Movable embossing thread residue cutting mechanism

Abstract

The utility model discloses a movable embossing thread residue cutting mechanism, which belongs to the technical field of textile and comprises a bottom plate. The upper end of the bottom plate is connected with a follow-up embossing mechanism; a cutting mechanism is arranged on the right side of the follow-up embossing mechanism; a conveying mechanism is arranged on the front side of the bottom plate. The follow-up embossing mechanism comprises a first driving assembly, a second driving assembly and an embossing assembly, and the first driving assembly is connected to the rear side of the upper end of the bottom plate; the front end of the first driving assembly is connected with a second driving assembly; the lower side of the second driving assembly is connected with an embossing assembly. According to the mode, the first driving assembly, the second driving assembly and the embossing assembly are matched with one another, follow-up embossing of the thread ends of the adjacent superfine fiber towels is achieved, the cutting mechanism instantly cuts the first embossing position and the second embossing position of the thread ends, and automatic cutting of the thread ends between the adjacent superfine fiber towels is achieved; the production efficiency is improved, thread residue fibers at the cut-off end are prevented from loosening after thread residues are cut off, the conveying mechanism does not need to be shut down, and the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to weaving technical field, concretely relates to a mobile embossing thread cutting head mechanism. BACKGROUND

[0002] In the field of textile technology, with the increasing demand of consumers for the quality and appearance of textiles, the production link is facing higher challenges and changes. The textile industry covers a complex industrial chain from fiber raw materials to various finished fabrics, among which the processing of cloth is particularly important.

[0003] Chinese patent CN213389191U discloses a blue surgical towel production cross-cut machine cutting feeding mechanism, which comprises a box body, a plurality of support frames are arranged in the box body, a first feeding plate and a second feeding plate are arranged on the support frames and cooperate with each other, a pulling structure, a feeding structure, a cutting structure and a feeding structure are arranged in the feeding box and cooperate with each other, and a feeding port matched with the feeding structure is arranged on the feeding box. However, the mechanism still has the following problems:

[0004] The structure is cut and cut by the cutting structure, the thread fiber at the cutting end may be loose or even fall off, which needs manual hot pressing treatment in the later stage, consumes manpower and reduces production efficiency.

[0005] Therefore, the utility model discloses a mobile embossing thread cutting head mechanism to solve the above problems. UTILITY MODEL CONTENTS

[0006] In view of the above shortcomings of the prior art, the utility model provides a mobile embossing thread cutting head mechanism.

[0007] To achieve the above purpose, the utility model realizes the following technical scheme:

[0008] A mobile embossing thread cutting head mechanism, comprising a bottom plate;

[0009] The bottom plate is connected with a follow-up embossing mechanism for follow-up embossing of the superfine fiber towel thread end on the upper end; a cutting mechanism for cutting the embossed superfine fiber towel thread end is arranged on the right side of the follow-up embossing mechanism; a conveying mechanism for conveying the superfine fiber towel is arranged on the front side of the bottom plate;

[0010] The follow-up embossing mechanism comprises a first driving assembly, a second driving assembly and an embossing assembly, the first driving assembly for driving the second driving assembly to move left and right in the horizontal direction is connected to the rear side of the upper end of the bottom plate; the first driving assembly is connected with the second driving assembly at the front end; the second driving assembly is connected with the embossing assembly below and cooperates with the second driving assembly to emboss the superfine fiber towel thread end.

[0011] Further, the first driving assembly comprises a servo motor, a driving wheel, a mounting block, a driven wheel, a synchronous belt, a sliding rail one, a mounting plate, a position sensor one and a position sensor two, the servo motor is fixedly connected to the right side of the upper end of the bottom plate, the output end of the servo motor is fixedly connected with the driving wheel, the left side of the upper end of the bottom plate is fixedly connected with the mounting block, the upper end of the mounting block is rotatably connected with the driven wheel, the driving wheel is in transmission connection with the driven wheel through the synchronous belt, the upper end of the bottom plate is fixedly connected with the sliding rail one, the mounting plate is fixedly connected with the sliding block of the sliding rail one, and the mounting plate is fixedly connected with the synchronous belt, the upper end of the mounting plate is connected with the second driving assembly, the right side of the upper end of the bottom plate is fixedly connected with the position sensor one, and the left side of the upper end of the bottom plate is fixedly connected with the position sensor two.

[0012] Further, the second driving assembly comprises a mounting frame one, a driving motor two, a driving block, a transmission rod and a sliding rail two, the mounting frame one is fixedly connected to the upper end of the mounting plate, the rear end of the mounting frame one is fixedly connected with the driving motor two, one end of the driving block is fixedly connected with the output end of the driving motor two, the other end of the driving block is rotatably connected with the upper end of the transmission rod, the front end of the mounting frame one is fixedly connected with the sliding rail two, the sliding block of the sliding rail two is fixedly connected with the L-shaped block, and the front end of the vertical plate of the L-shaped block is hingedly connected with the lower end of the transmission rod.

[0013] Further, the embossing assembly comprises a support one, a heating device one, an embossing base and an embossing block, the support one is fixedly connected to the lower end of the mounting plate, the lower end of the support one is fixedly connected with the heating device one for heating the embossing base, the upper end of the heating device one is fixedly connected with the embossing base, and the lower end of the horizontal plate of the L-shaped block is fixedly connected with the embossing block.

[0014] Further, the heating device one adopts an ultrasonic heating device.

[0015] Further, the cutting mechanism comprises a third driving assembly and a cutting assembly, the third driving assembly is connected to the right side of the upper end of the bottom plate, the cutting assembly for cutting off the hot-pressed end of the superfine fiber towel yarn is connected to the lower side of the third driving assembly.

[0016] Further, the third driving assembly comprises a mounting frame two, a driving cylinder, a connecting block and a fixed plate, the fixed plate is fixedly connected to the upper end of the bottom plate, the mounting frame two is fixedly connected to the upper end of the fixed plate, two driving cylinders are fixedly connected to the front end of the mounting frame two in a left-right symmetrical manner, and the output end of each of the left and right driving cylinders is fixedly connected with the connecting block.

[0017] Further, the cutting assembly comprises a support two, a heating device two, a cutting base and a cutting knife, the support two is fixedly connected to the lower end of the fixed plate, the lower end of the support two is fixedly connected with the heating device two for heating the cutting base, the heating device two adopts an ultrasonic heating device, the upper end of the heating device two is fixedly connected with the cutting base, and the lower end of each of the left and right connecting blocks is fixedly connected with the cutting knife.

[0018] Compared with the prior art, the utility model has the advantages that: through the mutual cooperation between the first driving assembly, the second driving assembly and the embossing assembly, the adjacent super fine fiber towel thread ends are embossed, the first embossing and the second embossing of the thread ends are cut instantaneously through the cutting mechanism, the automatic cutting of the thread ends between the adjacent super fine fiber towels is realized, manpower is saved, production efficiency is improved, and the problems such as loose and falling of the thread end fibers after cutting are avoided; and in the whole process, the conveying mechanism does not need to stop for hot pressing or cutting operation, operation efficiency is improved, and the equipment loss caused by repeated start and stop is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0020] Figure 1 It is a perspective view of the mobile embossing thread end cutting mechanism of the utility model Figure One ;

[0021] Figure 2 It is a front view of the mobile embossing thread end cutting mechanism of the utility model

[0022] Figure 3 It is a perspective view of the mobile embossing thread end cutting mechanism of the utility model Figure Two ;

[0023] Figure 4 It is a perspective view of the mobile embossing thread end cutting mechanism of the utility model Figure Three .

[0024] The numbers in the drawings respectively represent:

[0025] 11, bottom plate; 2, follow-up embossing mechanism; 21, first drive assembly; 211, servo motor; 212, driving wheel; 213, mounting block; 214, driven wheel; 215, synchronous belt; 216, slide rail one; 217, mounting plate; 218, position sensor one; 219, position sensor two; 22, second drive assembly; 221, mounting frame one; 222, drive motor two; 223, drive block; 224, transmission rod; 225, slide rail two; 226, L-shaped block; 23, embossing assembly; 231, bracket one; 232, heating device one; 233, embossing base; 234, embossing block; 3, cutting mechanism; 31, third drive assembly; 311, mounting frame two; 312, drive cylinder; 313, connecting block; 314, fixed plate; 32, cutting assembly; 321, bracket two; 322, heating device two; 323, cutting base; 324, cutting knife. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0027] In the following description, "left", "right", "front", "back", "up", and "down" are oriented in the perspective of the front view.

[0028] Embodiment one: in some embodiments, referring to the drawings of the specification Figures 1-4 A mobile embossing and cutting head mechanism, comprising a bottom plate 11;

[0029] The bottom plate 11 is connected with a follow-up embossing mechanism 2 at the upper end for follow-up embossing of the superfine fiber towel thread; the follow-up embossing mechanism 2 is provided with a cutting mechanism 3 at the right side for cutting the embossed superfine fiber towel thread; the front side of the bottom plate 11 is provided with a conveying mechanism for conveying the superfine fiber towel;

[0030] The follow-up embossing mechanism 2 comprises a first drive assembly 21, a second drive assembly 22, and an embossing assembly 23, the first drive assembly 21 for driving the second drive assembly 22 to move left and right in the horizontal direction is connected to the rear side of the upper end of the bottom plate 11; the first drive assembly 21 is connected with the second drive assembly 22 at the front end; the second drive assembly 22 is connected with the embossing assembly 23 at the lower side, which cooperates with the second drive assembly 22 to emboss the superfine fiber towel thread.

[0031] The utility model discloses a first drive assembly 21 drive second drive assembly 22 drive embossing assembly 23 with the right movement of super fine fiber towel, and second drive assembly 22 cooperation embossing assembly 23 to the first embossing of the thread between adjacent super fine fiber towel carries out hot pressing, after first embossing hot pressing is completed, first drive assembly 21 stop driving, when the second embossing of the thread between adjacent super fine fiber towel moves to the downside of second drive assembly 22, first drive assembly 21 drive second drive assembly 22 drive embossing assembly 23 continue with the right movement of super fine fiber towel, and second drive assembly 22 cooperation embossing assembly 23 to the second embossing carries out hot pressing, when second embossing hot pressing is completed, first drive assembly 21 drive second drive assembly 22 drive embossing assembly 23 to the left movement, when second drive assembly 22 moves to the first embossing of next thread, first drive assembly 21 drive second drive assembly 22 drive embossing assembly 23 with the right movement of super fine fiber towel, repeat above -mentioned working procedure, realize to all adjacent super fine fiber towel thread place follow -up embossing, when second embossing completes hot pressing, conveying mechanism continues to drive super fine fiber towel to the right movement, when adjacent super fine fiber towel thread moves to cutting mechanism 3 place, through cutting mechanism 3 to the first embossing and second embossing of super fine fiber towel thread instantaneous cutting, realize the cutting of the thread between adjacent super fine fiber towel.

[0032] The utility model discloses a first drive assembly 21 drive second drive assembly 22 drive embossing assembly 23 with the right movement of super fine fiber towel, and second drive assembly 22 cooperation embossing assembly 23 to the first embossing of the thread between adjacent super fine fiber towel carries out hot pressing, after first embossing hot pressing is completed, first drive assembly 21 stop driving, when the second embossing of the thread between adjacent super fine fiber towel moves to the downside of second drive assembly 22, first drive assembly 21 drive second drive assembly 22 drive embossing assembly 23 continue with the right movement of super fine fiber towel, and second drive assembly 22 cooperation embossing assembly 23 to the second embossing carries out hot pressing, when second embossing hot pressing is completed, first drive assembly 21 drive second drive assembly 22 drive embossing assembly 23 to the left movement, when second drive assembly 22 moves to the first embossing of next thread, first drive assembly 21 drive second drive assembly 22 drive embossing assembly 23 with the right movement of super fine fiber towel, repeat above -mentioned working procedure, realize to all adjacent super fine fiber towel thread place follow -up embossing, when second embossing completes hot pressing, conveying mechanism continues to drive super fine fiber towel to the right movement, when adjacent super fine fiber towel thread moves to cutting mechanism 3 place, through cutting mechanism 3 to the first embossing and second embossing of super fine fiber towel thread instantaneous cutting, realize the cutting of the thread between adjacent super fine fiber towel.

[0033] The first driving assembly 21 comprises a servo motor 211, a driving wheel 212, a mounting block 213, a driven wheel 214, a synchronous belt 215, a slide rail one 216, a mounting plate 217, a position sensor one 218 and a position sensor two 219, the servo motor 211 is fixedly connected to the right side of the upper end of the bottom plate 11, the output end of the servo motor 211 is fixedly connected with the driving wheel 212, the left side of the upper end of the bottom plate 11 is fixedly connected with the mounting block 213, the upper end of the mounting block 213 is rotatably connected with the driven wheel 214, the driving wheel 212 is in transmission connection with the driven wheel 214 through the synchronous belt 215, the upper end of the bottom plate 11 is fixedly connected with the slide rail one 216, the mounting plate 217 is fixedly connected with the sliding block of the slide rail one 216 and the synchronous belt 215, the upper end of the mounting plate 217 is connected with the second driving assembly 22, the right side of the upper end of the bottom plate 11 is fixedly connected with the position sensor one 218, and the left side of the upper end of the bottom plate 11 is fixedly connected with the position sensor two 219.

[0034] In the utility model, the servo motor 211 drives the driving wheel 212 to drive the driven wheel 214 to rotate through the synchronous belt 215, the synchronous belt 215 drives the mounting plate 217 to move left and right in the horizontal direction under the limiting action of the slide rail one 216, the mounting plate 217 drives the second driving assembly 22 to move left and right in the horizontal direction, when the second driving assembly 22 cooperates with the embossing assembly 23 to complete the hot pressing of the second embossing position of the thread end, the mounting plate 217 moves to the position sensor one 218 and triggers the position sensor one 218, the servo motor 211 drives the driving wheel 212 to drive the mounting plate 217 to move horizontally left through the synchronous belt 215, the mounting plate 217 drives the second driving assembly 22 to move horizontally left, when the mounting plate 217 moves to the position sensor two 219 and triggers the position sensor two 219, the first embossing position of the next thread end moves to the lower side of the second driving assembly 22 at this time, the servo motor 211 drives the driving wheel 212 to drive the mounting plate 217 to move right with the microfiber towel through the synchronous belt 215, and the mounting plate 217 drives the second driving assembly 22 to move horizontally left.

[0035] In the utility model, the servo motor 211 drives the driving wheel 212 to drive the mounting plate 217 to move in the horizontal direction through the synchronous belt 215, the mounting plate 217 drives the second driving assembly 22 to move in the horizontal direction, the second driving assembly 22 and the microfiber towel are followed, the second driving assembly 22 cooperates with the embossing assembly 23 to follow the embossing of the thread end, the mounting plate 217 cooperates with the position sensor one 218 and the position sensor two 219, the accurate control of the servo motor 211 is realized, and it is ensured that the second driving assembly 22 can follow the microfiber towel in time and accurately.

[0036] The second driving assembly 22 comprises a mounting frame 221, a driving motor 222, a driving block 223, a transmission rod 224 and a slide rail 225, the mounting frame 221 is fixedly connected to the upper end of the mounting plate 217, the driving motor 222 is fixedly connected to the rear end of the mounting frame 221, the driving block 223 is fixedly connected to the output end of the driving motor 222, the transmission rod 224 is rotatably connected to the other end of the driving block 223, the slide rail 225 is fixedly connected to the front end of the mounting frame 221, and the vertical plate of the L-shaped block 226 is hingedly connected to the lower end of the transmission rod 224.

[0037] The embossing assembly 23 comprises a support 231, a heating device 232, an embossing base 233 and an embossing block 234, the support 231 is fixedly connected to the lower end of the mounting plate 217, the heating device 232 for heating the embossing base 233 is fixedly connected to the lower end of the support 231, the heating device 232 can be an ultrasonic heating device, the embossing base 233 is fixedly connected to the upper end of the heating device 232, and the embossing block 234 is fixedly connected to the lower end of the horizontal plate of the L-shaped block 226.

[0038] In the utility model, the driving motor 222 drives the driving block 223 to rotate, the driving block 223 drives the L-shaped block 226 to vertically move up and down under the limiting action of the slide rail 225 through the transmission rod 224, the L-shaped block 226 drives the embossing block 234 to move up and down, the heating device 232 heats the embossing base 233, and the heated embossing base 233 cooperates with the embossing block 234 to heat-press the first embossing position or the second embossing position of the superfine fiber towel thread end, so that the problems, such as loose and falling of the thread fiber of the cut end after cutting off the thread end, are avoided.

[0039] The cutting mechanism 3 comprises a third driving assembly 31 and a cutting assembly 32, the third driving assembly 31 is connected to the upper end of the right side of the bottom plate 11, and the cutting assembly 32 for cutting the heat-pressed position of the superfine fiber towel thread end is connected to the lower side of the third driving assembly 31.

[0040] The third driving assembly 31 comprises a mounting frame 311, driving cylinders 312, connecting blocks 313 and a fixed plate 314, the fixed plate 314 is fixedly connected to the upper end of the bottom plate 11, the mounting frame 311 is fixedly connected to the upper end of the fixed plate 314, the driving cylinders 312 are fixedly connected to the front end of the mounting frame 311 and symmetrically arranged on the left and right sides, and the connecting blocks 313 are fixedly connected to the output ends of the driving cylinders 312.

[0041] The cutting assembly 32 comprises a bracket two 321, a heating device two 322, a cutting base 323 and a cutting knife 324, the bracket two 321 is fixedly connected to the lower end of the fixed plate 314, the bracket two 321 is fixedly connected with the heating device two 322 for heating the cutting base 323, the heating device two 322 can adopt ultrasonic heating device, the heating device two 322 is fixedly connected with the cutting base 323 at the upper end, and the cutting knife 324 is fixedly connected to the lower end of the connecting block 313 on the left and right sides.

[0042] In the utility model, when the position sensor one 218 is triggered, the driving cylinder 312 output end on the left and right sides drives the connecting block 313 to drive the cutting knife 324 to move vertically downwards, the heating device two 322 heats the cutting base 323, the output mechanism drives the superfine fibre towel to move to the right, when the first hot pressing of the superfine fibre towel thread head moves to the lower side of the right cutting knife 324, the second hot pressing moves to the lower side of the left cutting knife 324, at this time, the right cutting knife 324 cooperates with the cutting base 323 after heating to cut the first hot pressing, and the right cutting knife 324 cooperates with the cutting base 323 after heating to cut the first hot pressing, after cutting the thread head, the driving cylinder 312 output end on the left and right sides immediately drives the connecting block 313 to drive the cutting knife 324 to move vertically upwards, the first embossing and the second embossing of the superfine fibre towel thread head are cut instantaneously, and the thread head is cut off.

[0043] The above embodiment is only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model is described in detail with reference to the foregoing embodiment, those skilled in the art should understand that the technical scheme recorded in the foregoing embodiment can be modified, or part of the technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the utility model.

Claims

1. A mobile embossing thread cutting head mechanism comprising a base plate (11), characterized in that, The follow-up embossing mechanism (2) and the cutting mechanism (3) are further included; The follow-up embossing mechanism (2) is arranged on the upper end of the bottom plate (11) and used for follow-up embossing of the superfine fiber towel thread end; the cutting mechanism (3) is arranged on the right side of the follow-up embossing mechanism (2) and used for cutting the embossed superfine fiber towel thread end; and the conveying mechanism is arranged on the front side of the bottom plate (11) and used for conveying the superfine fiber towel. The follow-up embossing mechanism (2) comprises a first driving assembly (21), a second driving assembly (22) and an embossing assembly (23), the first driving assembly (21) is connected to the rear side of the upper end of the bottom plate (11) and used for driving the second driving assembly (22) to move left and right in the horizontal direction; the second driving assembly (22) is connected to the front end of the first driving assembly (21); and the embossing assembly (23) is connected to the lower side of the second driving assembly (22) and used for embossing the superfine fiber towel thread end in cooperation with the second driving assembly (22).

2. The mobile die cutting threader mechanism of claim 1, wherein, The first driving assembly (21) comprises a servo motor (211), a driving wheel (212), a mounting block (213), a driven wheel (214), a synchronous belt (215), a sliding rail one (216), a mounting plate (217), a position sensor one (218) and a position sensor two (219), the servo motor (211) is fixedly connected to the right side of the upper end of the bottom plate (11); the servo motor (211) is fixedly connected with the driving wheel (212) at the output end; the mounting block (213) is fixedly connected to the left side of the upper end of the bottom plate (11); the driven wheel (214) is rotatably connected to the upper end of the mounting block (213); the driving wheel (212) is in transmission connection with the driven wheel (214) through the synchronous belt (215); the sliding rail one (216) is fixedly connected to the upper end of the bottom plate (11); the mounting plate (217) is fixedly connected with the sliding block of the sliding rail one (216), and the mounting plate (217) is fixedly connected with the synchronous belt (215); the upper end of the mounting plate (217) is connected with the second driving assembly (22); the position sensor one (218) is fixedly connected to the right side of the upper end of the bottom plate (11); and the position sensor two (219) is fixedly connected to the left side of the upper end of the bottom plate (11).

3. The mobile die cutting threader mechanism of claim 2, wherein, The second driving assembly (22) comprises a mounting frame one (221), a driving motor two (222), a driving block (223), a transmission rod (224) and a sliding rail two (225), the mounting frame one (221) is fixedly connected to the upper end of the mounting plate (217); the driving motor two (222) is fixedly connected to the rear end of the mounting frame one (221); one end of the driving block (223) is fixedly connected with the output end of the driving motor two (222), and the other end of the driving block (223) is rotatably connected with the upper end of the transmission rod (224); the sliding rail two (225) is fixedly connected to the front end of the mounting frame one (221), the L-shaped block (226) is fixedly connected with the sliding block of the sliding rail two (225); and the vertical plate of the L-shaped block (226) is hingedly connected with the lower end of the transmission rod (224).

4. The mobile die cutting threader mechanism of claim 3, wherein, The embossing assembly (23) comprises a support one (231), a heating device one (232), an embossing base (233) and an embossing block (234), the support one (231) is fixedly connected to the lower end of the mounting plate (217); the lower end of the support one (231) is fixedly connected with the heating device one (232) for heating the embossing base (233); the upper end of the heating device one (232) is fixedly connected with the embossing base (233); the lower end of the horizontal plate of the L-shaped block (226) is fixedly connected with the embossing block (234).

5. The mobile die cutting threader mechanism of claim 4, wherein, The heating device one (232) adopts an ultrasonic heating device.

6. The mobile die cutting thread head mechanism of claim 1, wherein, The cutting mechanism (3) comprises a third driving assembly (31) and a cutting assembly (32), the third driving assembly (31) is connected to the upper end of the right side of the bottom plate (11), and the cutting assembly (32) is connected to the lower side of the third driving assembly (31) for cutting the hot-pressing part of the superfine fiber towel thread head.

7. The mobile die cutting threader mechanism of claim 6, wherein, The third driving assembly (31) comprises a mounting frame two (311), a driving cylinder (312), a connecting block (313) and a fixed plate (314), the fixed plate (314) is fixedly connected to the upper end of the bottom plate (11), and the mounting frame two (311) is fixedly connected to the upper end of the fixed plate (314); two driving cylinders (312) are fixedly connected to the front end of the mounting frame two (311) in a left-right symmetrical manner; the output ends of the left and right driving cylinders (312) are fixedly connected with the connecting blocks (313).

8. The mobile die cutting threader mechanism of claim 7, wherein, The cutting assembly (32) comprises a support two (321), a heating device two (322), a cutting base (323) and a cutting knife (324), the support two (321) is fixedly connected to the lower end of the fixed plate (314); the lower end of the support two (321) is fixedly connected with the heating device two (322) for heating the cutting base (323); the heating device two (322) adopts an ultrasonic heating device; the upper end of the heating device two (322) is fixedly connected with the cutting base (323); the lower ends of the left and right connecting blocks (313) are fixedly connected with the cutting knives (324).

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