CN211866806U

CN211866806U - A wire cutting device for subway door shelves processing

Info

Publication number: CN211866806U
Application number: CN202020347700.9U
Authority: CN
Inventors: 朱立宇; 汪峰峰
Original assignee: Nanjing Feilin Aircraft Power Co ltd
Current assignee: Nanjing Feilin Aircraft Power Co ltd
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-11-06
Anticipated expiration: 2030-03-19

Abstract

The utility model discloses a wire cutting device for subway door shelves processing, its technical essential includes the work body, can dismantle on the workstation of work body and be connected with the baffle, be provided with the drive chamber that extends along work body length direction in the baffle, be provided with the groove of walking that runs through the baffle on the roof in drive chamber, it slides along work body length direction on the cell wall in groove to walk and is connected with the drive block, be provided with the push pedal on the drive block, the push pedal extends along the width direction of work body, the one end of walking the line device is provided with and receives the frame in work body workstation is kept away from the work body along length direction, be provided with the driving piece that the drive block slided in the drive chamber, it is provided with the flexible enclosure piece that is used for sealing away groove and drive block spare space on the lateral wall in groove to walk. The utility model discloses can clear up the waste material that the cutting produced conveniently for the wire-electrode cutting device can move safely high-efficiently.

Description

A wire cutting device for subway door shelves processing

Technical Field

The utility model relates to a subway structure processing field, more specifically say, it relates to a wire cutting device for subway door shelves processing.

Background

The subway door stop is a component for supporting the subway door, and a linear cutting device is usually adopted to process the subway door stop according to different specifications of the subway door.

As shown in fig. 1, the linear cutting device for processing a subway door stop includes a working body 1, the working body 1 mainly includes a frame 14, a routing device 11, a workbench 12, a transverse servo structure 15 and a longitudinal servo structure 16, a clamp 13 is installed on the workbench 12 for clamping a workpiece, the upper end and the lower end of the routing device 11 are respectively above and below the clamp 13, the transverse servo structure 15 and the longitudinal servo structure 16 can be mutually matched to drive the workbench 12 to move along an X-Y coordinate system, so that the cutting end of the routing device 11 and the workpiece on the clamp 13 realize relative movement, and the workpiece can be processed.

However, in the working process of the wire cutting device, waste materials generated by cutting can directly fall onto the workbench, and after a period of time, the waste materials are stacked, so that the work of the wire routing device is easily influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a wire cutting device for subway door shelves processing can clear up the waste material that the cutting produced conveniently for wire cutting device can move safely high-efficiently.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a wire-electrode cutting device for subway door shelves processing, includes the work body, can dismantle on the workstation of work body and be connected with the baffle, be provided with the drive chamber that extends along work body length direction in the baffle, be provided with the groove of walking that runs through the baffle on the roof in drive chamber, it slides along work body length direction on the cell wall in groove to walk and is connected with the drive block, be provided with the push pedal on the drive block, the push pedal extends along the width direction of work body, the one end of walking the line device is provided with and receives the frame in keeping away from the work body along length direction of work body workstation, be provided with the driving piece that the drive block slided in the drive chamber, it is used for sealing the flexible enclosure piece in groove and drive block spare space to walk to be provided with on the lateral.

By adopting the technical scheme, when the wire cutting device cuts a workpiece, the waste material falls on the baffle, a certain amount of baffle is accumulated on the baffle after a certain time, and the driving piece is started to enable the push plate to be attached to the baffle and move towards the collection frame, so that the waste material can be pushed into the collection frame to clean the baffle; and because the setting of flexible enclosure spare, under the prerequisite that does not influence the drive block removal, it realizes sealedly to walk the groove, prevents useless falling into and walks in groove and the drive chamber and influence the removal of push pedal, thereby the utility model discloses can clear up the waste material that the cutting produced conveniently for the wire-electrode cutting device can move safely high-efficiently.

The utility model discloses a further set up to, the driving piece includes drive screw, drive spiro and servo motor, drive screw rotates to set up between the relative chamber wall along work body length direction in the drive chamber, the interior rampart threaded connection of drive spiro is on the drive screw perisporium, the top and the drive block fixed connection of drive spiro, servo motor sets up at drive intracavity and drive end and drive screw fixed connection.

By adopting the technical scheme, the driving spiral ring can only move along the length direction of the driving screw under the limiting action of the running groove and the driving block, so that when the driving screw rotates, thread feeding can occur between the driving screw and the driving spiral ring, and the driving spiral ring drives the driving block to drive the push plate to move.

The utility model discloses a further set up to, flexible closure piece is including flexible spout, end plate, even board and expansion plate, flexible spout setting is on walking the relative cell wall of groove edge work body width direction, the fixed setting of end plate is at the length direction both ends of walking the groove, even the board is fixed to be set up on the lateral wall of the both sides of drive block edge work body length direction, the expansion plate has a plurality of and stretch out and draw back in proper order and slides at the end plate with even between the board, the width direction both ends end wall and the flexible spout of even board and expansion plate slide and be connected.

Through adopting above-mentioned technical scheme to end plate and even board application of force point, when the drive block removed, the expansion plate is flexible between end plate and even board, and then under the prerequisite that does not influence the drive block removal, seals walking the groove.

The utility model is further provided with a clamping groove arranged on one side wall of the push plate facing the frame, a clamping block is inserted in the clamping groove, the top wall of the clamping groove extends upwards to form a connecting groove, the clamping block runs through a matching groove along the vertical direction, and an inserting rod is arranged in the connecting groove in a sliding manner; in the process of inserting the clamping block and the clamping groove, the inserting rod is retracted into the connecting groove; after the clamping block is inserted into the clamping groove, the bottom end of the inserting rod is inserted into the matching groove; even the groove top is provided with the operation groove that runs through the push pedal and receive frame one side lateral wall, the operation groove slides along vertical direction and is provided with the operation piece with inserted bar fixed connection, threaded connection has the clamp ring on the operation piece, the one end that the draw-in groove was kept away from to the fixture block is provided with the pusher, pusher and baffle butt.

By adopting the technical scheme, the clamping block is inserted into the clamping groove, so that the pushing head can be preliminarily detachably connected on the pushing plate; and through removing the operation piece for the inserted bar is along vertical direction at even inslot cunning and move, and the inserted bar bottom is pegged graft with the cooperation groove, and the compressing tightly of clamp ring in the push pedal is mated again, can realize the pushing head and be connected with the firm dismantlement of push pedal, thereby the contact waste material of pushing head, accessible dismantlement is lifted off the pushing head and is cleared up the pushing head behind the one end time, improves the clean effect to the baffle.

The utility model is further arranged that the bottom end of the pushing head is an elastic end; when the bottom end of the push head is abutted to the baffle, the bottom end of the push head is compressed.

Through adopting above-mentioned technical scheme for the bottom of pushing head supports tight baffle, and the pushing head can carry out more thorough cleanness with the waste material on the baffle.

The utility model discloses a further set up to, be provided with flexible brush hair on the periphery wall of pushing head.

Through adopting above-mentioned technical scheme, outside the clearance of the tiny gap on the realization is to the baffle, reduce the wearing and tearing of pushing head and baffle to each other.

The utility model discloses a further setting is as, receive the frame including connecting the deckle board and receiving the deckle board, connecting the deckle board and rotate on the workstation end wall of work body and along vertical direction, receive the deckle board angulation setting and keep away from the one end of work body at connecting the deckle board, receive the deckle board and connect the deckle board upper surface contained angle and be less than 180; the lower surface of the connecting frame plate is hinged with a telescopic rod, the working body is positioned below the connecting frame plate and is hinged with a fixed rod, one end of the fixed rod, which is far away from the working body, is provided with a sliding groove, the telescopic rod is connected with the sliding groove in a sliding manner, and a supporting spring is arranged between one end of the telescopic rod, which extends into the sliding groove, and the bottom wall of the sliding groove; when the supporting spring is in a natural state, one end of the material receiving frame plate, which is far away from the connecting frame plate, extends upwards; when the supporting spring is in a compressed state, one end of the material receiving frame plate, which is far away from the connecting frame plate, extends downwards.

By adopting the technical scheme, when the push plate works normally, under the supporting action of the supporting spring, one end of the material receiving frame plate, which is far away from the connecting frame plate, extends upwards, so that the collection of waste materials is realized; when the waste materials in the collecting frame are accumulated by a certain amount, the collecting frame is pressed, so that the connecting frame plate overcomes the elasticity of the supporting spring and rotates downwards, one end, far away from the connecting frame plate, of the collecting frame plate extends downwards, the waste materials can slide out of the collecting frame under the action of self gravity, and the waste materials in the collecting frame can be cleaned conveniently.

The utility model is further provided with a residual material receiving groove which is arranged at one end of the upper surface of the connecting plate far away from the receiving frame and extends along the width direction of the working body; when the push plate is in an initial state, the bottom end of the side wall of the push plate, which is far away from the collecting frame, is aligned with the excess material collecting groove.

Through taking above-mentioned technical scheme, the push pedal can inevitably produce the hourglass to the waste material on the baffle, consequently when the normal position is got back to in the push pedal, the waste material of leaving over can fall into the clout groove under the reverse pushing action of push pedal, when improving clean effect, prevents that the waste material that the backstepping was released from scattering at will.

To sum up, the utility model discloses following beneficial effect has:

1. the utility model can push the waste on the baffle into the collecting frame by utilizing the push plate, and can not drop the waste into the driving cavity, thereby effectively cleaning the waste on the workbench in time;

2. the utility model discloses in receive the structure setting of frame, not only can be in the push pedal normal during operation for receive the frame and realize collecting the waste material, the waste material in receiving the frame is gathering when a certain amount moreover, and the frame is received in the pressure action, makes the connection deckle board overcome supporting spring's elasticity and rotate downwards, makes the one end downwardly extending who receives the deckle board and keep away from the connection deckle board, can make the waste material roll-off receive the frame under the effect of self gravity, is convenient for to the clearance of receiving the interior waste material of frame.

Drawings

Fig. 1 is a schematic structural diagram of the prior art.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic view of a baffle structure according to the present invention.

Fig. 4 is a cross-sectional view taken at a-a in fig. 3.

Fig. 5 is an enlarged view of a portion a in fig. 3.

Fig. 6 is a cross-sectional view at B-B in fig. 3.

Fig. 7 is a cross-sectional view at C-C in fig. 3.

Reference numerals: 1. a working body; 11. a wiring device; 12. a work table; 13. a clamp; 14. a frame; 15. a lateral servo structure; 16. a longitudinal servo structure; 2. a baffle plate; 21. a residual material collecting groove; 3. a drive chamber; 4. a groove is formed; 5. a drive block; 6. frame collection; 61. connecting the frame plates; 62. a material receiving frame plate; 63. a telescopic rod; 64. fixing the rod; 65. a support spring; 66. a sliding groove; 7. a drive member; 71. a drive screw; 72. a drive toroid; 73. a servo motor; 8. a telescoping closure member; 81. a telescopic chute; 82. an end plate; 83. connecting plates; 84. a retractable plate; 9. pushing the plate; 91. a card slot; 911. a clamping block; 92. connecting the grooves; 921. inserting a rod; 922. a mating groove; 93. an operation slot; 931. an operation block; 932. a compression ring; 94. pushing the head; 941. flexible bristles.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

the utility model discloses a linear cutting device for processing subway door stop, as shown in figures 2 and 3, comprising a working body 1, a baffle 2 is detachably connected on a workbench 12 of the working body 1, in the embodiment, the baffle 2 is connected with the mounting end of a clamp 13 on the workbench 12 through a bolt, so as to relatively fix the baffle 1 on the workbench 12, a driving cavity 3 (shown in figure 4) extending along the length direction of the working body 1 is arranged in the baffle 2, a running groove 4 (shown in figure 4) penetrating through the baffle 2 is arranged on the top wall of the driving cavity 3, a driving block 5 is connected on the groove wall of the running groove 4 in a sliding way along the length direction of the working body 1, a push plate 9 is fixedly arranged at the top end of the driving block 5, the push plate 9 extends along the width direction of the working body 1 and slides in a fitting way with the upper surface of the baffle 2, a folding frame 6 is arranged at one end of the workbench 12 of the working body 1 far away from the working body 11, meanwhile, in the embodiment, a concave excess material receiving groove 21 is formed in one end, far away from the receiving frame 6, of the upper surface of the baffle 2, and the excess material receiving groove 21 extends along the width direction of the working body 1; a driving piece 7 for driving the driving block 5 to slide is arranged in the driving cavity 3, and a telescopic closing piece 8 for closing a gap between the running groove 4 and the driving block 5 is also arranged on the side wall of the running groove 4. In the working process of the linear cutting device, waste materials can fall on the baffle plate 2, after a period of time, the driving piece 7 is started, the driving block 5 drives the push plate 9 to move towards the collection frame 6, and in the moving process of the push plate 9, the telescopic closing piece 8 closes the trough 4 in real time, so that the waste materials on the baffle plate 2 can be pushed into the collection frame 6 by the push plate 9, and then the driving piece 7 brings the push plate 9 back to the original position; in the process that the push plate 9 returns to the original position, the waste materials left on the baffle plate 2 can be brought into the excess material collecting groove 21 by the baffle plate 2, and at the moment, the bottom end of the side wall of the push plate 9 far away from the collecting frame 6 is aligned with the excess material collecting groove 21.

As shown in fig. 4, the driving member 7 includes a driving screw 71, a driving screw ring 72 and a servo motor 73, the driving screw 71 is rotatably disposed between opposite cavity walls of the driving cavity 3 along the length direction of the working body 1, an inner annular wall of the driving screw ring 72 is threadedly connected to a peripheral wall of the driving screw 71, a top end of the driving screw ring 72 is fixedly connected to the driving block 5, and the servo motor 73 is disposed at one end of the driving cavity 3 away from the receiving frame 6 and a driving end thereof is fixedly connected to the driving screw 71. The servo motor 73 is started to drive the driving screw rod 71 to rotate, so that the thread rotation between the driving screw rod 71 and the driving spiral ring 72 drives the driving block 5 to drive the push plate 9 to move.

As shown in fig. 4 and 5, the telescopic closing member 8 includes a telescopic chute 81, an end plate 82, a connecting plate 83 and a telescopic plate 84, the telescopic chute 81 is disposed on the opposite chute wall of the chute 4 along the width direction of the working body 1, the end plate 82 is fixedly disposed at both ends of the chute 4 in the length direction, the connecting plate 83 is fixedly disposed on both side walls of the driving block 5 along the length direction of the working body 1, the telescopic plate 84 has eight parts and sequentially slides between the end plate 82 and the connecting plate 83 in a telescopic manner, and the end walls of both ends of the connecting plate 83 and the telescopic plate 84 in the width direction are connected with the telescopic chute 81 in a sliding manner. In the process of moving the driving block 5, the end plate 82 and the connecting plate 83 are taken as stress points, the expansion plate 84 expands and contracts in sequence, so that the driving block 5 moves normally, and the end plate 82, the connecting plate 83 and the expansion plate 84 can also seal the runner 4.

As shown in fig. 6, the receiving frame 6 in this embodiment includes a connecting frame plate 61 and a receiving frame plate 62, the connecting frame plate 61 is rotatably connected to the end wall of the working table 12 of the working body 1 and rotates in the vertical direction, the receiving frame plate 62 is fixedly disposed at one end of the connecting frame plate 61 far from the working body 1, and an included angle between the receiving frame plate 62 and the upper surface of the connecting frame plate 61 is 120 °; the lower surface of connecting deckle board 61 still articulates along length direction center department has telescopic link 63, and work body 1 is located the below of connecting deckle board 61 and then articulates there is dead lever 64, and the one end that work body 1 was kept away from to dead lever 64 is provided with the groove 66 that slides, and telescopic link 63 slides with the groove 66 and is connected, and telescopic link 63 stretches into between the one end of the groove 66 that slides and the diapire of the groove 66 that slides and fixedly is provided with supporting spring 65. When the collecting frame 6 is in a working state of collecting waste materials, the supporting spring 65 is in a natural state, so that under the supporting action of the elastic force of the supporting spring 65, one end of the collecting frame plate 62, which is far away from the connecting frame plate 61, extends upwards to collect the waste materials; when the waste in the collecting frame 6 needs to be cleaned, the collecting frame 6 is pressed, the connecting frame plate 61 overcomes the elasticity of the supporting spring 65 and rotates downwards, one end, far away from the connecting frame plate 61, of the collecting frame plate 62 extends downwards, the waste can slide out of the collecting frame 6 under the action of self gravity, then the supporting spring 65 can be restored to a natural state from a compressed state after hands are loosened, and the collecting frame plate 62 is continuously supported; in this embodiment, the two ends of the receiving frame 6 in the width direction are penetrated, so that the waste in the receiving frame 6 can be cleaned more easily.

As shown in fig. 7, a clamping groove 91 is formed in a side wall, facing the closing frame 6, of the push plate 9, a clamping block 911 is inserted into the clamping groove 91, a connecting groove 92 extends upwards from a top wall of the clamping groove 91, the clamping block 911 penetrates through a matching groove 922 in the vertical direction, and an insertion rod 921 is slidably arranged in the connecting groove 92; simultaneously, even the groove 92 top is provided with runs through push pedal 9 towards the operation groove 93 of receiving frame 6 one side lateral wall, and operation groove 93 slides along vertical direction and is provided with the operation piece 931 with inserted bar 921 fixed connection, and threaded connection has clamp ring 932 on the operation piece 931, and in this embodiment, the one end that draw-in groove 91 was kept away from to fixture block 911 still is provided with the bottom and is the push head 94 of elastic end, is provided with flexible brush hair 941 on the periphery wall of push head 94. When the push plate 9 and the push head 94 work, the bottom end of the insertion rod 921 is inserted into the matching groove 922, and the pressing ring 932 is pressed on the push plate 9, so that the push head 94 is arranged on the push plate 9; when the pushing plate 9 moves, the bottom end of the pushing head 94 is compressed and tightly abutted to the baffle 2, so that the pushing head 94 mainly pushes waste materials on the baffle 2, the cleaning effect is better, and the flexible bristles 941 can also reduce abrasion of the baffle 2 and the pushing head 94 to each other. And after a period of time, the pressing ring 932 is rotated to be far away from the push plate 9, then the operation frame is operated to move the insertion rod 921 upwards, so that the insertion rod 921 is retracted into the connecting groove 92, and finally the fixture block 911 is pulled out from the clamping groove 91 to clean the push head 94.

The working process is as follows:

in the working process of the linear cutting device, waste materials can fall on the baffle 2, after a period of time, the driving servo motor 73 is started to drive the spiral ring 72 and the driving screw rod 71 to rotate in a threaded mode, so that the driving block 5 drives the push plate 9 to move towards the collecting frame 6, and in the moving process of the push plate 9, the telescopic plate 84 telescopically slides between the end plate 82 and the connecting plate 83 to seal the walking groove 4 in real time, so that the waste materials on the baffle 2 can be pushed into the collecting frame 6 by the push plate 9, and then the push plate 9 is brought back to the original position; in the process that the push plate 9 returns to the original position, the waste materials left on the baffle plate 2 can be brought into the excess material collecting groove 21 by the baffle plate 2, and at the moment, the bottom end of the side wall of the push plate 9 far away from the collecting frame 6 is aligned with the excess material collecting groove 21.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a wire cut electrical discharge machining device for subway door shelves processing, includes work body (1), its characterized in that: can dismantle on workstation (12) of work body (1) and be connected with baffle (2), be provided with in baffle (2) along drive chamber (3) that work body (1) length direction extends, be provided with on the roof of drive chamber (3) and run through groove (4) of baffle (2), it slides along work body (1) length direction on the cell wall of groove (4) and is connected with drive block (5) to walk, be provided with push pedal (9) on drive block (5), push pedal (9) extend along the width direction of work body (1), the one end of walking line device (11) in work body (1) is kept away from along length direction in workstation (12) of work body (1) is provided with and receives frame (6), be provided with driving piece (7) that drive block (5) slided in drive chamber (3), it is provided with on the lateral wall of groove (4) and is used for sealing flexible (8) in groove (4) and the drive block (5) spare space to walk .

2. The wire cutting device for processing the door stop of the subway door as claimed in claim 1, wherein: the driving piece (7) comprises a driving screw rod (71), a driving spiral ring (72) and a servo motor (73), the driving screw rod (71) is rotatably arranged between the opposite cavity walls of the driving cavity (3) along the length direction of the working body (1), the inner ring wall of the driving spiral ring (72) is in threaded connection with the peripheral wall of the driving screw rod (71), the top end of the driving spiral ring (72) is fixedly connected with the driving block (5), and the servo motor (73) is arranged in the driving cavity (3) and has a driving end fixedly connected with the driving screw rod (71).

3. The wire cutting device for processing the door stop of the subway door as claimed in claim 1, wherein: flexible closure (8) are including flexible spout (81), end plate (82), link board (83) and expansion plate (84), flexible spout (81) set up on walking groove (4) along work body (1) width direction's relative cell wall, end plate (82) are fixed to be set up at the length direction both ends of walking groove (4), link board (83) are fixed to be set up on drive block (5) along work body (1) length direction's both sides lateral wall, expansion plate (84) have a plurality of and stretch out and draw back in proper order and slide between end plate (82) and link board (83), the width direction both ends end wall and the flexible spout (81) of link board (83) and expansion plate (84) slide and be connected.

4. The wire cutting device for processing the door stop of the subway door as claimed in claim 1, wherein: a clamping groove (91) is formed in the side wall, facing the folding frame (6), of the push plate (9), a clamping block (911) is inserted into the clamping groove (91), a connecting groove (92) extends upwards from the top wall of the clamping groove (91), the clamping block (911) penetrates through a matching groove (922) in the vertical direction, and an inserting rod (921) slides in the connecting groove (92); in the process that the clamping block (911) is plugged with the clamping groove (91), the plugging rod (921) retracts into the connecting groove (92); when the clamping block (911) is spliced with the clamping groove (91), the bottom end of the inserted bar (921) is spliced with the matching groove (922); even groove (92) top is provided with operation groove (93) that runs through push pedal (9) orientation and receive frame (6) one side lateral wall, operation groove (93) slide along vertical direction and be provided with operation piece (931) with inserted bar (921) fixed connection, threaded connection has clamp ring (932) on operation piece (931), the one end that draw-in groove (91) was kept away from in fixture block (911) is provided with and pushes away head (94), push away head (94) and baffle (2) butt.

5. The wire cutting device for processing the door stop of the subway door as claimed in claim 4, wherein: the bottom end of the push head (94) is an elastic end; when the bottom end of the push head (94) is abutted against the baffle (2), the bottom end of the push head (94) is compressed.

6. The wire cutting device for processing the door stop of the subway door as claimed in claim 4, wherein: the outer peripheral wall of the pushing head (94) is provided with flexible bristles (941).

7. The wire cutting device for processing the door stop of the subway door as claimed in claim 1, wherein: the collecting frame (6) comprises a connecting frame plate (61) and a collecting frame plate (62), the connecting frame plate (61) is rotatably connected to the workbench (12) of the working body (1), the end wall of the connecting frame plate rotates in the vertical direction, the collecting frame plate (62) is arranged at one end, away from the working body (1), of the connecting frame plate (61) in an angled mode, and the included angle between the collecting frame plate (62) and the upper surface of the connecting frame plate (61) is smaller than 180 degrees; the lower surface of the connecting frame plate (61) is hinged with a telescopic rod (63), the working body (1) is hinged with a fixing rod (64) below the connecting frame plate (61), one end, far away from the working body (1), of the fixing rod (64) is provided with a sliding groove (66), the telescopic rod (63) is connected with the sliding groove (66) in a sliding mode, and a supporting spring (65) is arranged between one end, extending into the sliding groove (66), of the telescopic rod (63) and the bottom wall of the sliding groove (66); when the supporting spring (65) is in a natural state, one end of the material receiving frame plate (62) far away from the connecting frame plate (61) extends upwards; when the supporting spring (65) is in a compressed state, one end of the material receiving frame plate (62) far away from the connecting frame plate (61) extends downwards.

8. The wire cutting device for processing the door stop of the subway door as claimed in claim 1, wherein: one end of the upper surface of the baffle (2), which is far away from the collecting frame (6), is provided with a concave excess material collecting groove (21), and the excess material collecting groove (21) extends along the width direction of the working body (1); when the push plate (9) is in an initial state, the bottom end of the side wall of the push plate (9) far away from the collecting frame (6) is aligned with the excess material collecting groove (21).