TW201800152A - Eddy current sorting machine including a conveying device, a pressing device, a rotary driving device and an inspecting device - Google Patents

Abstract

The present invention provides an eddy current sorting machine configured to sort a work piece. The eddy current sorting machine includes a conveying device, a pressing device, a rotary driving device and an inspecting device. The conveying device includes an indexing plate and at least one carrying unit rotatably mounted to the indexing plate and configured to carry the work piece. The indexing plate can drive the carrying unit to move to an inspection position adjacent to the pressing device, the rotary driving device and the inspecting device. The pressing device includes a pressing unit configured to press the work piece downward for positioning the work piece on the carrying unit. The rotary driving device includes a lateral rotation unit configured to drive the carrying unit to rotate. The inspecting device includes an eddy current inspector configured to inspect the work piece. The eddy current inspector can inspect the work piece when the lateral rotation unit drives the carrying unit to rotate in connection with the work piece. The present invention provides the eddy current sorting machine with innovative structure.

Description

Eddy current sorting machine

The invention relates to a sorting machine, in particular to an eddy current sorting machine for detecting whether a surface of a workpiece such as a screw or a nut is defective.

Screws, nuts and other workpieces are indispensable parts of many articles, equipment, instruments and other products. In the past, when manufacturing, it was necessary to go through the relevant processing steps such as impact and cutting before being guided to the next process. During the manufacturing, processing, and transportation of workpieces, problems such as cracks, breakage, and scratches will inevitably occur on the surface. In order to ensure the quality of shipment, these workpieces must be inspected after manufacturing to confirm whether there are defects on the surface. . And currently, there are many sorting machines for detecting workpieces and distinguishing them from good and bad products on the market. The present invention provides an eddy current sorting machine for consumers to choose and use.

Therefore, an object of the present invention is to provide an eddy current sorting machine with an innovative structure.

Therefore, the eddy current sorting machine of the present invention is used for sorting a workpiece, and includes a guide device, a pressing device, a driving device, and a testing device. The guide device includes a rotatable indexing plate and at least one load-bearing unit rotatably mounted on the indexing plate and capable of carrying the workpiece, and the indexing plate can be driven to drive the indexing plate. The carrier unit moves to a detection position. The pressing device includes a pressing unit which is movably disposed above the detection position and can be used for pressing down the workpiece to be positioned on the bearing unit. The driving device includes a side turning unit movably disposed beside the detection position and used to drive the bearing unit to rotate around its own axis. The detection device includes an eddy current detector disposed adjacent to one side of the detection position and used to detect the workpiece. The eddy current detector can simultaneously rotate the load-bearing unit and the workpiece while the side turning unit drives the bearing unit to rotate with the workpiece. And check the workpiece.

Referring to FIG. 1, FIG. 2 and FIG. 3, an embodiment of the eddy current sorting machine according to the present invention can be used to detect whether there are defects such as cracks, breakages, scratches, and the like on the surface of a plurality of workpieces 1, and distinguish them into good products and non-products Good product, and for the convenience of explanation, only one of the workpieces 1 will be used to explain the sorting process. The workpiece 1 is, for example, a screw, nut, or any part that needs to be inspected for surface defects before leaving the factory. Take the nut as an example.

The eddy current sorting machine includes a guide device 2, a top pressure device 3, a drive device 4, a detection device 5, and a sorting device 6.

The guide device 2 includes an index plate 21 having a substantially circular disk shape, four load-bearing units 22 rotatably mounted on the index plate 21, and one under the index plate 21 and used for driving. The index plate 21 is a servo motor 23 that rotates intermittently. The indexing plate 21 has a plurality of receiving grooves 211 formed on the top surface at an angular interval from each other and located on the same circumference. The bearing units 22 are respectively installed in the receiving grooves 211, and each bearing unit 22 has a rotating seat 221 rotatably mounted on the corresponding receiving groove 211 about its own axis, and a rotatably arranged on the rotation A bearing seat 222 on the top of the seat 221 and used to carry the workpiece 1. It should be noted that the number of the load-bearing units 22 is not limited to four, and may be one, two, three, etc. according to actual requirements. For the sake of explanation, only one of the load-bearing units bearing the workpiece 1 is described below 22 to illustrate.

The indexing plate 21 can be driven by the servo motor 23, which drives the load-bearing units 22 in a feeding position 24 in which the workpiece 1 can be placed, and a washing position 25 for cleaning and processing the workpiece 1 in order. 1. A detection position 26 for detecting the workpiece 1 and a discharge position 27 that can take out the workpiece 1 are moved, that is to say, the workpiece 1 will sequentially pass and pause at the feeding position 24. The washing The clear position 25, the detection position 26 and the discharge position 27. Of course, the eddy current sorting machine also includes a feeding robot arm 7 for sending the workpiece 1 to the feeding position 24, and a discharging machine for removing the workpiece 1 from the discharging position 27 The arm (not shown) will not be described here.

The pressing device 3 includes a pressing unit 31 that is movably disposed above the detection position 26 and can be used to press down the workpiece 1 to be positioned on the bearing unit 22. The pressing unit 31 has a shaft tube 311 extending vertically up and down, a top cover 312 covering the top of the shaft tube 311, a shaft 313 movably and rotatably disposed in the shaft tube 311, and a set A spring 314 inside the shaft tube 311 and located between the top cover 312 and the shaft 313, a detachably disposed on the shaft 313 protruding from the bottom of the shaft tube 311 and used for pressing the workpiece 1 A head 315 and a connecting seat 316 connected to the periphery of the shaft tube 311 and extending to one side. The spring 314 is a compression spring 314 and can provide an elastic force for the shaft 313 to expand and contract relative to the shaft tube 311. The pressing device 3 further includes an upright post 32 and a pneumatic cylinder 33 installed on the upright post 32 and driving the connecting seat 316 to move up and down.

The driving device 4 includes a machine 41 disposed on the side of the detection position 26, a sliding base 42 movably mounted on the machine 41, and a sliding base 42 mounted on the sliding base 42 and used to drive the bearing unit 22. A side turning unit 43 that rotates about its own axis. The sliding seat 42 can drive the side turning unit 43 to move between being adjacent to the bearing unit 22 and leaving the bearing unit 22. The side turning unit 43 has a side turning wheel 431 rotatably mounted on the slide base 42 and adjacent to the detection position 26, a driving wheel 433 rotatably mounted on the slide base 42 and away from the detection position 26, two An O-ring 432 sleeved on the periphery of the side turning wheel 431 and the driving wheel 433 and can contact and push the bearing unit 22, and an O-ring 432 which can be used to drive the driving wheel 433 to rotate to drive the side turning through the O-ring 432 Wheel 431 rotates the motor 434. It should be noted that the number of the O-rings 432 is not limited to two, and may be one, three, etc. according to actual needs.

The detection device 5 includes a moving base 51 movably disposed at one side of the detection position 26, a swinging head 52 rotatably mounted on the moving base 51, and a swinging head 52 provided for detecting the The eddy current detector 53 of the workpiece 1 and a processor 54 electrically connected to the eddy current detector 53. Through the matching of the moving seat 51 and the swinging head 52, the eddy current detector 53 can be driven to be adjacent to the workpiece 1 or away from the workpiece 1. The eddy current detector 53 is provided with several turns of exciting electromagnetic coils (not shown), which can be used to monitor the structure of a variety of metal products and non-destructive nondestructive examination (NDE). It is an exciting electromagnetic coil carrying alternating current. Approaching the workpiece 1 causes the workpiece 1 to cause an alternating magnetic field, and then induces a vortex-like current, and the amplitude and phase of the induced current will change with the difference in the conductor characteristics of the workpiece 1 to achieve the detection function of detecting the workpiece 1 , And a set of test data will be generated after the test. The processor 54 will receive and process the detection data transmitted from the eddy current detector 53 and determine whether the workpiece 1 meets a predetermined specification, and at the same time, it will send out a control signal.

The sorting device 6 is disposed on the side of the discharging position 27, and can receive and judge the control signal transmitted from the processor 54. If the control signal shows that the workpiece 1 meets the predetermined specifications, the sorting device 6 will make The workpiece 1 is conveyed to a defective area (not shown). If the control signal indicates that the workpiece 1 does not meet the predetermined specifications, the sorting device 6 will cause the workpiece 1 to be delivered to a defective area (not shown) .

In use, the servo motor 23 is started to drive the indexing disc 21 to rotate stepwise, and at the same time, the workpiece 1 is clamped to the feeding position 24 through the feeding robot arm 7 adjacent to the feeding position 24. The supporting unit 22 is placed on the supporting base 222. Then, when the index plate 21 is rotated again to move the workpiece 1 to the washing position 25, the workpiece 1 can be cleaned and processed by a cleaning device not shown in the figure. After that, the workpiece 1 is temporarily stopped when the indexing plate 21 is rotated to move the workpiece 1 to the detection position 26 to perform the detection operation of the workpiece 1.

As shown in FIG. 4, during the detection operation, the pressing device 3 drives the pneumatic cylinder 33 to drive the pressing unit 31 downward until the head 315 presses the workpiece 1 and positions the workpiece 1 at Until the bearing unit 22, the slide seat 42 will be driven to drive the side turning unit 43 closer to the bearing unit 22, so that the O-rings 432 abut the rotating seat 221, and then the motor 434 drives the drive The wheel 433 rotates, and the O-rings 432 are frictionally driven to rotate the side wheel 431, and the O-rings 432 are frictionally driven to rotate the rotary base 221 to rotate the workpiece 1 through the bearing base 222. Above the circle, at the same time, the eddy current detector 53 will be driven to move closer to the workpiece 1 and move downward along the outside of the workpiece 1 to comprehensively detect the workpiece 1, that is, the eddy current detector 53 is in the side turning unit 43 While driving the loading unit 22 together with the workpiece 1, the workpiece 1 can be inspected together, and the detection data will be generated and transmitted to the processor 54. After the processor 54 processes and analyzes and judges the workpiece 1 After good or bad, the control signal will be sent to complete the inspection operation At this time, the urging means 3, the rotation drive means 4 and the detecting means 5 will all return to the starting position. Referring to FIG. 1, the indexing disk 21 will rotate again to move the workpiece 1 to the discharging position 27. The sorting device 6 will be matched with the discharging robot arm according to the instruction of the control signal to transfer the workpiece 1. Go to the good product area or the defective product area to complete the sorting operation of the workpiece 1.

In summary, according to the eddy current separator of the present invention, the workpiece 1 can be stably and accurately delivered to the feeding position 24, the washing position 25, the detection position 26, and the discharging by the guide device 2. Position 27, and the workpiece 1 is stably located at the bearing unit 22 through the pressing device 3, and the bearing seat 222 of the guide device 2 and the rod head 315 of the pressing device 3 are removable. The design can be matched with the size of the workpiece 1 to be detected, and the bearing seat 222 and the head 315 can be replaced easily and easily. The elastic cushioning design can prevent the head 315 from directly pressing down and damaging the workpiece 1, so it can protect the workpiece 1 to ensure the detection quality, and also effectively improve the detection stability and accuracy, which is an unprecedented innovation. Structure, so the object of the present invention is indeed achieved.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited in this way, any simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the patent specification of the present invention are still Within the scope of the invention patent.

1‧‧‧Workpiece
2‧‧‧ guide device
21‧‧‧ index plate
211‧‧‧container
22‧‧‧ bearing unit
221‧‧‧Swivel Block
222‧‧‧bearing seat
23‧‧‧Servo Motor
24‧‧‧ Feeding position
25‧‧‧washing position
26‧‧‧ Detection location
27‧‧‧Discharging position
3‧‧‧ jacking device
31‧‧‧ jacking unit
311‧‧‧ shaft tube
312‧‧‧Top cover
313‧‧‧ shaft
314‧‧‧Spring
315‧‧‧ club head
316‧‧‧Connector
32‧‧‧ upright post
33‧‧‧Pneumatic cylinder
4‧‧‧ drive device
41‧‧‧machine
42‧‧‧slide
43‧‧‧Side Turning Unit
431‧‧‧Side Wheel
432‧‧‧O-ring
433‧‧‧Drive Wheel
434‧‧‧Motor
5‧‧‧testing device
51‧‧‧mobile seat
52‧‧‧Swing Head
53‧‧‧Eddy current detector
54‧‧‧Processor
6‧‧‧sorting device
7‧‧‧Feeding robot arm

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is an incomplete top schematic view of an embodiment of the eddy current sorter according to the present invention; FIG. 2 is the An incomplete partial cross-sectional view of the embodiment, which can be used to detect a workpiece; Figure 3 is an enlarged partial partial cross-sectional view of the embodiment, illustrating that a guide device is located at a detection position, and the workpiece is about to be detected And FIG. 4 is a view similar to FIG. 3, illustrating that the guide device is located at the detection position and is detecting the workpiece.

1‧‧‧Workpiece

2‧‧‧ guide device

21‧‧‧ index plate

211‧‧‧container

22‧‧‧ bearing unit

23‧‧‧Servo Motor

24‧‧‧ Feeding position

33‧‧‧Pneumatic cylinder

4‧‧‧ drive device

41‧‧‧machine

42‧‧‧slide

43‧‧‧Side Turning Unit

5‧‧‧testing device

51‧‧‧mobile seat

26‧‧‧ Detection location

3‧‧‧ jacking device

31‧‧‧ jacking unit

32‧‧‧ upright post

52‧‧‧Swing Head

53‧‧‧Eddy current detector

7‧‧‧Feeding robot arm

Claims (10)

An eddy current sorting machine is used for sorting a workpiece, and includes: a guide device, including a rotatable indexing plate, and at least one rotatable mounted on the indexing plate and capable of rotating about its axis. A load-bearing unit for bearing the workpiece, the indexing disk can be driven to move the load-bearing unit to a detection position; a pressing device includes a movably disposed above the detection position and can be used for pressing down The workpiece is positioned on the pressing unit of the bearing unit; a driving device includes a side turning unit movably disposed beside the detection position and used to drive the bearing unit to rotate about its own axis; and a detection device, An eddy current detector for detecting the workpiece is provided adjacent to one side of the detection position, and the eddy current detector can simultaneously perform the rotation of the bearing unit and the workpiece while the side turning unit drives the bearing unit to rotate with the workpiece. Inspection of workpieces. The eddy current sorting machine according to claim 1, wherein the carrying unit of the guide device has a rotating base that can be driven by the side turning unit to rotate around its own axis, and a removably disposed on the rotating unit. A bearing seat on the top of the rotating seat and used for bearing the workpiece. The eddy current sorting machine according to claim 2, wherein the pressing unit of the pressing device has a shaft tube extending vertically up and down, a top cover covering the top of the shaft tube, a movable and movable A shaft rod rotatably disposed in the shaft tube, and a head detachably provided on the shaft rod protruding from the bottom of the shaft tube and used for pressing the workpiece. The eddy current sorting machine according to claim 3, wherein the pressing unit of the pressing device further has a spring disposed in the shaft tube and located between the top cover and the shaft, the spring For a compression spring. The eddy current sorting machine according to claim 4, wherein the pressing unit of the pressing device further has a connecting seat connected to the periphery of the shaft tube and extending to one side, and the pressing device further includes a straight An upright post, and a pneumatic cylinder installed on the upright post and driving the connecting seat to move up and down. The eddy current sorting machine according to claim 1 or 5, wherein the side turning unit of the driving device has a side turning wheel rotatably adjacent to the detection position, and a rotatably away from the detection position. A driving wheel, and at least one O-ring sleeved on the periphery of the side turning wheel and the driving wheel and capable of contacting and pushing the bearing unit. The eddy current sorting machine according to claim 6, wherein the driving device further includes a machine, a slide movably installed on the machine and for the side turning unit, and the slide can drive The side turning unit moves between being adjacent to the bearing unit and leaving the bearing unit. The side turning unit also has a motor for driving the driving wheel. The eddy current sorting machine according to claim 1 or 5, wherein the detection device further comprises a moving base movable relative to the index plate, and a rotatably mounted on the moving base and supplying the eddy current Detector swing head. The eddy current sorting machine according to claim 1, wherein the guide device includes a plurality of the bearing units, and the indexing plate has a plurality of capacities formed on the top surface at an angular interval from each other and for mounting the bearing units. groove. The eddy current sorting machine according to claim 9, wherein the guide device further includes a servo motor that can be used to drive the indexing disc to rotate intermittently, and the indexing disc can be driven by the servo motor to drive the indexing disc. The carrying unit sequentially moves between a feeding position where the workpiece can be placed, a detection position for detecting the workpiece, and a discharging position which can remove the workpiece.