Silicon steel sheet raw material roll positioning expansion shaft

Abstract

The utility model belongs to the technical field of transformer manufacturing, and particularly relates to a silicon steel sheet raw material roll positioning expansion shaft which comprises a rack, a rotating expansion shaft and a driving mechanism, and a tensioning device comprises a positioning shaft plate, a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the second connecting rod is hinged to the driving ring through the first connecting rod, the positioning shaft plate is hinged to the two ends of the second connecting rod through a third connecting rod and a fourth connecting rod, the third connecting rod and the fourth connecting rod are parallel to each other in the axis direction of the rotating shaft, and the positioning shaft plate, the second connecting rod, the third connecting rod and the fourth connecting rod jointly form a parallelogram structure. According to the tensioning device of the parallelogram structure, the position height of the positioning shaft plate is changed through the parallelogram structure so as to achieve expansion and contraction of the tensioning shaft, and when the positioning shaft plate is in an expansion limit state, the maximum diameter of the tensioning shaft is matched with the size of an inner ring of a raw material roll. Therefore, the silicon steel coil at the inner ring of the raw material coil is prevented from being extruded and deformed.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer manufacturing, and in particular relates to a silicon steel sheet raw material roll positioning expansion shaft. Background Art

[0002] In the production of silicon steel sheets, the rolled steel sheet raw material coils need to be supported by an expansion shaft, and the silicon steel sheets are unfolded with the help of the rotation of the expansion shaft and released into the slicing mechanism of the silicon steel sheets. Because the silicon steel sheets need to be beveled and punched, the release of the silicon steel sheets needs to be carried out smoothly, otherwise it is easy to cause damage to the bevel cutting equipment and punching device.

[0003] The existing expansion shaft is provided with a group of positioning shaft plates that can be opened and contracted relative to the rotating shaft. Wedge blocks with opposite wedge tips are respectively provided on the positioning shaft plate and the rotating shaft. The positioning shaft plate is pushed to move along the wedge blocks of the rotating shaft by the translation of a driving ring with translational freedom along the axis of the rotating shaft, thereby achieving expansion and contraction, and clamping or releasing the raw material roll.

[0004] The inner ring size of the existing raw material roll is fixed, but the above-mentioned expansion shaft is a universal part. The expansion shaft will stop expanding only when it is subjected to a certain pressure. After the expansion shaft expands, the inner ring of the raw material roll is easily subjected to excessive pressure, causing the silicon steel coil at the inner ring of the raw material roll to be easily squeezed and deformed. Utility Model Content

[0005] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a silicon steel sheet raw material roll positioning expansion shaft, which adopts a tensioning device with a parallelogram structure and uses the parallelogram structure to change the position of the positioning shaft plate to achieve the expansion and contraction of the expansion shaft. When the positioning shaft plate is in the limit state of expansion, the maximum diameter of the expansion shaft matches the inner ring size of the raw material roll, thereby avoiding the silicon steel coil at the inner ring of the raw material roll from being squeezed and deformed.

[0006] The specific technical solution adopted by the utility model is:

[0007] A silicon steel sheet raw material roll positioning expansion shaft comprises a frame and a rotating expansion shaft and a driving mechanism arranged on the frame, the rotating expansion shaft comprises a driving motor, a rotating shaft and a tensioning device, the tensioning device is fixedly connected to the rotating shaft and has the freedom of rotation with the help of the driving motor, the driving mechanism comprises a telescopic cylinder and a driving ring, the tensioning device is connected to the driving ring and has the freedom of translation with the help of the telescopic cylinder, the tensioning device comprises a positioning shaft plate, a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the second connecting rod is hinged to the driving ring with the help of the first connecting rod, the positioning shaft plate is hinged to the two ends of the second connecting rod with the help of the third connecting rod and the fourth connecting rod, the third connecting rod and the fourth connecting rod are parallel to each other along the axial direction of the rotating shaft, and the positioning shaft plate, the second connecting rod, the third connecting rod and the fourth connecting rod together form a parallelogram structure.

[0008] The tensioning device also includes a fixed plate, which is parallel to the plane where the parallelogram structure is located. The bottom of the fixed plate is fixedly connected to the rotating shaft. The middle part of the third connecting rod and the middle part of the fourth connecting rod are respectively hinged to the fixed plate. The third connecting rod and the fourth connecting rod respectively have the freedom to swing around their respective hinge points with the fixed plate as the center.

[0009] The fixed end of the driving motor and the fixed end of the telescopic cylinder are respectively fixedly connected to the frame, the output end of the driving motor is connected to the end center of the rotating shaft, and the telescopic end of the telescopic cylinder is fixedly connected to the driving ring.

[0010] The driving ring includes a translation ring and a rotating ring. The translation ring is fixedly connected to the telescopic end of the telescopic cylinder. The first connecting rod is hinged to the rotating ring. A bearing is also provided between the translation ring and the rotating ring. The rotating ring has the freedom of rotation by means of the bearing.

[0011] The positioning expansion shaft also includes a bearing mechanism, which includes a fixed sleeve and a sliding sleeve sleeved on the outside of the fixed sleeve. The fixed sleeve is arranged along the axial direction of the rotating shaft and the end of the fixed sleeve is fixedly connected to the frame. The rotating shaft passes through the barrel cavity of the fixed sleeve, and the translation ring is fixedly connected to the sliding sleeve. The translation ring has the freedom to translate along the fixed sleeve with the help of the sliding sleeve.

[0012] The tensioning device is provided in a plurality of groups in a ring shape around the rotating shaft, the positioning shaft plate is an arc-shaped plate structure, and the positioning shaft plates of the plurality of tensioning devices together form a circular ring structure.

[0013] When the tensioning device is tightened, the third connecting rod and the fourth connecting rod are respectively perpendicular to the axial direction of the rotating shaft, and the parallelogram structure forms a self-locking.

[0014] The beneficial effects of the utility model are:

[0015] The utility model adopts a tensioning device with a parallelogram structure. The parallelogram structure can keep the positioning shaft plate in a parallel state at all times. Since the first connecting rod is connected to the driving ring, the translation of the driving ring will drive the first connecting rod to translate, thereby dragging the hinge point of the first connecting rod and the second connecting rod to move, that is, dragging the lower left corner of the parallelogram structure to move, and then making the height of the entire parallelogram structure longer or shorter to control the expansion and contraction of the expansion shaft. When the positioning shaft plate is in the limit state of expansion, that is, the third connecting rod and the fourth connecting rod are in a vertical state, the maximum diameter of the expansion shaft formed by the multiple groups of positioning shaft plates matches the inner ring size of the raw material roll, thereby avoiding the silicon steel roll at the inner ring of the raw material roll from being squeezed and deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the side structure when the expansion shaft is expanded;

[0017] Figure 2 This is a schematic diagram of the front structure when the expansion shaft is expanding;

[0018] Figure 3 It is a schematic diagram of the side structure when the expansion shaft is retracted;

[0019] Figure 4 This is a schematic diagram of the front structure when the expansion shaft is retracted;

[0020] In the attached drawings, 1, frame, 2, driving motor, 3, rotating shaft, 4, telescopic cylinder, 5, positioning shaft plate, 6, first connecting rod, 7, second connecting rod, 8, third connecting rod, 9, fourth connecting rod, 10, fixed plate, 11, translation ring, 12, rotating ring, 13, bearing, 14, fixed sleeve, 15, sliding sleeve. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0022] Specific embodiments, such as Figure 1-4 As shown, the utility model provides a silicon steel sheet raw material roll positioning expansion shaft, including a frame 1 and a rotating expansion shaft and a driving mechanism arranged on the frame 1, the rotating expansion shaft includes a driving motor 2, a rotating shaft 3 and a tensioning device, the tensioning device is fixedly connected to the rotating shaft 3 and has the freedom of rotation with the help of the driving motor 2, the driving mechanism includes a telescopic cylinder 4 and a driving ring, the tensioning device is connected to the driving ring and has the freedom of translation with the help of the telescopic cylinder 4, the tensioning device includes a positioning shaft plate 5, a first connecting rod 6, a second connecting rod 7, a third connecting rod 8 and a fourth connecting rod 9, the second connecting rod is hinged to the driving ring with the help of the first connecting rod 6, the positioning shaft plate 5 is hinged to the two ends of the second connecting rod 7 with the help of the third connecting rod 8 and the fourth connecting rod 9, the third connecting rod 8 and the fourth connecting rod 9 are parallel to each other along the axial direction of the rotating shaft 3, the positioning shaft plate 5, the second connecting rod 7, the third connecting rod 8 and the fourth connecting rod 9 together form a parallelogram structure.

[0023] The inner ring size of the existing raw material roll is fixed, but the expansion shaft currently on the market is a universal part. The expansion shaft will stop expanding only when it is subjected to a certain pressure. After the expansion shaft expands, the inner ring of the raw material roll is easily subjected to excessive pressure, causing the silicon steel coil at the inner ring of the raw material roll to be easily squeezed and deformed.

[0024] Therefore, the utility model adopts a tensioning device with a parallelogram structure. The parallelogram structure can make the positioning shaft plate 5 always in a parallel state. Since the first connecting rod 6 is connected to the driving ring, the translation of the driving ring will drive the first connecting rod 6 to translate, thereby dragging the hinge point of the first connecting rod 6 and the second connecting rod 7 to move, that is, dragging the lower left corner of the parallelogram structure to move, and then making the height of the entire parallelogram structure longer or shorter to control the expansion and contraction of the expansion shaft. When the positioning shaft plate 5 is in the limit state of expansion, that is, the third connecting rod 8 and the fourth connecting rod 9 are in a vertical state, the maximum diameter of the expansion shaft formed by multiple groups of positioning shaft plates 5 matches the inner ring size of the raw material roll, thereby avoiding the silicon steel roll at the inner ring of the raw material roll from being squeezed and deformed.

[0025] In addition, a pad is provided on the surface of the positioning shaft plate 5. The pad is made of rubber and can play a buffering role to reduce the deformation of the inner ring of the raw material roll.

[0026] The tensioning device also includes a fixed plate 10, which is parallel to the plane where the parallelogram structure is located. The bottom of the fixed plate 10 is fixedly connected to the rotating shaft 3. The middle parts of the third connecting rod 8 and the middle parts of the fourth connecting rod 9 are respectively hinged to the fixed plate 10. The third connecting rod 8 and the fourth connecting rod 9 have the freedom to swing around their respective hinge points with the fixed plate 10. Since the third connecting rod 8 and the fourth connecting rod 9 are limited by the fixed plate 10, they can only swing around their respective center points and cannot move, thereby preventing the entire parallelogram structure from only translating but not deforming, thereby ensuring that the pulling of the first connecting rod 6 will drive the parallelogram structure to undergo a high change.

[0027] The fixed ends of the driving motor 2 and the telescopic cylinder 4 are respectively fixedly connected to the frame 1, the output end of the driving motor 2 is connected to the end center of the rotating shaft 3, and the telescopic end of the telescopic cylinder 4 is fixedly connected to the driving ring.

[0028] The driving ring includes a translation ring 11 and a rotating ring 12. The translation ring 11 is fixedly connected to the telescopic end of the telescopic cylinder 4. The first connecting rod 6 is hinged to the rotating ring 12. A bearing 13 is also arranged between the translation ring 11 and the rotating ring 12. The rotating ring 12 has the freedom of rotation with the aid of the bearing 13. Since the fixed end of the telescopic cylinder 4 is fixedly connected to the frame 1, the telescopic end of the telescopic cylinder 4 cannot be rotated. To solve this problem, the driving ring of the utility model is composed of a translation ring 11 and a rotating ring 12. During the telescopic end of the telescopic cylinder 4, due to the existence of the bearing 13, the rotating ring 12 can rotate with the rotating shaft 3, while the translation ring 11 only translates.

[0029] The positioning expansion shaft also includes a bearing mechanism, which includes a fixed sleeve 14 and a sliding sleeve 15 sleeved on the outside of the fixed sleeve 14. The fixed sleeve 14 is arranged along the axial direction of the rotating shaft 3 and the end of the fixed sleeve 14 is fixedly connected to the frame 1. The rotating shaft 3 passes through the barrel of the fixed sleeve. The translation ring 11 is fixedly connected to the sliding sleeve 15. The translation ring 11 has the freedom to translate along the fixed sleeve 14 with the help of the sliding sleeve 15. The rotating ring 12 in the utility model is a groove-shaped structure with a through hole in the middle. The translation ring 11 is located in the groove cavity of the groove-shaped structure of the rotating ring 12. The peripheral layer of the translation ring 11 is tightly attached to the inner wall of the groove cavity of the rotating ring 12 by means of bearings 13. Since the telescopic cylinder 4 can only withstand the force along the telescopic direction of the telescopic end and needs to avoid bearing forces in other directions, the utility model is provided with a bearing mechanism for bearing the gravity in the vertical direction, wherein the fixed sleeve 14 is used as a bearing component to support the gravity generated by the driving ring. In order to ensure that the translation ring 11 can slide along the fixed sleeve 14, the two are connected by means of a sliding sleeve 15, thereby ensuring the smooth translation of the driving ring.

[0030] The tensioning device is provided in a plurality of groups in a ring shape around the rotating shaft 3 . The positioning shaft plate 5 is an arc-shaped plate structure. The positioning shaft plates 5 of the plurality of tensioning devices together form a circular ring structure.

[0031] When the tensioning device is tightened, the third connecting rod 8 and the fourth connecting rod 9 are respectively perpendicular to the axial direction of the rotating shaft 3 and the parallelogram structure forms a self-locking state. When the third connecting rod 8 and the fourth connecting rod 9 are in a vertical state, the end of the positioning shaft plate 5 close to the driving ring abuts against the surface of the rotating ring 12. At this time, the parallelogram structure presents a special rectangular structure. If the first connecting rod 6 is not moved, the parallelogram structure will not be deformed, that is, when the third connecting rod 8 and the fourth connecting rod 9 do not swing, the entire parallelogram structure is in a self-locking state.

Claims

1. A silicon steel sheet raw material roll positioning expansion shaft, comprising a frame (1) and a rotating expansion shaft and a driving mechanism arranged on the frame (1), the rotating expansion shaft comprising a driving motor (2), a rotating shaft (3) and a tensioning device, the tensioning device is fixedly connected to the rotating shaft (3) and has a degree of freedom of rotation with the help of the driving motor (2), the driving mechanism comprises a telescopic cylinder (4) and a driving ring, the tensioning device is connected to the driving ring and has a degree of freedom of translation with the help of the telescopic cylinder (4), characterized in that: The tensioning device comprises a positioning shaft plate (5), a first connecting rod (6), a second connecting rod (7), a third connecting rod (8) and a fourth connecting rod (9); the second connecting rod (7) is hinged to the driving ring by means of the first connecting rod (6); the positioning shaft plate (5) is hinged to the two ends of the second connecting rod (7) by means of the third connecting rod (8) and the fourth connecting rod (9); the third connecting rod (8) and the fourth connecting rod (9) are parallel to each other along the axial direction of the rotating shaft (3); the positioning shaft plate (5), the second connecting rod (7), the third connecting rod (8) and the fourth connecting rod (9) together form a parallelogram structure.

2. The silicon steel sheet raw material coil positioning expansion shaft according to claim 1, characterized in that: The tensioning device also includes a fixing plate (10), wherein the fixing plate (10) is parallel to the plane where the parallelogram structure is located, and the bottom of the fixing plate (10) is fixedly connected to the rotating shaft (3). The middle part of the third connecting rod (8) and the middle part of the fourth connecting rod (9) are respectively hinged to the fixing plate (10), and the third connecting rod (8) and the fourth connecting rod (9) respectively have the freedom to swing around their respective hinge points with the fixing plate (10) as the center.

3. The silicon steel sheet raw material coil positioning expansion shaft according to claim 1, characterized in that: The fixed end of the drive motor (2) and the fixed end of the telescopic cylinder (4) are respectively fixedly connected to the frame (1), the output end of the drive motor (2) is connected to the rotating shaft (3), and the telescopic end of the telescopic cylinder (4) is fixedly connected to the drive ring.

4. The silicon steel sheet raw material coil positioning expansion shaft according to claim 1, characterized in that: The driving ring comprises a translation ring (11) and a rotating ring (12); the translation ring (11) is fixedly connected to the telescopic end of the telescopic cylinder (4); the first connecting rod (6) is hinged to the rotating ring (12); a bearing (13) is further provided between the translation ring (11) and the rotating ring (12); the rotating ring (12) has a degree of freedom of rotation by means of the bearing (13).

5. The silicon steel sheet raw material coil positioning expansion shaft according to claim 4, characterized in that: The positioning expansion shaft also includes a bearing mechanism, which includes a fixed sleeve (14) and a sliding sleeve (15) sleeved on the outside of the fixed sleeve (14). The fixed sleeve (14) is arranged along the axial direction of the rotating shaft (3) and the end of the fixed sleeve (14) is fixedly connected to the frame (1). The rotating shaft (3) passes through the barrel of the fixed sleeve (14). The translation ring (11) is fixedly connected to the sliding sleeve (15). The translation ring (11) has the freedom to translate along the fixed sleeve (14) by means of the sliding sleeve (15).

6. The silicon steel sheet raw material coil positioning expansion shaft according to claim 1, characterized in that: The tensioning device is provided in a plurality of groups in a ring shape around the rotating shaft (3); the positioning shaft plate (5) is an arc-shaped plate structure; the positioning shaft plates (5) of the plurality of tensioning device groups together form a circular ring structure.

7. The silicon steel sheet raw material coil positioning expansion shaft according to claim 1, characterized in that: When the tensioning device is tightened, the third connecting rod (8) and the fourth connecting rod (9) are respectively perpendicular to the axial direction of the rotating shaft (3), and the parallelogram structure forms a self-locking structure.

Images