Shearing tool

Abstract

This application provides a cutting tool, including a housing, a drive assembly, a transmission assembly, a blade assembly, and a blade maintenance assembly. The drive assembly and the transmission assembly are installed inside the housing, and the drive assembly is connected to the transmission assembly. The front end of the housing has an installation opening for the blade assembly to move freely. The blade assembly includes a blade connected to the front end of the transmission assembly. The blade maintenance assembly is disposed in the installation opening and forms a flexible channel for the blade to pass through. The drive assembly drives the transmission assembly to move and causes the blade to reciprocate relative to the blade maintenance assembly, so that the blade extends from the flexible channel to the outside of the housing and retracts from the outside of the housing into the flexible channel. When the blade moves and passes through the flexible channel, the blade maintenance assembly at least partially contacts the blade. Therefore, when the blade retracts, the blade maintenance assembly can wipe away any dirt adhering to the blade, cleaning the blade, preventing corrosion and rust, and thus improving the blade's service life.

Description

Technical Field

[0001] This application relates to the technical field of the power tool industry, specifically to a cutting tool. Background Technology

[0002] Existing pipe cutters, in order to ensure smooth cutting, grind the blade edge to a very sharp point. This grinding process removes the protective layer from the blade surface, exposing the edge to air and making it prone to rust, thus affecting the blade's lifespan. Currently, pipe cutter blades are not protected in any way. As a result, in harsh working conditions, after cutting pipes, the blades become contaminated with water and various stains. If the blades are not cleaned, this accelerates corrosion and rust, further shortening the blade's lifespan. Summary of the Invention

[0003] In view of this, this application provides a cutting tool that can clean the blade during blade movement to prevent blade corrosion and rust, and improve the blade's service life.

[0004] The first aspect of this application provides a cutting tool, including a housing, a drive assembly, a transmission assembly, a blade assembly, and a blade maintenance assembly. The drive assembly and the transmission assembly are installed inside the housing, with the drive assembly connected to the transmission assembly. The front end of the housing has an installation opening for the blade assembly to move freely. The blade assembly includes a blade connected to the front end of the transmission assembly. The blade maintenance assembly is disposed in the installation opening and has a flexible channel for the blade to pass through. The drive assembly drives the transmission assembly to move and causes the blade to reciprocate relative to the blade maintenance assembly, so that the blade extends from the flexible channel to the outside of the housing and retracts from the outside of the housing into the flexible channel. When the blade moves and passes through the flexible channel, the blade maintenance assembly at least partially contacts the blade.

[0005] In one embodiment, the blade maintenance assembly includes a liquid reservoir having a protective liquid; wherein a flexible channel is formed in the liquid reservoir, and the liquid reservoir contacts the blade when the blade moves and passes through the flexible channel.

[0006] In one embodiment, the liquid storage component has liquid absorption capacity and elasticity, and the liquid storage component includes a first liquid storage element and a second liquid storage element, with a flexible channel formed between the first liquid storage element and the second liquid storage element.

[0007] In one embodiment, the first liquid storage element includes a first contact surface that contacts one side of the blade, and the second liquid storage element includes a second contact surface that contacts the other side of the blade. The first and second contact surfaces are disposed opposite to each other. The first contact surface near the rear end of the transmission assembly and the second contact surface near the rear end of the transmission assembly are parallel and spaced apart. The front ends of the first and second contact surfaces are respectively formed with inclined surfaces. When the blade is retracted into the housing, the inclined surfaces formed by the first and second contact surfaces are tightly fitted together. When the blade extends out of the housing from the flexible channel, the inclined surfaces formed by the first and second contact surfaces are separated by the blade.

[0008] In one embodiment, after the blade is retracted into the housing, the angle between the inclined surfaces formed by the first contact surface and the second contact surface in the fit state is less than or equal to the blade's cutting angle.

[0009] In one embodiment, the distance between the rear ends of the first contact surface and the rear ends of the second contact surface is less than the thickness of the blade.

[0010] In one embodiment, the flexible channel is at least partially closed when the tip of the blade does not extend from the flexible channel.

[0011] In one embodiment, the blade maintenance assembly further includes a mounting housing detachably connected to a mounting opening; the mounting housing forms a mounting space for mounting a liquid reservoir, the mounting space being located on the inner side of the mounting housing near the blade.

[0012] In one embodiment, the mounting housing includes a first housing for accommodating a first liquid storage element and a second housing for accommodating a second liquid storage element. The inner circumferential shape and size of the first housing are adapted to the shape and size of the first liquid storage element; the inner circumferential shape and size of the second housing are adapted to the shape and size of the second liquid storage element; the first housing is connected to the second housing via a groove structure.

[0013] In one embodiment, the blade assembly further includes a blade housing mounted on the front end of the housing, with the blade and transmission assembly disposed within the blade housing. The blade housing has a first opening and a second opening at its two ends, respectively. The transmission assembly is connected to the drive assembly through the first opening. The second opening is located at the mounting opening, and the mounting housing of the blade maintenance assembly is detachably mounted to the second opening, with the blade maintenance assembly closing the second opening. The blade housing and the blade maintenance assembly together close the mounting opening.

[0014] In one embodiment, the mounting housing has a locking protrusion and a disassembly portion, and the blade housing has a locking groove at the second opening corresponding to the locking protrusion. The disassembly portion is located on the outside of the mounting housing away from the blade. When the blade maintenance assembly is installed onto the blade housing, the locking protrusion engages in the locking groove, and the disassembly portion contacts the blade housing.

[0015] In one embodiment, the blade assembly further includes a blade holder corresponding to the blade, the blade holder extending outwardly from the blade housing from the second opening, and the blade holder being bent in the direction of the blade housing.

[0016] Compared with the prior art, this application has at least the following advantages:

[0017] In the cutting tool of this application embodiment, by setting the blade maintenance component in the mounting switch of the housing, and the blade maintenance component forming a flexible channel for the blade to pass through, when the drive component drives the transmission component to move and drives the blade to reciprocate, the blade can extend from the flexible channel to the outside of the housing and retract from the outside of the housing into the flexible channel. When the blade moves and passes through the flexible channel, the blade maintenance component at least partially contacts the blade, and then when the blade retracts, the blade maintenance component can wipe away the dirt adhering to the blade, thereby cleaning the blade, preventing the blade from corroding and rusting, and thus improving the service life of the blade. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the cutting tool provided in the embodiments of this application.

[0019] Figure 2 This is a schematic diagram of the internal structure of the cutting tool provided in the embodiments of this application.

[0020] Figure 3 This is a schematic diagram of the blade maintenance assembly provided in the embodiments of this application.

[0021] Figure 4 This is a schematic diagram showing the exploded structure and assembly state of the blade maintenance assembly provided in the embodiments of this application.

[0022] Figure 5 This is a schematic diagram of the blade and liquid storage component provided in the embodiments of this application.

[0023] Figure 6 This is a schematic diagram of the structure of the second housing provided in the embodiments of this application.

[0024] Figure 7 This is a schematic diagram of the blade housing provided in an embodiment of this application.

[0025] Figure 8 This is an exploded structural diagram of the blade assembly and blade maintenance assembly provided in the embodiments of this application.

[0026] Figure 9 The present application provides a schematic diagram of the structure of the second housing and part of the blade housing.

[0027] Main component symbols

[0028] Cutting tool 100

[0029] Casing 1

[0030] Installation opening 11

[0031] Main body 12

[0032] Grip section 13

[0033] Control Button 14

[0034] Driver Component 2

[0035] Transmission component 3

[0036] Fixture 31

[0037] 32 lead screw

[0038] Connector 33

[0039] Spring 34

[0040] Blade assembly 4

[0041] Blade 41

[0042] Blade housing 42

[0043] First opening 421

[0044] Second opening 422

[0045] Card slot 423

[0046] First blade 424

[0047] First Installation Section 4241

[0048] Second blade 425

[0049] Second Installation Section 4251

[0050] Mounting plate 4252

[0051] Blade holder 43

[0052] First Knife Stand 431

[0053] Second knife holder 432

[0054] Blade maintenance kit 5

[0055] Flexible channel 51

[0056] Liquid storage component 52

[0057] First liquid storage element 521

[0058] First contact surface 5211

[0059] Second liquid storage element 522

[0060] Second contact surface 5221

[0061] Mounting housing 53

[0062] First shell 531

[0063] First surface 5311

[0064] Sliding protrusion 5312

[0065] Second stop section 5313

[0066] Second shell 532

[0067] Second surface 5321

[0068] Third surface 5322

[0069] Fourth surface 5323

[0070] Slide 5324

[0071] First stop section 5325

[0072] Third stop section 5326

[0073] Card protrusion 5327

[0074] Disassembly part 5328 Detailed Implementation

[0075] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application. Unless otherwise specified, the different embodiments and features described below can be combined with each other.

[0076] It should be noted that when a device is referred to as "connecting" another device, it can be directly connected to the other device or indirectly connected (with an intermediary device).

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0078] Please see Figure 1 and Figure 2 , Figure 1 This paper shows a schematic diagram of the structure of the cutting tool 100 provided in an embodiment of this application. Figure 2 A schematic diagram of the internal structure of the shearing tool 100 provided in this embodiment is shown. The shearing tool 100 provided in this embodiment is used for cutting or shearing materials, such as metal sheets, plastic pipes, plastic sheets, etc. Specifically, the shearing tool 100 can be used to cut PVC (Polyvinyl Chloride) or PPR (polypropylene random copolymer) pipes, etc.

[0079] The shearing tool 100 includes a housing 1, a drive assembly 2, a transmission assembly 3, and a blade assembly 4. The drive assembly 2 and the transmission assembly 3 are installed inside the housing 1, and the drive assembly 2 is connected to the transmission assembly 3. The front end of the housing 1 has an installation opening 11 for the blade assembly 4 to move freely.

[0080] The blade assembly 4 includes a blade 41 connected to the front end of the transmission assembly 3, wherein the drive assembly 2 is used to drive the transmission assembly 3 to move, so that the transmission assembly 3 drives the blade 41 to perform reciprocating shearing motion.

[0081] Specifically, the housing 1 has a main body 12 and a grip 13. The main body 12 may be generally cylindrical and extend in the front-to-back direction. The drive assembly 2 and the transmission assembly 3 are installed in the main body 12. The drive assembly 2 is installed at the rear end of the main body 12, and the transmission assembly 3 is installed near the front end of the main body 12 relative to the drive assembly 2. The mounting opening 11 is opened at the front end of the main body 12. The grip 13 is located at the upper end of the main body 12. The grip 13 is for the user to hold and may be equipped with a control button 14 for operation. The control button 14 is used to control the working state of the cutting tool 100.

[0082] Combination Figure 2 and Figure 3In this embodiment, the cutting tool 100 may further include a blade maintenance assembly 5, which is disposed in the mounting opening 11 and forms a flexible channel 51 for the blade 41 to pass through. When the drive assembly 2 drives the transmission assembly 3 to move and cause the blade 41 to reciprocate, the blade 41 also reciprocates relative to the blade maintenance assembly 5, so that the blade 41 extends from the flexible channel 51 to the outside of the housing 1 and retracts from the outside of the housing 1 into the flexible channel 51. When the blade 41 moves and passes through the flexible channel 51, the blade maintenance assembly 5 at least partially contacts the blade 41.

[0083] Based on this, when the blade 41 retracts from the outer side of the housing 1 into the flexible channel 51, the blade maintenance component 5 at least partially contacts the blade 41, thereby wiping away the dirt adhering to the blade 41, thus cleaning the blade 41, preventing the blade 41 from corroding and rusting, and thus improving the service life of the blade 41.

[0084] In some embodiments, when the tip of the blade 41 does not extend from the flexible channel 51, the flexible channel 51 is at least partially closed, forming a closed space between the inside of the housing 1 and the outside, which can prevent external dust and moisture from entering the inside of the housing 1. It can be understood that when the tip of the blade 41 does not extend from the flexible channel 51, at least the tip of the flexible channel 51 can be partially closed.

[0085] In some embodiments, the blade maintenance assembly 5 includes a liquid reservoir 52, which is provided with a protective liquid. A flexible channel 51 is formed in the liquid reservoir 52. When the blade 41 moves and passes through the flexible channel 51, the liquid reservoir 52 contacts the blade 41. Thus, as the blade 41 retracts from the outside of the housing 1 into the flexible channel 51, the liquid reservoir 52 wipes away any dirt adhering to the blade 41 while the protective liquid in the liquid reservoir 52 encapsulates the blade 41, thereby protecting it and further preventing rust, thus further extending the service life of the blade 41.

[0086] In this embodiment, the protective liquid can be any liquid that can prevent the cutting tool 41 from corroding or rusting, such as metalworking fluid, lubricating oil, machine oil, etc., wherein the metalworking fluid is, for example, any one of cutting fluid, cutting oil, emulsion, stamping oil, quenching oil, quenching agent, high temperature oil, grinding fluid, rust-preventive oil, etc.

[0087] In some embodiments, the liquid storage component 52 has liquid absorption capacity and elasticity. Thus, the elastic liquid storage component 52 forms a flexible channel 51. When the blade 41 reciprocates relative to the liquid storage component 52, the blade 41 squeezes the liquid storage component 52, causing the protective liquid adsorbed in the liquid storage component 52 to flow out onto the blade 41. Furthermore, because the liquid storage component 52 has liquid absorption capacity, after the protective liquid in the liquid storage component 52 is consumed, the liquid storage component 52 can be reabsorbed with protective liquid. Therefore, even if the protective liquid is consumed, the liquid storage component 52 does not need to be replaced; it can be used again simply by reabsorbing protective liquid.

[0088] In some specific examples, the liquid storage component 52 may be made of a material with liquid absorption capacity and elasticity, such as a sponge or wool felt.

[0089] like Figure 4 As shown, the liquid storage component 52 may include a first liquid storage element 521 and a second liquid storage element 522, with a flexible channel 51 formed between the first liquid storage element 521 and the second liquid storage element 522. It is understood that both the first liquid storage element 521 and the second liquid storage element 522 are made of a material with liquid absorption capacity and elasticity. Of course, in some other embodiments, the flexible channel 51 may also be formed within a single liquid storage element.

[0090] Furthermore, the first liquid storage element 521 includes a first contact surface 5211 that contacts one side of the blade 41, and the second liquid storage element 522 includes a second contact surface 5221 that contacts the other side of the blade 41. The first contact surface 5211 and the second contact surface 5221 are disposed opposite to each other. The first contact surface 5211 is located near the rear end of the transmission assembly 3, and the second contact surface 5221 is located near the rear end of the transmission assembly 3 and is parallel and spaced apart. The front ends of the first contact surface 5211 and the second contact surface 5221 respectively form inclined surfaces (not shown in the figure).

[0091] When the blade 41 retracts into the housing 1, the inclined surfaces formed by the first contact surface 5211 and the second contact surface 5221 fit tightly together, isolating the interior of the housing 1 from the outside. When the blade 41 extends out of the housing 1 from the flexible channel 51, the inclined surfaces formed by the first contact surface 5211 and the second contact surface 5221 are separated by the blade 41.

[0092] When the blade 41 extends outward from inside the housing 1, it first enters the flexible channel 51 through the parallel channel formed by the rear end of the first contact surface and the rear end of the second contact surface 5221, then squeezes the front end of the first contact surface 5211 and the front end of the second contact surface 5221, and then extends out of the housing 1. The parallel channel formed by the rear end of the first contact surface and the rear end of the second contact surface 5221 is part of the flexible channel 51.

[0093] It is understood that after the blade 41 is retracted into the housing 1, the blade 41 can at least partially maintain contact with the rear end of the first contact surface 5211 and the rear end of the second contact surface 5221. Alternatively, after the blade 41 is retracted into the housing 1, the blade 41 can also be completely out of contact with the liquid storage component 52, and during the outward extension process, it enters the flexible channel 51 through the parallel channel formed by the rear end of the first contact surface and the rear end of the second contact surface 5221.

[0094] like Figure 5 As shown, after the blade 41 is retracted into the housing 1, the included angle α of the inclined surfaces formed by the first contact surface 5211 and the second contact surface 5221 in the fit state is less than or equal to the cutting edge angle β of the blade 41. In this way, the blade 41 can pass smoothly through the flexible channel 51 without damaging the first liquid storage element 521 and the second liquid storage element 522.

[0095] The distance between the rear ends of the first contact surface 5211 and the second contact surface 5221 is less than the thickness of the blade 41, thus ensuring that the first liquid storage element 521 and the second liquid storage element 522 can contact the blade 41, allowing the protective liquid to envelop the blade 41 and protect it. Of course, to ensure that the blade 41 can smoothly enter the flexible channel 51, the distance between the rear ends of the first contact surface 5211 and the second contact surface 5221 can be greater than the thickness of the cutting edge at the tip of the blade 41.

[0096] Please refer to it again. Figure 2 , Figure 3 and Figure 4 In some embodiments, the blade maintenance assembly 5 further includes a mounting housing 53, which is detachably connected to the mounting opening 11. This allows for easy disassembly and assembly of the blade maintenance assembly 5 when the liquid reservoir 52 in the blade maintenance assembly 5 is damaged, becomes soiled and needs cleaning, or needs to be replenished with protective liquid.

[0097] The mounting housing 53 forms a mounting space for mounting the liquid storage component 52. The mounting space is located on the inner side of the mounting housing 53 near the blade 41, and the liquid storage component 52 disposed in the mounting space is also close to the blade 41.

[0098] The mounting housing 53 includes a first housing 531 that houses the first liquid storage element 521 and a second housing 532 that houses the second liquid storage element 522. The inner circumferential shape and dimensions of the first housing 531 are adapted to the shape and dimensions of the first liquid storage element 521. The inner circumferential shape and dimensions of the second housing 532 are adapted to the shape and dimensions of the second liquid storage element 522. The first housing 531 can be connected to the second housing 532 via a sliding groove 5324.

[0099] In some specific examples, combined Figure 4 and Figure 6 As shown, the first housing 531 includes a first surface 5311, and the second housing 532 includes a second surface 5321, a third surface 5322, and a fourth surface 5323. The shape and size of the first surface 5311 are adapted to the shape and size of the first liquid storage element 521, and the shape and size of the second surface 5321 are adapted to the shape and size of the second liquid storage element 522. The surface of the first liquid storage element 521 opposite to the first contact surface 5211 contacts the first surface 5311, and the surface of the second liquid storage element 522 opposite to the second contact surface 5221 contacts the second surface 5321. In the second housing 532, the third surface 5322 and the fourth surface 5323 are parallel and perpendicularly disposed at both ends of the second surface 5321, and parallel grooves 5324 are respectively formed on the third surface 5322 and the fourth surface 5323. Correspondingly, sliding protrusions 5312 are formed at the corresponding ends of the first housing 531 and the third surface 5322 and the fourth surface 5323.

[0100] Based on this, when assembling the blade maintenance assembly 5, the second liquid storage element 522 can be placed on the second surface 5321 of the second housing 532 first, then the first liquid storage element 521 can be placed on the second liquid storage element 522, and finally the sliding protrusion 5312 of the first housing 531 can be slid into the end of the groove 5324 to complete the assembly of the blade maintenance assembly 5, so that a flexible channel 51 is formed between the first liquid storage element 521 and the second liquid storage element 522. It can be understood that when the sliding protrusion 5312 of the first housing 531 slides into the end of the groove 5324, the first housing 531 and the second housing 532 have a certain squeezing effect on the first liquid storage element 521 and the second liquid storage element 522, which will cause the inclined surface formed at the front end of the first contact surface 5211 and the inclined surface formed by the second contact surface 5221 to form local squeezing, thereby making the inclined surface formed at the front end of the first contact surface 5211 and the inclined surface formed by the second contact surface 5221 fit tightly together (e.g., Figure 4 The state of the first reservoir element 521 and the second reservoir element 522 after the blade maintenance assembly 5 is assembled is shown.

[0101] Furthermore, a first stop 5325 can be provided at the same end of the two sliding grooves 5324. This allows the sliding protrusion 5312 of the first housing 531 to slide into the sliding groove 5324 from the end away from the first stop 5325. When the sliding protrusion 5312 abuts against the first stop 5325, the assembly of the blade maintenance assembly 5 is completed. When the blade maintenance assembly 5 is installed into the mounting opening 11, the first stop 5325 is located on the outer side of the mounting housing 53 away from the blade 41. This prevents the first housing 531 from slipping during use and improves the stability of the blade maintenance assembly 5.

[0102] Additionally, a second stop portion 5313 may be protruding from the periphery of the first surface 5311. The shape and size of the second stop portion 5313 are adapted to the shape and size of the first liquid storage element 521. A third stop portion 5326 may also be protruding from the edges of the second surface 5321, excluding the two ends forming the third surface 5322 and the fourth surface 5323. The shape and size of the third surface 5322, the fourth surface 5323, and the third stop portion 5326 are adapted to the shape and size of the second liquid storage element 522. The height of the third stop portion 5326 and the fourth stop portion is less than the height of the third surface 5322 and the fourth surface 5323. When the blade maintenance assembly 5 is assembled, the second stop portion 5313 is spaced apart from the third stop portion 5326 and the fourth stop portion to form an opening for the blade 41 to extend into and out of the flexible channel 51. By providing a second stop 5313, a third stop 5326, and a fourth stop, the first liquid storage element 521 and the second liquid storage element 522 can be prevented from falling. It is understood that the third stop 5326 and the fourth stop can be of the same height.

[0103] Combination Figure 2 , Figure 3 as well as Figures 7 to 9 As shown, in some embodiments, the blade assembly 4 further includes a blade housing 42, which is mounted on the front end of the housing 1. The blade 41 and the transmission assembly 3 are disposed inside the blade housing 42. A first opening 421 and a second opening 422 are formed at both ends of the blade housing 42, respectively. The transmission assembly 3 is connected to the drive assembly 2 through the first opening 421. The second opening 422 is located at the mounting opening 11. The mounting housing 53 of the blade maintenance assembly 5 is detachably mounted to the second opening 422, and the blade maintenance assembly 5 closes the second opening 422. The blade housing 42 and the blade maintenance assembly 5 together close the mounting opening 11, thereby preventing external dust and moisture from entering the interior of the housing 1.

[0104] In this embodiment, the blade housing 42 can be an aluminum shell. The blade housing 42 is also generally cylindrical and extends in the front-to-back direction, and is mounted within the main body 12.

[0105] The mounting housing 53 has a locking protrusion 5327, and the blade housing 42 has a locking groove 423 at the second opening 422 corresponding to the locking protrusion 5327. When the blade maintenance assembly 5 is installed on the blade housing 42, the locking protrusion 5327 is engaged in the locking groove 423.

[0106] The mounting housing 53 also has a disassembly portion 5328, which is located on the outer side of the mounting housing 53 away from the blade 41. When the blade maintenance assembly 5 is installed onto the blade housing 42, the disassembly portion 5328 contacts the blade housing 42. When removing the blade maintenance assembly 5 from the blade housing 42, the user can use their fingers or nails to grip the disassembly portion 5328 and pull it outward to remove the blade maintenance assembly 5.

[0107] Both the latching protrusion 5327 and the disassembly portion 5328 can be disposed on the second housing 532. The latching protrusion 5327 is formed on the surface opposite to the first surface 5311. The disassembly portion 5328 is disposed at the junction of the first surface 5311 and the third surface 5322 or the fourth surface 5323.

[0108] In this embodiment, the mounting housing 53 can be made of a deformable material, such as plastic. When installing the blade maintenance assembly 5 onto the blade housing 42, the blade maintenance assembly 5 is pushed into the second opening 422. The locking protrusion 5327 is deformed by the compression of the inner wall of the second opening 422 of the blade housing 42. When the locking protrusion 5327 is aligned with the locking groove 423 on the blade housing 42, the locking protrusion 5327 is engaged in the locking groove 423, completing the installation of the blade maintenance assembly 5. When removing the blade maintenance assembly 5 from the blade housing 42, the removal part 5328 is held in place and pulled outward. The entire blade maintenance assembly 5 is subjected to an outward force, and the locking protrusion 5327 is deformed by compression, disengaging from the locking groove 423, thereby removing the blade maintenance assembly 5.

[0109] The blade assembly 4 also includes a blade holder 43 corresponding to the blade 41. The blade holder 43 extends outward from the blade housing 42 through the second opening 422, and is bent in the direction of the blade housing 42. The blade holder 43 can be used to hold the workpiece to be sheared.

[0110] In this embodiment, the blade holder 43 and the blade housing 42 can be integrally formed, and the blade holder 43 extends outward from the front end of the blade housing 42.

[0111] Specifically, such as Figure 8 and Figure 9As shown, the blade housing 42 includes a first blade housing 424 and a second blade housing 425, which can be fastened together and secured with screws. The front ends of the first blade housing 424 and the second blade housing 425 respectively form a first mounting portion 4241 and a second mounting portion 4251. After the first blade housing 424 and the second blade housing 425 are fastened together, the first mounting portion 4241 and the second mounting portion 4251 substantially close the front end of the blade housing 42, and a second opening 422 is formed between the first mounting portion 4241 and the second mounting portion 4251 for mounting the blade maintenance assembly 5. When the blade housing 42 is substantially cylindrical, after the first blade housing 424 and the second blade housing 425 are fastened together, the first mounting portion 4241 and the second mounting portion 4251 are substantially circular, thus closing the front end of the blade housing 42.

[0112] The second mounting portion 4251 extends into the blade housing 42 to form a mounting plate 4252. The shape and size of the mounting plate 4252 are adapted to the shape and size of the second housing 532, and the slot 423 is formed on the mounting plate 4252 corresponding to the slot protrusion 5327 on the second housing 532. When the blade maintenance assembly 5 is installed to the second opening 422, the slot protrusion 5327 on the second housing 532 is engaged in the slot 423 on the mounting plate 4252, and the disassembly portion 5328 on the second housing 532 contacts the second mounting portion 4251 and the mounting plate 4252.

[0113] The blade holder 43 may include a first blade holder 431 and a second blade holder 432. The first blade holder 431 extends outward from the first mounting portion 4241, and the second blade holder 432 extends outward from the second mounting portion 4251. Both the first blade holder 431 and the second blade holder 432 are bent in the direction of the blade housing 42. The first blade holder 431 and the second blade holder 432 are identical in shape and size, and are symmetrical about the axis of the blade housing 42.

[0114] It is understandable that housing 1 can also be composed of two detachable housings for easy installation.

[0115] Please refer to it again. Figure 1 and Figure 2The drive assembly 2 may include a motor (not shown in the figure), and the transmission assembly 3 may include a fixed base 31, a lead screw 32, a connecting member 33, and a spring 34. The motor is connected to the lead screw 32, the fixed base 31 is mounted on the blade housing 42, and the lead screw 32 is connected to the motor via the fixed base 31. The lead screw 32 is threadedly connected to the connecting member 33, which connects one end of the blade 41 and one end of the spring 34. The other end of the spring 34 is connected to the fixed base 31. When the shearing tool 100 is working, the motor drives the lead screw 32 to rotate, and the connecting member 33 moves longitudinally along the lead screw 32, thereby driving the blade 41 to reciprocate longitudinally along the housing 1, causing the blade 41 to extend from the flexible channel 51 to the outside of the housing 1 and retract from the outside of the housing 1 into the flexible channel 51. When the blade 41 retracts from the outside of the housing 1, the motor drives the lead screw 32 to rotate, causing the connecting member 33 to move toward the rear end of the housing 1, and the spring 34 to compress. When the blade 41 extends outside the housing 1, the motor drives the lead screw 32 to rotate, causing the connector 33 to move toward the front end of the housing 1, and the spring 34 to stretch.

[0116] Of course, in this embodiment, the specific structure of the drive component 2 and the transmission component 3 is not limited to this, and they can also be composed of other devices and apparatuses that can drive the blade 41 to reciprocate.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A shearing tool characterized by, It includes a housing, a drive assembly, a transmission assembly, a blade assembly, and a blade maintenance assembly; the drive assembly and the transmission assembly are installed inside the housing, the drive assembly is connected to the transmission assembly, and the front end of the housing has an installation opening for the blade assembly to move freely; The blade assembly includes a blade connected to the front end of the transmission assembly; The blade maintenance assembly is disposed in the mounting opening, and the blade maintenance assembly forms a flexible channel for the blade to pass through; The drive assembly drives the transmission assembly to move and causes the blade to reciprocate relative to the blade maintenance assembly, so that the blade extends from the flexible channel to the outside of the housing and retracts from the outside of the housing into the flexible channel. As the blade moves and passes through the flexible channel, the blade maintenance assembly at least partially contacts the blade.

2. The shearing tool of claim 1, wherein, The blade maintenance assembly includes a liquid reservoir with a protective liquid; wherein the flexible channel is formed in the liquid reservoir, and the liquid reservoir contacts the blade when the blade moves and passes through the flexible channel.

3. The cutting tool as described in claim 2, characterized in that, The liquid storage component has liquid absorption capacity and elasticity. The liquid storage component includes a first liquid storage element and a second liquid storage element, and the flexible channel is formed between the first liquid storage element and the second liquid storage element.

4. The cutting tool as described in claim 3, characterized in that, The first liquid storage element includes a first contact surface that contacts one side of the blade, and the second liquid storage element includes a second contact surface that contacts the other side of the blade. The first contact surface and the second contact surface are disposed opposite to each other. The first contact surface near the rear end of the transmission assembly and the second contact surface near the rear end of the transmission assembly are parallel and spaced apart. The front ends of the first contact surface and the front ends of the second contact surface are respectively formed with inclined surfaces. When the blade is retracted into the housing, the inclined surfaces formed by the first contact surface and the second contact surface are tightly fitted together. When the blade extends out of the housing from the flexible channel, the inclined surfaces formed by the first contact surface and the second contact surface are separated by the blade.

5. The cutting tool as described in claim 4, characterized in that, After the blade is retracted into the housing, the angle between the inclined surfaces formed by the first contact surface and the second contact surface in the fit state is less than or equal to the blade's cutting angle.

6. The cutting tool as described in claim 4, characterized in that, The distance between the rear ends of the first contact surface and the rear ends of the second contact surface is less than the thickness of the blade.

7. The cutting tool as described in claim 1, characterized in that, When the tip of the blade does not extend from the flexible channel, the flexible channel is at least partially closed.

8. The cutting tool as described in any one of claims 2 to 7, characterized in that, The blade maintenance assembly also includes a mounting housing detachably connected to the mounting opening; the mounting housing forms a mounting space for mounting the liquid reservoir, the mounting space being located on the inner side of the mounting housing near the blade.

9. The cutting tool as described in claim 8, characterized in that, The mounting housing includes a first housing for accommodating the first liquid storage element and a second housing for accommodating the second liquid storage element. The inner circumferential shape and size of the first housing are adapted to the shape and size of the first liquid storage element; the inner circumferential shape and size of the second housing are adapted to the shape and size of the second liquid storage element; the first housing is connected to the second housing via a sliding groove structure.

10. The cutting tool as described in claim 8, characterized in that, The blade assembly further includes a blade housing, which is mounted on the front end of the housing. The blade and the transmission assembly are disposed inside the blade housing. A first opening and a second opening are formed at both ends of the blade housing, and the transmission assembly is connected to the drive assembly through the first opening. The second opening is located at the mounting opening, the mounting housing of the blade maintenance assembly is detachably mounted to the second opening and the blade maintenance assembly closes the second opening, and the blade housing and the blade maintenance assembly together close the mounting opening.

11. The cutting tool as described in claim 10, characterized in that, The mounting housing has a locking protrusion and a disassembly portion. The blade housing has a locking groove at the second opening corresponding to the locking protrusion. The disassembly portion is located on the outside of the mounting housing away from the blade. When the blade maintenance assembly is installed onto the blade housing, the locking protrusion engages in the locking groove, and the disassembly portion contacts the blade housing.

12. The cutting tool as described in claim 10, characterized in that, The blade assembly also includes a blade holder corresponding to the blade, the blade holder extending outward from the blade housing from the second opening, and the blade holder bending in the direction of the blade housing.

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