CN113120283A

CN113120283A - Cutting device is used in production of no box leather strap package

Info

Publication number: CN113120283A
Application number: CN202110411995.0A
Authority: CN
Inventors: 曾向阳
Original assignee: Jiangsu Jingerun Technology Co ltd
Current assignee: Jiangsu Jingerun Technology Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-07-16
Anticipated expiration: 2041-04-16
Also published as: CN113120283B

Abstract

The invention belongs to the technical field of box-free leather strip packaging, and particularly relates to a cutting device for producing box-free leather strip bags. The invention can effectively carry out five-box packing operation on the product, has high packing efficiency and good packing consistency, overcomes the defect that a large amount of resources are wasted in the traditional box packing, can finish the packing operation on the product by using the leather strips, lightens the labor intensity of packing personnel, saves packing materials and improves economic benefits.

Description

Cutting device is used in production of no box leather strap package

Technical Field

The invention relates to the technical field of box-free leather strip packaging, in particular to a cutting device for producing box-free leather strip bags.

Background

The finished products need to be bundled and packaged in the process of processing the products, the products are placed in a packaging box for packaging in the conventional mode, the products with light weight and consistent product specifications, such as cigarettes, small bag packaging paper and the like, are packaged by the packaging box, the operation in the packaging process is troublesome, the labor amount is large, meanwhile, the packaging box consumes a large amount of resources, and a large amount of resources are seriously wasted, so that the cutting device for producing the box-free leather strip bag is needed.

Disclosure of Invention

The invention provides a cutting device for producing a boxless leather strip bag, which solves the problems in the prior art.

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

a cutting device for producing a boxless leather strip bag comprises a bottom plate, wherein a feeding roller is movably sleeved at the top of the bottom plate, two groups of extrusion rollers movably sleeved with the bottom plate are installed on one side of the feeding roller, an adsorption mechanism fixedly connected with the bottom plate is installed on the same side, away from the feeding roller, of the two groups of extrusion rollers, a winding mechanism is installed on one side of the adsorption mechanism, the winding mechanism comprises a rotating plate arranged on one side of the adsorption mechanism and used for rotating, a conveying mechanism is installed on one side, away from the extrusion rollers, of the winding mechanism, a clamping mechanism is installed at the top of the conveying mechanism, and the clamping mechanism comprises a support of an L-shaped structure arranged at the top of the conveying mechanism;

the adsorption device includes the axis of rotation that cup joints with the bottom plate activity, and the fixed cover in one end that the axis of rotation stretches out the bottom plate top has connect the deflector, the deflector rigid coupling has the mounting panel that sets up along its length direction, and the mounting panel is close to one side of winding mechanism and installs the adsorption plate that sets up along its length direction, the one end rigid coupling that the mounting panel is close to conveying mechanism has the opening towards the housing that winding mechanism set up, and the inside activity of housing has cup jointed the screw rod one that sets up along vertical direction, and the output screw thread of screw rod one has cup jointed the movable block with mounting panel sliding connection, the movable block slides and has cup jointed the cutter that sets up along.

Preferably, the top rigid coupling of rotor plate has the storage tank of the U type structure that sets up along its length direction, the storage tank runs through the slide that sets up along rotor plate length direction along one side that rotor plate length direction set up, and the cross section of slide is T type structure, the internally mounted of slide has the dwang that sets up with rotor plate length direction is perpendicular, the dwang stretches into the one end rigid coupling that sets up to the storage tank inside from the slide has the tip apron, the dwang stretches out the one end fixed cover that the storage tank has the gear, the gear is close to conveying mechanism's one end meshing has the rack that sets up along vertical direction, the bottom rigid coupling of rack has the guide arm, the bottom slip of guide arm has cup jointed the sleeve with the rotor plate rigid coupling, the guide arm stretches into telescopic one end and installs the spring, the one end activity that conveying mechanism was kept away from to.

Preferably, the bottom of the bracket is provided with a connecting plate, one side of the connecting plate, which is far away from the winding mechanism, is provided with a first chute arranged along the vertical direction, an internal slide way of the first chute is connected with a first slider, one end of the first slider, which extends out of the first chute, is provided with a first pushing unit fixedly connected with the bracket and arranged along the horizontal direction, one end of the connecting plate, which is close to the winding mechanism, is provided with an extending plate arranged along the length direction of the bottom plate, the middle position of the bottom of the extending plate is provided with a mounting groove arranged along the length direction, the inside of the mounting groove is movably sleeved with a second screw rod arranged along the length direction of the extending plate, the periphery of the second screw rod is sleeved with an end part clamping plate in a sliding connection with the inner side wall of the mounting groove in a threaded manner, two sides of, the side splint rigid coupling adjacent with adsorption apparatus has the push pedal that is used for promoting the rack and removes, and the push pedal is located the side splint of keeping away from the tip splint of side splint, and the tip baffle with extension board rigid coupling is installed to the one side that the connecting plate was kept away from to the tip splint.

Preferably, the top of the extension plate is fixedly connected with a third pushing unit, the top of the third pushing unit is provided with a second sliding groove located at the bottom of the support, and the top of the third pushing unit is in sliding connection with the second sliding groove.

Preferably, the one end that the material loading roller stretches out the bottom plate bottom is installed motor one, and the one end that the axis of rotation stretches out the bottom plate is installed motor two, and the axis of rotation is located the extension line of the side of installing panel one side is kept away from to the adsorption plate.

Preferably, a cavity arranged along the length direction of the adsorption plate is reserved in the adsorption plate, one side of the adsorption plate, which is far away from the mounting plate, is provided with an adsorption hole communicated with the cavity, one side of the adsorption plate is provided with an air pipe communicated with the cavity,

preferably, one side of the mounting plate, which is close to the housing, is provided with a first guide groove which is arranged along the axial direction of the feeding roller, two ends of the first guide groove are provided with a second guide groove which is symmetrically arranged along the axial direction of the first guide groove, the second guide groove is obliquely and upwards arranged, and the first guide groove is sleeved with a cross rod fixedly connected with the cutter in a sliding manner.

In the present invention,

through the bottom plate that sets up, the material loading roller, the squeeze roll, adsorption apparatus constructs, winding mechanism, conveying mechanism, fixture, the axis of rotation, the deflector, the mounting panel, the adsorption plate, the housing, screw rod one, the movable block, the cutter, guiding groove one, guiding groove two, the rotor plate, the storage tank, the slide, the tip apron, the dwang, the gear, rack and fastening screw, this design can effectually carry out five boxes of leather strap packing operations to the product, packaging efficiency is high, the packing uniformity is good, change the tradition and have the shortcoming of the extravagant a large amount of resources of box packing, utilize the leather strap just can accomplish the packing operation to the product, alleviate packer intensity of labour, save packaging material and improve economic benefits.

Drawings

FIG. 1 is a schematic structural diagram of a cutting device for producing a boxless leather strip bag according to the present invention;

FIG. 2 is a partially enlarged structural schematic view of a cutting device A for producing a boxless leather strip bag according to the present invention;

FIG. 3 is a partially enlarged schematic structural view of a cutting device B for producing a boxless leather strip bag according to the present invention;

FIG. 4 is a schematic structural view of a cutting device chute for producing a boxless leather strip bag according to the present invention;

FIG. 5 is a schematic structural diagram of a first guiding groove and a second guiding groove of a cutting device for producing a boxless leather strap pack, which are distributed in the invention;

fig. 6 is a schematic structural diagram of a cutting device clamping mechanism for producing a boxless leather strip bag according to the present invention.

In the figure: the device comprises a base plate 1, a feeding roller 2, a squeezing roller 3, an adsorption mechanism 5, a winding mechanism 6, a conveying mechanism 7, a clamping mechanism 8, a rotating shaft 51, a deflection plate 52, a mounting plate 53, an adsorption plate 54, a housing 55, a screw rod I56, a movable block 57, a cutter 58, a guide groove I59, a guide groove II 510, a rotating plate 61, a storage groove 62, a slide rail 63, an end cover plate 64, a rotating rod 65, a gear 66, a rack 67, a fastening screw rod 68, a bracket 81, a connecting plate 82, an extension plate 83, a pushing unit I84, a pushing unit III 85, a sliding groove II 86, a mounting groove 87, a screw rod II 88, an end clamping plate 89, an end clamping plate 810, a side clamping plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-6, a cutting device for producing a boxless leather strip bag comprises a base plate 1, a feeding roller 2 is movably sleeved on the top of the base plate 1, two groups of squeezing rollers 3 movably sleeved with the base plate 1 are mounted on one side of the feeding roller 2, an adsorption mechanism 5 fixedly connected with the base plate 1 is mounted on the same side, away from the feeding roller 2, of the two groups of squeezing rollers 3, a winding mechanism 6 is mounted on one side of the adsorption mechanism 5, the winding mechanism 6 comprises a rotating plate 61 arranged on one side of the adsorption mechanism 5 and used for rotating, a conveying mechanism 7 is mounted on one side, away from the squeezing rollers 3, of the winding mechanism 5, a clamping mechanism 8 is mounted on the top of the conveying mechanism 7, and the clamping mechanism 8 comprises a support 81 of an L-shaped structure arranged;

further, adsorption apparatus 5 includes the axis of rotation 51 that cup joints with the activity of bottom plate 1, the fixed cover in one end that axis of rotation 51 stretches out bottom plate 1 top has connect deflector 52, the deflector 52 rigid coupling has along its length direction setting mounting panel 53, the mounting panel 53 is close to one side of winding mechanism 6 and installs along its length direction setting adsorption plate 54, the one end rigid coupling that mounting panel 53 is close to conveying mechanism 7 has the opening towards the housing 55 that winding mechanism 6 set up, the inside activity of housing 55 has cup jointed the screw rod 56 that sets up along vertical direction, the output screw thread of screw rod 56 has cup jointed the movable block 57 with mounting panel 53 sliding connection, movable block 57 sliding cup jointed the cutter 58 that sets up along axis of rotation 51 length.

Specifically, a storage groove 62 with a U-shaped structure is fixedly connected to the top of the rotating plate 61 along the length direction, a slide 63 arranged along the length direction of the rotating plate 61 penetrates through the side edge of one side of the storage groove 62 arranged along the length direction of the rotating plate 61, the cross section of the slide way 63 is of a T-shaped structure, a rotating rod 65 which is perpendicular to the length direction of the rotating plate 61 is installed inside the slide way 63, an end cover plate 64 is fixedly connected to one end, extending into the storage groove 61, of the rotating rod 65, a gear 66 is fixedly sleeved on one end, extending out of the storage groove 61, of the rotating rod 65, a rack 67 which is arranged in the vertical direction is meshed with one end, close to the conveying mechanism 7, of the gear 66, a guide rod is fixedly connected to the bottom of the rack 67, a sleeve which is fixedly connected with the rotating plate 61 is sleeved on the bottom of the guide rod in a sliding mode, a spring is installed at one end, extending into the sleeve, of the guide rod, and a fastening screw 68 of the T-;

the moving mechanism that sets up with 1 top rigid coupling of bottom plate and along 1 length direction of bottom plate is installed to the bottom of rotor plate 61, and moving mechanism adopts sharp module, and rotating electrical machines is installed to moving mechanism's top output, and rotating electrical machines top output and rotor plate 61 bottom intermediate position rigid coupling, the support frame is installed to the bottom of bottom plate 1.

Particularly, a connecting plate 82 is installed at the bottom of the bracket 81, a first sliding groove arranged along the vertical direction is formed in one side, far away from the winding mechanism 6, of the connecting plate 82, a first sliding block is connected to an internal slide way of the first sliding groove, a first pushing unit 84 fixedly connected with the bracket 81 and arranged along the horizontal direction is installed at one end, far away from the first sliding groove, of the first sliding block, an extending plate 83 arranged along the length direction of the bottom plate 1 is installed at one end, close to the winding mechanism 6, of the connecting plate 82, a mounting groove 87 arranged along the length direction of the extending plate 83 is formed in the middle position of the bottom of the extending plate 83, a second screw rod 88 arranged along the length direction of the extending plate 83 is movably sleeved in the mounting groove 87, a third motor is installed at one end, a third end clamping plate 89 slidably connected with the inner side wall of the mounting groove 87 is sleeved on the periphery of, two sets of side splint 811 keep away from each other one equal rigid coupling have with the promotion unit two of extension board 83 rigid coupling, the side splint 811 rigid coupling adjacent with adsorption apparatus 5 has the push pedal 812 that is used for promoting the rack 67 and removes, and push pedal 812 is located the side that tip splint 89 were kept away from to side splint 811, and tip baffle 810 with the extension board 83 rigid coupling is installed to the one side that connecting plate 82 was kept away from to tip splint 89.

It should be noted that the top of the extension plate 83 is fixedly connected with a third pushing unit 85, the top of the pushing unit 3 is provided with a second sliding slot 86 located at the bottom of the bracket 81, and the top of the third pushing unit 85 is slidably connected with the second sliding slot 86.

In addition, a first motor is installed at one end of the feeding roller 2 extending out of the bottom plate 1, a second motor is installed at one end of the rotating shaft 51 extending out of the bottom plate 1, and the axis of the rotating shaft 51 is located on an extension line of the side face of the adsorption plate 54 far away from the installation plate 53.

In addition, a cavity arranged along the length direction is reserved in the adsorption plate 54, an adsorption hole communicated with the cavity is arranged on one side of the adsorption plate 54 away from the mounting plate 53, an air pipe communicated with the cavity is arranged on one side of the adsorption plate 54,

furthermore, one side of the mounting plate 53, which is close to the housing 55, is provided with a first guide groove 59 which is arranged along the axial direction of the feeding roller 2, two ends of the first guide groove 59 are provided with second guide grooves 510 which are symmetrically arranged along the axial direction of the first guide groove, the second guide grooves 510 are obliquely and upwards arranged, and the first guide groove 59 is sleeved with a cross rod fixedly connected with the cutter 58 in a sliding manner;

the first embodiment;

conveying mechanism 7 adopts the belt conveyor line, and conveying mechanism 7 is close to the one end top rigid coupling of fixture 8 and has the groove that blocks of U type structure, and blocks the groove opening and be located the one side that fixture 8 was kept away from in the groove that blocks, blocks the both sides of groove opening part and installs the guide board that the slope set up.

The working principle is as follows: when in use, firstly, the packages to be packaged are arranged and placed on the conveying mechanism 7 in order, the conveying mechanism 7 conveys the packages to the blocking groove along the opening of the blocking groove for positioning, at this time, the third pushing unit 85 on the holding mechanism 8 is activated to push the extension plate 83 downward, so that the extension plate 83 moves to the top position of the package, and then the package is placed between the two sets of side guards 811, and the second pushing unit on the two sets of side guards 811 is activated to make the two sets of side guards 811 perform holding operation on the package, when the clamping is finished, the third pushing unit is started to move the extension plate 83 upwards, then the first pushing unit 84 is started to push the extension plate 83 to the upper part of the winding mechanism 6, and simultaneously the third motor on the second screw 88 on the end clamping plate 89 is started, the end clamp plate 89 pushes the clamped package in the direction of the end stop 810 to position under the action of the screw thread;

after the positioning is completed, the third pushing unit 85 is started, the extending plate 83 drives the clamped package to extend into the opening at the top of the storage groove 62 of the winding mechanism 6, meanwhile, the pushing plate 812 on the side clamping plate 811 pushes the rack 67 downwards, at the moment, the rack 67 drives the gear 66 to rotate, the gear 66 drives the rotating rod 65 and the end cover plate 64 to turn over, so that the package can conveniently extend into the opening at the top of the storage groove 62, after the package is placed into the storage groove 62, the third pushing unit 85 is started to drive the extending plate 83 to move upwards, and then the third pushing unit 85 is started to enable the extending plate 83 to move to the initial position;

during winding, a winding drum with a packaging belt is arranged in the feeding roller 2, the packaging belt is arranged along the direction of the adsorption mechanism 5 between the two groups of extrusion rollers 3 after being drawn out, at the moment, a bottom belt on the packaging belt is separated from an adhesive belt of the packaging belt, one side without adhesive is adsorbed on the adsorption plate 54, the bottom belt is wound on the material receiving roller which is arranged at one side of the two groups of extrusion rollers 3 and movably sleeved with the bottom plate 1, meanwhile, a second motor on the rotating shaft 51 is started in the feeding process, the rotating shaft 51 drives the deflection plate 52 to deflect upwards, the adhesive belt is not contacted with a packaging piece in the feeding process of the packaging piece, the second motor is started after the feeding is finished, the deflection plate 52 moves, the adhesive belt is adhered to the outer side of the placed packaging piece, at the moment, the linear module is started, the rotating plate 61 moves towards the conveying mechanism 7, and the adsorption plate 54 does not adsorb the adhesive belt, at this time, the packaging piece starts to pull the adsorption belt, the top of the packaging piece moves to the end position of the bottom of the adsorption plate 52 at an included angle, then the rotating motor is started to rotate the placed packaging piece, the adsorption belt is adhered to the outer side of the packaging piece in a surrounding mode in the rotating process of the packaging piece to finish the packaging operation, after the packaging is finished, the adsorption plate 54 adsorbs the adsorption belt, meanwhile, the driving motor for driving the screw rod I56 to rotate is started to drive the screw rod I56 to rotate, so that the movable block 57 drives the cutting knife 58 to move, the cross rod on the cutting knife 58 moves in the direction from the guide groove II 510 to the guide groove I59 to the guide groove II 510, so that the cutting knife 58 is good when moving, firstly extends out of the housing 55 and then cuts materials, and extends into the housing 55 after the cutting is finished, and when the materials are cut, the packaged packaging;

this design can be effectual carry out five box skin strip packing operations to the product, and packing efficiency is high, and the packing uniformity is good, changes the tradition and has the shortcoming of the extravagant a large amount of resources of box packing, utilizes the skin strip just can accomplish the packing operation to the product, alleviates packer intensity of labour, saves packaging material and improves economic benefits.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A cutting device for producing a boxless leather strip bag comprises a bottom plate (1) and is characterized in that, the top of the bottom plate (1) is movably sleeved with a feeding roller (2), one side of the feeding roller (2) is provided with two groups of squeeze rollers (3) which are movably sleeved with the bottom plate (1), the same sides of the two groups of squeeze rollers (3) far away from the feeding roller (2) are provided with adsorption mechanisms (5) fixedly connected with the bottom plate (1), a winding mechanism (6) is arranged on one side of the adsorption mechanism (5), the winding mechanism (6) comprises a rotating plate (61) which is arranged on one side of the adsorption mechanism (5) and used for rotating, a conveying mechanism (7) is arranged on one side of the winding mechanism (5) far away from the extrusion roller (3), the top of the conveying mechanism (7) is provided with a clamping mechanism (8), and the clamping mechanism (8) comprises an L-shaped bracket (81) arranged at the top of the conveying mechanism (7);

the adsorption mechanism (5) comprises a rotating shaft (51) movably sleeved with the bottom plate (1), a deflection plate (52) is fixedly sleeved at one end of the rotating shaft (51) extending out of the top of the bottom plate (1), the deflecting plate (52) is fixedly connected with a mounting plate (53) arranged along the length direction of the deflecting plate, one side of the mounting plate (53) close to the winding mechanism (6) is provided with an adsorption plate (54) arranged along the length direction of the mounting plate, one end of the mounting plate (53) close to the conveying mechanism (7) is fixedly connected with a housing (55) with an opening arranged towards the winding mechanism (6), a screw rod I (56) arranged along the vertical direction is movably sleeved in the housing (55), a movable block (57) in sliding connection with the mounting plate (53) is sleeved on the output end of the screw rod I (56) in a threaded manner, the movable block (57) is sleeved with a cutter (58) which is arranged along the length of the rotating shaft (51) in a sliding manner.

2. The cutting device for producing the cartridgeless leather strap bag according to claim 1, wherein the top of the rotating plate (61) is fixedly connected with a storage groove (62) with a U-shaped structure arranged along the length direction of the rotating plate, one side edge of the storage groove (62) arranged along the length direction of the rotating plate (61) penetrates through a slide way (63) arranged along the length direction of the rotating plate (61), the cross section of the slide way (63) is T-shaped, a rotating rod (65) arranged perpendicular to the length direction of the rotating plate (61) is arranged in the slide way (63), one end of the rotating rod (65) extending into the storage groove (61) from the slide way (63) is fixedly connected with an end cover plate (64), one end of the rotating rod (65) extending out of the storage groove (61) is connected with a fixed sleeve gear (66), one end of the gear (66) close to the conveying mechanism (7) is engaged with a rack (67) arranged along the, the bottom rigid coupling of rack (67) has the guide arm, and the bottom of guide arm slides to cup joint the sleeve with rotor plate (61) rigid coupling, and the spring is installed to telescopic one end to the guide arm stretch into, and the one end activity that conveying mechanism (7) was kept away from in gear (66) has cup jointed fastening screw (68) with the T type structure of slide (63) butt.

3. The cutting device for producing the boxless leather strip bag according to claim 1, characterized in that a connecting plate (82) is installed at the bottom of the bracket (81), a first chute arranged along the vertical direction is formed in one side, away from the winding mechanism (6), of the connecting plate (82), a first sliding way in the first chute is connected with a first sliding block, a first pushing unit (84) fixedly connected with the bracket (81) and arranged along the horizontal direction is installed at one end, extending out of the first chute, of the first sliding block, an extending plate (83) arranged along the length direction of the bottom plate (1) is installed at one end, close to the winding mechanism (6), of the connecting plate (82), a mounting groove (87) arranged along the length direction is formed in the middle position of the bottom of the extending plate (83), a second screw rod (88) arranged along the length direction of the extending plate (83) is movably sleeved in the mounting groove (87), and an end clamping plate (89) connected with the inner side wall of the mounting groove (87, side splint (811) that set up along extension board (83) length direction are all installed to the both sides of tip splint (89), an equal rigid coupling that keeps away from each other of two sets of side splint (811) has the promotion unit two with extension board (83) rigid coupling, side splint (811) rigid coupling adjacent with adsorption apparatus structure (5) have push pedal (812) that are used for promoting rack (67) and remove, and push pedal (812) are located one side that tip splint (89) were kept away from to side splint (811), tip splint (89) are kept away from one side of connecting plate (82) and are installed and are extended tip baffle (810) of board (83) rigid coupling.

4. The cutting device for producing the boxless leather strip bag according to claim 3, wherein a third pushing unit (85) is fixedly connected to the top of the extending plate (83), a second sliding groove (86) located at the bottom of the support (81) is formed in the top of the pushing unit (3), and the top of the third pushing unit (85) is slidably connected with the second sliding groove (86).

5. The cutting device for producing the cartridgeless leather strip bag according to claim 1, wherein a first motor is mounted at the end of the feeding roller (2) extending out of the bottom of the base plate (1), a second motor is mounted at the end of the rotating shaft (51) extending out of the base plate (1), and the axis of the rotating shaft (51) is located on the extension line of the side surface of the suction plate (54) far away from the mounting plate (53).

6. The cutting device for producing the cartridgeless leather strip bag according to claim 1, wherein a cavity arranged along a length direction of the suction plate (54) is reserved inside the suction plate (54), a suction hole communicated with the cavity is arranged on one side of the suction plate (54) far away from the mounting plate (53), and an air pipe communicated with the cavity is arranged on one side of the suction plate (54).

7. The cutting device for producing the boxless leather strap packets as claimed in claim 1, wherein a first guide groove (59) arranged along the axial direction of the feeding roller (2) is formed in one side, close to the housing (55), of the mounting plate (53), a second guide groove (510) symmetrically arranged along the axial direction of the first guide groove (59) is formed in each of two ends of the first guide groove (59), the second guide groove (510) is obliquely and upwards arranged, and a cross rod fixedly connected with the cutter (58) is sleeved on the first guide groove (59) in a sliding manner.