TWI883896B - Height-calibration mechanism, height-calibration method, and processing machine - Google Patents

Abstract

The height-calibration mechanism includes a height-calibration member, a target member, and a detection unit. The height-calibration member has a pressure-receiving area. The target member is at a first height position and pushes the fluid toward the pressure-receiving area via a pressure-providing channel. The detection unit acquires a first pressure by a pressure-detecting member when the target member is at the first height. The target member is movable to the second height along a calibration axis, and the fluid is pushed toward the pressure-receiving area via the pressure-providing channel. The detection unit acquires a second pressure by the pressure-detecting member. A comparison unit receives the amounts of the first pressure and the second pressure sent from the pressure-detecting member to further determine whether the first height and the second height are abnormal or not.

Description

Height calibration mechanism, height calibration method and operating machine

The present invention provides a height calibration mechanism and a height calibration method for accurately calibrating the height position of a device to be inspected.

Nowadays, electronic component processing devices can be conveying devices, appearance inspection devices or printing devices, etc., and use operators (such as conveyors, imagers or printers, etc.) to perform material transfer, appearance inspection or printing operations on electronic components at a preset operating height. However, as electronic components are increasingly designed to be more precise and smaller, the accuracy of the operating height position of the operator is required to be quite high. Taking the conveying device as an example, its operator is an infeed conveyor, and is driven by a driving structure to move in the Z direction to pick up and place electronic components. The driving structure includes multiple components such as a motor, a pulley assembly, an adapter, and a screw seat assembly. In the conveying operation, the infeed conveyor is prone to being unable to accurately move to the preset operating height position due to factors such as the actuation deviation or assembly deviation of multiple components of the driving structure, thereby affecting the accuracy of picking up and placing electronic components, causing problems such as overpressure and damage to electronic components or failure to pick up and place electronic components, thereby affecting the yield rate of electronic components and the smoothness of the operation.

The first object of the present invention is to provide a height calibration mechanism, comprising a height calibration component, a device to be detected and a detection unit. The height calibration component is provided with at least one pressure-bearing area. The device to be detected can be displaced relative to the height calibration component and along the calibration axis to a first height position and a second height position. A pressure supply channel is provided to blow fluid to the pressure-bearing area of the height calibration component at the first height position and the second height position respectively. The detection unit is provided with a pressure detector and a comparator. The pressure detector is arranged in the fluid delivery path defined between the fluid device and the pressure supply channel to obtain the first pressure value when the device to be inspected is at the first height position and the second pressure value when it is at the second height position. The comparator can receive the first pressure value and the second pressure value transmitted by the pressure detector and judge whether the first height position or/and the second height position of the device to be inspected is abnormal, so as to ensure that the device to be inspected can accurately perform the preset operation at the preset operation height position when used as a processing device or an assembly processing device, thereby improving the operation accuracy and yield.

The second object of the present invention is to provide a height calibration method, comprising a first pressure supplying means, a first pressure checking means, a second pressure supplying means, a second pressure checking means and a calibration means; the first pressure supplying means places the device to be detected at a first height position, and blows a fluid toward a pressure-bearing area of the height calibration member through a pressure supplying flow channel; the first pressure checking means obtains a first pressure value when the device to be detected is at the first height position through a pressure checking means of a detection unit; the second pressure supplying means moves the device to be detected from the first height position to the second height position along the calibration axis. The second pressure detecting means uses the pressure detector of the detecting unit to obtain the second pressure value when the device to be inspected is at the second height position; the calibration means uses the comparator of the detecting unit to receive the first pressure value and the second pressure value transmitted by the pressure detector to determine whether the first height position or/and the second height position of the device to be inspected is abnormal; therefore, the operating height position of the device to be inspected can be accurately calibrated, thereby improving the operating accuracy and the operating yield.

The third object of the present invention is to provide a work machine, including a machine, a feeding device, a receiving device, a working device and a central control device. The feeding device is arranged on the machine and is provided with at least one feeder for accommodating at least one electronic component to be processed; the receiving device is arranged on the machine and is provided with at least one receiving device for accommodating at least one processed electronic component; the working device is arranged on the machine and is provided with at least one holder, at least one working device and at least one height adjustment mechanism of the present invention. At least one holder is used to hold electronic components, at least one working device is used for the feeding device, the receiving device or/and the holder to perform a preset operation on the electronic components, and the height adjustment mechanism is used to adjust the first height position or the second height position of at least one device to be inspected; the central control device is used to control and integrate the actions of each device to perform automated operations.

In order to enable you to have a further understanding of the present invention, a preferred embodiment is given below with accompanying drawings:

Please refer to FIG. 1 , the height calibration mechanism of the present invention includes at least one height calibration component, at least one device to be detected and a detection unit.

At least one height adjustment component is provided with at least one pressure-bearing area. According to the operation requirements, the height adjustment component can be an electronic component, a proximity switch, a holder or a calibration block, etc.; the holder can be a material tray, a test seat, or a pre-heating plate; for example, if the device to be inspected is a material feed conveyor, the height adjustment component can be a proximity switch or a material tray; for example, if the device to be inspected is a pressure shifter, the height adjustment component can be a proximity switch or a test seat.

Based on the above, the height calibration component defines a plane relative to the device to be inspected along the calibration axis as a pressure-bearing area; further, the height position of the pressure-bearing area can be a default operating height position of an operator to be used in the future. For example, if the device to be inspected is a feed conveyor in the future, the default operating height position is the operating height position for the feed conveyor to take out electronic components, that is, the height position of the pressure-bearing area of the height calibration component is the operating height position for the feed conveyor to take out materials. In this embodiment, the height calibration component is a proximity switch 11, and is disposed on the machine. The proximity switch 11 defines a horizontal top surface along the calibration axis A as a pressure-bearing area 111. The height position of the pressure-bearing area 111 is the operating height position for the feed conveyor to take out materials (for example, the second height position, which will be described later).

Based on the above, the height adjustment member can be equipped with at least one height adjuster (not shown) to facilitate adjusting the height position of the pressure-bearing area 111.

At least one device to be inspected can be displaced to a first height position and a second height position along the calibration axis relative to the height calibration component, and is provided with at least one pressure supply channel for blowing fluid to the pressure bearing area of the height calibration component. According to the operation requirements, the device to be inspected can be a simple height inspection tool or a workpiece with an operation component. For example, the device to be inspected is a workpiece, and the workpiece can be a conveyor, a crimper, an appearance detector or a printer, etc. The operation component can be a nozzle, an imager or a printer, etc. The operation component can be located at one end or around the pressure supply channel, and can perform a preset operation on the electronic component. For example, the device to be inspected is a feed conveyor, and one end of the pressure supply channel is used as a working part, and the working part is a suction nozzle, which is used to blow fluid to the pressure-bearing area of the alignment height part, and can absorb or release electronic components. For example, the device to be inspected is a printer, and at least one working part for printing can be provided around the base body for printing electronic components.

Furthermore, the device to be inspected includes a transfer carrier and a base body having at least one pressure supply channel, and the transfer carrier can drive the base body to move in at least one Z direction along the calibration axis.

In this embodiment, the device to be inspected is a workpiece, and the workpiece is a feed conveyor 12, which includes a transfer carrier 121, a base 122 having at least one pressure supply channel 123, and at least one workpiece. The transfer carrier 121 is driven by a transfer drive source (not shown) to move along a moving path in the X-Y-Z direction. The transfer drive source is a pressure cylinder, a linear motor, or includes a motor and at least one transmission group, and the transmission group is a belt pulley group or a screw seat group. The moving path of the transfer carrier 121 is provided for configuring a height adjustment component for the proximity switch 11. The base 122 is assembled on the transfer carrier 121, and is driven by the transfer carrier 121 to move in the X-Y direction, and can move in the Z direction along the calibration axis A to a first height position and a second height position. A movable part 124 capable of floating displacement in the Z direction is arranged inside the base 122. A pressure supply channel 123 is provided inside the movable part 124. A fluid delivery path is defined between the pressure supply channel 123 and a fluid device (not shown in the figure). The pressure supply channel 123 is connected to the fluid device through a delivery pipe 125. The fluid device is a gas device (not shown in the figure) to supply a fluid that is a gas. The gas device can deliver gas to the pressure supply channel 123 via the delivery pipe 125. According to the working requirements, the conveying pipe 125 can be connected to a switch (not shown), and the switch is used to switch the pressure channel 123 to blow or suck gas. The feed conveyor 12 uses one end of the pressure channel 123 as a working part, and the working part is a suction nozzle 126, which is used to blow gas to the pressure-bearing area 111 of the proximity switch 11, and when the pressure channel 123 is not blown, it can suck or release electronic components.

The detection unit includes at least one pressure detector 131 and at least one comparator 132. The pressure detector 131 can obtain a first pressure value when the device to be detected is at a first height position and a second pressure value when the device to be detected is at a second height position. The comparator 132 can receive the first pressure value and the second pressure value transmitted by the pressure detector 131 to determine whether the first height position and/or the second height position of the device to be detected is abnormal.

According to the operation requirements, the pressure detector 131 is arranged in the fluid conveying path to detect the pressure value of the fluid. The comparator 132 can judge whether the first height position or the second height position of the device to be inspected is abnormal based on the pressure difference between the first pressure value and the second pressure value.

Furthermore, the comparator 132 can convert the pressure value of the voltage detector 131 into a voltage value for determination.

According to the operation requirements, the detection unit is configured with a database, which has built-in correct first pressure value data when the detector is located at a first height position and correct second pressure value data when it is located at a second height position, for comparison and identification with the actual first pressure value and second pressure value, which is not limited to this embodiment.

Based on the above, the detection unit can detect whether the device to be inspected is abnormal when it is located at other height positions. For example, the detection unit can detect whether the device to be inspected is located at the third height position of the lower pressure calibration component (such as an electronic component).

In this embodiment, the pressure detector 131 is a pressure sensor and is disposed between the gas device of the fluid delivery path and the delivery pipe 125. The pressure detector 131 can sense the first pressure value when the feed conveyor 12 is at the first height position, and sense the second pressure value when the feed conveyor 12 is at the second height position. The comparator 132 can receive the first pressure value and the second pressure value transmitted by the pressure detector 131 for comparison analysis, and determine whether the first height position or the second height position of the feed conveyor 12 is abnormal based on the pressure difference.

Please refer to Figures 2 to 4. The height calibration method of the present invention includes a first pressure supply means, a first pressure detection means, a second pressure supply means, a second pressure detection means and a position calibration means. It also includes a pre-position means. The first use example of the height calibration method of the present invention in combination with the height calibration mechanism is as follows.

The front means sets the height adjustment component in the moving path of the device to be inspected, and the device to be inspected is displaced along the moving path and is relatively to the pressure-bearing area of the height adjustment component, and the fluid is transported to the pressure-supplying channel of the device to be inspected. In this embodiment, the device to be inspected is a feed conveyor 12 that can be displaced in the X-Y-Z direction, and the height adjustment component is a proximity switch 11, and is arranged in the moving path of the feed conveyor 12. The feed conveyor 12 uses a transfer carrier 121 to drive a seat 122 with a pressure-supplying channel 123 and a working component that is a suction nozzle 126 to be displaced in the X-Y direction along the moving path to the top of the proximity switch 11. Since the suction nozzle 126 is one end of the pressure-supplying channel 123, the suction nozzle 126 can be relatively to the pressure-bearing area 111 of the proximity switch 11. The pressure supply channel 123 of the feed conveyor 12 is connected to a fluid device, which is a gas device. The gas device uses a delivery pipe 125 to deliver the fluid, which may be gas, to the pressure supply channel 123 of the feed conveyor 12 along the fluid delivery path.

The first pressure supply means is used to wait for the detector to be located at a first height position, and to blow fluid toward the pressure-bearing area of the height adjustment member through the pressure supply flow channel. Furthermore, the first pressure supply means is used to wait for the detector to be located at the first height position, and the pressure-bearing area of the height adjustment member is not attached. In this embodiment, the device to be inspected is the feed conveyor 12. The feed conveyor 12 uses a transfer carrier 121 to drive a base 122 having a pressure supply channel 123 and a suction nozzle 126 to move along the calibration axis A in the Z direction to the first height position L1. Since the suction nozzle 126 is connected and located at one end of the pressure supply channel 123, the suction nozzle 126 can be opposite to and not in contact with the pressure-bearing area 111 of the proximity switch 11. The gas device delivers gas through the delivery pipe 125 and the pressure supply channel 123 of the feed conveyor 12, so that the suction nozzle 126 of the pressure supply channel 123 of the feed conveyor 12 blows gas toward the pressure-bearing area 111 of the proximity switch 11 at the first height position L1.

The first pressure detecting means uses the pressure detector of the detection unit to obtain the first pressure value when the device to be detected is at the first height position. Furthermore, the first pressure detecting means can obtain the first pressure value of the fluid device, the pressure supply channel, or the fluid supply path between the fluid device and the pressure supply channel by the pressure detector. In this embodiment, the first pressure detecting means uses the pressure detector 131 to be arranged in the fluid delivery path between the gas device and the delivery pipe 125, and communicates with the pressure supply channel 123 of the feed conveyor 12. When the suction nozzle 126 of the pressure supply channel 123 blows gas toward the pressure-bearing area 111 of the proximity switch 11, the pressure detector 131 obtains the first pressure value when the feed conveyor 12 is at the first height position L1.

The second pressure-supplying means is used to displace the device to be inspected from the first height position L1 to the second height position L2 along the calibration axis A, and to blow fluid toward the pressure-bearing area of the height calibration component through the pressure-supplying channel. Furthermore, when the device to be inspected is in a normal state, the second pressure-supplying means is used to fit the height calibration component when the device to be inspected is at the second height position L2. In this embodiment, the feed conveyor 12 uses the transfer carrier 121 to drive the base 122 and the suction nozzle 126 to displace from the first height position L1 to the second height position L2 along the calibration axis A. The second height position L2 is the operating height position where the suction nozzle 126 is preset to fit the electronic component. The feed conveyor 12 uses the suction nozzle 126 at one end of the pressure-supplying channel 123 to blow gas to the pressure-bearing area 111 of the proximity switch 11.

The second pressure detection means uses the pressure detector of the detection unit to obtain the second pressure value when the device to be detected is at the second height position L2. Furthermore, the second pressure detection means can obtain the second pressure value of the fluid device, the pressure supply channel, or the fluid supply path between the fluid device and the pressure supply channel by the pressure detector. In this embodiment, when the suction nozzle 126 of the feed conveyor 12 blows gas to the pressure-bearing area 111 of the proximity switch 11, the pressure detector 131 obtains the second pressure value when the feed conveyor 12 is at the second height position L2.

The calibration means uses the comparator 132 of the detection unit to receive the first pressure value and the second pressure value transmitted by the pressure detector 131 to determine whether the first height position L1 or the second height position L2 of the device to be detected is abnormal. According to the operation requirements, the comparator 132 of the calibration means can determine whether the first height position or the second height position of the device to be detected is abnormal by the change of the pressure difference between the first pressure value and the second pressure value. Of course, the detection unit can be configured with a database, and the database has built-in correct first pressure values of the device to be detected at the first height position L1 and correct second pressure values at the second height position L2 for comparison and determination, which is not limited to this embodiment.

In this embodiment, the calibration means uses a comparator 132 to receive the first pressure value and the second pressure value transmitted by the pressure detector 131, and converts the first pressure value and the second pressure value into voltage values for analysis. If the pressure difference between the first pressure value and the second pressure value meets the preset value, it means that the suction nozzle 126 of the feed conveyor 12 is in contact with the pressure-bearing area 111 of the proximity switch 11. In other words, the second height position L2 of the feed conveyor 12 is correct. , the suction nozzle 126 can accurately perform the material picking operation at the preset material picking operation height position; on the contrary, if the pressure difference between the first pressure value and the second pressure value does not meet the preset value, it means that the suction nozzle 126 of the feed conveyor 12 is not in contact with the pressure-bearing area 111 of the proximity switch 11. In other words, the second height position L2 of the feed conveyor 12 is abnormal, and the suction nozzle 126 cannot accurately perform the material picking operation at the preset material picking operation height position; therefore, the height calibration method of the present invention can quickly and accurately detect whether the height position of the device to be inspected is abnormal, and can even directly use the conveyor with a suction nozzle in combination with the proximity switch to pre-detect whether the operating height position of the suction nozzle is abnormal before executing the conveying of electronic components, so as to save the detection operation sequence and the detection component cost.

Of course, the calibration means can also analyze and determine the displacement of the device to be inspected based on the pressure difference between the first pressure value and the second pressure value, so as to obtain or/and adjust the height position of the device to be inspected.

Please refer to Figures 5 and 6, the second use embodiment of the height calibration method of the present invention is combined with the height calibration mechanism. The difference from the first use embodiment is that the height position of a discharge conveyor 14 is calibrated. The pre-measurement of the height calibration method uses a transfer carrier 141 of the discharge conveyor 14 to drive a base 142 and a suction nozzle 146 having a pressure supply channel 143 to move along the moving path in the X-Y direction to the top of the proximity switch 11, and the gas device uses a delivery pipe 145 to deliver gas to the pressure supply channel 143 of the discharge conveyor 14. When the device to be inspected of the first pressure supply means is located at the first height position L3, it has been attached to the pressure-bearing area of the height calibration member; in this embodiment, the first height position L3 is the height position at which the suction nozzle 146 has been attached to the pressure-bearing area 111. The discharging conveyor 14 of the first pressure supply means uses the transfer carrier 141 to drive the base 142 and the suction nozzle 146 to move along the calibration axis A to the first height position L3, and the suction nozzle 146 of the pressure supply channel 143 has been attached to the pressure-bearing area 111 of the proximity switch 11. The pressure supply channel 143 of the discharging conveyor 14 uses the suction nozzle 146 to blow gas toward the pressure-bearing area 111 of the proximity switch 11. The first pressure detection means uses the pressure detector 131 to obtain the first pressure value when the discharging conveyor 14 is located at the first height position L3. When the device to be inspected of the second pressure supply means is located at the second height position L4, it does not fit the pressure bearing area of the height calibration member; in this embodiment, the second height position L4 is the height position where the suction nozzle 146 does not fit the pressure bearing area 111. The discharging conveyor 14 of the second pressure supply means uses the transfer carrier 141 to drive the base 142 and the suction nozzle 146 to move upward from the first height position L3 to the second height position L4 along the calibration axis A. The suction nozzle 146 of the discharging conveyor 14 does not fit the calibration area 111 of the proximity switch 11, and the pressure supply channel 143 blows gas toward the pressure bearing area 111 of the proximity switch 11 through the suction nozzle 146. The second pressure detection means uses the pressure detector 131 to obtain the second pressure value when the discharging conveyor 14 is located at the second height position L4. The detection unit of the calibration means receives the first pressure value and the second pressure value transmitted by the pressure detector 131 with the comparator 132, and analyzes the pressure difference between the first pressure value and the second pressure value to determine whether the first height position L3 or the second height position L4 of the discharge conveyor 14 is abnormal.

Please refer to Figures 1 to 4. The height adjustment mechanism and height adjustment method of the present invention are applied to an electronic component processing machine, which includes a machine 20, a feeding device 30, a receiving device 40, a processing device 10, and a central control device (not shown). The feeding device 30 is mounted on the machine 20 and is provided with at least one feeder to accommodate at least one electronic component to be processed. The receiving device 40 is mounted on the machine 20 and is provided with at least one receiving device to accommodate at least one processed electronic component. The operating device 10 is arranged on the machine 20, and is provided with at least one supporting device, at least one operating device and at least one height adjustment mechanism of the present invention. The at least one supporting device is used to support the electronic component. The at least one operating device is used for the feeding device 30, the receiving device 40 or/and the supporting device to perform a preset operation on the electronic component. The height adjustment mechanism is used to adjust the first height position or the second height position of at least one device to be inspected. In this embodiment, the holder is a test seat 15 for testing electronic components. At least one operator includes a plurality of operators. The plurality of operators can be an infeed conveyor 12, an outfeed conveyor 14, a pressure shifter 16, an infeed platform 17, and an outfeed platform 18. In the initial state, the infeed conveyor 12, the outfeed conveyor 14, and the pressure shifter 16 can be devices to be inspected. The height adjustment mechanism of the present invention includes at least one height adjustment component, at least one device to be inspected, and a detection unit. In this embodiment, the height adjustment component is a proximity switch 11. The height adjustment mechanism cooperates with the height adjustment method to adjust and determine whether the operating height position of the infeed conveyor 12, the outfeed conveyor 14, and the pressure shifter 16 is abnormal, so as to improve the operation efficiency. Accuracy and yield rate; in the formal operation, the operating device 10 uses the feed conveyor 12 to take out the electronic components to be tested from the feeding device 30, and transfers the electronic components to be tested to the feed carrier 17, the feed carrier 17 carries the electronic components to be tested to the side of the test seat 15, the pressure shifter 16 transfers the electronic components to be tested on the feed carrier 17 to the test seat 15 to perform the test operation, and moves the tested electronic components to the unloading carrier 18, the unloading carrier 18 carries out the tested electronic components, the unloading conveyor 14 takes out the tested electronic components from the unloading carrier 18, and according to the test results, transports the tested electronic components to the receiver of the receiving device 40 for classification and storage. The central control device (not shown) is used to control and integrate the actions of various devices to perform automated operations and achieve the practical benefit of improving operational efficiency.

Working device 10 Proximity switch 11 Pressure bearing area 111 Infeed conveyor 12 Transfer carrier 121 Base 122 Pressure supply channel 123 Movable part 124 Delivery pipe 125 Suction nozzle 126 Pressure detector 131 Comparator 132 Outfeed conveyor 14 Transfer carrier 141 Base 142 Pressure supply channel 143 Delivery pipe 145 Suction nozzle 146 Test base 15 Pressure shifter 16 Infeed platform 17 Outfeed platform 18 Calibration axis A First height position L1, L3 Second height position L2, L4 Machine 20 Feeding device 30 Receiving device 40

Figure 1: Configuration diagram of the height adjustment mechanism of the present invention. Figure 2: Flow chart of the height adjustment method of the present invention. Figures 3 to 4: Schematic diagrams of the first embodiment of the height adjustment mechanism and the height adjustment method of the present invention. Figures 5 to 6: Schematic diagrams of the second embodiment of the height adjustment mechanism and the height adjustment method of the present invention. Figure 7: Schematic diagram of the height adjustment mechanism of the present invention applied to a work machine.

11: Proximity switch

111: Pressure-bearing area

12: Feed conveyor

121:Move vehicle

122: Seat

123: Pressure channel

125:Transmission pipe

126: Suction nozzle

131: Voltage detector

132: Comparator

A: Calibration axis

L1: First height position

Claims (5)

A height calibration method, comprising: First pressure supply means: the device to be tested is located at a first height position, and a pressure supply flow channel is used to blow a fluid toward the pressure-bearing area of the height calibration component; First pressure detection means: the detection unit uses a pressure detector to obtain a first pressure value when the device to be tested is located at the first height position; Second pressure supply means: the device to be tested is displaced from the first height position to the second height position along the calibration axis, and the pressure supply flow channel is used to blow the fluid toward the pressure-bearing area of the height calibration component; Second pressure detection means: the detection unit uses the pressure detector to obtain a second pressure value when the device to be tested is located at the second height position; Calibration means: The detection unit receives the first pressure value and the second pressure value transmitted by the pressure detector through a comparator, and determines whether the first height position or the second height position of the device to be detected is abnormal. In the height calibration method as described in claim 1, when the device to be inspected of the first pressure-applying means is located at the first height position, it is not in contact with the pressure-bearing area of the height calibration component, and when the device to be inspected of the second pressure-applying means is located at the second height position, it is in contact with the pressure-bearing area of the height calibration component. In the height calibration method as described in claim 1, when the device to be inspected of the first pressure-applying means is located at the first height position, it is already in contact with the pressure-bearing area of the height calibration component, and when the device to be inspected of the second pressure-applying means is located at the second height position, it is not in contact with the pressure-bearing area of the height calibration component. The height calibration method as described in claim 1 further includes a pre-positioning means, which sets the height calibration component in the moving path of the device to be tested, and the device to be tested is displaced along the moving path and relative to the pressure-bearing area of the height calibration component, and the fluid is transported to the pressure supply channel of the device to be tested. In the height calibration method as described in claim 1, the comparator of the calibration means can determine whether the first height position or the second height position of the device to be inspected is abnormal based on the change in the pressure difference between the first pressure value and the second pressure value.

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