Top comb position adjusting mechanism of combing machine

Abstract

The utility model relates to the technical field of wool processing equipment, in particular to a combing machine top comb position adjusting mechanism which comprises a mounting plate and a top comb arranged on the mounting plate and further comprises at least one vertical waist groove formed in the top comb. An adjusting part is detachably mounted between the interior of the vertical waist groove and the mounting plate, and the adjusting part is used after the insertion depth of the top comb is adjusted. Through cooperative use of at least one adjusting part, at least two clamping parts, a plurality of groups of first tooth surfaces, second tooth surfaces and other structures, an operator only needs to positively or reversely screw the supporting shaft to rotate by 90 degrees and pull out or push in the supporting shaft by a certain distance, and a part of the inserting block is always located in the circular groove, so that the inserting block can be conveniently inserted into the circular groove. Therefore, the top comb can be switched between a fixed state and a contact fixed state, so that the insertion depth of the top comb can be adjusted when the two states are switched, and the influence of the adjustment times on the fixing effect of the top comb is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of wool processing equipment, and in particular to a combing machine top comb position adjustment mechanism. Background Technology

[0002] During the combing process, the top comb of the combing machine can block short fibers, knots, and impurities, and improve the separation, uniformity, and parallelism of the fiber layer at the rear end. The top comb is fixed to the bracket by a waist groove and fixing bolts, and the insertion depth of the top comb can be adjusted by adjusting the position of the fixing bolts in the waist groove.

[0003] Because the insertion depth of the top comb of the combing machine is easily affected by changes in temperature and humidity, the insertion depth of the top comb needs to be adjusted synchronously in a timely manner. Therefore, the adjustment frequency of the insertion depth of the top comb is relatively high. The fixing bolts used to fix the top comb are prone to increased wear of the threads due to the increased number of disassemblies, which has a significant impact on the fixing effect of the fixing bolts. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a top comb position adjustment mechanism for a combing machine to solve the problem that the fixing effect of the fixing bolts is easily weakened by the increase of the number of adjustments.

[0005] To achieve the above objectives, this utility model provides a top comb position adjustment mechanism for a combing machine, including a mounting plate and a top comb disposed on the mounting plate. The top comb position adjustment mechanism further includes:

[0006] At least one vertical groove is provided on the top comb, and an adjustment part is detachably installed between the interior of the vertical groove and the mounting plate. The adjustment part is used to fix the top comb on the mounting plate after the insertion depth of the top comb is adjusted.

[0007] At least one set of first tooth surfaces is provided between the vertical waist groove and the adjustment part, and the first tooth surfaces are used to constrain the degree of freedom of the top comb in the vertical direction.

[0008] The two clamping parts disposed on the mounting plate are used to clamp and fix the two end faces of the top comb.

[0009] A set of second tooth surfaces is provided between the top comb end face and the clamping part, the second tooth surfaces being used to further constrain the top comb's degree of freedom in the vertical direction.

[0010] Preferably, the adjustment unit includes:

[0011] A circular groove is provided inside the mounting plate, and a horizontal groove is provided between the circular groove and one of the vertical surfaces of the mounting plate.

[0012] A plug-in block fitted inside the circular groove.

[0013] A support shaft is inserted between the horizontal waist groove and the vertical waist groove, and one end of the support shaft is fixed on the insertion block.

[0014] A limiting block is inserted in the vertical waist groove, and the limiting block is rotatably sleeved on the outer end of the support shaft away from the insertion block.

[0015] A blocking block is fixed on the remaining end surface of the support shaft.

[0016] Preferably, the insertion block is matched with the horizontal waist groove, and the thickness of the insertion block is greater than the width of the first tooth surface.

[0017] Preferably, the axial depth of the circular groove is matched with the thickness of the insertion block, and the diameter of the circular groove is matched with the length of the vertical section of the insertion block.

[0018] Preferably, the first tooth surface includes a female tooth surface vertically arranged on one vertical surface of the vertical waist groove and a male tooth surface vertically arranged on one vertical surface of the limiting block, and the male tooth surface is engaged with the female tooth surface.

[0019] Preferably, the clamping part includes:

[0020] A sliding groove is arranged on the arc-shaped inner wall of the circular groove, a through hole is arranged on the end surface of the inner wall of the sliding groove, and a limiting groove is arranged between the end surface of the mounting plate and the inner part of the through hole.

[0021] An L-shaped clamping arm is inserted in the limiting groove.

[0022] A sliding block is slidably sleeved in the sliding groove.

[0023] A connecting rod is axially inserted in the through hole, and two ends of the connecting rod are fixed on the opposite surfaces of the sliding block and the L-shaped clamping arm, respectively.

[0024] A spring is arranged between the outer surface of the sliding block and the end surface of the sliding groove.

[0025] Preferably, the spring is slidably sleeved on the outer surface of the connecting rod, and two ends of the spring abut against the sliding block and the end surface of the sliding groove away from the circular groove, respectively.

[0026] Preferably, the second tooth surface includes an end tooth surface vertically arranged on the end surface of the top comb, and a counter tooth surface is vertically arranged on the vertical surface of the L-shaped clamping arm facing the end surface of the top comb, the end tooth surface is engaged with the counter tooth surface, and the length of the end tooth surface is greater than or equal to the length of the female tooth surface.

[0027] The utility model discloses the beneficial effects of:

[0028] This invention utilizes the cooperative use of at least one adjusting part, at least two clamping parts, and several sets of first and second tooth surfaces. By rotating the support shaft 90°, it indirectly pushes the L-shaped clamping block away from the second tooth surface on the top comb. Simultaneously, the support shaft and the limiting block are pulled outward a certain length from the vertical groove, causing the limiting block to disengage from the inside of the vertical groove. This allows the bottom of the insertion block to be positioned within the circular groove and press against the slider, enabling the top comb to slide up and down to adjust its insertion depth. After adjusting the insertion depth, the support shaft can be pushed to ensure the insertion block is fully positioned within the circular groove. A 90° reverse rotation allows the two sets of first tooth surfaces and the two sets of second tooth surfaces to mesh with each other, fixing the top comb to the mounting plate. The operation is simple and efficient, greatly reducing the impact of adjustment frequency on the top comb fixing effect and significantly extending the service life of the adjusting part. Furthermore, it allows the adjusting part and the clamping part to be interconnected, achieving double fixing of the top comb and improving the fixing effect and stability of the top comb after fixing. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0031] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ;

[0032] Figure 3 This is a three-dimensional illustration of the present invention. Figure 3 ;

[0033] Figure 4 This is a three-dimensional illustration of the present invention. Figure 4 ;

[0034] Figure 5 This is a three-dimensional illustration of the present invention. Figure 5 ;

[0035] Figure 6 This is a perspective view of the second embodiment of the present invention.

[0036] The diagram is marked as follows:

[0037] 1, mounting plate; 2, top comb; 3, vertical waist groove; 4, adjusting part; 41, horizontal waist groove; 42, round groove; 43, plug-in block; 44, support shaft; 45, limiting block; 46, blocking block; 5, clamping part; 51, limiting groove; 52, sliding groove; 53, perforation; 54, L-shaped clamping arm; 55, sliding block; 56, connecting rod; 57, spring; 6, first tooth surface; 7, second tooth surface. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with specific examples.

[0039] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by those skilled in the art to which the present application belongs. The "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0040] As shown in Figures 1 to 4 and Figure 6 A top comb position adjusting mechanism of a combing machine, comprising a mounting plate 1 and a top comb 2 arranged on the mounting plate 1, the top comb position adjusting mechanism of the combing machine further comprises:

[0041] At least one vertical waist groove 3 is arranged on the top comb 2, and an adjusting part 4 is detachably arranged between the inside of the vertical waist groove 3 and the mounting plate 1, the adjusting part 4 is used to fix the top comb 2 on the mounting plate 1 after adjusting the insertion depth of the top comb 2.

[0042] Two clamping portions 5 are arranged on the mounting plate 1, and the two clamping portions 5 are used for clamping and fixing the two end faces of the top comb 2. The two clamping portions 5 are located on the two sides of the adjusting portion 4. In this way, when the fixed connection between the top comb 2 and the mounting plate 1 is released, one adjusting portion 4 is controlled to synchronously drive the two clamping portions 5 to operate, and the two clamping portions 5 are separated from the two end faces of the top comb 2 at the same time, so as to adjust the insertion depth of the top comb 2 along the length direction of the vertical waist groove 3. After the insertion depth of the top comb 2 is adjusted, one adjusting portion 4 is controlled to fix the top comb 2 on the mounting plate 1. At the same time, the adjusting portion 4 can synchronously drive the two clamping portions 5 to clamp the two end faces of the top comb 2, and the fixed connection between the mounting plate 1 and the top comb 2 is further improved.

[0043] As shown in the second embodiment shown in Figures 1 to 4 , two vertical waist grooves 3 are arranged on the top comb 2, and the adjusting portion 4 is detachably arranged between the inside of the vertical waist groove 3 and the mounting plate 1. The adjusting portion 4 is used for fixing the top comb 2 on the mounting plate 1 after the insertion depth of the top comb 2 is adjusted.

[0044] Two clamping portions 5 are arranged on the mounting plate 1, and the two clamping portions 5 are used for clamping and fixing the two end faces of the top comb 2. The two adjusting portions 4 are located between the two clamping portions 5, and the clamping portion 5 is located between the adjusting portion 4 and the end face of the mounting plate 1, so that one adjusting portion 4 corresponds to one clamping portion 5. In this way, when the fixed connection between the top comb 2 and the mounting plate 1 is released, one adjusting portion 4 is controlled to synchronously drive the two clamping portions 5 to operate, and the two clamping portions 5 are separated from the two end faces of the top comb 2 at the same time, so as to adjust the insertion depth of the top comb 2 along the length direction of the vertical waist groove 3. After the insertion depth of the top comb 2 is adjusted, one adjusting portion 4 is controlled to fix the top comb 2 on the mounting plate 1. At the same time, the adjusting portion 4 can synchronously drive the two clamping portions 5 to clamp the two end faces of the top comb 2, and the fixed connection between the mounting plate 1 and the top comb 2 is further improved.

[0045] At least one set of first tooth surfaces 6 is arranged between the vertical waist groove 3 and the adjusting portion 4, and the first tooth surface 6 is used for restricting the freedom degree of the top comb 2 in the vertical direction.

[0046] A set of second tooth surfaces 7 is arranged between the end face of the top comb 2 and the clamping portion 5, and the second tooth surface 7 is used for further restricting the freedom degree of the top comb 2 in the vertical direction.

[0047] As shown in the second embodiment shown in Figures 2 to 6 , the adjusting portion 4 comprises:

[0048] A circular groove 42 is arranged in the inside of the mounting plate 1, and a transverse waist groove 41 is arranged in communication between the circular groove 42 and one vertical face of the mounting plate 1.

[0049] The plug-in block 43 is sleeved in the circular groove 42, and the two ends of the plug-in block 43 outside are circular arc surfaces, and the two circular arc surfaces are vertical surfaces.

[0050] The support shaft 44 is plugged between the horizontal waist groove 41 and the vertical waist groove 3, and one end of the support shaft 44 is fixedly arranged on the plug-in block 43.

[0051] The limiting block 45 is plugged in the vertical waist groove 3, and the limiting block 45 is rotatably sleeved on the end of the support shaft 44 away from the plug-in block 43.

[0052] The blocking block 46 is fixedly arranged on the remaining end surface of the support shaft 44.

[0053] In this way, the clamping part 5 is manually pulled first, so that the clamping part 5 is separated from the end surface of the top comb 2 and kept in a separated state, then the plug-in block 43 is sequentially inserted through the vertical waist groove 3 on the top comb 2 and the horizontal waist groove 41 on the mounting plate 1, finally the plug-in block 43 is completely inserted in the circular groove 42, then the hand pulling the clamping part 5 is released, at this time, the limiting block 45 is completely inserted in the vertical waist groove 3, then the blocking block 46 is held and twisted to be deflected by 90°, so that the blocking block 46 drives the support shaft 44 and the plug-in block 43 to be synchronously deflected by 90°, so that the clamping part 5 is reset and abuts against the vertical surface outside the plug-in block 43, so that the clamping part 5 restricts the freedom of the plug-in block 43 in the circumferential direction, and the circular groove 42 restricts the freedom of the plug-in block 43 in the radial direction of the circular groove 42 and in the axial direction of the support shaft 44, so that the top comb 2 is fixedly installed on the mounting plate 1 through the adjusting part 4, and during the adjustment, only the blocking block 46 needs to be twisted by 90°, so that the plug-in block 43 is reset to the state corresponding to the horizontal waist groove 41, then the blocking block 46 is pulled outwards, so that the limiting block 45 is separated from the vertical waist groove 3, and a part of the plug-in block 43 is still located in the circular groove 42, so that the insertion depth of the top comb 2 can be adjusted along the length direction of the vertical waist groove 3.

[0054] As shown in Figure 3 , Figure 4 and Figure 5 , the plug-in block 43 is matched with the horizontal waist groove 41, and the thickness of the plug-in block 43 is greater than the width of the first tooth surface 6, in this way, when the contact between the top comb 2 and the mounting plate 1 is in a fixed connection state, the first tooth surface 6 on the limiting block 45 is separated from the first tooth surface 6 on the inner wall of the vertical waist groove 3, and a part of the plug-in block 43 can still stay in the circular groove 42 and abut against the clamping part 5, so that the clamping state of the clamping part 5 to the end surface of the top comb 2 is released and kept.

[0055] The axial depth of the circular groove 42 matches the thickness of the insertion block 43, and the diameter of the circular groove 42 matches the length of the vertical cross section of the insertion block 43, so that when the insertion block 43 is inside the circular groove 42, the circular groove 42 can constrain the freedom of the insertion block 43 in the radial direction of the circular groove 42 and in the axial direction of the support shaft 44 without the insertion block 43 corresponding to the transverse waist groove 41.

[0056] As shown in Figure 1 and Figure 5 , a set of first tooth surfaces 6 includes a female tooth surface vertically arranged on one of the vertical surfaces inside the vertical waist groove 3 and a male tooth surface vertically arranged on one of the vertical surfaces outside the limiting block 45, and the male tooth surface is engaged with the female tooth surface. In this way, when the limiting block 45 is inserted inside the vertical waist groove 3, the freedom of the top comb 2 in the length direction of the vertical waist groove 3 can be constrained by the engagement of the male tooth surface and the female tooth surface, and by adjusting the position of the insertion block 43 in the circular groove 42, the circular groove 42 can constrain the freedom of the insertion block 43 except the circumferential direction, so as to fix the top comb 2 on the mounting plate 1, which is simple and efficient, and greatly reduces the influence of the adjustment times on the wear of the first tooth surface 6, thereby reducing the influence of the adjustment times on the fixing effect of the top comb 2.

[0057] As shown in Figure 1 , Figure 2 , Figure 5 , Figure 6 , the clamping part 5 includes:

[0058] The sliding groove 52 is arranged on the arc-shaped inner wall of the circular groove 42, the inner wall end face of the sliding groove 52 is provided with a through hole 53, and the end face of the mounting plate 1 is in communication with the inside of the through hole 53.

[0059] The L-shaped clamping arm 54 is inserted into the limiting groove 51.

[0060] The sliding block 55 is slidingly sleeved in the sliding groove 52.

[0061] The connecting rod 56 is axially inserted into the through hole 53, and the two ends of the connecting rod 56 are respectively fixed on the opposite surfaces of the sliding block 55 and the L-shaped clamping arm 54.

[0062] The spring 57 is arranged between the outer surface of the sliding block 55 and the end face of the sliding groove 52.

[0063] The spring 57 is slidingly sleeved on the outside of the connecting rod 56, and the two ends of the spring 57 abut against the sliding block 55 and the end face of the sliding groove 52 away from the circular groove 42, respectively.

[0064] The second set of tooth surfaces 7 comprises end tooth surfaces vertically arranged on the end surface of the top comb 2, and the vertical surfaces on the L-shaped clamping arm 54 towards the end surface of the top comb 2 are vertically arranged with the counter tooth surfaces, the end tooth surfaces are engaged with the counter tooth surfaces, and the length of the end tooth surfaces is greater than or equal to the length of the female tooth surface. In this way, when the adjusting part 4 fixes the top comb 2 on the mounting plate 1, the sliding block 55 is in contact with the vertical surface between the two circular arc surfaces of the plug-in block 43 under the elastic force of the spring 57, so as to constrain the freedom of the plug-in block 43 in the circumferential direction, and the counter tooth surfaces on the L-shaped clamping arm 54 are engaged with the end tooth surfaces on the end surface of the top comb 2, which can further constrain the fixing effect of the top comb 2 in the length direction of the vertical slot 3, and the whole operation process is simple and efficient.

[0065] Working principle: when the top comb 2 is installed, first manually pull the L-shaped clamping arm 54 to make the connecting rod 56 and the sliding block 55 move synchronously and compress the spring 57, then insert the plug-in block 43 through the vertical slot 3 on the top comb 2 and the horizontal slot 41 on the mounting plate 1 in turn, finally insert the plug-in block 43 into the circular groove 42, then release the hand pulling the L-shaped clamping arm 54, under the elastic force of the spring 57, the L-shaped clamping arm 54, the connecting rod 56 and the sliding block 55 reset, and the end surface of the sliding block 55 is in contact with the outside of the plug-in block 43, at this time, the limiting block 45 is completely inserted into the vertical slot 3, and the male tooth surface is engaged with the female tooth surface, then hold the blocking block 46 and twist it 90°, which drives the supporting shaft 44 and the plug-in block 43 to rotate 90° synchronously, at this time, the end surface of the sliding block 55 is in contact with the vertical surface outside the plug-in block 43, so that the clamping part 5 restricts the freedom of the plug-in block 43 in the circumferential direction, and the circular groove 42 restricts the freedom of the plug-in block 43 in the radial direction of the circular groove 42 and in the axial direction of the supporting shaft 44, at the same time, the tooth surface on the L-shaped clamping arm 54 is engaged with the end tooth surface on the top comb 2, which further improves the fixed connection effect between the top comb 2 and the mounting plate 1, when the insertion depth of the top comb 2 needs to be adjusted, pinch the blocking block 46 and twist it 90°, which drives the plug-in block 43 to rotate 90° synchronously, in this process, the rotation of the plug-in block 43 will push the sliding block 55 away from the axis of the circular groove 42, and can synchronously push the connecting rod 56 and the L-shaped clamping arm 54 to move, so that the tooth surface is separated from the end tooth surface, and the spring 57 is compressed, after the plug-in block 43 corresponds to the horizontal slot 41, the blocking block 46, the supporting shaft 44 and the plug-in block 43 can be pulled along the axial direction of the supporting shaft 44 until the male tooth surface is separated from the female tooth surface, at this time, the plug-in block 43 still remains a part in the circular groove 42 and keeps pushing the sliding block 55, so that the top comb 2 can be slid along the length direction of the vertical slot 3 to adjust the insertion depth of the top comb 2, after the insertion depth of the top comb 2 is adjusted, the blocking block 46 is pushed along the axial direction of the supporting shaft 44, which drives the supporting shaft 44, the limiting block 45 and the plug-in block 43 to move synchronously until the plug-in block 43 is completely located in the circular groove 42, at this time, the limiting block 45 is inserted into the vertical slot 3, and the male tooth surface is completely engaged with the female tooth surface, the blocking block 46 is twisted again, which drives the supporting shaft 44 and the plug-in block 43 to rotate 90° synchronously, the sliding block 55 resets under the elastic force of the spring 57 and is in contact with the vertical surface between the two circular surfaces of the plug-in block 43, in order to restrict the freedom of the plug-in block 43 in the circumferential direction, at this time, the tooth surface on the L-shaped clamping arm 54 is engaged with the end tooth surface on the top comb 2, which further improves the fixing effect of the top comb 2, and during the whole operation process, the relative movement between the male tooth surface and the female tooth surface is sliding along the groove direction of the female tooth surface, the sliding wear is less affected by the number of adjustment operations, and the relative movement between the tooth surface and the end tooth surface is moving along the direction perpendicular to the end surface of the top comb 2, the friction and wear between them can be ignored, so the influence of the number of adjustments on wear can be greatly reduced.And reduce the influence of wear on the fixing effect of the top comb 2, improve the fixing effect of the top comb 2 in long time use and multiple adjustment operation.

[0066] Those skilled in the art will understand that the above discussion of any of the embodiments is merely exemplary in nature and is not intended to imply that the scope of the present application, including the claims, is limited to these examples; the above embodiments or technical features among different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0067] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications and variations are intended to be encompassed by the appended claims.

Claims

1. A comb top position adjustment mechanism for a combing machine, comprising a mounting plate (1) and a top comb (2) arranged on the mounting plate (1), characterized in that, The comb top position adjusting mechanism further comprises: At least one vertical slot (3) is arranged on the comb top (2), and an adjusting part (4) is detachably arranged between the inside of the vertical slot (3) and the mounting plate (1), which is used to fix the comb top (2) on the mounting plate (1) after adjusting the insertion depth of the comb top (2); At least one set of first tooth surfaces (6) is arranged between the vertical slot (3) and the adjusting part (4), which is used to constrain the freedom of the comb top (2) in the vertical direction; Two clamping parts (5) are arranged on the mounting plate (1), which are used to clamp and fix the two end faces of the comb top (2); A set of second tooth surfaces (7) is arranged between the end face of the comb top (2) and the clamping part (5), which is used to further constrain the freedom of the comb top (2) in the vertical direction.

2. A comb top position adjustment mechanism according to claim 1, characterised in that, The adjusting part (4) comprises: A circular groove (42) is arranged in the inside of the mounting plate (1), and a transverse slot (41) is arranged in communication between the circular groove (42) and one of the vertical faces of the mounting plate (1); A plug-in block (43) is sleeved in the circular groove (42); A support shaft (44) is inserted between the transverse slot (41) and the inside of the vertical slot (3), and one end of the support shaft (44) is fixed on the plug-in block (43); A limiting block (45) is inserted into the vertical slot (3), and the limiting block (45) is rotatably sleeved on the outside of the support shaft (44) away from the plug-in block (43); A blocking block (46) is fixed on the remaining end face of the support shaft (44).

3. A comb top position adjustment mechanism according to claim 2, characterised in that, The plug-in block (43) matches the transverse slot (41), and the thickness of the plug-in block (43) is greater than the width of the first tooth surface (6).

4. A comb top position adjustment mechanism according to claim 3, characterised in that, The axial depth of the circular groove (42) matches the thickness of the plug-in block (43), and the diameter of the circular groove (42) matches the length of the vertical section of the plug-in block (43).

5. A comb top position adjustment mechanism according to claim 4, characterised in that, A set of the first tooth surfaces (6) comprises a female tooth surface vertically arranged on one of the vertical faces of the vertical slot (3) and a male tooth surface vertically arranged on one of the vertical faces of the limiting block (45), and the male tooth surface is engaged with the female tooth surface.

6. A comb top position adjustment mechanism according to claim 2, characterised in that, The clamping part (5) comprises: A sliding groove (52) is arranged on the arc-shaped inner wall of the circular groove (42), a through hole (53) is arranged on the inner wall end face of the sliding groove (52), and a limiting groove (51) is arranged in communication between the end face of the mounting plate (1) and the inside of the through hole (53); An L-shaped clamping arm (54) is inserted into the limiting groove (51); A sliding block (55) is slidably sleeved in the sliding groove (52); A connecting rod (56) is axially inserted into the through hole (53), and two ends of the connecting rod (56) are fixed on the opposite faces of the sliding block (55) and the L-shaped clamping arm (54), respectively; A spring (57) is arranged between the outside of the sliding block (55) and the end face of the sliding groove (52).

7. A comb top position adjustment mechanism according to claim 6, characterised in that, The spring (57) is sleeved outside the connecting rod (56), and two ends of the spring (57) abut against the slider (55) and the end face of the sliding groove (52) away from the circular groove (42) respectively.

8. A comb top position adjustment mechanism according to claim 7, characterised in that, A set of the second tooth surfaces (7) comprises an end tooth surface vertically arranged on the end face of the top comb (2), and a counter tooth surface vertically arranged on the vertical face of the L-shaped clamping arm (54) towards the end face of the top comb (2), the end tooth surface is engaged with the counter tooth surface, and the length of the end tooth surface is greater than or equal to the length of the female tooth surface.

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