Electron beam welding detection device of metal strip resistor

Abstract

The utility model discloses an electron beam welding detection device of a metal strip resistor, and relates to the technical field of resistors. The metal strip resistor comprises two electrode strips and a resistor unit arranged between the two electrode strips, the detection device comprises a pre-welding detection table, electron beam welding equipment and a first post-welding detection table. The pre-welding detection table is arranged at the front end of the electron beam welding equipment and comprises a first conveying mechanism for synchronously conveying an electrode strip and a resistor unit to the electron beam welding equipment, and a first detection camera which is arranged above the first conveying mechanism and is used for detecting the electrode strip and the resistor unit; the first post-welding detection table is arranged at the rear end of the electron beam welding equipment and comprises a second conveying mechanism used for bearing the welded metal strip resistor and a second detection camera arranged above the second conveying mechanism and used for detecting the upper surface of the metal strip resistor. The technical scheme has the advantages of continuous automatic detection, high detection efficiency and good detection effect.

Description

Technical Field

[0001] The utility model relates to the technical field of resistors, in particular to an electron beam welding detection device for metal strip resistors. Background Art

[0002] Metal strip resistors are widely used as current sampling resistors in electronic devices and instruments. In their manufacture, the resistor material and electrode materials are connected using methods such as lead-tin soldering and silver soldering. These methods have drawbacks: manual operation, low production efficiency, environmental impact, and material waste. The resulting resistors are large, have low precision, high energy consumption, poor long-term stability, and poor thermal stability. These methods also fail to meet the trend toward miniaturization and environmental friendliness in modern instrumentation.

[0003] Electron beam welding is a high-energy-density welding method that uses an accelerated and focused electron beam to bombard the welding surface placed in a vacuum or non-vacuum, melting the workpiece to achieve welding. It has the advantages of no need for welding rods, not easy to oxidize, good process repeatability and small thermal deformation. It has been used in the production of metal strip resistors. Electron beam welding can provide highly precise welding control, making it easier to maintain the accurate size and resistance characteristics of the metal strip resistor during the welding process.

[0004] However, due to the unique nature of the welding method, some unique defects may occur during the welding process, such as nail tip defects, long void defects, central cracks, and weld deviation caused by magnetic field interference. These defects seriously affect the quality of metal strip resistors, so welding inspection of metal welding strips is very necessary. Utility Model Content

[0005] The purpose of the utility model is to provide an electron beam welding detection device for metal strip resistors in view of the defects and shortcomings of the prior art, which has the advantages of continuous automatic detection, high detection efficiency and good detection effect.

[0006] To achieve the above-mentioned object, the technical solution adopted by the present invention is: an electron beam welding detection device for a metal strip resistor, the metal strip resistor comprising: two electrode strips, and a resistor unit arranged between the two electrode strips;

[0007] It includes: pre-weld inspection station, electron beam welding equipment, and the first post-weld inspection station;

[0008] The pre-weld inspection station is arranged at the front end of the electron beam welding equipment, and includes: a first conveying mechanism for synchronously conveying the electrode strip and the resistor unit to the electron beam welding equipment, and a first inspection camera arranged above the first conveying mechanism for inspecting the electrode strip and the resistor unit;

[0009] The first post-weld inspection station is arranged at the rear end of the electron beam welding equipment, and includes: a second conveying mechanism for receiving the metal strip resistor after welding, and a second inspection camera arranged above the second conveying mechanism for inspecting the upper surface of the metal strip resistor.

[0010] The utility model is further provided with: a second post-weld inspection station;

[0011] The second post-weld inspection station is arranged at the rear end of the first post-weld inspection station, and includes: a third conveying mechanism for receiving the metal strip resistor output by the first post-weld inspection station, and a third inspection camera arranged below the third conveying mechanism for inspecting the lower surface of the metal strip resistor.

[0012] The utility model is further provided that the first conveying mechanism and the second conveying mechanism are both roller conveying structures, including: an upper conveying roller, a lower conveying roller corresponding to the upper conveying roller, and a pressing roller assembly for pressing the lower conveying roller toward the upper conveying roller.

[0013] The utility model is further provided with limit members on the left and right sides of the first conveying mechanism, respectively, and first conveying channels for the electrode strip to pass through are respectively provided on the inner sides of the limit members on both sides, and a second conveying channel for the resistance unit to pass through is provided between the two limit members.

[0014] The present invention is further provided that the second detection camera is installed above the second conveying mechanism through a second movable mechanism, and the second movable mechanism is used to adjust the relative position of the second detection camera and the second conveying mechanism so that the second detection camera can accurately detect the metal strip resistor on the second conveying mechanism.

[0015] The present invention is further provided with that the second movable mechanism includes: a left and right driving member for adjusting the left and right position of the second detection camera, and a top and bottom driving member for adjusting the top and bottom position of the second detection camera.

[0016] The present invention is further provided that the first post-weld inspection table also includes: a detection light source arranged above the second conveying mechanism, used to illuminate the upper surface of the metal strip resistor so that the second detection camera can achieve good detection effect.

[0017] The utility model is further provided that the first post-weld inspection table also includes: a background light source arranged below the second conveying mechanism, for illuminating the lower surface of the metal strip resistor so that the second inspection camera can achieve a good inspection effect.

[0018] The present invention is further configured such that the detection light source is a coaxial light source provided below the second detection camera.

[0019] After adopting the above technical solution, the beneficial effects of the utility model are:

[0020] 1. In the present invention, a second detection camera is arranged above the second conveying mechanism to continuously and automatically detect the upper surface of the metal strip resistor on the second conveying structure. The second detection camera can identify defects on the upper surface of the metal strip resistor (such as nail tip defects, long cavity defects, central cracks, etc.) to ensure the product quality of the metal strip resistor and facilitate the search and processing of unqualified metal strip resistors. At the same time, the second detection camera can also detect the width of the metal strip resistor, compare and analyze the width with the standard width and the width detected by the first detection camera. When the width information of the metal strip resistor is abnormal, it is determined that there is a problem with the quality of the metal strip resistor and a reminder is issued.

[0021] 2. In the present invention, a second detection camera is mounted above the second conveying mechanism via a second movable mechanism. The second movable mechanism is used to adjust the relative position of the second detection camera and the second conveying mechanism so that the second detection camera can accurately detect the metal strip resistors on the second conveying mechanism, maintaining good detection results. Because the metal strip resistors are long and are conveyed along their length, they will bend slightly, causing left and right deviations on the second conveying mechanism. The second detection camera can cooperate with the second movable mechanism to drive the second detection camera to move, allowing the second detection camera to track and detect the metal strip resistors, achieving good detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the utility model from another perspective;

[0025] Figure 3 This is a structural diagram of the utility model's pre-welding inspection station;

[0026] Figure 4 It is a structural diagram of the first post-weld inspection station of the utility model;

[0027] Figure 5It is a structural diagram of the second post-weld inspection station of the utility model;

[0028] Figure 6 It is a structural diagram of the metal strip resistor of the utility model.

[0029] Explanation of the accompanying drawings: 100, pre-weld inspection station; 200, electron beam welding equipment; 300, first post-weld inspection station; 500, metal strip resistor; 510, electrode strip; 520, resistor unit; 110, first conveying mechanism; 120, first detection camera; 310, second conveying mechanism; 320, second detection camera; 311, upper conveying roller; 312, lower conveying roller; 313, pressing cylinder assembly; 130, limiter; 131, first conveying channel; 132, second conveying channel; 330, second movable mechanism; 340, detection light source; 350, background light source; 400, second post-weld inspection station; 410, third conveying mechanism; 420, third detection camera. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below with reference to the accompanying drawings.

[0031] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0032] This embodiment relates to an electron beam welding detection device for a metal strip resistor 500, such as Figure 1-5 As shown, it includes: a pre-weld inspection station 100, an electron beam welding device 200, and a first post-weld inspection station 300.

[0033] like Figure 6 As shown, the metal strip resistor 500 includes: two electrode strips 510, and a resistance unit 520 arranged between the two electrode strips 510; the resistance unit 520 is welded between the two electrode strips 510 by the electron beam welding equipment 200 to form the metal strip resistor 500, so as to achieve a good welding effect.

[0034] The pre-weld inspection station 100 is located at the front end of the electron beam welding equipment 200 and includes a first conveying mechanism 110 and a first inspection camera 120. The first conveying mechanism 110 is used to synchronously convey the two electrode strips 510 and the resistor unit 520 to the electron beam welding equipment 200, so that the electron beam welding equipment 200 can achieve a good welding effect and ensure the welding quality of the metal strip resistor 500. The first inspection camera 120 is located above the first conveying mechanism 110 and is used to inspect the quality of the electrode strips 510 and the resistor unit 520, as well as the width of the electrode strips 510 and the resistor unit 520, to ensure that the electrode strips 510 and the resistor unit 520 meet the welding requirements and achieve a good welding effect.

[0035] The first post-weld inspection station 300 is disposed at the rear end of the electron beam welding equipment 200 and includes a second conveying mechanism 310 and a second inspection camera 320. The second conveying mechanism 310 is used to receive the metal strip resistors 500 welded by the electron beam welding equipment 200 and transport the metal strip resistors 500 to the rear side. The second inspection camera 320 is disposed above the second conveying mechanism 310 to continuously and automatically inspect the upper surface of the metal strip resistors 500 on the second conveying mechanism. The second inspection camera 320 can identify defects on the upper surface of the metal strip resistors 500 (such as nail tip defects, long void defects, central cracks, etc.) to ensure the product quality of the metal strip resistors 500 and facilitate the search and processing of unqualified metal strip resistors 500. At the same time, the second detection camera 320 can also detect the width of the metal strip resistor 500, compare and analyze the width with the standard width and the width detected by the first detection camera 120, and when the width information of the metal strip resistor 500 is abnormal, it is determined that there is a problem with the quality of the metal strip resistor 500 and an alert is issued.

[0036] In this embodiment, the first conveying mechanism 110 and the conveying mechanism are both roller conveying structures. The roller conveying structure includes an upper conveying roller 311, a lower conveying roller 312 disposed below and corresponding to the upper conveying roller 311, and a pressing roller assembly 313 for pressing the lower conveying roller 312 toward the upper conveying roller 311. The pressing roller assembly 313 presses the lower conveying roller 312 toward the upper conveying roller 311, thereby pressing the electrode strip 510 and the resistor unit 520 between the lower conveying roller 312 and the upper conveying roller 311. This ensures that the upper conveying roller 311 and the lower conveying roller 312 can simultaneously contact the conveyed material, maintaining a good conveying effect and conveying direction. At the same time, the lower conveying roller 312 can have a certain degree of compression and smoothing effect on the conveyed material, ensuring that the conveyed material has good flatness, allowing the first conveying mechanism 110 to effectively transfer the electrode strip 510 and the resistor unit 520 to the electron beam welding equipment 200 for good welding.

[0037] As a preferred solution, there are limit members 130 on the left and right sides of the first conveying mechanism 110, and the inner sides of the limit members 130 on both sides are respectively provided with first conveying channels 131 for the electrode strip 510 to pass through, and a second conveying channel 132 for the electrode strip 510 to pass through is provided between the two limit members 130. The first conveying channel 131 and the second conveying channel 132 are arranged on the same horizontal line, so that the electrode strip 510 and the resistor unit 520 are synchronously conveyed to the electron beam welding equipment 200 in a good relative position, so as to achieve a good welding effect and improve the welding quality of the metal strip resistor 500.

[0038] In this embodiment, the second detection camera 320 is mounted above the second conveying mechanism 310 via a second movable mechanism 330. The second movable mechanism 330 is used to adjust the relative position of the second detection camera 320 and the second conveying mechanism 310 so that the second detection camera 320 can accurately detect the metal strip resistor 500 on the second conveying mechanism 310 and maintain good detection results. Because the metal strip resistor 500 is in the shape of an elongated strip and is conveyed along its length, the metal strip resistor 500 will have some bends, resulting in left and right deviations on the second conveying mechanism 310. The second detection camera 320 can cooperate with the second movable mechanism 330 to drive the second detection camera 320 to move, allowing the second detection camera 320 to track and detect the metal strip resistor 500, achieving good detection results. As a preferred solution, the first detection camera 120 is installed above the first conveying mechanism 110 through a first movable mechanism. The first movable mechanism is used to adjust the relative position of the first detection camera 120 and the first conveying mechanism 110, so that the first detection camera 120 can accurately detect the electrode strip 510 and the resistance unit 520 on the first conveying mechanism 110 to achieve good detection effect.

[0039] As a preferred solution, the second movable mechanism 330 includes a left-right drive for adjusting the left-right position of the second detection camera 320 and a top-down drive for adjusting the vertical position of the second detection camera 320, thereby achieving multi-directional adjustment of the second detection camera 320. By adjusting the vertical position of the second detection camera 320 by the top-down drive, the viewing range of the second detection camera 320 can be adjusted to accommodate metal strip resistors 500 of different sizes, thereby ensuring a good detection effect. Of course, in other embodiments, the second movable mechanism 330 can also be configured as other structures to achieve a good adjustment effect of the second detection camera 320.

[0040] In this embodiment, the first post-weld inspection station 300 further includes a detection light source 340 disposed above the second conveying mechanism 310 for illuminating the upper surface of the metal strip resistor 500 so that the second inspection camera 320 can effectively inspect the upper surface of the metal strip resistor 500. The detection light source 340 can provide good inspection lighting for the second inspection camera 320, thereby improving inspection accuracy. As a preferred embodiment, the detection light source 340 is a coaxial light source disposed below the second inspection camera 320, so that the detection light source 340 always illuminates the inspection range of the second inspection camera 320, providing good illumination while avoiding obstruction of the second inspection camera 320's inspection.

[0041] As a preferred solution, the first post-weld inspection station 300 also includes a background light source 350, positioned below the second conveyor mechanism 310, for illuminating the lower surface of the metal strip resistor 500 to facilitate effective inspection by the second inspection camera 320. The inspection light source 340 provides a clean, clear background for the second inspection camera 320, improving the accuracy of detection and recognition by the second inspection camera 320. In this embodiment, the pre-weld inspection station 100 is also equipped with a detection light source 340 and a background light source 350 to enhance the inspection performance of the first inspection camera 120.

[0042] In this embodiment, the inspection device further includes: a second post-weld inspection station 400. The second post-weld inspection station 400 is arranged at the rear end of the first post-weld inspection station 300, and includes: a third conveying mechanism 410 for receiving the metal strip resistor 500 output by the first post-weld inspection station 300, and a third inspection camera 420 arranged below the third conveying mechanism 410 for inspecting the lower surface of the metal strip resistor 500. The structure of the second post-weld inspection station 400 is similar to that of the first post-weld inspection station 300, except that the arrangement direction of the inspection camera is used to inspect the lower surface of the metal strip resistor 500 and identify defects (such as nail tip defects, long cavity defects, middle cracks, etc.) on the lower surface of the metal strip resistor 500. In cooperation with the first post-weld inspection station 300, the second post-weld inspection station 400 performs comprehensive inspection of the upper and lower surfaces of the metal strip resistor 500 after welding, thereby achieving good inspection results.

[0043] The above is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. An electron beam welding detection device for a metal strip resistor (500), the metal strip resistor (500) comprising: Two electrode strips (510), and a resistance unit (520) arranged between the two electrode strips (510); characterized in that it comprises: a pre-welding inspection station (100), an electron beam welding device (200), and a first post-welding inspection station (300); The pre-welding inspection station (100) is arranged at the front end of the electron beam welding equipment (200), and comprises: a first conveying mechanism (110) for synchronously conveying the electrode strip (510) and the resistance unit (520) to the electron beam welding equipment (200), and a first inspection camera (120) arranged above the first conveying mechanism (110) and for inspecting the electrode strip (510) and the resistance unit (520); The first post-weld inspection station (300) is arranged at the rear end of the electron beam welding equipment (200), and comprises: a second conveying mechanism (310) for receiving the metal strip resistor (500) after welding, and a second inspection camera (320) arranged above the second conveying mechanism (310) for inspecting the upper surface of the metal strip resistor (500).

2. The electron beam welding detection device for metal strip resistors (500) according to claim 1, characterized in that: Also included are: a second post-weld inspection station (400); The second post-weld inspection station (400) is arranged at the rear end of the first post-weld inspection station (300), and comprises: a third conveying mechanism (410) for receiving the metal strip resistor (500) output by the first post-weld inspection station (300), and a third inspection camera (420) arranged below the third conveying mechanism (410) for inspecting the lower surface of the metal strip resistor (500).

3. The electron beam welding detection device for metal strip resistors (500) according to claim 1, characterized in that: The first conveying mechanism (110) and the second conveying mechanism (310) are both roller conveying structures, comprising: an upper conveying roller (311), a lower conveying roller (312) corresponding to the upper conveying roller (311), and a pressing roller assembly (313) for pressing the lower conveying roller (312) in the direction of the upper conveying roller (311).

4. The electron beam welding detection device for metal strip resistors (500) according to claim 3, characterized in that: Limiting members (130) are respectively provided on the left and right sides of the first conveying mechanism (110), and first conveying channels (131) for the electrode strip (510) to pass through are respectively provided inside the limiting members (130) on both sides, and a second conveying channel (132) for the resistance unit (520) to pass through is provided between the two limiting members (130).

5. The electron beam welding detection device for metal strip resistors (500) according to claim 1, characterized in that: The second detection camera (320) is installed above the second conveying mechanism (310) through a second movable mechanism (330), and the second movable mechanism (330) is used to adjust the relative position of the second detection camera (320) and the second conveying mechanism (310) so that the second detection camera (320) can accurately detect the metal strip resistor (500) on the second conveying mechanism (310).

6. The electron beam welding detection device for metal strip resistors (500) according to claim 5, characterized in that: The second movable mechanism (330) comprises a left-right driving member for adjusting the left-right position of the second detection camera (320), and a top-bottom driving member for adjusting the top-bottom position of the second detection camera (320).

7. The electron beam welding detection device for metal strip resistors (500) according to claim 1, characterized in that: The first post-weld inspection station (300) further includes a detection light source (340) disposed above the second conveying mechanism (310) and used to illuminate the upper surface of the metal strip resistor (500) so that the second inspection camera (320) can achieve a good inspection effect.

8. The electron beam welding detection device for metal strip resistors (500) according to claim 1, characterized in that: The first post-weld inspection station (300) further comprises: a background light source (350) arranged below the second conveying mechanism (310) and used to illuminate the lower surface of the metal strip resistor (500) so that the second inspection camera (320) can achieve a good inspection effect.

9. The electron beam welding detection device for metal strip resistors (500) according to claim 7, characterized in that: The detection light source (340) is a coaxial light source arranged below the second detection camera (320).

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