A tool for automatic lamination and precise positioning of transformer cores

Abstract

The present invention relates to the technical field of automated equipment for transformer production, and specifically to a precise positioning tool for automatic lamination of transformer cores, comprising a frame, a mounting top plate provided on the frame, a positioning assembly provided on the mounting top plate, the positioning assembly comprising mutually parallel baffles and a positioning block on one side between two baffles, the positioning block provided with a groove adapted to one end of the silicon steel sheet being processed; the two baffles can move inward, and the positioning block can move in the direction of the baffles; in an initial state, the spacing between the two baffles is greater than the width of the silicon steel sheet being processed; the two baffles are provided with a synchronous drive device for driving the two baffles to move inward, and the positioning block is provided with a push drive device for driving the two baffles to move inward. The present invention shapes and precisely positions the position and spacing of each silicon steel sheet, ensuring the stacking accuracy and quality of the silicon steel sheet core in the next process, with a high level of automation, thereby ensuring the beautiful appearance of the core and the stability of the transformer quality.

Description

Technical Field

[0001] The present invention relates to the technical field of automated equipment for transformer production, and in particular to a tool for automatic lamination and precise positioning of transformer cores. Background Art

[0002] At present, the domestic transformer core stacking is mainly completed manually, and the emergence of the automatic core stacking production line has broken the traditional core manufacturing method. However, when the core is automatically stacked, each silicon steel sheet needs to be accurately positioned to prevent the transformer core from being inaccurately stacked during the next stacking process, which affects the quality of the transformer stacking. How to ensure the precise positioning of the transformer core before automatic stacking becomes an important part of the automatic core stacking production line. Only by accurately positioning the positions of the upper and lower yoke silicon steel sheets and the silicon steel sheets of each core column can the next step of simultaneous stacking of each silicon steel sheet be achieved very conveniently, ensuring the accuracy of the stacking. Therefore, the prior art lacks a device for accurately positioning each silicon steel sheet when the transformer core is automatically stacked, so as to achieve the purpose of accurately positioning each silicon steel sheet before the core is stacked. People are in urgent need of a tool for accurate positioning of automatic transformer core stacking to solve the above problems. Summary of the Invention

[0003] The present invention provides a step-by-step positioning device for silicon steel sheets in a transformer core automatic stacking production line, aiming to solve the above-mentioned problem. During the automatic core stacking process, the position and spacing of each silicon steel sheet are first shaped and accurately positioned to ensure the stacking accuracy and quality of the silicon steel sheet core stacking in the next process, thereby improving the automation level of transformer core stacking and ensuring the beautiful appearance of the core and the stability of the transformer quality.

[0004] The technical solutions adopted to solve the above technical problems are:

[0005] A transformer core automatic lamination precision positioning tool is characterized in that it includes a frame, a mounting top plate is provided on the frame, a positioning assembly is provided on the mounting top plate, the positioning assembly includes mutually parallel baffles and a positioning block on one side between two baffles, the positioning block is provided with a groove that is compatible with one end of the processed silicon steel sheet; the two baffles can move inwardly, and the positioning block can move toward the baffles; in the initial state, the spacing between the two baffles is greater than the width of the processed silicon steel sheet; the two baffles are provided with a synchronous drive device that drives the two baffles to move inwardly, and the positioning block is provided with a pushing drive device that drives the two baffles to move toward the baffles.

[0006] When the silicon steel sheet to be processed is placed between the two baffles by the robot, the synchronous drive device drives the two baffles to move inward, pressing the two sides of the silicon steel sheet to be processed, and the pushing drive device drives the positioning block to move toward the baffle (silicon steel sheet). One side of the silicon steel sheet is located in the groove of the positioning block, pushing the silicon steel sheet to the set position to achieve precise positioning of the silicon steel sheet. The sheet is then taken by the robot, and the synchronous drive device and the pushing drive device drive the two baffles back to their initial state.

[0007] In a preferred embodiment, a mounting base is provided on the shelf below the mounting top plate, and the synchronous drive device includes a synchronous servo motor, a synchronous belt, an output pulley and a pair of synchronous pulleys, the synchronous pulleys are installed on the output pulley and the pair of synchronous pulleys, the rotating shaft of the synchronous servo motor is connected to the center axis of the output pulley, the center axis of each synchronous pulley is connected to a synchronous screw rod, the thread directions of the two synchronous screw rods are opposite, and the synchronous screw rod is connected to the bearing seat supporting the screw rod; a positioning slide rail is provided on the slide rail, and a slider adapted thereto is provided; the two synchronous screw rods are respectively provided with corresponding nut conversion blocks, the nut conversion block is fixed together with the slider, and the two nut conversion blocks are respectively fixedly connected to the two baffles in the positioning combination.

[0008] During use, when the synchronous servo motor rotates forward, it drives the synchronous belt drive, the two synchronous pulleys rotate, and the two screws rotate. Because the threads of the two synchronous screws run in opposite directions, the nut conversion block drives the corresponding stop bar to move inward, pressing the two sides of the silicon steel sheet being processed to achieve the horizontal positioning of the silicon steel sheet. Conversely, when the synchronous servo motor rotates backward, it drives the synchronous belt drive, and the two stop bars return to their initial state.

[0009] In a preferred embodiment, the two stop bars are respectively a dynamic stop bar and a static stop bar, one of the nut conversion blocks is connected to a cylinder, and the output shaft of the cylinder is fixedly connected to the dynamic stop bar in the positioning assembly.

[0010] In this method, when in use, when the synchronous servo motor is in forward transmission, it drives the synchronous belt transmission, the two synchronous pulleys rotate, and drive the two screws to rotate. Since the thread directions of the two synchronous screws are opposite, the nut conversion blocks drive the corresponding baffles to move inward. When the baffles move to the set position, the synchronous servo motor stops working, the static baffle serves as the positioning support of the silicon steel sheet, the cylinder works, and its output shaft is pushed out, driving the dynamic baffle to move inward, thereby realizing the lateral positioning of the silicon steel sheet.

[0011] In a preferred embodiment, the pushing drive device is a pushing servo motor, a transmission nut is connected below the positioning block, a transmission screw adapted to the transmission nut is screwed inside the transmission nut, and the transmission screw is connected to the rotating shaft of the pushing servo motor.

[0012] When in use, the positioning block moves back and forth by pushing the servo motor in the forward and reverse directions.

[0013] In a preferred embodiment, there are two or more positioning assemblies, the synchronous driving device simultaneously drives the blocking bars of each positioning assembly to move, and the pushing driving device simultaneously drives the positioning blocks of each positioning assembly to move.

[0014] The beneficial effects of the present invention are as follows: the present invention shapes and accurately positions the position and spacing of each silicon steel sheet, thereby ensuring the stacking accuracy and quality of the silicon steel sheet iron core in the next process, with a high level of automation, thereby ensuring the beautiful appearance of the iron core and the stability of the transformer quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional diagram of the precise positioning tooling of Example 1 of the present invention;

[0016] Figure 2 This is a three-dimensional diagram of the precision positioning tooling of Example 1 of the present invention without the installation top plate;

[0017] Figure 3 This is a three-dimensional diagram of a synchronous drive device for precise positioning tooling according to embodiment 1 of the present invention;

[0018] Figure 4 This is a perspective view of a pushing drive device for a precise positioning tool according to embodiment 1 of the present invention;

[0019] Figure 5 This is a three-dimensional diagram of a portion A of the synchronous drive device for precise positioning tooling according to Example 1 of the present invention;

[0020] Figure 6 This is a perspective view of part B of the pushing drive device of the precision positioning tool in Example 1 of the present invention;

[0021] Figure 7 This is a three-dimensional diagram of a static stop bar of a precision positioning tooling according to embodiment 1 of the present invention;

[0022] Figure 8 This is a three-dimensional diagram of a dynamic stop bar of a precision positioning tooling according to embodiment 1 of the present invention;

[0023] Figure 9 is a three-dimensional diagram of the precision positioning tooling of Example 2 of the present invention;

[0024] Figure 10 This is a three-dimensional diagram of the precision positioning tooling of Example 2 of the present invention without the installation top plate;

[0025] Figure 11 It is a three-dimensional diagram of the precision positioning tooling according to embodiment 2 of the present invention.

[0026] The reference numerals in the figure are: 1 shelf, 101 mounting top plate, 102 adapter bottom plate, 103 mounting bottom plate, 104 bearing seat, 105 slide rail, 106 steel sheet support plate, 107 steel sheet spacer, 201 dynamic stop bar, 202 static stop bar, 203 slider, 204 nut conversion block, 205 stop bar adapter block, 206 cylinder fixing plate, 207 cylinder, 3 positioning block, 301 groove, 302 perforation, 303 transmission nut, 304 transmission screw, 305 bearing support seat, 4 silicon steel sheet, 5 synchronous servo motor, 501 synchronous belt, 502 synchronous pulley, 503 output pulley, 504 tensioner, 505 synchronous screw, 6 pushing servo motor. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] Figures 1-8In the invention, a transformer core automatic lamination precision positioning tool is described, comprising a rack 1, on which a mounting top plate 101, a transfer bottom plate 102 and a mounting bottom plate 103 are provided in sequence from top to bottom. Two groups of positioning assemblies are provided on the mounting top plate 101, each group of positioning assemblies comprises mutually parallel baffles and a positioning block 3 on one side between the two baffles, the positioning block 3 being provided with a groove 301 adapted to one end of the processed silicon steel sheet 4; the two baffles can move inwardly, and the positioning block 3 can move toward the baffle direction; in the initial state, the spacing between the two baffles is greater than the width of the processed silicon steel sheet 4; the two baffles are provided with a synchronous drive device for driving the movement inwardly thereof, and the positioning block 3 is provided with a pushing drive device for driving the movement in the direction of the baffle. The two bars of each positioning combination are respectively a dynamic bar 201 and a static bar 202. The synchronous drive device includes a synchronous servo motor 5, a synchronous belt 501 and a pair of synchronous pulleys 502. The synchronous servo motor 5, the synchronous belt 501 and the synchronous pulley 502 are all installed on one side of the position of the mounting top plate 101, the transfer base plate 102 and the mounting base plate 103. The synchronous belt 501 is installed on the synchronous pulley 502 and the pair of synchronous pulleys 502. The synchronous servo motor 5 is connected to the central axis of the output pulley 503. The output pulley 503 is connected to the pair of synchronous pulleys 502 through the synchronous belt 501, and a tensioner 504 is provided to adjust the tightness of the synchronous belt 501. The central axis of the synchronous pulley 502 is connected to a synchronous screw rod 505. The thread directions of the two synchronous screw rods 505 are opposite. The synchronous screw rod 505 is connected to the bearing seat 104 supporting the synchronous screw rod 505. The bearing seat 1 04 is installed on the adapter base plate 102, and the bearing seat 104 is located at the front and rear ends of the synchronous screw rod 505; a positioning slide rail 105 is provided on the mounting base plate 103 or the adapter base plate 102, and a slider 203 adapted thereto is provided on the slide rail 105; the two synchronous screw rods 505 are respectively provided with a corresponding nut conversion block 204, and the nut conversion block 204 is fixed together with the slider 203, one of the synchronous screw rods 505 has a baffle adapter block 205 on the nut conversion block 204, and a cylinder fixing plate 206 is provided on the baffle adapter block 205, and a cylinder fixing plate 206 is provided on the cylinder fixing plate 206, and a cylinder 207 is provided on the cylinder 207, and the output shaft of the cylinder 207 is fixedly connected to the dynamic baffle 201 in each positioning combination; a baffle adapter block 205 is provided on the nut conversion block 204 of the other synchronous screw rod 505, and the baffle adapter block 205 is fixedly connected to the static baffle 202 in each positioning combination. A steel sheet support plate 106 and a steel sheet gasket 107 are provided on the mounting top plate 101. The dynamic stop bar 201 and the static stop bar 202 are fixed to the mounting top plate 104 through the steel sheet gasket 107. The steel sheet gasket 107 is located between the dynamic stop bar 201 and the static stop bar 202 and is used to place the silicon steel sheet 4. The groove 301 at the top of the positioning block 3 is provided with a through hole 302. When the positioning block 3 can move toward the stop bar direction, the steel sheet support plate 106 can pass through the through hole 302 at the top of the positioning block 3; the dynamic stop bar 201 and the static stop bar 202 can move horizontally on the steel sheet gasket 107.The pushing drive device is a pushing servo motor 6, and a transmission nut 303 is connected to the bottom of the positioning block 3. A transmission screw 304 that is compatible with it is screwed into the transmission nut 303. The transmission screw 304 is supported on the mounting base 103 by a bearing support seat 305. The transmission screw 304 is connected to the rotating shaft of the pushing servo motor 6. The positioning block 3 can move horizontally on the steel sheet support plate 106. When in use, the forward and reverse rotation of the pushing servo motor 6 is used to realize the back and forth movement of the positioning block 3.

[0030] When the processed silicon steel sheet 4 is placed between the dynamic stop bar 201 and the static stop bar 202 in the two positioning assemblies by the manipulator, the synchronous servo motor 5 is in forward transmission, driving the synchronous belt 501 to transmit, the two synchronous pulleys 502 rotate, and driving the two synchronous screw rods 505 to rotate. Since the thread directions of the two synchronous screw rods 505 are opposite, the nut conversion block 204 drives the dynamic stop bar 201 and the static stop bar 202 to move inward respectively. When the stop bar moves to the set position, the synchronous servo motor 5 stops working, and the lateral preliminary positioning of the silicon steel sheet 4 is achieved; the forward transmission of the push servo motor 6 drives the positioning block 3 to move toward the silicon steel sheet 4, and one side of the silicon steel sheet 4 is located in the groove 301 of the positioning block 3, pushing the silicon steel sheet 4 to the set position; the static stop bar 202 serves as the positioning backer of the silicon steel sheet 4, and the cylinder 207 works, and its output shaft is ejected, driving the dynamic stop bar 201 to move inward, so that the silicon steel sheet 4 is accurately positioned, and then the sheet is taken out by the manipulator. The output shaft of the cylinder 207 contracts, the synchronous servo motor 5 reverses, the pushing servo motor 6 reverses, and all components return to their initial states.

[0031] The present embodiment 1 adopts a two-combination design, which is very suitable for the precise positioning of the upper and lower yoke silicon steel sheets 4 of the transformer.

[0032] Example 2

[0033] This embodiment is basically the same as embodiment 1, except that: Figures 9-11 In the embodiment, three groups of positioning combinations are provided on the mounting top plate 101, and three rows of parallel longitudinal positioning of the transformer core automatic lamination production line are designed. When laminating the transformer core automatic lamination production line, the middle column and the left and right sheets are all parallel structures. The three rows of parallel longitudinal structures are adopted. The three silicon steel sheets 4 can be conveniently moved to the corresponding positions through this embodiment. The silicon steel sheet 4 at the middle column position of the middle positioning combination is precisely positioned, and the silicon steel sheet 4 at the left and right column positions of the left and right positioning combinations are precisely positioned. Its structure and principle are basically the same as those in Example 1, and the description of this embodiment is basically the same as that of Example 1.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformation made by using the contents of the description and drawings of the present invention, directly or indirectly applied to other related technical fields, is also included in the scope of protection of the present invention.

Claims

1. A transformer core automatic lamination precision positioning tool, characterized in that: The machine comprises a frame, a mounting top plate is provided on the frame, a positioning assembly is provided on the mounting top plate, the positioning assembly comprises mutually parallel baffles and a positioning block on one side between the two baffles, the positioning block is provided with a groove adapted to one end of the silicon steel sheet being processed; the two baffles can move inwardly, and the positioning block can move toward the baffles; in an initial state, the spacing between the two baffles is greater than the width of the silicon steel sheet being processed; the two baffles are provided with a synchronous driving device for driving the two baffles to move inwardly, and the positioning block is provided with a pushing driving device for driving the two baffles to move toward the baffles; A mounting base is provided on the shelf below the mounting top plate. The synchronous drive device includes a synchronous servo motor, a synchronous belt, an output pulley and a pair of synchronous pulleys. The synchronous pulleys are installed on the output pulley and the pair of synchronous pulleys. The rotating shaft of the synchronous servo motor is connected to the central axis of the output pulley. The central axis of each synchronous pulley is connected to a synchronous screw rod. The thread directions of the two synchronous screw rods are opposite. The synchronous screw rods are connected to the bearing seat supporting the screw rod. A positioning slide rail is provided on the mounting base, and a slider adapted thereto is provided on the positioning slide rail. A nut conversion block adapted thereto is respectively provided on the two synchronous screw rods. The nut conversion block is fixed together with the slider. The two nut conversion blocks are respectively fixedly connected to the two retaining bars in the positioning combination. The lifting mechanism includes: the two baffles are respectively a dynamic baffle and a static baffle, one of which is connected to a nut conversion block with a cylinder, and the output shaft of the cylinder is fixedly connected to the dynamic baffle in the positioning assembly.

2. The automatic lamination precision positioning tool for transformer core according to claim 1, characterized in that: The pushing drive device is a pushing servo motor. A transmission nut is connected below the positioning block. A transmission screw rod adapted to the transmission nut is screwed inside the transmission nut. The transmission screw rod is connected to the rotating shaft of the pushing servo motor.

3. The automatic lamination precision positioning tool for transformer cores according to claim 1 or 2, characterized in that: There are two or more positioning assemblies, the synchronous driving device drives the blocking bars of each positioning assembly to move at the same time, and the pushing driving device drives the positioning blocks of each positioning assembly to move at the same time.

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