CN210550049U

CN210550049U - Device for cutting and deburring metal can

Info

Publication number: CN210550049U
Application number: CN201920775066.6U
Authority: CN
Inventors: 陆永恒
Original assignee: Foshan Shunde Wancheng Metal Packaging Co ltd
Current assignee: Foshan Shunde Wancheng Metal Packaging Co ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-05-19
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a device of burr is got rid of to metallic tank cutting belongs to metallic tank technical field, including the pay-off piece, still including cutting material device and grinding device, it includes workstation and punching press subassembly to cut the material device, punching press unit mount is equipped with the sliding plate in workstation top and workstation, the one end that the sliding plate slope set up and the sliding plate extends to grinding device's top, grinding device is including accepting piece and polishing piece, polishing piece is located the side of accepting the piece, the place ahead of sliding plate is equipped with locating part and accepts the piece and cooperatees. The utility model discloses a thereby it drives the movable block and removes on the track to drive motor drive driving wheel and ground conflict, two polishing rollers are polished the back to the up end and the lower terminal surface at a work piece border simultaneously, and revolving cylinder work makes the work piece be 90 degrees rotatory back two polishing rollers and polish simultaneously the up end and the lower terminal surface of work piece until the work piece does not have burr slitter edge all around once more.

Description

Device for cutting and deburring metal can

Technical Field

The utility model belongs to the technical field of the metal can technique and specifically relates to a device of burr is got rid of to metal can cutting.

Background

In the existing industrial equipment, building facilities and other fields, metal workpieces with specific shapes are often needed, the workpieces are usually obtained by cutting whole sections of section steel raw materials such as channel steel, angle iron, I-shaped steel and the like, in order to cut the raw material, the existing cutting methods generally include mechanical cutting and thermal cutting, wherein the mechanical cutting refers to cutting the section steel through parts such as a cutter and a saw disc, the thermal cutting refers to hot melting cutting of the section steel through high-temperature heat sources such as laser, plasma and flame, when the workpiece is cut off, the burr and the waste edge of the workpiece are difficult to avoid, the traditional grinding of the burr and the waste edge of the workpiece edge is usually to grind the peripheral edge of the workpiece by manually holding a grinding machine, such a grinding mode is time-consuming and labor-consuming, and the work load of workers is increased because some workpieces need to be ground on two sides.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device of metallic tank cutting deburring to solve among the prior art artifical handheld polisher and polish work piece border department and some work pieces need two-sided polishing the technical problem that wastes time and energy.

The utility model provides a device of burr is got rid of to metallic tank cutting, including the pay-off piece, still including cutting material device and grinding device, grinding device is located the side of cutting material device, it includes workstation and punching press subassembly to cut the material device, punching press unit mount is equipped with the sliding plate that is used for accepting the work piece in workstation top and workstation, the sliding plate slope sets up and the one end of sliding plate extends to grinding device's top, grinding device is including accepting and the piece of polishing, the piece of polishing is located the side of accepting and the one end of accepting extends to the below of sliding plate, the place ahead of sliding plate is equipped with locating part and accepts and cooperatees.

Further, the top of workstation is equipped with the overlap joint piece, it is equipped with the bead to be equipped with the logical groove that supplies the work piece to pass through on the overlap joint piece and lie in the border department that leads to the groove, be equipped with two limit baffle that are used for fixed sliding plate in the workstation, two limit baffle all vertical settings and two limit baffle respectively with the both sides fixed connection of sliding plate, be equipped with the breach of dodging that is used for dodging the work piece on the workstation.

Further, the punching press subassembly includes portal frame, knife rest, drives actuating cylinder and die-cut sword, the portal frame is located the top of overlap joint piece and portal frame and workstation fixed connection, knife rest level sets up and the knife rest is located between portal frame and the overlap joint piece, and die-cut sword is installed on the knife rest and the knife rest below is equipped with the briquetting in advance, be equipped with a plurality of coupling spring between briquetting in advance and the knife rest, all coupling spring's one end and knife rest fixed connection, all coupling spring's the other end and pre-compaction piece fixed connection, the lower terminal surface of briquetting is higher than the lower terminal surface of die-cut sword in advance, drive the vertical downward output shaft that installs in the portal frame top and drive actuating cylinder and pass the top fixed connection of portal frame and knife rest of actuating cylinder.

Furthermore, the bearing piece comprises an electric cylinder, a rotary cylinder and a bearing plate, the electric cylinder is horizontally arranged, the rotary cylinder is fixedly connected with a sliding block arranged on the electric cylinder, and the bearing plate is installed at the output end of the rotary cylinder.

Further, the polishing piece includes movable block, support frame, presses down cylinder and two grinding rollers, support frame and movable block are located the both sides of electric jar respectively, and the support frame is the reinforcing plate that the slope set up on L type and the support frame, presses down the cylinder and is located electric jar directly over and press down the vertical downwardly mounted of cylinder on the support frame, the below of support frame is equipped with presses down the output fixed connection of pressing down plate and pressing down the cylinder, the top of movable block is equipped with the locating plate, and two grinding rollers are from top to bottom the interval set up and two grinding rollers homoenergetic rotate and install on the locating plate, all overlap on two grinding rollers and are equipped with from driving wheel and two and overlap on the driving wheel and be equipped with driving belt, one side from the driving wheel is equipped with rotating electrical.

Furthermore, the bottom of the moving block is provided with a track, the moving block is lapped on the track, a driving motor for driving the moving block to move along the track is embedded in the moving block, an output shaft of the driving motor is provided with a driving wheel fixedly connected with the driving wheel, and the driving wheel is in abutting fit with the ground.

Further, the locating part includes spacing frame, two racks and two propelling movement motors, the one end that spacing frame level set up and spacing frame is equipped with the barrier plate, the other end of spacing frame is equipped with toggle motor and poker rod, the poker rod can the pivoted install on spacing frame, and the output shaft of toggle motor passes through shaft coupling and poker rod fixed connection, is equipped with the driving wheel that a plurality of equidistant set up on the poker rod, and two rack symmetry set up and two racks all with spacing frame fixed connection, all are equipped with the propelling movement gear with rack looks meshing on two propelling movement motor interval sets up and two propelling movement motor's the output shaft.

Compared with the prior art, the beneficial effects of the utility model reside in that:

one of which, the utility model discloses a accept the work piece that the board accepted and fallen from the sliding plate, the slider of its self of electric cylinder drive removes, the slider removes to drive revolving cylinder and installs the board of accepting on revolving cylinder and removes under the pressure board, it contradicts the cooperation to press the work piece on pressure board and the bearing board to press the cylinder drive, thereby it drives the movable block to move on the track with ground conflict drive movable block to drive motor drive driving wheel, rotating motor work drives one and rotates from the driving wheel, one rotates from the driving wheel and drives another and rotate from the driving wheel through the belt, install two polishing rollers on the locating plate and polish to the up end and the lower terminal surface at a work piece border simultaneously, press the cylinder to reset, press the work piece not with accept the work piece conflict on the board, revolving cylinder work makes and accepts 90 degrees rotatory backs of work piece on the board, press the work piece conflict that the board will be accepted to install two polishing rollers on the locating plate of cylinder and advance Go and polish, repeat above-mentioned action until polishing the work piece border department burr slitter edge all around totally to this is effectively with solving among the prior art artifical handheld polisher and polishing work piece border department and some work pieces need two-sided polishing waste time and energy's technical problem.

Two, the utility model discloses in be provided with the locating part, when work piece on the sliding plate moves to accepting the board, two propelling movement gears of simultaneous drive of two propelling movement motors rotate, two propelling movement gears promote two vertical downstream of rack simultaneously, stir the cylinder work on the spacing frame and contradict the cooperation with the front end of work piece and barrier plate, when electric cylinder drive slider removes, two propelling movement gears promote two vertical upstream of rack simultaneously and make spacing frame rise, it can remove through spacing frame's below assigned position to accept the worker on board and overlap joint, the poker rod that sets up on the spacing frame with fix a plurality of poker wheel on the poker rod, a plurality of poker wheel is used for making work piece and barrier plate conflict in order to prevent that the deviation from appearing in the work piece, can't be accurate when polishing to the border department all around of work piece polish.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of a partial three-dimensional structure of the present invention;

fig. 3 is a sectional view of the cutting device of the present invention;

fig. 4 is a schematic perspective view of the polishing device of the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 4;

fig. 6 is a schematic view of a partial three-dimensional structure of the polishing device of the present invention;

figure 7 is a partial cross-sectional view of the polishing member of the present invention.

Reference numerals:

the cutting device comprises a feeding member 0, a cutting device 1, a workbench 11, a sliding plate 111, an overlapping block 112, a through groove 113, a limit baffle 114, an avoiding notch 115, a stamping assembly 12, a portal frame 121, a tool rest 122, a driving cylinder 123, a punching knife 124, a pre-pressing block 125, a connecting spring 126, a polishing device 2, a receiving member 21, an electric cylinder 211, a rotating cylinder 212, a receiving plate 213, a polishing member 22, a moving block 221, a support frame 222, a pressing cylinder 223, a polishing roller 224, a reinforcing plate 225, a pressing plate 226, a positioning plate 227, a driven wheel 228, a transmission belt 229, a rotating motor 2210, a track 2211, a driving motor 2212, a driving wheel 2213, a limiting member 3, a limit frame 31, a blocking plate 311, a toggle motor 312, a toggle rod 313, a toggle wheel 314, a push gear 315, a rack 32 and a push.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following is shown with reference to fig. 1 to 7, the embodiment of the utility model provides a device for deburring is opened to metal can, including pay-off 0, still including opening material device 1 and grinding device 2, grinding device 2 is located the side of opening material device 1, it includes workstation 11 and punching press subassembly 12 to open material device 1, punching press subassembly 12 is installed and is equipped with the sliding plate 111 that is used for accepting the work piece in workstation 11 top and workstation 11, the slope of sliding plate 111 sets up and sliding plate 111's one end extends to grinding device 2's top, grinding device 2 is including accepting 21 and grinding 22, grinding 22 is located the side of accepting 21 and the one end of accepting 21 extends to the below of sliding plate 111, the place ahead of sliding plate 111 is equipped with locating part 3 and the cooperation of accepting 21.

Specifically, the top of the workbench 11 is provided with a lapping block 112, the lapping block 112 is provided with a through groove 113 for a workpiece to pass through, and the lapping block 112 is provided with a convex rib at the edge of the through groove 113, two limit baffles 114 for fixing the sliding plate 111 are arranged in the workbench 11, the two limit baffles 114 are vertically arranged and the two limit baffles 114 are respectively and fixedly connected with two sides of the sliding plate 111, the workbench 11 is provided with an avoidance notch 115 for avoiding the workpiece, the sliding plate 111 can receive the workpiece and can convey the workpiece to the direction of the receiving plate 213, and the limit baffles 114 arranged at two sides of the sliding plate 111 are used for preventing the workpiece from being separated from the sliding plate 111.

Specifically, the stamping assembly 12 includes a portal frame 121, a knife rest 122, a driving cylinder 123 and a punching knife 124, the portal frame 121 is located above the lapping block 112, the portal frame 121 is fixedly connected with the workbench 11, the knife rest 122 is horizontally arranged, the knife rest 122 is located between the portal frame 121 and the lapping block 112, the punching knife 124 is installed on the knife rest 122, a pre-pressing block 125 is arranged below the knife rest 122, a plurality of connecting springs 126 are arranged between the pre-pressing block 125 and the knife rest 122, one end of each connecting spring 126 is fixedly connected with the knife rest 122, the other end of each connecting spring 126 is fixedly connected with the pre-pressing block 125, the lower end face of the pre-pressing block 125 is higher than the lower end face of the punching knife 124, the driving cylinder 123 is vertically and downwardly installed at the top of the portal frame 121, the output shaft of the driving cylinder 123 penetrates through the portal frame 121 and the top of the knife rest 122 to be fixedly connected, and, the raw materials are conveyed to the workbench 11, the driving cylinder 123 drives the tool rest 122 to move downwards, the prepressing block 125 preferably punches the cutter 124 to collide with the raw materials, and the prepressing block 125 punches the raw materials by the cutter 124 after prepressing the raw materials by the prepressing block 125 so as to complete the cutting operation of the raw materials.

Specifically, the receiving unit 21 includes an electric cylinder 211, a rotary cylinder 212, and a receiving plate 213, the electric cylinder 211 is horizontally disposed, the rotary cylinder 212 is fixedly connected to a slider disposed on the electric cylinder 211, the receiving plate 213 is mounted on an output end of the rotary cylinder 212, the electric cylinder 211 can drive the slider to horizontally move, and the rotary cylinder 212 can drive the receiving plate 213 to rotate 90 degrees.

Specifically, the grinding member 22 includes a moving block 221, a support frame 222, a pressing cylinder 223 and two grinding rollers 224, the support frame 222 and the moving block 221 are respectively located at two sides of the electric cylinder 211, the support frame 222 is L-shaped, the support frame 222 is provided with an obliquely arranged reinforcing plate 225, the pressing cylinder 223 is located right above the electric cylinder 211, the pressing cylinder 223 is vertically and downwardly installed on the support frame 222, the pressing plate 226 is arranged below the support frame 222, the output end of the pressing cylinder 223 is fixedly connected with the pressing plate 226, the top of the moving block 221 is provided with a positioning plate 227, the two grinding rollers 224 are vertically and alternately arranged, the two grinding rollers 224 can be rotatably installed on the positioning plate 227, the two grinding rollers 224 are respectively sleeved with a driven wheel 228, the two driven wheels 228 are sleeved with a transmission belt 229, a rotary motor 2210 is arranged beside one driven wheel 228, and the output shaft of the rotary motor 2210 is, the rotation motor 2210 operates to rotate one driven wheel 228, one driven wheel 228 rotates to rotate the other driven wheel 228 through a belt, and two grinding rollers 224 mounted on the positioning plate 227 simultaneously grind the upper end surface and the lower end surface of one edge of the workpiece.

Specifically, the bottom of the moving block 221 is provided with a track 2211, the moving block 221 is connected to the track 2211 in a lap joint manner, a driving motor 2212 for driving the moving block 221 to move along the track 2211 is embedded in the moving block 221, an output shaft of the driving motor 2212 is provided with a driving wheel 2213 fixedly connected with the driving wheel 2212, the driving wheel 2213 is in interference fit with the ground, the driving wheel 2213 is driven by the driving motor 2212 to be in interference fit with the ground so as to drive the moving block 221 to move on the track 2211, and the moving block 221 can drive the two grinding rollers 224 to move on a workpiece by moving on the track 2211.

Specifically, the limiting member 3 includes a limiting frame 31, two racks 32 and two pushing motors 33, the limiting frame 31 is horizontally disposed, one end of the limiting frame 31 is provided with a blocking plate 311, the other end of the limiting frame 31 is provided with a toggle motor 312 and a toggle rod 313, the toggle rod 313 is rotatably mounted on the limiting frame 31, an output shaft of the toggle motor 312 is fixedly connected with the toggle rod 313 through a coupler, the toggle rod 313 is provided with a plurality of toggle wheels 314 disposed at equal intervals, the two racks 32 are symmetrically disposed and both the two racks 32 are fixedly connected with the limiting frame 31, the two pushing motors 33 are disposed at intervals and output shafts of the two pushing motors 33 are both provided with pushing gears 315 engaged with the racks 32, when a workpiece on the sliding plate 111 moves onto the receiving plate 213, the two pushing motors 33 simultaneously drive the two pushing gears 315 to rotate, two push gears 315 simultaneously promote two rack 32 vertical downstream, the cooperation of contradicting the front end with the barrier plate 311 of the work piece is driven to the toggle cylinder work on the spacing frame 31, when electric cylinder 211 drive slider removed, two push gears 315 promote two rack 32 vertical upstream simultaneously and make spacing frame 31 rise, socket plate 213 and the worker of overlap joint on socket plate 213 can remove through the lower direction assigned position of spacing frame 31, the poker rod 313 that sets up on the spacing frame 31 and a plurality of dial wheel 314 of fixing on poker rod 313, a plurality of dial wheel 314 are used for making work piece and barrier plate 311 conflict in order to prevent that the deviation from appearing in the work piece, can't be accurate when polishing the border department all around the work piece.

The utility model discloses a theory of operation: when the utility model is used, raw materials are conveyed to the direction of the cutting device 1 through the feeding part 0, the raw materials are conveyed to the workbench 11, the driving cylinder 123 drives the tool rest 122 to move downwards, the prepressing block 125 preferably presses against the raw materials, the prepressing block 125 presses the raw materials in advance, then the prepressing block 124 presses against the raw materials to cut the raw materials so as to complete the cutting operation of the raw materials, the workpiece punched from the raw materials falls onto the sliding plate 111 through the through groove 113 and the avoiding notch 115, the receiving plate 213 receives the workpiece falling from the sliding plate 111, the electric cylinder 211 drives the sliding block of the electric cylinder 211 to move, the sliding block moves to drive the rotating cylinder 212 and the receiving plate 213 arranged on the rotating cylinder 212 to move under the pressing plate 226, the pressing cylinder 223 drives the pressing plate 226 to be in interference fit with the workpiece on the receiving plate, the motor 2212 driving belt 2213 is in interference with the ground so as to drive the moving block 221 to move on, the rotating motor 2210 works to drive one driven wheel 228 to rotate, one driven wheel 228 rotates to drive the other driven wheel 228 to rotate through a belt, two polishing rollers 224 arranged on the positioning plate 227 simultaneously polish the upper end surface and the lower end surface of one edge of a workpiece, the pressing cylinder 223 resets, the pressing plate 226 does not abut against the workpiece on the receiving plate 213, after the rotating cylinder 212 works to enable the workpiece on the receiving plate 213 to rotate by 90 degrees, the pressing cylinder 223 works to abut against the workpiece on the receiving plate 213 and is arranged on the positioning plate 227 and the two polishing rollers 224 simultaneously polish the upper end surface and the lower end surface of one edge of the workpiece, and the actions are repeated until burr and waste edges at the edges around the workpiece are polished completely.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A device for cutting and deburring a metal can comprises a feeding piece (0) and is characterized by also comprising a cutting device (1) and a polishing device (2), the grinding device (2) is positioned beside the cutting device (1), the cutting device (1) comprises a workbench (11) and a stamping assembly (12), the stamping component (12) is arranged at the top of the workbench (11), a sliding plate (111) for bearing a workpiece is arranged in the workbench (11), the sliding plate (111) is obliquely arranged, one end of the sliding plate (111) extends to the upper part of the grinding device (2), the grinding device (2) comprises a bearing piece (21) and a grinding piece (22), the grinding piece (22) is positioned at the side of the bearing piece (21) and one end of the bearing piece (21) extends to the lower part of the sliding plate (111), a limiting piece (3) is arranged in front of the sliding plate (111), and the limiting piece (3) is matched with the bearing piece (21).

2. The device for deburring the cut materials of the metal cans according to claim 1, wherein a lapping block (112) is arranged at the top of the workbench (11), a through groove (113) for the workpieces to pass through is formed in the lapping block (112), a convex rib is arranged on the lapping block (112) and located at the edge of the through groove (113), two limit baffles (114) for fixing the sliding plate (111) are arranged in the workbench (11), the two limit baffles (114) are vertically arranged, the two limit baffles (114) are respectively and fixedly connected with two sides of the sliding plate (111), and an avoiding notch (115) for avoiding the workpieces is formed in the workbench (11).

3. The device for deburring the cut materials of the metal cans according to claim 2, wherein the stamping assembly (12) comprises a portal frame (121), a knife rest (122), a driving cylinder (123) and a punching knife (124), the portal frame (121) is positioned above the overlapping block (112), the portal frame (121) is fixedly connected with the workbench (11), the knife rest (122) is horizontally arranged, the knife rest (122) is positioned between the portal frame (121) and the overlapping block (112), the punching knife (124) is arranged on the knife rest (122), a prepressing block (125) is arranged below the knife rest (122), a plurality of connecting springs (126) are arranged between the prepressing block (125) and the knife rest (122), one end of each connecting spring (126) is fixedly connected with the knife rest (122), the other end of each connecting spring (126) is fixedly connected with the prepressing block (125), the lower end face of the prepressing block (125) is higher than the lower end face of the punching knife (124), the driving cylinder (123) is vertically and downwards mounted at the top of the portal frame (121), and an output shaft of the driving cylinder (123) penetrates through the portal frame (121) to be fixedly connected with the top of the tool rest (122).

4. The device for deburring of the cut material of the metal can as claimed in claim 1, characterized in that said adapting piece (21) comprises an electric cylinder (211), a rotary cylinder (212) and an adapting plate (213), said electric cylinder (211) is horizontally arranged and the rotary cylinder (212) is fixedly connected with a slide block arranged on the electric cylinder (211), said adapting plate (213) is mounted on the output end of the rotary cylinder (212).

5. The device for deburring cut metal cans according to claim 4, wherein the grinding member (22) comprises a moving block (221), a support frame (222), a pressing cylinder (223) and two grinding rollers (224), the support frame (222) and the moving block (221) are respectively located on two sides of the electric cylinder (211), the support frame (222) is L-shaped, a reinforcing plate (225) is obliquely arranged on the support frame (222), the pressing cylinder (223) is located right above the electric cylinder (211), the pressing cylinder (223) is vertically and downwardly installed on the support frame (222), the pressing plate (226) is arranged below the support frame (222), the pressing plate (226) is fixedly connected with the output end of the pressing cylinder (223), a positioning plate (227) is arranged at the top of the moving block (221), the two grinding rollers (224) are vertically arranged at intervals, and the two grinding rollers (224) can be rotatably installed on the positioning plate (227), two grinding rollers (224) are respectively sleeved with a driven wheel (228), two driven wheels (228) are sleeved with a transmission belt (229), one driven wheel (228) is arranged beside a rotating motor (2210), and an output shaft of the rotating motor (2210) is fixedly connected with the driven wheel (228).

6. The device for deburring of cut metal cans according to claim 5, wherein the bottom of the moving block (221) is provided with a track (2211) and the moving block (221) is lapped on the track (2211), a driving motor (2212) for driving the moving block (221) to move along the track (2211) is embedded in the moving block (221), a driving wheel (2213) fixedly connected with the driving motor is arranged on an output shaft of the driving motor (2212), and the driving wheel (2213) is in interference fit with the ground.

7. The device for deburring cut metal cans according to claim 1, wherein the limiting member (3) comprises a limiting frame (31), two racks (32) and two pushing motors (33), the limiting frame (31) is horizontally arranged, a blocking plate (311) is arranged at one end of the limiting frame (31), a toggle motor (312) and a toggle rod (313) are arranged at the other end of the limiting frame (31), the toggle rod (313) is rotatably arranged on the limiting frame (31), an output shaft of the toggle motor (312) is fixedly connected with the toggle rod (313) through a coupler, a plurality of toggle wheels (314) which are arranged at equal intervals are arranged on the toggle rod (313), the two racks (32) are symmetrically arranged, the two racks (32) are fixedly connected with the limiting frame (31), the two pushing motors (33) are arranged at intervals, and pushing gears (32) meshed with the output shafts of the two pushing motors (33) are arranged at intervals 315).