A film-forming device for recycling residual film and its cross-type film-picking mechanism

Abstract

The application provides a film starting equipment for recycling residual film and a cross type film picking mechanism thereof, and belongs to the field of film starting equipment parts. The cross type film picking mechanism of the film starting equipment comprises a spring tooth fixing shaft, a cross type spring tooth, a bolt, a nut and a gasket. The cross type spring tooth comprises a torsion spring structure, a ring part, a connecting rod part and a film picking rod part, and is fixed on the spring tooth fixing shaft through the bolt, the nut and the gasket. The torsion degree of the torsion spring structure corresponding to the inner side connecting rod part of the cross type spring tooth is slightly larger than the torsion degree of the torsion spring structure corresponding to the outer side connecting rod part, so that the connecting rod parts are just in contact to form a cross structure. In the working process, the middle film picking rod part of the cross type spring tooth can share the pressure borne by the film picking rod parts on both sides through the cross structure, so as to reduce the end deformation. The cross type spring tooth has high strength, small end deformation and long service life, and can reduce the damage degree of residual film in the recycling process.

Description

Technical Field

[0001] This invention relates to the field of film-forming equipment components, specifically to a film-forming equipment for recycling residual film and its cross-type film-picking mechanism. Background Technology

[0002] Mulching cultivation is a commonly used technique to increase crop yields. However, the polyethylene mulch film commonly used in farmland is difficult to degrade, and a large portion remains in the fields after harvest, severely impacting subsequent planting and cultivation operations, and causing significant pollution to farmland. Therefore, effective recycling of residual mulch film in farmland is urgently needed.

[0003] Currently, residual film recycling mainly involves two methods: manual recycling and mechanical recycling. Manual recycling is inefficient, labor-intensive, and costly, and is not suitable for large-scale operations. Mechanical recycling can effectively improve operational efficiency and reduce labor intensity, making it an important approach to residual film pollution control.

[0004] The film-picking mechanism is a key component of the film-forming equipment, such as... Figure 1 and Figure 2 As shown, the existing film-lifting equipment mainly consists of three working sections during film collection: the toothed section for picking up film, the lifting section, and the film-removing section. When the chain rake is working, the film-removing section is parallel to the ground, and the toothed section at the bottom of the lifting section contacts the ground surface. The depth limiting mechanism 10 is adjusted so that the toothed section 7 penetrates the soil 20-50mm. Simultaneously, the tractor pulls the implement 11 forward, and the power, via the transmission system 12, drives the drive wheel 6 to rotate the toothed section 7 on the picking chain rake 13 clockwise, picking up the residual film from the ground. When the toothed section 7 rotates to the point where the tooth tips are facing downwards, most of the residual film falls into the film collection box 9 under gravity. A small amount of residual film that fails to fall off automatically is brushed off when the toothed section 7 passes the film-removing mechanism 14. When the film collection box 9 is full, the implement 11 is driven to the edge of the field, the implement is lifted off the ground to a certain height, and the film-unloading cylinder 15 is operated to open the bottom plate of the film collection box 9, dumping the film into a pile, thus recovering the residual film. Existing film-lifting equipment uses rake-type spring teeth. These rake-type spring teeth have a small contact area with the residual film, which easily cuts and damages the residual film, thus seriously affecting the recycling of the residual film. At the same time, the strength of a single spring tooth is insufficient, and the stress it is subjected to is large, which easily causes end deformation, eventually leading to fatigue fracture of the spring tooth, greatly reducing its working life, increasing maintenance and replacement costs, and affecting farmers' income. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention provides a film-raising device for recycling residual film and its cross-type film-picking mechanism.

[0006] A cross-type film-lifting mechanism for a film-lifting device includes a spring-tooth fixed shaft, cross-type spring teeth, bolts, nuts, and washers;

[0007] The spring tooth fixing shaft is provided with a through hole, and multiple cross-shaped spring teeth are sleeved on one spring tooth fixing shaft, with one cross-shaped spring tooth corresponding to two through holes;

[0008] The cross-shaped spring tooth includes a torsion spring structure, a ring part, a connecting rod part, and a film-picking rod part, with four torsion spring structures on one cross-shaped spring tooth;

[0009] The two torsion spring structures on one side are connected by a circular ring. The inner torsion spring structure is connected by a "U"-shaped structure, which includes two inner connecting rods and a U-shaped film-lifting rod. The outer torsion spring structure has two connecting rods extending from both ends, with the ends of the two connecting rods connecting to the U-shaped film-lifting rods. The film-lifting rods on both sides are connected by connecting rods. The torsion degree of the torsion spring structure corresponding to the inner connecting rod of the cross-shaped spring teeth is greater than that of the torsion spring structure corresponding to the outer connecting rod, so that the connecting rods between the film-lifting rods on both sides and the inner connecting rod are in contact to form a cross structure.

[0010] Preferably, the inner diameter of the torsion spring structure is adapted to the outer diameter of the spring tooth fixing shaft to ensure that the torsion spring structure can fit perfectly on the spring tooth fixing shaft. The position and size of the annular part of the cross-shaped spring tooth are adapted to the through hole on the spring tooth fixing shaft to ensure that the two can be fixed by bolts, washers and nuts.

[0011] Preferably, the cross-shaped spring teeth are an integral structure, and the material used is carbon spring steel or silicon manganese spring steel.

[0012] Preferably, the four torsion spring structures on the cross-shaped spring teeth are symmetrically distributed and located on the same axis.

[0013] Preferably, the U-shaped film-picking rod is a semi-circular, rectangular, or arc-shaped film-picking rod.

[0014] A film-raising device for recycling residual film, characterized in that it includes a cross-type film-picking mechanism as described in any one of the above claims.

[0015] Compared with the prior art, the beneficial effects of the present invention include: the cross-shaped spring teeth of the present invention can distribute the pressure on the two sides of the film picking rod through the cross structure, reduce the deformation of the film picking rod ends during the operation, and make the overall structure have high strength and long service life; compared with the existing chain rake spring teeth, the cross-shaped spring teeth of the present invention have a larger contact area with the residual film during the operation, reduce the contact stress, and are less likely to damage the residual film during the residual film recycling process, thus ensuring the efficiency of residual film recycling. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the picking chain rake structure in the film-forming equipment;

[0017] Figure 2 This is a schematic diagram of the overall structure of the film-forming equipment;

[0018] Figure 3 This is a schematic diagram of the cross-type film-picking mechanism of a film-lifting device according to the present invention;

[0019] Figure 4 for Figure 3 A schematic diagram of the cross-section;

[0020] In the picture:

[0021] 1. Spring tooth fixed shaft; 1-1. Through hole;

[0022] 2-1-1, Torsion spring structure; 2-1-2, Torsion spring structure; 2-1-3, Torsion spring structure; 2-1-4, Torsion spring structure; 2-2, Circular ring section; 2-3, Two side film-lifting rod sections; 2-4, Middle film-lifting rod section; 2-5, Connecting rod section; 2-6, Connecting rod section; 2-7, Connecting rod section; 2-8, Cross structure;

[0023] 3. Bolt; 4. Washer; 5. Nut;

[0024] 6. Drive wheel; 7. Spring tooth; 8. Chain;

[0025] 9. Film collection box; 10. Depth limiting mechanism; 11. Equipment;

[0026] 12. Transmission system; 13. Pickup chain rake;

[0027] 14. Film removal mechanism; 15. Film removal cylinder. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0029] The embodiments of the present invention provide a cross-type film picking mechanism for a film-forming device. Any film-forming device that includes this cross-type film picking mechanism is within the scope of protection of the present invention. The structure of the cross-type film picking mechanism will be described in detail below.

[0030] refer to Figure 3The cross-type film-picking mechanism of this embodiment includes a spring-tooth fixed shaft 1, cross-type spring teeth, bolts 3, washers 4, and nuts 5. The spring-tooth fixed shaft 1 has a through hole 1-1. In this embodiment, four cross-type spring teeth are fitted on the spring-tooth fixed shaft, with one cross-type spring tooth corresponding to two through holes. The cross-type spring teeth include torsion spring structures 2-1-1, 2-1-2, 2-1-3, and 2-1-4, a ring portion 2-2, two side film-picking rod portions 2-3, a middle film-picking rod portion 2-4, a connecting rod portion 2-5, a connecting rod portion 2-6, and a connecting rod portion 2-7. The cross-type film-picking mechanism is an integral structure, and the material used is silicon manganese spring steel.

[0031] The four torsion spring structures on the cross-shaped spring teeth are symmetrically distributed and located on the same axis. The inner diameter of the torsion spring structure is adapted to the outer diameter of the spring tooth fixing shaft 1 to ensure that the torsion spring structure can fit perfectly on the spring tooth fixing shaft 1.

[0032] In this configuration, torsion spring structures 2-1-1 and 2-1-3 are right-handed, while torsion spring structures 2-1-2 and 2-1-4 are left-handed. Torsion spring structures 2-1-1 and 2-1-2 extend near their ends along their line of symmetry and are connected via a ring portion 2-2. The connection between torsion spring structures 2-1-3 and 2-1-4 is the same as described above. The axis of the ring portion 2-2 intersects and is perpendicular to the axis of the spring tooth fixing shaft 1, and the plane of the ring portion 2-2 is tangent to the cylindrical surface of the torsion spring structures. The position and dimensions of the ring portion 2-2 are adapted to the through hole 1-1 on the spring tooth fixing shaft 1 to ensure that both can be fixed using bolts 3, washers 4, and nuts 5.

[0033] The torsion spring structures 2-1-2 and 2-1-3 are connected by a "U"-shaped structure, including a semi-circular film-lifting rod 2-4 and a connecting rod 2-5. The connecting rod 2-5 is an extension of the torsion spring structures 2-1-2 and 2-1-3 at their ends near their line of symmetry, and is perpendicular to the axis of the torsion spring structures. The two connecting rods 2-5 are connected by the semi-circular film-lifting rod 2-4, forming an overall "U"-shaped structure.

[0034] Both torsion spring structures 2-1-1 and 2-1-4 extend a connecting rod 2-6 from their ends, away from their line of symmetry. The connecting rod 2-6 is perpendicular to the axis of the torsion spring. The end of the connecting rod 2-6 connects to a semi-circular film-lifting rod 2-3, giving the entire structure a fishhook shape. The two film-lifting rods 2-3 are connected by a connecting rod 2-7, with a quarter-circle arc forming the transition between them. The connecting rod 2-6, film-lifting rod 2-3, and connecting rod 2-7 are all on the same plane.

[0035] refer to Figure 3 and Figure 4 In this embodiment, in order to improve the structural strength, the torsion of the torsion spring structures 2-1-2 and 2-1-3 corresponding to the connecting rod 2-5 is slightly greater than the torsion of the torsion spring structures 2-1-1 and 2-1-4 corresponding to the connecting rod 2-6, so that the connecting rod 2-5 just rests against the connecting rod 2-7 to form a cross structure 2-8.

[0036] refer to Figure 1 and Figure 3 In this embodiment, during use, both ends of the spring tooth fixing shaft 1 are mounted on the chain 8 for film collection. (Reference) Figure 3 and Figure 4 The cross-shaped spring teeth rotate clockwise into the soil, and both the film-lifting rods 2-3 and 2-4 bear a certain amount of resistance. The connecting rod 2-5 bears the force of the film-lifting rod 2-4, and the force from the film-lifting rods 2-3 on both sides is transferred to the connecting rod 2-6, causing it to have a greater tendency to deform. The connecting rod 2-7 between the film-lifting rods 2-3 distributes the force to the connecting rod 2-5 through the cross structure 2-8, making the force on the connecting rods 2-5 and 2-6 more balanced and reducing the degree of bending deformation of the overall structure. Simultaneously, after the cross-shaped spring teeth enter the soil, the film-lifting rods 2-3 and 2-4 make line contact with the residual film, picking up the film and reducing the degree of damage to the residual film during the recycling process.

[0037] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A cross-type film picking mechanism of a film-stripping apparatus, characterized by comprising: The elastic tooth fixing shaft is provided with a through hole, and a plurality of cross elastic teeth are sleeved on one elastic tooth fixing shaft, and one cross elastic tooth corresponds to two through holes. The cross elastic tooth comprises four torsion spring structures, first and second ring sections, first to third connecting rod sections, and three film-pulling rod sections, and a cross elastic tooth sequentially has first to fourth torsion spring structures, the first torsion spring structure and the third torsion spring structure are right-handed, the second torsion spring structure and the fourth torsion spring structure are left-handed, the first torsion spring structure and the second torsion spring structure extend at the ends close to the symmetry line of the two and are connected through the first ring section, and the third torsion spring structure and the fourth torsion spring structure extend at the ends close to the symmetry line of the two and are connected through the second ring section. The second and third torsion spring structures on the inner side are connected through a "U" shaped structure, the "U" shaped structure comprises two third connecting rod sections on the inner side and a semicircular first film-pulling rod section, the first and fourth torsion spring structures on the outer side extend two first connecting rod sections at the ends away from the symmetry line of the two, the first connecting rod section is perpendicular to the axis of the torsion spring structure, the ends of the two third connecting rod sections on the inner side are connected with the semicircular first film-pulling rod section respectively, the ends of the two first connecting rod sections are connected with the semicircular second and third film-pulling rod sections respectively, the second and third film-pulling rod sections on the two sides are connected through the second connecting rod section between the two and the other ends of the second and third film-pulling rod sections on the two sides are connected with the two first connecting rod sections on the outer side respectively, the transition parts between the second and third film-pulling rod sections and the second connecting rod section adopt a quarter of a circle arc, the two first connecting rod sections, the second and third film-pulling rod sections, the second connecting rod section are in the same plane, and the torsion degrees of the second and third torsion spring structures corresponding to the third connecting rod section on the inner side of the cross elastic tooth are greater than the torsion degrees of the first and fourth torsion spring structures corresponding to the first connecting rod section on the outer side, so that the second connecting rod section between the second and third film-pulling rod sections on the two sides and the third connecting rod section on the inner side are in contact to form a cross structure. The inner diameters of the four torsion spring structures are adapted to the outer diameter of the elastic tooth fixing shaft, so as to ensure that the four torsion spring structures can be sleeved on the elastic tooth fixing shaft, and the positions and sizes of the first and second ring sections of the cross elastic tooth are adapted to the through holes on the elastic tooth fixing shaft, so as to ensure that the two can be fixed through the bolt, the gasket and the nut.

2. The cross-type film picking mechanism of the film forming apparatus according to claim 1, characterized by, The cross elastic tooth is an integral structure as a whole, and the material used is carbon spring steel or silicon manganese spring steel.

3. The cross-type film picking mechanism of the film forming apparatus according to claim 1, wherein The four torsion spring structures on the cross elastic tooth are symmetrically distributed as a whole and are located on the same axis.

4. The cross-type film picking mechanism of the film forming apparatus according to claim 1, wherein The cross film-pulling mechanism comprises the cross elastic tooth.

5. A film-stripping apparatus for recovering residual film, characterized by ​

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