CN111669963A - Adhesive head assembly, adhesive mounter and adhesive mounting method - Google Patents

Adhesive head assembly, adhesive mounter and adhesive mounting method Download PDF

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Publication number
CN111669963A
CN111669963A CN202010457667.XA CN202010457667A CN111669963A CN 111669963 A CN111669963 A CN 111669963A CN 202010457667 A CN202010457667 A CN 202010457667A CN 111669963 A CN111669963 A CN 111669963A
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CN
China
Prior art keywords
mounting
head
heads
rotating motor
mounting head
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Granted
Application number
CN202010457667.XA
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Chinese (zh)
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CN111669963B (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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Publication of CN111669963B publication Critical patent/CN111669963B/en
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    • 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 invention discloses a head attaching assembly, a chip mounter and a chip mounting method, which belong to the field of circuit board processing, and comprise a head attaching support, a plurality of mounting heads arranged on the head attaching support, and a plurality of rotating motors arranged on the head attaching 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 problem of current chip mounter's paster subassembly can all be equipped with a rotating electrical machines including the mounting head about 6 to 10 usually, every mounting head, can improve the manufacturing cost of whole equipment on the one hand, on the other hand can make the rotating electrical machines installation too compact, be unfavorable for heat dissipation and repair maintenance is solved.

Description

Adhesive head assembly, adhesive mounter and adhesive mounting method
Technical Field
The invention relates to the field of circuit board processing, in particular to a pasting head assembly, a pasting machine and a pasting method.
Background
Currently, a placement machine may be configured after a dispenser or a screen printer, and is an apparatus that precisely places components on a circuit board by moving a placement head.
The existing chip mounter comprises a chip mounter body and a shooting device, wherein the chip mounter body comprises a plurality of mounting heads and rotating motors corresponding to the mounting heads in quantity, the mounting heads are arranged behind adsorption elements, the shooting device shoots the orientation condition of the elements and transmits information to a PLC (programmable logic controller), the PLC processes the information and then sends an instruction to the rotating motors corresponding to the mounting heads, and the rotating motors drive the mounting heads controlled by the rotating motors to rotate to the elements and are located in correct orientations.
However, the above technical solutions have the following problems: generally, the head assembly comprises about 6 to 10 mounting heads, each mounting head is provided with a rotating motor, on one hand, the manufacturing cost of the whole equipment is increased, and on the other hand, the rotating motor is arranged too compactly, so that the heat dissipation and repair and maintenance are not facilitated, and improvement is needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a pasting head assembly, a pasting machine and a pasting method, so as to solve the technical problems.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a head assembly comprises a head support, a plurality of mounting heads arranged on the head support, and a plurality of rotating motors arranged on the head support and used for driving the mounting heads to rotate, and is characterized in that each rotating motor drives at least two mounting heads to rotate through at least two driving belts.
Preferably, the same rotating motor is connected with m driving belts which are respectively a first driving belt, a second driving belt, … and an m-th driving belt, wherein m is more than or equal to 2;
all the 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 m-th group of mounting heads;
the first group of mounting heads is in transmission fit with a matched rotating motor through a first driving belt, …, and the m-th group of mounting heads is in transmission fit with a matched rotating motor through an m-th driving belt.
Preferably, the output shaft of the rotating electrical machine is provided with a first drive wheel, a second drive wheel, …, and an m-th drive wheel in this order along the axial direction thereof; the first assembling and mounting head is provided with a first driving wheel, the second assembling and mounting head is provided with a second driving wheel, …, and the mth assembling and mounting head is provided with a mth 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 mth driving wheel of the rotating motor is in transmission fit with the mth driving wheel of the mth group of mounting heads through the mth driving belt.
Preferably, m is 2, and all the mounting heads driven by the same rotating motor are divided into a first group of mounting heads and a second group of mounting heads at intervals.
Preferably, the number of the rotating motors is two, the number of the mounting heads is ten, and each rotating motor controls the five mounting heads to rotate;
among all the mounting heads driven by the same rotating motor, the first mounting head, the third mounting head and the fifth mounting head are first assembly mounting heads, and the second mounting head and the fourth mounting head are second assembly mounting heads.
Preferably, the mounting head is provided with a longitudinal sliding groove, and a sliding block which is in sliding fit with the longitudinal sliding groove is arranged on the inner wall of the first driving wheel or the second driving wheel which is arranged on the mounting head.
Preferably, the same rotating motor is provided with a plurality of steering wheels, part of the steering wheels are in transmission fit with the first driving belt, and the rest of the steering wheels are in transmission fit with the second driving belt;
a 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 mounting head and separating the first driving belt from the second group mounting head;
a steering wheel in driving engagement with the second drive belt is used to increase the wrap angle between the second drive belt and the second set of mounting heads and to separate the second drive belt from the first set 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 assembly according to any one of claims 1 to 7, said head assembly being movable in X-axis and Y-axis directions by the X-axis moving module and the Y-axis moving module.
Preferably, four sets of the pressing device, the shooting device and the pasting head component are arranged, the pressing device is used for moving the pasting head downwards, and the shooting device is used for shooting the orientation of the component adsorbed by the pasting head.
A chip mounting method of a chip mounter comprises the following steps:
s1, moving the pasting head assembly to a material taking position through the X-axis moving module and the Y-axis moving module, moving the pasting heads downwards through the pressing device, and generating negative pressure at the pasting heads to enable each pasting head to adsorb an element;
s2, resetting all the mounting heads by the pressing device, and moving the head 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, and sending the orientation conditions to the control unit, wherein the control unit controls to start the rotating motor, the rotating motor drives the mounting heads to rotate, and the adsorbed components of the first mounting head rotate to the correct orientation;
s4, the pressing device controls the first mounting head to move downwards and mounts the component 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 attaching position of the next mounting head;
s6, the control unit controls to start the rotating motor, the rotating motor drives the mounting head to rotate, and the element adsorbed by the next mounting head rotates to the correct orientation;
s7, the pressing device controls the next mounting head to move downwards, and the component is mounted on the circuit board;
and S8, repeating the steps S5-S7 until all the mounting heads are mounted.
Preferably, the step S3 is completed during the step S2; the step S6 is completed during the step S5.
Preferably, each rotating electrical machine is equipped with a position sensor which records the initial position of the rotating electrical machine;
the rotary motor drives the mounting heads to rotate, the element adsorbed by the previous mounting head is made to rotate to the correct orientation, and after the mounting head finishes mounting work, the control unit controls the rotary motor to reset to the initial position.
As a preferenceThe shooting device records that the deviation values of the mounting angles from the component adsorbed by the first mounting head to the component adsorbed by the last mounting head controlled by the same rotating motor are α in sequence1、α2、…、αnWherein, α1、α2、…、αnThe mounting angle deviation value is an angle value required for rotating the current position of the element adsorbed by the mounting head to a correct position;
before the first mounting head is pressed down, the rotating motor drives the mounting head to rotate by an angle of α1Before the second mounting head is pressed down, the rotary motor drives the mounting head to rotate by an angle (α)2-α1) …, before the nth head is pressed down, the rotary motor drives the head to rotate by an angle (α)n-αn-1)。
Preferably, if (α)n-αn-1) Not less than 180 degrees, the actual rotation angle of the rotating motor before the nth mounting head is pressed is (α)n-αn-1360 deg.), if (α)n-αn-1) Less than or equal to-180 degrees, the actual rotation angle of the rotating motor is (α)n-αn-1+360°)。
Preferably, the head assembly includes a head support, a plurality of mounting heads disposed on the head support, and a plurality of rotating motors disposed on the head support and configured to drive the mounting heads to rotate, and each rotating motor drives at least two mounting heads to rotate via at least two driving belts.
Preferably, the same rotating motor is connected with m driving belts which are respectively a first driving belt, a second driving belt, … and an m-th driving belt, wherein m is more than or equal to 2;
all the 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 m-th group of mounting heads;
the first group of mounting heads are in transmission fit with the matched rotating motor through a first driving belt, …, and the mth group of mounting heads are in transmission fit with the matched rotating motor through a mth driving belt;
the output shaft of the rotating motor is sequentially provided with a first driving wheel, a second driving wheel, … and an m-th driving wheel along the axial direction of the output shaft; the first assembling and mounting head is provided with a first driving wheel, the second assembling and mounting head is provided with a second driving wheel, …, and the mth assembling and mounting head is provided with a mth 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 mth driving wheel of the rotating motor is in transmission fit with the mth driving wheel of the mth group of mounting heads through the mth driving belt.
The invention has the beneficial effects that:
1. the invention adopts a rotating motor, is provided with a plurality of driving belts and simultaneously drives a plurality of mounting heads to rotate, compared with the prior art, the required number of the rotating motors is greatly reduced, the manufacturing cost of equipment is reduced, the compact installation of the rotating motors can be avoided, and the heat dissipation and the later maintenance of the rotating motors are facilitated;
2. all the mounting heads controlled by the same rotating motor are divided into a plurality of groups, each group is mutually transmitted through one driving belt, the number of the mounting heads transmitted by each driving belt can be controlled to be about three to four, otherwise, one driving belt needs to drag more than five mounting heads and is 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 improved;
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 on one hand, and can separate the driving belt from the mounting head driven by the non-driving belt on the other hand, so as to avoid the situations such as the mutual contact friction between the first driving belt and the second group mounting head and the mutual contact friction between the second driving belt and the first group mounting head;
4. when the same rotating motor rotates, all the mounting heads driven by the same rotating motor can be driven to rotate, namely, in the process that the rotating motor drives the element adsorbed by the previous mounting head to rotate to the correct orientation, the required rotating angle of the next mounting head can be influenced, and therefore, the formula (α) is given by the inventionn-αn-1) Determining the angle of rotation required by the nth mounting head after the n-1 mounting heads finish mounting;
5. the rotation angle of the mounting head driven by the rotating motor is larger than 180 degrees or smaller than-180 degrees, namely the component absorbed by the mounting head can be arranged in the correct orientation only by rotating the rotating motor by a larger angle, and the invention provides (α)n-αn-1) Not less than 180 DEG and (α)n-αn-1) When the angle is less than or equal to minus 180 degrees, the actual angle of rotation of the rotating motor is needed to reduce the rotating stroke of the rotating motor, so that the time spent by the element adsorbed by the mounting head to rotate to the correct orientation can be reduced on one hand, and the power consumption of the rotating motor can be reduced on the other hand.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the construction of a tape head assembly according to the present invention;
FIG. 2 is a top view of the applicator assembly of the present invention;
FIG. 3 is a schematic structural view of a head assembly, a pressing device and a photographing device according to the present invention;
fig. 4 is a schematic structural diagram of a chip mounter according to the present invention.
The reference numerals in the figures are explained below:
1. attaching a head component; 101. a head attaching bracket; 102. a mounting head; 103. a rotating electric machine; 104. a drive belt; 105. a drive 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. y-axis moving module.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.
In the prior art, the problem that each mounting head is provided with a rotating motor, on one hand, the manufacturing cost of the whole equipment is improved, and on the other hand, the rotating motor is too compact to mount, and is not beneficial to heat dissipation and repair and maintenance exists.
To solve this problem, the present invention provides a head assembly 1.
A head assembly 1, as shown in FIG. 1 and FIG. 2, comprises 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 m-th drive belt, are connected to the same rotating motor 103, where m is 2 or more.
All the mounting heads 102 driven by the same rotary motor 103 are divided into a first group mounting head, a second group mounting head, …, and an m-th group mounting head.
The first group of mounting heads is in transmission fit with the matched rotating motor 103 through a first driving belt, …, and the m-th group of mounting heads is in transmission fit with the matched rotating motor 103 through an m-th driving belt.
Compared with the prior art, the invention greatly reduces the required number of the rotating motors 103, reduces the manufacturing cost of equipment, can avoid the compact installation of the rotating motors 103 and is beneficial to the heat dissipation and later maintenance of the rotating motors 103.
In order to realize that one rotating motor 103 can drive the mth group of mounting heads by the mth drive belt, the present invention is further configured as follows.
The output shaft of the rotating electrical machine 103 is provided with a plurality of driving wheels 105, which are a first driving wheel, a second driving wheel, … and an m-th driving wheel, in sequence along the axial direction; the first group of mounting heads is provided with a first driving wheel, the second group of mounting heads is provided with a second driving wheel, …, and the mth group of mounting heads is provided with an mth driving wheel.
A first driving wheel of the rotary motor 103 is in driving engagement with a first driving wheel of the first group of mounting heads via a first driving belt, a second driving wheel of the rotary motor 103 is in driving engagement with a second driving wheel of the second group of mounting heads via a second driving belt, …, and an mth driving wheel of the rotary motor 103 is in driving engagement with an mth driving wheel of the mth group of mounting heads via an mth driving belt.
The first driving wheel, the second driving wheel, … and the mth driving wheel on the mounting head 102 are all located on different levels, i.e. at different heights, so that the first driving belt, the second driving belt, … and the mth driving belt are respectively located at different heights, and the driving belts 104 are not affected by each other.
All the mounting heads 102 controlled by the same rotating motor 103 are divided into a plurality of groups, each group is mutually transmitted through one driving belt 104, the number of the mounting heads 102 transmitted by each driving belt 104 can be controlled to be about three to four, otherwise, one driving belt 104 needs to drag more than five mounting heads 102, 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, the maintenance cost of equipment is improved, but the situation that more than five mounting heads 102 are dragged by one driving belt 104 per se can also be realized, and the invention belongs to the protection scope of the invention.
The specific working principle is as follows: the shooting device 3 records the orientation of all the components adsorbed by the mounting heads 102 and sends the orientation to the control unit, the control unit controls the rotating motor 103 to rotate, so that the component adsorbed by the first mounting head rotates to the correct orientation, the component adsorbed by the first mounting head is attached, then the control unit continuously controls the rotating motor 103 to rotate, so that the component adsorbed by the second mounting head rotates to the correct orientation, the component adsorbed by the second mounting head is attached, and the like.
The following will describe in detail the two cases of m-2 and m-3, respectively, and the same applies to the case where m ≧ 4.
Example 1
In this embodiment, m is 2, and there are two rotating motors 103, ten mounting heads 102, and each rotating motor 103 controls five mounting heads 102 to rotate.
Two driving belts 104, which are a first driving belt and a second driving belt, are connected to the same rotating motor 103, and all the mounting heads 102 driven by the same rotating motor 103 are sequentially labeled as a first mounting head, a second mounting head, a third mounting head, a fourth mounting head, and a fifth mounting head in 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 mounting head, and the fourth mounting head and the fifth mounting head can be used as a second group mounting head; the first mounting head, the second mounting head and the fourth mounting head may also be used as the first assembling mounting head, and the third mounting head and the fifth mounting head may be used as the second assembling mounting head.
In order to make the force applied to the driving belt 104 uniform, the first mounting head, the third mounting head and the fifth mounting head are used as the first set of mounting heads, and the second mounting head and the fourth mounting head are used as the second set of mounting heads in the present embodiment by using a division manner at intervals.
The output shaft of the rotating motor 103 is provided with two driving wheels 105 sequentially from top to bottom along the axis thereof, namely a first driving wheel and a second driving wheel, the first group of mounting heads (namely, the first mounting head, the third mounting head and the fifth mounting head) are also provided with the first driving wheel, the second group of mounting heads (namely, the second mounting head and the fourth mounting head) are also provided with the second driving wheel, the first driving wheel is positioned at a high position, the second driving wheel is 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, during the rotation of the rotary motor 103, the rotary motor 103 drives the first group of mounting heads to rotate by the first driving belt and the second group of mounting heads to rotate by the second driving belt, i.e., the rotary motor 103 can simultaneously drive a total of five mounting heads 102 to rotate simultaneously.
In order to realize that the mounting head 102 can move up and down by the pressing device 2 and can also rotate by the rotating motor 103, the present embodiment is further configured as follows.
The mounting head 102 is provided with a longitudinal sliding groove 107, and a sliding block which is in sliding fit with the longitudinal sliding groove 107 is arranged on the inner wall of a first driving wheel or a second driving wheel which is arranged on the mounting head 102.
When the pressing device 2 drives the mounting head 102 to move up and down, the slider slides in the longitudinal sliding groove 107, so that the first driving wheel or the second driving wheel does not influence the up-and-down movement of the mounting head 102, and in addition, the first driving wheel or the second driving wheel can drive the first mounting head or the second mounting head to rotate by utilizing the slider.
In addition, the way of realizing the up-and-down movement and rotation of the mounting head 102 is also applicable to the case that m is more than or equal to 3.
Further, in order to avoid a situation where the first driving belt is pressed against the second group mounting head and the transmissions are mutually affected, the present embodiment is further configured as follows.
The same rotating motor 103 is equipped with several diverting pulleys 106, part of the diverting pulleys 106 being in driving engagement with a first drive belt, the remaining diverting pulleys 106 being in driving engagement with a second drive belt.
Specifically, each rotating electrical machine 103 is equipped with three steered wheels 106 in the present embodiment.
The first steering wheel is arranged between the first mounting head and the third mounting head, is used for preventing the first driving belt from pressing against the second mounting head and can also improve the wrap angle between the first mounting head and the first driving belt and between the third mounting head and the first driving belt; a second steering wheel is provided between the fifth mounting head and the rotary motor 103 for increasing the wrap angle between the fifth mounting head and the first drive belt; a 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, as well.
In summary, a steering wheel in driving engagement with the first drive belt is used to increase the wrap angle between the first drive belt and the first set of mounting heads and to separate the first drive belt from the second set of mounting heads; a steering wheel in driving engagement with the second drive belt is used to increase the wrap angle between the second drive belt and the second set of mounting heads and to separate the second drive belt from the first set of mounting heads.
The use of the steering wheel 106 increases the wrap angle between the drive belt 104 and the placement head 102 driven by the drive belt 104, on the one hand, and separates the drive belt 104 from the placement head 102 driven by the non-drive belt 104, on the other hand, to avoid situations such as the first drive belt rubbing against the second placement head, which would otherwise occur.
Example 2
In this embodiment, m is 2, 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 rotary motor 103 controls six mounting heads 102 to rotate, that is, a sixth mounting head is added to the second group of mounting heads, and a second drive belt is simultaneously in driving engagement with the second mounting head, the fourth mounting head and the sixth mounting head.
The other portions are the same as in example 1.
Example 3
In this embodiment, m is 3, two rotary motors 103 are provided, eighteen mounting heads 102 are provided, and each rotary motor 103 controls nine mounting heads 102 to rotate.
Three drive belts 104, which are a first drive belt, a second drive belt, and a third drive belt, are connected to the same rotating motor 103, and all the mounting heads 102 driven by the same rotating motor 103 are sequentially labeled as a first mounting head, a second mounting head, …, and a ninth mounting head in 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 force applied to the driving belt 104 uniform, the first mounting head, the fourth mounting head, and the seventh mounting head are used as the first set of mounting heads in this embodiment; taking the second mounting head, the fifth mounting head and the eighth mounting head as a second assembly mounting head; 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 rotating electrical machine 103 is equipped with two drive wheels 105 from last to down in proper order along its axis, be first drive wheel respectively, second drive wheel and third drive wheel, and first group mounting head (be first mounting head promptly, fourth mounting head and seventh mounting head) also all is equipped with first drive wheel, second group mounting head (be second mounting head promptly, fifth mounting head and eighth mounting head) also all is equipped with the second drive wheel, third group mounting head (be third mounting head promptly, sixth mounting head and ninth mounting head) also all is equipped with the third drive wheel.
The first drive wheel is located at the high position, the second drive wheel is located at the middle position, the third drive wheel is located at the low position, and, in the same rotary electric machine 103, the first drive belt is in driving engagement with all the first drive wheels, the second drive belt is in driving engagement with all the second drive wheels, and the third drive belt is in driving engagement with all the third drive wheels.
Thus, during the rotation of the rotating motor 103, the rotating motor 103 drives the first set of mounting heads to rotate through the first driving belt, drives the second set of mounting heads to rotate through the second driving belt, and drives the third set of mounting heads to rotate through the third driving belt, that is, the rotating motor 103 can simultaneously drive the 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 diverting pulleys 106, a part of the diverting pulleys 106 cooperating with the first drive belt, a part of the diverting pulleys 106 cooperating with the second drive belt, and a part of the diverting pulleys 106 cooperating with the third drive belt.
Such as between the first head and the fourth head, between the second head and the fifth head, between the third head and the sixth head, etc., steering wheels 106 may be provided to increase the wrap angle between each drive belt 104 and the head to which it is driving, and also to avoid each drive belt 104 from affecting other sets of heads not driven by it.
The use of the diverting pulley 106 allows, on the one hand, an increase in the wrap angle between the drive belt 104 and the placement head driven by this drive belt 104, and on the other hand, a separation of the drive belt 104 from the placement head not driven by this drive belt 104.
The above is a detailed explanation of the present invention for three but not limited to three cases of the head assembly 1.
In addition, the invention also provides a chip mounter, as shown in fig. 3 and 4, which includes an X-axis moving module 5, a Y-axis moving module 6, a pressing device 2, a shooting device 3, and the die head assembly 1 as in any one of the above embodiments, wherein the die head assembly 1 is moved in the X-axis and Y-axis directions by the X-axis moving module 5 and the Y-axis moving module 6.
Further, four sets of the pressing device 2, the imaging device 3, and the die attachment 1 are provided, the pressing device 2 is used for moving down the mounting head 102, and the imaging device 3 is used for imaging the orientation of the component adsorbed by the mounting head 102.
The invention provides a matching chip mounting method of a chip mounter aiming at the improved chip mounting assembly 1 and the chip mounter, which comprises the following steps:
s1, moving the head assembly 1 to a material taking position through the X-axis moving module 5 and the Y-axis moving module 6, moving the mounting heads 102 downwards through the pressing device 2, and generating negative pressure at the mounting heads 102 to enable each mounting head 102 to adsorb an element;
wherein the negative pressure effect of the mounting head 102 can be generated by a common negative pressure device 4.
S2, the pressing device 2 resets all the mounting heads 102, and controls the mounting head assembly 1 to move to the mounting position of the first mounting head;
the mounting position of the first mounting head, namely the component adsorbed by the first mounting head, and the position where the component is to be mounted on the circuit board are on the same longitudinal straight line; similarly, the mounting position of the second mounting head, which is referred to later, i.e. the component absorbed by the second mounting head, is on the same longitudinal straight line as the position where the component should be mounted on 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 rotary motor 103 to be started, the rotary motor 103 drives the mounting heads 102 to rotate, and the adsorbed components of the first mounting head rotate to the correct orientation;
the step S3 can be completed during the step S2, all the mounting heads 102 in the step S1 have attracted the components and started to reset until the mounting head assembly 1 moves to the mounting position of the first mounting head, which is a period of time sufficient for the photographing device 3 to complete photographing, the control unit completes the processing, and the rotating motor 103 completes the rotation of the components attracted by the first mounting head to the correct orientation, that is, during the step S2, the step S3 is completed at the same time, and the two steps are integrated together, so that the time spent in the step S6 is directly erased, thereby reducing the time for mounting the 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 component 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 attaching position of the next mounting head;
s6, the control unit controls to start the rotating motor 103, the rotating motor 103 drives the mounting head to rotate, and the element adsorbed by the next mounting head rotates to the correct direction;
s7, the pressing device 2 controls the next mounting head to move downwards to mount the component on the circuit board;
and S8, repeating the steps S5-S7 until all the mounting heads are mounted.
The step S6 can be completed during the step S5, the previous mounting head is reset to the mounting position of the next mounting head, the time 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, during the step S5, the step S6 is completed at the same time, and the two steps are integrated together, so that the time spent in the step S6 is directly erased, thereby reducing the time spent in mounting the single component and improving the efficiency and the yield.
After the steps S2 to S8, the component mounting work of all the mounting heads 102 driven by one of the rotary motors 103 is completed, and the component mounting work of all the mounting heads 102 driven by the other rotary motors 103 can be completed by repeating the operation.
In view of the fact that the same rotating motor 103 drives all the mounting heads 102 driven by the same rotating motor to rotate when rotating, that is, in the process that the rotating motor 103 drives the element adsorbed by the previous mounting head to rotate to the correct orientation, the angle of rotation required by the next mounting head is affected, the present invention 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 control method of the rotating electrical machine 103 is as follows.
A position sensor 108 is provided at each rotary electric machine 103, and the position sensor 108 records the initial position of the rotary electric machine 103; the rotating motor 103 drives the mounting head 102 to rotate, and makes the component 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 adopting this kind of control mode is, no matter how big angle that the rotary motor 103 has controlled the previous mounting head and has rotated, rotary motor 103 all resets to initial position earlier, carries out the rotation work of next mounting head again, so reaches the angle between the mounting head 102 and does not influence each other.
The second control method of the rotating electric machine 103 is as follows.
Shooting clothesThe placement 3 records that the placement angle deviation values from the component adsorbed by the first placement head to the component adsorbed by the last placement head controlled by the same rotating motor 103 are α in sequence1、α2、…、αnWherein, α1、α2、…、αnThe mounting angles are all between minus 180 degrees and 180 degrees, n is more than or equal to 2, and the mounting angle deviation value is an angle value required for rotating the current position of the element adsorbed by the mounting head 102 to the correct position;
before the first mounting head is pressed down, the rotating motor 103 drives the mounting head to rotate by an angle of α1Before the second mounting head is pressed down, the rotary motor 103 drives the mounting head to rotate by an angle (α)2-α1) …, before the nth head is pressed down, the rotary motor 103 drives the head to rotate by an angle (α)n-αn-1)。
Will be referred to α1、α2、α3And values are respectively assigned, so that the understanding is facilitated.
Suppose α1＝60°，α2＝-80°，α3And defines that, when viewed from above, the mounting head 102 rotates clockwise to be a positive direction and rotates counterclockwise to be a negative direction, that is, the first mounting head needs to rotate clockwise by 60 ° to reach the correct position, the second mounting head needs to rotate counterclockwise by 80 ° to reach the correct position, and the third mounting head needs to rotate clockwise by 120 ° to reach the correct position.
After the component adsorbed by the first head is rotated to the correct orientation and the adhering operation is completed, the rotating motor 103 rotates clockwise by 60 ° with respect to the initial position, and at this time, if the component adsorbed by the second head is rotated to the correct orientation, the rotating motor needs to rotate counterclockwise by 140 °, that is (α)2-α1) After the second mounting head finishes the mounting operation, the rotating motor 103 rotates 80 ° counterclockwise with respect to the initial position, and at this time, if the component attracted by the third mounting head is rotated to the correct orientation, the component needs to rotate 200 ° clockwise, that is (α)3-α2)。
Although clockwise rotation may be defined as a negative direction and counterclockwise rotation may be defined as a positive direction, the same definition is required for the same rotating electric machine 103.
However, "rotating 200 ° clockwise" is equivalent to "rotating 160 ° counterclockwise", and "rotating 160 ° counterclockwise" can also reduce the angle of rotation of the motor and reduce the time taken, and in view of this, the present invention is further configured as follows.
If (α)n-αn-1) Not less than 180 degrees, the actual angle of rotation of the rotary motor 103 before the nth mounting head is pressed is (α)n-αn-1360 deg.), if (α)n-αn-1) Less than or equal to-180 degrees, the actual rotation angle of the rotating motor 103 is (α)n-αn-1+360°)。
Assuming, as stated above, that (α)n-αn-1) Before the nth mounting head is pressed down, the rotating motor 103 needs to drive the mounting head to rotate 270 ° clockwise, which is also equivalent to that the rotating motor 103 needs to drive the mounting head to rotate 90 ° counterclockwise, that is, (270 ° -360 °) is-90 °, and the above formula is verified.
The actual angle of rotation of the rotary motor 103 is calculated to reduce the rotation stroke of the rotary motor 103, thereby reducing the time taken for the component adsorbed by the mounting head 102 to rotate to the correct orientation and reducing the power consumption of the rotary motor 103.
In the chip mounting method of the chip mounter provided by the invention, the chip mounting assembly 1 comprises a chip mounting bracket 101, a plurality of mounting heads 102 arranged on the chip mounting bracket 101, and a plurality of rotating motors 103 arranged on the chip mounting bracket 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.
Furthermore, the same rotating motor 103 is connected with m driving belts which are respectively a first driving belt, a second driving belt, … and an m-th driving belt, wherein m is more than or equal to 2;
all the mounting heads 102 driven by the same rotating motor 103 are divided into a first group of mounting heads, a second group of mounting heads, … and an m-th group 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 a mth driving belt;
the output shaft of the rotating electric machine 103 is provided with a first driving wheel, a second driving wheel, … and an m-th driving wheel in sequence along the axial direction; the first group of mounting heads is provided with a first driving wheel, the second group of mounting heads is provided with a second driving wheel …, and the mth group of mounting heads is provided with a mth driving wheel;
a first driving wheel of the rotary motor 103 is in driving engagement with a first driving wheel of the first group of mounting heads via a first driving belt, a second driving wheel of the rotary motor 103 is in driving engagement with a second driving wheel of the second group of mounting heads via a second driving belt, …, and an mth driving wheel of the rotary motor 103 is in driving engagement with an mth driving wheel of the mth group of mounting heads via an mth driving belt.
The above is a detailed explanation of the invention of a chip mounting assembly, a chip mounter and a chip mounting method of the chip mounter.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (16)

1. A head assembly comprises a head support, a plurality of mounting heads arranged on the head support, and a plurality of rotating motors arranged on the head support and used for driving the mounting heads to rotate, and is characterized in that each rotating motor drives at least two mounting heads to rotate through at least two driving belts.
2. The head assembly according to claim 1, wherein m driving belts are connected to the same rotating motor, wherein m is a first driving belt, a second driving belt, … and an m-th driving belt, wherein m is greater than or equal to 2;
all the 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 m-th group of mounting heads;
the first group of mounting heads is in transmission fit with a matched rotating motor through a first driving belt, …, and the m-th group of mounting heads is in transmission fit with a matched rotating motor through an m-th driving belt.
3. The head assembly according to claim 2, wherein the output shaft of the rotating motor is provided with a first driving wheel, a second driving wheel, … and an m driving wheel in sequence along the axial direction thereof; the first assembling and mounting head is provided with a first driving wheel, the second assembling and mounting head is provided with a second driving wheel, …, and the mth assembling and mounting head is provided with a mth 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 mth driving wheel of the rotating motor is in transmission fit with the mth driving wheel of the mth group of mounting heads through the mth driving belt.
4. The head assembly according to claim 2, wherein m is 2, and all the mounting heads driven by the same rotary motor are divided into the first group of mounting heads and the second group of mounting heads at intervals.
5. The head assembly as claimed in claim 4, wherein there are two rotating motors, ten mounting heads are provided, and each rotating motor controls the rotation of five mounting heads;
among all the mounting heads driven by the same rotating motor, the first mounting head, the third mounting head and the fifth mounting head are first assembly mounting heads, and the second mounting head and the fourth mounting head are second assembly mounting heads.
6. The head assembly according to claim 4, wherein the mounting head is provided with a longitudinal sliding groove, and the inner wall of the first driving wheel or the second driving wheel mounted on the mounting head is provided with a sliding block which is in sliding fit with the longitudinal sliding groove.
7. The head assembly according to claim 4, characterized in that the same rotary motor is equipped with a plurality of turning wheels, part of which are in driving engagement with the first drive belt and the remaining turning wheels are in driving engagement with the second drive belt;
a 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 mounting head and separating the first driving belt from the second group mounting head;
a steering wheel in driving engagement with the second drive belt is used to increase the wrap angle between the second drive belt and the second set of mounting heads and to separate the second drive belt from the first set of mounting heads.
8. A chip mounter comprising an X-axis moving module, a Y-axis moving module, a pressing device, a photographing device, and the head assembly according to any one of claims 1 to 7, said head assembly being movable in X-axis and Y-axis directions by the X-axis moving module and the Y-axis moving module.
9. The mounter according to claim 8, wherein four sets of said hold-down device, said imaging device, and said head assembly are provided, said hold-down device being configured to move said mounting head downward, said imaging device being configured to image an orientation of a component held by said mounting head.
10. A chip mounting method of a chip mounter is characterized by comprising the following steps:
s1, moving the pasting head assembly to a material taking position through the X-axis moving module and the Y-axis moving module, moving the pasting heads downwards through the pressing device, and generating negative pressure at the pasting heads to enable each pasting head to adsorb an element;
s2, resetting all the mounting heads by the pressing device, and moving the head 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, and sending the orientation conditions to the control unit, wherein the control unit controls to start the rotating motor, the rotating motor drives the mounting heads to rotate, and the adsorbed components of the first mounting head rotate to the correct orientation;
s4, the pressing device controls the first mounting head to move downwards and mounts the component 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 attaching position of the next mounting head;
s6, the control unit controls to start the rotating motor, the rotating motor drives the mounting head to rotate, and the element adsorbed by the next mounting head rotates to the correct orientation;
s7, the pressing device controls the next mounting head to move downwards, and the component is mounted on the circuit board;
and S8, repeating the steps S5-S7 until all the mounting heads are mounted.
11. The method of claim 10, wherein the step S3 is performed during the step S2; the step S6 is completed during the step S5.
12. A mounting method for a mounter according to claim 10, wherein each of the rotary motors is provided with a position sensor, and the position sensor records an initial position of the rotary motor;
the rotary motor drives the mounting heads to rotate, the element adsorbed by the previous mounting head is made to rotate to the correct orientation, and after the mounting head finishes mounting work, the control unit controls the rotary motor to reset to the initial position.
13. The mounting method of claim 10, wherein the camera records the mounting angle deviation values of the component adsorbed by the first mounting head to the component adsorbed by the last mounting head controlled by the same rotating motor as α1、α2、…、αnWherein, α1、α2、…、αnAll are between-180 degrees and 180 degrees, n is more than or equal to 2, and the mounting angle deviation value is that the current position of the element adsorbed by the mounting head is rotated to be correctThe angular value required for the position;
before the first mounting head is pressed down, the rotating motor drives the mounting head to rotate by an angle of α1Before the second mounting head is pressed down, the rotary motor drives the mounting head to rotate by an angle (α)2-α1) …, before the nth head is pressed down, the rotary motor drives the head to rotate by an angle (α)n-αn-1)。
14. The pick-and-place method of claim 13, wherein the step of determining (α) is performed by a pick-and-place machinen-αn-1) Not less than 180 degrees, the actual rotation angle of the rotating motor before the nth mounting head is pressed is (α)n-αn-1360 deg.), if (α)n-αn-1) Less than or equal to-180 degrees, the actual rotation angle of the rotating motor is (α)n-αn-1+360°)。
15. A placement method for a placement machine according to claim 10, wherein said placement head assembly includes a placement head holder, a plurality of placement heads mounted on said placement head holder, and a plurality of rotary motors mounted on said placement head holder for driving said placement heads to rotate, each of said rotary motors driving at least two of said placement heads to rotate by means of at least two drive belts.
16. A mounting method for a chip mounter according to claim 15, wherein m drive belts are connected to the same rotating motor, and are respectively a first drive belt, a second drive belt, … and an m-th drive belt, wherein m is greater than or equal to 2;
all the 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 m-th group of mounting heads;
the first group of mounting heads are in transmission fit with the matched rotating motor through a first driving belt, …, and the mth group of mounting heads are in transmission fit with the matched rotating motor through a mth driving belt;
the output shaft of the rotating motor is sequentially provided with a first driving wheel, a second driving wheel, … and an m-th driving wheel along the axial direction of the output shaft; the first assembling and mounting head is provided with a first driving wheel, the second assembling and mounting head is provided with a second driving wheel, …, and the mth assembling and mounting head is provided with a mth 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 mth driving wheel of the rotating motor is in transmission fit with the mth driving wheel of the mth group of mounting heads through the mth driving belt.
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