Shearing device

Abstract

The application provides a shearing device, relates to the technical field of cutting, and comprises a first shell, a connecting assembly and a cutter assembly which are sequentially connected. The first shell has an accommodating space in the interior. An inlet channel is formed between the first shell and the connecting assembly. The accommodating space and the inlet channel are communicated. The interior of the connecting assembly has a cutter channel. The extension direction of the cutter channel intersects and communicates with the extension direction of the inlet channel. When the cutter assembly abuts the to-be-cut fiber bundle body against the abutting block, the abutting block is subjected to pressure and compresses the elastic force part, so that the second end of the abutting block rotates away from the cutter assembly, the hard contact between the cutter assembly and the abutting block is effectively avoided, the problem that the cutter is damaged is avoided, and the service life of the cutter is prolonged.

Description

Technical Field

[0001] This invention relates to the field of cutting technology, and in particular to a cutting device. Background Technology

[0002] In the modern aerospace industry, the application of composite materials has become one of the important means to improve aircraft performance. Compared with traditional metal materials, composite materials have a higher strength-to-weight ratio, better corrosion resistance and fatigue performance, as well as better thermal expansion characteristics. Therefore, they are widely used in aircraft structures, such as fuselages, wings, and tail sections. Automated fiber placement (AFP), as a highly efficient and precise composite material molding method, is gradually becoming a mainstream technology in the aerospace manufacturing industry.

[0003] In existing cutting structures, the filament body is located between the baffle and the cutter. The cutter presses the filament body onto the baffle and cuts it. Because there is hard contact between the baffle and the cutter, the cutter is easily damaged, reducing its service life.

[0004] Therefore, the aforementioned technical issues still need further resolution. Summary of the Invention

[0005] The purpose of this invention is to provide a shearing device to alleviate the technical problems existing in the aforementioned related technologies.

[0006] This invention provides a shearing device, comprising:

[0007] The assembly consists of a first housing, a connecting component, and a cutting component connected in sequence. The first housing has an internal accommodating space, and a feeding channel is formed between the first housing and the connecting component. The accommodating space is connected to the feeding channel. The connecting component has an internal cutting channel, and the extending direction of the cutting channel intersects and is connected to the extending direction of the feeding channel. The connecting component is used to connect with the filament laying head frame body, and the feeding channel is used for the filament bundle body to be cut to pass through.

[0008] An abutting block having a first end and a second end facing away from each other, the first end being rotatably connected to the receiving space;

[0009] The elastic part has one end connected to the receiving space and the other end connected to the second end of the abutment block. The elastic part is used to provide a rebound force to the abutment block.

[0010] The cutting assembly can pass through the cutting channel and the feeding channel in sequence, and push the filament body to be cut against the abutting block in the accommodating space. The second end of the abutting block compresses the elastic part to cut the filament body to be cut.

[0011] The purpose of this application and the technical problems to be solved can also be further achieved by the following technical measures.

[0012] Optionally, in the aforementioned shearing device, the cutter assembly includes:

[0013] A cutting blade and a cylinder are connected in sequence, the cutting blade being located inside the cutting blade channel, and the cylinder being connected to a connecting assembly;

[0014] The cutting blade, with its cutting end facing away from the cylinder, presses the filament body to be cut against the abutting block within the accommodating space.

[0015] Optionally, in the aforementioned shearing device, the cutting end is beveled.

[0016] Optionally, in the aforementioned shearing device, the connecting component includes:

[0017] The second housing has a U-shaped cross-section along the first direction and has a first side and a second side facing away from each other along the first direction, the first direction being the direction from the first housing to the cutter assembly;

[0018] The first side is connected to the cylinder so that the cutting blade extends into the interior of the second housing. The first housing has a groove on the side opposite to the second housing, and the groove is recessed toward the other side of the first housing away from the first side. The second side is connected to the first side to form the feeding channel. The hollow portion between the first side and the second side forms the cutting channel.

[0019] Optionally, the aforementioned shearing device, wherein the connecting assembly further includes:

[0020] At least one partition is disposed within the cutting channel and divides the cutting channel into two sub-channels arranged side by side along a second direction, for each of the cutting blades to pass through simultaneously.

[0021] The number of sub-channels, the number of cutting blades, the number of feeding channels, the number of abutment blocks, and the number of elastic parts are all adapted to the number of the filament bundle bodies to be cut, and correspond one-to-one.

[0022] Optionally, the aforementioned shearing device, wherein the connecting assembly further includes:

[0023] At least two lower plates, the number of which is adapted to the number of the sub-channels and corresponds one-to-one, each lower plate is disposed in the corresponding sub-channel, and each lower plate is located below the corresponding cutting blade;

[0024] Each of the sub-channels is provided with a limiting groove, each limiting groove is located below the corresponding cutting blade, and each limiting groove is equipped with a corresponding lower plate.

[0025] The upper plate has at least two first protrusions, the number of which is matched with the number of sub-channels and corresponds one-to-one. The upper plate is disposed on the second housing and the corresponding sub-channels are covered by the first protrusions.

[0026] Optionally, in the aforementioned cutting device, each of the lower plates has a second protrusion on one side of the corresponding first protrusion, and each second protrusion is located below the corresponding cutting blade;

[0027] Each of the first protrusions and its corresponding second protrusions is close to the cutting blade in the corresponding sub-channel and is in contact with the corresponding side of the cutting blade.

[0028] Optionally, in the aforementioned shearing device, each of the first protrusions and the corresponding second protrusions has a plurality of mounting holes on the side opposite to each second protrusion and the corresponding first protrusion, and each mounting hole contains graphite.

[0029] Optionally, the aforementioned shearing device, wherein the connecting assembly further includes:

[0030] A baffle is disposed on the first side of the second housing, and the baffle is located between the second housing and the cylinder. A guide hole is provided on the baffle, and the guide hole is connected to the cutter channel.

[0031] Optionally, the aforementioned shearing device, wherein the connecting assembly further includes:

[0032] An adapter plate is disposed on the second housing and close to the second side of the second housing;

[0033] A button locking device is provided on the adapter plate, and the button locking device is used for detachable connection with the filament laying head frame body.

[0034] By employing the above technical solution, the shearing device of this application has at least the following advantages:

[0035] The shearing device provided in this application embodiment has the following characteristics: when the cutter assembly presses the wire bundle body to be cut against the abutting block, the abutting block is subjected to pressure and the elastic part is compressed, so that the second end of the abutting block rotates away from the location of the cutter assembly. This can effectively avoid hard contact between the cutter assembly and the abutting block, avoid damage to the cutter, and extend the service life of the cutter. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a first-view structural schematic diagram of the shearing device provided in an embodiment of the present invention;

[0038] Figure 2 This is a second-view structural schematic diagram of the shearing device provided in an embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of the cutter assembly of the shearing device provided in an embodiment of the present invention;

[0040] Figure 4 A first-view structural schematic diagram of the connecting assembly of the shearing device provided in an embodiment of the present invention;

[0041] Figure 5 This is a second-view structural schematic diagram of the connecting assembly of the shearing device provided in an embodiment of the present invention;

[0042] Figure 6 This is a schematic diagram of the structure of the lower plate of the shearing device provided in an embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram of the upper plate of the shearing device provided in an embodiment of the present invention.

[0044] icon:

[0045] 1. First housing; 2. Connecting assembly; 201. Second housing; 202. Partition; 203. Sub-channel; 204. Lower plate; 205. Second protrusion; 206. Limiting groove; 207. Upper plate; 208. First protrusion; 209. Graphite; 210. Baffle; 211. Guide hole; 3. Cutting assembly; 31. Cutting blade; 32. Cylinder; 4. Accommodation space; 5. Abutting block; 6. Elastic part; 7. Adapter plate; 8. Button lock; 9. Feed channel. Detailed Implementation

[0046] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] Example

[0050] like Figures 1-5 As shown, the shearing device proposed in the embodiments of the present invention includes:

[0051] The first housing 1, the connecting assembly 2, and the cutting assembly 3 are connected in sequence. The first housing 1 has an internal accommodating space 4. A feeding channel 9 is formed between the first housing 1 and the connecting assembly 2. The accommodating space 4 is connected to the feeding channel 9. The connecting assembly 2 has an internal cutting channel. The extending direction of the cutting channel intersects with and is connected to the extending direction of the feeding channel 9. The connecting assembly 2 is used to connect with the filament laying head frame body. The feeding channel 9 is used for the filament bundle body to be cut to pass through.

[0052] Abutting block 5, the abutting block 5 having a first end and a second end facing away from each other, the first end being rotatably connected to the receiving space 4;

[0053] The elastic part 6 has one end connected to the receiving space 4 and the other end connected to the second end of the abutment block 5. The elastic part 6 is used to provide a rebound force to the abutment block 5.

[0054] The cutting assembly 3 can pass through the cutting channel and the feeding channel 9 in sequence, and abut the filament body to be cut against the abutting block 5 in the accommodating space 4. The second end of the abutting block 5 compresses the elastic part 6 to cut the filament body to be cut.

[0055] Specifically, the accommodating space 4 is connected to the feeding channel 9. The accommodating space 4 is used to accommodate the abutting block 5 and the elastic part 6. The side of the accommodating space 4 opposite to the feeding channel 9 is connected to the feeding channel 9. The feeding channel 9 is formed between the first housing 1 and the connecting assembly 2. The feeding channel 9 is used for the filament body to pass through. A cutting channel is formed inside the connecting assembly 2. The cutting channel is used for the cutting assembly 3 to pass through, so that the cutting assembly 3 passes through the cutting channel and abuts the filament body to be cut in the feeding channel 9 against the abutting block 5, so as to achieve the effect of cutting the filament body to be cut.

[0056] When the cutter assembly 3 presses the wire bundle body to be cut against the abutment block 5, the abutment block 5 is subjected to pressure and the elastic part 6 is compressed, so that the second end of the abutment block 5 rotates away from the location of the cutter assembly 3. This can effectively prevent the cutter assembly 3 from making hard contact with the abutment block 5, avoid damage to the cutter, and extend the service life of the cutter.

[0057] After the cutter assembly 3 completes the cutting action, the cutter assembly 3 releases its abutment effect with the abutment block 5. Under the action of elastic potential energy, the elastic part 6 pushes the abutment block 5 to reset, so that the cutter assembly 3 can cooperate with the abutment block 5 to perform the next cutting process on the filament body to be cut.

[0058] It should be noted that the feed channel 9 and the cutter channel can be perpendicular to each other or have a certain angle. The angle can be acute or obtuse, as long as the feed channel 9 and the cutter channel intersect. Since the feed channel 9 and the cutter channel intersect and connect, the cutter assembly 3 can pass through the cutter channel and push the wire bundle body to be cut in the feed channel 9 against the abutment block 5 to achieve the effect of cutting the wire bundle body.

[0059] The elastic part 6 includes a spring, one end of which is connected to the side of the receiving space 4 away from the feed channel 9, and the other end of which is connected to the second end of the abutment block 5. The spring is used to provide a restoring force to the abutment block 5.

[0060] like Figures 1-3 As shown, in a specific implementation, the cutter assembly 3 includes:

[0061] A cutting blade 31 and a cylinder 32 are connected in sequence. The cutting blade 31 is located inside the cutting blade channel, and the cylinder 32 is connected to the connecting assembly 2.

[0062] The cutting blade 31, with its cutting end facing away from the cylinder 32, presses the filament body to be cut against the abutting block 5 within the accommodating space 4.

[0063] Specifically, this application provides an embodiment of a cutter assembly 3, which includes a cutting blade 31 and a cylinder 32 connected in sequence. The telescopic end of the cylinder 32 is connected to the cutting blade 31. The cutting end of the cutting blade 31, away from the cutting end of the cylinder 32, pushes the filament body to be cut against the abutment block 5 in the receiving space 4. The cylinder 32 is connected to the connecting assembly 2 so that the cutting blade 31 is located in the cutting channel and on the side of the cutting channel away from the receiving space 4. The cylinder 32 can drive the cutting blade 31 to perform stretching or contraction movements so that the cutting blade 31 reciprocates within the cutting channel.

[0064] It should be noted that there is a certain gap between the telescopic end of cylinder 32 and the interior of cylinder 32. This structural design can avoid the problem of excessive running resistance of cutting blade 31 when there is a slight deviation in the axial direction between the cutting channel and the telescopic end of cylinder 32.

[0065] like Figure 3 As shown, in a specific implementation, the cutting end is beveled.

[0066] Specifically, this structural design facilitates the cutting blade 31 in cutting the filament body to be cut, thereby improving the cutting efficiency of the cutting blade 31 in cutting the filament body.

[0067] like Figure 2 and Figures 4-5 As shown, in a specific implementation, the connection component 2 includes:

[0068] The second housing 201 has a U-shaped cross-section along the first direction and has a first side and a second side facing away from each other along the first direction. The first direction is the direction from the first housing 1 to the cutter assembly 3.

[0069] The first side is connected to the cylinder 32 so that the cutting blade 31 extends into the interior of the second housing 201. The first housing 1 has a groove on the side opposite to the second housing 201. The groove is recessed toward the other side of the first housing 1 away from the first side. The second side is connected to the first side to form the feed channel 9. The hollow portion between the first side and the second side forms the cutting channel.

[0070] Specifically, this application provides an embodiment of a connecting component 2, wherein the connecting component 2 includes a second housing 201, the second housing 201 having a U-shaped cross-section along a first direction, and the first direction being as shown in the figure. Figure 2 The direction from the first housing 1 to the cutter assembly 3 shown is horizontal. The second housing 201 has a first side and a second side opposite to each other along the first direction. The first side is detachably connected to the first housing 1 by bolts, and the second side is detachably connected to the cylinder 32 by bolts. The cutter 31 extends into the second housing 201 through the second side and is close to the second side.

[0071] The first housing 1 has a groove on one side opposite to the second housing 201. The groove is recessed on the other side of the first housing 1 away from one side. When the first housing 1 and the second housing 201 are connected, the groove forms a feeding channel 9. Figure 2 As shown, the filament body to be cut enters from above or below and exits from below or above. The cylinder 32 can drive the cutting blade 31 through the first side and push the filament body to be cut through the groove against the abutting block 5 in the receiving space 4 to achieve the effect of cutting the filament body.

[0072] like Figures 4-5 As shown, in a specific implementation, the connection component 2 further includes:

[0073] At least one partition 202 is disposed in the cutter channel and divides the cutter channel into two sub-channels 203 arranged side by side along the second direction, for each of the cutter 31 to pass through simultaneously.

[0074] The number of sub-channels 203, the number of cutting blades 31, the number of feeding channels 9, the number of abutting blocks 5, and the number of elastic parts 6 are all adapted to the number of the filament bundle bodies to be cut, and correspond one-to-one.

[0075] Specifically, in order to enable the device to cut multiple filament bundles simultaneously and improve the cutting efficiency, this application provides at least one partition 202 within the second housing 201, dividing the second housing 201 into two sub-channels 203 arranged side-by-side along a second direction, each for simultaneously passing through a cutting blade 31. The second direction is as follows: Figure 2 The horizontal direction shown in the figure, wherein if the first direction is the X-axis direction of a plane, then the second direction is the Y-axis direction of the plane, and the first direction and the second direction are perpendicular to each other in the plane. If there are at least two partitions 202, then the partitions 202 are arranged at intervals along the second direction in the second housing 201, and divide the second housing 201 into three sub-channels 203 arranged in parallel along the second direction, for each of them to pass through a cutting blade 31 at the same time.

[0076] It should be noted that a cylinder 32 has multiple telescopic ends, each telescopic end is connected to a cutting blade 31, each cutting blade 31 is located in a corresponding sub-channel 203, and each cutting blade 31 can push the filament body to be cut in the corresponding feed channel 9 against the corresponding abutment block 5 to achieve the effect of cutting the filament body to be cut. Those skilled in the art can select the number of sub-channels 203, cutting blades 31, feed channels 9, abutment blocks 5 and elastic parts 6 according to actual needs, and this application does not limit it.

[0077] The partition 202 and the second outer shell can be manufactured into an integral structure by integral casting, or they can be connected in a detachable manner as a separate structure.

[0078] like Figure 2 and Figures 4-7 As shown, in a specific implementation, the connection component 2 further includes:

[0079] At least two lower plates 204, the number of lower plates 204 being adapted to the number of sub-channels 203 and corresponding one-to-one, each lower plate 204 being disposed in the corresponding sub-channel 203, and each lower plate 204 being located below the corresponding cutting blade 31;

[0080] Each of the sub-channels 203 has a limiting groove 206, each limiting groove 206 is located below the corresponding cutting blade 31, and each limiting groove 206 has a corresponding lower plate 204 installed in it.

[0081] The upper plate 207 is provided with at least two first protrusions 208. The number of the first protrusions 208 is adapted to the number of the sub-channels 203 and corresponds one-to-one. The upper plate 207 is disposed on the second housing 201 and the corresponding sub-channels 203 are covered by the first protrusions 208.

[0082] Specifically, the lower plate 204 is embedded in the corresponding limiting groove 206 to reduce the space in the corresponding sub-channel 203. The upper plate 207, in conjunction with the first protrusion 208, can further reduce the space in the corresponding sub-channel 203. This structural design ensures that the cutting blade 31 in each sub-channel 203 can reciprocate along a specific travel path, avoiding the cutting blade 31 from deviating from its path when traveling in the corresponding sub-channel 203, which would affect the cutting efficiency of cutting the filament body to be cut.

[0083] The upper plate 207 and the second housing 201 are detachably connected by bolts, and the upper plate 207 and the first protrusion 208 are integrally formed by casting.

[0084] like Figure 2 and Figures 4-7 As shown, in a specific implementation, each of the lower plates 204 and the corresponding first protrusion 208 has a second protrusion 205 on one side, and each second protrusion 205 is located below the corresponding cutting blade 31.

[0085] Each of the first protrusions 208 and the corresponding second protrusions 205 is close to the cutting blade 31 in the corresponding sub-channel 203 and is in contact with the corresponding side of the cutting blade 31.

[0086] Specifically, the first protrusion 208 cooperates with the corresponding second protrusion 205 to further reduce the space within the corresponding sub-channel 203, so as to ensure that the cutting blade 31 in each sub-channel 203 can move back and forth along a specific travel path, avoiding the cutting blade 31 from deviating from its path when traveling in the corresponding sub-channel 203, thereby affecting the cutting efficiency of cutting the filament body to be cut.

[0087] The second protrusion 205 and the lower plate 204 are integrally formed by casting.

[0088] like Figure 4 and Figures 6-7 As shown, in a specific implementation, each of the first protrusions 208 and the corresponding second protrusion 205 has multiple mounting holes on the side opposite to each second protrusion 205 and the corresponding first protrusion 208, and each mounting hole contains a graphite 209.

[0089] Specifically, this structural design facilitates the reduction of resistance generated when the cutting blade 31 travels within the corresponding sub-channel 203.

[0090] like Figure 4 As shown, in a specific implementation, the connection component 2 further includes:

[0091] A baffle 210 is disposed on the first side of the second housing 201. The baffle 210 is located between the second housing 201 and the cylinder 32. A guide hole 211 is provided on the baffle 210, and the guide hole 211 is connected to the cutter channel.

[0092] Specifically, the baffle 210 is detachably connected to the first side by bolts. The guide hole 211 can facilitate the limiting of the corresponding cutting blade 31 in the sub-channel 203, so as to avoid the cutting blade 31 from deviating from its path when it travels in the corresponding sub-channel 203, thereby affecting the cutting efficiency of cutting the filament body to be cut.

[0093] like Figure 1 As shown, in a specific implementation, the connection component 2 further includes:

[0094] The adapter plate 7 is disposed on the second housing 201 and close to the second side of the second housing 201;

[0095] A button locking device 8 is disposed on the adapter plate 7, and the button locking device 8 is used to detachably connect to the filament laying head frame body.

[0096] Specifically, the adapter plate 7 is detachably connected to the second housing 201 by bolts. The button lock 8 is a mechanical device mainly used to replace traditional bolts for quick locking operations. It achieves locking and unlocking through button operation without tools, thereby improving work efficiency and is especially suitable for occasions requiring frequent assembly and disassembly.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shearing device, characterized by, The cutting device comprises: a first shell, a connecting assembly and a cutter assembly connected in sequence, an accommodation space is formed in the first shell, a feeding channel is formed between the first shell and the connecting assembly, the accommodation space is communicated with the feeding channel, the connecting assembly has a cutter channel in the interior, the extension direction of the cutter channel intersects and communicates with the extension direction of the feeding channel, the connecting assembly is used for connecting with a fiber placement head frame body, and the feeding channel is used for allowing a to-be-cut fiber body to pass through; an abutting block, the abutting block has a first end and a second end opposite to each other, the first end is rotationally connected with the accommodation space; a resilient part, one end of the resilient part is connected with the accommodation space, the other end of the resilient part is connected with the second end of the abutting block, and the resilient part is used for providing a resilient force for the abutting block; wherein the cutter assembly can pass through the cutter channel and the feeding channel in sequence, and abut the to-be-cut fiber body on the abutting block in the accommodation space, and the second end of the abutting block compresses the resilient part to cut the to-be-cut fiber body; the connecting assembly comprises a second shell, the second shell has a U-shaped cross section along a first direction, the second shell has a first side and a second side opposite to each other along the first direction, the first direction is a direction from the first shell to the cutter assembly, the first side is connected with a cylinder of the cutter assembly, so that a cutting knife of the cutter assembly extends into the interior of the second shell, the second side is connected with a side of the first shell to form the feeding channel, and a hollow part between the first side and the second side forms the cutter channel; the to-be-cut fiber body passes in from above or below and passes out from below or above, the feeding channel is arranged to be inclined, and is arranged to have an included angle with the cutter channel; the connecting assembly further comprises at least one partition plate arranged in the cutter channel and separating the cutter channel into at least two sub-channels, at least two lower plates corresponding to the sub-channels, and an upper plate provided with at least two first protrusions, each first protrusion corresponding to each sub-channel, each lower plate has a second protrusion, each first protrusion and each second protrusion are arranged on the upper and lower corresponding sides of the cutting knife in each sub-channel, and the opposite surfaces of each first protrusion and each second protrusion are provided with a plurality of accommodation holes, and graphite is arranged in each accommodation hole.

2. The shearing device of claim 1, wherein The cutter assembly comprises: the cutting knife and the cylinder connected in sequence, the cutting knife is located in the interior of the cutter channel, and the cylinder is connected with the connecting assembly; wherein the cutting end of the cutting knife away from the cylinder abuts the to-be-cut fiber body on the abutting block in the accommodation space.

3. The cutting device according to claim 2, wherein the cutting end is obliquely notched.

4. The cutting device according to claim 2, wherein The first shell has a groove on the side opposite to the second shell, and the groove is recessed towards the other side of the first shell.

5. The shearing device according to claim 4, characterized in that, The partition plate is arranged in the cutter channel and separates the cutter channel into at least two sub-channels arranged side by side in the second direction, for simultaneously passing through one of the cutting knives respectively; The number of the sub-channels, the number of the cutting knives, the number of the feeding channels, the number of the abutting blocks and the number of the elastic parts are adapted to the number of the to-be-cut fiber bodies and correspond one by one.

6. The shearing device according to claim 5, characterized in that, The number of the lower plates is adapted to the number of the sub-channels and corresponds one by one, each of the lower plates is arranged in the corresponding sub-channel, and each of the lower plates is located below the corresponding cutting knife; Each of the sub-channels is provided with a limiting groove, each of the limiting grooves is located below the corresponding cutting knife, and each of the limiting grooves is provided with the corresponding lower plate; The number of the first protrusions is adapted to the number of the sub-channels and corresponds one by one, and the upper plate is arranged on the second shell and covers the corresponding sub-channel through the first protrusion.

7. The shearing device of claim 4, wherein, The connecting assembly further comprises: A baffle is arranged on the first side of the second shell, the baffle is located between the second shell and the air cylinder, the baffle is provided with a guide hole, and the guide hole is in communication with the cutter channel.

8. The shearing device of claim 4, wherein, The connecting assembly further comprises: An adapter plate is arranged on the second shell and close to the second side of the second shell; A button locker is arranged on the adapter plate, and the button locker is used for detachable connection with the fiber placement head frame body.

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