CN115556187A

CN115556187A - Automatic position-following label pressing and cutting machine

Info

Publication number: CN115556187A
Application number: CN202211555216.5A
Authority: CN
Inventors: 王秀坤
Original assignee: Fujian Hongyue Technology Co ltd
Current assignee: Fujian Hongyue Technology Co ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-01-03

Abstract

The invention relates to the technical field of label pressing and cutting equipment, in particular to an automatic positioning label pressing and cutting machine which comprises a rack, wherein a CCD visual detection mechanism and a control system are arranged on the rack, a feeding mechanism and a pressing and cutting mechanism are arranged on the rack, the CCD visual detection mechanism is used for detecting printing sample information of a label sheet passing through a detection area of the CCD visual detection mechanism, the pressing and cutting mechanism is provided with a punching device capable of longitudinally and transversely moving and horizontally rotating, a station seat for hot pressing and/or cutting is arranged on the punching device, and the pressing and cutting mechanism, the control system and the CCD visual detection mechanism work in a coordinated manner to form an automatic positioning mechanism, so that the punching device can adjust the position according to the detection result of the CCD visual detection mechanism, and automatic accurate positioning of a punching action is completed. The invention is beneficial to solving the problems of low precision, time and labor waste caused by manual positioning required by cutting and hot pressing of the conventional label.

Description

Automatic position-following label pressing and cutting machine

Technical Field

The invention relates to the technical field of label pressing and cutting equipment, in particular to an automatic positioning label pressing and cutting machine.

Background

In the industries of shoes, clothes and bags, labels are attached or sewn on products and used for showing information such as brands, LOGO, patterns and the like. Wherein, on jeans, often can make up a leather mark in the area of back lumbar region, at present this leather mark's processing production, utilize rendition equipment to print the plane pattern on the leather material sheet earlier, then cut into the fritter square stock at the manual work, every square stock middle part printing has the plane pattern, the plane pattern outside remains certain clout, the manual work is with square stock counter point location, place on hot pressing equipment and utilize the drift to heat up behind the pressurize, punching press out concave pattern, then transfer to cutting equipment counter point location on the manual work, obtain the finished product mark after the outline is cut. The automatic degree of the mode is general, the labor intensity is high, manual operation is needed for positioning the workpiece during cutting and hot pressing, due to the fact that printing of the plane pattern is performed in the early stage, accurate positioning is needed during cutting and hot pressing, operators with rich experience and fine operation can perform the positioning operation, the skill requirement on operators is high, otherwise dislocation is easy to occur, defective products are generated, and the consistency of product quality cannot be guaranteed. Therefore, how to improve the precision positioning and the automation degree of the equipment in the pressing and cutting process of the leather mark is one of the hot problems to be treated urgently in the industry.

Disclosure of Invention

The invention aims to provide an automatic position-following label pressing and cutting machine, which is beneficial to solving the problems of low accuracy, time waste and labor waste caused by manual positioning in cutting and hot pressing of the conventional label.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an automatic follow position label press cutting machine, includes the frame, is equipped with CCD visual detection mechanism and control system in the frame, its characterized in that: be equipped with the feeding mechanism who is used for carrying the label sheet in the frame, the feeding mechanism end is equipped with the push-cut mechanism, and definition feeding mechanism's pay-off route direction is the fore-and-aft direction, CCD visual detection mechanism is located push-cut mechanism front side, and feeding mechanism's pay-off route passes through CCD visual detection mechanism's detection area, CCD visual detection mechanism is used for detecting the printing appearance information of its detection area's of way label sheet, still be equipped with location adjustment mechanism on feeding mechanism's the pay-off route, location adjustment mechanism is used for leading and rate of tension control to the label sheet, push-cut mechanism is equipped with can vertically, lateral shifting and horizontal rotation's stamping device, and the last station seat that is used for hot pressing and/or cuts that is equipped with of stamping device, push-cut mechanism, control system and CCD visual detection mechanism collaborative work constitute automatic position mechanism that follows for stamping device can carry out position adjustment according to CCD visual detection mechanism's testing result, accomplishes the automatic accurate positioning of punching press action.

On above-mentioned technical scheme's basis, in order to guarantee that the label sheet can keep certain rate of tension, carry out steady removal on conveying mechanism, reduce to appear piling up phenomenons such as fold, skew, location adjustment mechanism is including controlling the compression roller that sets up towards the level, the compression roller is located pay-off route top, and the compression roller constitutes the centre gripping limit structure of label sheet with conveying mechanism's transport structure jointly.

On the basis of the technical scheme, for the convenience of adjusting and controlling the clamping force of the compression roller, the compression roller is connected with a first driving device, and the first driving device can drive the compression roller to lift so as to complete the adjustment of the clamping gap of the label sheet.

On the basis of the technical scheme, in order to ensure that the label sheet can keep fixed feeding direction to move, the positioning adjusting mechanism further comprises a baffle arranged on one side of the feeding mechanism, the baffle is connected with the rack, and a displacement adjusting structure is arranged on the baffle in the left-right direction.

On the basis of the technical scheme, in order to flexibly and accurately adjust the stamping position and the stamping angle according to the detection result of the CCD visual detection mechanism and realize the effect of automatic and accurate position-following stamping, the press-cutting mechanism comprises a support frame connected with the frame, a second driving device is arranged on the support frame, the second driving device is in transmission connection with a first movable plate and can drive the first movable plate to move transversely left and right, a third driving device is arranged on the first movable plate, the bottom of the third driving device is connected with a second movable plate, the third driving device can drive the second movable plate to lift, a fourth driving device is arranged on the second movable plate, the bottom of the fourth driving device is connected with the stamping device, and the fourth driving device can drive the stamping device to rotate horizontally.

On the basis of the technical scheme, in order to conveniently and flexibly replace and adjust the stamping structure of the stamping device, the stamping device comprises a mounting seat and a station seat which are distributed vertically and detachably connected, the fourth driving device is arranged on the mounting seat, the station seat is provided with a cutting die and/or a section die, and after the stamping device moves downwards, the bottom of the station seat is abutted to a target area of the label sheet to be stamped in an abutting mode.

On the basis of the technical scheme, in order to realize hot pressing operation, a heating module is arranged on the station seat.

On the basis of the technical scheme, in order to reduce the instantaneous shear stress of rigidity when punching press and cause the label to tear, drag phenomenons such as deformation, station seat top is equipped with the screw hole, be equipped with on the mount pad with the through-hole of screw hole one-to-one, this through-hole internalization is inserted and is equipped with the screw rod, the body of rod lower extreme of screw rod is equipped with and is used for being connected fixed external screw thread structure with the screw hole, the body of rod upper end of screw rod is the smooth surface, and with through-hole clearance fit, the mount pad bottom evenly is equipped with vertical second guide bar, station seat top surface be equipped with the guiding hole with second guide bar one-to-one, the guiding hole is used for the second guide bar to insert and establishes, is equipped with the spring between second guide bar bottom and the guiding hole bottom.

On the basis of the technical scheme, in order to complete the profiling and cutting actions in a single stamping action and improve the processing efficiency, the periphery of the mounting seat is provided with an extension part, the bottom end of the extension part is provided with a cutter, and the bottom end of the cutter is lower than the bottom end of the station seat.

Compared with the prior art, the invention at least comprises the following advantages:

1. according to the invention, the automatic position following mechanism is formed by arranging the CCD visual detection mechanism, the control system and the press-cutting mechanism, the press-cutting mechanism is provided with the stamping device capable of longitudinally and transversely moving and horizontally rotating, so that the stamping device can accurately adjust the stamping position and the stamping angle according to the detection result of the CCD visual detection mechanism, and the automatic position following effect is achieved.

2. According to the invention, the positioning and adjusting mechanism is arranged on the front side of the CCD visual detection mechanism and is used for providing orientation and tension guarantee for conveying the label sheets, so that the feeding is stable and reliable, the operation efficiency is improved by cooperating with the press-cutting mechanism, and the press-cutting action is controlled in a proper operation area.

Drawings

FIG. 1 is a schematic perspective view of an automatic indexing label cutting press in one embodiment;

FIG. 2 is a schematic structural view of the feeding mechanism in FIG. 1;

FIG. 3 is a schematic view of the positioning adjustment mechanism of FIG. 1;

FIG. 4 is a schematic structural view of the press cutting mechanism of FIG. 1;

FIG. 5 is a schematic view of the transmission structure of the fixed plate and the movable plate in FIG. 4;

FIG. 6 is a schematic view of a mounting structure of a station disk in another embodiment;

fig. 7 is a schematic structural diagram of a station disk in another embodiment.

The figure is marked with: 1. a frame; 2. a feeding mechanism; 21. a conveyor belt; 22. a conveying motor; 23. a guide plate; 3. a positioning adjustment mechanism; 31. a baffle plate; 32. an extension plate; 33. a first guide bar; 34. adjusting the screw rod; 35. a compression roller; 36. a first driving device; 4. a CCD visual detection mechanism; 41. a human-computer interaction device; 5. a press cutting mechanism; 51. a support frame; 52. a base; 53. a second driving device; 54. a first movable plate; 55. a third driving device; 56. a second movable plate; 561. a guide bar; 57. a fourth drive device; 58. a mounting seat; 581. a bolt; 582. a second guide bar; 583. an extension portion; 584. a cutter; 59. a station seat; 591. a threaded hole; 592. a guide hole; 593. a spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description is made with reference to the accompanying drawings and detailed description. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the one element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Example 1:

as shown in fig. 1, the present embodiment discloses an automatic position-following label cutting press, which is used for cutting leather labels. The leather marking in this embodiment is to print patterns on a sheet uniformly (each pattern combination including characters, figures, and the like is printed on the sheet at regular intervals) to obtain a label sheet, and the label sheet is input to the automatic position-following label press-cutting machine in this embodiment to be cut one by one to obtain a finished leather marking product, which is used for being sewn in the rear waist region of jeans to perform a marking function.

The automatic position following labeling machine comprises a rack 1, wherein a control system, a feeding mechanism 2, a positioning adjusting mechanism 3, a CCD visual detection mechanism 4 and a press cutting mechanism 5 are arranged on the rack 1.

The frame 1 is formed by assembling metal sections, a panel or an opening and closing door plate is packaged on the side wall, and the frame 1 mainly plays a role in bearing and supporting. The bottom of the frame 1 is provided with support legs and walking wheels for supporting the frame 1 to be stable and facilitating the transportation and transfer of equipment.

The top of frame 1 is equipped with horizontally feeding mechanism 2, combines fig. 2, and feeding mechanism 2 includes belt structure's conveyer belt 21, and conveyer belt 21 is connected with frame 1 through a plurality of roll bodys, and conveyer belt 21 still is connected with conveying motor 22, and conveying motor 22 is step motor, and it sets firmly on frame 1 for it is rotatory to drive conveyer belt 21, thereby can carry out the transport of label sheet. The end of the conveyor belt 21 is provided with a guide plate 23, the guide plate 23 is obliquely arranged, and the inner end of the guide plate 23 is close to the conveyor belt 21 and used for guiding the label sheet at the end of the conveyor belt 21, so that the label sheet is separated from the conveyor belt 21 at the position to carry out the discharging action, and the conveyor belt 21 can be recycled in an empty state.

The feeding path of the feeding mechanism 2 is defined as the front-rear direction, and the horizontal direction perpendicular to the feeding path is the left-right direction.

With reference to fig. 1 and 3, frame 1 is located 2 one sides of feeding mechanism and is equipped with positioning adjustment mechanism 3, baffle 31 that orientation setting around positioning adjustment mechanism 3 level, baffle 31 after the assembly can be located conveyer belt 21 top one side, baffle 31 inside wall is used for the side of butt label sheet, carry out the butt location to label sheet, make label sheet remain stable in the left and right sides direction, baffle 31 top is connected with the extension board 32 of orientation about the level, the bar hole of orientation about being equipped with on the extension board 32, bar downthehole interpolation is equipped with first guide bar 33, first guide bar 33 bottom and frame 1 threaded connection, sideslip limit structure about first guide bar 33 and bar hole constitution, make baffle 31 can stably carry out sideslip regulation about, first guide bar 33 screws the back downwards, can lock extension board 32, make adjustment position backplate 31 can keep fixed. In order to facilitate accurate adjustment of the left and right positions of the baffle 31, the outer side of the baffle 31 is connected with an adjusting screw 34 which is horizontally oriented left and right, the inner end of the adjusting screw 34 is clamped on the baffle 31, the adjusting screw 34 is in threaded connection with the frame 1, and the baffle 31 can be pushed to move left and right by rotating the adjusting screw 34.

Positioning adjustment mechanism 3 is still including extending to the compression roller 35 of conveyer belt 21 top, and the orientation setting is controlled to the compression roller 35 level, forms the centre gripping clearance between compression roller 35 and the conveyer belt 21 for centre gripping restraint label sheet provides the rate of tension control for label sheet, makes label sheet can not take place to pile up the fold because of loose when carrying, and the rate of tension that the stability is fit removes.

Further, compression roller 35 bottom is connected with first drive arrangement 36, and first drive arrangement 36 adopts the integrated configuration of motor lead screw for drive compression roller 35 goes up and down, adjusts the size in centre gripping clearance, and then the label sheet and the rate of tension real time control of the different specification thickness of accurate adaptation.

Frame 1 is located the positioning adjustment mechanism 3 rear side and is equipped with CCD visual detection mechanism 4, and conveyer belt 21 passes the detection area of this CCD visual detection mechanism 4, and this detection area covers the whole horizontal face territory of conveyer belt 21, and all patterns of guarantee conveyer belt 21 upper label sheet can both be detected and discerned. The CCD vision inspection mechanism 4 is connected to a control system, which includes a human-computer interaction device 41, and the human-computer interaction device 41 specifically includes a display screen, an input keyboard, a switch button, and the like. The CCD vision detecting mechanism 4 and the control system are prior art, the detailed structure and working principle are not described herein again, the CCD vision detecting mechanism 4 can identify and detect the information such as the position and angle of the pattern on the label sheet, the processor of the control system processes the detection result, and sends an instruction to the press-cutting mechanism 5 for precise positioning punching.

The frame 1 is located the CCD visual detection mechanism 4 rear side and is equipped with the crush cutting mechanism 5, combine fig. 4 and fig. 5, the crush cutting mechanism 5 includes the support frame 51 of being connected with frame 1, the support frame 51 below is equipped with the base 52, after the assembly, the base 52 is located the conveyer belt 21 below, as the supporter of punching press action, the support frame 51 facial make-up is equipped with second drive arrangement 53, second drive arrangement 53 adopts the integrated configuration of motor and drive belt, the horizontal setting about the drive belt, the first fly leaf 54 of fixedly connected with on this drive belt, second drive arrangement 53 can drive first fly leaf 54 and carry out the sideslip about. The third driving device 55 is arranged on the first movable plate 54, the third driving device 55 adopts a combined structure of motor screws, the bottom of the third driving device 55 is connected with a second movable plate 56, the third driving device 55 can drive the second movable plate 56 to lift, in order to improve the stability of the lifting direction, a guide rod 561 is arranged on the second movable plate 56, the guide rod 561 is vertically arranged and can be slidably arranged through the first movable plate 54, the lifting of the second movable plate 56 is limited and guided, the second movable plate 56 is provided with a fourth driving device 57, the fourth driving device 57 adopts a combined structure of a motor and a synchronous belt, the bottom of the fourth driving device 57 is connected with the stamping device, and the fourth driving device 57 can drive the stamping device to horizontally rotate. Therefore, the plurality of driving systems are arranged in a stacked manner, so that the stamping device has the functions of up-down movement, left-right transverse movement and horizontal angle rotation, and further can cooperate with the CCD visual detection mechanism 4 and the control system to form an automatic positioning mechanism, and can accurately position and process the patterns on the label sheets.

Furthermore, stamping device includes mount pad 58 and station seat 59 that upper and lower distribution passes through bolt 581 connection between the two, fourth drive arrangement 57 is located on mount pad 58, station seat 59 is equipped with the cutting die, and after stamping device descended, the target area of station seat 59 bottom butt label sheet carried out the butt punching press, decides the label sheet.

In the specific implementation process, the feeding mechanism 2 feeds the label sheet printed with the planar pattern backwards in a stepping manner, when the label sheet passes through the positioning adjusting mechanism 3, the baffle 31 carries out left-right direction limiting orientation on the label sheet, the compression roller 35 carries out up-down direction limiting orientation to enable the label sheet to keep stable tension and move backwards, when the label sheet moves to the detection area of the CCD visual detection mechanism 4, information such as distribution position and angle of the pattern is identified and recorded, the detection result is processed by the control system to generate a corresponding command and sent to the press-cutting mechanism 5, all driving pieces of the press-cutting mechanism 5 cooperate to accurately adjust the left, right and angle of the stamping device to achieve the effect of automatic positioning, then the stamping device descends to blank a target area, and then the feeding mechanism 2 outputs a finished product backwards.

Example 2:

on the basis of embodiment 1, a forming die is arranged at the bottom of the station seat 59, and a heating module is connected to the forming die for hot-pressing operation, the heating module adopts a heating wire and a temperature control element, so that the station seat 59 can keep a proper temperature, during operation, the punching device automatically moves downwards after being positioned, and a target area below is subjected to hot pressing for a certain time, so that a concave printing structure is formed by hot-pressing and molding the target area.

Example 3:

on the basis of embodiment 1, with reference to fig. 6, the top of the station base 59 is provided with a threaded hole 591, the mounting base 58 is provided with through holes corresponding to the threaded holes 591 in a one-to-one manner, screws are movably inserted into the through holes, an external thread structure for connecting and fixing the threaded holes 591 is arranged at the lower end of the rod body of each screw, the upper end of the rod body of each screw is a smooth surface and is in clearance fit with the through holes, and can slide up and down relatively, the bottom of the mounting base 58 is uniformly provided with vertical second guide rods 582, the top surface of the station base 59 is provided with guide holes 592 corresponding to the second guide rods 582 in a one-to-one manner, the guide holes 592 are used for inserting the second guide rods 582, the guide rods and the guide holes 592 form a guide structure moving up and down, a spring 593 is arranged between the bottom of the second guide rods 582 and the bottom of the guide holes 592, and the spring 593 provides an upward pushing force for the guide rods. In a free state, a gap is reserved between the station seat 59 and the mounting seat 58, when the punching device moves downwards, the bottom of the station seat 59 is abutted to a label sheet firstly, the spring 593 is compressed until the bottom surface of the mounting seat 58 is abutted to the top surface of the station seat 59, therefore, the pressure applied to the label sheet during punching is divided into a front section and a rear section, the front section is flexibly pressed and held, the rear section is rigidly pressed and held, the front section and the rear section are elastically connected, the phenomena of tearing, pulling deformation and the like caused by rigid instantaneous cutting stress during punching are favorably reduced, and the yield of cutting or hot pressing is improved. It should be noted that, in this embodiment, a forming die or a cutting die may be disposed at the bottom of the station seat 59, and used for forming or cutting, respectively.

Example 4:

in addition to embodiment 3, with reference to fig. 7, an extension portion 583 is provided on the periphery of the mounting base 58, a cutter 584 is provided at the bottom end of the extension portion 583, the bottom end of the cutter 584 is lower than the bottom end of the station base 59, and a mold is provided at the bottom surface of the station base 59, so that when the punching device moves downward, the cutter 584 is firstly abutted against the label sheet, the station base 59 is then abutted against the inner pattern for hot pressing, the pressing and cutting operations are performed synchronously in a single punching operation, and after a certain time, the punching device moves upward to obtain a pressed and cut product.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an automatic follow position label press cutting machine, includes frame (1), is equipped with CCD visual detection mechanism (4) and control system on frame (1), its characterized in that: be equipped with on frame (1) and be used for carrying feeding mechanism (2) of label sheet, feeding mechanism (2) end is equipped with press cutting mechanism (5), and the pay-off route direction of definition feeding mechanism (2) is the fore-and-aft direction, CCD visual detection mechanism (4) are located press cutting mechanism (5) front side, and the pay-off route of feeding mechanism (2) passes through the detection area of CCD visual detection mechanism (4), CCD visual detection mechanism (4) are used for detecting the printing appearance information of its detection area's label sheet of way, still be equipped with location adjustment mechanism (3) on the pay-off route of feeding mechanism (2), location adjustment mechanism (3) are used for leading and rate of tension control to the label sheet, press cutting mechanism (5) are equipped with can vertically, lateral shifting and horizontal rotation's stamping device, are equipped with station seat (59) that are used for the die mould and/or cut on the stamping device, press cutting mechanism (5), control system and CCD visual detection mechanism (4) collaborative work constitute automatic position following mechanism for stamping device can carry out the position adjustment according to the detection result of CCD visual detection mechanism (4), and accomplish the punching press accurate location of action.

2. The automatic indexing label press-cutting machine according to claim 1, wherein: the positioning adjusting mechanism (3) comprises a pressing roller (35) which is horizontally arranged in a left-right direction, the pressing roller (35) is located above the feeding path, and the pressing roller (35) and the conveying structure of the feeding mechanism (2) jointly form a clamping and limiting structure of the label sheet.

3. The automatic indexing label press-cutting machine according to claim 2, wherein: the pressing roller (35) is connected with a first driving device (36), and the first driving device (36) can drive the pressing roller (35) to ascend and descend so as to complete adjustment of a label sheet clamping gap.

4. An automatic indexing label press according to claim 2 or 3, wherein: the positioning adjusting mechanism (3) further comprises a baffle (31) arranged on one side of the feeding mechanism (2), the baffle (31) is connected with the rack (1), and a displacement adjusting structure is arranged on the baffle (31) in the left-right direction.

5. The automatic indexing label press-cutting machine according to claim 1, wherein: the press-cutting mechanism (5) comprises a support frame (51) connected with the rack (1), a second driving device (53) is arranged on the support frame (51), the second driving device (53) is in transmission connection with a first movable plate (54), the second driving device (53) can drive the first movable plate (54) to move transversely left and right, a third driving device (55) is arranged on the first movable plate (54), the bottom of the third driving device (55) is connected with a second movable plate (56), the third driving device (55) can drive the second movable plate (56) to lift, a fourth driving device (57) is arranged on the second movable plate (56), the bottom of the fourth driving device (57) is connected with the stamping device, and the fourth driving device (57) can drive the stamping device to rotate horizontally.

6. The automatic indexing label press-cutting machine according to claim 5, wherein: the stamping device comprises an installation seat (58) and a station seat (59), wherein the installation seat (58) and the station seat (59) are vertically distributed and detachably connected, the fourth driving device (57) is arranged on the installation seat (58), the station seat (59) is provided with a cutting die and/or a section die, and after the stamping device descends, the bottom of the station seat (59) is abutted to a target area of the label sheet for abutting stamping.

7. An automatic indexing label press-cutting machine according to claim 6, characterized in that: and a heating module is arranged on the station seat (59).

8. The automatic indexing label press-cutting machine according to claim 6, wherein: station seat (59) top is equipped with screw hole (591), be equipped with the through-hole with screw hole (591) one-to-one on mount pad (58), this through-hole internalization is inserted and is equipped with the screw rod, the body of rod lower extreme of screw rod is equipped with and is used for being connected fixed external screw thread structure with screw hole (591), the body of rod upper end of screw rod is the smooth surface, and with through-hole clearance fit, mount pad (58) bottom evenly is equipped with vertical second guide bar (582), station seat (59) top surface is equipped with guiding hole (592) with second guide bar (582) one-to-one, guiding hole (592) are used for second guide bar (582) to insert and establish, be equipped with spring (593) between second guide bar (582) bottom and guiding hole (592) bottom.

9. An automatic indexing label press-cutting machine according to claim 8, wherein: an extension part (583) is arranged on the periphery of the mounting seat (58), a cutter (584) is arranged at the bottom end of the extension part (583), and the bottom end of the cutter (584) is lower than the bottom end of the station seat (59).