Continuous-firing scraper

Abstract

The utility model discloses a running-firing scraper which comprises a scraper body (1), a scraper cover (2), a blade (3), a scraper rest (4) and a standby blade (100). The cutter cover (2) comprises a cover plate (21) and a guide seat (22); the cutter further comprises a blade pressing frame (5) and an elastic piece (6); the blade pressing frame (5) comprises a pressing plate (51) and a guide part (52); the elastic piece (6) is arranged between the pressing plate (51) and the cover plate (21) and used for supporting the pressing plate (51) upwards, so that the blade (3) has the tendency of abutting against the blade rest (4) upwards to achieve continuous shooting. One of the guide part (52) of the blade pressing frame (5) and the guide seat (22) of the blade cover (2) is provided with a guide groove (221) extending up and down, and the other guide part (52) extends into the guide groove (221) and moves up and down along the guide groove (221). The blade pressing frame of the running-firing scraper is convenient to manufacture and high in strength.

Description

TECHNICAL FIELD

[0001] The utility model relates to scraper technical field, concretely relates to a continuous scraper. BACKGROUND

[0002] Scraper is the main tool of scraping, according to the different scraping surface of workpiece, scraper can be divided into three major categories of flat scraper, triangular scraper and crescent-shaped scraper.

[0003] In order to realize quick tool changing and continuous shooting function, there is a continuous shooting scraper scheme at present. For example, the applicant's prior application of the Chinese utility model patent with the authorization number CN220660942U discloses a kind of continuous scraper, the continuous scraper includes tool body and blade, blade is arranged in the front end in tool body, tool body is equipped with tool rest, gear sliding slot is set up on the surface of tool body, gear sliding slot is equipped with gear button, tool rest is slid forward and backward, tool rest lower surface is equipped with blade slot for spare blade, blade slot opening is equipped with tool cover, spare blade is sequentially stacked in blade slot and located in the front end below tool rest, first spring is supported between spare blade and tool cover, so that blade has always upward and tool rest lower surface abutting to realize continuous shooting trend, tool rest lower surface is equipped with lock block cooperating with blade, gear sliding slot is equipped with tool changing gear, scraper use gear and scraper retraction gear, tool rest realizes tool changing and forward and backward telescopic positioning by gear button and three gears.

[0004] However, the above-mentioned patent needs to set through hole in the pressing blade holder, which is relatively troublesome to manufacture, and the through hole reduces the strength of the pressing blade holder. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem in the prior art, and provides a continuous scraper, and the pressing blade holder of the continuous scraper is easy to manufacture and has high strength.

[0006] The utility model provides a continuous scraper, which adopts the technical scheme that

[0007] The tool body has a receiving cavity, a bottom storage cavity connected with the receiving cavity and a bottom opening connected with the bottom storage cavity.

[0008] The tool cover is movably arranged at the bottom opening and is used to open or close the bottom opening.

[0009] The blade is arranged in the receiving cavity of the tool body.

[0010] The knife holder is movably arranged in the accommodating cavity and is used for detachably mounting the blade thereon and moving the blade in and out of the accommodating cavity under the action of external force;

[0011] The spare blade is movably arranged in the bottom storage cavity and is located below the knife holder;

[0012] The utility model discloses a knife holder, a spare blade, a knife cover and a pressing blade holder.

[0013] The knife cover comprises a cover plate and a guide seat connected with the cover plate and extending upwardly.

[0014] The pressing blade holder comprises a pressing plate and a guide part connected with the pressing plate and extending downwardly.

[0015] The elastic member is arranged between the pressing plate of the pressing blade holder and the cover plate of the knife cover and is used for upwardly supporting the pressing plate so that the blade has a tendency of upwardly abutting against the knife holder to realize continuous shooting.

[0016] One of the guide part of the pressing blade holder and the guide seat of the knife cover has an upwardly and downwardly extending guide slot, and the other one extends into the guide slot and moves upwardly and downwardly along the guide slot.

[0017] In order to limit the position of the pressing blade holder upwardly, the guide slot is arranged on the guide seat of the knife cover, and the upper end of the guide seat extends transversely into the guide slot to form a first clamping leg.

[0018] The lower end of the guide part of the pressing blade holder extends transversely to form a second clamping leg extending into the guide slot.

[0019] The first clamping leg is located above the second clamping leg and limits the position of the second clamping leg upwardly.

[0020] Alternatively, the guide slot can also be arranged on the pressing blade holder, and the guide seat extends into the guide slot.

[0021] In order to prevent the blade cartridge from being opened by mistake during the use of the scraper, the rear part of the knife body has a hanging hole penetrating upwardly and downwardly.

[0022] The bottom of the knife body further has a mounting cavity located behind the bottom storage cavity and opening downwardly, and the mounting cavity movably arranges a blade cartridge used for placing the spare blade and closing the opening.

[0023] In the state that the elastic clamping leg is connected with the knife body clamping joint, the elastic clamping leg is hidden in the hanging hole of the knife body.

[0024] By hiding the elastic clamping leg in the hanging hole, the user is not easy to press the elastic clamping leg during the use of the scraper, and the blade cartridge is not opened by mistake.

[0025] In order to simultaneously meet the requirements of positioning the blade, facilitating blade replacement and facilitating manufacturing, the front end of the tool holder is provided with a positioning column below;

[0026] Correspondingly, the blade is provided with a positioning hole into which the positioning column extends;

[0027] The tool body is provided with an operating member that cooperates with the tool holder to realize continuous feeding of the blade;

[0028] An external force acts on the operating member, and the operating member moves forward and backward through the tool holder to drive the blade to move forward and backward, so that the blade has different positions:

[0029] In the retracted position, the blade is completely located in the accommodating cavity;

[0030] In the use position, the front end of the blade is located outside the accommodating cavity, and the positioning column of the tool holder is at least partially located in the accommodating cavity;

[0031] In the blade replacement position, the front end of the blade is located outside the accommodating cavity, and the positioning hole of the blade is completely located outside the accommodating cavity.

[0032] Through cooperation of the positioning column and the positioning hole, relative positioning between the tool holder and the blade is facilitated, and manufacturing is facilitated; in the use position, the positioning column of the tool holder is at least partially located in the accommodating cavity, so that the positioning column does not exit from the positioning hole during use of the scraper, the blade does not fall off, and the user is facilitated during scraping, and in the blade replacement position, the positioning hole is located outside the accommodating cavity, and the blade is facilitated to be replaced.

[0033] In order to improve safety, the blade is in the blade replacement position, and the rear part of the blade is located in the accommodating cavity. In this way, in the blade replacement position, the blade is still partially located in the accommodating cavity, and the blade does not directly fall off to injure the user, and safety is relatively high; if the user mistakenly operates to the blade replacement position, the blade directly falls off, and there is a safety hazard.

[0034] The cooperation structure of the tool holder and the blade can be various, and preferably, in order to facilitate manufacturing, the tool body is provided with an opening at the front end for the blade to enter and exit the accommodating cavity, which is referred to as a front end opening;

[0035] In the blade replacement position, the rear end surface of the blade has a gap in the upward and downward direction between the lower opening wall of the front end opening of the tool body, and the gap is used to allow the positioning column on the tool holder to exit the positioning hole of the blade in a state that an external force acts downward on the front end of the blade.

[0036] In order to stably position the blade on the tool holder and improve the installation efficiency of the blade, the blade and each spare blade have the same structure, and the upper surface of each rear part has an upward protruding upper protruding part, and the lower surface of each rear part has a downward protruding lower protruding part;

[0037] The lower surface of the tool holder is partially concave upward to form a limiting groove for embedding the upper or lower protruding part, and the rear groove wall of the limiting groove is used for abutting against the front and rear of the upper or lower protruding part.

[0038] By setting the limiting groove, the limiting groove is matched with the upper protruding part, so that the blade is stably positioned on the tool holder; meanwhile, the upper and lower protruding parts are set, so that the front and back of the blade need not be distinguished when the blade is installed, which is beneficial to improving the installation efficiency of the blade; the upper protruding part can be matched with the limiting groove, or the lower protruding part can be matched with the limiting groove after the blade is turned over.

[0039] In order to facilitate the continuous shooting of the blade, the front groove wall of the limiting groove is gradually inclined forward from top to bottom. By inclining the front groove wall, the opening of the limiting groove is larger, so that the upper or lower protruding part of the standby blade can enter the limiting groove, thereby facilitating the continuous shooting of the blade.

[0040] In order to facilitate the continuous shooting of the blade, the upper surface of the pressing plate of the blade pressing holder abuts against the lower protruding part of the standby blade at the rear part, and there is a distance between the upper surface of the pressing plate of the blade pressing holder and the front part of the standby blade at the front part. The pressing plate acts on the lower protruding part of the standby blade to support the standby blade upward, and the front part of the upper surface of the pressing plate does not contact the front part of the standby blade, so that the front part of the standby blade is not interfered in space, the standby blade is facilitated to move forward when the blade is replaced, thereby facilitating the continuous shooting of the blade.

[0041] In order to make the left and right actions of the blade pressing holder on the standby blade more uniform, the tool holder moves in the front and rear direction, and the left and right directions are on both sides of the front and rear direction.

[0042] The blade extends in the left and right directions.

[0043] The guide part has two parts and is distributed in the left and right directions.

[0044] Correspondingly, the guide seat has two parts and is distributed in the left and right directions.

[0045] The elastic member has two parts and is distributed in the left and right directions.

[0046] In this way, the guide part, the guide groove and the elastic member are provided with two parts, so that the left and right actions of the blade pressing holder on the standby blade are more uniform.

[0047] Compared with the prior art, the tool cover comprises a cover plate and a guide seat, and the blade pressing holder comprises a pressing plate and a guide part, the pressing plate presses the standby blade upward, the pressing plate does not need to be punched, and the pressing plate is convenient to manufacture and has large strength.

[0048] Meanwhile, the pressing plate of the pressing blade holder is in the required preset position through the guiding cooperation of the guide part and the guide seat, so that the spare blade is in the required preset position, thereby realizing the continuous shooting function of the scraper. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 It is a schematic view of the embodiment of the utility model;

[0050] Figure 2 It is an exploded view of the embodiment of the utility model;

[0051] Figure 3 It is an exploded view of the embodiment of the utility model from another angle;

[0052] Figure 4 It is another exploded view of the embodiment of the utility model;

[0053] Figure 5 It is Figure 1 It is a schematic view of the scraper from another angle;

[0054] Figure 6 It is an assembly schematic view of the knife cover, the pressing blade holder and the elastic member in the embodiment of the utility model;

[0055] Figure 7 It is Figure 6 It is a sectional view of the assembly;

[0056] Figure 8 It is Figure 6 It is an exploded view of the assembly;

[0057] Figure 9 It is an assembly schematic view of the operating member, the knife holder, the blade, the spare blade, the knife cover and the pressing blade holder in the embodiment of the utility model;

[0058] Figure 10 It is Figure 9 It is a schematic view of the assembly from another angle;

[0059] Figure 11 It is Figure 9 It is an exploded view of the assembly;

[0060] Figure 12 It is Figure 11 It is a schematic view of the assembly from another angle;

[0061] Figure 13 It is a schematic view of another state of the embodiment of the utility model;

[0062] Figure 14 It is Figure 13 It is a schematic view of the scraper from another angle;

[0063] Figure 15 It is a schematic view of another state of the embodiment of the utility model;

[0064] Figure 16 For Figure 15 Another angle view of the continuous release scraper;

[0065] Figure 17 For Figure 15 Cross-sectional view of the continuous release scraper;

[0066] Figure 18 For the schematic view of the blade in the embodiment of the utility model;

[0067] Figure 19 For the schematic view of the blade holder in the embodiment of the utility model. DETAILED DESCRIPTION

[0068] The utility model will be described further in detail below in combination with the embodiment of the drawings.

[0069] Referring to Figures 1-19 , it is a preferred embodiment of the utility model. The continuous release scraper comprises a blade body 1, a blade cover 2, a blade 3, a blade holder 4, a spare blade 100, a blade pressing holder 5, an elastic member 6, an operating member 9 and the like.

[0070] Among them, referring to Figure 1 , Figure 4 , Figure 17 , the blade body 1 has a containing cavity 11, a bottom storage cavity 12 communicated with the containing cavity 11, and a bottom opening 13 communicated with the bottom storage cavity 12. The blade body 1 comprises an upper blade body 1a and a lower blade body 1b fixedly engaged up and down. The blade body 1 has an opening at the front end for the blade 3 to enter or exit the containing cavity 11, which is recorded as a front end opening 15. The middle part of the blade body 1 along the front and rear direction is curved upward to facilitate user holding. The rear part of the blade body 1 has a hanging hole 14 penetrating up and down.

[0071] Referring to Figure 4 , Figures 6-8 , the blade cover 2 is movably arranged at the bottom opening 13 and is used to open or close the bottom opening 13. Specifically, the blade cover 2 comprises a cover plate 21 and a guide seat 22 connected with the cover plate 21 and extending upward. The bottom of the blade body 1 further has a mounting cavity located behind the bottom storage cavity 12 and opening downward, and a blade cartridge 7 for placing a reserve blade (not shown in the figure) and for closing the opening is movably arranged at the opening, the blade cartridge 7 has an elastic clamping leg 71 detachably connected with the blade body 1; in the state that the elastic clamping leg 71 is connected with the blade body 1 by clamping, the elastic clamping leg 71 is hidden in the hanging hole 14 of the blade body 1.

[0072] Referring to Figure 18The blade 3 is disposed within the receiving cavity 11 of the blade body 1. The blade 3 extends horizontally and is approximately rectangular. The upper surface of the blade 3 has an upwardly protruding upper protrusion 32 at the rear position, and the lower surface has a downwardly protruding lower protrusion 33 at the rear position.

[0073] See Figure 19 The tool holder 4 is T-shaped and is movably positioned within the receiving cavity 11, allowing the blade 3 to be detachably mounted thereon. The tool holder 4 can move the blade 3 in and out of the receiving cavity 11 under external force. A portion of the lower surface of the tool holder 4 is concave upwards to form a limiting groove 42 into which the upper protrusion 32 or lower protrusion 33 is inserted. The rear wall 421 of this limiting groove 42 abuts against the upper or lower protrusion 32 or lower protrusion 33. The front wall 422 of the limiting groove 42 gradually slopes forward from top to bottom. A positioning post 41 is located below the front end of the tool holder 4; correspondingly, the blade 3 has a positioning hole 31 into which the positioning post 41 extends. The edge of the positioning post 41 is chamfered to facilitate its insertion into the positioning hole 31. The two sides of the tool holder 4's forward and backward movement direction are the left and right directions. There are three positioning posts 41, spaced apart on the left and right, with a magnetic block 43 between two positioning posts 41; correspondingly, the blade 3 has three positioning holes 31 spaced apart on the left and right, each positioning hole 31 allowing the corresponding positioning post 41 to extend into; the blade 3 is made of metal and is attracted to the magnetic block 43. The number of positioning posts 41 and positioning holes 31 can be adjusted as needed, and two or four can be set.

[0074] See Figure 17 The spare blade 100 is vertically confined within the bottom storage cavity 12 and located below the blade holder 4. This embodiment uses one spare blade 100 as an example. The number of spare blades 100 can be adjusted as needed, and 2 to 3 can be set. Each spare blade 100 has the same structure and size as the blade 3.

[0075] See Figures 6-8 , Figure 17 The blade holder 5 includes a pressure plate 51 and a guide portion 52 connected to the pressure plate 51 and extending downward; the pressure plate 51 is located below the spare blade 100; the rear part of the upper surface of the pressure plate 51 of the blade holder 5 abuts against the lower protrusion 33 of the spare blade 100, and there is a distance between the front part of the upper surface of the pressure plate 51 of the blade holder 5 and the front part of the spare blade 100.

[0076] See Figures 6-8 , Figure 17 The elastic element 6 is disposed between the pressure plate 51 of the blade holder 5 and the cover plate 21 of the blade cover 2, and is used to support the pressure plate 51 upward, so that the blade 3 tends to abut against the blade holder 4 upward to achieve continuous firing. The elastic element 6 is a helical spring or an elastic strip.

[0077] SeeFigures 6-8 The guide part 52 of the pressing blade holder 5 and the guide seat 22 of the blade cover 2 are provided with one of the guide grooves 221 extending upward and downward, and the other one is inserted into the guide groove 221 and moves upward and downward along the guide groove 221. The guide groove 221 is located on the guide seat 22 of the blade cover 2, and the upper end of the guide seat 22 extends transversely into the guide groove 221 to form the first clamping leg 23; the lower end of the guide part 52 of the pressing blade holder 5 extends transversely to form the second clamping leg 53 which is inserted into the guide groove 221; the first clamping leg 23 is located above the second clamping leg 53 and limits the upward movement of the second clamping leg 53. The guide part 52 has four, two on the left and two on the right; correspondingly, the guide seat 221 has four, two on the left and two on the right; the elastic member 6 has two and is distributed at intervals on the left and right.

[0078] Referring to Figure 1 The operating member 9 is arranged on the blade body 1 and cooperates with the blade holder 4 to realize the continuous firing of the blade 3. Referring to Figure 11 、 Figure 12 The spring 10 is arranged between the operating member 9 and the blade holder 4 to support the operating member 9 upward. The external force acts on the operating member 9, and the operating member 9 moves forward and backward through the blade holder 4 to drive the blade 3 to move forward and backward, so that the blade 3 has different positions: in the retracted position ( Figure 1 、 Figure 5 ), the blade 3 is completely located in the accommodating cavity 11; in the use position ( Figure 13 、 Figure 14 ), the front end of the blade 3 is located outside the accommodating cavity 11, and the positioning column 41 of the blade holder 4 is at least partially located in the accommodating cavity 11. In this embodiment, in the use position, the positioning column 41 is almost completely located in the accommodating cavity 11; in the blade changing position ( Figure 15 、 Figure 16 ), the front end of the blade 3 is located outside the accommodating cavity 11, and the positioning hole 31 of the blade 3 is completely located outside the accommodating cavity 11. When the blade 3 is in the blade changing position, the rear part of the blade 3 is located in the accommodating cavity 11, and the rear part of the blade 3 has a gap with the lower opening wall of the front end opening 15 of the blade body 1 in the upward and downward direction, which is used for the positioning column 41 on the blade holder 4 to exit the positioning hole 31 of the blade 3 in the state that the external force acts downward on the front end of the blade 3. The cooperation structure between the operating member 9, the blade holder 4 and the blade body 1 is the existing structure, and the operating member 9 cooperates with different positions on the blade body 1 in the retracted position, the use position and the blade changing position, respectively. Please refer to the Chinese Utility Model Patent No. CN220660942U “A continuous firing blade” for details. Referring to Figure 2The blade body 1 has a sliding groove 16 for the operating component 9 to slide back and forth. The sliding groove 16 has three positions: a blade changing position 16a, a scraper usage position 16b, and a scraper retraction position 16c. The blade holder 5 achieves blade changing and forward / backward positioning through the cooperation of the operating component 9 with these three positions. Of course, the number of positions is not limited to three; it can be four, five, etc. The frontmost blade changing position and the rearmost retraction position remain unchanged, while the additional scraper usage positions allow for adjustment of the blade 3's extension length for ease of use.

[0079] The working principle and usage process are as follows.

[0080] During assembly, retract the operating component 9 to the retracted position, open the blade cover 2, insert the blade 3 and spare blade 100 through the bottom opening 13, then close the blade cover 2, and the blade holder 5 supports the spare blade 100 and blade 3 upwards. Both blade 3 and spare blade 100 have an upper protrusion 32 and a lower protrusion 33, and their front and back structures are identical. Therefore, there is no need to distinguish between the front and back when installing blade 3 and spare blade 100, resulting in high installation efficiency.

[0081] With blade 3 in the retracted position ( Figure 1 , Figure 5 () represents the initial state.

[0082] In use, press down on the operating member 9 and push it forward, which will move the tool holder 4 forward. The tool holder 4 will then push the blade 3 forward, bringing the blade 3 into the working position. Figure 13 , Figure 14 At this point, blade 3 can be used for scraping.

[0083] When a tool change is needed, press down on the operating element 9 and continue pushing the operating element 9 forward to position the blade 3 in the tool change position. Figure 15 , Figure 16 Then, the user presses down on the front end of the blade 3, disengaging the positioning pin 41 of the tool holder 4 from the blade 3. Pulling the blade 3 forward then removes it. Pressing the operating member 9 and pushing it backward to the retracted position, under the action of the elastic member 6 and the blade holder 5, the new spare blade 100 rises until its protrusion 32 embeds into the limiting groove 42 of the tool holder 4, thus enabling blade changing and continuous firing.

Claims

1. A continuous delivery razor comprises a razor body (1) having a receiving cavity (11), a bottom storage cavity (12) communicating with the receiving cavity (11), and a bottom opening (13) communicating with the bottom storage cavity (12); a razor cover (2) movably arranged at the bottom opening (13) and used to open or close the bottom opening (13); a razor blade (3) arranged in the receiving cavity (11) of the razor body (1); a razor holder (4) movably arranged in the receiving cavity (11) and used to detachably mount the razor blade (3) thereon and to drive the razor blade (3) into or out of the receiving cavity (11) under the action of an external force; a spare razor blade (100) movably arranged in the bottom storage cavity (12) below the razor holder (4); characterized in that the razor cover (2) comprises a cover plate (21) and a guide seat (22) extending upwardly from the cover plate (21); and further comprises a blade pressing holder (5) comprising a pressing plate (51) and a guide portion (52) extending downwardly from the pressing plate (51); the pressing plate (51) is arranged below the spare razor blade (100); a resilient member (6) arranged between the pressing plate (51) of the blade pressing holder (5) and the cover plate (21) of the razor cover (2) and used to upwardly support the pressing plate (51) so that the razor blade (3) has a tendency to upwardly abut against the razor holder (4) to realize continuous delivery; one of the guide portion (52) of the blade pressing holder (5) and the guide seat (22) of the razor cover (2) has an upwardly and downwardly extending guide slot (221) into which the other one extends and moves upwardly and downwardly along the guide slot (221).

2. The continuous doctor blade of claim 1, wherein: the guide slot (221) is arranged on the guide seat (22) of the razor cover (2), and an upper end of the guide seat (22) extends transversely into the guide slot (221) to form a first clamping leg (23); a lower end of the guide portion (52) of the blade pressing holder (5) extends transversely to form a second clamping leg (53) extending into the guide slot (221); the first clamping leg (23) is arranged above the second clamping leg (53) and limits the second clamping leg (53) upwardly.

3. The continuous doctor blade of claim 1, wherein: a rear portion of the razor body (1) has a hanging hole (14) extending upwardly and downwardly; the bottom portion of the razor body (1) further has a mounting cavity arranged behind the bottom storage cavity (12) and opening downwardly, and a blade cartridge (7) movably arranged at the opening and used to place a reserve razor blade and to close the opening, the blade cartridge (7) having a resilient clamping leg (71) detachably connected with the razor body (1); when the resilient clamping leg (71) is connected with the razor body (1) by clamping, the resilient clamping leg (71) is hidden in the hanging hole (14) of the razor body (1).

4. The continuous doctor blade of claim 1, wherein: a positioning column (41) is arranged below a front end of the razor holder (4); correspondingly, the razor blade (3) has a positioning hole (31) into which the positioning column (41) extends; the razor body (1) is provided with an operating member (9) cooperating with the razor holder (4) to realize continuous delivery of the razor blade (3); an external force acts on the operating member (9) to move the operating member (9) and the razor blade (3) forwardly and backwardly through the razor holder (4) so that the razor blade (3) has different positions: In the retracted position, the blade (3) is entirely located in the accommodating cavity (11); In the use position, the front end of the blade (3) is located outside the accommodating cavity (11), and the positioning column (41) of the tool holder (4) is at least partially located in the accommodating cavity (11); In the tool changing position, the front end of the blade (3) is located outside the accommodating cavity (11), and the positioning hole (31) of the blade (3) is entirely located outside the accommodating cavity (11).

5. The continuous doctor blade of claim 4, wherein: In the tool changing position, the rear part of the blade (3) is located in the accommodating cavity (11).

6. The continuous doctor blade of claim 4, wherein: The front end of the tool body (1) is provided with an opening for the blade (3) to enter or exit the accommodating cavity (11), which is referred to as a front end opening (15); In the tool changing position, the rear part of the blade (3) has a gap between the lower end face and the lower opening wall of the front end opening (15) in the up-down direction, which is used for the positioning column (41) on the tool holder (4) to exit the positioning hole (31) of the blade (3) in the state that an external force acts downward on the front end of the blade (3).

7. The continuous doctor blade of claim 1, wherein: The blade (3) and each spare blade (100) have the same structure, and the rear part of the upper surface has an upward protruding upper protruding part (32), and the rear part of the lower surface has a downward protruding lower protruding part (33); The lower surface of the tool holder (4) is partially upwardly recessed to form a limiting groove (42) for embedding the upper protruding part (32) or the lower protruding part (33), and the rear groove wall (421) of the limiting groove (42) is used to abut against the front-rear direction of the upper protruding part (32) or the lower protruding part (33).

8. The continuous doctor blade of claim 7, wherein: The front groove wall (422) of the limiting groove (42) gradually inclines forward from top to bottom.

9. The continuous doctor blade of claim 7, wherein: The upper surface of the pressing plate (51) of the blade pressing holder (5) is in abutment with the lower protruding part (33) of the spare blade (100) in the up-down direction, and the upper surface of the pressing plate (51) of the blade pressing holder (5) is a distance away from the front part of the spare blade (100) in the up-down direction.

10. The continuous doctor blade of claim 1, wherein: The front-rear movement direction of the tool holder (4) is the left-right direction; The blade (3) extends in the left-right direction; The guide part (52) has two parts and is distributed in the left-right direction; Correspondingly, the guide seat (22) has two parts and is distributed in the left-right direction; The elastic member (6) has two parts and is distributed in the left-right direction.

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