first driving gear 211 and the first gear 221, and between the first driving gear 211 and the second gear 223 when the first driving gear 211 drives the first double gear assembly 220 to rotate forward and reverse.

[0040] For example, in one embodiment, the first gear 221 is provided with four spaced adjustment holes 221a, and the four adjustment holes 221a are evenly arranged at circumferential intervals on the first gear 221, that is, the central angle between adjacent adjustment holes 221a is about 90 degrees. The central angle corresponding to the two ends of each adjustment hole 221a can be 5 degrees to 10 degrees, thereby limiting the rotation angle range of the first gear 221 relative to the second gear 223. For example, when the central angle corresponding to the two ends of each adjustment hole 221a is 5 degrees, the rotation angle range of the first gear 221 relative to the second gear 223 is 0-5 degrees.

[0041] A fastener 225 is correspondingly provided in each adjustment hole 221a. The fastener 225 can be inserted into the adjustment hole 221a and threadedly connected to the second gear 223, so as to achieve relative fixation of the positions of the first gear 221 and the second gear 223, and the fastener 225 can be loosened from the second gear 223 more conveniently, so as to facilitate driving the first gear 221 to rotate a small angle (for example, 1 degree to 5 degrees) relative to the second gear 223 so that the gear teeth of the first gear 221 and the gear teeth of the second gear 223 are misaligned, and then the first gear 221 is reliably fixed to the second gear 223, so as to prevent the first gear 221 and the second gear 223 from loosening and reducing the mounting accuracy of the machine head 10 during the process in which the first driving gear 211 drives the first double gear assembly 220 to rotate relative to the mounting frame 100.

[0042] During the patch process, the support 230 of the turret mechanism 200 must be able to rotate both forward and reverse relative to the mounting frame 100, so as to facilitate the adjustment of the position of the nozzle assembly 300 relative to the patch area, and then adjust the position of the surface mount components adsorbed thereon relative to the patch area. When a single gear is meshed with the first drive gear 211, due to the existence of the meshing clearance, when the meshing clearance of the support 230 driven by the first drive gear 211 to rotate forward meets the requirements, during the starting time period when the first drive gear 211 drives the support 230 to reverse, the meshing clearance between the single gear and the first drive gear 211 is usually too large, causing the position of the nozzle assembly 300 to shift, reducing the accuracy of the placement positioning. By adjusting the relative position of the first gear 221 and the second gear 223 so that the gear teeth of the first gear 221 and the gear teeth of the second gear 223 are offset by a certain angle, the meshing error of the forward and reverse rotation of the first driving gear 211 can be compensated. In the starting time period when the first driving gear 211 drives the support 230 to switch between forward and reverse rotation, the meshing clearance between the first driving gear 211 and the first double gear assembly 220 meets the requirements, thereby preventing the position of the suction nozzle assembly 300 from being offset and ensuring the accuracy of the mounting positioning.

[0043] refer to Figure 4Further, the first double gear assembly 220 includes an elastic member 227, the first gear 221 is provided with a receiving groove 221b communicating with the adjustment hole 221a, the elastic member 227 is received in the receiving groove 221b and one end abuts against the first gear 221, and the other end of the elastic member 227 abuts against the fastener 225, and after the first gear 221 and the second gear 223 rotate relative to each other, the deformation amount of the elastic member 227 changes accordingly. The elastic member 227 can be a spring or an elastic column, and the number thereof is equal to and corresponds to the number of the adjustment holes 221a, and the number of the receiving grooves 221b is also equal to and corresponds to the number of the adjustment holes 221a. When the positions of the first gear 221 and the second gear 223 are relatively fixed, the elastic member 227 can be in a compressed and deformed state. At the moment when the first driving gear 211 drives the support 230 to switch between forward and reverse rotation, the impact of the gear meshing can be absorbed by the elastic member 227, thereby reducing vibration and noise, and ensuring the placement positioning accuracy of the nozzle assembly 300. In addition, the elastic member 227 can also maintain the fastener 225's pressing effect on the first gear 221 and the second gear 223, preventing the fastener 225 from easily loosening from the first gear 221, thereby ensuring the working reliability of the head 10.

[0044] refer to Figure 5 and Figure 6 , and combined with Figure 1 The adjustment mechanism 400 includes a lifting assembly 410 and an adjustment assembly 420 disposed on the mounting frame 100. The lifting assembly 410 is used to drive at least one nozzle assembly 300 to move relative to the mounting frame 100 to cooperate with or disengage from the adjustment assembly 420. When the nozzle assembly 300 cooperates with the adjustment assembly 420, the adjustment assembly 420 drives the nozzle assembly 300 to rotate relative to the turret mechanism 200 to adjust the angle of the nozzle assembly 300.

[0045] Specifically, refer to Figure 6 The adjustment assembly 420 includes a second driver 421 connected to the mounting frame 100, and a second double gear assembly 423 that is linked to the output end of the second driver 421 and is coaxially arranged with the first double gear assembly 220. The nozzle assembly 300 includes a rod 310 that is slidably matched with the support 230, a suction head 320 ( Figure 1), and a linkage wheel 330 connected to the other end of the rod 310. The moving direction of the rod 310 is parallel to the axial direction of the second double gear assembly 423, or is arranged parallel to the axial direction of the first double gear assembly 220. The lifting assembly 410 is used to drive any suction nozzle assembly 300 to move along the axial direction of the second double gear assembly 423 to switch between the first position and the second position relative to the second double gear assembly 423. In the first position, the linkage wheel 330 is engaged with the second double gear assembly 423, and the second driver 421 can drive the suction nozzle assembly 300 linked with the second double gear assembly 423 to rotate relative to the support 230 through the second double gear assembly 423; in the second position, the linkage wheel 330 is disengaged from the second double gear assembly 423, such as Figure 6 shown.

[0046] The second driver 421 can be a servo motor, which can drive the linkage wheel 330 of the nozzle assembly 300 to rotate through the meshing transmission of the second driving gear 4211 and the second double gear assembly 423, and then drive the suction head 320 of the same nozzle assembly 300 to rotate, so as to adjust the angle of the surface mount component adsorbed on the suction head 320 to adapt to the mounting position on the circuit substrate. The second double gear assembly 423 can be rotatably matched with the support 230, for example, the second double gear assembly 423 and the support 230 are rotatably connected through a bearing. When the first driver 210 drives the support 230 and all the nozzle assemblies 300 connected to the support 230 to rotate relative to the mounting frame 100 through the first double gear assembly 220, the position of the second double gear assembly 423 and the mounting frame 100 can remain unchanged, that is, the position of the second double gear assembly 423 is maintained by the meshing action of the second driving gear 4211 and the second double gear assembly 423, and the holding torque of the output shaft of the second driver 421 in the non-working state. With this structural setting, the second driver 421 is started only when the angle of the suction head 320 needs to be adjusted through the cooperation of the second double gear assembly 423 and the linkage wheel 330. The second driver 421 does not have to work continuously, thereby reducing the energy consumption of the head 10 and ensuring the service life of the head 10.

[0047] Similar to the installation of the first driver 210, the second driver 421 can also be vertically installed on the mounting frame 100, and the axis of its output shaft can be parallel to the rotation axis of the first double gear assembly 220. In this embodiment, the output shaft of the second driver 421 can be directly meshed with the second double gear assembly 423 through the second driving gear 4211 to shorten the intermediate transmission link and reduce the cumulative error of the transmission.

[0048] The structure and working principle of the second double gear assembly 423 are similar to those of the first double gear assembly 220. The second double gear assembly 423 may also include structures similar to and corresponding to the first gear 221, the second gear 223, the fastener 225, the elastic member 227, the adjustment hole 221a, and the receiving groove 221b. During the starting time period when the second driving gear 4211 drives the second double gear assembly 423 to switch between forward and reverse rotation, the structure of the second double gear assembly 423 ensures that the meshing clearance between the second driving gear 4211 and the second double gear assembly 423 meets the requirements, which can prevent the position of the suction head 320 from being offset, thereby ensuring the accuracy of the placement positioning, which will not be described in detail here.

[0049] Continue to refer Figure 5 The nozzle assembly 300 includes a shifting block 340, and the shifting block 340 and the linkage wheel 330 are arranged at the same end of the rod 310. The lifting assembly 410 includes a third driver 411 ( Figure 1 ), a mounting platform 413 linked to the output end of the third driver 411, and a roller 415 rotatably connected to the mounting platform 413, the mounting platform 413 having a flange 4131. The nozzle assembly 300 is Figure 5 In the second position shown, the first driver 210 drives the shifting block 340 of the nozzle assembly 300 to rotate relative to the mounting frame 100 to between the roller 415 and the flange 4131 through the first double gear assembly 220, and the third driver 411 drives the nozzle assembly 300 to move upward to the first position by pushing the shifting block 340 through the flange 4131. The third driver 411 can also drive the nozzle assembly 300 to move downward to the second position by pushing the shifting block 340 through the roller 415. The setting of the roller 415 can reduce friction and reduce wear of the shifting block 340 through the rolling contact between the roller 415 and the shifting block 340 when the shifting block 340 enters and exits the space between the roller 415 and the flange 4131.

[0050] The third driver 411 may also be a servo motor, and its installation method may be similar to that of the first driver 210, for example, it may be vertically installed on the mounting frame 100, and the axis of its output shaft may be parallel to the rotation axis of the first double gear assembly 220. In particular, the first driver 210, the second driver 421, and the third driver 411 are arranged on the same side of the mounting frame 100, and the output shafts of the first driver 210, the second driver 421, and the third driver 411 are parallel to each other. This structural arrangement can use one side of the mounting frame 100 as an assembly reference to ensure the assembly accuracy of the first driver 210, the second driver 421, and the third driver 411 on the mounting frame 100. In some embodiments, the output shaft of the third driver 411 may be connected to the screw of the ball screw mechanism, and the nut of the ball screw mechanism is fixedly connected to the mounting platform 413. When the third driver 411 drives the screw to rotate, the mounting platform 413 moves along the length extension direction of the screw to achieve the lifting movement in the axial direction of the first double gear assembly 220. The ball screw mechanism can achieve relatively high control accuracy.

[0051] Further, refer to Figure 7 , Figure 8 and Fig. 9 The machine head 10 includes a release assembly 500, and the turret mechanism 200 includes a plurality of paddles 240 that are slidably matched to the support 230, and the plurality of paddles 240 correspond to the plurality of nozzle assemblies 300 one by one. The lifting assembly 410 can also drive any nozzle assembly 300 to move to a third position along the axial direction of the second double gear assembly 423, and the second position is located between the first position and the third position. At the third position, the release assembly 500 drives the paddle 240 to move so that the suction head 320 releases the adsorbed surface mount component.

[0052] Specifically, the release assembly 500 includes a fourth driver 510, an eccentric block 520 linked to the output end of the fourth driver 510, a first rotating wheel 530 rotatably connected to the eccentric block 520, a lifting block 540 linked to the first rotating wheel 530, and a second rotating wheel 550 and a third rotating wheel 560 rotatably connected to the lifting block 540. The lifting block 540 is provided with a limiting groove 540a, and the length extension direction of the limiting groove 540a can be set perpendicular to the axis direction of the first double gear assembly 220, and the first rotating wheel 530 can be rotatably set in the limiting groove 540a. When the nozzle assembly 300 is in the second position, the first driver 210 can drive the paddle 240 to rotate relative to the mounting frame 100 to between the second rotating wheel 550 and the third rotating wheel 560 through the first double gear assembly 220, and the fourth driver 510 drives the lifting block 540 to move along the axial direction of the second double gear assembly 423 through the first rotating wheel 530 connected to the eccentric block 520, and the second rotating wheel 550 drives the paddle 240 to move, so that the suction head 320 releases the adsorbed surface mount component. The fourth driver 510 can also drive the paddle 240 to return to its original position through the third rotating wheel 560 linked to the eccentric block 520.

[0053] The fourth driver 510 can be a stepper motor to obtain relatively high control accuracy. When the output end of the fourth driver 510 rotates, it drives the eccentric block 520 to rotate, and the center of the first rotating wheel 530 connected to the eccentric block 520 also changes in height on the mounting frame 100; this height change can be converted into the lifting and lowering movement of the lifting block 540 in the axial direction of the first double gear assembly 220 through the rolling cooperation between the first rotating wheel 530 and the groove wall of the limiting groove 540a. For example, the lifting block 540 can achieve linear lifting by cooperating with the slide rail of the mounting frame 100; the linear lifting of the lifting block 540 causes the center of the second rotating wheel 550 and the third rotating wheel 560 to change in height on the mounting frame 100, thereby realizing the action of pushing the paddle 240 downward or pulling the paddle 240 upward. The paddle 240 is fixedly connected to the piston rod in the support 230, and is used to adjust the air path of the suction head 320. For example, when the paddle 240 is in an upper position, the suction head 320 is connected to the vacuum air path, and the suction head 320 can be used to suck the surface mount components; after the lifting block 540 drives the paddle 240 to move downward through the second rotating wheel 550, the suction head 320 is no longer connected to the vacuum air path or the suction head 320 can be connected to the inflation air path, thereby releasing the surface mount components adsorbed on the suction head 320 from the suction head 320.

[0054] The head 10 of the SMT machine of the present application, during the mounting process, the head 10 first moves to the feeding position of the feeder, and the first driver 210 drives the support 230 to rotate through the first double gear assembly 220, so that the suction head 320 of the suction nozzle assembly 300 is close to the surface mounting component of the feeder; during this process, all the suction nozzle assemblies 300 are located in the second position; the third driver 411 drives the mounting platform 413 and the roller 415 connected to the mounting platform 413 to descend through the ball screw mechanism, and drives the nozzle assembly 300 that passes through the roller 415 and the flange 4131 to descend. At this time, the suction head 320 of the suction nozzle assembly 300 is connected to the vacuum mechanism, so that the surface mount component on the feeder can be sucked; the third driver 411 drives the mounting platform 413 and the roller 415 connected to the mounting platform 413 to rise through the ball screw mechanism, and drives the suction nozzle assembly 300 to rise to the second position through the flange 4131; the first driver 210 drives the support 230 to rotate through the first double gear assembly 220, so that the next adjacent suction nozzle assembly 300 corresponds to the surface mount component of the feeder, and repeats the above process. All the suction nozzle assemblies 300 of the head 10 are adsorbed with surface mount components.

[0055] The machine head 10 then moves to the patch area, and the first driver 210 drives the support 230 to rotate through the first double gear assembly 220, so that the suction head 320 of the suction nozzle assembly 300 is close to the mounting position; during this process, all the suction nozzle assemblies 300 are located at the second position; the third driver 411 drives the mounting platform 413 and the roller 415 connected to the mounting platform 413 to rise through the ball screw mechanism, and drives the nozzle assembly 300 that is inserted between the roller 415 and the flange 4131 by the shift block 340 to rise to the first position, The linkage wheel 330 is meshed with the second double gear assembly 423, and the second driver 421 further drives the nozzle assembly 300 to rotate relative to the support 230 through the second double gear assembly 423 to adjust the position of the surface mount component adsorbed thereon and achieve alignment with the mounting position; the third driver 411 then drives the mounting platform 413 and the roller 415 connected to the mounting platform 413 to descend through the ball screw mechanism, and drives the shift block 340 to penetrate the nozzle assembly 300 disposed between the roller 415 and the flange 4131 The suction head 320 is lowered to the third position corresponding to the mounting position; the fourth driver 510 of the release assembly 500 is then started, and the second and third wheels 550, 560 are lowered through the linkage of the eccentric block 520, the first rotating wheel 530, and the lifting block 540, and the second rotating wheel 550 drives the paddle 240 to descend, and the suction head 320 is no longer connected to the vacuum pumping mechanism or the suction head 320 is connected to the air charging path, so that the surface mount component adsorbed on the suction head 320 is released from the suction head 320 to the mounting position of the circuit substrate; a single suction nozzle assembly 300 After the mounting is completed, the fourth driver 510 can drive the paddle 240 to rise back to its original position through the linked third rotating wheel 560, and the third driver 411 can then drive the nozzle assembly 300 to move to the second position through the linked flange 4131, and the first driver 210 can then drive the support 230 to rotate through the first double gear assembly 220, so that the paddle block 340 of the next adjacent nozzle assembly 300 rotates to between the roller 415 and the flange 4131, and the above process is repeated, and all the nozzle assemblies 300 can complete the mounting process in turn.

[0056] The above head 10 can be used for a placement machine. The head 10 includes a mounting frame 100, a turret mechanism 200, a nozzle assembly 300 and an adjustment mechanism 400. The turret mechanism 200 is rotatably disposed on the mounting frame 100. The nozzle assembly 300 is disposed on the turret mechanism 200 and multiple nozzle assemblies are arranged along the circumference of the turret mechanism 200. The turret mechanism 200 can drive all the nozzle assemblies 300 to rotate relative to the mounting frame 100. The adjustment mechanism 400 includes a lifting assembly 410 and an adjustment assembly 420 disposed on the mounting frame 100. The lifting assembly 410 is used to drive at least one nozzle assembly 300 to move relative to the mounting frame 100 to cooperate with or disengage from the adjustment assembly 420. When the nozzle assembly 300 cooperates with the adjustment assembly 420, the adjustment assembly 420 drives the nozzle assembly 300 to rotate relative to the turret mechanism 200 to adjust the angle of the nozzle assembly 300. Since multiple suction nozzle assemblies 300 are arranged along the circumference of the turret mechanism 200, the turret mechanism 200 can drive all suction nozzle assemblies 300 to rotate relative to the mounting frame 100, so that the suction nozzle assembly 300 can absorb the surface mount components on the loading mechanism of the placement machine. When the adjustment assembly 420 cooperates with the suction nozzle assembly 300, it can at least adjust the angle of a single suction nozzle assembly 300 relative to the turret mechanism 200, and then adjust the angle of the surface mount components adsorbed thereon to meet the requirements of the placement process. Compared with the solution of arranging the suction nozzle assembly 300 along a straight line, the head 10 of the present application can effectively reduce the size of the entire head 10 in the width direction, thereby improving the compactness and integration of the head 10, thereby improving the compactness and integration of the placement machine.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A machine head, characterized in that: The head is used for a chip mounter, and the head comprises: Mounting frame; A turret mechanism, comprising a support rotatably arranged on the mounting frame; A nozzle assembly is provided on the turret mechanism and is arranged in a plurality along the circumference of the turret mechanism, wherein the turret mechanism can drive all the nozzle assemblies to rotate relative to the mounting frame; the nozzle assembly comprises a rod slidably matched with the support, a nozzle connected to one end of the rod, and a linkage wheel connected to the other end of the rod; and The adjustment mechanism includes a lifting component and an adjustment component arranged on the mounting frame, the adjustment component includes a second driver connected to the mounting frame, a second driving gear connected to the output end of the second driver, and a second double gear component linked to the second driving gear, the second double gear component includes two coaxially fixed gears, the gear teeth of one of the gears are circumferentially misaligned with the gear teeth of the other gear, and the second driving gear is meshed with the two gears; the lifting component is used to drive any one of the nozzle assemblies to move relative to the mounting frame along the axial direction of the second double gear assembly to switch between a first position and a second position relative to the second double gear assembly; in the first position, the linkage wheel is meshed with the second double gear assembly, and the second driver drives the nozzle assembly linked to the second double gear assembly to rotate forward and reverse relative to the turret mechanism through the second driving gear and the second double gear assembly to adjust the angle of the nozzle assembly, and the second double gear assembly compensates for the angular error of the forward and reverse rotation of the nozzle assembly through the meshing of the two gears with the second driving gear; in the second position, the linkage wheel is disengaged from the second double gear assembly.

2. The head according to claim 1, characterized in that: The turret mechanism includes a first driver connected to the mounting frame, a first double gear assembly linked to the output end of the first driver, the support linked to the first double gear assembly, and the nozzle assembly is arranged along the circumference of the support; the first driver drives the support and all the nozzle assemblies to rotate relative to the mounting frame through the first double gear assembly.

3. The head according to claim 2, characterized in that: The turret mechanism includes a first driving gear linked to the output end of the first driver, the first double gear assembly includes a first gear and a second gear coaxially fixed, and a fastener connected to the first gear and the second gear, and the first driving gear is meshed with the first gear and the second gear respectively; The first gear is provided with an adjustment hole, which extends from one side of the first gear to the other side opposite to the first gear. The fastener is passed through the adjustment hole and connected to the second gear to achieve a fixed connection between the first gear and the second gear; the adjustment hole is used to adjust the relative position of the first gear and the second gear to adjust the meshing clearance between the first driving gear and the first gear and the second gear when the first driving gear drives the first double gear assembly to rotate forward and reverse.

4. The head according to claim 3, characterized in that: The first double gear assembly includes an elastic member, the first gear is provided with a receiving groove connected to the adjustment hole, the elastic member is received in the receiving groove and one end is abutted against the first gear, and the other end of the elastic member is abutted against the fastener, and after the first gear and the second gear rotate relative to each other, the deformation amount of the elastic member changes accordingly.

5. The handpiece according to claim 2, characterized in that: The second dual gear assembly is coaxially disposed with the first dual gear assembly.

6. The handpiece according to claim 5, characterized in that: The suction nozzle assembly includes a shift block, and the shift block and the linkage wheel are arranged at the same end of the rod; the lifting assembly includes a third driver connected to the mounting frame, a mounting platform linked to the output end of the third driver, and a roller rotatably connected to the mounting platform, and the mounting platform has a flange; when the suction nozzle assembly is in the second position, the first driver drives the shift block to rotate relative to the mounting frame to between the roller and the flange through the first double gear assembly, and the third driver drives the suction nozzle assembly to the first position through the flange, and the third driver can also drive the suction nozzle assembly to the second position through the roller.

7. The handpiece according to claim 6, characterized in that: The suction nozzle assemblies are evenly spaced along the circumference of the support, and the moving direction of the rod is parallel to the axial direction of the second double gear assembly. The first driver, the second driver, and the third driver are arranged on the same side of the mounting frame, and the output shafts of the first driver, the second driver, and the third driver are parallel to each other.

8. The handpiece according to claim 5, characterized in that: The machine head includes a release assembly, and the turret mechanism includes a plurality of paddles slidably engaged with the support, and the plurality of paddles correspond one-to-one to the plurality of nozzle assemblies; the lifting assembly can also drive any of the nozzle assemblies to move axially along the second double gear assembly to a third position, and the second position is between the first position and the third position; in the third position, the release assembly drives the paddle to move so that the nozzle releases the adsorbed surface mount component.

9. The handpiece according to claim 8, characterized in that: The release assembly includes a fourth driver, an eccentric block linked to the output end of the fourth driver, a first rotating wheel rotatably connected to the eccentric block, a lifting block linked to the first rotating wheel, and a second rotating wheel and a third rotating wheel rotatably connected to the lifting block; the lifting block is provided with a limiting groove, and the first rotating wheel is rollably arranged in the limiting groove; when in the second position, the first driver drives the paddle to rotate relative to the mounting frame to between the second rotating wheel and the third rotating wheel through the first double gear assembly, and the fourth driver drives the lifting block to move axially along the second double gear assembly through the first rotating wheel connected to the eccentric block, and the second rotating wheel drives the paddle to move so that the suction head releases the adsorbed surface mount component; the fourth driver can also drive the paddle back to its position through the third rotating wheel linked to the eccentric block.

10. A chip mounter, characterized in that: It comprises a frame and the head according to any one of claims 1 to 9, wherein the mounting frame is movably arranged on the frame.

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