A transformer insulation paper ring cutting device

Abstract

A transformer insulating paper ring circular shearing device, belonging to the field of transformer manufacturing technology, includes a central part, a side-pressure part, a rotating part, and a ring-cutting part. The side-pressure part is mounted on the central part, the rotating part is hinged to the top of the central part, and the ring-cutting part is mounted on the rotating part. The central part includes an air bladder, a lower cavity, a mounting boss, a limiting boss, a threaded hole, and a handle. The air bladder is sealed and mounted at the bottom of the lower cavity. The mounting boss is connected above the lower cavity, and the side-pressure part is mounted on the mounting boss. A limiting boss is located above the mounting boss, and the rotating part is mounted on the limiting boss. The side-pressure part includes a inclined pressure ring and an upper boss. The upper boss is located at the top of the inclined pressure ring, and the upper boss cooperates with the mounting boss to install the side-pressure part. The rotating part includes a retaining ring, a crossbar, and a V-groove. The retaining ring is mounted on the central part, located on the limiting boss, and the crossbar extends to the side of the retaining ring. The ring-cutting part includes a vertical rod, a sleeve, a spring, and a cutting wheel. The vertical rod is fitted onto the crossbar, and the sleeve is fitted onto the lower part of the vertical rod.

Description

Technical Field

[0001] This invention belongs to the field of transformer manufacturing technology, and in particular relates to a transformer insulating paper ring circular shearing device. Background Technology

[0002] Insulating paper rings, as end rings, play a crucial role in transformer production. They are primarily used for fixing and insulating transformer windings, preventing short-circuit faults within the transformer. The production of insulating paper rings is very conventional, and there are many production methods available on-site. This seemingly simple operation often requires simple tools but is highly dependent on the operator's experience. Therefore, the industry needs a tool suitable for this type of operation that can efficiently cut the paper rings. Summary of the Invention

[0003] This invention provides a transformer insulating paper ring circular shearing device to solve the problems mentioned in the background art.

[0004] The technical problem solved by this invention is achieved by the following technical solution:

[0005] A transformer insulating paper ring circular cutting device includes a central part, a side pressing part, a rotating part, and a ring cutting part. The side pressing part is installed on the central part, the rotating part is hinged to the top of the central part, and the ring cutting part is installed on the rotating part.

[0006] The central section includes an airbag, a lower cavity, a mounting boss, a limiting boss, a threaded hole, and a handle. The airbag is sealed and installed at the bottom of the lower cavity. The mounting boss connects to the upper part of the lower cavity, and a side pressure part is installed on the mounting boss. A limiting boss is located above the mounting boss, and a rotating part is installed on the limiting boss. The top of the airbag has a mating interface, which is bonded to the bottom of the lower cavity. The side pressure part includes a slanted pressure ring and an upper boss. The side pressure part is made of hard rubber material and has an umbrella-shaped structure. The lowest point of the slanted pressure ring is higher than the lowest point of the airbag. The top of the slanted pressure ring has an upper boss, which cooperates with the mounting boss to install the side pressure part. The rotating part includes a retaining ring, a crossbar, and a V-groove. The retaining ring is installed on the central section, located on the limiting boss, and a retaining spring is installed in the retaining spring groove for limiting. The crossbar extends to the side of the retaining ring. The circumferential cutting section includes a vertical rod, a sleeve, a spring, and a cutting wheel. The vertical rod is fitted onto the horizontal rod, and the sleeve is fitted onto the lower part of the vertical rod. A spring is installed inside the sleeve, located below the lower end of the vertical rod. Under the action of the spring, the sleeve always has a downward pressing tendency. The cutting wheel is hinged to the bottom of the sleeve. Under the action of the sleeve, the cutting wheel presses against the insulating cardboard. As the vertical rod rotates one revolution with the rotating part, the circular cutting operation of the paper ring is completed. A limiting pin is installed at the bottom of the vertical rod, which is inserted into the bottom of the vertical rod on one side and passes through the side groove of the sleeve on the other. The side wall of the sleeve has a through-groove, and the bottom of the sleeve has two ears, to which the cutting wheel is hinged.

[0007] Furthermore, the top of the central part has a threaded hole, and the bottom of the handle has a threaded rod. The threaded rod and the threaded hole cooperate to install the handle on the central part, and holding the handle makes it easy to operate the entire circular shear device.

[0008] Furthermore, the bottom of the airbag has a lower dot. During operation, a suitable coating is applied to the lower dot, and the mark left on the cardboard is the center point of the cut paper ring, which eliminates the need for subsequent paper ring alignment.

[0009] Furthermore, an air nozzle is installed on the side of the lower cavity. This nozzle connects to the interior of the lower cavity and to the airbag. The air pressure inside the airbag can be adjusted via the nozzle. When the airbag has appropriate pressure, it can easily compress the cardboard and leave a center mark on the cardboard. It should be noted that the airbag should be made of a rigid material; otherwise, when the airbag compresses the insulating cardboard, it may move laterally, resulting in inaccurate centering.

[0010] Furthermore, the mounting boss has four evenly distributed inner mounting holes on its side. The side pressure part is installed on the mounting boss through the inner mounting holes. The upper boss has outer mounting holes around its perimeter. The outer mounting holes correspond to the inner mounting holes and are installed using pins.

[0011] Furthermore, the limiting boss has a retaining ring groove above it, and a retaining ring is installed in the retaining ring groove to rotatably connect the rotating part to the limiting boss.

[0012] Furthermore, the upper surface of the crossbar has a V-shaped groove, and the top of the vertical bar has a cylinder. The cylinder is installed by connecting it to the crossbar. The top of the cylinder has a threaded boss, and a clamping screw is installed inside the threaded boss. The screw engages with the V-shaped groove to clamp the lateral position of the vertical bar, which facilitates the adjustment of the diameter of the paper cutting ring.

[0013] Furthermore, the bottom of the side groove is horizontally connected to the limiting groove. During the cutting operation, the limiting pin moves up and down in the side groove. When not cutting, the sleeve is pushed upward and rotated to allow the limiting pin to enter the limiting groove, so that the sleeve is restricted to a high position and cannot touch the cardboard. This state is usually used for center positioning before cutting.

[0014] The beneficial effects of this invention are:

[0015] This invention relates to the circular cutting operation of insulating paper rings during transformer enclosure production. It features an air bladder for center positioning and compressibility, with a center point imprinted on the bottom of the air bladder. It also has a side pressing section for spreading the paperboard surface. The rotating and cutting sections located on the side can easily complete the paper ring cutting. Furthermore, the height of the cutting wheel can be adjusted as needed, facilitating the adjustment of the appropriate cutting wheel height during positioning and subsequent cutting operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention;

[0017] Figure 2 This is the front view of the present invention;

[0018] Figure 3 This is an exploded view of the present invention;

[0019] In the diagram: 10. Center part, 11. Airbag, 111. Connecting interface, 112. Lower dot, 12. Lower cavity, 121. Air nozzle, 13. Mounting boss, 131. Inner mounting hole, 14. Limiting boss, 141. Snap ring groove, 15. Threaded hole, 16. Handle, 161. Threaded rod, 20. Side pressure part, 21. Inclined pressure ring, 22. Upper boss, 221. Outer mounting hole, 30. Rotating part, 31. Snap ring, 32. Crossbar, 33. V-groove, 40. Ring cut 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 Implementation

[0020] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0021] See Figures 1-3 The transformer insulating paper ring circular shearing device shown includes a central part 10, a side pressing part 20, a rotating part 30, and a ring cutting part 40. The side pressing part 20 is mounted on the central part 10, the rotating part 30 is hinged to the top of the central part 10, and the ring cutting part 40 is mounted on the rotating part 30.

[0022] The central part 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 upper part of the lower cavity 12. A side pressure part 20 is installed on the mounting boss 13. A limiting boss 14 is located above the mounting boss 13. A rotating part 30 is installed on the limiting boss 14. The top of the central part 10 has a threaded hole 15. The handle 16 is installed upward through the threaded hole 15. Holding the handle 16 facilitates the operation of the entire circular shear device.

[0023] The top of the airbag 11 has an interface 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 ring, which can eliminate the need for subsequent paper ring alignment.

[0024] An air nozzle 121 is installed on the side of the lower cavity 12. The air nozzle 121 connects 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. When the air bag 11 has a suitable air pressure, it can easily complete the pressing operation on the cardboard and leave a center mark on the cardboard. Of course, it should be noted that the air bag 11 should be made of rigid material. Otherwise, when the air bag 11 presses against the insulating cardboard, the air bag 11 may move laterally, resulting in inaccurate centering.

[0025] The mounting boss 13 has four evenly distributed inner mounting holes 131 on its side, through which the side pressure part 20 is mounted on the mounting boss 13.

[0026] The limiting boss 14 has a retaining ring groove 141 above it. A retaining ring is installed in the retaining ring groove 141 to rotate the rotating part 30 to the top of the limiting boss 14.

[0027] The handle 16 has a threaded rod 161 at the bottom, which engages with the threaded hole 15 to allow the handle 16 to be mounted on the center part 10.

[0028] The side pressure part 20 includes an inclined pressure ring 21 and an upper boss 22. The side pressure part 20 is made of hard rubber material and has an umbrella-shaped structure. The lowest point of the inclined pressure ring 21 is higher than the lowest point of the air bladder 11, which provides compression space for the air bladder 11. The inclined pressure ring 21 has almost no compression space. When the inclined pressure ring 21 presses the paper ring downward, it flattens and stretches the paper ring outward by relying on its small amount of elasticity and its outward tilting structure. The top of the inclined 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 its perimeter. The outer mounting hole 221 corresponds to the inner mounting hole 131 and is installed using a pin.

[0029] The rotating part 30 includes a retaining ring 31, a crossbar 32 and a V-groove 33. The retaining ring 31 is mounted on the center part 10, located on the limiting boss 14, and a retaining spring is installed in the retaining spring groove 141 for limiting. The retaining ring 31 extends the crossbar 32 to the side, and the outer surface of the upper surface of the crossbar 32 has a V-groove 33.

[0030] The ring-cutting part 40 includes a vertical rod 41, a sleeve 42, a spring 43, and a cutting wheel 44. The vertical rod 41 is fitted onto the horizontal rod 32, and the sleeve 42 is fitted onto the lower part of the vertical rod 41. The spring 43 is installed inside the sleeve 42 and is located below the lower end of the vertical rod 41. Under the action of the spring 43, the sleeve 42 always has a downward pressing tendency. The cutting wheel 44 is hinged to 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 once with the rotating part 30, the paper ring circular cutting operation is completed.

[0031] The top of the vertical rod 41 has a cylinder 411, which is connected to the horizontal rod 32. The top of the cylinder 411 has a threaded boss 412, and a clamping screw 413 is installed in the threaded boss 412. The screw 413 engages with the V-groove 33 to clamp the horizontal position of the vertical rod 41, facilitating the adjustment of the diameter of the paper cutting ring. A limiting pin 414 is installed at the bottom of the vertical rod 41. The limiting pin 414 is inserted into the bottom of the vertical rod 41 on one hand and passes through the side groove 421 of the sleeve 42 on the other hand.

[0032] The sleeve 42 has a through side groove 421 on its side wall. The bottom of the side groove 421 is laterally connected to a limiting groove 422. During the cutting operation, the limiting pin 414 moves up and down within the side groove 421. When not cutting, the sleeve 42 is pushed upward and rotated, allowing the limiting pin 414 to enter the limiting groove 422, thus restricting the sleeve 42 to a high position and preventing it from touching the cardboard. This state is typically used for center positioning before cutting. The bottom of the sleeve 42 has two ears 423, and the cutting wheel 44 is hinged to the bottom of the two ears 423.

[0033] The working principle of this invention is as follows: First, push the sleeve 42 upward to rotate the limiting pin 414 into the limiting groove 422, ensuring 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 horizontal rod 32 to the required cutting radius. This operation can be adjusted by measurement, or a scale can be left on the horizontal rod 32 in advance to indicate the cutting radius corresponding to the position of the vertical rod 41. Then, use the clamping screw 413 to lock the lateral position of the vertical rod 41. Apply a suitable coating to the lower dot 112, hold the handle 16, and press it downward on the cardboard. Although the airbag 11 is made of rigid material, it should still be pressed vertically downward during the pressing process to avoid lateral movement of the airbag 11, until the side pressure part 20 presses the cardboard and continues to press the entire device. Then rotate the push-up and rotate the sleeve 42 to push the limiting 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. Rotate the crossbar 32 one revolution to complete the cardboard circular cutting operation. If necessary, rotate it several more times until the circular cutting operation is completed.

[0034] The above embodiments mainly illustrate the transformer insulating paper ring circular shearing device of the present invention. Although only a limited number of embodiments and technical features have been described, those skilled in the art should understand that the present invention can be implemented in many other forms without departing from its spirit and scope. Therefore, the illustrated embodiments are to be regarded as illustrative and not limiting, and the present invention may cover various modifications and substitutions without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A transformer insulating paper ring circular cutting device, comprising a central part (10), a side pressing part (20), a rotating part (30), and a ring cutting part (40), characterized in that, The side pressure part (20) is mounted on the central part (10), the rotating part (30) is hinged to the top of the central part (10), and the circumferential part (40) is mounted on the rotating part (30). The central part (10) includes an airbag (11), a lower cavity (12), a mounting boss (13), and a limiting boss (14). The airbag (11) is sealed and mounted at the bottom of the lower cavity (12). The mounting boss (13) is connected above the lower cavity (12), and the side pressure part (20) is mounted on the mounting boss (13). The mounting boss (13) has a limiting boss (14) above it, and a rotating part (30) is mounted on the limiting boss (14). The airbag (11) has a mating interface (111) at the top, which is bonded to the bottom of the lower cavity (12). The side pressure part (20) includes an inclined pressure ring (21) and an upper boss (22). The side pressure part (20) is made of hard rubber material and has an umbrella-shaped structure. The inclined pressure ring (21) has an upper boss (22) at the top, and the upper boss (22) is connected to the mounting boss (13). 3) To facilitate the installation of the side-pressure part (20), the rotating part (30) includes a retaining ring (31), a crossbar (32), and a V-groove (33). The retaining ring (31) is installed on the center part (10) and located on the limiting boss (14). The crossbar (32) extends laterally from the retaining ring (31). The circumferential cutting part (40) includes a vertical rod (41), a sleeve (42), a spring (43), and a cutting wheel (44). The vertical rod (41) is fitted onto the crossbar (32), and the sleeve (42) is fitted onto the crossbar (32). A spring (43) is installed inside the sleeve (42) at the lower part of the vertical rod (41). The spring (43) is located below the lower end of the vertical rod (41). A cutting wheel (44) is hinged to the bottom of the sleeve (42). A limiting pin (414) is installed at the bottom of the vertical rod (41) and passes through the side groove (421) of the sleeve (42). The side wall of the sleeve (42) has a through side groove (421) and the bottom of the sleeve (42) has double ears (423). The cutting wheel (44) is hinged to the bottom of the double ears (423).

2. The transformer insulating paper ring circular shearing device as described in claim 1, characterized in that, The top of the central part (10) has a threaded hole (15), and the handle (16) is installed upward through the threaded hole (15). The bottom of the handle (16) has 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 insulating paper ring circular shearing device as described in claim 1, characterized in that, The airbag (11) has a lower dot (112) at its bottom.

4. The transformer insulating paper ring circular shearing device as described in claim 1, characterized in that, An air nozzle (121) is installed on the side of the lower cavity (12). The air nozzle (121) is connected to the inside of the lower cavity (12) and to the airbag (11). The air pressure inside the airbag (11) can be adjusted through the air nozzle (121).

5. The transformer insulating paper ring circular shearing device as described in claim 1, characterized in that, The mounting boss (13) has four evenly distributed inner mounting holes (131) on its side, and the upper boss (22) has outer mounting holes (221) around its perimeter. The outer mounting holes (221) correspond to the inner mounting holes (131) and are installed using pins.

6. The transformer insulating paper ring circular shearing device as described in claim 1, characterized in that, The limiting boss (14) has a retaining ring groove (141) above it. A retaining ring is installed in the retaining ring groove (141) to rotate the rotating part (30) above the limiting boss (14).

7. The transformer insulating paper ring circular shearing device as described in claim 1, characterized in that, The upper surface of the crossbar (32) has a V-groove (33), and the top of the vertical bar (41) has a cylinder (411). The cylinder (411) is installed in conjunction with the crossbar (32). The top of the cylinder (411) has a threaded boss (412). A clamping screw (413) is installed inside the threaded boss (412). The screw (413) engages with the V-groove (33) to clamp the vertical bar (41) in the lateral position.

8. The transformer insulating paper ring circular shearing device as described in claim 1, characterized in that, The bottom of the side groove (421) is horizontally connected to the limiting groove (422). Pushing the sleeve (42) upward and rotating it allows the limiting pin (414) to enter the limiting groove (422), thus limiting the sleeve (42) to a high position.

Images