Capacitor guide pin welding device

Abstract

The invention discloses a capacitor guide pin welding device, and relates to the technical field of capacitor production and processing, and the capacitor guide pin welding device comprises a first material disc, a second material disc, a third material disc and a fourth material disc, a plurality of material grooves II for placing the aluminum stems are formed in the material disc II; the displacement detection mechanism is used for detecting the positions of the charging tray I and the charging tray II; a vision unit; a cross driving mechanism; a welding unit for performing a welding operation; the control host is electrically connected to the alignment detection unit, the visual unit, the cross driving mechanism and the welding unit; the first material grooves and the second material grooves are distributed in the driving direction of the corresponding cross-shaped driving mechanism, and the extending directions of the first material grooves and the extending directions of the second material grooves are opposite. At least one end of the pin extends out of the trough I, and at least one end of the aluminum stem extends out of the trough II; and the pin in the trough I at the preset welding position is used for welding with the aluminum stem in the trough II at the other matched position. The method has the effect of improving the welding quality of the capacitor guide pin.

Description

Technical Field

[0001] The present application relates to the technical field of capacitor production and processing, and in particular to a capacitor guide pin welding device. Background Art

[0002] Capacitors are important components in many circuits. With the advancement of electrification, the demand for capacitors is increasing year by year. Therefore, how to efficiently produce high-quality capacitors is an important demand in the electronic components market.

[0003] The production process of capacitors, such as coiling, can now be automated. The first few steps are often guide pin feeding. The guide pins in this link are not the raw materials of the pins, but the finished materials that have been welded to the aluminum stems. Therefore, their quality has an important impact on the subsequent output yield.

[0004] Since the aluminum stem and pin are small in size, light in weight, and easy to deform, the existing welding equipment often fails to reach the expected position in the expected posture during foot welding, resulting in uneven welding and loose welding. Therefore, the present application proposes a new technical solution. Summary of the invention

[0005] In order to improve the welding quality of capacitor guide pins, the present application provides a capacitor guide pin welding device.

[0006] The present application provides a capacitor guide pin welding device, which adopts the following technical solution: A capacitor guide pin welding device, comprising: A material tray 1, which is provided with a plurality of material slots 1 for placing pins; A second material tray is provided with a plurality of second material slots for placing aluminum stems; A displacement detection mechanism, which is used to detect the positions of the first and second material trays; A visual unit, which is used to collect images of the welding work area; A cross drive mechanism, which has at least two groups, one group is used to drive the first material tray to move, and the other group is used to drive the second material tray to move; A welding unit, which is used to perform welding operations; A control host electrically connected to the alignment detection unit, the vision unit, the cross drive mechanism and the welding unit; Among them, the plurality of said troughs 1 and 2 are arranged along a driving direction of the corresponding cross driving mechanism, and the extension directions of said troughs 1 and 2 are opposite to each other; at least one end of the pin extends out of said trough 1, and at least one end of the aluminum stem extends out of said trough 2; the pin in said trough 1 at a preset welding position is used to be welded with the aluminum stem in another matching position of said trough 2; The control host is configured as follows: Calculate the relative movement parameters that need to be adjusted when the pin and the aluminum stem reach the welding position according to the image data output by the vision unit; The action of the cross drive mechanism is controlled according to the relative movement parameters, and the operation of the welding unit is controlled.

[0007] Optionally, the material tray 1 and the material tray 2 are in a vertical relationship and the material tray 1 is placed horizontally; The side of the second material tray is provided with baffles which are parallel to and close to each other, and a set of the cross drive mechanisms has a drive mechanism 1 for driving the baffles to move along the arrangement direction of the plurality of second material troughs; the upper end of the baffle has a bevel when viewed from the end direction of the second material trough, and the bevel corresponding to the bevel is inclined upward and toward the second material tray; There are at least two material trays 2 distributed vertically, and the driving mechanism 1 is electrically connected to the control host.

[0008] Optionally, the control host is configured as: Define that the identification code of the material slot 1 in the welding position is N, and the identification codes of the other two material slots 1 on the left and right sides of the material slot 1 with the identification code N are N-1 and N+1 respectively; If the pins in slot 1 with identification code N are soldered, slot 1 with identification code N-1 is moved to the position of slot 1 with identification code N, and the identification code is reassigned, the original N-1=N, the original N=N+1; Proceed to the next step; If the pin in slot 1 with identification code N is soldered, slot 1 with identification code N+1 is moved to the position of slot 1 with identification code N-1, and the identification code is reassigned, and the original N+1=N-1; Proceed to the next step; If the pins in slot 1 with identification code N are soldered, slot 1 with identification code N-1 is moved to the position of slot 1 with identification code N, and the identification code is reassigned, the original N-1=N, the original N=N+1; The cycle continues until an active adjustment instruction is received.

[0009] Optionally, the displacement detection mechanism includes two laser distance measuring units, which are respectively located on the sides of the first and second material trays facing away from each other and are respectively used to detect the distance d1 between the first material tray and the distance d2 between the second material tray; The control host is configured as follows: According to the detection value of the laser ranging unit and the relative movement parameter, it is determined whether the pin in the material slot 1 with the identification code N is in contact with the corresponding other aluminum stem. If yes, the process ends; if not, the cross drive mechanism continues to be controlled.

[0010] Optionally, the control host is configured as: Perform image recognition; Extract the outlines of the pins in N-1 and N+1 and the outline of tray 1, and calculate the pin extension length L1; Extract the corresponding aluminum stem contour and tray 2, and calculate the aluminum stem extension length L2; The detection value of the laser ranging unit is defined as L3; Let the relative movement parameter = (d-d1-d2)-(L1+L2); where d is a preset constant.

[0011] Optionally, it further includes a tidying mechanism, the tidying mechanism includes a tail push plate and a driving mechanism 2 for driving the tail push plate to move, and one tidying mechanism is installed on each of the first and second material trays; The tail push plate on the first material tray is located on the side of the first material tray away from the second material tray; The tail push plate on the second material tray is located on the side of the second material tray away from the first material tray; The second driving mechanism is electrically connected to the control host.

[0012] Optionally, the welding unit includes a robotic arm and a welding gun mounted on the robotic arm, and the control host includes a PLC control cabinet and a production line main computer, the PLC control cabinet is electrically connected to the robotic arm, a cross drive mechanism, a displacement detection mechanism and the welding gun, and the production line main computer is electrically connected to the PLC control cabinet and the visual unit.

[0013] Optionally, the control host is connected to a portable terminal via the cloud and the control host is configured to send data during the welding process to the cloud.

[0014] In summary, the present application includes the following beneficial technical effects: the pins and aluminum stems can be placed on tray one and tray two respectively, and the visual analysis technology can be used to analyze whether the end positions of the pins and aluminum stems welded to each other need to be adjusted. When adjustment is needed, the cross drive mechanism is controlled to be fine-tuned according to the relative movement parameters calculated by the analysis, so that the pins and aluminum stems to be welded are close to and in contact with each other, so as to reduce uneven welding and loose welding, and improve the welding quality of the capacitor guide pins. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the device; Figure 2 It is a schematic diagram of the control structure of the device; Figure 3 yes Figure 1 Schematic diagram of Part A of the method.

[0016] Explanation of the accompanying drawings: 1. Material tray one; 11. Material trough one; 2. Material tray two; 21. Material trough two; 22. Baffle; 23. Drive mechanism one; 3. Displacement detection mechanism; 31. Laser ranging unit; 4. Vision unit; 5. Cross drive mechanism; 6. Welding unit; 7. Control host; 8. Structuring mechanism; 81. Tail push plate; 82. Drive mechanism two; 9. Portable terminal. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-3 This application is described in further detail.

[0018] The embodiment of the present application discloses a capacitor guide pin welding device.

[0019] Reference Figure 1-2 The capacitive guide needle welding device includes a material tray 1, a material tray 2, a displacement detection mechanism 3, a visual unit 4, a cross driving mechanism 5, a welding unit 6 and a control host 7.

[0020] Among them, the material tray 1 is a horizontal long plate structure, and a plurality of material grooves 11 for placing pins are arranged along the length direction of the material tray 1. The length of the material groove 11 is smaller than the pin so that at least one end of the pin can extend out of the material tray 1 to facilitate welding.

[0021] The material tray 2 is a vertical long plate structure, and a plurality of material slots 21 for placing aluminum stems are arranged along the length direction of the material tray 2; the length of the aluminum stem is greater than the material slots 21, so that at least one end of the aluminum stem can extend out of the material tray 2. The material tray 2 is close to one side of the material tray 1, and the extension directions of the material slots 11 and 21 are facing each other.

[0022] The displacement detection mechanism 3 includes two laser ranging units 31, which are respectively located on the sides of the material tray 1 and the material tray 2 facing away from each other, and are respectively used to detect the distance d1 between itself and the material tray 1, and to detect the distance d2 between itself and the material tray 2.

[0023] It can be understood that the device is arranged on the production line in the workshop, so the device is equipped with a frame for installing the structure; the above-mentioned laser ranging unit 31 is installed in a fixed structure on the frame.

[0024] The visual unit 4 includes several high-definition industrial cameras, which are installed through a fixed structure on the frame. The lenses are directed toward the position where the material tray 1 and the material tray 2 are close to each other, that is, the welding operation area, to capture images.

[0025] There are at least two groups of cross drive mechanisms 5, which can select a cross slide structure and are also fixed by a frame; the sliders of one group of cross drive mechanisms 5 are fixed to tray 1, and the sliders of the other group of cross drive mechanisms 5 are fixed to tray 2 2 through an extended connecting plate.

[0026] The welding unit 6 includes a mechanical arm and a welding gun mounted on the mechanical arm. It is understandable that the mechanical arm and the welding gun are both prior art, so they will not be described in detail. Compared with other structures, the advantages of the mechanical arm in this application are more obvious. The position can be appropriately adjusted when the material tray 1, the material tray 2 and the auxiliary structure are moved to reduce the probability of interference and collision. When in use, the mechanical arm drives the welding gun to weld the pins and aluminum stems at the preset welding position.

[0027] The control host 7 includes a PLC control cabinet and a production line main computer. The PLC control cabinet is electrically connected to the above-mentioned laser distance measuring unit 31, the cross slide, and the welding gun. The production line main computer is electrically connected to the PLC control cabinet and connected to the visual unit 4 and the robot arm to realize automated welding operations. The control host 7 is configured as follows: Calculate the relative movement parameters required to adjust the pin and the aluminum stem when they reach the welding position according to the image data output by the visual unit 4; The cross drive mechanism 5 is controlled to move according to the relative movement parameters, and the welding unit 6 is controlled to operate.

[0028] Usage process: the staff manually or other robotic arms put the pins into the trough 11 of the material tray 1, and put the aluminum stems into the trough 21 of the material tray 2; then, the control host 7 allows one group of cross drive mechanisms 5 to drive the material tray 1 to move, and another group of cross drive mechanisms 5 to drive the material tray 2 to move, so that the trough 11 and the trough 21 are aligned; during the process, the visual analysis shows that the distance between the pins in the aligned trough 11 and the corresponding aluminum stems needs to be adjusted, that is, the relative movement parameters, and the control host 7 controls the cross drive mechanism 5 to move accordingly; after the pins and the aluminum stems are in contact, the welding unit 6 performs welding.

[0029] According to the above content, the device can place the pins and aluminum stems on tray 1 and tray 2 respectively, and analyze whether the end positions of the pins and aluminum stems welded to each other need to be adjusted based on visual analysis technology. When adjustment is needed, the cross drive mechanism 5 is controlled to be fine-tuned according to the relative movement parameters calculated by the analysis, so that the pins and aluminum stems to be welded are close to and in contact with each other, so as to reduce uneven welding and loose welding, so as to improve the welding quality of the capacitor guide pins.

[0030] Reference Figure 1It has been explained above that in this embodiment, the material tray 2 is arranged vertically rather than tilted. Therefore, after the aluminum stems are fed into the material trough 21, if the aluminum stems are not restricted, they may fall when the material tray 2 adjusts its position. Therefore, baffles 22 are arranged on the sides of the material tray 2 so as to be parallel and close to each other.

[0031] A driving mechanism 23 is fixed on the above-mentioned extended connecting plate by a rod structure. The driving mechanism 23 can be a linear motor. The slider of the linear motor is fixed by another rod structure and a baffle 22. The driving direction of the slider of the linear motor is parallel to the arrangement direction of the multiple material troughs 21.

[0032] Reference Figure 3 Furthermore, the upper end of the baffle 22 has a bevel when viewed from the end direction of the second trough 21, and the bevel corresponding to the bevel is inclined upward and toward the second tray 2. According to this configuration, the aluminum stems are placed on the bevel, and the baffle 22 gradually moves up. When there is a second trough 21 on the side, the aluminum stems automatically roll into the second trough 21, so it is relatively convenient to load the second trough 21.

[0033] In this embodiment, there are at least two trays 2 and they are distributed vertically, that is, a plurality of sliders are arranged on the corresponding screw slide structure, and each slider corresponds to a tray 2 2. This setting allows one tray 2 2 to load materials, and the other tray 2 2 cooperates with the tray 1 to weld, that is, the aluminum stem loading does not need to stop for a long time, and the equipment continues to work, so the production and processing efficiency is higher.

[0034] To better match the above settings, the control host 7 is configured as follows: Define that the identification code of the material slot 11 in the welding position is N, and the identification codes of the other two material slots 11 on the left and right sides of the material slot 11 with the identification code N are N-1 and +1 respectively; If the pins in the slot 11 with the identification code N are welded, the slot 11 with the identification code N-1 is moved to the position of the slot 11 with the identification code N, and the identification code is reassigned, the original N-1=N, the original N=N+1; Proceed to the next step; If the pins in the slot 11 with the identification code N are soldered, the slot 11 with the identification code N+1 is moved to the position of the slot 11 with the identification code N-1, and the identification code is reassigned, and the original N+1=N-1; Proceed to the next step; If the pins in the slot 11 with the identification code N are welded, the slot 11 with the identification code N-1 is moved to the position of the slot 11 with the identification code N, and the identification code is reassigned, the original N-1=N, the original N=N+1; The cycle continues until an active adjustment instruction is received.

[0035] The above setting allows one pin in tray 1 to move one position (slot) to the right after welding is completed; another pin to move two positions (slots) to the left after welding is completed; another pin to move one position (slot) to the right again after welding is completed; the above steps are repeated so that tray 1 does not need to pause for a long time for material distribution, and can continuously cooperate with tray 2 for production, effectively improving production efficiency.

[0036] What is more critical is that the pins and aluminum stems to be welded on tray 2 and tray 1 have a stationary moment, which allows the visual unit 4 to collect images in advance and analyze how much fine-tuning is needed for the two, rather than arriving at the welding position for visual analysis, so the welding speed is faster.

[0037] Regarding fine-tuning the material tray 1 and the material tray 2, specifically: the control host 7 is configured as follows: According to the detection value of the laser ranging unit 31 and the relative movement parameter, it is determined whether the pin in the material slot 11 with the identification code N is in contact with the corresponding other aluminum stem. If yes, the process ends; if not, the cross drive mechanism 5 continues to be controlled to move.

[0038] The calculation method of the above-mentioned relative movement parameters is specifically: Extract the outlines of the pins in N-1 and N+1 and the outline of tray 1, and calculate the pin extension length L1 (based on the pixel size in the image); Extract the corresponding aluminum stem contour and tray 2, and calculate the aluminum stem extension length L2; The detection value of the laser ranging unit 31 is defined as L3; The relative movement parameter is set to be (d-d1-d2)-(L1+L2); wherein d is a preset constant value, which can be considered as the distance between the two laser ranging units 31.

[0039] In another embodiment of the present application, in order to prevent incorrect routing, the ends of the pins and aluminum stems to be welded do not extend out and affect production, the device also includes a tidying mechanism 8, the tidying mechanism 8 includes a tail push plate 81 and a driving mechanism 82 for driving the tail push plate 81 to move.

[0040] A regularization mechanism 8 is installed on the tray 1 and the tray 2, respectively. The tail push plate 81 on the tray 1 is located on the side of the tray 1 away from the tray 2; the tail push plate 81 on the tray 2 is located on the side of the tray 2 away from the tray 1. The driving mechanism 2 82 can be a cylinder, an electric cylinder or a hydraulic cylinder. The driving mechanism 2 82 is electrically connected to the control host 7.

[0041] According to the above arrangement, after the pins and the aluminum stems are placed in the material trough 11 and the material trough 21 respectively, the control host 7 can control the driving mechanism 2 82 to drive the corresponding tail push plate 81 to push the pins and the aluminum stems from the tail (i.e. the end not welded), to ensure that both can extend out of the corresponding material tray structure without affecting the normal welding operation process.

[0042] In another embodiment, the control host 7 is wirelessly connected to the portable terminal 9 via the cloud. The portable terminal 9 can be a personal terminal such as a mobile phone. The control host 7 sends the data of the welding process to the cloud. At this time, the staff can also remotely monitor the welding process of the device, so that the use effect is relatively better.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A capacitor guide pin welding device, characterized in that: include: A material tray (1) having a plurality of material slots (11) for placing pins; A second material tray (2) having a plurality of second material slots (21) for placing aluminum stems; A displacement detection mechanism (3) for detecting the positions of the first material tray (1) and the second material tray (2); A visual unit (4), which is used to collect images of the welding work area; A cross drive mechanism (5), which has at least two groups, one group is used to drive the first material tray (1) to move, and the other group is used to drive the second material tray (2) to move; A welding unit (6) for performing welding operations; A control host (7) electrically connected to the alignment detection unit, the visual unit (4), the cross drive mechanism (5) and the welding unit (6); wherein the plurality of material slots one (11) and material slots two (21) are arranged along a driving direction of the corresponding cross drive mechanism (5), and the extension directions of the material slots one (11) and the material slots two (21) are opposite to each other; at least one end of the pin extends out of the material slot one (11), and at least one end of the aluminum stem extends out of the material slot two (21); the pin in the material slot one (11) at a preset welding position is used to be welded with the aluminum stem in the material slot two (21) at another matching position; The control host (7) is configured as follows: Calculating the relative movement parameters required to be adjusted when the pin and the aluminum stem reach the welding position according to the image data output by the vision unit (4); The action of the cross drive mechanism (5) is controlled according to the relative movement parameters, and the operation of the welding unit (6) is controlled.

2. The capacitor guide pin welding device according to claim 1, characterized in that: The material tray 1 (1) and the material tray 2 (2) are in a vertical relationship and the material tray 1 (1) is placed horizontally; The side of the second material tray (2) is provided with baffles (22) which are parallel to and close to each other, and a set of the cross drive mechanisms (5) is provided with a drive mechanism (23) for driving the baffles (22) to move along the arrangement direction of the plurality of second material troughs (21); the upper end of the baffle (22) has a bevel when viewed from the end direction of the second material trough (21), and the bevel corresponding to the bevel is inclined upward and toward the second material tray (2); There are at least two material trays (2) distributed vertically, and the drive mechanism (23) is electrically connected to the control host (7).

3. The capacitor guide pin welding device according to claim 2, characterized in that: The control host (7) is configured as follows: Define that the identification code of the material slot one (11) in the welding position is N, and the identification codes of the other two material slots one (11) on the left and right sides of the material slot one (11) with the identification code N are N-1 and N+1 respectively; If the pins in slot 1 (11) with identification code N are soldered, slot 1 (11) with identification code N-1 is moved to the position of slot 1 (11) with identification code N, and the identification code is reassigned, the original N-1=N, the original N=N+1; Proceed to the next step; If the pins in slot 1 (11) with identification code N are soldered, slot 1 (11) with identification code N+1 is moved to the position of slot 1 (11) with identification code N-1, and the identification code is reassigned, so that N+1=N-1; Proceed to the next step; If the pins in slot 1 (11) with identification code N are soldered, slot 1 (11) with identification code N-1 is moved to the position of slot 1 (11) with identification code N, and the identification code is reassigned, the original N-1=N, the original N=N+1; The cycle continues until an active adjustment instruction is received.

4. The capacitor guide pin welding device according to claim 3, characterized in that: The displacement detection mechanism (3) comprises two laser distance measuring units (31), the two laser distance measuring units (31) being respectively located on mutually opposite sides of the first material tray (1) and the second material tray (2) and respectively used for detecting the distance d1 between the first material tray (1) and the second material tray (2) and for detecting the distance d2 between the second material tray (2); The control host (7) is configured as follows: According to the detection value of the laser ranging unit (31) and the relative movement parameter, it is determined whether the pin in the material slot 1 (11) with the identification code N is in contact with the corresponding other aluminum stem. If so, the process ends; if not, the cross drive mechanism (5) continues to be controlled to move.

5. The capacitor guide pin welding device according to claim 4, characterized in that: The control host (7) is configured as follows: Perform image recognition; Extract the outlines of the pins in N-1 and N+1 and the outline of tray 1 (1), and calculate the pin extension length L1; Extract the corresponding aluminum stem contour and tray 2 (2), and calculate the aluminum stem extension length L2; The detection value of the laser ranging unit (31) is defined as L3; Let the relative movement parameter = (d-d1-d2)-(L1+L2); where d is a preset constant.

6. The capacitor guide pin welding device according to claim 1, characterized in that: It also includes a tidying mechanism (8), the tidying mechanism (8) including a tail push plate (81) and a second driving mechanism (82) for driving the tail push plate (81) to move, and one tidying mechanism (8) is installed on each of the first material tray (1) and the second material tray (2); The tail push plate (81) on the first material tray (1) is located on a side of the first material tray (1) facing away from the second material tray (2); The tail push plate (81) on the second material tray (2) is located on the side of the second material tray (2) facing away from the first material tray (1); The second driving mechanism (82) is electrically connected to the control host (7).

7. The capacitor guide pin welding device according to claim 1, characterized in that: The welding unit (6) comprises a mechanical arm and a welding gun mounted on the mechanical arm, the control host (7) comprises a PLC control cabinet and a production line main computer, the PLC control cabinet is electrically connected to the mechanical arm, the cross drive mechanism (5), the displacement detection mechanism (3) and the welding gun, and the production line main computer is electrically connected to the PLC control cabinet and the visual unit (4).

8. The capacitor guide pin welding device according to claim 1, characterized in that: The control host (7) is connected to a portable terminal (9) via the cloud, and the control host (7) is configured to send data during the welding process to the cloud.

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