Metallized film capacitor multi-layer composite film synchronous slitting device and slitting method

Abstract

The invention discloses a metallized film capacitor multi-layer composite film synchronous slitting device and method. The device comprises a fixing frame; the lifting assembly comprises an electric push rod mounted at the top of the inner wall of the fixing frame and a mounting frame arranged at the bottom of the electric push rod; the slitting assembly comprises a rotating pipe rotationally inserted into the mounting frame, a plurality of sets of slitting cutter heads fixedly connected to the surface of the rotating pipe in a sleeving mode and cooling cavities formed in the slitting cutter heads, the slitting cutter heads are cooled through cold air, deformation or abrasion aggravation of the slitting cutter heads due to high temperature is prevented, it is guaranteed that the cutting end of a composite film is smooth and flat, and the cutting efficiency of the composite film is improved. The slitting quality is improved, the cold air after the cutter head is cooled drives the grinding assembly to grind the slitting cutter head, the sharpness and the cutting effect of the cutter head are guaranteed, normal work of the device is maintained, the slitting, cooling and grinding processes are mutually associated and synchronously carried out, time waste caused by shutdown maintenance is avoided, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitor processing, and in particular to a synchronous slitting device and a slitting method for a multilayer composite film of a metallized film capacitor. Background Art

[0002] A film capacitor refers to a capacitor that uses metal foil as an electrode and plastic film and then overlaps and winds them together, using a metalized thin plastic film as a dielectric. During the actual production and processing of the metalized film, the metalized film needs to be cut. In the existing cutting process, due to the inevitable friction between the film and the blade, the friction generated by the existing blade when cutting the film is large, which in turn generates high temperature, making the cut part of the film prone to protrusions or burrs, thereby affecting the cutting quality. Therefore, a synchronous cutting device and cutting method for multi-layer composite films of metalized film capacitors are proposed to solve this problem. Summary of the Invention

[0003] The present invention aims to solve the problems existing in the prior art and provides the following technical solutions:

[0004] The synchronous slitting device for multi-layer composite films of metallized film capacitors includes:

[0005] Fixed frame;

[0006] A lifting assembly comprising an electric push rod mounted on the top of the inner wall of the fixing frame and a mounting frame provided at the bottom of the electric push rod;

[0007] The slitting assembly includes a rotating tube rotatably inserted into the mounting frame, a multi-component cutting disc fixedly sleeved on the surface of the rotating tube, and a cooling chamber opened in the slitting disc, a surface of the rotating tube and integrally formed in the cooling chamber with a plurality of sets of unidirectional flow connecting tubes 1, a circumferential surface of the connecting tube is provided with a plurality of communicating holes, an elastic sealing member for sealing the communicating holes is installed in the connecting tube 1, an air inlet pipe is rotatably inserted into one end of the rotating tube, a delivery pipe is fixedly inserted into the rotating tube, and a plurality of sets of connecting tubes 2 are provided to communicate between the delivery pipe and the cooling chamber;

[0008] A driving assembly includes a fixed tube fixedly inserted into the mounting frame and a moving member provided at the bottom of the fixed tube, wherein the air outlet end of the delivery tube is connected to the fixed tube via a conduit;

[0009] A grinding assembly is fixedly arranged at the bottom of the moving part and located above the slitting assembly;

[0010] Among them, the cold air is transported to the rotating tube through the air inlet pipe, and the external force drives the rotating tube to rotate. Under the action of the centrifuge, the elastic seal moves, the connecting hole opens, and the cold air enters the cooling cavity, and then is transported to the delivery pipe by the connecting pipe 2, and finally enters the fixed pipe, driving the movable part to move downward, and controlling the grinding assembly to grind the slitting disc.

[0011] As an improvement of the above technical solution, the elastic sealing member includes a sealing disk movably arranged in the connecting pipe 1 and a spring 2 arranged between the sealing disk and the inner wall of the connecting pipe 1.

[0012] As an improvement of the above technical solution, the drive assembly also includes an outer sleeve fixedly sleeved on the surface of the fixed tube and a through hole opened on the surface of the fixed tube for connecting the outer sleeve and the fixed tube, and the side wall of the outer sleeve is connected with an air outlet pipe.

[0013] As an improvement of the above technical solution, the movable part includes a sealing plug movably arranged in the fixed tube and adapted to the through hole, and a movable rod fixedly arranged at the bottom of the sealing plug, the bottom of the movable rod passes through the fixed tube and extends to the outside of the fixed tube, the end of the movable rod extending to the outside of the fixed tube is fixedly arranged with the grinding assembly, and the surface of the movable rod and a section located inside the fixed tube are wound with a spring.

[0014] As an improvement of the above technical solution, the grinding assembly includes a mounting plate fixedly arranged at the bottom of the movable rod and a grinding head fixedly arranged at the bottom of the mounting plate and corresponding to the number and position of the slitting discs.

[0015] As an improvement of the above technical solution, it also includes a motor installed on the top of the mounting frame and a transmission belt arranged between the output end of the motor and the rotating tube.

[0016] As an improvement to the above technical solution, multiple groups of connecting pipes 1 and multiple groups of connecting pipes 2 are alternately distributed in the cooling chamber, and a pressure valve is installed in the connecting pipe 2.

[0017] A slitting method of a metallized film capacitor multilayer composite film synchronous slitting device, using the metallized film capacitor multilayer composite film synchronous slitting device described above, comprises the following steps:

[0018] S1: Place the composite film on the table below the slitting assembly;

[0019] S2 Cooling the Slitting Cutter Disc: When slitting is required, cold air is delivered to the rotating tube through the air inlet pipe. At the same time, the rotating tube is driven by external force to rotate. The centrifugal force generated by the rotation moves the elastic seal in the connecting tube 1, opening the connecting hole, allowing cold air to enter the cooling chamber of the slitting cutter disc from the rotating tube through the connecting hole to cool the slitting cutter disc;

[0020] S3 performs slitting operation: when the slitting blade is in a cooling state, the electric push rod drives the mounting frame to move downward to cut the composite film.

[0021] S4 Grinding the slitting disc: The cold air in the cooling chamber is transported to the delivery pipe through the connecting pipe 2, and then enters the fixed pipe. When the air pressure in the fixed pipe accumulates to drive the moving part to move downward, the moving part drives the grinding assembly to move downward to grind the slitting disc.

[0022] Beneficial effects of the present invention:

[0023] The slitting disc is cooled by cold air to prevent deformation or increased wear due to high temperature, ensure that the cut end of the composite film is smooth and flat, and improve the slitting quality. The cold air behind the cooled disc drives the grinding assembly to grind the slitting disc to ensure the sharpness and cutting effect of the disc and maintain the normal operation of the device. The slitting, cooling and grinding processes are interrelated and carried out synchronously to avoid time waste caused by downtime for maintenance and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the present invention in working state;

[0026] Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0027] Figure 4 This is a schematic diagram of the structure of the drive assembly of the present invention;

[0028] Figure 5 This is a schematic diagram of the distribution structure of connecting pipe 1 and connecting pipe 2 of the present invention.

[0029] Figure numerals: 10, fixed frame; 20, electric push rod; 21, mounting frame; 30, driving assembly; 31, fixed tube; 32, outer sleeve; 33, through hole; 34, movable rod; 35, sealing plug; 36, spring 1; 37, air outlet pipe; 40, rotating tube; 401, connecting tube 1; 402, connecting hole; 403, sealing disk; 404, spring 2; 41, air inlet pipe; 42, delivery pipe; 43, slitting disc; 431, cooling chamber; 44, connecting tube 2; 50, mounting plate; 51, grinding head. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] Example 1

[0032] The synchronous slitting device for multi-layer composite films of metallized film capacitors includes:

[0033] Fixed frame 10;

[0034] The lifting assembly includes an electric push rod 20 mounted on the top of the inner wall of the fixing frame 10 and a mounting frame 21 provided at the bottom of the electric push rod 20;

[0035] The slitting assembly includes a rotating tube 40 rotatably inserted into the mounting frame 21, a multi-component cutting disc 43 fixedly sleeved on the surface of the rotating tube 40, and a cooling chamber 431 provided in the slitting disc 43. The surface of the rotating tube 40 and the cooling chamber 431 are integrally formed with a plurality of connecting tubes 401 for unidirectional flow. The circumferential surface of the connecting tube 401 is provided with a plurality of communicating holes 402. An elastic sealing member for sealing the communicating holes 402 is installed in the connecting tube 401. An air inlet pipe 41 is rotatably inserted into one end of the rotating tube 40, and a delivery pipe 42 is fixedly inserted into the other end of the rotating tube 40. A plurality of connecting tubes 44 are provided for communication between the delivery pipe 42 and the cooling chamber 431.

[0036] The driving assembly 30 includes a fixed tube 31 fixedly inserted into the mounting frame 21 and a moving member provided at the bottom of the fixed tube 31. The air outlet end of the delivery tube 42 is connected to the interior of the fixed tube 31 via a conduit.

[0037] A grinding assembly is fixedly arranged at the bottom of the moving part and located above the slitting assembly;

[0038] Among them, the cold air is transported to the rotating tube 40 through the air inlet pipe 41, and the external force drives the rotating tube 40 to rotate. Under the action of the centrifuge, the elastic seal moves, the connecting hole 402 opens, and the cold air enters the cooling chamber 431, and then is transported to the delivery pipe 42 by the connecting pipe 2 44, and finally enters the fixed tube 31, driving the movable part to move downward, and controlling the grinding assembly to grind the slitting disc 43.

[0039] Specifically, the composite film is placed on the table below the slitting assembly. When slitting is required, cold air is transported to the rotating tube 40 through the air inlet pipe 41. At the same time, an external force drives the rotating tube 40 to rotate. Due to the centrifugal force generated by the rotation, the elastic seal installed in the connecting tube 1 401 moves, and the connecting hole 402 originally sealed by the elastic seal is opened. At this time, the cold air can enter the cooling chamber 431 of the slitting disc 43 from the rotating tube 40 through the connecting hole 402, cooling the slitting disc 43. Continuous cooling can prevent the slitting disc 43 from being deformed or aggravated by the high temperature generated by friction, so that the composite film can be effectively cut and the cut end of the composite film is effectively guaranteed to be smooth and flat, thereby improving the quality of composite film slitting.

[0040] The cold air entering the cooling chamber 431 flows into the delivery pipe 42 through the connecting pipe 2 44, and then the cold air enters the fixed pipe 31 from the delivery pipe 42. After the cold air enters the fixed pipe 31, when the air pressure in the fixed pipe 31 accumulates to drive the moving part in the fixed pipe 31 to move downward, the moving part drives the grinding assembly to move downward, and then controls the grinding assembly to grind the slitting disc 43 to ensure the sharpness and cutting effect of the slitting disc 43 and maintain the normal working state of the device. Finally, the electric push rod 20 is started, and the electric push rod 20 pushes the mounting frame 21 down, so that the slitting disc 43 approaches the composite film and performs the slitting operation;

[0041] The slitting, cooling and grinding processes are interrelated and carried out synchronously, making the workflow of the entire slitting device more compact and efficient. Cooling and grinding are carried out while slitting, avoiding the time waste caused by stopping for maintenance of the slitting disc 43, and improving production efficiency. By using the cold air after cooling the slitting disc 43 to drive the grinding component, the recycling of cold air is achieved, the energy utilization efficiency is improved, the demand for additional power sources is reduced, and the energy consumption of the equipment is reduced, wherein the conduit is rotatably connected to the conveying pipe 42.

[0042] In one embodiment, reference Figure 3 The elastic sealing member includes a sealing disk 403 movably arranged in the connecting tube 1 401 and a spring 2 404 arranged between the sealing disk 403 and the inner wall of the connecting tube 1 401. When the rotating tube 40 does not rotate, the spring 2 404 will push the sealing disk 403 to be located at the connecting hole 402, sealing the connecting hole 402, thereby playing a good sealing role and preventing the cold air from leaking out when it is not needed. When the rotating tube 40 rotates and generates centrifugal force, the centrifugal force will overcome the elastic force of the spring 2 404, causing the sealing disk 403 to move, thereby opening the connecting hole 402 and allowing the cold air to smoothly enter the cooling chamber 431, which not only ensures the normal sealing effect, but also can open the connecting hole 402 when needed to ensure the normal operation of the cold air delivery system.

[0043] In one embodiment, reference Figure 4 The driving assembly 30 further includes an outer sleeve 32 fixedly sleeved on the surface of the fixed tube 31 and a through hole 33 opened on the surface of the fixed tube 31 for the outer sleeve 32 to communicate with the fixed tube 31. The side wall of the outer sleeve 32 is connected with an air outlet pipe 37.

[0044] When the cold air enters the fixed tube 31 from the conduit, the gas in the fixed tube 31 accumulates, and the generated air pressure pushes the movable part to move downward, and the movable part drives the grinding assembly to move downward to grind the slitting disc 43. In the process of the movable part moving downward, the through hole 33 will gradually open, so that a part of the cold air in the fixed tube 31 enters the outer sleeve 32. The cold air entering the outer sleeve 32 will eventually be discharged through the air outlet pipe 37 arranged in communication with the side wall. When the through hole 33 is opened, the gas in the fixed tube 31 continues to flow out, and the air pressure in the tube decreases accordingly. When the air pressure drops to a certain level, the movable part moves upward under the action of the air pressure difference, and this cycle is repeated to achieve intermittent grinding of the slitting disc during the composite film slitting process.

[0045] In one embodiment, reference Figure 4 The movable member includes a sealing plug 35 movably arranged in the fixed tube 31 and adapted to the through hole 33, and a movable rod 34 fixedly arranged at the bottom of the sealing plug 35. The bottom of the movable rod 34 passes through the fixed tube 31 and extends to the outside of the fixed tube 31. One end of the movable rod 34 extending to the outside of the fixed tube 31 is fixedly arranged with the polishing assembly. A spring 36 is wound around a section of the surface of the movable rod 34 located inside the fixed tube 31.

[0046] When the cold air enters the fixed tube 31 from the conduit, as the gas in the fixed tube 31 accumulates, the air pressure gradually increases. When the thrust generated by the air pressure is greater than the elastic force of the spring 1 36, the sealing plug 35 is pushed downward. Since the sealing plug 35 is connected to the movable rod 34, the movable rod 34 moves downward with the sealing plug 35, so the grinding assembly also moves downward with the movable rod 34 to grind the slitting knife disc 43. In the process of the sealing plug 35 moving downward, the through hole 33 is gradually opened. At this time, the spring 1 in the fixed tube 31 is opened. Part of the cold air will enter the outer sleeve 32 through the through hole 33, and then be discharged through the air outlet pipe 37. As the cold air is discharged, the air pressure in the fixed tube 31 gradually decreases. When the air pressure in the fixed tube 31 drops to a certain level and the elastic force of spring 1 36 is greater than the thrust generated by the air pressure at this time, spring 1 36 pushes the sealing plug 35 to move upward, and the movable rod 34 and the grinding assembly also move upward. At the same time, the sealing plug 35 gradually re-blocks the through hole 33, preventing the cold air from continuing to flow from the fixed tube 31 to the outer sleeve 32, and so on.

[0047] In one embodiment, reference Figure 1 as well as Figure 2 The grinding assembly includes a mounting plate 50 fixedly arranged at the bottom of the movable rod 34 and a grinding head 51 fixedly arranged at the bottom of the mounting plate 50 and corresponding to the number and position of the slitting discs 43. The slitting discs 43 will wear out after long-term use, affecting the slitting quality and efficiency. The rotating tube 40 drives the slitting disc 43 to rotate, so that the edge of the slitting disc rotates continuously along the bottom of the grinding head 51, maintaining the sharpness and cutting performance of the slitting disc 43, extending the service life of the slitting disc 43, and achieving the effect of fast and stable grinding, thereby ensuring the normal and efficient operation of the synchronous slitting device for the metallized film capacitor multilayer composite film and improving the slitting quality of the product. The grinding assembly cooperates with the moving parts in the driving assembly to realize the automatic grinding function without manual intervention, thereby improving the degree of automation of the device, reducing labor costs and labor intensity, and also improving production efficiency.

[0048] In one embodiment, it further includes a motor installed on the top of the mounting frame 21 and a transmission belt arranged between the output end of the motor and the rotating tube 40. When the motor is started, the motor drives the rotating tube 40 to rotate through the transmission belt to achieve slitting of the composite film.

[0049] In one embodiment, multiple groups of connecting pipes 1 401 and multiple groups of connecting pipes 2 44 in the cooling chamber 431 are alternately distributed, and a pressure valve is installed in the connecting pipe 2 44, so that after the cold air enters the cooling chamber 431 from the connecting pipe 1 401, it can be more evenly dispersed to the entire cooling chamber space, avoiding the cold air from being concentrated in a certain area, thereby improving the cooling uniformity of the slitting knife disc 43, effectively reducing the temperature difference between the various parts of the slitting knife disc 43, and reducing problems such as knife disc deformation caused by uneven temperature. The pressure valve can be installed according to the pressure conditions in the cooling chamber 431. When the pressure in the cooling chamber 431 is too high, the pressure valve opens to allow more cold air to flow into the delivery pipe 42 through the connecting pipe 2 44, thereby reducing the pressure in the cooling chamber 431; when the pressure is too low, the pressure valve closes or reduces the opening to limit the outflow of cold air, so that the cold air can fill the cooling chamber 431.

[0050] Example 2

[0051] A slitting method of a metallized film capacitor multilayer composite film synchronous slitting device, using the metallized film capacitor multilayer composite film synchronous slitting device described in Example 1, comprises the following steps:

[0052] S1: Place the composite film on the table below the slitting assembly;

[0053] S2 Cooling the Slitting Cutter Disc: When slitting is required, cold air is delivered to the rotating tube 40 through the air inlet pipe 41. At the same time, an external force drives the rotating tube 40 to rotate. The centrifugal force generated by the rotation moves the elastic seal in the connecting tube 1 401, opening the connecting hole 402. The cold air flows from the rotating tube 40 through the connecting hole 402 into the cooling chamber 431 of the slitting cutter disc 43 to cool the slitting cutter disc 43.

[0054] S3 performs slitting operation: when the slitting blade 43 is in a cooled state, the electric push rod 20 drives the mounting frame 21 to move downward to cut the composite film.

[0055] S4 Grinding the slitting disc: The cold air in the cooling chamber 431 is transported to the delivery pipe 42 through the connecting pipe 2 44, and then enters the fixed pipe 31. When the air pressure in the fixed pipe 31 accumulates to the point where it can drive the moving part to move downward, the moving part drives the grinding assembly to move downward to grind the slitting disc 43.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A synchronous cutting device for multi-layer composite films of metallized film capacitors, characterized in that: include: Fixed frame (10); A lifting assembly comprises an electric push rod (20) mounted on the top of the inner wall of the fixing frame (10) and a mounting frame (21) arranged on the bottom of the electric push rod (20); The slitting assembly comprises a rotating tube (40) rotatably plugged into the mounting frame (21), a multi-component cutting disc (43) fixedly sleeved on the surface of the rotating tube (40), and a cooling cavity (431) provided in the slitting disc (43); a plurality of groups of one-way flow connecting tubes (401) are integrally formed on the surface of the rotating tube (40) and located in the cooling cavity (431); a plurality of groups of communicating holes (402) are provided on the circumferential surface of the connecting tube (401); an elastic sealing member for sealing the communicating holes (402) is installed in the connecting tube (401); an air inlet pipe (41) is rotatably plugged into one end of the rotating tube (40); a delivery pipe (42) is fixedly plugged into the rotating tube (40); a plurality of groups of connecting tubes (44) are provided in communication between the delivery pipe (42) and the cooling cavity (431); A driving assembly (30) comprises a fixed tube (31) fixedly inserted into the mounting frame (21) and a moving part arranged at the bottom of the fixed tube (31); an air outlet end of the delivery tube (42) is connected to the fixed tube (31) via a conduit; A grinding assembly is fixedly arranged at the bottom of the moving part and located above the slitting assembly; The cold air is delivered to the rotating tube (40) through the air inlet pipe (41), and the rotating tube (40) is driven to rotate by an external force. Under the action of the centrifuge, the elastic sealing member moves, the connecting hole (402) opens, and the cold air enters the cooling cavity (431), and is then delivered to the delivery pipe (42) by the second connecting pipe (44), and finally enters the fixed pipe (31), driving the movable member to move downward, and controlling the grinding assembly to grind the slitting disc (43).

2. The synchronous slitting device for metallized film capacitor multilayer composite films according to claim 1, characterized in that: The elastic sealing member comprises a sealing disk (403) movably arranged in the connecting pipe (401) and a second spring (404) arranged between the sealing disk (403) and the inner wall of the connecting pipe (401).

3. The synchronous slitting device for metallized film capacitor multilayer composite films according to claim 1, characterized in that: The driving assembly (30) further comprises an outer sleeve (32) fixedly sleeved on the surface of the fixed tube (31) and a through hole (33) opened on the surface of the fixed tube (31) for communicating the outer sleeve (32) with the fixed tube (31); an air outlet pipe (37) is provided on the side wall of the outer sleeve (32).

4. The synchronous slitting device for metallized film capacitor multilayer composite films according to claim 3, characterized in that: The movable part comprises a sealing plug (35) movably arranged in the fixed tube (31) and adapted to the through hole (33), and a movable rod (34) fixedly arranged at the bottom of the sealing plug (35), the bottom of the movable rod (34) passes through the fixed tube (31) and extends to the outside of the fixed tube (31), one end of the movable rod (34) extending to the outside of the fixed tube (31) is fixedly arranged with the polishing assembly, and a spring (36) is wound around the surface of the movable rod (34) and a section located inside the fixed tube (31).

5. The synchronous slitting device for metallized film capacitor multilayer composite films according to claim 4, characterized in that: The grinding assembly comprises a mounting plate (50) fixedly arranged at the bottom of the movable rod (34) and grinding heads (51) fixedly arranged at the bottom of the mounting plate (50) and corresponding in number and position to the slitting discs (43).

6. The synchronous slitting device for metallized film capacitor multilayer composite films according to claim 1, characterized in that: It also includes a motor installed on the top of the mounting frame (21) and a transmission belt arranged between the output end of the motor and the rotating tube.

7. The synchronous slitting device for metallized film capacitor multilayer composite films according to claim 1, characterized in that: Multiple groups of connecting pipes 1 (401) and multiple groups of connecting pipes 2 (44) in the cooling chamber (431) are alternately distributed, and a pressure valve is installed in the connecting pipe 2 (44).

8. The slitting method of the synchronous slitting device for metallized film capacitor multilayer composite films according to claim 1, using the synchronous slitting device for metallized film capacitor multilayer composite films according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Place the composite film on the table below the slitting assembly; S2 Cooling the slitting disc: When slitting is required, cold air is delivered to the rotating tube (40) through the air inlet pipe (41), and at the same time, the rotating tube (40) is driven to rotate by an external force, and the centrifugal force generated by the rotation is used to move the elastic sealing member in the connecting tube (401), thereby opening the connecting hole (402), and allowing the cold air to enter the cooling chamber (431) of the slitting disc (43) from the rotating tube (40) through the connecting hole (402), thereby cooling the slitting disc (43); S3 performs slitting operation: when the slitting blade (43) is in a cooled state, the electric push rod (20) drives the mounting frame (21) to move downward to cut the composite film. S4 grinding the slitting disc: the cold air in the cooling chamber (431) is transported to the delivery pipe (42) through the second connecting pipe (44), and then enters the fixed pipe (31). When the air pressure in the fixed pipe (31) accumulates to a level that can drive the moving part to move downward, the moving part drives the grinding assembly to move downward to grind the slitting disc (43).

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