Conveyor device for the appearance inspection of large dry-type transformers

Abstract

The present invention discloses a conveying device for the appearance detection of large dry-type transformers, belonging to the technical field of conveying equipment. It includes a workbench, on which two linear guide rails are arranged in parallel. A plurality of sliding seats are arranged on the two linear guide rails. Two appearance detection components are arranged on the workbench at intervals. A positioning component is arranged on the sliding seat. The transformer is arranged on the positioning component and sequentially passes through the two appearance detection components along the linear guide rails. When the positioning component is between the two appearance detection components, it drives the transformer to rotate 90 degrees. The present invention can automatically complete the six-sided appearance detection of large dry-type transformers during the conveying process, improve the production and detection efficiency of transformers, and ensure the detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying equipment, and specifically to a conveying device for the appearance detection of large dry-type transformers. Background Art

[0002] The production process of large dry-type transformers involves multiple steps such as core manufacturing, winding, insulation treatment, assembly, and appearance detection. Appearance detection is the last line of defense to avoid defects in the appearance of transformers and ensure the production quality of transformers. To ensure the comprehensiveness of detection, it is necessary to inspect the six sides of the transformer one by one. The traditional inspection method using manual visual observation, on the one hand, requires the transformer to be flipped multiple times. Due to the large weight of the transformer, it is time-consuming and laborious. On the other hand, the situation of missed inspection caused by the negligence of the staff occurs from time to time.

[0003] In the prior art, for example, a six-sided detection device for the appearance of transformers disclosed in the patent document with publication number CN 111229639 A automatically loads and unloads the products to be detected, and is convenient for automatically moving and rotating the products in multiple axes during the detection process, realizing multi-sided and multi-angle detection of the products; another example is the multi-sided detection structure of a six-sided detection device for the appearance of transformers disclosed in the patent document CN 116067985 A, which realizes automatic loading and six-sided detection. However, both of these patent documents detect small transformers and cannot solve the stability problem during the conveying and detection of large dry-type transformers. Summary of the Invention

[0004] In view of this, in order to overcome the deficiencies of the prior art, the present invention provides a conveying device for the appearance detection of large dry-type transformers, which automatically completes the six-sided appearance detection of large dry-type transformers during the conveying process, improves the production and detection efficiency of transformers, and ensures the detection accuracy.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: A conveying device for the appearance detection of large dry-type transformers, including a workbench, two linear guide rails are arranged in parallel on the workbench, a plurality of sliding seats are arranged on the two linear guide rails, two appearance detection components are arranged at intervals on the workbench, a positioning component is arranged on the sliding seat, the transformer is arranged on the positioning component, and sequentially passes through the two appearance detection components along the linear guide rails, and the positioning component drives the transformer to rotate 90 degrees when it is between the two appearance detection components.

[0006] Further, the sliding seat includes two sliding blocks, the two sliding blocks are respectively slidably connected to the two linear guide rails, and the two sliding blocks are connected by two connecting rods.

[0007] Further, the positioning component includes a circular guide rail, a rotating block, a positioning plate and a ejector rod. The circular guide rail is fixedly arranged on the two sliding blocks. Two rotating blocks are slidably connected at opposite positions on the circular guide rail. The positioning plate is fixedly arranged on the rotating block. A groove is formed at the top of the positioning plate. A pressing block is arranged in the groove. The longitudinal section of the pressing block is an inverted isosceles trapezoid and is connected to the bottom surface of the groove through a compression spring. A plurality of through holes are arranged on both sides of the positioning plate, and the through holes communicate with the groove. The ejector rod is connected to the through hole through a spring.

[0008] Further, the two appearance detection components are a first appearance detection component and a second appearance detection component arranged along the conveying direction. The first appearance detection component includes four first cameras, which are respectively arranged above, below, on the left side and on the right side of the two linear guide rails. The second appearance detection component includes two second cameras, which are respectively arranged on the left side and on the right side of the two linear guide rails.

[0009] Further, a sleeve is embedded in the through hole. Limit rings are arranged at the opening edges on both sides of the sleeve. One end of the ejector rod is inserted into the sleeve, and a baffle is arranged on the ejector rod. The part of the ejector rod located in the sleeve is sleeved with the spring. One end of the spring is connected to the baffle, and the other end is connected to the limit ring on the side away from the groove.

[0010] Further, the pressing block protrudes from the groove under the support of the compression spring. A plurality of sliding grooves are arranged on both sides of the pressing block, and the end of the ejector rod is located in the sliding grooves.

[0011] Further, an inductor and a controller are further included. First inductors are arranged on one side of the two appearance detection components respectively for inducting the transformer. When the transformer reaches the induction area, the first inductor sends a signal to the controller, and the controller controls the camera to take pictures.

[0012] Further, both of the rotating blocks are wirelessly connected to the controller. A second inductor is arranged between the two appearance detection components. When the second inductor detects the transformer, it sends a signal to the controller, and the controller controls the two rotating blocks to rotate a quarter of a stroke along the circular guide rail.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The conveying device for the appearance detection of large dry-type transformers according to the present invention has a plurality of sliding seats slidably connected to two linear guide rails of a conveying line. The transformer to be detected is arranged on a positioning component on the sliding seat and sequentially passes through two appearance detection components. And between the two appearance detection components, the transformer to be detected rotates 90 degrees along with the positioning component, realizing the full-automatic detection of the six-sided appearance of the transformer during the conveying process of the finished transformer, improving the detection efficiency, having high accuracy, and ensuring the production quality of the transformer.

[0015] 2. The conveying device for the appearance detection of large dry-type transformers according to the present invention has two sliding blocks of the sliding seat respectively slidably connected to the two linear guide rails. The two sliding blocks are connected by two connecting rods to form a frame sliding structure, which is convenient for arranging a camera of an appearance detection component on the working table at the bottom of the transformer, so as to take pictures and detect the bottom surface of the transformer.

[0016] 3. The conveying device for the appearance detection of large dry-type transformers according to the present invention has two rotating blocks slidably arranged on a circular guide rail of the positioning component. The two rotating blocks are arranged radially opposite to each other and provide a driving force to drive the transformer above them to rotate. This rotating structure adopted by the present invention will not affect the bottom surface photographing of the transformer; in addition, positioning plates are arranged on both rotating blocks. An inverted isosceles trapezoidal pressing block is connected to the top groove body of the positioning plate through a compression spring, and a top rod is connected to the inside of a plurality of through holes on both sides of the groove body through a spring. When placing a large dry-type transformer to be detected on the positioning component, two channel steel mounting seats at the bottom of the transformer are respectively placed on the two positioning plates, so that the pressing block moves downwards, extruding the two side top rods, making them extend out of the through holes and abut against the inner wall of the channel steel mounting seat, thereby fixing the transformer on the two positioning plates. This positioning method is convenient and the fixing is completed while placing, and it can adapt to the mobile feeding and detection of the transformer on the conveying line.

[0017] 4. The conveying device for the appearance detection of large dry-type transformers according to the present invention has two appearance detection components arranged at intervals along the conveying direction. The first appearance detection component at the front side has four cameras, which are respectively used to detect the top surface, bottom surface, left side, and right side of the transformer. The second appearance detection component at the rear side has two cameras, which are respectively used to detect the front side and rear side of the transformer, thereby realizing the six-sided appearance detection of the transformer on the conveying line. Description of the Drawings

[0018] Figure 1 is the front view of the embodiment of the present invention;

[0019] Figure 2 is the top view of the embodiment of the present invention;

[0020] Figure 3 is the left view of the embodiment of the present invention;

[0021] Figure 4It is a cross-sectional view of the positioning plate in the embodiment of the present invention;

[0022] Figure 5 is Figure 4 an enlarged view of the partial area A in

[0023] Figure 6 It is a partial front view of another embodiment of the present invention;

[0024] Figure 7 It is a partial top view of another embodiment of the present invention;

[0025] In the figure, 1 - workbench, 2 - linear guide rail, 3 - sliding block, 4 - connecting rod, 5 - circular guide rail, 6 - rotating block, 7 - positioning plate, 8 - ejector rod, 9 - groove body, 10 - pressing block, 11 - compression spring, 12 - spring, 13 - sleeve, 14 - limiting ring, 15 - baffle, 16 - first camera, 17 - second camera, 18 - first sensor, 19 - second sensor, 20 - lifting rod, 21 - support plate, 22 - limiting plate, 23 - third sensor, 24 - suspension device. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention.

[0027] Embodiment: As Figures 1-5 shown, a conveying device for the appearance inspection of large dry-type transformers includes a workbench 1, two linear guide rails 2 are arranged in parallel on the workbench 1, a plurality of sliding seats are arranged on the two linear guide rails 2, two appearance inspection components are arranged at intervals on the workbench 1, a positioning component is arranged on the sliding seat, the transformer is arranged on the positioning component, and sequentially passes through the two appearance inspection components along the linear guide rail 2, and the positioning component drives the transformer to rotate 90 degrees when it is between the two appearance inspection components.

[0028] Specifically, the sliding seat includes two sliding blocks 3, the two sliding blocks 3 are respectively slidably connected to the two linear guide rails 2, the two linear guide rails 2 serve as a conveying line for transporting finished transformers (both ends of the linear guide rail are connected to the upper ends of semi-circular guide rails, and the lower ends of the semi-circular guide rails are connected to another linear guide rail under the workbench to form a circulating conveying line), the two sliding blocks 3 are connected by two connecting rods 4 to form a frame support structure, which does not affect the appearance inspection of the bottom surface of the transformer.

[0029] The positioning component includes a circular guide rail 5, a rotating block 6, a positioning plate 7 and a ejector rod 8. The circular guide rail 5 is fixedly arranged on the two sliding blocks 3. Two rotating blocks 6 are slidably connected at relative positions on the circular guide rail 5. The positioning plate 7 is fixedly arranged on the rotating block 6. A groove 9 is formed at the top of the positioning plate 7. A pressing block 10 is arranged in the groove 9. The longitudinal section of the pressing block 10 is an inverted isosceles trapezoid, and the bottom is connected to the bottom surface of the groove 9 through a compression spring 11. A plurality of through holes are arranged on both sides of the positioning plate 7, and the through holes communicate with the groove 9. The ejector rod 8 is connected in the through hole through a spring 12; a sleeve 13 is embedded in the through hole. Limiting rings 14 are arranged at the opening edges on both sides of the sleeve 13. One end of the ejector rod 8 is inserted into the sleeve 13, and a baffle 15 is arranged on the ejector rod 8. The part of the ejector rod 8 located in the sleeve 13 is sleeved with the spring 12. One end of the spring 12 is connected to the baffle 15, and the other end is connected to the limiting ring 14 on the side away from the groove; the pressing block 10 protrudes from the groove 9 under the support of the compression spring 11. A plurality of sliding grooves are arranged on both sides of the pressing block 10, and the end of the ejector rod 8 is located in the sliding groove.

[0030] The two appearance detection components are a first appearance detection component and a second appearance detection component arranged along the conveying direction. The first appearance detection component includes four first cameras 16, which are respectively arranged above, below, left and right of the two linear guide rails 2. The specific installation positions are as follows: the first camera 16 above is installed on the workbench 1 through a bracket so as to face the top surface of the transformer directly. The first camera below is arranged on the workbench, between the two linear guide rails, so as to face the bottom surface of the transformer directly. The first cameras on the left and right are both installed on the workbench through brackets, outside the two linear guide rails, and face the left side surface and the right side surface of the transformer respectively; the second appearance detection component includes two second cameras 17, which are respectively arranged on the left and right sides of the two linear guide rails 2, and face the left side surface and the right side surface of the transformer after it is rotated 90 degrees.

[0031] The conveying device of the present invention further includes a sensor and a controller. First sensors 18 are arranged on one side of the two appearance detection components respectively for sensing the transformer. When the transformer reaches the sensing area, the first sensor 18 sends a signal to the controller, and the controller controls the camera to take pictures.

[0032] Both of the rotating blocks 6 are wirelessly connected to the controller. A second sensor 19 is arranged between the two appearance detection components. When the second sensor 19 detects the transformer, it sends a signal to the controller, and the controller controls the two rotating blocks 6 to rotate a quarter of a stroke along the circular guide rail 5.

[0033] The conveying device for the appearance detection of large dry-type transformers in the embodiments of the present invention has the following working process:

[0034] (1) The assembled large dry-type transformer is lifted onto the conveying device by a suspension device, so that the two channel steel mounting seats at the bottom of the transformer are respectively placed on the two positioning plates of the positioning component. The pressing plate is squeezed into the groove body, so that the two ejector rods on both sides extend out from the through holes and abut against the inner walls on both sides of the channel steel mounting seat, thereby fixing the transformer on the positioning component;

[0035] (2) The transformer moves along the linear guide rail. When it reaches the position of the first appearance detection component, the first sensor emits an induction signal and transmits it to the controller, which controls the four first cameras to take pictures of the top surface, bottom surface, left side surface, and right side surface of the transformer respectively. The photo information is transmitted to the controller in real time for automatic comparison and detection of appearance defects;

[0036] (3) The transformer continues to move along the linear guide rail. When it reaches the position of the second sensor, the second sensor emits an induction signal and transmits it to the controller, which controls the two rotating blocks to rotate a quarter of a stroke along the circular guide rail; when it reaches the position of the second appearance detection component, the sensor emits an induction signal and transmits it to the controller, which controls the two second cameras to take pictures of the left side surface and right side surface (i.e., the original front side surface and rear side surface) of the transformer after rotation respectively. The photo information is transmitted to the controller in real time for automatic comparison and detection of appearance defects; the six-sided appearance detection of the transformer is completed.

[0037] In other embodiments, a suspension device is also provided, including an I-shaped crossbeam slide rail. A slider is slidably connected to the lower side of the slide rail. A small hoist is connected below the slider. The hook is connected to the top lifting ring of the transformer to lift the transformer and move it above the conveying device along the slide rail and then land on the positioning component. During the falling process, the operator can manually assist to make the channel steel mounting seat at the bottom land on the positioning plate.

[0038] Such as Figures 6-7As shown, in other embodiments, in order to improve the convenience of feeding the transformer, an auxiliary feeding component is provided, which is arranged on the workbench and located on the head side of the conveying device. An opening is provided on the workbench, and the semi-circular guide rail of the conveying line passes through the opening and is integrally connected to the linear guide rail under the workbench. The auxiliary feeding component includes two lifting rods 20, which are respectively arranged on both sides of the linear guide rail 2 above the workbench. Support plates 21 are arranged at the upper ends of the two lifting rods 20. A limiting plate 22 is arranged on the side of the support plate 21 away from the linear guide rail 2. A third sensor 23 is arranged on the side of one of the support plates 21 close to the linear guide rail 2. The third sensor 23 and the lifting rods 20 are both connected to the controller. When feeding, the transformer is placed on the two support plates 21 through the suspension device 24. The two support plates 21 respectively support the two ends of the bottom of the transformer (i.e., both sides of the channel steel mounting seat). When the third sensor 23 senses a certain positioning component, the sensing signal is transmitted to the controller, and the two lifting rods 20 are controlled to descend, so that the two channel steel mounting seats at the bottom of the transformer are placed on the two positioning plates, and then the lifting rods 20 are controlled to reset, waiting to place the next transformer.

[0039] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A conveying device for appearance inspection of large dry-type transformers, comprising a workbench, on which two linear guide rails are arranged in parallel, and on which a plurality of sliding seats are arranged, characterized in that: Two appearance detection components are arranged at intervals on the workbench, a positioning component is arranged on the sliding seat, a transformer is arranged on the positioning component, and passes through the two appearance detection components in sequence along the linear guide rail, and the positioning component drives the transformer to rotate 90 degrees when it is between the two appearance detection components; The sliding seat includes two sliding blocks, which are respectively slidably connected to the two linear guide rails, and the two sliding blocks are connected by two connecting rods; both ends of the linear guide rail are connected to the upper end of the semicircular guide rail, and the lower end of the semicircular guide rail is connected to another linear guide rail under the workbench to form a circulating conveyor line; The locating component comprises a circular guide rail, a rotating block, a positioning plate and a push rod, the circular guide rail is fixedly arranged on the two sliding blocks, the circular guide rail is slidably connected to the two rotating blocks in a relative position, the positioning plate is fixedly arranged on the rotating block, a slot body is provided at the top of the positioning plate, a pressure block is arranged in the slot body, the longitudinal section of the pressure block is an inverted isosceles trapezoid, and the bottom is connected to the bottom surface of the slot body through a compression spring, a plurality of through holes are arranged on both sides of the positioning plate, the through holes are connected to the slot body, and the push rod is connected in the through holes through a spring; a sleeve is embedded in the through hole, and limiting rings are arranged on the opening edges of both sides of the sleeve, one end of the push rod is inserted in the sleeve, and a baffle is arranged on the push rod, the part of the push rod located in the sleeve is sleeved with the spring, one end of the spring is connected to the baffle, and the other end is connected to the limiting ring away from the slot body; the pressure block extends from the slot body under the support of the compression spring, and a plurality of slide grooves are arranged on both sides of the pressure block, and the end of the push rod is located in the slide groove; The two channel steel mounting seats at the bottom of the transformer are respectively placed on the two positioning plates of the positioning component, and the pressing plate is squeezed into the slot body, so that the top rods on both sides extend from the through holes and abut against the inner walls on both sides of the channel steel mounting seats to fix the transformer on the positioning component; The two appearance detection components are a first appearance detection component and a second appearance detection component arranged along the conveying direction, the first appearance detection component includes four first cameras, which are respectively arranged above, below, on the left and on the right of the two linear guides; the upper first camera is installed on the workbench through a bracket so that it faces the top surface of the transformer, the lower first camera is arranged on the workbench, located between the two linear guides, so that it faces the bottom surface of the transformer, and the left and right first cameras are both installed on the workbench through a bracket, located on the outside of the two linear guides, facing the left and right sides of the transformer respectively; the second appearance detection component includes two second cameras, which are respectively arranged on the left and right sides of the two linear guides, facing the left and right sides of the transformer after rotating 90 degrees; It also includes an auxiliary loading component, which is arranged on the workbench and is located on the head side of the conveying device. An opening is arranged on the workbench, and a semicircular guide rail of the conveying line passes through the opening and is integrally connected with the linear guide rail below the workbench. The auxiliary loading component includes two lifting rods, which are respectively arranged on both sides of the linear guide rail above the workbench. Support plates are arranged on the upper ends of the two lifting rods, and a limit plate is arranged on the side of the support plate away from the linear guide rail. A third sensor is arranged on the side of one of the support plates close to the linear guide rail, and the third sensor and the lifting rod are both connected to the controller; when loading, the transformer is placed on the two support plates through the suspension device, and the two support plates support the two ends of the bottom of the transformer respectively. When the third sensor senses a certain positioning component, the induction signal is transmitted to the controller, and the two lifting rods are controlled to descend, so that the two channel steel mounting seats at the bottom of the transformer are placed on the two positioning plates, and then the lifting rod is controlled to reset, waiting for the next transformer to be placed; the suspension device includes an I-shaped beam slide rail, a slider is slidably connected to the lower side of the slide rail, a small crane is connected below the slider, and the hook is connected to the top lifting ring of the transformer; It also includes a sensor and a controller. A first sensor is set on one side of the two appearance detection components for sensing the transformer. When the transformer reaches the sensing area, the first sensor sends a signal to the controller, and the controller controls the camera to take pictures. The two rotating blocks are connected to the controller by wireless signals. A second sensor is set between the two appearance detection components. The second sensor detects the transformer and sends a signal to the controller. The controller controls the two rotating blocks to rotate a quarter of the stroke along the circular guide rail.

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