Locking device and scraper holding mechanism

Abstract

Provided is a locking device, comprising: a bolt capable of freely moving in a second hole; the sliding ring can slide on the plug pin in the longitudinal direction, and the outer diameter of the sliding ring enables the sliding ring to be locked in the locking hole; an elastic member mounted between the proximal end of the main block and the slip ring; the near ends of the eccentric wheel rotating shaft and the bolt can be fixedly mounted in the mounting hole; the eccentric wheel and the eccentric wheel rotating shaft are installed in the eccentric hole, the eccentric wheel is provided with a large-radius part and a small-radius part, in the first position, the large-radius part of the eccentric wheel abuts against the near end of the sliding ring and can push the sliding ring to be locked in the locking hole, and in the second position, the small-radius part of the eccentric wheel abuts against the near end of the sliding ring and can push the sliding ring to be locked in the locking hole. And the slip ring is completely released from the locking hole under the action of the elastic force of the elastic element. The utility model further provides a scraper holding mechanism comprising the locking device. The locking device and the scraper holding mechanism can quickly realize locking and loosening of the scraper.

Description

Technical Field

[0001] The present application relates to the field of tobacco machinery, and more particularly to a locking device for a blade holding mechanism and a blade holding mechanism including the locking device. Background Art

[0002] Scrapers are often used in multiple processes of the production of filter-tipped cigarettes.

[0003] For example, in the production of filter-tipped cigarettes, it is necessary to place a double-length filter segment between two cigarettes and wrap it with tipping paper for bonding, and then rub and connect to form a double-length filter-tipped cigarette, and then cut the double-length filter-tipped cigarette into two equal-length filter-tipped cigarettes of the required length. In the above production process, it is necessary to use a tipping paper cutting drum and a tipping paper cutter to cut the tipping paper into pieces of a certain width. A fixed scraper is installed on the outer circumference of the tipping paper cutting drum, and its cutting edge slightly contacts the surface of the tipping paper drum to remove residual debris and dry paper pieces on the drum.

[0004] After the scraper surface is used for a period of time, scale will accumulate and the cutting edge will be damaged, so it needs to be maintained in time. In the current tipping paper cutting drum blade holding device, the blade is installed between two plate members and can rotate with the main block. The threaded handle passes through the clamping adjustment block and is connected to the main block. Before the threaded handle is fully screwed into the main block, the threaded handle and the main block can move freely along the arc-shaped groove of the clamping adjustment block. When the tapered part of the threaded handle completely enters the card slot in the arc-shaped groove, the main block and the blade are locked together. Therefore, if you want to clean the blade, you need to unscrew the threaded handle from the card slot so that the main block and the blade can move freely. After cleaning, screw in the threaded handle until the blade is locked.

[0005] Before and after each cleaning of the blade, it is necessary to fully unscrew or screw in the tapered part of the threaded handle into the card slot in the arc-shaped groove of the clamping adjustment block. The stroke is long, time-consuming, laborious, and the disassembly and assembly are inconvenient, which affects the operation efficiency. Summary of the Utility Model

[0006] The purpose of the present application is to solve the above technical problems, and provide a locking device for a blade holding mechanism and a blade holding mechanism including the locking device, which can quickly lock and loosen the blade, and has a good self-locking effect.

[0007] According to another purpose of the present application, there is provided a locking device for a blade holding mechanism and a blade holding mechanism including the locking device, which is convenient for quick adjustment and disassembly.

[0008] Provided is a locking device for a scraper holding mechanism, wherein the scraper holding mechanism includes: a fixedly installed main shaft; a main block including a through hole therethrough, the main shaft passing through the through hole, the main block being capable of pivoting around the main shaft, and the main block further including a threaded hole parallel to the through hole; a clamping adjustment block including a first hole and a second hole, the main shaft passing through the first hole, and the clamping adjustment block being capable of being fixed on the main shaft, the second hole being in an arc shape concentric with the first hole, the second hole including a locking hole, wherein the diameter of the locking hole is greater than the width of the remaining part of the second hole, the distal side of the clamping adjustment block abuts against the proximal side of the main block, and the first hole is aligned with the through hole of the main block; characterized in that the locking device includes: a plug, the distal end of the plug having an external thread and being capable of being threadedly engaged in the threaded hole of the main block, the plug being capable of passing through the arc-shaped second hole of the clamping adjustment block and being capable of freely moving in the second hole; a slip ring sleeved on the proximal end of the plug and being capable of longitudinally sliding on the plug, the outer diameter of the slip ring being such that the slip ring can be locked in the locking hole of the clamping adjustment block; an elastic member installed between the proximal end of the main block and the slip ring, the elastic member being compressed when the slip ring is locked in the locking hole; an eccentric wheel shaft including a mounting hole, the proximal end of the plug being capable of being fixedly installed in the mounting hole, the slip ring being located on the distal side of the eccentric wheel shaft; an eccentric wheel including an eccentric hole, the eccentric wheel shaft being installed in the eccentric hole such that the eccentric wheel can rotate around the eccentric wheel shaft, the eccentric wheel having a larger radius part and a smaller radius part, wherein, during the rotation of the eccentric wheel around the eccentric wheel shaft, the eccentric wheel can assume two positions, in the first position, the larger radius part of the eccentric wheel abuts against the proximal end of the slip ring and can push the slip ring to be locked in the locking hole, and in the second position, the smaller radius part of the eccentric wheel abuts against the proximal end of the slip ring, and the slip ring is completely released from the locking hole under the elastic force of the elastic element.

[0009] Therefore, when the locking device is locked, the main block is fixed, and thus the scraper connected to the main block is also fixed; when the locking device is loosened, the plug can freely move in the arc-shaped second hole of the clamping adjustment block, so that the main block can pivot around the main shaft within the range defined by the second hole, thereby driving the scraper to pivot within a certain range, which is beneficial to the cleaning of the scraper.

[0010] Preferably, the distal end of the slip ring includes a frustum portion, which is beneficial for guiding the slip ring into the locking hole.

[0011] Preferably, the elastic element is a helical spring sleeved on the bolt, with one end abutted against the proximal end of the main block and the other end abutted against the slip ring.

[0012] Preferably, the mounting hole includes internal threads, and the proximal end of the bolt includes external threads. The proximal end of the bolt is fixed in the mounting hole by threaded connection.

[0013] Preferably, the eccentric wheel includes a handle to facilitate the user to rotate the eccentric wheel.

[0014] Preferably, the eccentric wheel includes a limiting portion for limiting the rotation range of the eccentric wheel.

[0015] Preferably, the difference between the first position and the second position of the eccentric wheel is 60° - 180°.

[0016] Preferably, the difference between the first position and the second position of the eccentric wheel is 90° or 120°.

[0017] The present application also provides a scraper holding mechanism, including: a main shaft fixedly installed; a main block including a through hole therethrough, the main shaft passing through the through hole, the main block being capable of pivoting around the main shaft, and the main block further including a threaded hole parallel to the through hole; a scraper clamping device for clamping a scraper and mounting the scraper on the main block; a clamping adjustment block including a first hole and a second hole, the main shaft passing through the first hole, and the clamping adjustment block being capable of being fixed on the main shaft, the second hole being in an arc shape concentric with the first hole, the second hole including a locking hole, wherein the diameter of the locking hole is greater than the width of the remaining part of the second hole, the distal side of the clamping adjustment block abuts against the proximal side of the main block, and the first hole is aligned with the through hole of the main block; and a locking device according to the foregoing.

[0018] Preferably, the scraper holding mechanism further includes: a mounting shaft mounted on a frame; a clamping block mounted on the mounting shaft, including two separated parts; a fastening bolt screwed into a threaded hole of the clamping block for clamping the two parts of the clamping block together, wherein the main shaft is fixed on the mounting shaft through the clamping block and extends out of the mounting shaft.

[0019] Preferably, the scraper clamping device includes: a connecting plate for connecting to the main block; an elastic plate mounted on the connecting plate by a plurality of screws for elastically clamping the scraper; and a pressing block mounted on the elastic plate by a plurality of screws, wherein a sheet-shaped scraper is mounted between the elastic plate and the pressing block.

[0020] Preferably, the main block further includes a recess, and the connecting plate of the scraper clamping device is mounted in the recess of the main block.

[0021] Preferably, the first hole of the clamping adjustment block includes a slot, and the clamping adjustment block further includes a third hole at least partially with internal threads, and a clamping bolt can be threadedly engaged in the third hole. When the main shaft is received in the first hole, as the clamping bolt is gradually tightened in the third hole, the slot elastically narrows, so that the clamping adjustment block can be clamped on the main shaft.

[0022] Preferably, the third hole is perpendicular to the slot and perpendicular to the main shaft passing through the first hole.

[0023] The locking device and the scraper holding mechanism according to the present application can quickly lock and release the scraper, facilitate quick adjustment and disassembly, have a good self-locking effect, facilitate the cleaning and maintenance of the scraper, and are easy to maintain, greatly improving the effective operation rate during the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] After reading the following detailed description in conjunction with the accompanying drawings, various aspects of the present disclosure will be better understood. In the drawings:

[0025] Figure 1 A perspective view of a prior art scraper holding mechanism is shown;

[0026] Figure 2 Shown Figure 1 an exploded view of the scraper holding mechanism;

[0027] Figure 3 Shown Figure 2 the clamping adjustment block in;

[0028] Figure 4 Shown Figure 2 the threaded handle in;

[0029] Figure 5 An exploded view of the scraper holding mechanism according to the present application is shown;

[0030] Figure 6 Shown Figure 5 an assembled view of the scraper holding mechanism;

[0031] Figure 7 Shown Figure 5 a partial cross-sectional view of the locking device according to the present application in, the locking device being in a locked state; and

[0032] Figure 8 Shown Figure 5 a partial cross-sectional view of the locking device according to the present application in, the locking device being in a released state. DETAILED DESCRIPTION

[0033] The present disclosure will be described below with reference to the accompanying drawings, which show several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully explain the protection scope of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0034] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, for clarity, the dimensions of some features may be deformed.

[0035] It should be understood that the terms used in the specification are only for describing specific embodiments and are not intended to limit the present disclosure. All terms used in the specification (including technical terms and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, well-known functions or structures may not be described in detail.

[0036] Figure 1 、 Figure 2 shows a doctor blade holding mechanism 100 according to the prior art, including: a mounting shaft 10, which is mounted on a frame (not shown); a clamping block 8, mounted on the mounting shaft 10, including two separated parts; a fastening bolt 9, screwed into a threaded hole of the clamping block 8 for clamping the two parts of the clamping block 8 together; a main shaft 7, which is fixed to the mounting shaft 10 through the clamping block 8 and extends from the mounting shaft 10; a main block 11, including a through hole 18 therethrough, the main shaft 7 passes through the through hole 18, so that the main block 11 can pivot around the main shaft 7 within a certain angle range, the main block 11 further includes a threaded hole 19 parallel to the through hole 18; a doctor blade clamping device 27 for clamping a doctor blade (not shown) and mounting the doctor blade on the main block 11; a clamping adjustment block 4, which includes a first hole 21 and a second hole 22, the main shaft 7 passes through the first hole 21, and the clamping adjustment block 4 can be fixed on the main shaft 7, the second hole 22 is in an arc shape concentric with the first hole 21, the second hole 22 includes a locking hole 23, where the diameter D of the locking hole is greater than the width W of the remaining part of the second hole ( Figure 3 ), the distal side of the clamping adjustment block 4 abuts against the proximal side of the main block 11, and the first hole 21 is aligned with the through hole 18 of the main block; and a threaded handle 17, the threaded handle 17 sequentially includes a threaded portion 24, an adjustment portion 25 and a locking portion 26 from the distal end to the proximal end ( Figure 4) The threaded portion 24 can be threadedly engaged in the threaded hole 19 of the main block 11. The adjusting portion 25 can move within the second hole 22 of the clamping adjustment block 4 along the second hole, thereby driving the main block 11 connected to the threaded handle 17 to pivot around the main shaft 7 within a certain range. The locking portion 26 can cooperate with the locking hole 23 of the second hole 22 of the clamping adjustment block 4, thereby locking the main block 11 onto the clamping adjustment block 4.

[0037] Wherein, the scraper clamping device 27 includes: a connecting plate 12 for connecting to the main block 11; an elastic plate 13 mounted on the connecting plate 12 by a plurality of screws 16 for elastically clamping the scraper; and a pressing block 14 mounted on the elastic plate 13 by a plurality of screws 16, wherein a sheet-shaped scraper (not shown) is mounted between the elastic plate 13 and the pressing block 14. Preferably, the main block 11 further includes a recess 20, and the connecting plate 12 of the scraper clamping device 27 is mounted in the recess 20 of the main block 11.

[0038] Preferably, the first hole 21 of the clamping adjustment block 4 includes a slot 28, and the clamping adjustment block 4 further includes a third hole 29 at least partially having an internal thread, and a clamping bolt 15 can be threadedly engaged in the third hole 29. When the main shaft 7 is received in the first hole 21, as the clamping bolt 15 is gradually tightened in the third hole 29, the slot 28 elastically narrows, so that the clamping adjustment block 4 can be clamped onto the main shaft 7. Preferably, the third hole 29 is perpendicular to the slot 28 and perpendicular to the main shaft 7 passing through the first hole 21.

[0039] Preferably, the locking portion 26 of the threaded handle 17 has a frustoconical shape, and the diameter of its distal end is smaller than the diameter of its proximal end. When the locking portion 26 at least partially enters the locking hole 23 of the second hole 22 of the clamping adjustment block 4, the locking fit between the locking portion 26 and the locking hole 23 will fix the main block 11 and prevent it from moving.

[0040] As can be seen from the above description, in the prior art scraper holding mechanism 100, the scraper is fixed to the main block 11 by the scraper clamping device 27. The main shaft 7 fixedly installed through the mounting shaft 10 passes through the through hole 18 of the main block 11. The clamping adjustment block 4 is fixed to the main shaft 7. The threaded portion 24 of the threaded handle 17 is threadedly connected to the threaded hole 19 of the main block 11. When the threaded handle 17 is not fully screwed into the threaded hole 19, the adjusting portion 25 of the threaded handle 17 can move therein along the arc-shaped second hole 22 of the main block 11. Thus, the main block 11 connected to the threaded handle 17 pivots around the main shaft 7 within a certain range. The pivoting range of the main block 11 is defined by the arc-shaped second hole 22. Continuing to screw the threaded handle 17 into the threaded hole 19, when the locking portion 26 at least partially enters the locking hole 23 of the second hole 22 of the clamping adjustment block 4, the locking portion 26 forms a locking fit with the locking hole 23. Thus, the threaded handle 17 cannot move in the second hole 22 of the clamping adjustment block 4. Thus, the main block 11 cannot pivot around the main shaft 7, and the main block 11 is fixed. The scraper is thus fixed. When the scraper needs to be cleaned, the scraper needs to be able to pivot within a certain range. Thus, the threaded handle 17 is screwed in the reverse direction, so that the locking portion 26 disengages from the locking hole 23 of the clamping adjustment block 4. The adjusting portion 25 of the threaded handle 17 can freely move in the arc-shaped second groove 22 of the clamping adjustment block 4. Thus, the main block 11 and the scraper fixed thereto can pivot within the range defined by the arc-shaped second groove 22.

[0041] As described above, in the prior art scraper holding mechanism, before and after each cleaning of the scraper, the locking portion 26 of the threaded handle 17 needs to be fully screwed out or screwed into the locking hole 23 of the clamping adjustment block 4. The travel is long and time-consuming and laborious, and the disassembly and assembly are inconvenient, affecting the operation efficiency.

[0042] The present application provides a locking device 200 for a scraper holding mechanism and a scraper holding mechanism 300 including the locking device 200, which can quickly realize the locking and relaxation of the scraper, facilitating quick adjustment and disassembly.

[0043] Figure 5 An exploded view showing the scraper holding mechanism 300 including the locking device 200 according to the present application; Figure 6 An assembled view showing the scraper holding mechanism 300; Figure 7 A partial cross-sectional view showing the locking device 200 of the present application, the locking device 200 being in a released state; and Figure 8 A partial cross-sectional view showing the locking device 200, the locking device 200 being in a locked state.

[0044] See Figures 5 - 8 , the locking device 200 according to the present application includes: a plug pin 5, the distal end of the plug pin 5 has an external thread and can be threadedly engaged in the threaded hole 19 of the main block 11. The plug pin 5 can pass through the arc-shaped second hole 22 of the clamping adjustment block 4 and can move freely in the second hole 22; a slip ring 3, which is sleeved on the proximal end of the plug pin 5 and can slide longitudinally on the plug pin 5. The outer diameter of the slip ring 3 is such that the slip ring 3 can be locked in the locking hole 23 of the clamping adjustment block 4; an elastic member 6, which is installed between the proximal end of the main block 11 and the slip ring 3. When the slip ring 3 is locked in the locking hole 23, the elastic member 6 is compressed; an eccentric wheel rotating shaft 2, which includes a mounting hole 30, the proximal end of the plug pin 5 can be fixedly installed in the mounting hole 30, and the slip ring 3 is located on the distal side of the eccentric wheel rotating shaft; an eccentric wheel 32, which includes an eccentric hole 31, the eccentric wheel rotating shaft 2 is installed in the eccentric hole 31, so that the eccentric wheel 32 can rotate around the eccentric wheel rotating shaft 2. The eccentric wheel 32 has a larger radius portion 34 and a smaller radius portion 35. Among them, during the rotation of the eccentric wheel 32 around the eccentric wheel rotating shaft 2, the eccentric wheel 32 can present two positions. In the first position, as Figure 7 shown, the larger radius portion 34 of the eccentric wheel 32 abuts against the proximal end of the slip ring 3 and can push the slip ring 3 to be locked in the locking hole 23, and the locking device 200 is locked. In the second position, as Figure 8 shown, the smaller radius portion 35 of the eccentric wheel 32 abuts against the proximal end of the slip ring 3, and the slip ring 3 is completely released from the locking hole 23 under the elastic force of the elastic element 6, and the locking device 200 is loosened.

[0045] As described above, when the locking device 200 is locked, the main block 11 is fixed, so the scraper connected to the main block 11 is also fixed; when the locking device 200 is loosened, the plug pin 5 can move freely in the arc-shaped second hole 22 of the clamping adjustment block 4, so the main block 21 can pivot around the main shaft 7 within the range defined by the second hole 22, thereby driving the scraper to pivot within a certain range, which is beneficial to the cleaning of the scraper.

[0046] Preferably, as Figure 7 、 Figure 8 shown, the distal end of the slip ring 3 includes a frustum portion 33, which is beneficial to guiding the slip ring 3 into the locking hole 23.

[0047] Preferably, the elastic element 6 is a helical spring sleeved on the bolt 5. One end of the helical spring abuts against the proximal end of the main block 11, and the other end abuts against the slip ring 3.

[0048] Preferably, the mounting hole 30 includes an internal thread, and the proximal end of the bolt 5 includes an external thread. Therefore, the proximal end of the bolt 5 is fixedly connected in the mounting hole 30 by a threaded connection.

[0049] Preferably, the eccentric wheel 32 includes a handle 1 to facilitate the user to rotate the eccentric wheel 32. The eccentric wheel 32 may further include a limiting portion (not shown) for limiting the rotation range of the eccentric wheel 32.

[0050] Preferably, the difference between the first position and the second position of the eccentric wheel 32 is 60° - 180°, such as 90° or 120°. For example, from the first position as shown in Figure 7 , the user rotates the handle 1 clockwise by about 90° to reach the Figure 8 -shown second position. Or, starting from the second position as shown in Figure 8 , the user rotates the handle 1 counterclockwise by about 90° to reach the Figure 7 -shown first position. From the first position as shown in Figure 7 , the user can also rotate the handle 1 counterclockwise by about 90° to reach a second position not shown in the figure, and vice versa.

[0051] The following describes the operation process of the locking device 200 according to the present application.

[0052] When the locking device 200 is in the Figure 7 -shown locked state, the eccentric wheel 32 is in the first position, where the larger radius portion 34 of the eccentric wheel 32 abuts against the proximal end of the slip ring 3, so that the slip ring 3 is kept locked in the locking hole 23 of the clamping adjustment block 4. The elastic element 6 is in a compressed state, and the main block 11 and the scraper are fixed.

[0053] When it is necessary to clean the scraper, the user rotates the handle 1 clockwise or counterclockwise. The large-radius portion of the eccentric wheel 32 no longer abuts against the slip ring 3. Therefore, the slip ring 3 slides on the bolt 5 in the direction away from the locking hole 23 under the elastic force of the elastic element 6 until the eccentric wheel 32 reaches its second position, as shown in Figure 8 . The slip ring 3 is completely disengaged from the locking hole 23, so that the locking state of the locking device 200 is released. The bolt 5 can move freely in the arcuate second hole 22 of the clamping adjustment block 4. Therefore, the main block 11 and the scraper can pivot within the range defined by the second hole 22, facilitating the cleaning of the scraper.

[0054] When the user needs to re-lock the scraper after cleaning the scraper, the user rotates the handle 1 in the reverse direction, so that the eccentric wheel 32 is in the first position, that is, the large-radius part of the eccentric wheel 32 abuts against the slip ring 3, so that the slip ring 3 is locked in the locking hole 23 of the clamping adjustment block 4, the elastic element 6 is in a compressed state, and the main block 11 and the scraper are fixed.

[0055] See Figure 5 、 6 As shown in, the scraper holding mechanism 300 according to the present application includes: a fixed spindle 7; a main block 11 including a through hole 18 therethrough, the spindle 7 passes through the through hole 18, so that the main block 11 can pivot around the spindle 7 within a certain angle range, and the main block 11 further includes a threaded hole 19 parallel to the through hole 18; a scraper clamping device 27 for clamping a scraper (not shown) and mounting the scraper on the main block 11; a clamping adjustment block 4 including a first hole 21 and a second hole 22, the spindle 7 passes through the first hole 21, and the clamping adjustment block 4 can be fixed on the spindle 7, the second hole 22 is an arc-shaped hole and includes a locking hole 23, the distal side of the clamping adjustment block 4 abuts against the proximal side of the main block 11, and the first hole 21 is aligned with the through hole 18 of the main block, when the main block pivots around the spindle 7 passing through the through hole 18, the threaded hole 19 of the main block 11 can always be aligned with the arc-shaped second hole 22; and a locking device 200 according to the present application.

[0056] Wherein, the scraper holding mechanism 300 further includes: a mounting shaft 10 mounted on a frame (not shown); a clamping block 8 mounted on the mounting shaft 10 and including two separated parts; a fastening bolt 9 screwed into the threaded hole of the clamping block 8 for clamping the two parts of the clamping block 8 together, wherein the spindle is fixed on the mounting shaft 10 through the clamping block 8 and extends from the mounting shaft 10.

[0057] Preferably, the scraper clamping device 27 includes: a connecting plate 12 for connecting to the main block 11; an elastic plate 13 mounted on the connecting plate 12 by a plurality of screws 16 for elastically clamping the scraper; and a pressing block 14 mounted on the elastic plate 13 by a plurality of screws 16, wherein a sheet-shaped scraper (not shown) is mounted between the elastic plate 13 and the pressing block 14. Preferably, the main block 11 further includes a recess 20, and the connecting plate 12 of the scraper clamping device 27 is mounted in the recess 20 of the main block 11.

[0058] Preferably, the first hole 21 of the clamping adjustment block 4 includes a slot 28, and the clamping adjustment block 4 further includes a third hole 29 at least partially with internal threads, and the clamping bolt 15 can be threadedly engaged in the third hole 29. When the main shaft 7 is received in the first hole 21, as the clamping bolt 15 is gradually tightened in the third hole 29, the slot 28 elastically narrows, so that the clamping adjustment block 4 can be clamped on the main shaft 7. Preferably, the third hole 29 is perpendicular to the slot 28 and perpendicular to the main shaft 7 passing through the first hole 21.

[0059] The locking device 200 and the scraper holding mechanism 300 according to the present application can quickly lock and release the scraper, facilitating quick adjustment and disassembly, having a good self-locking effect, facilitating the cleaning and maintenance of the scraper, being easy to maintain, and greatly improving the effective operation rate during the production process.

[0060] Although the exemplary embodiments of the present disclosure have been described, those skilled in the art should understand that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included within the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and equivalents of these claims are also included.

Claims

1. A locking device for a scraper holding mechanism, wherein the scraper holding mechanism comprises: Fixed mounted spindle; A main block, comprising a through hole extending therethrough, wherein the main shaft passes through the through hole, the main block is capable of pivoting around the main shaft, and the main block further comprises a threaded hole parallel to the through hole; A clamping adjustment block, comprising a first hole and a second hole, the main shaft passes through the first hole, and the clamping adjustment block can be fixed on the main shaft, the second hole is in an arc shape concentric with the first hole, the second hole comprises a locking hole, wherein the diameter of the locking hole is greater than the width of the rest of the second hole, the distal side of the clamping adjustment block abuts against the proximal side of the main block, and the first hole is aligned with the through hole of the main block; Characterized in that the locking device comprises: A latch, the distal end of which has an external thread and can be threadedly engaged in the threaded hole of the main block, the latch can pass through the arc-shaped second hole of the clamping and adjusting block, and can move freely in the second hole; A slip ring, which is sleeved on the proximal end of the latch and can slide on the latch in the longitudinal direction, and the outer diameter of the slip ring enables the slip ring to be locked in the locking hole of the clamping adjustment block; an elastic component installed between the proximal end of the main block and the slip ring, and when the slip ring is locked in the locking hole, the elastic component is compressed; An eccentric shaft, comprising a mounting hole, in which the proximal end of the latch can be fixedly mounted, and the slip ring is located at the distal side of the eccentric shaft; An eccentric wheel comprises an eccentric hole, wherein the eccentric wheel shaft is installed in the eccentric hole so that the eccentric wheel can rotate around the eccentric wheel shaft, and the eccentric wheel has a larger radius portion and a smaller radius portion, wherein during the rotation of the eccentric wheel around the eccentric wheel shaft, the eccentric wheel can present two positions, in the first position, the larger radius portion of the eccentric wheel abuts against the proximal end of the slip ring and can push the slip ring to lock in the locking hole, and in the second position, the smaller radius portion of the eccentric wheel abuts against the proximal end of the slip ring, and the slip ring is completely released from the locking hole under the elastic force of the elastic component.

2. The locking device according to claim 1, characterized in that: The distal end of the slip ring includes a truncated cone portion.

3. The locking device according to claim 1, characterized in that: The elastic component is a coil spring, which is sleeved on the latch, one end of which abuts against the proximal end of the main block, and the other end of which abuts against the slip ring.

4. The locking device according to claim 1, characterized in that: The mounting hole comprises an internal thread, the proximal end of the plug comprises an external thread, and the proximal end of the plug is fixed in the mounting hole through a threaded connection.

5. The locking device according to claim 1, characterized in that: The eccentric wheel includes a handle.

6. The locking device according to claim 1, characterized in that: The eccentric wheel includes a limiting portion for limiting a rotation range of the eccentric wheel.

7. The locking device according to claim 1, characterized in that: The first position and the second position of the eccentric wheel differ by 60°-180°.

8. The locking device according to claim 7, characterized in that: The first position and the second position of the eccentric wheel differ by 90° or 120°.

9. A scraper holding mechanism, comprising: Fixed mounted spindle; A main block, comprising a through hole extending therethrough, wherein the main shaft passes through the through hole, the main block is capable of pivoting around the main shaft, and the main block further comprises a threaded hole parallel to the through hole; A scraper clamping device, used for clamping the scraper and mounting the scraper on the main block; A clamping adjustment block, comprising a first hole and a second hole, the main shaft passes through the first hole, and the clamping adjustment block can be fixed on the main shaft, the second hole is in an arc shape concentric with the first hole, the second hole comprises a locking hole, wherein the diameter of the locking hole is greater than the width of the rest of the second hole, the distal side of the clamping adjustment block abuts against the proximal side of the main block, and the first hole is aligned with the through hole of the main block; Characterized in that the scraper holding mechanism also includes a locking device according to any one of claims 1-8.

10. The scraper holding mechanism according to claim 9, characterized in that: Also includes: An installation shaft is mounted on the frame; A clamping block, mounted on the mounting shaft, comprising two parts separated from each other; A fastening bolt is tightened in the threaded hole of the clamping block to clamp the two parts of the clamping block together. The main shaft is fixed on the installation shaft through the clamping block and extends from the installation shaft.

11. The scraper holding mechanism according to claim 9, characterized in that: The scraper clamping device comprises: A connecting plate, used for connecting to the main block; an elastic plate mounted on the connecting plate by a plurality of screws; and A pressing block is mounted on the elastic plate through a plurality of screws, wherein a sheet-shaped scraper is mounted between the elastic plate and the pressing block.

12. The scraper holding mechanism according to claim 11, characterized in that: The main block further includes a recessed portion, and the connecting plate of the scraper clamping device is mounted in the recessed portion of the main block.

13. The scraper holding mechanism according to claim 9, characterized in that: The first hole of the clamping adjustment block includes a slot, and the clamping adjustment block also includes a third hole at least partially with internal threads, and a clamping bolt can be threadedly engaged in the third hole.

14. The scraper holding mechanism according to claim 13, characterized in that: The third hole is perpendicular to the slot and perpendicular to the major axis passing through the first hole.

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