TWI696055B - The checking system and the method of the material and smt - Google Patents

Abstract

The checking system and the method of the material and SMT with the slot structure, comprises of a server, a slot, a feeder and an input unit. The server coupled to the slot and the input unit. The server stores a station table. The slot includes a first switch and a second switch. The first switch and the second switch coupled to the server. When the first switch has been trigger, the first switch sends a fist position signal to the server. When the second switch has been trigger, the second switch sends a second position signal to the server. A material sets into the feeder. When the feeder sets into the slot, the feeder trigger the first switch. The input unit detect the material and sends the detect signal to the server. When the server receives the detect signal, the server drives the second switch what sends the second signal.

Description

Detection system and detection method for materials and feeding positions

A detection system, method and hardware structure, particularly a detection system and a detection method related to a material and a feeding position.

With the rapid development of integrated circuits, the assembly of circuit boards mostly relies on surface mount technology (Surface Mount Technology) to attach each IC component to the corresponding place. In the past, the staff installed the materials to the feeder in sequence according to the station table. The staff then installs the gun with the material into the corresponding slot.

For the old type placement machine, the most common mistake is that the staff misplaces the material, the gun and the feed slot. The misplaced condition may be that the material is installed in the wrong material gun, the material gun is installed in the wrong feed slot, or the three are all misplaced. Once the misplacement occurs, all the circuits produced in this batch will be scrapped.

In addition, the working habits of each staff member are different, so that the order of installing the material parts and installing the material guns are different. Someone will install all the material parts to each material gun, and the staff will start to install the material gun into the material trough. Some people install the material gun into the material tank after installing a material gun and the material parts. These different installation sequences will produce different detection mechanisms, so it is difficult to apply the same detection mechanism to all installation processes. For example, after installing the parts to the gun in batches, the staff may mess up the order of the guns during the handling of the guns.

Although the new placement machine provides a mechanism that can automatically detect the material, the gun and the feed slot. However, the replacement cost of the new placement machine is much higher than the traditional placement machine, so not every company has the ability to replace the new placement machine. At present, although some manufacturers offer to obtain the production information of the placement machine by means of hardware hook-up, and apply it to the material inspection. Although the cost of hardware environment, setting and certification (license) is lower than the cost of replacing the placement machine, but the long-term payment of certification costs is still a heavy burden.

The invention provides a detection system for a material piece and a feeding position, which is applied to detect whether the material piece and the material gun are installed in the correct material feeding groove.

The detection system of the material parts and the feeding position of the invention comprises: a feeding slot, a servo end, a feeding gun and an input unit. Each feed slot has a contact switch and a reporting unit, which generates a first position signal when the contact switch is triggered, and generates a second position signal when the reporting unit is triggered; the server-side stores a station table, which is used to record each The position of the feed slot corresponding to the material part, the servo end is electrically connected to the contact switch and the return unit; the material gun is used to install the material part, and the material part has an identification unit. When the material gun is installed in the material feed slot, the material gun Trigger the contact switch and send out the first position signal; the input unit is electrically connected to the servo terminal. The input unit is used to detect the identification unit of the material gun and send the material identification signal to the servo terminal; after the servo terminal receives the material identification signal, the servo The terminal sends a confirmation signal to the reporting unit of the feed slot according to the station location table, so that the reporting unit sends the second position signal.

The invention also provides a method for detecting the material and the feeding position, which includes: loading the station table from the servo end; loading the material gun equipped with the material to the first material inlet; the material gun triggers the first input The contact switch of the feed trough makes the contact switch send the first position signal to the servo end; scan the identification unit of the material and send the material identification signal to the servo end; the servo end searches the station table according to the material identification signal to obtain the material The second feed slot where the component should be located; the server sends a confirmation signal to the reporting unit of the second feed slot to make the reporting unit generate the second position signal; the server determines whether the first position signal is the same as the second position signal; If the first position signal is the same as the second position signal, the server updates the station list; if the first position signal is different from the second position signal, the server sends a switching signal.

The invention provides a detection system and a detection method for a material part and a feeding position, which can ensure that the material part is installed in the correct feeding slot without changing the work flow of the production line personnel. In addition, the present invention can also achieve the purpose of industrial automation without making hardware changes to the existing placement machine.

Regarding the features and implementation of the present invention, the preferred embodiment in conjunction with the drawings is described in detail below.

100: detection system

110, α, β, γ, δ, ε: feed gun

111, A, B, C, D: material

112: Identification unit

120: Servo

121: Processing unit

122: storage unit

123: Communication unit

124: Position table

130, I, II, III, IV, V, VI: feeding trough

131: Groove

132: The first opening

133: Second opening

134: contact switch

135: Return unit

140: warning unit

150: input unit

411: the first feed slot

412: second feed slot

Figure 1 is a schematic diagram of the system architecture of the present invention.

Figure 2 is a schematic diagram of the operation of the feed gun and contact switch of the present invention.

Figure 3 is another schematic diagram of the operation of the feed gun and the contact switch of the present invention.

FIG. 4A is a schematic diagram of the operation flow of the material inspection of the present invention.

FIG. 4B is a schematic diagram of the signals and corresponding components of the present invention.

FIG. 5A is a schematic diagram of a detection process when installing a material according to the present invention.

FIG. 5B is a schematic flowchart of the installation material detection of the present invention.

FIG. 5C is a schematic flowchart of the installation material detection of the present invention.

FIG. 6A is another schematic flowchart of the installation material detection of the present invention.

FIG. 6B is another schematic flowchart of the installation material detection of the present invention.

FIG. 6C is another schematic flowchart of the installation material detection of the present invention.

FIG. 7A is a schematic flowchart of another embodiment of the installation material detection of the present invention.

FIG. 7B is a schematic flowchart of another embodiment of the installation material detection of the present invention.

FIG. 7C is a schematic flowchart of another embodiment of the installation material detection of the present invention.

In order to overcome the premise of not changing the current working methods of the staff of the production line and changing the conventional placement machine. The present invention provides a detection system 100 and method applied to the material 111 and the feeding position of the placement machine, which can solve various problems caused by the conventional technology without changing the habits and hardware structure of the worker. The detection system 100 of the present invention can be externally installed in the current placement machine, so the independent detection system 100 will be described below. The detection system 100 of the present invention includes a feed gun 110, a servo 120, a feed slot 130, a warning unit 140, and an input unit 150. The number of the feed slot 130 and the warning unit 140 may be multiple, so it is indicated by the dotted line as a whole in the first figure.

The servo terminal 120 is connected to the feed slot 130, the warning unit 140, and the input unit 150, please cooperate as shown in FIG. The material gun 110 of the present invention is equipped with a material 111. In this embodiment, each material 111 may be provided with a corresponding identification unit 112. In other embodiments, the same type of material 111 may be given to the same recognition unit 112. The identification unit 112 may be a one-dimensional barcode, a two-dimensional barcode, or radio frequency identification (Radio Frequency Identification, RFID).

The server 120 has a processing unit 121, a storage unit 122 and a communication unit 123. The processing unit 121 is electrically connected to the storage unit 122 and the communication unit 123. The storage unit 122 is used for storing the station position table 124, and the station position table 124 records the number of the feed slot 130 corresponding to the material 111, the first position signal, and the second position signal. The server 120 determines whether the material 111 is located in the correct feed slot 130 according to the station table 124 and the received position signal (the determination method will be described in detail later). The communication unit 123 is network-connected to the feed slot 130, the warning unit 140 and the input unit 150. The communication unit 123 is used to transmit the first position signal, the material identification signal, the confirmation signal and the second position signal.

The feed slot 130 of the present invention includes a groove 131, a contact switch 134, and a reporting unit 135. Please refer to FIG. Generally speaking, the number of feed slots 130 depends on the type of placement machine, and the number of feed slots 130 is greater than or equal to the feed gun 110. The feed slot 130 is used to install the feed 111 and the feed gun 110. In the present invention, a first opening 132 and a second opening 133 are provided at the bottom of the groove 131 of the feed slot 130. In other embodiments, a contact switch 134 may be provided on any side wall of the trench 131. The first opening 132 and the second opening 133 are respectively provided with a contact switch 134 and a reporting unit 135, and the opening is shown by the oblique line in FIG. The contact switch 134 may be, but not limited to, a micro switch, or an inductive switch.

In the example of the present invention, the trigger part of the contact switch 134 protrudes from the bottom of the groove 131, so that the contact switch 134 can be triggered when the material gun 110 is installed in the feed slot 130, please refer to Figures 2 and 3 for cooperation. When the contact switch 134 is triggered, the contact switch 134 sends a first position signal to the servo 120. The reporting unit 135 is provided in the second opening 133. After the reporting unit 135 receives a confirmation signal from the server 120, the reporting unit 135 returns the second position signal to the server 120.

The alarm unit is set corresponding to the feed tank 130, so that each feed tank 130 is configured with at least one alarm unit. The alarm unit can be a tri-color light, a buzzer or a display screen. The alarm unit has at least four different state alarm prompt functions. When the detection system 100 is initialized, the server 120 sets all the warning units 140 to the first state. When the server 120 receives the first position signal, the server 120 sets all the warning units 140 to the second state. When the servo 120 determines that the material 111 is installed in the wrong feeding slot 130, the servo 120 sets the warning unit 140 corresponding to the material 111 in which the error occurs to the third state.

The input unit 150 is electrically connected to the servo 120. The input unit 150 is used to detect the identification unit 112 of the material 111. The identification unit 112 records related information of the material 111, for example, the model of the material 111 or the number of the feeding slot 130 to be installed. After the input unit 150 completes the detection and identification unit 112, the input unit 150 encapsulates the information of the identification unit 112 as a material identification signal and sends it to the server 120. The input unit 150 may be implemented by a barcode scanner, an RFID card reader, or a signal receiver.

In order to clearly explain the sorting operation mode of the present invention, please refer to FIG. 4A, which is a schematic diagram of the operation process of the present invention. The material detection method of the present invention includes: step S400: initial detection system, the warning unit is set to the first state by the server; step S410: loading the station table by the server; step S420: loading the material with the material The gun device goes to the first feed slot; step S430: the feed gun triggers the contact switch of the first feed slot, so that the contact switch sends the first position signal to the servo end; step S440: the servo end drives the warning unit to the second state; step S450: Scan the identification unit of the material and send the material identification signal to the server; Step S460: The server searches the station table according to the material identification signal to obtain the second feed slot where the material should be located; Step S470: The server sends a confirmation signal to the reporting unit of the second feed slot, so that the reporting unit generates the second position signal; step S480: the server determines whether the first position signal and the second position signal are the same; step S481: if the first position If the signal is the same as the second position signal, the server updates the station list and detects the next item; and step S482: if the first position signal is different from the second position signal, the server sends a switching signal and drives the warning unit to switch It is the third state.

In order to facilitate the description of the installation relationship between the material 111 and the material inlet 130, in the following description, the first material inlet 411 and the second material inlet 412 will be used as a distinction, as shown in FIG. 4B. The first feeding slot 411 may be the second feeding slot 412, or the first feeding slot 411 is not equivalent to the second feeding slot 412, as shown in FIG. 4B.

First, when the detection system 100 is initialized, the server 120 sets the warning unit 140 Set to the first state. In this example, the warning unit 140 is illustrated by a three-color lamp, which includes a red light, a blue light, and a yellow light, respectively, and the first state is a yellow light flashing. However, the color, flicker, or brightness of each state described in the specification is not limited to this, and those skilled in the art can also use the buzzer and the strength and frequency of the sound as the expression of various states. Alternatively, a display screen can be used as the warning unit 140, and different state prompt messages can be drawn on the screen of the screen.

During the initial period of the server 120, the server 120 can simultaneously load the station table 124. The station table 124 may be established by a staff member, or may be provided from another computer. The station table 124 records the relative records of each item 111 and the feed slot 130. For convenience of description, the material guns 110 described below are all equipped with material pieces 111.

Next, the worker places each feed gun 110 in a different feed tank 130. In this example, the bottom of the gun 110 can touch the contact switch 134 of the groove 131, as shown in FIG. When the contact switch 134 is triggered, the contact switch 134 sends a first position signal to the servo 120. The first position signal is used to mark the feed slot 130 where the gun 110 is located. Here, the feed slot 130 where the gun 110 is located is defined as the first feed slot 411. After the server 120 receives the first position signal, the server 120 also sets the warning unit 140 to the second state, and the second state is defined as a yellow light.

The feed gun 110 may be installed in the feed tank 130 in batches, or may be installed in the feed tank 130 one by one. When the installation of any material gun 110 is completed, the worker can use the input unit 150 to detect the identification unit 112 of the material 111. The input unit 150 will send the material identification signal to the server 120. The material identification signal is used to record the corresponding information of the material 111, such as: material type, material type, or corresponding input slot 130 number.

Next, the server 120 searches the station table 124 according to the material identification signal, and obtains the number of the feed slot 130 corresponding to the material 111. Here, the found feed slot 130 is defined as the second feed slot 412. The server 120 sends a confirmation signal to the reporting unit 135 of the second feeding slot 412 according to the number of the second feeding slot 412, so that the reporting unit 135 generates a second position signal. The second position signal includes the position number of the second feed slot 412. The server 120 receives the second position signal, and the server 120 compares whether the first position signal and the second position signal are the same.

When the first position signal is different from the second position signal, the server 120 will drive The dynamic warning unit 140 is in the third state (that is, the red light flashes), and is used to prompt the worker that the material gun 110 is installed in the wrong material inlet 130. On the contrary, the server 120 will switch the warning unit 140 to the fourth state (that is, the blue light is constantly on), which is used to remind the staff that the feeding slot 130 is the correct material 111. Therefore, the worker can check whether the next feeding tank 130 and the material 111 are correct until all the material guns 110 are completed.

In order to further explain the relevant state of installing the material gun 110 to the material feeding trough 130, the following example is taken as an explanation. In this example, the detection system 100 includes 6 sets of feed tanks 130 and 5 feed guns 110, which are feed tank I, feed tank II, feed tank III, feed tank IV, feed tank respectively V, feed trough VI; part A, part B, part C*2 and part D. The station table 124 records the corresponding relationship between the materials 111 to be installed in each feed slot 130, as described in Table 1:

First, the worker installs the feed gun α with the material A installed in the feed trough I. Here, the first position signal L1_slot_number_1 (material_number, slot_number_1), the second position signal L2 (slot_number_2) and the material identification signal M (material_nnmber) are defined, where "material_number" is the material number and "slot_number_1" is the material gun 110 The installed feed slot number (meaning the first feed slot), "slot_number_2" is the corresponding feed slot number of the reporting unit 135 (meaning the second feed slot). . Therefore, the contact switch 134 of the feed slot I will send the first position signal L1_I(A,I) to the servo terminal 120, as shown in FIG. 5A. The dotted frame in FIG. 5A indicates that the gun α has been installed in the feed tank 1.

Next, the worker uses the input unit 150 to detect the material A and the identification unit 112 to enable the input unit 150 to send the material identification signal M(A) to the server 120, as shown in FIG. 5B. The servo terminal 120 searches for the corresponding feed slot 130 according to the material identification signal M(A). As can be seen from Table 1, the material A corresponds to the feed trough I. The server 120 sends a confirmation signal to the reporting unit 135 of the feed slot I, so that the reporting unit 135 returns the second position signal L2(I) to the server 120, as shown in FIG. 5C. Finally, the server 120 compares whether the first position signal L1_I(A,I) and the second position signal L2(I) are consistent. In this example, the servo terminal 120 determines that the material A is correctly installed in the feed slot I, so the servo terminal 120 will switch the warning unit 140 to the fourth state. Please cooperate with the following table 2:

Take the previous example and cooperate with Figures 6A~6C. Assuming that the worker installs the material B (meaning the material gun β) in the material inlet II, the material inlet II will send the first position signal L1_II(B, II) to the server 120. The worker uses the input unit 150 to detect the material 111 and the identification unit 112, and sends the material identification signal M(B) to the server 120. The server 120 searches the station table 124 according to the material B, and sends a confirmation signal to the reporting unit 135 of the feed slot III, so that the reporting unit 135 transmits the second position signal L2(III) back to the server 120. Since the first position signal L1_II (B, II) and the second position signal L2 (III) are not consistent (as shown in Table 3), the server 120 will switch the warning unit 140 to the third state.

In addition, the present invention further proposes the following embodiments for multiple groups of guns 110 having the same material 111. In this embodiment, the server 120 sets the identification units 112 of the same material 111 to the same group. In other words, the material identification signals of the same material 111 will be regarded as the same. Continuing the previous example, it can be seen in Table 1 that the material C can correspond to the feed tank IV and the feed tank V, respectively.

The worker can install the feed gun γ in either the feed tank IV or the feed tank V. Similarly, the feed gun δ can also be installed in either the feed tank IV or the feed tank V. If the worker installs the feed gun γ in the feed trough IV, the contact switch 134 of the feed trough IV will send to the servo 120 Send the first position signal L1_IV(C,IV), as shown in Figure 7A.

The worker uses the input unit 150 to detect the material 111 and the identification unit 112, and sends the material identification signal M(C) to the server 120. The servo terminal 120 searches for the feed slot IV and the feed slot V corresponding to the discharge part C according to the material identification signal M(C). The servo terminal 120 sends a confirmation signal to the feed tank IV and the feed tank V, so that the feed tank IV and the feed tank V return to the second position signal, as shown in FIGS. 7B and 7C.

It can be seen from Table 4 that after receiving the confirmation signal, the feed tank IV and the feed tank V will return to the second position signals L2(IV) and L2(V). Since the first position signal L1_IV(C,IV) matches the second position signal L2(IV), the servo terminal 120 can regard the material gun δ as being installed at the correct position, and then drive the warning unit 140 to the fourth state.

The present invention provides a detection system 100, a detection method, and a structure of a feed slot 130 for a material 111 and a feeding position, which can ensure that the material 111 is installed in the correct feed slot 130 without changing the workflow of the production line personnel . In addition, the present invention can also achieve the purpose of industrial automation without making hardware changes to the existing placement machine.

Although the present invention is disclosed as the above preferred embodiments, it is not intended to limit the present invention. Any person familiar with similar arts can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of patent protection for inventions shall be subject to the scope defined in the patent application scope attached to this specification.

100: detection system

110: feed gun

111: material

112: Identification unit

120: Servo

121: Processing unit

122: storage unit

123: Communication unit

124: Position table

130: feed slot

131: Groove

132: The first opening

133: Second opening

134: contact switch

135: Return unit

140: warning unit

150: input unit

Claims (8)

A detection system for a material part and a feeding position is characterized by detecting whether the material part and the feeding slot match. The detection system for the material part and the feeding position includes: at least one feeding slot, each of which has a feeding slot A contact switch and a reporting unit, a first position signal is generated when the contact switch is triggered, and a second position signal is generated when the reporting unit is triggered; a server, which stores a station location table, the station location table It is used to record the position of the feed slot corresponding to each material, the servo terminal is electrically connected to the contact switch and the return unit; a material gun is used to install a material, the material has a Identification unit, when the feed gun is installed in the feed slot, the feed gun is triggered to trigger the contact switch and send out the first position signal; and an input unit is electrically connected to the servo terminal, the input unit is used for detection Test the identification unit of the material gun and send a material identification signal to the server; wherein, after the server receives the material identification signal, the server sends a confirmation signal to the incoming material according to the station table The reporting unit of the slot, so that the reporting unit sends the second position signal. The detection system for the material and the feeding position according to claim 1, which includes at least one warning unit electrically connected to the servo end, and each of the feeding troughs is correspondingly provided with a warning unit. The warning units are in a first state. The detection system of the material and the feeding position according to claim 1, wherein the warning unit switches the warning unit to a second state according to the first position signal. The detection system of the material and the feeding position according to claim 2, wherein the server determines whether the feeding slot to which the first position signal belongs matches the position of the feeding slot of the second position signal, when When the first position signal does not match the second position signal, the server sets the warning unit to a third state. A method for detecting a material and a feeding position is characterized by detecting whether the material and the feeding slot are consistent. The method for detecting the material and the feeding position includes: loading a station table from a servo end to install a A feeding gun device of the material piece is connected to a first feeding slot; the feeding gun triggers a contact switch of the first feeding slot, so that the contact switch sends a first A position signal to the server; scan an identification unit of the material and send a material identification signal to the server; the server searches the station list according to the material identification signal to obtain the material A second feed slot that should be there; the server sends a confirmation signal to a reporting unit of the second feed slot to enable the reporting unit to generate a second position signal; the server determines the first position signal Is the same as the second position signal; if the first position signal is the same as the second position signal, the server updates the station location table; and if the first position signal is different from the second position signal, then The server sends a switching signal. The method for detecting a material and a feeding position according to claim 5, wherein the step of loading the station list further includes: the server sets the plurality of warning units to a first state. The method for detecting a material and a feeding position according to claim 6, wherein the step of the servo end receiving the first position signal further comprises: the servo end driving the warning unit to a second state. The method for detecting a material and a feeding position according to claim 5, wherein the step of the server determining whether the first position signal and the second position signal are different further includes: if the first position signal and the second position signal If the two position signals are different, the servo end drives the warning unit to switch to a third state.

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