Inflatable cutter shaft and traction belt cutting mechanism

Abstract

The utility model discloses an inflatable cutter shaft and a traction belt cutting mechanism, the inflatable cutter shaft comprises a cutter shaft main body, inflatable blades and an air bag, the cutter shaft main body is provided with a mounting groove extending along the radial direction of the cutter shaft main body, the inflatable blades are arranged in the mounting groove and can slide along the extending direction of the mounting groove, and the air bag is arranged in the mounting groove. The air bag is arranged in the mounting groove in the axial direction of the cutter shaft body, an inflation and deflation channel is formed in the cutter shaft body, the air bag communicates with the inflation and deflation channel to circulate air, and the air bag is arranged below the inflatable blade; a blade resetting assembly is arranged in the cutter shaft main body and is used for driving the inflatable blade to slide into the mounting groove; and along with the increase of the gas pressure in the air bag, the outer wall of the air bag expands outwards in the radial direction and pushes the inflatable blade to move outwards in the radial direction of the cutter shaft main body, so that the cutting edge of the inflatable blade protrudes out of the cutter shaft main body. The method has the advantages of being small in limitation and wide in application range.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to an air-expanding blade shaft and a traction cutting mechanism. Background Technology

[0002] Existing conveyor belt cutting equipment (including but not limited to textile, printing, and lithium battery industries) typically uses methods such as hot melt cutters and bladed cutter mechanisms to achieve automatic tape cutting. However, using a hot melt cutter requires heating the tape with electricity to cut it, which poses a risk of burns during use. Furthermore, it requires electrical control and has a complex overall design, making it unsuitable for heat-resistant materials. Using a bladed cutter mechanism requires a complete cutting system, typically including a cutter, a bottom cutter, a cutter drive, and a tape tensioning device. This system is complex and occupies considerable space, making it unsuitable for use in confined working environments.

[0003] In view of this, the purpose of this utility model is to provide a new technical solution to solve the existing technical problems. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides an air-expanding blade shaft and a traction cutting mechanism, which solves the problem that the use of the existing cutting mechanism is limited by the working space due to its large size.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An air-expanding cutter shaft includes a cutter shaft body, an air-expanding blade, and an air bladder. The cutter shaft body has a mounting groove extending radially from the cutter shaft body. The air-expanding blade is disposed within the mounting groove and is slidable along the extension direction of the mounting groove. The air bladder is axially disposed within the mounting groove along the cutter shaft body. The cutter shaft body has an inflation / deflation channel, and the air bladder communicates with the inflation / deflation channel to allow gas flow. The air bladder is positioned below the air-expanding blade. A blade reset assembly is disposed within the cutter shaft body, which drives the air-expanding blade to slide into the mounting groove.

[0007] As the gas pressure inside the airbag increases, the outer wall of the airbag expands radially outward and pushes the air-expanding blade to move radially outward along the cutter shaft body, so that the cutting edge of the air-expanding blade protrudes outside the cutter shaft body.

[0008] In the above structure, the cutter shaft body includes a roller body, a drive shaft, and an outer sealing plate. The drive shaft is detachably fixed to the drive side of the roller body. The drive shaft has an air filling / draining port, which is connected to the air filling / draining channel. The mounting groove is formed on the roller body and penetrates the end face of the non-drive side of the roller body. The outer sealing plate is disposed on the non-drive side of the roller body to close the end face of the non-drive side of the roller body.

[0009] In the above structure, a blade mounting seat is slidably disposed in the mounting groove, and the air-expanded blade is fixedly mounted on the blade mounting seat.

[0010] In the above structure, the blade mounting base is provided with a blade fixing groove, and the blade mounting base is provided with a plurality of set screw holes on opposite sides that communicate with the blade fixing groove. The air-expanded blade is installed in the blade fixing groove, and a set screw is connected in the set screw hole. The set screw is used to tighten and fix the air-expanded blade.

[0011] In the above structure, blade guide blocks are provided in the mounting groove on both sides of the air-expanded blade, and the blade guide blocks are fixedly connected to the roller body.

[0012] In the above structure, the blade reset assembly is disposed between the blade mounting base and the blade guide block. The blade reset assembly includes a base plate and a plurality of reset springs. The plurality of reset springs are evenly disposed on the base plate, and the end of the reset spring away from the base plate is fixedly connected to the blade guide block.

[0013] In the above structure, sealing blocks are connected to both ends of the airbag, and a fixing block is fixedly connected to the roller body. The fixing block is used to press and fix the sealing block.

[0014] In the above structure, the outer surface of the roller is configured as a rubber-coated roller surface.

[0015] In the above structure, the air-expanding blade is a serrated blade, and the serrated edge of the air-expanding blade has a structure that is high in the middle and low on both sides.

[0016] This utility model also provides:

[0017] A traction cutting mechanism includes an air-expanded blade shaft with the structure described above.

[0018] The beneficial effects of this utility model are as follows: This utility model adopts the method of adding an air-expanding blade inside the roller body. An air-expanding blade, an air bladder, and a blade reset assembly are set inside the cutter shaft body. When the air bladder is inflated, it can drive the air-expanding blade to extend out of the cutter shaft body, which can quickly perform the cutting action. After the cutting is completed, the air bladder is deflated, and the blade reset assembly drives the air-expanding blade to quickly retract into the cutter shaft body. The cutter shaft body can also pull the material belt. When the air-expanding cutter shaft of this utility model is applied to the traction cutting mechanism, the material belt can be cut by the air-expanding blade extending from the roller surface without changing the original belt feeding layout. Moreover, the structure is simple, the space occupied is small, and the application range is wide. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0021] Figure 2 This is a schematic diagram showing the disassembled structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the axial cross-sectional structure of the roller body of this utility model;

[0023] Figure 4 This is a schematic diagram of the radial cross-sectional structure of this utility model.

[0024] Reference numerals: 1. Cutter shaft body; 11. Roller body; 111. Mounting groove; 112. Blade guide block; 1121. Fixing protrusion; 113. Fixing groove; 12. Drive shaft; 121. Air filling / deleting port; 122. Bearing mounting position; 123. Drive mounting position; 124. Position sensor mounting position; 13. Outer sealing plate; 14. Fixing pressure block; 141. Pressure block set screw; 15. Air filling / deleting channel; 2. Inflated blade; 21. Blade mounting seat; 211. Blade fixing groove; 212. Set screw; 3. Airbag; 31. Sealing pressure block; 4. Blade reset assembly; 41. Base plate; 42. Reset spring. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described below.

[0026] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0027] Reference Figures 1 to 4 This application provides an air-expanding cutter shaft, which can be applied to the automatic cutting of material coils in automatic coil changing operations. It includes a cutter shaft body 1, an air-expanding blade 2, an air bladder 3, and a blade reset assembly 4. The cutter shaft body 1 has a mounting groove 111 extending radially from its surface. The air-expanding blade 2 is installed inside the cutter shaft body 1. Specifically, the air-expanding blade 2 is installed within the mounting groove 111 and can slide along the extension direction of the mounting groove 111, allowing it to extend outside or retract inside the cutter shaft body 1. The air bladder 3 is axially disposed in the mounting groove 111 along the cutter shaft body 1. The cutter shaft body 1 has an inflation / deflation channel 15, and the air nozzle on the air bladder 3 communicates with the inflation / deflation channel 15 to allow gas to flow. An airbag 3 is positioned below the inflatable blade 2, and a blade reset assembly 4 is positioned between the inflatable blade 2 and the cutter shaft body 1. The blade reset assembly 4 is used to drive the inflatable blade 2 to slide into the mounting groove 111 when the airbag 3 deflates. The airbag 3 is inflated through the inflation / deflation channel 15. As the gas pressure inside the airbag 3 increases, the outer wall of the airbag 3 expands radially outward, pushing the inflatable blade 2 radially outward along the cutter shaft body 1, causing the cutting edge of the inflatable blade 2 to protrude beyond the cutter shaft body 1. When the airbag 3 deflates, gas escapes from the inflation / deflation channel 15. As the gas pressure inside the airbag 3 decreases, the outer wall of the airbag 3 contracts radially inward, and the blade reset assembly 4 drives the inflatable blade 2 radially inward along the cutter shaft body 1, causing the inflatable blade 2 to retract into the cutter shaft body 1.

[0028] The cutter shaft body 1 includes a roller body 11, a drive shaft 12, and an outer sealing plate 13. The drive shaft 12 is detachably fixed to the drive side of the roller body 11. The end of the drive shaft 12 has an air filling / draining port 121, which is connected to the air filling / draining channel 15. The air filling / draining port 121 is used to install a rotary joint for air supply and venting. The outer sealing plate 13 is detachably fixed to the non-drive side of the roller body 11 to seal the non-drive side end face of the roller body 11.

[0029] Reference Figure 2 The drive shaft 12 is provided with a bearing mounting position 122, a drive mounting position 123, and a position sensor mounting position 124. The bearing mounting position 122 can be used to install a bearing for rotational support of the overall device; the drive mounting position 123 can be used to install a pulley or gear or other transmission components. The transmission components are connected to the rotary drive mechanism to drive the cutter shaft body 1 to rotate, thereby applying the air-expanded cutter shaft to automatic roll changing operations; the position sensor mounting position 124 can be used to install a position sensor to locate the position of the air-expanded blade 2.

[0030] Roller body 11 is used to install and support various air expansion components. During use, roller body 11 can pull the material belt. A mounting groove 111 is formed on roller body 11, extending radially inward from the roller surface of roller body 11. The length direction of mounting groove 111 is parallel to the length direction of roller body 11, and it penetrates the non-drive side end face of roller body 11. Outer sealing plate 13 is detachably fixed to the non-drive side of roller body 11 to close the opening of mounting groove 111 on the non-drive side of roller body 11. The mounting groove 111 penetrating the non-drive side end face of roller body 11 helps reduce the installation difficulty of components such as airbag 3. The connection and fixation between outer sealing plate 13 and roller body 11, and between drive shaft 12 and roller body 11, can be secured using conventional fasteners such as screws. The inflation / deflation channel 15 is opened on the roller body 11. Specifically, the inflation / deflation channel 15 is opened on the drive side of the roller body 11, and the inflation / deflation channel 15 connects the inflation / deflation port 121 on the drive shaft 12 with the mounting groove 111 on the roller body 11. The air nozzle on the airbag 3 set in the mounting groove 111 is connected to the inflation / deflation channel 15 to realize the flow of gas.

[0031] In this embodiment, the outer surface of the roller body 11 is set as a rubber-coated roller surface. Setting the roller surface as a rubber-coated roller surface is beneficial to increasing the friction coefficient of the roller surface. When the material belt is pulled, the friction between the material belt and the roller surface can be increased. When the air-expanding blade 2 performs the material belt cutting action, the friction between the material belt and the roller surface can reduce the impact of the cutting action on the overall belt tension.

[0032] Reference Figures 2 to 4 A blade mounting seat 21 is slidably disposed in the mounting groove 111, and the air-expanded blade 2 is fixedly mounted on the blade mounting seat 21. In this embodiment, the blade mounting seat 21 has a blade fixing groove 211 extending from top to bottom, and several set screw holes communicating with the blade fixing groove 211 are opened on opposite sides of the blade mounting seat 21. The air-expanded blade 2 is installed in the blade fixing groove 211, and a set screw 212 is connected in the set screw hole. The set screws 212 on both sides tighten and fix the air-expanded blade 2.

[0033] After the airbag 3 is inflated, the air-expanding blade 2 can quickly extend out of the cutter shaft body 1 to cut the material strip. Furthermore, the air-expanding blade 2 is a serrated blade, and in this embodiment, the serrated blade of the air-expanding blade 2 has a structure that is high in the middle and low on both sides. This setting helps to reduce the dependence of the cutting action on the sharpness of the blade and ensures the stability and speed of the cutting action.

[0034] A blade guide block 112 is provided on the roller body 11. The blade guide block 112 is used to guide the extension and retraction of the air-expanding blade 2. Specifically, blade guide blocks 112 are fixedly provided on both sides of the mounting groove 111, and a slit is formed between the two blade guide blocks 112 to allow the air-expanding blade 2 to extend and retract. The air-expanding blade 2 extends and retracts under the guidance of the slit. In this embodiment, a fixing groove 113 communicating with the mounting groove 111 is opened in the roller body 11. A fixing protrusion 1121 is fixedly connected to the blade guide block 112. The fixing protrusion 1121 is engaged and fixed with the fixing groove 113 to realize the installation and fixation of the blade guide block 112. In addition, in order to further ensure the fixing reliability of the blade guide block 112, the blade guide block 112 can be fixed by dispensing glue.

[0035] The blade reset assembly 4 is disposed between the blade mounting base 21 and the blade guide block 112, and is used to drive the inflated blade 2 to slide into the mounting groove 111 when the airbag 3 is deflated. Specifically, the blade reset assembly 4 includes a base plate 41 and a plurality of reset springs 42. The plurality of reset springs 42 are evenly disposed on the base plate 41. The base plate 41 is disposed on the side of the blade mounting base 21 facing away from the airbag 3. The end of the reset spring 42 away from the base plate 41 is connected to the blade guide block 112.

[0036] In this embodiment, to ensure uniform force on both sides of the air-expanded blade 2, blade reset components 4 are provided on both sides of the air-expanded blade 2. Alternatively, in other embodiments, the reset spring 42 can be fixedly connected at one end to the blade mounting base 21 and at the other end to the blade guide block 112. Placing several reset springs 42 on the base plate 41 and connecting it to the blade mounting base 21 helps ensure uniform force between the blade reset components 4 and the blade mounting base 21, effectively reducing the possibility of uneven force distribution on the blade mounting base 21, which could lead to the air-expanded blade 2 extending or retracting malfunctions.

[0037] When the airbag 3 is inflated, its outer wall expands radially outward, causing the return spring 42 to elastically contract. When the pneumatic blade 2 extends beyond the cutter shaft body 1, the elasticity of the airbag 3 allows it to maintain the pneumatic blade 2 in a force-balanced position through deformation when the clamping force is large. This prevents the clamping force from exceeding the reverse force of the cutter shaft body 1 and causing deformation. The return spring 42 also supports the pneumatic blade 2, ensuring it remains more stably in the force-balanced position and further preventing deformation of the cutter shaft body 1. When the airbag 3 is deflated, its outer wall contracts radially inward. At this time, the return spring 42 releases its elasticity, pulling the blade mounting seat 21 inward into the cutter shaft body 1, which in turn causes the pneumatic blade 2 to contract inward into the cutter shaft body 1.

[0038] Furthermore, sealing blocks 31 are connected to both ends of the airbag 3, and fixing blocks 14 are fixedly connected to the roller body 11. The fixing blocks 14 are used to press and fix the sealing blocks 31. Sealing blocks 31 are provided at both ends of the airbag 3 to fix the airbag 3 and prevent displacement of the airbag 3 during inflation and deflation. The fixing blocks 14 are provided to press and fix the sealing blocks 31 to ensure the reliability of the installation of the sealing blocks 31. In this embodiment, a pressure block set screw 141 is connected inside the fixing block 14, and the pressure block set screw 141 is used to press and fix the sealing blocks 31.

[0039] Based on the above-described structure, this application also provides:

[0040] A traction cutting mechanism includes an air-expanded blade shaft with the structure described above.

[0041] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A pneumatic cutter shaft, characterized in that: The device includes a cutter shaft body, an air-expanding blade, and an air bladder. The cutter shaft body has a mounting groove extending radially from the cutter shaft body. The air-expanding blade is disposed within the mounting groove and can slide along the extension direction of the mounting groove. The air bladder is axially disposed within the mounting groove along the cutter shaft body. The cutter shaft body has an inflation / deflation channel, and the air bladder communicates with the inflation / deflation channel to allow gas to circulate. The air bladder is located below the air-expanding blade. A blade reset assembly is disposed within the cutter shaft body, which drives the air-expanding blade to slide into the mounting groove. As the gas pressure inside the airbag increases, the outer wall of the airbag expands radially outward and pushes the air-expanding blade to move radially outward along the cutter shaft body, so that the cutting edge of the air-expanding blade protrudes outside the cutter shaft body.

2. The air-expanding cutter shaft according to claim 1, characterized in that: The cutter shaft body includes a roller body, a drive shaft, and an outer sealing plate. The drive shaft is detachably fixed to the drive side of the roller body. The drive shaft has an air filling / draining port, which is connected to the air filling / draining channel. The mounting groove is formed on the roller body and penetrates the end face of the non-drive side of the roller body. The outer sealing plate is disposed on the non-drive side of the roller body to seal the end face of the non-drive side of the roller body.

3. The air-expanding cutter shaft according to claim 2, characterized in that: A blade mounting seat is slidably disposed in the mounting groove, and the air-expanded blade is fixedly installed in the blade mounting seat.

4. The air-expanding cutter shaft according to claim 3, characterized in that: The blade mounting base has a blade fixing groove, and the blade mounting base has several set screw holes on opposite sides that connect to the blade fixing groove. The air-expanded blade is installed in the blade fixing groove, and a set screw is connected in the set screw hole to tighten and fix the air-expanded blade.

5. The air-expanding cutter shaft according to claim 4, characterized in that: The mounting groove is provided with blade guide blocks located on opposite sides of the air-expanded blade, and the blade guide blocks are fixedly connected to the roller body.

6. The air-expanding cutter shaft according to claim 5, characterized in that: The blade reset assembly is disposed between the blade mounting base and the blade guide block. The blade reset assembly includes a base plate and a plurality of reset springs. The plurality of reset springs are evenly disposed on the base plate, and the end of the reset spring away from the base plate is fixedly connected to the blade guide block.

7. The air-expanding cutter shaft according to claim 2, characterized in that: The airbag is connected to sealing blocks at both ends, and a fixing block is fixedly connected to the roller body. The fixing block is used to press and fix the sealing blocks.

8. The air-expanding cutter shaft according to claim 2, characterized in that: The outer surface of the roller is configured as a rubber-coated roller surface.

9. The air-expanding cutter shaft according to claim 1, characterized in that: The air-expanding blade is a serrated blade, and the serrated edge of the air-expanding blade has a structure that is high in the middle and low on both sides.

10. A traction and cutting mechanism, characterized in that: Includes an air-expanding cutter shaft as described in any one of claims 1-9.

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