CN217183733U - Feeder, feeder feeding position positioning device of feeder, and chip mounter - Google Patents
Feeder, feeder feeding position positioning device of feeder, and chip mounter Download PDFInfo
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- CN217183733U CN217183733U CN202220642669.0U CN202220642669U CN217183733U CN 217183733 U CN217183733 U CN 217183733U CN 202220642669 U CN202220642669 U CN 202220642669U CN 217183733 U CN217183733 U CN 217183733U
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Abstract
The utility model relates to the technical field of feeders, and discloses a feeding position positioning device of a feeder, a feeder and a chip mounter, wherein the feeding position positioning device comprises a feeding wheel, a feeding ratchet wheel, an absolute type circular encoder, a sensor and a control unit, the absolute type circular encoder is coaxially and fixedly arranged on the feeding ratchet wheel, and the feeding ratchet wheel is coaxially and fixedly arranged on the feeding wheel; the sensor is fixedly arranged on the feeder corresponding to the absolute type circular encoder and used for acquiring gear tooth position information of the feeding wheel through the absolute type circular encoder; the control unit is electrically connected with the sensor and used for positioning the feeding position of the feeding wheel. The feeder and the chip mounter adopting the feeding position positioning device can obviously improve feeding precision, and can solve the problem of precision reduction caused by gear abrasion after long-time operation.
Description
Technical Field
The utility model relates to a feeder technical field specifically relates to a feed position positioner, feeder, chip mounter of feeder.
Background
The feeder for the mounter needs to achieve very high repeated feeding precision so as to ensure that the mounting head can smoothly suck up the component and carry out subsequent mounting. In particular, when feeding a resistor-capacitor element of a very small size, a precision of even + -30 μm is required, and the precision is required to be stable for a long time without significant degradation with the increase of the service time of the feeder. However, since the feeder generally adopts a multi-stage gear transmission structure, the gear itself has processing errors and is difficult to improve, and the multi-stage transmission will generate an error accumulation effect, which finally results in that the precision of the feeder is difficult to achieve. Even if the accuracy is achieved, the gear is gradually abraded due to long-time working operation, so that the feeding accuracy is gradually deteriorated, and finally the continuous use cannot be realized. For example, patent CN101502199B discloses using a motor with an encoder to determine the current position of the feeding ratchet wheel, and then using a camera to test the offset and compensate later. However, the transmission ratio of the motor shaft to the feeding ratchet wheel must be 1:1, otherwise, the motor shaft and the feeding ratchet wheel cannot correspond to each other one by one, so that the rotating speed of the motor is low, and the accuracy reduction caused by gear abrasion in long-time operation cannot be compensated.
Therefore, the prior art can not solve the problem of accuracy reduction caused by gear abrasion after long-time operation while improving the feeding accuracy.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem that prior art exists, provide a feed position positioner, feeder, chip mounter of feeder, adopt this feed position positioner's feeder and chip mounter to show and improve the pay-off precision, and can solve the precision decline problem that long-time operation back gear wear leads to.
In order to achieve the above object, one aspect of the present invention provides a feeding position positioning device for a feeder, comprising a feeding wheel, a feeding ratchet wheel, an absolute circular encoder, a sensor and a control unit,
the absolute type circular encoder is coaxially and fixedly arranged on the feeding ratchet wheel, and the feeding ratchet wheel is coaxially and fixedly arranged on the feeding wheel;
the sensor is fixedly arranged on the feeder corresponding to the absolute type circular encoder and used for acquiring gear tooth position information of the feeding wheel through the absolute type circular encoder;
the control unit is electrically connected with the sensor and used for calculating the compensation angle of the feeding ratchet wheel and positioning the feeding position of the feeding wheel.
Preferably, the feeder includes step motor, step motor with the feeding wheel transmission is connected, with the control unit electric connection.
The utility model discloses the second aspect provides a feeder, including step motor, drive wheel and above-mentioned feed position positioner, step motor the drive wheel with feed position positioner's feeding ratchet is the transmission in proper order and is connected.
Preferably, the stepping motor is electrically connected with the control unit of the feeding position positioning device.
Preferably, the driving wheel comprises a primary driving wheel and a secondary driving wheel, the primary driving wheel is in transmission connection with the stepping motor and the secondary driving wheel respectively, and the secondary driving wheel is in transmission connection with the feeding ratchet wheel.
Preferably, the stepper motor is connected to an external power source through a wire, and the external power source is power supply DC 48V.
The utility model discloses the third aspect provides a chip mounter installs above-mentioned feeder, is used for doing the chip mounter feed.
Through the technical scheme, feeding position positioner is through installing an absolute formula circle encoder on the feeding ratchet, use the camera to detect and take notes the deviation volume to the feed position of every ratchet teeth of a cogwheel, and convert the deviation volume into absolute formula circle encoder's compensation angle, the storage is at every feeder during operation in the control panel, it can detect current ratchet teeth of a cogwheel serial number through the absolute formula circle encoder on the ratchet to go up the electricity initial, then the motor rotation is until the circle encoder reachs corresponding position, ensure the feed position accuracy, because the detection be the circle encoder on the feeding ratchet, even the gear has wearing and tearing, can not influence the pay-off precision yet. The feeder and the chip mounter adopting the feeding position positioning device can remarkably improve feeding precision and solve the problem of precision reduction caused by gear abrasion after long-time operation; through the arbitrary drive ratio between motor and the feeding ratchet, can set for in a flexible way according to the requirement of rotational speed and moment, use ordinary step motor (do not take the encoder promptly), the low price practices thrift the cost.
Drawings
Figure 1 is a schematic diagram of the structure of the feeder of the present invention.
Description of the reference numerals
1. Material belt 2 and feeding wheel
3. Feeding ratchet 4, absolute type circular encoder
5. Sensor 6, step motor
7. A primary driving wheel 8 and a secondary driving wheel
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
The utility model provides a first aspect provides a feeding position positioner of feeder, as shown in figure 1, including feed wheel 2, feeding ratchet 3, absolute formula circle encoder 4, sensor 5 and the control unit, absolute formula circle encoder 4 coaxial set firmly in on the feeding ratchet 3, feeding ratchet 3 coaxial set firmly in on the feed wheel 2; the sensor 5 is fixedly arranged on the feeder corresponding to the absolute type circular encoder 4 and is used for acquiring gear tooth position information of the feeding wheel 2 through the absolute type circular encoder 4; the control unit is electrically connected with the sensor 5 and used for positioning the feeding position of the feeding wheel 2.
Further, the feeder includes step motor 6, step motor 6 with the feed wheel 2 transmission is connected, with the control unit electric connection.
The fixed absolute formula circle encoder 4 that sets up on feed position positioner's the feed wheel 2 makes absolute formula circle encoder 4 and feed wheel 2 synchronous rotation, by the angle information of sensor 5 response absolute formula circle encoder 4 to confirm the teeth of a cogwheel positional information of feed wheel 2, the feed position of the 2 teeth of a cogwheel of feed wheel is fixed a position behind the information of 5 conveying of control unit receiving sensor, again according to the rotation of feed position control motor. The feeding position positioning device is characterized in that an absolute type circular encoder 4 is installed on the feeding ratchet wheel 3, and the sensor 5 detects the circular encoder on the feeding ratchet wheel 3, so that the feeding precision cannot be influenced even if the gear of the feeding wheel 2 is abraded.
A second aspect of the present invention provides a feeder, as shown in fig. 1, including a material belt 1, a frame, and a stepping motor 6, a driving wheel, and a feeding position positioning device, which are disposed on the frame, wherein a feeding wheel 2 of the feeding position positioning device is disposed below the material belt 1 to drive the material belt 1 to transmit, the stepping motor 6, the driving wheel, and a feeding ratchet wheel 3 of the feeding position positioning device are sequentially connected in a transmission manner, and the stepping motor 6 is electrically connected to a control unit of the feeding position positioning device; the stepping motor 6 is connected with an external power supply, which is a power supply DC48V (direct current 48V), through a wire.
Further, the driving wheel comprises a primary driving wheel 7 and a secondary driving wheel 8, the primary driving wheel 7 is in transmission connection with the stepping motor 6 and the secondary driving wheel 8 respectively, and the secondary driving wheel 8 is in transmission connection with the feeding ratchet wheel 3. The stepping motor 6 is in transmission connection with the feeding ratchet wheel 3 through a primary transmission wheel 7 and a secondary transmission wheel 8, so that the transmission ratio between the stepping motor and the feeding ratchet wheel 3 is random, and the stepping motor can be flexibly set according to the requirements of rotating speed and torque.
Preferably, the feeder still includes the camera, camera and the control unit electric connection of feeder, sets up the control panel that has detection function and memory function in the control unit, and when the feeder was used for the first time, the feed position of the teeth of a cogwheel of every feeding wheel 2 was detected and the deviation value was recorded through the camera to give the control unit in transit, convert the deviation value into the compensation angle of absolute formula circle encoder 4 through the control unit, the storage is in the control panel. When the feeder works at every time, the power-on is initial, the gear tooth number of the current feeding wheel 2 can be detected through the absolute type circular encoder 4 on the ratchet wheel, and then the stepping motor 6 rotates until the absolute type circular encoder 4 reaches the corresponding position, so that the accuracy of the feeding position is ensured.
The working principle of the feeder is as follows: firstly, the feeding position of the gear teeth of each feeding wheel 2 is detected through a camera, deviation amount is recorded and transmitted to a control unit, and the control unit converts the deviation amount into a compensation angle of an absolute type circular encoder 4 through a control board and stores the compensation angle in the control board. When the feeder works at every time, the sensor 5 senses the angle information of the absolute type circular encoder 4 at the power-on initial stage, so that the gear tooth encoding position information of the feeding wheel 2 corresponding to the absolute type circular encoder 4 is obtained, the gear tooth position information of the feeding wheel 2 is determined, the control unit receives the information transmitted by the sensor 5 and then positions the feeding position of the gear teeth of the feeding wheel 2, the rotation of the stepping motor 6 is controlled according to the feeding position and the compensation angle, the stepping motor 6 is in transmission connection with the feeding ratchet wheel 3 through the primary driving wheel 7 and the secondary driving wheel 8, the feeding ratchet wheel 3 rotates to reach the preset angle until the absolute type circular encoder 4 reaches the preset angle according to any transmission ratio between the feeding ratchet wheel 3, namely, the gear teeth of the feeding wheel 2 are driven to reach the corresponding position, and the material belt 1 is driven to reach the specified position through the gear teeth of the feeding wheel 2, and the accuracy of the feeding position is ensured.
The feeder realizes the unique code and the rotation angle measurement of the 2 teeth of a cogwheel of feeding wheel through installing absolute formula circle encoder 4 on feeding wheel 2, and the structure is succinct, has realized even adopting step motor 6 that does not take the encoder also can guarantee reliable and stable high accuracy feeding. The feeder adopting the absolute type circular encoder 4 to position the feeding position is simple to process and low in cost.
The utility model discloses the third aspect provides a chip mounter installs above-mentioned feeder, is used for doing the chip mounter feed.
In summary, according to the above technical solution, the feeding position positioning device installs an absolute type circular encoder on the feeding ratchet wheel, the camera is used to detect the feeding position of each ratchet wheel tooth and record the deviation amount, and convert the deviation amount into the compensation angle of the absolute type circular encoder, when the feeder is stored in the control panel and works each time, the feeding device is powered on initially, and then the current ratchet wheel tooth number can be detected through the absolute type circular encoder on the ratchet wheel, and then the motor rotates until the circular encoder reaches the corresponding position, so as to ensure the feeding position to be accurate, and even if the gear is worn, the feeding accuracy cannot be affected. The feeder and the chip mounter adopting the feeding position positioning device can remarkably improve feeding precision and solve the problem of precision reduction caused by gear abrasion after long-time operation; through the arbitrary drive ratio between motor and the feeding ratchet, can set for in a flexible way according to the requirement of rotational speed and moment, use ordinary step motor (do not take the encoder promptly), the low price practices thrift the cost.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical scheme of the utility model within the scope of the technical idea, can be right the utility model carry out multiple simple variant and include that each concrete technical feature makes up with any suitable mode. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (7)
1. A feeding position positioning device of a feeder is characterized by comprising a feeding wheel, a feeding ratchet wheel, an absolute type circular encoder, a sensor and a control unit,
the absolute type circular encoder is coaxially and fixedly arranged on the feeding ratchet wheel, and the feeding ratchet wheel is coaxially and fixedly arranged on the feeding wheel;
the sensor is fixedly arranged on the feeder corresponding to the absolute type circular encoder and used for acquiring gear tooth position information of the feeding wheel through the absolute type circular encoder;
the control unit is electrically connected with the sensor and used for positioning the feeding position of the feeding wheel.
2. The feed position positioning device of claim 1, wherein the feeder comprises a stepper motor, the stepper motor being drivingly connected to the feed wheel and electrically connected to the control unit.
3. A feeder comprising a stepper motor, a drive wheel and a feed position locating device as claimed in claim 1, wherein the stepper motor, drive wheel and feed ratchet of the feed position locating device are in driving connection in sequence.
4. The feeder of claim 3, wherein the stepper motor is electrically connected to a control unit of the feed position locating device.
5. A feeder as claimed in claim 3 or 4, wherein the drive wheel comprises a primary drive wheel and a secondary drive wheel, the primary drive wheel being drivingly connected to the stepper motor and the secondary drive wheel respectively, the secondary drive wheel being drivingly connected to the feed ratchet wheel.
6. The feeder of claim 5, wherein the stepper motor is connected by a wire to an external power source, the external power source being power DC 48V.
7. A chip mounter characterized by being equipped with a feeder according to any one of claims 3 to 6 for feeding said chip mounter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220642669.0U CN217183733U (en) | 2022-03-23 | 2022-03-23 | Feeder, feeder feeding position positioning device of feeder, and chip mounter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220642669.0U CN217183733U (en) | 2022-03-23 | 2022-03-23 | Feeder, feeder feeding position positioning device of feeder, and chip mounter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217183733U true CN217183733U (en) | 2022-08-12 |
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ID=82745057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220642669.0U Active CN217183733U (en) | 2022-03-23 | 2022-03-23 | Feeder, feeder feeding position positioning device of feeder, and chip mounter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217183733U (en) |
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2022
- 2022-03-23 CN CN202220642669.0U patent/CN217183733U/en active Active
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