CN111669963B - Head attaching assembly, chip mounter and chip attaching method - Google Patents

Head attaching assembly, chip mounter and chip attaching method Download PDF

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Publication number
CN111669963B
CN111669963B CN202010457667.XA CN202010457667A CN111669963B CN 111669963 B CN111669963 B CN 111669963B CN 202010457667 A CN202010457667 A CN 202010457667A CN 111669963 B CN111669963 B CN 111669963B
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China
Prior art keywords
mounting
head
heads
mounting head
rotating motor
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Application number
CN202010457667.XA
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Chinese (zh)
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CN111669963A (en
Inventor
余耀国
杨建军
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Jiangxi Yitong Intelligent Equipment Manufacturing Co ltd
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Jiangxi Yitong Intelligent Equipment Manufacturing Co ltd
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Priority to CN202010457667.XA priority Critical patent/CN111669963B/en
Publication of CN111669963A publication Critical patent/CN111669963A/en
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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/04—Mounting of components, e.g. of leadless components
    • H05K13/0404—Pick-and-place heads or apparatus, e.g. with jaws
    • H05K13/0406—Drive mechanisms for pick-and-place heads, e.g. details relating to power transmission, motors or vibration damping
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/04—Mounting of components, e.g. of leadless components
    • H05K13/0404—Pick-and-place heads or apparatus, e.g. with jaws
    • H05K13/0411—Pick-and-place heads or apparatus, e.g. with jaws having multiple mounting heads
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/04—Mounting of components, e.g. of leadless components
    • H05K13/0404—Pick-and-place heads or apparatus, e.g. with jaws
    • H05K13/0413—Pick-and-place heads or apparatus, e.g. with jaws with orientation of the component while holding it; Drive mechanisms for gripping tools, e.g. lifting, lowering or turning of gripping tools
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/04—Mounting of components, e.g. of leadless components
    • H05K13/046—Surface mounting
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/08—Monitoring manufacture of assemblages
    • H05K13/081—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines
    • H05K13/0813—Controlling of single components prior to mounting, e.g. orientation, component geometry
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Operations Research (AREA)
  • Supply And Installment Of Electrical Components (AREA)

Abstract

The application discloses a head pasting component, a chip mounter and a chip pasting method, which belong to the field of circuit board processing and comprise a head pasting support, a plurality of mounting heads arranged on the head pasting support, and a plurality of rotating motors arranged on the head pasting support and used for driving the mounting heads to rotate, wherein each rotating motor drives at least two mounting heads to rotate through at least two driving belts; the head attaching assembly solves the problems that an existing head attaching assembly of a chip mounter generally comprises about 6 to 10 head attaching assemblies, each head attaching assembly is provided with a rotating motor, so that on one hand, the manufacturing cost of whole equipment can be increased, and on the other hand, the rotating motor is excessively compact to mount, and heat dissipation, repair and maintenance are not facilitated.

Description

Head attaching assembly, chip mounter and chip attaching method
Technical Field
The application relates to the field of circuit board processing, in particular to a head attaching assembly, a chip mounter and a chip attaching method.
Background
Currently, a placement machine may be configured after a dispenser or a screen printer, which is a device that precisely places components on a circuit board by moving a placement head.
The existing chip mounter comprises a head attaching assembly and a shooting device, wherein the head attaching assembly comprises a plurality of mounting heads and rotating motors corresponding to the number of the mounting heads, the mounting heads are arranged behind adsorption elements, the shooting device shoots the orientation conditions of the elements and transmits information to a PLC (programmable logic controller), the PLC processes the information and then sends out instructions to the rotating motors corresponding to the mounting heads, and the rotating motors drive the mounting heads controlled by the rotating motors to rotate until the elements are in correct orientations.
However, the above technical solution has the following problems: typically, the mounting head assembly includes about 6 to 10 mounting heads, each of which is equipped with a rotating electric machine, which on the one hand increases the manufacturing cost of the whole device, and on the other hand makes the mounting of the rotating electric machine too compact, which is disadvantageous for heat dissipation and repair and maintenance, and thus needs to be improved.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides a head attaching assembly, a surface mount machine and a surface mount method, so as to solve the technical problems.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a paste first subassembly, includes pastes first support, a plurality of subsides of setting in the first support of subsides and a plurality of rotating electrical machines that set up in the first support of subsides and are used for driving subsides and adorn first rotatory, its characterized in that, every rotating electrical machines drives two at least subsides dress heads through two at least drive belt and rotates.
Preferably, the same rotating motor is connected with m driving belts, namely a first driving belt, a second driving belt, … and an mth driving belt, wherein m is more than or equal to 2;
all mounting heads driven by the same rotating motor are divided into a first group of mounting heads, a second group of mounting heads, … and an mth group of mounting heads;
the first group of mounting heads are in transmission fit with the matched rotating motor through the first driving belt, …, and the m group of mounting heads are in transmission fit with the matched rotating motor through the m driving belt.
Preferably, the output shaft of the rotating electric machine is provided with a first driving wheel, a second driving wheel, a … and an mth driving wheel in turn along the axial direction; the first group of mounting heads are provided with first driving wheels, the second group of mounting heads are provided with second driving wheels …, and the mth group of mounting heads are provided with mth driving wheels;
the first driving wheel of the rotating motor is in transmission fit with the first driving wheel of the first group of mounting heads through a first driving belt, the second driving wheel of the rotating motor is in transmission fit with the second driving wheel of the second group of mounting heads through a second driving belt, …, and the mth driving wheel of the rotating motor is in transmission fit with the mth driving wheel of the mth group of mounting heads through an mth driving belt.
Preferably, m is 2, and all mounting heads driven by the same rotary motor are divided into a first group of mounting heads and a second group of mounting heads at intervals.
Preferably, two rotating motors are provided, ten mounting heads are provided, and each rotating motor controls five mounting heads to rotate;
among all the mounting heads driven by the same rotary motor, the first mounting head, the third mounting head and the fifth mounting head are the first group of mounting heads, and the second mounting head and the fourth mounting head are the second group of mounting heads.
Preferably, the mounting head is provided with a longitudinal chute, and a sliding block in sliding fit with the longitudinal chute is arranged on the inner wall of the first driving wheel or the second driving wheel mounted on the mounting head.
Preferably, the same rotating electric machine is provided with a plurality of steering wheels, part of which are in transmission fit with the first driving belt, and the rest of which are in transmission fit with the second driving belt;
the steering wheel is in transmission fit with the first driving belt and is used for increasing the wrap angle between the first driving belt and the first group of mounting heads and separating the first driving belt from the second group of mounting heads;
the steering wheel in transmission fit with the second driving belt is used for increasing the wrap angle between the second driving belt and the second group of mounting heads and separating the second driving belt from the first group of mounting heads.
A chip mounter comprising an X-axis moving module, a Y-axis moving module, a pressing device, a photographing device, and the head attaching assembly according to any one of claims 1 to 7, wherein the head attaching assembly achieves movement in X-axis and Y-axis directions through the X-axis moving module and the Y-axis moving module.
Preferably, the pressing device, the shooting device and the head attaching assembly are all provided with four groups, the pressing device is used for downwards moving the mounting head, and the shooting device is used for shooting the orientation condition of the element adsorbed by the mounting head.
A surface mounting method of a surface mounting machine comprises the following steps:
s1, a head pasting component moves to a material taking position through an X-axis moving module and a Y-axis moving module, a pressing device downwards moves mounting heads, negative pressure is generated at the mounting heads, and each mounting head adsorbs one element;
s2, resetting all mounting heads by the pressing device, and moving the head mounting assembly to the mounting position of the first mounting head;
s3, shooting the orientation conditions of the components adsorbed by all the mounting heads by the shooting device, sending the orientation conditions to the control unit, and controlling the starting of the rotating motor by the control unit, wherein the rotating motor drives the mounting heads to rotate, and the adsorbed components of the first mounting head are enabled to rotate to the correct orientation;
s4, the pressing device controls the first mounting head to move downwards and mounts the element on the circuit board;
s5, after the previous mounting head is attached, the pressing device controls the mounting head to reset, and meanwhile, the mounting head assembly moves to the mounting position of the next mounting head;
s6, the control unit controls to start a rotating motor, the rotating motor drives the mounting head to rotate, and the element adsorbed by the next mounting head rotates to a correct orientation;
s7, the pressing device controls the next mounting head to move downwards, and the element is mounted on the circuit board;
s8, repeating the steps S5-S7 until all the mounting heads finish mounting.
Preferably, the step S3 is completed during the step S2; the step S6 is completed in the process of the step S5.
Preferably, each rotating electrical machine is provided with a position sensor that records the initial position of the rotating electrical machine;
the rotating motor drives the mounting head to rotate, the element adsorbed by the previous mounting head rotates to the correct orientation, and after the mounting head finishes the mounting work, the control unit controls the rotating motor to reset to the initial position.
Preferably, the photographing device records that the deviation value of the mounting angles from the first mounting head to the last mounting head is alpha 1 、α 2 、…、α n Wherein alpha is 1 、α 2 、…、α n The mounting angle deviation value is an angle value required by the current position of the element adsorbed by the mounting head to be rotated to the correct position, wherein n is more than or equal to 2, and the angle deviation value is between-180 DEG and 180 DEG;
before the first mounting head is pressed down, the rotating motor drives the mounting head to be mountedThe rotation angle of the mounting head is alpha 1 Before the second mounting head is pressed down, the rotating motor drives the mounting head to rotate at an angle (alpha) 2 -α 1 ) …, the angle of rotation of the mounting head driven by the rotary motor before the nth mounting head is pressed down is (α n -α n-1 )。
Preferably, if (α) n -α n-1 ) More than or equal to 180 DEG, the actual angle of rotation of the rotary motor before the nth mounting head is pressed down is (alpha) n -α n-1 -360 °) if (α n -α n-1 ) The actual rotation angle of the rotating motor is (alpha) n -α n-1 +360°)。
Preferably, the head attaching assembly comprises a head attaching bracket, a plurality of attaching heads arranged on the head attaching bracket, and a plurality of rotating motors arranged on the head attaching bracket and used for driving the attaching heads to rotate, wherein each rotating motor drives at least two attaching heads to rotate through at least two driving belts.
Preferably, the same rotating motor is connected with m driving belts, namely a first driving belt, a second driving belt, … and an mth driving belt, wherein m is more than or equal to 2;
all mounting heads driven by the same rotating motor are divided into a first group of mounting heads, a second group of mounting heads, … and an mth group of mounting heads;
the first group of mounting heads are in transmission fit with a rotating motor matched with the first group of mounting heads through a first driving belt, …, and the m group of mounting heads are in transmission fit with the rotating motor matched with the first group of mounting heads through an m driving belt;
the output shaft of the rotating motor is sequentially provided with a first driving wheel, a second driving wheel, a … and an mth driving wheel along the axial direction of the output shaft; the first group of mounting heads are provided with first driving wheels, the second group of mounting heads are provided with second driving wheels …, and the mth group of mounting heads are provided with mth driving wheels;
the first driving wheel of the rotating motor is in transmission fit with the first driving wheel of the first group of mounting heads through a first driving belt, the second driving wheel of the rotating motor is in transmission fit with the second driving wheel of the second group of mounting heads through a second driving belt, …, and the mth driving wheel of the rotating motor is in transmission fit with the mth driving wheel of the mth group of mounting heads through an mth driving belt.
The beneficial effects of the application are as follows:
1. the application adopts a rotating motor, is provided with a plurality of driving belts and drives a plurality of mounting heads to rotate, compared with the prior art, the application greatly reduces the required quantity of the rotating motor, reduces the manufacturing cost of equipment, can avoid compact installation of the rotating motor, and is beneficial to heat dissipation and later maintenance of the rotating motor;
2. dividing all mounting heads controlled by the same rotating motor into a plurality of groups, wherein each group is mutually driven by one driving belt, so that the number of the mounting heads driven by each driving belt can be controlled to be about three to four, or else, more than five mounting heads are required to be dragged by one driving belt and are in a high-load working state for a long time, the service life of the driving belt can be greatly reduced, and the maintenance cost of equipment is increased;
3. the adoption of the steering wheel can increase the wrap angle between the driving belt and the mounting head driven by the driving belt, and can separate the driving belt from the mounting head driven by the non-driving belt, so that the situation that the first driving belt and the second group of mounting heads are contacted and rubbed with each other and the second driving belt and the first group of mounting heads are contacted and rubbed with each other is avoided;
4. when the same rotating motor rotates, all the mounting heads driven by the same rotating motor can be driven to rotate, namely, the rotation angle required by the following mounting head can be influenced in the process that the rotating motor drives the components adsorbed by the previous mounting head to rotate to the correct orientation, therefore, the application gives a formula (alpha) n -α n-1 ) To determine the angle of rotation required by the nth mounting head after the n-1 mounting heads finish mounting;
5. the angle of the rotating motor driving the mounting head to rotate is larger than 180 degrees or smaller than-180 degrees, namely the rotating motor is required to rotate a larger angle to enable the components adsorbed by the mounting head to be positioned in a correct orientation, and the application provides (alpha n -α n-1 ) Not less than 180 DEG and (. Alpha.) n -α n-1 ) When the angle is less than or equal to-180 DEG, the rotating motor actually needs to rotate to reduce the rotating line of the rotating motorOn the one hand, the time for rotating the components absorbed by the mounting head to the correct orientation can be reduced, and on the other hand, the power consumption of the rotating motor can be reduced.
Drawings
The application will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a construction of a tape head assembly according to the present application;
FIG. 2 is a top view of a placement head assembly of the present application;
fig. 3 is a schematic structural diagram of a head attaching assembly, a pressing device and a photographing device according to the present application;
fig. 4 is a schematic structural diagram of a chip mounter in the present application.
The reference numerals in the drawings are as follows:
1. a head attaching assembly; 101. a head attaching bracket; 102. a mounting head; 103. a rotating electric machine; 104. a drive belt; 105. a driving wheel; 106. a steering wheel; 107. a longitudinal chute; 108. a position sensor;
2. a pressing device;
3. a photographing device;
4. a negative pressure device;
5. an X-axis moving module;
6. and the Y-axis moving module.
Detailed Description
The conception, specific structure, and technical effects produced by the present application will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present application. It is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present application based on the embodiments of the present application. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the application can be interactively combined on the premise of no contradiction and conflict.
In the prior art, there is a problem that "each mounting head is equipped with a rotating electric machine, which on one hand increases the manufacturing cost of the whole device, and on the other hand makes the rotating electric machine too compact to be mounted, which is not conducive to heat dissipation and repair maintenance".
To solve this problem, the present application provides a head attaching assembly 1.
The head assembly 1, as shown in fig. 1 and 2, includes a head support 101, a plurality of mounting heads 102 disposed on the head support 101, and a plurality of rotating motors 103 disposed on the head support 101 and used for driving the mounting heads 102 to rotate, wherein each rotating motor 103 drives at least two mounting heads 102 to rotate through at least two driving belts 104.
More specifically, m drive belts 104, i.e., a first drive belt, a second drive belt, …, and an mth drive belt, are connected to the same rotating electric machine 103, wherein m is equal to or greater than 2.
All mounting heads 102 driven by the same rotary motor 103 are divided into a first set of mounting heads, a second set of mounting heads, …, and an mth set of mounting heads.
The first group of mounting heads are in transmission fit with the matched rotating motor 103 through a first driving belt, …, and the m group of mounting heads are in transmission fit with the matched rotating motor 103 through an m driving belt.
The application adopts one rotating motor 103, is provided with a plurality of driving belts 104, and simultaneously drives a plurality of mounting heads 102 to rotate, compared with the prior art, the application greatly reduces the required number of the rotating motor 103, reduces the manufacturing cost of equipment, can avoid compact installation of the rotating motor 103, and is beneficial to heat dissipation and later maintenance of the rotating motor 103.
In order to realize that one rotating motor 103 can drive the mth group of mounting heads through the mth driving belt, the present application is further arranged as follows.
The output shaft of the rotary motor 103 is provided with a plurality of driving wheels 105 in turn along the axis direction thereof, namely a first driving wheel, a second driving wheel, … and an mth driving wheel; the first group of mounting heads are provided with first driving wheels, the second group of mounting heads are provided with second driving wheels …, and the m group of mounting heads are provided with m driving wheels.
The first driving wheel of the rotating motor 103 is in transmission fit with the first driving wheel of the first group of mounting heads through a first driving belt, the second driving wheel of the rotating motor 103 is in transmission fit with the second driving wheel of the second group of mounting heads through a second driving belt, …, and the mth driving wheel of the rotating motor 103 is in transmission fit with the mth driving wheel of the mth group of mounting heads through an mth driving belt.
The first driving wheel, the second driving wheel, … and the m driving wheel on the mounting head 102 are all located on different horizontal planes, namely, located at different heights, so that the first driving belt, the second driving belt, … and the m driving belt are respectively located at different heights, and the driving belts 104 are not mutually affected.
All the mounting heads 102 controlled by the same rotating motor 103 are divided into a plurality of groups, each group is mutually driven by one driving belt 104, so that the number of the mounting heads 102 driven by each driving belt 104 can be controlled to be about three to four, otherwise, more than five mounting heads 102 need to be dragged by one driving belt 104, and the driving belt 104 is in a high-load working state for a long time, so that the service life of the driving belt 104 can be greatly reduced, and the maintenance cost of equipment is improved, but the driving belt 104 can drag more than five mounting heads 102.
The specific working principle is as follows: the photographing device 3 records the orientations of all the components adsorbed by the mounting heads 102, sends the orientations to the control unit, the control unit controls the rotating motor 103 to rotate, so that the components adsorbed by the first mounting head rotate to the correct orientation, the components adsorbed by the first mounting head are attached, then the control unit continues to control the rotating motor 103 to rotate, so that the components adsorbed by the second mounting head rotate to the correct orientation, the components adsorbed by the second mounting head are attached, and so on.
The following will be described in detail for two cases of m=2 and m=3, respectively, and the same can be achieved when m is equal to or greater than 4.
Example 1
In the present embodiment, m=2, and two rotary motors 103 are provided, ten mounting heads 102 are provided, and each rotary motor 103 controls five mounting heads 102 to rotate.
The same rotary motor 103 is connected with two driving belts 104, which are a first driving belt and a second driving belt, and all mounting heads 102 driven by the same rotary motor 103 are sequentially marked as a first mounting head, a second mounting head, a third mounting head, a fourth mounting head and a fifth mounting head along one direction and are divided into a first group of mounting heads and a second group of mounting heads.
The first mounting head, the second mounting head and the third mounting head can be used as a first group of mounting heads, and the fourth mounting head and the fifth mounting head can be used as a second group of mounting heads; the first mounting head, the second mounting head and the fourth mounting head may be used as the first group of mounting heads, and the third mounting head and the fifth mounting head may be used as the second group of mounting heads.
In order to make the stress of the driving belt 104 uniform, in this embodiment, a partition manner is adopted, where the first mounting head, the third mounting head and the fifth mounting head are used as a first group of mounting heads, and the second mounting head and the fourth mounting head are used as a second group of mounting heads.
The output shaft of the rotating motor 103 is sequentially provided with two driving wheels 105, namely a first driving wheel and a second driving wheel, along the axis of the output shaft from top to bottom, and the first group of mounting heads (namely, a first mounting head, a third mounting head and a fifth mounting head) are also provided with the first driving wheels, the second group of mounting heads (namely, a second mounting head and a fourth mounting head) are also provided with the second driving wheels, the first driving wheels are positioned at a high position, the second driving wheels are positioned at a low position, the first driving belt is in transmission fit with all the first driving wheels, and the second driving belt is in transmission fit with all the second driving wheels.
Thus, in the process of rotating the rotating motor 103, the rotating motor 103 drives the first group of mounting heads to rotate through the first driving belt, and drives the second group of mounting heads to rotate through the second driving belt, that is, the rotating motor 103 can simultaneously drive the total of five mounting heads 102 to simultaneously rotate.
In order to realize that the mounting head 102 can be moved up and down by the pressing device 2 and can be rotated by the rotating motor 103, the present embodiment is further configured as follows.
The mounting head 102 is provided with a longitudinal chute 107, and a sliding block in sliding fit with the longitudinal chute 107 is arranged on the inner wall of the first driving wheel or the second driving wheel mounted on the mounting head 102.
When the pressing device 2 drives the mounting head 102 to move up and down, the sliding block slides in the longitudinal sliding groove 107, so that the first driving wheel or the second driving wheel does not influence the up-down movement of the mounting head 102, and in addition, the first driving wheel or the second driving wheel can drive the first group of mounting heads or the second group of mounting heads to rotate by utilizing the sliding block.
In addition, the mode of realizing the up-and-down movement and rotation of the mounting head 102 is also applicable to the situation that m is equal to or greater than 3.
Further, in order to avoid the situation that the first driving belt is pressed against the second set of mounting heads and the transmission is affected, the embodiment is further configured as follows.
The same rotating electric machine 103 is equipped with several steering wheels 106, some of which 106 are in driving engagement with a first drive belt and the remaining steering wheels 106 are in driving engagement with a second drive belt.
Specifically, each rotating electrical machine 103 in the present embodiment is equipped with three steered wheels 106.
The first steering wheel is arranged between the first mounting head and the third mounting head and is used for preventing the first driving belt from being pressed against the second mounting head and improving the wrap angle between the first mounting head and the first driving belt and between the third mounting head and the first driving belt; the second steering wheel is arranged between the fifth mounting head and the rotary motor 103 and is used for improving the wrap angle between the fifth mounting head and the first driving belt; the third steering wheel is provided between the fourth mounting head and the rotary motor 103 for increasing the wrap angle between the fourth mounting head and the first drive belt.
The present embodiment is not limited to the three steering wheels 106, and the steering wheels 106 may be provided between the first mounting head and the rotary motor 103, between the second mounting head and the fourth mounting head, and between the third mounting head and the fifth mounting head.
In summary, the steering wheel in driving fit with the first driving belt is used for increasing the wrap angle between the first driving belt and the first group of mounting heads, and separating the first driving belt from the second group of mounting heads; the steering wheel in transmission fit with the second driving belt is used for increasing the wrap angle between the second driving belt and the second group of mounting heads and separating the second driving belt from the first group of mounting heads.
The use of the steering wheel 106 can increase the wrap angle between the driving belt 104 and the mounting head 102 driven by the driving belt 104, and can separate the driving belt 104 from the mounting head 102 driven by the driving belt 104, so as to avoid the occurrence of the situation that the first driving belt and the second mounting head contact and rub each other.
Example 2
In the present embodiment, m=2, and two rotary motors 103 are provided, twelve mounting heads 102 are provided, and each rotary motor 103 controls six mounting heads 102 to rotate.
The difference between embodiment 2 and embodiment 1 is that each rotating motor 103 controls six mounting heads 102 to rotate, i.e., a sixth mounting head is added to the second set of mounting heads, so that the second driving belt is simultaneously in driving fit with the second mounting head, the fourth mounting head and the sixth mounting head.
The other parts are the same as in example 1.
Example 3
In the present embodiment, m=3, and two rotating motors 103 are provided, eighteen mounting heads 102 are provided, and each rotating motor 103 controls rotation of nine mounting heads 102.
The same rotary motor 103 is connected with three driving belts 104, which are a first driving belt, a second driving belt and a third driving belt, and all mounting heads 102 driven by the same rotary motor 103 are sequentially marked as a first mounting head, a second mounting head, … and a ninth mounting head along one direction and are divided into a first group of mounting heads, a second group of mounting heads and a third group of mounting heads.
In order to make the stress of the driving belt 104 uniform, the first mounting head, the fourth mounting head and the seventh mounting head are used as the first group of mounting heads in the present embodiment; taking the second mounting head, the fifth mounting head and the eighth mounting head as a second group of mounting heads; and taking the third mounting head, the sixth mounting head and the ninth mounting head as a third group of mounting heads.
The output shaft of the rotating electric machine 103 is provided with two driving wheels 105, namely, a first driving wheel, a second driving wheel and a third driving wheel, in turn from top to bottom along the axis thereof, and the first group of mounting heads (namely, the first mounting head, the fourth mounting head and the seventh mounting head) are also provided with the first driving wheel, the second group of mounting heads (namely, the second mounting head, the fifth mounting head and the eighth mounting head) are also provided with the second driving wheel, and the third group of mounting heads (namely, the third mounting head, the sixth mounting head and the ninth mounting head) are also provided with the third driving wheel.
The first driving wheel is located at a high position, the second driving wheel is located at a medium position, the third driving wheel is located at a low position, and in the same rotating electric machine 103, the first driving belt is in driving engagement with all the first driving wheels, the second driving belt is in driving engagement with all the second driving wheels, and the third driving belt is in driving engagement with all the third driving wheels.
Thus, in the rotation process of the rotating motor 103, the rotating motor 103 drives the first group of mounting heads to rotate through the first driving belt, drives the second group of mounting heads to rotate through the second driving belt, and drives the third group of mounting heads to rotate through the third driving belt, namely, the rotating motor 103 can drive nine mounting heads driven by the rotating motor to rotate simultaneously.
As in embodiment 1, this embodiment 3 may also be provided with a plurality of steering wheels 106, a part of the steering wheels 106 being engaged with the first drive belt, a part of the steering wheels 106 being engaged with the second drive belt, and a part of the steering wheels 106 being engaged with the third drive belt.
Such as between the first and fourth heads, between the second and fifth heads, between the third and sixth heads, etc., the steering wheel 106 may be provided to increase the wrap angle between each drive belt 104 and its driven head and also to avoid each drive belt 104 affecting other groups of heads than it drives.
The use of the steering wheel 106 increases the wrap angle between the drive belt 104 and the mounting head driven by the drive belt 104, and separates the drive belt 104 from the mounting head driven by the drive belt 104.
The above is a detailed description of the three but not limited to three situations of the placement head assembly 1 according to the present application.
In addition, as shown in fig. 3 and 4, the present application further provides a chip mounter, which includes an X-axis moving module 5, a Y-axis moving module 6, a pressing device 2, a photographing device 3, and the head attaching assembly 1 according to any of the above embodiments, wherein the head attaching assembly 1 moves in the X-axis and Y-axis directions through the X-axis moving module 5 and the Y-axis moving module 6.
Further, the pressing device 2, the photographing device 3 and the head assembly 1 are all provided with four groups, the pressing device 2 is used for moving the mounting head 102 downwards, and the photographing device 3 is used for photographing the orientation condition of the components absorbed by the mounting head 102.
The application provides a method for attaching a matched chip mounter aiming at the improved chip mounter and a chip mounter, which comprises the following steps:
s1, a head attaching assembly 1 moves to a material taking position through an X-axis moving module 5 and a Y-axis moving module 6, a pressing device 2 moves down a mounting head 102, and negative pressure is generated at the mounting head 102, so that each mounting head 102 adsorbs one element;
the negative pressure effect of the mounting head 102 can be generated by a common negative pressure device 4.
S2, resetting all mounting heads 102 by the pressing device 2, and controlling the head assembly 1 to move to the mounting position of the first mounting head;
wherein, the mounting position of the first mounting head, namely the component absorbed by the first mounting head and the position where the component should be attached to the circuit board are positioned on the same longitudinal straight line; similarly, the mounting position of the second mounting head, that is, the component absorbed by the second mounting head, is located on the same longitudinal straight line as the position where the component should be attached to the circuit board.
S3, the shooting device 3 shoots the orientation conditions of all the components adsorbed by the mounting heads 102 and sends the orientation conditions to the control unit, the control unit controls the starting of the rotating motor 103, and the rotating motor 103 drives the mounting heads 102 to rotate and enables the adsorbed components of the first mounting head to rotate to the correct orientation;
the step S3 may be completed during the step S2, and after all the mounting heads 102 in the step S1 have adsorbed the components and start to reset, until the mounting head assembly 1 moves to the mounting position of the first mounting head, which is enough for the photographing device 3 to complete photographing, the control unit completes the processing, the rotating motor 103 completes the rotation of the components adsorbed by the first mounting head to the correct orientation, that is, the step S3 is completed simultaneously during the step S2, and the two steps are integrated together, so that the time required by the step S6 is directly wiped out, thereby reducing the time required for mounting a single component and improving the efficiency and the yield.
S4, the pressing device 2 controls the first mounting head to move downwards and mounts the element on the circuit board;
s5, after the previous mounting head is attached, the pressing device 2 controls the mounting head to reset, and meanwhile, the mounting head assembly 1 moves to the mounting position of the next mounting head;
s6, the control unit controls the rotary motor 103 to be started, the rotary motor 103 drives the mounting head to rotate, and the element adsorbed by the next mounting head is enabled to rotate to a correct orientation;
s7, the pressing device 2 controls the next mounting head to move downwards, and the element is mounted on the circuit board;
s8, repeating the steps S5-S7 until all the mounting heads finish mounting.
The step S6 may be completed in the process of step S5, and the previous mounting head begins to be reset until the mounting head assembly 1 moves to the mounting position of the next mounting head, which is enough for the control unit to complete the processing, and the rotating motor 103 completes the rotation of the component adsorbed by the next mounting head to the correct orientation, that is, in the process of step S5, step S6 is completed simultaneously, and the two steps are integrated together, so that the time spent in step S6 is directly removed, thereby reducing the time spent in mounting a single component, and improving the efficiency and the yield.
Through the steps S2-S8, the component mounting work of all the mounting heads 102 driven by one rotating motor 103 is completed, and the component mounting work of all the mounting heads 102 driven by other rotating motors 103 can be completed by the repeated cycle operation.
Since the same rotating motor 103 will drive all the mounting heads 102 driven by the same rotating motor 103 to rotate when rotating, that is, the rotation angle required by the next mounting head will be affected in the process that the rotating motor 103 drives the components adsorbed by the previous mounting head to rotate to the correct orientation, the present application further provides the following two control methods of the rotating motor 103 to solve the problem that the mounting heads 102 of the same rotating motor 103 affect each other.
The first method of controlling the rotary electric machine 103 is as follows.
A position sensor 108 is arranged at each rotary motor 103, and the position sensor 108 records the initial position of the rotary motor 103; the rotating motor 103 drives the mounting head 102 to rotate, and makes the components adsorbed by the previous mounting head rotate to the correct orientation, and after the mounting head finishes the mounting work, the control unit controls the rotating motor 103 to reset to the initial position.
The advantage of this control method is that no matter how much the rotating motor 103 rotates the previous mounting head, the rotating motor 103 is reset to the initial position first, and then the rotating operation of the next mounting head is performed, so that the angles between the mounting heads 102 are not affected.
The second method of controlling the rotary electric machine 103 is as follows.
The photographing device 3 records that the deviation value of the mounting angles from the first mounting head to the last mounting head is alpha 1 、α 2 、…、α n Wherein alpha is 1 、α 2 、…、α n The mounting angle deviation value is the angle value required by the current position of the element absorbed by the mounting head 102 to rotate to the correct position, wherein n is more than or equal to 2, and the angle deviation value is between-180 DEG and 180 DEG;
before the first mounting head is pressed down, the rotating motor 103 drives the mounting head to rotateIs alpha at an angle of 1 Before the second mounting head is pressed down, the rotating motor 103 drives the mounting head to rotate by an angle (α 2 -α 1 ) …, the angle of rotation of the mounting head driven by the rotary motor 103 before the nth mounting head is pressed down is (α n -α n-1 )。
The following will be for alpha 1 、α 2 、α 3 Assigned values respectively, and is convenient to understand.
Let alpha be 1 ＝60°，α 2 ＝-80°，α 3 The term "120 °, and defines that the mounting head 102 rotates clockwise as positive and counter-clockwise as negative in plan view, i.e. the first mounting head needs to rotate 60 ° clockwise to rotate to the correct position, the second mounting head needs to rotate 80 ° counter-clockwise to rotate to the correct position, and the third mounting head needs to rotate 120 ° clockwise to rotate to the correct position.
After the component sucked by the first mounting head is rotated to the correct orientation and the bonding operation is completed, the rotary motor 103 is rotated clockwise by 60 ° with respect to the initial position, and then, if the component sucked by the second mounting head is rotated to the correct orientation, the component is rotated counterclockwise by 140 °, namely (α 2 -α 1 ) After the second mounting head completes the bonding operation, the rotary motor 103 rotates counterclockwise by 80 ° relative to the initial position, and in this case, if the component adsorbed by the third mounting head is to be rotated to the correct orientation, the component needs to rotate clockwise by 200 °, namely (α 3 -α 2 )。
The clockwise rotation may be defined as a negative direction and the counterclockwise rotation may be defined as a positive direction, but the same definition is required in the same rotary electric machine 103.
However, "rotating 200 ° clockwise" corresponds to "rotating 160 ° counterclockwise", and "rotating 160 ° counterclockwise" also reduces the angle of rotation of the motor, reduces the time taken, and the present application is further provided as follows in view of this.
If (alpha) n -α n-1 ) More than or equal to 180 DEG, the actual rotation angle of the rotary motor 103 before the nth mounting head is pressed down is (alpha) n -α n-1 -360 °) if (α n -α n-1 ) Not more than-180 DEG, then rotateThe actual required rotation angle of the motor 103 is (α n -α n-1 +360°)。
According to the above assumption, if (α n -α n-1 ) The above formula is proved by the fact that the rotation motor 103 needs to drive the mounting head to rotate 270 ° clockwise before the nth mounting head is pressed down, which is equal to the rotation motor 103 needs to drive the mounting head to rotate 90 ° counterclockwise, namely (270 ° -360 °) = -90 °.
By calculating the actual rotation angle of the rotating electric machine 103, the rotation stroke of the rotating electric machine 103 can be reduced, so that on one hand, the time taken for the components adsorbed by the mounting head 102 to rotate to the correct orientation can be reduced, and on the other hand, the power consumption of the rotating electric machine 103 can be reduced.
In the method for mounting a chip on a chip mounter provided by the present application, the head assembly 1 includes a head mounting frame 101, a plurality of mounting heads 102 disposed on the head mounting frame 101, and a plurality of rotating motors 103 disposed on the head mounting frame and used for driving the mounting heads 102 to rotate, wherein each rotating motor 103 drives at least two mounting heads 102 to rotate through at least two driving belts 104.
Further, the same rotating motor 103 is connected with m driving belts, namely a first driving belt, a second driving belt, … and an mth driving belt, wherein m is more than or equal to 2;
all mounting heads 102 driven by the same rotary motor 103 are divided into a first set of mounting heads, a second set of mounting heads, …, and an mth set of mounting heads;
the first group of mounting heads are in transmission fit with the matched rotating motor 103 through a first driving belt, …, and the mth group of mounting heads are in transmission fit with the matched rotating motor 103 through an mth driving belt;
the output shaft of the rotary motor 103 is provided with a first driving wheel, a second driving wheel, … and an mth driving wheel in sequence along the axial direction; the first group of mounting heads are provided with first driving wheels, the second group of mounting heads are provided with second driving wheels …, and the mth group of mounting heads are provided with mth driving wheels;
the first driving wheel of the rotating motor 103 is in transmission fit with the first driving wheel of the first group of mounting heads through a first driving belt, the second driving wheel of the rotating motor 103 is in transmission fit with the second driving wheel of the second group of mounting heads through a second driving belt, …, and the mth driving wheel of the rotating motor 103 is in transmission fit with the mth driving wheel of the mth group of mounting heads through an mth driving belt.
The three applications of a chip mounter, a chip mounter and a chip mounting method of the chip mounter are specifically described.
While the preferred embodiment of the present application has been described in detail, the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present application, and the equivalent modifications or substitutions are included in the scope of the present application as defined in the appended claims.

Claims (3)

1. The surface mounting method of the surface mounting machine is characterized by comprising the following steps of:
s1, a head pasting component moves to a material taking position through an X-axis moving module and a Y-axis moving module, a pressing device downwards moves mounting heads, negative pressure is generated at the mounting heads, and each mounting head adsorbs one element;
s2, resetting all mounting heads by the pressing device, and moving the head mounting assembly to the mounting position of the first mounting head;
s3, shooting the orientation conditions of the components adsorbed by all the mounting heads by the shooting device, sending the orientation conditions to the control unit, and controlling the starting of the rotating motor by the control unit, wherein the rotating motor drives the mounting heads to rotate, and the adsorbed components of the first mounting head are enabled to rotate to the correct orientation;
s4, the pressing device controls the first mounting head to move downwards and mounts the element on the circuit board;
s5, after the previous mounting head is attached, the pressing device controls the mounting head to reset, and meanwhile, the mounting head assembly moves to the mounting position of the next mounting head;
s6, the control unit controls to start a rotating motor, the rotating motor drives the mounting head to rotate, and the element adsorbed by the next mounting head rotates to a correct orientation;
s7, the pressing device controls the next mounting head to move downwards, and the element is mounted on the circuit board;
s8, repeating the steps S5-S7 until all the mounting heads finish mounting;
the shooting device records that the mounting angle deviation value from the element adsorbed by the first mounting head to the element adsorbed by the last mounting head controlled by the same rotating motor is sequentially as follows、/>、…、/>Wherein->、/>、…、/>Are all between-180 DEG and 180 DEG, < >>The mounting angle deviation value is an angle value required by the current position of the element adsorbed by the mounting head to rotate to the correct position;
before the first mounting head is pressed down, the rotating motor drives the mounting head to rotate by an angle ofBefore the second mounting head is pressed down, the rotating motor drives the mounting head to rotate by an angle of (/ -A)>) …, th->Before each mounting head is pressed downThe angle of the rotating motor driving the mounting head to rotate is (/ -A)>)；
If it isThen in->Before the mounting heads are pressed down, the actual rotation angle of the rotating motor isIf->The actual rotation angle of the rotating motor is；
The head pasting component comprises a head pasting support, a plurality of head pasting heads arranged on the head pasting support, and a plurality of rotating motors arranged on the head pasting support and used for driving the head pasting heads to rotate, and each rotating motor drives at least two head pasting heads to rotate through at least two driving belts.
2. The method of claim 1, wherein step S3 is performed during step S2; the step S6 is completed in the process of the step S5.
3. The method of mounting a chip mounter according to claim 1, wherein the same rotating electric machine is connected toA strip driving belt, which is a first driving belt, a second driving belt, …, and a first +.>A driving belt, wherein->；
All mounting heads driven by the same rotary motor are divided into a first group of mounting heads, a second group of mounting heads, … and a first group of mounting headsAssembling the mounting head;
the first group of mounting heads are in transmission fit with a rotary motor matched with the first group of mounting heads through a first driving belt, …, the first group of mounting headsThe assembled mounting head passes through the->The driving belt is in transmission fit with a rotary motor matched with the driving belt;
the output shaft of the rotating motor is sequentially provided with a first driving wheel, a second driving wheel, … and a second driving wheel along the axial directionA driving wheel; the first group of mounting heads are provided with first driving wheels, the second group of mounting heads are provided with second driving wheels …, and the first group of mounting heads is provided with second driving wheels +.>The assembled mounting head is provided with a first part>A driving wheel;
the first driving wheel of the rotating motor is in transmission fit with the first driving wheel of the first group of mounting heads through a first driving belt, the second driving wheel of the rotating motor is in transmission fit with the second driving wheel of the second group of mounting heads through a second driving belt, …, and the first driving wheel of the rotating motorThe driving wheel passes throughFirst->Drive belt and->The first part of the assembled mounting head>The driving wheels are in transmission fit.
CN202010457667.XA 2020-05-26 2020-05-26 Head attaching assembly, chip mounter and chip attaching method Active CN111669963B (en)

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