Fluororubber sealing ring cutting device with adjustable length

Abstract

The utility model relates to the technical field of cutting devices, in particular to a length-adjustable fluororubber sealing ring cutting device which comprises a bottom frame, a cutting table fixed on the bottom frame, a machine frame arranged on the bottom frame, a first support fixed on the machine frame, an air cylinder fixed on the first support, and a piston rod installed at the output end of the air cylinder. An annular cutting knife used for cutting the fluororubber sealing ring is fixed to the bottom end of the piston rod, and the rack can be horizontally moved and adjusted on the bottom frame through a moving adjusting mechanism arranged on the bottom frame. A second support is fixed to the machine frame, a barrel is rotationally arranged on the second support, a plurality of clamping grooves are formed in the periphery of the barrel, and a C-shaped plate is movably connected in the clamping grooves in a clamped mode. When the fluororubber sealing ring is cut, the fluororubber sealing ring can be effectively fixed, so that the flatness of the cut face is higher, and the cutting precision is improved; in addition, the cutting length of the fluororubber sealing ring can be conveniently adjusted, the alignment of the cutting point of the sealing ring is more accurate, and the defective rate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting devices, in particular to a cutting device for fluororubber sealing rings with adjustable length. Background Technique

[0002] During the peak period of transformer overhaul, the annual overhaul volume is too large. According to the transformer overhaul regulations, the relative air humidity shall not exceed 65%. The entire time from draining oil to starting to fill oil for the hood lifting shall not exceed 12 hours. If the transformer overhaul time is too long, since the insulating material of the coil has strong moisture absorption and absorbs a large amount of moisture in the air, the insulation performance will be reduced. Therefore, the production time of the sealing ring should be strictly controlled. Since a large number of sealing rings need to be replaced on site during the overhaul period, it is difficult to meet the overhaul regulations. In addition, the existing sealing ring production process has high operation intensity and low precision. For the current market-formed cutting machine products, such as water cutting machines, laser cutting machines, stamping cutting machines, etc., the comprehensive cost performance is not high; these processing devices are either costly, inconvenient to carry, or have high requirements for the external environment; so they have not been widely adopted.

[0003] In the traditional manual bevel cutting and butt joint production process of transformer sealing rings, the flatness of the cutting surface and the cutting point have extremely high requirements. For senior skilled employees in the main transformer overhaul specialty using manual traditional processes, the qualified rate can only reach 60% and the average time used is 5 minutes. For example, if the cutting point of the sealing ring is not accurately aligned during cutting, it will lead to low cutting accuracy of the cutting surface and lack of effective fixation during cutting, and it is easy to occur warping, resulting in insufficient flatness of the cutting surface and an increase in the defective rate.

[0004] Based on this, we propose a cutting device for fluororubber sealing rings with adjustable length to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cutting device for fluororubber sealing rings with adjustable length to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A cutting device for fluororubber sealing rings with adjustable length, including a chassis. A cutting table is fixed on the chassis. A frame is arranged on the chassis. A first bracket is fixed on the frame. A cylinder is fixed on the first bracket. A piston rod is installed at the output end of the cylinder. A circular cutting knife for cutting the fluororubber sealing ring is fixed at the bottom end of the piston rod. The frame can be horizontally moved and adjusted on the chassis through a moving and adjusting mechanism arranged on the chassis;

[0008] A second bracket is fixed on the frame. A cylinder is rotatably arranged on the second bracket. A plurality of clamping grooves are formed on the outer periphery of the cylinder. A U-shaped plate is movably clamped in the clamping groove. The U-shaped plate is buckled on the second bracket. A spring is fixedly arranged between the U-shaped plate and the clamping groove. A pressing ring for pressing and fixing the fluororubber sealing ring is fixed below the U-shaped plate through a connecting rod. A plurality of protrusions are fixed on the second bracket. The inner top wall of the U-shaped plate is movably embedded and clamped with a second ball that is in rolling connection with the upper surfaces of the second bracket and the protrusions;

[0009] The cylinder is connected with the piston rod through a linkage structure. During the downward movement of the piston rod, the cylinder will be driven to rotate clockwise. During the upward movement of the piston rod, the cylinder will be driven to rotate counterclockwise.

[0010] An adjustable-length fluororubber sealing ring cutting device as described above: The moving and adjusting mechanism includes a lead screw rotatably arranged on the chassis. A limiting groove body is formed on the chassis. An adjusting block is movably clamped in the limiting groove body. The adjusting block is in threaded connection with the lead screw. The frame is fixed on the adjusting block.

[0011] An adjustable-length fluororubber sealing ring cutting device as described above: The lead screw is driven to rotate by a motor fixedly arranged on the chassis. The output end of the motor is fixedly connected with the lead screw through a coupling.

[0012] An adjustable-length fluororubber sealing ring cutting device as described above: Limiting rods are respectively fixed on the top of the U-shaped plate and the inner top wall of the clamping groove. Both ends of the spring are respectively sleeved on the limiting rods.

[0013] An adjustable-length fluororubber sealing ring cutting device as described above: A plurality of the clamping grooves are circumferentially distributed on the cylinder at equal angles. The protrusions and the clamping grooves exist in pairs. The corners of the protrusions are all processed with smooth transitions.

[0014] An adjustable-length fluororubber sealing ring cutting device as described above: The linkage structure includes a track groove formed on the outer wall of the piston rod and a first ball embedded and clamped on the inner wall of the cylinder. The first ball is embedded and clamped in the track groove and can roll along the track where the track groove is located. The track groove is composed of a continuous track that is spiral at the bottom and vertical strip-shaped at the top.

[0015] An adjustable-length fluororubber sealing ring cutting device as described above: The size of the pressing ring is adapted to the size of the annular cutting knife. The pressing ring is located on the outer peripheral side of the annular cutting knife.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: The starting cylinder can drive the piston rod to extend and retract, thereby driving the annular cutting knife to rise and fall. Furthermore, the annular cutting knife moves down to the cutting table to cut the original fluororubber sealing ring placed on the cutting table. The cylinder body and the piston rod are connected through a linkage structure. During the downward movement of the piston rod, the cylinder body will be driven to rotate clockwise, and during the upward movement of the piston rod, the cylinder body will be driven to rotate counterclockwise. Therefore, when the piston rod moves downward, it will first drive the cylinder body to rotate clockwise, thereby driving the U-shaped plate to rotate, and cooperate with the elastic expansion and contraction of the spring to press the U-shaped plate, so that the U-shaped plate moves from the convex surface to the surface of the second bracket, thereby driving the pressing ring to move down to the cutting table to press and fix the original fluororubber sealing ring placed on the cutting table. The piston rod continues to move downward to drive the annular cutting knife to cut the original fluororubber sealing ring. At the same time, after the cutting is completed, the cylinder drives the piston rod to move upward. During the upward movement of the piston rod, the cylinder body will be driven to rotate counterclockwise, thereby driving the U-shaped plate to rotate to the convex surface, thereby driving the pressing ring to move upward, so that the pressing ring releases the pressing and fixing of the fluororubber sealing ring placed on the cutting table, thereby facilitating the removal of the cut fluororubber sealing ring. At the same time, the moving and adjusting mechanism can be used to adjust the position of the frame, and further adjust the horizontal position of the annular cutting knife to adjust the cutting length of the original fluororubber sealing ring.

[0017] Furthermore, when the utility model cuts the fluororubber sealing ring, it can effectively fix it to prevent warping during cutting, so that the cutting surface is flatter, improve the cutting accuracy. After cutting, it is convenient to quickly remove the fluororubber sealing ring, and the cutting is convenient. In addition, the position of the annular cutting knife can be flexibly adjusted, which is convenient to adjust the cutting length of the fluororubber sealing ring, make the cutting point of the sealing ring more accurately aligned, and reduce the defective rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the first perspective of a cutting device for fluororubber sealing rings with adjustable length.

[0019] Figure 2 It is a schematic diagram of the overall structure of the second perspective of a cutting device for fluororubber sealing rings with adjustable length.

[0020] Figure 3 It is a schematic diagram of the structure of the moving and adjusting mechanism of a cutting device for fluororubber sealing rings with adjustable length.

[0021] Figure 4 It is a schematic diagram of the structure after removing the chassis and the moving and adjusting mechanism of a cutting device for fluororubber sealing rings with adjustable length.

[0022] Figure 5 It is a schematic diagram of the first perspective explosion structure after removing the chassis and the moving and adjusting mechanism of a cutting device for fluororubber sealing rings with adjustable length.

[0023] Figure 6 It is a second - perspective exploded structural schematic diagram after removing the chassis and the moving adjustment mechanism of a cutting device for a fluororubber sealing ring with adjustable length;

[0024] Figure 7 It is a partial structural schematic diagram of a cutting device for a fluororubber sealing ring with adjustable length.

[0025] In the figure: 1. Chassis; 2. Cutting table; 3. Frame; 4. Motor; 5. Lead screw; 6. Limit groove body; 7. Adjusting block; 8. First bracket; 9. Second bracket; 10. Cylinder; 11. Piston rod; 12. Ring - shaped cutting knife; 13. Track groove; 14. Cylinder body; 15. First ball; 16. Card slot; 17. C - shaped plate; 18. Spring; 19. Limit rod; 20. Pressing ring; 21. Protrusion; 22. Second ball. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0027] Please refer to Figures 1 to 7 , as an embodiment of the present invention, a cutting device for a fluororubber sealing ring with adjustable length includes a chassis 1. A cutting table 2 is fixed on the chassis 1. A frame 3 is arranged on the chassis 1. A first bracket 8 is fixed on the frame 3. A cylinder 10 is fixed on the first bracket 8. A piston rod 11 is installed at the output end of the cylinder 10. A ring - shaped cutting knife 12 for cutting the fluororubber sealing ring is fixed at the bottom end of the piston rod 11. The frame 3 can be horizontally moved and adjusted on the chassis 1 through a moving adjustment mechanism arranged on the chassis 1;

[0028] A second bracket 9 is fixed on the frame 3. A cylinder body 14 is rotatably arranged on the second bracket 9. A plurality of card slots 16 are formed on the outer circumference of the cylinder body 14. A C - shaped plate 17 is movably clamped in the card slots 16. The C - shaped plate 17 is buckled on the second bracket 9. A spring 18 is fixedly arranged between the C - shaped plate 17 and the card slots 16. A pressing ring 20 for pressing and fixing the fluororubber sealing ring is fixed below the C - shaped plate 17 through a connecting rod. A plurality of protrusions 21 are fixed on the second bracket 9. The inner top wall of the C - shaped plate 17 is movably embedded and clamped with a second ball 22 that is in rolling connection with the upper surfaces of the second bracket 9 and the protrusions 21;

[0029] The cylinder body 14 and the piston rod 11 are connected through a linkage structure. During the downward movement of the piston rod 11, the cylinder body 14 will be driven to rotate clockwise, and during the upward movement of the piston rod 11, the cylinder body 14 will be driven to rotate counterclockwise.

[0030] In this embodiment, the starting cylinder 10 can drive the piston rod 11 to expand and contract, thereby driving the annular cutting knife 12 to move up and down. Then, the annular cutting knife 12 moves down to the cutting table 2 to cut the original fluororubber sealing ring placed on the cutting table 2. The cylinder body 14 and the piston rod 11 are connected by a linkage structure. During the downward movement of the piston rod 11, the cylinder body 14 will be driven to rotate clockwise, and during the upward movement of the piston rod 11, the cylinder body 14 will be driven to rotate counterclockwise. Therefore, when the piston rod 11 moves downward, it will first drive the cylinder body 14 to rotate clockwise, thereby driving the U-shaped plate 17 to rotate, and cooperate with the elastic expansion and contraction of the spring 18 to press the U-shaped plate 17, so that the U-shaped plate 17 moves from the surface of the protrusion 21 to the surface of the second bracket 9, thereby driving the pressing ring 20 to move down to the cutting table 2 to press and fix the original fluororubber sealing ring placed on the cutting table 2. The piston rod 11 continues to move downward to drive the annular cutting knife 12 to cut the original fluororubber sealing ring. At the same time, after the cutting is completed, the cylinder 10 drives the piston rod 11 to move upward. During the upward movement of the piston rod 11, the cylinder body 14 will be driven to rotate counterclockwise, thereby driving the U-shaped plate 17 to rotate to the surface of the protrusion 21, thereby driving the pressing ring 20 to move upward, so that the pressing ring 20 releases the pressing and fixing of the fluororubber sealing ring placed on the cutting table 2, which is convenient for taking out the cut fluororubber sealing ring. At the same time, the moving and adjusting mechanism can adjust the position of the frame 3, and further can adjust the horizontal position of the annular cutting knife 12 to adjust the cutting length of the original fluororubber sealing ring.

[0031] As a further solution of the present invention, the moving and adjusting mechanism includes a lead screw 5 rotatably arranged on the chassis 1. A limit groove body 6 is opened on the chassis 1. An adjusting block 7 is movably clamped in the limit groove body 6. The adjusting block 7 is threadedly connected with the lead screw 5. The frame 3 is fixed on the adjusting block 7.

[0032] In this embodiment, when the lead screw 5 rotates, the adjusting block 7 will be driven to horizontally move inside the limit groove body 6 by the threaded connection between the adjusting block 7 and the lead screw 5, so that the frame 3 on the adjusting block 7 will be synchronously driven to move horizontally.

[0033] As a further solution of the present invention, the lead screw 5 is driven to rotate by a motor 4 fixedly arranged on the chassis 1. The output end of the motor 4 is fixedly connected with the lead screw 5 through a coupling.

[0034] In this embodiment, starting the motor 4 can drive the lead screw 5 to rotate automatically.

[0035] As a further solution of the present invention, limiting rods 19 are respectively fixed on the top of the U-shaped plate 17 and the inner top wall of the card slot 16. Both ends of the spring 18 are respectively sleeved on the limiting rods 19.

[0036] In this embodiment, the elastic force of the spring 18 can be used to press the C-shaped plate 17 tightly against the surfaces of the second bracket 9 and the protrusion 21. The limiting rod 19 is used to limit the spring 18 to prevent its position from shifting during expansion and contraction.

[0037] As a further solution of the present utility model, a plurality of card slots 16 are circumferentially distributed on the cylinder body 14 at equal angles. The protrusions 21 and the card slots 16 exist in pairs, and the corners of the protrusions 21 are all subjected to smooth transition treatment.

[0038] In this embodiment, when the C-shaped plate 17 rotates onto the protrusion 21, it will drive the C-shaped plate 17 to lift upward, thereby driving the pressing ring 20 to lift upward. The smooth transition treatment facilitates the smooth transition of the C-shaped plate 17 when passing through the protrusion 21.

[0039] As a further solution of the present utility model, the linkage structure includes a track groove 13 opened on the outer wall of the piston rod 11 and a first ball 15 embedded and clamped on the inner wall of the cylinder body 14. The first ball 15 is embedded and clamped in the track groove 13 and can roll along the track where the track groove 13 is located. The track groove 13 is composed of a continuous track that is spiral at the bottom and vertical strip-shaped at the top.

[0040] In this embodiment, when the piston rod 11 moves downward, it will drive the first ball 15 to roll in the spiral track where the track groove 13 is located, thereby driving the cylinder body 14 to rotate clockwise. After that, when the piston rod 11 continues to move downward, it will drive the first ball 15 to roll in the vertical strip-shaped track where the track groove 13 is located, and the cylinder body 14 will not rotate during the continuous downward movement. On the contrary, when the piston rod 11 moves upward, it will first drive the first ball 15 to roll in the spiral track where the track groove 13 is located, thereby driving the cylinder body 14 to rotate counterclockwise. After that, when the piston rod 11 continues to move upward, it will drive the first ball 15 to roll in the vertical strip-shaped track where the track groove 13 is located, and the cylinder body 14 will not rotate during the continuous upward movement.

[0041] As a further solution of the present utility model, the size of the pressing ring 20 is adapted to the size of the annular cutting knife 12, and the pressing ring 20 is located on the outer peripheral side of the annular cutting knife 12.

[0042] In this embodiment, when using the annular cutting knife 12 to cut the fluororubber sealing ring placed on the cutting table 2, the pressing ring 20 is used to press and fix the original fluororubber sealing ring sheet placed on the cutting table 2, which is convenient for fixing the original fluororubber sealing ring sheet on the periphery of the cutting point, making it more flat during cutting and avoiding warping.

[0043] The working principle of this utility model is as follows: The original fluororubber sealing ring piece is first placed on the upper surface of the cutting table 2. Starting the air cylinder 10 can drive the piston rod 11 to expand and contract, thereby driving the annular cutting knife 12 to move up and down. Then, the annular cutting knife 12 moves down to the cutting table 2 to cut the original fluororubber sealing ring piece placed on the cutting table 2. The cylinder body 14 and the piston rod 11 are connected in cooperation through a linkage structure. When the piston rod 11 moves down, it will drive the first ball 15 to roll in the spiral track where the track groove 13 is located, thereby driving the cylinder body 14 to rotate clockwise. Then, when the piston rod 11 continues to move down, it will drive the first ball 15 to roll in the vertical strip-shaped track where the track groove 13 is located. During the continued downward movement, the cylinder body 14 does not rotate. On the contrary, when the piston rod 11 moves up, it will first drive the first ball 15 to roll in the spiral track where the track groove 13 is located, thereby driving the cylinder body 14 to rotate counterclockwise. Then, when the piston rod 11 continues to move up, it will drive the first ball 15 to roll in the vertical strip-shaped track where the track groove 13 is located. During the continued upward movement, the cylinder body 14 does not rotate. Thus, during the downward movement of the piston rod 11, the cylinder body 14 will be driven to rotate clockwise, and during the upward movement of the piston rod 11, the cylinder body 14 will be driven to rotate counterclockwise. Therefore, when the piston rod 11 moves down, it will first drive the cylinder body 14 to rotate clockwise, thereby driving the U-shaped plate 17 to rotate, and cooperate with the elastic expansion and contraction of the spring 18 to press the U-shaped plate 17, so that the U-shaped plate 17 moves from the surface of the protrusion 21 to the surface of the second bracket 9, thereby driving the pressing ring 20 to move down to the cutting table 2 to press and fix the original fluororubber sealing ring piece placed on the cutting table 2. When the piston rod 11 continues to move down, it drives the annular cutting knife 12 to cut the original fluororubber sealing ring piece. At the same time, after the cutting is completed, the air cylinder 10 drives the piston rod 11 to move up. During the upward movement of the piston rod 11, it will drive the cylinder body 14 to rotate counterclockwise, thereby driving the U-shaped plate 17 to rotate to the surface of the protrusion 21, thereby driving the pressing ring 20 to move up, so that the pressing ring 20 releases the pressing and fixing of the fluororubber sealing ring placed on the cutting table 2, thus facilitating the removal of the cut fluororubber sealing ring. At the same time, using the moving and adjusting mechanism, the lead screw 5 rotates. The adjusting block 7 is threadedly connected to the lead screw 5, which will drive the adjusting block 7 to move horizontally inside the limiting groove body 6, thereby synchronously driving the upper frame 3 of the adjusting block 7 to move horizontally, enabling the position of the frame 3 to be adjusted, and further enabling the horizontal position of the annular cutting knife 12 to be adjusted, and the cutting length of the original fluororubber sealing ring piece to be adjusted.

[0044] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, all technical solutions that can implement this utility model in other specific forms are included in this utility model.

Claims

1. An adjustable-length cutting device for fluororubber sealing rings, comprising a chassis (1), a cutting table (2) is fixed on the chassis (1), a frame (3) is arranged on the chassis (1), a first support (8) is fixed on the frame (3), a cylinder (10) is fixed on the first support (8), a piston rod (11) is installed at the output end of the cylinder (10), and an annular cutting knife (12) for cutting the fluororubber sealing ring is fixed at the bottom end of the piston rod (11), characterized in that, The frame (3) can be horizontally moved and adjusted on the chassis (1) through a moving and adjusting mechanism provided on the chassis (1). A second bracket (9) is fixed on the frame (3). A cylinder (14) is rotatably arranged on the second bracket (9). A plurality of clamping grooves (16) are formed on the outer circumference of the cylinder (14). A U-shaped plate (17) is movably clamped in the clamping groove (16). The U-shaped plate (17) is buckled on the second bracket (9). A spring (18) is fixedly arranged between the U-shaped plate (17) and the clamping groove (16). A pressing ring (20) for pressing and fixing the fluororubber sealing ring is fixed below the U-shaped plate (17) through a connecting rod. A plurality of protrusions (21) are fixed on the second bracket (9). The inner top wall of the U-shaped plate (17) is movably inserted and clamped with a second ball (22) that is in rolling connection with the upper surfaces of the second bracket (9) and the protrusion (21). The cylinder (14) and the piston rod (11) are connected in cooperation through a linkage structure. During the downward movement of the piston rod (11), the cylinder (14) will be driven to rotate clockwise. During the upward movement of the piston rod (11), the cylinder (14) will be driven to rotate counterclockwise.

2. An adjustable-length fluororubber sealing ring cutting device according to claim 1, characterized in that, The moving and adjusting mechanism includes a lead screw (5) rotatably arranged on the chassis (1). A limiting groove body (6) is formed on the chassis (1). An adjusting block (7) is movably clamped in the limiting groove body (6). The adjusting block (7) is in threaded connection with the lead screw (5). The frame (3) is fixed on the adjusting block (7).

3. An adjustable-length fluororubber sealing ring cutting device according to claim 2, characterized in that, The lead screw (5) is driven to rotate by a motor (4) fixedly arranged on the chassis (1). The output end of the motor (4) is fixedly connected with the lead screw (5) through a coupling.

4. An adjustable-length fluororubber sealing ring cutting device according to claim 1, characterized in that Limiting rods (19) are respectively fixed on the top of the U-shaped plate (17) and the inner top wall of the clamping groove (16). The two ends of the spring (18) are respectively sleeved on the limiting rods (19).

5. An adjustable-length fluororubber sealing ring cutting device according to claim 1, characterized in that, The plurality of clamping grooves (16) are circumferentially distributed on the cylinder (14) at equal angles. The protrusions (21) and the clamping grooves (16) exist in pairs. The corners of the protrusions (21) are all processed with smooth transitions.

6. An adjustable-length fluororubber sealing ring cutting device according to claim 1, characterized in that, The linkage structure includes a track groove (13) formed on the outer wall of the piston rod (11) and a first ball (15) inserted and clamped in the inner wall of the cylinder (14). The first ball (15) is inserted and clamped in the track groove (13) and can roll along the track where the track groove (13) is located. The track groove (13) is composed of a continuous track that is spiral at the bottom and vertical strip-shaped at the top.

7. An adjustable-length fluororubber sealing ring cutting device according to claim 1, characterized in that, The size of the pressing ring (20) is adapted to the size of the annular cutting tool (12). The pressing ring (20) is located on the outer peripheral side of the annular cutting tool (12).

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