CN107439066B

CN107439066B - Film lifting assembly and residual film recycling machine

Info

Publication number: CN107439066B
Application number: CN201710251331.6A
Authority: CN
Inventors: 张霞; 邱静; 张鑫; 陈仁祥
Original assignee: Chongqing Jiaotong University
Current assignee: Chongqing Jiaotong University
Priority date: 2017-04-18
Filing date: 2017-04-18
Publication date: 2023-02-17
Anticipated expiration: 2037-04-18
Also published as: CN107439066A

Abstract

The invention provides a film lifting assembly and a residual film recycling machine, and belongs to the technical field of film recycling. The film raising component comprises a fixed support, a rotary support and at least one film raising needle component, the fixed support is connected with the rotary support in a rotating mode, each film raising needle component comprises a film raising needle and a film raising needle fixing ring fixed on the rotary support, the film raising needle comprises a first end portion and a second end portion which are opposite, the first end portion is provided with a first film sticking portion, the film raising needle fixing ring comprises a first film raising needle fixing ring and a second film raising needle fixing ring, the axis of the first film raising needle fixing ring is parallel to the axis of the second film raising needle fixing ring, and the film raising needle is slidably sleeved in the first film raising needle fixing ring and the second film raising needle fixing ring. The residual film recycling machine comprises the film lifting assembly. The film-drawing device has the advantages of high film-drawing efficiency, simple structure, small size, portability, small power requirement and low production cost, and can be widely applied to small and dispersive agricultural production modes.

Description

Film lifting assembly and residual film recycling machine

Technical Field

The invention relates to the technical field of film recovery, in particular to a film lifting assembly and a residual film recovery machine.

Background

The yield increasing benefit of the mulching film mulching technology is obvious, but the mulching film cultivation known as 'white revolution' brings 'white harm' at the same time. The residual film remained in the field can destroy the soil structure of the field, form a barrier belt or a barrier layer, influence the development of crop roots, and obstruct the absorption of crops on moisture and nutrients, thereby reducing the yield of the crops. The residual film remained in the field can influence the field operation of the machine, for example, in the process of ploughing and soil preparation operation, the rotary soil preparation working part is often wound by the residual film, so that the machine is forced to stop and clear, and the ploughing and soil preparation operation efficiency is reduced. The residual film recycling machine replaces manpower to carry out field residual film recycling operation, and greatly reduces the operation intensity of farmers.

The film lifting component of the residual film recycling machine in the prior art is mainly in 5 forms of shovel type, elastic tooth type, tooth chain type, telescopic rod tooth type and wheel tooth type, and due to the complex and heavy structure of the film lifting component, combined operations such as film lifting, conveying and collecting need to be carried out by the driving of power machinery such as a small four-wheel tractor and the like. However, in the vast rural areas of China, the scale of small-sized and distributed agricultural production is mainly adopted, the economic bearing capacity of the vast farmers is limited, and each household does not buy a small four-wheel tractor, so that a novel film-forming component with small and portable structure, low power cost and low manufacturing cost is urgently needed.

Disclosure of Invention

The invention aims to provide a film lifting assembly which has the advantages of simple structure, low power cost, convenience in film removal, small size, portability and the like, and can be widely applied to small and decentralized agricultural production modes.

The invention also aims to provide a residual film recycling machine which is simple in structure, small, exquisite and portable, low in power cost and suitable for the agricultural production mode mainly based on small and dispersive type in vast rural areas in China.

The embodiment of the invention is realized by the following steps:

the utility model provides a film raising subassembly, including the fixed bolster, runing rest and at least one film raising needle subassembly, the fixed bolster rotates with the runing rest to be connected, every film raising needle subassembly includes the film raising needle and is fixed in the film raising needle retainer plate of runing rest, the film raising needle includes relative first end and second end, the first end is provided with first thorn membrane portion, the film raising needle retainer plate includes first film raising needle retainer plate and second film raising needle retainer plate, the axis of first film raising needle retainer plate is parallel with the axis of second film raising needle retainer plate, the film raising needle slidable ground cover is located in first film raising needle retainer plate and the second film raising needle retainer plate.

Further, in a preferred embodiment of the present invention, the rotating bracket includes an annular side wall, the annular side wall and the fixed bracket enclose a receiving cavity, the lift pin assembly is disposed in the receiving cavity, the first lift pin fixing ring is connected to the annular side wall, and the annular side wall is opened with a first pin hole communicated with the first lift pin fixing ring.

Further, in a preferred embodiment of the present invention, the rotating bracket further includes a mounting bracket connected to the annular side wall, the fixing bracket is provided with a mounting hole, and the mounting bracket is provided with a rotating shaft matching with the mounting hole and a driving device for driving the rotating shaft to rotate.

Further, in a preferred embodiment of the present invention, the fixing bracket is provided with a cam, and the film raising needle assembly further comprises a first cam roller connected with the film raising needle, wherein the first cam roller is matched with the cam to make the first film pricking part slide along the axial direction of the first film raising needle fixing ring.

Further, in a preferred embodiment of the present invention, the needle raising assembly further includes a first elastic member for sliding the needle raising towards a side of the first end portion close to the second end portion, and two ends of the first elastic member are respectively connected to the needle raising and the rotating bracket.

Further, in a preferred embodiment of the present invention, an end of the first elastic member away from the rotating bracket is connected to the first cam roller, and an end of the first elastic member away from the film lifting pin is disposed on a side of the first cam roller away from the first film lifting pin fixing ring.

Further, in a preferred embodiment of the invention, the film raising needle assembly further comprises a second cam roller connected with the film raising needle, a gap is formed between the second cam roller and the first cam roller, and the second cam roller is matched with the cam to enable the first film raising part to slide along the axial direction of the first film raising needle fixing ring.

Further, in a preferred embodiment of the present invention, the second film raising needle fixing ring is connected to the annular side wall, and the annular side wall is provided with a second needle hole communicated with the second film raising needle fixing ring.

Further, in a preferred embodiment of the present invention, the film removing needle assembly further includes a second elastic member for sliding the film removing needle toward a side of the second end portion close to the first end portion, and both ends of the second elastic member are respectively connected to the film removing needle and the rotary bracket.

A plastic film residue collector comprises the film lifting assembly.

The embodiment of the invention has the beneficial effects that:

according to the film lifting assembly provided by the invention, the fixed support is used for driving the film lifting assembly to move in the field under the driving of power. Because the rotating bracket is rotationally connected with the fixed bracket, the film lifting needle assembly arranged on the rotating bracket rotates along with the rotating bracket relative to the fixed bracket. When the film removing field operation is carried out, the first film removing part of the film removing needle is in contact with soil and removes the residual film, the first film removing part is used for tearing up and lifting the residual film under the driving of the rotary support and the fixed support, and the power requirement is low. Play membrane needle and play membrane needle retainer plate sliding connection, when first thorn membrane portion pick up the incomplete membrane after play membrane needle slidable under the guide effect of two play membrane needle retainer plates to first thorn membrane portion be located first membrane needle retainer plate together, incomplete membrane this moment drops from first thorn membrane portion, is convenient for continue to play the membrane operation, removes that the membrane is automatic good, efficient.

The residual film recycling machine provided by the invention adopts the film removing assembly to perform film removing operation, has the advantages of simple structure, small size, portability, high film removing efficiency, low film removing power requirement and low production cost, and is suitable for small and dispersive field film removing effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a residual film recycling machine provided in an embodiment of the present invention at a first viewing angle;

FIG. 2 is a schematic structural diagram of a residual film recycling machine at a second viewing angle according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a fixing bracket at a first viewing angle according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the fixing bracket at a second viewing angle according to the embodiment of the present invention;

FIG. 5 is a schematic view of a rotating gantry according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a needle assembly for removing a film provided by an embodiment of the present invention;

fig. 7 is a partially enlarged view of fig. 6 at viii.

Icon: 100-a residual film recycling machine; 110-driving the moving means; 111-mounting shaft; 112-a first roller; 113-a second roller; 120-a membrane-lifting assembly; 130-a fixed support; 131-a connector; 1311-a first connector; 1312-a first via; 1313-second connection; 1314-second via holes; 132-a frame body; 133-diaphragm removing; 1331-first stripping film; 1332-second stripping film; 134-a cam; 1341-a first end face; 1342-a second end face; 1343-a third end face; 1344-a fourth end face; 135-mounting holes; 140-rotating the holder; 141-a mounting frame; 1411-a rotating shaft; 142-an annular sidewall; 1421-first pinhole; 1422 — second pinhole; 150-a peeling needle assembly; 151-a film forming needle; 152-a first end portion; 1521 first membrane pricking part; 1522-a first card slot; 153-a second end; 1531-second membrane piercing part; 1532 — a second card slot; 1541-first adventitial needle fixing ring; 1542-second film-removing needle fixing ring; 155-a first cam roller; 1551-first connection; 1552-first connection hole; 1553-first bump; 1554-first driving part; 156-a second cam roller; 1561-a second connection part; 1562-second driving part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention 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 figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "first", "second", "third", "fourth", and the like are used for distinguishing the description, and are not to be construed as indicating or implying relative importance.

The terms "upper", "lower", "inner", "outer", and the like, refer to an orientation or positional relationship based on that shown in the drawings, or that is conventionally placed when the product of the invention is used, and are used only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "perpendicular", "parallel", and the like do not require absolute perpendicularity between the components, but may be slightly inclined. Such as "vertical" merely means that the direction is relatively more vertical and does not mean that the structure must be perfectly vertical, but may be slightly inclined.

In the description of the present invention, it is also to be noted that the terms "disposed," "mounted," "connected," and the like are to be construed broadly unless otherwise specifically stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and fig. 2, the present embodiment provides a residual film recycling machine 100, which includes a driving moving device 110 and a film lifting assembly 120 connected to the driving moving device 110.

Specifically, the driving movement device 110 includes a mounting shaft 111, and a first roller 112 and a second roller 113 provided on the mounting shaft 111. The first roller 112 and the second roller 113 are respectively rotatably disposed at two ends of the mounting shaft 111 for driving the moving device 110 to drive the film lifting assembly 120 to move.

The stripping assembly 120 includes a fixed bracket 130, a rotating bracket 140, and three stripping needle assemblies 150 arranged side by side.

Referring to fig. 3, the fixing bracket 130 includes a bracket body 132 and a connecting member 131 fixedly connected to the bracket body 132, the connecting member 131 includes a first connecting member 1311 and a second connecting member 1313 coaxially disposed, the first connecting member 1311 and the second connecting member 1313 are respectively provided with a first through hole 1312 and a second through hole 1314, and the mounting shaft 111 passes through the first through hole 1312 and the second through hole 1314 to be connected to the connecting member 131, so as to achieve the connection between the driving mobile device 110 and the fixing bracket 130.

The connection member 131 may be connected to the mounting shaft 111 by providing internal threads in the first and second through

holes

1312 and 1314, and providing external threads on the mounting shaft 111 that mate with the internal threads to allow the two to be connected by threads, or by other means, such as snap-fitting.

Referring to fig. 3 and 4, a cam 134 is disposed on a side of the frame 132 away from the connecting member 131. In this embodiment, the cam 134 includes a first end 1341, a second end 1342, a third end 1343 and a fourth end 1344 connected in sequence.

The second end face 1342 is a substantially planar surface, and the second end face 1342 is substantially parallel to the axis of the mounting shaft 111 and is located on a side of the fourth end face 1344 away from the mounting shaft 111. First terminal surface 1341 and third terminal surface 1343 are provided symmetrically, and first terminal surface 1341 is an arc-shaped surface and protrudes toward one side far away from third terminal surface 1343, so third terminal surface 1343 also protrudes toward one side far away from first terminal surface 1341 for the arc-shaped surface simultaneously.

Referring to fig. 5, in the present embodiment, the rotating bracket 140 includes a circular sidewall 142 and a mounting frame 141 connected to the circular sidewall 142.

Referring to fig. 3 and fig. 5, the mounting bracket 141 is provided with a rotating shaft 1411 and a driving device (not shown) for driving the rotating shaft 1411 to rotate. The frame body 132 of the fixing bracket 130 is provided with a mounting hole 135 matched with the rotating shaft 1411, and the fixing bracket 130 is sleeved on the rotating shaft 1411 through the mounting hole 135, so that the rotating bracket 140 is rotatably connected with the fixing bracket 130. The power requirement for relative rotation of the fixed bracket 130 and the rotating bracket 140 is low, and the driving device can be powered by a power device such as a dynamic motor.

The annular side wall 142 and the frame body 132 of the fixing bracket 130 enclose a receiving cavity for receiving the film removing needle assembly 150, and the cam 134 is arranged in the receiving cavity to be matched with the film removing needle assembly 150.

Referring to fig. 6, each lift pin assembly 150 includes a lift pin 151, a cam roller, and a lift pin retainer ring.

The film raising needle assembly 150 is used for performing film puncturing and raising operations, and when the number of the sets of the film raising needles 151 is small, the residual film recycling machine 100 is small and exquisite and has good flexibility, but the film raising effect is relatively poor. When the number of the film raising needles 151 is too large, the film raising effect is good, but the corresponding residual film recycling machine 100 is heavy and is not easy to operate. Therefore, the three sets of the film-forming needle assemblies 150 are arranged side by side in the embodiment, so that the good film-forming effect and the flexibility of operation are guaranteed.

The lift pin 151 includes opposite first and

second end portions

152 and 153, the first end portion 152 is provided with a first membrane portion 1521, and the second end portion 153 is provided with a second membrane portion 1531. The first and second

puncturing film portions

1521 and 1531 are used to puncture and lift the remnant film when the remnant film is recovered.

The lift pin retainer ring includes a first lift pin retainer ring 1541 and a second lift pin retainer ring 1542, and an axis of the first lift pin retainer ring 1541 and an axis of the second lift pin retainer ring 1542 are substantially parallel. The first film needle fixing ring 1541 is connected to the annular sidewall 142, and the annular sidewall 142 defines a first needle hole 1421 communicating with the first film needle fixing ring 1541. The second lift pin ring 1542 is connected to the annular sidewall 142, and the annular sidewall 142 defines a second pin hole 1422 communicating with the second lift pin ring 1542. The first end 152 of the film forming needle 151 is slidably sleeved in the first film forming needle fixing ring 1541, and the second end 153 of the film forming needle 151 is slidably sleeved in the second film forming needle fixing ring 1542.

The cam rollers include a first cam roller 155 and a second cam roller 156. The first cam roller 155 is connected to the first end portion 152, the second cam roller 156 is connected to the second end portion 153, and a gap through which the cam 134 passes is provided between the first cam roller 155 and the second cam roller 156.

The first cam roller 155 includes a first coupling part 1551 and a first driving part 1554, and the first coupling part 1551 is coupled between the first end part 152 and the first driving part 1554. The second cam roller 156 includes a second connection part 1561 and a second driving part 1562, and the second connection part 1561 is connected between the second end part 153 and the second driving part 1562.

The first cam roller 155 and the second cam roller 156 cooperate with the cam 134 to slide the first puncturing film portion 1521 along the first film lifting pin fixing ring 1541, and slide the second puncturing film portion 1531 along the second film lifting pin fixing ring 1542.

Specifically, when the plastic film residue recycling machine 100 of the present embodiment is used to perform a film recycling operation, the fixing bracket 130 is tilted to a position where the height of the second end face 1342 of the cam 134 is lower than the height of the fourth end face 1344, and the rotating bracket 140 is driven by the driving device to rotate relative to the fixing bracket 130. When the lift pins 151 are substantially parallel to the mounting shaft 111, neither the first cam roller 155 nor the second cam roller 156 is in contact with the cam 134. The rotating bracket 140 continues to rotate to enable the first driving portion 1554 of the first cam roller 155 to contact with the first end face 1341 of the cam 134, the first driving portion 1554 abuts against the first end face 1341 to move to drive the first film sticking portion 1521 to slide along the first film sticking needle fixing ring 1541 and move towards one side of the first end portion 152 far away from the second end portion 153, and at this time, the first film sticking portion 1521 protrudes towards one side of the first needle hole 1421 far away from the accommodating cavity and sticks into soil. The depth of the film raising needle 151 penetrating into the soil can be adjusted as desired by adjusting the inclination degree of the fixing bracket 130. The rotating frame 140 continues to rotate to make the film raising needle 151 substantially perpendicular to the mounting shaft 111, and the second film raising portion 1531 is just inside the second film raising needle fixing ring 1542, and the rotating frame 140 continues to rotate to raise the residual film by the first film raising portion 1521. When the second driving part 1562 is rotated to contact with the first end surface 1341, the second membrane puncturing part 1531 moves towards the side of the second end part 153 away from the first end part 152 to puncture the soil and repeat the same membrane lifting operation as the first membrane puncturing part 1521, at this time, the first membrane puncturing part 1521 gradually retracts until the membrane lifting needle 151 is approximately perpendicular to the mounting shaft 111 again, the first membrane puncturing part 1521 retracts into the first membrane lifting needle fixing ring 1541, the residual membrane suspended on the first membrane puncturing part 1521 falls off, the first membrane puncturing part 1521 can continue the membrane lifting operation with the rotating bracket 140, and the second membrane puncturing part 1531 and the first membrane puncturing part 1521 work on the same principle.

The film removing needle assembly 150 is arranged in the accommodating cavity, so that the film removing operation is prevented from being influenced by the fact that residual films are wound on the film removing needle assembly 150 during the film removing operation.

Referring to fig. 7, in the embodiment, the first connection portion 1551 is provided with a first connection hole 1552, a plurality of first protrusions 1553 are uniformly arranged in the first connection hole 1552, and the first end portion 152 is provided with a plurality of first slots 1522 matched with the first protrusions 1553, so that the first end portion 152 and the first connection portion 1551 are prevented from rotating relatively when the lift pin 151 slides. Similarly, the second connecting portion 1561 has a second connecting hole (not shown), a plurality of second protrusions (not shown) are uniformly disposed in the second connecting hole, and a plurality of second engaging grooves 1532 engaged with the second protrusions are disposed on the second end 153, so as to prevent the second end 153 and the second connecting portion 1561 from rotating relatively when the pop-up needle 151 slides. Of course, the number of the first protrusions 1553 and the second protrusions may be one, or a plurality of the first protrusions 1553 and the second protrusions are non-uniformly distributed, which can also achieve the effect of preventing relative rotation.

Further, in this embodiment, the needle-pulling assembly 150 further includes a first elastic member (not shown) and a second elastic member (not shown).

The first elastic member is configured to urge the film raising needle 151 to slide toward a side of the first end portion 152 close to the second end portion 153 when the first film raising portion 1521 completes the film raising operation, that is, after the first driving portion 1554 passes through the second end face 1342, the first driving portion 1554 is driven to move along the third end face 1343 and drive the first film raising portion 1521 to gradually retract. In this embodiment, one end of the first elastic member is connected to the first connection portion 1551, and the other end of the first elastic member is connected to the mounting frame 141 and located at a side of the first connection portion 1551 away from the first film sticking needle fixing ring 1541, at this time, the first elastic member preferably uses a compression spring, which is convenient to install and facilitates retraction of the first film sticking portion 1521.

Similarly, the second elastic member is provided to urge the film raising needle 151 to slide toward the side of the second end portion 153 close to the first end portion 152 when the second film raising portion 1531 completes the film raising operation, i.e., to drive the second driving portion 1562 to move along the third end surface 1343 and drive the second film raising portion 1531 to gradually retract after the second driving portion 1562 passes the second end surface 1342. In this embodiment, one end of the second elastic member is connected to the second connecting portion 1561, and the other end of the second elastic member is connected to the mounting frame 141 and located on the side of the second connecting portion 1561 away from the second film raising needle fixing ring 1542, and at this time, the second elastic member also preferably uses a compression spring, which is convenient to install and facilitates the retraction of the second film raising portion 1531.

In other embodiments of the present invention, the side of the first elastic member away from the lift pins 151 may be disposed on the side of the first connection portion 1551 close to the first lift pin fixing ring 1541, and similarly, the side of the second elastic member away from the lift pins 151 may be disposed on the side of the second connection portion 1561 close to the second lift pin fixing ring 1542.

In this embodiment, the first elastic member and the second elastic member are disposed substantially symmetrically, and when the axis of the film removing needle 151 is disposed substantially parallel to the mounting shaft 111, the protruding lengths of the first film removing portion 1521 and the second film removing portion 1531 relative to the accommodating cavity are substantially the same, so as to ensure the stability of the film removing operation of the first film removing portion 1521 and the second film removing portion 1531. Of course, in other embodiments of the present invention, the first elastic member and the second elastic member may be disposed asymmetrically.

Since the elastic member is in an extended state with a tendency to contract when the first and

second driving portions

1554 and 1562 are in contact engagement with the cam 134, the second end face 1342 is provided in a substantially planar configuration for abutting against the first and

second driving portions

1554 and 1562, which makes the film-lifting operation more stable. The first end 1341 and the second end 1342 are curved to facilitate the gradual extension or contraction of the lift pins 151.

With continued reference to fig. 3 and fig. 4, in the present embodiment, a film removing sheet 133 is disposed on a side of the frame 132 away from the second end 1342. The film removing sheet 133 includes a first film removing sheet 1331 and a second film removing sheet 1332, the first film removing sheet 1331 is connected to the frame body 132, and the second film removing sheet 1332 abuts against the outer side wall of the annular side wall 142 and is matched with the first needle hole 1421 and the second needle hole 1422 in the rotating process of the rotating bracket 140.

Because the thickness of the residual film is usually smaller, and there are gaps between the first needle hole 1421 and the first membrane sticking portion 1521, and between the second needle hole 1422 and the second membrane sticking portion 1531, the arrangement of the membrane withdrawing sheet 133 is convenient for blocking the residual film when the first membrane sticking portion 1521 retracts into the first membrane sticking needle fixing ring 1541 and the second membrane sticking portion 1531 retracts into the second membrane sticking needle fixing ring 1542, and preventing the residual film from blocking the gap to influence the subsequent membrane sticking operation.

In addition, in this embodiment, the frame 132 is further provided with a residual film recycling bag (not shown) engaged with the film removing sheet 133 for collecting the residual films dropped from the first puncturing part 1521 and the second puncturing part 1531 to the fourth end face 1344 far from the second end face 1342.

In other embodiments of the present invention, the first puncturing part 1521 may be disposed only at the first end portion 152, and in this case, the second film raising needle fixing ring 1542 may be disposed on the mounting frame 141 so as to be communicated with the accommodating cavity, so that the film raising operation can be performed only at the first end portion 152. When the arrangement mode is adopted, when the first driving part 1554 sequentially passes through the first end face 1341, the second end face 1342 and the third end face 1343, the first puncturing part 1521 realizes film lifting operation. When the rotating bracket 140 continues to rotate until the second driving portion 1562 sequentially passes through the first end face 1341 and the second end face 1342, the first puncturing part 1521 contracts towards one side close to the accommodating cavity along the axial direction of the first puncturing needle fixing ring 1541 until the first puncturing part 1521 retracts into the first puncturing needle fixing ring 1541 to realize demoulding. The first puncturing part 1521 repeats the above film removing and releasing operations with the rotation of the rotating bracket 140.

In addition, in the above-mentioned arrangement mode of only using the first end portion 152 to perform film raising and film removing, a first elastic member may be provided, and the arrangement mode of the first elastic member is the same as that in the present embodiment, and the first elastic member cooperates with the second cam roller 156 to urge the first film sticking portion 1521 to retract. In this arrangement, the first elastic member and the second cam roller 156 are provided to facilitate the retraction of the first puncturing part 1521, and therefore only the first elastic member may be provided. In other embodiments, the mechanism for retracting the first puncturing film portion 1521, such as the first elastic member or the second cam roller 156, is not limited to be disposed inside the accommodating cavity, and a conventional mechanism for retracting the first puncturing film portion 1521, such as a striking block engaged with the first needle hole 1421, may be disposed outside the accommodating cavity.

The stretching of the film raising needle 151 is not limited to the driving manner of the cam 134 cooperating with the first cam roller 155 and the second cam roller 156, such as the conventional arrangement manner of driving the film raising needle 151 to reciprocate, such as an electric screw rod or an electric telescopic rod, etc.

In summary, in the film removing assembly 120 provided by the present invention, the film removing needle 151 stretches and retracts along the axial direction of the fixing ring under the driving of the power to perform the film removing and releasing operation, and the film removing efficiency is high. The residual film recycling machine 100 for film removing operation by using the film removing assembly 120 has the advantages of simple structure, small size, portability, small power requirement and low production cost, and can be widely applied to small and dispersive agricultural production modes.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The film removing assembly is characterized by comprising a fixed bracket, a rotating bracket and at least one film removing needle assembly;

the fixed support comprises a support body and a connecting piece fixedly connected with the support body, the connecting piece comprises a first connecting piece and a second connecting piece which are coaxially arranged, a cam is arranged on one side of the support body, which is far away from the connecting piece, and the cam comprises a first end face, a second end face, a third end face and a fourth end face which are sequentially connected;

the rotary support comprises an annular side wall and an installation frame connected with the annular side wall, the installation frame is provided with a rotating shaft and a driving device for driving the rotating shaft to rotate, an installation hole matched with the rotating shaft is formed in the frame body of the fixed support, and the fixed support is sleeved at the rotating shaft through the installation hole, so that the rotary support is rotatably connected with the fixed support;

each film raising needle assembly comprises a film raising needle and a film raising needle fixing ring fixed on the rotary support, the film raising needle comprises a first end and a second end which are opposite, the first end is provided with a first film puncturing part, the film raising needle fixing ring comprises a first film raising needle fixing ring and a second film raising needle fixing ring, the axis of the first film raising needle fixing ring is parallel to the axis of the second film raising needle fixing ring, and the film raising needle is slidably sleeved in the first film raising needle fixing ring and the second film raising needle fixing ring.

2. The film removing assembly according to claim 1, wherein the annular side wall and the fixing bracket define a receiving cavity, the film removing needle assembly is disposed in the receiving cavity, the first film removing needle fixing ring is connected to the annular side wall, and the annular side wall is opened with a first needle hole communicated with the first film removing needle fixing ring.

3. The film raising assembly as claimed in claim 1, wherein the film raising needle assembly further comprises a first cam roller connected with the film raising needle, and the first cam roller is matched with the cam to make the first puncture part slide along the axial direction of the first film raising needle fixing ring.

4. The film raising assembly according to claim 3, further comprising a first elastic member for sliding the film raising needle toward the second end, wherein two ends of the first elastic member are respectively connected with the film raising needle and the rotary bracket.

5. The film raising assembly according to claim 4, wherein an end of the first elastic member away from the rotating bracket is connected with the first cam roller, and an end of the first elastic member away from the film raising needle is arranged on a side of the first cam roller away from the first film raising needle fixing ring.

6. The film raising assembly according to claim 3, wherein the film raising needle assembly further comprises a second cam roller connected with the film raising needle, a gap is formed between the second cam roller and the first cam roller, and the second cam roller is matched with the cam.

7. The film raising assembly according to claim 6, wherein the second film raising needle fixing ring is connected to the annular side wall, and the annular side wall is provided with a second needle hole communicated with the second film raising needle fixing ring.

8. The film raising assembly according to claim 7, further comprising a second elastic member for sliding the film raising needle toward the first end, wherein two ends of the second elastic member are respectively connected to the film raising needle and the rotary bracket.

9. A residual film recycling machine, characterized by comprising the film drawing assembly of any one of claims 1 to 8.