An assembling mechanism capable of reducing residual stress of transformer core assembly

Abstract

This invention relates to the technical field of transformer core assembly, and in particular to an assembly mechanism that can reduce residual stress during transformer core assembly. The mechanism includes an assembly processing cabinet, an assembly placement platform, a material placement platform, a double-ended material transfer unit, a detachable enclosed box, a double-sided impurity blowing mechanism, an impurity extraction mechanism, and a detection and control unit. Through the coordinated use of the detachable enclosed box, the double-sided impurity blowing mechanism, and the impurity extraction mechanism, the double-ended material transfer unit moves the iron core chips to be stacked into the detachable enclosed box. After the sealing end cylinder blocks the upper opening of the detachable enclosed box, the upward and downward airflows from the double-sided impurity blowing mechanism blow away impurities from the bottom surface of the iron core chips during transfer and the upper surface of the iron core chips on the assembly placement platform, respectively. Then, the impurity extraction mechanism extracts the blown-away impurities, pre-cleaning the impurities between the stacked iron core chips and reducing the stress during the stacking and pressing of the iron core chips.

Description

Technical Field

[0001] This invention relates to the technical field of transformer core assembly, and in particular to an assembly mechanism that can reduce residual stress in transformer core assembly. Background Technology

[0002] The transformer core is the main magnetic circuit part of the transformer. It is usually made of hot-rolled or cold-rolled silicon steel sheets with high silicon content and coated with insulating varnish. The core and the coils wound on it form a complete electromagnetic induction system. The power transmission capacity of the power transformer depends on the material and cross-sectional area of ​​the core.

[0003] Chinese patent CN120164716A discloses a transformer core assembly and stacking mechanism, including a mounting top plate, a protective plate, and a feeding channel. The protective plate is fixedly connected to the side of the mounting top plate, and the feeding channel is provided on the protective plate for the transmission of silicon steel sheets. A control motor is mounted on the upper limit of the mounting top plate, controlling the rotation adjustment of a rotating guide block. A first electro-hydraulic telescopic rod is mounted on the rotating guide block, controlling the height adjustment of a support frame and a limit clamp. The limit clamp slides on the support frame to clamp and transmit the silicon steel sheets. A co-mounted installation structure is located within the mounting top plate and the protective plate, and its movement is controlled by a hydraulic telescopic control rod. This co-mounted installation structure is used for the stacking and forming of silicon steel sheets. The structure facilitates the installation of the transformer core.

[0004] The aforementioned related technologies and existing technologies have the following defects in the assembly and stacking of transformer cores: the surface of the core chips is covered with impurities during placement. When core chips with impurities are stacked together without being cleaned, adjacent core chips cannot make sufficient contact, internal stress is generated during compression, and the core chips are deformed during pressing, resulting in a decrease in core permeability and an increase in no-load loss. Summary of the Invention

[0005] To address the problem that impurities adhering to the surface of the iron core cause residual stress during stacking, resulting in decreased core permeability and increased no-load loss, this invention provides an assembly mechanism that can reduce residual stress during transformer core assembly.

[0006] The present invention provides an assembly mechanism that can reduce residual stress in transformer core assembly, and adopts the following technical solution: including an assembly processing cabinet, an assembly placement table, a material placement table, a double-end material transfer unit, a detachable enclosed box, a double-sided impurity blowing mechanism, an impurity extraction mechanism, and a detection and control unit.

[0007] The assembly placement platform is installed on the bottom wall of the assembly and processing cabinet.

[0008] There are two material placement platforms. The assembly placement platform is set at equal distances between the two material placement platforms. The material placement platform is installed on the bottom wall of the assembly and processing cabinet. The iron chip raw material is placed on the upper side of the material placement platform.

[0009] The dual-end material transfer unit is installed inside the assembly and processing cabinet. The dual-end material transfer unit is located above the assembly placement table and the material placement table. The dual-end material transfer unit is equipped with two iron chip gripping ends. The dual-end material transfer unit transfers the iron chips placed on the upper part of the material placement table to the upper part of the assembly placement table for assembly.

[0010] The detachable enclosed box is installed inside the assembly and processing cabinet. The upper end of the detachable enclosed box is provided with an opening, and both gripping ends of the double-ended material transfer unit are equipped with sealing end cylinders that seal the opening of the detachable enclosed box.

[0011] The dual-sided impurity blowing mechanism is installed inside the detachable enclosed box. The dual-sided impurity blowing mechanism blows air upwards and downwards respectively to blow away the impurities attached to the upper surface of the iron chip on the assembly platform and the bottom surface of the iron chip to be placed.

[0012] The impurity removal mechanism is installed inside the detachable enclosed box.

[0013] The detection and control unit is installed inside the detachable enclosed box. By detecting the height of the iron chip on the upper side of the assembly and placement platform, it controls the height of the material falling inside the detachable enclosed box by the double-ended material transfer unit.

[0014] Optionally, the dual-end material transfer unit includes: A drive unit is installed inside the assembly and processing cabinet.

[0015] The material telescopic gripping end is provided in two parts. The two material telescopic gripping ends are respectively installed at both ends of the drive unit. The material telescopic gripping ends can adsorb and fix the material. The drive unit drives the material telescopic gripping ends to move horizontally and vertically inside the assembly and processing cabinet. Two sealing end cylinders are respectively installed on the lower side of the two material telescopic gripping ends.

[0016] Optionally, the dual-sided impurity blowing mechanism includes: The dual-sided airflow separation plate is located inside a detachable enclosed box, with jet sections on both the top and bottom sides.

[0017] An airflow supply unit is horizontally installed inside a detachable enclosed box. One end of a double-sided airflow separation plate slides outside the airflow supply unit, and one end of the airflow supply unit fills the double-sided airflow separation plate with airflow.

[0018] An internal threaded shaft is located inside a detachable enclosed box. Both ends of the internal threaded shaft rotate through the inner wall of the detachable enclosed box. A gear is coaxially installed on one end of the internal threaded shaft on the outside of the detachable enclosed box. Double-sided airflow separation plates are threadedly sleeved on the outer surface of the internal threaded shaft.

[0019] It also includes two toothed plates, the upper ends of which are respectively installed in correspondence with two sealing end cylinders. The toothed plates are vertically arranged, and when the sealing end cylinders move to the upper opening of the detachable sealing box and are coaxial, the toothed plates mesh with gears when they move downwards.

[0020] Optionally, the impurity removal mechanism includes a removal airflow pipe and a removal outlet plate. The removal airflow pipe is fixed to the removal outlet plate, and the removal outlet plate is installed through the side of the detachable sealed box. The end of the removal outlet plate facing the inside of the detachable sealed box is open, and the removal airflow pipe provides suction airflow to the removal outlet plate.

[0021] Optionally, the detachable enclosed box consists of a fixed box body and a detachable box panel. The fixed box body and the detachable box panel can be detachably snapped together. The lower end of the fixed box body is connected to the assembly and processing cabinet. The assembly and placement platform is located inside the fixed box body. The opening of the detachable enclosed box is opened at the upper end of the fixed box body.

[0022] Optionally, the airflow supply unit includes an airflow supply pipe, which is installed through the interior of the detachable enclosed box. The airflow supply pipe is arranged parallel to the internal threaded shaft, and the airflow supply pipe and the internal threaded shaft are located on the same horizontal plane.

[0023] The double-sided airflow separation plate is located between the internal threaded shaft and the airflow supply pipe. The double-sided airflow separation plate is slidably sleeved on the outside of the airflow supply pipe. One end of the double-sided airflow separation plate and the airflow supply pipe has an annular opening that communicates with the inside. The bottom of the airflow supply pipe is provided with a strip-shaped recess. Multiple conical air plugs that can move up and down pass through the strip-shaped recess of the airflow supply pipe. One end of the conical air plug is coaxially mounted with an elastic telescopic rod inside the airflow supply pipe. The other end of the elastic telescopic rod is fixed to the airflow supply pipe.

[0024] A cylindrical push rod is fixed to the strip-shaped recess of the air supply pipe on both sides of the airflow separation plate. The upper side of the middle position of the cylindrical push rod is triangular.

[0025] Optionally, the drive unit includes: A vertical drive frame is installed inside the assembly and processing cabinet.

[0026] A drive threaded shaft is located inside the assembly and processing cabinet. Both ends of the drive threaded shaft are connected to both ends of the vertical drive frame, and the drive threaded shaft rotates relative to the vertical drive frame.

[0027] The movable main frame is threaded onto the outside of the drive threaded shaft. As the drive threaded shaft rotates, it drives the movable main frame to move horizontally on the surface of the vertical drive frame. Two material telescopic gripping ends are respectively installed on the bottom surfaces of the two ends of the movable main frame.

[0028] Optionally, the material telescopic gripping end includes an end plate and two parallel bars. The end plate is installed on the bottom surface of one end of the movable main frame. The end plate is coaxially installed with the corresponding sealing end cylinder. The bars are equipped with drive telescopic cylinders, and the upper end of the drive telescopic cylinders is fixed to the end plate.

[0029] A pneumatic adsorption plate is installed parallel to the lower side of the bar.

[0030] Optionally, the lower end of the conical air plug is the small-diameter end, and multiple conical air plugs are arranged at equal intervals inside the air supply pipe.

[0031] The distance between any two adjacent conical plugs is less than the width of the inner wall of the annular opening of the double-sided airflow separation plate. When the double-sided airflow separation plate is located on both sides of the detachable sealed box, the cylindrical push rod does not contact the conical plugs.

[0032] In summary, the present invention has the following beneficial technical effects: 1. This invention utilizes the combined use of a detachable sealed box, a double-sided impurity blowing mechanism, and an impurity extraction mechanism. The double-ended material transfer unit moves the iron chips to be stacked into the detachable sealed box. After the capping end cylinder seals the upper opening of the detachable sealed box, the upward and downward airflows from the double-sided impurity blowing mechanism blow away impurities from the bottom surface of the iron chips during transfer and the upper surface of the iron chips on the assembly platform, respectively. Then, the impurity extraction mechanism extracts the blown-away impurities, pre-cleaning the impurities between the stacked iron chips and reducing the stress during the stacking and pressing of the iron chips.

[0033] 2. This invention utilizes the coordinated use of a conical air-blocking head, a cylindrical push rod, and an air supply pipe. When the double-sided airflow separation plates are located on both sides of the detachable sealed box, the conical air-blocking head seals the air supply pipe under the thrust of the elastic telescopic rod. When the iron chip gripped by the material telescopic gripping end moves downward within the detachable sealed box, the toothed plate and gear mesh first, driving the double-sided airflow separation plates to move horizontally within the detachable sealed box. As the cylindrical push rod follows the movement of the double-sided airflow separation plates, it pushes the conical air-blocking head, causing the air supply pipe to fill the moving double-sided airflow separation plates with airflow, thus limiting the timing of the airflow being blown out by the double-sided airflow separation plates.

[0034] 3. The present invention, through the detachable snap-fit ​​design of the fixed box and the split box plate, allows the fixed box and the split box plate to be fitted together during stacking assembly. When the capping end cylinder fits into the opening of the fixed box, a closed space is formed between the capping end cylinder, the fixed box, and the split box plate, preventing blown-off impurities from leaking into the external space. After the stacking assembly is completed, the split box plate can be separated from the fixed box, making it easy to remove the stacked and assembled iron chips. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure on the rear axle side in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the double-ended material transfer unit in an embodiment of the present invention; Figure 4 This is a schematic diagram of the distribution of gears and toothed plates in an embodiment of the present invention; Figure 5 This is a schematic diagram of the material telescopic gripping end in an embodiment of the present invention; Figure 6 This is a schematic diagram of the connection between the fixed box body and the split box plate in an embodiment of the present invention; Figure 7 This is a schematic diagram of the detachable enclosed box in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the double-sided impurity blowing mechanism in an embodiment of the present invention; Figure 9 This is an embodiment of the present invention. Figure 8 Enlarged schematic diagram of the structure at point A in the middle.

[0036] Reference numerals: 1. Assembly and processing cabinet; 2. Assembly placement table; 3. Material placement table; 4. Double-end material transfer unit; 41. Drive unit; 411. Vertical drive frame; 412. Drive threaded shaft; 413. Movable main frame; 42. Material telescopic gripping end; 421. End plate; 422. Bar; 423. Drive telescopic cylinder; 424. Air pressure adsorption plate; 5. Detachable enclosed box; 51. Fixed box body; 52. Detachable box plate; 6. Sealing end cylinder; 7. Double-sided impurity blowing mechanism; 71. Double-sided airflow separation plate; 72. Airflow supply unit; 721. Airflow supply pipe; 722. Conical air plug; 723. Elastic telescopic rod; 724. Columnar push rod; 73. Internal threaded shaft; 74. Toothed plate; 75. Gear; 8. Impurity extraction mechanism; 81. Extraction airflow pipe; 82. Extraction outlet plate; 9. Detection and control unit. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1-9 The present invention will be described in further detail below.

[0038] This invention discloses an assembly mechanism that can reduce residual stress in transformer core assembly. For example... Figures 1-3 As shown, it includes an assembly and processing cabinet 1, an assembly and placement platform 2, a material placement platform 3, a double-ended material transfer unit 4, a detachable enclosed box 5, a double-sided impurity blowing mechanism 7, an impurity extraction mechanism 8, and a detection and control unit 9.

[0039] In this embodiment, the assembly and processing cabinet 1 is equipped with machine tool doors that can be opened and closed on both the front and rear sides, and the machine tool doors are equipped with observation windows, which can close the interior while allowing observation of the internal situation.

[0040] Assembly placement platform 2 is installed on the bottom wall inside the assembly and processing cabinet 1. There are two material placement platforms 3. Assembly placement platform 2 is set at equal distances between the two material placement platforms 3. Material placement platform 3 is installed on the bottom wall inside the assembly and processing cabinet 1. Iron chip raw materials are placed on the upper side of material placement platform 3.

[0041] In this embodiment, the placement surfaces of both the assembly placement stage 2 and the material placement stage 3 are horizontal, ensuring that the iron chip remains horizontal when placed.

[0042] The double-ended material transfer unit 4 is installed inside the assembly processing cabinet 1. The double-ended material transfer unit 4 is located on the upper side of the assembly placement table 2 and the material placement table 3. The double-ended material transfer unit 4 is equipped with two iron chip gripping ends. The double-ended material transfer unit 4 transfers the iron chips placed on the upper side of the material placement table 3 to the upper side of the assembly placement table 2 for assembly.

[0043] In use, the double-ended material transfer unit 4 can grab the iron chips placed on the two material placement tables 3 respectively, and stack the grabbed iron chips on the upper side of the iron chips on the assembly placement table 2 for assembly and stacking.

[0044] The detachable enclosed box 5 is installed inside the assembly and processing cabinet 1. The detachable enclosed box 5 has an opening at the top. Both gripping ends of the double-end material transfer unit 4 are equipped with sealing end cylinders 6 that seal the opening of the detachable enclosed box 5.

[0045] In use, the gripping end of the double-ended material transfer unit 4 grips the iron chip and enters the interior of the detachable sealed box 5 through the opening of the detachable sealed box 5, while the sealing end cylinder 6 seals the opening of the detachable sealed box 5.

[0046] The dual-sided impurity blowing mechanism 7 is installed inside the detachable sealed box 5. The dual-sided impurity blowing mechanism 7 blows air upward and downward respectively to blow away the impurities attached to the upper surface of the iron chip on the upper side of the assembly and placement platform 2 and the bottom surface of the iron chip to be placed. The impurity extraction mechanism 8 is installed inside the detachable sealed box 5.

[0047] In use, after the iron chip enters the detachable sealed box 5, the double impurity blowing mechanism 7 blows airflow onto the impurities attached to the upper surface of the iron chip on the uppermost side above the assembly and placement platform 2 and the bottom surface of the iron chip moving downwards. The airflow blows away the impurities on the surface of the iron chip, and then the impurity extraction mechanism 8 extracts the blown-away impurities.

[0048] The detection control unit 9 is installed inside the detachable enclosed box 5. By detecting the height of the iron chip on the upper side of the assembly and placement platform 2, it controls the height of the material falling in the detachable enclosed box 5 by the double-end material transfer unit 4. As the thickness of the iron chip stacked on the upper side of the assembly and placement platform 2 increases, the double-end material transfer unit 4 controls the gripped iron chip to move downwards by the corresponding height, and stacks the iron chip on the upper side of the iron chip stacked below.

[0049] Specifically, the detection and control unit 9 includes a height inspection module, a signal processing module, and a motion control module.

[0050] The height detection module employs a laser displacement sensor, which is fixedly installed on the upper inner wall of the detachable enclosed box 5. It measures the distance vertically downwards from the sensor to the surface of the uppermost layer of iron chips on the assembly platform 2. The signal processing module calculates the current total stacked thickness based on this distance and the sensor's calibrated installation height. The motion control module then controls the dual-end material transfer unit 4 to lower the iron chips to be placed until they contact the upper surface of the already stacked iron chips. The aforementioned laser ranging and closed-loop control principle is existing technology.

[0051] The dual-end material transfer unit 4 includes a drive unit 41 and a material telescopic gripping end 42.

[0052] The drive unit 41 is installed inside the assembly and processing cabinet 1. There are two material telescopic gripping ends 42, which are respectively installed at both ends of the drive unit 41. The material telescopic gripping ends 42 can adsorb and fix the material. The drive unit 41 drives the material telescopic gripping ends 42 to move horizontally and vertically inside the assembly and processing cabinet 1. Two capping end cylinders 6 are respectively installed on the lower side of the two material telescopic gripping ends 42.

[0053] In this embodiment, as Figures 6-7 As shown, the dual-sided impurity blowing mechanism 7 includes a dual-sided airflow separation plate 71, an airflow supply unit 72, an internal threaded shaft 73, and a toothed plate 74.

[0054] The dual-sided airflow separation plate 71 is located inside the detachable enclosed box 5, and the upper and lower sides of the dual-sided airflow separation plate 71 are both jet parts.

[0055] The air supply unit 72 is horizontally installed inside the detachable enclosed box 5. One end of the double-sided airflow separation plate 71 slides outside the air supply unit 72, and the air supply unit 72 fills the double-sided airflow separation plate 71 with airflow.

[0056] The internal threaded shaft 73 is located inside the detachable enclosed box 5. Both ends of the internal threaded shaft 73 rotate through the inner wall of the detachable enclosed box 5. A gear 75 is coaxially installed on one end of the internal threaded shaft 73 on the outside of the detachable enclosed box 5. The double-sided airflow separation plates 71 are threadedly sleeved on the outer surface of the internal threaded shaft 73.

[0057] When in use, the internal threaded shaft 73 rotates and engages with the double-sided airflow separation plate 71, causing the double-sided airflow separation plate 71 to move within the detachable enclosed box 5.

[0058] There are two toothed plates 74. The upper ends of the two toothed plates 74 are respectively installed one-to-one with the two sealing end cylinders 6. The toothed plates 74 are set vertically. When the sealing end cylinder 6 moves to the upper opening of the detachable sealing box 5 and is coaxial, the toothed plates 74 move downward and mesh with the gears 75. During the downward movement of the toothed plates 74, they mesh with the gears 75 and then disengage, driving the double-sided airflow separation plates 71 to move from one side of the detachable sealing box 5 to the other side. This does not interfere with the iron chip stacked on the assembly placement table 2 that moves downward from the upper side.

[0059] The impurity removal mechanism 8 includes a removal airflow pipe 81 and a removal outlet plate 82. The removal airflow pipe 81 is fixed to the removal outlet plate 82. The removal outlet plate 82 is installed through the side of the detachable sealed box 5. The end of the removal outlet plate 82 facing the inside of the detachable sealed box 5 is open. The removal airflow pipe 81 provides suction airflow to the removal outlet plate 82.

[0060] In this embodiment, the extraction airflow pipe 81 is connected to the external airflow extraction device to provide airflow extraction to the extraction outlet plate 82. The extracted airflow carries impurities out of the detachable sealed box 5, preventing impurities from falling onto the iron chip surface again.

[0061] The detachable enclosed box 5 consists of a fixed box body 51 and a detachable box plate 52. The fixed box body 51 and the detachable box plate 52 can be detachably snapped together. The lower end of the fixed box body 51 is connected to the assembly and processing cabinet 1. The assembly and placement table 2 is located inside the fixed box body 51. The opening of the detachable enclosed box 5 is opened at the upper end of the fixed box body 51.

[0062] During stacking and assembly, the fixed box 51 and the split box 52 are snapped together, so that when the cap end cylinder 6 is engaged with the opening of the fixed box 51, a closed space is formed between the cap end cylinder 6, the fixed box 51 and the split box 52.

[0063] After all the iron chips are stacked and assembled, the split box 52 is separated from the fixed box 51 to facilitate the removal of the stacked and assembled iron chips.

[0064] In this embodiment, as Figures 8-9 As shown, the airflow supply unit 72 includes an airflow supply pipe 721, which is installed inside the detachable enclosed box 5. The airflow supply pipe 721 is arranged parallel to the internal threaded shaft 73, and the airflow supply pipe 721 and the internal threaded shaft 73 are located on the same horizontal plane.

[0065] In this embodiment, an air pump is installed at one end of the air supply pipe 721 outside the detachable sealed box 5 to fill the air supply pipe 721 with air. At the same time, a pressure relief valve is installed at one end of the air supply pipe 721 outside the detachable sealed box 5 to prevent the internal pressure of the air supply pipe 721 from being too high.

[0066] The double-sided airflow separation plate 71 is located between the internal threaded shaft 73 and the airflow supply pipe 721. The double-sided airflow separation plate 71 is slidably sleeved on the outside of the airflow supply pipe 721. One end of the double-sided airflow separation plate 71 and the airflow supply pipe 721 has an annular opening that communicates with the inside. The bottom of the airflow supply pipe 721 is provided with a strip-shaped recess. Multiple tapered air-blocking heads 722 that can move up and down pass through the strip-shaped recess of the airflow supply pipe 721. One end of the tapered air-blocking head 722 is coaxially mounted with an elastic telescopic rod 723 inside the airflow supply pipe 721. The elastic telescopic rod 723 is composed of an inner rod, an outer cylinder and an internal compression spring, and both ends are telescopic. The other end of the elastic telescopic rod 723 is fixed to the airflow supply pipe 721. The elasticity of the elastic telescopic rod 723 pushes the tapered air-blocking head 722 to block the airflow supply pipe 721.

[0067] A cylindrical push rod 724 is fixed in the strip-shaped recess of the air supply pipe 721 on both sides of the airflow separation plate 71. The upper side of the cylindrical push rod 724 is triangular in the middle position. The lower end of the conical air plug 722 is the small diameter end. Multiple conical air plugs 722 are equally spaced inside the air supply pipe 721 and extend out of the outside of the air supply pipe 721.

[0068] As the cylindrical push rod 724 moves along with the double-sided airflow separation plates 71, the cylindrical push rod 724 contacts the conical air-blocking head 722 at one end outside the airflow supply pipe 721, pushing the conical air-blocking head 722 to disengage from blocking the airflow supply pipe 721, and the airflow supply pipe 721 fills the double-sided airflow separation plates 71 with airflow.

[0069] The distance between any two adjacent conical air-blocking heads 722 is less than the width of the inner wall of the annular opening of the double-sided airflow separation plate 71. When the double-sided airflow separation plate 71 is located on both sides of the detachable sealed box 5, the cylindrical push rod 724 does not contact the conical air-blocking head 722.

[0070] When in use, when the dual-sided airflow separation plate 71 is located on both sides of the detachable enclosed box 5, the airflow supply pipe 721 does not fill the dual-sided airflow separation plate 71 with airflow. During the movement of the dual-sided airflow separation plate 71, the cylindrical push rod 724 pushes the conical air plug 722, causing the airflow supply pipe 721 to fill the dual-sided airflow separation plate 71 with airflow. At the same time, since the distance between each two adjacent conical air plugs 722 is less than the width of the inner wall of the annular opening of the dual-sided airflow separation plate 71, it is ensured that when the dual-sided airflow separation plate 71 moves, the cylindrical push rod 724 contacts at least one conical air plug 722, ensuring that the airflow supply pipe 721 stably fills the moving dual-sided airflow separation plate 71 with airflow.

[0071] In this embodiment, as Figures 4-5 As shown, the drive unit 41 includes a vertical drive frame 411, a drive threaded shaft 412, and a movable main frame 413.

[0072] The vertical drive frame 411 is installed inside the assembly and processing cabinet 1. The assembly and processing cabinet 1 is equipped with a drive cylinder that drives the vertical drive frame 411 to move up and down. The drive threaded shaft 412 is located inside the assembly and processing cabinet 1. Both ends of the drive threaded shaft 412 are connected to both ends of the vertical drive frame 411. One end of the vertical drive frame 411 is equipped with a motor that controls the rotation of the drive threaded shaft 412. The drive threaded shaft 412 rotates relative to the vertical drive frame 411. The movable main frame 413 is threaded onto the outside of the drive threaded shaft 412. When the drive threaded shaft 412 rotates, it drives the movable main frame 413 to move horizontally on the surface of the vertical drive frame 411. Two material telescopic gripping ends 42 are respectively installed on the bottom surfaces of both ends of the movable main frame 413.

[0073] The material telescopic gripping end 42 includes an end plate 421 and two parallel bars 422. The end plate 421 is installed on the bottom surface of one end of the movable main frame 413. The end plate 421 is coaxially installed with the corresponding sealing end cylinder 6. The bars 422 are equipped with a drive telescopic cylinder 423. The upper end of the drive telescopic cylinder 423 is fixed to the end plate 421. A pneumatic adsorption plate 424 is installed parallel to the lower side of the bars 422.

[0074] In use, the drive threaded shaft 412 moves the two end plates 421 alternately to the upper side of the assembly platform 2 and the material platform 3 by moving them. When the two end plates 421 move to the upper side of the assembly platform 2 and the material platform 3 respectively, the vertical drive frame 411 is first controlled to move downward, which drives the end plates 421 and the capping end cylinder 6 to move downward. The capping end cylinder 6 on the upper side of the detachable sealing box 5 engages with the opening, and at the same time drives the toothed plate 74 to mesh with the gear 75. Before the end plates 421 contact the detachable sealing box 5, the toothed plate 74 moves to the lower side of the gear 75. When the end plates 421 move to contact the detachable sealing box 5, the vertical drive frame 411 stops moving downward. Then the drive telescopic cylinders 423 on the lower side of the two end plates 421 drive the corresponding air pressure adsorption plates 424 to move downward respectively.

[0075] After the iron chip adsorbed by the air pressure adsorption plate 424 inside the detachable enclosed box 5 comes into contact with the iron chip on the lower side, it stops moving downward and stops adsorbing the iron chip. After the air pressure adsorption plate 424 on the upper side of the material placement platform 3 moves downward and comes into contact with the placed iron chip, the corresponding air pressure adsorption plate 424 adsorbs and grabs the contacted iron chip. Thus, as the movable main frame 413 moves back and forth up and down and left and right, the iron chips placed on the upper side of the two material placement platforms 3 are alternately stacked and assembled onto the upper side of the assembly placement platform 2.

[0076] The working principle is as follows: The iron chips to be assembled are placed on the material placement platforms 3 on both sides. The double-end material transfer unit 4 can grab the iron chips on the two material placement platforms 3 respectively. The double-end material transfer unit 4 first moves the grabbed iron chips to the upper side of the opening of the detachable sealing box 5, and then controls the grabbed iron chips to move downward to the inside of the detachable sealing box 5. After the detection control unit 9 detects that the sealing end cylinder 6 closes the opening of the detachable sealing box 5, it controls the airflow blown upward and downward by the double-side impurity blowing mechanism 7 to blow away the impurities on the bottom surface of the transferred iron chips and the upper surface of the iron chips on the assembly placement platform 2 respectively. Then the impurity extraction mechanism 8 extracts the blown-away impurities, pre-cleaning the impurities between the stacked iron chips and reducing the stress when the iron chips are stacked and pressed together.

[0077] After the double-sided impurity blowing mechanism 7 moves to the other end of the detachable sealed box 5 and stops moving, the iron chip cleaned on the upper side continues to move downward and is stacked and assembled with the upper side of the iron chip placed on the assembly platform 2.

[0078] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An assembly mechanism for reducing residual stress in transformer core assembly, characterized in that, include: Assembly and processing of cabinet (1); Assembly placement table (2), which is installed on the bottom wall of the assembly processing cabinet (1); Material placement platform (3), there are two material placement platforms (3), and the assembly placement platform (2) is equally spaced between the two material placement platforms (3). The material placement platform (3) is installed on the bottom wall inside the assembly processing cabinet (1), and the iron chip raw material is placed on the upper side of the material placement platform (3). Double-ended material transfer unit (4) is installed inside the assembly processing cabinet (1). The double-ended material transfer unit (4) is located on the upper side of the assembly placement table (2) and the material placement table (3). The double-ended material transfer unit (4) is provided with two iron chip gripping ends. The double-ended material transfer unit (4) transfers the iron chips placed on the upper side of the material placement table (3) to the upper side of the assembly placement table (2) for assembly. A detachable enclosed box (5) is installed inside the assembly and processing cabinet (1). The upper end of the detachable enclosed box (5) is provided with an opening. Both gripping ends of the double-end material transfer unit (4) are equipped with sealing end cylinders (6) that seal the opening of the detachable enclosed box (5). The double-sided impurity blowing mechanism (7) is installed inside the detachable enclosed box (5). The double-sided impurity blowing mechanism (7) blows air upward and downward respectively to blow away the impurities attached to the upper surface of the iron chip on the upper side of the assembly and placement platform (2) and the bottom surface of the iron chip to be placed. Impurity extraction mechanism (8), which is installed inside the detachable enclosed box (5); It also includes a detection control unit (9), which is installed inside the detachable enclosed box (5). By detecting the height of the iron chip on the upper side of the assembly placement platform (2), the double-end material transfer unit (4) controls the height of the material falling inside the detachable enclosed box (5).

2. The assembly mechanism for reducing residual stress in transformer core assembly according to claim 1, characterized in that: The dual-end material transfer unit (4) includes: A drive unit (41) is installed inside the assembly and processing cabinet (1); Material telescopic gripping end (42), the number of the material telescopic gripping end (42) is two, the two material telescopic gripping end (42) are respectively installed at both ends of the drive unit (41), the material telescopic gripping end (42) can adsorb and fix the material, the drive unit (41) drives the material telescopic gripping end (42) to move horizontally and vertically inside the assembly and processing cabinet (1), and two capping end cylinders (6) are respectively installed on the lower side of the two material telescopic gripping end (42).

3. The assembly mechanism for reducing residual stress in transformer core assembly according to claim 2, characterized in that: The dual-sided impurity blowing mechanism (7) includes: The double-sided airflow separation plate (71) is located inside the detachable enclosed box (5), and the upper and lower sides of the double-sided airflow separation plate (71) are both jet parts; An air supply unit (72) is horizontally installed inside a detachable enclosed box (5). One end of a double-sided air separation plate (71) slides outside the air supply unit (72), and the air supply unit (72) fills the double-sided air separation plate (71) with airflow from one end. An internal threaded shaft (73) is located inside the detachable enclosed box (5). Both ends of the internal threaded shaft (73) rotate through the inner wall of the detachable enclosed box (5). A gear (75) is coaxially installed on one end of the internal threaded shaft (73) on the outside of the detachable enclosed box (5). The double-sided airflow separation plate (71) is threaded onto the outer surface of the internal threaded shaft (73). It also includes a toothed plate (74), there are two toothed plates (74), the upper ends of the two toothed plates (74) are respectively installed in correspondence with the two sealing end cylinders (6), the toothed plates (74) are vertically set, and when the sealing end cylinder (6) moves to the upper opening of the detachable sealing box (5) and is coaxial, the toothed plates (74) move downward and mesh with the gear (75).

4. The assembly mechanism for reducing residual stress in transformer core assembly according to claim 1, characterized in that: The impurity removal mechanism (8) includes a suction air pipe (81) and a suction outlet plate (82). The suction air pipe (81) is fixed to the suction outlet plate (82). The suction outlet plate (82) is installed through the side of the detachable sealed box (5). The end of the suction outlet plate (82) facing the inside of the detachable sealed box (5) is open. The suction air pipe (81) provides suction air to the suction outlet plate (82).

5. The assembly mechanism for reducing residual stress in transformer core assembly according to claim 1, characterized in that: The detachable enclosed box (5) consists of a fixed box body (51) and a split box plate (52). The fixed box body (51) and the split box plate (52) are detachably snapped together. The lower end of the fixed box body (51) is connected to the assembly and processing cabinet (1). The assembly and placement table (2) is located inside the fixed box body (51). The opening of the detachable enclosed box (5) is opened at the upper end of the fixed box body (51).

6. The assembly mechanism for reducing residual stress in transformer core assembly according to claim 3, characterized in that: The air supply unit (72) includes an air supply pipe (721), which is installed through the interior of the detachable enclosed box (5). The air supply pipe (721) is arranged parallel to the internal threaded shaft (73), and the air supply pipe (721) and the internal threaded shaft (73) are located on the same horizontal plane. The double-sided airflow separation plate (71) is located between the internal threaded shaft (73) and the airflow supply pipe (721). The double-sided airflow separation plate (71) is slidably sleeved on the outside of the airflow supply pipe (721). The double-sided airflow separation plate (71) and the airflow supply pipe (721) have an annular opening at one end that communicates with the inside. The bottom of the airflow supply pipe (721) is provided with a strip-shaped recess. The airflow supply pipe (721) has multiple tapered air plugs (722) that can move up and down through the strip-shaped recess. The tapered air plugs (722) are coaxially mounted with an elastic telescopic rod (723) at one end inside the airflow supply pipe (721). The other end of the elastic telescopic rod (723) is fixed to the airflow supply pipe (721). The double-sided airflow separation plate (71) is fixed with a columnar push rod (724) at the strip-shaped recess of the airflow supply pipe (721). The upper side of the columnar push rod (724) at the middle position is triangular.

7. The assembly mechanism for reducing residual stress in transformer core assembly according to claim 2, characterized in that: The drive unit (41) includes: A vertical drive frame (411) is installed inside the assembly and processing cabinet (1); Drive threaded shaft (412), the drive threaded shaft (412) is located inside the assembly and processing cabinet (1), the two ends of the drive threaded shaft (412) are connected to the two ends of the vertical drive frame (411), and the drive threaded shaft (412) rotates relative to the vertical drive frame (411); The movable main frame (413) is threaded onto the outside of the drive threaded shaft (412). When the drive threaded shaft (412) rotates, it drives the movable main frame (413) to move horizontally on the surface of the vertical drive frame (411). Two material telescopic gripping ends (42) are respectively installed on the bottom surfaces of the two ends of the movable main frame (413).

8. The assembly mechanism for reducing residual stress in transformer core assembly according to claim 7, characterized in that: The material telescopic gripping end (42) includes an end plate (421) and two parallel bars (422). The end plate (421) is installed on the bottom surface of one end of the movable main frame (413). The end plate (421) is coaxially installed with the corresponding capping end cylinder (6). The bars (422) are equipped with a drive telescopic cylinder (423). The upper end of the drive telescopic cylinder (423) is fixed to the end plate (421). A pressure adsorption plate (424) is installed parallel to the lower side of the bar (422).

9. The assembly mechanism for reducing residual stress in transformer core assembly according to claim 6, characterized in that: The lower end of the conical air plug (722) is the small diameter end, and multiple conical air plugs (722) are equally spaced inside the air supply pipe (721); The distance between any two adjacent conical plugs (722) is less than the width of the inner wall of the annular opening of the double-sided airflow separation plate (71). When the double-sided airflow separation plate (71) is located on both sides of the detachable sealed box (5), the cylindrical push rod (724) does not contact the conical plugs (722).

Images