Plastic film trimming and recycling device

Abstract

The utility model discloses a plastic film trimming and recycling device, which belongs to the technical field of film trimming and recycling and comprises a machine table. A first supporting frame, a mounting frame, a second supporting frame and a third supporting frame are sequentially and fixedly mounted on the upper side of the machine table from left to right, and the mounting frame is located on the lower side of the first supporting frame. A guide roller, an edge cutting assembly, a first ejection assembly and two positioning rollers are sequentially installed on the first supporting frame from top to bottom, a slitting mechanism is installed on the second supporting frame, a guide roller is installed on the third supporting frame, a material receiving hopper is installed on the installation frame, a negative pressure pipe is fixedly installed on the lower side of the material receiving hopper, and the material receiving hopper is communicated with a negative pressure pipeline through the negative pressure pipe. And the slitting mechanism comprises a second ejection assembly and a slitting assembly, the second ejection assembly is installed on the lower side of the second supporting frame, and the slitting assembly is installed on the upper side of the second supporting frame. In this way, the second ejection assembly drives the slitting assembly to move downwards, and the edge cutting end of the thin film is separated from the thin film.

Description

Technical Field

[0001] The utility model relates to the technical field of film trimming recovery, in particular to a plastic film trimming recovery device. Background Art

[0002] The edges of the film produced by the cast film machine usually need to be trimmed to make the produced film uniform; at the same time, in order to avoid waste, the trimmed edges of the film can be recycled and put back into use after processing.

[0003] For example, Chinese patent CN220074876U discloses a waste edge recovery device after film trimming. The device is provided with a reciprocatingly sliding guide block, in which a guide groove for the waste edge to pass through is provided. A driving mechanism drives the guide block to move and roll up and collect the trimmed film.

[0004] However, the cutter is prone to generate heat due to friction after being in contact with the film for a long time. If it is not separated in time, the cut film may stick together. In addition, when cutting the end of the cut edge, in order to avoid damaging the middle of the film, incomplete cutting may occur.

[0005] Based on this, the utility model designs a plastic film edge trimming and recycling device to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a plastic film edge trimming and recycling device.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A plastic film trimming and recycling device, comprising a machine platform;

[0009] The upper side of the machine is fixedly mounted with a first support frame, a mounting frame, a second support frame and a third support frame from left to right in sequence, and the mounting frame is located at the lower side of the first support frame;

[0010] The first support frame is equipped with guide rollers, trimming components, first ejection components and two positioning rollers from top to bottom, the second support frame is equipped with a slitting mechanism, the third support frame is equipped with guide rollers, the mounting frame is equipped with a receiving hopper, a negative pressure pipe is fixedly installed at the lower side of the receiving hopper, and the receiving hopper is connected to the negative pressure pipeline through the negative pressure pipe;

[0011] The slitting mechanism comprises a second ejection assembly and a slitting assembly, wherein the second ejection assembly is mounted on the lower side of the second support frame, and the slitting assembly is mounted on the upper side of the second support frame.

[0012] Furthermore, the trimming assembly includes a push rod and a trimming knife. The push rod is fixedly mounted on the upper side of the first support frame, and the trimming knife is fixedly mounted on the output end of the push rod.

[0013] Furthermore, the first ejection assembly includes a guide assembly and a moving assembly, the guide assembly is installed on the right side of the first support frame, and the moving assembly is installed on the left side of the first support frame.

[0014] Furthermore, the guide assembly includes a rotating shaft and a fixed rotating roller. The rotating shaft is fixedly installed on the right side of the first support frame, and the fixed rotating roller is rotatably installed in the middle of the rotating shaft.

[0015] Furthermore, the moving assembly includes a first cylinder, a moving frame, a limiting rod, a moving rotating roller and a through hole. The first cylinder is fixedly installed on the left side of the first support frame, the moving frame is fixedly installed on the output end of the first cylinder, the limiting rod is symmetrically fixedly installed on the left side of the moving frame, and the limiting rod is connected to the first support frame in a limited sliding manner; the moving rotating roller is symmetrically rotatably installed on the inner side of the moving frame, and a through hole is opened in the middle of the moving rotating roller; both ends of the rotating shaft pass through the through hole; the size of the through hole is larger than the rotating shaft.

[0016] Furthermore, the second ejection assembly has the same structure as the first ejection assembly.

[0017] Furthermore, the slitting assembly includes a support frame, a guide rod, a movable plate, a slitting knife and a connecting assembly. The support frame is fixedly mounted on the upper side of the second support frame, and a plurality of guide rods are limitedly and slidably connected to the support frame; the bottom ends of the guide rods are symmetrically fixedly mounted on the upper side of the movable plate, and a slitting knife is fixedly mounted on the bottom of the movable plate; the connecting assembly is mounted on the second ejection assembly, the second support frame and the movable plate.

[0018] Furthermore, the connecting assembly includes a connecting rod and a rotating rod, the middle part of the connecting rod is rotatably mounted on the upper side of the second support frame, the two ends of the connecting rod are respectively rotatably connected to one end of a rotating rod, the other end of the upper rotating rod is rotatably mounted on the side of the movable plate, and the other end of the lower rotating rod is rotatably mounted on the movable frame of the second ejection assembly.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The trimmed edge of the film is positioned by the positioning roller to prevent the trimmed edge of the film from moving and overlapping, resulting in uneven traction on the film, thereby causing deformation of the edge of the film; after the trimmed film moves to the rear side of the slitting mechanism and passes through the next traction roller, the trimmed edge of the film is ejected upward by the second ejection assembly, and at the same time, the second ejection assembly drives the slitting assembly to move downward to separate the trimmed edge of the film from the film, thereby ensuring thorough slitting while avoiding damage to the middle part of the film; the end of the trimmed edge of the film falls into the receiving hopper and is continuously transported to the left through the negative pressure pipe; then the first ejection assembly is started to separate the film and the trimmed edge of the film after slitting, thereby preventing the trimming assembly from heating up due to friction during long-term slitting, resulting in thermal adhesion between the film and the trimmed edge of the film, affecting the trimming effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A three-dimensional plastic film trimming and recycling device according to the utility model Figure 1 ;

[0023] Figure 2 This is a front view of a plastic film trimming and recycling device of the utility model;

[0024] Figure 3 is a schematic diagram of a first support frame and its connection structure;

[0025] Figure 4 It is a schematic diagram of a mobile rack and its connection structure;

[0026] Figure 5 is a schematic diagram of a second support frame and its connection structure;

[0027] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0028] The numbers in the figure represent:

[0029] 1. Machine; 11. First support frame; 12. Second support frame; 13. Third support frame; 14. Mounting frame; 2. Trimming assembly; 21. Push rod; 22. Trimming knife; 3. Guide roller; 4. First ejector assembly; 41. Rotating shaft; 42. Fixed rotating roller; 43. First cylinder; 44. Moving frame; 45. Limit rod; 46. Moving rotating roller; 47. Through hole; 5. Positioning roller; 6. Slitting mechanism; 61. Second ejector assembly; 62. Slitting assembly; 621. Support frame; 622. Guide rod; 623. Moving plate; 624. Slitting knife; 625. Connecting rod; 626. Rotating rod; 7. Film; 8. Receiving hopper; 9. Negative pressure pipe. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0032] In some embodiments, please refer to the attached instructions. Figure 1-4 , a plastic film trimming and recycling device, comprising a machine platform 1;

[0033] The upper side of the machine 1 is fixedly mounted with a first support frame 11, a mounting frame 14, a second support frame 12 and a third support frame 13 from left to right, and the mounting frame 14 is located at the lower side of the first support frame 11;

[0034] The first support frame 11 is sequentially installed with a guide roller 3, a trimming assembly 2, a first ejection assembly 4 and two positioning rollers 5 from top to bottom, the second support frame 12 is installed with a slitting mechanism 6, the third support frame 13 is installed with a guide roller 3, and the mounting frame 14 is installed with a receiving hopper 8. A negative pressure pipe 9 is fixedly installed at the lower side of the receiving hopper 8, and the receiving hopper 8 is connected to the negative pressure pipeline through the negative pressure pipe 9;

[0035] The slitting mechanism 6 includes a second ejection assembly 61 and a slitting assembly 62 . The second ejection assembly 61 is installed on the lower side of the second support frame 12 , and the slitting assembly 62 is installed on the upper side of the second support frame 12 .

[0036] In this embodiment, when the plastic film trimming and recycling device works normally, the film 7 is guided by the guide roller 3, the trimming assembly 2 is inserted into the edge of the film 7, and the edge of the film 7 is trimmed. Then, the film 7 after the edge is cut is continuously transported backward, and after the steering support of the first ejection assembly 4, the trimming of the film 7 is positioned by the positioning roller 5 to avoid the trimming of the film 7 from moving and overlapping, resulting in uneven traction on the film 7, thereby causing deformation of the edge of the film 7; after the trimming of the film 7 moves to the rear side of the slitting mechanism 6 and passes through the next traction roller, The cut edge of the film 7 is ejected upward by the second ejection assembly 61, and at the same time, the second ejection assembly 61 drives the slitting assembly 62 to move downward to separate the cut edge end of the film 7 from the film 7, thereby ensuring thorough slitting while avoiding damage to the middle part of the film 7; the end of the cut edge of the film 7 falls into the receiving hopper 8 and is continuously conveyed to the left through the negative pressure pipe 9; then the first ejection assembly 4 is started to separate the film 7 and the cut edge of the film 7 after slitting, so as to avoid the heat rise of the trimming assembly 2 due to friction during long-term slitting, resulting in thermal adhesion between the film 7 and the cut edge of the film 7, thereby affecting the trimming effect.

[0037] In some embodiments, Figure 1-6 As shown, as a preferred embodiment of the utility model, the trimming assembly 2 includes a push rod 21 and a trimming knife 22. The push rod 21 is fixedly mounted on the upper side of the first support frame 11, and the trimming knife 22 is fixedly mounted on the output end of the push rod 21;

[0038] The first ejection assembly 4 includes a guide assembly and a moving assembly, the guide assembly is installed on the right side of the first support frame 11, and the moving assembly is installed on the left side of the first support frame 11;

[0039] The guide assembly includes a rotating shaft 41 and a fixed rotating roller 42. The rotating shaft 41 is fixedly installed on the right side of the first support frame 11, and the fixed rotating roller 42 is rotatably installed in the middle of the rotating shaft 41;

[0040] The moving assembly includes a first cylinder 43, a moving frame 44, a limiting rod 45, a moving rotating roller 46 and a through hole 47. The first cylinder 43 is fixedly installed on the left side of the first support frame 11. The moving frame 44 is fixedly installed on the output end of the first cylinder 43. The limiting rod 45 is symmetrically fixedly installed on the left side of the moving frame 44, and the limiting rod 45 is connected to the first support frame 11 in a limited sliding manner; the moving rotating roller 46 is symmetrically rotatably installed on the inner side of the moving frame 44, and a through hole 47 is opened in the middle of the moving rotating roller 46; both ends of the rotating shaft 41 pass through the through hole 47; the size of the through hole 47 is larger than the rotating shaft 41.

[0041] The second ejection assembly 61 has the same structure as the first ejection assembly 4 but is located in a different position;

[0042] The slitting assembly 62 includes a support frame 621, a guide rod 622, a movable plate 623, a slitting knife 624 and a connecting assembly. The support frame 621 is fixedly mounted on the upper side of the second support frame 12, and a plurality of guide rods 622 are limitedly slidably connected to the support frame 621; the bottom ends of the guide rods 622 are symmetrically fixedly mounted on the upper side of the movable plate 623, and a slitting knife 624 is fixedly mounted on the bottom of the movable plate 623; the connecting assembly is mounted on the second ejection assembly 61, the second support frame 12 and the movable plate 623;

[0043] The connecting assembly includes a connecting rod 625 and a rotating rod 626. The middle part of the connecting rod 625 is rotatably mounted on the upper side of the second support frame 12. The two ends of the connecting rod 625 are respectively rotatably connected to one end of a rotating rod 626. The other end of the upper rotating rod 626 is rotatably mounted on the side of the movable plate 623. The other end of the lower rotating rod 626 is rotatably mounted on the movable frame 44 of the second ejection assembly 61.

[0044] In this embodiment, when the trimming assembly 2, the first ejection assembly 4 and the slitting mechanism 6 work normally, the push rod 21 drives the trimming knife 22 to move forward, and the edge of the film 7 is cut by the trimming knife 22, and the film 7 is transported downward, and the middle part of the film 7 is guided by the rotating shaft 41 and the fixed rotating roller 42, and the first cylinder 43 drives the moving frame 44 to move, and the moving frame 44 moves horizontally under the limiting action of the limiting rod 45, thereby driving the moving rotating roller 46 to move horizontally, and the trimmed edge of the film 7 is ejected by the moving rotating roller 46, so that the trimmed edge of the film 7 is separated from the film 7; the film 7 is transported to the right, and the trimmed edge of the film 7 is transported to the second ejection assembly 6 1, the cut edge of the film 7 is ejected upward by the second ejection assembly 61, the second ejection assembly 61 moves upward and drives the movable plate 623 to move synchronously toward each other through the connecting rod 625 and the rotating rod 626, the movable plate 623 moves vertically downward by the limiting effect of the support frame 621 and the guide rod 622, the movable plate 623 moves downward and drives the slitting knife 624 to move downward, so that the cut edge end of the film 7 is cut off by the slitting knife 624 and the second ejection assembly 61, so that the end of the film 7 is cut more thoroughly, avoiding the incomplete cutting from pulling the middle part of the film 7, and preventing the slitting knife 624 from contacting the middle part of the film 7 and damaging the film 7.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A plastic film trimming and recycling device, comprising a machine (1), characterized in that: A first support frame (11), a mounting frame (14), a second support frame (12) and a third support frame (13) are fixedly mounted on the upper side of the machine platform (1) in sequence from left to right, and the mounting frame (14) is located on the lower side of the first support frame (11); The first support frame (11) is provided with a guide roller (3), a trimming assembly (2), a first ejection assembly (4) and two positioning rollers (5) in sequence from top to bottom; the second support frame (12) is provided with a slitting mechanism (6); the third support frame (13) is provided with a guide roller (3); the mounting frame (14) is provided with a material receiving hopper (8); a negative pressure pipe (9) is fixedly provided on the lower side of the material receiving hopper (8); and the material receiving hopper (8) is connected to the negative pressure pipeline through the negative pressure pipe (9); The slitting mechanism (6) comprises a second ejection assembly (61) and a slitting assembly (62), wherein the second ejection assembly (61) is mounted on the lower side of the second support frame (12), and the slitting assembly (62) is mounted on the upper side of the second support frame (12).

2. The plastic film trimming and recycling device according to claim 1, characterized in that: The trimming assembly (2) comprises a push rod (21) and a trimming knife (22); the push rod (21) is fixedly mounted on the upper side of the first support frame (11); and the trimming knife (22) is fixedly mounted on the output end of the push rod (21).

3. The plastic film trimming and recycling device according to claim 2, characterized in that: The first ejection assembly (4) comprises a guide assembly and a moving assembly, wherein the guide assembly is mounted on the right side of the first support frame (11) and the moving assembly is mounted on the left side of the first support frame (11).

4. The plastic film trimming and recycling device according to claim 3, characterized in that: The guide assembly comprises a rotating shaft (41) and a fixed rotating roller (42); the rotating shaft (41) is fixedly mounted on the right side of the first support frame (11); and the fixed rotating roller (42) is rotatably mounted in the middle of the rotating shaft (41).

5. The plastic film trimming and recycling device according to claim 4, characterized in that: The moving assembly comprises a first cylinder (43), a moving frame (44), a limiting rod (45), a moving rotating roller (46) and a through hole (47); the first cylinder (43) is fixedly mounted on the left side of the first support frame (11); the moving frame (44) is fixedly mounted on the output end of the first cylinder (43); the limiting rod (45) is symmetrically fixedly mounted on the left side of the moving frame (44); the limiting rod (45) is slidably connected to the first support frame (11); a moving rotating roller (46) is symmetrically rotated mounted on the inner side of the moving frame (44); a through hole (47) is provided in the middle of the moving rotating roller (46); both ends of the rotating shaft (41) pass through the through hole (47); the through hole (47) is larger than the rotating shaft (41).

6. The plastic film trimming and recycling device according to claim 5, characterized in that: The second ejection assembly (61) has the same structure as the first ejection assembly (4).

7. The plastic film trimming and recycling device according to claim 6, characterized in that: The slitting assembly (62) comprises a support frame (621), a guide rod (622), a movable plate (623), a slitting knife (624) and a connecting assembly. The support frame (621) is fixedly mounted on the upper side of the second support frame (12), and a plurality of guide rods (622) are limitedly slidably connected to the support frame (621); the bottom ends of the guide rods (622) are symmetrically fixedly mounted on the upper side of the movable plate (623), and the slitting knife (624) is fixedly mounted on the bottom of the movable plate (623); and the connecting assembly is mounted on the second ejection assembly (61), the second support frame (12) and the movable plate (623).

8. The plastic film trimming and recycling device according to claim 7, characterized in that: The connecting assembly comprises a connecting rod (625) and a rotating rod (626); the middle portion of the connecting rod (625) is rotatably mounted on the upper side of the second support frame (12); the two ends of the connecting rod (625) are respectively rotatably connected to one end of a rotating rod (626); the other end of the upper rotating rod (626) is rotatably mounted on the side of the movable plate (623); and the other end of the lower rotating rod (626) is rotatably mounted on the movable frame (44) of the second ejection assembly (61).

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