Transformer insulation paper ring circle shearing device

Abstract

A circle shearing device for an insulation paper ring of a transformer belongs to the technical field of transformer production and comprises a central part, a side pressing part, a rotating part and a girdling part, the side pressing part is mounted on the central part, the rotating part is hinged to the top of the central part, and the girdling part is mounted on the rotating part. The center part comprises an air bag, a lower cavity, an installation boss, a limiting boss, a threaded hole and a handle, the air bag is installed at the bottom of the lower cavity in a sealed mode, the upper portion of the lower cavity is connected with the installation boss, the side pressing part is installed on the installation boss, the limiting boss is arranged above the installation boss, and the rotating part is installed on the limiting boss. The side pressing part comprises an inclined pressing ring and an upper boss, the upper boss is arranged on the top of the inclined pressing ring, and the upper boss is matched with the installation boss to achieve installation of the side pressing part. The rotating part comprises a clamping ring, a transverse rod and a V-shaped groove, the clamping ring is installed on the center part and located on the limiting boss, and the transverse rod extends on the side of the clamping ring. The annular cutting part comprises a vertical rod, a sleeve, a spring and a cutting wheel, the vertical rod is installed on the transverse rod in a sleeving mode, and the sleeve is installed on the lower portion of the vertical rod in a sleeving mode.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer production, and in particular relates to a transformer insulation paper ring circular shearing device. Background Art

[0002] Insulating paper rings, as end rings, play an important role in transformer production. They are mainly used to fix and insulate transformer windings to prevent short circuit failures inside the transformer. The production of insulating paper rings is very conventional, and there are many production methods on site. Such seemingly simple operations often require simple tools and are highly dependent on the operator's experience. Therefore, the industry needs a tool that is suitable for this type of operation and can efficiently complete the paper ring circular cutting. Summary of the invention

[0003] The present invention provides a transformer insulating paper ring circular shearing device to solve the problems in the above-mentioned background technology.

[0004] The technical problem solved by the present invention is achieved by adopting the following technical solutions: A transformer insulating paper ring circular shearing device comprises a central part, a side pressure part, a rotating part and a ring cutting part, wherein the side pressure part is mounted on the central part, the rotating part is hingedly mounted on the top of the central part, and the ring cutting part is mounted on the rotating part.

[0005] The central part includes an airbag, a lower cavity, a mounting boss, a limiting boss, a threaded hole and a handle. The airbag seal is installed at the bottom of the lower cavity. The upper part of the lower cavity is connected to the mounting boss. The side pressure part is installed on the mounting boss. There is a limiting boss above the mounting boss, and the rotating part is installed on the limiting boss. The top of the airbag has a docking interface, which is bonded to the bottom of the lower cavity. The side pressure part includes an oblique pressure ring and an upper boss. The side pressure part is made of hard rubber material and is an umbrella-shaped structure. The lowest point of the oblique pressure ring is higher than the lowest point of the airbag. The top of the oblique pressure ring has an upper boss. The upper boss cooperates with the mounting boss to realize the installation of the side pressure part. The rotating part includes a clamping ring, a cross bar and a V-shaped groove. The clamping ring is installed on the central part, located on the limiting boss, and a retaining ring is installed in the retaining ring groove for limiting. The cross bar extends to the side of the clamping ring. The circular cutting part includes a vertical rod, a sleeve, a spring and a cutting wheel. The vertical rod is sleeved and installed on the horizontal rod, and the sleeve is sleeved and installed on the lower part of the vertical rod. The spring is installed in the sleeve, and the spring is located below the lower end of the vertical rod. Under the action of the spring, the sleeve always has a tendency to squeeze downward. The cutting wheel is hingedly installed at the bottom of the sleeve. Under the action of the sleeve, the cutting wheel presses the insulating paperboard. As the vertical rod rotates one circle with the rotating part, the paper circle circular cutting operation is completed. A limit pin is installed at the bottom of the vertical rod. On the one hand, the limit pin is inserted into the bottom of the vertical rod, and on the other hand, it is inserted into the side groove of the sleeve. The side wall of the sleeve has a side groove that runs through the front and back, and the bottom of the sleeve has two ears, and the cutting wheel is hinged at the bottom of the two ears.

[0006] Furthermore, a threaded hole is provided at the top of the center portion, and a threaded rod is provided at the bottom of the handle. The threaded rod cooperates with the threaded hole to realize the installation of the handle on the center portion. Holding the handle facilitates the operation of the entire circular shear device.

[0007] Furthermore, the bottom of the airbag has a lower dot. During operation, a suitable coating is applied on the lower dot, and the mark left on the cardboard is the center point of the cut paper circle, which can avoid the subsequent paper circle alignment operation.

[0008] Furthermore, an air nozzle is installed on the side of the lower cavity, which is connected to the interior of the lower cavity and the airbag. The air pressure inside the airbag can be adjusted through the air nozzle. When the airbag has a suitable air pressure, it can easily complete the compression operation of the cardboard and leave a center mark in the center of the cardboard. Of course, it should be added that the airbag should be made of a hard material, otherwise, when the airbag compresses the insulating cardboard, the airbag may move horizontally, resulting in an inaccurate center.

[0009] Furthermore, the side of the mounting boss has four evenly distributed inner mounting holes, and the side pressure part is installed on the mounting boss through the inner mounting holes. The upper boss has outer mounting holes around it, and the outer mounting holes correspond to the inner mounting holes and are installed using pins.

[0010] Furthermore, a retaining spring groove is provided above the limiting boss, and a retaining spring is installed in the retaining spring groove to rotatably connect the rotating part above the limiting boss.

[0011] Furthermore, a V-shaped groove is provided on the outer surface of the upper surface of the horizontal rod, and a cylinder is provided on the top of the vertical rod. The cylinder is butt-jointed with the horizontal rod and a threaded boss is provided on the top of the cylinder. A clamping screw is installed in the threaded boss. The screw cooperates with the V-shaped groove downward to clamp the lateral position of the vertical rod, thereby facilitating the adjustment of the diameter of the cut paper ring.

[0012] Furthermore, the bottom of the side groove is laterally connected to the limit groove. When the cutting operation is performed, the limit pin is fixed in the side groove and moves up and down. When the cutting operation is not performed, the sleeve is pushed upward and rotated to allow the limit pin to enter the limit groove, so that the sleeve is restricted to a high position and cannot touch the cardboard. This state is usually used for center operation positioning before cutting.

[0013] The beneficial effects of the present invention are: The present invention is used for the circular cutting operation of insulating paper rings during the production of transformer boxes. The present invention has an air bag for center positioning and can be appropriately compressed. The bottom of the air bag can also be embossed to leave a center point of the circle. The present invention also has a side pressing portion for stretching the surface of the paperboard. The rotating portion and the cutting portion located on the side can easily complete the paper ring cutting. In addition, the circular cutting portion can also adjust the height of the cutting wheel as needed, which is convenient for adjusting the appropriate cutting wheel height in the positioning operation and the subsequent cutting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the present invention; Figure 2 It is a front view of the present invention; Figure 3 is an exploded view of the present invention; In the figure: 10. center part, 11. air bag, 111. docking port, 112. lower dot, 12. lower cavity, 121. air nozzle, 13. mounting boss, 131. inner mounting hole, 14. limiting boss, 141. retaining ring groove, 15. threaded hole, 16. handle, 161. threaded rod, 20. side pressure part, 21. oblique pressure ring, 22. upper boss, 221. outer mounting hole, 30. rotating part, 31. retaining ring, 32. cross bar, 33. V-shaped groove, 40. annular cutting part, 41. vertical rod, 411. cylinder, 412. threaded boss, 413. clamping screw, 414. limiting pin, 42. sleeve, 421. side groove, 422. limiting groove, 423. double ears, 43. spring, 44. cutting wheel. DETAILED DESCRIPTION

[0015] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0016] See also Figure 1-Figure 3 The transformer insulating paper ring circular shearing device shown includes a central portion 10, a side pressure portion 20, a rotating portion 30 and a ring cutting portion 40, wherein the side pressure portion 20 is mounted on the central portion 10, the rotating portion 30 is hingedly mounted on the top of the central portion 10, and the ring cutting portion 40 is mounted on the rotating portion 30.

[0017] The central portion 10 includes an airbag 11, a lower cavity 12, a mounting boss 13, a limiting boss 14, a threaded hole 15 and a handle 16. The airbag 11 is sealed and installed at the bottom of the lower cavity 12. The mounting boss 13 is connected to the top of the lower cavity 12. The side pressure portion 20 is installed on the mounting boss 13. A limiting boss 14 is provided above the mounting boss 13. A rotating portion 30 is installed on the limiting boss 14. A threaded hole 15 is provided at the top of the central portion 10. A handle 16 is installed upward from the threaded hole 15. Holding the handle 16 facilitates the operation of the entire circular shearing device.

[0018] The top of the airbag 11 has a docking port 111, which is bonded to the bottom of the lower cavity 12. The bottom of the airbag 11 has a lower dot 112. During operation, a suitable coating is applied to the lower dot 112, and the mark left on the cardboard is the center point of the cut paper circle, which can avoid the subsequent paper circle alignment operation.

[0019] An air nozzle 121 is installed on the side of the lower cavity 12. The air nozzle 121 is connected to the interior of the lower cavity 12 and the airbag 11. The air pressure inside the airbag 11 can be adjusted through the air nozzle 121. When the airbag 11 has a suitable air pressure, it can easily complete the compression operation of the cardboard and leave a center mark in the center of the cardboard. Of course, it should be supplemented that the airbag 11 should be made of a hard material, otherwise, when the airbag 11 compresses the insulating cardboard, the airbag 11 may move horizontally, resulting in an inaccurate center mark.

[0020] The side of the mounting boss 13 has four evenly distributed inner mounting holes 131 , and the side pressing portion 20 is mounted on the mounting boss 13 through the inner mounting holes 131 .

[0021] A retaining spring groove 141 is formed above the limiting boss 14 . A retaining spring is installed in the retaining spring groove 141 to rotatably connect the rotating part 30 to the top of the limiting boss 14 .

[0022] A threaded rod 161 is provided at the bottom of the handle 16 , and the threaded rod 161 cooperates with the threaded hole 15 to realize the installation of the handle 16 on the central portion 10 .

[0023] The side pressure part 20 includes an oblique pressure ring 21 and an upper boss 22. The side pressure part 20 is made of hard rubber material and is an umbrella-shaped structure. The lowest point of the oblique pressure ring 21 is higher than the lowest point of the airbag 11, reserving extrusion space for the airbag 11. The oblique pressure ring 21 has almost no compression space. When the oblique pressure ring 21 presses the paper ring downward, it relies on its small amount of elasticity and its outward inclined structure to flatten the paper ring and tighten it outward. The top of the oblique pressure ring 21 has an upper boss 22. The upper boss 22 cooperates with the mounting boss 13 to realize the installation of the side pressure part 20. The upper boss 22 has an outer mounting hole 221 around it. The outer mounting hole 221 corresponds to the inner mounting hole 131 and is installed using pins.

[0024] The rotating part 30 includes a clamping ring 31, a cross bar 32 and a V-shaped groove 33. The clamping ring 31 is installed on the central part 10, located on the limiting boss 14, and a clamping spring is installed in the clamping spring groove 141 for limiting. The cross bar 32 extends laterally from the clamping ring 31, and a V-shaped groove 33 is provided on the outer surface of the upper surface of the cross bar 32.

[0025] The circular cutting part 40 includes a vertical rod 41, a sleeve 42, a spring 43 and a cutting wheel 44. The vertical rod 41 is sleeved and installed on the cross rod 32, the sleeve 42 is sleeved and installed on the lower part of the vertical rod 41, and the spring 43 is installed in the sleeve 42. The spring 43 is located below the lower end of the vertical rod 41. Under the action of the spring 43, the sleeve 42 always has a tendency to be squeezed downward. The cutting wheel 44 is hingedly installed at the bottom of the sleeve 42. Under the action of the sleeve 42, the cutting wheel 44 presses the insulating paperboard. As the vertical rod 41 rotates one circle with the rotating part 30, the paper ring circular cutting operation is completed.

[0026] The top of the vertical rod 41 has a cylinder 411, which is butt-jointed with the horizontal rod 32. The top of the cylinder 411 has a threaded boss 412, in which a clamping screw 413 is installed. The screw 413 cooperates with the V-shaped groove 33 downward to clamp the horizontal position of the vertical rod 41, so as to facilitate the adjustment of the diameter of the cut paper ring. A limit pin 414 is installed at the bottom of the vertical rod 41. The limit pin 414 is inserted into the bottom of the vertical rod 41 on one hand, and is inserted into the side groove 421 of the sleeve 42 on the other hand.

[0027] The side wall of the sleeve 42 has a side groove 421 that runs through the front and back. The bottom of the side groove 421 is horizontally connected to the limit groove 422. When the cutting operation is performed, the limit pin 414 moves up and down in the side groove 421. When the cutting operation is not performed, the sleeve 42 is pushed upward and rotated to allow the limit pin 414 to enter the limit groove 422, so that the sleeve 42 is limited to a high position and cannot touch the cardboard. This state is usually used for center operation positioning before cutting. The bottom of the sleeve 42 has two ears 423, and the cutting wheel 44 is hinged at the bottom of the two ears 423.

[0028] The working principle of the present invention is: first push the sleeve 42 upward, rotate the limit pin 414 into the limit groove 422, ensure that the cutting wheel 44 is in a high position and will not affect the cardboard. Adjust the position of the vertical rod 41 on the cross bar 32 to the required cutting radius. This operation can be adjusted by measurement, or a scale can be left on the cross bar 32 in advance to indicate the cutting radius corresponding to the position of the vertical rod 41, and then use the clamping screw 413 to lock the lateral position of the vertical rod 41. Apply a suitable paint on the lower dot 112, hold the handle 16, and press down on the cardboard. Although the airbag 11 is made of a hard material, it should still be pressed vertically downward during the pressing process to prevent the airbag 11 from moving laterally until the side pressure part 20 presses the cardboard and continues to press the entire device. Then, the sleeve 42 is pushed up and rotated to push the limit pin 414 into the side groove 421. The sleeve 42 is then pressed downward under the action of the spring 43 until the cardboard is pressed tightly. The cross bar 32 is rotated one circle to complete the circular cutting operation of the cardboard. If necessary, it can be rotated several more times until the circular cutting operation is completed.

[0029] The above embodiments mainly illustrate the transformer insulation paper ring circular shearing device of the present invention. Although only limited embodiments and technical features are described, those skilled in the art should understand that the present invention can be implemented in many other forms without departing from its main purpose and scope. Therefore, the embodiments shown are regarded as illustrative rather than restrictive, and the present invention may cover various modifications and replacement schemes without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A transformer insulation paper ring circular shearing device, comprising a central portion (10), a side pressure portion (20), a rotating portion (30) and a circular cutting portion (40), characterized in that: The side pressure part (20) is mounted on the central part (10), the rotating part (30) is hingedly mounted on the top of the central part (10), the annular cutting part (40) is mounted on the rotating part (30), the central part (10) comprises an airbag (11), a lower cavity (12), a mounting boss (13) and a limiting boss (14), the airbag (11) is sealingly mounted on the bottom of the lower cavity (12), the upper part of the lower cavity (12) is connected to the mounting boss (13), and the side pressure part (20) is mounted on the mounting boss (13) A limiting boss (14) is provided above the mounting boss (13), a rotating part (30) is installed on the limiting boss (14), a docking port (111) is provided at the top of the airbag (11), the docking port (111) is bonded to the bottom of the lower cavity (12), a side pressure part (20) comprises an oblique pressure ring (21) and an upper boss (22), the side pressure part (20) is made of hard rubber material and is an umbrella-shaped structure, an upper boss (22) is provided at the top of the oblique pressure ring (21), and the upper boss (22) is connected to the mounting boss (1 3) cooperate to realize the installation of the side pressure part (20), the rotating part (30) includes a clamping ring (31), a cross bar (32) and a V-shaped groove (33), the clamping ring (31) is installed on the central part (10) and is located on the limiting boss (14), the cross bar (32) is extended laterally from the clamping ring (31), the annular cutting part (40) includes a vertical rod (41), a sleeve (42), a spring (43) and a cutting wheel (44), the vertical rod (41) is sleeved and installed on the cross bar (32), the sleeve (42) is sleeved and installed on the A spring (43) is installed in the sleeve (42) at the lower part of the vertical rod (41), and the spring (43) is located below the lower end of the vertical rod (41). A cutting wheel (44) is hingedly installed at the bottom of the sleeve (42). A limit pin (414) is installed at the bottom of the vertical rod (41) and is inserted into a side groove (421) of the sleeve (42). The side wall of the sleeve (42) has a side groove (421) that passes through from front to back. The bottom of the sleeve (42) has two ears (423), and the cutting wheel (44) is hinged at the bottom of the two ears (423).

2. The transformer insulation paper circle shearing device according to claim 1, characterized in that: The top of the central part (10) is provided with a threaded hole (15), a handle (16) is installed upward through the threaded hole (15), and the bottom of the handle (16) is provided with a threaded rod (161), and the threaded rod (161) cooperates with the threaded hole (15) to realize the installation of the handle (16) on the central part (10).

3. The transformer insulation paper circle shearing device according to claim 1, characterized in that: The bottom of the air bag (11) has a lower dot (112).

4. The transformer insulation paper circle shearing device according to claim 1, characterized in that: An air nozzle (121) is installed on the side of the lower cavity (12), and the air nozzle (121) is connected to the interior of the lower cavity (12) and to the air bag (11). The air pressure inside the air bag (11) can be adjusted through the air nozzle (121).

5. The transformer insulation paper circle shearing device according to claim 1, characterized in that: The side of the mounting boss (13) has four evenly distributed inner mounting holes (131), and the circumference of the upper boss (22) has outer mounting holes (221), the outer mounting holes (221) correspond to the inner mounting holes (131) and are mounted using pins.

6. The transformer insulation paper circle shearing device according to claim 1, characterized in that: A retaining spring groove (141) is provided above the limiting boss (14), and a retaining spring is installed in the retaining spring groove (141) to rotatably connect the rotating part (30) above the limiting boss (14).

7. The transformer insulation paper circle shearing device according to claim 1, characterized in that: The upper surface of the cross bar (32) is provided with a V-shaped groove (33) on the outside, and the top of the vertical bar (41) is provided with a cylinder (411), the cylinder (411) and the cross bar (32) are butt-jointed and installed, the top of the cylinder (411) is provided with a threaded boss (412), and a clamping screw (413) is installed in the threaded boss (412), and the screw (413) cooperates with the V-shaped groove (33) downward to clamp the horizontal position of the vertical bar (41).

8. The transformer insulation paper circle shearing device according to claim 1, characterized in that: The bottom of the side groove (421) is laterally connected to the limiting groove (422), and the sleeve (42) is pushed upward and rotated to allow the limiting pin (414) to enter the limiting groove (422), so that the sleeve (42) is limited to a high position.

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