Chip mounter structure

Abstract

The utility model discloses a chip mounter structure, which relates to the technical field of mechanical transmission, and comprises a shell, a chip mounter, a chip mounter and a chip mounter, the magnetic group component is arranged in the shell, the magnetic group component comprises a Hall chip and a magnet pole, and the Hall chip is arranged on the flexible circuit board; the adsorption device is used for adsorbing components; the driving device is arranged in the shell, one end of a driving shaft of the driving device is connected with the adsorption device so as to drive the adsorption device to rotate, the other end of the driving shaft is provided with a magnet pole, and the magnet pole and the Hall chip are coaxially and oppositely arranged; the lifting device is connected with the side part of the adsorption device and is used for driving the adsorption device to lift and move; and the magnetic group component, the adsorption device, the driving device and the lifting device are all connected with the control device. The device can effectively improve the rotation angle control precision of the component.

Description

Technical Field

[0001] The utility model relates to the technical field of chip mounters, and more specifically to a chip mounter structure. Background Art

[0002] In the prior art, a chip mounter, also known as a "mounting machine" or "surface mount system", is a device used to place components at high speed and high precision. In the production line, the chip mounter is mainly configured after the dispensing machine or solder paste printer. It is a device that accurately places surface mount components on the PCB pads by moving the mounting head. Most transmission chip mounters adopt an off-axis magnetic encoding design, that is, the magnet is set in the center of the motor shaft, and the magnet is not coaxial with the Hall chip in the sensor. The Hall chip deviates from the axis of the motor shaft, resulting in a low rotation angle control accuracy of the chip mounter.

[0003] In summary, how to improve the rotation angle control accuracy of the placement machine is a problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a chip placement machine structure, which can effectively improve the rotation angle control accuracy of components.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A chip placement machine structure, comprising:

[0007] A housing having a flexible circuit board disposed therein;

[0008] A magnetic encoding component, which is arranged in the housing, the magnetic encoding component comprises a Hall chip and a magnet pole, and the Hall chip is arranged on the flexible circuit board;

[0009] An adsorption device, which is used to adsorb components;

[0010] A driving device, which is arranged in the housing, wherein one end of a driving shaft of the driving device is connected to the adsorption device to drive the adsorption device to rotate, and the other end of the driving shaft is provided with the magnet pole, and the magnet pole and the Hall chip are coaxial and arranged opposite to each other;

[0011] A lifting device connected to the side of the adsorption device and used to drive the adsorption device to move up and down;

[0012] The control device is connected to the magnetic braiding assembly, the adsorption device, the driving device and the lifting device.

[0013] In one embodiment, a tail cover is provided at the end of the shell, and the tail cover is provided with a protrusion that matches with the bending portion of the flexible circuit board, and the protrusion is an arc transition structure.

[0014] In one embodiment, a metal column is further included, one end of which is welded to the flexible circuit board, and the other end of which is connected to the UVW tail line of the driving device.

[0015] In one embodiment, an air hole is provided at the end of the driving shaft close to the magnetic pole of the magnet.

[0016] In one embodiment, the adsorption device includes a suction cup head adapted to the external structure and a sleeve connected to the end of the suction cup head, the sleeve is sleeved on the outer periphery of the driving shaft, a limiting sleeve is provided on the end of the driving shaft, and the limiting sleeve is fixedly connected to the end of the driving shaft, and the limiting sleeve abuts against the middle of the suction cup head;

[0017] A spring is wound between the outer periphery of the driving shaft and the inner periphery of the sleeve, the first elastic end of the spring abuts against the suction cup head, the second elastic end of the spring abuts against one end of a fixed base, the fixed base is clamped between the driving shaft and the sleeve, the end of the fixed base is fixedly connected to the sleeve, and the other end of the fixed base abuts against the limit platform of the shell.

[0018] In one embodiment, a ball sleeve is sandwiched between the inner periphery of the shell and the outer periphery of the sleeve, and a sealing ring is provided on the outer periphery of the suction cup head and the shaft end of the driving shaft.

[0019] In one embodiment, an optical axis is further included at one side of the suction cup head, and the optical axis is used as a reference for detecting the rotation accuracy of the suction cup head.

[0020] In one embodiment, a bellows is provided between the end of the sleeve away from the suction cup head and the end of the limiting platform, and a steel wire is embedded in the bellows.

[0021] In one embodiment, the lifting device includes a slide rail vertically arranged on one side of the adsorption device, a slider slidably arranged on the slide rail, and a reciprocating driving member for driving the slider to move up and down. The slider is connected to the driving device to drive the adsorption device connected to the driving device to move up and down.

[0022] In one embodiment, the driving device comprises a coreless brushless motor, and a driving shaft of the coreless brushless motor is a hollow shaft.

[0023] When using the SMT structure provided by the utility model, a vent pipe can be used to connect the vent of the charging and discharging device with the adsorption device of the SMT machine, and the charging and discharging device can be controlled to perform an air suction operation on the adsorption device to reduce the air pressure inside the adsorption device, and then the adsorption device can be used to adsorb components. During use, the control device controls the operation of the lifting device to drive the adsorption device to lift and move, so that the adsorption device is close to or away from the components, and then the components are adsorbed or placed. Moreover, the control device can control the operation of the driving device so that the driving shaft drives the adsorption device to rotate to adjust the angle of the adsorbed components. When the air suction operation of the charging and discharging device is stopped and the charging and discharging device is controlled to perform a blowing operation on the adsorption device, the gas can be blown to the adsorption device to eliminate the adsorption effect of the adsorption device on the components, and then the components are placed on the corresponding placement board.

[0024] The magnetic encoding component of the device includes a Hall chip and a magnet pole, wherein the magnetic encoding component adopts a coaxial structure, that is, the Hall chip is arranged on a flexible circuit board, a magnet pole is arranged at the end of the driving shaft of the driving device, and the Hall chip and the magnet pole are coaxial and arranged opposite to each other. When the magnet pole rotates, the N pole and the S pole of the magnet pole alternate, and the Hall chip can accurately sense the magnetic field change of the magnet pole and output a pulse signal to the control device, so that the control device can accurately detect and control the rotation angle of the component. The magnetic encoding component of this device is different from the mainstream off-axis magnetic encoding structure on the market (that is, the Hall chip and the magnet pole are not coaxially arranged), which can effectively improve the recognition accuracy of the Hall chip and improve the rotation angle control accuracy of the component.

[0025] In summary, the chip placement machine structure provided by the utility model can effectively improve the rotation angle control accuracy of components. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model 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 in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of the chip mounter provided by the utility model;

[0028] Figure 2 for Figure 1 A side view of

[0029] Figure 3 for Figure 2 sectional view of

[0030] Figure 4for Figure 3 A partial enlarged view of

[0031] Figure 5 for Figure 1 Another side view of;

[0032] Figure 6 for Figure 5 sectional view of

[0033] Figure 7 for Figure 6 A partial enlarged view of .

[0034] Reference numerals:

[0035] 1-housing; 11-limiting platform; 12-ball sleeve; 2-magnetic encoding assembly; 21-Hall chip; 22-magnet pole; 3-adsorption device; 31-suction cup head; 32-sleeve; 321-groove; 33-spring; 34-fixed base; 341-protrusion; 35-first sealing ring; 36-second sealing ring; 37-optical axis; 38-bellows; 4-driving device; 41-driving shaft; 42-air hole; 43-limiting shaft sleeve; 44-end cover; 5-lifting device; 6-control device; 7-flexible circuit board; 8-tail cover; 81-protrusion; 9-metal column. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] The core of the utility model is to provide a chip placement machine structure, which can effectively improve the rotation angle control accuracy of components.

[0038] Please refer to Figures 1 to 7 .

[0039] This specific embodiment provides a chip placement machine structure, the structure diagram can refer to Figures 1 to 3 ,in, Figure 1 A schematic diagram of the structure of the chip mounter provided by the utility model; Figure 2 for Figure 1 A side view of Figure 3 for Figure 2 The cross-sectional view of the chip mounter includes:

[0040] A housing 1, in which a flexible circuit board 7 is arranged;

[0041] The magnetic encoding component 2 is arranged in the housing 1. The magnetic encoding component 2 includes a Hall chip 21 and a magnet pole 22. The Hall chip 21 is arranged on the flexible circuit board 7.

[0042] Adsorption device 3, which is used for adsorbing components;

[0043] The driving device 4 is arranged in the housing 1. One end of the driving shaft 41 of the driving device 4 is connected to the adsorption device 3 to drive the adsorption device 3 to rotate. The other end of the driving shaft 41 is provided with a magnet pole 22. The magnet pole 22 and the Hall chip 21 are coaxial and arranged opposite to each other.

[0044] A lifting device 5, which is connected to the side of the adsorption device 3 and is used to drive the adsorption device 3 to move up and down;

[0045] The control device 6 , the magnetic weaving assembly 2 , the adsorption device 3 , the driving device 4 and the lifting device 5 are all connected to the control device 6 .

[0046] In actual use, the shape, structure, size, material, position, etc. of the shell 1, magnetic weaving component 2, adsorption device 3, driving device 4, lifting device 5 and control device 6 can be determined according to actual conditions and actual needs.

[0047] When using the SMT structure provided by the utility model, a vent pipe can be used to connect the vent of the charging and discharging device with the adsorption device 3 of the SMT machine, and the charging and discharging device can be controlled to perform an air suction operation on the adsorption device 3 to reduce the air pressure inside the adsorption device 3, and then the adsorption device 3 is used to adsorb components. During use, the control device 6 controls the operation of the lifting device 5 to drive the adsorption device 3 to lift and move, so that the adsorption device 3 is close to or away from the components, and then the components are adsorbed or placed. Moreover, the control device 6 can control the operation of the driving device 4 so that the driving shaft 41 drives the adsorption device 3 to rotate to adjust the angle of the adsorbed components. When the air suction operation of the charging and discharging device is stopped and the charging and discharging device is controlled to perform a blowing operation on the adsorption device 3, the gas can be blown to the adsorption device 3 to eliminate the adsorption effect of the adsorption device 3 on the components, and then the components are placed on the corresponding placement board.

[0048] Please refer to Figure 4 and Figure 7 The magnetic encoding component 2 of the device includes a Hall chip 21 and a magnet pole 22, wherein the magnetic encoding component 2 adopts a coaxial structure, that is, the Hall chip 21 is arranged on the flexible circuit board 7, and the end of the driving shaft 41 of the driving device 4 is provided with a magnet pole 22, and the Hall chip 21 and the magnet pole 22 are coaxial and arranged opposite to each other.

[0049] When the magnet pole 22 rotates, the N pole and the S pole of the magnet pole 22 alternate, and the Hall chip 21 can accurately sense the magnetic field change of the magnet pole 22, and output a pulse signal to the control device 6, so that the control device 6 can accurately detect and control the rotation angle of the component. The magnetic encoding component 2 of this device is different from the mainstream magnetic encoding off-axis structure on the market (that is, the Hall chip 21 and the magnet pole 22 are not coaxially arranged), which can effectively improve the recognition accuracy of the Hall chip 21 and improve the rotation angle control accuracy of the component.

[0050] In summary, the chip placement machine structure provided by the utility model can effectively improve the rotation angle control accuracy of components.

[0051] In one embodiment, a tail cover 8 is provided at the end of the housing 1, and the tail cover 8 is provided with a raised portion 81 that matches the bent portion of the flexible circuit board 7, and the raised portion 81 is an arc transition structure. Figure 4 and Figure 5 shown.

[0052] It should be noted that when the device moves up and down, the flexible circuit board 7 needs to bend back and forth. By providing a raised portion 81 that matches the flexible circuit board 7 on the tail cover 8, the arc transition structure is used to support and ensure that there is no stress concentration when the flexible circuit board 7 is bent back and forth, thereby avoiding the flexible circuit board 7 from being repeatedly folded at a certain section and failing and being damaged.

[0053] In one embodiment, a metal column 9 is further included. One end of the metal column 9 is welded to the flexible circuit board 7, and the other end of the metal column 9 is connected to the UVW tail line of the driving device 4. Please refer to Figure 4 .

[0054] It should be noted that there is no limit to the number of metal columns 9. The metal columns 9 play a role of connection and conduction. One end of the metal column 9 is welded to the flexible circuit board 7, and the other end of the metal column 9 is connected to the UVW tail line of the drive device 4 (such as a motor) (for example, the UVW line of the motor is led out at the rear end of the end cover 44 of the motor and welded on the metal column 9), which can greatly reduce the product space and reduce the difficulty of assembly. Among them, the UVW tail line refers to the UVW three-phase line of the motor, that is, the three power lines in the motor, which represent the three phases of the motor respectively. These three lines are usually yellow, green, and red lines, corresponding to the three phases of three-phase alternating current, and the phases differ by 120° from each other. The function of the motor UVW three-phase line is to provide the three-phase alternating current power required by the motor so that the motor can operate normally.

[0055] In one embodiment, the end of the drive shaft 41 close to the magnet pole 22 is provided with an air hole 42, please refer to Figure 4 The air hole 42 is arranged at the end of the driving shaft 41 mainly to optimize the airway structure and solve the problems of air entrapment, air leakage or airway obstruction when the SMT machine inhales air.

[0056] In one embodiment, the adsorption device 3 includes a suction cup head 31 for adapting to the external structure and a sleeve 32 connected to the end of the suction cup head 31, the sleeve 32 is sleeved on the outer periphery of the driving shaft 41, and a limiting sleeve 43 is provided at the end of the driving shaft 41, and the limiting sleeve 43 is fixedly connected to the end of the driving shaft 41, and the limiting sleeve 43 abuts against the middle part of the suction cup head 31; a spring 33 is wound between the outer periphery of the driving shaft 41 and the inner periphery of the sleeve 32, the first elastic end of the spring 33 abuts against the suction cup head 31, and the second elastic end of the spring 33 abuts against one end of the fixed base 34, the fixed base 34 is clamped between the driving shaft 41 and the sleeve 32, and the end of the fixed base 34 is fixedly connected to the sleeve 32, and the other end of the fixed base 34 abuts against the limiting platform 11 of the shell 1, please refer to Figure 4 and Figure 7 .

[0057] It should be noted that a protrusion 341 can be provided on the fixed base 34, and a groove 321 that is engaged with the protrusion 341 can be provided on the sleeve 32. The protrusion 341 and the groove 321 at the sleeve 32 realize a single flat position engagement connection (a flat position in mechanical terms refers to a flat position that is difficult to fix in a circular or other shape and is formed by milling, and is used to fix or clamp components) so that the engagement accuracy between the fixed base 34 and the sleeve 32 is high, which helps to reduce the side clearance of the product and improve the control accuracy of the product. Moreover, the above-mentioned fixed connection between the limiting sleeve 43 and the end of the drive shaft 41 may refer to the connection between the limiting sleeve 43 and the end of the drive shaft 41 by welding to prevent the entire suction cup head 31 from falling out, thereby playing a limiting role.

[0058] It should also be noted that the suction cup head 31 is adapted to the external structure and serves to connect components. In addition, a suction nozzle can be provided inside the suction cup head 31, and the suction nozzle is connected to the inflation and deflation device, so that the suction cup head 31 can be evacuated and blown by controlling the inflation and deflation device, so that the suction nozzle can absorb components or separate the suction nozzle from components. A fixed limiting sleeve 43 can be welded on the end of the drive shaft 41, and the limiting sleeve 43 is used to prevent the entire suction cup head 31 from falling off during the lifting or rotation process, and the limiting sleeve 43 can limit the suction cup head 31.

[0059] In addition, the spring 33 is used to ensure the ability of the suction cup head 31 to be pushed in and out, preventing the placement machine structure from having hard contact with components when running at high speed, causing damage to the components and equipment, and helping to increase the service life of the components.

[0060] In one embodiment, a ball sleeve 12 is sandwiched between the inner periphery of the housing 1 and the outer periphery of the sleeve 32, and a sealing ring is provided at the outer periphery of the suction cup head 31 and the shaft end of the driving shaft 41. The ball sleeve 12 can be made of plastic or rubber, wherein the ball sleeve 12 made of plastic material can achieve the effect of weight reduction while ensuring the smoothness of the up and down movement of the suction cup head 31, reduce the side gap between the suction cup head 31 and the housing 1, and improve the running accuracy of the suction cup head 31. In addition, a sealing ring is provided at the outer periphery of the suction cup head 31 and the shaft end of the driving shaft 41, which can refer to a first sealing ring 35 provided at the shaft end of the driving shaft 41. The first sealing ring 35 mainly plays a sealing role to prevent the internal gas leakage of the driving device 4 (such as a motor), and prevent foreign matter, dust, etc. from entering the driving device 4 and affecting the normal operation of the driving device 4. In addition, a second sealing ring 36 can be provided at the outer periphery of the suction cup head 31, and the second sealing ring 36 is connected to the external structure to play a sealing role.

[0061] In one embodiment, an optical axis 37 is further included on one side of the suction cup head 31. The optical axis 37 is used as a reference for detecting the rotation accuracy of the suction cup head 31. Figure 7 The optical axis 37 is mainly used to detect the rotation accuracy of the suction cup head 31. For example, when a CCD (charge coupled device) detection tool detects the rotation accuracy of the suction cup head 31, a starting point and an end point are required for positioning. The optical axis 37 plays a positioning role to facilitate the accurate detection of the CCD detection tool.

[0062] In one embodiment, a bellows 38 is provided between the end of the sleeve 32 away from the suction cup head 31 and the end of the limiting platform 11, and a steel wire is embedded in the bellows 38. Figure 4 and Figure 7 .

[0063] It should be noted that the bellows 38 refers to a tubular elastic element formed by connecting foldable corrugated sheets along the folding and telescopic direction, and a 0.2 mm diameter steel wire can be embedded in the bellows 38 to support the inner wall of the bellows 38 to prevent the bellows 38 from deformation, which helps to increase the service life of the device.

[0064] In addition, the bellows 38 can be made of rubber material to ensure the sealing of the product. Of course, the bellows 38 can also be made of plastic material to achieve a weight reduction effect.

[0065] In one embodiment, the lifting device 5 includes a slide rail vertically arranged on one side of the adsorption device 3, a slider slidably arranged on the slide rail, and a reciprocating drive member for driving the slider to move up and down, and the slider is connected to the drive device 4 to drive the adsorption device 3 connected to the drive device 4 to move up and down. That is, when it is necessary to control the lifting and lowering movement of the suction cup head 31, the control device 6 can control the reciprocating drive member to operate to drive the slider to move up and down along the slide rail, thereby driving the suction cup head 31 to move up and down. For example, when it is necessary to absorb components, the suction cup head 31 can be controlled to descend, and when the suction cup head 31 is separated from the components, the suction cup head 31 can be controlled to move up.

[0066] In one embodiment, the driving device 4 includes a coreless brushless motor, and the driving shaft 41 of the coreless brushless motor is a hollow shaft.

[0067] It should be noted that the drive device 4 can be a high-performance motor or a coreless brushless motor, and the drive device 4 is not limited to being a motor, and can be selected according to actual conditions and needs during actual use. In addition, the drive shaft 41 of the drive device 4 is a hollow shaft, which mainly drives the components sucked by the suction cup head 31 to rotate.

[0068] In order to further illustrate the use method of the placement machine structure provided by the utility model, an example is given below.

[0069] First, according to the size and shape of the PCB (Process Control Block) board, you can select a suitable positioning device and install it on the positioning table of the placement machine to ensure that the PCB board (that is, the components) can be accurately and stably fixed on the positioning device. Then, place the prepared PCB board on the positioning device, and adjust the position and direction of the PCB board to ensure that the PCB board is aligned with the coordinate system of the placement machine. At the same time, check whether the markings on the PCB board and the placement position of the components are correct. After that, the placement machine can be started for automatic placement operation. During the placement process, the operator needs to pay close attention to the operating status and placement results of the placement machine to ensure the quality and efficiency of the placement.

[0070] Specifically, the automatic patch operation of the patch machine is as follows: the vent of the inflation and deflation device is connected to the suction cup head 31 of the patch machine through the vent pipe, the air pressure inside the suction cup head 31 is reduced by the suction operation, and the suction cup head 31 is used to adsorb the components, and then the lifting device 5 is controlled to operate to drive the suction cup head 31 to move up and down, and the hollow shaft of the driving device 4 can be controlled to rotate to adjust the angle of the adsorbed components. When the suction operation of the inflation and deflation device is stopped and the inflation and deflation device is controlled to perform the blowing operation, the gas is blown to the suction cup head 31 to eliminate the adsorption effect of the suction cup head 31 on the components, and the components are placed on the corresponding placement board.

[0071] It should be noted that the first sealing ring 35 and the second sealing ring 36 mentioned in the present invention are only used to distinguish the difference in position, and there is no order of precedence.

[0072] In addition, it should be noted that the directions or positional relationships indicated by "up and down", "inside and outside", etc. in the present invention are based on the directions or positional relationships shown in the accompanying drawings, and are only for the purpose of simplifying the description and facilitating understanding, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0073] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other. Any combination of all embodiments provided by the utility model is within the protection scope of this utility model and will not be described in detail here.

[0074] The above is a detailed introduction to the structure of the chip mounter provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A chip mounter structure, characterized in that: include: A housing (1) having a flexible circuit board (7) arranged therein; A magnetic encoding component (2) disposed in the housing (1), the magnetic encoding component (2) comprising a Hall chip (21) and a magnet pole (22), the Hall chip (21) being disposed on the flexible circuit board (7); An adsorption device (3) for adsorbing components; A driving device (4) is arranged in the housing (1); one end of a driving shaft (41) of the driving device (4) is connected to the adsorption device (3) to drive the adsorption device (3) to rotate; the other end of the driving shaft (41) is provided with the magnet pole (22); the magnet pole (22) and the Hall chip (21) are coaxially arranged and face each other; A lifting device (5), connected to a side portion of the adsorption device (3) and used to drive the adsorption device (3) to move upward and downward; A control device (6), the magnetic braiding assembly (2), the adsorption device (3), the driving device (4) and the lifting device (5) are all connected to the control device (6).

2. The chip mounter structure according to claim 1, characterized in that: The end of the housing (1) is provided with a tail cover (8), the tail cover (8) being provided with a raised portion (81) that matches with the bent portion of the flexible circuit board (7), the raised portion (81) being a circular arc transition structure.

3. The chip mounter structure according to claim 2, characterized in that: It also comprises a metal column (9), one end of the metal column (9) being welded to the flexible circuit board (7), and the other end of the metal column (9) being connected to the UVW tail line of the driving device (4).

4. The chip mounter structure according to claim 1, characterized in that: An air hole (42) is provided at the end of the driving shaft (41) close to the magnet pole (22).

5. The chip mounter structure according to any one of claims 1 to 4, characterized in that: The adsorption device (3) comprises a suction cup head (31) adapted to match the external structure and a sleeve (32) connected to the end of the suction cup head (31), the sleeve (32) being sleeved on the outer periphery of the drive shaft (41), the end of the drive shaft (41) being provided with a limiting shaft sleeve (43), and the limiting shaft sleeve (43) being fixedly connected to the end of the drive shaft (41), and the limiting shaft sleeve (43) abuts against the middle of the suction cup head (31); A spring (33) is wound between the outer periphery of the drive shaft (41) and the inner periphery of the sleeve (32); a first elastic end of the spring (33) abuts against the suction cup head (31); a second elastic end of the spring (33) abuts against one end of a fixed base (34); the fixed base (34) is clamped between the drive shaft (41) and the sleeve (32); an end of the fixed base (34) is fixedly connected to the sleeve (32); and the other end of the fixed base (34) abuts against a limit platform (11) of the shell (1).

6. The chip mounter structure according to claim 5, characterized in that: A ball sleeve (12) is sandwiched between the inner periphery of the housing (1) and the outer periphery of the sleeve (32), and a sealing ring is provided on the outer periphery of the suction cup head (31) and the shaft end of the drive shaft (41).

7. The chip mounter structure according to claim 5, characterized in that: It also includes an optical axis (37) located on one side of the suction cup head (31), and the optical axis (37) is used as a reference piece for detecting the rotation accuracy of the suction cup head (31).

8. The chip mounter structure according to claim 5, characterized in that: A bellows (38) is provided between the end of the sleeve (32) away from the suction cup head (31) and the end of the limiting platform (11), and a steel wire is embedded in the bellows (38).

9. The chip mounter structure according to any one of claims 1 to 4, characterized in that: The lifting device (5) comprises a slide rail vertically arranged on one side of the adsorption device (3), a slider slidably arranged on the slide rail, and a reciprocating driving member for driving the slider to move up and down, and the slider is connected to the driving device (4) to drive the adsorption device (3) connected to the driving device (4) to move up and down.

10. The chip mounter structure according to any one of claims 1 to 4, characterized in that: The driving device (4) comprises a coreless brushless motor, and the driving shaft (41) of the coreless brushless motor is a hollow shaft.

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