Automatic part identification device

Abstract

The utility model discloses an automatic part identification device, which comprises a fixing frame (1), a connecting frame (2) and a PLC (programmable logic controller), a plurality of proximity switches (4) are arranged on the fixing frame (1), all the proximity switches (4) are arranged at the same height, the connecting frame (2) is fixed on a part bearing device, and the PLC is arranged on the connecting frame (2). At least one proximity switch sensing plate (5) is mounted on the connecting frame (2) and is used for being matched with the proximity switch (4), so that the proximity switch (4) sends a signal to the PLC; and the PLC is used for receiving a signal sent by the proximity switch (4) and identifying the type of the part on the part bearing device according to the received signal. According to the utility model, the part bearing device can be positioned, the position consistency of the parts during scanning is ensured, and the types of the parts can be automatically identified.

Description

[Technical Field]

[0001] This utility model relates to a gantry structure, and more particularly to an automatic parts identification device, belonging to the field of vehicle technology. [Background Technology]

[0002] When measuring thin sheet metal parts using an automated optical measurement workstation, a robot is used for measurement. Each time a measurement is performed, the part being measured must be placed in the same fixed position. Furthermore, a matching matrix hole base plate and measurement support are required to ensure that the measurement support for the same part is always assembled in the same position. This guarantees the accuracy of the teaching process and enables the robot to perform precise measurements.

[0003] For the measurement of large parts carried by integral frames or fixtures, such as side panels and roof covers, where the part length exceeds 3 meters and the fixture weight exceeds 2 tons, exceeding the load-bearing capacity of the matrix hole base plate, manual path planning and scanning measurement are the only options. Ensuring that various large parts from multiple vehicle models are placed in the same location each time, and that the part type can be automatically identified, is a pressing issue that needs to be addressed. [Utility Model Content]

[0004] The purpose of this invention is to provide an automatic part identification device to solve the technical problems in the prior art. It can position the part carrying device, ensure the consistency of the part position during scanning, and automatically identify the part type.

[0005] This utility model provides an automatic part identification device, including a fixed frame, a connecting frame, and a PLC programmable controller. The fixed frame is equipped with a plurality of proximity switches, all of which are set at the same height. The connecting frame is fixed to a part carrying device, and at least one proximity switch sensing plate is installed on the connecting frame. The proximity switch sensing plate is used to cooperate with the proximity switch to send a signal to the PLC programmable controller. The PLC programmable controller is used to receive the signal sent by the proximity switch and identify the type of part on the part carrying device based on the received signal.

[0006] In the aforementioned automatic part identification device, preferably, the fixing frame includes a mounting base plate, mounting columns, and a proximity switch mounting plate. The number of mounting columns is two, and the two mounting columns are fixed at both ends of the top of the mounting base plate. The upper ends of the two mounting columns are fixedly connected by an upper crossbeam, and the proximity switch mounting plate is fixed on the upper crossbeam.

[0007] In the aforementioned automatic part identification device, preferably, the proximity switches are detachably mounted on the proximity switch mounting plate, and the proximity switches are arranged at equal intervals.

[0008] In the aforementioned automatic parts identification device, preferably, each of the two mounting columns is fixed with a limiting seat on the side facing the connecting frame, and the two ends of the connecting frame are fixed with limiting blocks that cooperate with the limiting seats.

[0009] In the aforementioned automatic part identification device, preferably, the limiting seat has a limiting groove extending in the vertical direction, and the limiting block has a limiting boss that engages with the limiting groove.

[0010] In the aforementioned automatic part identification device, preferably, the length of the limiting seat is 200mm-300mm.

[0011] In the aforementioned automatic part identification device, preferably, the connecting frame has multiple sets of sensor plate mounting holes, and each set of sensor plate mounting holes has a proximity switch arranged opposite to it.

[0012] Compared with existing technologies, this utility model includes a fixed frame, a connecting frame, and a PLC programmable controller. The fixed frame is equipped with several proximity switches. The connecting frame is fixed to the part-carrying device and has at least one proximity switch sensing plate mounted on it. The proximity switch sensing plate cooperates with the proximity switches to send signals to the PLC programmable controller. The PLC programmable controller receives the signals from the proximity switches and identifies the type of part on the part-carrying device based on the received signals. When the connecting frame and the fixed frame are connected and aligned, the proximity switch sensing plate on the connecting frame is close to the proximity switch opposite it. The number and position of proximity switch sensing plates are the same on part-carrying devices for the same type of part, while the positions of proximity switch sensing plates are different on part-carrying devices for different types of parts. Therefore, when the connecting frame and the fixed frame are connected and aligned, the PLC programmable controller can identify the type of part based on the received signals, realizing the automatic part type identification function. [Attached Image Description]

[0013] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is the front view of the mounting bracket;

[0016] Figure 3 This is a partial structural diagram of the connecting frame.

[0017] Explanation of reference numerals in the attached drawings: 1. Fixing frame; 2. Connecting frame; 3. Upper crossbeam; 4. Proximity switch; 5. Proximity switch sensing plate; 6. Mounting base plate; 7. Mounting column; 8. Proximity switch mounting plate; 9. Limiting seat; 10. Limiting groove; 11. Limiting boss; 12. Sensing plate mounting hole; 13. Horizontal connecting plate; 14. Base plate fixing hole; 15. Vertical connecting plate; 16. Lower crossbeam; 17. First plate; 18. Second plate; 19. Third plate; 20. Long strip hole; 21.

Detailed Implementation Methods

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] Embodiments of this utility model: such as Figures 1-3 As shown, an automatic part identification device includes a fixed frame 1, a connecting frame 2, and a PLC programmable controller. The fixed frame 1 is equipped with a plurality of proximity switches 4, all of which are set at the same height. The connecting frame 2 is fixed to the part carrying device, and at least one proximity switch sensing plate 5 is installed on the connecting frame 2. The proximity switch sensing plate 5 is used to cooperate with the proximity switches 4 to send signals to the PLC programmable controller. The PLC programmable controller is used to receive the signals sent by the proximity switches 4 and identify the type of part on the part carrying device based on the received signals.

[0020] It should be noted that the number and position of proximity switch sensor plates 5 on the part carrier device of the same type of part are the same, while the position of proximity switch sensor plates 5 on the part carrier device of different types of parts is different. That is to say, the correspondence between proximity switch sensor plates 5 and proximity switches 4 on the part carrier device of the same type of part is unique. The correspondence information between part type and proximity switch 4 is stored in the PLC programmable controller. In this way, the PLC programmable controller can obtain the part type information by receiving the signal from proximity switch 4.

[0021] In this embodiment, the PLC programmable controller, proximity switch 4, and part carrier are all existing technologies and can be purchased directly; their structures will not be described in detail here. The PLC programmable controller and part carrier are not shown in the figures. The PLC programmable controller is connected to the proximity switch 4 via signal lines.

[0022] Specifically, the mounting bracket 1 includes a mounting base plate 6, mounting columns 7, and a proximity switch mounting plate 8. There are two mounting columns 7, which are fixed at both ends of the top of the mounting base plate 6. The upper ends of the two mounting columns 7 are fixedly connected by an upper crossbeam 3, and the proximity switch mounting plate 8 is fixed on the upper crossbeam 3.

[0023] The base plate 6 is a rectangular plate, and base plate fixing holes 15 are opened at the four corners of the base plate 6. The base plate 6 is fixed to the ground by bolt assembly through the four base plate fixing holes 15.

[0024] The mounting columns 7 are made of metal tubes with a rectangular cross-section. The lower ends of the two mounting columns 7 are welded and fixed to the top surface of the base plate 6. The two ends of the upper crossbeam 3 are welded and fixed to the two mounting columns 7. In order to improve the structural strength of the mounting columns 7, a lower crossbeam 17 can also be set between the two mounting columns 7. The two ends of the lower crossbeam 17 are welded and fixed to the lower ends of the two mounting columns 7.

[0025] By setting up the upper crossbeam 3 and the lower crossbeam 17, the stability of the upper and lower ends of the two mounting columns 7 is effectively improved, making the two mounting columns 7 more impact resistant.

[0026] The proximity switch mounting plate 8 is a rectangular plate with three mounting holes near its upper edge. The proximity switch mounting plate 8 is fixedly connected to the upper crossbeam 3 by three screws or rivets.

[0027] The bottom edge of the proximity switch mounting plate 8 is lower than the bottom surface of the upper crossbeam 3. A row of proximity switch mounting holes is provided on the proximity switch mounting plate 8. The proximity switch mounting holes are a certain distance from the bottom surface of the upper crossbeam 3 to facilitate the installation and removal of the proximity switches 4. In this embodiment, the proximity switch mounting holes are preferably provided at equal intervals. Each proximity switch mounting hole can be detachably installed with a proximity switch 4. In this embodiment, 16 proximity switch mounting holes and 16 proximity switches 4 are preferably provided. Of course, the number can be adjusted according to actual needs. Providing 16 proximity switches 4 is only a preferred solution in this embodiment.

[0028] All 16 proximity switches 4 are connected to the PLC programmable controller via signal lines. The PLC programmable controller can identify the order of the 16 proximity switches 4. For example, if the 16 proximity switches 4 are numbered 1-16 from left to right, and two proximity switch sensing plates 5 are close to proximity switches 4 numbered 1 and 3, then these two proximity switches 4 send signals to the PLC programmable controller. After receiving the signals, the PLC programmable controller can identify that the received signals are from proximity switches 4 numbered 1 and 3. If the combination of 1 and 3 corresponds to the top cover, then the PLC programmable controller can identify the current part as the top cover based on the information stored in the program. The PLC programmable controller can also send this information about the top cover to other devices (such as a measuring robot) as needed.

[0029] The connecting frame 2 has multiple sets of sensor plate mounting holes 13. Each set of sensor plate mounting holes 13 consists of two sensor plate mounting holes 13. The two sensor plate mounting holes 13 in the same set are arranged vertically. Each set of sensor plate mounting holes 13 has a proximity switch 4 arranged opposite to it.

[0030] In this embodiment, the proximity switch sensing plate 5 is composed of a first plate 18, a second plate 19, and a third plate 20. The second plate 19 connects the first plate 18 and the third plate 20, forming a U-shaped structure. The first plate 18 and the third plate 20 are parallel. The third plate 20 has an elongated hole 21, into which two bolts are inserted. The two bolts pass through the two sensing plate mounting holes 13 in the same group and are then fixed with nuts. The third plate 20 is used to fix together with the connecting frame 2, and the first plate 18 is used to cooperate with the proximity switch 4.

[0031] The part carrying device can be a part fixing frame or a part gauge in the prior art. Since the height of the part fixing frame and the part gauge are different, the height of the proximity switch sensing plate 5 will also be different after the connecting frame 2 is fixed on different part fixing frames or part gauges. This may cause the proximity switch sensing plate 5 to be higher or lower than the proximity switch 4. Therefore, by setting the elongated hole 21, the height of the proximity switch sensing plate 5 can be adjusted to ensure that the first plate 18 can effectively cooperate with the proximity switch 4.

[0032] The connecting frame 2 consists of a horizontal connecting plate 14 and a vertical connecting plate 16. The horizontal connecting plate 14 has multiple mounting holes for fixing it to the part-bearing device using bolt assemblies. The vertical connecting plate 16 is arranged perpendicularly to the horizontal connecting plate 14 and can be fixed to it by welding or bolts. The sensor plate mounting hole 13 is located on the vertical connecting plate 16.

[0033] In this embodiment, it is preferable to install two proximity switch sensing plates 5 on the vertical connecting plate 16. The more proximity switch sensing plates 5 there are, the more ways they can cooperate with the proximity switch 4, and the more ways they can combine signals. Setting two proximity switch sensing plates 5 is sufficient to meet the requirements. Therefore, considering the cost, there is no need to set more proximity switch sensing plates 5.

[0034] Furthermore, each of the two mounting columns 7 is fixedly provided with a limiting seat 9 on its side facing the connecting frame 2, and both ends of the connecting frame 2 are fixedly provided with limiting blocks 10 that cooperate with the limiting seats 9. The limiting seat 9 has a limiting groove 11 extending in the vertical direction, and the limiting block 10 has a limiting boss 12 that is inserted into the limiting groove 11.

[0035] The cross-sectional shape of the limiting groove 11 can be V-shaped, semi-circular, or trapezoidal, while the cross-sectional shape of the limiting boss 12 is the same as that of the limiting groove 11. In this embodiment, the cross-section of the limiting groove 11 is preferably trapezoidal. Through the cooperation between the limiting boss 12 and the limiting groove 11, the positions of the connecting frame 2 and the fixing frame 1 can be kept consistent after each connection.

[0036] This structural design solves the technical problem in existing technologies where it is impossible to guarantee that parts are always in the same position when they are manually moved.

[0037] Preferably, the length of the limiting seat 9 is 200mm-300mm, and in this embodiment, it is preferably 250mm. The maximum width of the opening of the limiting groove 11 is preferably 60mm. By using the limiting seat 9 of this size, the height difference of the part carrying device can be accommodated, so that the limiting block 10 can cooperate with the limiting seat 9.

[0038] The working principle of this utility model is as follows: When this utility model is applied to a measurement workstation, the PLC programmable controller and the measurement robot can be connected via wired or wireless connection. The measurement robot is existing technology, and its structure and working principle will not be described in detail; it is not shown in the diagram. The operator moves the part-carrying device, which has the part fixed in place, so that the two limiting blocks 10 on the part-carrying device engage with the limiting seats 9 on the two mounting columns 7. When the limiting protrusions 12 on the limiting blocks 10 are fully inserted into the limiting grooves 11 on the limiting seats 9, the part-carrying device moves to the target position. Since two proximity switch sensing plates 5 are preferably provided in this embodiment, two first plates 18 will approach the proximity switches 4. The two proximity switches 4, upon detecting the two first plates 18, will send signals to the PLC programmable controller. After receiving the signals from these two proximity switches 4, the PLC programmable controller can identify the part type corresponding to the signal. The PLC programmable controller then sends the part type to the measurement robot. After receiving the part type information, the measurement robot automatically calls the existing teaching program to perform part scanning and measurement.

[0039] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A parts auto-identification device, characterized by: The utility model relates to a kind of proximity switch sensing plate type automatic identification device, including fixed frame (1), connecting frame (2) and PLC programmable controller, the fixed frame (1) is provided with several proximity switches (4), all the proximity switches (4) are set at the same height, the connecting frame (2) is fixed on part carrier device, at least one proximity switch sensing plate (5) is installed on the connecting frame (2), the proximity switch sensing plate (5) is used to cooperate with the proximity switch (4), so that the proximity switch (4) sends signal to the PLC programmable controller, the PLC programmable controller is used to receive the signal sent by the proximity switch (4) and identifies the part type on the part carrier device according to received signal; The number and position of the proximity switch sensing plate on the part carrier device of the same type part are same.

2. The apparatus of claim 1, wherein: The fixed frame (1) includes installation bottom plate (6), installation column (7) and proximity switch mounting plate (8), the number of installation column (7) is two, two installation column (7) is fixed in the top of installation bottom plate (6) both ends, and the upper end of two installation column (7) is fixedly connected by upper crossbeam (3), and proximity switch mounting plate (8) is fixed on the upper crossbeam (3).

3. The apparatus of claim 2, wherein: The proximity switch (4) is detachably installed on the proximity switch mounting plate (8), and the proximity switch (4) is arranged at equal intervals.

4. The apparatus of claim 2, wherein: Two installation column (7) are fixed with limiting seat (9) on the side surface towards connecting frame (2), and the both ends of connecting frame (2) are fixed with limiting block (10) matched with limiting seat (9).

5. The apparatus of claim 4, wherein: The limiting seat (9) has limiting groove (11) extending in vertical direction, and the limiting block (10) has limiting boss (12) insertedly matched with the limiting groove (11).

6. The apparatus of claim 4, wherein: The length of the limiting seat (9) is 200mm-300mm.

7. The apparatus of claim 1, wherein: A plurality of sensing plate mounting holes (13) are formed on the connecting frame (2), and each group of sensing plate mounting holes (13) is arranged opposite to one proximity switch (4).

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