Adjustable slitting knife and adjustable slitting device

Abstract

The utility model discloses an adjustable slitting knife and an adjustable slitting device, and the adjustable slitting knife comprises a fixed pipe which is through along a first direction, a sliding cavity is arranged in the fixed pipe, and a first opening is formed at one end of the fixed pipe in the first direction; the slitting piece is arranged in the sliding cavity in a sliding mode in the first direction and provided with a slitting part; the slitting part is suitable for stretching out or retracting from the first opening; the adjusting assembly comprises a fixed sleeve and an adjusting screw rod; the fixed sleeve is fixedly connected to the fixed pipe; the adjusting screw rod is in threaded fit with the fixing sleeve in the first direction, abuts against the slitting piece in the first direction in a matched mode, and is suitable for adjusting the position relative to the fixing sleeve and driving the slitting piece to adjust the position relative to the fixing sleeve; and the elastic piece acts on the fixing pipe and the slitting piece in the first direction and is used for applying force to the slitting piece so that the slitting piece can be kept in abutting fit with the adjusting screw rod. The adjustable slitting knife can be used for conveniently adjusting the slitting thickness.

Description

TECHNICAL FIELD

[0001] The utility model relates to a slitting device technical field, concretely relates to an adjustable slitting cutter and adjustable slitting device. BACKGROUND

[0002] When cutting thin film material, a slitting device needs to be used. The slitting device is generally fixed on a crossbar, the crossbar spans a machine table, the thin film material is conveyed on the machine table along a preset direction, and during the conveying of the thin film material, the blade of the slitting device will pass through the thin film material, so that the thin film material is slit by the slitting device. However, the existing slitting device is fixed on the crossbar, if the slitting thickness of the slitting device needs to be adjusted, the height position of the crossbar needs to be adjusted or the height position of the slitting device on the crossbar needs to be adjusted, the adjustment process is complex, which is not conducive to improving the production efficiency. SUMMARY

[0003] The utility model discloses a slitting cutter and slitting device, which can conveniently adjust the slitting thickness.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] Technical scheme one: an adjustable slitting cutter, comprising: a fixed tube, which is through in a first direction, has a sliding cavity inside, and forms a first opening at one end in the first direction; a slitting part, which is slidably arranged in the sliding cavity in the first direction and is provided with a slitting part; the slitting part is adapted to extend out of or retract into the first opening; an adjusting assembly, comprising a fixed sleeve and an adjusting screw; the fixed sleeve is fixedly connected to the fixed tube; the adjusting screw is threadedly connected to the fixed sleeve in the first direction and is abuttingly connected to the slitting part in the first direction, which is adapted to adjust the position of the slitting part relative to the fixed tube; and an elastic member, which acts on the fixed tube and the slitting part in the first direction and is used to apply force to the slitting part to keep it in abutting connection with the adjusting screw.

[0006] Technical scheme two based on technical scheme one: the adjusting assembly comprises a distance measuring sleeve; the distance measuring sleeve is rotatably sleeved outside the fixed sleeve and is fixedly connected with the adjusting screw; the outer wall of the fixed sleeve is provided with a first scale arranged in the first direction, and the outer wall of the distance measuring sleeve is provided with a second scale arranged around the rotation axis of the distance measuring sleeve; the first scale and the second scale are used to cooperate to determine the extension length of the adjusting screw relative to the fixed sleeve.

[0007] Based on the technical solution one, the third technical solution is that a first abutting part is arranged on the inner wall of the sliding cavity of the fixed tube; a second abutting part is arranged on the outer wall of the cutting part; and the elastic part is a spring, which is sleeved on the cutting part along the first direction and has two ends abutting on the first abutting part and the second abutting part along the first direction.

[0008] Based on the technical solution one, the fourth technical solution is that the adjusting assembly further comprises a locking screw, which is screwed on the fixed sleeve along a second direction perpendicular to the first direction, penetrates the side wall of the fixed sleeve and is adapted to abut on the adjusting screw to lock it.

[0009] Based on the technical solution one, the fifth technical solution is that the cutting part comprises a clamp and a blade; the clamp is provided with a clamping groove; and the blade is inserted into and fixed in the clamping groove to form the cutting part.

[0010] Based on the fifth technical solution, the sixth technical solution is that the clamp is provided with a clamping seat and two clamping arms; the two clamping arms are arranged on the clamping seat and extend along the first direction, and the gap between the two clamping arms forms the clamping groove.

[0011] Based on the sixth technical solution, the seventh technical solution is that the cutting part further comprises a fastening screw, which is screwed on the two clamping arms along a second direction perpendicular to the first direction, so that the two clamping arms abut on each other and clamp and fix the blade.

[0012] Based on the seventh technical solution, the eighth technical solution is that the blade is provided with a locking hole corresponding to the position of the fastening screw, and the fastening screw penetrates the locking hole.

[0013] In addition, the utility model further provides a ninth technical solution, that is, an adjustable cutting device, which comprises a mounting horizontal rod and the adjustable cutting knife according to any one of the first to eighth technical solutions; the adjustable cutting knife is arranged on the mounting horizontal rod and is adapted to adjust the position of the adjustable cutting knife on the mounting horizontal rod along the extension direction of the mounting horizontal rod.

[0014] From the above description of the utility model, the utility model has the following beneficial effects compared with the prior art:

[0015] The technical scheme one provides an adjustable slitting cutter, which comprises a fixed tube, a slitting piece, an adjusting assembly and an elastic piece, the slitting piece is slidingly arranged in a sliding cavity of the fixed tube, a fixed sleeve of the adjusting assembly is fixedly connected with the fixed tube, an adjusting screw is screw-connected with the fixed sleeve and can be adjusted in position relative to the fixed sleeve by rotating, the adjusting screw abuts against the slitting piece, and the elastic piece acts on the fixed tube and the slitting piece at two ends, so that the slitting piece is kept stable by the action of the elastic piece when the position of the slitting piece relative to the fixed tube is adjusted by the pushing of the adjusting screw, and the slitting piece can be adjusted in position along with the adjusting screw regardless of the screwing in or screwing out of the adjusting screw; therefore, the adjustable slitting cutter can adjust the degree of the slitting part of the slitting piece extending out of the first opening of the fixed tube by rotating the adjusting screw, so that the slitting thickness of the slitting cutter is conveniently adjusted.

[0016] In the technical scheme two, a distance measuring sleeve is arranged, and a first scale is arranged on the fixed sleeve, a second scale is arranged on the distance measuring sleeve, and the two scales form a mechanism similar to a micrometer, so that the length of the adjusting screw extending out of the fixed sleeve can be measured by the cooperation of the first scale and the second scale, and the length of the slitting part of the slitting piece extending out of the fixed tube can be measured, so that the slitting thickness of the slitting cutter is conveniently controlled.

[0017] In the technical scheme three, a first abutting part is arranged in the fixed tube, a second abutting part is arranged on the slitting piece, and the elastic piece is a spring, the elastic piece is sleeved on the slitting piece and abuts against the two abutting parts at two ends, the elastic piece is not easy to be separated from the abutting cooperation with the fixed tube and the slitting piece, and the assembly of the fixed tube, the slitting piece and the elastic piece is facilitated.

[0018] In the technical scheme four, the locking bolt can lock the adjusting screw by abutting against the adjusting screw, so that the position of the slitting piece can be fixed after the slitting piece is adjusted to a suitable position, and the position of the slitting piece is prevented from changing due to the rotation of the adjusting screw.

[0019] In the technical scheme five, the slitting piece comprises a clamp and a blade, the blade can be inserted into and fixed in a clamping groove of the clamp, and the blade can be conveniently replaced to adapt to different slitting work requirements.

[0020] In the technical scheme six, the clamp is provided with a clamping seat and two clamping arms, the clamping groove is formed through the gap between the two clamping arms, and the assembly of the blade is facilitated.

[0021] In the technical scheme seven, the slitting piece is provided with a fastening bolt, the fastening bolt is screw-connected to the two clamping arms and pulls the two clamping arms close to each other to abut against each other, so that the blade is clamped and fixed, and the blade is prevented from shaking and shifting.

[0022] In the technical scheme eight, the blade is further provided with a locking hole, the fastening bolt can pass through the locking hole, and the blade is further prevented from falling off the clamp.

[0023] The ninth technical scheme provides an adjustable slitting device, which comprises a mounting crossbar and the adjustable slitting cutter. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical schemes of the embodiments of the present application, the drawings used in the embodiment description will be briefly introduced. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 The assembly state diagram of the adjustable slitting cutter related to the present application;

[0026] Figure 2 The structure diagram of the adjustable slitting cutter related to the present application Figure 1 ;

[0027] Figure 3 The structure diagram of the adjustable slitting cutter related to the present application Figure 2 ;

[0028] Figure 4 The structure diagram of the fixed tube in the adjustable slitting cutter related to the present application.

[0029] Main drawing mark explanation:

[0030] Fixed tube 10; sliding cavity 11; first opening 12; first abutting portion 13;

[0031] Slitting piece 20; clamp 21; clamping seat 211; clamping arm 212; blade 22; clamping groove 23; fastening bolt 24; second abutting portion 25; locking hole 26;

[0032] Adjusting assembly 30; fixed sleeve 31; adjusting screw 32; distance measuring sleeve 33; locking bolt 34;

[0033] Elastic member 40. DETAILED DESCRIPTION

[0034] The technical schemes in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are preferred embodiments of the present application, and should not be regarded as exclusion of other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] In the claims, the specification, and the drawings of the present application, terms such as "first", "second", and "third" are used merely to distinguish one object or implementation from another, and do not imply a particular order or sequence except where expressly recited herein.

[0036] In the claims, the specification, and the drawings of the present application, terms such as "central", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "back", "left", "right", "clockwise", "counterclockwise", and the like indicate directions or positional relationships based on the directions and positions shown in the drawings, and are used only to facilitate the description of the present application and the simplification of the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, so they cannot be understood as limiting the specific protection scope of the present application.

[0037] In the claims, the specification, and the drawings of the present application, terms such as "fixedly connected" or "fixedly connected" should be understood broadly, that is, any connection mode between the two without displacement relationship and relative rotation relationship, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.

[0038] In the claims, the specification, and the drawings of the present application, terms such as "including", "having" and their variants are intended to mean "including but not limited to".

[0039] The adjustable slitting cutter and the adjustable slitting device are disclosed in the embodiments of the present application. The adjustable slitting device comprises a mounting crossbar and the adjustable slitting cutter. The mounting crossbar in the adjustable slitting device can be fixedly installed on a slitting machine table of a film material, and span the film material in conveying. The adjustable slitting cutter can be fixedly installed on the mounting crossbar through a fastening structure such as a bolt, and can be adjusted in position on the mounting crossbar along the extension direction of the mounting crossbar as needed, so as to perform slitting at different positions of the film material.

[0040] Among them, the film material to be slitted can include multiple layers, and the slitting device can only need to slit some layers on the upper side, so it is necessary to adjust the depth of the slitting cutter of the slitting device to obtain a suitable slitting thickness. The current slitting device adjusts the slitting thickness of the slitting cutter by adjusting the height position of the mounting crossbar or the height position of the slitting cutter on the mounting crossbar, which is relatively inconvenient.

[0041] The adjustable slitting cutter disclosed in the embodiments can conveniently adjust the depth of the slitting cutter. Referring to Figure 1The adjustable slitting cutter mainly comprises a fixed tube 10, a slitting member 20, an adjusting assembly 30 and an elastic member 40.

[0042] In the adjustable slitting cutter, the fixed tube 10 is through in the first direction, and a sliding cavity 11 is arranged in the fixed tube 10, and a first opening 12 is formed at one end of the fixed tube 10 in the first direction; the slitting member 20 is slidably arranged in the sliding cavity 11 in the first direction, and the slitting member 20 is provided with a slitting part; the slitting part is adapted to extend out of or retract into the first opening 12; the adjusting assembly 30 comprises a fixed sleeve 31 and an adjusting screw 32; the fixed sleeve 31 is fixedly connected to the fixed tube 10; the adjusting screw 32 is threadedly connected to the fixed sleeve 31 in the first direction, and is abuttingly connected to the slitting member 20 in the first direction, and is adapted to adjust the position of the slitting member 20 relative to the fixed tube 10; the elastic member 40 acts on the fixed tube 10 and the slitting member 20 in the first direction, and is used to apply a force to the slitting member 20 to keep the slitting member 20 in abutting connection with the adjusting screw 32.

[0043] Specifically, referring to Figure 1 and Figure 4 , the fixed tube 10 is a tubular member through in the first direction, and a sliding cavity 11 is formed in the fixed tube 10 by the inner wall of the fixed tube 10, and a first opening 12 is formed at one end of the fixed tube 10 in the first direction, and an internally threaded interface is further formed at the other end of the fixed tube 10 in the first direction, which is used to threadedly connect the fixed sleeve 31 of the adjusting assembly 30. Figure 4 Referring to , the inner wall of the sliding cavity 11 of the fixed tube 10 is provided with a first abutting part 13, and specifically, the first abutting part 13 can be regarded as a flange formed by the inner wall of the fixed tube 10 at the end of the fixed tube 10 where the first opening 12 is formed, and the flange is formed around the axis of the fixed tube 10, and the surface of the flange facing the other end of the first direction forms an abutting surface for the elastic member 40.

[0044] Referring to Figure 1The cutting member 20 is arranged in the fixed tube 10 and can slide in the sliding cavity 11 in the first direction. A cutting portion is formed at one end of the cutting member 20 in the first direction, and the cutting portion is used for cutting the film material and can extend out of or retract into the first opening 12 of the fixed tube 10. That is, by reciprocating sliding of the cutting member 20 in the sliding cavity 11 of the fixed tube 10, the length of the cutting portion of the cutting member 20 extending out of the first opening 12 of the fixed tube 10 can be adjusted. For example, when the cutting member 20 moves towards the end of the fixed tube 10 provided with the internal threaded interface, the length of the cutting portion of the cutting member 20 extending out of the first opening 12 of the fixed tube 10 is shortened. When the cutting member 20 moves towards the end provided with the first opening 12, the length of the cutting portion of the cutting member 20 extending out of the first opening 12 of the fixed tube 10 is increased. By reciprocating movement of the cutting member 20, the cutting thickness of the adjustable cutting knife can be adjusted.

[0045] The cutting member 20 comprises a clamp 21 and a blade 22. The clamp 21 is provided with a clamping groove 23. The blade 22 is inserted into and fixed in the clamping groove 23 and forms the cutting portion. The outer wall of the cutting member 20 is provided with a second abutting portion 25.

[0046] Specifically, the clamp 21 is provided with a clamping seat 211 and two clamping arms 212. The two clamping arms 212 are arranged in the clamping seat 211 and extend in the first direction, and the gap between the two clamping arms 212 forms the clamping groove 23. The cutting member 20 further comprises a fastening bolt 24 which is screwed in the second direction perpendicular to the first direction in the two clamping arms 212, so that the two clamping arms 212 abut against each other and clamp and fix the blade 22. The blade 22 is provided with a locking hole 26 corresponding to the position of the fastening bolt 24, and the fastening bolt 24 penetrates the locking hole 26.

[0047] Referring to Figure 2 and Figure 3 The cutting member 20 comprises a clamp 21 and a blade 22. The clamp 21 is provided with a cylindrical clamping seat 211, and two clamping arms 212 are arranged on the clamping seat 211 and extend in the first direction, and a gap between the two clamping arms 212 forms the clamping groove 23. When the width of the clamping groove 23 is appropriate, the blade 22 can be inserted into the clamping groove 23 and slightly squeeze the two clamping arms 212. At this time, the elastic deformation of the two clamping arms 212 itself can clamp the blade 22, so as to fix the blade 22 on the clamp 21. After the blade 22 is fixed on the clamp 21, the blade 22 extends out of the clamp 21 in the first direction, thereby forming a cutting portion for cutting the film material. By arranging the clamping groove 23, the blade 22 can be conveniently replaced to adapt to different requirements and types of cutting work.

[0048] The clamping seat 211 also forms a second abutting part 25 of the slitting element 20, which is formed with an abutting surface on the side surface facing the fixed tube 10 for abutting cooperation with the elastic element 40.

[0049] Further, in order to improve the stability of the blade 22 on the clamp 21, the slitting element 20 is further provided with a fastening bolt 24, which is screwed on the two clamping arms 212 along a second direction perpendicular to the first direction, that is, a threaded hole can be provided on one of the clamping arms 212, and a through hole is provided on the other clamping arm 212, the fastening bolt 24 can pass through the through hole and be screwed with the threaded hole on the other clamping arm 212, so as to lock the two clamping arms 212 together, and the two clamping arms 212 can abut against each other and clamp and fix the blade 22 between them.

[0050] In addition, a locking hole 26 can also be provided on the blade 22, the position of the locking hole 26 corresponds to the fastening position of the fastening bolt 24, the fastening bolt 24 passes through the through hole on one clamping arm 212, then passes through the locking hole 26 on the blade 22, and is screwed with the threaded hole on the other clamping arm 212, so as to avoid the blade 22 from falling off the clamping groove 23.

[0051] Referring to Figure 1 As one aspect of the adjustable slitting cutter involved in the embodiment, the adjusting assembly 30 includes a fixed sleeve 31, an adjusting screw 32, a distance measuring sleeve 33, and a locking bolt 34. The distance measuring sleeve 33 is rotatably sleeved outside the fixed sleeve 31 and is fixedly connected with the adjusting screw 32. The outer wall of the fixed sleeve 31 is provided with a first scale along the first direction, and the outer wall of the distance measuring sleeve 33 is provided with a second scale around the rotation axis of the distance measuring sleeve 33, and the first scale and the second scale are used to cooperate to measure the extension length of the adjusting screw 32 relative to the fixed sleeve 31. The locking bolt 34 is threadedly connected with the fixed sleeve 31 along the second direction perpendicular to the first direction, penetrates the side wall of the fixed sleeve 31, and is adapted to abut against the adjusting screw 32 to lock it.

[0052] Specifically, the fixed sleeve 31 is a tubular member with both ends penetrating in the first direction, and an inner thread can be arranged on the inner wall thereof. The adjusting screw 32 can be threadedly engaged with the inner thread of the fixed sleeve 31, and the fixed sleeve 31 should have a certain length, so that the adjusting screw 32 can maintain the stability of the engagement with the fixed sleeve 31 when threadedly engaged with the fixed sleeve 31. Meanwhile, one end of the fixed sleeve 31 is provided with an external threaded joint, which can be threadedly connected with the internal thread of one end of the fixed pipe 10, so as to connect the fixed sleeve 31 and the fixed pipe 10 into one body. The adjusting screw 32 penetrates the fixed sleeve 31 and has a certain length, so that both ends thereof can extend out of both ends of the fixed sleeve 31, one end of which abuts against the end of the clamping seat 211 of the cutting member 20, and the other end can be fixedly connected with the distance sleeve 33. The fixedly connected manner of the distance sleeve 33 and the adjusting screw 32 can be that the distance sleeve 33 and the end of the adjusting screw 32 are riveted together from the outside by using a rivet or the like.

[0053] The distance sleeve 33 is a tubular member with one end closed and the other end open, and the inner diameter thereof matches the outer diameter of the fixed sleeve 31, so that the distance sleeve 33 can be sleeved outside the fixed sleeve 31. By rotating the distance sleeve 33, the adjusting screw 32 can be rotated relative to the fixed sleeve 31, so as to adjust the extension degree of the cutting member 20. Meanwhile, a first scale is arranged on the outer wall of the fixed sleeve 31, and a second scale is arranged on the outer wall of the distance sleeve 33. By the cooperation of the two scales, the extension length of the adjusting screw 32 can be accurately controlled by using the edge of the one end of the distance sleeve 33 and the fixed sleeve 31, in a similar way to that of a micrometer. Therefore, the length of the adjusting screw 32 extending out of the fixed sleeve 31 can be measured by the cooperation of the first scale and the second scale, and the length of the cutting part of the cutting member 20 extending out of the fixed pipe 10 can be measured, so as to facilitate the control of the cutting thickness of the cutting knife.

[0054] The locking bolt 34 is threadedly connected on the fixed sleeve 31 and penetrates the side wall of the second sleeve in the second direction and extends into the interior of the second sleeve. After the cutting member 20 is adjusted to the appropriate position, the locking bolt 34 can be tightened, so that the end of the locking bolt 34 abuts against the adjusting screw in the fixed sleeve 31, thereby forcing the adjusting screw, so as to avoid the position of the cutting member 20 from being changed due to the rotation of the adjusting screw 32.

[0055] In addition, with reference to Figure 1The elastic member 40 is a spring, which is sleeved on the slitting member 20 along the first direction, and the two ends of the elastic member 40 abut against the first abutting portion 13 and the second abutting portion 25 along the first direction respectively. Specifically, the elastic member 40 is sleeved on the two clamping arms 212 of the slitting member 20, and one end of the elastic member 40 abuts against the clamping seat 211. When the slitting member 20 is assembled into the fixed tube 10, the other end of the elastic member 40 also abuts against the first abutting portion 13 of the fixed tube 10. Since the elastic member 40 is sleeved on the slitting member 20, the elastic member 40 is not easy to be separated from the abutting cooperation with the fixed tube 10 and the slitting member 20, and the assembly of the fixed tube 10, the slitting member 20 and the elastic member 40 is facilitated. During the adjustment of the extension degree of the slitting member 20 by the adjusting assembly 30, when the adjusting screw 32 is screwed in, the adjusting screw 32 abuts against the clamping seat 211 of the slitting member 20, and the clamping seat 211 presses the elastic member 40, the elastic member 40 shrinks and exerts force on the slitting member 20; when the adjusting screw 32 is screwed out, the elastic member 40 has a tendency to restore the deformation, and drives the slitting member 20 to retract backward, so as to reduce the extension degree of the slitting member 20.

[0056] The adjustable slitting cutter and the adjustable slitting device, which comprise a fixed tube 10, a slitting member 20, an adjusting assembly 30 and an elastic member 40, the slitting member 20 is slidingly assembled in a sliding cavity 11 of the fixed tube 10, a fixed sleeve 31 of the adjusting assembly 30 is fixedly connected with the fixed tube 10, an adjusting screw 32 is screwed with the fixed sleeve 31, and the adjusting screw 32 can be adjusted in position relative to the fixed sleeve 31 by being screwed, the adjusting screw 32 abuts against the slitting member 20, and the two ends of the elastic member 40 act on the fixed tube 10 and the slitting member 20 respectively, so that the slitting member 20 is kept stable by the action of the elastic member 40 when the position of the slitting member 20 relative to the fixed tube 10 is adjusted by the pushing of the adjusting screw 32, and the slitting member 20 can be adjusted in position with the adjusting screw 32 regardless of whether the adjusting screw 32 is screwed in or screwed out; therefore, the adjustable slitting cutter can adjust the extension degree of the slitting part of the slitting member 20 out of the first opening 12 of the fixed tube 10 by screwing the adjusting screw 32, so that the slitting thickness of the slitting cutter is conveniently adjusted.

[0057] The above description and the embodiment are used to explain the protection scope of the utility model, but do not constitute the limitation to the protection scope of the utility model. Through the enlightenment of the utility model or the above embodiment, the modification, equivalent replacement or other improvement of the utility model embodiment or one part of technical features can be obtained by the logical analysis, reasoning or limited test of the ordinary skill in the art combined with the common knowledge, the ordinary skill in the art and / or the prior art, and should be included in the protection scope of the utility model.

Claims

1. An adjustable slitting cutter, comprising: a fixed tube (10) extending along a first direction, having a sliding cavity (11) therein, and having a first opening (12) at one end in the first direction; a slitting member (20) slidingly arranged in the sliding cavity (11) along the first direction, and having a slitting portion; the slitting portion being adapted to extend out of or retract into the first opening (12); an adjusting assembly (30) including a fixed sleeve (31) and an adjusting screw (32); the fixed sleeve (31) being fixedly connected to the fixed tube (10); the adjusting screw (32) being threadedly connected to the fixed sleeve (31) along the first direction, and being abuttingly connected to the slitting member (20) along the first direction, and being adapted to adjust its position relative to the fixed sleeve (31) and to drive the slitting member (20) to adjust its position relative to the fixed tube (10); and a resilient member (40) acting on the fixed tube (10) and the slitting member (20) along the first direction, and being adapted to apply a force to the slitting member (20) to keep it in abutting connection with the adjusting screw (32). The adjusting assembly (30) further comprises a distance measuring sleeve (33) rotatably sleeved on the outside of the fixed sleeve (31) and fixedly connected to the adjusting screw (32); the fixed sleeve (31) has a first scale arranged along the first direction on its outer wall, and the distance measuring sleeve (33) has a second scale arranged around the rotation axis of the distance measuring sleeve (33) on its outer wall; the first scale and the second scale are adapted to cooperate to measure the extension length of the adjusting screw (32) relative to the fixed sleeve (31). The inner wall of the sliding cavity (11) of the fixed tube (10) has a first abutting portion (13) protruding therefrom; the outer wall of the slitting member (20) has a second abutting portion (25) protruding therefrom; the resilient member (40) is a spring, which is sleeved on the slitting member (20) along the first direction, and has its two ends in the first direction abutting against the first abutting portion (13) and the second abutting portion (25) respectively. The adjusting assembly (30) further comprises a locking bolt (34) threadedly connected to the fixed sleeve (31) along a second direction perpendicular to the first direction, and penetrating through the side wall of the fixed sleeve (31) and being adapted to abut against the adjusting screw (32) to lock it. The slitting member (20) comprises a clamp (21) and a blade (22); the clamp (21) has a clamping groove (23); the blade (22) is inserted into and fixed in the clamping groove (23) and forms the slitting portion.

2. An adjustable slitting blade as claimed in claim 1 wherein, The clamp (21) has a clamping seat (211) and two clamping arms (212); the two clamping arms (212) are arranged on the clamping seat (211) and extend along the first direction, and the gap between them forms the clamping groove (23).

3. An adjustable slitting blade as claimed in claim 1 wherein, The slitting member (20) further comprises a fastening bolt (24) threadedly connected to the two clamping arms (212) along the second direction perpendicular to the first direction, so that the two clamping arms (212) abut against each other and clamp and fix the blade (22).

4. An adjustable slitting blade as defined in claim 1, wherein, ​ 5. An adjustable slitting blade as defined in claim 1, wherein, ​ 6. An adjustable slitting blade as claimed in claim 5 wherein, ​ 7. An adjustable slitting blade as claimed in claim 6 wherein, ​ 8. An adjustable slitting blade as claimed in claim 7 wherein, The blade (22) is provided with a locking hole (26) corresponding to the position of the fastening bolt (24), and the fastening bolt (24) penetrates the locking hole (26).

9. An adjustable slitting device comprising a mounting crossbar, characterized in that Also included is an adjustable slitting knife as claimed in any of claims 1-8; the adjustable slitting knife is mounted on the mounting crossbar and is adapted to adjust its position on the mounting crossbar along the extension direction of the mounting crossbar.

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