Film spreading roller

Abstract

The utility model relates to the technical field of agricultural equipment, in particular to a film spreading roller. A film spreading roller comprises a round roller, the two ends of the round roller are detachably connected with one end of an end, the other end of the end is connected with a rotating shaft, and the surface of the round roller is connected with a set of spiral protrusions. According to the utility model, the end head is arranged, the side surface of the conical section of the end head is an inclined surface and is just parallel to the side surface of a soil beam piled up on one side of a groove formed in the front ditching disc in the process that the end head advances a film along with the round roller, and the soil beam piled up on one side of the groove cannot be backfilled into the groove, so that the subsequent pressing and burying of the edge of the mulching film cannot be influenced. A set of spiral protrusions are arranged on the surface of a round roller, the spiral protrusions are composed of the positive spiral protrusions and the negative spiral protrusions, the connecting portions of the positive spiral protrusions and the negative spiral protrusions are located in the middle of the round roller, in the film laying process, the positive spiral protrusions and the negative spiral protrusions can extend a mulching film to the two sides from the middle of the mulching film, and it is guaranteed that the mulching film is laid flatly.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural equipment, in particular to a film spreading roller. Background Technique

[0002] A film spreading roller is a common component on agricultural machinery, mainly used on various types of film laying equipment to support and stretch the plastic film, so as to avoid wrinkles or bulges when the plastic film is laid on the ridge.

[0003] Through retrieval, an automatic film cutting device for a film laying machine with the publication number of CN220068410U, an automatic film cutting device for a film laying machine, includes a front vehicle frame. A pressing roller is movably connected to the bottom of the front vehicle frame. A plastic film coil is movably connected above the right side of the front vehicle frame. A film spreading roller is movably connected below the right side of the front vehicle frame. The plastic film of the plastic film coil bypasses the outer wall of the film spreading roller and is laid on the ground. A rear vehicle frame is fixedly connected to the right side of the front vehicle frame. A trimming roller is fixedly connected to the bottom of the rear vehicle frame.

[0004] However, the film spreading roller of the above-mentioned automatic film cutting device for a film laying machine is a cylinder with the same diameter. During the film laying process, the ditching disc in front of the film spreading roller will open a groove on the soil surface to press and bury the edge of the plastic film. There will be a soil ridge bulging on both sides of the groove. However, the cylindrical film spreading roller behind the ditching disc will press on the bulging soil ridge at both ends during the traveling process, and will backfill the bulging soil ridge into the groove, affecting the subsequent pressing and burying of the plastic film edge; at the same time, the surface of the film spreading roller of the above-mentioned automatic film cutting device for a film laying machine is smooth, and it is impossible to extend the plastic film that passes through the film spreading roller and has wrinkles. Content of the Utility Model

[0005] In view of the existing problems, the utility model provides a film spreading roller to solve the problems that the film spreading roller of an automatic film cutting device for a film laying machine mentioned in the background technique will press on the bulging soil ridge at both ends during the traveling process, and will backfill the bulging soil ridge into the groove, affecting the subsequent pressing and burying of the plastic film edge, and the surface of the film spreading roller of an automatic film cutting device for a film laying machine is smooth, and it is impossible to extend the plastic film that passes through the film spreading roller and has wrinkles.

[0006] In order to solve the existing problems, the utility model provides a film spreading roller, which includes a circular roller. A detachable end is installed at each end of the circular roller. A rotating shaft is connected to the end of the end away from the circular roller. Spiral protrusions are arranged on the surface of the circular roller.

[0007] Furthermore, the end includes a connecting section. A conical section is connected to one end of the connecting section. A first through groove is opened in the connecting section. A second through groove is opened in the conical section.

[0008] Further, two bearings are embedded in the first through groove, and the rotating shaft passes through the second through groove and is inserted into the inner ring of the bearing.

[0009] Further, the diameter of the second through groove is smaller than that of the first through groove, and the rotating shaft is adapted to the second through groove.

[0010] Further, the part where the conical section is connected to the connecting section is the larger diameter end.

[0011] Further, a set of the spiral protrusions includes a positive spiral protrusion, and an anti-spiral protrusion is connected to one end of the positive spiral protrusion, and the positive spiral protrusion and the anti-spiral protrusion have the same size.

[0012] Further, the connecting part of the positive spiral protrusion and the anti-spiral protrusion is in the middle of the round roller.

[0013] Further, a movable sleeve is rotatably connected to the end of the rotating shaft away from the conical section.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. By providing the end head, during the process of the end head advancing and spreading the film along with the round roller, the side surface of the conical section of the end head is an inclined surface, which is just parallel to the side surface of the soil ridge heaped up by one side of the groove opened by the front furrowing disc. Compared with the existing film spreading roller with the same diameter of a cylinder, it will not backfill the soil ridge heaped up by one side of the groove into the groove, thus not affecting the subsequent pressing and burying of the edge of the plastic film.

[0016] 2. By providing a set of spiral protrusions on the surface of the round roller, and the spiral protrusions are composed of a positive spiral protrusion and an anti-spiral protrusion, and the connecting part of the positive spiral protrusion and the anti-spiral protrusion is in the middle of the round roller. During the process of laying the film, the positive spiral protrusion and the anti-spiral protrusion will extend the plastic film from the middle of the plastic film to both sides, ensuring that the plastic film is laid flat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the existing film spreading roller;

[0018] Figure 2 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 3 is a schematic diagram of the separation of the end head and the round roller of the present utility model;

[0020] Figure 4 is a separated view of the connecting section, conical section, rotating shaft and bearing of the present utility model;

[0021] Figure 5 is a schematic diagram of a partial structure of the present utility model;

[0022] Figure 6 Schematic diagram of the split structure of the connection section and the conical section of the present utility model;

[0023] In the figure: 1. Round roller; 101. Third through groove; 2. End head; 201. Connection section; 202. Conical section; 203. First through groove; 204. Second through groove; 3. Rotating shaft; 4. Spiral protrusion; 401. Positive spiral protrusion; 402. Reverse spiral protrusion; 5. Bearing; 6. Movable sleeve; Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figure 1-6 , a film spreading roller, including a round roller 1, a detachable end head 2 is installed at each end of the round roller 1, a rotating shaft 3 is connected to the end of the end head 2 away from the round roller 1, and a spiral protrusion 4 is arranged on the surface of the round roller 1.

[0026] Among them, the end head 2 includes a connection section 201, a conical section 202 is connected to one end of the connection section 201, a first through groove 203 is opened in the connection section 201, and a second through groove 204 is opened in the conical section 202.

[0027] Among them, two bearings 5 are embedded in the first through groove 203, and the rotating shaft 3 passes through the second through groove 204 and is inserted into the inner ring of the bearing 5.

[0028] It should be noted that: referring to Figures 1 to 6 , by setting two bearings 5, during use, even if the movable sleeve 6 cannot rotate on the rotating shaft 3 due to the film and dust being caught between the rotating shaft 3 and the movable sleeve 6, at this time, the stuck movable sleeve 6 and the rotating shaft 3 can still rotate within the outer ring of the bearing 5 together with the inner ring of the bearing 5.

[0029] Among them, the diameter of the second through groove 204 is smaller than the diameter of the first through groove 203, and the rotating shaft 3 is adapted to the second through groove 204.

[0030] Among them, the part where the conical section 202 is connected to the connection section 201 is the end with the larger diameter.

[0031] Among them, a set of spiral protrusions 4 includes a positive spiral protrusion 401, and a reverse spiral protrusion 402 is connected to one end of the positive spiral protrusion 401, and the positive spiral protrusion 401 and the reverse spiral protrusion 402 have the same size.

[0032] One end of the rotating shaft 3 away from the conical section 202 is rotatably connected to a movable sleeve 6.

[0033] By providing the positive spiral protrusion 401 and the reverse spiral protrusion 402, when the elliptical roller 1 rotates, a force that pushes the plastic film located under the roller 1 outward from the middle to both sides can be generated, so that the plastic film can be extended and laid flat on the ground.

[0034] Wherein, the connecting part of the positive spiral protrusion 401 and the reverse spiral protrusion 402 is at the middle of the roller 1.

[0035] It should be noted that: the connecting part of the positive spiral protrusion 401 and the reverse spiral protrusion 402 is at the middle of the roller 1. Such a setting is to enable the positive and reverse spiral protrusions to extend the plastic film from the middle to both sides.

[0036] Embodiment 1: In use, first install the two rotating shafts 3 at both ends of the film spreading roller on the film laying machine. The film laying machine is a common agricultural machine and is prior art, and its structure will not be described in detail. Then, the plastic film is closely wound around the lower side of the roller 1. Then, start the machine to drive the film laying machine forward. The ditching disks on both sides in front of the roller will open two grooves, and a soil ridge will be piled up along the upper edges of the two grooves. The subsequent film spreading roller will move forward driven by the film laying machine. During the forward movement, since the lower side of the roller 1 presses the plastic film on the ground, the roller 1 will rotate as the film laying machine moves forward. The rotation of the roller 1 will drive the ends 2 connected to both ends to rotate synchronously. At this time, the side surface of the conical section 202 of the end 2 is an inclined surface, and the inclined surface is exactly parallel and slightly in contact with the side surface of the soil ridge piled up along one side of the upper edge of the groove, but will not squeeze the soil ridge. Therefore, the soil ridge will not be squeezed and backfilled into the groove. At the same time, during the forward rotation of the roller 1, a set of spiral protrusions 4 provided on the surface of the roller will also rotate synchronously with the roller 1. At this time, the positive spiral protrusion 401 and the reverse spiral protrusion 402 of the spiral protrusion 4 will extend the plastic film from the middle to both sides while rotating, ensuring that the plastic film is laid flat.

[0037] Embodiment 2: When the roller 1 rotates, it will drive the ends 2 connected to both ends to rotate synchronously. The end 2 will drive the outer rings of the two bearings 5 to rotate on the inner rings. At the same time, the outer surface of the movable sleeve 6 rotatably connected to one end of the rotating shaft 3 away from the conical section 202 can be fixedly connected to the film laying machine. During the use process, even if the movable sleeve 6 and the rotating shaft 3 are stuck due to the plastic film and dust being involved and the movable sleeve 6 cannot rotate on the rotating shaft 3, it will not affect the laying of the plastic film at this time, because the inner ring of the bearing 5 is sleeved on the rotating shaft 3, and the roller 1, the end 2 and the outer ring of the bearing 5 can still rotate on the inner ring sleeved on the rotating shaft 3, and the plastic film laying can continue.

[0038] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model; any ordinary technician in the industry can smoothly implement the present utility model according to what is shown in the accompanying drawings of the specification and what is described above; however, any minor changes, modifications and equivalent variations made by those skilled in the art within the scope of the technical solution of the present utility model by using the technical content disclosed above are all equivalent embodiments of the present utility model; at the same time, any changes, modifications and equivalent variations made to the above embodiments based on the essential technology of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A film spreading roller, comprising a round roller (1), characterized in that: A detachable end cap (2) is mounted on each of the two ends of the round roller (1); an end of the end cap (2) away from the round roller (1) is connected to a rotating shaft (3); and a spiral protrusion (4) is arranged on the surface of the round roller (1).

2. A film spreading roller according to claim 1, characterized in that: The end cap (2) comprises a connecting section (201), one end of the connecting section (201) is connected to a conical section (202), a first through slot (203) is provided in the connecting section (201), and a second through slot (204) is provided in the conical section (202).

3. A film spreading roller according to claim 2, characterized in that: Two bearings (5) are embedded in the first through slot (203), and the rotating shaft (3) passes through the second through slot (204) and is inserted into the inner ring of the bearing (5).

4. A film spreading roller according to claim 3, characterized in that: The diameter of the second through slot (204) is smaller than the diameter of the first through slot (203), and the rotating shaft (3) is adapted to the second through slot (204).

5. The film spreading roller according to claim 4, characterized in that: The portion where the tapered section (202) is connected to the connecting section (201) is the end with a larger diameter.

6. The film spreading roller according to claim 5, characterized in that: A group of the spiral protrusions (4) includes a positive spiral protrusion (401), one end of which is connected to a reverse spiral protrusion (402), and the positive spiral protrusion (401) and the reverse spiral protrusion (402) have the same size.

7. The film spreading roller according to claim 6, characterized in that: The connection portion between the positive spiral protrusion (401) and the reverse spiral protrusion (402) of the positive screw is located in the middle of the round roller (1).

8. A film spreading roller according to claim 7, characterized in that The two ends of the round roller (1) are provided with through grooves three (101) matching the size of the connecting section (201), and the connecting section (201) is inserted into the through grooves three (101).

9. A film spreading roller according to claim 8, characterized in that The end of the rotating shaft (3) away from the conical section (202) is rotatably connected to a movable sleeve (6).

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