Feeding hopper for sheet processing

Abstract

The utility model relates to the technical field of plastic sheet processing, in particular to a feeding hopper for sheet processing. Comprising a shell and a filtering part, the filtering part comprises a filter screen; the filter screen is arranged in the shell; the filter screen is obliquely arranged relative to the vertical direction; a material conveying pipe is arranged on the shell; the conveying pipe extends into the shell; and the output end of the conveying pipe faces the filter screen. In the prior art, narrow and long materials which are not completely crushed are easily mixed into crushed materials, and when the materials enter equipment through a hopper, a feeding channel between the hopper and the equipment is easily blocked. And the production of the plastic sheet is seriously influenced. Compared with the prior art, long and narrow materials in crushed materials can be effectively filtered out, so that the long and narrow materials are prevented from entering the feeding channel to influence subsequent production.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic sheet processing, in particular to a feeding hopper for sheet processing. Background Art

[0002] With the continuous development of technology, plastics are increasingly being used in daily life and production. In particular, to meet the production and processing needs of various industries, it is necessary to produce plastic sheets, which are then subsequently processed. Plastic sheets are formed by heating and melting plastic raw materials in a plastic extruder or plastic calender, and then extruding or calendering them into a plastic coil with a thickness of approximately 0.25-1.00 mm.

[0003] During the operation of extruders and calenders, raw materials are continuously fed into the equipment through a hopper. Typically, to facilitate feeding from the hopper to the equipment, the raw materials are processed into pellets. These raw materials are often unprocessed raw materials or crushed plastic products. During the production of plastic products on injection molding machines, runners are attached to the plastic products. Because the plastic in these runners is in good condition and has a high recycling rate, they become a major source of crushed material. However, due to their long, narrow shape, a small portion of these runners may not be completely broken during the crushing process, retaining their narrow, long shape. This type of runner can become mixed with the crushed material. When the crushed material enters the hopper through the feed pipe, these incompletely broken runners can easily clog the feed channel between the hopper and the equipment, seriously impacting the normal production of plastic sheet. Utility Model Content

[0004] In view of the technical problems of the prior art, the utility model provides a feeding hopper for sheet material processing.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A feeding hopper for sheet material processing comprises: an outer shell, a filter portion; the filter portion comprises a filter screen; the filter screen is arranged in the outer shell; the filter screen is arranged at an angle compared to the vertical direction; a feed pipe is arranged on the outer shell; the feed pipe extends into the outer shell; and the output end of the feed pipe faces the filter screen.

[0007] In actual use, crushed material is fed into the housing through a feed pipe. Once inside, the crushed material, under the influence of gravity, moves along the surface of the filter. During this movement, crushed material that meets the required size will pass through the filter and enter the feed channel between the hopper and the equipment. Incompletely crushed, narrow, long materials are separated by the filter. This effectively prevents narrow, long materials from entering the feed channel and causing it to become stuck.

[0008] Furthermore, the filter portion also includes a baffle; the filter screen is connected to the baffle; the filter screen surrounds the baffle; the filter screen and the baffle are located on the same conical surface; and the output end of the feed pipe faces the baffle.

[0009] Furthermore, the filter screen is provided with a connecting protrusion; the baffle is provided with a connecting groove corresponding to the connecting protrusion; and the connecting protrusion is detachably embedded in the connecting groove.

[0010] Furthermore, a discharge port is provided on the outer shell; the discharge port corresponds to the filter screen.

[0011] Furthermore, a fixing plate and a maintenance plate are provided on the shell; one end of the maintenance plate is fitted with the side wall of the discharge port; the other end of the maintenance plate is swingably connected to the fixing plate; when the maintenance plate swings, the filter screen can be exposed.

[0012] Furthermore, a swinging structure is provided on the shell; the swinging structure protrudes from the surface of the shell; the swinging structure includes a connecting block; the number of the connecting blocks is two; one of the connecting blocks is connected to the fixed plate; the other connecting block is connected to the maintenance plate; the two connecting blocks are connected in a swingable manner.

[0013] Furthermore, it also includes a power device; the power device includes a power motor and a transmission rod; the output end of the power motor is connected to the transmission rod; the transmission rod extends into the shell; and the transmission rod is connected to the filter part. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 : Overall structure diagram.

[0015] Figure 2 :Filtration unit structure diagram.

[0016] Figure 3 : Connection bulge structure diagram.

[0017] Figure 4 : Structural diagram of the swing structure.

[0018] In the figure: 1. Shell; 11. Feed pipe; 12. Discharge port; 13. Fixing plate; 14. Maintenance plate; 15. Swinging structure; 151. Connecting block; 2. Power unit; 21. Power motor; 22. Transmission rod; 3. Filter unit; 31. Filter screen; 311. Connecting protrusion; 32. Baffle; 321. Connecting groove. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] A feeding hopper for sheet material processing comprises: an outer shell 1, a power device 2, and a filter unit 3. The outer shell 1 is a hollow funnel-shaped shell structure. A feeding channel is also provided at the end of the outer shell 1, so that it can be connected to equipment such as an extruder and a calender to provide raw materials to such equipment. The outer shell 1 is provided with a feeding pipe 11, a discharge port 12, a fixed plate 13, a maintenance plate 14, and a swinging structure 15. Specifically, one end of the feeding pipe 11 can be connected to the feeding equipment, and the other end extends into the outer shell 1, so that the crushed material provided by the feeding equipment can enter the outer shell 1 through the feeding pipe 11. The discharge port 12 is opened on one side of the outer shell 1, and the interior of the outer shell 1 can be connected to the outside world through the discharge port 12. The maintenance plate 14 is in an arc shape corresponding to the outer shell 1. One end of the maintenance plate 14 is in contact with the side wall of the discharge port 12, and the other end is swingably connected to the fixed plate 13 through the swinging structure 15. When the maintenance plate 14 swings through the swing structure 15, the interior of the shell 1 can be exposed to the outside. The swing structure 15 includes a connecting block 151. The connecting block 151 itself is L-shaped. There are two connecting blocks 151, one of which is connected to the fixed plate 13, and the other is connected to the maintenance plate 14. The two connecting blocks 151 are connected in a swingable manner. At the same time, the two connecting blocks 151 protrude from the surface of the shell 1, so that there is a certain distance between the center of the swing of the connecting block 151 and the surface of the shell 1, so that the swinging process of the maintenance plate 14 will not interfere with the fixed plate 13, and then, under the premise that the maintenance plate 14 can swing relative to the fixed plate 13, the maintenance plate 14 and the fixed plate 13 can be fully fitted. Finally, the gap between the maintenance plate 14 and the fixed plate 13 is reduced, and the broken material is prevented from being exposed from the gap between the maintenance plate 14 and the fixed plate 13.

[0021] The power unit 2 includes a power motor 21 and a transmission rod 22. The power motor 21 is fixed to the housing 1. The output end of the power motor 21 is connected to the transmission rod 22 to drive the transmission rod 22 to rotate. The transmission rod 22 extends into the housing 1 and coincides with the axis of the housing 1. A stirring rod is provided on the transmission rod 22. Driven by the power motor 21, the stirring rod can move in a circular motion along the inner wall of the housing 1. The end of the transmission rod 22, away from the power motor 21, extends into the feed channel and is equipped with a screw for conveying and compressing the crushed material.

[0022] The filter unit 3 is disposed inside the housing 1. The filter unit 3 includes a filter screen 31 and a baffle 32. The filter screen 31 and the baffle 32 are disposed on the same conical surface. That is, the filter screen 31 and the baffle 32 are inclined relative to the vertical direction. The baffle 32 is a solid plate. The baffle 32 surrounds the transmission rod 22 and is connected to the transmission rod 22. At the same time, the baffle 32 is in a corresponding position with the feed pipe 11, so that the output end of the feed pipe 11 faces the baffle 32. The filter screen 31 is composed of two identical semicircular components. The filter screen 31 is evenly provided with through holes for the crushed material to pass through. The filter screen 31 surrounds the baffle 32 and is detachably connected to the baffle 32 via a connecting protrusion 311. Specifically, the connecting protrusion 311 is disposed on the side of the filter screen 31 close to the baffle 32. The baffle 32 is provided with a connecting groove 321 corresponding to the connecting protrusion 311. When the filter screen 31 is connected to the baffle 32, the connection protrusion 311 is embedded in the connection groove 321. At the same time, the outer edge of the filter screen 31 is in contact with the inner wall of the housing 1 and corresponds to the discharge port 12.

[0023] In actual use, driven by the power motor 21, the transmission rod 22 is in a state of continuous rotation. Thus, driven by the transmission rod 22, the baffle 32 can drive the filter screen 31 to rotate continuously. The feed pipe 11 is connected to the feeding device, which outputs the crushed material into the interior of the housing 1 through the feed pipe 11. After the crushed material is output from the output end of the feed pipe 11, it will fall onto the baffle 32. Due to the influence of the conveying process, the posture of the crushed material landing on the baffle 32 is difficult to control. In particular, if the crushed material contains incompletely crushed narrow strips of material, the posture of the narrow strips of material landing on the baffle 32 will present a variety of different states. The following describes the posture of the narrow strips of material in two states: perpendicular to the baffle 32 and non-perpendicular to the baffle 32. If the narrow strips of material are not perpendicular to the baffle 32, the contact area between the narrow strips of material and the baffle 32 is larger. Once the narrow strips of material land on the baffle 32, they will roll towards the filter screen 31 under the action of gravity. If the sliver is perpendicular to the surface of baffle 32, one end of the sliver will first contact baffle 32. At this point, baffle 32 is in a continuous rotational state, accelerating the end of the sliver, causing it to transition from a perpendicular position to a non-perpendicular position. Subsequently, under the influence of gravity, the sliver rolls toward the filter 31. Although the sliver is longer, its diameter is similar to that of normal crushed material. Through this process, baffle 32 can be used to adjust the sliver's posture to prevent it from directly passing through the filter 31 under certain falling postures.

[0024] After the posture of the crushed material is adjusted by the baffle 32, the crushed material will slide toward the filter screen 31 under the action of gravity. After the crushed material slides onto the filter screen 31, it will continue to slide toward the edge of the filter screen 31 under the action of gravity. During the sliding process of the crushed material, the crushed material will fall into the feed channel through the through-holes of the filter screen 31. At the same time, the filter screen 31 is in a state of continuous rotation, which will increase the length of the movement path of the crushed material on the filter screen 31, thereby extending the time the crushed material stays on the filter screen 31, and allowing the crushed material to pass through the filter screen 31 more fully. However, the narrow and long material cannot pass through the filter screen 31, and under the action of gravity, it will eventually move to the joint between the outer edge of the filter screen 31 and the inner wall of the shell 1.

[0025] When the narrow strips of material reach the outer edge of the filter screen 31, they are unable to slide further downward and, driven by the filter screen 31, they move in a circular motion. Ultimately, the narrow strips of material are driven by the filter screen 31 to the discharge port 12 and discharged out of the housing 1 through the discharge port 12. In summary, the present invention effectively separates the narrow strips of material from the crushed material, thereby preventing the narrow strips of material from clogging the feed channel and affecting the normal production of plastic sheets.

[0026] Since the posture of the narrow and long materials has been adjusted by the baffle 32, it is difficult for the narrow and long materials to pass through the through holes on the filter screen 31. Therefore, the diameter of the through holes on the filter screen 31 can be appropriately increased to speed up the passage rate of normal crushed materials and prevent normal crushed materials from accumulating at the outer edge of the filter screen 31.

[0027] At the same time, by swinging the maintenance plate 14, the filter 31 can be exposed to the outside, allowing regular maintenance of the filter 31. If the filter 31 needs to be replaced, the filter 31 assembly can be lifted to disengage the connecting protrusion 311 from the connecting groove 321, thereby separating the filter 31 assembly from the baffle 32. In this way, the filter 31 can be replaced.

[0028] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A feeding hopper for sheet material processing, characterized in that: include: Housing (1), filter portion (3); The filter portion (3) includes a filter screen (31); The filter (31) is arranged in the housing (1); The filter screen (31) is arranged to be inclined relative to the vertical direction; The housing (1) is provided with a material delivery pipe (11); The material delivery pipe (11) extends into the housing (1); The output end of the feed pipe (11) faces the filter screen (31); The filter portion (3) further includes a baffle (32); The filter screen (31) is connected to the baffle (32); The filter screen (31) surrounds the baffle (32); The filter screen (31) and the baffle (32) are located on the same conical surface; The output end of the material delivery pipe (11) faces the baffle (32).

2. A sheet material processing feeding hopper according to claim 1, characterized in that: The filter screen (31) is provided with a connecting protrusion (311); The baffle (32) is provided with a connection groove (321) corresponding to the connection protrusion (311); The connecting protrusion (311) is detachably embedded in the connecting groove (321).

3. A sheet material processing feeding hopper according to claim 1, characterized in that: The housing (1) is also provided with a discharge port (12); The discharge port (12) corresponds to the filter screen (31).

4. A sheet material processing feeding hopper according to claim 3, characterized in that: The housing (1) is further provided with a fixing plate (13) and a maintenance plate (14); One end of the maintenance plate (14) is in contact with the side wall of the discharge port (12); The other end of the maintenance plate (14) is swingably connected to the fixing plate (13); When the maintenance plate (14) is swung, the filter screen (31) can be exposed.

5. A sheet material processing feeding hopper according to claim 4, characterized in that: The housing (1) is further provided with a swing structure (15); The swing structure (15) protrudes from the surface of the housing (1); The swing structure (15) includes a connecting block (151); The number of the connecting blocks (151) is two; One of the connecting blocks (151) is connected to the fixing plate (13); Another connecting block (151) is connected to the maintenance plate (14); A pivotable connection between two connecting blocks (151).

6. A sheet material processing feeding hopper according to claim 1, characterized in that: Also includes a power unit (2); The power device (2) comprises a power motor (21) and a transmission rod (22); The output end of the power motor (21) is connected to the transmission rod (22); The transmission rod (22) extends into the housing (1); The transmission rod (22) is connected to the filter portion (3).

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