CN210491692U

CN210491692U - Squeezing cutting trembling digging type green Chinese onion harvester

Info

Publication number: CN210491692U
Application number: CN201920971687.1U
Authority: CN
Inventors: 王方艳; 潘永菲; 孙光全; 张钦
Original assignee: Qingdao Agricultural University
Current assignee: Qingdao Agricultural University
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-05-12
Anticipated expiration: 2029-06-26

Abstract

The utility model discloses a crowded formula green Chinese onion harvester that surely trembles and dig relates to green Chinese onion results technical field, including the frame, still including setting up the subassembly of excavating of frame front end, it includes to excavate the subassembly: the excavating disk is rotatably arranged on the frame; the sliding cavity is arranged on the rack and is positioned behind the excavating disk; the digging shovel is arranged in the sliding cavity in a sliding mode; one end of the elastic piece is abutted against the sliding cavity, and the other end of the elastic piece is abutted against the excavating shovel; and the cam is rotationally arranged in the digging shovel and is abutted against the digging shovel, and the cam and the elastic piece are positioned on two sides of the digging shovel. The beneficial effects of the utility model are that, realize that the shake of green Chinese onion excavates and the shake is clear native, realize the shake of digger blade by cam mechanism, can guarantee that green Chinese onion shake low resistance excavates and the shake of trembling the native roller is clear native, great improvement the excavation efficiency and the quality of green Chinese onion.

Description

Squeezing cutting trembling digging type green Chinese onion harvester

Technical Field

The utility model relates to a green Chinese onion results technical field, especially a crowded formula green Chinese onion harvester that surely trembles and digs.

Background

The scallion is a commonly used food material, particularly in northern areas of China, Japan, Korea and the like, and is a main daily necessary food material, which not only has rich nutritional value, but also has considerable medicinal value. The herba Alii Fistulosi has effects of benefiting lung, activating yang, inducing sweat, relieving exterior syndrome, promoting lactation, stopping bleeding, relieving pain, healing wound, removing toxic substance, flavoring, and preventing cancer, and can be used for treating dysentery, abdominal pain, arthritis, constipation, etc.

At present, China is the main planting country of the green Chinese onions in the world, the planting area is large, and the efficiency is very low if manpower is adopted in the harvesting process. The existing harvester usually excavates the green Chinese onions in the green Chinese onions harvesting process, then shakes off soil attached to the roots, and an excavating shovel of the green Chinese onions harvester in the design scheme is generally fixed and excavating, so that excavating resistance is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at improving the excavation efficiency of green Chinese onion, reducing and excavating the resistance, making the excavation of green Chinese onion more convenient, can reduce adhering to of green Chinese onion root soil at the excavation in-process, designed a crowded formula green Chinese onion harvester of surely trembling and excavating.

In order to realize above-mentioned purpose, the technical scheme of the utility model be, a crowded cutting trembles formula green Chinese onion harvester of digging, including the frame, still including setting up the subassembly of digging of frame front end, it includes to excavate the subassembly: the excavating disk is rotatably arranged on the frame; the sliding cavity is arranged on the rack and is positioned behind the excavating disk; the digging shovel is arranged in the sliding cavity in a sliding mode; one end of the elastic piece is abutted against the sliding cavity, and the other end of the elastic piece is abutted against the excavating shovel; and the cam is rotationally arranged in the digging shovel and is abutted against the digging shovel, and the cam and the elastic piece are positioned on two sides of the digging shovel.

Further, the elastic member is located below the shovel, and the cam is located above the shovel.

Further, the elastic member is located above the shovel, and the cam is located below the shovel.

Further, the rotary throwing device comprises rotary throwing components, wherein the rotary throwing components are arranged on two sides of the excavating disc, at least three blades are arranged on the rotary throwing components, and the blades are outwards turned.

Still further, the rotary throwing component is connected with the rotating device, and the rotating speeds of the excavating component and the excavating disk are different.

Further, the excavating disk is arranged obliquely.

Further, the digging disc comprises a rotary disc and a rotary tooth, the rotary tooth is arranged on the outer side of the rotary disc, and the outermost end of the rotary tooth is toothed.

Further, still include the alignment subassembly that sets up in frame rear end, the alignment subassembly includes: the clamping belt is obliquely arranged on the rack and is used for conveying the green Chinese onions; the staggered rolling and clamping mechanism is arranged on the rack and is positioned below the clamping belt to drive the root of the onion to move in the opposite direction; the shaking box is arranged on the rack, is positioned below the staggered rolling and clamping mechanism and is used for receiving the green Chinese onions falling from the clamping belt, and an opening is formed in one side of the shaking box; the clamping belt is arranged in the shaking box, one end of the clamping belt close to the connecting plate is lower than the opposite end of the connecting plate, and after the connecting plate swings, the green Chinese onions slide out of the opening side of the shaking box or approach the other side of the shaking box.

Still further, the staggered rolling and clamping mechanism comprises a pair of connecting rods, a rotating disc and a swinging plate, wherein the connecting rods are fixedly arranged on a rotating shaft of the clamping belt, the rotating disc is arranged below the connecting rods, and the swinging plate is uniformly distributed around the rotating disc.

Still further, the swing mechanism is a crank and rocker mechanism, and a rocker of the crank and rocker mechanism is connected with the connecting plate.

Still further, the opening side below of shake case is equipped with stacks the case, one side of stacking the case is equipped with the revolving door, the inside of stacking the case is equipped with the swash plate, the swash plate is located the one side that is close to the revolving door and is low.

Further, still include the bundling assembly of utilizing the area to bundle, the bundling assembly includes: the placing plate is arranged on the rack and provided with at least one pair of through holes; the guide rail is arranged above the placing plate and is used for communicating each pair of through holes on the placing plate; the friction wheel is arranged on the frame; the hot melting device is arranged on the rack and used for hot melting, sealing and cutting off the tape; and the belt conveying wheel is arranged on the rack and used for pushing a belt out of the other opposite through hole after the belt passes through the guide rail from one through hole of the placing plate and then onto the friction wheel through the hot melting device.

Still further, the bundling assembly further comprises a belt pressing plate, a spring push rod and a bundling cam, wherein the belt pressing plate is arranged on the rack, the bundling cam is rotationally arranged on the rack, the bundling cam abuts against the spring push rod, the spring push rod is slidably arranged on the rack, and the hot melting device is arranged at the bottom end of the belt pressing plate and is opposite to the spring push rod.

Furthermore, the guide rail is provided with two sections, one end of each section of guide rail is communicated with the through hole on the placing plate, and the other end of each section of guide rail is arranged oppositely.

Still further, the number of the guide rails is two.

Still further, the belt feeding wheel comprises a fixed rotating wheel A, a movable rotating wheel A and a connecting rod A, the fixed rotating wheel A is connected with the rotating motor, the movable rotating wheel A is rotatably arranged on the connecting rod A, and the connecting rod A is arranged on the rack through a straight notch.

Still further, the bundling assembly further comprises a bundling spring, one end of the bundling spring is connected with the spring push rod, and the other end of the bundling spring is arranged on the rack.

Still further, a conduit is arranged at the through hole of the placing plate.

Still further, the friction wheel includes fixed runner B, removes runner B and connecting rod B, fixed runner B is connected with the rotating electrical machines, it sets up on connecting rod B to remove runner B rotation, connecting rod B passes through the straight notch setting on the frame.

The utility model has the advantages that: the shallot digging and soil cleaning by shaking are realized, the shaking of the digging shovel is realized by the cam mechanism, the shallot digging with low resistance by shaking and the soil cleaning by shaking of the soil shaking roller can be ensured, and the digging efficiency and the digging quality of the shallot are greatly improved.

Drawings

FIG. 1 is a schematic structural diagram of an extruding, cutting, shaking and digging type green Chinese onion harvester of the present application;

FIG. 2 is a schematic structural view of the excavation assembly of the present application;

FIG. 3 is a schematic structural diagram of the spin-cast assembly of the present application;

FIG. 4 is a schematic view of the sliding chamber, shovel and cam of the present application;

FIG. 5 is a schematic cross-sectional view of FIG. 4;

FIG. 6 is a schematic structural view of the alignment assembly of the present application;

FIG. 7 is an enlarged partial schematic view of FIG. 6 at A;

FIG. 8 is a schematic view of the inner structure of the shaking box of the present application, wherein the fishplate bar is swung to the inside;

FIG. 9 is a schematic view of the internal structure of the present application of the shaker box, wherein the fishplate bar is swung to the outside;

FIG. 10 is a schematic structural view of a tying assembly of the present application;

FIG. 11 is a schematic view of the construction of the guide rail of the present application;

FIG. 12 is a schematic structural view of a friction wheel of the present application;

fig. 13 is a schematic structural view of the feed roller of the present application.

In the above-described figures, the first and second,

1. a frame;

2. a digging component; 21. excavating a disc; 22. a sliding cavity; 23. excavating a shovel; 24. an elastic member; 25. a cam;

3. a rotary polishing component; 31. a blade;

4. an alignment assembly; 41. clamping the belt; 42. a staggered roller clamp mechanism; 421. a connecting rod; 422. rotating the disc; 423. a swing plate; 43. a shaking box; 44. connecting a plate; 45. stacking boxes; 46. a revolving door; 47. a sloping plate;

5. a bundling assembly; 51. placing the plate; 52. a guide rail; 53. a friction wheel; 531. fixing a rotating wheel B; 532. moving the rotating wheel B; 533. a connecting rod B; 54. a hot melting device; 55. a feed roller; 551. fixing the rotating wheel A; 552. moving the rotating wheel A; 553. a connecting rod A; 56. a belt pressing plate; 57. a spring push rod; 59. a bundling spring.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given to the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments as follows:

an extruding, cutting and shaking digging type green Chinese onion harvester is shown in figures 1 to 13 and comprises a frame 1 and a digging component 2.

The digging component 2 realizes the shaking digging and the shaking conveying of the green Chinese onions, the cam mechanism realizes the shaking of the digging shovel, and the low-resistance digging and the shaking conveying soil cleaning and combing of the green Chinese onions can be guaranteed. The cutting and rotary digging device consists of a driven chisel type digging disc cutting mechanism and a rotary throwing mechanism, a pair of driven chisel type digging discs forming a certain angle is utilized to finish cutting of soil on two sides of the green Chinese onion, a special angle channel is utilized to realize extrusion and loosening of upturned soil, meanwhile, the soil and the green onion roots are cut, and winding of redundant soil and the green onion roots is avoided.

As shown in fig. 2, the excavating assembly 2 is provided at the front end of the frame 1, and the excavating assembly 2 includes an excavating disk 21, a slide chamber 22, an excavating blade 23, an elastic member 24, and a cam 25. An excavating disk 21 is rotatably mounted on the frame 1, the excavating disk 21 being powered by the forward movement of the harvester and cutting the soil on both sides of the green Chinese onion as the harvester moves forward during contact with the soil. Preferably, the digging disc 21 is obliquely arranged, so that upturned soil extrusion and loosening are realized, meanwhile, soil and the onion roots are cut, and the winding of redundant soil and the onion roots is avoided. Regarding the shape of the excavating disk 21, it includes a turntable and a rotary tooth provided on the outer side of the turntable, and the outermost end of the rotary tooth is provided in a tooth shape. The rotary teeth can increase the depth of being sunk into soil in the rotating process, and the action effect is further improved. In addition, as shown in fig. 3, the rotating throwing assemblies 3 are arranged on two sides of the digging disc 21, the rotating throwing assemblies 3 are provided with at least three blades 31, and the blades 31 are outwards turned to outwards turn out the dug soil. Throw subassembly 3 soon and be connected with rotary device, it is different with excavation disk 21 rotational speed to excavate subassembly 2, excavates subassembly 2 and excavation disk 21's speed difference, can realize the effective loose fragment and the flow of soil, and then improves and excavate and loosen the soil the effect.

As shown in fig. 4 and 5, a slide chamber 22 is provided on the frame 1 at the rear of the excavating disk 21, and an excavating blade 23 is slidably provided in the slide chamber 22. One end of the elastic member 24 abuts against the slide cavity 22 and the other end abuts against the shovel 23, the cam 25 is rotatably provided in the shovel 23, the cam 25 abuts against the shovel 23, and the cam 25 and the elastic member 24 are located on both sides of the shovel 23. In fig. 5, the elastic member 24 is located below the shovel 23, and the cam 25 is located above the shovel 23. Or the resilient member 24 is located above the digging shovel 23 and the cam 25 is located below the digging shovel 23, the two effects being substantially similar. When the cam 25 rotates, the digger blade 23 moves up and down by the elastic member 24, thereby achieving the effect of digging and shaking the soil.

The staggered rolling and clamping mechanism 42 is arranged behind the clamping belt 41, so that the scallion is changed into a flat state from a clamping and conveying position under the action of the staggered rolling and clamping mechanism 42 after being separated from the clamping belt 41. The green Chinese onions fall into the aligning component 4, the root of the green Chinese onions is aligned with the fistular onion stalk by utilizing the vibration of the inclined plate 47, and the green Chinese onions enter the stacking mechanism in sequence.

At the rear end of the frame 1, an alignment unit 4 is provided, and as shown in fig. 6 to 9, the alignment unit 4 includes a holding belt 41, an interleaving roller-clamping mechanism 42, a jogger box 43, and a joint plate 44. The clamping belts 41 are obliquely arranged on the rack 1, and the scallion leaf parts of the scallion are clamped by the clamping belts 41, so that the scallion is conveyed. The staggered rolling and clamping mechanism 42 is arranged on the machine frame 1, and the staggered rolling and clamping mechanism 42 is positioned below the clamping belt 41 and used for cutting the root of the green Chinese onion. The staggered rolling and clamping mechanism 42 cuts the green Chinese onions in the direction opposite to the conveying direction of the green Chinese onions, and the clamping belts 41 are obliquely arranged on the frame 1, so that the roots of the green Chinese onions face the head of the harvester, and the green Chinese onion leaves of the green Chinese onions face the tail of the harvester.

Specifically, the staggered rolling and clamping mechanism 42 includes a pair of connecting rods 421, a rotating disc 422 and swinging plates 423, the connecting rods 421 are fixedly disposed on the rotating shaft of the clamping belt 41, the rotating disc 422 is disposed below the connecting rods 421, and the swinging plates 423 are uniformly distributed around the rotating disc. The connecting rod 421 is directly fixed on the rotating shaft of the clamping belt 41, and the clamping belt 41 can incidentally drive the staggered rolling clamp mechanism 42 to work in the moving process, so that the use cost is reduced. The shaking box 43 is arranged on the frame 1, and the shaking box 43 is positioned below the staggered rolling and clamping mechanism 42 and used for receiving the green Chinese onions falling from the clamping belt 41.

An opening is formed in one side of the shaking box 43, and the contact plate 44 is disposed in the shaking box 43 through a swing mechanism. One end of the connecting plate 44 close to the clamping belt 41 is lower than the opposite end, and when the scallion falls to the connecting plate 44, the root of the scallion can be close to the head of the harvester, so that the root of the scallion is aligned. After the connecting plate 44 swings, the green Chinese onions slide out from the opening side of the shaking box 43 or approach to the other side of the shaking box 43, and the effect of shaking and aligning the root of the green Chinese onions is matched, so that the effect of shaking and aligning the root of the green Chinese onions is realized, and the effect of gathering the green Chinese onions is also realized. The above-mentioned swing structure can be a crank and rocker mechanism, and the rocker of the crank and rocker mechanism is connected with the connecting plate 44.

A stacking box 45 is arranged below the opening side of the shaking box 43, a rotating door 46 is arranged on one side of the stacking box 45, a sloping plate 47 is arranged inside the stacking box 45, and the sloping plate 47 is positioned at the lower part of one side close to the rotating door 46. The green Chinese onions are piled to one side of the revolving door 46, when the piled green Chinese onions reach the bundling requirement, the revolving door 46 is opened, the piled green Chinese onions fall into the bundling assembly 5 below, and intermittent bundling is carried out by the bundling assembly 5.

When the weight of the green Chinese onions in the stacking box 45 reaches the bundling requirement, the stacked green Chinese onions fall into the bundling mechanism 5 and are intermittently bundled by the stacking mechanism. The friction wheel is used for driving the bundling belt to perform bundling and fastening work, and the bundling cam 58 is used for cutting and fusing for linking, so that the bundling operation of the green Chinese onions is ensured.

As shown in fig. 10, the bundling assembly 5 is bundled by using a hard band, which may be a PP polypropylene manual bundling band. The bundling assembly 5 comprises a placing plate 51, a guide rail 52, a friction wheel 53, a hot melting device 54 and a belt feeding wheel 55. The placing plate 51 is arranged on the frame 1, the placing plate 51 is provided with at least one pair of through holes, the guide rail 52 is arranged above the placing plate 51 and used for communicating each pair of through holes on the placing plate 51, and an opening is arranged below the guide rail 52, namely the guide rail 52 is a concave rail. As shown in fig. 11, the guide rail 52 has two sections, and one end of each section of the guide rail 52 is communicated with the through hole of the placing plate 51, and the other end is oppositely arranged, so as to realize the introduction of the green Chinese onion. In fig. 1, two pairs of through holes and two guide rails 52 are shown. The friction wheel 53 is arranged on the frame 1, and the hot melting device 54 is arranged on the frame 1 and used for hot melting, sealing and breaking the belt. The belt feeding wheel 55 is provided on the frame 1, and the belt feeding wheel 55 is used for pushing out the belt from one through hole of the placing plate 51 through the guide rail 52 and then from the other opposite through hole, and then onto the friction wheel 53 through the heat fusing device 54. The tape moves forward from the feed roller 55 into the through hole of the placing plate 51, then continues forward, moves into the guide rail 52, moves directly to another through hole of the placing plate 51, then passes through the heat-melting device 54 and enters the friction roller 53. In order to facilitate the movement of the tape from the feed roller 55 to the through-hole of the placing plate 51 and from the through-hole of the placing plate 51 to the heat-fusing device 54 and even the friction roller 53, a guide tube is provided at the through-hole of the placing plate 51. When the binding assembly 5 is used, when the green Chinese onions move into the guide rail 52, the belt passes through the through holes of the guide rail 52 and the placing plate 51 to wrap the green Chinese onions, then the belt moves to the friction wheel 53, the belt feeding wheel 55 is controlled to rotate reversely, the friction wheel 53 stops or rotates forwards to tighten the belt, the binding of the belt is completed, and then the hot melting device 54 is used for cutting and fusing the chain of the belt, so that the binding operation of the green Chinese onions is completed.

The bundling assembly 5 further comprises a pressing belt plate 56, a spring push rod 57 and a bundling cam 58, wherein the pressing belt plate 56 is arranged on the frame 1, the bundling cam 58 is rotatably arranged on the frame 1, the bundling cam 58 abuts against the spring push rod 57, the spring push rod 57 is slidably arranged on the frame 1, and the hot melting device 54 is arranged at the bottom end of the pressing belt plate 56 and is opposite to the spring push rod 57. One end of the bundling spring 59 is connected with the spring push rod 57, and the other end is arranged on the frame 1. The bundling cam 58 is controlled to rotate, the spring push rod 57 moves upwards, the far rest point of the bundling cam 58 is abutted against the spring push rod 57, the hot melting device 54 works, then the bundling cam 58 continues to move, and under the action of the bundling spring 59, the hot melting device 54 moves downwards, and then the belt is moved.

As shown in fig. 12, the friction wheel 53 includes a fixed wheel B531, a moving wheel B532 and a connecting rod B533, the fixed wheel B531 is connected to the rotary motor, the moving wheel B532 is rotatably disposed on the connecting rod B533, and the connecting rod B533 is disposed on the frame 1 through a straight notch. By adjusting the positions of the link B533 and the chassis 1, the position of the moving reel B532 on the fixed reel B531 can be adjusted, thereby adjusting the leading-out direction of the belt.

Similarly, as shown in fig. 13, the belt feeding wheel 55 includes a fixed wheel a551, a moving wheel a552 and a link a553, the fixed wheel a551 is connected to the rotating motor, the moving wheel a552 is rotatably disposed on the link a553, and the link a553 is disposed on the frame 1 through a straight notch. This is achieved by adjusting the direction of introduction of the tape.

The invention has been described above with reference to a preferred embodiment, but the scope of protection of the invention is not limited thereto, and various modifications can be made and equivalents can be substituted for elements thereof without departing from the scope of the invention, and features mentioned in the various embodiments can be combined in any way as long as there is no structural conflict, and any reference sign in the claims should not be construed as limiting the claim concerned, and the embodiments should be regarded as being exemplary and non-limiting in any way whatsoever. Therefore, all technical solutions that fall within the scope of the claims are within the scope of the present invention.

Claims

1. The utility model provides an crowded formula green Chinese onion harvester that cuts trembles and digs, includes frame (1), its characterized in that still including set up in excavation component (2) of frame (1) front end, excavation component (2) include:

an excavating disk (21), the excavating disk (21) being rotatably arranged on the frame (1);

a sliding cavity (22), wherein the sliding cavity (22) is arranged on the frame (1) and is positioned behind the excavating disk (21);

the digging shovel (23) is arranged in the sliding cavity (22) in a sliding mode;

one end of the elastic piece (24) is abutted against the sliding cavity (22), and the other end of the elastic piece (24) is abutted against the digging shovel (23); and

the cam (25) is rotationally arranged in the digging shovel (23), the cam (25) is abutted against the digging shovel (23), and the cam (25) and the elastic piece (24) are positioned on two sides of the digging shovel (23).

2. A squeezing cutting trembling green Chinese onion harvester according to claim 1, characterized in that the elastic member (24) is located below the digger blade (23) and the cam (25) is located above the digger blade (23).

3. A squeezing cutting trembling green Chinese onion harvester according to claim 1, characterized in that the elastic member (24) is located above the digger blade (23) and the cam (25) is located below the digger blade (23).

4. The squeezing-cutting and trembling-type green Chinese onion harvester according to claim 1, characterized by further comprising a rotating-throwing assembly (3), wherein the rotating-throwing assembly (3) is arranged on two sides of the digging disc (21), the rotating-throwing assembly (3) is provided with at least three blades (31), and the blades (31) are outwards turned.

5. A squeezing cutting and trembling type green Chinese onion harvester according to claim 4, characterized in that the rotary throwing component (3) is connected with a rotating device, and the rotating speed of the digging component (2) and the digging disk (21) is different.

6. A squeezing cutting trembling green Chinese onion harvester according to claim 1, characterized in that the digging disk (21) is arranged obliquely.

7. The squeezing-cutting and trembling-type green Chinese onion harvester as claimed in claim 1, wherein said digging disk (21) comprises a rotating disk and a rotating tooth, said rotating tooth is disposed on the outer side of the rotating disk, and the outermost end of said rotating tooth is disposed in a tooth shape.

8. An extruding, cutting, trembling and digging type green Chinese onion harvester according to claim 1, further comprising an alignment assembly (4) arranged at the rear end of said frame (1), said alignment assembly (4) comprising:

the clamping belt (41), the clamping belt (41) is obliquely arranged on the rack (1), and the clamping belt (41) is used for conveying the green Chinese onions;

the staggered rolling and clamping mechanism (42) is arranged on the rack (1), and the staggered rolling and clamping mechanism (42) is positioned below the clamping belt (41) and drives the root of the onion to move in the opposite direction;

the staggered rolling and clamping mechanism 42 is positioned below the clamping belt 41, the shaking box (43) is arranged on the rack (1), the shaking box (43) is positioned below the staggered rolling and clamping mechanism (42) and is used for receiving green Chinese onions falling from the clamping belt (41), and an opening is formed in one side of the shaking box (43); and

the connecting plate (44) is arranged in the shaking box (43) through a swinging mechanism, one end, close to the clamping belt (41), of the connecting plate (44) is lower than the opposite end, and after the connecting plate (44) swings, the green Chinese onions slide out from the opening side of the shaking box (43) or approach to the other side of the shaking box (43).

9. The squeezing, cutting, shaking and digging type green Chinese onion harvester according to claim 8, wherein the staggered rolling and clamping mechanism (42) comprises a pair of connecting rods (421), a rotating disc (422) and a swinging plate (423), the connecting rods (421) are fixedly arranged on a rotating shaft of the clamping belt (41), the rotating disc (422) is arranged below the connecting rods (421), and the swinging plate (423) is uniformly distributed on the periphery of the rotating disc.

10. The extrusion cutting tremble digging type green Chinese onion harvester according to claim 1, further comprising a bundling assembly (5) for bundling with a belt, said bundling assembly (5) comprising:

a placement plate (51), the placement plate (51) being provided on the frame (1), the placement plate (51) being provided with at least one pair of through holes;

a guide rail (52), wherein the guide rail (52) is arranged above the placing plate (51) and is used for communicating each pair of through holes on the placing plate (51);

a friction wheel (53), the friction wheel (53) being arranged on the frame (1);

the hot melting device (54) is arranged on the rack (1) and used for hot melting, sealing and cutting off the belt; and the belt conveying wheel (55) is arranged on the frame (1), and the belt conveying wheel (55) is used for pushing a belt out from one through hole of the placing plate (51) through the guide rail (52) and then from the other opposite through hole, and then the belt is arranged on the friction wheel (53) through the hot melting device (54).