Shearing device and computerized embroidery machine

Abstract

The utility model discloses a shearing device and a computerized embroidery machine, the device comprises a scissors assembly and a bush-hook assembly, and the scissors assembly and the bush-hook assembly are mutually independent. The scissor assembly comprises a scissor piece and a first telescopic piece, and the movable end of the first telescopic piece drives the scissor piece to move so that the scissor piece can have a shearing position and a scissor containing position. The bush-hook assembly comprises a bush-hook and a second telescopic piece, and the movable end of the second telescopic piece drives the bush-hook to move so that the bush-hook can have a thread hooking position and a bush-hook storage position. Movement of the scissors piece and movement of the bush-hook are independent of each other and do not affect each other. The shear part and the bush-hook can move according to a preset track, so that the shear part and the bush-hook can be matched to automatically shear ropes, silk ribbons and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to computer embroidery machine technical field especially, relates to a kind of shearing device and computer embroidery machine. BACKGROUND

[0002] Rope embroidery machine is used for fixing embroidery rope on carrier by thin embroidery thread. Discontinuous patterns are embroidered on the carrier, and a transition thread and a ground thread will appear between the discontinuous patterns. The transition thread and the ground thread need to be cut by a special scissors after the patterns are embroidered. The manual work is heavy, and it is easy to miss cutting or cut incorrectly or to break the ground thread, causing the ground thread to rebound and requiring re-threading. In addition, the rope and the ground thread must be cut by hand after a pattern is embroidered, otherwise the embroidered carrier cannot be removed for the next embroidery. SUMMARY

[0003] The present application aims to provide a shearing device and a computer embroidery machine, at least for improving the cooperation precision of the scissors and the hook knife and automatically shearing.

[0004] The utility model provides a kind of shearing device, comprising: scissors assembly and hook knife component, the scissors assembly and the hook knife component are independent of each other.

[0005] The scissors assembly includes a scissors and a first telescopic member. The first telescopic member is inclined relative to the vertical direction. The active end of the first telescopic member reciprocates in its inclined direction. The active end of the first telescopic member drives the scissors to move, so that the scissors has a shearing position and a scissors storage position.

[0006] The hook knife component includes a hook knife and a second telescopic member. The second telescopic member is inclined relative to the vertical direction. The active end of the second telescopic member reciprocates in its inclined direction. The active end of the second telescopic member drives the hook knife to move, so that the hook knife has a hooking position and a hook knife storage position.

[0007] As an implementation manner, the scissors has a first direction degree of freedom, a second direction degree of freedom and a third direction degree of freedom. In the first direction degree of freedom, the scissors swings in the up-down direction and hovers at any position. In the second direction degree of freedom, the scissors swings in the left-right direction and hovers at any position. In the third direction degree of freedom, the scissors can rotate and hover at any position.

[0008] The hook knife has a fourth direction degree of freedom, which is the same as the first direction degree of freedom or the second direction degree of freedom.

[0009] As an implementation, the scissor assembly further comprises a first adjusting member, a second adjusting member and a third adjusting member,

[0010] The first adjusting member has a first end and a second end opposite to the first end, the second end swings in the up-down direction relative to the first end. The second adjusting member has a third end and a fourth end opposite to the third end, the third end is connected to the second end, and the fourth end swings in the left-right direction relative to the third end.

[0011] The third adjusting member is connected to the fourth end, and the third adjusting member can rotate, and the scissor member is connected to the third adjusting member.

[0012] As an implementation, a first through hole is provided on the first end, two second through holes are provided on the second end and arranged coaxially and spaced apart,

[0013] A third through hole is provided on the third end, the third end is inserted into the gap between the two second through holes, and the second through hole and the third through hole are coaxially arranged;

[0014] The fourth end is a threaded shaft, a fourth threaded hole is provided on the third adjusting member and passes through the fourth end, and the threaded shaft is threadedly connected with the fourth threaded hole.

[0015] As an implementation, the threaded shaft forms a stop protrusion along its circumference, the stop protrusion cooperates with the third adjusting member to limit the threaded shaft from being separated from the fourth threaded hole.

[0016] As an implementation, the scissor member further comprises a blade tip protection member. The scissor member has two scissor blades approaching or moving away from each other, and the two scissor blades are arranged in an inclined manner so that the two scissor blades are arranged in an up-down manner and the tips of the two scissor blades are downward. The blade tip protection member comprises a support portion and a raised portion, and the tip of the downwardly arranged scissor blade is close to the connection position of the support portion and the raised portion.

[0017] As an implementation, the hook blade assembly further comprises a fixed seat, a second support frame and a guide rod, the fixed end of the second telescopic member is connected to the fixed seat, and the guide rod passes through the fixed seat. The length direction of the guide rod is parallel to the telescopic direction of the movable end of the second telescopic member, and the guide rod guides the movable end of the second telescopic member to move along its length.

[0018] The fixed seat is movably connected to the second support frame, so that the hook blade swings in the up-down or left-right direction and hovers at any position.

[0019] As a possible implementation, the hook-knife assembly further comprises a first hinged seat and a second hinged seat which are hinged to each other, the movable end of the second telescopic member is connected to the first hinged seat, and the guide rod passes through the first hinged seat. The hook-knife is connected to the second hinged seat, and the second hinged seat is provided with a protruding column which passes through the first hinged seat, and the protruding column is located between the guide rod and the movable end of the second telescopic member.

[0020] When the movable end of the second telescopic member is retracted, the second hinged seat is close to the fixed seat, until the protruding column abuts against the fixed seat, so that the hooking line part of the hook-knife is raised upward.

[0021] As a possible implementation, a reset spring is sleeved on the protruding column.

[0022] The utility model also provides a computer embroidery machine which comprises the above-mentioned shearing device.

[0023] The movement of the scissors member and the movement of the hook-knife are independent of each other, and the two do not affect each other. The movement trajectories of the scissors member and the hook-knife can move according to preset trajectories, which helps the two to automatically complete the actions of cutting ropes and ribbons. The second end of the first adjusting member is swung around the first end, so that the position of the scissors member in the up-down direction can be adjusted. The fourth end of the second adjusting member is swung around the third end, so that the position of the scissors member in the front-back direction can be adjusted. The third adjusting member is sleeved on the fourth end part, and the third adjusting member can rotate, so as to further adjust the position of the scissors member. By adjusting the degrees of freedom of the scissors member in three directions, the scissors member can be accurately positioned at a preset position, which helps the accurate cooperation of the scissors member and the hook-knife and the completion of the shearing action. BRIEF DESCRIPTION OF DRAWINGS

[0024] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the accompanying drawings:

[0025] Figure 1 A structural schematic view of a scissors assembly provided by the utility model embodiment is shown in the figure;

[0026] Figure 2 An exploded schematic view of a scissors assembly provided by the utility model embodiment is shown in the figure;

[0027] Figure 3 A connection structure schematic view between the first adjusting member, the second adjusting member and the third adjusting member provided by the utility model embodiment is shown in the figure;

[0028] Figure 4 A structural schematic view of a blade protection member provided by the utility model embodiment is shown in the figure;

[0029] Figure 5The utility model provides a main view schematic drawing of hook sword subassembly provided by the embodiment of the utility model;

[0030] Figure 6 The utility model provides a structure schematic drawing of hook sword subassembly provided by the embodiment of the utility model;

[0031] Figure 7 The utility model provides a partial schematic drawing of hook sword subassembly provided by the embodiment of the utility model;

[0032] Figure 8 The utility model provides a shearing device installation schematic drawing provided by the embodiment of the utility model;

[0033] Scissors subassembly 10, scissors piece 11, scissors blade 111, first adjusting part 12, first end 121, second end 122, second adjusting part 13, third end 131, fourth end 132, stop protrusion 133, third adjusting part 14, fourth threaded hole 141, hinged part 15, first hinged swing lever 151, second hinged swing lever 152, first telescopic part 16, support rod 17, first support frame 18, sword tip protection part 19, upwarping 191, support part 192, connecting part 193;

[0034] Hook sword subassembly 20, second telescopic part 21, guide rod 22, hook sword 23, hook line part 231, fixed base 24, second support frame 25, first hinged seat 26, second hinged seat 27, convex column 28. DETAILED DESCRIPTION

[0035] The application will be further described below in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and not to limit the utility model. In addition, it should be noted that only parts related to the utility model are shown in the drawings for ease of description.

[0036] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and embodiments.

[0037] At least refer to Figures 1-8 The utility model example provides a kind of shearing device, which is applied to computer embroidery machine.

[0038] Shearing device includes: scissors subassembly 10 and hook sword subassembly 20, scissors subassembly 10 and hook sword subassembly 20 are independent of each other. Scissors subassembly 10 and hook sword subassembly 20 can be located below girder, as shown in Figure 8 .

[0039] The scissor assembly 10 comprises a scissor piece 11 and a first telescopic piece 16, the first telescopic piece 16 is arranged obliquely relative to the vertical direction, and the movable end of the first telescopic piece 16 reciprocates in the oblique direction, and the movable end of the first telescopic piece 16 drives the scissor piece 11 to move so that the scissor piece 11 has a shearing position and a scissor storage position.

[0040] The hook-knife assembly 20 comprises a hook-knife 23 and a second telescopic piece 21, the second telescopic piece 21 is arranged obliquely relative to the vertical direction, and the movable end of the second telescopic piece 21 reciprocates in the oblique direction, and the movable end of the second telescopic piece 21 drives the hook-knife 23 to move so that the hook-knife 23 has a hooking position and a hook-knife storage position.

[0041] In actual application, the first telescopic piece 16 and the second telescopic piece 21 are the same in structure. The first telescopic piece 16 and the second telescopic piece 21 can be an electric push rod, a pneumatic push rod, or a hydraulic push rod.

[0042] The first telescopic piece 16 drives the scissor piece 11 to switch between the shearing position and the scissor storage position, and the second telescopic piece 21 drives the hook-knife 23 to switch between the hooking position and the hook-knife storage position. The movement of the scissor piece 11 and the movement of the hook-knife 23 are independent of each other and do not affect each other. The movement trajectories of the scissor piece 11 and the hook-knife 23 can move according to preset trajectories, which helps the two to automatically complete the tasks of cutting ropes and ribbons.

[0043] As an implementation manner, the scissor piece 11 has a first direction degree of freedom, a second direction degree of freedom, and a third direction degree of freedom. In the first direction degree of freedom, the scissor piece 11 swings in the up-down direction and hovers at any position. In the second direction degree of freedom, the scissor piece 11 swings in the left-right direction and hovers at any position. In the third direction degree of freedom, the scissor piece 11 can rotate and hover at any position.

[0044] The hook-knife 23 has a fourth direction degree of freedom, which is the same as the first direction degree of freedom or the same as the second direction degree of freedom.

[0045] As shown in Figure 2 and Figure 3 The scissor assembly 10 further comprises a first adjusting piece 12, a second adjusting piece 13, a third adjusting piece 14, a hinged piece 15, and a first support frame 18.

[0046] The first support frame 18 is a bent plate, and the first telescopic piece 16 is connected to the first support frame 18, so that the first telescopic piece 16 is arranged obliquely relative to the vertical direction, and the movable end of the first telescopic piece 16 is downward. The hinged piece 15 comprises a first hinged swing rod 151 and a second hinged swing rod 152, one end of the first hinged swing rod 151 is hinged to the movable end of the first telescopic piece 16, and the other end is hinged to one end of the second hinged swing rod 152.

[0047] The first adjusting member 12 can be but not limited to a rod or a long strip plate. The first adjusting member 12 comprises a first end 121 and a second end 122 oppositely arranged. A first through hole is arranged at the first end 121, and the axis of the first through hole extends in the front-rear direction. Two second through holes are arranged at the second end 122, and the two second through holes are coaxially arranged and spaced in the up-down direction. The other end of the second hinged swing rod 152 is connected with the first through hole through a first bolt. When the first bolt is loosened, the second end of the first adjusting member 12 swings around the first end, and as shown in a of Figure 3 , the first adjusting member 12 swings to a preset position in the up-down direction, and then the first bolt is tightened.

[0048] The second adjusting member 13 can be but not limited to a rod or a long strip plate. The second adjusting member 13 comprises a third end 131 and a fourth end 132 oppositely arranged. A third through hole is arranged at the third end 131, and the axis of the third through hole extends in the up-down direction. The fourth end 132 is a threaded shaft, and the axis of the threaded shaft extends in the left-right direction. The third end 131 matches the gap between the two second through holes, the third end 131 is inserted into the gap between the two second through holes, and the second through hole and the third through hole are coaxially arranged. A second bolt passes through the second through hole and the third through hole to connect the third end 131 and the second end 122. When the second bolt is loosened, the fourth end of the second adjusting member 13 swings around the third end, and as shown in b of Figure 3 , the second adjusting member 13 swings to a preset position in the front-rear direction, and then the second bolt is tightened.

[0049] The third adjusting member 14 can be but not limited to a rectangular plate or a disc. The third adjusting member 14 is provided with a fourth threaded hole 141, and the axis of the fourth threaded hole 141 extends in the left-right direction. The fourth end 132 is arranged in the fourth threaded hole 141, and the two are threadedly matched. As shown in c of Figure 3 , the third adjusting member 14 can rotate 360° in space. The scissors member 11 is installed on the third adjusting member 14.

[0050] In addition, as shown in Figure 3 , in order to avoid the third adjusting member 14 from being separated from the fourth end 132, a stop protrusion 133 is arranged on the fourth end 132, that is, the threaded shaft forms the stop protrusion 133 along the circumferential direction. The stop protrusion 133 is stop matched with the third adjusting member 14, so that the fourth end 132 can be prevented from being separated from the fourth threaded hole 141.

[0051] Therefore, by swinging the second end of the first adjusting member 12 around the first end, the position of the scissor member 11 in the up-down direction can be adjusted; by swinging the fourth end of the second adjusting member 13 around the third end, the position of the scissor member 11 in the front-back direction can be adjusted; and by sleeving the third adjusting member 14 on the fourth end portion 132, the third adjusting member 14 can rotate, thereby further adjusting the position of the scissor member 11. By adjusting the degrees of freedom of the scissor member 11 in three directions, the scissor member 11 can be accurately positioned at a preset position, which helps the scissor member 11 accurately cooperate with the hook blade 23 to complete the shearing action.

[0052] As an implementation manner, the scissor assembly 10 further comprises a blade tip protection member 19. The scissor member 11 has two scissor blades 111 that are close to or away from each other. The two scissor blades 111 are obliquely arranged, and the tips of the two scissor blades 111 are downwardly arranged.

[0053] As shown in Figure 2 and Figure 4 , the scissor member 11 is obliquely arranged relative to the vertical direction. The scissor member 11 has two scissor blades 111 that are close to or away from each other. The two scissor blades 111 are obliquely arranged, and the tips of the two scissor blades 111 are downwardly arranged.

[0054] The blade tip protection member 19 is a bent plate, comprising a connecting portion 193, a supporting portion 192 and a raised portion 191. The connecting portion 193 is connected to the scissor member 11. The supporting portion 192 can be horizontally arranged or obliquely arranged relative to the horizontal direction. The raised portion 191 is upwardly raised. The tips of the downwardly arranged scissor blades 111 are close to the connecting position of the raised portion 191 and the supporting portion 192. When the scissor member 11 is switched from the scissor storage position to the shearing position, the blade tip protection member 19 isolates the tips of the scissor blades 111 from the fabric on the embroidery frame, thereby preventing the tips of the scissor blades 111 from accidentally piercing the fabric.

[0055] In actual application, the mutual approach and departure between the two scissor blades 111 is realized by pneumatic, so the scissor member 11 is connected with a gas path pipe. In order to ensure the stable operation between the two scissor blades 111, the stability of the connection between the gas path pipe and the scissor member 11 needs to be ensured.

[0056] Based on this, as shown in Figure 2 , the scissor assembly 10 further comprises a support rod 17 connected to the first support frame 18. The length direction of the support rod 17 can be parallel to or intersect with the movement direction of the movable end of the first telescopic member 16. The above-mentioned gas path pipe can be wound on the support rod 17, thereby ensuring the stability of the connection between the gas path pipe and the scissor member 11.

[0057] As an implementation manner, the hook blade assembly 20 comprises a fixing base 24, a second support frame 25, a guide rod 22 and a hook blade 23. The fixed end of the second telescopic member 21 is connected to the fixing base 24, and the guide rod 22 passes through the fixing base 24. The length direction of the guide rod 22 is parallel to the telescopic direction of the movable end of the second telescopic member 21, and the guide rod 22 guides the movable end of the second telescopic member 21 to move along the length direction. The fixing base 24 is movably connected to the second support frame 25, so that the hook blade 23 swings in the up-down or left-right direction and hovers at any position.

[0058] As shown in Figure 5 and Figure 6 , the fixed end of the second telescopic member 21 is connected to the fixing base 24, and the guide rod 22 passes through the fixing base 24. The guide rod 22 is arranged obliquely relative to the vertical direction, and the length direction of the guide rod 22 is parallel to the telescopic direction of the movable end of the second telescopic member 21. Through the guiding action of the guide rod 22, the movable end of the second telescopic member 21 only moves in the length direction of the guide rod 22.

[0059] The second support frame 25 is a bent plate, and a long hole is arranged on the second support frame 25. A fourth through hole matched with the long hole is arranged on the fixing base 24, and a third bolt passes through the long hole and the fourth through hole to realize the connection between the fixing base 24 and the second support frame 25. When the third bolt is loosened, the fixing base 24 can be adjusted to a preset position in the up-down direction, and then the third bolt is tightened. Thus, the position of the hook blade 23 in the up-down direction is changed, which is helpful for the accurate cooperation between the hook blade 23 and the shearing member 11 to complete the shearing action. Of course, it can be understood that the position of the hook blade 23 can also be adjusted in the left-right direction. Figure 5

[0060] In addition, as shown in Figure 6 and Figure 7 , the hook blade assembly 20 further comprises a first hinged seat 26 and a second hinged seat 27 which are hinged to each other. The movable end of the second telescopic member 21 is connected to the first hinged seat 26, and the guide rod 22 passes through the first hinged seat 26. The hook blade 23 is connected to the second hinged seat 27, and a convex column 28 passing through the first hinged seat 26 is arranged on the second hinged seat 27, and the convex column 28 is located between the movable end of the second telescopic member 21 and the guide rod 22.

[0061] When the movable end of the second telescopic member 21 is retracted, the second hinged seat 27 approaches the fixing base 24 until the convex column 28 abuts against the fixing base 24, so that the hook line part 231 of the hook blade 23 is raised upward. In this way, when the hook blade 23 switches from the hooking position to the hook blade storage position, the hook line part 231 of the hook blade 23 can be away from the cloth, which is helpful for avoiding damage to the cloth by the hook line part 231 of the hook blade 23 during the process of collecting the finished cloth.

[0062] It should be noted that, as shown in Figure 7 ​As shown, the convex column 28 is provided with a reset spring. On the one hand, the convex column 28 is in flexible contact with the fixed seat 24, and on the other hand, when the hook blade 23 is switched from the hook blade storage position to the hook wire position, the reset spring resets the hook wire part 231 of the hook blade 23, and maintains the state under the hook wire position.

[0063] The utility model example further provides a computer embroidery machine, the computer embroidery machine includes a roof beam and the shearing device described above. The scissors assembly 10 and the hook blade assembly 20 can be installed on the roof beam, and can also be installed on the head. The scissors assembly 10 and the hook blade assembly 20 are located below the roof beam, as Figure 8 As shown.

[0064] The computer embroidery machine has the advantages of the shearing device, and details are not repeated.

[0065] It should be understood that the above description refers to the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like to indicate the orientation or positional relationship, which is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0066] The above description is only the preferred embodiment of the application and the explanation of the technical principles applied. Those skilled in the art should understand that the utility model range involved in the application is not limited to the technical solutions formed by the specific combination of the technical features described above, and should also cover other technical solutions formed by the arbitrary combination of the technical features described above or their equivalent features without departing from the utility model concept. For example, the technical solutions formed by the mutual replacement of the above-mentioned features and the technical features disclosed in the application (but not limited to) having similar functions.

Claims

1. A shearing device, characterized by, The utility model relates to a cutting tool, comprising: scissors assembly (10) and hook sword assembly (20), the scissors assembly (10) and hook sword assembly (20) are independent of each other, the scissors assembly (10) includes scissors piece (11) and first telescopic piece (16), the first telescopic piece (16) is arranged in the inclination to vertical direction, and the movable end of first telescopic piece (16) reciprocates in its inclination direction, and the movable end of first telescopic piece (16) drives the movement of scissors piece (11) so that scissors piece (11) has shearing position and scissors storage position; The hook sword assembly (20) includes hook sword (23) and second telescopic piece (21), the second telescopic piece (21) is arranged in the inclination to vertical direction, and the movable end of second telescopic piece (21) reciprocates in its inclination direction, and the movable end of second telescopic piece (21) drives the movement of hook sword (23) so that hook sword (23) has hooking wire position and hook sword storage position.

2. The shearing device of claim 1, wherein The scissors piece (11) has first direction freedom, second direction freedom and third direction freedom, in the first direction freedom, the scissors piece (11) swings in the up-down direction and suspends in any position, in the second direction freedom, the scissors piece (11) swings in the left-right direction and suspends in any position, in the third direction freedom, the scissors piece (11) can rotate and suspend in any position, The hook sword (23) has fourth direction freedom, and the fourth direction freedom is same with the first direction freedom, or same with the second direction freedom.

3. The shearing device of claim 2, wherein, The scissors assembly (10) further includes first adjusting piece (12), second adjusting piece (13) and third adjusting piece (14), The first adjusting piece (12) has first end (121) and second end (122) opposite to first end (121), and the second end (122) swings in the up-down direction relative to the first end (121); The second adjusting piece (13) has third end (131) and fourth end (132) opposite to third end (131), and the third end (131) is connected to the second end (122), and the fourth end (132) swings in the left-right direction relative to the third end (131), The third adjusting piece (14) is connected to the fourth end (132), and the third adjusting piece (14) can rotate, and the scissors piece (11) is connected to the third adjusting piece (14).

4. The shearing device of claim 3, wherein First through hole is equipped on the first end (121), and two interval and coaxial second through holes are equipped on the second end (122), Third through hole is equipped on the third end (131), the third end (131) is inserted between the gap of two second through holes, and the second through hole and the third through hole are coaxially arranged. The fourth end (132) is a threaded shaft, the third adjusting member (14) is provided with a fourth threaded hole (141) penetrating the fourth end (132), and the threaded shaft is in threaded connection with the fourth threaded hole (141).

5. The shearing device of claim 4, wherein, The threaded shaft is formed with a stop protrusion (133) in the circumferential direction, the stop protrusion (133) is matched with the third adjusting member (14), and the threaded shaft is limited to be separated from the fourth threaded hole (141).

6. The shearing device according to any one of claims 1-5, wherein, The scissor member (11) further comprises a blade tip protection member (19), The scissor member (11) has two scissor blades (111) approaching or moving away from each other, and the two scissor blades (111) are arranged in an inclined manner so that the two scissor blades (111) are arranged in an up-down manner and the tips of the two scissor blades (111) are downward, The blade tip protection member (19) comprises a support portion (192) and a raised portion (193), and the tips of the downwardly arranged scissor blades (111) are close to the connecting position of the support portion (192) and the raised portion (193).

7. The shearing device of claim 1, wherein, The hook blade assembly (20) further comprises a fixing seat (24), a second support frame (25) and a guide rod (22), the fixed end of the second telescopic member (21) is connected to the fixing seat (24), the guide rod (22) penetrates the fixing seat (24), The length direction of the guide rod (22) is parallel to the telescopic direction of the movable end of the second telescopic member (21), the guide rod (22) guides the movable end of the second telescopic member (21) to move along the length direction, The fixing seat (24) is movably connected to the second support frame (25), so that the hook blade (23) swings in the up-down or left-right direction and hovers at any position.

8. The shearing device of claim 7, wherein, The hook blade assembly (20) further comprises a first hinged seat (26) and a second hinged seat (27) hinged to each other, the movable end of the second telescopic member (21) is connected to the first hinged seat (26), and the guide rod (22) penetrates the first hinged seat (26), The hook blade (23) is connected to the second hinged seat (27), the second hinged seat (27) is provided with a convex column (28) penetrating the first hinged seat (26), and the convex column (28) is located between the guide rod (22) and the movable end of the second telescopic member (21), When the movable end of the second telescopic member (21) is retracted, the second hinged seat (27) approaches the fixing seat (24), and the convex column (28) abuts against the fixing seat (24) until the hook line portion (231) of the hook blade (23) is raised upward.

9. The shearing device of claim 8, wherein, The convex column (28) is sleeved with a reset spring.

10. A computerized embroidery machine characterized in that, The shear device comprises the shear device according to any one of claims 1-9.

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